Sharp AR-F16 (serv.man2) Service Manual ▷ View online
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.
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.
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.
point 10 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
2-27
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
2-28
CHAPTER 2 FINISHER UNIT BASIC OPERATION
3.
Second and Subsequent Sheets
The finisher controller PCB turns on the belt escape solenoid (SL7) before the trailing edge of
the second and subsequent sheets have moved past the feed roller 2 to make the knurled belt escape.
This operation is performed to reduce the time it takes for the trailing edge of the paper to fall on the
stapling tray, and to improve the product duty. The finisher controller PCB turns on the paddle
solenoid (SL5) as soon as the trailing edge of the second and subsequent sheets have moved past the
feed roller 2, causing the drive of the second feed motor (M8) to rotate the paddle. The sheets are
pushed by the paddle and moved to the stapling tray. Almost simultaneously with the trailing edge
of the sheet falling into the stapling tray, the belt escape solenoid turns off to return the knurled belts
that were in the escape position to its original position, and feed the sheet onto the stapling tray.
When the sheet has been output onto the stapling tray, the finisher controller PCB rotates the align-
ment motor (M3) to put the sheets in order.
This operation is performed to reduce the time it takes for the trailing edge of the paper to fall on the
stapling tray, and to improve the product duty. The finisher controller PCB turns on the paddle
solenoid (SL5) as soon as the trailing edge of the second and subsequent sheets have moved past the
feed roller 2, causing the drive of the second feed motor (M8) to rotate the paddle. The sheets are
pushed by the paddle and moved to the stapling tray. Almost simultaneously with the trailing edge
of the sheet falling into the stapling tray, the belt escape solenoid turns off to return the knurled belts
that were in the escape position to its original position, and feed the sheet onto the stapling tray.
When the sheet has been output onto the stapling tray, the finisher controller PCB rotates the align-
ment motor (M3) to put the sheets in order.
SL7
Swing guide
Second and
subsequent
sheets
subsequent
sheets
Paddles
Feed roller 2
Knurled belts
Belt escape solenoid
Tray 1/2
Delivery
roller
roller
Stapling tray
Stapler
Figure 2-227
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