Controlling The Movement Of Sheets - Canon FINISHER-C1 Service Manual

C.

Controlling the Movement of Sheets

When the leading edge of a sheet has moved past the inlet flapper, the intermediate feed roller
and the crescent roller start to move the sheet forward.
The intermediate feed roller is normally not in contact with the path bed. When the leading
edge of a sheet reaches the intermediate feed roller contact section, the feed roller press solenoid
(SL4S) causes the roller to come into contact with the path bed so as to move the sheet. The contact
is broken as soon as the leading edge of the sheet reaches the paper positioning plate. This series of
operations is executed each time a sheet arrives.
When the leading edge of the first sheet reaches the paper positioning plate, the paper position-
ing plate paper sensor (PI8) turns on. The arrival of the second and subsequent sheets will not be
checked since the first sheet will still be over the sensor.
The crescent roller keeps rotating while sheets are being deposited, thereby butting the leading
edge of each sheet against the paper positioning plate and, ultimately, keeping the leading edge of
the stack in order.
The alignment plate motor (M5S) drives the alignment plates for each sheet so as to put both
right and left edges of the sheet in order.
Intermediate feed roller
Feed motor
M1S
Figure 3-306
M1S
Figure 3-308
COPYRIGHT © 1998 CANON INC.
CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION
ON
SL4S
Feed roller contact
solenoid
ON
SL4S
3] The solenoid turns ON when the
next sheet arrives, and the roller
comes into contact.
FINISHER-C1/SADDLE FINISHER-C2 REV. 0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
1] The solenoid turns ON while paper
is being moved so that the roller
comes into contact.
M1S
2] The solenoid turns OFF when
Figure 3-307
OFF
SL4S
the paper butts against the pa-
per positioning plate. The feed
motor continues to rotate.
3-21