公开(公告)号：US09201349B2

公开(公告)日：2015-12-01

申请号：US14570989

申请日：2014-12-15

Applicant: KYOCERA Document Solutions Inc.

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

IPC: G03G15/09 ,  G03G15/08

CPC classification number: G03G15/0921 ,  G03G15/0818 ,  G03G15/0928 ,  G03G2215/0132

Abstract: Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×105Ω to 1.0×106Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.

Abstract translation: 显影装置包括显影辊和磁辊。 显影辊包括氧化铝薄膜和树脂涂层。 磁辊设置成与显影辊的外周面无接触地包围，并且包括形成在由包括铝的金属制成的基体的外周面上的氧化铝薄膜。 磁性辊通过由调色剂和磁性载体组成的磁刷在显影辊的表面上形成调色剂层。 交流阻抗Z1在1.0×105＆OHgr范围内; 至1.0×106＆OHgr; 并且树脂涂层的表面粗糙度Ra在0.057μm至0.280μm的范围内，当在磁性辊的基体和显影辊的基体之间施加预定频率的AC电压时获得的AC阻抗Z1是在磁性 刷子形成在磁辊上。

公开(公告)号：US20150261124A1

公开(公告)日：2015-09-17

申请号：US14642062

申请日：2015-03-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shizuka Ikazaki ,  Akihiro Watanabe ,  Tamotsu Shimizu

IPC: G03G15/06

CPC classification number: G03G15/065 ,  G03G15/0803

Abstract: An image forming apparatus includes an image carrier, a developer carrier, a bias applying section, a leakage detecting section, and a bias controlling section. The developer carrier carries developer in the form of a layer of magnetized filaments to supply toner to the image carrier. The bias applying section applies to the developer carrier a development bias including a direct current voltage VmagDC and an alternating current voltage VmagAC superposed on each other. The leakage detecting section causes a discharge between the image carrier and the developer carrier and detects a leakage voltage when the discharge occurs. The leakage detecting section performs the leakage voltage detection in a blank region of the image carrier bearing no electrostatic latent image. The bias controlling section determines an alternating current voltage VmagAC according to a detected leakage voltage, and a frequency of the alternating current voltage VmagAC according to the voltage VmagAC.

Abstract translation: 图像形成装置包括图像载体，显影剂载体，偏压施加部，泄漏检测部和偏置控制部。 显影剂载体以一层磁化细丝的形式携带显影剂，以向图像载体提供调色剂。 偏置施加部分对显影剂载体施加包括彼此重叠的直流电压VmagDC和交流电压VmagAC的显影偏压。 泄漏检测部分在图像载体和显影剂载体之间引起放电，并且在放电发生时检测泄漏电压。 泄漏检测部在不具有静电潜像的图像载体的空白区域中执行泄漏电压检测。 偏置控制部根据检测到的泄漏电压和交流电压VmagAC的频率根据电压VmagAC来决定交流电压VmagAC。

公开(公告)号：US09031472B2

公开(公告)日：2015-05-12

申请号：US14154963

申请日：2014-01-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takefumi Yotsutsuji ,  Akifumi Yamaguchi ,  Takahisa Nakaue ,  Tamotsu Shimizu ,  Minoru Wada ,  Shizuka Okada

IPC: G03G15/18 ,  G03G15/08

CPC classification number: G03G15/0893 ,  G03G15/0822

Abstract: A developing device includes a housing containing a developer, a developer carrier, a developer conveying path, a developer conveying member, and a plurality of paddle members. The developer conveying path includes a first conveying path and a second conveying path. The developer conveying member is disposed in the second conveying path and includes a rotating shaft and spiral blades formed around the rotating shaft. The developer conveying member is rotationally driven to convey the developer in the second direction and feeds the developer to the developer carrier. The plurality of paddle members project in a radial direction from the rotating shaft of the developer conveying member at one circumferential position on the rotating shaft. The plurality of paddle members is contiguously arranged in the axial direction of the rotating shaft to connect the spiral blades adjacent to each other in the axial direction.

