Sharp MX-5500N / MX-6200N / MX-7000N (serv.man17) Peripheral ▷ View online
MX-FNX4 OPERATIONAL DESCRIPTION 5 – 9
G. Controlling the inlet flappers (MX-FNX4)
Outline
The two flappers mounted at the paper inlet are operated to config-
ure the feed path according to the size of paper. The flappers are
used to enable the following:
1) To detect the passage of the trailing edge of the paper being
The two flappers mounted at the paper inlet are operated to config-
ure the feed path according to the size of paper. The flappers are
used to enable the following:
1) To detect the passage of the trailing edge of the paper being
moved by an appropriate sensor.
2) To prevent the following sheet from butting against the top of
the existing stack,
Table below shows the relationship between sensors and paper
sizes.
sizes.
Each flapper is driven by its solenoid.
Table below shows the relationship between solenoids and paper
sizes.
Table below shows the relationship between solenoids and paper
sizes.
Delivery Path of A3/297mmx432mm (11x17) size paper
In the case that three sheets are delivered.
In the case that three sheets are delivered.
Delivery Path of B4/LGL size paper
In the case that three sheets are delivered.
In the case that three sheets are delivered.
Sensor
A3/279mmx432mm
(11x17)
(11x17)
B4/LGL
A4R/LTRR
No.1paper sensor
(FS1PD)
(FS1PD)
Used
Used
Used
No.2 paper sensor
(FS2PD)
(FS2PD)
Not used
Used
Used
No.2 paper sensor
(FS3PD)
(FS3PD)
Not used
Not used
Used
Solenoid
A3/279mmx432mm
(11x17)
(11x17)
B4/LGL
A4R/LTRR
No. 1 paper deflecting
plate solenoid
(FS1DFS)
plate solenoid
(FS1DFS)
OFF
ON
ON
No. 2 paper deflecting
plate solenoid
(FS2DFS)
plate solenoid
(FS2DFS)
OFF
OFF
ON
No.1 paper sensor FS1PD
No.1 paper deflecting
plate solenoid
No.2 paper sensor FS2PD
No.2 paper deflecting
plate solenoid
No.3 paper sensor FS3PD
Paper passed
OFF
OFF
Paper unpassed
OFF
Paper unpassed
Leading edge
FS1PD
FS2PD
FS3PD
FS1PD
FS2PD
FS3PD
FS1
DFS
FS2
DFS
No.1 paper sensor
FS1PD
No.2 paper sensor
FS2PD
No.3 paper sensor
FS3PD
Paper passed
Paper passed
ON
OFF
Paper unpassed
Leading edge
FS1PD
FS2PD
FS3PD
FS1PD
FS2PD
FS3PD
FS1
DFS
FS2
DFS
MX-FNX4 OPERATIONAL DESCRIPTION 5 – 10
Delivery Path of A4R/LTRR size paper
In the case that three sheets are delivered.
In the case that three sheets are delivered.
H. Controlling the movement of sheets (MX-
FNX4)
When the leading edge of a sheet has moved past the inlet flapper,
the intermediate feed roller and the crescent roller start to move the
sheet forward.
The intermediate feed roller is normally not in contact with the
roller. When the leading edge of a sheet reaches the intermediate
feed roller contact section, the feed plate contact solenoid (FSFCS)
causes the roller to come into contact with the roller so as to move
the sheet. The contact is broken as soon as the leading edge of the
sheet reaches the paper positioning plate. This series of operations
is executed each time a sheet arrives.
When the leading edge of the first sheet reaches the paper posi-
tioning plate, the paper positioning plate paper sensor (FSPPPD)
turns ON. The arrival of the second and subsequent sheets will not
be checked since the first sheet will still be over the sensor.
The crescent roller keeps rotating while sheets are being output,
butting the leading edge of each sheet against the paper position-
ing plate, and ultimately, keeping the leading edge of the stack in
order.
The alignment plate drives the alignment plates for each sheet so
as to put both left and right edges of the sheet in order.
the intermediate feed roller and the crescent roller start to move the
sheet forward.
