Toshiba e-Studio 2040c, e-Studio 2540c, e-Studio 3040c, e-Studio 3540c, e-Studio 4540c Imaging Manual

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File No. SME11002600 R110621J9200-TTEC Ver00_2011-08

Trademarks

x Fiery is a registered trademark of Electronics for Imaging, Inc. in the U.S. Patent and Trademark Office and/or

certain other foreign jurisdictions.

x Company names and product names in this manual are the trademarks or registered trademarks of their

respective companies.

Under the copyright laws, this manual cannot be reproduced in any form without prior written permission of TOSHIBA TEC CORPORATION.

Revision Record

File No. SME11002600

Date Rev.No Item Descriptions Remarks

Purpose of the Imaging Manual

The Imaging Manual is intended for customers using the Toshiba e-STUDIO2040C/2540C/3040C/3540C/4540C with a variety of specific needs and inquiries for high image quality, such as:

x How to obtain a clearer copy image x How to maintain the current image quality x How to make the text look sharper on the copy

The Toshiba MFPs are factory-configured to provide image quality settings that satisfy the majority o f customers. However, these settings may not be necessarily optimal for the specific needs of all customers. Proper image quality adjustments can satisfy such needs. Most of the adjustments described in this manual must be performed by a service technician, but a few of them can also be performed by the customer.

It is strongly recommended that this manual be fully utilized by not only the service technician, but also the sales representative, who also has opportunities of obtaining customer feedback on the image quality. This manual helps the sales representative to study and comprehend what kind of customer requirements for image quality can be satisfied, to make proposals to customers to improve image quality, and to communicate the customers’ specific requirements with ease to the service technician. In addition, this manual is expected to facilitate the marketing of Toshiba MFPs to prospective customers that have a specific demand for image quality and the expansion of sales.

The adjustments described in this manual are all based on the requests of actual customers. Meeting their specific wishes will only add to their satisfaction.

Please remember to read "Precautions after the completion of the adjustment," to which you must pay close attention, after finishing the adjustment.

Precautions in Servicing

• For adjustments to be performed by the service technician, the precautions given in the Service Manual must be stringently followed. The adjustments must be performed by a qualified service technician who has completed the service training course.

• The default listed mentioned in this manual may be different from the actual ones, due to the timing of shipping (firmware version). But note that the recommended values and acceptable value range stated in this manual remain the same.

Purpose of the Imaging Manual

Icons

The following icons used in this manual denote the following:

: • Copy ——— An adjustment having an effect on copying in the Black mode (excluding

the Image smoothing mode)

• Printer ——– An adjustment having an effect on Black and White mode printing

* The adjustment will be effective, if "Black and White" is selected from

among the "Color" options on the Windows printer driver or if "Mono" is selected from among the "Color Type" options on the Macintosh print dialog.

• Scan ——— An adjustment having an effect on scanning in the Black mode

: • Copy ——–– An adjustment having an effect on copying in the Image smoothing mode

in the Black mode

• Scan ——— An adjustment having an effect on scanning in the Gray scale mode

: • Copy ——— An adjustment having an effect on copying in the Full color mode

• Printer ——– An adjustment having an effect on full-color printing

* The adjustment will be effective, if "Auto" or "Color" is selected from

among the "Color" options on the Windows printer driver or if "Auto" or "Color" is selected from among the "Color Type" options on the Macintosh print dialog.

• Scan ——— An adjustment having an effect on scanning in the Full color mode

: • Copy ——— An adjustment having an effect on copying in the Auto color mode

• Scan ——— An adjustment having an effect on scanning in the Auto color mode

: An adjustment having an effect on printing with the Windows PCL6 emulation printer

driver

: An adjustment having an effect on printing with the Windows PS3 emulation printer

driver

: An adjustment having an effect on printing with the Windows PSX emulation printer

driver

: An adjustment having effect on printing with the Macintosh printer driver

: An adjustment having an effect on an image stored in the e-Filing box by the scanning

functions (including Scan to Box, Scan to File and Scan to E-mail)

: An adjustment having an effect on an image stored in the e-Filing box by the copying

functions (Copy to Box)

: An adjustment having an effect on an image stored in the e-Filing box by the printing

functions (Print to Box)

: An adjustment having an effect on an image stored in the e-Filing box by the Fax and

Internet Fax functions (including Received Fax to Box and Received Internet Fax to Box)

PCL6

PS3

Scan to Box

Copy to Box

Print to Box

Fax to Box

Mac

XPS

Table of Contents

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.1 To Obtain a Darker Image ............................................................................1-1

1.2 To Adjust the Density of an Entire Copy.......................................................1-5

1.2.1 To Adjust the Density on a Solid Colored Image............................................1-5

1.2.2 To Adjust the Density on a Photo or Gradational Image ................................1-8

1.3 To Achieve the Image Quality Most Suitable for the Paper Used (To

eliminate blur and graininess from an image) ....................................1-11

1.4

To Minimize Variations in the Image Quality under the Operating Conditions

(To

optimally program image quality control) ...........................................1-16

1.5 To Correct Out-of-Registration Colors ........................................................1-23

1.6 To customize the image density..................................................................1-27

2. Copier-specific Adjustments

2.1 To Copy Text Clearly (To eliminate faint, smudged or blurred text)..............2-1

2.1.1 To Adjust the Copy Image Quality in the Black Mode ....................................2-2

2.1.2 To Adjust the Copy Image Quality in the Full Color Mode..............................2-5

2.1.3 To Adjust the Copy Image Quality in the Auto Color Mode............................2-7

2.2 To Closely Match the Color Balance of the Original .....................................2-9

2.3 To Improve the Reproducibility of Gray.......................................................2-13

2.4 To Copy in Vivid Colors ..............................................................................2-15

2.5 To Make the Pale Area of the Original Look Darker and Sharper (To improve the

highlight reproducibility) .....................................................................2-19

2.6 To Eliminate the Background Color ............................................................2-23

2.6.1 To Adjust the Copy Image Quality in the Black Mode ..................................2-24

2.6.2 To Adjust the Copy Image Quality in the Full Color Mode............................2-26

2.7 To Avoid Copying the Image Seen through the Back of a Page Printed on

Thin Paper .........................................................................................2-30

2.7.1 To Adjust the Copy Image Quality in the Black Mode ..................................2-31

2.7.2 To Adjust the Copy Image Quality in the Full Color Mode............................2-34

2.8 To Eliminate Moiré......................................................................................2-36

2.9 To Copy Sharply (To enhance sharpness) .................................................2-40

2.10 To Make Photo Edges Look Softer.............................................................2-43

2.11 To Make Solid Filled Bold Text (Logo) Highly Colored................................2-48

2.11.1 To Adjust the Copy Image Quality of a Black Logo ..................................2-49

2.11.2 To Adjust the Copy Image Quality of a Colored Logo...............................2-51

2.12 To Sharply Contrast the Hues of Highlighters on the Copy.........................2-53

2.13 To Obtain a Good Color Balance on Thick Paper.......................................2-56

2.14 To Obtain Smooth Gray-Scale Photo Images.............................................2-60

2.15 To Change the Threshold in Auto Color Mode

(To change the threshold between the

Full Color mode and the Black mode to meet the user’s needs)

...............................2-61

Table of Contents

2.16 To Adjust the Twin-Color Copy Image Quality............................................2-64

2.16.1 To Adjust the Tint of Colors other than Black ...........................................2-65

2.16.2 To Adjust the Reproducibility of Black in the Red and Black Mode..........2-66

2.16.3 To Adjust the Boundary between Black and Colors other than Black.......2-67

2.16.4 To Adjust the Tint of Specified Colors for Twin-Color or Single-Color

Copying...............................................................................................2-68

2.17 To Adjust the Image Quality Scanned from the RADF................................2-70

2.18 To Program Frequently Used Copy Settings

(To Use Custom Mode)......................................................................2-73

2.18.1 To Adjust Custom Mode Settings in Black Mode......................................2-73

2.18.2 To Adjust Custom Mode Settings in Full Color Mode...............................2-78

2.19 To Copy While Erasing Shadow Outside of Image.....................................2-82

2.20 To Avoid Copying Blank Page of Original Scanned with RADF..................2-83

2.21 To Obtain Image in Even Density Level......................................................2-85

3. Printer-specific Adjustments

3.1 To Maintain a Steady Color Balance.............................................................3-1

3.2 To Maintain a Steady Color Balance on Thick Paper or Special Paper..............3-3

3.3 To Obtain the Desired Color Balance ...........................................................3-5

3.4 To Closely Match the Color Balance on the Monitor...................................3-13

3.5 To Maintain a Uniform Gray Hue (To maintain Consistency in Gray among

Text, Photos and Graphics)...............................................................3-16

3.6 To Use Only the Black Toner to Reproduce Gray Areas (To use only the black toner to reproduce black-and-white photos or gradational

images)..............................................................................................3-19

3.7 To Easily Adjust the Overall Brightness......................................................3-23

3.8 To Adjust the Overall Saturation.................................................................3-26

3.9 To Easily Adjust the Overall Contrast .........................................................3-30

3.10 To Obtain a Sharper Print Image................................................................3-33

3.11 To Obtain a Softer Image............................................................................3-36

3.12 To Make Low-resolution Data Look Finer

(To soften an image)

.....................3-39

3.13 To Eliminate Smudges from Highly Colored Text and Lines (To prevent toner scattering around text and lines where a large amount of toner is

used)..................................................................................................3-42

3.14 To Clearly Print Light-Colored Thin Lines or Text.......................................3-46

3.14.1 To Adjust the Print Image Quality in the Color Mode ................................3-47

3.14.2 To Adjust the Print Image Quality in the Black and White Mode ..............3-55

3.15 To Make the Light-Colored Area Darker on the Printout.............................3-59

3.16 To Clearly Print Thin Lines/Double Lines....................................................3-65

3.17 To Decrease the Image Density and Save Toner (To Print in the Toner

Save Mode) ....................................................................................... 3-68

iii

Table of Contents

3.18 To Adjust the Image Density in the Toner Save Mode................................3-71

3.19 To Print Illegible Gray or Colored Text in Black..........................................3-74

3.20 To Ignore Blank Pages for Printing.............................................................3-76

3.21 To Sharply Print Black Text ........................................................................3-79

3.22 To Prevent Dark Toner from Coming Off....................................................3-89

3.23

To Register the Image Quality Adjusted Corresponding to a Preference

(To use the

Custom Color Settings)......................................................................3-91

3.24 To Print a Full-Color Original in Two Colors................................................3-94

3.24.1 To Adjust Colors.......................................................................................3-95

3.24.2 To Adjust the Sharpness ........................................................................3-100

3.24.3 To Print a Full-Color Original in Two Colors ...........................................3-102

3.25 To Use ICC Profile....................................................................................3-103

3.25.1 To Create ICC Profiles for Printing on the Paper to be Used .................3-104

3.25.2 To Print Precise Colors Using Existing RGB Source ICC Profiles..........3-108

3.25.3 To Perform Simulated Printing with CMYK Inks

of Each Ink Manufacturer..................................................................3-112

3.25.4

To Convert Colors with Specified Source ICC Profiles (Not Using Embedded ICC

Profiles)

..............................................................................................3-116

3.25.5 To Perform Further Adjustment After Using ICC Profiles .......................3-121

3.26 To Switch Overprint (Overlaid) Images.....................................................3-124

4. e-Filing-specific Adjustments

4.1 To Clearly Store a B/W Image in the Auto Color Mode.................................4-1

4.2 To Store an Original while Reducing the File Size........................................4-3

4.3 To Store a Color Photo Image, while Minimizing Moiré ................................4-5

4.4 To Match the Color Balance on the Original (To adjust the color balance in

Print to Box).........................................................................................4-8

4.5 To Scan and Print, while Minimizing Moiré.................................................4-10

4.6 To Finely Print the Image Stored in the e-Filing box (To print images stored

through Copy to Box or Print to Box) .................................................4-12

4.7 To Store an Image Suitable for Displaying on the Monitor

or Image Editing.................................................................................4-14

4.8 To Finely Print Color Images Scanned and Stored (To print images stored

through Scan to Box).........................................................................4-16

4.9 Appendix....................................................................................................4-18

5. Scanning-specific Adjustments

5.1 To Clearly Scan Text (To reduce noise around text) ....................................5-1

5.2 To Scan an Original, while Eliminating the Background Color (To eliminate the

background density).............................................................................5-3

Table of Contents

5.3 To Clearly Scan and Print an Original in Black and White (To improve

gradation and reduce graininess).........................................................5-5

5.4 To Scan the Original, while Reducing the File Size ......................................5-6

5.4.1 To Reduce the File Size by Changing the Options when Scanning the

Original..................................................................................................5-7

5.4.2 To Reduce the File Size in Slim PDF ...........................................................5-10

5.5 To Sharply Scan the Original (To increase the sharpness intensity) ..........5-12

5.6 To Scan an Original, while Enhancing Black ..............................................5-14

5.7 To Scan an Original with the Desired Gradation.........................................5-16

5.8

To Register the Original Mode Optimal for a Particular Type of Original

(To have

"Custom" selected) ............................................................................5-18

6. Printer-specific Adjustments (GA-1211)

6.1 To Maintain a Steady Color Balance (Calibration)........................................6-1

6.1.1 To Check Calibration History..........................................................................6-2

6.1.2 Types of Calibration and Their Order .............................................................6-4

6.1.3 To Calibrate for Thick 2/3/4 (Default Output Profiles and Calibration Sets) ...6-8

6.1.4 Confirmation of Calibration Result................................................................6-13

6.1.5 To Calibrate Measurement Page (Target) in Both Directions.......................6-19

6.2

To Use Different Profile for Each Media When Media Types are Mixed

.................6-22

6.3 To Print in Desired Color Balance (How to Use Color Editor).....................6-25

6.4 To Print with Profile Attached to Image.......................................................6-30

6.4 To Print with Profile Attached to Image.......................................................6-31

6.5 To Adjust Tone of Gray or Black Area ........................................................6-33

6.5.1 To Print Gray Areas Only with K Toner ........................................................6-34

6.5.2 To Adjust Tone of Black Areas on Text or Line Arts .....................................6-36

6.6 To Make Low-Resolution Images Look Smoother ......................................6-38

6.7 To Suppress Moiré or Jagginess on Photographs......................................6-40

6.8 To Adjust Sharpness...................................................................................6-42

6.8.1 To Adjust Sharpness Level of Image............................................................6-43

6.8.2 To Change Default Setting of Sharpness Level............................................6-44

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1. General Adjustments – Copying, Printing and e-Filing

1.1 To Obtain a Darker Image

Before the adjustment After the adjustment

The output image looks light and blurred. The output image looks darker and sharper.

 Explanation

When an original containing photo images or gradational images is printed, the output image sometimes looks light and blurred. Perform image quality control or automatic calibration, and adjust the transfer roller bias output, in order to obtain a darker and sharper image.

