公开(公告)号：US20230213878A1

公开(公告)日：2023-07-06

申请号：US18147207

申请日：2022-12-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Tamaki

IPC: G03G15/08

CPC classification number: G03G15/0848

Abstract: A processor causes a printing portion to execute test image transfer processing for transferring a plurality of test toner images onto an area outside a secondary transfer area on a surface of an intermediate transfer member, and secondary voltage stop processing for stopping a supply of a secondary transfer voltage. The processor acquires a plurality of first sensing densities. The processor causes the printing portion to execute the test image transfer processing and secondary voltage supply processing for supplying the secondary transfer voltage. The processor acquires a plurality of second sensing densities. The processor compares the plurality of first sensing densities and the plurality of second sensing densities to determine a state of a toner charging amount in each of the plurality of test toner images.

公开(公告)号：US10788771B2

公开(公告)日：2020-09-29

申请号：US16424536

申请日：2019-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yasushi Imanishi ,  Kenichi Tamaki

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

Abstract: An image forming apparatus includes a storage unit and a charging amount acquisition unit. The charging amount acquisition unit forms a measurement toner image on the image carrier while changing the frequency of the alternating current voltage of the development bias, acquires 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 based on the change amount of the frequency and a result of detecting density of the measurement toner image in the density detecting unit, and acquires 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：US20170115607A1

公开(公告)日：2017-04-27

申请号：US15299199

申请日：2016-10-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Tamaki

IPC: G03G15/08

CPC classification number: G03G15/0891 ,  G03G15/0893

Abstract: An image forming apparatus includes a developing portion, a first rotation control portion, and a second rotation control portion. The developing portion has a conveying member configured to convey a developer within a circulation-conveyance passage, and a reducing portion provided in the conveying member and configured to reduce an ability to convey the developer. The first rotation control portion is configured to rotate the conveying member at a predetermined first speed when a printing process is executed. The second rotation control portion is configured to suspend execution of the printing process and rotate the conveying member at a second speed lower than the first speed, when an average coverage rate per page of a printed matter having a predetermined reference number of consecutively printed pages exceeds a predetermined threshold.

公开(公告)号：US09063468B2

公开(公告)日：2015-06-23

申请号：US14180793

申请日：2014-02-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Minoru Wada ,  Takahisa Nakaue ,  Tamotsu Shimizu ,  Ikuo Makie ,  Kenichi Tamaki ,  Takefumi Yotsutsuji ,  Shizuka Okada

IPC: G03G15/08 ,  G03G15/09

CPC classification number: G03G15/0921 ,  G03G15/0865 ,  G03G2215/0838

Abstract: A developing device includes: a housing, a refill developer storage part, a developing roller, a developer conveyance path, a developer receiving port, a conveyance member, and a magnetic member. The developing roller is driven into rotation in the developing housing and carries a toner on a circumferential surface thereof. The toner is conveyed inside the first conveyance path and the second conveyance path of the developing housing in a circulating manner. A first stirring screw is disposed on the first conveyance path and conveys the toner in a first direction. Downstream of the toner refill port, a magnet is arranged. The magnetic member forms a magnetic brush from a top panel of the developing housing towards the first stirring screw. A refill toner flowed-in through the toner refill port is so conveyed as to fall below the magnetic brush whereby the refill toner is favorably stirred with a surrounding toner.

Abstract translation: 显影装置包括：外壳，再充填显影剂储存部分，显影辊，显影剂输送路径，显影剂接收口，输送部件和磁性部件。 显影辊在显影壳体中被驱动旋转并在其圆周表面上承载调色剂。 调色剂以循环的方式在显影箱的第一输送路径和第二输送路径内传送。 第一搅拌螺杆设置在第一输送路径上并沿着第一方向输送调色剂。 在调色剂补充口的下游配置有磁铁。 磁性构件从显影壳体的顶板朝向第一搅拌螺杆形成磁刷。 通过调色剂填充口流入的再填充调色剂被输送以便落在磁刷下方，由此再充填调色剂与周围的调色剂有利地搅拌。

公开(公告)号：US20140147175A1

公开(公告)日：2014-05-29

申请号：US14090268

申请日：2013-11-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Ikuo Makie ,  Kenichi Tamaki ,  Minoru Wada ,  Shizuka Okada ,  Tamotsu Shimizu

IPC: G03G15/08

CPC classification number: G03G15/0879 ,  G03G2215/0827 ,  G03G2215/083 ,  G03G2215/0833

Abstract: A developer storage container includes a container main body, a tubular portion projecting from the container main body, and a rotary member extending from the container main body to the tubular portion. The rotary member includes a first section located in the container main body and a second section located in the tubular portion. A first conveying member for conveying developer in a first conveying direction is arranged on the second section of a rotary shaft, and a second conveying member for conveying the developer in a second conveying direction is arranged radially outwardly of the first conveying member around the first section. A first flexible member radially extending to a side outward of the second conveying member and a second flexible member radially extending to a side outward of the second conveying member and having a shorter length than the first flexible member are mounted on the rotary shaft.

