Patent ID: 8989629
Filing Date: 2015-03-24
Classification: G03G

Abstract:
1. A blade-like charging member for charging a surface of an image bearing member by contacting thereto and by being supplied with a voltage, said charging member comprising: a charging portion for effecting electric discharge to the surface of the image bearing member; a non-charging portion not effecting electric discharge to the surface of the image bearing member, said non-charging portion capable of contacting the image bearing member with maintaining an electrically dischargeable gap between said charging portion and the image bearing member; and an electrode portion, wherein at least a part of said non-charging portion is made of a material having a higher resistance than that of said charging portion so as to prevent electric discharge between said non-charging portion and the surface of the image bearing member, and said non-charging portion is contacted to and slidable on the surface of the image bearing member over a range not less than a longitudinal dimension of said charging portion, wherein said charging portion electrically discharges at a discharge position by being supplied with a voltage to said electrode portion, and wherein a shortest distance between an end portion the discharge position with respect to a longitudinal direction of said image bearing member and an end portion of said electrode portion with respect to the longitudinal direction of said image bearing member is longer than a shortest distance between the discharge position and a central portion of said electrode portion with respect to the longitudinal direction of said image bearing member.