Switching Paper Sizes For Two-Sided/Overlay/Reversal Delivery Copies; Movement Of The Paper Size Guide - Canon NP6045 Service Manual

CHAPTER 5 PICK-UP/FEEDING SYSTEM
E. Switching Paper Sizes for Two-Sided/Overlay/Reversal
Delivery Copies

1. Movement of the Paper Size Guide

When the Copy Start key is pressed in two-sided/overlay/reversal delivery copy
mode, the holding tray (X, Y) motor (M8, M9) starts to rotate clockwise, and the paper
size guide moves in the direction of the arrow (Figure 5-614).
When the light-blocking plate of the paper size guide blocks the holding tray (X, Y)
home position sensor (PS21, PS20), the motor (M8, M9) stops.
Then, the DC controller PCB sends a specific number of pulses to represent the size
of the copy paper being used to the motor (M8, M9).
The motor, in response, rotates counterclockwise to move the paper size guide to the
position appropriate to the copy size to wait for the arrival of copy paper.
While the second side is being copied, the motor (M8, M9) remains at rest; it remains
at rest until the first side of the next copy is copied.
5-30
COPYRIGHT © 1997 CANON INC.
DC controller PCB
Holding tray
M8
X motor
CW direction
Reverse direction
Paper size
guide plate
Figure 5-614
CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Holding tray
M9
Y motor
Light-blocking
plate
Rear guide plate
PS21
PS20