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    Image forming apparatus and image forming method
    1.
    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：US09310722B2

    公开(公告)日：2016-04-12

    申请号：US14005770

    申请日：2012-03-16

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

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

    IPC分类号： G03G15/16 ,  G03G15/01

    CPC分类号： G03G15/1675 ,  G03G15/0131 ,  G03G15/0189 ,  G03G15/1665 ,  G03G15/80

    摘要： [Problem to be solved] To provide an image forming apparatus for suppressing formations of white spots and achieving high quality images, while obtaining sufficient image densities in both of the recessed parts and the projected parts of a recording medium surface.[Solution] An image forming apparatus includes a transfer member 36 that abuts against a surface of an image carrier carrying a toner image and forms a transfer nip, and a power supply 39 that outputs a voltage (transfer bias) for causing the toner image on the image carrier to be transferred onto a recording medium P nipped in the transfer nip. The voltage is switched alternatingly between a transfer direction voltage for causing the toner image to be transferred from the image carrier onto the recording medium and a voltage having an opposite polarity of the transfer direction voltage when the toner image on the image carrier is to be transferred onto the recording medium. A time-averaged value (Vave) of the voltage is set to a transfer direction polarity that causes the toner image to be transferred from the image carrier onto the recording medium, and is set more in the transfer direction than a median voltage (Voff) between a maximum and a minimum of the voltage.

    摘要翻译： [待解决的问题]提供一种用于抑制白点的形成并实现高质量图像的图像形成装置，同时在记录介质表面的凹陷部分和投影部分中获得足够的图像密度。 图像形成装置包括：转印构件36，其抵靠承载调色剂图像的图像载体的表面并形成转印压区;以及电源39，其输出用于使调色剂图像打开的电压（转印偏压） 要传送到夹持在转印辊隙中的记录介质P上的图像载体。 电压在用于使调色剂图像从图像载体转印到记录介质上的转印方向电压和当图像载体上的调色剂图像将被转印时具有与转印方向电压相反的极性的电压交替切换 到记录介质上。 将电压的时间平均值（Vave）设定为使得调色剂图像从图像载体转印到记录介质上的转印方向极性，并且在转印方向上设定为比中值电压（Voff）更大， 在最大和最小的电压之间。

    Transfer device and image forming apparatus
    2.
    发明授权
    Transfer device and image forming apparatus 有权
    转印装置和图像形成装置

    公开(公告)号：US08818221B2

    公开(公告)日：2014-08-26

    申请号：US13406041

    申请日：2012-02-27

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

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

    IPC分类号： G03G15/20

    CPC分类号： G03G15/1605 ,  G03G15/1675

    摘要： Described herein is a transfer device that transfers a visualized image formed on an image carrier onto a recording medium. The transfer device includes an image carrier that carries a toner image, a contacting member that contacts the image carrier via a recording medium and a power source that outputs a transfer bias to transfer the toner image from the image carrier onto the recording medium at a transfer nip formed between the image carrier and the contacting member. The transfer bias has a direct current component and an alternating current (AC) component superimposed on the direct current component. The transfer device also includes a controller that controls the power source such that the controller controls a level of the direct current component output from the power source by a constant current control.

    摘要翻译： 这里描述了将形成在图像载体上的可视化图像传送到记录介质上的传送装置。 转印装置包括承载调色剂图像的图像载体，经由记录介质接触图像载体的接触构件和输出转印偏压的电源，以将调色剂图像从图像载体转印到记录介质上，转印 形成在图像载体和接触构件之间的压区。 转印偏压具有叠加在直流分量上的直流分量和交流（AC）分量。 传送装置还包括控制器，其控制电源，使得控制器通过恒定电流控制来控制从电源输出的直流分量的电平。

    Image forming apparatus for obtaining good image quality over time
    3.
    发明授权
    Image forming apparatus for obtaining good image quality over time 有权
    用于随时间获得良好图像质量的图像形成装置

    公开(公告)号：US08750736B2

    公开(公告)日：2014-06-10

    申请号：US13415077

    申请日：2012-03-08

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

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

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675

    摘要： An image forming apparatus includes an image carrying member to carry a toner image, a nip forming member to form a transfer nip with the image carrying member, and a transfer bias outputting unit to output a transfer bias to transfer the toner image from the image carrying member to a recording medium. The transfer bias is composed of a direct current (DC) component and an alternating current (AC) component, and a least one of the DC component and the AC component is subjected to constant voltage control. When constant current control is conducted at a timing other than when the toner image is being transferred from the image carrying member to the recording medium, a detection bias voltage at the transfer nip is detected, and the voltage of at least one of the DC component and the AC component is controlled based on the detected detection bias voltage.

