Minolta 1030, CS1030, 1031, CS1031 General

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1159SBGOOOAA

EP1030/EP1030F EPlO3l/EPiO31F

GENERAL,

ECHANICAL/

ELECTRICAL

MINOLTA

59SBGOOOBA

lQENERALl

SPECIFICATIONS PRECAUTIONS FOR INSTALLATION

PRECAUTIONS FORUSE ...................................

HANDLING OF THE CONSUMABLES SYSTEM CONFIGURATION

1159SSMOOOBA

MECHANICAL/ELECTRICAL,

CROSS-SECTIONAL VIEW .................................. M-l

COPY PROCESS

DRIVESYSTEM ............................................

OPERATIONAL SEQUENCE

PCDRUM .................................................

IMAGINGUNIT ...........................................

6-1. Imaging Unit Drive 6-2. Toner Recycling 6-3. IU

DEVELOPMENT

7-1,

7-2. Magnet Roller 7-3. Developing Bias 7-4. Doctor Blade 7-5. Magnet Roller Lower Filter

CLEANING UNIT

TONERHOPPER .........................................

9-1. Toner Replenishing 9-2. Toner Replenishing Control

lO.DRUMCHARGlNG..........................................M-2

11. IMAGE ERASE LAMP (EP1031/EP1031F ONLY)

FuseFl

ATBC

Sensor ..........................................

....................................:..... G-l

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G-6 G-7 G-8 G-9

M-2 M-4 M-5 M-8

..M-

M-10 M-11 M-11

M-12

M-13

M-15 M-16 M-17 M-17

M-18

..M-19

M-19 M-20

M-22

CONTENTS

12. OPTICAL SECTION 12-l. Exposure Lamp LA1

12-2. AE Sensor 12-3. Lamp Reflectors 12-4. Aperture Plates

12-5.

Scanner and 12-6. 4th Mirror Movement 12-7. Lens Movement

13. MAIN ERASE LAMP

14. IMAGE TRANSFER AND PAPER SEPARATION

15. PAPER TAKE-UP/FEED SECTION

15-I.Edge Guide and Trailing Edge Stop

15-2. Drawer Positioning 15-3. Paper Lifting Plate 15-4. Paper Empty Detection 15-5. Paper Separating Mechanism 15-6. Paper Take-Up Roll

15-7.

Paper Take-Up Retry Control

16. VERTICAL PAPER TRANSPORT

17. SYNCHRONIZING ROLLERS

17-l. Upper Synchronizing Roller Positioning 17-2. Paper Dust Remover 17-3. Synchronizing Roller Control

18. PAPER TRANSPORT

.........................................

...................................

............................................

.......................................

2nd/3rd

Mirror Carriage Movement

(EPI 031/EP1031

(EP1031/EP1031

.........................................

............................

....................................

.....................................

.................................

....................................

............................

.............................

................................

...................................

.......................................

F ONLY)

......................

...........................

............................

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................

...................

...........

M-24 M-25

M-26 M-27 M-27 M-28 M-30 M-31

M-32 M-33 M-34

M-35 M-36 M-36 M-37 M-38 M-39 M-40

M-41 M-42

M-43 M-43 M-44

M-45

&+

19. FUSING UNIT 19-1. Fusing Temperature Control

19-2. Fusing Rollers Pressure Mechanism

20. EXIT UNIT 20-l. Upper/Lower Separator Fingers

20-2. Paper Exit Sensor

21. MULTI BYPASS TABLE 21-I. Paper Take-Up Mechanism

21-2. Paper Separating Mechanism

22. COOLING FAN

23. OPTICAL SECTION COOLING FAN . m . . . . . . , . . . . . . . . . . . . n n . . . . M-55

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M-46 M-47

M-48 M-49 M-49

M-50 M-51 M-52

M-53 M-54

CONTENTS

24. SEMI-AUTOMATIC DOCUMENT HANDLER 24-l. Document Take-Up Mechanism

24-2. Document Separating Mechanism 24-3. Document Transport/Exit Mechanism 24-4. SDH Mode

25. MEMORY BACKUP

...........................................

.........................................

(SDH)

....................

. . . . .

....................

. . .

....................

..............

M-56 M-56

M-56 M-57 M-58

M-59

. . .

III

1151

SBGOOOCA

GENERAL

1159SBGOlOOA

SPECIFICATIONS

EPI 030/EP103OF, EPI

TYPE PHOTOCONDUCTOR COPYING SYSTEM PAPER FEEDING SYSTEM

EXPOSURE SYSTEM DEVELOPING SYSTEM CHARGING SYSTEM

IMAGE TRANSFER

SYSTEM PAPER SEPARATING SYSTEM FUSING SYSTEM PAPER CHARGE NEUTRALIZATION ORIGINAL SIZE

COPY PAPER

031/EP1031 F Specifications

Desk Top Copier with Stationary Platen Organic Photoconductor Electrostatic Dry Powdered Image Transfer to Plain Paper

2-Way

Feeding

Slit exposure New Micro-Toning System Comb Electrode DC Negative Charger with Scorotron Grid Visible Image Transfer by means of a Single-Wire DC Negative Charger Natural separation from the small-diameter PC Drum because of the inherent strength in paper, plus DC bias Roller packed with heat insulator Charge Neutralizing Brush

Inch Areas: Metric Areas: 210 x 297 mm (A4)

Universal Tray (250 sheets)

-Multi

Bypass Table (30 sheets)*

*(EPl03l/EPl03lF

8-l/2

x 14 (Legal)

only)

D

._ to

”

(width x length)

Acceptable

Plain paper (60 to 90

_-_- ---- -

Thick paper (up to 110 g/m*)

(width x length)

OHP transparencies

Postcards

Max.

Min.

x : Unacceptable

Universal Tray

(automatic take-up)

g/m2)

Inch Areas

Metric Areas 210 x 297 mm

Inch Areas

Metric Areas

X 0

8-l/2”

14”L

5-l/2”

8-ll2”L

148 x

210mm

G-l

Multi Bypass Tray

(30 sheets)

0 0 0

8-W’ x 14”L

210 x 297 mm

4’ x

53/4”

98 x 140 mm

MULTIPLE COPIES WARMING-UP TIME

Up to 99 copies (in SDH mode)

I I

FIRST COPY SPEED

CONTINUOUS COPY SPEED (copies/min.) Zoom ratio x 1.00, paper fed from Universal Tray

1-1

ZOOM RATIOS

115v 12ov 127V

220v

230V

240V

inch Areas

Metric Areas 6.5 sec. or less

<Normal

Mode>

Size

Legal L Letter L

Invoice L

13 13 13

9.9 sec.

9.1 sec.

7.5 sec.

10.9 sec.

9.9 sec.

9.1 sec.

