Detecting The Presence/Absence Of Copy Paper - Canon NP6251 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM

3. Detecting the Presence/Absence of Copy Paper

The presence of copy paper on the holding tray is checked for re-pick up operation.
When sheets have been stacked on the holding tray, the re-circulating lever is placed
on the topmost sheet of the stack by operating the holding tray re-circulating motor (M7).
When the last sheet has been picked up, the re-circulating lever falls down to the
holding tray. This condition enables the holding tray re-circulating lever home position
sensor (PS19) to assume that the last sheet has been picked up, and the sensor
generates the last copy detection signal (HPLPD).
5-36
COPYRIGHT © 1997 CANON INC.
Holding tray
re-circulating
motor (M7)
Re-circulating lever
Holding tray re-circulating lever
home position sensor (PS19)
Figure 5-617
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Copy paper