KYOCERA FS-1010 User Manual download pdf (Page 60)

4-9

FS-1010

Drum surface potential

The laser beam is continually switched on and off depending on the print data. It is on for a black

(exposed) dot and off for a white (blank) dot. Since the drum surface is evenly charged, whenever

it is illuminated by the laser beam, the electrical resistance of the photoconductor is reduced and the

potential on the photoconductor is also lowered. Resulted on the drum surface is an electrostatic

image which represents the data to print. Note that the area to be printed black has the low potential,

constituting a “positively exposed” image.

Figure 4-1-7 Drum surface potential

Aluminum

cylinder

OPC

layer

Laser beam

Charged surface potential

+400±15 V

Exposed surface potential

approximately +60 to +80 V

Drum

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KYOCERA FS-1010 User Manual Page 60