公开(公告)号：US20190369523A1

公开(公告)日：2019-12-05

申请号：US16424674

申请日：2019-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akifumi Yamaguchi ,  Yasuhiro Tauchi ,  Eiji Gyotoku ,  Yu Sasaki

IPC: G03G15/06

Abstract: An image forming apparatus includes a developer information acquisition unit. The developer information acquisition unit performs a developer deterioration information acquisition operation. In the developer deterioration information acquisition operation, the developer information acquisition unit acquires a tilt of a measurement straight line representing the relationship between the change amount of the frequency in a first measurement toner image forming operation and the density change amount of the measurement toner image based on the change amount of the frequency in the first measurement toner image forming operation and a result of detecting density of the measurement toner image in a density detecting unit, and acquires a toner charging amount based on the acquired tilt of the measurement straight line and the reference information in the storage unit so as to acquire information relating to deterioration of developer based on the acquired toner charging amount.

公开(公告)号：US11906911B2

公开(公告)日：2024-02-20

申请号：US17863314

申请日：2022-07-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Gyotoku ,  Akihiro Watanabe

IPC: G03G15/08

CPC classification number: G03G15/0891 ,  G03G15/0849 ,  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 toner concentration sensor is arranged at a wall portion of the first conveying chamber in which the first conveying member is arranged. The first and second conveying members are equal to each other in outer diameter and shaft diameter, the outer diameter being 2.3 times the shaft diameter or more but 3.0 times the shaft diameter or less. Where D represents the shaft diameter of the first conveying member, L represents an axial length of the first conveying member, and K represents a distance of a center position of a sensing surface of the toner concentration sensor from a downstream end of the first conveying chamber in the first direction, formula (1) is satisfied: 500

公开(公告)号：US11809096B2

公开(公告)日：2023-11-07

申请号：US17968400

申请日：2022-10-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Watanabe ,  Eiji Gyotoku

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0879 ,  G03G15/0891 ,  G03G2215/0852

Abstract: A toner conveyance device includes a vertical conveyance portion, a horizontal conveyance portion, a conveyance member, and a loosening member. The vertical conveyance portion conveys a toner or a developer containing the toner conveyed therein through an entry port connected to a main-body-side conveyance path by causing the toner or the developer to fall vertically. The horizontal conveyance portion is connected to a lower end of the vertical conveyance portion and conveys the toner or the developer in a horizontal direction by using the conveyance member arranged in the horizontal conveyance portion. The loosening member is arranged so as to be movable between a first position below a connection portion between the main-body-side conveyance path and the entry port and a second position protruding upward beyond the connection portion and reciprocates in a vertical direction at each of the first position and the second position.

公开(公告)号：US11906912B2

公开(公告)日：2024-02-20

申请号：US17968435

申请日：2022-10-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Watanabe ,  Eiji Gyotoku

IPC: G03G15/08 ,  G03G15/00

CPC classification number: G03G15/0891 ,  G03G15/0865 ,  G03G15/0889 ,  G03G15/50 ,  G03G15/0879 ,  G03G2215/0636

Abstract: A toner conveyance device includes a vertical conveyance portion, a horizontal conveyance portion, a conveyance member, and a loosening member. The vertical conveyance portion conveys a toner or developer conveyed therein through an entry port connected to a main-body-side conveyance path by causing the toner or developer to fall vertically. The horizontal conveyance portion is connected to a lower end of the vertical conveyance portion and conveys the toner or developer in a horizontal direction by using the conveyance member. the loosening member is arranged at a first position below a connection portion between the main-body-side conveyance path and the entry port and at a second position protruding upward beyond the connection portion. A toner loosening mode is executable in which the toner or developer is fed into the vertical conveyance portion so as to cause the loosening member to reciprocate at the second position.

公开(公告)号：US10698337B2

公开(公告)日：2020-06-30

申请号：US16424674

申请日：2019-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akifumi Yamaguchi ,  Yasuhiro Tauchi ,  Eiji Gyotoku ,  Yu Sasaki

IPC: G03G15/06 ,  G03G15/08 ,  G03G15/00

Abstract: An image forming apparatus includes a developer information acquisition unit. The developer information acquisition unit performs a developer deterioration information acquisition operation. In the developer deterioration information acquisition operation, the developer information acquisition unit acquires a tilt of a measurement straight line representing the relationship between the change amount of the frequency in a first measurement toner image forming operation and the density change amount of the measurement toner image based on the change amount of the frequency in the first measurement toner image forming operation and a result of detecting density of the measurement toner image in a density detecting unit, and acquires a toner charging amount based on the acquired tilt of the measurement straight line and the reference information in the storage unit so as to acquire information relating to deterioration of developer based on the acquired toner charging amount.

公开(公告)号：US20150378277A1

公开(公告)日：2015-12-31

申请号：US14739084

申请日：2015-06-15

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masaru Hatano ,  Akifumi Yamaguchi ,  Yu Sasaki ,  Ryo Taniguchi ,  Eiji Gyotoku ,  Koji Kuramashi

IPC: G03G15/08

CPC classification number: G03G15/0893 ,  G03G15/0818 ,  G03G15/0921 ,  G03G2215/0863

Abstract: A developing device includes a housing, a developer carrier, a conveying member and a surface layer. The conveying member conveys the developer in the first conveying direction and supplies the developer to the developer carrier. The surface layer is arranged on the circumferential surface of the developer carrier and 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 an 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 a downstream side of the housing in the first conveying direction and an upper end side of the base member at the time of the immersion is arranged in an upstream side of the housing in the first conveying direction.

