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OPERATIONS AND TIMING
1. After the Copy Start key is pressed for the second side, the set-back roller and the duplexing unit outlet
roller rotate clockwise.
2. When the first copy paper reaches the duplexing unit outlet sensor, the set-back roller and the duplexing
unit outlet roller stop; the outlet roller duplex rotates.
3. When the trailing edge of the first copy paper leaves the set-back roller, the set-back roller rotates
counterclockwise, thereby returning the second copy paper.
3–70
Set-back rollers
Figure 3-422
Figure 3-423
Set-back roller
Figure 3-424
COPYRIGHT © 1998 CANON INC.
Outlet roller duplex (CL4)
Duplex exit detect sensor (PS14)
Photosensitive
drum
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Slip roller
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