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11. 发明申请

US20130164011A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130164011A1
公开(公告)日：2013-06-27
申请号：US13718395
申请日：2012-12-18
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。

12. 发明授权

US09291955B2 Image forming apparatus and transfer bias application device therein 有权
公开(公告)号：US09291955B2
公开(公告)日：2016-03-22
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.

13. 发明授权

US09081333B2 Image forming apparatus and transfer bias application device therein 有权
公开(公告)号：US09081333B2
公开(公告)日：2015-07-14
申请号：US13718395
申请日：2012-12-18
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
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.

14. 发明申请

US20130195483A1 TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME 有权
标题翻译：传输装置和图像形成装置，包括它们
公开(公告)号：US20130195483A1
公开(公告)日：2013-08-01
申请号：US13747629
申请日：2013-01-23
申请人： Yasunobu Shimizu , Shinya Tanaka , Hiromi Ogiyama , Hirokazu Ishii , Keigo Nakamura
发明人： Yasunobu Shimizu , Shinya Tanaka , Hiromi Ogiyama , Hirokazu Ishii , Keigo Nakamura
IPC分类号： G03G15/16
CPC分类号： G03G15/1645 , G03G15/0189 , G03G15/1605 , G03G15/5029 , G03G2215/00751
摘要： A transfer device includes a transfer bias power source, a switching device, and a sheet dependent condition setting device. The transfer bias power source applies to a transfer member, based on sheet dependent conditions for a recording medium onto which a toner image is transferred, one of a DC transfer bias and a superimposed transfer bias including an alternating current (AC) component superimposed on a DC component. The switching device switches a transfer mode between a DC transfer mode in which the DC transfer bias is applied to the transfer device and a superimposed-bias transfer mode in which the superimposed transfer bias is applied to the transfer device. The sheet dependent condition setting device sets arbitrarily at least one of the sheet dependent conditions for the recording medium at the superimposed-bias transfer mode. The sheet dependent conditions include a DC component value and an AC component value.
摘要翻译：转印装置包括转印偏压电源，开关装置和片材相关条件设定装置。转印偏压电源基于转印有调色剂图像的记录介质的片材相关条件，转印偏压电源施加到转印偏压电源，其中DC转印偏压和包括交叠电流（AC）分量叠加在一起的叠加转印偏压直流分量。切换装置在其中向转印装置施加DC转印偏压的DC转印模式和向转印装置施加叠加的转印偏压的叠加偏压转印模式之间切换转印模式。片材相关条件设定装置以叠加偏置传送模式任意设定记录介质的片材相关条件中的至少一个。片材相关条件包括DC分量值和AC分量值。

15. 发明授权

US08892013B2 Transfer device and image forming apparatus 有权
公开(公告)号：US08892013B2
公开(公告)日：2014-11-18
申请号：US13646898
申请日：2012-10-08
申请人： Ryuuichi Mimbu , Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Keigo Nakamura , Hiromi Ogiyama , Kenji Sengoku
发明人： Ryuuichi Mimbu , Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Keigo Nakamura , Hiromi Ogiyama , Kenji Sengoku
IPC分类号： G03G15/20 , G03G21/00 , G03G15/16
摘要： A transfer device comprises a freely rotatable transferring member contacting an image bearing member to form a transfer nip therebetween; a transfer bias applying member to apply a first bias created by superimposing an alternating current component on a direct current component to the transferring member to transfer a toner image borne on the image bearing member to a recording medium in the transfer nip; and an applicator to apply a protective agent to a surface of the transferring member.

