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EPSON EPL-6200/EPL-6200L Revision A
Operating Principles Description of Mechanisms 77
2.2.2 Charging Process
Before laser exposure, static electricity is given to the OPC drum (Organic
Photoconductor) to charge it.
The surface of the OPC drum is charged by the rotating brush (charging brush) and
pre-charging film.
Charging by the charging brush and the pre-charging film, by which charge is
given directly to the OPC drum, is characterized by generating ozone rarely,
requiring a low voltage and excelling in homogeneity and stability of the electric
potential.
The pre-charging film performs preliminary charging before charging with the
rotary brush (charging brush) to enhance efficiency of charging.
Figure 2-12. Charging Process
Photoconductor Unit
Paper Powder Cleaner
Drum Cover
Charging Brush
OPC Drum
Pre-charging
Film
1. Charging Brush
2. OPC Drum
3. Grounding
4. Charge Bias