Canon iR2016, iR2020 finisher-u1 Service Manual

Service Manual

Finisher, Sorter, DeliveryTray

Finisher-U1

Sep 14 2005

Application

This manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and repair

of products. This manual covers all localities where the products are sold. For this reason, there may be information in this

manual that does not apply to your locality.

Corrections

This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When

changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need

arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition

of this manual.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

Trademarks

The product names and company names used in this manual are the registered trademarks of the individual companies.

translated into another language, in whole or in part, without the written consent of Canon Inc.

Printed in Japan

Caution

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

Symbols Used

This documentation uses the following symbols to indicate special information:

Symbol Description

Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.

Indicates an item requiring care to avoid electric shocks.

Indicates an item requiring care to avoid combustion (fire).

Indicates an item prohibiting disassembly to avoid electric shocks or problems.

Indicates an item requiring disconnection of the power plug from the electric outlet.

Indicates an item intended to provide notes assisting the understanding of the topic in question.

Memo

Introduction

REF.

Indicates an item of reference assisting the understanding of the topic in question.

Provides a description of a service mode.

Provides a description of the nature of an error indication.

Introduction

The following rules apply throughout this Service Manual:

1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation.

In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal. The expression "turn on the power" means flipping on the power switch, closing the front door, and closing the delivery unit door, which results in supplying the machine with power.

2. In the digital circuits, '1'is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low".(The voltage value, however, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'. In practically all cases, the internal mechanisms of a microprocessor cannot be checked in the field. Therefore, the operations of the microprocessors used in the machines are not discussed: they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the DC controller PCB to the loads.

The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes, and major changes will be communicated in the form of Service Information bulletins. All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be able to identify and isolate faults in the machine."

Contents

Chapter 1 Specifications

1.1 Product Specifications ................................................................................................................................... 1- 1

1.1.1 Specifications ........................................................................................................................................... 1- 1

1.2 Names of Parts ............................................................................................................................................... 1- 2

1.2.1 External View............................................................................................................................................ 1- 2

1.2.2 Cross-sectional View............................................................................................................................... 1- 3

Chapter 2 Functions

2.1 Basic Construction.......................................................................................................................................... 2- 1

2.1.1 Overview ................................................................................................................................................... 2- 1

2.1.2 Outline of Electric Circuits ...................................................................................................................... 2- 1

2.2 Basic Operation............................................................................................................................................... 2- 1

2.2.1 Basic Operation........................................................................................................................................ 2- 1

2.3 Feed Drive System......................................................................................................................................... 2- 3

2.3.1 Overview ................................................................................................................................................... 2- 3

2.3.2 Feed Roller Control ................................................................................................................................. 2- 4

2.3.3 Offset Roller Control................................................................................................................................2- 4

2.3.4 Feed Motor Control.................................................................................................................................. 2- 6

2.3.5 Offset Motor Control................................................................................................................................2- 6

2.4 Staple Operation ............................................................................................................................................. 2- 7

2.4.1 Functional Configuration......................................................................................................................... 2- 7

2.4.2 Staple Motor Control ............................................................................................................................... 2- 7

2.5 Stack Tray Operation ..................................................................................................................................... 2- 7

2.5.1 Overview ................................................................................................................................................... 2- 7

2.5.2 Stack Ejection........................................................................................................................................... 2- 8

2.5.3 Stack Slide Motor Control....................................................................................................................... 2- 9

2.5.4 Stack Tray Shift Motor Control .............................................................................................................. 2- 9

2.6 Detecting Jams ............................................................................................................................................. 2- 10

2.6.1 Overview ................................................................................................................................................. 2- 10

2.7 Power Supply ................................................................................................................................................ 2- 10

2.7.1 Overview ................................................................................................................................................. 2- 10

2.7.2 Protection Function................................................................................................................................2- 11

Chapter 3 Parts Replacement Procedure

3.1 Removing from the Host Machine................................................................................................................ 3- 1

