Canon DADF-B1 Service Manual page 39

CHAPTER 2 BASIC OPERATION
2. Delivery (clockwise rotation)
When the reversal delivery inlet sensor
(SR4) detects the leading edge of an original
(ON), the reversal delivery motor (M3) rotates
clockwise to move the original to the reversal
delivery assembly.
At this time, the reversal delivery motor
rotates clockwise so that the original is moved
to the paper path where the flapper is closed.
Figure 2-235
3. Start of Reversal
When the reversal outlet sensor (U505)
detects the leading edge of an original (ON),
the feed motor (M2) rotates to move the
original back to the original glass.
Figure 2-236
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COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4. End of Reversal
When the reversal outlet sensor (U505)
detects the trailing edge of an original (OFF),
the feed motor (M2) moves the original over a
specific distance (until the leading edge of an
original reaches the reversal stop position, and
stops.
Figure 2-237
5. Switching the Feeding Path
When the original has stopped at the
reversal stop position, the reversal delivery
motor (M3) is rotated counterclockwise for an
equivalent of 60 mm to keep the flapper open.
Figure 2-238