公开(公告)号：US20230137743A1

公开(公告)日：2023-05-04

申请号：US18050790

申请日：2022-10-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Ryota Okui ,  Yoshihiro Yamagishi ,  Tamotsu Shimizu ,  Kazuhiro Nakachi ,  Kazunori Tanaka

IPC: G03G15/00 ,  G03G15/02

Abstract: An image forming apparatus includes first, second, and third acquisition processing portions. The first acquisition processing portion acquires the potential value of a charged area, charged by the charging member, on the image-carrying member. The second acquisition processing portion acquires a state value regarding the state of a surface layer of the image-carrying member based on the potential value of the charged area acquired by the first acquisition processing portion and the current value of a charging current flowing through the charging member during formation of the charged area. The third acquisition processing portion acquires the electrical resistance value of the transfer member based on the state value acquired by the second acquisition processing portion, the voltage value of a transfer voltage applied to the transfer member, and the current value of a transfer current flowing through the charged area in response to application of the transfer voltage.

公开(公告)号：US20230137321A1

公开(公告)日：2023-05-04

申请号：US18050783

申请日：2022-10-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kazunori Tanaka ,  Yoshihiro Yamagishi ,  Tamotsu Shimizu ,  Kazuhiro Nakachi ,  Ryota Okui

IPC: G03G15/00 ,  G03G15/02

Abstract: An image forming apparatus includes a developing member, a first detection processing portion, and an acquisition processing portion. The developing member conveys developer to a facing portion between the developing member and the image-carrying member. The first detection processing portion detects a first development current for each of a plurality of specific voltages with different DC voltage values applied to the developing member, the first development current flowing, in response to application of the specific voltages, through the facing portion including the developer and a specific exposed area, formed by the light emitting portion, on the image-carrying member. The acquisition processing portion acquires a potential value of the specific exposed area based on the DC voltage values of the specific voltages and current values of the first development current, detected by the first detection processing portion, corresponding to the respective specific voltages.

公开(公告)号：US11131942B1

公开(公告)日：2021-09-28

申请号：US17210345

申请日：2021-03-23

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kazunori Tanaka ,  Yoshihiro Yamagishi ,  Tamotsu Shimizu

IPC: G03G15/06

Abstract: An image forming apparatus includes: a development device which develops an electrostatic latent image formed on a photosensitive drum into a toner image; a charger which charges the photosensitive drum; a development power supply which applies a bias voltage to the development device; an electric current measuring section which measures a development current flowing in the development device; and a calculating section which calculates a surface potential of the photosensitive drum based on the development current. The charger applies charging biases to the photosensitive drum. The electric current measuring section measures a corresponding value of the development current for each development bias voltage applied to the development device. The calculating section calculates, per charging bias, a development bias voltage at which the development current stops flowing as the surface potential, and calculates a correspondence between the surface potential and the charging bias based on calculated values of the surface potential.

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

IPC: G03G15/00 ,  G03G21/00 ,  G03G5/147 ,  G03G5/00 ,  G03G15/08

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.

公开(公告)号：US09915900B1

公开(公告)日：2018-03-13

申请号：US15654811

申请日：2017-07-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takashi Eiki ,  Yoshihiro Yamagishi

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2028 ,  G03G15/2032 ,  G03G2215/2016 ,  G03G2215/2032 ,  G03G2215/2041

Abstract: A fixing device includes a heating belt, a heat source, a pressuring body, a pressing member and a sheet member. The heating belt is endless and heats a medium while being circulated. The heat source supplies heat to the heating belt. The pressuring body forms a nip with the heating belt, rotates so as to circulate the heating belt and presses the medium with the heating belt. The pressing member is disposed inside the heating belt and presses the heating belt against the pressuring body at the nip. The sheet member is held between the heating belt and the pressing member, attached to the pressing member at a center side portion and both end side portions in a longitudinal direction of the sheet member and has a heat shrinkable property. The both end side portions are shiftable in the longitudinal direction greater than the center side portion.

公开(公告)号：US09454115B2

公开(公告)日：2016-09-27

申请号：US14718889

申请日：2015-05-21

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takefumi Yotsutsuji ,  Yoshiharu Kanematsu ,  Yoshihiro Yamagishi ,  Takashi Eiki ,  Eriko Hayashi ,  Hironori Takahashi

IPC: G03G13/20 ,  G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2042 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source and a reflecting member. The fixing belt is arranged rotatably around a rotation axis. The reflecting member reflects the radiant heat radiated from the heat source. The fixing belt has a passing region and a non-passing region. Through the passing region, a recording medium passes. The non-passing region is arranged outside the passing region in a direction of the rotation axis. The reflecting member has a first reflecting part and a second reflecting part. The first reflecting part is arranged at an inner circumferential side of the passing region. The second reflecting part is arranged at an inner circumferential side of the non-passing region. Roughness of a face at the heat source side of the second reflecting part is larger than roughness of a face at the heat source side of the first reflecting part.

