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    Image forming apparatus
    7.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US09395658B2

    公开(公告)日：2016-07-19

    申请号：US14962062

    申请日：2015-12-08

    申请人： Yuuji Wada ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

    发明人： Yuuji Wada ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

    IPC分类号： G03G15/16

    CPC分类号： G03G21/0005 ,  G03G15/1665 ,  G03G15/1675

    摘要： An image forming apparatus includes a belt-shaped image bearer; a transfer device disposed opposing to the image bearer; an opposed device disposed opposing to the transfer device; and a transfer bias power source. The image bearer is disposed along an outer circumferential surface of the transfer device at least one of an upstream side and a downstream side of the transfer portion in a direction of conveyance of the recording medium. The transfer bias power source cyclically alternates the transfer bias applied to the transfer portion, between a transfer directional bias in a transfer direction to transfer the toner image from the image bearer onto the recording medium and a reverse directional bias in a reverse direction of the transfer direction. The transfer bias power source applies the reverse directional bias during a time period longer than 50% of one cycle of the applied transfer bias in the one cycle.

    摘要翻译： 图像形成装置包括带状图像载体; 与所述图像载体相对设置的传送装置; 与传送装置相对设置的相对设备; 和转印偏压电源。 图像承载体沿传送装置的外周面沿传送部分的上游侧和下游侧中的至少一个沿记录介质的传送方向布置。 转印偏压电源周期性地交替施加到转印部分的转印偏压之间，在转印方向上的转印方向偏压之间，以将调色剂图像从图像载体转印到记录介质上，并且转印反转方向上的反向偏置 方向。 转移偏置电源在一个周期内的施加的转移偏压的一个周期的50％的时间段内施加反向偏置。

    IMAGE FORMING APPARATUS
    8.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开
    图像形成装置

    公开(公告)号：US20160306317A1

    公开(公告)日：2016-10-20

    申请号：US15189699

    申请日：2016-06-22

    申请人： YUUJI WADA ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugirua ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

    发明人： YUUJI WADA ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugirua ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

    IPC分类号： G03G21/00 ,  G03G15/16

    CPC分类号： G03G21/0005 ,  G03G15/1665 ,  G03G15/1675

    摘要： An image forming apparatus comprises a rotatable image bearer, a toner image forming device, a transfer device, a transfer bias power source, and a cleaner. The toner image forming device is to form a toner image on the image bearer. The transfer device contacts a surface of the image bearer to form a transfer nip between the transfer device and the image bearer. The transfer bias power source is to output a transfer bias to transfer the toner image from the image bearer onto a recording medium in the transfer nip. The cleaner is disposed downstream from the transfer nip in a direction of rotation of the image bearer, to electrostatically attract and remove toner from the surface of the image bearer to a surface of the cleaner. The transfer bias includes an alternating current component.

    摘要翻译： 图像形成装置包括可旋转图像载体，调色剂图像形成装置，转印装置，转印偏压电源和清洁器。 调色剂图像形成装置将在图像载体上形成调色剂图像。 传送装置接触图像载体的表面以在传送装置和图像载体之间形成传送夹持部。 转印偏压电源是输出转印偏压，以将调色剂图像从图像载体转印到转印辊隙中的记录介质上。 清洁器沿图像承载体的旋转方向设置在转印辊隙的下游，以将静电吸引和从图像载体的表面去除调色剂到清洁器的表面。 转印偏压包括交流分量。