Abstract translation: 显影剂储存容器包括容器主体，从容器主体突出的管状部分和从容器主体延伸到管状部分的旋转部件。 旋转构件包括位于容器主体中的第一部分和位于管状部分中的第二部分。 用于在第一输送方向上输送显影剂的第一输送构件设置在旋转轴的第二部分上，并且用于沿第二输送方向输送显影剂的第二输送构件围绕第一部分径向向外设置在第一输送构件的外侧 。 径向延伸到第二输送构件外侧的第一柔性构件和径向延伸到第二输送构件的外侧并具有比第一柔性构件更短的长度的第二柔性构件安装在旋转轴上。

公开(公告)号：US20130084107A1

公开(公告)日：2013-04-04

申请号：US13630718

申请日：2012-09-28

Applicant: Kyocera Document Solutions, Inc.

Inventor： Kenichi Tamaki ,  Takahisa Nakaue ,  Tamotsu Shimizu ,  Ikuo Makie ,  Eiji Nimura ,  Koji Kuramashi ,  Masaki Hayashi ,  Yoshihiro Yamagishi

IPC: G03G15/08

CPC classification number: G03G15/0891 ,  G03G15/0877

Abstract: A developer case includes a main body, a first transportation portion, a first transportation member, a supply member, a discharge port, and a second transportation portion. The main body contains developer. The first transportation portion has a first region that receives developer from the main body and a second region that extends from the first region in a first direction. The first transportation member transports developer in the first direction. The supply member supplies developer to the first region. Developer is discharged through the discharge port. The second transportation portion has an inlet port communicating with the second region. Developer that has not been discharged through the discharge port is supplied to the second transportation portion through the inlet port. The second transportation portion transports developer in a second direction.

Abstract translation: 显影剂盒包括主体，第一输送部，第一输送部件，供给部件，排出口以及第二输送部。 主体包含开发者。 第一输送部分具有从主体接收显影剂的第一区域和从第一区域沿第一方向延伸的第二区域。 第一批运输工具运输开发商的第一个方向。 供应商向第一个地区供应开发商。 显影剂通过排放口排出。 第二输送部具有与第二区域连通的入口。 未通过排出口排出的显影剂通过入口供给到第二输送部。 第二输送部分沿第二方向输送显影剂。

公开(公告)号：US11143980B2

公开(公告)日：2021-10-12

申请号：US17178548

申请日：2021-02-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Kanako Morimoto ,  Kazunori Tanaka ,  Kenichi Tamaki

IPC: G03G15/00 ,  G03G15/06

Abstract: An image forming apparatus includes a plurality of image forming units, a developing voltage power supply, a density detection device, a current detection unit, and a control unit. The plurality of image forming units form an image and substantially same development conditions are set to evenly divide an image density among the image forming units. The control unit detects whether there is an anomaly in a developing device, based on a toner charge amount calculated based on a DC component of developing current when a reference image is formed on an image carrier by each of the developing devices and a density of the reference image. When an anomaly is detected in any of the developing devices, the control unit inhibits use of the image forming unit including the developing device, and resets the development conditions to evenly divide the image density among the usable image forming units.

公开(公告)号：US10534281B2

公开(公告)日：2020-01-14

申请号：US16182087

申请日：2018-11-06

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Hiroka Itani ,  Kenichi Tamaki

IPC: G03G15/02 ,  G03G21/06 ,  D02G3/12

Abstract: An image forming apparatus has an image carrier, an electrifying member, and a charge eliminating device, and eliminates remaining charge on the surface of the image carrier by the charge eliminating device. The charge eliminating device includes a discharge member. The discharge member includes an electro conductive knit fabric knitted in a cylindrical shape using twisted yarn made of twisted metal fibers and a support member having a cylindrical shape and inserted in the electro conductive knit fabric, and is disposed to face the image carrier in a noncontact manner. A magnet member is disposed inside the image carrier within a charge elimination nip width between two tangential lines of an outer circumference surface of the discharge member, the two tangential lines being parallel to a straight line passing through a rotation center of the image carrier and a center axis of the discharge member.

公开(公告)号：US10331066B2

公开(公告)日：2019-06-25

申请号：US15973571

申请日：2018-05-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Tamaki

IPC: G03G15/00 ,  G03G15/08

Abstract: In an image forming device including a volume supply type developing device, generation of an aggregate of a developer on a back surface of a layer thickness regulating member is suppressed, while occurrence of an image failure caused by the aggregate is suppressed. An image forming device includes: a photosensitive drum; a developing device including a developing roller; a toner container including a toner sensor; and a control portion. According to an increase or decrease of a retention part formed in a first transport path, a toner flows into the developing device from the toner container. The control portion causes the developing roller to reversely rotate at predetermined timing when the toner sensor senses that a residual amount of a toner in the toner container falls below a predetermined threshold value.

公开(公告)号：US20180329344A1

公开(公告)日：2018-11-15

申请号：US15973571

申请日：2018-05-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Tamaki

IPC: G03G15/08

CPC classification number: G03G15/50 ,  G03G15/0856 ,  G03G15/0877 ,  G03G15/0889 ,  G03G15/0893 ,  G03G15/556

Abstract: In an image forming device including a volume supply type developing device, generation of an aggregate of a developer on a back surface of a layer thickness regulating member is suppressed, while occurrence of an image failure caused by the aggregate is suppressed. An image forming device includes: a photosensitive drum; a developing device including a developing roller; a toner container including a toner sensor; and a control portion. According to an increase or decrease of a retention part formed in a first transport path, a toner flows into the developing device from the toner container. The control portion causes the developing roller to reversely rotate at predetermined timing when the toner sensor senses that a residual amount of a toner in the toner container falls below a predetermined threshold value.