Sharp AR-M35 / AR-M450 (serv.man8) Service Manual ▷ View online
AR-350/450 BASIC PAPER TRANSPORT PATH AND PAPER EXIT 3-16
E. Puncher Unit (option:AR-PN1)
(1) Basic Operations
a. Outline
The puncher unit is an option, and is designed for installation to the
pickup assembly of the finisher. The puncher unit is not equipped with a
pickup assembly of the finisher. The puncher unit is not equipped with a
paper feeding mechanism, and the sheets from the host machine move
through the puncher unit and then the feed system of the finisher.
When the trailing edge of a sheet from the host machine reaches the
When the trailing edge of a sheet from the host machine reaches the
puncher unit, the sheet is stopped once, and the punch shaft is rotated to
punch a hole along the trailing edge. These operations are controlled
with various commands from the finisher controller PCB as well as the
with various commands from the finisher controller PCB as well as the
commands from the punch controller PCB.
(2) Punching Operation
a. Outline
The puncher unit is located in the pickup assembly of the finisher, and is
used to punch holes in sheets that have been sent from the host
machine and stopped inside it. When the trailing edge of a sheet reaches
machine and stopped inside it. When the trailing edge of a sheet reaches
the puncher unit, the inlet roller of the finisher assembly stops the sheet
to punch a hole along the trailing edge of the sheet.
The punch unit consists of a die and hole puncher (punch blade).
The punch unit consists of a die and hole puncher (punch blade).
The hole puncher is driven by the punch motor (FPNM). It is attached to
the eccentric cam of the punch shaft, and the rotation of the punch shaft
is converted into reciprocating motion for punching operation.
is converted into reciprocating motion for punching operation.
The punch motor (FPNM) is a DC motor. The home position of the punch
shaft is detected by the punch home position sensor (PI1P). To make
sure that the punch motor, which is a DC motor, stops exactly at its home
sure that the punch motor, which is a DC motor, stops exactly at its home
position, the punch motor is stopped in relation to the count of the clock
pulses kept by the punch motor clock sensor (PE).
A single punching operation is executed by rotating the punch shaft 180×
A single punching operation is executed by rotating the punch shaft 180×
from its home position.
As many as five light-receiving transistors (photosensor PCB) are
mounted over the inlet paper path of the puncher unit; on the other hand,
as many as five LEDs (LED PCB) are mounted under the path, together
as many as five LEDs (LED PCB) are mounted under the path, together
serving as five sensors. The frontmost sensor (LED5, PT5) is used to
detect the training edge of sheets, and the remaining four (LED1 through
LED4, PT1 through PT4) are used as horizontal registration sensors to
LED4, PT1 through PT4) are used as horizontal registration sensors to
detect the rear position of sheets when punching holes.
The punch motor, punch unit, and sensors make up the punch slide unit,
which moves to the front/rear to suit the selected paper size. The
which moves to the front/rear to suit the selected paper size. The
movement to the front/rear is driven by the horizontal registration motor
(FPSM). The home position of the punch slide unit is detected by the
horizontal registration home position sensor (PSHPS), and the horizontal
horizontal registration home position sensor (PSHPS), and the horizontal
registration motor (FPSM) is a stepping motor.
The punch motor and horizontal registration motor are controlled with
various commands from the finisher controller PCB as well as the
various commands from the finisher controller PCB as well as the
commands from the punch controller PCB.
The waste paper occurring as the result of punching is collected in the
waste paper case. The case is monitored by the LED121 on the waste
waste paper case. The case is monitored by the LED121 on the waste
full LED PCB and PT131 on the waste full photosensor PCB.
b. Punching Operation
The hole puncher is driven by the punch motor (FPNM). The home
position for the hole puncher is detected by the punch home position
position for the hole puncher is detected by the punch home position
sensor .
The punch unit comes in four types, selected to suit the country of
installation: 2-hole (Puncher Unit-J1), 2- and 3-hole (Puncher Unit-K1),
installation: 2-hole (Puncher Unit-J1), 2- and 3-hole (Puncher Unit-K1),
or two types of 4-hole (Puncher Unit-G1, Puncher Unit-H1).