 Procedures

* Perform the adjustment in accordance with the procedures below. * Only the service technician must use procedures (1), (3) and (4). * Both the service technician and the user can use procedure (2).

(1) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be forcibly performed to correct variations in density.

After exercising image quality control, use the next procedure.

(2) Perform automatic calibration to correct variations in image density.

* "ADMIN" is selected from among the "CALIBRATION DISPLAY LEVEL" options by default. In other

words, an administrator is authorized to operate automatic calibration. But "USER" can also be selected to allow the user to operate it. Refer to the MFP Management Guide for further information regarding how to select the "CALIBRATION DISPLAY LEVEL" option.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

To adjust the copy image quality

Use steps (a) through (i) to perform automatic calibration.

(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu. (b) Press the [ADMIN] tab. (c) Enter the 6 to 10 digit administrator password. Press the [ENTER] button. (d) Press the [GENERAL] button. (e) Press the [CALIBRATION] button. (f) Press the [COPY] button. (g) Press the [CALIBRATION] button to print out the test chart. (h) Place the printed test chart on the original glass. (i) Press the [START] button to perform calibration. When the calibration comes to an end, the message

"Scanning and calibrating" will disappear.

* As a result of the abov e steps, th e copy image quality will be corrected in the Full Color mode and

Black and White mode simultaneously.

* To correct variations in image density by performing automatic calibration for each paper type, refer

to “(1) Perform automatic calibration for each paper type to correct variations in image density” in “2.13 To Obtain a Good Color Balance on Thick Paper”.

To adjust the print image quality

Use steps (a) through (j) to perform automatic calibration.

(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu. (b) Press the [ADMIN] tab. (c) Enter the 6 to 10 digit administrator password. Press the [ENTER] button. (d) Press the [GENERAL] button. (e) Press the [CALIBRATION] button. (f) Press the [PRINT] button. (g) Press the [CALIBRATION] button to print out the test chart. (h) Place the printed test chart on the original glass. (i) Press the [START] button to perform calibration. When the calibration comes to an end, the message

"Scanning and calibrating" will disappear.

(j) The message "Is a result made to reflect?" will appear. Press the [YES] button.

* To correct variations in image density by performing automatic calibration for each paper type, refer

to “3.2 To Maintain a Steady Color Balance on Thick Paper or Special Paper”.

After performing automatic calibration, print and check the image quality. If further image quality adjustments are still necessary, use the next procedure.

1 - 3

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(3) Enter adjustment mode [05]. Change the values for codes [2934 to 2937] to adjust the transfer (2nd

transfer) roller bias output.

(Adjust the offset voltage of transfer roller bias so as to increase the density of the image.)

• The code to use varies according to the paper type. Adjust the value for [05] code corresponding to the paper type for which you would like to improve the image quality. Set the value within a range of "2" to "8" to obtain the highest density of the image.

Paper type [05] code Subcode

Recommended

value

Acceptable

value range

Default

Plain paper 0

Thick 1 1 Thick 2 2 Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Front

Thick 4

05-2934

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1 Thick 2 2 Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Full color

Back

Thick 4

05-2935

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1 Thick 2 2 Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Front

Thick 4

05-2936

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1 Thick 2 2 Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Black

Back

Thick 4

05-2937

2 to 8 0 to 10 5

* "Front" refers to the printed side in the simplex mode or the side that is delivered facing downwards in the duplex

mode.

"Back" refers to the printed side that is delivered facing upwards in the duplex mode.

1 - 4

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

* The table below shows you the acceptable paper weight for the paper type.

Paper type Acceptable paper weight

Plain paper 64 to 105 g/m² 16 to 20 lb. Bond

Thick 1 106 to 163 g/m² Max. 60 lb. Cover Thick 2 164 to 209 g/m² Max. 110 lb. Index Thick 3 210 to 256 g/m² Max. 140 lb. Index Thick 4 257 to 280 g/m² Max. 150 lb. Index

• After adjusting the transfer roller bias output, perform automatic calibration in the same manner as in procedure (2).

<Hint> The transfer voltage increases as the set value is increased. It is usually recommended that the

set value be increased, when you print on thick paper or paper with asperities on its surface. On the other hand, the set value should be decreased, when you print on thin paper.

After adjusting the density, print and check the image quality. If further image quality adjustments are still necessary, use the next procedure.

(4) Check the life of the consumables (particularly the drum, developer material and fuser unit) and replace

them, if necessary.

• When replacing any consumable, use steps (a) to (c).

(a) Enter the PM support mode. Reset the counter corresponding to the replaced consumable to "0." * For further information regarding the PM support mode, refer to the Service Manual. (b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be performed and the image quality control value will be initialized. (c) Perform automatic calibration in the same manner as in procedure (2).

* After replacing any consumable, remember to reset the counter corresponding to it to "0." Otherwise, it

may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

* While replacing any consumable, also check the slit glass in the laser optical unit, and thoroughly clean it,

if it is soiled.

 Precautions after the completion of the adjustment

Nothing in particular.

 Remarks

• Enter the value mentioned in the procedures or one within the recom mended value range for the adjustment. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

• If printing on another type of paper causes a pro ble m with the image quality after the adjustment, return the set values (for codes 05-2934 to 2937) to the default (set value: 5) and then perform the adjustment again.

• When replacing any consumable, refer to the relevant information in the Service Manual and Service Handbook.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.2 To Adjust the Density of an Entire Copy

 Explanation

The density on a solid colored image and a photo or gradational image (halftones) can be adjusted as desired by the user.

 Procedures

* The use procedure varies, depending on whether you are going to adjust the density on a solid colored image or

a photo or gradational image. Refer to "To Adjust the Density on a Solid Colored Image" in order to adjust the density on a solid colored image. Refer or "To Adjust the Density on a Photo or Gradational Image" in order to adjust the density on a gradational image (halftones).

1.2.1 To Adjust the Density on a Solid Colored Image

If the density is decreased If the density is increased

The solid colored area becomes lighter. The solid colored area becomes darker.

 Explanation

A particular color can be intensely darker or lighter, depending on the type of paper or original used. Adjust the developer bias output, in order to adjust the amount of toner on the solid colored area and obtain the image quality the user desires.

 Procedures

* The service technician must perform the adjustment in accordance with the procedures below.

1 - 6

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(1) Enter setting mode [08]. Change the value to adjust the density of a solid area during the copying/printing

operation.

• Use steps (a) to (c) to perform the adjustment. (a) Enter setting mode [08]. Change the values for codes [2513 to 2514] to adjust the developer bias

output value. The necessary correction amount varies according to the installation environment or usage of consumables such as the developer material and drum. In this adjustmen t, the correction amount is varied only by specified values. Use 05-2662 for the density adjustment of sol i d areas.

• Decreasing the value will make the solid colored area become lighter (decrease the amount of toner on the solid colored area). On the other hand, increasing the value will make the solid colored area become darker (increase the amount of toner on the area).

* The value to use varies according to the paper type and color to adjust. Check the code to use in

accordance with the following "Code" list, and refer to the "Value" list to select a proper value.

Code

Paper type Color to adjust [08] code Subcode

Y (yellow) 0 M (magenta) 1 C (cyan) 2

Plain paper

K (black)

08-2513

Y (yellow) 0 M (magenta) 1 C (cyan) 2

Full color

Thick

K (black)

08-2514

Value

Correction value for developer bias

output

Density of the solid colored

area

0 Value automatically set −100 Light 1 Value automatically set −80

↑

2 Value automatically set −60

↑

3 Value automatically set −40

↑

4 Value automatically set −20

↑

5 Value automatically set

↑ 6 Value automatically set +20 Default 7 Value automatically set +40

↓ 8 Value automatically set +60

↓ 9 Value automatically set +80

↓

10 Value automatically set +100 Dark

<Hint> Adjust th e values for the following codes, in order to adjust colors with RGB.

Adjustment of R (Red): Adjust Y (Yellow) and M (Magenta). Adjustment of G (Green): Adjust Y (Yellow) and C (Cyan). Adjustment of B (Blue): Adjust M (Magenta) and C (Cyan).

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be forcibly performed and the image density will be corrected.

<Note> The above corrections will be effective immediately after the values for codes [08-2513

to 2514] are changed. After changing the values for codes [08-2513 to 2514], remember to perform image quality control for code 05-2742.

Repeatedly use steps (a) to (c) as necessary, to select a proper value.

If further image quality adjustments are still necessary, use the next procedure.

(2) Check the life of the consumables (particularly the drum, developer material and transfer belt unit) and

replace them, if necessary.

• When replacing any consumable, use steps (a) to (b). (a) Enter the PM support mode. Reset the counter corresponding to the replaced consumable to "0."

* For further information regarding the PM support mode, refer to the Service Manual.

(b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be performed and the image quality control value will be initialized.

* After replacing any consumable, remember to reset the counter corresponding to it to "0." Otherwise, it

may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

* While replacing any consumable, also check the slit glass in the laser optical unit, and thoroughly clean it,

if it is soiled.

 Precautions after the completion of the adjustment

• The adjustment may possibly cause an increase in the amount of toner consumed, scattering of the toner, diminished photo images or gradations (less accurate reproducibility of halftones), extremely dark images (decreased resolving power), extremely light images (faint thin lines), and shorten the life of the consumables. Therefore, carefully perform the adjustment, while checking the copy or print image.

• No effect of the adjustment may appear, depending on the operating environment of the MFP. Therefore, carefully perform the adjustment, while checking the copy or print image.

 Remarks

• The effect of the adjustment may vary, depending on the usage pattern of the consumables, such as the developer material and drum, and the operating environment of the MFP.

• When replacing any consumable, refer to the relevant information in the Service Manual and Service Handbook.

1 - 8

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.2.2 To Adjust the Density on a Photo or Gradational Image

If the density is decreased If the density is increased

An original containing halftones, such as a photo image becomes lighter.

An original containing halftones, such as a

photo image becomes darker.

 Explanation

A particular color can be intensely darker or lighter, depending on the type of paper or original used. Adjust the intensity of the laser, in order to adjust the density on the photo or gradational image (halftones) and obtain th e image quality the user desires.

 Procedures

* The service technician must perform the adjustment in accordance with the procedures below.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(1) Enter setting mode [08]. Change the value to adjust the image density of halftones during the

copying/printing operation.

• Use steps (a) to (c) to perform the adjustment. (a) Enter setting mode [08]. Change the values for codes [2525 to 2526] to correct the intensity of the

laser.

• Decreasing the value will make a photo or gradational image become lighter, easily blurring the image, but it will increase the gradation. On the other hand, increasing the value will make the photo or gradational image become darker and clearer, but it will decrease the gradation.

* The value to use varies according to the paper type and color to adjust. Check the code to use in

accordance with the following "Code" list, and refer to the "Value" list to select a proper value.

Code

Paper type Color to adjust [08] code Paper type

Y (yellow) 0 M (magenta) 1 C (cyan) 2

Plain paper

K (black)

08-2525

3 Y (yellow) 0 M (magenta) 1 C (cyan) 2

Full color

Thick

K (black)

08-2526

Value

Value Correction value for intensity of the laser

Density on the photo/gradational image

0 Value automatically set −100 Light (gradation: more) 1 Value automatically set −80

↑

2 Value automatically set −60

↑

3 Value automatically set −40

↑

4 Value automatically set −20

↑ 5 Value automatically set Default 6 Value automatically set +20

↓ 7 Value automatically set +40

↓ 8 Value automatically set +60

↓ 9 Value automatically set +80

↓

10 Value automatically set +100 Dark (gradation: less)

<Hint> Adjust th e values for the following codes, in order to adjust colors with RGB.

Adjustment of R (Red): Adjust Y (Yellow) and M (Magenta). Adjustment of G (Green): Adjust Y (Yellow) and C (Cyan). Adjustment of B (Blue): Adjust M (Magenta) and C (Cyan).

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be forcibly performed and the image density will be corrected.

<Note> The above corrections will be effective immediately after the values for codes [08-2525

to 2526] are changed. After changing the values for codes [08-2525 to 2526], remember to perform image quality control for code 05-2742.

Repeatedly use steps (a) to (c) as necessary to select a proper value.

If further image quality adjustments are still necessary, use the next procedure.

(2) Check the life of the consumables (particularly the drum, developer material and transfer belt unit) and

replace them, if necessary.

• When replacing any consumable, use steps (a) to (b). (a) Enter the PM support mode. Reset the counter corresponding to the replaced consumable to "0."

* For further information regarding the PM support mode, refer to the Service Manual.

(b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be performed and the image quality control value will be initialized.

* After replacing any consumable, remember to reset the counter corresponding to it to "0." Otherwise, it

may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

* While replacing any consumable, also check the slit glass in the laser optical unit, and thoroughly clean it,

if it is soiled.

 Precautions after the completion of the adjustment

• The adjustment may possibly provide extremely dark images (decreased resolving power, inadequate reproducibility of gradations), and extremely light images (blurred images, faint thin lines). Therefore, carefully perform the adjustment, while checking the copy or print image.

• No effect of the adjustment may appear, depending on the operating environment of the MFP. Therefore, carefully perform the adjustment, while checking the copy or print image.

 Remarks

• The effect of the adjustment may vary, depending on the usage pattern of the consumables, such as the developer material and drum, and the operating environment of the MFP.

• When replacing any consumable, refer to the relevant information in the Service Manual.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.3 To Achieve the Image Quality Most Suitable for the Paper Used

(To eliminate blur and graininess from an image)

Before the adjustment After the adjustment

The image looks grained, depending on the type of paper.

A clear image quality, most suitable for a type

of paper used, is obtained.

 Explanation

The image sometimes looks slightly blurred or grained on the copy or printout, depending on the type of paper used. Adjust the transfer roller bias output and the fuser temperature, in order to achieve the image quality most suitable for the paper used.

 Procedures

* All the steps in the adjustment must be performed by the service technician. The procedure to be followed

differs depending on the purpose as follows:

• To adjust halftone image: Go to step (1)

• To adjust images on the high-density area (only when recycled paper is used): Go to step

(1) Enter adjustment mode [05]. Change the values for codes [2934 to 3937] to adjust the transfer (2nd

transfer) roller bias output.

(Adjust the offset voltage of transfer roller bias so as to optimize the halftones.)

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

Paper type [05] code Subcode

Recommended

value

Acceptable

value range

Default

Plain paper 0

Thick 1 1 Thick 2 2 Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Front

Thick 4

05-2934

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1 Thick 2 2

Thick 3 3 Special 1 5 Special 2 6

Recycled paper

Full color

Back

Thick 4

05-2935

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1

Thick 2 2

Thick 3 3

OHP 4 Special 1 5 Special 2 6

Recycled paper

Front

Thick 4

05-2936

2 to 8 0 to 10 5

Plain paper 0

Thick 1 1 Thick 2 2

Thick 3 3 Special 1 5 Special 2 6

Recycled paper

Black

Back

Thick 4

05-2937

2 to 8 0 to 10 5

* "Front" refers to the printed side in the simplex mode or the side that is delivered facing downwards in the duplex

mode.

