Shutter Operation - Canon Staple Finisher-D1 Service Manual

2
Technology > Stack Tray Unit > Shutter Operation
Tray 1 Paper Sensor
Tray 1
Escape Tray
Tray 2
Tray 2 Paper Surface Sensor
Detected items
Tray 1 upper limit
Stack count 650 sheet limit exceeded
Stack count 1300 sheet limit exceeded
Tray 1 lower limit
Detected items
Tray 2 upper limit
Stack count 650 sheet limit exceeded
Stack count 1700 sheet limit exceeded
Stack count 2450 sheet limit exceeded
Tray 2 lower limit (finisher)
Tray 2 lower limit (saddle finisher)
* The symbol for the area sensor of each PCB is same because tray 1/tray 2 shift area sensor
PCBs are the same board.
2 Technology > Stack Tray Unit > Shutter Operation
Sensor
Tray 1 shift area sensor PCB
F-2-19 F-2-19
Area sensor 1 Area sensor 2 Area sensor 3
(S122) (S123) (S124)
OFF ON ON
ON OFF OFF
ON ON OFF
ON ON OFF
Tray 2 shift area sensor PCB
Area sensor 1 Area sensor 2 Area sensor 3
(S125) (S126) (S127)
OFF ON OFF
ON OFF OFF
ON ON ON
OFF ON ON
ON OFF ON
OFF OFF ON

Shutter Operation

When tray 1 passes the delivery section with paper already stacked, the stacked paper may
get caught by the delivery section. A shutter is provided at the delivery section to prevent this.
The shutter closes when tray 1 passes the delivery section. This is performed even when no
paper is stacked.
When the shutter clutch (CL102) and shutter close detection sensor (S148) are ON, the
shutter moves up (close) when the stack ejection motor (M122) turns forward and moves
down (open, delivery enabled) when the motor turns backward.
The open/close of the shutter is detected by the shutter home position sensor (S106).
Stack Delivery Lower/
Shutter Motor
T-2-6 T-2-6
Shutter Close Detection Sensor
Shutter
Shutter Clutch
F-2-20 F-2-20
2-14
2-14