发明名称 Image forming apparatus
摘要 In an image forming apparatus, a control portion forms a restoring toner image (restoring toner band) at a position, in which the refreshing toner image overlaps with a control image with respect to a longitudinal direction of a secondary transfer roller, during post-rotation after image formation in an image forming job is completed. The restoring toner band is formed in a length corresponding to 3 full circumferences of the secondary transfer roller for one-sheet image forming job, 2 full circumferences of the secondary transfer roller for 5-sheet image forming job, and one full circumference of the secondary transfer roller for 10-sheet image forming job. In the case of an image forming job on 50 sheets or more, a lowering in cleaning performance of a secondary transfer member cleaning device for the secondary transfer roller is not caused to occur, so that the restoring toner band is not formed.
申请公布号 US8326163(B2) 申请公布日期 2012.12.04
申请号 US201213421050 申请日期 2012.03.15
申请人 AI RYUTA;CANON KABUSHIKI KAISHA 发明人 AI RYUTA
分类号 G03G15/00 主分类号 G03G15/00
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