公开(公告)号：US10156812B2

公开(公告)日：2018-12-18

申请号：US15835860

申请日：2017-12-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08 ,  G03G15/09

Abstract: A stirring conveyance member includes a rotary shaft, a first spiral blade, and a second spiral blade. The first spiral blade has first cutouts each provided in a specific region adjacent to and upstream of a point of intersection with the second spiral blade in the conveyance direction of the powder by the first spiral blade. The second spiral blade has second cutouts each provided in a specific region adjacent to and upstream of a point of intersection with the first spiral blade in a conveyance direction of the powder by the second spiral blade. A radial height of the first spiral blade in portions where the first cutouts are provided is lower than a radial height of the second spiral blade in portions where the second cutouts are not provided.

公开(公告)号：US09703235B2

公开(公告)日：2017-07-11

申请号：US15167520

申请日：2016-05-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0844 ,  G03G15/0865 ,  G03G15/0893 ,  G03G2215/083

Abstract: A developing device includes a developer container, a first stirring member, a second stirring member, and a developer carrying member. The second stirring member includes a second transport blade for transporting developer inside a second transport chamber, a regulating portion formed next to, on the downstream side of, the second transport blade in the transport direction of the developer inside the second transport chamber and formed by a transport blade that transports developer in the opposite direction to the second transport blade, a discharge blade formed next to, on the downstream side of, the regulating portion in the transport direction of the developer and transporting developer in the same direction as the second transport blade to discharge the developer through the developer discharge port, a first disk formed between the second transport blade and the regulating portion, and a second disk formed between the regulating portion and the discharge blade.

公开(公告)号：US09535356B2

公开(公告)日：2017-01-03

申请号：US14960068

申请日：2015-12-04

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shinji Otani ,  Norio Kubo ,  Masashi Fujishima ,  Koji Suenami ,  Yoshimi Shimizu ,  Kenichi Tamaki

IPC: G03G21/00 ,  G03G15/02 ,  G03G15/09 ,  G03G15/16 ,  G03G21/08

CPC classification number: G03G15/0275 ,  G03G15/09 ,  G03G15/169 ,  G03G21/08

Abstract: In the case where development is performed by a two-component developing method, a previous charge removal light-emitting portion applies charge removal light to a first charge removal target region of an effective outer circumferential surface of a photosensitive member on which effective outer circumferential surface an electrostatic latent image can be formed. The first charge removal target region includes a part of a magnetic brush contact region of the effective outer circumferential surface and a region of the effective outer circumferential surface between the magnetic brush contact region and a transfer position of a toner image.

Abstract translation: 在通过双组分显影方法进行显影的情况下，先前的电荷去除发光部分将电荷去除光施加到感光部件的有效外周表面的第一电荷去除目标区域， 可以形成静电潜像。 第一电荷去除目标区域包括有效外周表面的磁刷接触区域的一部分和磁刷接触区域和调色剂图像的转印位置之间的有效外圆周表面的区域。

公开(公告)号：US09348262B1

公开(公告)日：2016-05-24

申请号：US14962550

申请日：2015-12-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08 ,  G03G21/10

CPC classification number: G03G15/0889 ,  G03G15/0812 ,  G03G15/0893 ,  G03G21/10 ,  G03G2215/0822 ,  G03G2215/0827 ,  G03G2215/083 ,  G03G2215/0833

Abstract: A developing device has a developer container, first and second stirring members, a developer carrier, a developer supply port, and a developer discharge port. The developer container has transport chambers including the first and second transport chambers, and communication portions through which the first and second transport chambers mutually communicate. The first stirring member has a rotary shaft and a first helical blade. The second stirring member has a rotary shaft and a second helical blade. The second stirring member has a regulating portion for regulating movement of developer toward the developer discharge port. The regulating portion has two or more turns of regulating blades spiraling in the opposite phase to the second helical blade. The gap between the regulating blades and the inner wall surface of the developer container is gradually small from upstream to downstream with respect to the developer transport direction in the second transport chamber.

Abstract translation: 显影装置具有显影剂容器，第一和第二搅拌构件，显影剂载体，显影剂供给口和显影剂排出口。 显影剂容器具有包括第一和第二输送室的输送室以及第一和第二输送室相互连通的连通部。 第一搅拌构件具有旋转轴和第一螺旋叶片。 第二搅拌构件具有旋转轴和第二螺旋叶片。 第二搅拌构件具有用于调节显影剂向显影剂排出口运动的调节部分。 调节部具有与第二螺旋叶片相反的相位旋转的两圈或更多圈的调节叶片。 调节叶片和显影剂容器的内壁表面之间的间隙在第二输送室中相对于显影剂输送方向从上游到下游逐渐变小。

公开(公告)号：US08942579B2

公开(公告)日：2015-01-27

申请号：US13782815

申请日：2013-03-01

Applicant: Kyocera Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08 ,  G03G15/00

CPC classification number: G03G15/0824 ,  G03G15/0849 ,  G03G15/0853 ,  G03G15/556

Abstract: The present disclosure relates to an image forming apparatus including: a developing unit; a developer supply unit; a toner density detecting unit; a mode setting unit; a first supply control unit; a second supply control unit; and a second standard value setting unit. The toner density detecting unit detects toner density. The mode setting unit, when toner density detected by the toner density detecting unit is less than a first standard value and a second standard value that is lower than the first standard value or more, sets a first developer supply mode as a mode for supplying developer to the developing unit and when the toner density detected by the toner density detecting unit is less than the second standard value, sets a second developer supply mode as a mode for supplying developer to the developing unit.

