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2DC
2-1-3 Electrophotographic system
Electrophotography is the technology used in laser printing which transfer data representing texts or graphics objects
into a visible image which is developed on the photosensitive drum, finally fusing on paper, using light beam generated
by a laser diode.
This section provides technical details on the copier's electrophotography system.
(1) Electrophotographic cycle
The electrophotography system of the copier performs a cyclic action made of six steps as follows. Each step is
technically explained in the following sections.
Laser scaner unit
Process unit
1
Main charging
2
Exposure
Drum
6
Cleaning
3
Developing
4
Transfer
5
Fusing
Fuser unit
Figure 2-1-7 Electrophotographic cycle
The sections for main charging, exposure (drum), developing, and cleaning are modularized in one Process unit.
2-1-7
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