6.4 sec. or less (8-l/2 x

Area

Metric

Inch

I I

11L)

(A4L)

cSDH

1-1

Mode>

Size

Legal L

Letter L

Invoice L

12 13 13

Area

Metric

Inch

Fixed Ratios

Variable Ratios I

cEP1030/EP1030Fr

LENS EXPOSURE LAMP FUSING

TEMPERATURE

Inch Areas1 Metric Areas

Full Size

x0.64to

xl.56

Full size (x 1 .OO) only

Through Lens (F = 7.5, f = 165 mm)

Halogen Frost Tube Lamp

200%/190c

G-2

x 1 .oo

(in

x 0.01 increments)

POWER/CURRENT CONSUMPTION (Copier only)

115V 1 12OV 1

Exposure Lamp

(Rating) Fusing Heater

(Rating) Max. power consumption 1 1040~ ( 1120~ 1 1220~

In standby Max. current consumption

290w

9.3A 9.5A 9.9A

320W

127V 1

220V 1 230V 1 240V

360W 280W 3oow

1 99ow I

4.6A

106OW

( 1

4.7A 4.8A

30~

330w

POWER REQUIREMENTS

ENVIRONMENTAL REQUIREMENTS

Temperature Humidity Ambient llluminance) 300 lux or less Inclination

Copier Dimensions (mm)

EP1031 EP1031F

EP1030

EPI

030F

*Including SDH (For a copier not equipped with an SDH, up to the

level)

COPIER WEIGHT (excluding Copy Tray, starter, toner, and copy paper) WITH SDH WITHOUT SDH ACCESSORIES

: 115 to

15 to

I 1

Width

558

Width Depth

523

529

25 kg

22 kg

127V,

60Hz

220 to

24OV,

50/60Hz

to 35C (50 to 95F) (Temperature Gradient 1

85%RH

(Humidity Gradient

or less

off

horizontal

Depth

451

456

451

456

Operators Manual, Setting-up Instructions, Exit Tray

20%RH/h

I I I

I I

or less)

---I

Height*

281 357

Height*

281

358

documenZ

OC/h

or less)

I I

surface

G-3

SDH Specifications

NAME

TYPE

INSTALLATION TYPE OF DOCUMENT DETECTABLE DOCUMENT SIZE

TRAY CAPACITY :

ALIGNMENT DOCUMENT PLACEMENT: MODE POWER REQUIREMENTS : DOCUMENTS WHICH : CANNOT BE USED

Semi-Automatic Document Handler (SDH) Take-Up = Straight take-up from the top of the stack of documents Transport = Roller transport

Ejection = Roller transport and U-turn ejection Mounted on top of copier Plain paper (50 to 110

A5Lto8-112

Document Feeding Tray

Document Exit Tray

Centrally aligned

Face down

DC24V

The following types of documents, if used in the SDH, are very likely to cause trouble.

(supplied from copier)

14

g/m2)

50 sheets 30 sheets

50 sheets

(A4,80 g/m2

or less)

or more)

or less)

TvDe

of Document

Documents stapled or clipped together

Plastic transparencies Documents glued together

Documents folded, torn, or wrinkled

Documents severely curled Coated oaber Documents misfed due to being fed askew

Take-up failure, damaged document, tive drive train due to jammed staples or clips.

Take-up failure due to static electricity

Take-up failure, damaged document

Damaged document, documents misfed due

to being fed askew

Documents misfed due to being dog-eared or

fed askew

Possible Trouble

defec-

G-4

DOCUMENTS FOR WHICH FEEDING CANNOT BE GUARANTEED

The following types of documents, if used in the SDH, may or may not cause trouble.

Type of Document

Paper to which Scotch tape has been applied Documents pasted with cut Slightly curled documents Heat-sensitive Coated documents

Translucent paper

Paper just fed out of copier Paper weighing less than 50 Damp, Paper with an extremely rough surface (letterhead, etc.) Pencil-written documents Take-up failure,

Two-fold, Z-fold documents

Documents of a nonstandard size with a

width of 139.7 mm to 216 mm

paper for fax machines

untensile paper

paper

g/m2

Take-up failure, skew Torn pasted paper Dog-eared pages, ejection failure

Crease, ejection failure Take-up failure Take-up failure, Take-up failure, transport failure

Take-up failure,

Take-up failure, transport failure

Transport failure, folded leading edge

Transport failure, distorted image.

Possible Trouble

transport failure

G-5

1159Sl3GO200A

PRECAUTIONS FOR INSTALLATION

Installation Site

To ensure safety and utmost performance of the copier, the copier should NOT be

used in a place:

Where it will be subject to extremely high or low temperature or humidity.

Which is exposed to direct sunlight.

Which is in the direct air stream of an air conditioner, heater or ventilator.

Which puts the operator in the direct stream of exhaust from the copier.

Which has poor ventilation.

Where ammonia gas might be generated.

Which does not have a stable, level floor.

Where it will be subject to sudden fluctuations in either temperature or humidity,

If a cold room is quickly heated, condensation forms inside the copier, resulting in

blank spots in the copy.

Which is near any kind of heating device.

Where it may be splashed with water.

Which is dirty or where it will receive undue vibration.

Which is near volatile flammables or curtains.

Power Source

Use an outlet with a capacity of

or more.

If any other electrical equipment is

that the capacity of the outlet is not exceeded.

Use a power source with little voltage fluctuation.

Never connect by means of a multiple socket any other appliances or machines

to the outlet being used for the copier.

Make the following checks at frequent intervals:

Is the power plug abnormally hot?

Are there any cracks or scrapes in the cord?

Has the power plug been inserted fully into the outlet?

Does something, including the copier itself, ride on the power cord?

Ensure that the copier does not ride on the power cord or communications cable

of other electrical equipment, and that it does not become wedged into or under-

neath the mechanism.

115/l

20/l

27V, 13.2A

sourced

or more, or

200/220/24OV, 8.1A

from the same power outlet, make sure

Grounding

To prevent receiving electrical shocks in the case of electrical leakage, always ground the copier.

Connect the grounding wire to:

The ground terminal of the outlet.

A grounding contact which complies with the local electrical standards.

Never

connect the grounding wire to a gas pipe, the grounding wire for a telephone,

or a water pipe.

G-6

PRECAUTIONS FOR USE

To ensure that the copier is used in an optimum condition, observe the following precautions.

Never place a heavy object on the copier or subject the copier to shocks,

Insert the power plug all the way into the outlet.

Do not attempt to remove any panel or cover which is secured while the copier is

making copies.

Do not turn OFF the Power Switch while the copier is making copies.

Provide good ventilation when making a large number of copies continuously,

Never use flammable sprays near the copier.

If the copier becomes inordinately hot or produces abnormal noise, turn it OFF and

unplug it.

Do not turn ON the Power Switch at the same time when you plug the power cord

into the outlet.

When unplugging the power cord, do not pull on the cord; hold the plug and pull

it out.

Do not bring any magnetized object near the copier.

Do not place a vase or vessel containing water on the copier.

Be sure to turn OFF the Power Switch at the end of the workday or upon power

failure.

Use care not to drop paper clips, staples, or other small pieces of metal into the

copier.

Operating Environment

The operating environmental requirements of the copier are as follows.

Temperature:

Humidity: 15% to 85% RH with a fluctuation of 10% RH per hour

10C

to 30C with a fluctuation of 10C per hour

Power Requirements

The power source voltage requirements are as follows.

AC1

15/l

20/l

Voltage Fluctuation:

Frequency Fluctuation:

10% (Copying performance assured)

-15% (Paper feeding performance assured) (AC1 27V

50/60

27l22Ol23Ol24OV

: Tyo %)

&0.3%

G-7

1159SBG0400A

HANDLING OF THE CONSUMABLES

Before using any consumables, always read the label on its container carefully.

Use the right toner. The applicable copier model name is indicated on the Toner

Bottle.

l Paper is apt to be easily damaged by dampness, To prevent absorption of

moisture, store paper, which has been removed from its wrapper but not loaded into the drawer, in a sealed plastic bag in a cool, dark place.

Keep consumables out of the reach of children.

Do not touch the PC Drum with bare hands.

Store the paper, toner, and other consumables in a place free from direct sunlight

and away from any heating apparatus.

The same sized paper is of two kinds, short grain and long grain, Short grain paper should only be fed through the copier crosswise, long grain paper should only be fed lengthwise.

If your hands become soiled with toner, wash them with soap and water

immediately.

Do not throw away any used consumables (PC Drum, starter, toner, etc.). They are

to be collected.

NOTE

Do not burn, bury in the ground, or throw into the water any consumables (PC Drum, starter, toner, etc.).

