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公开(公告)号：US10185281B2
公开(公告)日：2019-01-22
申请号：US15953039
申请日：2018-04-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Yoshihiro Yamagishi , Akifumi Yamaguchi , Koji Uno , Kenichi Kasama , Yuta Kitabayashi , Nobuyuki Hayashi
Abstract: An image forming apparatus has a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a polishing member, a driving device, a voltage applying device, a torque detector, and a control portion. The photosensitive member has a photosensitive layer and a surface protection layer formed on the surface of the photosensitive layer. The polishing member has an elastic layer on its circumferential surface, and rotates with a linear velocity difference from that of the photosensitive member. The torque detector detects the torque of the driving device. The control portion estimates an attachment condition of discharge products to the surface of the photosensitive member based on the torque of the driving device detected by the torque detector. When the torque is equal to or higher than a predetermined value, the control portion performs an image degradation suppression process.
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公开(公告)号：US09310718B2
公开(公告)日：2016-04-12
申请号：US14084416
申请日：2013-11-19
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Tamotsu Shimizu , Shizuka Okada , Takefumi Yotsutsuji , Akifumi Yamaguchi
IPC: G03G15/08
CPC classification number: G03G15/0877 , G03G15/0893
Abstract: In a development device, a developer carrier arranged in a housing containing a one-component developer has a circumferential surface carrying the developer. A developer conveying path includes one conveying path along the developer carrier in a first direction and another conveying path in a second direction opposite to the first direction. The developer is circulated and conveyed between the conveying paths. A developer conveying member is arranged in the one conveying path and rotationally driven to convey the developer along the first direction and to supply the developer to the developer carrier. A layer thickness adjusting member is arranged at a distance from the circumferential surface to adjust a layer thickness of the developer supplied to the developer carrier. The developer carrier has a circumferential speed Vd and the developer conveying member has a circumferential speed Vs so that a circumferential speed ratio Vd/Vs satisfies a relationship represented by 1.3≦Vd/Vs≦5.0.
Abstract translation: 在显影装置中，布置在包含单组分显影剂的壳体中的显影剂载体具有携带显影剂的圆周表面。 显影剂输送路径包括沿着第一方向沿着显影剂载体的一个输送路径和在与第一方向相反的第二方向上的另一输送路径。 显影剂在传送路径之间循环传送。 显影剂输送构件布置在一个输送路径中并旋转驱动以沿着第一方向输送显影剂，并将显影剂供应到显影剂载体。 层厚度调节构件布置成与圆周表面一段距离，以调节供应到显影剂载体的显影剂的层厚度。 显影剂载体具有圆周速度Vd，并且显影剂传送构件具有圆周速度Vs，使得圆周速度比Vd / Vs满足由1.3＆nlE; Vd / Vs＆nlE; 5.0表示的关系。
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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
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.
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公开(公告)号：US20190219945A1
公开(公告)日：2019-07-18
申请号：US16240896
申请日：2019-01-07
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Yasuhiro Tauchi , Akifumi Yamaguchi
CPC classification number: G03G15/0812 , G03G15/0808 , G03G15/09 , G03G15/0921
Abstract: A developing device includes a developing roller and a layer thickness regulating member. The developing roller includes a fixed magnet and a sleeve. The layer thickness regulating member includes a regulating body portion and an upstream regulating portion, and the upstream regulating portion includes an upstream magnetic member and a nonmagnetic member. Developer is hardly strongly jammed in an area between a first magnetic field concentration point of the regulating body portion and a second magnetic field concentration point of the upstream regulating portion. Thus, even if the sleeve of the developing roller is rotated at a higher speed than before, the developer is stably regulated by the layer thickness regulating member.
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公开(公告)号：US10175608B2
公开(公告)日：2019-01-08
申请号：US15457063
申请日：2017-03-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kenichi Tamaki , Tamotsu Shimizu , Akifumi Yamaguchi
Abstract: A developing device includes a developing roller, a conveyor roller and a developer stirring unit. The developing roller is arranged to face a photoconductive drum at a predetermined developing position. The developing roller includes a fixed first magnet and a first sleeve. The conveyor roller is arranged to face the developing roller at a predetermined facing position. The conveyor roller includes a fixed second magnet and a second sleeve. The developer stirring unit stirs the developer and supplies the developer to the conveyor roller. The first magnet includes a first magnetic pole composed of a predetermined magnetic pole and a second magnetic pole arranged downstream of and adjacent to the first magnetic pole and having the same polarity as the first magnetic pole. The developer is transferred from the developing roller to the conveyor roller after passing through a repulsive magnetic field formed by the first and second magnetic poles.
