Sekonic SR-1800, SR-I800 Operating Manual

OPTICAL MARK READER

OPERATING MANUAL

S R - 1 8 0 0

SR-1800

1

Introduction

Thank you very much for purchasing our product.
Please read the operating manual before using this product, and be sure to use it properly.
After reading this operating manual, be sure to keep it in a place that you can access at any
time.

NOTICES

1. A part or all of contents of this manual may not be reproduced in any form without the
prior written permission of the publisher.

2. The contents of this manual are subject to change without notice.

3. If you have any doubt or question about the product or the contents of this manual,
please make contact with our sales division or service division.

©2009 SEKONIC Corporation All Rights Reserved.

2

SR-1800

Safety Precautions ...................................................................................................................... 4

Warranty ...................................................................................................................................... 7

Precautions for Use ....................................................................................................................8

Precautions regarding installation ..................................................................................... 8

Handling precautions .........................................................................................................8

Before Using ................................................................................................................................ 9

Before Using the Device ..................................................................................................... 9

Unpacking the Device ....................................................................................................... 10

Names and Functions of Parts ................................................................................................. 11

Main Body Unit.................................................................................................................. 11

Operation Panel ................................................................................................................ 11

Buzzer Sound .................................................................................................................... 13

Preparation for Use ................................................................................................................... 14

Attaching the Sheet Feed Tray and Stacker.................................................................... 14

Connecting the AC Adopter ............................................................................................. 15

Installing the USB Driver .................................................................................................. 15

Installing the Diagnostic Utilities ..................................................................................... 15

Connecting the Communication Cable ........................................................................... 16

Connecting to the Computer ............................................................................................ 16

Rotary and DIP Switch Settings ...................................................................................... 17

1 Accessing the Rotary and DIP Switches ..................................................................... 17

2 Rotary Switch RSW1 Settings ...................................................................................... 17

3 DIP Switch SW1 Settings .............................................................................................. 18

4 DIP Switch SW2 Settings .............................................................................................. 19

5 DIP Switch SW3 Settings .............................................................................................. 21

6 Rotary Switch RSW2 Settings ...................................................................................... 22

Inspecting Sheets .....................................................................................................................23

Handling and Storing Sheets ................................................................................................... 25

Handling sheets ................................................................................................................25

Storage of sheets .............................................................................................................. 25

Marking Instructions ................................................................................................................. 26

About Reading Sensitivity Level ..............................................................................................26

Operation ................................................................................................................................... 27

Operation Flow .................................................................................................................. 27

Turning Power On/Off ....................................................................................................... 27

1 Turning Power On .......................................................................................................... 27

2 Turning Power Off .........................................................................................................27

■

■

■

■

■

■

■

■

■

■

■

■

■

■

■

■

■

■

Table of Contents

SR-1800

3

3 Power Saving Modes ....................................................................................................28

Setting Sheets ................................................................................................................... 29

Reading Sheets ................................................................................................................. 32

When an error occurs: ...................................................................................................... 32

Checksheet Reading Test ................................................................................................32

Troubleshooting ........................................................................................................................34

Troubleshooting ................................................................................................................ 34

Error Indicator ................................................................................................................... 35

Fixing Sheet Jams............................................................................................................. 37

Cleaning ..................................................................................................................................... 39

Regular Maintenance ........................................................................................................39

Cleaning Procedures ........................................................................................................ 40

Service Schedule ...................................................................................................................... 42

Product Specifications ............................................................................................................. 43

External Dimensions Diagram .................................................................................................. 44

OMR Glossary ........................................................................................................................... 45

Appendix ...................................................................................................................................... i

Sheet creation reference ..................................................................................................... i

■

■

■

■

■

■

■

■

■

4

SR-1800

Safety Precautions

These “Safety Precautions” pages list various symbols for ensuring safe operation of this product
so as to prevent users or other people from being injured, or property from being damaged.
Read these precautions thoroughly and understand the meanings of the symbols before
proceeding to the main text of this manual.

Warning

Improper operation by neglecting these instructions may result in death or serious injury.

Caution

Improper operation by neglecting these instructions may result in personal injury or
property damage.

Neglecting these instructions may generate smoke or fire.

Neglecting these instructions may cause electric shock.

Indicates a prohibited action.

Indicates that disassembly or modification is prohibited.

Indicates that the power plug must be removed from the outlet for safe
operation.

SR-1800

5

Warning

Fire or electric shock may happen if this product continues to be used when
there is a strange smell or sound.
In such a case, immediately turn the power switch off and then remove the power
plug from the outlet. After making sure that it is no longer smoking, ask the sales
shop for repair service.
Never attempt to repair by yourself since that may be very dangerous.

•

Please do not modify or disassemble this machine. It may result in fire or electric
shock.
Please do not remove the machine´s cover (except for top cover). It may result
in electric shock. Please ask the sales representative internal inspections,
adjustments, and repairs.
Please do not modify or disassemble the included AC adapter. It may result in
fire or electric shock.

•

•

•

Strict care should be taken for the following points.
Otherwise, a fire or electric shock will be caused in some cases.

Cautions to Power Cord

· Do not pull on the cord when drawing the power plug out from the outlet.

· Do not use any power cord other than the specified one.
Cautions to AC adapter

· Do not pull on the cord when drawing the DC plug out from the device.

· Do not use any AC adapter other than the specified one.
Be sure to use the included AC adapter.
Cautions to Device

· Do not use the device with a supply voltage other than the specified one.

· Do not install device in a place that may be wet with water or oil, steam, moisture
or dust.

· Do not insert or drop any metal, foreign combustible matter, etc. into the device
from its opening.

· Do not place containers with chemicals or water, or small metal pieces on or
near the device.

•

•

•

If the device is dropped or the cover is broken, immediately turn the power
switch off and draw the power plug out from the outlet. Then, contact the sales
representative.

•

6

SR-1800

Warning

If any foreign matter should enter inside, immediately turn the power switch off
and remove the power plug from the outlet. Then, contact the sales representative
or Sekonic. If the device continues to be used with foreign matter inside, fire or
electric shock may occur.
If water or other substances penetrate the unit, immediately turn the power
switch off and remove the power plug from the outlet. Then, contact the sales
representative or Sekonic. If the device continues to be used with water or other
foreign matter inside, fire or electric shock may occur.

•

Before moving the device, be sure to remove the power plug from the outlet. If
the cable is damaged, fire or electric shock may occur.

•

Do not connect or disconnect the power plug if your hands are wet. Otherwise,
an electric shock may occur.

•

Caution

Do not place the device in an unstable location. Otherwise, it may fall or collapse,
resulting in injury.

•

When opening or closing the upper part of the main body, do not place your
hand on the sheet-feeding surface. Otherwise, fingers may be caught, resulting
in injury.
If you must touch the sheet-feeding surface of the main body, be careful not to
allow your fingers to be caught or hit.

•

•

When doing maintenance on the device, for your own safety, be sure to remove
the power plug from the outlet.
When the device is not in use for long periods, for safety, remove the power plug
from the outlet.

•

•

Do not put heavy things on the device. Otherwise, it may fall or collapse, resulting
in injury.

•

SR-1800

7

Warranty

The cost-free warranty period for this product extends for one year after delivery.
The company will repair malfunctions arising during this period free of charge if they are
determined to be the company's responsibility. In the event repairs are necessary, as a general
rule the company will keep the product temporarily to carry out such repair work.
Problems arising after the warranty period has expired, problems not covered by the warranty
even if the warranty period has not expired, problems that do not have the seal of the retailer,
malfunctions and other failures caused by customer misuse or by wear and tear of parts due to
repeated use will not be covered by the warranty.
This warranty covers only this product and included accessories, and the company does not
assume any responsibility for monetary damages, lost profits or any claims from third parties
resulting from the use of this device.

8

SR-1800

Precautions for Use

Handle the device with the following points in mind to enable full use of its functions.

Precautions regarding installation

Do not place the device in the following places. Otherwise, failures could result such as sheet
jams, reading errors, or the unit could stop operating.
(1) In direct sunlight or near a heating device.
(2) Outdoors where the main body may not perform satisfactorily due to rain or strong wind.
(3) Places where the machine may not perform satisfactorily, such as unstable or inclined

surfaces, or other locations where the machine may shake while it is operating.

(4) Places subject to sudden temperature changes, excessive moisture and dust.

Recommended temperature: 10 - 30°C (50°F - 86°F)
Guaranteed operating temperature range: 5 - 35°C (41°F - 95°F)
Humidity: 30-80% (no condensation)
Avoid environments outside the above ranges as much as possible.

