Charging apparatus determining a peak-to-peak voltage to be...

Electrophotography – Control of electrophotography process – Control of charging

Reexamination Certificate

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C399S176000

Reexamination Certificate

active

06882806

ABSTRACT:
A charging apparatus includes a charging member, contactably provided to a member to be charged, for charging the member to be charged; a voltage application device for applying alternating voltages having different peak-to-peak voltages to the charging member; and a determination device for determining a peak-to-peak voltage to be applied to the charging member with respect to a second area of the member to be charged, on the basis of a peak-to-peak voltage corresponding to a minimum current which is not less than a predetermined current of alternating currents through the member to be charged when the alternating voltages having the different peak-to-peak voltages are applied to the charging member with respect to a first area of the member to be charged.

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