Sharp MX-RBX1 (serv.man2) Service Manual ▷ View online
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 11
b. Stitching
When the center of the paper stack (stitching position) reaches the
stapler's staple position, the stapler stitches the paper stack.
When only one sheet is fed from the host machine, the next step
(stack feed) is performed without performing the stitching opera-
tion.
When the center of the paper stack (stitching position) reaches the
stapler's staple position, the stapler stitches the paper stack.
When only one sheet is fed from the host machine, the next step
(stack feed) is performed without performing the stitching opera-
tion.
c. Stack feed
The stack feed rollers feed the paper stack to the stack folding/
delivery position where the center of the stack (stitched position) is
level with the paper pushing plate and paper folding roller's nip part.
The stack feed rollers feed the paper stack to the stack folding/
delivery position where the center of the stack (stitched position) is
level with the paper pushing plate and paper folding roller's nip part.
d. Folding/delivery
The paper pushing plate pushes in the center of the paper stack to
feed it toward the paper fold rollers. Then, the paper fold rollers and
bind delivery rollers deliver the paper stack to the bind tray.
The paper pushing plate pushes in the center of the paper stack to
feed it toward the paper fold rollers. Then, the paper fold rollers and
bind delivery rollers deliver the paper stack to the bind tray.
C. Paper Feed System
(1) Outline
The paper feed system feeds a stack of sheets (coming from the
finisher) to the position where the center of the paper stack (stitch-
ing position) is aligned to the stapler's staple, allowing the next step
(stitching and folding) to be performed.
When sheets of paper have been stacked and aligned on the pro-
cessing tray, the paddle motor (FPM) rotates in the reverse direc-
tion, causing the swing guide to descend. As the swing guide
descends, the paper stack is sandwiched between the upper and
lower stack delivery rollers. The stack delivery motor (FAM) rotates
in the reverse direction, feeding the paper stack toward the saddle
unit. When the leading edge of the paper stack reaches the binding
position sensor (FFPD), the finisher controller PCB drives the stack
delivery motor (FAM) a specified number of motor pulses to stop
the center of the paper stack (stitching position) at the stapler's sta-
ple position. Before the paper stack passes through the stack feed
rollers, the feed motor (FFM) is driven to rotate the stack feed roller
(lower) so that the leading edge of the paper stack is not bent.
finisher) to the position where the center of the paper stack (stitch-
ing position) is aligned to the stapler's staple, allowing the next step
(stitching and folding) to be performed.
When sheets of paper have been stacked and aligned on the pro-
cessing tray, the paddle motor (FPM) rotates in the reverse direc-
tion, causing the swing guide to descend. As the swing guide
descends, the paper stack is sandwiched between the upper and
lower stack delivery rollers. The stack delivery motor (FAM) rotates
in the reverse direction, feeding the paper stack toward the saddle
unit. When the leading edge of the paper stack reaches the binding
position sensor (FFPD), the finisher controller PCB drives the stack
delivery motor (FAM) a specified number of motor pulses to stop
the center of the paper stack (stitching position) at the stapler's sta-
ple position. Before the paper stack passes through the stack feed
rollers, the feed motor (FFM) is driven to rotate the stack feed roller
(lower) so that the leading edge of the paper stack is not bent.
D. Stack Feed System
(1) Outline
The stack feed system feeds the stitched paper stack to the folding
position.
When stitching is complete, the feed motor (FFM) rotates, causing
the stack feed roller (upper) to descend. The paper stack is sand-
wiched between the stack feed rollers. Then, the bind clutch (FFC)
is turned ON to rotate the feed motor (FFM) in the forward direc-
tion, thus feeding the paper stack to the folding position. The feed
amount is equivalent to the number of pulses used to drive the feed
motor (FFM) until the paper stack reaches the folding position.
position.
When stitching is complete, the feed motor (FFM) rotates, causing
the stack feed roller (upper) to descend. The paper stack is sand-
wiched between the stack feed rollers. Then, the bind clutch (FFC)
is turned ON to rotate the feed motor (FFM) in the forward direc-
tion, thus feeding the paper stack to the folding position. The feed
amount is equivalent to the number of pulses used to drive the feed
motor (FFM) until the paper stack reaches the folding position.