Abstract translation: 显影装置包括容纳显影剂，显影剂载体，显影剂输送路径，显影剂输送构件和多个桨状构件的壳体。 显影剂输送路径包括第一输送路径和第二输送路径。 显影剂输送构件设置在第二输送路径中，并且包括旋转轴和围绕旋转轴形成的螺旋叶片。 旋转地驱动显影剂输送构件以沿第二方向输送显影剂，并将显影剂供给显影剂载体。 多个叶片构件在旋转轴的一个圆周位置处从显影剂传送构件的旋转轴在径向方向上突出。 多个叶片构件沿旋转轴的轴向连续地布置，以沿着轴向相互连接的螺旋叶片。

公开(公告)号：US20150117909A1

公开(公告)日：2015-04-30

申请号：US14525633

申请日：2014-10-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Shizuka Ikazaki

IPC: G03G15/08

CPC classification number: G03G15/0877

Abstract: A developer container includes a container housing for storing developer, a cylinder section projecting from the container housing and including a developer discharge port, and a rotary member for conveying the developer to the discharge port. The rotary member includes a rotary shaft rotatably supported and having a first part located in the container housing and a second part located in the cylinder section, and a resilient member projecting from the second part of the rotary shaft in a radial direction of rotation of the rotary member and facing the developer discharge port. The resilient member includes a tip end operable to protrude radially outward out of the developer discharge port after rubbing an inner surface of the cylinder section as the rotary shaft of the rotary member makes rotation.

Abstract translation: 显影剂容器包括用于存储显影剂的容器壳体，从容器壳体突出并包括显影剂排出口的圆筒部分和用于将显影剂输送到排出口的旋转部件。 旋转构件包括可旋转地支撑并具有位于容器壳体中的第一部分和位于气缸部分中的第二部分的旋转轴，以及从旋转轴的第二部分沿着旋转轴的径向方向突出的弹性构件 旋转构件并面向显影剂排出口。 弹性构件包括尖端，其可旋转地旋转时，在摩擦圆筒部的内表面之后径向向外突出到显影剂排出口之外。

公开(公告)号：US20150104208A1

公开(公告)日：2015-04-16

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

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：US08977169B2

公开(公告)日：2015-03-10

申请号：US13677346

申请日：2012-11-15

Applicant: Kyocera Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Takahisa Nakaue ,  Teruhiko Nagashima ,  Takashi Morita

IPC: G03G15/00 ,  G03G15/08

CPC classification number: G03G15/0836 ,  G03G15/087 ,  G03G15/0877 ,  G03G15/0893

Abstract: A development device includes a developer introduction port, a developer conveyance portion, a first conveyance ability suppressing portion, and a connecting conveyance portion. The conveyance ability suppressing portion is disposed on a downstream side of the developer introduction port in a first direction in which the developer is conveyed in order to partially suppress a developer conveyance ability of the developer conveyance portion such that a developer accumulation portion is formed in a position opposing the developer introduction port. A first direction downstream side of the first conveyance ability suppressing portion opposes a first connecting passage in a third direction that intersects the first direction. The connecting conveyance portion is joined to the first direction downstream side of the conveyance ability suppressing portion and opposes the first connecting passage in the third direction in order to pass the developer from a first conveyance passage to a second conveyance passage.

Abstract translation: 显影装置包括显影剂引入口，显影剂输送部，第一输送能力抑制部和连接输送部。 输送能力抑制部分在显影剂输送部的第一方向上设置在显影剂导入口的下游侧，以便部分抑制显影剂输送部的显影剂输送能力，使得显影剂积存部形成在 反对开发商介绍港口的位置。 第一输送能力抑制部的第一方向下游侧与第一方向相交的第三方向的第一连接路相对。 连接输送部分与输送能力抑制部分的第一方向下游侧接合，并且将显影剂从第一输送通道传送到第二输送通道，使第一连接通道沿第三方向相对。

公开(公告)号：US08942600B2

公开(公告)日：2015-01-27

申请号：US14082037

申请日：2013-11-15

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takahisa Nakaue ,  Tamotsu Shimizu ,  Ikuo Makie ,  Kenichi Tamaki ,  Minoru Wada ,  Takefumi Yotsutsuji ,  Shizuka Okada

IPC: G03G15/08

CPC classification number: G03G15/0877 ,  G03G15/0893

Abstract: A developing apparatus according to one aspect of the present disclosure includes a developing roller, a development housing, a first agitating screw, a toner supply inlet, a downstream-side reduction wall, and an upstream-side reduction wall. The developing roller is driven to rotate in the development housing, and carries toner on the circumferential surface thereof. Toner is circulated and conveyed in a first conveying path and a second conveying path in the development housing. The first agitating screw is disposed in the first conveying path, and conveys toner in a first direction. The downstream-side reduction wall is disposed downstream of the toner supply inlet. Further, the upstream-side reduction wall is disposed upstream of the toner supply inlet. An accumulation portion for toner is formed downstream and upstream of the toner supply inlet due to the downstream-side reduction wall and the upstream-side reduction wall.

