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The unit folds the stitched stack of sheets, and then feeds it to the point of delivery. This point is

where the center of the stack, i.e., stapling position, matches the height of the paper pushing plate and
the paper folding roller nip.

The stack is moved forward by operating the paper positioning plate. When the plate is operated,

the guide plate which has been covering the paper folding rollers, also moves down so that the paper
folding rollers directly face the stack.

Paper folding roller

Guide plate

Paper positioning plate

Paper pushing guide

The paper pushing plate pushes against the center of the stack to move it in the direction of the

paper folding rollers. In response, the paper folding rollers pick the stack along its center and fold it in
two. The paper folding rollers together with the delivery roller then move the stack along to output it
on the delivery tray.

Delivery roller

Paper folding 
roller

The paper output mechanism serves to keep a stack of sheets coming from the finisher in place

for the next steps (stapling, folding).

The paper inlet is equipped with the No.1 flapper and the No.2 flapper, which operate to config-

ure the paper path to suit the size of paper. The paper positioning plate is kept in wait at a predeter-
mined location to suit the size of paper. The paper positioning plate is driven by the paper positioning
plate motor (M4S), and the position of the plate is identified in reference to the number of motor
pulses coming from the paper positioning plate home position sensor (PI7S). A sheet moved by the
inlet roller is handled by the feed rollers and the crescent roller and held in a predetermined position.
The feed plate serve to move sheets by coming into contact with or moving away from sheets as
needed.

The alignment plates put the stack into order each time a sheet is output. The alignment plates are

driven by the alignment motor (M5S), whose position is identified in reference to the number of
motor pulses coming from the alignment plate home position sensor (PI5S).

To prevent interference between paper and the paper folding rollers when the paper is being

output, the folding rollers are designed to be covered by a guide plate. The guide plate moves down
before paper is folded so as to expose the paper folding rollers.

The inlet is equipped with the No.1, No.2 and No.3 paper sensors (PI18S, PI19S, PI20S) each

suited to a specific paper size, and the paper positioning plate is equipped with a paper positioning
plate paper sensor (PI8S).

SL1S

SL4S

SL2S

M8S

M6S/

M7S

M1S

M5S

M3S

PI1S

M2S

M4S

PI4S

Feed

motor

drive

signal

Guide

motor

drive

signal

Stitcher

motor

drive

signal

(front/rear)

Paper

pushing

plate

motor

drive

signal

Alignment

motor

drive

signal

Paper

pushing

plate

motor

clock

signal

LUNGECLK

No.1

paper

deflecting

solenoid

drive

signal

FLPSL1

No.2

paper

deflecting

solenoid

drive

signal

FLPSL2

Feed

plate

contact

solenoid

drive

signal

RLNIPSL

Paper

folding

motor

clock

signal

FLDCLK

Paper

folding

motor

drive

signal

Paper

positioning

plate

motor

drive

signal

Saddle stitcher controller

PCB (1/2)

Saddle stitcher controller PCB (2/2)