3.1.1 Finisher Assembly.................................................................................................................................... 3- 1

3.1.1.1 Detaching the Rear Cover............................................................................................................... 3- 1

3.1.1.2 Detaching the Lower-right Cover ................................................................................................... 3- 1

3.1.1.3 Upper-right Cover ............................................................................................................................. 3- 1

3.1.1.4 Removing the Shift Tray ................................................................................................................. 3- 1

3.1.1.5 Removing the Finisher ..................................................................................................................... 3- 1

Contents

3.1.2 Shift Tray....................................................................................................................................................3- 2

3.1.2.1 Removing the Rear Cover ...............................................................................................................3- 2

3.1.2.2 Removing the Lower-right Cover....................................................................................................3- 2

3.1.2.3 Removing the Upper-right Cover....................................................................................................3- 2

3.1.2.4 Removing the Shift Tray ..................................................................................................................3- 2

3.1.2.5 Removing the Finisher .....................................................................................................................3- 2

3.2 External Covers...............................................................................................................................................3- 3

3.2.1 External Covers ........................................................................................................................................3- 3

3.2.1.1 Removing the Inner Cover of the Finisher ....................................................................................3- 3

3.2.2 Finisher Front Cover ................................................................................................................................3- 3

3.2.2.1 Front Cover of Finisher ....................................................................................................................3- 3

3.2.3 Top Harness Cover ..................................................................................................................................3- 3

3.2.3.1 Removing the Top Cover.................................................................................................................3- 3

3.3 Drive System....................................................................................................................................................3- 3

3.3.1 Feed Motor ................................................................................................................................................3- 3

3.3.1.1 Removing the Top Cover.................................................................................................................3- 3

3.3.1.2 Removing the Inner Cover of the Finisher ....................................................................................3- 4

3.3.1.3 Removing the Finisher Controller PCB..........................................................................................3- 4

3.3.1.4 Removing the Inret Guide................................................................................................................3- 4

3.3.1.5 Removing the Front Cover Safety Switch .....................................................................................3- 4

3.3.1.6 Removing the Drive Unit ..................................................................................................................3- 4

3.3.1.7 Removing the Process Tray Unit....................................................................................................3- 5

3.3.1.8 Removing the Feed Motor ...............................................................................................................3- 5

3.3.2 Stapler ........................................................................................................................................................3- 5

3.3.2.1 Removing the Inner Cover of the Finisher ....................................................................................3- 5

3.3.2.2 Removing the Stapler.......................................................................................................................3- 5

3.3.3 Offset Motor...............................................................................................................................................3- 5

3.3.3.1 Removing the Top Cover.................................................................................................................3- 5

3.3.3.2 Removing the Offset Motor..............................................................................................................3- 6

3.3.4 Stack Slide Motor......................................................................................................................................3- 6

3.3.4.1 Removing the Top Cover.................................................................................................................3- 6

3.3.4.2 Removing the Inner Cover of the Finisher ....................................................................................3- 6

3.3.4.3 Removing the Finisher Controller PCB..........................................................................................3- 6

3.3.4.4 Removing the Inlet Guide ................................................................................................................3- 7

3.3.4.5 Removing the Front Cover Safety Switch .....................................................................................3- 7

3.3.4.6 Removing the Drive Unit ..................................................................................................................3- 7

3.3.4.7 Removing the Process Tray Unit....................................................................................................3- 7

3.3.4.8 Removing the Stack Slide Motor ....................................................................................................3- 8

3.4 Document Feeding System ...........................................................................................................................3- 8

3.4.1 Feed Roller (Upper Guide)......................................................................................................................3- 8

3.4.1.1 Removing the Top Cover.................................................................................................................3- 8

3.4.1.2 Removing the Inner Cover of the Finisher ....................................................................................3- 8

3.4.1.3 Removing the Finisher Controller PCB..........................................................................................3- 8

