Duplexing Unit - Canon 1000 Service Manual

D. Duplexing Unit
1. Outline
Paper picked up from the cassette or the multifeeder is forwarded to the delivery vertical path assembly
by the delivery paper deflecting plate after fixing. Thereafter, it is moved through the pre-duplexing feeding
assembly and to the duplexing feeding assembly inside the duplexing unit.
Inside the duplexing feeding assembly, the three paper deflecting plates are shifted to change the paper
path to suit the length of paper for stacking in the duplexing unit stacking assembly (See chapter 3. X.
POWER SUPPLY).
The duplexing stacking assembly heater is mounted to prevent curling of both edges of paper.
Figures 3-620 and -621 show diagrams of the duplexing unit and the operation of the duplexing unit.
Delivery vertical path assembly
Duplexing reversing assembly
SL14
Delivery paper deflecting plate solenoid
Reversing drive clutch
PS35
PS38
CL16
PS32
PS33
Deflecting sheet
M28
Duplexing reversing motor
COPYRIGHT © 2001 CANON INC.
Photosensitive drum
Transfer belt
Pre-holding tray feeding assembly
Figure 3-620
Waste toner
M20
feeding motor
PS8
Figure 3-621
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATION AND TIMING
Photosensitive drum
Photosensitive drum
Bk C M
Duplexing pick-up assembly
Duplexing stacking assembly
Duplexing stacking assembly heater
Pick-up motor
M10

Duplexing unit

pick-up roller clutch
Duplexing
Duplexing pick-up
feeding motor
roller releasing
M19 solenoid
Paper feeding
roller solenoid
PS30
PS9
SL11L SL11R SL11S
Duplexing paper
deflecting plate solenoids
Photosensitive drum
Y

Duplexing unit

Pick-up vertical
path roller 1 clutch
CL11
CL10
SL8
SL13
PS21
PS29 PS31
SL12
Stopper plate solenoid
3-151