Canon 1000 Service Manual page 196

3. OPERATION AND TIMING
2. Stacking for Two-Sided Copies
When fixing is finished on the first side of paper, the delivery paper deflecting plate (SL14) turns on to
shift the delivery paper deflecting plate so that it moves the paper through the delivery vertical path assembly
to the duplexing reversing assembly.
When the trailing edge of paper moves past the delivery vertical path sensor (PS32) and a specific
period of time passes, the duplexing reversing assembly inlet roller starts to rotate in reverse. The paper then
moves to the pre-holding tray feeding assembly through the feeding path that occurs when the deflecting
sheet, which has been pressed down by the paper, returns to its original position.
The above operation reverses the paper.
The pick-up roller inside the holding tray (duplexing unit) moves up by the drive from the duplexing unit
pick-up solenoid (SL8); the stopper plate, on the other hand, shifts up by the drive of the duplexing unit
stopper plate solenoid (SL18).
The above condition is maintained until paper arrives.
When paper is brought to the duplexing unit stacking assembly by the drive of the duplexing feeding
motor (M19), the feeding roller lowers to butt the paper against the stopper plate.
When the last paper has been stacked, the stopper plate is shifted down, and then the pick-up roller
starts pick-up operation for the second side. See Figures 3-622 and -623 for an outline of stacking operation
for two-sided copies.
If an error occurs in the rotation of the duplexing feeding motor, 'E017' will be indicated on the control
panel.
Delivery paper
SL14
deflecting solenoid
Reversal
PS35
drive clutch
PS38
CL16
PS32
PS33
Deflecting sheet
M28 Duplexing reversing motor
3-152
COPYRIGHT © 2001 CANON INC.
Waste toner
M20
feeding motor
PS8
Figure 3-622
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Duplexing pick-up
roller releasing solenoid
Feeding roller
solenoid
PS30
PS9
SL8
SL13
PS21
PS29 PS31
SL12
Stopper plate solenoid