Epson SEPG04002 2.1.3 Technical Explanation of Print Process

EPSON AcuLaser C1100 Revision B
OPERATING PRINCIPLES Print Process 77
2.1.3 Technical Explanation of Print Process
2.1.3.1 Charging
At the “Charging” process, BCR (Bias Charge Roll) applies a uniform negative
potential to the drum which rotates at a fixed speed.
BCR keeps contact with the drum and moves together with it.
BCR is a conductive roller, that is negatively charged by HVPS, applies a negative
charge to the drum.
The drum surface is uniformly charged to a negative potential with DC bias
voltage.
The drum is made of conductive material (aluminum cylinder) coated with a
photosensitive material which becomes insulating material in darkness and
becomes conductive when it is subjected to light.
Figure 2-3.Charging Process