Handling precautions

(1) Do not connect or disconnect the power plug or DC plug of AC adapter when the device is

in operation or the power switch is on.

(2) Do not move the device while it is operating. Also, do not touch, pull, or push the sheet.
(3) Do not put objects on the device, or sit or lean on it.
(4) Do not give the device a strong vibration and shock etc.
(5) Allow an interval of at least 5 seconds between turning the power switch on and off.
(6) Do not insert foreign objects other than the sheet.
(7) Do not apply force that deforms the sheet while it is being loaded.
(8) Since the sheet reader is equipped with an optical lens, never insert a screwdriver or other

such objects. (Otherwise, reading may be disabled.)
If sheet feeding is disabled due to dust or the like in the sheet feeder, open the top cover to
remove it. See “Cleaning” (P.39).

(9) If the roller becomes soiled with powder from sheets or pencil lead, the roller and the sheet

may slip. In order to prevent slippage, clean the roller at proper intervals. See "Cleaning"
(P.39).

(10) If the exterior of the device is soiled, lightly wipe with a soft cloth wetted with water or a

neutral detergent. Note that wiping with a cloth wetted with volatile chemicals like benzene
or paint thinner may cause deformation or discoloring.

(11) Do not place excessive load on the sheet feed tray and stacker. Doing so may result in

deformation or damage.

(12) When the machine is not used for a prolonged period of time, remove the power cord from

the outlet.

(13) When the machine is not used for a prolonged period of time, keep the hopper set in the

down position.

SR-1800

9

Before Using

Before Using the Device

Before using the device, check if all of the following items are included in the package. If parts
are missing or damaged, contact the store where you purchased the device.

Note

The package does not include a RS-232C interface cable. You are requested to purchase
one depending on your computer port or connection method in the market.
* RS-232C Specifications on OMR side: 9 pin straight cable

1. Main body unit

4. Power cord

For U.S.A

6. Quick guide

8. CD-ROM

9. USB cable

7. A4 checksheets (5 sheets)
Checksheet:

Use it for checking OMR operations.

For Europe

5. AC adapter

2. Stacker 3. Sheet feed tray1. Main body unit

4. Power cord

For U.S.A

6. Quick guide

8. CD-ROM

9. USB cable

7. A4 checksheets (5 sheets)
Checksheet:

Use it for checking OMR operations.

For Europe

5. AC adapter

2. Stacker 3. Sheet feed tray

10

SR-1800

Unpacking the Device

The following parts are fixed with tape to prevent damage in shipping
(1) The device is fixed with tapes. Remove the tapes 1. (5 places)

Also, remove the drying agent (1) and the hopper fixing material (1) from the main body

unit.
(2) Hold Part A of the top cover and open it, pull upward and remove it.
(3) Remove the tape 2 from the main body unit. (2 places)
(4) Reattach the top cover.

111

1

Part A

Top cover

2

Part A

Top cover

2

SR-1800

11

Names and Functions of Parts

Main Body Unit

Number Name Explanation

1 Operation panel Refer to “Operation Panel” below.

2 Hopper Part for loading sheet.

3 Sheet feed tray Tray for sheet supply. (removable)

4 Lock lever Adjusts width to match the sheet width.

5 Lock lever

Lock lever for the hopper. When setting sheets, push this lever to lower the hopper.
After setting sheets, push the lock lever release claw of the lock lever to unlock.
The hopper will return to the sheet supply position.

6 Top cover

Remove when cleaning the reader or rollers, and when removing the sheet after a
sheet jam has occurred.

7 Stacker Tray for discharged sheets. (removable)

Operation Panel

Number Name Explanation

8

START

switch

When pressed once, one sheet is sent through.
When pressed continuously, each sheet is sent through repeatedly.

9

READY lamp(green)

Lights up when the power is on. Indicates that the device is able to communicate
with the computer.

10

CLEAR

switch

Clears errors. When pressed, the ERROR lamp turns off.

11 ERROR lamp(red)

Lights up during the self-check after the power is turned on, and turns off when the
check is complete. Lights up or blinks when an error occurs.

1

2

3

4

6

5

7

Front

Rear

1

2

3

4

6

5

7

Front

Rear

891011 891011

12

SR-1800

Number Name Explanation

12 USB connector Port for communication via USB cable.

13

RS-232C connector

Port for communication via RS-232C.

14 DC jack DC plug (AC adapter) connection terminal.

15 Power switch Turns the device ON/OFF.

16 DIP Switch cover Cover for the DIP switch. Bend the cover to remove it.

17

DIP/Rotary switches

Switches for setting device specifications. Before using the device, the switches
must be set.
(Reference: “Rotary and DIP Switch Settings” (P.17))

12 13 14

15

16

17

Front

Rear

12 13 14

15

16

17

Front

Rear

SR-1800

13

Buzzer Sound

This device has a built-in buzzer that indicates operating conditions and errors.

Buzzer Sound Meaning Explanation

Pip!

Confirmation

When the power is on, the buzzer sounds after the self-check is completed
normally.
(Sounds at the same time the ERROR lamp turns off.)

Sounds when the

START

switch is pressed and one sheet is loaded.

Sounds when the

CLEAR

switch is pressed and the ERROR lamp turns off.

Pip! Pip! Pip! Caution

Sounds when no sheet is in the hopper and the

START

switch is

pressed.

Sounds when an abnormality occurs during the checksheet reading test.

Peep! Peep! Peep!

Error Sounds when an error occurs .

ON

OFF

50 ms

ON

OFF

ON

OFF

200 ms 50 ms

50 ms 100 ms

Pip!

Pip! Pip! Pip!

Peep! Peep! Peep !

ON

OFF

50 ms

ON

OFF

ON

OFF

200 ms 50 ms

50 ms 100 ms

Pip!

Pip! Pip! Pip!

Peep! Peep! Peep !

14

SR-1800

Preparation for Use

Prepare the device for use by following the procedure below.
Reference: For information on unpacking the device, refer to “ Unpacking the Device” (P.10).

Attaching the Sheet Feed Tray and Stacker

Attach the sheet feed tray and stacker to the main body unit as shown in the diagrams below.
(1) Attach the sheet feed tray to the side of the main body unit where the sheet is fed.

Insert the hooks (2) of the sheet feed tray into the corresponding holes on the main body
unit.

(2) Attach the stacker to the side of the main body unit where the sheet is discharged.

Hook the hooks (2) of the stacker into the corresponding holes on the main body unit.

Sheet feed traySheet feed tray

StackerStacker

SR-1800

15

Connecting the AC Adopter

Attach the AC adapter (included) to the device.

Be sure to use the included AC adapter, otherwise a fire may result.•

WARNING

(1) Insert the DC plug of the AC adapter into the main body unit's DC jack
(2) Connect the power cord to the AC adapter and the outlet.

Installing the USB Driver

Install the driver on the included CD-ROM.

· For details on how to install the driver, refer to ¥Driver¥Install.txt in the CD-ROM.

Installing the Diagnostic Utilities

Install the diagnostic utilities on the included CD-ROM.

· For details on how to install and use the diagnostic utilities, refer to ¥Diagonistic Utility

¥setup.exe in the CD-ROM.

AC adapter

Power cord

DC p lug

AC adapter

Power cord

DC p lug

16

SR-1800

Connecting the Communication Cable

Connect the USB cable (included) or RS-232C interface cable.
(1) Connect the USB cable to the USB connector.

If the RS-232C port is used, connect the RS-232C interface cable to the RS-232C
connector.

CAUTION

· Only either port (USB or RS-232C) can be used.

· An RS-232C interface cable is not provided with the product. Find one that matches your
computer.

· If the RS-232C port is used, the rotary switch and DIP switch must be set properly.
(Reference:“ Rotary and DIP Switch Settings” (P.17))

Connecting to the Computer

This device is equipped with USB and RS-232C interfaces. If the OMR is newly installed, it
is recommended that you connect to USB interface in order for the device to obtain the best
performance. In such a case, use the USB driver on the included CD-ROM.
When this device is replaced with an OMR SR-600 series device, this device can simply be used
by using the RS-232C interface. *1
If RS-232C is used, make sure the communications settings for the device and the computer
are the same. Set the computer's communications settings after referring to the computer or
software user's manual.
*1: Depending on the environment/system used, it may not function properly.

