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公开(公告)号：US11874615B2
公开(公告)日：2024-01-16
申请号：US17859669
申请日：2022-07-07
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Akihiro Watanabe , Ryo Yamada , Uto Syu , Yuji Toyota , Yasuhiro Tauchi
CPC classification number: G03G15/0891 , G03G15/081 , G03G15/0921 , G03G2215/0609
Abstract: A developing device includes a developing container, a first stirring conveyance member, a second stirring conveyance member, a developer carrying member including a developing sleeve and a magnet, and a regulation member. The regulation pole in the magnet has a region extending over 10° or more in which a maximum value of a vertical magnetic force is not more than 65 [mT] and a vertical magnetic force gradient is not more than 0.3 [mT/°]. A peak position of the vertical magnetic force gradient of the regulation pole is arranged at a position opposed to the second stirring conveyance member, and when a value of the vertical magnetic force gradient and a value of the vertical magnetic force at the peak position of the vertical magnetic force gradient are indicated as A [mT/°] and K [mT], respectively, A≥2.8 and A×K≥62.5 are satisfied.
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公开(公告)号：US09829829B2
公开(公告)日：2017-11-28
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
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.
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3.发明授权Developing device with reverse rotation control, image forming apparatus, and method for controlling developing device 有权具有反向旋转控制的显影装置，图像形成装置以及用于控制显影装置的方法公开(公告)号：US09405219B2
公开(公告)日：2016-08-02
申请号：US14942887
申请日：2015-11-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Akihiro Watanabe
CPC classification number: G03G15/0812 , G03G15/0808 , G03G15/09 , G03G2215/0607
Abstract: A developing device 43 includes a first rotation control portion and a second rotation control portion. When a developing process is performed, the first rotation control portion causes a developer carrying member to rotate in a first rotation direction at a first rotation speed previously determined. When the developing process is not performed, the second rotation control portion causes the developer carrying member to rotate at a second rotation speed V2 faster than a rotation speed V1 during the developing process in a direction X2 reverse to a development rotation direction X1, and then, causes the developer carrying member to rotate at a third rotation speed V3 slower than the second rotation speed V2 in the direction X2.
Abstract translation: 显影装置43包括第一旋转控制部分和第二旋转控制部分。 当执行显影处理时，第一旋转控制部分使得显影剂承载构件以预先确定的第一旋转速度在第一旋转方向上旋转。 当不进行显影处理时，第二旋转控制部分使得显影剂承载构件在显影过程中以与显影旋转方向X1相反的方向X2的转速V1比旋转速度V1快的速度旋转，然后 使得显影剂承载构件在方向X2上以比第二旋转速度V2慢的第三旋转速度V3旋转。
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公开(公告)号：US09239541B2
公开(公告)日：2016-01-19
申请号：US14713799
申请日：2015-05-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Akihiro Watanabe , Akira Matayoshi
IPC: G03G15/08
CPC classification number: G03G15/0822 , G03G15/0812 , G03G15/0813 , G03G15/0818 , G03G15/75
Abstract: A photosensitive drum is axially rotatable and has a surface on which an electrostatic latent image is formed. A developing device includes a development roller spaced from the photosensitive drum. The development roller includes a cylindrical sleeve and a coating layer, and the photosensitive drum includes a cylindrical tube and a functional layer. Each of the coating layer and functional layer is formed by dipping the sleeve or tube into a dipping bath with the sleeve or tube directed axially vertically. An axial end portion of the development roller that is lower during the dipping process is disposed opposite to an axial end portion of the photosensitive drum that is higher during the dipping process, and an axial end portion of the development roller that is higher during the dipping process is disposed opposite to an axial end portion of the photosensitive drum that is lower during the dipping process.
Abstract translation: 感光鼓可轴向旋转并具有形成有静电潜像的表面。 显影装置包括与感光鼓间隔开的显影辊。 显影辊包括圆柱形套筒和涂层，感光鼓包括圆柱形管和功能层。 每个涂层和功能层通过将套筒或管浸入浸渍浴中形成，套筒或管轴向垂直地指向。 显影辊的在浸渍过程中较低的轴向端部设置成与浸渍过程中感光鼓的轴向端部相对较高，而在浸渍过程中显影辊的轴向端部较高 工艺在浸渍过程中与感光鼓的轴向端部相对设置，其较低。
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5.发明授权Image forming apparatus that collects toner that is not used in image development 有权收集未用于图像显影的调色剂的图像形成装置公开(公告)号：US08934799B2
公开(公告)日：2015-01-13
申请号：US13759234
申请日：2013-02-05
Applicant: Kyocera Document Solutions Inc.
Inventor： Akihiro Watanabe
CPC classification number: G03G21/105 , G03G15/0808 , G03G15/0812 , G03G15/0815 , G03G15/0907 , G03G15/0942
Abstract: An image forming apparatus has a first voltage application section for applying a first bias to a magnetic roller, a second voltage application section for applying a second bias to a developing roller, and a controller for controlling the voltages of the first and second voltage application sections and the driving/rotating of the magnetic roller and the developing roller. When no image formation is taking place, the controller can execute a toner collection mode in which, with the first and second biases set at the same potential and the second bias set lower than the voltage applied to an image carrying member, the magnetic roller is rotated in the direction reverse to that in which it is rotated during image formation.
