公开(公告)号：US20200073308A1

公开(公告)日：2020-03-05

申请号：US16554448

申请日：2019-08-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akifumi Yamaguchi ,  Yasuhiro Tauchi ,  Kenichi Tamaki ,  Koji Suenami

IPC: G03G15/00

Abstract: In the first charge amount acquisition operation, based on density of a plurality of toner images for measurement or based on a direct component of a developing current at the time of forming the plurality of toner images in addition to the density of the plurality of toner images for measurement, the charge amount acquisition section acquires a first toner charge amount that is a charge amount of toner included in the toner image for measurement. In the second charge amount acquisition operation, based on the toner density detected at the time of image formation and a relationship between the first toner charge amount and the toner density detected in the first charge amount acquisition operation, the charge amount acquisition section acquires a second toner charge amount that is a charge amount of the toner in the development device.

公开(公告)号：US20190369521A1

公开(公告)日：2019-12-05

申请号：US16424536

申请日：2019-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yasushi Imanishi ,  Kenichi Tamaki

IPC: G03G15/06

Abstract: An image forming apparatus includes a storage unit and a charging amount acquisition unit. The charging amount acquisition unit forms a measurement toner image on the image carrier while changing the frequency of the alternating current voltage of the development bias, acquires a tilt of a measurement straight line representing a relationship between the change amount of the frequency and a density change amount of the measurement toner image based on the change amount of the frequency and a result of detecting density of the measurement toner image in the density detecting unit, and acquires the charging amount of the toner based on the acquired tilt of the measurement straight line and the reference information in the storage unit.

公开(公告)号：US10481522B2

公开(公告)日：2019-11-19

申请号：US16240896

申请日：2019-01-07

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yasuhiro Tauchi ,  Akifumi Yamaguchi

IPC: G03G15/08 ,  G03G15/09

Abstract: A developing device includes a developing roller and a layer thickness regulating member. The developing roller includes a fixed magnet and a sleeve. The layer thickness regulating member includes a regulating body portion and an upstream regulating portion, and the upstream regulating portion includes an upstream magnetic member and a nonmagnetic member. Developer is hardly strongly jammed in an area between a first magnetic field concentration point of the regulating body portion and a second magnetic field concentration point of the upstream regulating portion. Thus, even if the sleeve of the developing roller is rotated at a higher speed than before, the developer is stably regulated by the layer thickness regulating member.

公开(公告)号：US20170269508A1

公开(公告)日：2017-09-21

申请号：US15456938

申请日：2017-03-13

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Eiji Gyotoku ,  Akihiro Watanabe ,  Norio Kubo ,  Minoru Wada ,  Ryo Taniguchi ,  Yasushi Imanishi ,  Takahiro Okubo

IPC: G03G15/09

CPC classification number: G03G15/0889 ,  G03G15/065 ,  G03G15/0808 ,  G03G15/0907 ,  G03G15/0921

Abstract: A developing device includes a developing roller, a conveyor roller, a developer stirring unit and a development bias applying unit. The developing roller is arranged to face a photoconductive drum at a predetermined developing position and supplies the toner. The conveyor roller is arranged to face the developing roller at a predetermined facing position and supplies the developer to the developing roller. The development bias applying unit applies development biases to the first sleeve of the developing roller and the second sleeve of the conveyor roller during a developing operation of developing the electrostatic latent image on the photoconductive drum with the toner. The development bias applying unit applies the development biases such that a shifting electric field to move the toner on the first sleeve of the developing roller toward the second sleeve of the conveyor roller is formed at the facing position during the developing operation.

公开(公告)号：US20170052476A1

公开(公告)日：2017-02-23

申请号：US15239650

申请日：2016-08-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu

IPC: G03G15/08

CPC classification number: G03G15/0812 ,  G03G15/0806

Abstract: An image forming apparatus includes a rotator, a driving control portion, and a layer thickness control portion. The rotator conveys toner to contact position to an image carrying member, and supplies toner to the image carrying member at the contact position. The driving control portion controls rotation of the rotator so as to rotate the rotator during a developing period, and stop the rotation of the rotator after a set time has elapsed since an end of the developing period. The layer thickness control portion causes the rotator to carry toner by controlling a potential difference between a potential of the rotator and a predetermined potential so that toner on the rotator at the contact position has a first layer thickness during the developing period and has a second layer thickness while the rotation of the rotator is stopped, the second layer thickness being thicker than the first layer thickness.