Abstract translation: 本公开涉及一种图像形成装置，包括：显影单元; 开发商供应单位; 调色剂浓度检测单元; 模式设定单元; 第一供应控制单元; 第二供应控制单元; 和第二标准值设定单元。 调色剂浓度检测单元检测调色剂浓度。 模式设定单元，当由调色剂浓度检测单元检测到的调色剂浓度小于第一标准值和低于第一标准值以上的第二标准值时，将第一显影剂供给模式设置为用于供应显影剂的模式 并且当由调色剂浓度检测单元检测到的调色剂浓度小于第二标准值时，将第二显影剂供应模式设置为用于向显影单元供应显影剂的模式。

公开(公告)号：US11599044B2

公开(公告)日：2023-03-07

申请号：US17687475

申请日：2022-03-04

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

Abstract: An image forming apparatus includes a development device, a toner storage part, a drive unit, a control unit, and an image carrying member. The development device includes a development casing, a developer carrying member, a first stirring transport member, a second stirring transport member, a discharge impeller, and a reverse transport impeller. The development casing includes a first partition wall, a communication part, a developer replenishment port, and a developer discharge part. The first stirring transport member includes a first rotation shaft and a first transport impeller. The second stirring transport member includes a second rotation shaft and a second transport impeller. The control unit can perform a developer discharge mode, in which the first rotation shaft and the second rotation shaft are rotated reversely during a non image formation period, so that the developer around the reverse transport impeller is discharged through the developer discharge part.

公开(公告)号：US11314183B2

公开(公告)日：2022-04-26

申请号：US17322298

申请日：2021-05-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masashi Fujishima ,  Norio Kubo ,  Asami Sasaki ,  Yasuhiro Tauchi ,  Tamotsu Shimizu ,  Akira Matayoshi ,  Masaki Kadota ,  Koji Suenami ,  Yuji Toyota

IPC: G03G15/08

Abstract: A developing device includes a developer container, a developer carrier, and first and second stirring/conveying members. The developer container includes a first partition wall partitioning between the two conveying chambers longitudinally, a first communication portion for passing developer from the first to the second conveying chamber, a second communication portion for passing developer from the second to the first conveying chamber, a developer supply port for supplying developer in, a developer discharge portion for discharging excessive developer, a second partition wall arranged, adjacent to the regulating portion, downstream of the second communication portion to partition between the first conveying chamber and the regulating portion, and a shield portion connected to the two partition walls to bridge between them to shield a top part of the second communication portion. A gap is formed between an upper end part of the shield portion and the inner surface of the developer container.

公开(公告)号：US11209752B2

公开(公告)日：2021-12-28

申请号：US17322198

申请日：2021-05-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Asami Sasaki ,  Akira Matayoshi ,  Norio Kubo ,  Koji Suenami ,  Yuji Toyota ,  Tamotsu Shimizu ,  Masashi Fujishima ,  Yasuhiro Tauchi

IPC: G03G15/08

Abstract: A developing device includes a developer container, a developer carrier, and first and second members for stirring/conveying. The developer container includes a first partition wall between first and second chambers, a communication portion through which those chambers communicate at opposite ends of the first partition wall, a developer supply port, and a developer discharge portion. The first member stirs and conveys developer in the first chamber in a first direction. The second member stirs and conveys developer in the second chamber in a second direction and includes a regulating portion and a discharging blade. The developer container includes a second partition wall between the first chamber and the regulating portion. The gap from the upper end of the second partition wall to the inner surface of the developer container is larger than the gap thereto from the upper ends of a first helical blade and the regulating portion.

公开(公告)号：US10599070B2

公开(公告)日：2020-03-24

申请号：US16415639

申请日：2019-05-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

Abstract: A developing device includes a developer container, a developer carrier, first and second stirring/transporting members, a driving motor, first and second magnetic permeability sensors, and a control portion. The first magnetic permeability sensor is arranged in a first conveying chamber in the developer container, in a region other than a part facing a communication portion and senses the toner concentration in developer in the developer container. The second magnetic permeability sensor is arranged in a second conveying chamber in the developer container, in a region between a regulating portion and a downstream end of the developer carrier in the second direction. The control portion controls the supply amount of developer based on the output value of the first magnetic permeability sensor, and calculates the stable volume of developer in the developer container based on the difference between the output values of the first and second magnetic permeability sensors.

公开(公告)号：US20190369537A1

公开(公告)日：2019-12-05

申请号：US16424816

申请日：2019-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akifumi Yamaguchi ,  Koji Suenami ,  Yasushi Imanishi ,  Tamotsu Shimizu

IPC: G03G15/00

Abstract: An image forming apparatus includes a storage unit and a charging amount acquisition unit. The charging amount acquisition unit performs a charging amount acquisition operation for forming a measurement toner image on the image carrier while changing the frequency of the alternating current voltage of the development bias with a potential difference in a direct current voltage between the developing roller and the image carrier being kept constant, acquiring 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, and acquiring the charging amount of the toner based on the acquired tilt of the measurement straight line and the reference information in the storage unit.