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Patent Agency Ranking
公开(公告)号：US20160131996A1
公开(公告)日：2016-05-12
申请号：US14894305
申请日：2015-04-01
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Koji Kuramashi , Akifumi Yamaguchi
IPC: G03G15/08
CPC classification number: G03G15/0887 , G03G15/0893
Abstract: An image forming apparatus of the present invention includes a developing device. In a case body of the developing device, a first storage chamber and a second storage chamber are formed. A first agitating screw is provided in the first storage chamber and a second agitating screw is provided in the second storage chamber. A developing roller is provided in the second storage chamber. A control portion controls driving of a first motor and a second motor. When toner installation is performed, the control portion controls driving of the first motor at a rotational speed higher than a rotational speed for development operation in a state where the second motor is stopped. When a certain condition is satisfied, the control portion starts control of driving of the second motor, to drive rotation of the second motor.
Abstract translation: 本发明的图像形成装置包括显影装置。 在显影装置的壳体中形成有第一储存室和第二储存室。 第一搅拌螺杆设置在第一储存室中，第二搅拌螺杆设置在第二储存室中。 显影辊设置在第二储存室中。 控制部控制第一电动机和第二电动机的驱动。 当进行调色剂安装时，控制部在第二电动机停止的状态下以高于用于显影操作的转速的转速控制第一电动机的驱动。 当满足一定条件时，控制部开始控制第二电动机的驱动，以驱动第二电动机的旋转。
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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。
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公开(公告)号：US08958724B2
公开(公告)日：2015-02-17
申请号：US14085057
申请日：2013-11-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takahisa Nakaue , Minoru Wada , Shizuka Okada , Takefumi Yotsutsuji , Akifumi Yamaguchi , Tamotsu Shimizu
IPC: G03G15/08
CPC classification number: G03G15/0893 , G03G15/0879
Abstract: A developing device of this disclosure has: a housing, a developing roller, a developer conveying path, a partition board, a second communication path, a developer receiving port, a first conveying member, a second conveying member, and a conveyance capability inhibition part. A toner is cyclically conveyed in a first conveying path and a second conveying path. A first stirring screw is disposed in the first conveying path and driven into ration around a first rotation axis for toner conveyance. Formed downstream of the first stirring screw by the conveyance capability inhibition part is a toner accumulation part, and the amount of toner refilled from a toner refill port is adjusted. Where an aperture area of the first communication path is A1 and a circular area formed by an outer circumferential edge of the first stirring screw in section orthogonal to the first rotation axis is A2, relationship 0.5×A2
Abstract translation: 本公开的显影装置具有：壳体，显影辊，显影剂输送路径，隔板，第二连通路径，显影剂接收口，第一输送构件，第二输送构件和输送能力抑制部 。 调色剂在第一输送路径和第二输送路径中循环输送。 第一搅拌螺杆设置在第一输送路径中并被驱动成围绕用于调色剂输送的第一旋转轴线的定量。 通过输送能力抑制部分在第一搅拌螺杆的下游形成调色剂积累部分，并且调节从调色剂补充口重新填充的调色剂量。 在第一连通路径的开口面积为A1，由与第一旋转轴线正交的截面形状的第一搅拌螺杆的外周缘形成的圆形区域为A2的情况下，满足关系式0.5×A2
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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.
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公开(公告)号：US09377718B2
公开(公告)日：2016-06-28
申请号：US14894305
申请日：2015-04-01
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji Kuramashi , Akifumi Yamaguchi
IPC: G03G15/08
CPC classification number: G03G15/0887 , G03G15/0893
Abstract: An image forming apparatus of the present invention includes a developing device. In a case body of the developing device, a first storage chamber and a second storage chamber are formed. A first agitating screw is provided in the first storage chamber and a second agitating screw is provided in the second storage chamber. A developing roller is provided in the second storage chamber. A control portion controls driving of a first motor and a second motor. When toner installation is performed, the control portion controls driving of the first motor at a rotational speed higher than a rotational speed for development operation in a state where the second motor is stopped. When a certain condition is satisfied, the control portion starts control of driving of the second motor, to drive rotation of the second motor.
Abstract translation: 本发明的图像形成装置包括显影装置。 在显影装置的壳体中形成有第一储存室和第二储存室。 第一搅拌螺杆设置在第一储存室中，第二搅拌螺杆设置在第二储存室中。 显影辊设置在第二储存室中。 控制部分控制第一电动机和第二电动机的驱动。 当进行调色剂安装时，控制部在第二电动机停止的状态下以高于用于显影操作的转速的转速控制第一电动机的驱动。 当满足一定条件时，控制部开始控制第二电动机的驱动，以驱动第二电动机的旋转。
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