Abstract translation: 根据本公开的一个方面的显影装置包括显影辊，显影壳体，第一搅拌螺杆，调色剂供给入口，下游侧还原壁和上游侧还原壁。 显影辊被驱动以在显影壳体中旋转，并且在其圆周表面上承载调色剂。 调色剂在显影壳体中的第一输送路径和第二输送路径中循环和输送。 第一搅拌螺杆设置在第一输送路径中，并沿着第一方向输送调色剂。 下游侧还原壁设置在调色剂供应入口的下游。 此外，上游侧还原壁设置在调色剂供应入口的上游。 由于下游侧还原壁和上游侧还原壁，在调色剂供应入口的下游和上游形成调色剂的累积部分。

公开(公告)号：US08843035B2

公开(公告)日：2014-09-23

申请号：US13788708

申请日：2013-03-07

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Shizuka Okada

IPC: G03G15/09 ,  G03G15/08

CPC classification number: G03G15/0877 ,  G03G15/0812 ,  G03G15/0914

Abstract: A developing device includes a developer bearing member, a layer restricting member, a facing magnet and a nonmagnetic member. The developer bearing member has a sleeve for bearing magnetic toner and a fixed magnet included inside the sleeve. The layer restricting member faces one magnetic pole of the fixed magnet, is arranged at a distance from the sleeve and made of a magnetic material. The facing magnet is arranged upstream of the layer restricting member in a rotation direction of the sleeve and at a distance from the sleeve, includes a first facing surface facing a position overlapping with a position with a maximum magnetic force of the one magnetic pole and has a magnetic pole having the same polarity as the one magnetic pole on the first facing surface. The nonmagnetic member is connected at an upstream side of the facing magnet in the rotation direction.

Abstract translation: 显影装置包括显影剂承载构件，层限制构件，面对磁体和非磁性构件。 显影剂承载构件具有用于承载磁性调色剂的套筒和包括在套筒内的固定磁体。 层限制构件面对固定磁体的一个磁极，被布置在距离套筒一定距离处并由磁性材料制成。 所述面对磁体在所述层限制构件的上游位于所述套筒的旋转方向上并且在与所述套筒一定距离处包括面对与所述一个磁极的最大磁力位置重叠的位置的第一面对表面，并且具有 具有与第一面对表面上的一个磁极相同极性的磁极。 非磁性部件沿面向磁体的旋转方向的上游侧连接。

公开(公告)号：US20140140732A1

公开(公告)日：2014-05-22

申请号：US14082037

申请日：2013-11-15

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takahisa Nakaue ,  Tamotsu Shimizu ,  Ikuo Makie ,  Kenichi Tamaki ,  Minoru Wada ,  Takefumi Yotsutsuji ,  Shizuka Okada

IPC: G03G15/08

CPC classification number: G03G15/0877 ,  G03G15/0893

Abstract: A developing apparatus according to one aspect of the present disclosure includes a developing roller, a development housing, a first agitating screw, a toner supply inlet, a downstream-side reduction wall, and an upstream-side reduction wall. The developing roller is driven to rotate in the development housing, and carries toner on the circumferential surface thereof. Toner is circulated and conveyed in a first conveying path and a second conveying path in the development housing. The first agitating screw is disposed in the first conveying path, and conveys toner in a first direction. The downstream-side reduction wall is disposed downstream of the toner supply inlet. Further, the upstream-side reduction wall is disposed upstream of the toner supply inlet. An accumulation portion for toner is formed downstream and upstream of the toner supply inlet due to the downstream-side reduction wall and the upstream-side reduction wall.

Abstract translation: 根据本公开的一个方面的显影装置包括显影辊，显影壳体，第一搅拌螺杆，调色剂供给入口，下游侧还原壁和上游侧还原壁。 显影辊被驱动以在显影壳体中旋转，并且在其圆周表面上承载调色剂。 调色剂在显影壳体中的第一输送路径和第二输送路径中循环和输送。 第一搅拌螺杆设置在第一输送路径中，并沿着第一方向输送调色剂。 下游侧还原壁设置在调色剂供应入口的下游。 此外，上游侧还原壁设置在调色剂供应入口的上游。 由于下游侧还原壁和上游侧还原壁，在调色剂供应入口的下游和上游形成调色剂的累积部分。