Folding/Delivery System - Canon FINISHER-C1 Service Manual

CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION
V. FOLDING/DELIVERY SYSTEM
1. Outline
The paper folding mechanism consists of a guide plate, folding rollers, paper pushing plate,
and paper positioning plate.
The guide plate is used to cover the folding rollers while sheets are deposited so as to prevent
sheets from coming into contact with the folding rollers during deposit.
Before the stack is folded, the guide plate moves down to enable the folding rollers to operate.
The folding rollers are driven by the folding motor (M2S), and the drive of the motor is monitored
by the folder motor clock sensor (PI4S).
The paper pushing plate is driven by the paper pushing plate motor (M8S), and the drive of the
paper pushing plate motor is monitored by the paper pushing plate motor clock sensor (PI1S). The
paper pushing plate home position sensor (PI14S) and the paper pushing plate top position sensor
(PI15S) are used to detect the position of the paper pushing plate.
After being folded into two by the folding rollers, a stack is moved ahead by the delivery roller
for delivery. The delivery roller is driven by the folding motor. The delivery sensor (PI11S) is
mounted to the delivery assembly to detect delivery of paper. The tray paper sensor (PI6S) is used
to detect the presence/absence of paper on the tray, but does not detect jams. The vertical path
sensor (PI17S) serves to detect the presence of paper after jam removal.
2. 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 folding rollers come into contact with it 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.
Paper positioning plate motor (M4S)
Guide plate motor (M3S)
Guide plate home position sensor (PI13S)
3-30 COPYRIGHT © 1998 CANON INC.
Stitching
ends
Figure 3-501
FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Equivalent of specific
number of pulses