Feeding And Delivering - Canon FINISHER-C1 Service Manual

CHAPTER 2 FINISHER UNIT BASIC OPERATION
C.

Feeding and Delivering

1. Outline
The finisher moves copies arriving from the copier to the normal tray, interrupt tray, or the
saddle stitcher unit (Saddle Finisher-C2) according to the mode of delivery. On the trays, the copies
are subjected to job offset or stapling as instructed by the copier.
The feed motor (M1) is a stepping motor, and the delivery motor (M2) is a DC motor. These
motors are controlled by the microprocessor (CPU) on the finisher controller PCB, and rotate either
clockwise or counterclockwise.
The paper paths are equipped with the following five sensors for detection of paper (arrival,
passage):
Inlet sensor (PI1)
Delivery sensor (PI3)
Stapling tray sensor (PI4)
Buffer path paper sensor (PI14)
Buffer path inlet paper sensor (PI17)
In addition, each delivery tray is equipped with a sensor designed to detect the presence/ab-
sence of paper on it.
No 1 tray paper sensor (PI11)
No. 2 tray paper sensor (PI12)
No. 3 tray paper sensor (PI13)
If a copy fails to reach or move past each sensor within a specific period of time, the finisher
controller PCB identifies the condition as a jam, and stops the ongoing operation and at the same
time informs the copier of the condition.
2-16 COPYRIGHT © 1998 CANON INC. FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)