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1. 发明授权

US09310722B2 Image forming apparatus and image forming method 有权
标题翻译：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。

2. 发明申请

US20170146931A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170146931A1
公开(公告)日：2017-05-25
申请号：US15389810
申请日：2016-12-23
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 , G03G15/00
CPC分类号： G03G15/1675 , G03G15/0131 , G03G15/0189 , G03G15/1665 , G03G15/80
摘要： An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.

3. 发明授权

US09020382B2 Image forming apparatus 有权
标题翻译：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。

4. 发明授权

US09285723B2 Image forming apparatus and image forming method 有权
标题翻译：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。

5. 发明授权

US09335674B2 Transfer device with transfer voltage unit and image forming apparatus using the same 有权
公开(公告)号：US09335674B2
公开(公告)日：2016-05-10
申请号：US14742271
申请日：2015-06-17
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.

6. 发明授权

US09081335B2 Transfer device with transfer voltage unit and image forming apparatus using the same 有权
标题翻译：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。

7. 发明授权

US08712267B2 Image forming apparatus and image forming method 有权
标题翻译：图像形成装置及图像形成方法
公开(公告)号：US08712267B2
公开(公告)日：2014-04-29
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。

8. 发明申请

US20130148993A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130148993A1
公开(公告)日：2013-06-13
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。

9. 发明申请

US20140010562A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 有权
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US20140010562A1
公开(公告)日：2014-01-09
申请号：US14005770
申请日：2012-03-16
申请人： Shinya Tanaka , Naomi Sugimoto , Haruo Iimura , Shinji Aoki , Yasuhiko Ogino
发明人： Shinya Tanaka , Naomi Sugimoto , Haruo Iimura , Shinji Aoki , Yasuhiko Ogino
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/0131 , G03G15/0189 , G03G15/1665 , G03G15/80
摘要： An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
摘要翻译：图像形成装置包括：传送构件，被配置为抵靠用于承载调色剂图像的图像载体以形成转印夹持部; 以及电源，被配置为输出用于将图像载体上的调色剂图像转印到夹在转印夹持部中的记录介质上的偏置电压。偏置电压包括用于将调色剂图像从传送方向从图像载体转印到记录介质上的第一电压和具有与第一电压相反极性的第二电压，第一和第二电压被交替地输出。将偏置电压的时间平均值设定为传送方向上的极性，并相对于偏置电压的最大值和最小值之间的中值设定在传送方向侧。

10. 发明授权

US10073386B2 Image forming apparatus 有权
公开(公告)号：US10073386B2
公开(公告)日：2018-09-11
申请号：US15482837
申请日：2017-04-10
申请人： Naomi Sugimoto , Hirokazu Ishii , Kenji Sugiura , Atsushi Nagata , Takehide Mizutani , Keigo Nakamura , Yuuji Wada , Naoto Kochi , Shinya Tanaka
发明人： Naomi Sugimoto , Hirokazu Ishii , Kenji Sugiura , Atsushi Nagata , Takehide Mizutani , Keigo Nakamura , Yuuji Wada , Naoto Kochi , Shinya Tanaka
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G15/1675 , G03G15/5016 , G03G15/6591 , G03G2215/00751
摘要： An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T−Tt)/T×100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.

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