Abstract translation: 图像形成装置包括旋转体，驱动控制部和层厚度控制部。 旋转器将调色剂传送到图像承载构件的接触位置，并且在接触位置向调色剂供应图像承载构件。 驱动控制部分控制旋转器的旋转，以便在显影期间旋转旋转器，并且在从显影周期结束起经过设定时间之后停止旋转器的旋转。 层厚度控制部分通过控制旋转器的电位和预定电位之间的电位差来使旋转器携带调色剂，使得在显影期间在接触位置处的旋转体上的调色剂具有第一层厚度，并且具有第二层 同时旋转体的旋转停止，第二层厚度比第一层厚度厚。

公开(公告)号：US20160103413A1

公开(公告)日：2016-04-14

申请号：US14879782

申请日：2015-10-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Ryo Taniguchi ,  Akifumi Yamaguchi

IPC: G03G15/095

CPC classification number: G03G21/0058 ,  G03G15/0806 ,  G03G15/0808 ,  G03G15/0815 ,  G03G15/751 ,  G03G21/0064 ,  G03G2215/00957

Abstract: In an image forming apparatus, a coating layer of each of a photoconductor drum and a collecting roller has been formed by a dipping method in which a base body of each of the photoconductor drum and the collecting roller is dipped in a liquid in a state where the base body is in a vertical attitude such that a first end of the base body faces down and a second end of the base body faces up. The collecting roller is supported in a state where the first end of the collecting roller base body and the second end of the drum base body face a same direction.

Abstract translation: 在图像形成装置中，通过浸渍方法形成感光鼓和收集辊中的每一个的涂层，其中每个感光鼓和收集辊的基体浸渍在液体中， 基体处于垂直姿态，使得基体的第一端面向下并且基体的第二端面朝上。 收集辊在收集辊基体的第一端和鼓基体的第二端面向相同方向的状态下被支撑。

公开(公告)号：US09304445B2

公开(公告)日：2016-04-05

申请号：US14574266

申请日：2014-12-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masashi Fujishima ,  Yuji Kamiyama ,  Tamotsu Shimizu ,  Shizuka Okada ,  Sakae Saito ,  Yasuhiro Oishi

IPC: G03G15/09 ,  G03G15/08 ,  C23C28/00 ,  C25D11/18 ,  C25D9/06

CPC classification number: G03G15/09 ,  C08K2003/2237 ,  C09D5/24 ,  C09D7/61 ,  C09D7/67 ,  C23C28/00 ,  C25D9/06 ,  C25D11/024 ,  C25D11/08 ,  C25D11/10 ,  C25D11/18 ,  C25D11/24 ,  G03G15/0808 ,  G03G15/0818 ,  G03G15/0928

Abstract: A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes an aluminum oxide thin film and a resin coat layer, the aluminum oxide thin film being formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being formed on a surface of the aluminum oxide thin film that has been subjected to a predetermined heating process, the resin coat layer being made of a resin material and having electric conductivity.

Abstract translation: 显影辊包括辊状主体，其被设置为面对而不接触图像载体的外周表面。 辊主体包括氧化铝薄膜和树脂涂层，氧化铝薄膜形成在由包括铝的金属制成的基体的外周面上，树脂涂层形成在表面上 的已经进行了预定加热处理的氧化铝薄膜，树脂涂层由树脂材料制成并具有导电性。

公开(公告)号：US09304432B2

公开(公告)日：2016-04-05

申请号：US14506756

申请日：2014-10-06

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yukihiro Mori

IPC: G03G15/06 ,  G03G15/09 ,  G03G15/08

CPC classification number: G03G15/065 ,  G03G15/0898 ,  G03G15/0907

Abstract: An image forming apparatus includes an image carrier, a developing device, a bias applying unit, a leak detecting unit, a bias controller and a leak detection controller. The developing device includes a magnetic roller and a developer layer. The bias applying unit applies development biases to the magnetic roller and the developing roller. The leak detecting unit detects a leak generated between the image carrier and the developing roller or a leak generated between the developing roller and the magnetic roller. The leak detection controller performs a leak detecting operation for detecting the value of an inter-peak voltage of the alternating current voltage of the development bias applied to the developing roller, at which the leak is generated, while changing the inter-peak voltage at a time different from that during the developing operation.

