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2) Stapler unit oscillation position detection
The stapler unit home position is detected by the stapler unit home
position switch (MS4).
The stapler unit home position switch (MS4) detects that the stapler
unit is in the home position.
The stapling position is determined by the pulse number to drive the
stapler unit oscillation motor (M4).

3) Stapler unit oscillation motor control
a. Outline

The stapler unit oscillation motor (M4) control circuit is shown in
the figure below.
The stapler unit oscillation motor is a stepping motor of 4-phase
control. By controlling the outputs of pulse signals (A, A

∗

, B, B

∗

),

the stapler unit oscillation motor (M4) ON/OFF and its rotating
direction are switched.
The power supply circuit of the stapler oscillation motor (M4) is
provided with the stapler cover switch (MS2) and the fuse (ICP3).
The stapler cover switch cuts off the power supply circuit when the
stapler cover is opened. The fuse (ICP3) cuts off the power supply
circuit when an overcurrent flows through the circuit. The stapler
unit oscillation motor (M4) is stopped in that manner.

b. Operation

The microcomputer on the sorter controller PWB receives a com-
mand of the staple mode from the copier. The microcomputer (Q1)
sends the drive pulses (SPSWHA, SPSWHA

∗

, SPSWHB,

SPSWHB

∗

) to the driver circuit.

The motor driver circuit drives the stapler unit oscillation motor
(M4) according to the signal.
When the stapler unit oscillation motor is held, the output timing of
the pulse signals (A, A

∗

, B, B

∗

) is fixed.

1) Outline
Paper holding is performed during stapling. The paper holding arm
presses paper by the stapler roller when the staple unit oscillates. At
the same time, the stapler unit bin supporting arm supports the bin
from the bottom to stable stapling operation.

Save position

Stapling position

Stapler oscillation motor (M4)

Copy paper

Oscillation home

position sensor (MS4)

Stapling position 

Stapler oscillation motor

Home position

Oscillation home position detection switch

M4

Q44

Motor
driver

Q1

CPU

MS4

NO

ICP3

+24V

+24V

Stapler unit home

position switch 

SPSWHA
SPSWHA
SPSWHB
SPSWHB

B

B

A

Stapler unit

oscillation motor

Stapler cover switch

Sorter controller PWB

MS2

NO

∗

∗

∗

∗

Paper holding arm

Staple roller

Paper

Bin

Paper holding arm

Bin supporting arm

AR-SS2

9 – 14

The functions of this machine are largely classified into the following
six blocks: the transport drive system, the bin unit drive system, the
stapler unit drive system*, the guide bar drive system, and the control
system.

The electrical control of this machine is made by the sorter controller.
The major rolls of the IC on the sorter controller are as follows:

Code

Role

Q1

Sequence control

Q3

Contains the sequence program.

Q2

Sensor adjustment values, and operation modes.

Q4

Control of communication with the copier

<Stapler oscillation unit>

Stapling home
position sensor (PI7)

Lead cam center
position sensor (PI2)

<Stapler unit>

<Bin unit>

: Motor reverse rotation

Stapling request signal from the copier (AFSTRQ)

Stapler oscillation
motor (M4)

Stapler motor (M5)

Bin shift motor (M1)

Stapler unit oscillation home
position switch (MS4)

Operation
section

Transport

drive system

Stapler
unit drive
system

Control

system

Guide bar
drive
system

Bin unit
drive system

Sensor

Switch

Q1 CPU

Q3

RAM

Q2

ROM

Q4

communication

IC

Sorter controller PWB

Motor

Copier

Operation
Section

AR-SS2

9 – 15

Sorter controller input (1/2)

M5

M3

M1

M2

M4

Stapler motor

Guide bar oscillation motor

 Bin shift motor

Transport motor

Stapler unit oscillation motor

J201

J7

J102

1

2

3

4

1

2

3

4

11

10

9

8

1

2

3

4

1

2

3

4

J9

A

B

A

B

A

B

A

B

A

B

A

B

+24V

+24V

+24V

J110

J8

J12

J112

J111

J116

1

2

4

3

5

6

1

2

1

2

1

2

6

5

3

4

2

1

1

2

3

4

5

6

1

2

4

3

5

6

1

2

3

4

5

1

2

3

4

5

5

4

3

2

1

6

5

3

4

2

1

3

4

5

6

7

8

Sorter controller PWB

For details, refer to page 9-8.

For details, refer to page 9-12.

For details, refer to page 9-7.

For details, refer to page 9-8.

For details, refer to page 9-15.

∗

∗

∗

∗

∗

∗

AR-SS2

9 – 16

Sorter controller output (2/2)

"0" when the bin unit reaches
the lower limit.

"0" when stapling is in the home
position.

PI8

PI9

PI4

PI5

PI6

MS5

NO

NO

COM

COM

NO

COM

J201

SPEMP

SPCART

SPLSU

SPLHP

SELFP

"1" when staple empty

"0" when staple cue is completed.

"1" when cartridge empty

IBUTU

BUL

BLL

SOP

0" when the bin unit reaches
the upper limit

"0" when an obstacle is detected.

"1" when connected with the copier. 

"0" when manual stapling

J7

J11

+24V

+5V

+5V

+5V

J13

J102

J103

J104

J202

J301

MS6

MS3

Sorter controller PWB

+5V

+5V

7

8

9

11

3

3

3

2

2

3

7

8

9

11

5

4

3

1

7

8

9

11

7

8

9

11

1

2

12

13

1
2
3

3
2
1

4
5
6

3
2
1

1
2
3

3
2
1

1

2

Staple empty detection

Cartridge empty
detection

Stapling home position
sensor

Staple cue sensor

Obstacle detection

Bin unit upper limit sensor

Bin unit lower limit sensor

Joint sensor

Operation panel

AR-SS2

9 – 17