Electrophotographic apparatus with improved corona charging

Details Electrophotographic apparatus with improved corona charging Electrophotographic apparatus with improved corona charging

1979-02-12

1980-10-14

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Electric charge generating or conducting means

With specific power supply

250326, H01T 1904

Patent

active

042284805

ABSTRACT:
In-place primary charging of an electrophotographic imaging member is effected by a corona discharge device which employs variably-biased AC energization of its discharge electrode. During a charging period the potential level of the image member is detected by a sensor, and the bias level of electrode energizing source is varied from an initial value above the nominal primary charge potential toward the nominal potential in response to signals from the sensor.

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