Konishiroku Photo Industry Co., Ltd.

Kastuhiro Shukuri

Shigeru Inowa

Yoshio Yamazaki

Takayoshi Hashimoto

Kiyoaki Kawamoto

A cleaning system for an electrostatic copying apparatus has a cleaning roller in pressure contact with a toner supporting member for removing residual toner therefrom. The cleaning roller is impressed with a bias voltage of polarity opposite to the electric charge held by the residual toner. The cleaning roller comprises an axle, a conductive elastic layer around the axle, and a thin porous film formed as an outer most layer over the elastic layer. The thin film is preferably made of polytetrafluorethylene and is a porous and soft film. The cleaning system also includes a discharging electrode arranged before the cleaning roller, and a scraper for removing toner adhering to the cleaning roller.

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Hachioji, Japan

Kastuhiro Shukuri