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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：US09020382B2

    公开(公告)日：2015-04-28

    申请号：US13690408

    申请日：2012-11-30

    申请人： Shinji Aoki ,  Haruo Iimura ,  Yasuhiko Ogino ,  Tadashi Kasai ,  Naomi Sugimoto ,  Shinya Tanaka ,  Keigo Nakamura

    发明人： Shinji Aoki ,  Haruo Iimura ,  Yasuhiko Ogino ,  Tadashi Kasai ,  Naomi Sugimoto ,  Shinya Tanaka ,  Keigo Nakamura

    IPC分类号： G03G15/16 ,  G03G15/01

    CPC分类号： G03G15/0131 ,  G03G15/0189 ,  G03G15/1675 ,  G03G2215/0129

    摘要： An image forming apparatus includes a nip forming member and a transfer bias output device that outputs a transfer bias to form a transfer electric field in a transfer nip between the nip forming member and an intermediate transfer member. Upon transfer of a composite toner image including a particular toner image onto a recording medium in the transfer nip, the transfer bias output device outputs the transfer bias including a first superimposed bias in which a direct current (DC) component is superimposed on an alternating current (AC) component. Upon transfer of the composite toner image without the particular toner image onto the recording medium in the transfer nip, the transfer bias output device outputs one of the transfer bias including a second superimposed bias having a peak-to-peak value of the AC component smaller than that of the first superimposed bias and the transfer bias including only the DC component.

    摘要翻译： 图像形成装置包括辊隙形成构件和转印偏压输出装置，其输送转印偏压以在辊隙形成构件和中间转印构件之间的转印辊隙中形成转印电场。 在将包括特定调色剂图像的复合调色剂图像转印到转印辊隙中的记录介质上时，转印偏压输出装置输出包括其中直流（DC）分量叠加在交流电上的第一重叠偏压的转印偏压 （AC）组件。 在转印偏压输出装置将没有特定调色剂图像的复合调色剂图像转印到记录介质上时，转印偏压输出装置输出包括具有AC分量的峰 - 峰值的第二叠加偏置的转印偏压中的一个较小 比第一重叠偏置和仅包括直流分量的转印偏压的偏置。

    Transfer device and image forming apparatus incorporating same
    2.
    发明授权
    Transfer device and image forming apparatus incorporating same 有权
    转印装置和包含其的图像形成装置

    公开(公告)号：US08781348B2

    公开(公告)日：2014-07-15

    申请号：US13206957

    申请日：2011-08-10

    申请人： Yasuhiko Ogino ,  Haruo Iimura ,  Shinji Aoki ,  Keigo Nakamura

    发明人： Yasuhiko Ogino ,  Haruo Iimura ,  Shinji Aoki ,  Keigo Nakamura

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G15/1605

    摘要： A transfer device includes a controller that controls a transfer bias supply to cause a transfer bias to increase, between an image carrier and a first rotary body disposed opposite the image carrier, a potential of the first rotary body toward an opposite polarity to a charge polarity of toner of a toner image on the image carrier to be higher than a potential of the image carrier, and to change, on the basis of identified recording medium type, a returning peak value which is one of a peak value of positive polarity and a peak value of negative polarity of the transfer bias and which generates an electric field that causes the toner having moved to the recording medium from the image carrier to return to the image carrier from the recording medium in a transfer nip.

    摘要翻译： 传送装置包括控制器，其控制转印偏压供应，以使图像载体和与图像载体相对设置的第一旋转体之间的转印偏压增大，第一旋转体的电位朝向与极性相反的极性 使得图像载体上的调色剂图像的调色剂高于图像载体的电位，并且基于所识别的记录介质类型改变作为正极性峰值的返回峰值和 转印偏压的负极性的峰值，并且产生使得调色剂从图像载体移动到记录介质的电场，从而在转印辊隙中从记录介质返回到图像载体。

    IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
    3.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 有权
    图像形成装置和图像形成方法

    公开(公告)号：US20120237234A1

    公开(公告)日：2012-09-20

    申请号：US13412244

    申请日：2012-03-05

    申请人： Naomi SUGIMOTO ,  Shinya Tanaka ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Keigo Nakamura

    发明人： Naomi SUGIMOTO ,  Shinya Tanaka ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Keigo Nakamura

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675

    摘要： An image forming apparatus includes an image carrier to carry a toner image, a transfer member to form a transfer nip by contacting the image carrier surface, and a power supply to output a voltage to the recording material captured in the transfer nip so as to transfer the toner image formed on the image carrier surface. The voltage is switching alternately between a voltage in the transfer direction and a voltage opposite to the voltage in the transfer direction, and a time average value (Vave) of the voltage is set to have a polarity of the transfer direction, and is set to a value in the transfer voltage side, and a change mode to change a cycle of the voltage output from the power supply can be changed based on the toner deterioration information which determines the deterioration status of the toner.

    摘要翻译： 图像形成装置包括：承载调色剂图像的图像载体;通过接触图像载体表面而形成转印夹持部的转印部件;以及电源，向输送辊隙中捕获的记录材料输出电压， 形成在图像载体表面上的调色剂图像。 电压在传送方向上的电压和与传送方向的电压相反的电压之间交替切换，并且电压的时间平均值（Vave）被设置为具有传送方向的极性，并且被设置为 可以基于确定调色剂的劣化状态的调色剂劣化信息来改变转印电压侧的值和改变从电源输出的电压的周期的改变模式。

    Image forming apparatus and image forming method
    5.
    发明授权
    Image forming apparatus and image forming method 有权
    图像形成装置及图像形成方法

    公开(公告)号：US09285723B2

    公开(公告)日：2016-03-15

    申请号：US14188197

    申请日：2014-02-24

    申请人： Naomi Sugimoto ,  Shinya Tanaka ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Keigo Nakamura