Staple
Stapler (lower)
Stapler (upper)
Paper fold roller
Paper pushing plate
Stack feed roller (upper)
Stack feed roller (lower)
Paper fold rollers
Bind delivery rollers
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
Stack feed roller (lower)
Fold position sensor
Stack feed roller (upper)
Stack feed roller (lower)
Feed
am
ount
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 12
E. Fold/Delivery System
(1) Outline
The paper fold mechanism consists of a guide plate, paper fold roll-
ers, and a paper pushing plate.
The guide plate, paper fold rollers, and paper pushing plate are
driven by the staple motor (FFSM). The drive force is transferred
with a combination of gears and cams. Motor operation is moni-
tored by the binding lock sensor (FFE).
Until the paper stack reaches the folding position, the guide plate
covers the paper fold rollers to act as a paper path through which a
paper stack is fed to the saddle unit and to prevent a paper stack
from touching the rollers.
A binding home position sensor (FFHPD) is provided to detect the
positions of the paper fold rollers and paper pushing plate.
The paper stack folded in two by the paper fold rollers is delivered
by bind delivery rollers. The bind delivery rollers are also driven by
the staple motor (FFSM).
A bind tray sensor (FFED) is provided on the bind tray to detect
presence/absence of a paper stack; however, it is not used to
detect a jam.
ers, and a paper pushing plate.
The guide plate, paper fold rollers, and paper pushing plate are
driven by the staple motor (FFSM). The drive force is transferred
with a combination of gears and cams. Motor operation is moni-
tored by the binding lock sensor (FFE).
Until the paper stack reaches the folding position, the guide plate
covers the paper fold rollers to act as a paper path through which a
paper stack is fed to the saddle unit and to prevent a paper stack
from touching the rollers.
A binding home position sensor (FFHPD) is provided to detect the
positions of the paper fold rollers and paper pushing plate.
The paper stack folded in two by the paper fold rollers is delivered
by bind delivery rollers. The bind delivery rollers are also driven by
the staple motor (FFSM).
A bind tray sensor (FFED) is provided on the bind tray to detect
presence/absence of a paper stack; however, it is not used to
detect a jam.
(2) Paper Folding
Paper is folded using paper fold rollers and a paper pushing plate.
Almost concurrently with the start of roller rotation, the paper push-
ing plate starts operating to push the paper stack into the gap
between the paper fold rollers. When the paper stack is fed about
10 mm with the rotation of the paper fold rollers, the paper pushing
plate returns to the home position. Then, the paper stack is deliv-
ered to the bind tray using the paper fold rollers and bind delivery
rollers.
Half the entire surface of each paper fold roller is uncovered
excluding the central area and the area at the left and right ends.
The uncovered surface of the upper paper fold roller comes in
touch with the uncovered surface of the lower paper fold roller only
at the center and left and right ends, allowing a paper stack to be
fed without causing creases. The other half of the upper paper fold
roller that is covered comes in touch with the other half of the lower
paper fold roller that is also covered, allowing a paper stack to be
folded while being fed.
Almost concurrently with the start of roller rotation, the paper push-
ing plate starts operating to push the paper stack into the gap
between the paper fold rollers. When the paper stack is fed about
10 mm with the rotation of the paper fold rollers, the paper pushing
plate returns to the home position. Then, the paper stack is deliv-
ered to the bind tray using the paper fold rollers and bind delivery
rollers.
Half the entire surface of each paper fold roller is uncovered
excluding the central area and the area at the left and right ends.
The uncovered surface of the upper paper fold roller comes in
touch with the uncovered surface of the lower paper fold roller only
at the center and left and right ends, allowing a paper stack to be
fed without causing creases. The other half of the upper paper fold
roller that is covered comes in touch with the other half of the lower
paper fold roller that is also covered, allowing a paper stack to be
folded while being fed.
FFSM
Paper fold roller (lower)
Paper fold roller (upper)
Staple motor
(FFSM)
(FFSM)
Paper pushing plate
Bookbinding home position
sensor (FFHPD)
sensor (FFHPD)
Sensor flag
Came
Paper stack
FFSM
Paper fold roller (lower)
Paper fold roller (upper)
Staple motor
(FFSM)
(FFSM)
Bookbinding home position
sensor (FFHPD)
sensor (FFHPD)
Paper pushing plate
Paper stack
Folds/feeds a paper stack.
Feeds a paper stack.
