3. Detecting the Presence/Absence of Copy PaperThe 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 placedon 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 theholding tray. This condition enables the holding tray re-circulating lever home positionsensor (PS19) to assume that the last sheet has been picked up, and the sensorgenerates the last copy detection signal (HPLPD).Figure 5-617Holding trayre-circulatingmotor (M7)Copy paperRe-circulating leverHolding tray re-circulating leverhome position sensor (PS19)COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 5 PICK-UP/FEEDING SYSTEM5-36
