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1. 发明申请

US20160161889A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US20160161889A1
公开(公告)日：2016-06-09
申请号：US15046185
申请日：2016-02-17
申请人： Shinya TANAKA , Naomi SUGIMOTO , Haruo llMURA , Shinji AOKI , Yasuhiko OGINO , Kazuchika SAEKI , Keigo NAKAMURA
发明人： Shinya TANAKA , Naomi SUGIMOTO , Haruo llMURA , Shinji AOKI , Yasuhiko OGINO , Kazuchika SAEKI , Keigo NAKAMURA
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。的偏置电压包括用于将调色剂图像从图像载体转印到在转印方向上的记录介质和具有第一电压的极性相反的第二电压，所述第一和第二电压为交替输出第一电压。偏置电压的时间平均值设置为在传送方向上的极性，并且相对于最大和最小的偏置电压之间的中值设定在传送方向侧。

2. 发明申请

US20150286168A1 TRANSFER DEVICE WITH TRANSFER VOLTAGE UNIT AND IMAGE FORMING APPARATUS USING THE SAME 审中-公开
标题翻译：具有传输电压单元的传输装置和使用其的图像形成装置
公开(公告)号：US20150286168A1
公开(公告)日：2015-10-08
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
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。

3. 发明申请

US20120243892A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20120243892A1
公开(公告)日：2012-09-27
申请号：US13415077
申请日：2012-03-08
申请人： Keigo NAKAMURA , Haruo Ilmura , Yasuhiko Ogino , Shinji Aoki
发明人： Keigo NAKAMURA , Haruo Ilmura , 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。

4. 发明申请

US20120045259A1 TRANSFER DEVICE, IMAGE FORMING APPARATUS, AND TRANSFER METHOD 有权
标题翻译：传输装置，图像形成装置和传送方法
公开(公告)号：US20120045259A1
公开(公告)日：2012-02-23
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。

5. 发明申请

US20150338792A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150338792A1
公开(公告)日：2015-11-26
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.
摘要翻译：图像形成装置包括承载调色剂图像的图像载体，用于在图像载体上形成调色剂图像的调色剂图像形成装置，与图像载体接触以形成图像承载体和夹持部之间的转印夹持部的辊隙形成装置转印偏压输出装置，用于输出包括DC分量和AC分量的转印偏压，以将调色剂图像从图像载体转印到介于转印辊隙中的记录介质上;以及控制器，可操作地连接到转印偏压输出装置，用于根据图像面积比A调整转印偏压的交流分量的频率f，使得频率f以预定的图像面积比Amin％为最小，其中Amin％大于0但低于实心图像的图像面积比。

6. 发明申请

US20170300000A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170300000A1
公开(公告)日：2017-10-19
申请号：US15483548
申请日：2017-04-10
申请人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
发明人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
IPC分类号： G03G15/00 , G03G21/20 , G03G15/16
CPC分类号： G03G15/80 , G03G15/1675 , G03G21/203
摘要： An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.

7. 发明申请

US20140270830A1 IMAGE FORMING APPARATUS 审中-公开
标题翻译：图像形成装置
公开(公告)号：US20140270830A1
公开(公告)日：2014-09-18
申请号：US14287639
申请日：2014-05-27
申请人： Keigo NAKAMURA , Hirokazu ISHII , Yasunobu SHIMIZU , Hiromi OGIYAMA , Shinya TANAKA
发明人： Keigo NAKAMURA , Hirokazu ISHII , Yasunobu SHIMIZU , Hiromi OGIYAMA , Shinya TANAKA
IPC分类号： G03G15/16
CPC分类号： G03G15/6535 , G03G15/1675 , G03G15/6532 , G03G2215/00772 , G03G2215/00776
摘要： An image forming apparatus includes a transfer device to transfer a toner image formed on an image bearing member onto a recording medium, a sheet separation device to separate the recording medium from the image bearing member, a sheet separation bias application device to apply to the sheet separation device a sheet separation bias in which an alternating current (AC) component is superimposed on a direct current (DC) component, and a transfer bias application device to selectively apply to the transfer device one of a DC transfer bias having a DC component and a superimposed transfer bias in which an AC component is superimposed on a DC component. Upon application of the superimposed transfer bias to the transfer device, the sheet separation bias applied to the sheet separation device is changed from the sheet separation bias applied upon application of the DC transfer bias to the transfer device.
摘要翻译：图像形成装置包括：转印装置，用于将形成在图像承载部件上的调色剂图像转印到记录介质上;片材分离装置，用于将记录介质与图像承载部件分离;片材分离偏置施加装置，分离装置，其中交流（AC）分量叠加在直流（DC）分量上的薄片分离偏压，以及转印偏压施加装置，用于选择性地向转印装置施加具有DC分量的DC转印偏压和其中AC分量叠加在DC分量上的叠加转印偏压。当向转印装置施加叠加的转印偏压时，施加到纸张分离装置的纸张分离偏压从施加到转印装置上的纸张分离偏压改变。

