Sharp AR-F11 (serv.man3) Service Manual ▷ View online
2-36
CHAPTER 2 FINISHER UNIT BASIC OPERATION
b.
Rear 1-Point Stapling
The stapler is kept in wait at the center position. The stapler is moved to and from the stapling
position for each stapling operation.
Stopper
Stapling position
Wait position
Stapler
Stopper
Guide plate
Stapling tray delivery
direction
direction
Figure 2-236
c.
Rear Diagonal Stapling
For A4, LT and B5 sizes, the stapler is kept in wait toward the rear away from the stapling
position. The stapler is moved to and from the stapling position for each stapling operation.
Stapler
Wait position
Stapling position
Stopper
Stopper
Guide plate
Stapling tray delivery
direction
direction
Figure 2-237
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
d.
2-Point Stapling
The stapler is kept in wait at the center of the paper. Stapling occurs at two points, first at the rear
and then at the front.
Stapling tray delivery
direction
direction
Stopper
Stapling position
Wait position
Stapler
Stapling position
Stopper
Guide plate
Figure 2-238
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
G.
Tray Operation
The finisher has two delivery trays-upper tray 1 and lower tray 2. The upper and lower trays
move up and down independently.
Tray 1 is moved up and down by the tray 1 lift motor (M5), and tray 2 by the tray 2 lift motor
(M10).
The tray 1 position is detected by counting the clock pulses of tray 1 lift motor clock sensors 1
and 2 (PI9 and PI19) in relation to the tray 1 home position sensor (P18). The tray 2 position is
detected by counting the clock pulses of tray 2 lift motor clock sensors 1 and 2 (PI23 and PI24) in
relation to the tray 2 home position sensor (PI25).
detected by counting the clock pulses of tray 2 lift motor clock sensors 1 and 2 (PI23 and PI24) in
relation to the tray 2 home position sensor (PI25).
When the tray is already at the home position, it is moved away from the home position once,
then returned to that position.
When both tray 1 and tray 2 are at the home position, the above operation is performed for tray 1
and tray 2 in this order.
The finisher controller PCB moves up and down the tray selected by the host machine so that it
is positioned at the delivery slot.
The upper limit of the tray is detected by the tray coming close detecting switch (MS9). The
finisher controller PCB stops the drive (up) of the tray 1 lift motor (M5) as soon as the tray upper limit
detecting switch turns on.
detecting switch turns on.
The height of the stack on the tray is identified by the height sensor (PS1), which measures its
distance from the top of the stack. The tray is moved down when the distance between the top of the
stack and the delivery assembly drops to a specific measurement.
stack and the delivery assembly drops to a specific measurement.
The finisher controller PCB cuts off the +24V power of the tray 1 lift motor (M5) as soon as the
safety zone switch (MS3) turns on while the shutter and the swing guide are open, stopping the
operation of the finisher.
operation of the finisher.
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
Tray 1 lift
motor clock
sensor / and 2
motor clock
sensor / and 2
Tray 1 lift
motor
motor
Tray coming close
detection switch
detection switch
Rack
One way
gear
gear
Tray 2 lift motor
clock sensor / and 2
clock sensor / and 2
Tray 2 lift
motor
motor
One way
gear
gear
Figure 2-239
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