Process cartridge, electrophotographic apparatus a

专利名称：Process cartridge, electrophotographic

apparatus and image-forming method

发明人：Kobayashi, Hiroyuki,Nakazawa,

Akihiko,Tanaka, Atsushi,Ashibe,Tsunenori,Kusaba, Takashi,Matsuda,Hidekazu,Sakurai, Yuji

申请号：EP02011775.0申请日：20020527公开号：EP1262842A2公开日：20021204

专利附图：

摘要：A process cartridge is disclosed integrally supporting an electrophotographicphotosensitive member, an intermediate transfer belt, a primary-transfer means fortransferring a toner image primarily from the electrophotographic photosensitivemember to the intermediate transfer belt, a charge-providing means for providing thetoner on the intermediate transfer belt with electric charges having a polarity reverse tothe polarity the toner has at the time of the primary transfer and returning the toner onthe intermediate transfer belt to the electrophotographic photosensitive member at thecontact zone to clean the intermediate transfer belt, and an electrophotographic-photosensitive-member cleaning means. The process cartridge is dividable into anelectrophotographic photosensitive member unit and an intermediate transfer belt unitand has a joining means which joins the two units. The peripheral length and averagethickness of the intermediate transfer belt and the diameter of at least one of rollersover and around which the intermediate transfer belt is placed satisfy specific conditions.Also disclosed are an electrophotographic apparatus having this process cartridge, andan image-forming method making use of the electrophotographic apparatus.

申请人：CANON KABUSHIKI KAISHA

地址：3-30-2 Shimomaruko Ohta-ku, Tokyo JP

国籍：JP

代理机构：Leson, Thomas Johannes Alois, Dipl.-Ing.

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