43984801TH
Rev.1
17 /
Oki Data CONFIDENTIAL
2. Operational explanation
2. Operational explanation
2.1 Electrophotographic process mechanism
(1) Electrophotographic process
The following describes the overview of electrophotographic process.
1. Charging
Equ
ally charge the surface of image drum by applying negative voltage to the charged roller due to
negative charge.
2. Exposure
The l
ight from LED Head is exposed on the negative-charged surface of image drum. The surface
electrical potential of the exposed part of image drum surface becomes lower. Then forms electrostatic
latent image.
3. Development
Neg
ative-charged toner is attracted to the electrostatic latent image due to electrostatic while touching
the image drum. Then forms viewable image.
4. Transfer
Ove
rlap paper on the surface of OPC drum, from the backside of paper transfer toner image to the
paper by applying electrical charge by transfer roller.
5. Drum cleaning
The remaining toner on the image drum that is not transferred is made to be equable by cleaning roller.
And is temporarily attracted to the cleaning roller due to electrostatic.
6. Fusing
The t
oner image that is transferred to paper is fused on paper by heat and pressure.
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