3.4.1.4 Removing the Feed Roller Holder ..................................................................................................3- 8

3.4.1.5 Removing the Feed Roller...............................................................................................................3- 9

3.4.2 Stack Tray Assembly ...............................................................................................................................3- 9

3.4.2.1 Removing the Stack Tray Harness ................................................................................................3- 9

3.4.2.2 Removing the Tray Guide Top Cover ............................................................................................3- 9

3.4.2.3 Removing the Stack Tray Assembly ..............................................................................................3- 9

Contents

3.4.3 Offset Roller .............................................................................................................................................. 3- 9

3.4.3.1 Removing the Offset Roller ............................................................................................................. 3- 9

3.5 Electrical System ............................................................................................................................................ 3- 9

3.5.1 Stack Tray Paper Surface Sensor ......................................................................................................... 3- 9

3.5.1.1 Removing the Top Cover................................................................................................................. 3- 9

3.5.1.2 Removing the Inner Cover of the Finisher.................................................................................. 3- 10

3.5.1.3 Removing the Finisher Controller PCB ....................................................................................... 3- 10

3.5.1.4 Removing the Inlet Guide.............................................................................................................. 3- 10

3.5.1.5 Removing the Front Cover Safety Switch ................................................................................... 3- 10

3.5.1.6 Removing the Drive Unit................................................................................................................ 3- 11

3.5.1.7 Removing the Process Tray Unit ................................................................................................. 3- 11

3.5.1.8 Removing the Stapler..................................................................................................................... 3- 11

3.5.1.9 Removing the Stack Tray Paper Surface Sensor...................................................................... 3- 11

3.5.2 Stack Tray Lower Limit Sensor ............................................................................................................ 3- 11

3.5.2.1 Removing the Rear Cover............................................................................................................. 3- 11

3.5.2.2 Removing the Lower-right Cover ................................................................................................. 3- 12

3.5.2.3 Removing the Upper-right Cover ................................................................................................. 3- 12

3.5.2.4 Removing the Shift Tray ................................................................................................................ 3- 12

3.5.2.5 Removing the Stack Tray Lower Limit Sensor........................................................................... 3- 12

3.5.3 Process Tray Paper Sensor ................................................................................................................. 3- 12

3.5.3.1 Removing the Top Cover............................................................................................................... 3- 12

3.5.3.2 Removing the Inner Cover of the Finisher.................................................................................. 3- 13

3.5.3.3 Removing the Finisher Controller PCB ....................................................................................... 3- 13

3.5.3.4 Removing the Inlet Guide.............................................................................................................. 3- 13

3.5.3.5 Removing the Front Cover Safety Switch ................................................................................... 3- 13

3.5.3.6 Removing the Drive Unit................................................................................................................ 3- 14

3.5.3.7 Removing the Process Tray Unit ................................................................................................. 3- 14

3.5.3.8 Removing the Process Tray Paper Sensor ................................................................................ 3- 14

3.5.4 Finisher Controller PCB......................................................................................................................... 3- 14

3.5.4.1 Finisher Controller PCB ................................................................................................................. 3- 14

3.5.5 Front Cover Safety Switch .................................................................................................................... 3- 15

3.5.5.1 Removing the Top Cover............................................................................................................... 3- 15

3.5.5.2 Removing the Inlet Guide.............................................................................................................. 3- 15

3.5.5.3 Removing the Front Cover Safety Switch ................................................................................... 3- 15

3.5.6 Inlet Sensor ............................................................................................................................................. 3- 15

3.5.6.1 Removing the Top Cover............................................................................................................... 3- 15

3.5.6.2 Removing the Inlet Sensor............................................................................................................ 3- 16

3.5.7 Stack Slide HP Sensor .......................................................................................................................... 3- 16

3.5.7.1 Removing the Top Cover............................................................................................................... 3- 16

3.5.7.2 Removing the Inner Cover of the Finisher.................................................................................. 3- 16

