Sharp MX-FNX2 (serv.man7) Service Manual ▷ View online
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 9
(1) Stapler Movement Controller
The stapler unit is moved by the staple shift motor (FSM). Its home
position is detected by the staple shift home position sensor
(FSTHPD). The stapler waits at the back irrespective of the staple
mode and paper size. After paper has been stacked on the pro-
cessing tray, the stapler is moved to the specified stapling position
in response to the stapling command from the host machine.
The figure below shows the standby position of the stapler and the
stapling position depending on the staple mode.
1)
position is detected by the staple shift home position sensor
(FSTHPD). The stapler waits at the back irrespective of the staple
mode and paper size. After paper has been stacked on the pro-
cessing tray, the stapler is moved to the specified stapling position
in response to the stapling command from the host machine.
The figure below shows the standby position of the stapler and the
stapling position depending on the staple mode.
1)
Front 1-point stapling
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
2)
Rear 1-point stapling
The stapler waits at the back. The stapling position is the same
as the standby position. (Except B5R)
The stapler waits at the back. The stapling position is the same
as the standby position. (Except B5R)
3)
Middle 2-point stapling
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
4)
Middle 2-point stapling (bind mode)
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
The stapler waits at the back. The stapler moves to and
returns from the stapling position for each stapling operation.
The stapler first staples a paper stack at the rear stapling posi-
tion and then staples it at the front stapling position.
Stapling Operation Sequence
Rear 1-point Stapling of 2 Sheets
Rear 1-point Stapling of 2 Sheets
Feed direction
Stapling position
Stopper
Stapler
Standby position
Feed direction
Stapler
Stopper
Standby position
Stapling position
Stapling position
Feed direction
Standby position
Stapler
Stapling position
Stopper
Stapling position
Feed direction
Standby position
Stapler
Stopper
Stapling position
Stapling position
Host machine delivery signal
Start signal
Entry paper sensor (FED)
Alignment tray sensor
(FAD)
(FAD)
Feed motor (FFM)
Bundle exit motor (FAM)
Paddle motor (FPM)
Paddle home position
sensor (FPDHPD)
sensor (FPDHPD)
Bundle roller home
position sensor (FARHPD)
position sensor (FARHPD)
Staple safety switch
(FSSSW)
(FSSSW)
Alignment motor (front)
(FFJM)
(FFJM)
Alignment home position
sensor (front) (FFJHPD)
sensor (front) (FFJHPD)
Staple motor (FFSM)
Staple drive home position
sensor (FSHPD)
sensor (FSHPD)
: CW ro tatio n
∗
Variable by the size
: CCW rotation
Exit belt home position
sensor (FOBHPD)
sensor (FOBHPD)
4ms (A4)
∗
4ms (A4)
∗
Stack delivery
10msec
20msec
Staple
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 10
4. Delivery Tray Operation
A. Outline
The machine has a delivery tray in the finisher unit and a bind tray
in the saddle unit.
The bind tray in the saddle unit is of the fixed type and all the folded
paper stacks are delivered to this tray. This tray has a bind tray
sensor (FFED) to detect presence/absence of paper.
The delivery tray in the finisher unit is moved up and down using a
lift motor (FLM).
The finisher has a tray paper sensor (FBED) to detect presence/
absence of paper on the stack tray.
The home position sensor of the delivery tray is detected by the
paper surface sensor (FSLD). When paper has already been
stacked on the delivery tray, the home position is on the top surface
of the stacked paper. When paper has not yet been stacked on the
delivery tray, the home position is at the position where the edge of
the delivery tray is detected. At power-on, the finisher controller
PCB drives the lift motor (FLM) to return the delivery tray to the
home position.
When the paper coming from the processing tray is stacked on the
delivery tray, the lift motor (FLM) is driven a specified number of
pulses, causing the delivery tray to descend. Clock pulses are
detected by the lift lock sensor (FLE). Then, the delivery tray
returns to the home position for the next stacking operation.
The upper limit of the delivery tray is detected by the lift upper limit
sensor (FULD). When the lift upper limit sensor (FULD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
ascending.
The lower limit of the delivery tray is detected by the lift lower limit
sensor (FLLD). When the lift lower limit sensor (FLLD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
descending.
The finisher unit has a tray middle sensor (FMLD) to detect over-
stacking of large-size or mixed paper according to the stack height.
in the saddle unit.
The bind tray in the saddle unit is of the fixed type and all the folded
paper stacks are delivered to this tray. This tray has a bind tray
sensor (FFED) to detect presence/absence of paper.
The delivery tray in the finisher unit is moved up and down using a
lift motor (FLM).
The finisher has a tray paper sensor (FBED) to detect presence/
absence of paper on the stack tray.
The home position sensor of the delivery tray is detected by the
paper surface sensor (FSLD). When paper has already been
stacked on the delivery tray, the home position is on the top surface
of the stacked paper. When paper has not yet been stacked on the
delivery tray, the home position is at the position where the edge of
the delivery tray is detected. At power-on, the finisher controller
PCB drives the lift motor (FLM) to return the delivery tray to the
home position.
When the paper coming from the processing tray is stacked on the
delivery tray, the lift motor (FLM) is driven a specified number of
pulses, causing the delivery tray to descend. Clock pulses are
detected by the lift lock sensor (FLE). Then, the delivery tray
returns to the home position for the next stacking operation.
The upper limit of the delivery tray is detected by the lift upper limit
sensor (FULD). When the lift upper limit sensor (FULD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
ascending.
The lower limit of the delivery tray is detected by the lift lower limit
sensor (FLLD). When the lift lower limit sensor (FLLD) is turned
ON, the finisher controller PCB stops the lift motor (FLM) that is
descending.
The finisher unit has a tray middle sensor (FMLD) to detect over-
stacking of large-size or mixed paper according to the stack height.
5. Saddle Unit
A. Basic Operations
(1) Outline
The machine stitches a stack of sheets (middle 2-point), then folds
the stack in two in the finisher. These operations are controlled by
the finisher controller PCB.
The finisher controller PCB is controlled by the commands from the
host machine.
the stack in two in the finisher. These operations are controlled by
the finisher controller PCB.
The finisher controller PCB is controlled by the commands from the
host machine.
B. Feed/Drive System
(1) Outline
This machine stitches the paper stack coming from the finisher,
folds it, and delivers it to the bind tray in the saddle unit in response
to the commands from the host machine.
That is, the machine performs the following operations:
a. Paper feed-in
b. Stitching
c. Stack feed
d. Folding/delivery
folds it, and delivers it to the bind tray in the saddle unit in response
to the commands from the host machine.
That is, the machine performs the following operations:
a. Paper feed-in
b. Stitching
c. Stack feed
d. Folding/delivery
a. Paper feed-in
After being aligned on the processing tray, a stack of sheets is
sandwiched between the stack delivery rollers. As the stack deliv-
ery rollers rotate, the stack is fed toward the saddle unit.
After being aligned on the processing tray, a stack of sheets is
sandwiched between the stack delivery rollers. As the stack deliv-
ery rollers rotate, the stack is fed toward the saddle unit.
Tray paper sensor
(FBED)
Lift motor (FLM)
Lift lock sensor
(FLE)
(FLE)
Lift lower sensor
(FLLD)
(FLLD)
Tray middle sensor
(FMLD)
(FMLD)
Lift upper sensor
(FULD)
(FULD)
Delivery tray
Paper level sensor
(FSLD)
Edge
a) Paper feed-in
b) Stitching
c) Stack feed
d) Folding/delivery
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
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
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