The 2-hole and 4-hole types punch a hole when the punch shaft is
rotated 180× from the home position, causing the punch to make a single
rotated 180× from the home position, causing the punch to make a single
round trip. The 2-/3-hole type punches a hole, but the circumference of
the punch shaft is divided into two (half for 2-hole and the other half for
3-hole).
3-hole).
<1>2-Hole, 4-Hole Type
The home position is identified when the punch home position is ON.
The punching operation for the first sheet ends when the punch shaft has
rotated 180× and the punch home position sensor goes ON; the
rotated 180× and the punch home position sensor goes ON; the
punching operation for the second sheet ends when the punch shaft has
rotated 180× in reverse and the punch home position sensor goes ON.
The punching operation takes place as follows when making a hole in
The punching operation takes place as follows when making a hole in
two sheets of paper.
Finisher unit control system
Punch controller PCB
Punch drive system
Horizontal registration
drive system
Punch motor (FPNM) dr
iv
e
signal
Punch controller PCB (1/2)
W
aste full detection signal
(LED121, PT131) DFULL
Punch home position (XXXX)
detection signal PUNCHHP
Hor
iz
ontal registr
ation home position
(PSHPS) detection signal SREGHP
Punch controller PCB (2/2)
Punch motor cloc
k (PE)
detection signal PUNCHCLK
PT1
LED1
2
3
4
5
5
2
3
4
T
railing edge detection signal
(LED5, PT5) P
AEND
Hor
iz
onal registr
ation detection
signal (LED1~4, PT1~4) SREG1~4
Hor
iz
ontal registr
ation motor
(FPSM) dr
iv
e signal
PT131
LED121
) !"#$%
AR-350/450 BASIC PAPER TRANSPORT PATH AND PAPER EXIT 3-17
1) A hole is punched along the trailing edge of the 1st sheet.
2) A hole is made along the trailing edge of the 2nd sheet.
<2>2- /3-Hole Type
The home position is identified when the punch home position sensor is
ON. To make two holes, the punching operation for the first sheet ends
ON. To make two holes, the punching operation for the first sheet ends
when the punch shaft rotates 180° (half circumference) and the punch
home position sensor goes ON. At this time, the 3-hole puncher makes a
single round trip in escape direction (moving up the hole puncher) on a
half circumference of the punch shaft.
half circumference of the punch shaft.
The punching operation for the second sheet ends when the Punch shaft
has rotated 180° counterclockwise and the punch home position sensor
goes ON (half circumference). At this time, the 3-hole puncher makes a
goes ON (half circumference). At this time, the 3-hole puncher makes a
single round trip in escape direction (moving up the hole puncher) on the
other half circumference of the punch shaft.
The punching operation takes place as follows when making two holes in
The punching operation takes place as follows when making two holes in
two sheets of paper:
1) A hole is made along the trailing edge of the 1st sheet.
While two holes are being made, the 3-hole puncher makes a single
round trip in escape direction.
round trip in escape direction.
2) Holes are made along the trailing edge of the 2nd sheet.
While two hole are being made, the 3-hole puncher makes a single round
trip in escape direction (moving up the hole puncher).
c. Horizontal Registration Operation
The horizontal registration drive for the punch slide unit is provided by
the horizontal registration motor (FPSM). The home position of the
the horizontal registration motor (FPSM). The home position of the
punch slide unit is detected by the horizontal registration home position
sensor (PSHPS). The punch slide unit detects the trailing edge of sheets
using the trailing edge sensor (LED5, PT5) and the horizontal
using the trailing edge sensor (LED5, PT5) and the horizontal
registration sensors (LED1 through 4, SREG1 through 4), and causes a
move to a specific position matching the trailing edge of each sheet
(in relation to the size of the sheet).
(in relation to the size of the sheet).
