DOWNLOAD Sharp AR-F12 (serv.man6) Service Manual ↓ Size: 9.34 MB | Pages: 127 in PDF or view online for FREE

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)

Saddle stitcher controller PCB (2/2)

Saddle stitcher controller PCB (1/2)

PI19S

PI18S

PI20S

PI15S

PI14S

Paper

pushing

plate

top

position

detection

signal

LUNGET

OP

Paper

pushing

plate

home

position

detection

signal

LUNGEHP

No.3

paper

detection

signal

3RDPA

No.2

paper

detection

signal

2NDPA

No.1

paper

detection

signal

1STPA

PI21S

Paper

positioning

plate

home

position

detection

signal

PAPPOS

Paper

positioning

plate

paper

detection

signal

PPOSPAR

Tray

paper

detection

signal

TR

YP

AR

Guide

plate

home

position

detection

signal

GIDHP

Crescent

roller

position

detection

signal

FDRLHP

Delivery

detection

signal

DEIV

Paper

folding

home

position

detection

signal

PAFLDHP

Vertical

path

paper

detection

signal

VPJM