3.5.7.3 Removing the Finisher Controller PCB ....................................................................................... 3- 16

3.5.7.4 Removing the Inlet Guide.............................................................................................................. 3- 17

3.5.7.5 Removing the Front Cover Safety Switch ................................................................................... 3- 17

3.5.7.6 Removing the Drive Unit................................................................................................................ 3- 17

3.5.7.7 Removing the Process Tray Unit ................................................................................................. 3- 17

3.5.7.8 Stack Slide HP Sensor................................................................................................................... 3- 18

3.5.8 Offset HP Sensor ................................................................................................................................... 3- 18

3.5.8.1 Removing the Top Cover............................................................................................................... 3- 18

3.5.8.2 Removing the Inner Cover of the Finisher.................................................................................. 3- 18

Contents

3.5.8.3 Removing the Finisher Controller PCB........................................................................................3- 18

3.5.8.4 Removing the Offset HP Sensor ..................................................................................................3- 19

3.5.9 Tray Clock Sensor .................................................................................................................................. 3- 19

3.5.9.1 Removing the Stack Tray Harness ..............................................................................................3- 19

3.5.9.2 Removing the Tray Guide Top Cover ..........................................................................................3- 19

3.5.9.3 Removing the Stack Tray Assembly ............................................................................................3- 19

3.5.9.4 Removing the Tray Clock Sensor.................................................................................................3- 19

3.5.10 Offset Solenoid......................................................................................................................................3- 20

3.5.10.1 Removing the Top Cover.............................................................................................................3- 20

3.5.10.2 Removing the Offset Solenoid ....................................................................................................3- 20

3.5.11 Paper Holder Solenoid.........................................................................................................................3- 20

3.5.11.1 Removing the Top Cover.............................................................................................................3- 20

3.5.11.2 Removing the Inner Cover of the Finisher ................................................................................3- 20

3.5.11.3 Removing the Finisher Controller PCB......................................................................................3- 20

3.5.11.4 Removing the Inlet Guide ............................................................................................................3- 21

3.5.11.5 Removing the Front Cover Safety Switch .................................................................................3- 21

3.5.11.6 Removing the Stapler...................................................................................................................3- 21

3.5.11.7 Removing the Paper Holder Solenoid .......................................................................................3- 21

Chapter 4 Maintenance

4.1 User Maintenance...........................................................................................................................................4- 1

4.1.1 Cleaning the Offset Roller.......................................................................................................................4- 1

4.2 Maintenance and Inspection .........................................................................................................................4- 1

4.2.1 Periodically Replaced Parts ....................................................................................................................4- 1

4.2.1.1 Periodically Replaced Parts ............................................................................................................4- 1

4.2.2 Durables.....................................................................................................................................................4- 1

4.2.2.1 Durables .............................................................................................................................................4- 1

4.2.3 Periodical Servicing..................................................................................................................................4- 1

4.2.3.1 Periodical Servicing ..........................................................................................................................4- 1

4.3 Outline of Electrical Components .................................................................................................................4- 2

4.3.1 Outline of Electrical Components ..........................................................................................................4- 2

4.4 Variable Resistors (VR), Light-Emitting Diodes (LED), and Check Pins by PCB .................................4- 3

4.4.1 Light-Emitting Diodes and Check Pins by PCB...................................................................................4- 3

4.4.2 Finisher Controller PCB ..........................................................................................................................4- 3

4.4.3 Functions of the DIP Switch ...................................................................................................................4- 4

4.5 Upgrading.........................................................................................................................................................4- 5

4.5.1 Upgrading(Finisher Unit).........................................................................................................................4- 5

Chapter 5 Error Code

5.1 Service Error Code .........................................................................................................................................5- 1

5.1.1 Service Error Code ..................................................................................................................................5- 1

5.2 Alam Code........................................................................................................................................................5- 4

5.2.1 Alam Code.................................................................................................................................................5- 4

