Patent ID: 6882806
Filing Date: 2005-04-19
Classification: G03G

Abstract:
1. A charging apparatus, comprising: a charging member, contactable to a member to be charged during first and second times, wherein said charging member is configured and positioned to charge the member to be charged, a voltage application device configured and positioned to be capable of applying first alternating voltages having different first peak-to-peak voltages to said charging member when said charging member contacts, during the first time, the member to be charged, wherein an alternating current passing through the member to be charged in response to each first alternating voltage applied to said charging member is detectable, and a determination device configured and positioned to determine a second peak-to-peak voltage to be applied to said charging member on the basis of a peak-to-peak voltage corresponding to a minimum current, said second peak-to-peak voltage being applied to said charging member when said charging member contacts, during the second time, the member to be charged, wherein the minimum current is not less than a predetermined current, and is the lowest alternating current of alternating currents passing through the member to be charged when the first alternating voltages are applied to said charging member.