Canon imageRUNNER 330 Service Manual page 165

CHAPTER 7 PICK-UP/FEEDING SYSTEM
d. Moving Up/Down the Pick-Up Roller (pick-up operation)
The pick-up roller and the feeding roller are kept in a roller holder, and the pick-up roller
operates in conjunction with the feeding roller shaft. The pick-up roller shaft is moved up/down by
the cam 1, controlled by the pick-up solenoid (SL1) driven by the main motor (M1).
In standby, the pick-up roller shaft is at its upper limit, operating as follows when picking up a
single sheet of paper:
1) The pick-up solenoid (SL1) turns on, and the drive of the cam motor rotates the cam 1.
2) As a result, the pick-up lever starts to swing.
3) As a result, the pick-up roller shaft moves down to come into contact with the stack of
paper, and picks a single sheet by the drive of the pick-up motor (M5).
4) The cam 1 rotates and, as a result, the pick-up roll shaft moves up.
Pick-up
roller shaft
Figure 7-110 Pick-Up Roller Shaft Arrangement
Feeding roller shaft
Pick-up roller shaft
Pick-up lever
Pick-up solenoid
(SL1)
Figure 7-111 Pick-Up Roller Shaft Up/Down Movement
7-12
COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Feeding roller
Roller holder
Cam 1
ON
Roller holder
ON
Pick-up roller
SL2 turns on to rotate the cam 1.