SHARP SF-1014 Diagram

SERVICE MANUAL

CODE: 00ZSF1014SM1E

Copier

MODEL SF-1014

CONTENTS

[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

[ 3 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . 3-1

[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

[ 5 ] GENERAL DESCRIPTIONS OF EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . 5-1

[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

[10] SERVICE AT MEMORY TROUBLE AND

[10] MAIN CONTROL PWB REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10- 1

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

CONTENTS

[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . 1-1

1. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. Target users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

3. System outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . 2-1

1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. Details of each section . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3. Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[ 3 ] EXTERNAL VIEW AND INTERNAL

STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1. External view and internal structure . . . . . . . . . . . . . . . 3-1

2. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3. Cross section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

4. Switches, sensors, detectors . . . . . . . . . . . . . . . . . . . . 3-4

5. Clutches, solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

6. Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

7. PWBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . 4-1

1. Packing drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

(1) Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

(2) Space around the machine . . . . . . . . . . . . . . . . . . . 4-2

(3) Installing table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

(4) Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

(5) Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

3. Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

(1) Optical system unlocking . . . . . . . . . . . . . . . . . . . . . 4-3

(2) Cassette setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

(3) Developer setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

(4) Toner supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

(5) Toner density sensor level check . . . . . . . . . . . . . . 4-5

(6) Accessory attachment . . . . . . . . . . . . . . . . . . . . . . . 4-5

4. Locking procedure for transit or repacking . . . . . . . . . . 4-6

(1) No.2/No.3 mirror unit (Mirror base B) lock . . . . . . . 4-6

(2) No.4/no.5 mirror unit (Mirror base C) lock . . . . . . . 4-6

5. Optional multi bypass feeder unit Installation Manual . . 4-6

(1) Open the upper unit of the main copier unit. . . . . . . 4-6

(2) Release the lock for the manual bypass unit and

remove the manual bypass unit. . . . . . . . . . . . . . . . 4-6

(3) Mount the multi bypass feeder unit onto

the main copier unit. . . . . . . . . . . . . . . . . . . . . . . . . 4-7

[ 5 ] GENERAL DESCRIPTIONS OF

EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1. Paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

2. Separation, transport section . . . . . . . . . . . . . . . . . . . . 5-2

3. Fuser, paper exit section . . . . . . . . . . . . . . . . . . . . . . . 5-2

4. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

4-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . 5-2

(1) Two-component developer . . . . . . . . . . . . . . 5-2

(2) Two-component magnetic brush

development . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

(3) Developing bias . . . . . . . . . . . . . . . . . . . . . . 5-2

5. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . 5-3

(1) Original table . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(2) Copy lamp . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(3) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

(4) Lens (Fixed focus lens) . . . . . . . . . . . . . . . . .5-3

(5) Lens home position sensor (LHPS) . . . . . . . .5-3

(6) Lens base . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

(7) Lens drive shaft . . . . . . . . . . . . . . . . . . . . . . .5-4

(8) Lens drive wire . . . . . . . . . . . . . . . . . . . . . . . .5-4

(9) No. 4/5 mirror base . . . . . . . . . . . . . . . . . . . .5-4

(10) Mirror motor . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(11) Mirror home position sensor (MHPS) . . . . . . .5-4

(12) No. 2/3 mirror base . . . . . . . . . . . . . . . . . . . .5-4

(13) Copy lamp unit . . . . . . . . . . . . . . . . . . . . . . .5-4

(14) Thermal fuse . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(15) Reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

(16) Exposure adjustment plates . . . . . . . . . . . . . .5-4

(17) Mirror base drive wire . . . . . . . . . . . . . . . . . . .5-4

(18) Lens drive motor . . . . . . . . . . . . . . . . . . . . . .5-4

(19) AE sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

5-2. Basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

6. Copy process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(1) Photoconductor . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(2) Process diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

(3) Actual process . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

(4) Transit of photoconductor drum surface

potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

(5) Process correction system . . . . . . . . . . . . . . . . . .5-12

1) Outline of the correction system . . . . . . . . . . .5-12

2) Correction operation . . . . . . . . . . . . . . . . . . . .5-12

[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . 6-1

1. Paper feed section, paper transport section,

power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-1. Paper feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-2. Paper feed roller ass’y removal . . . . . . . . . . . . . .6-1

1-3. Separation roller . . . . . . . . . . . . . . . . . . . . . . . . .6-2

1-4. Takeup roller, paper feed roller . . . . . . . . . . . . . .6-2

1-5. Resist roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

1-6. Transport belt . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-7. Socket holder unit . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-8. Lower unit PWB . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