G-8

1159SBG0500A

SYSTEM CONFIGURATION

Semi-Automatic Document

Handler (SDH)*

/ *EP1030F,

EP1031 F Only

1159M040AA

1159M041AA

G-9

1151 SBMOOOCA

MECHANICAL/

ELECTRICAL

1159SBMOl

OOA

CROSS-SECTIONAL VIEW

2ii

SDH: EPI

03OF, EP1031

Document Transport Document Exit Roller Document Transport Roller

Document Registration Roller

Copier

2nd Mirror

3rd Mirror

9. IO. Lens

6th Mirror

11.

1st Mirror

12.

13.

Exposure Lamp 5th Mirror

14.

4th Mirror

15.

PC Drum

16.

Magnet Roller

17.

F only

Roller

24 23 22 21

1159M058AA

Document Feed Roll

5. Document Separator Roll

6. Document Take-Up Roll

18.

Multi Bypass Take-Up Roll Transport Roller

19.

20.

Paper Take-Up Roll

21.

Image Transfer/Paper Separator

Coronas

22.

Main Erase Lamp

Cleaning Blade

23.

Fusing Roller

24.

Exit Roller

25.

Universal Tray

26.

M-l

1159SBM0200A

COPY PROCESS

k-.f

PC DRUM

DRUM CHARGING

IMAGE ERASE

EXPOSURE

DEVELOPING

PAPER FEEDING

IMAGE TRANSFER

PC Drum

PAPER SEPARATION

CLEANING

10.

MAIN ERASE

11.

TRANSPORT

12.

FUSING

13.

PAPER EXIT

1139MOO2AA

The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor.

It is used as the medium on which a visible developed image of the origlnal is formed.

(For more details, see p. M-9.)

2. Drum Charging

The PC Drum Charge Corona Unit is equipped with a Comb Electrode and a Scorotron Grid to deposit a uniform negative charge across the entire surface of the PC Drum.

(For more details, see p. M-21

3. Image Erase

Any areas of charge which are not to be developed are neutralized by lighting up

(For more details, see p. M-22.)

LEDs.

4. Exposure

Light from the Exposure Lamp reflected off the original is guided to the surface of the PC Drum and reduces the level of the negative charges, thereby forming an electrostatic latent

image.

(For more details, see p. M-24.)

Developing

Toner positively charged in the Developer Mixing Chamber is attracted onto the electrostatic latent image changing it to a visible, developed image. A DC negative bias voltage is applied to the Sleeve/Magnet Roller to prevent toner from being attracted onto those areas of the PC Drum which correspond to the background areas of the original.

(For more details, see p. M-12.)

6. Paper Feeding

Paper is fed either automatically from the Drawer, or manually via the Multi Bypass Table or Manual Bypass Table. Each Drawer has fingers that function to separate the top sheet of paper from the rest at take-up.

(For more details, see p. M-34.)

7. Image Transfer

The single-wire Image Transfer Corona Unit applies a DC negative corona emission to the underside of the paper, thereby attracting toner onto the surface of the paper.

(For more details, see p. M-33.)

8. Paper Separation

The paper, thanks to its inherent strength, is naturally separated from the small-diameter PC Drum. This is combined with the application of a positive DC bias with a comb electrode. The two methods ensure that the paper is definitely separated from the surface of the PC Drum.

(For more details, see p. M-33.)

9. Cleaning

Residual toner on the surface of the PC Drum is scraped off by the Cleaning Blade.

(For more details, see p. M-l 8.)

10. Main Erase Lamp

The Main Erase Lamp applies a positive DC charge to neutralize any surface potential remaining on the surface of the PC Drum after cleaning.

(For more details, see p. M-32.)

11. Transport

The paper is fed to the Fusing Unit by the Guide Plate.

(For more details, see p M-45.)

12. Fusing

The developed image is permanently fused to the paper by a combination of heat and pressure applied by the Upper and Lower Fusing Rollers.

(For more details, see p. M-46.)

13.

Paper Exit

After the fusing process, the paper is fed out by the Paper Exit Roller onto the Copy Tray.

(For more details, see p. M-49.)

1159SBM0300A

DRIVE SYSTEM

Main Drive Motor Ml of this copier is used to drive the Imaging Unit, paper take-up and transport mechanisms, and Fusing Unit. Its drive is transmitted via gear trains as follows.

1159M042AA

M-4

1159SBM0400A

OPERATIONAL SEQUENCE

*Figures given in 0 in the following flowchart represent timer values in seconds,

Power Switch Sl is turned ON.

DC24V

(PUl)

t DC5V

Control panel

. Ozone Fan Motor M3 turns at full speed.

Approx. 500ms

Approx. Is

Scanner Home Position Sensor *Scanner Drive Motor M4 is energized to move it to the

home position. Lens Home Position Sensor PC1 2 *Lens Drive Motor M5 is energized to move it to the home

Fusing Unit temperature is detected at 200%.

position. Starter set sequence and ATDC automatic adjustment (After the warming-up cycle is completed) *Only when the Imaging Unit is new. Fuse is blown when the starter setup sequence is normally terminated.

*Fusing temperature control starts.

Ozone Fan Motor M3 turns at half speed.

Heat Roller

PC11

M-5

C 1 The Start Kev is pressed.

Main Drive Motor PC Drum Charge and Image Transfer Coronas (HVI)

Developing bias Paper Separator Corona (HVI)

Synchronizing Roller

D 1 Paper is taken up.

Paper Take-Up Solenoid SL2 ON

APProx.ON c Paper Transport Sensor PC2

1.1s

- APProx. ONb Scanner Drive Motor M4

473ms

OFF

(HVI)

(CLI)

- APProx. z

Scanner Home Position Sensor PC11

134ms

Image Eraser LA3

LEDs

Approx.

266ms

M-6

-@!. CL1

The Scanner completes the scan motion.

Scanner starts the return motor

The last paper moves past Paper Transport Sensor PC2.

Paper moves past Paper Exit Sensor PC3.

PC Drum Charge and Image Transfer Coronas

Paper Exit Sensor PC3

M-7

1151

J7ciwi-j

SBM0500A

k.4+

The photoconductive drum used in this copier is the organic photoconductor

(OK)

type. The drum is made up of two distinct, semiconductive materials on an alumi-

num alloy base. The outer of the two layers is called the Charge Transport Layer (CTL), while the inner layer is called the Charge Generating Layer (CGL).

The PC Drum has its grounding point inside at its rear end. When the Imaging Unit

is installed in the copier, the shaft on which the PC Drum Drive Coupling Gear is mounted contacts this grounding point.

Handling Precautions

This photoconductor exhibits greatest light fatigue after being exposed to light over

an extended period of time. It must therefore be protected from light by a clean, soft

cloth whenever the Imaging Unit has been removed from the copier. Further, use

utmost care when handling the PC Drum to prevent it from being contaminated.

PC Drum Cross-Sectional

PC Drum

113QM006AA

Gear

View

CTL

Grounding Plate

. -

1139M008AA

PC Drum Drive Coupling Gear

M-8

1159SBM0600A

IMAGING UNIT

This copier is equipped with an Imaging Unit, or

NJ,

which integrates a PC Drum, PC Drum Charge Corona, Developing Unit, Cleaning Unit, and Toner Recycling mechanism into one assembly. The Unit also includes the Upper Synchronizing Roller which facilitates clearing of a paper misfeed.

PC Drum Charge Corona

1159M043AA

1159M044AA

Coupled to

in Copier

GeaS

PC Drum

Upper Synchronizing Roller

1159M045AA

1159SBM0601A

6-1. Imaging Unit Drive

Drive for the Imaging Unit is transmitted by one of the gears on the Unit. This particular gear is in mesh with the Imaging Unit Drive Gear

Developer Mixing Screw Drive Gear

the

copier.

