Sharp AR-F11 (serv.man3) Service Manual ▷ View online
2-24
CHAPTER 2 FINISHER UNIT BASIC OPERATION
E.
Staple Operation
1.
Outline
The stapler unit staples a stack of as many sheets as specified.
The stapling position differs according to the selected staple mode and paper size.
The stapler unit is checked by the stapler shift home position sensor (PI7) to find out whether it is
The stapling position differs according to the selected staple mode and paper size.
The stapler unit is checked by the stapler shift home position sensor (PI7) to find out whether it is
at the home position.
When starting operation after power-on, the finisher controller PCB drives the stapler shift motor
(M4) to return the stapler unit to the home position. If the stapler is already at the home position, it is
kept as it is in wait.
kept as it is in wait.
Sheets
Stapler shift home
position sensor (PI7)
position sensor (PI7)
Stapler shift
motor (M4)
motor (M4)
Stapler
Figure 2-223
2-25
CHAPTER 2 FINISHER UNIT BASIC OPERATION
Front diagonal stapling
2-point stapling
Paper width/2
Rear diagonal stapling
Rear 1-point stapling
Figure 2-224
2-26
CHAPTER 2 FINISHER UNIT BASIC OPERATION
2.
First Sheet
The finisher controller PCB stops the delivery motor (M2) as soon as the trailing edge of the first
sheet has moved past the feed roller 2. Then, it rotates the delivery motor clockwise to switch the gear
drive to the swing motor (M7), causing the swing guide to move up. When the swing guide open
sensor (PI18) finds the swing guide at the up position, the swing motor stops, maintaining the swing
guide at the up position.
drive to the swing motor (M7), causing the swing guide to move up. When the swing guide open
sensor (PI18) finds the swing guide at the up position, the swing motor stops, maintaining the swing
guide at the up position.
When the swing guide has moved up, the knurled belts of the feed roller 2 move the sheet to the
stapling tray. (The first sheet is fed to the stapling tray while the swing guide is moving up.) The
presence of paper on the stapling tray is detected by the stapling tray sensor (PI4).
presence of paper on the stapling tray is detected by the stapling tray sensor (PI4).
The finisher controller PCB drives the alignment motor (M3) when the stapling tray paper sensor
has detected paper to put sheets in order. The alignment plate is kept in wait in advance at a point 10
mm behind the trailing edge of the paper.
mm behind the trailing edge of the paper.
The swing guide is kept in wait at the up position until the last sheet is output onto the stapling
tray.
Swing guide
First sheet
Tray 1/2
Delivery roller
Stapling tray
Feed roller 2
Knurled belts
Stapler
Figure 2-225
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CHAPTER 2 FINISHER UNIT BASIC OPERATION
Swing guide
Swing guide open
sensor (PI18)
sensor (PI18)
Swing guide closed
detecting switch 1,2
(MS2/MS6)
detecting switch 1,2
(MS2/MS6)
Delivery roller
Swing motor
clock sensor
(PI20)
clock sensor
(PI20)
Delivery motor
clock sensor
(PI10)
clock sensor
(PI10)
Delivery motor (M2)
Swing motor (M7)
Figure 2-226
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