Sharp AR-F11 (serv.man3) Service Manual ▷ View online
2-20
CHAPTER 2 FINISHER UNIT BASIC OPERATION
PI1
PI14
PI17
PI4
PI3
PI11
PI12
No. 2 tray paper detection signal SNDTRA
Y
No. 1 tray paper detection signal FSTTRA
Y
Stapling tray paper detection signal STPTY
Buf
fer path paper
detection signal B
UFP
ASS
Deli
v
ery detection signal PDEL
Buf
fer path inlet paper
detection signal B
UFENTR
Inlet paper detection signal PENT
Finisher controller PCB
Figure 2-217
2-21
CHAPTER 2 FINISHER UNIT BASIC OPERATION
D.
Job Offset
1.
Outline
In the job offset mode, sort jobs and entire copy groups are shifted to the front for delivery to the
tray, and other copies are delivered to the tray without a shift.
The copies are shifted by the alignment plate. The alignment plate is checked by the alignment
plate home position sensor (PI6) to find out whether it is at the home position.
The finisher controller PCB drives the alignment motor (M3) at power-on to return the alignment
plate to its home position.
The finisher controller PCB stops the delivery motor (M2) when the trailing edge of the copy has
moved past the feed roller 2. Then, the finisher controller PCB rotates the delivery motor counter-
clockwise, and drives the swing motor (M7). As a result, the drive of the delivery motor is transmitted
to the swing guide to move up the guide. When the swing guide open sensor (PI18) detects the swing
guide, the delivery motor stops, and the swing guide is held at the up position.
clockwise, and drives the swing motor (M7). As a result, the drive of the delivery motor is transmitted
to the swing guide to move up the guide. When the swing guide open sensor (PI18) detects the swing
guide, the delivery motor stops, and the swing guide is held at the up position.
When the swing guide has moved up, the feed belts attached to the feed roller 2 move the copy to
the stapling tray. The presence of paper on the stapling tray is monitored by the stapling tray sensor
(PI4). (The first sheet is fed to the stapling tray while the swing guide is moving up.)
(PI4). (The first sheet is fed to the stapling tray while the swing guide is moving up.)
The finisher controller PCB drives the alignment motor (M3) in advance, and keeps the align-
ment plate in wait at a point 10 mm behind the trailing edge of a sheet. Whenever one sheet is moved
to the stapling tray, each sheet is aligned, and when the fifth or last sheet in a sort job/group is fed to
the stapling tray, the escape solenoid (SL6) moves the guide plate away and under the stapling tray.
From then on, the alignment motor shifts the sheets to the front by 30 mm.
to the stapling tray, each sheet is aligned, and when the fifth or last sheet in a sort job/group is fed to
the stapling tray, the escape solenoid (SL6) moves the guide plate away and under the stapling tray.
From then on, the alignment motor shifts the sheets to the front by 30 mm.
When the copy has been shifted, the finisher controller PCB rotates the alignment motor counter-
clockwise to move the alignment plate to a point 10 mm behind the trailing edge of the sheet. This
alignment operation is repeated until alignment of the fifth or last sheet in a sort job is completed. At
this time, the swing guide is moved down and is closed, and the delivery motor rotates clockwise to
deliver the sheet.
alignment operation is repeated until alignment of the fifth or last sheet in a sort job is completed. At
this time, the swing guide is moved down and is closed, and the delivery motor rotates clockwise to
deliver the sheet.
2-22
CHAPTER 2 FINISHER UNIT BASIC OPERATION
Guide plate
Escape solenoid
(SL6)
Paper
Alignment plate
Alignment plate
home position sensor (PI6)
Alignment motor (M3)
Figure 2-218
Sequence of Operation (job offset)
Delivery motor (M2)
First feed motor (M1)
Inlet sensor (PI1)
Start signal
Host machine delivery signal
Host machine delivery signal
Delivery sensor (PI3)
Staple tray sensor (PI4)
Second feed motor (M8)
Alignment motor (M3)
Alignment plate home
position sensor (PI6)
position sensor (PI6)
Swing guide open
sensor (PI18)
Swing guide closed
detecting switch 1 (MS2)
sensor (PI18)
Swing guide closed
detecting switch 1 (MS2)
Swing motor (M7)
Inlet feed motor (M9)
Escape solenoid (SL6)
: Motor CW rotation
: Motor CCW rotation
Figure 2-219
2-23
CHAPTER 2 FINISHER UNIT BASIC OPERATION
2.
Flow of Job Offset Operations
1) The swing guide moves up and, at the same time, the feed belts move the sheet to the stapling
tray.
Offset sheet
Swing guide
Tray 1/2
Delivery
roller
roller
Stapling tray
Feed roller 2
Knurled belts
Stopper
Figure 2-220
2) The alignment plate shifts the sheet to the front.
Existing stack
Alignment plate
Offset sheet
Figure 2-221
3) The swing guide moves down and, at the same time, the delivery roller delivers the sheet.
Offset sheet
Swing guide
Feed roller 2
Knurled belts
Tray 1/2
Delivery
roller
roller
Stapling tray
Stopper
Figure 2-222
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