Coupling (in Copier)

Toner Recycling Coil Drive Gears

M-10

1159SSM0602A

6-2. Toner Recycling

The copier is provided with a toner recycling mechanism. The toner, which has been scraped off the surface of the PC Drum by the Cleaning Blade and collected in the Cleaning Unit, is conveyed by the two Toner Recycling Coils to the Toner Supply

Port and, from there, it is returned back to the Developer Mixing Chamber of the Developing Unit.

One of the gears of the Toner Recycling mechanism (1) receives drive through a gear at the rear end of the PC Drum.

The gear on Toner Recycling Coil 1 receives drive through a gear at the rear end of the PC Drum. While, the gear on Toner Recycling Coil 2 receives drive through a train of three gears mounted on the mechanism from the Developing Unit to Hopper.

Toner

Recycling Coil 2

-c\

1169SBM0603A

6-3. IU Fuse

Toner Recycling Coil

The Imaging Unit is provided with a fuse called IU Fuse Fl. When a new Imaging

Unit is installed in the copier and the Power Switch turned ON, an IU Set signal is output causing the copier to start the starter setup sequence and ATDC Sensor automatic adjustment.

When the starter setup sequence is completed normally, an IU Fuse Blow signal is output to blow

Fi.

Once Fl is blown, the IU Set signals are no longer output. This means that the starter setup sequence and ATDC Sensor automatic adjustment will not be carried out when the Power Switch is thereafter turned ON.

When Fuse is When Fuse is

not Blown Blown

WIRING DIAGRAM

2-B

Control Signal

PWB-A PJl OA-5

M-11

1159SBM0700A

DEVELOPMENT

The Developing Unit built into the Imaging Unit performs the following functions:

Mixes the toner and carrier well to ensure that a sufficient amount of toner is

positively charged.

Detects the toner-to-carrier ratio of the developer by means of the ATDC Sensor

and replenishes the supply of toner as necessary.

Detects a toner empty condition by means of the ATDC Sensor.

Ensures that a proper amount of toner is attracted to the PC Drum by means of

its Sleeve/Magnet Roller, Developing Bias, and Doctor Blade.

2nd Developer

Doctor Blade

Sleeveklagnet Roller

lst Developer

Mixing Screw

ATDC Sensor

1159M003AA

M-12

1159SBM0701 A

7-1 I ATDC Sensor

ATDC Sensor UN3 installed on the underside of the Developer Mixing Chamber detects the varying toner-to-carrier ratio of the developer which flows over it in the Chamber. The copier CPU compares the detected ratio with the ratio set by the ATDC Detection Level Mode (Tech. Rep. Choice SCH-90) to control toner replenishment.

Set

T/C (%)

ATDC Output Voltage (V)

2.65

6.0

6.5

7.0 2.15

The Toner Bottle is turned one turn (30 mg) to replenish the supply of tonerforeach Toner

Replenishing signal.

If the toner-to-carrier ratio becomes lower than 2.5%, the copier inhibits the initiation of a new copy cycle (this feature can be enabled or disabled by a Tech. Rep. Choice function). When a ratio of 2.5% or more is recovered as a result of Auxiliary Toner

Replenishing, the copier permits the initiation of a new copy cycle.

If the Front Door is swung open and closed with a T/C ratio of less than er initiates an Auxiliary Toner Replenishing sequence. (It stops the sequence as soon as a T/C ratio of 5% is reached.)

2.32

4%,

the copi-

ATDC Sensor Automatic Adjustment

An automatic adjustment of the ATDC Sensor is made in the F8 Test Mode operation and when a new Imaging Unit is installed in the copier.

*When a New Imaging Unit is Installed in the Copier:

Following the execution of the starter setup mode upon power-up, the copier CPU reads the output value of the ATDC Sensor and establishes the reading as the reference value.

*When F8 is Run after Starter Has Been Changed:

Following the execution of the starter setup mode upon pressing of the Start

Key, the copier CPU reads the output value of the ATDC Sensor and establishes the reading as the reference value.

. .

NOTE:

lfan F8 operation is run at a time when the starter has not been changed, it can result in a wrong T/C reference value being set by the copier. Avoid casual use of

If the setting value has been cleared because the RAM Board was replaced, set the value valid before the replacement for the ATDC Sensor adjustment data of the Adjust mode using the 1

F8.

Oup/lup

key,

M-13

Toner Empty Detection

The copier has no toner empty detecting sensor and, instead, the ATDC Sensor performs that function. The toner-empty condition is canceled after detection under any of the following conditions:

The set T/C ratio has been recovered.

After the Front Door has been swung open and closed.

(For details, see

9-2.

Toner Replenishing Control on

p.M-20.)

UN3

Control Signal

PWB-A

PJl

OA-2

Set T/C

4.0%

4.5%

5.0%

5.5% 2.40 2-A

6.0% 2.32

6.5%

7.0%

Standard

output

Voltage

2.65

2.57

2.48

2.32

2.15

WIRING DIAGRAM

M-14

1159SBM0702A

7-2. Magnet Roller

The Magnet Roller of the Sleeve/Magnet Roller of this copier has the following magnetic characteristics.

The Sleeve Roller, onto which developer is attracted by the magnetic fields of force set up by the poles of the Magnet Roller, turns to convey the developer toward the point of development. It also means that

developer fresh

from the Developer Mixing

Chamber is always brought to the point of development. As we noted earlier, the Imaging Unit integrates the Developing Unit with the PC

Drum into one body. Because of that, it is impossible to move the Developing Unit against the PC Drum, thereby providing a certain distance between the PC Drum and Sleeve/Magnet Roller. The Magnet Roller has therefore been made movable:

the Bushing is pressed by compression springs thereby pressing the Positioning

Collars on both ends of the Magnet Roller against the PC Drum. This ensures a given distance between the PC Drum and the Sleeve/Magnet Roller.

Magnetic Pole Positioning

PC Drum

1159M004AA

Spring

1139M017AA

M-15

1159SSM0703A

7-3. Developing Bias

A negative voltage (Vb = Developing Bias voltage) is applied to the Sleeve Roller to prevent a foggy background on the copy. The amount of toner attracted onto the surface of the PC Drum depends on how much lower the PC Drum surface potential

(Vi) is than Vb (i.e., the potential difference).

l When the potential difference is large, a greater amount of toner is attracted. l When the potential difference is small, a smaller amount of toner is attracted.

Magnet Roller

1159M005AA

Start Key

PC Drive Motor Ml

:;,n

CFF

ON 2

Developing Bias PWB-A

I I

Control Signal ON OFF WIRING DIAGRAM

PJ8A-4

Approx. 0.5

set

115iTOiMCA

12-F

M-16

1159SBM0704A

7-4. Doctor Blade

The Doctor Blade installed over the Sleeve/Magnet Roller regulates the height of the developer brush on the surface of the Sleeve Roller. The Blade is perpendicular to the direction of movement of the Magnet Roller to minimize variations in the distance between the Doctor Blade and Magnet Roller as the Magnet Roller moves.

Doctor Blade

r-6

Direction of Magnet Roller Movement

1159SBM0705A

7-5. Magnet Roller Lower Filter

There is a seal installed under the Magnet Roller to prevent insufficiently charged

from spilling onto the mechanisms inside the copier and toner particles from flying out.

Magnet Roller

1159M006AA

toner

M-17

1159M007AA

CLEANING UNIT

The Cleaning Blade is pressed tightly against the surface of the PC Drum and scrapes off any toner remaining on the surface after image transfer and paper sepa-

ration have been completed.

The Cleaning Blade is moved back and forth to prevent the PC Drum from deterio-

rating and the Cleaning Blade from warping away from the surface of the PC Drum.

