Canon DADF-B1 Service Manual page 28

3. Separation Sensor (SR3)
The original feeding path is equipped with a separation sensor (SR3) to monitor the movement of
originals.
If the separation sensor does not detect an original a specific time after the separation motor has
started to rotate clockwise to move an original, the ADF controller will assume the condition as a
separation fault (delay), and will stop the machine and cause the copier to indicate the Jam message.
Separation sensor
Detected by the separation sensor
within a specific time
COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 BASIC OPERATION
Separation sensor (SR3)
Not detected by the separation sensor
within a specific time
Figure 2-218
2-15