Chapter 5 Pick-Up/Feeding System; Paper Transport System; Paper Pick-Up Assembly And Feeder; System - Canon NP6320 Service Manual

I. PAPER TRANSPORT SYSTEM
A.

Paper Pick-up Assembly and Feeder

1. Outline
When the pick-up clutch solenoids (SL1, SL6) engage, the main motor (M1) turns the roller,
feeding a sheet of copy paper to the registration rollers. The number of rotations of the pick-up
roller varies with the length of the copy paper.
The copy paper is fed by the registration rollers so that its leading edge is in line with the
leading edge of the toner image on the photosensitive drum. It then passes through the transfer,
separation, feed, fixing and delivery stages to the copy tray.
The copy paper is sensed by paper sensors (Q2, Q5). If it does not reach or pass the sensors
within the specified period, the DC controller PCB judges that a jam has occurred and causes the
Jam indicator on the control panel to flash.
Cassette paper sensors (Q6, Q7) sense whether there is paper in the cassette. If there is not, the
CASSETTE PAPER EMPTY signals (UCPD, LCPD) becomes '0', causing the Add Paper indica-
tor on the control panel to go ON.
COPYRIGHT © 1999 CANON INC.

CHAPTER 5 PICK-UP/FEEDING SYSTEM

Pick-up roller
Control ring
Figure 5-101
CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
SL1
SL6
5-1