The horizontal registration operation takes place as follows:
1) When the leading edge of a sheet from the host machine is detected
by the trailing edge sensor (LED5, PT5), the horizontal registration
motor (FPSM) starts to move the punch slide unit toward the front.
motor (FPSM) starts to move the punch slide unit toward the front.
(punch shaft at rest/
home position)
(punch shaft CCW rotation
by 90˚/hole made)
(punch shaft CCW rotation by 180˚/
end of punching operation)
(punch shaft at rest/
home position)
(punch shaft CCW rotation
by 90˚/hole made)
(punch shaft CCW rotation by 180˚/
end of punching operation)
(punch shaft at rest/
home position)
(punch shaft CW rotation
by 90˚/hole made)
(punch shaft CW rotation by 180˚/
end of punching operation)
Sensor flag
Punch home position
sensor (PI1P)
Punch shaft
Eccentric cam
Hole
puncher
Die
Die
Paper
Waste paper
(punch shaft at rest/
home position)
(punch shaft CW rotation by 90˚/
punch at upper limit)
(punch shaft CW rotation by 180˚/
punch back to initial position)
(punch shaft at rest/
home position)
(punch shaft CCW rotation
by 90˚/hole made)
(punch shaft CCW rotation by 180˚/
end of punching operation)
(punch shaft CCW rotation by
90˚/punch at upper limit)
(punch CCW rotation by 180˚/
punch back at initial position)
(punch shaft at rest/
home position)
Horizontal registration
motor (M2P)
motor (M2P)
(direction of
paper delivery)
Punch slide unit
Trailing edge sensor
(LED5, PT5)
Paper
* !"#$%
AR-350/450 BASIC PAPER TRANSPORT PATH AND PAPER EXIT 3-18
2) When the horizontal registration sensor (LED1 through 4, PT1
through) suited to the paper size signal from the host machine
detects the rear edge of the sheet, the horizontal registration motor
(FPSM) causes a farther move to a specific position, and stops the
punch slide unit.
punch slide unit.
3) When the trailing edge sensor (LED5, PT5) detects the trailing edge
of the sheet, the drive of the feed motor (FFM) is stopped, thereby
stopping the sheet. Then, the punch motor (FPNM) is driven to
stopping the sheet. Then, the punch motor (FPNM) is driven to
punch holes in the sheet.
4) When the punching operation ends, the feed motor (FFM) of the
fisher unit is driven and, at the same time, the horizontal registration
motor (FPSM) is rotated in reverse to return the punch slide unit to its
home position.
5) For each sheet that arrives in succession, the punch slide unit is
returned to its home position, and is caused to repeat steps 1
through 4 .
d. Stapling position quick reference guide for duplex output
The orientation of the copy paper, original, scanned original data, and
binding position selection are all interrelated.
binding position selection are all interrelated.
The table below shows these relationships.
e. Relation between print image and saddle stitch
The orientation of the copy paper, original, scanned original data, and
binding position selection are all interrelated.
The table below shows these relationships.
Note: Transparency film, labels , envelopes and postcards cannot be
stapled.
Note: If mixed paper sizes are selected for stapling jobs, stapling will be
automatically canceled.
Horizontal registration sensor (LED1, PT1);
used to detect the edge of sheets of A3, A4,
LTR, 279
used to detect the edge of sheets of A3, A4,
LTR, 279
×432 (11"×17").
Horizontal registration sensor 2 (LED2, PT2);
used to detect the edge of sheets of B4, B5,
LTRR, LGL.
used to detect the edge of sheets of B4, B5,
LTRR, LGL.
Horizontal registration sensor 3 (LED3, PT3);
used to detect the edge of sheets of A4R.
used to detect the edge of sheets of A4R.
Horizontal registration sensor 4 (LED4, PT4);
used to detect the edge of sheets of B5R.
used to detect the edge of sheets of B5R.
