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1-9

1. 7  Copy Process

(1) Primary charge

(7) Discharge

(6) Cleaning

(5) Fusing

 Paper exit

Paper feed

(4) Separation (4) Transfer

(3) Developing

Toner

(2) Image exposure

Original

–DC

Discharge lamp:

Transfer/Separation

Fusing:

Cleaning:

Primary Charge:

Image Exposure:

Developing:

Drum surface
approximately-680V DC

Charge corona

Drum

Latent
charge
image

Illumination

Discharge
lamp

Heat roller

Fuser lamp

Paper

Pressure
roller

Separation Needle

Transfer
roller

Cleaning
blade

Drum

Drum

Fuser temperature
approximately 190˚C

Photoelectric
conversion

Drum

Magnetic
roller

Latent charge
image ( - )

Toner

(+)

Bias voltage: DC –400V

AC 1.5kVP-P

1-10

1. 8  Precautions for Consumables

(1) Photoreceptor drum

•

Do not touch the surface of the drum with your hands.

•

Stand the drum with the drum gear up for storage.

•

Be careful not to put water, oil, saliva and/or dirt on the drum.

•

Do not hit or scratch the surface of the drum.

•

Do not store the drum in a hot and humid area.

•

Avoid the direct sunlight or other strong light.

•

Do not expose the drum to the chemical gas or vapor.

•

Cover the drum anytime it is removed from the copier.

•

Do not use the corona cleaner unless dirty copy appears.
(The corona cleaner may damage the corona wire surface.)

(2) Developer

•

Be careful not to let foreign matter into the
magnet roller unit.

•

Do not touch the sleeve surface with your
hands.

•

Do not stand the cartridge on end.

•

Do not bang the cartridge.

•

Do not store the cartridge in a hot and/or
humid area.

•

Shake the cartridge as illustrated several times and install it into the copier.

(3) Safety and hygiene

•

Be careful not to inhale the toner.
Toner can easily dust and become airborne, so handle carefully.

•

When installing the developer, be careful not to let toner cloud. If you inhale it
by accident, wash out your mouth well. If toner sticks to your skin, wash it off
with soap.

•

Regarding toner on clothes, vacuum or brush before washing with soap. Do
not use benzine, alcohol or thinner. Their use may be responsible for stains
by melting the components of toner.

•

Use a vacuum for the toner on the floor or table and wipe it off with a cloth with
a neutral detergent.

•

Keep toner away from flames. It is not inflammable but will burn if exposed to
flames.

•

Waste consumables (photoreceptor and developer) should be recycled.

•

When using solvents such as IPA, read and follow the instruction carefully.
Use gloves and eye protection.

Corona Cleaner

2-1

Section II Mechanism

2. 1  Main Drive

The driving mechanism of the machine is as follows.

Motor name

Driving method

Driving unit

Main motor

DC24V driving

•

 Rotation of the photoreceptor drum

•

 Developer unit, Paper feed unit, Paper transport unit,

    Fuser unit, Paper exit unit

Main motor

Developer
drive gear

Paper
exit
drive
gear

Fuser drive
gear

Developer
coupling

Paper
feed
drive
gear

2-2

2. 2  Operations

1.Sheet Bypass

1)Construction of the sheet bypass

•

Sheet bypass consists of a sheet bypass paper feed unit and a registration roller

unit.

Component name

Description

Sheet bypass paper feed

Feed the paper from the sheet bypass pick up

roller

roller to the registration roller.

Sheet bypass pick up

Send the paper from the sheet bypass tray to

roller

the paper feed roller.

Sheet bypass DFP roller

Avoid feeding two sheets of paper at the same

time.

Registration roller

Time the lead edge of the paper with the

developed image on the drum.

Registration roller

Let the paper hit between registration rollers

and register it.

Paper pass sensor

To detect proper registration of the copy paper

at the registration rollers.