"Back" refers to the printed side that is delivered facing upwards in the duplex mode.

* The table below shows you the acceptable paper weight for the paper type.

Paper type Acceptable paper weight

Plain paper 64 to 105 g/m² 16 to 20 lb. Bond

Thick 1 106 to 163 g/m² Max. 60 lb. Cover Thick 2 164 to 209 g/m² Max. 110 lb. Index Thick 3 210 to 256 g/m² Max. 140 lb. Index Thick 4 257 to 280 g/m² Max. 150 lb. Index

• After adjusting the transfer roller bias output, perform automatic calibration. * For further information regarding the procedures, refer to procedure (2) in 1.1 To Obtain a Darker Image.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

<Hint> The transfer voltage increases as the set value is increased. It is usually desirable th at the set

value be decreased to obtain a clearly highlighted area.

After performing the adjustment, print and check the image quality. If further image quality adjustment is necessary, go to step (3).

(2) If the image on the high-density area looks grained on plain paper other than the TOSHIBA-recommended

one is used, select “recycled paper” as a paper type. * To select the paper type, refer to the Operator’s Manual for Copying Guide.

• If fine adjustment of image quality in the recycled paper mode is required in accordance with the paper type, follow the steps from (a) to (b) below.

(a) Enter the adjustment mode [05]. Change the value of the codes [2934] to [2937] to adjust (2nd)

transfer bias output. (In this step the transfer roller bias offset voltage is adjusted to print the highdensity area or the halftone area of the image most clearly.)

Paper type [05] code

Subco

Recom

mended

value

Accepta

ble value

range

Default

Front

Recycled

paper

05-2934 7 2 to 8 0 to 10 5

Full color

Back

Recycled

paper

05-2935 7 2 to 8 0 to 10 5

Front

Recycled

paper

05-2936 7 2 to 8 0 to 10 5

Black

Back

Recycled

paper

05-2937 7 2 to 8 0 to 10 5

* “Front” refers to the printed side in the simplex mode or the side that is delivered facing

downwards in the duplex mode. ”Back” refers to the printed side that is delivered facing upwards in the duplex mode.

• After adjusting the transfer roller bias output, perform automatic calibration. * Refer to step (2) in “1.1 To Obtain a Darker Image”.

<Hint> The larger the setting value is, the more the transfer voltage increases. It is usually

recommended that the set value be increased when you print on thick paper or paper with asperities on its surface. On the other hand, the set value should be decreased when you print on thin paper.

After setting the value, print and check the image quality. If further image quality adjustment is necessary, go to step (b).

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(b) Enter the setting mode [08]. Change the value of the codes [5293] to [5296] to adjust fusing

temperature in the recycled paper mode. (In this step fusing temperature is adjusted to print the high-density area of the image most clearly.)

Adjustment

Paper

type

[08]

code

Subco

Recomm

ended

value

able

value

range

Default

Normal temp /

Black

Normal temp /

Color

3 to 8 0 to 16

• e-STUDIO4540C: 5

• Others: 4

Low temp /

Black

Center

heater

Low temp /

Color

Recycled

paper

08-5293

3 to 8 0 to 16

• e-STUDIO4540C: 7

• Others: 6

Normal temp /

Black

Normal temp /

Color

3 to 8 0 to 16

• e-STUDIO4540C: 5

• Others: 4

Low temp /

Black

Side

heater

Low temp /

Color

Recycled

paper

08-5294

3 to 8 0 to 16

• e-STUDIO4540C: 7

• Others: 6

Normal temp /

Black

Normal temp /

Color

3 to 8 0 to 16 5

Low temp /

Black

Sub

heater

Low temp /

Color

Recycled

paper

08-5295

3 to 8 0 to 16 7

Normal temp /

Black

Normal temp /

Color

2 to 6 0 to 16 4

Low temp /

Black

Pressure

roller

Low temp /

Color

Recycled

paper

08-5296

2 to 6 0 to 16 4

• After adjusting the fusing temperature, perform automatic calibration. * Refer to step (2) in “1.1 To Obtain a Darker Image”.

<Hint> The smaller the setting valu e is, the lower the fusing temperature becomes. It is usually

recommended that the set value be decreased in order to suppress roughness on the high-density area of the image. Adjust the value while checking the image carefully because if the value is too small, insufficient fusing may occur. Since temperatures on the long side of the paper cannot be kept in a proper balance, the same value must be set for the [08] codes [5293] and [5294] unless otherwise required so.

After setting the value, print and check the image quality. If further image quality adjustment is necessary, go to step (3).

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(3) Check the life of the consumables (particularly the drum, developer material and fuser unit) and replace

them, if necessary.

• When replacing any consumable, use steps (a) to (c). (a) Enter the PM support mode. Reset the counter corresponding to the replaced consumable part to "0." * For further information regarding the PM support mode, refer to the Service Manual. (b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be performed and the image quality control value will be initialized. (c) Perform automatic calibration. * For further information regarding the procedures, refer to procedure (2) in 1.1 To Obtain a Darker

Image.

* After replacing any consumable, remember to reset the counter by making it correspond to "0." Otherwise,

it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

* While replacing any consumable, also check the slit glass in the laser optical unit, and thoroughly clean it,

if it is soiled.

 Precautions after the completion of the adjustment

After the fusing temperature was adjusted in step (2) above, printing interruption may occur due to improper fusing temperature. Therefore adjust the value carefully. If you want to change the conditions for printing interruption, change the value of the [08] code [5409] (abnormality process starting temperature setting / recycled paper). For the setting values, refer to the Service Manual.

 Remarks

• Enter the value mentioned in the procedures or one within the recommended value range for the adjustment. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

• The desired image quality may not be obtained, depending on the type of paper used. In this case, use the recommended paper and then print or adjust the image quality.

• If an image problem occurs when you use the other paper type, temporarily set the values of the [08] codes [2934] to [2937] (bias offset) and [5293] to [5296] (fusing temperature during printing) back to the default ones. Then perform the adjustment again.

• When replacing any consumable, refer to the relevant information in the Service Manual.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.4

To Minimize Variations in the Image Quality under the Operating Conditions

(To optimally program image quality control)

Before the adjustment After the adjustment

The image contrast varies, depending on the date and time when copying or printing is performed or the type of job.

The image quality is constantly maintained.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

 Explanation

The image contrast may vary, depending on the date and time when copying or printing is performed or the type of copy/print job. To constantly maintain image quality, shorten the waiting period until image quality control is performed.

 Procedures

* The service technician must perform the adjustment in accordance with the procedures below.

(1) Enter setting mode [08]. Change the value for code [2505], [2507], [2508], [2509], [2677] or [9190] to

specify the best interval during which image quality control should be performed, according to use of the MFP.

The MFP is installed in a place where the temperature and humidity vary widely:

Set "1" (value × 5%R.H.) for code 08-2505 to increase the frequency of image quality control, in response to

a change in humidity.

* Image quality control will be performed, when the relative humidity changes in accordance with the

specified difference from the previous image quality control. If the difference in the relative humidity exceeds the specified value, image quality control is performed first. Then a copy or print job will be performed.

Value for 08-2505 Difference in relative humidity

1 5%R.H. 2 10%R.H. (default)

(b) Set "5" or "3" for code 08-2508 to increase the frequency of image quality control, in response to a

change in humidity.

* Image quality control will be performed, when the drum temperature changes in accordance with the

difference from the previous image quality control. If the difference in the drum temperature exceeds the specified value after a print job is performed, image quality control is performed.

Value for 08-2508 Difference in drum temperature

3 3°C 5 5°C 7 7°C (default)

• After setting the value for code 08-2505, forcibly perform image quality control, as follows: Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

To Have Uniform Variations in the Image Quality after Retu rn from the Auto Power Save Mode:

Change the value of the [08] code [2507] to change the conditions for starting image quality control (shorten

the period of time the MFP is left unused) after the MFP was recovered from the auto power save mode, so that the image quality control will be easily performed.

Value for

08-2507

Period of time the MFP is left unused before starting image quality control

3 minutes or longer (image quality control is performed before the paused job is resumed)

5 minutes or longer (image quality control is performed before the paused job is resumed)

7 minutes or longer (image quality control is performed before the paused job is resumed)

10 minutes or longer (image quality control is performed before the paused job is resumed)

15 minutes or longer (image quality control is performed before the paused job is resumed)

20 minutes or longer (image quality control is performed before the paused job is resumed)

30 minutes or longer (image quality control is performed before the paused job is resumed)

45 minutes or longer (image quality control is performed before the paused job is resumed)

60 minutes or longer (image quality control is performed before the paused job is resumed)

90 minutes or longer (image quality control is performed before the paused job is resumed)

120 minutes or longer (image quality control is performed before the paused job is resumed)

150 minutes or longer (default value - image quality control is performed before the paused job is resumed)

180 minutes or longer (image quality control is performed before the paused job is resumed)

240 minutes or longer (image quality control is performed before the paused job is resumed)

300 minutes or longer (image quality control is performed before the paused job is resumed)

360 minutes or longer (image quality control is performed before the paused job is resumed)

<Note> Do not disable the Auto shut off mode timer setting ("0" is set for 08-9112) while the

Auto power save timer setting is set to invalid ("0" is set for 08-9111). If both settings are set to invalid, this equipment does not enter the energy saving mode so it is always in the ready status. Due to this, image quality control according to the period of time the MFP is left unused is not performed regardless of the setting value of 08-2507.

• After setting the value for code 08-2507, forcibly perform image quality control, as follows: Enter adjustment mode [05], select code [2742], and then press the [START] button.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

A large number of sheets are printed (hundreds of copies or more per day) and the image quality needs to be constantly maintained:

Change the value for code 08-2509 to reduce the accumulated number of printed sheets. It will determine

the interval until the next image quality control is performed.

* After a copy or print job is completed, if the accumulated number of printed sheets exceeds the specified

value, image quality control will be performed.

Value for 08-2509

Accumulated number of print ed sheet s befo re image q uality cont rol is

performed

50 to 999 50 to 999 sheets

1000 1000 sheets (default)

After setting the value for code 08-2509, forcibly perform image quality co ntrol, as follows: Enter adjustment mode [05]. Select code [2742]. Press the [START] button. After performing the adjustment, print and check the image quality.

After performing the adjustment, print and check the image quality. If further image quality adjustments are still necessary, use the next procedure.

The image quality needs to be constantly maintained in continuous printing:

Since image control cannot be performed without a printing interruption, if the number of sheets for 08-

2509 is set to 500 or less, do so also for 08-9199.

Value for 08-2509

Accumulated number of print ed sheet s befo re image q uality cont rol is

performed

50 to 200 50 to 200 sheets

1000 1000 sheets (default)

Value for 08-9199

Accumulated number of print ed sheet s befo re image q uality cont rol is

performed

50 to 499 50 to 499 sheets

500 500 sheets (default)

<Notes>

• To ensure stability, it is recommended to set 1/3 to 1/5 of the number of continuous printing, though the printing performance deteriorates.

• Since the life of consumables such as the cleaning blade is affected, do not set to less than 50 sheets for 082509 and 08-9199.

• The image stability will be improved by changing the setting. However, long-time usage affects the life of consumables. It is recommended to make a minimal change amount or to return to the default value immediately .

• If 08-2367 (ON/OFF setting of drum and belt reverse rotation amount control) is set to "0", there is no effect because image control is not performed even with a printing interruption and any setting number of 08-2509 and 08-9199.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

The image quality needs to be constantly maintained after the equipment has been unused for a long time

After the equipment has been unused for a long time, change the value for 08-2677 from "0 (OFF)" to "1

(ON)" to stabilize the developer material and the image quality.

<Notes>

The developer material will be stirred and the tribo charge of the toner will be stabilized by changing the

value for 08-2677 from "0 (OFF)" to "1 (ON)". However, long-time usage affects the life of consumables. It is recommended to make a minimal change amount or to return to the default value immediately.

(2) The image density or color during continuous printing on the plain paper can be stabilized by changing the

fusing related settings by means of the following procedures.

 Procedures

Follow the procedure below.

(a) Change the parameter of 08-5241-0 (Temperature correction in ready status, heat roller at normal

temperatures) to "0" (default: "2" (0 deg. C)) and reduce the set temperature by 10 deg. C.

(b) Change the parameter of 08-5241-1 (Temperature correction in ready status, pressure roller at normal

temperatures) to "0" (default: "2" (0 deg. C)) and reduce the set temperature by 10 deg C.

temperatures, color) to "9" (default: "0" (Invalid) and extend the pre-running time for the first printing by 10 sec.

(d) Chang e the parameter of 08-5310-1 (Applicable period of pre-running time for the first printing) to

"0" (default: "8" (10 min.) and change the setting of "Pre-running for the first printing" to "Always use". * "Pre-running for the first printing" means the idling rotation of the Fuser Unit prior to printing.

<Notes>

• Confirm if the firmware version is the latest one before the setting. If not, update it to the latest one.

• After these settings, the machine may go into the “wait” status since the fusing temperature can not follow depending on the usage conditions, such as low temperature, thick paper, just recovering after warming up, etc.

• After these settings, the fusing performance may degrade depending on the usag e conditions, such as low temperature, thick paper, just recovering after warming up, etc. In such a case, return the setting to default.

• These settings extend the First Print Out Time by the period of time required for pre-running of the first printing.

• These settings always perform the pre-running for the first printing of each job by the time r e quired for prerunning of the first print. This results in reducing the life of consumables.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(3) Use the thick paper mode when you print on plain paper.

• If the thick paper mode is used, printing decelerates but image quality becomes more stable because differences in color or temperatures during continuous printing will be reduced.

• Set the thick paper mode following steps (a) to (i) below.

(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the “User Functions” menu. (b) Press the [USER] tab. (c) Press [DRAWER] in the USER menu. (d) Select a drawer that you want to set for thick paper mode and paper size. (e) Press [PAPER TYPE]. (f) Press [THICK 1]. (g) Enter the adjustment mode [05]. Then select the subcode “1” for the code [2934] and change the

setting value to “3”.

• Change the level of transfer roller bias offset in the color mode, the front side of paper. * Check how the copy image changes carefully. The setting value may be changed to “4” or “2” if

required. (h) Place paper to be used on the drawer that you selected in step (d) above. (i) Perform automatic calibration. * Refer to step (2) in “1.1 To Obtain a Darker Image”.

After setting the value, print and check the image quality. If further image quality adjustment is necessary, go to the next step.

(4) Check the life of the consumables (particularly the drum, developer material and transfer belt unit) and

replace them, if necessary.

• When replacing any consumable, use steps (a) to (c). (a) Enter the PM support mode. Reset the counter corresponding to the replaced consumable to "0." * For further information regarding the PM support mode, refer to the Service Handbook. (b) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

Image.