1-9. Cassette paper empty detector (CPED1) . . . . . . .6-4

1-10. Power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

2. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . .6-5

2-1. Manual paper feed roller, manual takeup roller . . .6-5

2-2. Reverse rotation roller ass’y . . . . . . . . . . . . . . . . . .6-5

3. Fuser section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6

3-1. Fuser unit removal . . . . . . . . . . . . . . . . . . . . . . . . .6-6

3-2. Heater lamp replacement . . . . . . . . . . . . . . . . . . . .6-6

3-3. Upper heat roller ass’y removal . . . . . . . . . . . . . . .6-7

3-4. Upper separation pawl replacement . . . . . . . . . . . .6-7

3-5. Lower cleaning roller and

lower heat roller replacement . . . . . . . . . . . . . . . . .6-7

3-6. Scraper replacement . . . . . . . . . . . . . . . . . . . . . . .6-8

3-7. Thermistor/thermostat removal . . . . . . . . . . . . . . . .6-8

4. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

4-1. Copy lamp replacement . . . . . . . . . . . . . . . . . . . . .6-9

4-2. Copy lamp unit replacement . . . . . . . . . . . . . . . . . .6-9

4-3. Mirror base drive wire replacement . . . . . . . . . . . .6-9

4-4. Lens and lens drive wire replacement . . . . . . . . .6-10

4-5. No. 4/5 mirror unit and

peripheral parts replacement . . . . . . . . . . . . . . . .6-11

4-6. Optical unit removal . . . . . . . . . . . . . . . . . . . . . . 6-11

4-7. Other parts in the optical system . . . . . . . . . . . . . 6-11

4-8. Light adjustment plate/temperature fuse

removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

5. Drum section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

5-1. Drum unit removal . . . . . . . . . . . . . . . . . . . . . . . . 6-13

6. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

6-1. Developer unit removal . . . . . . . . . . . . . . . . . . . . 6-13

6-2. Developer cartridge removal . . . . . . . . . . . . . . . 6-13

6-3. Toner motor removal . . . . . . . . . . . . . . . . . . . . . 6-13

6-4. Toner density sensor . . . . . . . . . . . . . . . . . . . . . 6-14

7. Operation panel section/medium cabinet . . . . . . . . . . 6-14

8. Major parts in the frame side . . . . . . . . . . . . . . . . . . . . 6-14

8-1. Ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

8-2. Optical unit cooling fan removal . . . . . . . . . . . . . 6-14

8-3. Ventilation fan motor . . . . . . . . . . . . . . . . . . . . . 6-15

8-4. Transport roller clutch . . . . . . . . . . . . . . . . . . . . 6-15

8-5. Paper exit sensor . . . . . . . . . . . . . . . . . . . . . . . . 6-15

[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

1. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

(1) MG roller main pole position adjustment . . . . . . . . . 7-1

(2) Adjustment of clearance between DV doctor and

MG roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

2. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

A. Adjustments list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

B. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

C. Adjustment contents . . . . . . . . . . . . . . . . . . . . . . . . 7-6

(1) Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

(2) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

(3) Image distortion adjustment . . . . . . . . . . . . . . . 7-8

(4) Copy image center position adjustment . . . . . 7-12

(5) Focus adjustment (R esoluti on adjust m ent) . . . 7-14

(6) Copy magnification ratio adjustment . . . . . . . . 7-15

(7) Uniformity adjustment . . . . . . . . . . . . . . . . . . . 7-18

(8) Image loss/void area adjustment . . . . . . . . . . . 7-18

3. COPY DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . 7-23

(1) Copy density adjustment timing . . . . . . . . . . . . . 7-23

(2) Note for copy density adjustment . . . . . . . . . . . . 7-23

(3) Necessary items for the co py density adjustment 7-23

(4) Copy density adjustment mode . . . . . . . . . . . . . . 7-23

(5) Copy density adjustment procedure . . . . . . . . . . 7-23

A. Test chart (UK0G-0162FCZZ) setting . . . . . . 7-23

B. Normal copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-23

C. Normal copy mode (Toner save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

D. Photo copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

E. Auto copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-24

F. Auto copy mode (Toner save mode) copy

density adjustment . . . . . . . . . . . . . . . . . . . . . 7-25

(6) Copy density adjustment table . . . . . . . . . . . . . . 7-26

4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

(1) Transfer charger wire installation . . . . . . . . . . . . 7-27

(2) How to adjust the separation corona valtage . . . 7-27

(3) How to adjust the developing bias voltage . . . . . 7-27

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

1. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

3. Operating procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

4. Purpose list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

5. Details of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

6. User simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12

[ 9 ] SELF DIAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

1. Summary/purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

3. Clearing the self diag display . . . . . . . . . . . . . . . . . . . . .9-1

4. Self diag contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2

5. Conditions for the JAM display . . . . . . . . . . . . . . . . . . . .9-7

[10] SERVICING AT MEMORY TROUBLE AND

MAIN CONTROL PWB REPLACEMENT . . . .10-1

1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

3. Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

4. Set value recording sheet . . . . . . . . . . . . . . . . . . . . . . .10-4

5. Memory simulation list . . . . . . . . . . . . . . . . . . . . . . . . .10-5

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . .12-1

1. System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . .12-1

2. System operation at power ON . . . . . . . . . . . . . . . . . . .12-1

3. Main circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(1) Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(2) CPU (IC110) M37702 . . . . . . . . . . . . . . . . . . . . . .12-2

1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

2 Pin arrangement . . . . . . . . . . . . . . . . . . . . . . .12-2

3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . .12-3

4 CPU: M37702 (IC110) pin signals . . . . . . . . . .12-4

(3) Start/stop control circuit . . . . . . . . . . . . . . . . . . . .12-5

(4) Heater lamp control circuit . . . . . . . . . . . . . . . . . .12-6

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

(5) Driver circuit (Solenoid, magnetic clutch) . . . . . . .12-7

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(6) Stepping motor drive circuit . . . . . . . . . . . . . . . . .12-7

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(7) AE (Auto Exposure) sensor circuit . . . . . . . . . . . .12-7

(8) Toner supply motor drive circuit . . . . . . . . . . . . . .12-8

(9) Reset IC (IC113) . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

(10) Copy lamp control section . . . . . . . . . . . . . . . . . .12-9

4. Operating section . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(1) Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(2) Display circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . .12-12

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

(3) LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

5. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

(1) Signal name and output voltage . . . . . . . . . . . . .12-13

[1] GENERAL DESCRIPTION

1. Features

[Small]

• Compact design

• Small area for operation

[Speedy]

• Warm-u p time 30 se c or less, the fi rst co py 5.9 sec ∼ the fastest in

the class.

[Soft]

• The energy save mode reduces the total power consumption.

• Ozone generation is limited.

• Use of materials which can be recycled.

User simulation

The user can select the desired operating conditions easily. Auto clear time, power save mode time, power save mode warm up time can be set by the user simulation.

2. Target users

Average copy volume of 2,000 ∼ 3,000 sheets/mon th (max. 15,000 sheets/month)

3. System outli ne

Zooming range (64 ~ 129%)

Single manual feed (Standard)

250-sheet tray

50-sheet multi manual feed unit (SF-MF14) (Option)

1 – 1

[2] PRODUCT SPECIFICATIONS

1. Basic specifica tio ns

(1) Type: Table top (2) Copy speed

Paper size Normal Enlargement Reduction

B4 11 sheets/min 10 sheets/min 12 sheets/min A4 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min B5 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min

10″ × 14″ 11 sheets/min 10 sheets/min 12 sheets/min

Legal 11 sheets/min 10 sheets/min 12 sheets/min

Letter

(Landscape)

Note: Copy speeds in the enlargement/reduction copy are the

same in all the rates.

