Canon 1730, Service Manual

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Technical Explanation > Pickup Feed System > Controls > Fixing/Registration Assembly
Technical Explanation > Pickup Feed System > Controls > Fixing/Registration Assembly
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Multi-purpose Tray Pickup Assembly
● Overview
Paper on the Multi-purpose Tray Pickup Tray of the Multi-purpose Tray Pickup Unit is pushed
against the Multi-purpose Tray Pickup Roller by the Lifting Plate, and only a single sheet
of paper is separated and fed by the work of the Multi-purpose Tray Pickup Roller and the
Separation Pad.
Side Guide
Pressure Spring
Paper Detection
Lever
Multi-purpose Tray
Multi-purpose Tray
Separation Pad
Manual Feeder
Paper Sensor (PS7)
SL1
M8
Pickup Guide Plate
Multi-purpose
Tray Pickup Roller
● Pickup Retry Control
If the Pre-Registration Sensor (PS12) is not turned ON within the specified period of time
after the start of pickup operation, detection by the Multi-purpose Tray Paper Sensor (PS7) is
referred.
• When Multi-purpose Tray Paper Sensor (PS7) is ON:
Execute the pickup operation again. If the Pre-Registration Sensor (PS12) is not turned ON
after the start of re-pickup operation, a delay jam is notified.
• When Multi-purpose Tray Paper Sensor (PS7) is OFF:
Terminate the pickup operation.
● Paper Detection
Presence/absence of paper is detected by the Multi-purpose Tray Paper Sensor (PS7).
When absence of paper is detected but the same size and same type of papers exist in
another paper source, auto cassette change is executed.
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Fixing/Registration Assembly
● Registration Control
The Registration Roller is driven by the Main Motor (M2). There is the Registration Clutch
(CL1) between the Registration Roller and the Main Motor, and it controls ON/OFF of the
Registration Roller to align the paper with the image on the drum at the specified registration.
In addition, the speed is decreased right before a paper hits the Registration Roller so that
hitting sound is alleviated (speed is not decreased when picking up from the Cassette 1 of
imageRUNNER 1730/1740).
CL1 M2
Registration Roller
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