* After replacing any consumable, remember to reset the counter corresponding to it to "0." Otherwise, it

may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

* While replacing any consumable, also check the slit glass in the laser optical unit, and thoroughly clean it,

if it is soiled.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

 Precautions after the completion of the adjustment

• The adjustment may possibly slow down the copying or printing speed, extend the warm-up time when the MFP is returned from the auto power save mode, and shorten the life of the consumables, because of an increase in the number of times image quality control is performed. Therefore, carefully perform the adjustment, while checking the copy or print image.

• Note the following when you print in thick paper mode in step (3):

• Printing speed decelerates to 17.5 sheets per minute (A4/LT) after the adjustment.

• The thick paper mode cannot be set for the LCF (Large Capacity Feeder, optional). Therefore the maximum number of sheets acceptable for continuous printing should be the one for the drawer. However in the copying mode, you can set the thick paper mode to more than one drawer and copy more paper continuously with the automatic drawer change function.

• The density level of the halftone image may differ from that of the plain paper mode after the adjustment.

• The PM counter value increases by 2 counts for 1 sheet of thick paper.

 Remarks

• Enter the value mentioned in the procedures or one within the recommended value range for the adjustment. Otherwise, it may cause a loss in MFP performance, including slowdown in the copying or printing speed.

• When replacing any consumable, refer to the relevant information in the Service Manual and Service Handbook.

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.5 To Correct Out-of-Registration Colors

Before the adjustment After the adjustment

The text and background are misaligned or out of registration.

Text is aligned wi th the background an d a clear

copy/print image is obtained.

 Explanation

Colors of text or a thin line are sometimes printed out of alignment. Perform color registration control, in order to print or copy without out-of-registration colors.

 Procedures

* The service technician must perform the adjustment in accordance with the procedure below.

(1) Make sure that no out-of-registration colors are visible on an original.

(2) Check the direction in which colors are misaligned.

* This adjustment is intended to correct misaligned colors due to differences between the paper feeding

speed and rotating speed of the transfer belt. Therefore, it will be effective, only if colors are misaligned in the paper feeding direction (or the secondary scanning direction). This adjustment cannot improve misaligned colors in the direction perpendicular to paper feeding (or primary scanning) or in the secondary scanning direction periodically (partially at regular intervals). Refer to "Troubleshooting for the Image 1) Color deviation" in the Service Manual.

(3) Enter adjustment mode [05] and print out the test print pattern to correct out-of-registration colors.

(a) Enter adjustment mode [05]. Select code [4719]. Press the [START] button.

• Registration control will be forcibly performed.

(b) Enter code [104] corresponding to a desired test print pattern. Press the [FAX] button.

• Paper is fed from the drawer to print out a test print pattern.

Code Test print pattern Paper size No. of copies

104

Test print pattern for identifying

out-of-registration colors

A3/LD 2

* Jot down the "paper feeding direction" on the printed test print pattern beforehand. This facilitates

identifying out-of-registration colors in the subsequent adjustment. Use only the second page of the test print pattern.

Paper feeding direction Paper feeding direction

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(4) Check the second page of the printed test print pattern to identify a pattern for the out-of-registration colors.

* There are 2 patterns for the out-of-registration colors. Check which pattern the out-of-registration colors to

adjust on the body are included.

Pattern A for out-of-registration colors

Pattern B for out-of-registration colors

Paper feeding speed

faster than transfer belt

rotating speed

Paper feeding direction

Patch eliminated at the trailing edge

Patch eliminated at the leading edge

Page 2

Paper feeding speed

slower than transfer belt

rotating speed

Black belt at the leading edge in the paper feeding direction

Paper feeding direction

Patch eliminated at the leading edge

Patch eliminated

trailing edge

Page 2

Page number

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1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

(5) Finely adjust the rotating speed of the registration motor, in accordance with a pattern for the out-of-

registration colors.

• Use steps (a) to (b) to perform the adjustment. (a) Enter adjustment mode [05]. Select code [4523]. Finely adjust the rotating speed of the registration

motor.

• Adjust the values in accordance with a pattern for the out-of-registration colors as shown in the table below.

Pattern for

out-of-

registration

colors

[05]

code

Subcode

Recommended value

Acceptab

le value

range

Default

Pattern A

e-STUDIO2040C: 131 to 135

e-STUDIO2540C / 3040C / 3540C /

4540C : 129 to 133

(Set a value smaller than default)

Pattern B

05-4523 0

e-STUDIO2040C: 137 to 141

e-STUDIO2540C / 3040C / 3540C /

4540C : 135 to 139

(Set a value larger than default)

0 to 255

e-STUDIO2040C:

136

e-STUDIO2540C / 3040C / 3540C /

4540C: 134

(b) After performing registration control, print out the test print pattern to check whether the misaligned

colors have been improved. * For further information regarding the adjustment procedures, refer to procedures (3) and (4).

* Repeatedly use procedures (3) to (5) as necessary, to select a proper value.

<Hint> When subcode "0" is adjusted for code 05-4523, the correlation between the paper feeding speed

and rotating speed of the transfer belt will be corrected in every paper mode. However, when colors are misaligned on an image printed in the thick paper mode after the adjustment for

subcode "0", adjust subcode "3" (during deceleration in the thick paper mode). * For subcode "3," use the steps and recommended values for subcode "0." * Paper for printing a test print pattern will only be fed from the drawer. Load the desired

number of sheets of thick paper in the drawer, in order to print the test print pattern on thick paper.

* Adjust subcode "0" and then subcode "3," in order to adjust only misalig ned colors in the thick

paper mode.

1 - 26

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

 Precautions after the completion of the adjustment

Nothing in particular.

 Remarks

• Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

•Out-of-registration colors cannot always be perfectly corrected; this depends on the type of text or lines to print.

• Also, refer to the relevant information in the Service Manual for further information regarding color registration control procedures.

1 - 27

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

1.6 To customize the image density

Explanation

When the density of a solid area is adjusted to obtain the image a user desires, the necessary correction value is varied by the installation environment or the usage of consumables such as the developer material and the drum. In the developer bias setting in "1.2 To Adjust the Density of an Entire Copy", since the correction value is varied not by the consumables or equipment state, it needs to be rechecked according to the variation. Customization of stable image quality is enabled by changing the target value of high density control, not by consumables or the equipment state.

Procedures

(1) Change the setting value for 05-2662 to alter the target value of high density control.

* Change the setting value for 05-2662 to alter the target value of high density control.

05-2662 (Target value of high density

control)

Y M C BK

Sub code 0 1 2 3

Models in which EFI is installed

(Compatible with previous models)*3

345 345 330 410

Models in which EFI is not installed (default) 310 310 300 318

*1. This setting will automatically be forwarded to 05-2662 after the default setting of the EFI Printer Board

(08-9951) is performed. This will return to the restore setting of the EFI Printer Board (08-9952).

*2. The toner consumption of the equipment in which the EFI Printer Board is installed is equivalent to that

of e-STUDIO2020C/2330C/2820C/2830C/3520C/3530C/4520C.

*3. The solid density will be almost the same as that of the previous model, e-

STUDIO2020C/2330C/2820C/2830C/3520C/3530C/4520C.

*4. Adjust the value of each color in the following range.

Maximum Minimum

Y 345 280

M 345 285

C 330 265 K 410 277

 Precautions after the completion of the adjustment

1 - 28

1. General Adjustments – Copying, Printing and e-Filing (Output from Box)

• No effect of the adjustment may appear, depending on the operating environment of the MFP. Therefore, carefully perform the adjustment, while checking the copy or print image.

2 - 1

2. Copier-specific Adjustments

2.1 To Copy Text Clearly (To eliminate faint, smudged or blurred text)

Before the adjustment After the adjustment

When a light print image is copied, the text looks blurred.

The graphic image and text look darker and

sharper.

 Explanation

Perform image processing, in order to obtain a sharp and dark copy image when copying an original containing light text and graphic images, or a light copy image when copying an original containing a highly colored text and copy image.

 Procedures

* The procedure to use varies, depending on whether to adjust the copy image quality in the Black mode, Full

color mode or Auto color mode. Refer to the procedure corresponding to the particular user’s request.

2 - 2

2. Copier-specific Adjustments

2.1.1 To Adjust the Copy Image Quality in the Black Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more than required or loses the effectiveness of the adjustment, restore the settings made in the previously used procedure to the original ones. Then use other procedures.

* Both the service technician and the user can use procedures (1), (2) and (4). * Only the service technician must use procedures (3), (5) and (6).

(1) Press the [BASIC] button on the Control Panel. Press the [ ] button to increase the copy density.

After increasing the copy density, copy and check the copy image quality. With the copy density set to the maximum, if further image quality adjustments are still necessary, use the

next procedure.

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SHARP] button to increase the sharpness intensity.

After increasing the sharpness intensity, copy and check the copy image quality. With the sharpness intensity set to the maximum, if further image quality adjustments are still necessary, the

service technician must use the following procedures.

(3) Enter adjustment mode [05]. Increase the values for codes [7056] to [7058] and [7806] to [7809] to make

the copied text darker (sharpness level increases).

• The code to use varies according to the original mode (Text/Photo, Text or Photo). Adjust the value for [05] code corresponding to the original mode in which you would like to improve the image quality and set values larger than "128".

Original mode [05] code

Recommended

value

Acceptable value range

Default

Text / Photo 05-7056

Text 05-7057

Photo 05-7058 Image smoothing 05-7809 Auto color (when

judged as black)

Text/Photo

05-7806

Auto color (when

judged as black)

Text

05-7807

Auto color (when

judged as black)

Photo

05-7808

Set a value larger than

128.

0 to 255 128

* Setting "0" provides the softest image, while setting "255" provides the sharpest image.

Changing the values for these codes will change the sharpness intensity, when the "Sharpness" i ndicator in the "IMAGE" menu is set to the center. Remember that 1 step of the indicator will increase or decrease the sharpness intensity by 25. If the sharpness intensity of the center value is changed, each step of the indicator will be changed accordingly. (For instance, if the center value is increased by 25 (sharper), the value of each step of the indicator will also be increased by 25 (sharper).)

2 - 3

2. Copier-specific Adjustments

After increasing the sharpness intensity, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

(4) Press the [BASIC] button on the Control Panel. Select "TEXT" from among the original mode options.

* To have "TEXT" selected from among the original mode options by default, refer to procedure (1) in 2.8

To Eliminate Moiré.

After selecting the Text mode, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(5) Enter adjustment mode [05]. Decrease the values for codes [7097], [7098], [7252], [7102] and [7103] to

make the text darker (improving faint text or thin lines).

Original mode [05] code

Recommended

value

Acceptable

value range

Default

Text / Photo 05-7097

Text 05-7098

User custom 05-7252

Auto color (when

judged as black)

Text/Photo

05-7102

Auto color (when

judged as black)

Text

05-7103

Set a value smaller

than 2.

0 to 4 2

* Set the value in increments of approximately 1, while checking the copy image until th e optimum value is

obtained.

After increasing the copy density, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

2 - 4

2. Copier-specific Adjustments

(6) Enter adjustment mode [05]. Change the values for codes [7190] to [7192] and [7956] to [7959] to adjust the

gamma balance in each of medium- and high-density areas.

Original mode [05] code Subcode

Recommended

value

Acceptable value range

Default

Text / Photo 05-7190

Text 05-7191

Photo 05-7192 Image smoothing 05-7956 Auto color (when

judged as black)

Text/Photo

05-7957

Auto color (when

judged as black)

Text

05-7958

Auto color (when

judged as black)

Photo

05-7959

1/2

Set a value larger

than 128.

0 to 255 128

* Set the value in increments of approximately 20, while checking the copy image until the optimum value is

obtained. (Please be careful because the gradation (or density) of the medium-density area may exceed that of the high-density area, depending on the set value.)

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted. The density of light text or a graphic image will vary, if the medium- or high-density area is mainly adjusted. Setting "0" for the subcode allows you to adjust the lowdensity area. But it will not affect the light text or graphic images. Therefore, never change the value for the low-density area.

Subcode Area where the density is adjusted

1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

The adjustment may possibly cause an increase in the amount of toner used, moiré, blurred text (small, dark text blurred), diminished photo images or gradational images (less accurate reproducibility of halftones). Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradat ion i n the image quality and a reduction i n the life of the consum ables.

2 - 5

2. Copier-specific Adjustments

2.1.2 To Adjust the Copy Image Quality in the Full Color Mode

* The setting value for the Full color mode shall be applied also when th e original is judged as the full color

image in the Auto color mode.

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1), (2) and (5). * Only the service technician must use procedures (3) and (4).

(1) Press the [BASIC] button on the Control Panel. Press the [ ] button to increase the copy density.

After increasing the copy density, copy and check the copy image quality. With the copy density set to the maximum, if further image quality adjustments are still necessary, use the

next procedure.

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SHARP] button to increase the sharpness intensity.

After increasing the sharpness intensity, copy and check the copy image quality. With the sharpness intensity set to the maximum, if further image quality adjustments are still necessary, the

service technician must use the following procedures.

(3) Enter adjustm ent mode [05]. Increase the values for codes [7796 to 7800] to strengthen the copy density of

text (or increase the sharpness intensity).

• The code to use varies according to the original mode (Text/Photo, Text, Printed image, Photo or Map). Adjust the value for [05] code corresponding to the original mode in which you would like to improve the image quality and set values larger than "128" for codes 05-7796 to 7800.

Original mode [05] code Recommended value Acceptable value range Default

Text/Photo 05-7796

Text 05-7797

Printed image 05-7798

Photo 05-7799

Map 05-7800

Set a value larger than 128. 0 to 255 128

* Setting "0" provides the softest image, while setting "255" provides the sharpest image.

2 - 6

2. Copier-specific Adjustments

* The values adjusted for the sharpness intensity are shared in the Full color mode with the Printed image

mode selected and in the Black mode with the Photo mode selected. Therefore, adjusting the copy image quality in either of the modes affects that in the other mode. Perform copy image quality adjustment in the mode that is used for the adjustment, while checking the one in the other mode.

After increasing the sharpness intensity, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

(4) Enter adjustment mode [05]. Change the values for codes [7889 to 7892] to adjust the maximum color

density of the text.

Color to

adjust

[05] code Recommended value

Acceptable value range

Default

(Yellow)

05-7889

(Magenta)

05-7890

(Cyan)

05-7891

Set a value larger than 5 to increase the density.

Set a value smaller than 5 to decrease the density.

(Black)

05-7892

Set a value larger than 8 to increase the density.

Set a value smaller than 8 to decrease the density.

0 to 10

* Set the value in increments of 1, while checking the copy image until the optimum value is obtained.

* This adjustment will be effective, only if the "TEXT/PHOTO" or "TEXT" mode is selected from among

the original mode options. If the "TEXT/PHOTO" mode is selected, the adjustment will affect only text (or an area which is recognized as text).

After adjusting the maximum color density of the text, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

(5) Press the [BASIC] button on the Control Panel. Select "TEXT" from among the original mode options.

* To have "TEXT" selected from among the original mode options by default, refer to procedure (1) in 2.8

To Eliminate Moiré.

