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    Image forming apparatus
    1.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US09256167B2

    公开(公告)日：2016-02-09

    申请号：US14449270

    申请日：2014-08-01

    申请人： Atsushi Nagata ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Yusuke Mitani ,  Kazuki Yogosawa

    发明人： Atsushi Nagata ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Yusuke Mitani ,  Kazuki Yogosawa

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1665 ,  G03G15/5058

    摘要： An image forming apparatus includes an image bearer; a toner image forming unit, a transfer unit, a detector, and a controller. The toner image forming unit forms a plurality of types of density detection patterns on the surface of the image bearer in mutually-different positions in a surface-movement direction of the image bearer. The density detection patterns have mutually-different lengths in a direction orthogonal to the surface-movement direction of the image bearer. The transfer unit transfers the density detection patterns onto the surface of the transfer member. The detector detects image densities of the density detection patterns transferred on the surface of the transfer member. The controller calculates an image density difference between the density detection patterns on a basis of a detection result obtained by the detector, and corrects a transfer bias for transferring a toner image on a basis of a value of the image density difference.

    摘要翻译： 图像形成装置包括图像载体; 调色剂图像形成单元，转印单元，检测器和控制器。 调色剂图像形成单元在图像承载体的表面移动方向上的相互不同的位置的图像载体的表面上形成多种类型的浓度检测图案。 密度检测图案在与图像载体的表面移动方向正交的方向上具有相互不同的长度。 转印单元将浓度检测图案转印到转印部件的表面上。 检测器检测在转印部件的表面上转印的浓度检测图案的图像浓度。 控制器基于由检测器获得的检测结果来计算浓度检测图案之间的图像浓度差，并且基于图像浓度差的值来校正用于转印调色剂图像的转印偏压。

    Image forming apparatus
    6.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US09046853B2

    公开(公告)日：2015-06-02

    申请号：US14209330

    申请日：2014-03-13

    申请人： Yuuji Wada ,  Atsushi Nagata

    发明人： Yuuji Wada ,  Atsushi Nagata

    IPC分类号： G03G15/08 ,  G03G15/00 ,  G03G15/01 ,  G03G15/16

    CPC分类号： G03G15/553 ,  G03G15/0189 ,  G03G15/1605 ,  G03G15/1675 ,  G03G15/556

    摘要： An image forming apparatus includes a primary transfer bias adjuster to adjust, in a second mode, a primary transfer bias by a correction amount in accordance with a degree of deterioration of a developing agent detected by a first developing agent condition detector so as to reduce a primary transfer current of the primary transfer bias upon transferring a toner image from a first image bearing member onto an intermediate transfer member, and to adjust, in a first mode, the primary transfer bias by a correction amount less than the correction amount in the second mode or not to adjust the primary transfer bias in accordance with the degree of deterioration of the developing agent detected by the first developing agent condition detector upon primarily transferring the toner image from the first image bearing member onto the intermediate transfer member.

    摘要翻译： 一种图像形成装置包括一次转印偏压调节器，用于根据由第一显影剂状态检测器检测到的显影剂的劣化程度，在第二模式中将一次转印偏压调整为校正量，从而减少 在将调色剂图像从第一图像承载部件转印到中间转印部件上时，一次转印偏压的一次转印电流，并且以第一模式将一次转印偏压调整小于第二转印偏差中的校正量的校正量 模式或不是根据在将调色剂图像从第一图像承载部件转印到中间转印部件上时由第一显影剂条件检测器检测到的显影剂的劣化程度来调整一次转印偏压。