(3) Warm-up time

Normal 30 sec or less (20 °C, 65%RH, rated

(Preheat YES/NO) 10sec or less (Preheat mode)

Jam recovery time 8sec (Conditions: Standard condition

(4) First copy time

First copy time from each paper feed port

(5) Jam recovery time: 5 sec (Condition: Jam in a section except

(6) Multi copy

Max. quantity of multi copy 99 sheets

(7) Original

Max. original size B4/10″ × 14″ Original reference

position Detection NO Detection size AB series

14 sheets/min 10 sheets/min 12 sheets/min

voltage)

Max. 30sec (auto power shut off mode)

after 60sec of leaving after opening the door.)

Tray: 5.9sec Manual: 5.9sec

for the fuser section, within 6.0 sec from door open, standard condition.)

Left side, about 12mm from the rear

Inch series

(10) Void width

Normal Reduction Enlargement

Lead edge

3.0mm or less

Void area

Image

loss

(11) Paper exit

Paper exit tray capacity 100 sheets

(12) External view

W × D × H (mm) OC top 500 × 492 × 288 Occupying area W (mm) 500 + 257 (paper exit tray) +

Weight About 27.4 kg

(13) Power source

Voltage 100V, 110V, 120V, 127V, 220V, 220 ∼ 230V,

Frequency 50/60Hz common

(14) Power consumption

Max. power consumption 1.4 kW Average power consumption when operating

(Ref. value) Power consumption in standby (Ref. value) 72.5 Wh Power consumption in pre-heating (Ref. value) 47.7 Wh Power consumption in auto power shut off

(Ref. value) Auto OFF mode (Ref. value)

Dry heater connected Dry heater not connected

Energy consumption efficiency 49.4 Wh

Note: Max. value when an option is installed.

Side (front)

3.0mm or less Rear edge

1mm ∼ 3.0mm

Lead edge

3.0mm max. Side (front)

3.0mm max.

Rear edge

4.0mm max.

D (mm) 492

230 ∼ 240V, 240V

Lead edge

3.0mm or less Side (front)

3.0mm or less

Rear edge

1mm ∼ 3.0mm

Lead edge

5.0mm max. Side (front)

5.0mm max.

Rear edge

6.0mm max.

205 (option Multi paper feed unit)

Lead edge

3.0mm or less Side (front)

3.0mm or less

Rear edge

1mm ∼ 3.0mm

Lead edge

2.5mm max. Side (front)

2.5mm max.

Rear edge

3.0mm max.

582.4 Wh

14.8 Wh

9.5 Wh 0 Wh

(8) Copy magnification ratio

Fixed ratio

(9) Exposure

AB series 3R+3E/129, 122, 115, 81, 70, 64%

Inch series 2R+2E/129, 117, 78, 64%

Zoom width 64 ∼ 129%

Exposure mode Auto/Manual/Photo

Manual steps 9 steps

2. Details of each section

(1) Paper feed

Copying size (Max. ∼ Min.)

Paper feed system 1 tray + single manual feed Paper feed capacity 250 sheets × 1

2 – 1

AB series B4 ∼ A6 (Postcard) Inch series 10 × 14 ∼ 5 1/2 × 8 1/2

• AB series

Each paper

feed port

Tray B4 ∼ A5

Single manual feed

Paper feed

size

(Landscape) B4 ∼ A6

postcard (Portrait)

*For paper of 104 ∼

130g/m2, A4 or smaller.

Multi manual feed (OP)

• When in

multi paper feed

• When in

single paper feed

B4 ∼ A5 (Landscape)

B4 ∼ A6 52 ∼

*For paper of 104 ∼

130g/m2, A4 or smaller.

• Inch series

Each paper

feed port

Tray 10 × 14 ∼

Single manual feed

Paper feed

size

5 1/2 × 8 1/2

10 × 14 ∼ 5 1/2 × 8 1/2

*For paper of 28 ∼

34.5lbs, letter size or smaller.

Multi manual feed (OP)

• When in

multi paper feed

• When in

single paper feed

10 × 14 ∼ 5 1/2 × 8 1/2

*For paper of 28 ∼

34.5lbs, letter size or smaller.

Paper

weight

56 ∼ 80g/m

52 ∼ 130g/m

56 ∼ 80g/m

130g/m

Paper

weight

15 ∼ 21 lbs. Recommended

14 ∼ 34.5 lbs.

15 ∼ 21 lbs. Recommended

14 ∼ 34.5 lbs.

Special paper

Recommended recycle paper

No. 2 original, OPH, label, recommended recycle paper, postcards

Recommended recycle paper

Recommended recycle paper, No. 2 original, OPH label

Special paper

recycle paper

No. 2 original, OHP. recommended recycle paper

recycle paper

No. 2 original, OHP, label, recommended recycle paper

Paper

feed

position

Front

Side

Paper

feed

position

Front

Side

(2) Optical section

Light source Halogen lamp Exposure system Slit exposure by moving the

light source

Magnification ratio changing system

Lens Fixed focus lens

(3) Process section

Charging system (–) DC scorotron system Transfer system (–) DC scorotron system Separation

system

Copy mode

Main charger grid voltage

Charge/Transfer charger applied voltage

(4) Developer section

Developing system Two-component developing

Toner density detection system

Toner box capacity Toner 210 ±5g Developing bias DC–200V±3V

Standard 8-02 –750V

Photo 8-03 –460V

Toner save 8-04 –634V

By changing the lens position and scan speed.

Discharge plate/separation pawl

Simulations

No.

–50.0µA ± 4µA

system Magnetic sensor system

• Developer

Material Iron powder carrier Charging system Negatively charged by friction

• Toner

Charging system Positively charged by friction

(5) Fuser section

Fusing system Heat roller system

Upper heat roller surface temperature

Heater lamp 100V Halogen lamp 1000 W × 1 pc.