Abstract translation: 图像形成装置具有用于向磁性辊施加第一偏压的第一电压施加部分，用于向显影辊施加第二偏压的第二电压施加部分，以及用于控制第一和第二电压施加部分的电压的控制器 以及磁辊和显影辊的驱动/旋转。 当不进行图像形成时，控制器可以执行调色剂收集模式，其中，当第一和第二偏压设置在相同的电位并且第二偏压设置低于施加到图像承载部件的电压时，磁辊是 在图像形成期间沿与其旋转的方向相反的方向旋转。
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Patent Agency Ranking
6.发明授权Developing device, image forming apparatus and method of controlling developing device 有权显影装置，图像形成装置和控制显影装置的方法公开(公告)号：US08873980B2
公开(公告)日：2014-10-28
申请号：US13711799
申请日：2012-12-12
Applicant: Kyocera Document Solutions Inc.
Inventor： Kensuke Fujihara , Akihiro Watanabe , Nobuyuki Fuchimoto
CPC classification number: G03G15/0907 , G03G15/065
Abstract: A developing device includes a development roller, a magnetic roller, a transformer, a switching portion, output control portion and a capacitor. The development roller is opposite a photoconductor drum. The magnetic roller performs, with a magnetic brush, the supply of a toner to the development roller and the removal of the toner. The transformer generates an alternating-current voltage applied to the development roller. The switching portion passes and interrupts a current to the transformer. The output control portion stepwise changes, when a duty ratio in switching is changed, the duty ratio a plurality of times from a first duty ratio to a second duty ratio. The capacitor has one end connected to the transformer and the other end connected to the switching portion.
Abstract translation: 显影装置包括显影辊，磁辊，变压器，开关部分，输出控制部分和电容器。 显影辊与感光鼓相对。 磁辊通过磁刷将调色剂供应到显影辊并除去调色剂。 变压器产生施加到显影辊的交流电压。 开关部分通过并中断到变压器的电流。 当开关占空比改变时，输出控制部分逐次改变从第一占空比到第二占空比的多次的占空比。 电容器的一端连接到变压器，另一端连接到开关部分。
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7.发明授权公开(公告)号：US11906910B2
公开(公告)日：2024-02-20
申请号：US17863326
申请日：2022-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Eiji Gyotoku , Akihiro Watanabe
IPC: G03G15/08
CPC classification number: G03G15/0849 , G03G15/0891 , G03G15/0893 , G03G15/0896 , G03G15/0853 , G03G2215/083 , G03G2215/0819 , G03G2215/0822 , G03G2215/0827 , G03G2215/0888
Abstract: A development device includes a development container, a first conveying member, a second conveying member, a toner concentration sensor, and a developer carrier. The first and second conveying members are equal to each other in outer diameter and shaft diameter, the outer diameter being 1.3 times the shaft diameter or more but 1.6 times the shaft diameter or less. Where L represents an axial length of the first conveying member, K represents a distance of a center position of the sensing surface of the toner concentration sensor from a downstream end of a first conveying chamber of the development container in the first direction, P represents a pitch of the conveying blade of the first conveying member, and R represents a rotational speed of the first conveying member, formula (1) is satisfied: 30000
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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.
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公开(公告)号：US20160209775A1
公开(公告)日：2016-07-21
申请号：US15002306
申请日：2016-01-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： Akihiro Watanabe
IPC: G03G15/09
CPC classification number: G03G15/0812 , G03G15/0865
Abstract: A developing device includes a developer carrying body, a layer thickness limiting portion, and a rotation control portion. The layer thickness limiting portion includes a base body and a flexible member. The base body protrudes toward a part at a third position between a first position and a second position on the outer circumferential surface of the developer carrying body. The flexible member is a sheet-like member having flexibility, and is attached to the base body such that the flexible member covers, via a gap, a range of the base body from a front end surface facing the developer carrying body to an upper surface, and a bent portion covering a boundary portion between the front end surface and the upper surface of the base body is closer to the outer circumferential surface of the developer carrying body than the other part is.
Abstract translation: 显影装置包括显影剂承载体，层厚度限制部分和旋转控制部分。 层厚限制部分包括基体和柔性构件。 基体在显影剂承载体的外周面上的第一位置和第二位置之间的第三位置朝向部分突出。 柔性构件是具有柔性的片状构件，并且附接到基体，使得柔性构件经由间隙从面向显影剂承载体的前端表面覆盖基体的范围到上表面 并且覆盖基体的前端面和上表面之间的边界部分的弯曲部分比另一部分更靠近显影剂承载体的外周表面。
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10.发明申请DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND METHOD FOR CONTROLLING DEVELOPING DEVICE 有权开发装置，图像形成装置和控制开发装置的方法公开(公告)号：US20160147172A1
公开(公告)日：2016-05-26
申请号：US14942887
申请日：2015-11-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Akihiro Watanabe
IPC: G03G15/09
CPC classification number: G03G15/0812 , G03G15/0808 , G03G15/09 , G03G2215/0607
Abstract: A developing device 43 includes a first rotation control portion and a second rotation control portion. When a developing process is performed, the first rotation control portion causes a developer carrying member to rotate in a first rotation direction at a first rotation speed previously determined. When the developing process is not performed, the second rotation control portion causes the developer carrying member to rotate at a second rotation speed V2 faster than a rotation speed V1 during the developing process in a direction X2 reverse to a development rotation direction X1, and then, causes the developer carrying member to rotate at a third rotation speed V3 slower than the second rotation speed V2 in the direction X2.
Abstract translation: 显影装置43包括第一旋转控制部分和第二旋转控制部分。 当执行显影处理时，第一旋转控制部分使得显影剂承载构件以预先确定的第一旋转速度在第一旋转方向上旋转。 当不进行显影处理时，第二旋转控制部分使得显影剂承载构件在显影过程中以与显影旋转方向X1相反的方向X2的转速V1比旋转速度V1快的速度旋转，然后 使得显影剂承载构件在方向X2上以比第二旋转速度V2慢的第三旋转速度V3旋转。
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