Abstract translation: 显影装置包括壳体，显影剂载体，输送构件和表面层。 输送构件在第一输送方向上输送显影剂，并将显影剂供给显影剂载体。 表层设置在显影剂载体的圆周表面上并形成在预定的圆柱形基底的表面上。 表面层通过将基底部件浸入浸渍槽中的浸渍方法形成，使得基底部件的轴向沿着垂直方向延伸。 浸渍时的基材的下端侧在第一输送方向上配置在壳体的下游侧，浸渍时的基材的上端侧配置在 壳体处于第一输送方向。

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

IPC: G03G15/08 ,  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：US09366995B2

公开(公告)日：2016-06-14

申请号：US14739084

申请日：2015-06-15

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masaru Hatano ,  Akifumi Yamaguchi ,  Yu Sasaki ,  Ryo Taniguchi ,  Eiji Gyotoku ,  Koji Kuramashi

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0893 ,  G03G15/0818 ,  G03G15/0921 ,  G03G2215/0863

Abstract: A developing device includes a housing, a developer carrier, a conveying member and a surface layer. The conveying member conveys the developer in the first conveying direction and supplies the developer to the developer carrier. The surface layer is arranged on the circumferential surface of the developer carrier and 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 an 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 a downstream side of the housing in the first conveying direction and an upper end side of the base member at the time of the immersion is arranged in an upstream side of the housing in the first conveying direction.

Abstract translation: 显影装置包括壳体，显影剂载体，输送构件和表面层。 输送构件在第一输送方向上输送显影剂，并将显影剂供给显影剂载体。 表层设置在显影剂载体的圆周表面上并形成在预定的圆柱形基底的表面上。 表面层通过将基底部件浸入浸渍槽中的浸渍方法形成，使得基底部件的轴向沿着垂直方向延伸。 浸渍时的基材的下端侧在第一输送方向上配置在壳体的下游侧，浸渍时的基材的上端侧配置在 壳体处于第一输送方向。

公开(公告)号：US09229373B1

公开(公告)日：2016-01-05

申请号：US14733818

申请日：2015-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiji Gyotoku

IPC: G03G15/08

CPC classification number: G03G15/0891 ,  G03G15/0822 ,  G03G15/0877 ,  G03G15/0893 ,  G03G2215/083

Abstract: A developing device includes first and second stirring/transporting members, a developer feeding member, and a developer container that accommodates those components. The first and second stirring/transporting members stir and transport developer. The developer feeding member feeds developer to the first stirring/transporting member. In the developer container, a feeding port through which developer is fed from the developer feeding member to the first stirring/transporting member is formed. The developer feeding member includes a rotary shaft, a first transport blade which stirs and transports developer, a blocking portion which protrudes substantially perpendicularly to the rotary shaft and blocks the developer transported by the first transport blade in a first direction, and a paddle which feeds the developer from a developer supply passage to a first transport chamber.

Abstract translation: 显影装置包括第一和第二搅拌/输送构件，显影剂供给构件和容纳这些构件的显影剂容器。 第一和第二搅拌/输送构件搅拌并运输显影剂。 显影剂供给构件将显影剂供给到第一搅拌/输送构件。 在显影剂容器中形成有从显影剂供给部件向第一搅拌传送部件供给显影剂的供给口。 显影剂供给构件包括旋转轴，搅拌和输送显影剂的第一输送叶片，大致垂直于旋转轴突出的阻挡部分，并且阻挡由第一输送叶片沿第一方向输送的显影剂;以及桨叶， 来自显影剂供应通道的显影剂到第一输送室。

公开(公告)号：US09104168B2

公开(公告)日：2015-08-11

申请号：US14179156

申请日：2014-02-12

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Eiji Gyotoku ,  Masahito Ishino ,  Jun Nakai

IPC: G03G21/20 ,  G03G21/06

CPC classification number: G03G21/06 ,  G03G21/20

Abstract: An image forming apparatus includes an image bearing member, a developing unit, a cleaning unit, and a heating element. The heating element for heating the image bearing member includes: a substrate having a length corresponding to an entire region of the image bearing member in a longitudinal direction of the image bearing member; and a plurality of resistor chips mounted on the substrate. At least either resistance values or spacing intervals of the resistor chips vary in a longitudinal direction of the substrate to ensure that the surface temperature distribution of the image bearing member heated by the heating element is uniform.

Abstract translation: 图像形成装置包括图像承载部件，显影单元，清洁单元和加热元件。 用于加热图像承载部件的加热元件包括：在图像承载部件的纵向方向上具有对应于图像承载部件的整个区域的长度的基板; 以及安装在基板上的多个电阻芯片。 至少电阻片的电阻值或间隔间隔在衬底的纵向方向上变化，以确保由加热元件加热的图像承载构件的表面温度分布是均匀的。