110V Halogen lamp 1000 W × 1 pc. 120V Halogen lamp 1000 W × 1 pc. 127V Halogen lamp 1000 W × 1 pc. 220V Halogen lamp 1000 W × 1 pc. 230V Halogen lamp 1000 W × 1 pc. 240V Halogen lamp 1000 W × 1 pc.

180°C

Grid

voltage

(6) Drive section

2 – 2

Main motor

standard

3-phase full wave drive, DC brushless

Rating: DC32V, max. 1.32A, 1500 rpm

3. Supplies

Middle and South America

No. Name Content Product name Life

1 OPC drum kit

2 Black developer

3 Black toner

4 Heat roller kit

Note 1: The heat roller kit for this series is common with the previous

models SF-2314/2414/2514.

OPC drum x 1 Cleaning blade x 1

SF114DR 50K

Black developer (560g) x 10 SF114LD

(SF114DVx10)

Black toner cartridge (200g) x 10 SF114LT

(SF114Tx10) Upper heat roller x 1 Upper fusing separation pawl x 3 Fusing bearing (F) x 1 Fusing bearing (R) x 1

SF214HR

(For LAG: SF214HR1)

Roller stopper x 2 Lower heat roller x 1 Lower fusing separation pawl x 4

60K × 10

6K × 10

80K

Environmental conditions Observe the following environmental conditions to ensure the copy

quality and machine performance. 1 Standard condition

20 ∼ 25 °C, 65 ±5% RH

2 Operational condition

(%)RH

85 60

10 30 35

(˚C)

3 Shipping condition of copier (within 2 weeks)

(%)RH

4 Supply storing condition

(%)RH

-5

Storage peri od: OPC drum Max. 36 mont hs fr om product i on Developer /T oner Max. 24 mon ths fr om pro duct ion

(˚C)

5 Identification of production number A. OPC drum The lot no. is of 10 digits. Each digit indicates as follows. This number

is printed on the F side flange.

1 2 3

7 8

-20 30 45

(˚C)

1 Numeral

Indicates the OPC drum sensitivity.

2 Alphabet

Indicates the model code. "M" is the code for this model.

3 Numeral

The end digit of the year of coating.

4 Numeral or X, Y, Z

Indicates the month of coating. X means October, Y November, and Z December.

56 Numeral

Indicates the day of coating.

7 Numeral or X, Y, Z

Indicates the month of packing. X means October, Y November, and Z December.

89 Numeral

Indicates the day of packing.

2 – 3

F Alphabet

Indicates the factory of production. "A" is the code for Nara plant. B. Developer and toner The lot number of toner is put on the individual cartridge package and

on the group package, and that of toner is put on the bag and the group package. The lot number is of 7 digits, each digit indicating as follows:

2 3

4 5 6

1 Alphabet

Indicates the factory of production. 2 Numeral

Indicates the end digit of the year of production. 34 Numeral

Indicates the month of production. 56 Numeral

Indicates the day of production. 7 Numeral

Indicates the sub lot number.

Normal C A B

1234

When a change is made on the product in the same operation system:

Normal C A B

15263748

A,B,C: Operation system

2 – 4

[3] EXTERNAL VIEW AND INTERNAL STRUCTURE

1. External view and intern al str uctu r e

1 2

Upper un i t

Lower unit

No. Name No. Name No. Name

Exit tray

Operation panel

Power switch

Fusing unit lever

Photoconductive drum

Document cover

Manual bypass

Front cover

Toner cartridge

Release lever

13 14

Document glass

Manual bypass guide

Paper tray

Fusing unit

3 – 1

2. Operation panel

SF-1014

AUTO

2 3 5 6 7 8 9 10 11 12 13 14

1/2x11

1/2x81/2

129%

1/2x11 10x14

117%

100%

1/2x14

78%

1/2x1151/2x 1/2

64%

51234

1/2x11

ZOOM

No. Name No. Name No Name

Auto/manual/photo key and indicators

Developer replacement required

indicator Copy ratio selector key and indicators

Copy quantity display

Clear key

Zero/readout key

Light and dark keys and exposure

indicators Misfeed indicator

Zoom keys

Copy ratio display key

Power save indicator

Print button and READY indicator

Maintenance required indicator

Toner required indicator

ZOOM indicator

10-key pad

Tray select key and indicators

1716

3 – 2

3. Cross section

51098

11 12

15 16

17 18

19 20

21 22

No. Name No. Name No Name

No.3 mirror

Cleaner unit

No.1 mirror

No.6 mirror

No.4 mirror

Manual paper feed roller

Tray paper feed takeup roller

Tray paper feed roller

Resist roller

Suction belt

Lower heat roller

[

Heater lamp

No.2 mirror

Discharge lamp

Copy lamp

Blank lamp

No.5 mirror

Manual feed take-up roller

Tray transport follower roller

Option tray transport roller

Transfer charger

Upper heat roller

Lower separation pawl

2829

2627

Drum separation pawl

Main charger unit

Lens unit

Developer magnet roller

Developer tank

Manual paper feed follower roller

Transport roller (Upper)

Resist roller

Photoconductor drum

Lower cleaning roller

Upper separation pawl

]

3 – 3

4. Switches, sensors, detectors

7 6

No. Abbreviation Function Type Operation

POD Paper out sensor Transmission photo sensor H when paper is sensed.

MHPS Mirror home position sensor Transmission photo sensor H at the home position.

LHPD Lens home position sensor Transmission photo sensor H at the home position.

PWD Paper size (large/small) sensor Transmission photo sensor L with the large size.

PPD Paper transport sensor Transmission photo sensor L when paper is sensed.

CPED1 Tray paper empty sensor Transmission photo sensor H when paper is present.

PID (MFD1)

Paper sensor for Manual paper feed unit (only single Manual Paper feed unit)

Transmission photo sensor L when the cover is open.

