发明名称 Image forming apparatus having different modes for preventing defective cleaning
摘要 In a color image forming apparatus of a tandem type, a full color image forming mode and a monochrome image forming mode are made selectable. In the monochrome image forming mode, toner is supplied between photosensitive drums for colors that do not contribute to image formation and cleaning devices therefor. Consequently, defective cleaning can be prevented and formation of high quality images becomes possible.
申请公布号 US6771924(B2) 申请公布日期 2004.08.03
申请号 US20020233510 申请日期 2002.09.04
申请人 CANON KABUSHIKI KAISHA 发明人 MATSUGUMA MINORU
分类号 G03G15/01;(IPC1-7):G03G15/01;G03G21/00 主分类号 G03G15/01
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