Configure the device's communications settings via the following:

· Switch the USB and RS-232C interfaces

Adjust settings using the DIP switch (SW3-1 and -2). (Reference: “5 DIP Switch SW3

Settings” (P.21))

* For details on the SR-1800 mode commands, refer to the “OMR Command Reference

Manual” and “API Reference Manual for Windows” on the included CD-ROM.

* For details on the SR-600 mode commands, refer to the SR-600 Series Operation

Manual.

USB cable

(RS-232C interfac e cable)

USB cable

(RS-232C interfac e cable)

SR-1800

17

Rotary and DIP Switch Settings

The device is shipped from the factory with default settings. Configure the number of lines to
read and device function settings according to its intended use.
If the RS-232C port is used, configure the communication speed and data format settings.

1

Accessing the Rotary and DIP Switches

(1) Remove the stacker from the main body unit.
(2) Bend and remove the DIP switch cover on the bottom left of the stacker side.
(Reattach it after set up is complete.)

2

Rotary Switch RSW1 Settings

Set the communication speed of the RS-232C port.

CAUTION

· Be careful when configuring settings. Communication errors will occur if settings are
incorrect.

· Make sure the power is off when configuring settings.

: Indicates the factory settings.

SW No. Baud rate [bps]

0 9,600

1 19,200

2 38,400

3 57,600

4 115,200

5 to 9 (Not used)

RSW1 SW1 SW2 SW3 RSW2

DIP switch cover

RSW1 SW1 SW2 SW3 RSW2

DIP switch cover

18

SR-1800

3

DIP Switch SW1 Settings

Configure RS-232C port communication format and other settings.

CAUTION

· Be careful when configuring settings. Communication errors will occur if settings are
incorrect.

· Make sure the power is off when configuring settings.

· DIP switch 1-6 (SW1-6) is the back side reader setting, unrelated to the RS-232C settings.
It is set to ON for double-sided specification. Meanwhile, it is set to OFF for single-sided
specification.

: Indicates the factory settings.

No. Contents of setting ON/OFF Explanation

1 Character bit length

ON 8

OFF 7

2 Parity

ON Absent (Non )

OFF Present (Valid)

3 Parity

ON Odd

OFF Even.

4 Stop bit length

ON 1

OFF 2

5

Code acceptance status

ON All codes are accepted.

OFF (See Note. 1)

6 Back side reading

ON For double-sided specification

OFF For single-sided specification

7 Flow control

ON Enabled

OFF Disabled

8 Flow control

ON RS/CS

OFF Xon-Xoff

Note 1: According to the setting of “Code Acceptance Status,” it is possible to ignore the

ASCII codes below when processing commands and data received by the device.
Depending on the computers that are connected and programs used, it may be
necessary to configure this setting.

Codes ignored: 20H, 0AH, 7FH, 1AH

NO.

OFF

ON

NO.

OFF

ON

SR-1800

19

4

DIP Switch SW2 Settings

CAUTION

· Be careful when configuring settings. Marks will be misread if the settings are incorrect.

· Make sure the power is off when configuring settings.

: Indicates the factory settings.

Contents of setting SW2

No. of lines Timing type

1 2 3 4 5 6 7 8

12 lines

Control type ON ON ON OFF

Direct-under type OFF OFF OFF ON

Mark-to-mark type OFF OFF ON ON

24 lines

Control type OFF OFF ON OFF

Direct-under type ON OFF ON OFF

Mark-to-mark type ON ON OFF OFF

32 lines

Control type OFF ON OFF OFF

Direct-under type ON ON OFF ON

Mark-to-mark type OFF ON OFF ON

38 lines

Control type OFF ON ON ON

Direct-under type ON ON ON ON

40 lines

Control type OFF OFF OFF OFF

Mark-to-mark type ON OFF OFF OFF

Direct-under type ON OFF OFF ON

48 lines Direct-under type ON OFF ON ON

Automatic sheet discharge

ON ON

OFF OFF

Sheet empty detection

ON ON

OFF OFF

Timing mark error detection

ON ON

OFF OFF

(Not used)

- ON

- OFF

SW2-1 to 4: Select the number of lines to read and the timing mark type according

to the sheet used. Mark-to-mark type is set for “Without top-end margin
reading.”(Reference: “OMR Glossary” (P.45) - Timing control type, Direct under
type, Mark to mark type)

Priority is given to the settings from the computer side.

NO.

OFF

ON

NO.

OFF

ON

20

SR-1800

SW2-5: Select automatic sheet discharge. When it is ON (factory setting) and an error

related to automatic sheet discharge (see below) occurs, the sheet will be
discharged automatically.

(This function becomes effective when the setting for SW3-3 Sheet Hold is ON.

The factory setting is OFF.)

List of Errors for Automatic Discharge:

Error Automatic discharge

Sheet empty ×

Timing mark error

○

Double feed error

○

Edge skew error

○

Mark skew error

○

Sheet jam or sheet remaining ×

Other error

○

   ○:Automatic discharge on ×:Automatic discharge off

SW2-6: Select sheet empty detection. When it is ON and a “sheet read command” is

received, it will detect the absence of sheet if there is no sheet in the hopper.
The factory default setting is OFF (absence of sheet will not be detected). The
factory setting is OFF (absence of sheet will not be detected).

SW2-7: If there are three or less timing marks on the sheet that was read, a timing mark

error will be detected (detection is made as the factory setting is ON).

SR-1800

21

5

DIP Switch SW3 Settings

CAUTION

· Be careful when configuring settings. Malfunction will occur if the settings are incorrect.

· Make sure the power is off when configuring settings.

: Indicates the factory settings.

Contents of setting SW3

Operation mode

1 2 3 4

SR1800 Mode (USB connection mode) OFF OFF
(Not used) ON OFF
SR600 Mode (RS-232C connection mode) ON ON

Sheet hold

ON ON

OFF OFF

Edge skew detection

ON ON

OFF OFF

SW3-1 to 2: Preset to “SR1800 Mode (USB connection mode).” If an existing SR-600 model

is replaced with this device and the RS-232C interface is used, set this switch
to “SR600MODE (RS-232C connection mode).”

SW3-3: Select whether or not to hold the read sheet. When it is ON, the read sheet will

be stopped at the sheet discharge part. The factory setting is OFF so that the
read sheet will be discharged to the stacker.

SW3-4: Select whether or not to detect edge skew. The factory setting is ON so that if

the sheet is skewed above a certain value, there will be an error, and the sheet
will stop being read.

If it is set to OFF, there will be no error even if the sheet is skewed, and the sheet

will be read.

Edge skew detection:
The edge skew detection is the function to detect whether a sheet was fed straight.
Therefore, a skew error may be detected for the following sheets when the SW3-4 is turned
ON.

· Sheet with perforations

· Curled or folded sheet

Example:

NO.

OFF

ON

NO.

OFF

ON

PerforationPerforation

22

SR-1800

6

Rotary Switch RSW2 Settings

CAUTION

· Be careful when configuring settings. Malfunction will occur if settings are incorrect.

· Make sure the power is off when configuring settings.

Set the paper weight to match the sheet to be used. This setting is used for double feed
detection.
Reference: ”Reading Sheets” (P.32)

: Indicates the factory settings.

SW No. Paper weight Paper weight

0 Double feeding detection disabled -

1 72kg (84g /m2) OCR paper (0.11mm)

2 90kg (105g/m2) OCR paper (0.13mm)

3 110kg (128g/m2) OCR paper (0.15mm)

4 135kg (157g/m2) OCR paper (0.18mm)

5 to 9 Not used -

Double Feeding:

The device’s automatic sheet supply has a detection function to inform of an error when
double feeding has occurred.
The double feeding detection function uses a transmission-type sensor to determine whether
double feeding has occurred by the difference in the amount of transmitted light due to the
thickness of the sheet.
Set the double feed detection according to the thickness of the sheet being used.
Settings are configured using the rotary switch RSW2, with a factory setting of 90kg (RSW2-

2).

CAUTION

Depending on the paper quality and printing, the device may detect a double feed error
when only one sheet passes through. In such a case, try increasing the setting value by one
level.
eg: If double feed error occurs with RSW2 set at “2” (90kg), select “3” (110kg).

SR-1800

23

Inspecting Sheets

Inspect sheets according to the following procedure to make sure there are no problems.