The intermediate feed roller is normally not in contact with the
roller. When the leading edge of a sheet reaches the intermediate
feed roller contact section, the feed plate contact solenoid (FSFCS)
causes the roller to come into contact with the roller so as to move
the sheet. The contact is broken as soon as the leading edge of the
sheet reaches the paper positioning plate. This series of operations
is executed each time a sheet arrives.
When the leading edge of the first sheet reaches the paper posi-
tioning plate, the paper positioning plate paper sensor (FSPPPD)
turns ON. The arrival of the second and subsequent sheets will not
be checked since the first sheet will still be over the sensor.
The crescent roller keeps rotating while sheets are being output,
butting the leading edge of each sheet against the paper position-
ing plate, and ultimately, keeping the leading edge of the stack in
order.
The alignment plate drives the alignment plates for each sheet so
as to put both left and right edges of the sheet in order.
1)
The solenoid turns ON while paper is being moved so that the
roller comes into contact.
roller comes into contact.
2)
The solenoid turns OFF when the paper butts against the
paper positioning plate. The feed motor continues to rotate.
paper positioning plate. The feed motor continues to rotate.
3)
The solenoid turns ON when the next sheet arrives, and the
roller comes into contact.
roller comes into contact.
No.1 paper sensor
FS1PD
No.2 paper sensor
FS2PD
No.3 paper sensor
FS3PD
Paper passed
ON
Paper passed
ON
Paper passed
Leading edge
FS1PD
FS2PD
FS3PD
FS1PD
FS2PD
FS3PD
FS1
DFS
FS2
DFS
Intermediate feed roller
Feed motor
Feed plate contact
solenoid
Paper positioning plate
paper sensor
FSFM
FSPPPD
FSFCS
Paper positioning plate
paper sensor
FSFM
FSPPPD
FSFCS
Paper positioning
plate paper sensor
FSFM
FSPPPD
FSFCS
MX-FNX4 OPERATIONAL DESCRIPTION 5 – 11
I. Aligning the sheets (MX-FNX4)
The alignment plate motor (FSJM) drives the alignment plates each
time a sheet is output, putting both left and right edges of the sheet
in order. The alignment plate motor is a 4-phase stepping motor.
The position of the alignment plate is identified in reference to the
number of motor pulses from the alignment plate home position
sensor (FSAHPD).
The following briefly describes what takes place when the saddle
stitching mechanism operates on two sheets.
1) When the first sheet has been output, the alignment plates butt
time a sheet is output, putting both left and right edges of the sheet
in order. The alignment plate motor is a 4-phase stepping motor.
The position of the alignment plate is identified in reference to the
number of motor pulses from the alignment plate home position
sensor (FSAHPD).
The following briefly describes what takes place when the saddle
stitching mechanism operates on two sheets.
1) When the first sheet has been output, the alignment plates butt
against the left and right edges of the stack (first alignment).
The alignment plates leave the home position in advance and
remain in wait at points 10 mm from the edges of the stack.
The alignment plates leave the home position in advance and
remain in wait at points 10 mm from the edges of the stack.
2) The alignment plates move away from the edges of the stack
over a short distance and then butt against the edges once
again (Second alignment).
again (Second alignment).
3) The alignment plates escape to points 10 mm from the edge of
the stack.
4) When the following stack arrives, steps 1) through 3) above
are repeated.
5) The alignment plates butt against the stack once again, during
which stitching takes place.
6) The alignment plates escape to points 10 mm from the edges
of the stack, after which folding and delivery take place.
7)
When the first sheet of the following stack reaches the No.1
paper sensor, the guide moves to a point 10 mm from the edge
of the stack to be ready for the next alignment operation.
paper sensor, the guide moves to a point 10 mm from the edge
of the stack to be ready for the next alignment operation.