Chapter 1 Specifications

Contents

1.1 Product Specifications........................................................................................................................................ 1-1

1.1.1 Specifications .............................................................................................................................................. 1-1

1.2 Names of Parts.................................................................................................................................................... 1-2

1.2.1 External View.............................................................................................................................................. 1-2

1.2.2 Cross-sectional View................................................................................................................................... 1-3

1.1 Product Specifications

Chapter 1

1.1.1 Specifications

T-1-1

Item Description Remarks

Stack tray 1-stage tray (w/ extension tray for large-size

Stacking method Stack tray lowering mechanism (1-bin self-

Delivery method Face-down

Loadable paper size

Stack paper size 64g/ to 200g/m2

Paper sizes A3, B4, A4R, B5, B5R, A5R, postcard,

Media types Plain paper, recycled paper, colored paper,

Modes Staple loading A3,A4,A4R,B4,B5,LDR,LGL,LTR,LTRR

Number of loadable sheets

Alignment range Staple loading Paper width: 210.0 mm to 297.0 mm

Paper detection Intermediate process tray Attached

Number of mixed sheets

Operation panel Not provided

Display panel Not provided

Installation type Built-in

Dimensions 460mm(W)x520mm(D)x300mm(H)

Weight 12kg

Power supply Power (24 V/13 V) is supplied from host

Longitudinal 139.7mm to 457mm

Lateral 98.4mm to 320mm

Non-staple loading A3, A4, A4R, A5, A5R, B4, B5, B5R, LDR,

Stack offset loading A3,A4,A4R,B4,B5,LDR,LGL,LTR,LTRR - Shift amount

Option tray Non-sort, Sort

Standard tray Non-sort, Sort

Optional tray Upper tray

When optional trays are attached

Non-staple loading Paper width: 210.0 mm to 297.0 mm

Stack offset loading Paper width: 210.0 mm to 297.0 mm

Stack tray Attached

Mixed-size Height: Max. 50 mm 20 mm when the

Mixed-staple Height: Max. 50 mm (Max. 30 booklets)

Mixed-mode Height: Max. 50 mm (Max. 30 booklets)

paper)

running)

double postal card, 4-leaf postcard, custom size (182 x 140 mm to 292 x 432 mm), envelopes (Env. #4, COM10, Monarch, DL, ISO-B5, ISO-C5) 64 g/m2 to 128 g/m2

punched paper, thick paper, secondary drawing copy, transparency, label sheet, postcard, double postal card, 4-leaf postcard, envelope

LGL, LTR, LTRR, postcard, envelope

A4/B5/A5/LTR/STMT/STMTR: 770 sheets (80 g/m2) or 26 mm A3/B4/A4R/B5R/LDR/LGL/LTRR: 150 sheets (80 g/m2) or 20 mm Staple Mode A4/B5/LTR: 30 sheets or 100 mm A3/B4/A4R/B5R/LDR/LGL/LTR-R: 30 sheets or 50 mm

A4/B5/A5/LTR/STMT/STMTR: 200 sheets (80 g/m2) or 26 mm A3/B4/A4R/B5R/LDR/LGL/LTRR: 150 sheets (80 g/m2) or 20 mm Staple Mode A4/B5/LTR: 30 sheets or 26 mm A3/B4/A4R/LDR/LGL/LTR-R: 30 sheets or 20 mm

Small size: 26 mm in height Large size: 13 mm in height Lower tray Small size: 26 mm in height Large size: 13 mm in height

A4, B5: 50 sheets (64-80 g/m2) A3, B4, A4R: 30 sheets 64-80 g/m2)

machine.

Two-bin configuration can be used by attaching an option.

43.5 to 87 mm

- Shift range 210 mm to 297 mm

Based on 80 g/m2

paper

additional tray C1 for finisher is installed (loadability is not assured).

