Canon Image Reader-A1 iR5000i Service Manual page 514

CHAPTER 8 PAPER DECK
1.2 Pickup
1.2.1 Outline
The paper deck (hereafter deck) is capable of accommodating as many as 3500 sheets of
paper (A/LTR/B5; of 80 g/m²), and is designed to feed paper in response to control signals
from the DC controller of its host machine.
The lifter of the deck is driven by the deck lifter motor (M102), and paper is picked up
and fed using the drive from the deck main motor (M101).
1.2.2 Pickup Operation
The paper inside the deck is held up by the lifter, and is kept in position at a specific point
of pickup.
When the Start key is pressed and, as a result, the deck pickup clutch (CL102) turns on,
the drive of the deck main motor (M101) rotates the pickup roller to pickup paper. At this
time, the pickup/feed roller and the separation roller serve to make sure that only one sheet
of paper is moved forward; then, when the deck pickup sensor (PS101) detects the paper,
the deck pickup roller releasing solenoid (SL101) turns on to move the pickup roller away
from the surface of the paper.
The paper is moved to the registration roller of the host machine, and is made to arch for
removal of the skew.
The registration roller controls the paper so that its leading edge will match the image on
the photosensitive drum.
8-4 P
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001