Abstract translation: 图像形成装置包括图像载体，显影装置，偏压施加单元，泄漏检测单元，偏置控制器和泄漏检测控制器。 显影装置包括磁辊和显影剂层。 偏压施加单元将显影偏压施加到磁辊和显影辊。 泄漏检测单元检测图像载体和显影辊之间产生的泄漏或显影辊和磁性辊之间产生的泄漏。 泄漏检测控制器执行泄漏检测操作，用于检测施加到产生泄漏的显影辊上的显影偏压的交流电压的峰值电压值，同时改变峰值电压 时间不同于开发操作。

公开(公告)号：US09291944B2

公开(公告)日：2016-03-22

申请号：US14632225

申请日：2015-02-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akira Matayoshi

IPC: G03G15/08 ,  G03G21/10

CPC classification number: G03G15/0889 ,  G03G15/0858 ,  G03G15/0893 ,  G03G21/105

Abstract: A developing device includes a housing, a stirring member, a developing unit body, a driving device, a detecting device, and a control device. The housing accommodates developer supplied from a supply means and including toner and carrier. The stirring member rotates in the housing to stir the developer. The developing unit body rotates in the housing to convey the developer toward an image carrying member from the stirring member and attaches the toner to the image carrying member. The driving device rotationally drive at least one of the stirring member and the developing unit body. The detecting device detects the torque of the driving device. The control device performs a recovery process of controlling the supply means to supply at least one of the carrier and the developer to an interior of the housing when a detection result of the detecting device has a value lower than a threshold value.

Abstract translation: 显影装置包括壳体，搅拌构件，显影单元体，驱动装置，检测装置和控制装置。 壳体容纳从供给装置供应的显影剂，并且包括调色剂和载体。 搅拌构件在壳体中旋转以搅拌显影剂。 显影单元主体在壳体中旋转以将显影剂从搅拌构件传送到图像承载构件，并将调色剂附着到图像承载构件。 驱动装置旋转地驱动搅拌构件和显影单元主体中的至少一个。 检测装置检测驱动装置的扭矩。 当检测装置的检测结果具有低于阈值的值时，控制装置执行恢复处理，该恢复处理控制供应装置将载体和显影剂中的至少一个提供到壳体的内部。

公开(公告)号：US09207583B1

公开(公告)日：2015-12-08

申请号：US14823200

申请日：2015-08-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Masaru Hatano ,  Asami Sasaki ,  Norio Kubo

IPC: G03G15/09 ,  G03G15/08

CPC classification number: G03G15/0928 ,  G03G15/0808 ,  G03G15/0812 ,  G03G15/0893

Abstract: A developing device includes a housing, a developer carrier, a conveying member and a surface layer. The developer carrier carries a developer on a circumferential surface. The conveying member is rotatably arranged in a first conveying portion and conveys the developer in the first conveying direction and supplies the developer to the developer carrier. The surface layer is formed on a surface of a predetermined cylindrical base member. The surface layer is formed by an immersion method of immersing the base member in a predetermined immersion tank so that an axial direction of the base member extends along a vertical direction. A lower end side of the base member at the time of the immersion is arranged in an upstream side of the housing and an upper end side of the base member at the time of the immersion is arranged in a downstream side of the housing.

Abstract translation: 显影装置包括壳体，显影剂载体，输送构件和表面层。 显影剂载体在圆周表面上携带显影剂。 输送构件可旋转地布置在第一输送部分中并沿着第一输送方向输送显影剂，并将显影剂供应到显影剂载体。 表面层形成在预定的圆筒形基体的表面上。 表面层通过将基底部件浸渍在预定的浸渍槽中，使得基部构件的轴向沿着垂直方向延伸的浸渍方法形成。 浸渍时的基材的下端侧配置在壳体的上游侧，浸渍时的基材的上端侧配置在壳体的下游侧。