Paper
Alignment
plate
Paper positioning
plate
Alignment
plate
Alignment plate home position
sensor (FSAHPD)
Alignment plate
Alignment motor
Paper stack
Paper positioning
plate
Alignment
plate
Alignment plate
home position
sensor (FSAHPD)
FSJM
In case of 2 sheets:
Alignment plate home
position sensor (FSAHPD)
Alignment motor (FSJM)
Paper positioning plate
motor (FPPM)
Entry of
1st sheet
Entry of
2nd sheet
1st sheet of
following stack entry
Alignment
Escape
[1]: Move to wait position
[2]: Stitch period
[3]: Paper folding/delivery period
[4]: Move to following stack size wait position
MX-FNX4 OPERATIONAL DESCRIPTION 5 – 12
J. Controlling the phase of the crescent roller
(MX-FNX4)
If alignment was executed with the crescent roller in contact with
the stack of sheets, the resulting friction against the roller causes
the stack to move inappropriately. To prevent this problem, the
phase of the roller is identified and used to determine the timing of
alignment.
The phase of the crescent roller is identified by the crescent roller
phase sensor (FSCRPD). The flag for the crescent roller phase
sensor is mounted to the crescent roller shaft. The flag will leave
the sensor while the roller shaft rotates, turning the sensor ON or
OFF, enabling the assumption that the crescent roller is positioned
at the opposite side of the stack. The alignment plates are operated
to correspond with this change in the state of the sensor.
the stack of sheets, the resulting friction against the roller causes
the stack to move inappropriately. To prevent this problem, the
phase of the roller is identified and used to determine the timing of
alignment.
The phase of the crescent roller is identified by the crescent roller
phase sensor (FSCRPD). The flag for the crescent roller phase
sensor is mounted to the crescent roller shaft. The flag will leave
the sensor while the roller shaft rotates, turning the sensor ON or
OFF, enabling the assumption that the crescent roller is positioned
at the opposite side of the stack. The alignment plates are operated
to correspond with this change in the state of the sensor.
K. Outline of folding (MX-FNX4)
The paper folding mechanism consists of a guide plate, paper fold-
ing rollers, paper pushing plate, and paper positioning plate.
The guide plate is used to cover the folding rollers while sheets are
output so as to prevent sheets from coming into contact with the
folding rollers during output. Before the stack is folded, the guide
plate moves down to enable the folding rollers to operate.
Designations and functions of the motors and sensors to be used in
the folding mechanism are shown below.
ing rollers, paper pushing plate, and paper positioning plate.
The guide plate is used to cover the folding rollers while sheets are
output so as to prevent sheets from coming into contact with the
folding rollers during output. Before the stack is folded, the guide
plate moves down to enable the folding rollers to operate.
Designations and functions of the motors and sensors to be used in
the folding mechanism are shown below.
Crescent roller
phase sensor (FSCRPD)
Flag
Feed motor
Alignment plate
Crescent roller
Stack
FSFM
Alignment plate
Sensor
flag
Crescent
roller
Crescent roller
phase sensor
(FSCRPD)
If the crescent roller
was in contact with the
stack, alignment operation
could be obstructed.
Motor
Function
Folding motor (FSFOM)
Drives paper folding roller
Paper pushing plate motor
(FSLGM)
(FSLGM)
Drives paper pushing plate
Sensor
Function
Paper pushing plate motor clock
sensor (FSLGE)
sensor (FSLGE)
Detects clock pulses from the paper
pushing plate motor
pushing plate motor
Paper folding motor clock sensor
(FSFOE)
(FSFOE)
Detects clock pulses from the paper
folding motor
folding motor
Tray paper sensor (FSTPD)
Detects presence/absence of paper
on delivery tray of saddle stitch unit
on delivery tray of saddle stitch unit
Delivery sensor (FSPDD)
Detects delivery of paper
Paper pushing plate home
position sensor (FSLGHPD)
position sensor (FSLGHPD)
Detects home position of paper
pushing plate
pushing plate
Paper pushing plate top position
sensor (FSLGTD)
sensor (FSLGTD)
Detects top position of paper pushing
plate
plate
Vertical path paper sensor
(FSVPPD)
(FSVPPD)
Detects remaining paper after
correction of jam
correction of jam
Paper folding home position
sensor (FSFOHPD)
sensor (FSFOHPD)
Detects home position of paper
folding roller
folding roller
Alignment operation is
started when the flag has
covered the sensor and the
crescent roller is away from
the stack.
Crescent roller phase
sensor (FSCRPD)
Alignment operation
Feed motor (FSFM)
First sheet
Second sheet
Feed motor
stop
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