Re-Pickup - Canon CP660 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM
D.

Re-Pickup

The duplexing driver PCB turns on the duplexing feeding clutch (CL5) at the end of
horizontal registration so as to move paper once gain.
About 0.5 sec after the duplexing unit paper sensor (PS24) has detected the leading
edge of paper, the duplexing driver PCB turns of the reversing roller releasing solenoid
(SL7; if the paper is not A4R, LTRR, or A5); about 1.0 sec later, it turns off the duplexing
feeding clutch (CL5). While keeping the paper at re-pickup wait position, the duplexing
driver PCB waits for a re-pickup command from the DC controller PCB.
When the re-pickup command is received from the DC controller PCB, the duplexing
driver PCB controls the speed of the duplexing motor (M8) so that it matches the
machine's feeding speed; thereafter, it turns on the duplexing feeding clutch (CL5) to
move the paper to the machine's feeding assembly.
Reversing roller releasing solenoid
SL7
Reversing
roller
releasing
plate
OFF
Reversing Reversing roller
assembly
5-28
COPYRIGHT © 1999 CANON INC.
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Duplexing upper guide
Duplexing feeding roller 1
Duplexing lower guide
Duplexing unit
Figure 5-405
M8
CL5
Duplexing unit
paper sensor lever
Duplexing unit paper sensor (PS24)
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Duplexing
feeding roller 2