 Precautions after the completion of the adjustment

The adjustment may possibly cause an increase in the amount of toner used, moiré, blurred text (small, dark text blurred), diminished photo images or gradational images (less accurate reproducibility of halftones), and noise around the text on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

2 - 7

2. Copier-specific Adjustments

2.1.3 To Adjust the Copy Image Quality in the Auto Color Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (2). * Only the service technician must use procedure (3) and (4).

(1) Press the [BASIC] button on the Control Panel. Press the [ ] button to increase the copy density.

After increasing the copy density, copy and check the copy image quality. With the copy density set to the maximum, if further image quality adjustments are still necessary, use the

next procedure.

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SHARP] button to increase the sharpness intensity.

After increasing the sharpness intensity, copy and check the copy image quality. With the sharpness intensity set to the maximum, if further image quality adjustments are still necessary, the

service technician must use the following procedure.

(3) Enter adjustment mode [05]. Increase the values for codes [7796], [7797], [7806] and [7807] to make the

copied text darker (the sharpness level increases).

• In the adjustment mode [05], original modes that allow the adjustment of the sharpness level for the Auto Color mode is only the “TEXT/PHOTO” mode and the “TEXT” mode. Set a value larger than “128” for each code.

Original mode [05] code

Recommended

value

Acceptable value range

Default

Text / Photo 05-7796

Text 05-7797

Auto color (when

judged as black)

Text/Photo

05-7806

Auto color (when

judged as black)

Text

05-7807

Set a value larger than

128.

0 to 255 128

* Setting "0" provides the softest image, while setting "255" provides the sharpest image. Changing the values for these codes will change the sharpness intensity, when the "Sharpness" indicator in

the "IMAGE" menu is set to the center. Remember that 1 step of the indicator will increase or decrease the sharpness intensity by 25. If the sharpness intensity of the center value is changed, each step of the indicator will be changed accordingly. (For instance, if the center value is increased by 25 (sharper), the value of each step of the indicator will also be increased by 25 (sharper).)

* The adjustment value for color mode will be adopted if the original is judged as color with the ACS

function.

After setting the value, copy and check the image quality. If further image quality adjustment is necessary, go to the next step.

2 - 8

2. Copier-specific Adjustments

(4) Enter the adjustment mode [05] and adjust the gamma balance in each of medium- and high-density areas.

Original mode [05] code Subcode

Recommende

d value

Acceptable

value range

Default

Text/Photo 05-7190

Text 05-7191

Photo 05-7192

Auto color (when

judged as black)

Text/Photo

05-7957

Auto color (when

judged as black)

Text

05-7958

Auto color (when

judged as black)

Photo

05-7959

1/2

Set a value larger

than 128.

0 to 255 128

Subcode

Area where the density

is adjusted

1 Medium-density area 2 High-density area

* Set the value in increments of approximately 20, while checking the copy image until the optimum value is

obtained. Note that gradations (density level) in the medium- and high-density areas may be reversed with some setting values.

* Subcodes to be entered differ depending on the target density area. Refer to the table above to enter the

subcode for the area to be adjusted. The density of thin text or illustrations is changed by adjusting mainly the setting value for the medium- or high-density area. Do not change the setting value for the low-density area because if the subcode is set at “0”, the density of the low-density area is adjusted but there is little or no effect on changing the density of thin text or illustrations.

After setting the value, copy and check the image quality.

 Precautions after the completion of the adjustment

 Remarks

2 - 9

2. Copier-specific Adjustments

2.2 To Closely Match the Color Balance of the Original

Before the adjustment After the adjustment

The copy image looks yellowish, compared with the original.

The color balance of the copy image is closely

matched with that of the original.

 Explanation

Depending on the color balance of the original, the copy image sometimes look s different from the original. Perform image quality control, automatic calibration, color adjustment (color balance adjustment or RGB adjustment) and the color density adjustment, in order to match the color balance of the copy image with that of the original.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Only the service technician must use procedures (1) and (5). * Both the service technician and the user can use procedures (2) to (4). * Procedure (3) "Hue adjustment" cannot be selected concurrently with procedure (4) "Color balance/RGB

adjustments." Performing either of the adjustments and then another adjustment clears what has been previously

adjusted. For example, using procedure (3) and then procedure (4) clears the adjusted hue using procedure (3).

Copy Copy

2 - 10

2. Copier-specific Adjustments

(1) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be forcibly performed to correct the color balance and copy density.

After exercising image quality control, use procedure (2).

(2) Perform automatic calibration to correct variations in the copy density.

* [ADMIN] is selected from among the [CALIBRATION DISPLAY LEVEL] options by default. In other

words, an administrator is authorized to operate automatic calibration. But the [USER] option can also be selected to allow the user to operate it. Refer to the MFP Management Guide for further information regarding how to select the [CALIBRATION DISPLAY LEVEL] option.

• Use steps (a) through (i) to perform automatic calibration.

(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu. (b) Press the [ADMIN] tab. (c) Enter an administrator password of 6 to 10 digits. Press the [ENTER] button. (d) Press the [GENERAL] button. (e) Press the [CALIBRATION] button. (f) Press the [COPY] button. (g) Press the [CALIBRATION] button to print out the test chart. (h) Place the printed test chart on the original glass. (i) Press the [START] button to perform calibration. When the calibration comes to an end, the

message "Scanning and calibrating" will disappear.

* As a result of the above steps, the copy image quality will be corrected in the Full color mode and

the Black and White mode simultaneously.

After performing automatic calibration, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(3) Perform hue adjustment to adjust the tint of the color in the color area to change.

• Use steps (a) through (d) to perform the adjustment. (a) Press the [IMAGE] button on the Control Panel. (b) Press [HUE] button. (c) Press the [+] or [-] button on the indicator of the color to adjust.

* Pressing the [+] or [-] button on the indicator changes the hue as shown below.

(For instance, press the [+] button at R (Red). Then the tint of R (Red) is cl osely matched with that of Y (Yellow). Press the [-] button at R (Red). Then the tint of R (Red) will be closely matched with that of M (Magenta).

(d) Enter the [ENTER] button.

After adjusting the hue, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

R: -2 R: +2

2 - 11

2. Copier-specific Adjustments

(4) Perform color balance adjustment or RGB adjustment to adjust the tint of colors in general.

• Use steps (a) through (d) to perform the adjustment. (a) Press the [IMAGE] button on the Control Panel. (b) Press the [COLOR BALANCE] button to adjust the color balance by changing the amount of toner

(C, M, Y and K) or the [RGB ADJUSTMENT] button to adjust the color balance by changing the intensity of R, G and B.

* After selecting the color balance by changing the amount of toner (C, M, Y and K), press the

[DETAIL] button. The tint of the color can be adjusted according to density area (low-, mediumor high-density area).

(d) Press the [ENTER] button .

After adjusting the tint of the colors, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(5) Enter adjustment mode [05]. Change the values for codes [7960 to 7979] to adjust the color density.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

Printed image 05-7962 0/1/2

Photo 05-7963 0/1/2

(Yellow)

Map 05-7964 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

Printed image 05-7967 0/1/2

Photo 05-7968 0/1/2

(Magenta)

Map 05-7969 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

Printed image 05-7972 0/1/2

Photo 05-7973 0/1/2

(Cyan)

Map 05-7974 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

Printed image 05-7977 0/1/2

Photo 05-7978 0/1/2

(Black)

Map 05-7979 0/1/2

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the original mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

2 - 12

2. Copier-specific Adjustments

 Precautions after the completion of the adjustment

The adjustment may possibly cause offset failure, particularly when the highly colored original is copied in th e Photo mode. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

2 - 13

2. Copier-specific Adjustments

2.3 To Improve the Reproducibility of Gray

Before the adjustment After the adjustment

Another color (M) is blended in the gray area. No undesired color is blended. A clear copy

image is obtained.

 Explanation

When an original containing gray is copied, another color may be blended in the gray area. Perform image quality control, automatic calibration, color adjustment (color balance adjustment or RGB adjustm ent) and color density adjustment, in order to avoid this problem (or to obtain an achrom atic color, for instance).

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Only the service technician must use procedures (1) and (4). * Both the service technician and the user can use procedures (2) and (3).

(1) Enter adjustment mode [05]. Select code [2742]. Press the [START] button.

• Image quality control will be forcibly performed to correct the color balance and copy density.

After exercising image quality control, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(2) Perform automatic calibration to correct variations in the copy density.

* For further information regarding the adjustment procedures, refer to procedure (2) in 2.2 To Closely

Match the Color Balance of the Original.

* [ADMIN] is selected from among the [CALIBRATION DISPLAY LEVEL] options by default. In other

After performing automatic calibration, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 14

2. Copier-specific Adjustments

(3) Perform color balance adjustment or RGB adjustment to adjust the tint of colors in general.

* For further information regarding the adjustment procedures, refer to procedure (4) in 2.2 To Closely

Match the Color Balance of the Original.

After adjusting the tint of colors, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(4) Enter adjustment mode [05]. Change the values for codes [7976 to 7979] to adjust the color density.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

Printed image 05-7962 0/1/2

Photo 05-7963 0/1/2

(Yellow)

Map 05-7964 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

Printed image 05-7967 0/1/2

Photo 05-7968 0/1/2

(Magenta)

Map 05-7969 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

Printed image 05-7972 0/1/2

Photo 05-7973 0/1/2

(Cyan)

Map 05-7974 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

Printed image 05-7977 0/1/2

Photo 05-7978 0/1/2

(Black)

Map 05-7979 0/1/2

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is obtained.

* The value for the code corresponding to the original mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

The adjustment may possibly ca use of fset failure, pa rticularly w hen a highly col ored ori ginal is copied i n the Photo m ode. Also, it may cause degradation in the color reproducibility. (Excessively enhancing the tint of black makes other colors, such as skin tones, look dull.) Therefore, carefully perform the adjustm ent, while checking the copy image.

 Remarks

2 - 15

2. Copier-specific Adjustments

2.4 To Copy in Vivid Colors

Before the adjustment After the adjustment

When a copy is made without any adjustments, the vividness is insufficient on the copy image.

The copy image is obtained in vivid colors.

 Explanation

When a copy is made without any adjustments, the vividness may be insufficient on the copy image. Perform saturation adjustment, color adjustment (color balance adjustment or RGB adjustment), and color density adjustment, in order to obtain a copy image in vivid colors.

 Procedures

* You can start with any of the procedures other than (5). But it is recommended to perform the procedures in

order, as listed below. You can use one procedure in conjunction with another. But if this changes the image

quality more than required or loses the effectiveness of the adjustment, restore the settings made in the

previously used procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) to (3). * Only the service technician must use procedure (4). * Only if the vividness of R (Red) is still insufficient even after procedures (1) to (4) have been used, the service

technician must use procedure (5).

2 - 16

2. Copier-specific Adjustments

(1) Press the [IMAGE] button on the Control Panel. Press the [ONE TOUCH ADJUSTMENT] button.

Press the [VIVID] button.

After selecting the "Vivid" option, copy and check the copy image quality. When the copy image quality with the "Vivid" option is insufficient, cancel the "Vivid" option and use the

next procedure. (The one-touch adjustment can be canceled by pressing the [ONE TOUCH ADJUSTMENT] button again.)

(2) Perform saturation adjustment to adjust the overall saturation.

• Use steps (a) through (d) to perform the adjustment.

(a) Press the [IMAGE] button on the Control Panel. (b) Press the [SATURATION] button. (c) Press the [+] button to increase the saturation of the copy image. (d) Press the [ENTER] button .

After adjusting the saturation, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(3) Perform color balance adjustment or RGB adjustment to adjust the tint of colors in general.

* For further information regarding the adjustment procedures, refer to procedure (4) in 2.2 To Closely

Match the Color Balance of the Original.

After adjusting the tint of colors, copy and check the copy image quality. If further image quality adjustments are still necessary, the service technician must use the next procedure.

2 - 17

2. Copier-specific Adjustments

(4) Enter adjustment mode [05]. Change the values for codes [7960 to 7979] to adjust the color density.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

Printed image 05-7962 0/1/2

Photo 05-7963 0/1/2

(Yellow)

Map 05-7964 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

Printed image 05-7967 0/1/2

Photo 05-7968 0/1/2

(Magenta)

Map 05-7969 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

Printed image 05-7972 0/1/2

Photo 05-7973 0/1/2

(Cyan)

Map 05-7974 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

Printed image 05-7977 0/1/2

Photo 05-7978 0/1/2

(Black)

Map 05-7979 0/1/2

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the original mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

After setting the values, copy and check the copy image quality. Only if the vividness of R (Red) is still insufficient even after all the above procedures have been used, must

the service technician use the next procedure.

2 - 18

2. Copier-specific Adjustments

(5) Enter adjustment mode [05]. Change the value for code [2905] to adjust the transfer (1st transfer) roller bias

output. (Adjust the offset voltage of transfer roller bias for C (Cyan) and K (Black) so as to increase the density of R (Red).)

• The code to use varies according to the paper type and color to adjust. Adjust the value for the subcode corresponding to the color for which you would like to improve the image quality. Set the value within a range of "2" to "5" to obtain the highest density of R (Red).

Paper type

Color to

adjust

[05] code Subcode

Recommended

value

Acceptable

value range

Default

C (Cyan) 2

Plain paper

K (Black) 3

C (Cyan) 8

Thick

K (Black)

05-2905

2 to 5 0 to 10 5

* Never change the values for subcodes other than the above. Otherwise, it may cause a loss in MFP

performance, including degradation in the image quality.

<Note> • The adjustment may possibly decrease the density of G (Green), B (Blue) and K (Black)

extremely. Therefore, carefully perform the adjustment, while checking the copy image.

• Unless this adjustment changes the density of R (Red), return the values to the default (set

value: 5).

• This adjustment may affect not only the copy image but also every image quality such as the

printout. Therefore, perform the adjustment, being aware that the image quality of all future printouts will be changed, when printing out originals other than the one that is used for the adjustment.

 Precautions after the completion of the adjustment

 Remarks

2 - 19

2. Copier-specific Adjustments

2.5 To Make the Pale Area of the Original Look Darker and Sharper

(To improve the highlight reproducibility)

Before the adjustment After the adjustment

The splashing area (highlight) is blurred. A clear copy image of the splashing area

is obtained.

 Explanation

Perform the copy density adjustment and background adjustment, in order to make the pale area (highlight) of the original look darker and sharper on the copy.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (3). * Only the service technician must use procedures (2) and (4).

(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.

Press the [DARK] button to darken the background.

After increasing the background density, copy and check the copy image quality. With the background density set to the maximum, if further image quality adjustments are still necessary,

the service technician must use the next procedure.

2 - 20

2. Copier-specific Adjustments

(2) Enter the adjustment mode [05]. Change the values for the follo wing codes below to adjust the density level

of the background. * The highlighted area will become highly visible, if the background density is increased.

Color mode Original mode [05] code

Recommended

value

Acceptab

le value

range

Defaul

Text/Photo 05-7656

Text 05-7657

Full color / Auto color

(when judged as color)

Printed Image 05-7658

Photo 05-7659

Map 05-7660

Full color

User custom 05-7661

Set 127 or smaller.

