CHAPTER 2 BASIC OPERATION
2-38
COPYRIGHT © 1999 CANON INC.
CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. Duplexing Copying Mode
When making double-sided copies, the face of an original is scanned, and the original is turned
over while it is moved through the reversal delivery assembly; thereafter, the original is returned to
the pre-registration sensor (U502) once, and matched against the image leading edge position on the
copyboard glass, and its back is scanned before delivery.
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).
Figure 2-265
2.
The separation motor 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.
When the pre-registration sensor (U502) detects the leading edge of the original (ON), the
separation motor stops.
Figure 2-266
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.
Figure 2-267