Canon Vizcam 1000, Service Manual

Page: 182 / 840

3. OPERATION AND TIMING
COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-138
3. Multifeeder Pick-Up Assembly
a. Operation
The multifeeder pick-up assembly is constructed as shown in Figure 3-608.
The multifeeder is a mechanism that picks up paper from a stack on its tray for continuous feeding.
As many as 250 sheets of paper (80 g/m
2 ) may be stacked on the tray.
The paper on the tray is detected by the multifeeder paper sensors (PS4, PS5).
When the Start key is pressed, the stack of paper is raised to the pick-up position by the multifeeder lifter
motor (M1).
The pick-up roller is rotated by the drive of the pick-up motor (M10) for pick-up of paper.
Then, the multifeeder pick-up roller releasing solenoid (SL5) turns on, moving the pick-up roller away
from the surface of the paper.
A single sheet of paper is moved by the feeding roller and the separation roller to the registration roller by
way of the paper thickness detecting roller.
The CLC1000 checks the thickness of paper when picking it up from the multifeeder, thereby identifying
it as being plain or thick. (For transparencies, see “4. Picking Up Transparencies.”)
Figure 3-608
SL16
Registration releasing
solenoid
Registration roller
Transparency sensor
(OHPS)
Paper thickness
detecting roller
Registration
paper sensor
(PS1)
Multifeeder
separation roller
Multifeeder
feeding roller
M1
Multifeeder
lifter motor
Multifeeder pick-up
roller releasing solenoid
Multifeeder
pick-up roller
SL5
Registration roller
clutch
CL8 CL7 CL6
Multifeeder
pick-up clutch
M10
Pick-up motor
Paper thickness
detecting roller
clutch
Sensor
lever