Panasonic FA-S680 Service Manual ▷ View online
2-2
2.3 Bin drive
Up and down movement of each bin in the sorter is achieved by the rotation of the
bin motor (M1) (+24V) located on the lower frame of the sorter. If any overdrive
occurs,the upper and lower limit switches(MS2 and MS3) (micro-switch) detect
the abnormality and protect the machine against damage.
(1) A spacer and a tray pin are fitted to both sides of each bin. The spacer is
engaged in the groove of bin side frame,while the tray pin is engaged in the
groove of the reed cam,which firmly secures each bin.
(2) The rotating motion of the bin motor is transmitted to the reed cam (front/rear)
through the bin drive belt. Tray pins (for each bin) engaged in the groove in the
reed cam move up and down along the inclination provided in the reed cam,
thereby causing the bin frame (and the bin) engaged with each spacer to move
up and down.
(3) The position of the cam is detected by the reed cam home position sensor
(micro switch). This is achieved by turning the reed cam home position sensor
switch ON each time the actuator on the reed cam (rear) completes a rotation.
Bin side frame (front)
Bin side frame (rear)
Bin
Spacer
Tray pin
Reed cam (front)
Bin drive belt
Reed cam home
position sensor (MS5)
position sensor (MS5)
Bin drive motor (M1)
Reed cam (rear)
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Mechanism
2.4 Tamper drive
The tampers in the bin unit are driven by the tamper drive motor located on the
lower frame of the sorter. The tampers jog each time a copy is fed into a bin and
keeps the copies in each bin evenly stacked.
(1) The copier begins feeding paper when the "Print" key is pressed. Copies
discharged into each bin are stacked evenly by the movement of the tampers
in the bin unit.
(2) The tampers (front/rear) are driven by the tamper motor (pulse motor) . The
amount of motion of tamper (front) is constant, regardless of paper size, while
that of the tamper (rear) are determined by the paper size signal supplied from
the copier.
(3) Drive is transmitted to the tampers via three different belts. One belt drives the
front tamper, while two belts are used to drive the rear bars. (One to drive the
speed-change gear, the other to take drive from the gear to the bars.)
The rear tampers move in a slotted plastic bracket. Each slot is actually a rack
gear which allows for precisely controlled movement of the rear tampers. The
starting point and distance that the rear tampers move depends on the size of
copy paper as sensed by the copier and communicated to the sorter. Since
drive for the movement of both front and rear tampers may differ, the front
tamper includes a friction-type clutch. This allows drive to the rear tampers to
continue after the front tampers has reached the limit of its movement.
Tamper drive motor (M3)
Tamper (front)
Tamper drive belt (front)
Tamper drive belt (rear 1)
Tamper drive belt (rear 2)
Tamper holder
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Tamper guide (upper)
Tampers (rear)
Tamper guide (lower)
2-4
(5) The tamper (rear) home position is detected when the sensor detecting plate
attached to the tamper support blocks the light from the tamper home position
sensor on the bottom frame of the sorter. A signal according to the copy size is
output from the control panel and the tamper drive motor rotates appropriately
to the start position for the selected copy size.
Tamper home position
sensor
sensor
Tamper support
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(6)When paper is detected by the paper exit sensor in the copier, the tamper
motor rotates and positions the tamper at a prescribed distance (depending
on paper size) from the selected copy size edge so the copy can be received
easily into the bin. After receiving a copy, the tamper moves to the preset copy
size position to tap it into place, then the tamper moves out to the start position
and waits for the next copy.
Start position
Standard staple position
Bin
Paper
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2-5
Mechanism
2.5 Stapler drive
The stapler assembly is mounted on the lower front side of the sorter transport
assembly. Copies discharged into the bins in the "Staple mode" can be stapled
automatically. In addition, manual stapling can be performed on copies placed
into the stack tray by pressing the the "Staple" button.
(1) The operational components in the stapler include the stapler swing motor,
stapler drive motor, stapler swing sensor, stapler swing home sensor, stapler
safety switch, paper detecting sensor, staple detecting sensor, and cam position
sensor.
(2) For stapling to begin, the staple detecting sensor (PS1) must detect staples in
the staple cartridge, and the sorters bin paper sensor (TX-1, RX-1) must detect
paper in the bins. The stapling sequence is as follows:
a) The bin motor (M1) correctly positions the bin assembly, the tampers tap
the paper.
b) The stapler swing motor (M4) drives the stapler to the stapling position as
detected by the stapler swing sensor (PS3).
c) The safety switch (MS6) confirms no foreign objects are in the bin, the
stapler's paper detecting sensor (PS6) confirms paper in the bin, and the
staple drive motor (M5) begins to drive. (If foreign objects are blocking the
stapler or paper has been removed, the swing motor (M4) returns the stapler
back to it's home position.)
d) Once the cam sensor (PS4) detects that the stapler drive has returned home,
the swing motor drives the stapler back to the stapler swing home sensor
(PS2).
e) Step a - d are repeated until the sensor bin paper sensor no longer detects
paper in the bin assembly.
(3) Safety protection is provided the stapler safety switch (MS6), if the paper holder
is moved more than 10mm (by foreign objects like fingers) the stapler drive
motor is disabled.
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