There is a Toner Antispill Mylar aff ixed to the Imaging Unit. It prevents toner scraped

off the surface of the PC Drum from falling down onto the surface of the copy paper or the paper path.

In addition, a Side Seal is affixed to both ends of the Imaging Unit on both sides of

the Cleaning Blade. They prevent toner from spilling from both ends of the Cleaning

Blade.

Cleaning Blade Tension

(

Ton& Antispill Mylar

1139MOZAA

M-18

115QMOdQAA

Blade Lateral Movement Cam

1159SBM0900A

TONER HOPPER

The Toner Hopper is integrated into the Imaging Unit. To replace an empty Toner

Bottle, the user first needs to swing the Toner Bottle Holder out 20 to the front. The Holder pivots about the Toner Supply Port as it is swung out or in, which effectively

prevents toner from spilling when the Holder is swung out or in.

Toner Bottle

Toner Bottle Holder

20

Lock

1159M039AA

1159SBM0901A

9-I.

Toner Replenishing

Drive from Main Drive Motor Ml is transmitted via the Magnet Roller to the Bottle Drive Gear in the gear box. There is a holder installed on the Bottle Drive Gear, coupling the Toner Bottle to the Bottle Drive Gear. This ensures that the Bottle Drive Gear turns with the Toner Bottle. When Toner Replenishing Solenoid gized, it turns the Toner Bottle one complete turn. The spiral groove cut in the Toner Bottle effectively prevents toner from remaining in the bottle.

SLl,

fitted to the gear box, is ener-

Toner Replenishing Solenoid

(SLl)

M-19

1159M057AA

1159SBM0902A

9-2. Toner Replenishing Control

When Power is Turned ON

If the toner-to-carrier ratio (T/C) data stored in memory when power was last turned

OFF is less than -1% of the set level, the copier is set into the auxiliary toner replenishing sequence after it has completed warming up.

During a Copy Cycle

The copier detects T/C at the start of exposure for each copy cycle and, if the reading

is lower than the set level, it replenishes the supply of the amount of toner equivalent

to one complete turn of the Toner Bottle, (1 St-stage replenishing).

When the copier goes through 1 St-stag: replenishing four times, it replenishes the

supply of the amount of toner equivalent to three complete turns of the Toner Bottle

(2nd~stage

After carrying out

replenishing).

2nd~stage

replenishing five times, the copier takes a reading of the

T/C ratio, If the reading is less than -1% of the set level, the copier is set into the auxiliary toner replenishing sequence. (Auxiliary toner replenishing = Two turns of Toner bottle x max. 10 times)

If the T/C reading is less than -1% of

ing sequence, it-results in a toner-empty condition.

th;

set level after the auxiliary toner replenish-

M-20

1159SBMlOOOA

DRUM CHARGING

The PC Drum Charge Corona has a Scorotron grid to deposit a negative DC charge evenly across the surface of the PC Drum. The grid voltage (VG) applied to the grid mesh is -590V

The Corona Unit has a Comb Electrode which minimizes the amount of ozone produced. The conventional wire type corona unit produces a large amount of ozone due to corona discharge in radial directions. The comb electrode type, on the other hand, discharges only toward the Grid Mesh, meaning a reduced amount of ozone is produced.

1k20V.

<Normal

<SDH

Mode>

Start Key

Scanner Home Position Sensor

PC Drum Charge Corona

Mode>

SDH Registration Clutch

PC Drum Charge Corona

PC Drum

Charge Corona

Grid Voltage

(VG)

PWB-A

ON OFF

(PC21 p-J

ON OFF

Control Signal

PJ8A-4

Control Signal

PJ8A-3

134.lmsec.

I I

OFF

1159TOl

MCA

1159T02MCA

WIRING DIAGRAM

12-F

WIRING DIAGRAM

12-F

1159.SBM1100A

IMAGE ERASE LAMP

To prevent a black band from occurring across both the leading and trailing edges, and along the front and rear edges, of the electrostatic latent image, LEDs of Image Erase Lamp LA3 are turned ON before development takes place, thereby reducing to a minimum the unnecessary potential on the surface of the PC Drum. Because of the light path involved, this copier has this edge erasing cycle between drum charging and exposure.

L.-J

(EP1031/EP1031

Image Erase Lamp LA3

F only)

Exposure

w

M-22

Image Eraser

LEDs

are turned ON and OFF according to the zoom ratio.

LA3

PWB-A

Control Signal

PJ18A-I -

L H

OFF

WIRING DIAGRAM

2-c

1159SBM1200A

OPTICAL SECTION

As the

Scanner is moved

is reflected off the original and guided through the Six Mirrors onto the surface of the PC Drum to form the electrostatic latent image.

The image is enlarged or reduced as necessary by moving the Lens and mirrors

(EP1031/EP1031

F only).

Scanner

Motor M5, the light from Exposure Lamp LA1

2nd/3rd Mirrors

Scanner Motor

4th/5th

Mirrors

1159M053AA

M-24

1159SBM1201A

12-l. Exposure Lamp LA1

An AC halogen lamp is used as Exposure Lamp

As the exposure level is adjusted on the control panel, the delay time from the zero-cross signal of the AVR Trigger signal from PWB-A changes to increase or decrease the

LA1

voltage, thereby changing the image density.

LA1

Manual EXP Setting Lamp Voltage

Difference (V)

Scan drive

Transport Roller

Sensor PC51

Scan home

AVR Trigger Signal

(LAl)

PWB-A

9 8 7 6

-5 -3

-8

Scan

Control Signal

PJ7A-5

-1 Reference

ReturnU Scan

OFF

3 2

WIRING DIAGRAM

Return

1159TllMCA

7-B

1159SBM1202A

12-2. AE Sensor

In the Auto Exposure Mode, the AE Sensor on AE Sensor Board PWB-H measures the intensity of the light reflected off the original, which results in the black/white ratio of a 210-mm-wide area from the reference position of the original being measured, According to this measurement, the Exposure Lamp voltage is automatically increased or decreased so that copies of consistent quality are produced.

The output from the AE Sensor is applied to PWB-A which, in turn, varies the delay time from the zero-cross signal of the AVR Trigger signal from it to vary accordingly the LA1 voltage.

LA1

Voltage

Increased

Decreased

PWB-H (AE Sensor) AVR Trigger

Signal

(LAl)

Control

PWB-A PJ

PWB-A

p.l7A-5

-.. .

Siclnal

16A-2 L

ON1OFF 1WIRING

1-1

DIAGRAM

7-c

7-B

M-26

1159SBM1203A

12-3. Lamp Reflectors

The Main Reflector ensures that light from Exposure Lamp LA1 exposes all areas

of the original. The Auxiliary Reflector functions to reflect light onto the areas that LA1 cannot illuminate when an original that does not lie flat on the Original Glass (such as a book) is being used. This reduces shadows which would otherwise be

transferred to the copy.

The Main Reflector is of aluminum, while the Auxiliary Reflector is aluminum to which film has been deposited. In addition, reflectors of the same material as the

Main Reflector are installed on both ends of the frame to compensate for the reduced intensity of light around both ends of the Exposure Lamp.

. Main Reflector

Exposure Lamp LA1

1151SBM1204A

12-4.

Aperture Plates

Four Aperture Plates are moved to the front and rear to ensure even light

distribution.

Aperture Plate

lz3

1151 MOPOAA

M-27

1159SSM1205A

12-5. Scanner and

Scanner Drive Motor M4, a stepping motor, drives the Scanner Drive Cables fitted at

2nd/3rd

Mirror Carriage Movement

the front and rear of the copier to move the Scanner and Mirrors Carriage.

The speed of the Scanner varies for different zoom ratios

Scanner Home Position Sensor PC1 1 detects the Scanner at its home position. If the

(EP1031/EP1031

F only).

