Image-formation system
Laser printing requires the interaction of several different technologies, including electronics, optics,
and electrophotographics, to provide a printed page. Each process functions independently and must
be coordinated with the other printer processes. Image formation consists of the following five
processes:
●
electrostatic latent-image formation
●
developing
●
transfer
●
fusing
●
drum cleaning
The five processes contain eight steps.
Figure 5-7 Image-formation system
Step 1: Primary charging
DC and AC biases are applied to the primary charging roller, which transfers a uniform negative
potential to the photosensitive drum.
Figure 5-8 Primary charging
Step 2: Laser beam exposure
ENWW Image-formation system 79
For more information on the LaserJet P2015 Visit www.PrinterSupplies.com 800-551-1943
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