Canon ImageRunner iR8500 Series, Service Manual, Page: 446 / 1122

Chapter 9
9-42
F-9-49
9.8.9 No-Stacking Operation
0007-0514
iR105i/iR105+ / iR9070 / iR8070
In no-stacking operation, paper after fixing is moved to the holding tray assembly by the delivery flapper and the reversing flapper and, then, is moved to
the lower feeding assembly.
The copier re-orders image pages in its memory for printing, eliminating the need for printing in the order of the originals; as a result, its paper feeding
operation need not be held at rest too long and, consequently, double-sided copies may be made faster. As many as two sheets of paper may exist
simultaneously between the registration sensor and the lower feeding outlet sensor.
T-9-33
Outline of Operations
For instance, no-stacking operation takes place as follows when making one set of doublesided copies of 10 originals.
1. The 1st sheet is picked up from the deck right.
F-9-50
2. The 1st side is printed on the 1st sheet.
The 2nd sheet is picked up.
Related Service Mode
COPIER> DJUST> FEED-ADJ> ADJ-REFE Use it to adjust the image write start position in main
scanning direction for re-pickup.
(-10 to 10 mm)
Motor
driver
(IC3)
+24V
A
A*
B
B*
M12
A4
A3
A2
A5
A1
FU2
A9
A10
A11
A12
A4
A3
A2
A1
J3602 J519 J3603
DUPF-OFF
DUPF-A
DUPF-B
DC controller
PCB
No-stacking feeding
driver PCB
Interface
circuit
Interface
circuit
Interface
circuit
+24V
CPU
(IC13)
Phase-B excitation control signal
Phase-A excitation control signal
When the M12 drive signal goes '1',
the pickup motor starts to rotate.
When the M15 drive signal goes '0',
the pickup motor stops.