Scanner is not at the home position when the copier is turned ON, M4 is energized to move the Scanner to the home position.

Scann\er

Motor M5

Scanner Drive

Cable

1159M052AA

2nd/3rd

Carriage

Mirrors

M-28

The Scanner starts its scan motion when the Start key is pressed. When the copier is turned ON, it does not know where the Scanner is located and so it moves the Scanner up to the point equivalent to 6 pulses towards the paper exit end from Scanner Home Position Sensor PC1 1. If the Scanner is located beyond PC1 1 towards the exit end, the copier moves the Scanner in the scan direction (to the right of

PCII)

and, when the Scanner has moved for several pulses, the copier brings the Scanner back to the point equivalent to 6 pulses to the left of moves the Scanner at a low speed until it blocks pulses (1, 2, 4, and 5 of

PWB-IIA)

PCII.

When the Start key is pressed, the copier

PC11

. Then, phase-shifted motor drive

are applied to M4 to accelerate the Scanner. The

speed of the Scanner is changed by varying the width of the pulse applied to the motor

(EPI 031, EPI 031 F only).

PC11

Control Signal

PWB-A

PJ16A-5

Blocked Unblocked

WIRING DIAGRAM

5-D

SDH Mode When the Start key is pressed, the copier moves the Scanner up to a point equivalent to 43 pulses to the left (paper exit end) of

PC11

1159SBMi

206A

12-6.4th

Mirror Movement

(EP1031/EP1031

F only)

The 4th Mirror is moved to the right and left as the eccentric cam located on the bottom

of Lens Drive Motor M5 is turned. It is moved to vary the conjugate distance for each

zoom ratio selected for use.

Spring

Eccentric Cam

Lens Drive Motor M5

Control Signal

PWB-A

PJ16A-2

Energized Deenergized

I-l

M-30

4th/5th

Mirrors

1159M051AA

WIRING DIAGRAM

7-D

1159SBM1207A

12-7. Lens Movement

Lens Drive Motor

M5,

(EPI 031/EP1031

F only)

a stepping motor, is energized by the motor drive pulses sent from

PWB-A to move the Lens a given distance via a gear train. There is a fixed-type Lens Aperture Cover provided at the rear of the Lens (on the 4th Mirror end). It limits the amount of light striking the surface of the PC Drum.

Lens Drive Motor M5

1159M050AA

Lens

PC12

Control Signal

PWB-A

PJI 7A-2

Lens Aperture Cover

Blocked Unblocked

WIRING DIAGRAM

5-D

1159SBM1300A

Main Erase Lamp LA2 is turned ON to neutralize any surface potential remaining on the surface of the PC Drum after cleaning.

Main Erase Lamp LA2

1159M059AA

The Main Erase Lamp is not a single lamp. A total of 40 to make up LA2. The LA2 board is fitted with an acrylic cover to protect the

LEDs

are mounted on a board

LEDs

contamination.

Start Key

PC Drive Motor Ml

Main Erase Lamp LA2 oFF

LA2 1

PWB-A

OFF

ON m

Control Signal

I I

OFF

I H I L I

WIRING DIAGRAM

1151T06MCS

2-B

M-32

from

1159SBM1400A

IMAGE TRANSFER AND PAPER SEPARATION

Image Transfer

The Image Transfer Corona applies a DC negative corona emission to the underside of the paper thereby attracting the positively charged toner onto the surface of the paper. The Image Transfer Guide Plate installed before the Image Transfer Corona restricts the entry angle of the paper to the PC Drum and, at the same time, ensures a given distance of the paper from the PC Drum so that the image is properly transferred onto the paper.

Paper Separation

This copier employs a natural paper separation method which owes its paper separating efficiency to the inherent strength in the paper and the small diameter PC Drum. In addition, a charge neutralizing plate is installed that applies a noise from occurring due to static electricity discharge occurring at the time of paper separation

(-I-)

600V bias to prevent image

PC Drum

Image Transfer Guide Plate (Front)

Charge Neutralizing

Plate



Image Transfer

Corona Wire

1159MOlOAA

1159SBM1500A

PAPER TAKE-UP/FEED SECTION

The copier is equipped with a Universal Tray that is slid out to the front of the copier. It

can hold up to 250 sheets of paper.

1159M014AA

Paper Sizes That Can be Loaded

<Inch

Area>

.5-1/2x8-l/2 -

8-1/2x14

A5T - A4T

M-34

1159SBM1501A

15-l. Edge Guide and Trailing Edge Stop

The Drawer is a universal type allowing the user to slide freely the Edge Guide and

Trailing Edge Stop to accommodate paper of different sizes.

The Edge Guide and Trailing Edge Stop can be locked into position by meshing the

notches in the Lock Lever with those in the Drawer.

Trailing Edge Stop

1159M015AA

Edge Guide

M-35

1159M016AA

1159SBM1502A

15-2. Drawer Positioning

The tray is positioned by fitting the slit in its frame into the positioning plate on the paper take-up unit and pressing the side faces on both ends of the tray front cover against the flat surface of the base bracket. The tabs on both sides at the front of the tray ensure that the tray clicks into position.

Rear End

Front End

I 1

1159M019AA

1159SBM1503A

15-3. Paper Lifting Plate

When the lock lever installed on the back side of the tray on the paper take-up end moves

past the protrusion at the center of the copier rail, it unlocks the lock lever, allowing the

two springs to push up the Paper Lifting Plate.

1159M020AA

1159M023AA

M-36

1159Sl3M1504A

15-4. Paper Empty Detection

When the Drawer runs out of paper, the

into the cutout in the Paper Lifting Plate. This activates the Paper Empty Sensor and

the copier will know that the Drawer has run out of paper.

Also, there is a possibility of the Actuator activating the Sensor by flexing of a sheet

of paper as it is taken up and fed in. To prevent this false detection of a paper-empty

condition, the paper empty detection is enabled only when the Paper Take-Up Roll

is in the retracted position. (See position of the Paper Take-Up Roll.)

cControl>

Control Signal

PC1

PWB-A

PJ2A-2

Actuator

15-6.

Paper Take-Up Roll for the retracted

Blocked

for the Paper Empty Sensor drops

Unblocked

WIRING DIAGRAM

10-F

M-37

1159SBM1505A

15-5.

Paper Separating Mechanism

The tray has fingers that separate the top sheet of paper from the rest of the paper stack at paper take-up. The Fingers are fitted to the right front and rear corners of the Drawer. When the Paper Take-Up Roll starts turning to take up the top sheet of paper, its turning force is directly transmitted to the top sheet of paper as it is in direct con-

tact with the Paper Take-Up Roll. That force overcomes the block of the Fingers,

causing the top sheet of paper to ride over the Fingers and be fed out of the Drawer into the copier.

As to the second sheet of paper, the paper transport force obtained through friction with the top sheet of paper is weak and does not allow the second sheet of paper to ride over the block of the Fingers. Hence, the second sheet of paper remains

stationary with the rest of the paper stack in the Drawer.

When there are only two sheets of paper left in the Drawer, the bottom sheet can

be fed with the top one if the friction of the Paper Lifting Plate is weak. The Friction Plate affixed to the Paper Lifting Plate prevents this from happening.

Paper Take-Up Roll

Friction Plate

M-38

Paper Lifting Plate

1159SBM1506A

15-6. Paper Take-Up Roll

Since the Paper Lifting Plate is raised at all times by the Paper Lifting Springs, paper is wedged in the mechanism when the Drawer is slid out of the copier if the Paper Take-Up Roll is round in shape. So the Take-Up Roll is semicircular and the circular part of the Roll is positioned on top at times other than take-up. For convenience, we call this position of the Paper Take-Up Roll the retracted position.

