Canon J1, Service Manual

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Technology > Saddle Stitcher Unit > Overview of Folding Operation > Double Folding a Stack
Technology > Saddle Stitcher Unit > Overview of Folding Operation > Double Folding a Stack
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Paper folding roller stop position
Paper folding/feeding is performed.
Paper feeding is performed.
Paper folding home
position sensor (PI21)
Sensor flag
Delivery outlet Paper feed inlet
Paper folding motor (M2)
Paper pushing plate
motor (M8)
Paper pushing plate home
position sensor (PI14)
Paper pushing plate top
position sensor (PI15)
Delivery sensor (PI11)
Tray paper sensor (PI6)
: Motor CW
: Motor CCW
Paper folding home
position sensor (PI21)
Equivalent of 10mm by paper folding motor
F-2-60
F-2-61
■ Double Folding a Stack
To fold a stack consisting of 10 or more A4R or LTR-R sheets, folding is executed twice for
the same sheet.
The paper folding rollers rotate in reverse for an equivalent of 20 mm after gripping the stack
for a length of 20 mm, enabling the paper folding rollers to apply an increased degree of
pressure along the crease on the stack.
Then, the paper folding rollers rotate normally, and the paper pushing plate returns to its
home position while the stack is being delivered.
This way, a stack requiring a large force may properly be folded with less pressure.
1) The paper pushing plate pushes the stack in the direction of the paper folding rollers.
M2
Paper folding motor
M8
Paper folding roller
Paper pushing plate motor
Paper pushing plate
2) The paper folding rollers grip the stack for a length of about 20 mm.
M2
Paper folding motor
20 mm
(approx.)
F-2-62
F-2-63