0010-1686

1-1

Chapter 1

Maximum power consumption

Item Description Remarks

Power supply from host machine

Approx. 45 W or less

Operating noise Host machine + DF +

Option Additional tray C1 for finisher

Stapling method Stapling by rotary cam

Sizes of paper that can be stapled

Number of sheets that can be stapled

Staple loading method Replacement of dedicated staple sheet cartridge

No staple detection Detected

Manual stapling Disabled

Standby function Provided

-Stapling position (front 1-point)

Finisher

Item Description Remarks

1-point stapling A3,A4,A4R,B4,B5,LDR,LG

50 sheets of small-size paper, 30 sheets of large-size paper (Max.) 2 sheets of 128 g/m2 paper + 40 sheets of 80 g/m2 paper (small-size)

(5000 staples)

A3 , B4 , A4 , A4R , B5 , LDR , LGL , LTR , LTR-R

Host machine noise + 3 dB (full system)

T-1-2

L,LTR,LTRR

Paper thickness: 5.5 mm or less

5.0 2mm

F-1-1

1.2 Names of Parts

1.2.1 External View

[1] Top cover [2] Stack tray [3] Stack extension tray 1 [4] Stack extension tray 2 [5] Finisher front cover [6] Staple

0010-1687

F-1-2

1-2

Chapter 1

1.2.2 Cross-sectional View

[1] Top cover [2] Offset roller [3] Tray paper holder [4] Stack tray paper presence sensor [5] Stack tray [6] Paper holder [7] Feed roller

0010-1688

[1]

[7]

[6]

[2]

[3]

[4]

[5]

F-1-3

1-3

Chapter 2 Functions

Contents

2.1 Basic Construction ............................................................................................................................................. 2-1

2.1.1 Overview ..................................................................................................................................................... 2-1

2.1.2 Outline of Electric Circuits.......................................................................................................................... 2-1

2.2 Basic Operation .................................................................................................................................................. 2-1

2.2.1 Basic Operation ........................................................................................................................................... 2-1

2.3 Feed Drive System ............................................................................................................................................. 2-3

2.3.1 Overview ..................................................................................................................................................... 2-3

2.3.2 Feed Roller Control ..................................................................................................................................... 2-4

2.3.3 Offset Roller Control................................................................................................................................... 2-4

2.3.4 Feed Motor Control ..................................................................................................................................... 2-6

2.3.5 Offset Motor Control................................................................................................................................... 2-6

2.4 Staple Operation ................................................................................................................................................. 2-7

2.4.1 Functional Configuration ............................................................................................................................ 2-7

2.4.2 Staple Motor Control................................................................................................................................... 2-7

2.5 Stack Tray Operation.......................................................................................................................................... 2-7

2.5.1 Overview ..................................................................................................................................................... 2-7

2.5.2 Stack Ejection.............................................................................................................................................. 2-8

2.5.3 Stack Slide Motor Control........................................................................................................................... 2-9

2.5.4 Stack Tray Shift Motor Control................................................................................................................... 2-9

2.6 Detecting Jams ................................................................................................................................................. 2-10

2.6.1 Overview ................................................................................................................................................... 2-10

2.7 Power Supply ................................................................................................................................................... 2-10

2.7.1 Overview ................................................................................................................................................... 2-10

2.7.2 Protection Function ................................................................................................................................... 2-11

2.1 Basic Construction

Chapter 2

2.1.1 Overview

The finisher consists of four blocks: a stack tray, stapler, intermediate process tray, and feeder blocks. The following illustration shows locations of these four blocks and the finisher controller PCB.

F-2-1

2.1.2 Outline of Electric Circuits

The operation sequence of the finisher is controlled by the finisher controller PCB. The finisher controller PCB incorporates a 16-bit CPU to perform sequence control (and serial communication with the host machine). The CPU on the finisher controller PCB incorporates a ROM that stores an operation sequence program. The finisher controller PCB drives motors in response to the commands sent from the host machine via a serial communication line. The finisher controller PCB also sends information about various sensors and switches to the host machine via the serial communication line.

