Feeding Operations; Outline - Canon CLC5000 Service Manual

CHAPTER 2 NEW FUNCTIONS

9.3 Feeding Operations

9.3.1 Outline

The feeding operations consist of the following two:
• Sending the paper coming from the copier to the sorter
• Turning over the paper coming from the copier and then sending it to the sorter
The feeder roller and the sponge roller are driven by the buffer pass motor (M1, M3). The
sponge roller and the pressure roller pick paper and then flattens it out to remove curl. (The
feeding speed is controlled by the buffer pass motor.)
Paper inside the buffer pass unit is detected as follows:
• If the paper is not to be turned over, the inlet paper sensor (PS8) is used to detect paper.
• If the paper is to be turned over, reversal timing sensor (PS1) and the reversal jam sensor
(PS2) are used to detect paper.
When reversal does not take place, the flapper is always positioned for straight pickup.
The sequence and outlines of oparation at time of reversal pickup and straight pickup are
shown in following page.
1. When Not Turning Over the Paper
M1 M3
Spring clutch
Pressure roller
2-212
PS4
PS5
Upward curl
removing roller
Pressure
roller
Feeding
Downward curl
removing roller
COPYRIGHT © 2001 CANON INC.
Upward curl removing
solenoid 1 drive signal
SL5
Upward curl removing
solenoid 2 drive signal
SL6
Buffer pass motor drive signal
Upward curl phase
detection signal 1
Upward curl phase
detection signal 2
Paper detection signal
PS8
roller
Flapper
F02-903-01
2000 2000 2000 2000
Buffer pass
driver PCB
CANON CLC5000 REV.0 JAN. 2001