Canon DADF-B1 Service Manual page 48

2. Large-Size Originals (single-sided)
When making single-sided copies of large-size originals, the second original is sent to the
copyboard glass after the first original has been delivered. In the case of large-size originals, delivery
occurs after the original moved to the reversal delivery assembly is turned over and returned to the
copyboard glass.
1. When the Copy Start key is pressed, the separation motor (M1) rotates counterclockwise for a
limited time so that the pickup roller moves down and the lifter moves up (in wait for pickup).
2. The separation motor (M1) stops once, and then starts to rotate clockwise so that the separation
roller and the pickup roller rotate to separate the first original.
The lifter starts to move down, and then the pickup roller starts to move up.
The separation motor stops when the pre-registration sensor (U502) detects the leading edge of
the original (ON).
3. The feed motor (M2) rotates clockwise, and the original is moved to the copyboard glass. When
the pre-registration sensor (U502) detects the trailing edge of the original (OFF), the ADF will be
in wait for pickup.
COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
Figure 2-256
Figure 2-257
Figure 2-258
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