Image Formation System 5-27
Conditioning the Drum
After the Drum is cleaned, it must be conditioned. This process
consists of applying a uniform negative charge on the surface of the
Drum with the Primary Charging Roller. The Primary Charging Roller
is coated with conductive rubber with an AC bias applied to erase any
residual charges and maintain a constant Drum surface to create a
uniform negative potential on the Drum surface. The amount of DC
voltage is modified by the print density setting.
Figure 5-13 Primary Charging Roller
For more information on the LaserJet 4000 / 4050 Visit www.PrinterSupplies.com 800-551-1943
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