公开(公告)号：US08879938B2

公开(公告)日：2014-11-04

申请号：US14027363

申请日：2013-09-16

Applicant: Kyocera Document Solutions Inc.

Inventor： Eiji Gyotoku

IPC: G03G15/06

CPC classification number: G03G15/065

Abstract: A developing device of the present disclosure has a developer bearing member, a toner bearing member, a bias controller. With respect to a duty ratio of the alternating current bias of a polarity with which the toner is moved from the developer bearing member to the toner bearing member, a second duty ratio that is a duty ratio of the collection bias is set to be smaller than a first duty ratio that is a duty ratio of the development bias. When a transition is made from the development operation to the collection operation, in a state where the developer bearing member and the toner bearing member are being driven to rotate, the bias controller performs control so that the bias applier applies the alternating current bias having a third duty ratio that is smaller than the first duty ratio and larger than the second duty ratio.

Abstract translation: 本公开的显影装置具有显影剂承载部件，调色剂承载部件，偏置控制器。 关于调色剂从显影剂承载部件移动到调色剂承载部件的极性的交流偏压的占空比，作为收集偏压的占空比的第二占空比被设定为小于 作为显影偏压的占空比的第一占空比。 当从显影操作到收集操作进行转换时，在显影剂承载部件和调色剂承载部件被驱动旋转的状态下，偏置控制器执行控制，使得偏置施加器施加具有 第三占空比小于第一占空比并且大于第二占空比。

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

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：US09141072B2

公开(公告)日：2015-09-22

申请号：US14181370

申请日：2014-02-14

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Eiji Gyotoku ,  Jun Nakai ,  Masahito Ishino

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

CPC classification number: G03G21/0064 ,  G03G21/0094 ,  G03G21/20

Abstract: An image forming apparatus includes a heating element, an interior temperature/humidity detection section, and a controller. The heating element is conducted during connection of the image forming apparatus to an external power source to heat an image bearing member. The interior temperature/humidity detection section detects temperature and humidity in the interior of the image forming apparatus. The controller performs a refresh operation when a relative humidity calculated on the basis of the temperature and humidity detected by the interior temperature/humidity detection section immediately after the image forming apparatus is connected to the external power source is higher than the preset value. The refresh operation is an operation for supply of developer from a development device to the image bearing member and for polish of the surface of the image bearing member with the use of a polishing member.

Abstract translation: 图像形成装置包括加热元件，内部温度/湿度检测部和控制器。 在图像形成装置连接到外部电源以加热图像承载部件时，加热元件被传导。 内部温度/湿度检测部分检测图像形成装置内部的温度和湿度。 当在图像形成装置刚刚连接到外部电源之后，基于由内部温度/湿度检测部检测到的温度和湿度计算的相对湿度高于预设值时，控制器执行刷新操作。 刷新操作是将显影剂从显影装置供应到图像承载部件并且通过使用抛光部件对图像承载部件的表面进行抛光的操作。

公开(公告)号：US09122199B2

公开(公告)日：2015-09-01

申请号：US14459199

申请日：2014-08-13

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Gyotoku

IPC: G03G15/08

CPC classification number: G03G15/0849 ,  G03G15/0856 ,  G03G15/0889 ,  G03G15/0891 ,  G03G15/0893

Abstract: A developing device includes a developing container, a first agitating feeding member, a second agitating feeding member, a first developer delivery portion, a second developer delivery portion, and a toner sensor. The developing container includes a first transport path and a second transport path. The first agitating feeding member and the second agitating feeding member agitate and feed developer. The first developer delivery portion delivers the developer from the first transport path to the second transport path. The second developer delivery portion delivers the developer from the second transport path to the first transport path. The toner sensor is disposed at a part of the first transport path near the first developer delivery portion. A ceiling height of a part of the first transport path facing the first developer delivery portion is larger than a ceiling height of other part of the first transport path.

Abstract translation: 显影装置包括显影容器，第一搅拌进给构件，第二搅拌进给构件，第一显影剂输送部分，第二显影剂输送部分和调色剂传感器。 显影容器包括第一输送路径和第二输送路径。 第一搅拌进料构件和第二搅拌进料构件搅拌并进料显影剂。 第一显影剂传送部分将显影剂从第一传送路径传送到第二传送路径。 第二显影剂传送部分将显影剂从第二传送路径传送到第一传送路径。 调色剂传感器设置在靠近第一显影剂传送部分的第一传送路径的一部分。 面向第一显影剂输送部分的第一输送路径的一部分的天花板高度大于第一输送路径的其他部分的天花板高度。

公开(公告)号：US09042767B2

公开(公告)日：2015-05-26

申请号：US14179234

申请日：2014-02-12

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Jun Nakai ,  Eiji Gyotoku ,  Masahito Ishino

IPC: G03G15/00 ,  G03G21/06

CPC classification number: G03G15/50 ,  G03G15/657 ,  G03G21/06

Abstract: An image forming apparatus includes an image bearing member, a charging unit, a laser scanning unit, a developing unit, a transfer member, a recording medium conveyance path, a cleaning unit, and a heating element. The recording medium conveyance path includes a resin member that forms a conveyance surface. The resin member has a concave portion at a location closer to the transfer member than to the image bearing member. The heating element for heating the image bearing member is accommodated in the concave portion. The heating element is disposed downstream from the contact point between the image bearing member and the transfer member in the conveyance direction in which a recording medium is conveyed through the recording medium conveyance path. The developing unit is located upstream from the contact point between the image bearing member and the transfer member in the conveyance direction of the recording medium.

Abstract translation: 图像形成装置包括图像承载部件，充电单元，激光扫描单元，显影单元，转印部件，记录介质输送路径，清洁单元和加热元件。 记录介质输送路径包括形成输送面的树脂部件。 树脂构件在比图像承载构件更靠近转印构件的位置处具有凹部。 用于加热图像承载部件的加热元件容纳在凹部中。 加热元件设置在图像承载部件和转印部件之间的接触点的下游，在输送方向上记录介质通过记录介质输送路径传送。 显影单元在记录介质的输送方向上位于图像承载部件和转印部件之间的接触点的上游。