16. 发明授权

US09285722B2 Image forming apparatus having transfer bias control 有权
标题翻译：具有转印偏压控制的图像形成装置
公开(公告)号：US09285722B2
公开(公告)日：2016-03-15
申请号：US13893594
申请日：2013-05-14
申请人： Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Keigo Nakamura
发明人： Shinya Tanaka , Hirokazu Ishii , 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.
摘要翻译：图像形成装置包括转印偏压输出装置和信息接收装置。转印偏压输出装置输出包括由叠加在DC偏压上的AC偏压组成的叠加偏压的转印偏压，以在承载调色剂图像的图像承载部件和辊隙形成部件之间的转印辊隙中形成转印电场，以转印调色剂图像转印到转印辊隙中的记录介质上。可操作地连接到信息接收装置和转移偏置输出装置的控制器使得转移偏置输出装置基于影响转移的信息接收装置接收的信息来改变AC偏压的峰峰值电压的目标输出并且当AC偏压的峰 - 峰电压的目标输出值增加时，减小DC偏压的目标输出。

17. 发明授权

US09075350B2 Image forming apparatus to maintain adequate transferability of toner to a recording medium 有权
标题翻译：图像形成装置，以保持调色剂足够的可转印性到记录介质
公开(公告)号：US09075350B2
公开(公告)日：2015-07-07
申请号：US14022512
申请日：2013-09-10
申请人： Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Keigo Nakamura
发明人： Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Keigo Nakamura
IPC分类号： G03G15/00 , G03G15/16
CPC分类号： G03G15/16 , G03G15/1605 , G03G15/1675 , G03G2215/00717
摘要： An image forming apparatus includes a power source to output a voltage having an alternating waveform to transfer a toner image from an image bearing member to a recording medium. A time-averaged value (Vave) of the voltage has a polarity in a transfer direction, in which the toner image is transferred from the image bearing member to the recording medium, and an absolute value of the time-averaged value is greater than a midpoint value (Voff) of the voltage intermediate between a maximum value and a minimum value of the voltage. As a roughness of the recording medium increases, a duty ratio (Duty) expressed by A/(A+B) is reduced, where A is an area of the waveform of the voltage in a return direction opposite the transfer direction relative to the midpoint value in one cycle and B is an area in the transfer direction relative to the midpoint value.
摘要翻译：图像形成装置包括用于输出具有交替波形的电压的电源，以将调色剂图像从图像承载部件转印到记录介质。电压的时间平均值（Vave）在传送方向上具有调色剂图像从图像承载部件传送到记录介质的极性，并且时间平均值的绝对值大于电压的最大值和最小值之间的电压的中点值（Voff）。随着记录介质的粗糙度的增加，由A /（A + B）表示的占空比（Duty）减小，其中A是相对于中点在与传送方向相反的返回方向上的电压波形的面积一个循环中的值，B是相对于中点值的传送方向的面积。

18. 发明授权

US09454107B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09454107B2
公开(公告)日：2016-09-27
申请号：US13918088
申请日：2013-06-14
申请人： Yasunobu Shimizu , Shinya Tanaka , Hirokazu Ishii , Keigo Nakamura
发明人： Yasunobu Shimizu , Shinya Tanaka , Hirokazu Ishii , Keigo Nakamura
IPC分类号： G03G15/20 , G03G15/16
CPC分类号： G03G15/1665 , G03G15/16 , G03G15/1675
摘要： A novel image forming apparatus includes a photoreceptor to bear an electrostatic latent image on a surface thereof, a developing device to develop the electrostatic latent image into a toner image, an intermediate transfer member onto which the electrostatic latent image is transferred, a primary transfer member to apply a primary transfer bias to the intermediate transfer member to transfer the toner image thereto, a secondary transfer member supplied with a secondary transfer bias to transfer the toner image from the intermediate transfer member onto a recording medium, and a transfer bias power source to selectively apply to the secondary transfer member one of a secondary transfer bias consisting of a direct current (DC) voltage in a DC transfer mode and a secondary transfer bias consisting of a superimposed bias in which an alternating voltage is superimposed on a DC voltage.
摘要翻译：一种新颖的图像形成装置包括：感光体，其表面具有静电潜像;显影装置，用于将静电潜像显影成调色剂图像;静电潜像转印到其上的中间转印部件;一次转印部件将第一转印偏压施加到中间转印部件以将调色剂图像转印到其上，提供二次转印偏压的二次转印部件将调色剂图像从中间转印部件转印到记录介质上，以及转印偏压电源选择性地向二次转印构件施加由DC传递模式中的直流（DC）电压和由交流电压叠加在直流电压上的叠加偏压组成的二次转印偏压构成的二次转印偏压。