Punch
: CW rotation
: CCW rotation
Feed motor (FFM)
Trailing edge sensor
(LED5, PT5)
(LED5, PT5)
Horizontal registration
sensor (LED1~4, PT1~4)
sensor (LED1~4, PT1~4)
Punch home position
sensor
sensor
Horizontal registration home
position sensor (PSHPS)
position sensor (PSHPS)
Horizontal registration
motor (FPSM)
motor (FPSM)
Punch motor (FPNM)
Orientation of original or original data
Output result
Page 1
Page 2
Page 1 & Page 2
Duple xed
One-position stapling
Two-position stapling
One-position stapling
Two-position stapling
One-position stapling
Two-position stapling
Two-position stapling
One-position stapling
One-position stapling
One-position stapling
Left binding with two-position
stapling cannot be made.
stapling cannot be made.
Right binding with two-
position stapling cannot be
made.
position stapling cannot be
made.
Top binding with two-position
stapling cannot be made.
stapling cannot be made.
Two-position stapling along
the shorter edge cannot be
made.
the shorter edge cannot be
made.
Two-position stapling along
the shorter edge cannot be
made.
the shorter edge cannot be
made.
Two-position stapling along
the shorter edge cannot be
made.
the shorter edge cannot be
made.
Right binding
Right binding
T
o
p binding
T
o
p binding
Left binding
Left binding
P
o
rtrait orientation printing
Landscape orientation printing
Same as abo ve
Orientation of original or original data
Output result
Page 1
Page 3
Page 2
Page 4
Page 1 & Page 2
Duple xed
Page 3 & Page 4
Duple xed
Right binding
Left binding
P
o
rtrait orientation printing
Landscape orientation printing
Page 1
Page 3
Page 2
Page 4
Page 1 & Page 2
Duple xed
Page 3 & Page 4
Duple xed
+ !"#$%
AR-350/450 BASIC FUSING SECTION 4-1
[4] FUSING SECTION
1. Composition of fusing section
2. Cleaning roller
The fusing cleaning roller of this machine is made of metal.
1) Remaining toner attaches to the upper heat roller.
1) Remaining toner attaches to the upper heat roller.
2) Due to coating and the temperature characteristics of the upper heat roller, toner is not attached to the upper heat roller but to the lower heat roller.
3) Remaining toner on the lower heat roller is further attached to the cleaning roller due to the temperature characteristics and the difference in
roughness of surfaces of the rollers.
4) Remaining toner attached to the cleaning roller is accumulated until the roller is replaced.
1
Heater lamp 1
Generates heat and transmits heat to the heat roller.The temperature is controlled by the thermistor.
(Temperature control is made mainly on both sides.)
(Temperature control is made mainly on both sides.)
2
Heater lamp 2
Generates heat and transmits heat to the heat roller.The temperature is controlled by the thermistor.
(Temperature control is made mainly on the center.)
(Temperature control is made mainly on the center.)
3
Upper heat roller
Transmits heat to melt toner on paper and fuse toner by means of a pressure with the lower heat roller.
4
Lower heat roller
Fuses toner on paper by means of a pressure with the upper heat roller.
To improve fusing capability, the diameter is greater than the conventional ones. (ø30mm
To improve fusing capability, the diameter is greater than the conventional ones. (ø30mm
→
ø40mm)
5
Fusing upper separation pawl
Prevents winding of paper around the upper heat roller.
6
Fusing lower separation pawl
Prevents winding of paper around the lower heat roller.
7
Thermistor (Center)
Detects the surface temperature of the upper heat roller.
(On/off of heater lamp 1 is controlled according to the detected temperature.)
(On/off of heater lamp 1 is controlled according to the detected temperature.)
8
Thermistor (Side)
Detects the surface temperature of the upper heat roller.
(On/off of heater lamp 2 is controlled according to the detected temperature.)
(On/off of heater lamp 2 is controlled according to the detected temperature.)
9
Thermostat
When an abnormal temperature of the upper heat roller is detected, the heater lamp power is interrupted.
To supply power again, press the switch on the top.
To supply power again, press the switch on the top.
10
Cleaning roller
Cleans toner on the lower heat roller. Made of metal.
!"#$%
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