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MX-FNX4 OPERATIONAL DESCRIPTION 5 – 3
2. Feed/drive system
A. Outline
This machine comprises the finisher and the saddle stitch unit.
The finisher is designed to operate according to the commands
from its host machine to deliver arriving copies to trays in the
appropriate mode: simple stacking, job offset, or stapling. The sad-
dle stitch unit folds paper stack and delivers it to the delivery tray of
the saddle stitch unit after feeding, aligning, stitching, and feeding
the paper supplied from the host machine in accordance with the
commands received through the finisher controller PCB. Four deliv-
ery modes are available.
The finisher is designed to operate according to the commands
from its host machine to deliver arriving copies to trays in the
appropriate mode: simple stacking, job offset, or stapling. The sad-
dle stitch unit folds paper stack and delivers it to the delivery tray of
the saddle stitch unit after feeding, aligning, stitching, and feeding
the paper supplied from the host machine in accordance with the
commands received through the finisher controller PCB. Four deliv-
ery modes are available.
B. Control configuration of finisher
The finisher moves copies arriving from the host machine to the
delivery tray, stapling tray, or the saddle stitch unit according to the
mode of delivery. On the stapling tray, the copies are subjected to
job offset or stapling as instructed by the host machine.
In addition, stack is delivered from the stapling tray with the help of
the trailing edge assist guide as well as the delivery roller. The inlet
motor (FFM), delivery motor (FAM), and the trailing edge assist
motor (FASM) are the stepping motors. These motors are con-
trolled by the microprocessor (CPU) on the finisher controller PCB,
and rotate either clockwise or counterclockwise.
The paper paths are equipped with the following two sensors for
detection of paper (arrival, passage):
• Inlet sensor (FED)
• Feed path sensor (FPDD)
In addition, each delivery tray is equipped with a sensor designed
to detect the presence/absence of paper on it.
• No.1 tray paper sensor (FBED1)
• No.2 tray paper sensor (FBED2)
If a copy fails to reach or move past each sensor within a specific
period of time, the finisher controller PCB identifies the condition as
a jam, and stops the ongoing operation, and at the same time,
informs the host machine of the condition. When all doors are
closed after the paper jam is removed, the above two sensors (inlet
sensor and delivery path sensor) check whether or not copies are
being detected. If the sensors detect a copy, the finisher unit judges
that paper jams have not completely been removed, and sends the
paper jam removal signal to the host machine again.
delivery tray, stapling tray, or the saddle stitch unit according to the
mode of delivery. On the stapling tray, the copies are subjected to
job offset or stapling as instructed by the host machine.
In addition, stack is delivered from the stapling tray with the help of
the trailing edge assist guide as well as the delivery roller. The inlet
motor (FFM), delivery motor (FAM), and the trailing edge assist
motor (FASM) are the stepping motors. These motors are con-
trolled by the microprocessor (CPU) on the finisher controller PCB,
and rotate either clockwise or counterclockwise.
The paper paths are equipped with the following two sensors for
detection of paper (arrival, passage):
• Inlet sensor (FED)
• Feed path sensor (FPDD)
In addition, each delivery tray is equipped with a sensor designed
to detect the presence/absence of paper on it.
• No.1 tray paper sensor (FBED1)
• No.2 tray paper sensor (FBED2)
If a copy fails to reach or move past each sensor within a specific
period of time, the finisher controller PCB identifies the condition as
a jam, and stops the ongoing operation, and at the same time,
informs the host machine of the condition. When all doors are
closed after the paper jam is removed, the above two sensors (inlet
sensor and delivery path sensor) check whether or not copies are
being detected. If the sensors detect a copy, the finisher unit judges
that paper jams have not completely been removed, and sends the
paper jam removal signal to the host machine again.
Delivery
system
Normal
delivery
Saddle stitch delivery
Job offset
Staple
Simplestacking
*One-pointstapleinthefront
*One-pointstapleattheback
*Two-pointstaple
Normal delivery tray
Normal delivery tray
Saddle stitch
delivery tray
Finisher controller PCB (1/2)
No.2
tray
shift
motor
drive
signal
No.1
tray
shift
shift
motor
drive
signal
Stack
delivery
motor
drive
signal
signal
Alignment
front/back
m
otor
drive
signal
Tr
ailing
edge
assist
assist
motor
drive
signal
Inlet
m
otor
drive
signal
Saddle
inlet
m
otor
drive
signal
Stapler
shift
m
otor
drive
drive
signal
Stapler
m
otor
drive
drive
signal
No.1
delivery
roller
separator
solenoid
drive
signal
Buf
fer
roller
separator
fer
roller
separator
solenoid
drive
signal
signal
Inlet
roller
separator
separator
solenoid
drive
signal
Buf
fer
trailing
fer
trailing
edge
holding
solenoid
drive
signal
Saddle
inlet
selector
solenoid
drive
signal
signal
Finisher controller PCB (2/2)
Saddle stitcher
controller PCB
Saddle driver
PCB
FTLM2
FTLM1
FAM
FASM FFM
FSIFM
FSM
FFSM
FFJM
FRJM
FBES
FSFS
FINRRS
FBRRS
FFDRRS
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