Text/Photo 05-7676

Text 05-7677

Auto color

(when judged as black)

Printed Image 05-7043 *1

Text/Photo 05-7678

Text 05-7679

Auto color

(when judged as black)

Printed Image 05-7048 *2

Text/Photo 05-7033

Text 05-7034

Photo 05-7043 *1

Image

smoothing

05-7044

Black

User custom 05-7279

Text/Photo 05-7041

Text 05-7042

Photo 05-7048 *2

Image

smoothing

05-7049

Black

User custom 05-7280

Text/Photo 05-7754

Text 05-7755

Printed Image 05-7756

Photo 05-7757

Mono color

Map 05-7758

Text/Photo 05-7759

Text 05-7760

Twin color

Printed Image 05-7761

Set 128 or larger.

0 to 255 128

*1 and *2 are common settings.

2 - 21

2. Copier-specific Adjustments

To make another adjustment of the background for Full color after the above adjustment

* Adjust the density level while checking the color balance since it may differ from that of the original after

the adjustment.

Color mode Original mode [05] code

Recommended

value

Acceptable

value range

Defa

ult

Text/Photo 05-7744

Text 05-7745

Full color / Auto color

(when judged as color)

Printed Image 05-7746

Photo 05-7747

Map 05-7748

"Full color

<Automatic

adjustment>"

User custom 05-7762

Text/Photo 05-7749

Text 05-7750

Full color / Auto color

(when judged as color)

Printed Image 05-7751

Photo 05-7752

Map 05-7753

Full color

User custom 05-7763

Set 128 or larger. 0 to 255 128

* The value for automatic adjustment will be applied only if the automatic copy density mode is selected.

On the other hand, the value for manual adjustment will be applied only if the manual copy density mode is selected.

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

<Note> "Making the highlighted area more visible (or increasing the background density)" and

"eliminating the background color (or decreasing the background density)" are mutually contradictory. If the background color is darkened to make the highlighted area more visible, the hue of the background may change.

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(3) Press the [BASIC] button on the Control Panel. Press the [ ] button to increase the copy density.

After increasing the copy density, copy and check the copy image quality. With the copy density set to the maximum, if further image quality adjustments are still necessary, the

service technician must use the next procedure.

2 - 22

2. Copier-specific Adjustments

(4) Enter adjustment mode [05]. Change the values for codes [7960 to 7979] to adjust the color density.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1

Text 05-7961 0/1

Printed image 05-7962 0/1

Photo 05-7963 0/1

(Yellow)

Map 05-7964 0/1

Text/Photo 05-7965 0/1

Text 05-7966 0/1

Printed image 05-7967 0/1

Photo 05-7968 0/1

(Magenta)

Map 05-7969 0/1

Text/Photo 05-7970 0/1

Text 05-7971 0/1

Printed image 05-7972 0/1

Photo 05-7973 0/1

(Cyan)

Map 05-7974 0/1

Text/Photo 05-7975 0/1

Text 05-7976 0/1

Printed image 05-7977 0/1

Photo 05-7978 0/1

(Black)

Map 05-7979 0/1

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the original mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set the

subcode for the area to be adjusted. The density of the highlighted area will vary, if the low- or mediumdensity area is mainly adjusted. Setting "2" for subcode allows you to adjust the high-density area. But it will not affect the highlighted area. Therefore, never change the value for the high-densit y area.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area

 Precautions after the completion of the adjustment

The adjustment may possibly provide an excessively dark background. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

2 - 23

2. Copier-specific Adjustments

2.6 To Eliminate the Background Color

Before the adjustment After the adjustment

The background color of the original is also copied. Therefore, no clear contrast is made between the background and text.

The background color is eliminated, allowing

clear contrast between the background and text.

 Explanation

When a full-color original, such as colored paper, is copied, its background color is also copied. Therefore, no clear contrast is made between the background and the text on the copy. Perform background adjustment, in order to copy an original with a highly colored background, while eliminating the background color or making it white.

 Procedures

* The procedure to use varies, depending on whether to adjust the copy image quality in the Black mode or the

Full color mode. Refer to the procedure corresponding to the user’s particular request.

2 - 24

2. Copier-specific Adjustments

2.6.1 To Adjust the Copy Image Quality in the Black Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedure (1). * Only the service technician must use procedures (2) to (4).

(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.

Press the [LIGHT] button to decrease the background density .

After decreasing the background density, copy and check the image quality. With the background density set to the minimum, if further image quality adjustments are still necessary, the

service technician must use the next procedure.

(2) Enter adjustment mode [05]. Change the values for codes [7033] to [7034], [7041] to [7044], [7048] to

[7049], [7279] to [7280] and [7676] to [7679] adjust the density level of the background.

Adjustment Original mode [05] code

Recommended

value

Acceptable

value

range

Default

Text/Photo 05-7033

Text 05-7034

Photo 05-7043 *1

Image smoothing 05-7044

Black

<Automatic density

adjustment>

User custom 05-7279

Text/Photo 05-7041

Text 05-7042

Photo 05-7048 *2

Image smoothing 05-7049

Black

<Manual density

adjustment>

User custom 05-7280

Text/Photo 05-7676

Text 05-7677

Auto color (black)

<Automatic density

adjustment>

Photo 05-7043 *1

Text/Photo 05-7678

Text 05-7679

Auto color (black)

<Manual density

adjustment>

Photo 05-7048 *2

Set 127 or larger. 0 to 255 128

*1 and *2 are common settings. * Set the value in increments of approximately 25, while checking the copy image until the optimum value is

obtained.

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 25

2. Copier-specific Adjustments

(3) Enter adjustment mode [05]. Change the values for codes [7190] to [7192] to adjust the gamma balance in

each of low- and medium-density areas.

Original

mode

[05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7190 0/1

Text 05-7191 0/1

Photo 05-7192 0/1

Set a value smaller than 128. 0 to 255 128

* Set the value in increments of approximately 20, while checking the copy image until the optimum value is obtained.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted. The background density will vary, if the low- or medium-density area is mainly adjusted. Setting "2" for the subcode allows you to adjust the high-density area. But it will not affect the background density. Therefore, never change the value for the high-density area.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area

After adjusting the gamma curve balance, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(4) Enter the adjustment mode [05]. Change the values for codes [7286] and [7287] to set the range correction

operation in the manual density mode fixed.

• The code to be set differs depending on the original mode (Text/Photo or Text). Select the [05] code for the target original mode and change the value to “0”.

Original mode [05] code

Recommended

value

Acceptable

value range

Default

Text/Photo 05-7286

Text 05-7287

0 0, 1 1

* Explanation for setting values

Setting

value

Range correction

operation

0 Fixed 1 Varied

 Precautions after the completion of the adjustment

The adjustment may possibly cause text handwritten with a pencil or light text to become illegible on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

2 - 26

2. Copier-specific Adjustments

2.6.2 To Adjust the Copy Image Quality in the Full Color Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (4). * Only the service technician must use procedures (2) and (3).

(1) Press the [AUTO] button on the Control Panel to select the automatic density adjustment.

(2) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.

Press the [LIGHT] button to decrease the background density .

After decreasing the background density, copy and check the image quality. With the background density set to the minimum, if further image quality adjustments are still necessary, the

service technician must use the next procedure.

(3) Enter the adjustment mode [05]. Change the values for the following codes below to adjust the density level

of the background.

Adjustment Original mode [05] code Recommended value

Acceptable

value range

Default

Text/Photo 05-7656

Text 05-7657

Full color / Auto color

(when judged as color)

Printed image 05-7658

Photo 05-7659

Map 05-7660

Full color

User custom 05-7661

Set a value larger than

128.

0 to 255 128

To make another adjustment of the background for Full color after the above adjustment

* Adjust the density level while checking the color balance since it may differ from that of the original after

the adjustment.

Adjustment Original mode [05] code Recommended value

Acceptable

value range

Default

Text/Photo 05-7744

Text 05-7745

Full color / Auto color

(when judged as color)

<Automatic

adjustment>

Printed image 05-7746

Photo 05-7747

Map 05-7748

Full color

<Automatic

adjustment>

User custom 05-7762

Text/Photo 05-7749

Text 05-7750

Full color / Auto color

(when judged as color)

Printed image 05-7751

Photo 05-7752

Map 05-7753

Full color

(when judged as color)

User custom 05-7763

Set a value larger than

128.

0 to 255 128

2 - 27

2. Copier-specific Adjustments

* The value for au tomatic offsetting adjustment for background processing will be applied, only if the

automatic copy density mode is selected. On the other hand, the value for manual offsetting adjustment for background processing will be applied, only if the manual copy density mode is selected.

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the origin al mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The value adjusted for the background density is shared in the Full color mode with the Printed image

* In the manual density adjustment, images are processed with the highlighting reproducibility given priority.

Therefore it is recommended to select the automatic density adjustment in order to make the background lighter.

<Note> "Making the highlighted area more visible (or increasing the background density)" and

"eliminating the background color (or decreasing the background density)" are mutually contradictory. If the density of the background color is decreased, the highlighted area may become less visible.

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, or background elimination is necessary according to

color, use the next procedure.

2 - 28

2. Copier-specific Adjustments

(4) Enter adjustment mode [05]. Change the values for codes [7960 to 7979] to adjust the color density.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1

Text 05-7961 0/1

Printed image 05-7962 0/1

Photo 05-7963 0/1

(Yellow)

Map 05-7964 0/1

Text/Photo 05-7965 0/1

Text 05-7966 0/1

Printed image 05-7967 0/1

Photo 05-7968 0/1

(Magenta)

Map 05-7969 0/1

Text/Photo 05-7970 0/1

Text 05-7971 0/1

Printed image 05-7972 0/1

Photo 05-7973 0/1

(Cyan)

Map 05-7974 0/1

Text/Photo 05-7975 0/1

Text 05-7976 0/1

Printed image 05-7977 0/1

Photo 05-7978 0/1

(Black)

Map 05-7979 0/1

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the origin al mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted. The background (highlight) density will vary, if the low- or medium-density area is mainly adjusted. Setting "2" for the subcode allows you to adjust the high-density area. But it will not affect the background density. Therefore, never change the value for the high-density area.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 29

2. Copier-specific Adjustments

(5) Press the [BASIC] button on the Control Panel. Select "TEXT" from among the original mode options.

* To have "TEXT" selected from among the original mode options by default, refer to procedure (1) in 2.8

To Eliminate Moiré.

 Precautions after the completion of the adjustment

The adjustment may possibly cause the highlighted area to become less visible on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

2 - 30

2. Copier-specific Adjustments

2.7 To Avoid Copying the Image Seen through the Back of a

Page Printed on Thin Paper

Original printed on thin paper (front) Original printed on thin paper (back)

Before the adjustment After the adjustment

When a double-sided original printed on thin paper is copied, the images seen through the back of the page are also copied.

The images seen through the back of the page

are not copied any more in duplex copying.

 Explanation

When a double-sided original printed on thin paper, such as a brochure and leaflet, is copied, the images seen through the back of the page are also copied. Perform background adjustment, in order to avoid this problem.

2 - 31

2. Copier-specific Adjustments

 Procedures

* The procedure to use varies, depending on whether to adjust the copy image quality in the Black mode or the

Full color mode. Refer to the procedure corresponding to the user’s particular request.

* Refer to the procedure to adjust the copy image quality in the Full color mode with the Printed image mode selected,

in order to adjust the copy image quality in the Black mode with the Photo m ode selected. The value adjusted is

shared in the Black mode with the Photo mode selected and in the Full color mode with the Printed image mode

selected. Therefore, adjusting the copy image quality in either of t he mo des af fects t hat in the other mode.

2.7.1 To Adjust the Copy Image Quality in the Black Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedure (1) and (2). * Only the service technician must use procedures (3) to (5).

(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.

Press the [LIGHT] button to decrease the background density .

After decreasing the background density, copy and check the image quality. With the background density set to the minimum, if further image quality adjustments are still necessary, the

service technician must use the next procedure.

(2) Press the [BASIC] button on the Control Panel. Press the [ ] button to decrease the copy density.

* Move the copy density indicator to the " " side for 1 or 2 steps. The images seen through the back of the page

will no longer be copied. But remember that text will also be lightly copied, depending on the type of original.

After decreasing the copy density, copy and check the copy image quality. With the copy density set to the minimum, if the images seen through the back of the page are still copied, or if

you would like to prevent this problem without changing the copy density of text, use the next procedure.

2 - 32

2. Copier-specific Adjustments

(3) Enter adjustment mode [05]. Change the values for codes [7033] to [7034], [7041] to [7044], [7048] to [7049], [7280] and [7680] to [7679] adjust the density level of the background.

Color mode Original mode [05] code

Recommended

value

Accep

table

value

range

Default

Text/Photo 05-7033

Text 05-7034

Photo 05-7043 *1

Image smoothing 05-7044

Black <Automatic adjustment>

User custom 05-7279

Text/Photo 05-7041

Text 05-7042

Photo 05-7048 *2

Image smoothing 05-7049

Black

<Manual

adjustment>

User custom 05-7280

Text/Photo 05-7676

Text 05-7677

Auto color (black)

Printed Image 05-7043 *1

Text/Photo 05-7678

Text 05-7679

Auto color (black)

<Manual

adjustment>

Printed Image 05-7048 *2

Set a value smaller

than 128.

0 to 255

128

*1 and *2 are common settings.

* Set the value in increments of approximately 25, while checking the copy image until the optimum value is

obtained.

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(4) Enter the adjustment mode [05]. Change the values for codes [7286] and [7287] to make the range

correction operation in the manual density mode fixed.

• The code to be set differs depending on the original mode (Text/Photo or Text). Select the [05] code for the target original mode and change the value to “0”.

Original mode [05] code

Recommended

value

Acceptable

value range

Default

Text/Photo 05-7286

Text 05-7287

0 0, 1 1

* Explanation for setting values

Setting value Range correction operation

0 Fixed 1 Varied

After adjusting the background peak, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 33

2. Copier-specific Adjustments

(5) Enter adjustment mode [05]. Change the values for codes [7190] to [7192] to adjust the gamma balance in

each of the low- and medium-density area.

Original mode [05] code Subcode

Recommended

value

able

value

range

Default

Text/Photo 05-7190 0/1

Text 05-7191 0/1

Photo 05-7192 0/1

Set a value smaller than

128.

0 to 255 128

* Set the value in increments of approximately 20, while checking the copy image until th e optimum value

is obtained. (Note that gradations (density level) in the medium- and high-density areas may be reversed with some setting values.)

* Since the subcode varies according to the area where the density is adjusted, refer to the table below and

set the appropriate subcode. Remember that mainly adjusting the low- or medium-density area will change the copy density of the images seen through the back of the page. Setting "2" for the subcode will allow you to adjust the high-density area. But this will not solve the problem. Therefore, never change the value for the high-density area.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area

 Precautions after the completion of the adjustment

The adjustment may possibly cause text handwritten with a pencil or light text to become illegible on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables.