(1) Checking for dirty or damaged sheets

Check that the sheets are free from any dirt, rumples, folds, folding lines, turn-over, tears
or bending. Do not make the device read sheets in which tears were mended with adhesive
cellophane tape, etc.
If the above operation is forced, it will lead to a reading error, sheet jam, no feed or double
feed.
Example:

(2) Removing foreign materials

Check that the sheets are free from any foreign materials such as rubber eraser refuse,
paperclips, adhesive cellophane tape, staples, rubber bands and correction liquid.
If the device is forced to read sheets with such foreign materials, it will lead to a reading error
or sheet jam. Also, it may result in damage to the feeder lens.

Tear

Warp

Adhesive
cellophane tape

Turn-over

Fold

Fold

Rumple Turn-over Folding line

Bend

Tear

Warp

Adhesive
cellophane tape

Turn-over

Fold

Fold

Rumple Turn-over Folding line

Bend

Dirt

Adhesive
cellophane tape

Staple

Dirt

Adhesive
cellophane tape

Staple

24

SR-1800

(3) Correcting curled or deformed sheets

Fix curled sheets or formed sheets if they are found.
If the device is forced to read curled or deformed sheets, it will tend to cause a reading error,
sheet jam, no feed, double feed, or skewed feed.

(4) Correcting folded sheets

Flatten 2- or 4-folded sheets before using them since it may cause a reading error. Make a
sheet check when using them.

Straight, good sheets

Upward curled sheets Downward curled sheets

Straight, good sheets

Upward curled sheets Downward curled sheets

SR-1800

25

Handling and Storing Sheets

Sheets are affected by their handling and ambient conditions (especially temperature and
humidity) and their characteristics may change, resulting in a reading error.

CAUTION:

Handle and store sheets with extreme care.

Handling sheets

(1) Do not fold or blemish sheets, as a reading error may occur.
(2) Keep sheets free from foreign materials such as oil and dust.
(3) Do not use dirty sheets or those with torn edges since they will affect reading or cause a

sheet jam.

(4) If the temperature or humidity suddenly changes, keep sheets in the new conditions for

about an hour, allowing them to adjust to the new conditions.

(5) Do not expose sheets to direct sunlight for a long period of time.

Storage of sheets

(1) Avoid storing sheets in a place where ambient conditions can suddenly change.
(2) Store sheets in a cabinet, etc. to protect them from humidity.
(3) Avoid storing sheets near windows or other locations where they may become dusty.
(4) Store sheets on a flat surface so that they do not bend.

26

SR-1800

Marking Instructions

Marks readable by this device are as follows.
(1) Mark size: 0.5 × 3mm or more (recommended mark)
(2) Readable writing instruments: pencils (black, HB or darker), [Option: ballpoint pens (black or

blue)]

(3) Readable marks: Filled-in spaces, ●

CAUTION

●must have a filled-in area of at least 0.5mm × 3mm (recommended mark size)

(4) Readable mark darkness: PCS 0.6 or darker

Readable mark darkness can be adjusted.
You can check mark darkness using a diagnostic utility included in the package, so check
the darkness of the marks you want to read and adjust the reading setting on the computer
side.
REFERENCE: ”About Reading Sensitivity Level” (P.26)

CAUTION

When using a pencil or mechanical pencil, make sure to mark with adequate darkness.

About Reading Sensitivity Level

When this device is operating in the SR-600 mode, it is possible to set the reading sensitivity level
with a command from a computer.
The reading sensitivity level ranges from 1 through 16, with Level 1 having the maximum reading
sensitivity and Level 16 having the minimum reading sensitivity.
The table below compares the reading sensitivity levels of this SR-1800 device with the
conventional SR-600 device.

Comparison Table of SR-1800 and SR-600 Reading Sensitivity Level Approximate Values:

SR-1800

Sensitivity Level

SR-600

Sensitivity Level

SR-1800

Sensitivity Level

SR-600

Sensitivity Level

SR-1800

Sensitivity Level

SR-600

Sensitivity Level

1 1 7 5 to 6 12 10 to 11

2 1 to 2 8 6 to 7 133 10 to 11

3 2 to 3 9 7 to 8 14 11 to 12

4 3 to 4 10 8 to 9 15 12 to 13

5 4 to 5 11 9 to 10 16 13 to 14

6 5 to 6

*1: The above sensitivity levels are the approximate values for marks filled in using SEKONIC

Corporation measurement methods.
*2: Both devices have different reading methods, so there are differences in levels depending on the mark.
*3: If SW3-1 and -2 are set to “SR600MODE” and used in the compatible mode, sensitivity levels

must be checked by the user.

SR-1800

27

Operation

Operation Flow

Turning Power On/Off

1

Turning Power On

(1) Turn the power switch to ON position.

Power is turned on and the self-check begins. Then the READY lamp (green) and ERROR
lamp (red) light up.
When the self-check is completed normally, the buzzer sounds “Pip!” and the ERROR
lamp turns off. Only the READY lamp turns on, indicating that the device is able to
communicate with the computer.

2

Turning Power Off

(1) Turn the power switch to OFF position.

Power on

Set sheets

Reading sheets

Power off

Reading Checksheets

Reference: “Checksheet Reading Test” (P.32)

If necessary, read the checksheet and make sure there are no
errors. (After the test, make sure to turn the power off.)

Power on

Set sheets

Reading sheets

Power off

Reading Checksheets

Reference: “Checksheet Reading Test” (P.32)

If necessary, read the checksheet and make sure there are no
errors. (After the test, make sure to turn the power off.)

Power Switch

ON OFF

Power Switch

ON OFF

28

SR-1800

3

Power Saving Modes

After turning the power on, if the device is not operated for a certain period of time, the device

will automatically enter power saving mode and power consumption will be minimized. The

following are two types of power saving modes:

Power saving sleep mode

If device is not operated for 5 minutes, it will enter power saving sleep
mode, and the READY lamp will blink repeatedly at fast intervals. Power
consumption will be reduced.

Power saving standby mode

After entering the power saving sleep mode, if the device is not operated for
another 5 minutes, it will enter power saving standby mode.
The READY lamp will blink repeatedly at slow intervals and power consumption
will be minimized.

Deactivating Sleep/Standby Modes:

The sleep/standby modes will be deactivated when the following occur:

· Operation is performed using the operating panel.

· Operating command is received from the computer.

· Top cover is open.

· Sheet is set in the hopper.

Cases When Device Cannot Enter Sleep/Standby Mode:

· There is an error.

0.2 sec.

0.8 sec.

0.2 sec.

1.8 sec.

Power Saving Sleep Mode (Fast blinking)

READY lamp

READY lamp

Power Saving Standby Mode (Slow blinking)

0.2 sec.

0.8 sec.

0.2 sec.

1.8 sec.

Power Saving Sleep Mode (Fast blinking)

READY lamp

READY lamp

Power Saving Standby Mode (Slow blinking)

SR-1800

29

Setting Sheets

(1) Push the lock lever down.

When the hopper is lowered to the position where the sheets are set, there will be a clicking

sound and it will lock.
(2) Set sheets straight so that their timing marks are on the left side viewing from the sheet feed

direction.

CAUTION

If the front edge and side edge of the sheets are not aligned, it will result in a sheet feeding

error or skewed sheets.
(3) Slide the sheet guide so that there is no space between it and the sheets.

CAUTION

· When there is space between the sheets and the sheet guide, it may result in a skewed
sheets.

· Refer to “Sheet Setting Example” (P.31) and check that the sheets are set properly.

(4) Push the lock lever release claw on the inside of the lock lever in the direction of the

arrow(toward the operation panel side) to unlock the hopper.
The hopper will move upward and return to the sheet feeding position.

Lock lever release claw

Lock lever

Sheet guide

Lock lever release claw

Lock lever

Sheet guide

30

SR-1800

CAUTION

· Be careful not to bend, fold, or damage the sheets. Doing so may result in a sheet feeding
error or reading error.

· Make sure to loosen the sheets before using them. Double feeding may occur if they are
stuck to each other due to static electricity, burr, etc.

Adding sheets:

When adding sheets, lower the hopper and make sure to reset the sheets. Not doing so may
result in a feeding error.

Maximum Hopper Capacity:

50 sheets, paper weight 90kg (weight by area: 105g/m2).

CAUTION

Overloading sheets onto the hopper may result in sheet feeding and reading errors.

Sheet Size:

This device can use the sheet between 110mm and 335.6mm (4.3 inches to 14 inches) long,
and between 63.5mm and 228.6mm (2.5 inches to 9 inches) wide.
The length of the sheet must be at least 1.3 times the width.
The paper quality must be “OCR Paper” and the paper weight must be 72 to 135kg (83.8 to
157 g/m2).

