3–70OPERATIONS AND TIMINGCOPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)1. After the Copy Start key is pressed for the second side, the set-back roller and the duplexing unit outletroller rotate clockwise.2. When the first copy paper reaches the duplexing unit outlet sensor, the set-back roller and the duplexingunit outlet roller stop; the outlet roller duplex rotates.Figure 3-422Figure 3-4233. When the trailing edge of the first copy paper leaves the set-back roller, the set-back roller rotatescounterclockwise, thereby returning the second copy paper.Figure 3-424Set-back rollers Outlet roller duplex (CL4)Slip rollerSet-back rollerPhotosensitivedrumDuplex exit detect sensor (PS14)