0010-1689

0010-1690

Motor

Finisher controller

Sensor

PCB

Switch

CPU

Solenoid

Motor driver

Clutch*1

*1: Only when option tray is installed

F-2-2

2.2 Basic Operation

2.2.1 Basic Operation

1) The offset roller [1] rises.

2) Paper is fed only with the feed roller [2]. (The offset roller and feed roller are driven together.)

Host machine

(DC controller PCB

with CPU)

Option tray PCB*1

Motor*1

Sensor*1

0010-1691

2-1

Chapter 2

F-2-3

3) The offset roller [3] lowers to feed paper together with the feed roller [4].

4) After passing through the feed roller [4], paper is fed only with the offset roller [3] and then it stops on the process tray.

F-2-4

5) Open the claw [5].

6) The offset roller [6] turns reversely to push the paper against the restriction plate.

7) The paper holder [7] prevents the paper from being curled in conjunction with the descending offset roller.

F-2-5

8) While pressing the paper with the offset roller [8] to cause offset, align the paper to the front paper alignment plate.

9) Raise the offset roller [8], and then close the claw [9].

F-2-6

10) Steps 2 to 9 are repeated to put the succeeding sheet in the process tray.

11) After completion of alignment or stapling, the Claw [10] catches hold of the paper stack.

2-2

F-2-7

12) With the paper stack held by the paper holder, the stack slider [11] moves toward the stack tray and stops.

13) The return wall [12] is pressed by the stack slider, being raised on the process tray.

14) The tray paper holder [13] moves away from the stack tray.

Chapter 2

F-2-8

15) The stack slider [14] moves in the opposite direction from the stack tray.

16) The lever of the Claw [15] is engaged with the groove in the tray and the paper holder opens while moving.

17) The stack stops at the return wall [16], falling into the stack stay.

F-2-9

18) The slider [17] moves to the original position.

19) The tray paper holder [18] catches hold of the sheets dropped in the stack tray.

F-2-10

2.3 Feed Drive System

2.3.1 Overview

Sheets of paper fed from the host machine are put in the process tray. The sheets are aligned and stapled in the process tray and then ejected to the stack tray. The following illustration shows major components of the feed system.

0010-1692

2-3

Chapter 2

[4]

[2]

[3]

[1]

F-2-11

M1: Stach tray shift motor M2: Feed motor M3: Stack slide motor M4: Offset motor [1]: Finisher controller PCB [2]: Paper surface sensor signal [3]: Process tray papepr presence sensor signal [4]: Inlet sensor signal

2.3.2 Feed Roller Control

The feed roller is driven by the feed motor (M2). when the motor turns in the normal direction,the feed roller[1] is driven to eject paper foward the stack tray.

0010-1693

F-2-12

2.3.3 Offset Roller Control

a. Paper feed

The offset roller [1] is driven by the feed motor (M2). When prescribed time lapses after paper is fed by the feed roller [2], the offset solenoid [3] is turned off to bring the offset roller [1] into contact with the paper, feeding the paper toward the track tray along with the feed roller [2]. When the trailing edge of the paper leaves the feed roller, the paper is then fed only by the offset roller [1].

0010-1694

2-4

Chapter 2

F-2-13

a.Paper Feed 1

When prescribed time lapses, the feed motor (M2) turns in the reverse direction to drive the offset roller [1] to pull the paper back to the processing tray.

F-2-14

b. Alignment/Offsetting

This machine opens the claw [2] by turning on the claw open/close solenoid [1] before pulling the paper back to the processing tray. Then, the machine pulls back the paper to press the paper against the trailing edge stopper for longitudinal alignment.

[1]

F-2-15

After completion of feed-directional alignment, the offset roller [1] is brought into contact with the upper surface of the paper. Then, the offset roller is driven by the offset motor (M4) to move the paper toward the rear of the machine, thus aligning the paper in the across-the-width direction.

[2]

2-5

+ 61 hidden pages