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    • 6. 发明授权
    • Image forming apparatus and image forming method with cleaner portion
    • 具有清洁部分的图像形成装置和图像形成方法
    • US07477863B2
    • 2009-01-13
    • US11701435
    • 2007-02-02
    • Takeshi WatanabeMasashi TakahashiMinoru YoshidaShoko Shimmura
    • Takeshi WatanabeMasashi TakahashiMinoru YoshidaShoko Shimmura
    • G03G21/00
    • G03G21/0064G03G2215/0119
    • A color image forming apparatus includes an intermediate transfer member, a first forming portion having a first transfer unit, a second forming portion provided downstream from the first forming portion, a third forming portion provided downstream from the second forming portion, a fourth forming portion provided downstream from the third forming portion, and a control portion. The control portion controls a bias of at least one of the corresponding developing unit and the corresponding transfer unit, when transfer of the toner image from the intermediate transfer member to the recording medium is completed, so that a toner-image residue toner material resting on the intermediate transfer member is returned to the corresponding developing unit through the image bearing member of at least one of the first to fourth forming portions.
    • 彩色图像形成装置包括中间转印部件,具有第一转印单元的第一成形部分和设置在第一成形部分下游的第二成形部分,设置在第二成形部分下游的第三成形部分, 在第三形成部分的下游,以及控制部分。 当调色剂图像从中间转印部件转印到记录介质上时,控制部分控制对应的显影单元和相应的转印单元中的至少一个的偏压,使得调色剂图像残留调色剂材料搁置在 中间转印构件通过第一至第四形成部分中的至少一个的图像承载构件返回到相应的显影单元。