Outlet
Inlet
Paper push plate
Paper stack
Feed motor (FFM)
Bundle exit motor (FAM)
Paddle motor (FPM)
Paddle home position
sensor (FPDHPD)
sensor (FPDHPD)
Bundle roller home position
sensor (FARHPD)
sensor (FARHPD)
Staple safety switch
(FSSSW)
(FSSSW)
Staple shift motor (FSM)
Staple motor (FFSM)
Staple drive home position
sensor (FSHPD)
sensor (FSHPD)
Bookbinding position
sensor (FFPD)
sensor (FFPD)
Bookbinding roller home
position sensor (FFRHPD)
position sensor (FFRHPD)
Bookbinding clutch (FFC)
Bookbinding home
position sensor (FFHPD)
position sensor (FFHPD)
Bookbinding paper
sensor (FFED)
sensor (FFED)
: CW rotation
: CCW rotation
50msec
Staple
Fold, Delivery
13571msec
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 13
F. Punch Unit (AR-PN1A/B/C/D)
(1) Basic Operations
a. Outline
The punch unit is an option, and is designed for installation to the
pickup assembly of the finisher.
The punch unit is not equipped with a paper feeding mechanism,
and the sheets from the host machine move through the punch unit
and then the feed system of the finisher. When the trailing edge of a
sheet from the host machine reaches the punch 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 com-
mands from the finisher controller PCB as well as the commands
from the punch controller PCB.
The punch unit is an option, and is designed for installation to the
pickup assembly of the finisher.
The punch unit is not equipped with a paper feeding mechanism,
and the sheets from the host machine move through the punch unit
and then the feed system of the finisher. When the trailing edge of a
sheet from the host machine reaches the punch 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 com-
mands from the finisher controller PCB as well as the commands
from the punch controller PCB.
(2) Punching Operation
a. Outline
The punch 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 the punch unit, the inlet roller of the finisher assem-
bly 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 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.
The punch motor (FPNM) is a DC motor. The home position of the
punch shaft is detected by the punch home position sensor
(FPHPD). To make sure that the punch motor (FPNM), which is a
DC motor, stops exactly at its home position, the punch motor
(FPNM) is stopped in relation to the count of the clock pulses kept
by the punch motor lock sensor (FPMCK). A single punching oper-
ation is executed by rotating the punch shaft 180
The punch 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 the punch unit, the inlet roller of the finisher assem-
bly 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 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.
The punch motor (FPNM) is a DC motor. The home position of the
punch shaft is detected by the punch home position sensor
(FPHPD). To make sure that the punch motor (FPNM), which is a
DC motor, stops exactly at its home position, the punch motor
(FPNM) is stopped in relation to the count of the clock pulses kept
by the punch motor lock sensor (FPMCK). A single punching oper-
ation 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 punch unit; on the other
hand, as many as five LEDs (LED PCB) are mounted under the
path, together serving as five sensors. The frontmost sensor
(LED5, PT5) is used as a trailing edge sensor (FPTD) to detect the
training edge of sheets, and the remaining four (LED1 through
LED4, PT1 through PT4) are used as horizontal registration sen-
sors (FPSD1 through FPSD4) to detect the rear position of sheets
when punching holes.
As many as five light-receiving transistors (photosensor PCB) are
mounted over the inlet paper path of the punch unit; on the other
hand, as many as five LEDs (LED PCB) are mounted under the
path, together serving as five sensors. The frontmost sensor
(LED5, PT5) is used as a trailing edge sensor (FPTD) to detect the
training edge of sheets, and the remaining four (LED1 through
LED4, PT1 through PT4) are used as horizontal registration sen-
sors (FPSD1 through FPSD4) to detect the rear position of sheets
when punching holes.
The punch motor (FPNM), punch unit, and sensors make up the
punch slide unit, which moves to the front/rear to suit the selected
paper size. The movement to the front/rear is driven by the punch
horizontal registration motor (FPSM). The home position of the
punch slide unit is detected by the punch horizontal registration
home position sensor (FPSHPD), and the punch horizontal regis-
tration motor (FPSM) is a stepping motor.
The punch motor (FPNM) and punch horizontal registration motor
(FPSM) are controlled with 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 col-
lected in the waste paper case. The case is monitored by the
LED121 on the waste full LED PCB and PT131 on the waste full
photosensor PCB (FPDD).
punch slide unit, which moves to the front/rear to suit the selected
paper size. The movement to the front/rear is driven by the punch
horizontal registration motor (FPSM). The home position of the
punch slide unit is detected by the punch horizontal registration
home position sensor (FPSHPD), and the punch horizontal regis-
tration motor (FPSM) is a stepping motor.