Abstract translation: 定影装置包括定影带，加压构件，热源和反射构件。 定影带围绕旋转轴线可旋转地布置。 反射构件反射从热源辐射的辐射热。 定影带具有通过区域和不通过区域。 通过通过区域，通过记录介质。 非通过区域沿着旋转轴线的方向布置在通过区域的外侧。 反射部件具有第一反射部和第二反射部。 第一反射部配置在通过区域的内周侧。 第二反射部配置在不通过区域的内周侧。 第二反射部的热源侧的面的粗糙度大于第一反射部的热源侧的面的粗糙度。

公开(公告)号：US09423728B2

公开(公告)日：2016-08-23

申请号：US14781486

申请日：2015-01-21

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yoshihiro Yamagishi ,  Yoshiharu Kanematsu

IPC: G03G15/20

CPC classification number: G03G15/2007 ,  G03G15/2053 ,  G03G15/206 ,  G03G2215/2035

Abstract: A fixing device according to the present invention includes a fixing belt (22), a pressuring member (23), a heat source (24), a reflecting member (25) reflecting the radiant heat radiated from the heat source (24) to an inner circumference face of the fixing belt (22), a pressing member (27) pressing the fixing belt (22) to a side of the pressuring member (23) and a supporting member (26) supporting the pressing member (27). The reflecting member (25) is arranged between the heat source (24) and the supporting member (26) and configured to be curved or bent so as to project toward a side of the heat source (24). Straight lines (L) connecting a center (Z) of the heat source (24) with both end parts of the supporting member (26) in a conveying direction of a recording medium pass through the reflecting member (25).

Abstract translation: 根据本发明的定影装置包括定影带（22），加压构件（23），热源（24），反射构件（25），其将从热源（24）辐射的辐射热反射到 定影带（22）的内周面，将定影带（22）按压到加压构件（23）的一侧的按压构件（27）和支撑按压构件（27）的支撑构件（26）。 反射构件（25）布置在热源（24）和支撑构件（26）之间，并被构造成弯曲或弯曲以朝向热源（24）的一侧突出。 在记录介质的输送方向上连接热源（24）的中心（Z）与支撑部件（26）的两端部的直线（L）通过反射部件（25）。

公开(公告)号：US20140023403A1

公开(公告)日：2014-01-23

申请号：US13944684

申请日：2013-07-17

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Kuniaki Nakano ,  Eiji Nimura ,  Koji Kuramashi ,  Hiroshi Yamazaki ,  Yoshihiro Yamagishi

IPC: G03G15/08

CPC classification number: G03G15/0865 ,  G03G15/0822 ,  G03G15/0877 ,  G03G15/0893 ,  G03G15/09 ,  G03G2215/0822 ,  G03G2215/0838

Abstract: A developer conveyance device includes a housing and a conveyance member. The conveyance member is supported to the housing and rotates to convey developer. The conveyance member includes a shaft portion, a helical member, and a plurality of reinforcement members. The plurality of reinforcement members are disposed in a circumferential direction of rotation of the conveyance member. When viewing a cross section in a direction intersecting with the rotational axis, an outer circumferential surface of the helical member includes a facing region and a non-facing region, which are defined for one reinforcement member of the plurality of reinforcement members, the facing region being a region where the one reinforcement member of the plurality of reinforcement members is projected on an opposite side of an outer circumferential surface of the helical member through the rotational axis, and the non-facing region being a region of the outer circumferential surface of the helical member which is different from the facing region. The other reinforcement member of the plurality of reinforcement members is disposed in the non-facing region.

Abstract translation: 显影剂输送装置包括壳体和输送构件。 传送构件被支撑到壳体并旋转以传送显影剂。 输送构件包括轴部，螺旋构件和多个加强构件。 多个加强构件设置在输送构件的旋转圆周方向上。 当在与旋转轴线相交的方向上观察横截面时，螺旋构件的外周面包括被限定为多个加强构件中的一个加强构件的面对区域和不面对区域，面对区域 作为多个加强构件中的一个加强构件通过旋转轴线突出在螺旋构件的外周面的相反侧的区域，并且面向非区域是位于螺旋构件的外周面的区域 螺旋构件不同于面对区域。 多个加强构件的另一个加强构件设置在不面向区域中。

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：US11747747B2

公开(公告)日：2023-09-05

申请号：US17901706

申请日：2022-09-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yoshihiro Yamagishi ,  Kazunori Tanaka

IPC: G03G15/06

CPC classification number: G03G15/065

Abstract: An image forming portion applies a bias voltage in which an AC component is superimposed on a DC component between a first carrying member and a second carrying member, and transfers toner from the first carrying member to the second carrying member to form an image on the second carrying member. An AC setting processing portion performs AC calibration to set a magnitude of the AC component of the bias voltage. A potential measurement processing portion measures a surface potential of the first carrying member or the second carrying member based on a target current flowing between the first carrying member and the second carrying member. A drive processing portion executes the AC calibration before measurement of the surface potential in a case where, when measuring the surface potential, an activation condition is satisfied.