3 – 4

5. Clutches, sol eno id s

No. Abbreviation Name Function and operation

PSPS Paper separation solenoid For paper separation solenoid drive

RRC Resist roller clutch For resist roller rotation

TRC Transport roller clutch For transport roller rotation

MPFS Manual paper feed solenoid For takeup roller pressing

CPFC1 Tray paper feed clutch For paper feed roller rotation

MPFC Multi paper feed clutch For multi paper feed roller rotation

3 – 5

6. Motors

No. Abbreviation Name Function Type

VFM Paper exit fan motor

CFM Cooling fan motor For cooling the optical system DC brushless

MM Main motor For the main body drive and the option drive DC brushless

LM Lens motor For the optical lens drive DC stepping

MRM Mirror motor For the optical mirror base drive DC brushless

TM Toner motor For toner supply DC synchronous

For ventilation of the fuser unit. For cooling the machine and removing ozone.

DC brushless

3 – 6

7. PWBs

2 1

No. Name Description

AC circuit PWB AC power input

Discharge lamp PWB Discharge lamp drive

Main PWB Main body control

AE PWB Document density auto exposure detection

Blank lamp PWB Blank lamp control

Lower unit PWB Lower unit parts control

High voltage PWB Supply of the process high voltage and the developer bias voltage.

Operation PWB Operation input, display control

3 – 7

[4] UNP ACKING AND INSTALLAT ION

1. Packing drawi ng

List of packing materials and accessories

Name Q’ty 1 Packing case 1 2 Body 1 3 Polyethylene bag for paper exit tray 1 4 Vinyl sheet for body 1 5 Bottom case 1 6 Bottom case pad (L) 1 7 Bottom case pad (R) 1 8 AC cord sleeve 1 9 Paper exit tray 1

10 Instruction Manual 1

2. Installat ion

Installation conditions

The following installing conditions must be satisfied to assure the normal operations of the machine.

(1) Environment

1 Keep the machine away from direct sunlight and avoid instal-

lation near a window or in a bright place.

(Draw the curtain and close the blind shutter completely.) The plastic parts and the original cover may be deformed by direct sunlight. Avoid installation near a window even with frosted glass.

2 Avoid installation in high temperature or high humitity en-

vironments. Also, avoid installation where temperature or humidity may change quickly. (e.g., near an air conditioner).

Otherwise copy papers may be dampened and condensation may be generated in the machine. This may result in paper jams or poor copy quality.

(Ideal conditions): The best suitable conditions for machine

operation: 20°C ∼ 25°C: 65 ±5%RH

(Temperature/humidity range): 15°C ∼ 30°C (59°F ∼ 86°F),

20% ∼ 85% 65% for 35°C (95°F)

% RH

Humidity

˚C

15 30 35

(59˚ ) (86˚ ) (95˚)

(˚F)

4 – 1

3 Avoid installation where there is a lot of dust or vibrations.

If dust enters the machine, it may degrade copy quality and cause malfunctions.

4 Avoid installation on an unstable surface.

To assure the proper operations, install on a level surface.

5 Install in a well ventilated place.

(2) Space around the machine

Allow a space of about 15 cm (6 inches) between the rear side of the machine and the wall for ventilation of the cooling fan. Also allow sufficient space around the machine for operations.

(3) Installing table

Use a level (UKOGM0054CSZZ) to install the machine horizontally.

(Allowable tilt: 5 mm between the front and rear frames) (Note) If the machine is not installed horizontally, toner density con-

trol may not function properly. This may result in poor copy quality.

(4) Power source

1 The power source should be the rated voltage ±10% with the

capacity corresponding to the max. power consumption.

2 Do not use an extension cord, or operate any other equipment

from the same wall outlet.

6 Avoid installation where there is inflammable gases or am-

monium gases.

Installation near a diazonium copier may degrade copy quality and cause malfunctions.

7 Install near a power outlet.

(5) Grounding

To avoid electrical hazard, use the properly grounded wall outlet only.

(Carrying the machine)

When carrying the machine, remove the copy tray and hold the dent portions on the bottom.

4 – 2

3. Installation procedure

(1) Optical system unlocking

1 Unlock the No.2/No.3 mirror unit.

Remove the No.2/No.3 mirror unit fixing screw (1 pc.) on the left side of the copier.

(2) Cassette setting

1 Pull out the cassette.

Lift the cassette and slowly pull it out from the copier until it stops.

Mirror unit fixing screw

2 Unlock the No.4/No.5 mirror unit.

Remove the No.4/No.5 mirror unit fixing screws (2 pcs.) on the right side of the copier.

Mirror unit fixing screw

[In the case of SF-1014 with SF-MF14 (Optional) equipped.]

Open the paper feed tray on the right side of the copier.

2 Loading copy paper.

Set the copy papers in the cassette. Do not exceed the limit line indicator.

Gently insert the cassette fully into the copier.

Remove the No.4/No.5 mirror unit fixing screws (2 pcs.). Then close the paper feed tray.

Mirror unit fixing screw

4 – 3

(3) Developer setting

1 Open the front cabinet.

Push the front cabinet open buttons which are on the left and right sides of the copier, and open the front cabinet.

5 Remove the developer tank.

Slightly open the pawl which is fixing the developing unit and the developer tank with a screw driver, and pull out the developer tank.

Front cabinet open button

2 Open the toner cartridge.

While pressing the toner cartridge release lever (B), open the toner cartridge.

Release lever (B)

Toner cartridge

Developing unit

Developing tank

Pawl

6 Supply developer.

Supply a bag of developer to the developer supply port of the developing unit. At that time, move the bag of developer to supply developer evenly.

Developing

Developing unit

3 Remove the toner cartridge.

Slowly turn the toner cartridge clockwise to remove.

4 Remove the developing unit.

Loosen the fixing screw (step screw) which is fixing the copier and the developing unit, and slowly pullout the developing unit and Lenz hold Plate from the copier.

Fixing screw (step screw)

Lenz hold plate

7 Install the developer tank.

Insert the developer tank to the developing unit along the guide of the developing unit. At that time, check that the developer tank is securely fixed in the developing unit.

Developing unit

Developing tank

8 Install the developing unit.

Slowly insert the developing unit into the copier along the guide of the copier until it stops. Tighten the fixing screw which was removed in procedure (D), and fix the developing unit to the copier.