2 - 34

2. Copier-specific Adjustments

2.7.2 To Adjust the Copy Image Quality in the Full Color Mode

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (3). * Only the service technician must use procedure (2).

(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.

Press the [LIGHT] button to decrease the background density .

After decreasing the background density, copy and check the copy image quality. With the background density set to the minimum, if the images seen through the back of the page are still

copied, the service technician must use the next procedure.

(2) Enter the adjustment mode [05]. Change the values for the follo wing codes below to adjust the density level

of the background.

Adjustment Original mode [05] code Recommended value

Acceptable

value range

Default

Text/Photo 05-7656

Text 05-7657

Full color / Auto color

(when judged as color)

Printed image 05-7658

Photo 05-7659

Map 05-7660

Full color

User custom 05-7661

Set a value larger than

128.

0 to 255 128

To make another adjustment of the background for Full color after the above adjustment

* Adjust the density level while checking the color balance since it may differ from that of the original after

the adjustment.

Adjustment Original mode [05] code Recommended value

Acceptable

value range

Default

Text/Photo 05-7744

Text 05-7745

Full color / Auto color

(when judged as color)

<Automatic

adjustment>

Printed image 05-7746

Photo 05-7747

Map 05-7748

Full color

<Automatic

adjustment>

User custom 05-7762

Text/Photo 05-7749

Text 05-7750

Full color / Auto color

(when judged as color)

Printed image 05-7751

Photo 05-7752

Map 05-7753

Full color

(when judged as color)

User custom 05-7763

Set a value larger than

128.

0 to 255 128

* The value for automatic offsetting adjustment for background processing will be applied, only if the

automatic copy density mode is selected. On the other hand, the value for manual offsetting adjustment for background processing will be applied, only if the manual copy density mode is selected.

2 - 35

2. Copier-specific Adjustments

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the original mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The value adjusted for the background dens ity is shared in the Full color mode with the Printed image

<Note> "Making the highlighted area more visible (or increasing the background density)" and

After adjusting the background density, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(3) Press the [BASIC] button on the Control Panel. Select "TEXT" from among the original mode options.

* To have "TEXT" selected from among the original mode options by default, refer to procedure (1) in 2.8

To Eliminate Moiré.

 Precautions after the completion of the adjustment

The adjustment may possibly cause the highlighted area to become less visible on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

2 - 36

2. Copier-specific Adjustments

2.8 To Eliminate Moiré

Before the adjustment

After the adjustment

Moiré occurs on the photo image. Moiré is eliminated and a clear copy image is

obtained.

 Explanation

When an original containing photo images or gradational images (halftones) is copied, moiré sometimes occurs on the copy. Perform adjustment regarding image processing (sharpness intensity), in order to obtain a clear copy image, while eliminating moiré.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (2). * Only the service technician must use procedure (3).

2 - 37

2. Copier-specific Adjustments

(1) Press the [BASIC] button on the Control Panel and select the original mode option, as follows:

• To copy in the Full color or the Auto color mode: Select the Printed image mode option.

• To copy in the Black mode: Select the Photo mode option.

* To have the above original mode options selected by default, use the following procedures:

To change the default original mode on the Control Panel

Use steps (a) to (d) to change default original mode.

(a) Press the [USER FUNCTIONS] button on the Control Panel to enter the "User Functions" menu. (b) Press the [USER] tab. (c) Press the [COPY] button. (d) In the "ORIGINAL MODE FOR COLOR" or "BLACK" option, press the button corresponding to

the desired original mode option.

To change the default original mode in setting mode [08]

Enter setting mode [08]. Change the value for code [9970] or [9976] to change the original mode option, which is selected by default at power-on.

• In the Black mode

Value for 08-9970 Default origi nal mode at power-on

0 Text/Photo (default) 1 Text 2 Photo 3 Image smoothing 4 User custom

• In the Full color mode

Value for 08-9976 Default origi nal mode at power-on

0 Text/Photo (default) 1 Text 2 Printed image 3 Photo 4 Map 5 User custom

* Press the [BASIC] button on the Control Panel. Select "Custom" from among the original mode options in

the Black or the Full color mode. If the [CUSTOM] button is not displayed in the original mode option, change the values for the following codes to enable the "Custom" mode option.

In the Black mode: Enter setting mode [08]. Set "1" for code [7034]. In the Full color mode: Enter setting mode [08]. Set "1" for code [7614].

After changing the default original mode option, copy and check th e copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 38

2. Copier-specific Adjustments

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SOFT] button to soften the copy image.

After softening the copy image, copy and check the copy image quality. If further image quality adjustments is necessary, go to the next step.

(3) Enter adjustment mode [05].Change the values for codes [7056] to [7058], [7249], [7795] to [7800], and

[7806] to [7809] to adjust the default value for the sharpness intensity. * Decreasing the sharpness intensity will minimize moiré.

Color mode Original mode [05] code

Recommended

value

Accepta

ble value

range

Default

Text / Photo 05-7056

Text 05-7057

Photo 05-7058

User custom 05-7249

Black

Image smoothing 05-7809

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

Text / Photo 05-7796

Text 05-7797

Printed image 05-7798

Photo 05-7799

Map 05-7800

Full color

User custom 05-7795

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

Text / Photo 05-7806

Text 05-7807

Auto color

(when judged

as black)

Photo 05-7808

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

* The smaller the value is, the weaker the sharpness intensity becomes. The larger the setting value is, the

stronger the sharpness intensity becomes.

Changing the values for these codes will change the sharpness intensity, when the "Sharpness" indicator in

the "IMAGE" menu is set to the center. Remember that 1 step of the indicator will increase or decrease the sharpness intensity by 25. If the sharpness intensity of the center value is changed, each step of the indicator will be changed accordingly. (For instance, if the center value is decreased by 25 (softer), the value of each step of the indicator will also be decreased by 25 (softer).)

However, the range of adjustment values that is valid for sharpness level change is from -100 to +100 of

the total of the setting value of the adjustment code and that of the indicator. For instance, if the setting value of the adjustment code is “103” (-25 from the default value), the limit of the steps in the soft side of the indicator is “-3”. If the step is set at “-4”, the image quality will not be changed.

2 - 39

2. Copier-specific Adjustments

<Note> "Minimizing moiré" and "Sharpening the copy image" are mutually contradictory. When the

adjustment is performed to minimize moiré, the resolution of the copy image may decrease.

 Precautions after the completion of the adjustment

Nothing in particular.

 Remarks

• Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a

loss in MFP performance, including degradation in the image quality.

Since "-25" is assigned to the center , the image quality remains the same even if the indicator is changed from "-3" to "-4".

Setting value "103":

Default:

Soft

Sharp

+50

+75

+25

-25

-2

-75

-50

-4

-100

+75

+100

+25

+50

-1

-50

-25

-3

-100

-50

Assigned adjustment value of sharpness

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2. Copier-specific Adjustments

2.9 To Copy Sharply (To enhance sharpness)

Before the adjustment

After the adjustment

The image looks light and blurred on the copy. The edges are enhanced and the copy image

becomes sharper.

 Explanation

Perform adjustment regarding image processing (sharpness intensity), in order to obtain a sharper copy image, when a light or blurred original is copied.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (2). * Only the service technician must use procedure (3).

(1) Press the [IMAGE] button on the Control Panel. Press the [ONE TOUCH ADJUSTMENT] button.

Press the [CLEAR] button.

After selecting the "Clear" option, copy and check the copy image quality. When the copy image quality with the "Clear" option selected is insufficient, cancel the "Clear" option and

use the next procedure. (The one-touch adjustment can be canceled by pressing the [ONE TOUCH ADJUSTMENT] button again.)

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SHARP] button to increase the sharpness intensity.

After increasing the sharpness intensity, copy and check the copy image quality. If further image quality adjustment is necessary, go to the next step.

2 - 41

2. Copier-specific Adjustments

(3) Enter adjustment mode [05]. Change the values for codes [7056] to [7058], [7249], [7795] to [7800] and

[7806] to [7809] to adjust the default value for the sharpness intensity. * Increasing the sharpness intensity will enhance the edges of the image.

Color mode Original mode [05] code

Recommended

value

Accepta

ble value

range

Default

Text / Photo 05-7056

Text 05-7057

Photo 05-7058

User custom 05-7249

Black

Image smoothing 05-7809

Set a value larger

than 128.

(129 to 228)

0 to 255 128

Text / Photo 05-7796

Text 05-7797

Printed image 05-7798

Photo 05-7799

Map 05-7800

Full color

User custom 05-7795

Set a value larger

than 128.

(129 to 228)

0 to 255 128

Text / Photo 05-7806

Text 05-7807

Auto color

(when judged

as black)

Photo 05-7808

Set a value larger

than 128.

(129 to 228)

0 to 255 128

* The smaller the setting value is, the weaker the sharpness intensity becomes. The larger the setting value is,

the stronger the sharpness intensity becomes.

Changing the values for these codes will change the sharpness intensity, when the "Sharpness" indicator in

However, the range of adjustment values that is valid for sharpness level change is from -100 to +100 of

<Note> "Sharpening the copy image" and "Minimizing moiré" are mutually contradictory. When an

adjustment is performed to sharpen the copy image, moiré may occur.

Since "-25" is assigned to the center , the image quality remains the same even if the indicator is changed from "-3" to "-4".

Setting value "103":

Default:

Soft

Sharp

+50

+75

+25

-25

-2

-75

-50

-4

-100

+75

+100

+25

+50

-1

-50

-25

-3

-100

-50

Assigned adjustment value of sharpness

2 - 42

2. Copier-specific Adjustments

 Precautions after the completion of the adjustment

Nothing in particular.

 Remarks

• Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a

loss in copier performance, including degradation in the image quality.

2 - 43

2. Copier-specific Adjustments

2.10 To Make Photo Edges Look Softer

Before the adjustment

After the adjustment

The edges (contours) of the image are highly visible.

The edges look soft.

 Explanation

When a photo image is copied, the contours or edges of the image sometimes become highly visible on the copy. Perform adjustment regarding image processing (sharpness intensity), in order to soften the edges of the image.

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (2). * Only the service technician must use procedures (3) to (5).

2 - 44

2. Copier-specific Adjustments

(1) Press the [BASIC] button on the Control Panel and select the original mode option, as follows:

• To copy in the Full color or the Auto color mode: Select the Printed image mode option.

• To copy in the Black mode: Select the Photo mode option.

* When copying a photo image in the Full color mode, select the Photo mode option from among the

original mode options.

* To have the above original mode options selected by default, refer to procedure (1) in 2.8 To Eliminate

Moiré.

After changing the default original mode option, copy and check th e copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(2) Press the [IMAGE] button on the Control Panel. Press the [SHARPNESS] button.

Press the [SOFT] button to soften the copy image.

After softening the copy image, copy and check the copy image quality. If further image quality adjustment is necessary, go to the next step.

(3) Enter adjustment mode [05]. Change the values for codes [7056] to [7058], [7249], [7795] to [7800] and

[7795] to [7809] to adjust the default value for the sharpness intensity. * Decreasing the sharpness intensity will minimize the edges of the image.

Color mode Original mode [05] code

Recommended

value

Accepta

ble value

range

Default

Text / Photo 05-7056

Text 05-7057

Photo 05-7058

User custom 05-7249

Black

Image smoothing 05-7809

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

Text / Photo 05-7796

Text 05-7797

Printed image 05-7798

Photo 05-7799

Map 05-7800

Full color

User custom 05-7795

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

Text / Photo 05-7806

Text 05-7807

Auto color

(when judged

as black)

Photo 05-7808

Set a value smaller

than 128.

(28 to 127)

0 to 255 128

2 - 45

2. Copier-specific Adjustments

* The smaller the setting value is, the weaker the sharpness intensity becomes. The larger the setting value is,

the stronger the sharpness intensity becomes.

Changing the values for these codes will change the sharpness intensity, when the "Sharpness" indicator in

the "IMAGE" menu is set to the center. Remember that 1 step of the indicator will increase or decrease the sharpness intensity by 25. If the sharpness intensity of the center value is changed, each step of the indicator will be changed accordingly. (For instance, if the center value is decreased by 25 (softer), the value of each step of the indicator will also be decreased by 25 (softer).)

However, the range of adjustment values that is valid for sharpness level change is from -100 to +100 of

<Note> "Minimizing the edges of the copy image" and "Sharpening the copy image" are mutually

contradictory. When the adjustment is performed to minimize the edges, the resolution of the copy image may decrease.

After decreasing the sharpness intensity, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

Since "-25" is assigned to the center , the image quality remains the same even if the indicator is changed from "-3" to "-4".

Setting value "103":

Default:

Soft

Sharp

+50

+75

+25

-25

-2

-75

-50

-4

-100

+75

+100

+25

+50

-1

-50

-25

-3

-100

-50

Assigned adjustment value of sharpness

2 - 46

2. Copier-specific Adjustments

(4) Enter adjustment mode [05]. Change the values for codes [7889 to 7892] to adjust the maximum color

density of text.

Color to adjust

[05] code Recommended value

Acceptable

value range

Default

(Yellow)

05-7889

(Magenta)

05-7890

(Cyan)

05-7891

(Black)

05-7892

Set a value larger than 5 to increase the density.

Set a value smaller than 5 to decrease the density.

0 to 10 5

* Set the value in increment of 1, while checking the copy image un til the optimum value is obtained.

After adjusting the maximum color density of the text, copy and check the copy image quality.

If further image quality adjustments are still necessary, use the next procedure.

(5) Enter adjustment mode [05]. Change the values for codes [7840] and [7841] to adjust the level of

reproducibility in the Text/Photo mode or the User custom mode.

Color mode Original mode [05] code Recommended value

able

value

range

Default

Text/Photo 05-7840

Full color

User custom 05-7841

Set a value smaller than 3. 0 to 5 0

* Set the value in increment of 1, while checking the copy image until th e optimum value is obtained.

First, set "3" for this code and check the copy image. If further image quality improvements are still necessary, set "2." If even further improvements are still necessary, set "1" for this code.

* Remember that if a value larger than "3" is set, the edges of the image are enhanced (attaching importance

to the reproducibility of text). The table below shows you the correlation between the value and image quality.

Value Advantage of image quality

Reproducibility of edges

0 Default Intermediate

Intended to improve the reproducibility of photos more than the one obtained when "2" is set.

Soft

Intended to improve the reproducibility of photos more than the one obtained when "3" is set.

↓

Equivalent to the one obtained when the default value ("0") is set.

Intermediate

Intended to improve the reproducibility of text more than the one obtained when "3" is set.

↓

Intended to improve the reproducibility of text more than the one obtained when "4" is set.

Sharp

* For the User custom mode, refer to step (1) in “2.8 To Eliminate Moiré”.