The Paper Take-Up Roll is grooved to keep good friction even under heavy loading. The Paper Take-Up Roll is driven when the Paper Take-Up Solenoid (SL2) is

energized. The Roll is turned one complete turn for each single sheet of paper.

The Paper Transport Sensor (PC2) is used to detect whether a sheet of paper has been properly taken up or not.

Paper Take-Up Roll Ratchet

bll 113OMOE4AA

Paper Transport Sensor

Transport Roller

Paper Take-Up Solenoid

1151M025AA

1159MOllAA

M-39

1159SSM1507A

15-7. Paper Take-Up Retry Control

To minimize the occurrence of a paper misfeed due to a slippery Paper Take-Up Roll, the

Paper

Take-Up Solenoid is energized a second time if

sheet of paper

fails

to reach the Paper Take-Up Detecting Sensor within T1 sec. after the solenoid has been deenergized. The solenoid is energized a second time 0.36 sec. after the above-mentioned period of 0.95 sec. has elapsed. (This is referred to as the paper take-up retry function.)

A misfeed results if the sheet of paper does not reach the Paper Take-Up Detecting Sensor even after three paper take-up sequences.

T2 set

0.15sec

TI set

0.15sec

pc2

IEI

Tray

Multi

Bvoass

Table

(Set)

0.95

0.36

I 0.29 I 0.22

1159T07MCA

I I

M-40

1159SBM1600A

VERTICAL PAPER TRANSPORT

The sheet of paper taken up by the Paper Take-Up Roll from the tray is fed along the paper guide to the Transport Rollers.

The Transport Rollers receive drive from Main Drive Motor Ml, turning at all times whenever Ml remains energized.

Paper Transport Sensor PC2 located at the Transport Rollers detects a sheet of paper

taken up and fed in from the tray or Multi Bypass Table.

Paper Take-Up

Roll

Ratchet

Paper Take-Up Solenoid

Paper Transport Sensor

Transport

SL2

PC2

Ml 1 PWB-A

SL2 1 PWB-A

OFF

;

I,,.

IEl El

Control Signal

Ratchet

1151M025AA

Actuator

V,/

1.2sec

1159MOllAA

0 I

1159T04MCA

Energized 1 Deenergizecl 1WIRING DIAGRAM

PJ4A-4 1

L 1 H

PJ6A-2 1

L I H

1 1

1 O-E

PC2

Control

PWB-A

Slgnal

PJ3A-2

Blocked

M-41

Unblocked WIRING DIAGRAM

2-D

1159SBM1700A

SYNCHRONIZING ROLLERS

The Synchronizing Rollers, operating in phase with the Scanner scan motion and

paper feeding, synchronize the leading edge of the copy paper accurately with the leading edge of the toner image on the PC Drum.

The Upper Synchronizing Roller is a metal roller covered with a polyvinyl chloride tubing, while the Lower one is a rubber roller.

Lower Synchronizing Roller

Paper Transport Sensor

1151M026AA

To facilitate clearing of misfeeds, the Upper Synchronizing Roller is installed in the

Imaging Unit. It is fitted to the Guide Frame of the Imaging Unit and the

Compression Springs at the front and rear ends press the Roller downward so that

it makes contact with the Lower Synchronizing Roller. The Lower Roller is driven by the drive source a gear train transmits the rotation of the Lower Roller to the Upper Roller, thus ensuring good paper transport performance.

Lower Synchronizing Roller

1159M025AA

M-42

1159SBM170iA

17-l. Upper Synchronizing Roller Positioning

Since the Upper Synchronizing Roller is fitted to the Imaging Unit, it must be correctly positioned with reference to the Lower Synchronizing Roller when the

Upper Half of the copier is swung down into the locked position. For this purpose,

slits are cut in the lower copier frame and the Bushings of the Upper Synchronizing

Roller fit into these slits.

Lower Copier Frame

/7s

?*r

Synchronizing

shaft

1159M026AA

1159SBM1702A

17-2.

Paper Dust Remover

The Paper Dust Remover is installed so that it makes contact with the Upper Synchronizing Roller. Since the Upper Synchronizing Roller is covered with a vinyl tubing, triboelectric charging occurs as the Roller turns in contact with the Paper

Dust Remover. As paper is then fed between the Synchronizing Rollers, the charges on the tubing attract paper dust from the paper. The dust is then transferred onto the Paper Dust Remover.

Upper Synchronizing

Roller

Lower Synchronizing Roller

Paper Dust Remover

M-43

1139M071AA

1159SBM1800A

After having gone through the image transfer and paper separation processes, the paper

is then transported along the guide plate to the Fusing Unit. There is a resistor provided

between the guide plate and frame to prevent void images.

1159M027AA

Frame

1159SBM1900A

FUSING UNIT

The Upper Fusing Roller and Lower Fusing Roller together apply heat and pressure to the toner and paper to permanently fix the developed image to the paper.

Drive for the Upper Fusing Roller is transmitted from the Main Drive Motor to the Upper Fusing Roller Drive Gear. The Lower Fusing Roller is in contact with, and thus

driven by, the Upper Fusing Roller.

Fusing Thermoswitch

Lower Fusing Roller

Pressure

M-46

1159M012AA

Spring

1159SSM1901A

19-1. Fusing Temperature Control

This copier employs a roller packed with heat insulator for the Upper Fusing Roller to shorten warming-up time. Fusing Thermistor used to keep an optimum fusing temperature at all times (controlled fusing temperature: 190C).

In standby : Temperature control at

speed by the heater and the time it takes the paper to enter the Fusing

Unit. During a: Temperature is controlled at 200C for the first 2 minute after the start copy cycle of the copy cycle. If a multi-copy cycle runs over 2 minute, a

trol is provided after the

THI is located at a point 20.9 mm to the rear with reference to the paper path reference

position, thereby preventing low-temperature offset and insufficient fusing strength that could otherwise occur when small-size paper is fed through. The Upper Fusing Roller is also provided with Fusing Thermoswitch to cut off the power line to the Fusing Unit when the roller gets abnormally hot.

Warming-up Time = Within 10 sec.

200°C

190°C

170°C

160°C

THl

fitted to the Upper Fusing Roller is

170C

is provided considering the heating

2-min.

period.

TSI

190C

con-

that turns OFF

Warming-up Completed

1159M047AA

M-47

1159SBM1902A

19-2. Fusing Rollers Pressure Mechanism

Pressure Springs are installed at both ends of the Lower Fusing Roller. These springs contact the bearings mounted on both ends of the Lower Fusing Roller and exert pressure through the Lower Fusing Roller to the Upper Fusing Roller which is installed in the Fusing Unit.

The Fusing Unit is divided into an upper and a lower half, and the upper half can be swung open. The Upper Half of the copier, when locked in position, presses the upper half of the Fusing Unit down onto its lower half.

Upper Copier Frame

Upper Fusing Roller

Pressure

Lower Fusing Roller

M-48

1159SBM2000A

m.TiEiiq

The Paper Exit Roller/Rolls feed the paper, to which the developed image has been fixed, out of the Fusing Unit onto the Copy Tray. The Charge Neutralizing Brush touches the surface of the sheet of paper being fed out of the Fusing Unit to

neutralize any static charge left on it. The Upper and Lower Separator Fingers strip

the paper from the surface of the Upper/Lower Fusing Roller.

Paper Exit Roll

Charge

Separator Finger

Upper

Paper Exit Roller

1159M013AA

1159SBM2001A

20-l.

Upper/Lower Separator Fingers

The Upper Fusing Roller is provided with two Separator Fingers which are laid out as

shown below.

Paper Path Reference Position

[II

/ /

[II

Unit : mm

1159M049AA

1159SBM2002A

20-2.

