Shutter Operation - Canon FINISHER-C1 Service Manual

I.

Shutter Operation

The finisher controller PCB closes the shutter mounted to the delivery slot before moving the
tray, thereby preventing trapping the existing stack on the tray by the delivery slot and intrusion of
the hands.
The shutter moves up (to close) when the feed motor (M1) rotates counterclockwise, and is
held in position when the motor stops. When the feed motor rotates counterclockwise once again, it
moves down (to open) to enable delivery.
When the shutter is held in up position, claws slide out of the swing guide to engage the back of
the shutter. This way, the existing stack and the swing guide engage while the tray is moved, thereby
preventing the guide from opening. The claws slide in when the shutter is moved down to release
the engagement.
The upward movement of the shutter is monitored by the shutter closed detecting switch (MS4),
and the downward movement is monitored by the shutter open sensor (PI5).
See the diagrams that follow for how these operations take place.
1) The feed motor rotates counterclockwise to move up the shutter.
COPYRIGHT © 1998 CANON INC. FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 FINISHER UNIT BASIC OPERATION
M1
Feed motor
Figure 2-251
2-39