公开(公告)号：US10191415B2

公开(公告)日：2019-01-29

申请号：US15801858

申请日：2017-11-02

Applicant: Takehide Mizutani ,  Naoto Kochi ,  Katsuhito Haruno ,  Atsushi Nakamoto ,  Masakazu Imai ,  Osamu Ichihashi

Inventor： Takehide Mizutani ,  Naoto Kochi ,  Katsuhito Haruno ,  Atsushi Nakamoto ,  Masakazu Imai ,  Osamu Ichihashi

IPC: G03G15/00 ,  G03G15/16

Abstract: An image forming apparatus includes a developing device, an image bearer, a transfer rotator, a blade contacting a surface of the transfer rotator, and a controller to control the developing device, the image bearer, and the transfer rotator. A first toner pattern image is formed on the image bearer, transferred onto the transfer rotator, and passed past the blade at least twice together with rotation of the transfer rotator in at start-up of the image forming apparatus. A second toner pattern image is formed on the image bearer after the start-up and during passage of a non-image area in which toner images are not formed. A range of the first toner pattern image is wider than a range of the second toner pattern image in a width direction perpendicular to a direction of travel of the image bearer.

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：US20170185007A1

公开(公告)日：2017-06-29

申请号：US15383369

申请日：2016-12-19

Applicant: Naoto KOCHI ,  Shinya TANAKA ,  Takehide MIZUTANI

Inventor： Naoto KOCHI ,  Shinya TANAKA ,  Takehide MIZUTANI

IPC: G03G15/16

CPC classification number: G03G15/1675 ,  G03G15/161 ,  G03G2215/0129

Abstract: An image forming apparatus includes a transfer power supply and a controller. The controller is configured to execute control for an end-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to an end portion of a recording sheet and a body-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to a body portion on a rear side of an end portion of a recording sheet, such that the end-portion voltage is set to be higher than the body-portion voltage in the DC transfer bias and a value obtained by dividing the end-portion voltage by the body-portion voltage in the superimposed transfer bias is set to be smaller than a value obtained by dividing the end-portion voltage by the body-portion voltage in the DC transfer bias.

公开(公告)号：US20160274504A1

公开(公告)日：2016-09-22

申请号：US15071773

申请日：2016-03-16

Applicant: Yuuji WADA ,  Hiroyoshi HAGA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Hirokazu ISHll

Inventor： Yuuji WADA ,  Hiroyoshi HAGA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Hirokazu ISHll

IPC: G03G15/16

CPC classification number: G03G15/6591 ,  G03G15/1605 ,  G03G15/1675 ,  G03G2215/00776

Abstract: An image forming apparatus includes a toner image forming unit, a nip formation member, a transfer power source, an information acquisition device, and a controller. The information acquisition device acquires specific information that specifies whether a recording sheet as a transfer target of a toner image is an uneven surface sheet having an uneven surface. The controller outputs a bias including a superimposed voltage, in which an alternating current (AC) voltage is superimposed on a direct current (DC) voltage, as a transfer bias from the transfer power source when the specific information acquired by the information acquisition device is not information corresponding to the uneven surface sheet and to output a bias including only the DC voltage as the transfer bias from the transfer power source when the specific information is the information corresponding to the uneven surface sheet.

Abstract translation: 图像形成装置包括调色剂图像形成单元，辊隙形成构件，转印电源，信息获取装置和控制器。 信息获取装置获取指定作为调色剂图像的转印对象的记录纸是具有不平坦表面的不平坦表面片的具体信息。 当由信息获取装置获取的特定信息是由传送电源传递偏压时，控制器输出包括叠加在直流（DC）电压上的交流（AC）电压的叠加电压的偏压， 不是与不平坦表面片材相对应的信息，并且当特定信息是与不平坦表面片材相对应的信息时，输出仅包括来自转印电源的转印偏压的直流电压的偏压。

公开(公告)号：US20160216647A1

公开(公告)日：2016-07-28

申请号：US15003239

申请日：2016-01-21

Applicant: Kazuki Yogosawa ,  Mitsuru Takahashi ,  Hiroyoshi Haga ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Kenji Sengoku ,  Takehide Mizutani ,  Junpei Fujita ,  Yuuji Wada ,  Tatsuya Ohsugi

Inventor： Kazuki Yogosawa ,  Mitsuru Takahashi ,  Hiroyoshi Haga ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Kenji Sengoku ,  Takehide Mizutani ,  Junpei Fujita ,  Yuuji Wada ,  Tatsuya Ohsugi

IPC: G03G15/16 ,  A47L13/40

CPC classification number: G03G15/161 ,  B08B1/002 ,  B08B1/007 ,  B08B1/02 ,  B08B1/04 ,  B08B6/00 ,  G03G21/0035 ,  G03G21/0058 ,  G03G21/0076 ,  G03G2215/0129 ,  G03G2221/001

Abstract: A cleaning device includes an upstream cleaner, an upstream cleaner, and a collection member. The upstream cleaner is configured to remove toner from a surface of a cleaning target. The downstream cleaner is disposed downstream from the upstream cleaner in a direction of movement of the surface of the cleaning target. The downstream cleaner is configured to remove toner from the surface of the cleaning target. The collection member is configured to collect toner from the downstream cleaner.

