公开(公告)号：US11347164B2

公开(公告)日：2022-05-31

申请号：US17368027

申请日：2021-07-06

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

Abstract: A developing device includes a developer container, a developer carrier, and first and second members for stirring/conveying. The developing container has a first partition wall between first and second chambers, communication portions 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 second partition wall is lower than the first partition wall, and an upper end part of the second partition wall is between upper and lower end parts of the rotary shaft of the second stirring/conveying member.

公开(公告)号：US09658572B2

公开(公告)日：2017-05-23

申请号：US15167284

申请日：2016-05-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami ,  Yu Sasaki

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  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 having a first regulating blade formed next to, downstream of, the second transport blade in the transport direction of the developer inside the second transport chamber, for transporting developer in the same direction as the second transport blade with a smaller transporting force than the second transport blade, and a second regulating blade formed next to, downstream of, the first regulating blade for transporting developer in the opposite direction to the first regulating blade, and a discharge blade formed next to, downstream of, the second regulating blade for transporting developer in the same direction as the second transport blade to discharge the developer through the developer discharge port.

公开(公告)号：US10691052B2

公开(公告)日：2020-06-23

申请号：US16554448

申请日：2019-08-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akifumi Yamaguchi ,  Yasuhiro Tauchi ,  Kenichi Tamaki ,  Koji Suenami

IPC: G03G15/00

Abstract: In the first charge amount acquisition operation, based on density of a plurality of toner images for measurement or based on a direct component of a developing current at the time of forming the plurality of toner images in addition to the density of the plurality of toner images for measurement, the charge amount acquisition section acquires a first toner charge amount that is a charge amount of toner included in the toner image for measurement. In the second charge amount acquisition operation, based on the toner density detected at the time of image formation and a relationship between the first toner charge amount and the toner density detected in the first charge amount acquisition operation, the charge amount acquisition section acquires a second toner charge amount that is a charge amount of the toner in the development device.

公开(公告)号：US20160161879A1

公开(公告)日：2016-06-09

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

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：US12044995B2

公开(公告)日：2024-07-23

申请号：US18160379

申请日：2023-01-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami ,  Norio Kubo ,  Masashi Fujishima

IPC: G03G15/00

CPC classification number: G03G15/5041 ,  G03G15/55 ,  G03G15/757

Abstract: An image forming apparatus includes: a gear that transmits a drive force, which is supplied from a drive unit, to a photosensitive drum; a formation processing unit that, at arrival of each of specific formation timings, uses the photosensitive drum thereby to form a to-be-detected toner image that is based on a to-be-detected image having a specific density; an acquisition processing unit that acquires a variation width of a density in the to-be-detected toner image formed by the formation processing unit; and a determination processing unit that determines a failure timing of the gear based on the variation width for each of the formation timings.

公开(公告)号：US09658575B2

公开(公告)日：2017-05-23

申请号：US15158245

申请日：2016-05-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yu Sasaki ,  Koji Suenami

IPC: G03G15/08

CPC classification number: G03G15/0893 ,  G03G15/0844 ,  G03G15/0877

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, and an annular portion arranged at least either between the second transport blade and the regulating portion or between the regulating portion and the discharge blade.

公开(公告)号：US09429875B1

公开(公告)日：2016-08-30

申请号：US15019552

申请日：2016-02-09

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0844 ,  G03G15/0893 ,  G03G21/1652

Abstract: A developing device according to the present disclosure includes a developer container, a first stirring member, a second stirring member, and a developer carrying member. The developer container has a plurality of conveyance chambers including first and second conveyance chambers, is provided with a developer supply portion and a developer discharge portion and stores a two-component developer. The second stirring member is provided with an electro-conductive regulating portion that is disposed to oppose the developer discharge portion that regulates movement of the developer to the developer discharge portion. An electro-conductive plate is disposed on an inner wall surface of the developer container that opposes the regulating portion. During rotation of the first and second stirring members, by applying an alternating current bias to at least one of the regulating portion and the electro-conductive plate to generate an electric potential difference between the regulating portion and the electro-conductive plate.

Abstract translation: 根据本公开的显影装置包括显影剂容器，第一搅拌构件，第二搅拌构件和显影剂承载构件。 显影剂容器具有包括第一和第二输送室的多个输送室，设置有显影剂供应部分和显影剂排出部分，并存储双组分显影剂。 第二搅拌构件设置有导电调节部分，其设置成与显影剂排出部分相对，其调节显影剂到显影剂排出部分的运动。 导电板设置在显影剂容器的与调节部分相对的内壁表面上。 在第一和第二搅拌构件旋转期间，通过向调节部分和导电板中的至少一个施加交流偏压以在调节部分和导电板之间产生电位差。

公开(公告)号：US20160018759A1

公开(公告)日：2016-01-21

申请号：US14799529

申请日：2015-07-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji Suenami

IPC: G03G15/08

CPC classification number: G03G15/0879

Abstract: A developer conveying device includes a vertical conveyance member and an AC application portion. The vertical conveyance member is an electrically conductive member and conveys developer in a developer conveyance path that extends in a vertical direction, by operating in the path. The AC application portion applies an AC voltage to the vertical conveyance member.

Abstract translation: 显影剂输送装置包括垂直输送构件和AC施加部。 垂直传送构件是导电构件，并且通过在路径中操作而传送在垂直方向上延伸的显影剂传送路径中的显影剂。 AC应用部分向垂直传送部件施加AC电压。

公开(公告)号：US10775727B2

公开(公告)日：2020-09-15

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.

公开(公告)号：US20200073308A1

公开(公告)日：2020-03-05

申请号：US16554448

申请日：2019-08-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Akifumi Yamaguchi ,  Yasuhiro Tauchi ,  Kenichi Tamaki ,  Koji Suenami

IPC: G03G15/00

Abstract: In the first charge amount acquisition operation, based on density of a plurality of toner images for measurement or based on a direct component of a developing current at the time of forming the plurality of toner images in addition to the density of the plurality of toner images for measurement, the charge amount acquisition section acquires a first toner charge amount that is a charge amount of toner included in the toner image for measurement. In the second charge amount acquisition operation, based on the toner density detected at the time of image formation and a relationship between the first toner charge amount and the toner density detected in the first charge amount acquisition operation, the charge amount acquisition section acquires a second toner charge amount that is a charge amount of the toner in the development device.