CAUTION

Do not use sheet other than those with the specified size, quality, and weight.

SR-1800

31

[Good example]

[Good example]

Sheet Setting Example：

Sheet Guide

[Bad examples]

[Bad examples]

A gap exists either on the right or left side although the sheets are aligned.

The sheets are not aligned although no gap exists.

Gap

Bent

Gap

[Good example]

[Good example]

Sheet Setting Example：

Sheet Guide

[Bad examples]

[Bad examples]

A gap exists either on the right or left side although the sheets are aligned.

The sheets are not aligned although no gap exists.

Gap

Bent

Gap

32

SR-1800

Reading Sheets

This section explains the procedure for reading sheets.
(If you perform the checksheet reading test, please refer to “Checksheet Reading Test” (P.32))

(1) Turn the power switch on.

The power turns on and the self-check begins. The READY lamp (green) and the ERROR
lamp (red) both light up. When the self-check is completed normally, the buzzer sounds
“Pip!” and the ERROR lamp turns off.

(2) Set the sheets in the hopper.

Align the sheets so that the timing mark is on the left side viewing from the feed direction.

(3) Press the

START

switch, or send a command from the computer to read the sheet.
One sheet will be fed to device.
If the

START

switch is held down, the sheet will be fed continuously to the device.
If you want to obtain mark data of the sheet that was fed, send the “Get Mark Density”
command. (Reference: For details on commands, please refer to the “Command Reference
Manual.”)

(4) When finished, turn the power off.

When an error occurs:

The buzzer sounds and the ERROR lamp (red) turns on or blinks. (Reference: “Troubleshooting”
(P.34))
When the

CLEAR

switch is pressed, the ERROR lamp turns off.

Checksheet Reading Test

The included checksheets (with printed data marks) can be used to test the device’s reading
function.

CAUTION

Perform this test before starting work and when a reading error occurs.
(1) Turn the power on while pressing the

CLEAR

and

START

switches on the operating panel.

Check that the READY lamp is blinking fast.

0.2 sec.0.2 sec.

READY lamp

0.2 sec.0.2 sec.

READY lamp

SR-1800

33

(2) Set the checksheet in the hopper.

Set the checksheet so that the timing marks are on the left side in the feeding direction.
Set the checksheet so that the corner cut is in the upper right as shown below.

CAUTION

· Refer to “Setting Sheets” (P29) and set the sheets correctly.

· Be careful not to bend, fold, or damage checksheet. Doing so may result in a sheet feeding

error or reading error.

(3) Press the

START

switch.

CAUTION

Once the

START

switch is pressed, reading operation will not stop even if there is a reading
error or skew error, and checksheets will be fed continuously until there are no checksheets
left.

(4) Confirm that there are no errors.

Error Status ERROR Lamp (Red) Buzzer Sound READY Lamp (Green)

No reading error - - Blinking

Reading error - “Pip! Pip! Pip! ” Blinking

Skew error Blinking “Peep! Peep! Peep !” Blinking

Skew Detection:

Skew detection is for checking whether or not the sheet has been fed straight. The detection
becomes effective when the check DIP Switch SW3-4 is set to ON (factory setting is ON).
(Reference: ”5 DIP Switch SW3 Settings” (P.21))

(5) Turn the power off to exit the checksheet reading mode.

CAUTION

Make sure to turn the power off briefly right before regular sheet reading.

Corner cut

Checksheet

Corner cut

Checksheet

34

SR-1800

Troubleshooting

Before assuming that the device is broken, check the following. If you are still unable to solve the
problem, please contact the store where you purchased the device.

Troubleshooting

Error Status Cause Action

Power does not turn on.

AC adapter and power cord are not
properly connected.

Connect them properly.
Reference: ”Connect the AC Adapter”
(P.15)

ERROR lamp (red) turns on. Refer to “Error Indicator” ( P.35).

Unable to read.

The reading sensor pitch and the mark
pitch of the sheet do not match.

Use a matching sheet.
Reference: Appendix “Sheet Creation
Reference” (P.i)

The timing mark format and the read
timing setting do not match.

Match the number of lines to read and
timing mark format with the sheet being
used.
Reference: ”4 DIP Switch SW2 Settings”
(P.19)

The sheet guide is not properly set. Set the sheet guide properly.

If there is a large gap between the sheet
guide and the sheet, the sheet will not be
sent through correctly, and some parts
will go unread.
Reference: ”Setting Sheets” (P.29)

The sheet is set in the wrong direction
(left/right, front/back, etc.).

Set the sheet in the right direction.
Reference: ”Setting Sheets” (P.29)

The sheet is curled. Fix the curled sheet before using it.

Reference: ”Inspecting Sheets” (P.23)

There is a reading error. Use the included checksheet to perform

a reading test.
Reference: ”Checksheet Reading Test”
(P.32)

Double feeding occurs.

The sheet is thicker than the double feed
setting value.

Change the paper weight using the
Rotary Switch RSW3.
Reference: ”Double feeding” (P.22)

The computer program does
not work properly.

The USB cable or R232C interface cable
is disconnected.

Connect it correctly.
Reference:
”Connect the Communication Cable”
(P.16)

The RS-232C communication settings
are not correct.

Set the communication speed and data
format correctly.
Reference: ”2 Rotary Switch RSW1
Settings” (P.18) and “3 DIP Switch SW1
Settings” (P.18)

SR-1800

35

Error Indicator

When an error occurs, the ERROR lamp (red) blinks on and the buzzer sounds.
(If the error is hardware-related, the ERROR lamp turns on.)
In SR-1800 mode, the computer can obtain the following error status information from the device
by sending the command.
In SR-600 mode, the following status information system will differ. Refer to the SR-600 Operating
Manual.

Error Status Error Cause Action

Status

Information

ERROR lamp:
(Red) Blinking
Buzzer Sound:
“Peep! Peep! Peep !”

Cover open The top cover is open Close the top cover securely. G1

Sheet empty

There are no sheets in the
hopper.

Insert sheets. Q1

Double feed error

2 or more sheets were fed at a
time.

Reset the sheets after loosing
them.

Q2

Sheet skew The sheet that was fed is

skewed.

Check the position of the
sheet guide, and set the sheet
correctly. Reference: “Setting
Sheets” (P.29)

Q3

Sheet jam Error due to a sheet jam. Remove the jammed sheet.

Reference: “Fixing Sheet
Jams” (P.37)

H1 / H2 /
H3/H4

Remaining
sheet error

There is a sheet left inside the
device.

T 1 / T 2 /
T3

Removal error

After the sheet was fed, it was
pulled out.

Reset the sheet. R1

Timing error The number of timing marks

read was 3 or less.

The number of timing marks is
3 or less, or the timing marks
cannot be detected. Check the
sheet’s timing marks.

R4

Read setting
errors

When reading under the control­type setting, the next timing mark
was detected within the range set
for reading.

Check that the reading format
settings and the sheet content
are set correctly.

R5

When dirt or sheet folds are
detected in the timing mark area.

Clean and fix the sheet folds,
then reset the sheet.

Black level
error

There is white dirt stuck to the
reading unit.

Check the reading unit and
wipe off any dirt.

S2

There is a gap between the
sheet guide and sheet.

Check the position of the
sheet guide, and set the sheet
correctly. Reference: ”Setting
Sheets” (P.29)

Command error,
parameter error,
protocol error

The sent command, sent
parameter, or transmission
timing is incorrect.

Check whether or not the sent
command, sent parameter, or
transmission timing is correct.
Check that the USB cable is
properly connected.

F 5 / F6 /
F7

Back side
reader unit not
connected

The setting is for using the
back side reader unit, but the
rear side reader unit is not
connected. (Device of single­sided specification)

Turn the back side reader
setting to OFF. Reference:
"3 DIP Switch SW1 Settings”
(P.18)

P1

36

SR-1800

Error Status Error Cause Action

Status

Information

ERROR lamp
(Red)
Lights up.
Buzzer Sound:
“Peep! Peep! Peep !”

Hardware
error

Internal error Turn off the power briefly,

then turn the power back
on. Check whether or not
the same error occurs. If the
same error occurs, request for
maintenance service.

A1 / A 2 /
A4/A5/
A6
B1 / B 2 /
B 3 /B 4 /
B 5 / B 6 /
B7

SR-1800

37

Fixing Sheet Jams

When a sheet jam occurs, fix it according to the following procedure.

(1) Hold Part A of the top cover and open it, pull upward and remove it.

(2) Remove the sheet that is jammed in the sheet feed section.