Fixing screw (step screw)

Developer unit

4 – 4

(4) Toner supply

1 Shake the toner cartridge up and down.

Shake the toner cartridge up and down 9 to 10 times.

2 Install the toner cartridge.

Install the toner cartridge to the copier along the guide of the copier. Turn the toner cartridge counterclockwise to lock.

(5) Toner density sensor level check

1 Turn on the power switch of the copier.

2 Adjust the developer level.

(a) Perform the key operations of simulation 25 sub 2.

C0 0 C

25 2

3 Supply toner.

Remove the sheet from the toner cartridge and supply toner. Slowly return the toner cartridge to the original position.

4 Close the front cabinet.

With the above key operations, simulation 25 is performed and the developer is stirred for 3 minutes.

(b) After stirring the developer for 3 minutes, the toner density

level is read by the main PWB. During stirring, the toner density sensor level is displayed on the MULTI COPY display. (Range: 1 ∼ 99) [Note] If the simulation is cancelled during execution, the

automatic reading cannot be performed. Do not cancel the simulation during execution.

c c c

(6) Accessory attachment

Attach the copy tray.

4 – 5

4. Locking procedure for transit or repacking

In general, reverse the procedures in "3. Installation procedure." For the optical system lock, perform the following procedure.

(1) No.2/No.3 mirror unit (Mirror base B) lock

1 Perform locking with the unit at its home position (normal copy

position) with the power ON and with the mirror stopped and with the external covers installed.

2 Lock the unit with the mirror unit fixing screw. (The hole in the left

cabinet)

Mirror unit fixing screw

(2) No.4/no.5 mirror unit (Mirror base C) lock

1 Turn off the power at the 64% position. Perform locking with the

external fitting installed.

2 Open the paper feed tray at the right side of the body, and fix the

unit with two fixing screws. (Two holes in the right cabinet)

Mirror unit fixing screw

2 Open the paper feed tray at the right side of the body, and fix the

unit with two fixing screws. (Two holes in the right cabinet)

5. Optional multi bypass feeder unit Installation Manual

(1) Open the upper unit of the main copier unit.

1 Press the release buttons on the left and right sides of the main

copier unit’s front cover, then open the front cover.

2 Push the upper half release lever (green) to the right and down,

then gently open the upper unit.

(2) Release the lock for the manual bypass unit and

remove the manual bypass unit.

1 Release the manual bypass unit by pressing upward on the rock

claws (green; 2 locations) which lock it in place in the main copier unit’s upper unit. The manual bypass unit will come out toward you slighly.

2 Pull out upon the manual bypass unit to remove it from the main

copier unit.

Mirror unit fixing screw

[SF-1014 with SF-MF14 (Optional) equipped.]

1 Turn off the power at the 64% position. Perform locking with the

external fitting installed.

Rock claw (latch)

Manual bypass unit

Rock claw (latch)

4 – 6

(3) Mount the multi bypass feeder unit onto the

main copier unit.

1 Slide the positioning pins which project from the multi bypass

feeder unit in to the grooves in the main copier unit, then push the multi bypass feeder unit into place to in stall it. At this time, to be sure that the multi bypass feeder unit is securely installed, push down once more on the fourcorners of the unit. (If it has not been securely installed, "CH" may appear in the COPIES MADE display when the power is turned on.)

Multi bypass feeder unit

Rock claw (latch)

Rock claw

(latch)

2 Close the upper unit of the main copier unit.

Positioning pins

Multi bypass feeder unit

4 – 7

[5] GENERAL DESCRIPTIONS OF

EACH SECTION

The general descriptions of the following sections are given:

1 Paper feed section 2 Separation, transport section 3 Fuser, paper exit section 4 Developer section 5 Optical system 6 Image forming section

Internal structure

When the CPCF turns off, rotation is stopped, and the takeup roller is pushed up by the roller release arm spring to the position.

(Manual paper feed operation) Multi When the solenoid B (MPFS) turns on, the takeup roller falls and the gate rises. Almost simultaneously the solenoid A (MPFC) turns on and the takeup roller and the paper feed roller turns to perform the paper feed operation.

1. Paper feed secti on

The paper feed system is in two ways: the tray feed and the manual feed. The cassette is of the universal type and has the capacity of 250 sheets. It is attached and detached at the front cabinet, that is, the front loading system. The manual paper feed is single for the this model. (The multi paper feed unit (SF-MF14) is an option.)

(Tray paper feed operation) The cassette paper feed clutch (CPFC) turns on, the paper feed roller shaft, the paper feed roller, and the takeup roller rotate. At the same time, the roller release arm is lowered by the limiter spring. As a result, the takeup roller falls by its own weight to reach the paper surface, performing the paper feed operation.

When the PPD turns on, the MPFS turns off and the RRC turns on. Almost simultaneously the MPFC turns off to return the roller and the gate to the initial state.

OFF

5 – 1

2. Separation, transport section

4. Developer section

After passing the resist roller section, the paper is transported to the transfer section. After transfer, the paper is separated from the drum by the separation electrode and the drum separation pawl, then transported to the fuser section by the transport belt.

3. Fuser, paper exit section

The toner image transferred on the paper is fused by the heat and pressure of the upper and the lower heat rollers. After fusing, discharge static electricity on the paper with the discharge brush. Then the paper is discharged to the copy tray.

4-1. General descriptions

(1) Two-component developer

The developer is composed of toner and carrier. Carrier serves as a medium for attaching toner onto the electrostatic image on the photoconductor drum. By stirring toner and carrier, they are rubbed to be charged positive (+) and negative (–) respectively. Since developer will deteriorate to degrade copy quality, it should be replaced regularly.

(2) Two-component magnetic brush development

The rotatable non-magnetic sleeve is provided over the magnet roller and is rotated. Carrier forms a magnetic brush on the sleeve surface by magnetic force to attach toner onto the electrostatic image on the photoconductor drum.

