Charging member and image forming apparatus

摘要

A charging blade for charging a surface of an image bearing drum by contacting thereto includes a charging portion for effecting electric discharge to the surface of the drum; a non-charging portion not effecting the electric discharge to the surface of the drum, wherein the non-charging portion can contact the drum to provide a dischargeable gap between the charge portion and the drum, and at least a part the non-charging portion is made of a substance having a resistance higher than that of the charge portion to prevent no discharge occurs from the non-charging portion to the surface of the drum; and a support for the non-charging portion and the charge portion, wherein the non-charging portion and the charge portion are separation members and are not contacted to each other.

主权项

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 the electric discharge to the surface of the image bearing member, wherein said non-charging portion is provided at a free end portion of said blade-like charging member and is capable of contacting the image bearing member to provide a dischargeable gap between said charging portion and the image bearing member, and at least a part said non-charging portion is made of a substance having a resistance higher than that of said charging portion to prevent discharge from occurring from said non-charging portion to the surface of the image bearing member; and a supporting portion supporting said non-charging portion and said charging portion with space between said non-charging portion and said charging portion to prevent contact between said non-charging portion and said charging portion.