Print Process Technical Explanation - Epson AcuLaser C4000 Service Manual

EPSON AcuLaser C4000/C4100/C3000

2.1.3 Print Process Technical Explanation

2.1.3.1 Charging Process
This process gives an electrical charge to the surfaces of the photoconductive
drums.
2.1.3.2 Exposure Process
This process uses laser light to expose the imaging drums and form an
invisible electrostatic latent image on the drum surface.
2.1.3.3 Developing Process
This process builds up the images on the drum surfaces, using the toners.
2.1.3.4 Primary Transfer Process
This process transfers the toner images that have been built up on the drums,
to the Primary Intermediate Transfer Drums (IDT1).
2.1.3.5 Secondary Transfer Process
This process transfers the toner images from the Primary Intermediate
Transfer Drums (IDT1) to the Secondary Intermediate Transfer Drum (IDT2).
2.1.3.6 Cleaning
This process cleans the Primary Intermediate Transfer Drums (IDT1).
2.1.3.7 Tertiary Transfer Process
This process transfers the complete 4-color toner image from the Secondary
Intermediate Transfer Drum (IDT2) onto the paper.
2.1.3.8 Cleaning
This process cleans the Secondary Intermediate Transfer Drum (IDT2).
Operating Principles
2.1.3.9 Electrical Carge Removal
This process neutralizes / removes any positive electrical charge that remains
on the back of the paper due to the "tertiary transfer", through the provision of a
negative bias (negative voltage) by Detack Daw.
The removal of this electrostatic charge helps to prevent the paper from
sticking to, coiling around or being attracted toward the paper pathways, the
fuser and the paper eject tray. In addition, this procedure prevents image
disturbances that may be caused by electrical discharges and electrostatic
noise.
Print Process
Revision F
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