Paper Feed, Delivery - Canon PAPER DECK-C1 Service Manual

CHAPTER 2 OPERATION OVERVIEW
B.

Paper Feed, Delivery

1. Paper Feed Operation
The unit causes the lifter to raise the paper to the location where it can be fed, after
which the rotating cassette Pick up roller is lowered to the paper surface to start paper
feed.
Paper feed is only performed when the paper deck driver PCB receives a paper feed
command from the option controller PCB. Then the paper deck motor (SPM1) causes the
Pick up rollers to be lowered to the paper surface. At the same time, the drive motor caus-
es the Pick up rollers to rotate.
The paper feed operation is described below.
The paper deck driver PCB causes the drive motor (SPM1) and the paper feed motor
(SPM3) to rotate when it receives a paper feed command from the option controller PCB.
When the cassette paper feed solenoid (SL1) goes on, drive from the paper deck motor
is transmission via a gear to the cassette paper feed cam that drives the lifting arm. At
the same time, drive motor drive is transmitted to the cassette Pick up roller via the deliv-
ery roller gears. The rotating cassette Pick up rollers are now lowered to the paper sur-
face to feed one paper sheet after which the Pick up rollers are again raised to the posi-
tion where paper can be fed.
When the paper feed motor is in forward rotation mode, the cassette 3 Pick up roller,
delivery roller 1 and the separation roller rotate to feed paper from cassette 3. When it is
in reverse rotation mode, drive is transmitted to the cassette 4 Pick up roller, Pick
up/Feeding roller and the separation roller to feed paper from cassette 4.
Pick up roller
Pick up/
Feeding roller
Separation roller
2-8
COPYRIGHT © 1999 CANON INC.
Paper
Paper feed roller shaft
Paper feed motor drive
Delivery roller gear
Figure 2-203
CANON 2 × 500 SHEET PAPER DECK-C1 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Cassette lifting plate
Cassette paper feed cam
Lifting arm
Lift-up cam
Paper feed roller
shaft fixing arm
Drive motor drive
Gear
Cassette paper feed
solenoid
Lift-up release arm