User Guide

CHAPTER 5 PICK-UP/FEEDING SYSTEM

1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

5-1

I. PAPER PICK-UP ASSEMBLY AND FEEDER

A. Outline

When the pick-up clutch solenoid (SL1) engages, 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 sensor (Q2 and 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.

The cassette paper sensor (Q11) senses whether there is paper in the cassette. If there is not, the

CASSETTE PAPER EMPTY signal (CPEP) goes '0', causing the ADD PAPER indicator on the

control panel to go ON.

Figure 5-101

Pick-up roller

SL1

Control ring