If necessary, lift up the reading sensor unit to remove the sheet that is jammed.

CAUTION

You can lift the reading sensor unit approximately 15mm. Slowly move it vertically up and
down, and be careful not to hit the unit against other parts.

(3) After the sheet is removed, make sure that there are no remaining bits of torn sheet left in the

sheet feed section.

CAUTION

If bits of torn sheet remain in the sheet feed section, it may cause another sheet jam. Make
sure to remove all of them.

Part A

Top cover

Reading sensor unit Sheet feed roller

Part A

Top cover

Reading sensor unit Sheet feed roller

38

SR-1800

(4) Reattach the top cover.

Close the top cover securely. Otherwise, it may cause poor sheet feeding.

(5) If the ERROR lamp (red) is on, check (3) and (4) again.
(6) The following are possible causes of the sheet jam.

Check each item and take the necessary action if there is a problem.

Cause Action

Sheet deformation, ripped sheet, foreign object
stuck to sheet

Inspect the sheet.
(Reference: ”Inspecting Sheets” (P.23)

Dirty sheet feed roller, transfer roller

Clean the roller.
(Reference: ”Cleaning Procedures” (P.40)

SR-1800

39

Cleaning

Make sure to turn the power off and remove the power plug from the outlet before
cleaning. Failure to do so may result in electric shock.

WARNING

External parts are made of plastic. Do not use benzene, paint thinner, or any other
volatile substances and chemical solvents. Doing so may result in discoloring or
deformation.

Caution

Regular Maintenance

When the rollers and reading sensors become dirty, various types of malfunction problems may
occur. Maintain the device regularly as discussed below. Maintenance frequency will depend on
usage (frequency of use, quality of sheet used, etc.) When you become aware of dirt or other
foreign objects, clean them off.

(1) Cleaning the device and its external parts

Wet a soft cloth with thinned neutral detergent, squeeze it hard and clean the device lightly
with it. At this time, prepare a dry cloth as well and wipe the device so as not to leave
moisture on it.

(2) Cleaning the rollers

· Clean the rollers according to the frequency of use and the stained conditions since stains

on them may be transferred to sheets and may cause a malfunction when sheets are fed
(once every a few days).

· Clean the rollers, in particular, after a large number of sheets or sheets fitted with copy

carbon are fed.

· Use antiseptic alcohol (ethanol) to clean the rollers.

· Use a soft cloth slightly wetted with antiseptic alcohol (ethanol) to lightly wipe off stains.

(3) Cleaning the Read Sensor

Since the read sensor is covered with optical lens, clean it with a soft cloth or cleaning paper
wetted with a small amount of antiseptic alcohol (ethanol) so as not to damage the glass.

CAUTION:

Handle the sensor with extreme care since the reading level will be degraded and a reading
error may occur if it is flawed.

(4) Maintaining the sheet feed path

Wipe off dirt such as bits of torn sheet with a soft cloth or cleaning paper wetted with a small
amount of antiseptic alcohol (ethanol).

40

SR-1800

Cleaning Procedures

(1) Make sure the power is off and the power plug is removed from the outlet.
(2) Hold Part A of the top cover and open it, pull upward and remove it.

(3) Clean the necessary parts.

[Roller Parts to Clean]

Roller parts

Sheet feed roller (1)
Sheet feed drive roller (1, top cover)
Transfer roller (4)
Transfer drive roller (4)

Part A

Top cover

Part A

Top cover

Transfer drive roller (4)

Transfer roller (4) Sheet feed roller

Sheet feed drive roller

Transfer drive roller (4)

Transfer roller (4) Sheet feed roller

Sheet feed drive roller

SR-1800

41

[Part of Reading Sensor Area to Clean]

Reading sensor area

Lift the reading sensor unit and clean the surface of the lens on the bottom of the
reading sensor unit. For the device of double-sided reading specification, clean the
surface of the lens on the main body side.

CAUTION

You can lift the reading sensor unit approximately 15mm. Slowly move it vertically up and
down, and be careful not to hit the unit against other parts.

(4) Reattach the top cover.

Reading sensor unitReading sensor unit

42

SR-1800

Service Schedule

For stable operation of this device, regular replacement of components is required.
See the following table, and contact us, or the store where you purchased the device, when
requiring component replacement.

Component name Number Replacement reference Remarks

Sheet feed roller 1 3 years or 150,000 sheets

Separator pad(located under
the sheet feed roller)

1 3 years or 150,000 sheets

Replace at the same time
as the sheet feed roller

CAUTION

· The above number of years and sheets should be considered as a guide.

· Depending on the device’s usage and environment, the number of years and sheets may
differ.

· For details on when to replace parts, contact the store where you purchased the device.

· Check the number of sheets read using the diagnostic utilities.

For details on how to install the diagnostic utilities, refer to “Installing the Diagnostic Utilities”

(P.15).

SR-1800

43

Product Specifications

Sensor Reading Single-sided, double-sided

Darkness level 16 levels (including no mark)
Light source color Near-infrared light (940nm) [visible red light

(660nm)]*
Pitch (inches) 1/6”
Marking Standard: pencil [Visible red light: ball point

pen (black, blue)]*
Reading marks

Size: 0.5 x 3mm or larger (recommended mark)

Darkness: PCS value of 0.6 or higher

Error detection function

Sheet position detection, double-feeding detection, skew detection

PC interface USB (Ver2.0)

RS-232C 9,600 to 115,200bps

Operation Indicator lamps 2

Operating switches 2

Hopper capacity 50 sheets (paper weight 90kg base)
Sheet used Sheet size IBM card size, postcard size, A5, B5, A4, (Width

8.5 inches, 9 inches)

Height: 110 to 355.6mm (4.3 to 14 inches)

Width: 63.5 to 228.6mm (2.5 to 9 inches)
Paper weight 72 to 135kg (84g/m2 to 157g/m2)
Paper quality OCR paper, high quality paper, recycled OCR

paper (recycled OCR paper composition 70%

or less)

Sheet feeding Feeding speed 400mm/s

1800 sheets/hour (USB connection)

Sheet discharge Stacker capacity 100 sheets (when 90kg base paper weight is

used)

Power source AC100 to 240V, 50Hz/60Hz
Environmental operating conditions

Temperature 5 to 35°C (41°F to 95°F)
Humidity 30 to 80%RH (no condensation)

External dimensions 390(W) x 127.5(H) x 328(D) mm (15.4(W) x 5(H) x 12.9(D) inches) (not

including sheet feed tray and stacker)
731(W) x 127.5(H) x 328(D) mm (28.8(W) x 5(H) x 12.9(D) inches)

Weight

4.9kg (10.8 lbs), for single-sided specification (not including AC adapter)

Noise 60dB(A) (when operating)

* “[ ]” denotes an option.

44

SR-1800

External Dimensions Diagram

731mm(28.8 inches)

127.5mm

(5 inches)

328mm(12.9 inches)

390 mm(15.4 inches)

731mm(28.8 inches)

127.5mm

(5 inches)

328mm(12.9 inches)

390 mm(15.4 inches)

SR-1800

45

OMR Glossary

Column and Row

Mark frames are in columns, timing marks are in rows.

Jam

A sheet jam error caused by media when the sheet is being fed.
There are two kinds of jams: static jams detected when the device is at rest, and operational jams
detected while the device is running.
Operational jams include double-feeding jams and no-feeding jams.

Skew

Refers to the sheet that is slanted against the sheet feeding standard.
This function detects whether or not the sheet is fed straight.
Perforated sheet, sheet unevenly cut, and curled or bent sheet is likely cause skew errors.

Stacker

This refers to the place that sheets that have been read are temporarily stacked. Stacker volume
refers to the number of sheets that can be accommodated. Example: stacker volume 200
sheets.

1st

column

2nd

column

3rd

column

4th

column

5th

column

1st row

2nd row

3rd row

4th row

......

Timing mark

Mark frame

......

1st

column

2nd

column

3rd

column

4th

column

5th

column

1st row

2nd row

3rd row

4th row

......

Timing mark

Mark frame

......

46

SR-1800

Timing control type

If the sheet has pre-printed timing marks, the scanning area (reading area) of targeted mark
frames will be determined by such timing marks.
Timing control type is a method to determine the reading zone based on the timing mark width.
Other methods include direct under type and mark to mark type.
Example: Timing control type to scan three times the timing mark width.
Set multiple numbers using the software controlling OMR.