(3) Developing bias

When the photoconductor is charged and exposed to light (exposure), the surface potential (voltage) of the photoconductor will not be lost completely. (The residual potential remains.) Toner is attracted to the photoconductor by this residual potential, dirtying the photoconductor. As a result, a dirty copy of white background is generated. To prevent against this, a voltage of the same polarity and higher than the residual potential is applied to the MG roller, preventing toner from being attached to the photoconductor surface.

• Temperature control

Heat roller surface temperature detection

The heat roller is heated by the heater lamp. (When the heat roller surface temperature is 180 C˚ or lower, the heater lamp is actuated)

Contact open (*)

Abnormal high tem p erature

CPU

(Heater troub l e) Self diag di spl ay

Thermistor

Heat r olle r

Heater lamp

Thermostat

• Abnormally high temperature (H3)

• Abnormally low temperature (H4)

• Thermistor disconnection (H2)

When the thermostat contact is open, it is required to press the

reset button in the upper side of the thermostat. (The contact is not reset automatically.)

Toner Carrier

Residual potential < DV BIAS

MG roller

DV BIAS

-200V

Developing bias voltage

5 – 2

5. Optical system

5-1. General descriptions

• The optical system is composed of the fixed focus lens and six

mirrors. Since the fixed focus lens is employed, No.4/No. 5 mirror base is moved as well as the lens to change the distance between the document and the drum (OID, Original Image Distance) for reduction and enlargement. To move the lens and No.4/No. 5 mirror unit, he stepping motor is driven by the signal from the main control PWB to allow zooming of 0.70 to 1.22 (inch series: 0.64 ∼ 1.29) with 1% increment. (The SF-2314 has no zooming function, and its lens and No.4/No.5 mirror base are fixed.)

• Exposure is adjusted by changing the voltage of the copy lamp.

The copy lamp unit is provided with the AE sensor for detection of the original density to adjust the light quantity of the copy lamp according to the original density.

• For exposure, the slit exposure system is employed where the light

source is moved. (The original table is fixed.)

615

127

1311316

8 14

1 Copy lamp 2 Reflector 3 No. 1 mirror 4 No. 2 mirror 5 No. 3 mirror 6 Lens 7 No. 4 mirror 8 No. 5 mirror 9 No. 6 mirror F No. 2/No. 3 mirror base unit G Copy lamp unit H No. 4/No. 5 mirror base unit I Mirror motor J Lens/No. 4/No.5 mirror base drive motor K Lens home position sensor L Mirror home position sensor M Auto exposure sensor

(1) Original table

The original table is fixed, and originals are set to the left frame side as the reference.

(2) Copy lamp

100V s ystem (285W) 200V s ystem (285W)

(3) Mirror

Six mirrors are used. No. 1 mirror is provided in the copy lamp, No. 2/3 mirrors at the No.2/3 mirror base, No. 4/5 mirrors at the No. 4/5 mirror base. The No.2/3 mirror base is scanned during copying. The No.4/5 mirror base is moved to change the distance between the original and the photoconductor during zoom copying.

(4) Lens (Fixed focus lens)

• Construction (One group 3 lenses)

• Brightness (F8)

• Focus (175mm)

(5) Lens home position sensor (LHPS)

This sensor is used to sense the lens position. The sensor output signal serves as the basic signal to control the copy magnification ratio.

(6) Lens base

The lens is mounted to this lens base. It is moved in the paper feed direction in reduction copying, and in the paper exit direction in enlargement copying.

5 – 3

(7) Lens drive shaft

This shaft is to control the optical axis of the lens in zoom copying. The lens follows on the slide base shaft.

(8) Lens drive wire

The wire is used to drive the lens base and the 4/5 mirror base.

(9) No. 4/5 mirror base

The No. 4/5 mirror is installed to this base. It is moved in zoom copying in order to fit the distance between the original and the photoconductor.

(10) Mirror motor

The mirror motor is a stepping motor, and used to move the copy lamp unit and the No. 2/3 mirror base in order to obtain the rpm corresponding to each magnification ratio.

(11) Mirror home position sensor (MHPS)

Used to sense the home position of the copy lamp unit. This sensor is a photo transmission type sensor.

(12) No. 2/3 mirror base

The No. 2/3 mirrors are attached to this base. The mirror base is scanned by the mirror motor.

(13) Copy lamp unit

This is composed of No. 1 mirror, the thermal fuse, the copy lamp, the exposure adjustment plate, and the reflector, and is scanned by the mirror motor.

5-2. Basic operati on s

(Relationship among the original, the lens and the image in each magnification ratio)

Normal copy: The distance between the surface of original on the

table glass and the lens is made equal to the distance between the lens and the exposure surface of the photoconductor to make the original and the image equal to each other.

Enlargement copy: The lens is nearer to the original when compared

with the normal copy to shorten the distance between the original surface and the lens. The No. 4/5 mirror base is positioned further away from the lens to increase the distance between the lens and the exposure surface of the photoconductor. The distance between the original and the exposure surface of the photoconductor is greater than that in the normal copy.

(14) Thermal fuse

The thermal fuse is closely attached to the reflector in order to prevent against abnormal temperature rise in the optical system. In case of abnormal temperature rise, the power for the copy lamp is turned off.

100V system 200V system

(117°C) (117°C)

(15) Reflector

Light from the copy lamp is reflected onto the original.

(16) Exposure adjustment plates

Four exposure adjustment plates are attached to the copy lamp unit to adjust the exposure balance in the front and the rear frame direction.

(17) Mirror base drive wire

This wire is used to transmit the drive power of the mirror motor to the copy lamp unit and the No. 2/3 mirror base to scan the mirror base.

(18) Lens drive motor

This is a stepping motor, which is used to move the lens and the No. 4/5 mirror base.

(19) AE sensor

The original density is detected with the intensity of the copy lamp light reflected from the original. The measurement area is the mirror base scan area of about 100mm at the center. The element is a photo diode.

Reduction copy: When compared with the normal copy, the lens

comes closer to the photoconductor to increase the distance between the original and the lens. The distance between the lens and the exposure surface of the photoconductor is decreased. The No. 4/5 mirror base is positioned further away from the lens. The distance between the original and the exposure surface of the photoconductor is longer than that in the normal copy.

