公开(公告)号：US10295948B2

公开(公告)日：2019-05-21

申请号：US15483548

申请日：2017-04-10

Applicant: Keigo Nakamura ,  Hirokazu Ishii ,  Kenji Sugiura ,  Takehide Mizutani ,  Atsushi Nagata ,  Naoto Kochi ,  Yuuji Wada ,  Shinya Tanaka

Inventor： Keigo Nakamura ,  Hirokazu Ishii ,  Kenji Sugiura ,  Takehide Mizutani ,  Atsushi Nagata ,  Naoto Kochi ,  Yuuji Wada ,  Shinya Tanaka

IPC: G03G15/00 ,  G03G21/20 ,  G03G15/16

Abstract: 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.

公开(公告)号：US20170300000A1

公开(公告)日：2017-10-19

申请号：US15483548

申请日：2017-04-10

Applicant: Keigo NAKAMURA ,  Hirokazu ISHll ,  Kenji SUGIURA. ,  Takehide MIZUTANI ,  Atsushi NAGATA ,  Naoto KOCHI ,  Yuuji WADA ,  Shinya TANAKA

Inventor： Keigo NAKAMURA ,  Hirokazu ISHll ,  Kenji SUGIURA. ,  Takehide MIZUTANI ,  Atsushi NAGATA ,  Naoto KOCHI ,  Yuuji WADA ,  Shinya TANAKA

IPC: G03G15/00 ,  G03G21/20 ,  G03G15/16

CPC classification number: G03G15/80 ,  G03G15/1675 ,  G03G21/203

Abstract: 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.

公开(公告)号：US20150338792A1

公开(公告)日：2015-11-26

申请号：US14709567

申请日：2015-05-12

Applicant: Keigo NAKAMURA ,  Haruo IIMURA ,  Shinji AOKI

Inventor： Keigo NAKAMURA ,  Haruo IIMURA ,  Shinji AOKI

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1675

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09195179B2

公开(公告)日：2015-11-24

申请号：US13747629

申请日：2013-01-23

Applicant: Yasunobu Shimizu ,  Shinya Tanaka ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Keigo Nakamura

Inventor： Yasunobu Shimizu ,  Shinya Tanaka ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Keigo Nakamura

IPC: G03G15/16 ,  G03G15/00 ,  G03G15/01

CPC classification number: G03G15/1645 ,  G03G15/0189 ,  G03G15/1605 ,  G03G15/5029 ,  G03G2215/00751

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09020382B2

公开(公告)日：2015-04-28

申请号：US13690408

申请日：2012-11-30

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

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

IPC: G03G15/16 ,  G03G15/01

CPC classification number: G03G15/0131 ,  G03G15/0189 ,  G03G15/1675 ,  G03G2215/0129

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08781348B2

公开(公告)日：2014-07-15

申请号：US13206957

申请日：2011-08-10

Applicant: Yasuhiko Ogino ,  Haruo Iimura ,  Shinji Aoki ,  Keigo Nakamura

Inventor： Yasuhiko Ogino ,  Haruo Iimura ,  Shinji Aoki ,  Keigo Nakamura

IPC: G03G15/16

CPC classification number: G03G15/1675 ,  G03G15/1605

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130136468A1

公开(公告)日：2013-05-30

申请号：US13666474

申请日：2012-11-01

Applicant: Yasunobu SHIMIZU ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Shinya Tanaka ,  Keigo Nakamura

Inventor： Yasunobu SHIMIZU ,  Hiromi Ogiyama ,  Hirokazu Ishii ,  Shinya Tanaka ,  Keigo Nakamura

IPC: G03G15/00 ,  G03G15/16

CPC classification number: G03G15/0189 ,  G03G15/1605 ,  G03G15/1675

Abstract: An image forming apparatus includes an image bearing member to bear a toner image on a surface thereof, a transfer device to transfer the toner image onto a recording medium, and a transfer bias power source to apply to the transfer device a superimposed transfer bias in which an alternating current (AC) component is superimposed on a direct current (DC) component in a superimposed transfer mode to transfer the toner image. The superimposed transfer bias has a waveform in which a first polarity in a direction of transferring the toner image onto the recording medium and a second polarity opposite the first polarity switch alternately. The superimposed transfer bias is output such that a standard value of each of the DC component and the AC component is multiplied by a respective correction ratio, and the correction ratio of the DC component is different from that of the AC component.

Abstract translation: 图像形成装置包括在其表面上承载调色剂图像的图像承载部件，将调色剂图像转印到记录介质上的转印装置和转印偏压电源，以向转印装置施加叠加的转印偏压，其中 交流（AC）分量以重叠传送模式叠加在直流（DC）分量上以转印调色剂图像。 叠加的转印偏压具有波形，其中在将调色剂图像转印到记录介质上的方向上的第一极性和与第一极性开关相反的第二极性交替。 输出叠加的转印偏压，使得每个DC分量和AC分量的标准值乘以相应的校正比，并且DC分量的校正比不同于AC分量的校正比。

公开(公告)号：US20130070984A1

公开(公告)日：2013-03-21

申请号：US13580206

申请日：2011-03-02

Applicant: Hajime Shirasaka ,  Keigo Nakamura

Inventor： Hajime Shirasaka ,  Keigo Nakamura

IPC: G06K9/00

CPC classification number: G06K9/00201 ,  G06F19/00 ,  G06F19/321 ,  G06T19/20 ,  G06T2219/008 ,  G06T2219/2004

Abstract: At least one specified position and, if necessary, a cutting surface are specified in a three-dimensional medical image. Plural anatomical structures present within a predetermined range from the specified position are extracted, as structures to be separated, by referring to a structure information storage unit that stores plural anatomical structures and a separation condition storage unit that stores a separation condition for each anatomical structure of a subject to determine, based on the specified position, a boundary surface and, if necessary, a cutting surface for separately displaying the plural anatomical structures. The boundary surface corresponding to the structures to be separated and the specified position and, if necessary, the cutting surface are set based on the separation condition. A three-dimensional medical image in which the structures to be separated are separated by the boundary surface and, if necessary, by the cutting surface is generated, and displayed.

Abstract translation: 在三维医学图像中指定至少一个指定位置，并且如果需要，切割表面。 通过参考存储多个解剖结构的结构信息存储单元和存储每个解剖结构的分离条件的分离条件存储单元，提取存在于来自指定位置的预定范围内的多个解剖结构作为要分离的结构， 基于指定位置确定边界面，以及必要时确定用于分开显示多个解剖结构的切割表面的受试者。 根据分离条件设定与要分离的结构和规定位置相对应的边界面，如有必要，根据分离条件设定切割面。 其中要分离的结构被边界表面分开并且如果需要的话由切割表面分离出来并显示出来的三维医学图像。

公开(公告)号：US20120243892A1

公开(公告)日：2012-09-27

申请号：US13415077

申请日：2012-03-08

Applicant: Keigo NAKAMURA ,  Haruo Ilmura ,  Yasuhiko Ogino ,  Shinji Aoki

Inventor： Keigo NAKAMURA ,  Haruo Ilmura ,  Yasuhiko Ogino ,  Shinji Aoki

IPC: G03G15/16

CPC classification number: G03G15/1675

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120237234A1

公开(公告)日：2012-09-20

申请号：US13412244

申请日：2012-03-05

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

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

IPC: G03G15/16

CPC classification number: G03G15/1675

Abstract: 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.

Abstract translation: 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。