Canon 1730, Service Manual

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Technical Explanation > Pickup Feed System > Controls > Delivery Assembly
Technical Explanation > Pickup Feed System > Controls > Delivery Assembly
● Size Mismatch Detection Control
Whether the size is mismatched is determined by paper length.
The time a paper passes through the Registration Sensor (PS11) is converted into distance.
Compared with the paper size (specified by the user in case of the Multi-purpose Tray Pickup
Tray) detected by the Cassette Size Detection Switch (SW1), if the measured distance is
shorter than the specified distance (16mm), it is judged that the size is mismatched.
Priority of the size mismatch detection control is lower than other controls. In addition, due to
the behavioral error of paper, the measured distance has a margin of error of approx. +6mm.
Paper size mismatch cannot be detected with the following combinations because the
difference in paper size is small.
• A4-R, LTR-R
• A5-R, STATEMENT-R
• B5-R, EXEC-R, 16K-R
In case of envelope, paper size mismatch is not detected (because detection by the
Registration Sensor (PS11) is not stable when feeding the envelope).
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Delivery Assembly
● Delivery Acceleration Control
Since elasticity of bond paper is low, delivery speed is increased when feeding the bond
paper to improve the stackability.
Condition for acceleration: When the Finisher is not installed, and the bond paper is set
Timing for acceleration: When the trailing edge of paper passes through the Fixing Paper
Sensor (PS19)
Timing to return the speed: When the Registration Clutch (CL1) is turned ON for the
succeeding paper
PS19
Pressure Roller
Delivery Speed
Increased Position
Fixing Outlet Roller
Delivery Roller Bond Paper M1
● Delivery Full Detection
If the Delivery Paper Full Sensor (PS4) is ON for a specified period of time, it is notified to the
Main Controller PCB. After the notification, printing stops by the Controller's decision.
PS4
Detection Lever
Delivery Point
F-2-98
F-2-99