PRINTING PROCESS OVERVIEW
G065 6-8 SM
6.3 PRINTING PROCESS 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 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
BICU.
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.
G065D111.WMF
[D]
[E]
[F]
[C]
[B]
[A]
[H]
[G]
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