19. 发明授权

US09046830B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09046830B2
公开(公告)日：2015-06-02
申请号：US14173122
申请日：2014-02-05
申请人： Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Takehide Mizutani , Keigo Nakamura
发明人： Shinya Tanaka , Hirokazu Ishii , Yasunobu Shimizu , Takehide Mizutani , Keigo Nakamura
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605
摘要： An image forming apparatus includes a rotatable image bearing member, a nip forming member, and a power source. The rotatable image bearing member bears a toner image on a surface thereof and rotates. The nip forming member contacts the surface of the image bearing member to form a transfer nip therebetween. The power source applies a transfer bias to the transfer nip to transfer the toner image from the image bearing member onto a recording medium interposed in the transfer nip. The transfer bias includes a superimposed transfer bias in which an alternating current (AC) component is superimposed on a direct current (DC) component and a polarity of the superimposed transfer bias changes with time. A phase difference between an AC voltage and an AC current output from the power source is equal to or less than 0.47 cycles.
摘要翻译：图像形成装置包括可旋转图像承载部件，辊隙形成部件和动力源。可旋转图像承载部件在其表面上承载调色剂图像并旋转。辊隙形成构件接触图像承载构件的表面以在它们之间形成转印辊隙。电源将转印偏压施加到转印压区，以将调色剂图像从图像承载部件转印到介于转印辊隙中的记录介质上。转印偏压包括其中交流（AC）分量叠加在直流（DC）分量上并且叠加转印偏压的极性随时间变化的叠加转印偏压。交流电压与从电源输出的交流电流之间的相位差等于或小于0.47个周期。

20. 发明授权

US08965227B2 Image forming apparatus including forced toner consumption control 有权
标题翻译：图像形成装置包括强制调色剂消耗控制
公开(公告)号：US08965227B2
公开(公告)日：2015-02-24
申请号：US13785621
申请日：2013-03-05
申请人： Takehide Mizutani , Shinya Tanaka , Yasunobu Shimizu , Hirokazu Ishii , Keigo Nakamura
发明人： Takehide Mizutani , Shinya Tanaka , Yasunobu Shimizu , Hirokazu Ishii , Keigo Nakamura
IPC分类号： G03G15/16 , G03G15/00
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/556 , G03G15/6591
摘要： An image forming apparatus includes a toner forced consumption control unit that performs toner forced consumption control in which toner in a developing unit is forcibly consumed when a certain condition to perform the toner forced consumption control is met. The certain condition to perform the toner forced consumption control includes a specific performance condition that a transfer bias switching condition to switch a transfer bias to a superimposed transfer bias in which an alternating current component is superimposed on a direct current component, from a direct current transfer bias is met. When the specific performance condition is met, the toner forced consumption control unit performs preliminary toner forced consumption control in which the toner forced consumption control is performed before an image forming operation using the superimposed transfer bias is started.
摘要翻译：图像形成装置包括调色剂强制消耗控制单元，其执行调色剂强制消耗控制，其中当执行调色剂强制消耗控制的特定条件时，显影单元中的调色剂被强制消耗。执行调色剂强制消耗控制的特定条件包括：特定的性能条件，即转印偏压切换条件，其将转印偏压切换到其中交流分量叠加在直流分量上的叠加转印偏压，从直流转印偏见得到满足。当满足特定性能条件时，调色剂强制消耗控制单元在开始使用叠加的转印偏压的图像形成操作之前执行调色剂强制消耗控制的初步调色剂强制消耗控制。

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