8. 发明申请

US20160154347A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20160154347A1
公开(公告)日：2016-06-02
申请号：US15013627
申请日：2016-02-02
申请人： Shinya TANAKA , Hirokazu ISHll , Yasunobu SHIMIZU , Keigo NAKAMURA
发明人： Shinya TANAKA , Hirokazu ISHll , Yasunobu SHIMIZU , Keigo NAKAMURA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1675
摘要： An image forming apparatus includes a transfer bias output device and an information receiving device. The transfer bias output device outputs a transfer bias including a superimposed bias composed of an AC bias superimposed on a DC bias to form a transfer electric field in a transfer nip between an image bearing member bearing a toner image and a nip forming member, to transfer the toner image onto a recording medium in the transfer nip. A controller operatively connected to the information receiving device and the transfer bias output device causes the transfer bias output device to change a target output of a peak-to-peak voltage of the AC bias based on information received by the information receiving device that affects transfer of the toner image and to reduce a target output of the DC bias as the target output value of the peak-to-peak voltage of the AC bias increases.

9. 发明申请

US20150261143A1 IMAGE FORMING APPARATUS AND TRANSFER BIA APPLICATION DEVICE THEREIN 审中-公开
标题翻译：图像形成装置和传输应用装置
公开(公告)号：US20150261143A1
公开(公告)日：2015-09-17
申请号：US14728641
申请日：2015-06-02
申请人： Keigo NAKAMURA , Yasunobu SHIMIZU , Hiromi OGIYAMA , Hirokazu ISHII , Shinya TANAKA
发明人： Keigo NAKAMURA , Yasunobu SHIMIZU , Hiromi OGIYAMA , Hirokazu ISHII , Shinya TANAKA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G15/1675
摘要： An image forming apparatus includes an image bearing member, a transfer member disposed facing the image bearing member to form a transfer region therebetween, a transfer bias application device to apply to the transfer region a transfer bias including a direct current (DC) component and an alternating current (AC) component to transfer the toner image onto the recording medium as the recording medium passes through the transfer region, and a controller operatively connected to the transfer bias application device to allow, during a bias change period in a sheet absent period in which the image bearing member rotates and no recording medium passes through the transfer region, the transfer bias application device to selectively apply to the transfer region one of the transfer bias without the AC component and the transfer bias with a peak-to-peak voltage of the AC component less than that applied in image formation.
摘要翻译：图像形成装置包括：图像承载部件，与图像承载部件相对配置的转印部件，在其间形成转印区域;转印偏压施加装置，向转印区域施加包含直流（DC）成分和交流电（AC）分量，以在记录介质通过传送区域时将调色剂图像转印到记录介质上;以及控制器，可操作地连接到转印偏压施加装置，以允许在片材缺失期间的偏差改变期间图像承载部件旋转并且没有记录介质通过转印区域，转印偏压施加装置选择性地向转印区域施加一个转印偏压，而没有交流分量和转印偏压，峰 - 峰电压为 AC分量小于图像形成中应用的分量。

10. 发明申请

US20170235258A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170235258A1
公开(公告)日：2017-08-17
申请号：US15427735
申请日：2017-02-08
申请人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
发明人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/5029 , G03G2215/00738
摘要： An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

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