Sensor (for reading) Reading sensor/position sensor

Sensors are photoelectrical elements that transform reflected light. Sometimes sensing refers to
both light emission and light reception.
LED wavelength influences dropout color. We use mainly two wavelengths, and the relationships
between wavelength, dropout colors, and readable colors are shown in the table below.

Wavelength Color Dropout color Readable color

940nm Infra red

Colors other than readable
colors

Black and blue pigments

660nm Visible light (red) Red, orange, pink Black, blue

...

...

...

...

Reading area
N times the width of
a timing mark

Reading area
N times the width of
a timing mark

• Top-end timing control type:

Reads n times the width of a timing mark

from the beginning of the timing mark.

• Bottom-end timing control type:

Reads n times the width of a timing mark

from the end of the timing mark.

...

...

...

...

...

...

...

Reading area
N times the width of
a timing mark

Reading area
N times the width of
a timing mark

• Top-end timing control type:

Reads n times the width of a timing mark

from the beginning of the timing mark.

• Bottom-end timing control type:

Reads n times the width of a timing mark

from the end of the timing mark.

...

...

...

SR-1800

47

Direct under type

If the sheet has pre-printed timing marks, the scanning area (reading area) of targeted mark
frames will be determined by such timing marks.
Direct under type refers to a method of reading a zone that is the same as the timing mark
width.
Other methods include timing control type and mark to mark type.

Transmission interface

The hardware connecting a computer and the OMR, in other words the mediating connection.
The SR-1800 uses USB or RS-232C interfaces.

Dropout color

Refers to colors pre-printed or written on documents that people can see but that don’t appear
when read with an image scanner or other devices.
There are “warm colors” and “cold colors” by appearance. Warm colors called orange end, red
end, etc. are used as OCR dropout colors, and you need to switch filters in this device for bluish
dropout color sheets such as the standard forms used by the Japan Chain Stores Association.
Bluish colored lines drop out when they are scanned with copy machines and other devices
even if they don’t use dropout color ink. OCR sheet for fax machines uses “cold color (blue­green)” dropout colors, but there are only a few colors that can be used with most fax machines,
because they are different from OCR units.
(1) Dropout color print darkness is controlled by the PCS value. There are two ways to measure

PCS, black backing and white backing, and you should pay attention because they differ
depending on the model.

(2) OCR sheets are generally used for printing character boxes using dropout color inks and

printing letters in clear areas.

(3) Recently, some models have become available that are capable of reading black character

boxes, but dropout color printing sheets are often superior in both recognition performance
and processing speed.

(4) Dropout colors are chosen by spectral characteristics and PCS values that are determined

by scanner sensor, light source, and filter.

Timing mark

Mark frame

Reading area

d

d

Timing mark

Mark frame

Reading area

d

d

48

SR-1800

(5) Colors that can be used as dropout colors differ depending on the model, but with some

models, even regular ballpoint pen ink drops out and cannot be used. In such cases, you need
special OCR ballpoint pens that are rarely available today. See table below for relationships
between wavelengths and colors.

Peak sensitivity wavelength Color Remarks

740(nm)

Sepia
Magenta
Purple
Brown

Abundant dropout colors
Some ballpoint pens cannot be used.

Bluish tones
Greenish tones

660

Rose
Pink
Red
Orange

For red end colors only, rose aniline, purplish red, deep red
Regular ballpoint pens can be used.

570 Yellow

As in fax scanners, it’s difficult
to see with human eyes→should be avoided.
Regular ballpoint pens can be used.

530

Blue

Regular ballpoint pens can be used for blue-end colors
only. Green

Green

a) It is important to control the PCS value to print dropout colors. (You need to choose a

printer equipped with devices that can measure PCS values.)

b) If you want to use an abundance of colors, we recommend printing in ink other than

dropout colors as a “black frame sheet.”

No feed

Refers to the sheet doesn’t get fed during sheet feeding operations.
If such an error occurs, the device assesses it as a sheet feeding error, and notifies user of the
error.

PCS (printed contrast signal)

Refers to the reflectance ratio (contrast) of printed marks, symbols, and letters as opposed to
reflectance of non-printed areas. The calculation formula is as follows.

When reflectance of areas with no printing is 70%, and reflectance of printed marks, symbols,
and letters is 10%, the PCS will be 0.857.

PCS =

White reflectance - black reflectance

White reflectance

PCS =

White reflectance - black reflectance

White reflectance

SR-1800

49

Writing implements

Readable marks and unreadable marks depend on the writing instruments used. This can also
differ according to the light source that the reading sensor uses.
Relationships between sensors used for OMR (light source) and writing implements

Light source
wavelength

Color tone

Readable mark colors
and writing implement

Unreadable mark colors
and writing implement

940nm
(standard)

Infra red

Color: black (pigment)
Writing implement: pencil

Color: other than black
Writing implement: other than pencil

660nm
(*Option)

Visible light
(red)

Color: black, brown, blue, green, purple
Writing implement: pencil, fountain pen,
water/oil base ballpoint pen, water/oil
base marker

Color: red, orange, yellow
Writing implement: items in above
colors

Hopper

Place where readable sheets are set.

50

SR-1800

Mark to mark type

If the sheet has pre-printed timing marks, the scanning area (reading area) of targeted marks
frames will be determined by such timing marks.
Mark to mark type is a method to read zones between two timing marks. Therefore, the number
of timing marks in mark to mark type forms is always an even number. Other methods include
timing control type and direct under type.

Double-feeding

Refers to two or more sheets being fed at the same time during sheet feeding operation. If such
an error occurs, the device assesses it as a sheet feeding error, and notifies users of the error.

Form

(1) OCR paper (optical character recognition paper)

Paper for data processing to optically read letters and symbols. It should not be dusty, and
it should be smooth, stiff, abrasion resistant, and antistatic.
JIS X 9004 (printing specifications for optical character recognition)

(2) Quality paper

Paper made from pure chemical pulp. Used for printing and writing.
JIS P 3101 (printing paper) JIS P 3201 (writing paper)

(3) Paper weight

Paper is categorized by weight.

Reading zone
Between timing marks

Reading zone (first row)
Top margin

Reading zone
(second and subsequent rows)
Between timing marks

• Mark to mark type
(without top-end margin reading):

The reading zone is the area between

timing marks.

• Mark to mark type
(with top-end margin reading):

The reading zones are the front margin of

the form as the first row, and between

timing marks as the second and

subsequent rows.

2.5mm

Reading zone
Between timing marks

Reading zone (first row)
Top margin

Reading zone
(second and subsequent rows)
Between timing marks

• Mark to mark type
(without top-end margin reading):

The reading zone is the area between

timing marks.

• Mark to mark type
(with top-end margin reading):

The reading zones are the front margin of

the form as the first row, and between

timing marks as the second and

subsequent rows.

2.5mm

SR-1800

i

Appendix

Sheet creation reference

You can use a sheet that you make yourself with this device in addition to the optional sheets that
we offer. If you make your own sheet, follow the specifications below.

(1) Sheet size

Height 110-335.6mm(4.3-14 inches), Width 63.5-228.6mm(2.5-9 inches)
However, Feed Length (L) must be Width (W) × 1.3.
Do not cut or round the corners on the reference side (timing mark side). (See P.iv)

(2) Weight and thickness

g/m2 (grams per sheet) 84 - 157

mm (thickness) 0.1 - 0.19

(3) Paper quality

OCR paper, quality paper, or recycled OCR paper.

(4) Printing ink (printing surrounding mark fields)

When the wavelength of the OMR reading sensor light source is 940nm, use spectrum band
B900 to measure the PCS and use ink at PCS 0.15 or less. Print timing marks in ink at PCS

0.85 or higher.
When the wavelength of the OMR reading sensor light source is 660nm, use spectrum band
B680 to measures the PCS and use ink at PCS 0.15 or lower. Print timing marks in ink at PCS

0.85 or higher.

(5) Printing position accuracy

Parallelism Adjust printing parallelism for timing marks and data marks 0.2mm or

less based on the cutting edge of the timing mark side.

Perpendicularity Adjust printing perpendicularity for timing marks and data marks 0.2mm

or less based on the cutting edge of the timing mark side.

Other Adjust to ±0.2mm or less of specified measurements unless otherwise

specified.

(6) Prohibited printing zones

Do not print between timing marks, or between the top-end (bottom-end) timing mark and
the top edge (bottom edge) of the mark sheet.
Top-end margin*: 9mm or more from the top edge to the first timing mark.
Bottom-end margin: 9mm or more from the last timing mark to the bottom edge.
Side margin: 4mm or more on the opposite side of the sheet’s standard

edge.

