Feed Drive System; Overview; Moving The Paper - Canon Puncher Unit-BS1 Service Manual

Feed Drive System

Overview

The machine punches holes in paper when the paper has been stacked in the finisher and stopped.
When paper arrives from the host machine, the shift roller starts to move it ahead; the shift transport motor then moves the paper
back to the puncher unit and forces its trail edge against the stopper to remove the skew to prepare for punching operation.
The chips occurring as the result of punching are collected in the punch chip case, which is monitored by a reflection type sensor
for identification of a full state.
The following shows the motors and sensors used for punching operation:
Punch Chip Case
Motor
Punch motor (M24)
Sensor
Punch 2/3hole sensor (PS39)
Punch clock sensor (PS38)
Punch motor home position sensor (PS36) Detects the Rack position
Punch front sensor (PS37)
Punch chip case sensor (PS40)
Punch chip case full sensor

Moving the Paper

Inside the machine, paper is moved as follows:
PS40
Punch Chip
Case Sensor
PS46
Punch Chip Case
Full Sensor
Drives the Rack slider
Detects the Rack 2/3hole position of the slider
Monitors the speed of punch motor rotation and timing at which the slider movement is
stopped
Detects the slider front/rear position
Detects the presence/absence of the punch chip case
Monitors the state (full) of the punch chip case
Finisher Controller PCB
J130 J131
25 1 2
M24
Punch
Motor
Paper Movement
Inlet Sensor
Prism
Description
Description
8
2. Technology
PS38
Punch Motor
Clock Sensor
PS39
Punch
2/3-hole
Sensor
PS37
Punch
Front Sensor
PS36
Punch Motor
Home Position
Sensor