Ricoh Company, Ltd.

Hiroshi Yosinaga

Hitoshi Ishibashi

Masumi Sato

Yukiko Iwasaki

Takatsugu Fujishiro

Masami Hiramatsu

To prevent deterioration of charge performance, which is caused by wear of a gap control member that keeps a charge roller into non-contact with the image carrier, the charge roller is brought into contact with a surface of a photosensitive drum via a pair of tape members as the gap control member that contacts with a coat and non-charge portion of the photosensitive drum. A gap G can be formed between an effective charge width portion of the charge roller and the surface of the photosensitive drum.

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Ichikawa, Japan

Hiroshi Yosinaga