Abstract translation: 清洁装置包括上游清洁器，上游清洁器和收集构件。 上游清洁器被配置为从清洁目标的表面去除调色剂。 下游清洁器在清洁对象表面的移动方向上设置在上游清洁器的下游。 下游清洁器构造成从清洁对象的表面去除调色剂。 收集构件构造成从下游清洁器收集调色剂。

公开(公告)号：US20160161887A1

公开(公告)日：2016-06-09

申请号：US14956707

申请日：2015-12-02

Applicant: Kenji SUGIURA ,  Toshitaka YAMAGUCHI ,  Hiroyoshi HAGA ,  Hirokazu ISHII ,  Shinya TANAKA ,  Takehide MIZUTANI ,  Yuuji WADA ,  Tatsuya OHSUGI ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA

Inventor： Kenji SUGIURA ,  Toshitaka YAMAGUCHI ,  Hiroyoshi HAGA ,  Hirokazu ISHII ,  Shinya TANAKA ,  Takehide MIZUTANI ,  Yuuji WADA ,  Tatsuya OHSUGI ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1675 ,  G03G21/20

Abstract: An image forming apparatus includes an image bearer, a toner image forming device, a nip forming device, a power source, a controller, and a temperature-and-humidity detector. The toner image forming device forms a toner image on the image bearer. The nip forming device contacts the image bearer to form a transfer nip. The power source outputs a transfer bias, in which an alternating current component is superimposed on a direct current component, to transfer the toner image onto a recording medium interposed in the transfer nip. The temperature-and-humidity detector detects a temperature and humidity. The controller controls the power source to output the transfer bias including the direct current component with a smaller absolute value as at least one of the detected temperature and humidity increases.

Abstract translation: 图像形成装置包括图像载体，调色剂图像形成装置，夹持形成装置，电源，控制器和温度 - 湿度检测器。 调色剂图像形成装置在图像承载体上形成调色剂图像。 辊隙形成装置接触图像载体以形成转印辊隙。 电源输出转印偏压，其中交流分量叠加在直流分量上，以将调色剂图像转印到介于转印辊隙中的记录介质上。 温度和湿度检测器检测温度和湿度。 当检测到的温度和湿度中的至少一个增加时，控制器控制电源输出包括具有较小绝对值的直流分量的转印偏压。

公开(公告)号：US09274461B2

公开(公告)日：2016-03-01

申请号：US14254192

申请日：2014-04-16

Applicant: Tsutomu Kato ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

Inventor： Tsutomu Kato ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

IPC: G03G15/16

CPC classification number: G03G15/1675

Abstract: A transfer device includes a transfer member and a bias applicator. The transfer member contacts a surface, on which a toner image is borne, of an image bearing body, to form a transfer nip. The bias applicator applies a DC voltage and an AC voltage as transfer bias to transfer the toner image on the image bearing body to a recording sheet in the transfer nip. The bias applicator applies a DC voltage having a same polarity as the DC voltage of the transfer bias and an AC voltage having an amplitude smaller than the AC voltage of the transfer bias or applies the DC voltage having the same polarity as the DC voltage of the transfer bias without applying an AC voltage, when an inter-sheet area that exists on the image bearing body passes through the transfer nip during a continuous image formation period.

Abstract translation: 转印装置包括转印部件和偏置施加器。 转印构件与图像承载体的承载有调色剂图像的表面接触，以形成转印辊隙。 偏压施加器施加直流电压和交流电压作为转印偏压，以将图像承载体上的调色剂图像转印到转印压区中的记录纸上。 偏压施加器施加具有与转印偏压的DC电压相同极性的DC电压和具有小于转印偏压的AC电压的幅度的AC电压，或施加具有与所述转印偏压的DC电压相同极性的DC电压 当连续图像形成期间存在于图像承载体上的片间区域通过转印辊隙时，不施加交流电压的转印偏压。

公开(公告)号：US08270856B2

公开(公告)日：2012-09-18

申请号：US12461479

申请日：2009-08-13

Applicant: Takehide Mizutani ,  Hiroyoshi Haga ,  Tsutomu Kato ,  Yohhei Watanabe ,  Yoshimi Saitoh ,  Masayoshi Nakayama

Inventor： Takehide Mizutani ,  Hiroyoshi Haga ,  Tsutomu Kato ,  Yohhei Watanabe ,  Yoshimi Saitoh ,  Masayoshi Nakayama

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

CPC classification number: G03G15/22 ,  G03G15/161 ,  G03G15/2025 ,  G03G15/234 ,  G03G2215/1661

Abstract: An image forming apparatus is provided, which forms a releasing agent absorption toner image on an in-between printed sides area of a moving surface of an image carrier in the duplex printing mode. When the in-between printed sides area of the moving surface enters a transfer position at which a toner image is transferred from the image carrier to a recording medium, the transferring operation of transferring the toner image from the image carrier to a recording medium is interrupted to keep the releasing agent absorption toner image on the in-between printed sides area of the moving surface of the image carrier.

