Outline Of Through-Path Operation; Through-Path Operation - Canon iR6570 series Service Manual

Chapter 8
A4, 4 Originals, Duplexing
Pickup motor (M2)
Claw jam sensor
(PS4)
Fixing outlet sensor
(PS52)
Inside delivery sensor
(PS35)
Delivery flapper
solenoid (SL5)
Reversal motor (M14)
Reversal sensor 2
(PS38)
Reversal flapper
solenoid (SL8)
Reversal sensor 1
(PS37)
Duplexing feed left
motor (M29)
Duplexing feed right
motor (M18)
Duplexing paper
sensor (PS34)
Duplexing pre-
registration sensor(PS30)
Vertical path duplexing
feed motor (M25)
Horizontal registration
sensor (PS31)

8.8.5 Outline of Through-Path Operation

The through-path mechanism is used to move paper to the duplexing feed assembly after fixing (and after the paper has been moved to the reversing
assembly by the work of the reversing flapper).
The machine is designed to reorder pages in its memory for printing, being free of the need to print originals in sequence and being, therefore, able to
reduce the time during which paper is kept on hold, ultimately bringing about faster duplexing operation. As many as 2 sheets of paper may exist at once
between the registration sensor and the duplex paper sensor.
SERVICE MODE:
COPIER> ADJUST> FEED-ADJ> ADJ-REFE
Use it to adjust the write start position in main scanning direction at time of re-pickup.
(-50 to 50 mm)

8.8.6 Through-Path Operation

The following cites through-path operation when making duplex prints of 10 originals:
1. The 1st sheet is picked up from the right deck.
2. The 1st side is printed on the 1st sheet.
The 2nd sheet is picked up.
8-28
Original placed in ADF
Start key ON or PRINT setting recognized
face of 1st sheet back of 2nd sheet
printed printed
Pulled in Pushed out Pulled in Pushed out
[1]
[2]
[1] stops for arching at the duplexing feed right roller.
[2] stops to control the sheet-to-sheet distance at the duplexing wait point.
F-8-30
F-8-31
back of 1st sheet
back of 2nd
printed
sheet printed
[1]
[2]
0009-3187
0009-3188