Canon iR C6800 Series Service Manual page 619

3) In 100 msec, the duplexing reversal motor (M10) rotates in reverse to move the paper with the trailing edge first
in the direction of delivery.
4) When the leading edge of preceding paper moves past the curl removing roller by 20 mm, the reversal shifting
solenoid (SL3) goes on to move away the reversal 1 roller in preparation for the arrival of the following paper.
The duplexing reversal motor (M10) stops after the trailing edge of the paper has moved past the reversal 2 roller.
M10
Rotation in reverse
F-8-55
Curl-removing roller
M9
20mm
ON
SL3
M10
Reversal 2 roller
F-8-56
Stop
Chapter 8
8-51