Abstract translation: 提供一种图像形成装置，其以双面打印模式在图像载体的移动表面的中间印刷侧区域之间形成脱模剂吸收调色剂图像。 当移动表面的中间印刷侧区域进入调色剂图像从图像载体转印到记录介质的转印位置时，将调色剂图像从图像载体转印到记录介质的转印操作被中断 以将脱模剂吸收调色剂图像在图像载体的移动表面的中间印刷侧区域之间。

公开(公告)号：US20100040393A1

公开(公告)日：2010-02-18

申请号：US12542289

申请日：2009-08-17

Applicant: Shinichi Kawahara ,  Masumi Sato ,  Nobuyuki Koinuma ,  Kazuhisa Sudo ,  Tokuya Ojimi ,  Kazuhiko Yuki ,  Kohsuke Yamamoto ,  Takehide Mizutani ,  Masaki Sukesako ,  Ryuji Yoshida

Inventor： Shinichi Kawahara ,  Masumi Sato ,  Nobuyuki Koinuma ,  Kazuhisa Sudo ,  Tokuya Ojimi ,  Kazuhiko Yuki ,  Kohsuke Yamamoto ,  Takehide Mizutani ,  Masaki Sukesako ,  Ryuji Yoshida

IPC: G03G15/16 ,  G03G21/00

CPC classification number: G03G15/0131 ,  G03G15/0189 ,  G03G15/161 ,  G03G15/167 ,  G03G21/0011 ,  G03G21/105 ,  G03G21/12 ,  G03G2215/0132 ,  G03G2215/1652 ,  G03G2215/1661 ,  G03G2221/0042 ,  G03G2221/1621

Abstract: An image forming apparatus includes multiple image forming units disposed adjacent to and horizontally aligned with each other to form respective single non-black color images, a first transfer member to sequentially transfer and overlay the respective single non-black color images thereon for forming a composite color image, a black image forming unit disposed separately from the multiple image forming units including a black image carrier and a black image developing unit, a second transfer member to transfer the black image from the black image forming unit onto a recording medium, a first cleaning unit to clean the surface of the black image carrier, and a second cleaning unit to clean the surface of the second transfer member. The black toner removed from the surface of the black image carrier is collected to the black image developing unit.

Abstract translation: 图像形成装置包括多个图像形成单元，它们彼此相邻设置并水平对准，以形成相应的单个非黑色图像;第一传送构件，用于顺序地转移和覆盖其上的各个非黑色图像，以形成复合物 彩色图像，与包括黑色图像载体和黑色图像显影单元的多个图像形成单元分开设置的黑色图像形成单元，将黑色图像从黑色图像形成单元传送到记录介质上的第二传送构件，第一 清洁单元以清洁黑色图像载体的表面，以及第二清洁单元，以清洁第二转印构件的表面。 从黑色图像载体的表面去除的黑色调色剂被收集到黑色图像显影单元。

公开(公告)号：US20090220266A1

公开(公告)日：2009-09-03

申请号：US12394617

申请日：2009-02-27

Applicant: Emiko Shiraishi ,  Kentaroh Tomita ,  Takehide Mizutani ,  Takayuki Tamaki ,  Masumi Sato

Inventor： Emiko Shiraishi ,  Kentaroh Tomita ,  Takehide Mizutani ,  Takayuki Tamaki ,  Masumi Sato

IPC: G03G15/10

CPC classification number: G03G15/0822 ,  G03G15/0877 ,  G03G15/0879 ,  G03G2215/0607 ,  G03G2215/0822 ,  G03G2215/0838 ,  G03G2215/0888

Abstract: A developing unit, which is incorporated in an image forming apparatus, includes a developer case to accommodate a two-component developer including toner and carrier, a developer bearing member bearing the two-component developer to supply the developer to an image, a developer supply path formed inside the developer case to supply the developer along the developer bearing member, an agitation and conveyance member disposed in the developer supply path, a toner collecting mechanism to collect toner after development, and a collected toner conveyance path formed inside the developer case and including a collected toner conveying member. The collected toner conveyance path and the developer supply path are arranged in communication with each other in the vicinity of one end portion of the collected toner conveyance path in a direction of conveyance of collected toner so as to circulate toner unused for development.

Abstract translation: 包括在图像形成装置中的显影单元包括容纳包含调色剂和载体的双组分显影剂的显影剂盒，承载双组分显影剂以将显影剂供应给图像的显影剂承载部件，显影剂供应 在显影剂盒内形成的路径，以沿着显影剂承载部件提供显影剂，设置在显影剂供应路径中的搅拌和输送部件，显影后收集调色剂的调色剂收集机构和形成在显影剂盒内部的收集的调色剂输送路径， 包括收集的调色剂传送构件。 收集的调色剂输送路径和显影剂供给路径在收集的调色剂输送路径的一个端部附近在收集的调色剂的输送方向上彼此连通，以使不用于显影的调色剂循环。