(7) Direction of paper grain

Feed a sheet in the direction of its grain to eliminate curling.

Feeding direction

Paper grain direction

Feeding direction

Paper grain direction

ii

SR-1800

(8) Clear zones

Do not print in colors other than dropout colors 0.8mm around reading zones and 0.8mm
from timing mark longitudinal ends.
Reading zone:
The vertical direction of the data mark standard position is the height set by command, and
the horizontal width refers to the area of the data mark frame width.
Dropout colors:
Dropout colors refers to colors that are already printed or written on a document that can be
seen by human eyes but cannot be recognized by a reading sensor.

(9) Black ink printing

Descriptions, etc. can be printed in areas except print prohibition zones and clear zones.

However, never print anything at PCS 0.15 or more other than timing marks in timing mark
columns from the top edge of sheet to the bottom edge on either side of the sheet.

(10) Printing on back surface

You can print on the back surface except in print prohibition zones. However, do not print
at PCS exceeding 0.15 in clear zones on the front surface in case of bleeding through from
the back.

(11) ID mark

Set an ID mark for identification as necessary.
Size: 1.0mm or longer x 3mm or longer.
Reading darkness: PCS 0.8 or higher
Angle: ±5 degree or less (against the line perpendicular to the standard side)

(12) Mark frame (Reading mark size)

Rectangles, ovals, and circle shapes have been conventionally used for mark frames.
Frame size should be smaller than the reading zone in various reading methods (direct under
type, timing control type and mark to mark type).
Recommended sizes are as follows.
Rectangles: Vertical 0.5-1.5mm Horizontal 3-3.5mm
Ovals: Vertical 1.5-2.5mm Horizontal 3-4.3mm
Circles: O 3.0-3.5mm
*Maximum horizontal length differs depending on sensor pitch.
Adjust horizontal length = (sensor pitch - 0.7mm) or less.
*Printing color: print at PCS 0.15 or less in dropout color.

0.8

0.83.50.8

0.8

Reading zone specified
by command

Timing mark

Reading zone Clear zone [Unit: mm]

0.8

0.83.50.8

0.8

Reading zone specified
by command

Timing mark

Reading zone Clear zone [Unit: mm]

3mm or longer

1.0mm

or longer

3mm or longer

1.0mm

or longer

SR-1800

iii

(13) Sheet dimensions

[Direct under type sheet]

Size W x L (mm)

Maximum number of columns

Maximum number of rows

1/6

IBM* 82.55 x 187.3 16 40

Postcard 100 x 148 20 31

1/6 A5 148 x 210 31 46

a 3.81 B5 182 x 257 39 57

b 6.99 A4 210 x 297 46 66

c 1.27 8.5" 216 x 279 47 62

d 11.43 9" 228.6 x 355.6 48 80

Note 1) Timing mark width: maximum width of c is 12mm.
Note 2) Maximum number of rows indicates the number of timing marks.
Note 3) Printing specifications for IBM card size are described on the
next page.

Mark frame

Sheet vertical length (L 1. 3xW)

0.3

A

0.3

A

0.2

0.2

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

1.5 or more

9 or more

4.23
minimum

General tolerance ±0.2

[Unit: mm]

A

0.1

0.2

A

Mark frame

Sheet vertical length (L 1. 3xW)

0.3

A

0.3

A

0.2

0.2

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

1.5 or more

9 or more

4.23
minimum

General tolerance ±0.2

[Unit: mm]

A

0.1

0.2

A

iv

SR-1800

[Direct under type card (1/6” IBM card size)]

* Cut corners and round corners
They help you to easily check if the sheet is placed in the right direction, and help you to

manage the sheet and keep it orderly.
Cut sheet corners straight or rounded according to the specifications shown below.
Straight cut corners: standard 6mm or less.
Chamfer angle 45°

Round corners: R 6mm

Standard size 187.32

0.2

A

0.2

A

0.2

A

82.55

0.8

6 or more

Minimum 1

5 or more

3.8±0.1

Standard size

General tolerance ±0.2

[Unit: mm]

A

4.23 x 15=63.45

Minimum 1.21

3.5-4.3

4.23

11.43

Cut corner (*)

0.2

A

0.1

Standard size 187.32

0.2

A

0.2

A

0.2

A

82.55

0.8

6 or more

Minimum 1

5 or more

3.8±0.1

Standard size

General tolerance ±0.2

[Unit: mm]

A

4.23 x 15=63.45

Minimum 1.21

3.5-4.3

4.23

11.43

Cut corner (*)

0.2

A

0.1

6mm

45

6mm

6mm

45

6mm

(6mm)

R 6mm

(6mm)

(6mm)

R 6mm

(6mm)

SR-1800

v

[Timing control type sheet]]

Size W x L (mm)

Maximum number of columns

Maximum number of rows

1/6

IBM* 82.55 x 187.3 16 40

Postcard 100 x 148 20 31

1/6 A5 148 x 210 31 46

a 3.81 B5 182 x 257 39 57

b 6.99 A4 210 x 297 46 66

c 0.89 8.5" 216 x 279 47 62

d 11.43 9" 228.6 x 355.6 48 80

Note 1) Timing mark width: maximum width of c is 12mm.
Note 2) Maximum number of rows indicates the number of timing marks.
Note 3) Set magnification values in order for the gap to be possible 1.4 mm or more from

the top-end of next timing mark.

Mark frame

Sheet vertical length (L 1. 3 x W)

0.3

A

0.3

A

0.2

0.2

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

Example when

3 times is

specified

C x 1.5

9 or more

4.23
minimum

General tolerance ±0.2

[Unit: mm]

A

0.1

Reading zone

Mark frame

Sheet vertical length (L 1. 3 x W)

0.3

A

0.3

A

0.2

0.2

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

Example when

3 times is

specified

C x 1.5

9 or more

4.23
minimum

General tolerance ±0.2

[Unit: mm]

A

0.1

Reading zone

vi

SR-1800

[Mark to mark type sheet]

Size W x L (mm)

Maximum number of columns

Maximum number of rows

1/6

IBM* 82.55 x 187.3 16 40

Postcard 100 x 148 20 31

1/6 A5 148 x 210 31 46

a 3.81 B5 182 x 257 39 57

b 6.99 A4 210 x 297 46 66

c 1.0 8.5" 216 x 279 47 62

d 11.43 9" 228.6 x 355.6 48 80

Note 1) Timing mark width: maximum width of c is 12mm.
Note 2) Maximum number of rows indicates the number of timing marks.
Note 3) Printing specifications for IBM card size are described on the next page.

Mark frame

Sheet vertical length (L 1. 3xW)

0.3

A

0.3

A

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

9 or more

4. 23
minimum

General tolerance ±0.2

[Unit: mm]

A

Sheet-feeding pitch E

E/2

2.5

Should be in the center

between timing marks

Reading zone

of second row

Reading zone

of first row

Reading zone

of last row

Mark frame

Sheet vertical length (L 1. 3xW)

0.3

A

0.3

A

0.3

A

4 or more

Sheet horizontal length (W)

Pitch (P) x (row-1)

Do not aggregate tolerances

P

d

b

a

4.23
minimum

Timing mark

9 or more

c

9 or more

4. 23
minimum

General tolerance ±0.2

[Unit: mm]

A

Sheet-feeding pitch E

E/2

2.5

Should be in the center

between timing marks

Reading zone

of second row

Reading zone

of first row

Reading zone

of last row

SR-1800

vii

[Mark to mark type card (1/6” IBM card size)]

Standard size 187.32

0.2

A

0.2

A

0.2

A

82.55

0.8

9 or more

Minimum 1

9 or more

3.8±0.1

Standard size

General tolerance ±0.2

[Unit: mm]

4.23 x 15=63.45

Minimum 1.5

3.5-4.3

4.23

11.43

Should be in the center

between timing marks

Reading zone of

second row

Reading zone

of first row

2.5

Standard size 187.32

0.2

A

0.2

A

0.2

A

82.55

0.8

9 or more

Minimum 1

9 or more

3.8±0.1

Standard size

General tolerance ±0.2

[Unit: mm]

4.23 x 15=63.45

Minimum 1.5

3.5-4.3

4.23

11.43

Should be in the center

between timing marks

Reading zone of

second row

Reading zone

of first row

2.5

CG0097120

7-24-14, Oizumi Gakuen-cho, Nerima-ku, Tokyo 178-8686, Japan
Telephone : [phone] Fac sim ile: [phone]