Canon J1 - Overview of Folding Operation; Controlling the Movement of Stacks; Overview

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Technology > Saddle Stitcher Unit > Overview of Folding Operation > Controlling the Movement of Stacks
Technology > Saddle Stitcher Unit > Overview of Folding Operation > Controlling the Movement of Stacks
Overview of Folding Operation
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Overview
The paper folding mechanism consists of a guide plate, paper folding rollers, paper pushing
plate, and paper positioning plate.
The guide plate is used to cover the folding rollers while sheets are output so as to prevent
sheets from coming into contact with the folding rollers during output.
Before the stack is folded, the guide plate moves down to enable the folding rollers to
operate.
The following shows the names and the functions of the motors and sensors used by the
paper folding mechanism:
Motor Function
Paper folding motor (M2) Drives the folding roller.
Paper pushing plate motor (M8) Drives the paper pushing plate.
Sensor Function
Paper pushing plate motor clock sensor (PI1) Detects the paper pushing plate motor clock.
Paper folding motor clock sensor (PI4) Detects the paper folding motor clock.
Tray paper sensor (PI6) Detects the presence/absence of a stack of
sheets in the saddle delivery tray.
Delivery sensor (PI11) Detects the paper delivery.
Paper pushing plate home position sensor
(PI14)
Detects the paper pushing plate home position.
Paper pushing plate top position sensor (PI15) Detects the paper pushing plate leading edge
position.
Vertical path paper sensor (PI17) Detects the presence/absence of paper after
removal of a jam.
Paper folding home position sensor (PI21) Detects the paper folding home position.
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Controlling the Movement of Stacks
When a stack has been stitched (2 points), the paper positioning plate lowers so that the
stack will move to where the paper folding rollers come into contact with the stack and where
the paper pushing plate is located.
The position of the paper positioning plate is controlled in reference to the number of motor
pulses coming from the paper positioning home position sensor (PI7).
At the same time as the paper positioning plate operates, the guide plate lowers so that
folding may take place.
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Paper folding roller
Guide plate
Paper positioning plate
Paper pushing guide
Paper positioning plate
home position sensor(PI7)
Stitching
ends
Equivalent of specific
number of pulses
Paper positioning plate
motor (M4)
Guide motor (M3)
Guide home position
sensor (PI13)
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