    发明人： Naomi Sugimoto ,  Shinya Tanaka ,  Haruo Iimura ,  Shinji Aoki ,  Yasuhiko Ogino ,  Keigo Nakamura

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675

    摘要： An image forming apparatus includes an image carrier to carry a toner image, a transfer member to form a transfer nip by contacting the image carrier surface, and a power supply to output a voltage to the recording material captured in the transfer nip so as to transfer the toner image formed on the image carrier surface. The voltage is switching alternately between a voltage in the transfer direction and a voltage opposite to the voltage in the transfer direction, and a time average value (Vave) of the voltage is set to have a polarity of the transfer direction, and is set to a value in the transfer voltage side, and a change mode to change a cycle of the voltage output from the power supply can be changed based on the toner deterioration information which determines the deterioration status of the toner.

    摘要翻译： 图像形成装置包括：承载调色剂图像的图像载体;通过接触图像载体表面而形成转印夹持部的转印部件;以及电源，向输送辊隙中捕获的记录材料输出电压， 形成在图像载体表面上的调色剂图像。 电压在传送方向上的电压和与传送方向的电压相反的电压之间交替切换，并且电压的时间平均值（Vave）被设置为具有传送方向的极性，并且被设置为 可以基于确定调色剂的劣化状态的调色剂劣化信息来改变转印电压侧的值和改变从电源输出的电压的周期的改变模式。

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

    公开(公告)号：US08909079B2

    公开(公告)日：2014-12-09

    申请号：US13207803

    申请日：2011-08-11

    申请人： Shinji Aoki ,  Haruo Iimura ,  Yasuhiko Ogino ,  Keigo Nakamura ,  Masahide Nakaya ,  Tomokazu Takeuchi

    发明人： Shinji Aoki ,  Haruo Iimura ,  Yasuhiko Ogino ,  Keigo Nakamura ,  Masahide Nakaya ,  Tomokazu Takeuchi

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G2215/0129

    摘要： An image forming apparatus includes a transfer bias generator including a transfer bias supply that supplies a transfer bias to a transfer nip formed between an image carrier and a first rotary body, and a controller that detects a toner adhesion amount at a predetermined region of the image carrier located immediately upstream from the transfer nip and having a predetermined length in a moving direction of the image carrier. The transfer bias generator outputs at least an alternating current component under one of constant voltage control and constant current control and changes a target output value of the alternating current component according to the toner adhesion amount detected by the controller.

    摘要翻译： 图像形成装置包括转印偏压发生器，该转印偏压发生器包括向图像载体和第一旋转体之间形成的转印压区提供转印偏压的转印偏压产生器，以及检测图像的预定区域处的调色剂附着量的控制器 位于紧靠转印辊隙上游并且在图像载体移动方向上具有预定长度的载体。 转移偏压发生器在恒定电压控制和恒定电流控制之一下输出至少一个交流分量，并根据控制器检测到的调色剂附着量改变交流分量的目标输出值。

    IMAGE FORMING APPARATUS
    8.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20120045237A1

    公开(公告)日：2012-02-23

    申请号：US13207803

    申请日：2011-08-11

    申请人： Shinji AOKI ,  Haruo Iimura ,  Yasuhiko Ogino ,  Keigo Nakamura ,  Masahide Nakaya ,  Tomokazu Takeuchi

    发明人： Shinji AOKI ,  Haruo Iimura ,  Yasuhiko Ogino ,  Keigo Nakamura ,  Masahide Nakaya ,  Tomokazu Takeuchi

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G2215/0129

    摘要： An image forming apparatus includes a transfer bias generator including a transfer bias supply that supplies a transfer bias to a transfer nip formed between an image carrier and a first rotary body, and a controller that detects a toner adhesion amount at a predetermined region of the image carrier located immediately upstream from the transfer nip and having a predetermined length in a moving direction of the image carrier. The transfer bias generator outputs at least an alternating current component under one of constant voltage control and constant current control and changes a target output value of the alternating current component according to the toner adhesion amount detected by the controller.

    摘要翻译： 图像形成装置包括转印偏压发生器，该转印偏压发生器包括向图像载体和第一旋转体之间形成的转印压区提供转印偏压的转印偏压产生器，以及检测图像的预定区域处的调色剂附着量的控制器 位于紧靠转印辊隙上游并且在图像载体移动方向上具有预定长度的载体。 转移偏压发生器在恒定电压控制和恒定电流控制之一下输出至少一个交流分量，并根据控制器检测到的调色剂附着量改变交流分量的目标输出值。

    Image forming apparatus including a transfer bias output device
    9.
    发明授权
    Image forming apparatus including a transfer bias output device 有权

    公开(公告)号：US09658579B2

    公开(公告)日：2017-05-23

    申请号：US14709567

    申请日：2015-05-12

    申请人： Keigo Nakamura ,  Haruo Iimura ,  Shinji Aoki

    发明人： Keigo Nakamura ,  Haruo Iimura ,  Shinji Aoki

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1665 ,  G03G15/1675

    摘要： An image forming apparatus includes an image bearer to bear a toner image, a toner image forming device to form the toner image on the image bearer, a nip forming device to contact the image bearer to form a transfer nip between the image bearer and the nip forming device, a transfer bias output device to output a transfer bias including a DC component and an AC component to transfer the toner image from the image bearer onto a recording medium interposed in the transfer nip, and a controller operatively connected to the transfer bias output device to adjust a frequency f of the AC component of the transfer bias in accordance with an image area ratio A such that the frequency f is at its minimum with a predetermined image area ratio Amin %, where Amin % is greater than 0 but lower than an image area ratio of a solid image.