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2) After the horizontal registration sensors (LED1 to 4, PTR1 to 4) detect the edge of the paper at its

inner side in keeping with the paper size signals arriving from the host machine, the horizontal
registration motor (M2P) drives the punch slide unit to a predetermined position further towards
the front, and stops the unit at this position.

Horizontal registration sensor 1(LED1,PTR1)
: detects the edge of A3, A4, LT, and LD papers

Horizontal registration sensor 2 (LED2,PTR2)
detects the edge of B4, B5, LT-R, and LG papers

Horizontal registration sensor 3 (LED3,PTR3)
: detects the edge of A4-R paper

Horizontal registration sensor 4 (LED4,PTR4)
: detects the edge of B5-R paper

3) When the trailing edge sensor (LED5, PTR5) detects the trailing edge of the paper, drive of the

inlet feed motor (M9) and first feed motor (M1) on the finisher is stopped to stop paper feed.
Next, the punch motor (M1P) is driven to punch holes in the paper.

Punch

4) When punching ends, drive of the inlet feed motor (M9) and first feed motor (M1) on the finisher

is started, the horizontal registration motor (M2P) is operated in the reverse direction, and the
punch slide unit is returned to its home position where it comes to a stop.

5) Even if paper to be punched continues to arrive, the punch slide unit returns to its home position

for each arriving sheet, and steps 1 to 4 are repeated.

Punch motor (M1P)

Inlet feed motor (M9)

First feed motor (M1)

Trailing edge detection 
sensor (LED5, PTR5)
Horizontal registration sensor 
(LED1 to 4, PTR1 to 4)

: Motor CW

: Motor CCW

Horizontal registration 
motor (M2P)

Horizontal registration home 
position sensor (PI1P)

Punch home position 
sensor (PI3P)

24V power and 5V power are supplied from the finisher controller PCB when the power switch

on the host machine is turned ON.

24V power is used for driving motors, while 5V power is used for driving sensors and the ICs on

the punch driver PCB.

24V power to the motors is not supplied when either of the two door switches on the puncher

unit is open.

J23-4

J23-2

J4-4

J4-2

Front door 

switch

(MS2P)

24V

5V

Finisher 
controller 
PCB

24V

5V

5V

Punch driver PCB

Motor system

Sensors

Logic

The 24V power supplies for the punch motor (M1P) and horizontal registration motor (M2P) are

equipped with a fuse designed to blow when an overcurrent flows.