High voltage power supply

The high-voltage power supply delivers the high-voltage biases to the following components used to transfer toner during the image-formation process:

●Primary-charging roller (in the cartridge)

●Developing roller (in the cartridge)

●Primary-transfer roller

●Secondary-transfer roller

Figure 1-4High voltage power supply circuits

Y

M

C

K

The high voltage power supply contains several separate circuits.

Table 1-8High voltage power supply circuits

Circuit

Description

 

 

Primary-charging-bias generation

DC negative bias is applied to the surface of the photosensitive drum to prepare it

 

for image formation.

 

 

Developing-bias generation

DC negative bias adheres the toner to each photosensitive drum during the image-

 

formation process.

 

 

10 Chapter 1 Theory of operation

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