    摘要翻译： 图像形成装置包括：承载构件以承载调色剂图像，夹持形成构件以与图像承载构件形成转印压区;以及转印偏压输出单元，用于输出转印偏压以从承载图像的图像转印调色剂图像 成员到记录介质。 转移偏压由直流（DC）分量和交流（AC）分量组成，直流分量和交流分量中的至少一个进行恒压控制。 当在除了从图像承载构件向记录介质传送调色剂图像之外的定时进行恒定电流控制时，检测转印间隙处的检测偏压，并且至少一个DC分量 并且基于检测到的检测偏压来控制AC分量。

    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。

    Transfer device with transfer voltage unit and image forming apparatus using the same
    9.
    发明授权
    Transfer device with transfer voltage unit and image forming apparatus using the same 有权
    具有转印电压单元的转印装置和使用其的成像装置

    公开(公告)号：US09081335B2

    公开(公告)日：2015-07-14

    申请号：US13693304

    申请日：2012-12-04

    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 ,  G03G15/01

    CPC分类号： G03G15/1665 ,  G03G15/0189 ,  G03G15/1675 ,  G03G2215/0129

    摘要： According to an embodiment, provided is a transfer device including: a nip forming member that abuts against a surface of an image carrier carrying a toner image; and a transfer voltage application unit that applies a transfer voltage including a DC component and an AC component. The transfer voltage is an alternating voltage in which a supply voltage having polarity in a transfer direction and a return voltage having polarity opposite. A time average value Vave of the transfer voltage is set to be at polarity in the transfer direction and is set to be closer to a peak value Vt of the supply voltage relative to a center value Voff between a maximum and minimum value. An absolute value of the peak value Vr of the return voltage is set to be larger than an absolute value of the time average value Vave.

    摘要翻译： 根据实施例，提供了一种转印装置，包括：夹持部件，其邻接承载调色剂图像的图像载体的表面; 以及转印电压施加单元，其施加包括DC分量和AC分量的转印电压。 转印电压是交流电压，其中具有传输方向极性的电源电压和极性相反的返回电压。 将转印电压的时间平均值Vave设定为传送方向的极性，并将其设定为更接近于电源电压相对于最大值与最小值之间的中心值Voff的峰值Vt。 将返回电压的峰值Vr的绝对值设定为大于时间平均值Vave的绝对值。

    Transfer device, image forming apparatus, and transfer method
    10.
    发明授权
    Transfer device, image forming apparatus, and transfer method 有权
    转印装置，成像装置和转印方法

    公开(公告)号：US08923716B2

    公开(公告)日：2014-12-30

    申请号：US13208673

    申请日：2011-08-12

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

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

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1605 ,  G03G2215/0129

    摘要： A transfer device includes an image carrier that carries a toner image; a nip forming member that forms a transfer nip between the nip forming member and the image carrier by contacting with a front surface of the image carrier; and a transfer bias applying unit that applies a transfer bias, thereby transferring the toner image carried on the image carrier to a recording material at a position of the transfer nip. The transfer bias applying unit applies the transfer bias in which an AC component and a DC component are superimposed and in which a peak-to-peak voltage of the AC component is larger than 6 times an absolute value of a voltage of the DC component.

    摘要翻译： 转印装置包括承载调色剂图像的图像载体; 辊隙形成部件，其通过与图像载体的前表面接触而在辊隙形成部件和图像载体之间形成转印辊隙; 以及施加转印偏压的转印偏压施加单元，从而将承载在图像载体上的调色剂图像转印到转印辊隙的位置处的记录材料。 转印偏压施加单元施加交流分量和直流分量叠加的转印偏压，其中交流分量的峰 - 峰电压大于直流分量的电压的绝对值的6倍。