4-3
FS-1800/1800N | FS-3800/3800N
4-1 Electrophotographic system
Electrophotography is the technology used in laser printing which transfer data representing texts
and graphics objects into a visible image which is developed on the photosensitive drum, finally
fusing them on paper using the light beam generated by a laser diode.
This section provides technical details on the printer’s electrophotography system.
4-1-1 Electrophotographic cycle
The electrophotographic system of the printer performs a cyclic action made of six steps as follows.
Each step is technically explained in the following sections.
Figure 4-1-1 Electrophotographic cycle
2
Exposure
3
Developing
6
Cleaning
1
Main charging
4
Transfer
5
Fusing
Drum unit
Laser scanner unit
Developer
Paper feed unit
Fuser unit
Drum
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