4-1 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 printer’s electrophotography system.
4-1-1 Electrophotographic cycle
The electrophotography system of the printer performs a cyclic action made of six steps as follows. Each step is technically explained in the following sections.
Process unit
1Main charging
Laser scaner unit
2Exposure
6Cleaning
5Fusing
Fuser unit
Drum
4Transfer
3Developing
Figure 4-1-1 Electrophotographic cycle
The sections for main charging, exposure (drum), developing, and cleaning are modularized in one Process unit