Paper Exit Sensor

Paper Exit Sensor PC3 is located at the paper exit of the lower half of the copier, detecting the sheet of paper being fed out of the copier.

Paper Exit

PC3 1 PWB-A

L

Control Signal

Blocked 1 Unblocked

PJ7A-IO

L 1 H

WIRING DIAGRAM

1 1

2-F

1 I

M-50

1159SBM2100A

MULTI BYPASS TABLE

The optional Multi Bypass Table permits the user to make multiple copies (up to 30) on paper that cannot be fed automatically via any built-in paper drawer of the copier.

*EP1031,

EP103l F only

Paper Take-Up Roll

1159M029AA

M-51

1159SBM2101A

21-1. Paper Take-Up Mechanism

The semi-circular portions of the Paper Take-Up Rolls are in the upper position in the standby state so that the rolls will not hamper proper loading of paper, When the Start key is pressed, Multi Bypass Paper Take-Up Solenoid SL3 is operated to press the Paper Take-Up Rolls against the paper stack for paper take-up.

In Standby

1159M030AA

Start Key

OFF

Paper Take-up

Paper Take-up Clutch ON

Transport Roller Sensor PC51

L_/

Solenoilv

SL3 OFF

CL5 OFF

At Take-Up

1st Sheet 2nd Sheet

of Paper

Main Drive Motor M2 OFF

Approx. 0.5

1159M030AA

set

1159TOBMCA

Control Signal

SL3 1 PWB-A

Energized Deenergizecl1 WIRING DIAGRAM

PJ5A-2

t Ii 1

O-F

M-52

1159SBM2102A

21-2. Paper Separating Mechanism

The paper separating mechanism of the Multi Bypass Table uses a Paper Separator Pad

affixed to the Multi Bypass Table directly under the Take-up Rolls. It ensures that only the top sheet of paper is fed in by properly separating the second sheet of paper from the top one.

Paper Take-Up Roll

Paper Separator Pad

1159M032AA

M-53

1159SBM2200A

COOLING FAN

Ozone produced by the PC Drum Charge Corona is drawn out of the copier by Ozone

Fan Motor M3 and absorbed by the Ozone Filter. M3 is turned either at high or low speed. It turns at low speed in the standby state and

at high speed during a copy cycle to cool the inside of the copier.

Cooling Fan

PC Drum Charge Corona

Control Signal

PWB-A

PJ13A-1

Energized Deenergized

H L

WIRING DIAGRAM

1159M037AA

2-E

M-54

1159SBM2300A

Optical Section Cooling Fan Motor M2 blows outside air against the Original Glass which is heated by Exposure Lamp

LA1 .

The filter at the intake port of the fan motor prevents dust and dirt from entering the optical section of the copier.

M2 keeps on turning at all times except in the standby state (including when the Power Switch is turned ON).

Original Glass

Rear of

Copier

Outside

Air

Filter

Optical Section Cooling Fan Motor M2

1159M061AA

EP103OF, EPlO31

EP1030, EP1031

Optical Section Cooling Fan Motor M2

M-55

1159SBM2400A

1159SBM2401A

24-1. Document Take-Up Mechanism

1159SBM2402A

24-2.

SEMI-AUTOMATIC DOCUMENT HANDLER (SDH)

Up to 50 sheets of A5 lengthwise to A4 lengthwise or

(inch areas) can be loaded in the SDH.

The document take-up mechanism takes up the top sheet of a document set placed on the Document Feeding Tray and transports it up to the Registration Roller, The drive for this mechanism comes from SDH Drive Motor

Document Separating Mechanism

When two or more sheets of document are taken up bythe Document Take-Up Roll, the document separating mechanism prevents the second and subsequent sheets from being fed further into the SDH. It consists of a Feed Roll, Separator Roll, and a torque limiter.

When only one sheet is taken up, the turning torque of the Feed Roll is transmitted via the paper to the Separator Roll. However, since the stationary torque of the Separator Roll (torque limiter) is greater than the turning torque of the Feed Roll, the Separator Roll is driven by the Feed Roll to feed the paper onward.

If two sheets are taken up at once, the Separator Roll remains stationary because of the stationary torque of the torque limiter, since the friction coefficient between the top sheet and second sheet is low. This means that the second and subsequent sheets are blocked, while only the top sheet is fed in.

SDH Drive Motor Ml0

5-l/2

MlO.

8-l/2

x 14

Document Feed Roll

Document Take-Up Roll

Document Separator

1159M034AA

Control Signal

Ml0

PWB-A

PJlA-8

Energized Deenergized

M-56



WIRING DIAGRAM

Roll

9-B

1159SBM2403A

24-3. Document Transport/Exit Mechanism

The document transport mechanism transports the document, fed from the take-up section up to the Registration Roller, on to the exposure position along the guide plate.

The document exit mechanism ejects the document transported by the transport mechanism out into the Document Exit Tray.

SDH Registration Clutch

CL1 0

1159M035AA

The rollers at the transport and exit mechanisms are driven by a gear train from

SDH Drive Motor

CL10

PWB-A

MIO,

turned when Registration Clutch

Control Signal

PJl A-7

Energized

Deenergized

CL10

is energized.

WIRING DIAGRAM

11-D

M-57

1159SBM2404A

24-4. SDH Mode

When in the SDH mode, the Scanner is moved to, and fixed at, the SDH exposure position and scans the document as the document is transported above the Scanner.

Document Exit Roller

Document

Tran

Roller 2

When feeding two sheets of Documents

SDH Drive Motor

SDH Paper Take-Up

Solenoid

SDH Ragistration

Clutch (CL1 0)

SDH Paper Transport

Sensor (PC23)

SDH Original

Exit Sensor (PC24)

PC23

PC24

PWB-A

(SLl

Conlrol

(M10)

OFF

ON OFF

El El

Signal

PJlA-10

PWB-A PJI A-9

Scanner

Blocked

Start of scan

1.74s

Unblocked

L 1 H

1159M036AA

Start of scan

1159T12MCA

WIRING DIAGRAM

11-c

11-D

-1 1 SLlO 1

CL10 I PWB-APJIA-7 I L I H

Control Signal

PWB-A

PJl

A-8

PWB-APJlA-6 I L

Energized I Deenergized I WIRING DIAGRAM

L 1 H

9-B

M-58

11-c 11-D

1159Si3M2500A

MEMORY BACKUP

Counter value and Data of (EEPROM) on the Master Board PWB-A.

Teck.

Rep. Mode or User Mode are memorized into the

IC3

bd

M-59

1159SBMOOOEA

MINOLTA

1997

IWVCXTA Co.,> Ltd

Printed in Japan

Use of this manual should be strictly supervised to avoid disclosure of confidential information.

MINOLTA

CO,, LTDn

1159-7991-I

1 97074370

Printed In Japan

Minolta 1030, CS1030, 1031, CS1031 General

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

GENERAL

SPECIFICATIONS

PRECAUTIONS FOR INSTALLATION

PRECAUTIONS FOR USE

HANDLING OF THE CONSUMABLES

SYSTEM CONFIGURATION

CROSS-SECTIONAL VIEW

COPY PROCESS

DRIVE SYSTEM

OPERATIONAL SEQUENCE

PC Drum

IMAGING UNIT

DEVELOPMENT

CLEANING UNIT

TONER HOPPER

DRUM CHARGING

IMAGE ERASE LAMP

OPTICAL SECTION

IMAGE TRANSFER AND PAPER SEPARATION

PAPER TAKE-UP/FEED SECTION

VERTICAL PAPER TRANSPORT

SYNCHRONIZING ROLLERS

FUSING UNIT

MULTI BYPASS TABLE

COOLING FAN

MEMORY BACKUP