Fold-Enhancing Unit - Canon Unit-L1 Service Manual

Fold-enhancing Unit

In the fold-enhancing unit, Z-fold paper is fed to the fold-enhancing position, where the folds are pressed by the fold-enhancing
rollers to make them crisp. The fold-enhancing rollers are housed in the fold-enhancing holder fixed to the rack, which moves to
press these rollers against the paper folds.
The fold-enhancing holder is moved by driving the fold-enhancing motor (M4). This motor (M4) rotates forward to press the first
fold and then rotates backward to press the second fold firmly. The holder home position is detected by the fold-enhancing HP
sensor (PS3). The rotation of the fold-enhancing motor (M4) is detected by the fold-enhancing motor clock sensor (PS4).
Delivery Mouth
Fold-enhancing Holder
Fold-enhancing Motor (M4)
<Related service mode>
• Auto adjustment of the fold-enhancing control values:
SORTER > FUNCTION > PF-MTR
Z-fold Paper
Fold-enhancing
Fold-enhancing Motor
Clock Sensor (PS4)
First fold
1st Fold-enhancing
Second fold 2nd Fold-enhancing
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2. Technical Explanation
Fold-enhancing Roller
Rack
Fold-enhancing HP Sensor (PS3)