2 - 47

2. Copier-specific Adjustments

 Precautions after the completion of the adjustment

When an original containing text is copied, the adjustment may possibly cause the text to become blurred on the copy. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

2 - 48

2. Copier-specific Adjustments

2.11 To Make Solid Filled Bold Text (Logo) Highly Colored

Before the adjustment

After the adjustment

The solid filled graph is not highly colored enough.

The solid filled graph becomes highly colored

and sharper.

 Explanation

Solid filled bold text, such as a logo, is sometimes not highly colored on the copy. Change the original mode option, perform copy density adjustment and level adjustment for black headline text, in order to make the solid fill ed image more highly colored.

* This adjustment will have an effect only on copying in the Full color mode.

 Procedures

* The procedure to use varies, depending on whether to adjust the copy image quality of a black or colored logo.

Refer to the procedure corresponding to the user’s particular request.

2 - 49

2. Copier-specific Adjustments

2.11.1 To Adjust the Copy Image Quality of a Black Logo

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use steps (1) and (2). * Only the service technician can use steps (3) and (4).

<Important> Before you start this adjustment, make sure that no color misalignment exists on the logos.

If there is any, correct it before the adjustment. For how to correct the color misalignment (deviation), refer to “1.5 To Correct Out-of-Registration Colors” in this manual and also the Service Manual.

(1) Press the [BASIC] button on the Control Panel. If you want to emphasize the reproducibility of text more,

select “TEXT” as an original mode. If you want to emphasize that of photos, select “TEXT/PHOTO”. * If you want the “TEXT” or “TEXT/PHOTO” mode to be the default original mode, refer to step (1) in “2.8

To Eliminate Moiré”.

After selecting the Text mode, copy and check the copy image quality. If further image quality adjustment is necessary, go to the next step.

(2) Perform color balance adjustment to enhance black.

• Use steps (a) through (d) to perform the adjustment.

(a) Press the [IMAGE] button on the Control Panel. (b) Press the [COLOR BALANCE] button. (c) Press the [+] button to enhance the tint of [BLACK].

* Press the [DETAIL] button. The tint of the color can be adjusted according to the density area

(low-, medium- or high-densit y area).

(d) Press the [ENTER] button .

After adjusting the tint of black, copy and check the copy image quality. If further image quality adjustment is necessary even after the tint of black was set to the maximum, the

service technician must perform the next step.

2 - 50

2. Copier-specific Adjustments

(3) Enter adjustment mode [05]. Change the values for codes [7811], [7812] or [7816] to adjust the black logos.

Color mode Original mode [05] code

Recommended

value

Accepta

ble value

range

Default

Text/Photo 05-7811

Text 05-7812

Full color /

Auto color

User custom 05-7816

Set a value larger

than 4.

0 to 8 0

* Set the value in increments of approximately 1, while checking the copy image until th e optimum value is

obtained.

* For the User custom mode, refer to step (1) in “2.8 To Eliminate Moiré”.

After adjusting the level of black headline text, copy and check the cop y image quality. If further image quality adjustment is necessary, the service technician must perform the next step.

(4) Enter adjustment mode [05]. Change the values for codes [7975], [7976] or [7983] to adjust the density level

of the black logos.

Color to

adjust

Original mode [05] code Subcode

Recommend

ed value

Acceptable

value range

Default

Text/Photo 05-7975

Text 05-7976

(Black)

User custom 05-7983

0/1/2

Set a value

larger than

128.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

The adjustment may possibly cause the highly or deeply colored area, such as in a photo, to become blurred on the copy. Also, it may also cause offset failure, grained images and degradation in gradation. Therefore, carefully perform the adjustment, while checking the copy image.

2 - 51

2. Copier-specific Adjustments

2.11.2 To Adjust the Copy Image Quality of a Colored Logo

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) to (3). * Only the service technician must use procedure (4).

(1) Press the [BASIC] button on the Control Panel. Press the [ ] button to increase the copy density.

After increasing the copy density, copy and check the copy image quality. With the copy density set to the maximum, if further image quality adjustments are still necessary, use the

next procedure.

(2) Perform color balance adjustment or RGB adjustment to adjust the tint of the colors in general.

• Use steps (a) through (d) to perform the adjustment.

(a) Press the [IMAGE] button on the Control Panel. (b) Press the [COLOR BALANCE] button to adjust the color balance by changing the amount of toner (c) Press the [+] button to enhance the tint of the color or the [-] button to decrease it.

* After selecting the color balance by changing the amount of toner (C, M, Y and K), press the

[DETAIL] button. The tint of the color can be adjusted according to density area (low-, mediumor high-density area).

(d) Press the [ENTER] button .

After adjusting the tint of the colors, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(3) Press the [BASIC] button on the Control Panel. Select "TEXT" from among the original mode options.

* To have "TEXT" selected from among the original mode options by default, refer to procedure (1) in 2.8

To Eliminate Moiré.

After selecting the Text or Map mode, copy and check the copy image quality. If further image quality adjustments are still necessary, the service technician must use the next procedure.

2 - 52

2. Copier-specific Adjustments

(4) Enter adjustment mode [05]. Change the values for codes [7960], [7961], [7965], [7966], [7970], [7971],

[7975], [7976] and [7980] to [7983] to adjust the density level of each color.

Color to

adjust

Original mode [05] code Subcode

Recommended

value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

(Yellow)

User custom 05-7980 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

(Magenta)

User custom 05-7981 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

(Cyan)

User custom 05-7982 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

(Black)

User custom 05-7983 0/1/2

Set a value larger than 128.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until th e optimum value

is obtained.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

The adjustment may possibly cause a dark-colored area, such as in a photo, to become blurred on the copy. Also, it may also cause offset failure, grained images and degradation in gradation. Therefore, carefully perform the adjustment, while checking the copy image.

2 - 53

2. Copier-specific Adjustments

2.12 To Sharply Contrast the Hues of Highlighters on the Copy

Before the adjustment After the adjustment

The hues of highlighters are not accurately reproduced. The areas marked with 2 different colored highlighters are reproduced in the same hue. They are indistinguishable.

The areas marked with 2 different colored

highlighters are accurately reproduced and distinguishable on the copy.

 Explanation

When an original containing text or areas marked with highlighters is copied, their hues may sometimes not be accurately reproduced on the copy . The i nks of highlighters are special. Therefore, their hues cannot be accurately reproduced. To reproduce the hues of similar highlighters, such as yellow and green, while producing sharp contrasts on the copy, perform color adjustment (color balance adjustment or RGB adjustment) and color density adjustment.

Copy

2 - 54

2. Copier-specific Adjustments

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Both the service technician and the user can use procedures (1) and (3). * Only the service technician must use procedures (2) and (4).

(1) Press the [IMAGE] button on the Control Panel. Press the [ONE TOUCH ADJUSTMENT] button.

Press the [MARKER] button.

After selecting the "Marker" option, copy and check the copy image quality. When the copy image quality with the "Marker" option is insufficient, cancel the "Marker" option and use

the next procedure. (The one-touch adjustment can be canceled by pressing the [ONE TOUCH ADJUSTMENT] button again.)

(2) Enter adjustment mode [05]. Change the value for code [7850] to adjust the tint of colors in Marker mode.

[05] code Subcode Acceptable value range Default

05-7850 0 to 5 0 to 6 3

* Set the value in increments of approximately 1, while checking the copy image until th e optimum value is

obtained.

* The subcode varies according to the color where the adjustment is performed. Refer to the table below and

set the subcode for the color to be adjusted.

Subcode Color to adjust

0 Y (Yellow) 1 M (Magenta) 2 C (Cyan) 3 R (Red) 4 G (Green) 5 B (Blue)

* Setting a value larger than the default value moves the hue of the color selected to [+] as shown below. On

the other hand, setting a value smaller than th e default value moves it to [-]. (For instance, set 6 for R (Red). Then the tint of the red is closely matched with that of Y (Yellow). Set 0 for R (Red). Then the tint of the red will be closely matched with that of M (Magenta).

After adjusting the hue, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

2 - 55

2. Copier-specific Adjustments

(3) Perform color balance adjustment or RGB adjustment to adjust the tint of the colors in general.

* For further information regarding the adjustment procedures, refer to procedure (4) in 2.2 To Closely Match

the Color Balance of the Original.

After adjusting the tint of colors, copy and check the copy image quality. If further image quality adjustments are still necessary, the service technician must use the next procedure.

(4) Enter adjustment mode [05]. Change the values for codes [7960] to [7979] and [7980] to [7983] to adjust the

density level of each color.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

Printed image 05-7962 0/1/2

Photo 05-7963 0/1/2

Map 05-7964 0/1/2

(Yellow)

User custom 05-7980 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

Printed image 05-7967 0/1/2

Photo 05-7968 0/1/2

Map 05-7969 0/1/2

(Magenta)

User custom 05-7981 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

Printed image 05-7972 0/1/2

Photo 05-7973 0/1/2

Map 05-7974 0/1/2

(Cyan)

User custom 05-7982 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

Printed image 05-7977 0/1/2

Photo 05-7978 0/1/2

Map 05-7979 0/1/2

(Black)

User custom 05-7983 0/1/2

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

* The value for the code corresponding to the origin al mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

The adjustment may possibly vary the hues of areas (including photo images and text) other than those marked with highlighters. Therefore, carefully perform the adjustment, while checking the copy image.

 Remarks

Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality.

2 - 56

2. Copier-specific Adjustments

2.13 To Obtain a Good Color Balance on Thick Paper

Before the adjustment After the adjustment

The copy image looks light on thick paper. The copy image looks darker and sharper even

on thick paper.

 Explanation

When image looks light on paper that is different from usual paper, perform automatic calibration for each paper type to obtain the optimum image quality .

 Procedures

* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed

below. You can use one procedure in conjunction with another. But if this changes the image quality more

than required or loses the effectiveness of the adjustment, restore the settings made in the previously used

procedure to the original ones. Then use other procedures. * Only the service technician must use procedures (1), (2) and (4). * Both the service technician and the user can use procedure (3).

2 - 57

2. Copier-specific Adjustments

(1) Perform automatic calibration for each paper type to correct variations in image density.

* A privilege to perform automatic calibration is set to Administrator by default but this can be changed to

the User. For how to change the privilege, refer to the MFP Management Guide.

• Follow steps (a) through (j) to perform the automatic calibration. (a) Enter the setting mode [08]. Change the value of the code [9059] to “1” so that automatic calibration

for each paper type will be enabled.

Value for 08-9059 Display for user calibration

0 Not displayed (default)

1 Displayed (b) Press the [USER FUNCTIONS] button on the Control Panel to enter the “User Functions” menu. (c) Press the [ADMIN] tab. (d) Enter an administrator password in 6 to 10 digits. Press the [ENTER] button. (e) Press the [GENERAL] button. (f) Press the [CALIBRATION] button. (g) Press the [COPY] button. (h) Press the [CALIBRATION] button to print a test chart. (i) Place the printed test chart on the original glass. (j) Press the [START] button to start the calibration. The message “WAIT” disappears when the

calibration is finished.

* The procedure above covers both the color and black copy calibration.

After the automatic calibration, copy and check the image quality. If further image quality adjustment is necessary, go to the next step.

(2) Enter adjustment mode [05]. Change the values for codes [7913] to adjust the amount of toner used.

• The code to use varies according to the paper type. Adjust the value for [05] code corresponding to the paper type for whose image quality you would like to improve and increase the value to ob tain the copy density that the user desires.

• In the [7913] setting, the toner amount of Y, M, C and K single color is not changed, but that of the overlaid color (RGBK) is controlled.

Paper type [05] code Subcode

Recommended

value

Acceptable value range

Default

Thick 1 3 Thick 2 4 Thick 3 5

Thick 4 6 SPECIAL 1 7 SPECIAL 2 8

OHP

05-7913

128 0 to 255 128

* Set the value in increments of approximately 4, while checking the copy image until the optimum value is

obtained.

2 - 58

2. Copier-specific Adjustments

* The table below shows you the acceptable paper weight for the paper type.

Paper type Acceptable paper weight

Thick 1 106 to 163 g/m² Max. 60 lb. Cover

Thick 2 164 to 209 g/m² Max. 110 lb. Index

Thick 3 210 to 256 g/m² Max. 140 lb. Index

Thick 4 257 to 280/m² Max. 150 lb. Index

* Use the recommended OHP transparencies and special paper.

After adjusting the amount of toner used, copy and check the copy image quality. If further image quality adjustments are still necessary, the service technician must use the next procedure.

(3) Perform color balance adjustment or RGB adjustment to adjust the tint of the colors in general.

* For further information regarding the adjustment procedures, refer to procedure (4) in 2.2 To Closely

Match the Color Balance of the Original.

After adjusting the tint of colors, copy and check the copy image quality. If further image quality adjustments are still necessary, use the next procedure.

(4) Enter adj ustment mode [05]. Change the values for codes [7960] to [7979] and [7980] to [7983] to adjust the

density level of each color.

Color to

adjust

Original mode [05] code Subcode Recommended value

Acceptable

value range

Default

Text/Photo 05-7960 0/1/2

Text 05-7961 0/1/2

Printed image 05-7962 0/1/2

Photo 05-7963 0/1/2

Map 05-7964 0/1/2

(Yellow)

User custom 05-7980 0/1/2

Text/Photo 05-7965 0/1/2

Text 05-7966 0/1/2

Printed image 05-7967 0/1/2

Photo 05-7968 0/1/2

Map 05-7969 0/1/2

(Magenta)

User custom 05-7981 0/1/2

Text/Photo 05-7970 0/1/2

Text 05-7971 0/1/2

Printed image 05-7972 0/1/2

Photo 05-7973 0/1/2

Map 05-7974 0/1/2

(Cyan)

User custom 05-7982 0/1/2

Text/Photo 05-7975 0/1/2

Text 05-7976 0/1/2

Printed image 05-7977 0/1/2

Photo 05-7978 0/1/2

Map 05-7979 0/1/2

(Black)

User custom 05-7983 0/1/2

Set a value larger than 128 to increase the density.

Set a value smaller than 128 to decrease the density.

0 to 255 128

* Set the value in increments of approximately 10, while checking the copy image until the optimum value is

obtained.

2 - 59

2. Copier-specific Adjustments

* The value for the code corresponding to the origin al mode (Text/Photo, Text, or Printed image) will affect

the copy image quality in the Full color mode and the Auto color mode.

* The subcode varies according to the area where the density is adjusted. Refer to the table below and set

the subcode for the area to be adjusted.

Subcode Area where the density is adjusted

0 Low-density area 1 Medium-density area 2 High-density area

 Precautions after the completion of the adjustment

Nothing in particular.

 Remarks

• Enter a value within the recommended value range mentioned in the procedures. Otherwise, it may cause a loss in MFP performance, including degradation in the image quality and a reduction in the life of the consumables

• If the adjustment causes a toner fixing problem, decrease the values for c odes 05-7905 to 7911.

Toshiba e-Studio 2040c, e-Studio 2540c, e-Studio 3040c, e-Studio 3540c, e-Studio 4540c Imaging Manual

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