Canon Inner Finisher-J1, Service Manual

Page: 32 / 101

Staple Operation
■ Outline
In staple operation, the specified number of sheets of paper is stapled by the stapler unit.
The staple position varies depending on the staple mode and paper size.
The stapler unit's home position is detected by the stapler shift HP sensor (PS11).
After power ON, the finisher controller PCB drives the stapler shift motor (M7) to return the stapler unit to the home position.
If the stapler unit is at the home position to begin with, it remains there in standby mode.
When a staple instruction is received from the host machine, the staple unit moves to the staple wait position according to the
staple position.
Staple position Distance from the stapler shift HP sensor (PS11)
Front 1-point stapling 102.5mm
Rear 1-point stapling 363.0mm
Center 2-point stapling Rear stapling: 292.2 mm, front stapling: 172.2 mm
Rear stapling is performed first and then front stapling.
Manual stapling 1.5mm
Stapler Shift
Motor(M7)
Stapler Unit
Stapler Shift
HP Sensor (PS11)
■ Stapler Unit
Stapling occurs when the cam driven by the stapler motor (M8) rotates once.
The cam's home position is detected by the staple home position sensor.
If the staple home position sensor is off, the finisher controller PCB runs the stapler motor until the staple home position sensor
turns on and resets the staple cam to its initial state.
Staple cartridge and staples inside the staple cartridge are detected by the staple detection sensor.
Whether the staple in the staple cartridge is pushed out to the leading edge of the cartridge is detected by the staple edging
sensor.
• Number of sheets that can be stapled
Item Specifications Remarks
Stapling capacity Small size
(A4, B5, LTR, 16K, EXEC)
52 to 81.4g/m
2
: 50 sheets
More than 81.4 to 105 g/m
2
: 30 sheets
More than 105 to 256 g/m
2
: 2 sheets
• Heavy: 5.5 mm or less
• In cover mode, this in-
cludes two heavy cover
sheets.
Large size
(A3, B4, A4R, 11X17(279 X 432 mm),
LGL, LTR-R, 8K) 52 to 81.4g/m2: 30 sheets
More than 81.4 to 105 g/m
2
: 20 sheets
More than 105 to 256 g/m
2
: 2 sheets
2. Technical Explanation
26