Print Process
SM 6-9 G179
Detailed
Descriptions
6.3 PRINT PROCESS
6.3.1 OVERVIEW
Drum charge
The charge roller [A] gives a negative charge to the organic photoconductive (OPC) drum.
The charge remains on the surface of the drum because the OPC layer has a high
electrical resistance in the dark.
Laser exposure
The image data is projected onto the drum the drum by two laser beams [B], which form an
electrostatic latent image on the drum surface. The amount of charge remaining as a latent
image on the drum depends on the laser beam intensity, controlled by the BCU.
Development
The magnetic developer brush on the development roller [C] contacts the latent image on
the drum. Toner particles are electrostatically attracted to the areas of the drum surface
where the laser reduced the negative charge on the drum.
Image transfer
Paper is fed into the area between the drum surface and the transfer belt [D] at the proper
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