5 – 4

The mirror base scan speed (mirror motor rpm) is changed t o z oom.

The lens and the mirror are

Copy paper

feed direction

The mirr or sc an speed is c hanged to zoom .

Mirror scan speed Drum rotating speed < Mirror scan speed

Enlargement

moved to zoom.

(Optical system dirt correction)

The SF-1014 perform dirt correction by changing the copy lamp intensity according to the dirt degree in the optical system (the copy lamp unit, No. 1 mirror, No.2 mirror, No.3 mirror) to prevent against remarkable degrading of copy quality. The reference value is the AE sensor output value which is obtained when the reference plate is exposed with the copy lamp voltage of

67.7V (135.4V) at power ON.

This value is checked with sim 44-02.

Reference plate (Glass holder)

Table glass

Copy lamp light quantity "UP"

Original

(Copy lamp control in each copy density)

CLV (Copy lamp application voltage)

60 50 40

(V)

Reduction

[MAX. 85V(170V)]

[MIN. 40V(80V)]

The lens and the mirror are move to zoom.

Automatic exposure sensor

CPU

Reference value

> Measured value

Correction data output

EX1

234

EX5

5 – 5

6. Copy process

(1) Photoconductor

• This model uses OPC (organic photoconductor) as photoconduc-

tive material.

OPC layer CTL (Electric charge moving layer)

CGL (Electric charge generating layer) Aluminum layer

(2) Process diagram

Original

Copy lampMirror lens

High voltage unit

Exposure

Transfer

Exposure

Development

Drum up per

ima ge/paper

synchronization

Resist roller

Discharge lamp

Cleaning bl ade

Waste toner collection

Paper exit

Main corona unit

Separ a tion

Fusing

Charging

Discharging

Cleaning

Separation

Blank lamp

Toner

Developer

High voltage unit

Paper feed roller Transportroller

Manual paper feed Pape r ca sse tte

Discharge lamp

Cleaning bl ade

Seper ati on pa w l

Heat r olle r

Heater lamp

Separation cor ona unit

High voltage unit

Main corona unit

Seperation corona unit

Transfer charger

High voltage unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

Image forming process

Paper transport path

5 – 6

(3) Actual process

Step 1 (charging)

The OPC drum is negatively charged by corona discharge of the transfer charger . Positive charges are generated in the aluminum layer.

Aluminum layer

OPC drum

CGL

CTL

Seperation pawl

Transfer corona unit

High voltage unit

Step 2 (Discharging)

When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL. The negative charges move to the positive charges generated in the aluminum layer in step 1, and the positive charges move to the negative charges on the OPC drum surface charged in step 1. The positive charges and the negative charges are neutralized each other in the aluminum layer and on the OPC drum surface. As a result, the OPC dru m surface potential becomes 20V ∼ 30V.

Discharge lamp

Cleaning blade

Main corona unit

Seperation corona unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

Discharge lamp

Light

OPC drum

CTL

CGL

Aluminum layer

By performing step 1 (Charging) and step 2 (Discharging), the photoconductor itself is initialized to stabilize the drum surface potential.

Discharge lamp

Cleaning blade

Seper ati on pa w l

Main corona unit

Seperation corona unit

Blank lamp

Devel oper u nit MG roller

Resist roller

Transfer corona unit

5 – 7

Step 3 (Main Charging)

By negative discharging of the main charger, uniform negative charges are applied to the OPC drum surface. The OPC drum surface potential is controlled by the screen grid voltage to maintain the grid voltage at a constant level.

• When the drum surface potential is lower than the grid voltage,

electric charges generated by discharging of the charger go through the screen grid to charge the drum surface potential until it becomes equal to the grid voltage.

• When the drum surface potential virtually reaches the grid potential

level, electric charges generated by discharging of the charger flows through the electrode of the screen grid to the high voltage unit grid voltage output circuit, thus always maintaining the drum surface potential at a level virtually equal to the grid voltage.

• The main corona unit employs the scorotron system to charge the

photoconductor surface to a certain level uniformly. In addition, the conventional corona wire is replaced with the corona charging mechanism by saw-teeth plate (stainless steel plate of 0.1 mm thick). In corona discharge, oxygen molecules in the air are ionized to generate ozone (O3). The mechanism restrict the generation of ozone.

Main corona unit

Blank lamp

High voltage unit

Screen grid

CTL

CGL

OPC drum

Aluminum layer

Step 4 (Exposure)

Light from the copy lamp is radiated on the document, and the optical image of the document is reflected by the mirrors and projected through the lens to the OPC drum. The lighter portion of the document reflects more light (high intensity) to the OPC drum, and the darker portion of the document reflect less light (low intensity) to the OPC drum. Positive or negative charges are generated in the CGL of the OPC drum where lights are radiated. Negative charges generated in the CGL move towards the positive charges in the aluminum layer generated in step 3. While the positive charges in the CGL move towards the negative charges on the CPU drum surface generated in step 3. Therefore, positive charges and negative charges are neutralized in the aluminum layer and the OPC drum surface at the light radiating position, decreasing the OPC drum surface potential. The CGL electric charge generating amount increases in proportion to the document density, that is, reflected light intensity (the OPC drum surface intensity). Therefore, electric charges are generated less in the CGL layer corresponding to the lighter density of document (higher intensity of the OPC drum surface), and a greater quantity of the negative charges on the OPC drum surface is neutralized, decreasing the OPC drum surface potential more.

Discharge lamp

Cleaning blade

Seperation pawl

Seperation corona unit

On the contrary, electric charges are generated more in the CGL layer corresponding to the darker density of document (lower intensity of the OPC drum surface), and less quantity of the negative charges on the CPU drum surface is neutralized, decreasing the OPC drum surface less. Therefore, the OPC drum surface potential corresponding to the lighter portion of the document is lower, and that corresponding to the darker portion of the document is higher. Latent static-electricity images are formed in the above manner.

Transfer corona unit

Developer unit MG roller

Resist roller

5 – 8

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