The punch motor (FPNM) and punch horizontal registration motor
(FPSM) are controlled with 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 col-
lected in the waste paper case. The case is monitored by the
LED121 on the waste full LED PCB and PT131 on the waste full
photosensor PCB (FPDD).
Finisher
u
nit
control
system
Punch controller PCB
Punch drive system
Horizontal registration
drive system
Punch
m
otor
(FPNM)
drive
signal
Punch controller PCB (1/2)
W
a
ste
full
d
etection
signal
(LED121,PT131)
FPDD
Punch
h
ome
position
s
ensor
d
etection
s
ignal
(FPHPD)
Horizontal
registration
h
ome
position
(FPSHPD)
detection
s
ignal
SREGHP
Punch controller PCB (2/2)
Punch
m
otor
lock
sensor
(FPMCK
)
detection
signal
PUNCHCLK
PT1
LED1
2
3
4
5
5
2
3
4
T
railing
edge
detection
s
ignal
(LED5,
P
T5)
F
PTD
Horizontal
registration
d
etection
signal
(LED1
-
4,
PT1
-
4)
FPSD1
-
4
Horizontal
registration
motor
(FPSM)
drive
s
ignal
PT131
LED121
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 14
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 posi-
tion sensor (FPHPD).
The punch unit comes in four types, selected to suit the country of
installation: 2-hole (Punch Unit-J1), 2- and 3-hole (Punch Unit-K1),
or two types of 4-hole (Punch Unit-G1, Punch Unit-H1).
The 2-hole and 4-hole types punch a hole when the punch shaft is
rotated 180
The hole puncher is driven by the punch motor (FPNM). The home
position for the hole puncher is detected by the punch home posi-
tion sensor (FPHPD).
The punch unit comes in four types, selected to suit the country of
installation: 2-hole (Punch Unit-J1), 2- and 3-hole (Punch Unit-K1),
or two types of 4-hole (Punch Unit-G1, Punch 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 round trip. The 2-/3-hole type punches a hole, but the cir-
cumference of the punch shaft is divided into two (half for 2-hole
and the other half for 3-hole).
1)
cumference of the punch shaft is divided into two (half for 2-hole
and the other half for 3-hole).
1)
2-Hole, 4-Hole Type
The home position is identified when the punch home position
sensor (FPHPD) is ON. The punching operation for the first
sheet ends when the punch shaft has rotated 180
The home position is identified when the punch home position
sensor (FPHPD) is ON. The punching operation for the first
sheet ends when the punch shaft has rotated 180
° and the
punch home position sensor (FPHPD) goes ON; the punching
operation for the second sheet ends when the punch shaft has
rotated 180
operation for the second sheet ends when the punch shaft has
rotated 180
° in reverse and the punch home position sensor
(FPHPD) goes ON.
<1> A hole is punched along the trailing edge of the 1st sheet.
<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 (FPHPD) is ON. To make two holes, the punching oper-
ation for the first sheet ends when the punch shaft rotates 180
The home position is identified when the punch home position
sensor (FPHPD) is ON. To make two holes, the punching oper-
ation for the first sheet ends when the punch shaft rotates 180
°
(half circumference) and the punch home position sensor
(FPHPD) 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. The
punching operation for the second sheet ends when the punch
shaft has rotated 180
(FPHPD) 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. The
punching operation for the second sheet ends when the punch
shaft has rotated 180
° counterclockwise and the punch home
position sensor (FPHPD) 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 two sheets of paper:
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 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.
makes a single 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).
a single round trip in escape direction (moving up the hole
puncher).
(punch shaft at rest/
home position)
(punch shaft CW rotation
by 90°/hole made)
(punch shaft CW rotation by 180°/
end ofpunching operation)
Sensor flag
Punch home position
sensor (FPHPD)
sensor (FPHPD)
Punch shaft
Eccentric cam
Hole
puncher
puncher
Die
Die
Paper
Waste paper
(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 shaft
Eccentric cam
Hole
puncher
puncher
Die
Die
Paper
Waste paper
Punch home position
sensor (FPHPD)
sensor (FPHPD)
(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 shaft
Eccentric cam
Hole
puncher
puncher
Die
Die
Paper
Waste paper
Punch home position
sensor (FPHPD)
sensor (FPHPD)
(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)
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