公开(公告)号：US20230075031A1

公开(公告)日：2023-03-09

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

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.

公开(公告)号：US11573501B2

公开(公告)日：2023-02-07

申请号：US17474508

申请日：2021-09-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yoshihiro Yamagishi ,  Tamotsu Shimizu ,  Kazunori Tanaka

IPC: G03G15/00 ,  G03G15/06 ,  G03G15/02

Abstract: An image forming apparatus includes an image carrier, a charging device, a developing device, a transfer device, a development power supply, a current measurement device, and a processor. The development power supply applies a predetermined bias voltage to the developing device. The processor functions as a calculator and a controller. The calculator calculates a surface potential of the image carrier based on the development current measured by the current measurement device. The controller controls the charging device, the developing device, the transfer device, and the development power supply. The controller sets a tentative transfer current to be flowed through the transfer device while the calculator calculates the surface potential.

公开(公告)号：US10545447B2

公开(公告)日：2020-01-28

申请号：US16235078

申请日：2018-12-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuta Kitabayashi ,  Yoshihiro Yamagishi ,  Kenichi Kasama ,  Koji Uno ,  Nobuyuki Hayashi

IPC: G03G15/20 ,  G03G15/00

Abstract: An image forming apparatus has an image forming portion, a fixing device, a temperature sensing device, and a control portion. The fixing device has a fixing member having a heated rotary member and a pressing member forming a fixing nip by making contact with the heated rotary member. The temperature sensing device senses the surface temperature of at least one of the heated rotary member and the pressing member in a plurality of regions in the axial direction. The control portion estimates the thickness distribution of the surface layer of at least one of the heated rotary member and the pressing member in the axial direction based on the time taken for the surface temperature in the plurality of regions to reach the predetermined temperature, and thereby estimates the lifetime of at least one of the heated rotary member or the pressing member based on the estimated thickness distribution.

公开(公告)号：US09436141B2

公开(公告)日：2016-09-06

申请号：US14994751

申请日：2016-01-13

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takefumi Yotsutsuji ,  Yoshihiro Yamagishi ,  Takashi Eiki

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  B65G2811/093 ,  G03G15/205 ,  G03G15/2053 ,  G03G2215/00156 ,  G03G2215/2016 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a temperature sensor and a controller. A detected region whose temperature is detected by the temperature sensor is formed in the fixing belt, and an elastic layer of the detected region is provided with a hole in a part thereof in a circumferential direction. The controller judges that the fixing belt is rotating in a case where the temperature detected by the temperature sensor alternately increases and decreases in a state that the heat source is heating the fixing belt, and judges that the fixing belt is not rotating in a case where the temperature detected by the temperature sensor does not alternately increase and decrease in the state that the heat source is heating the fixing belt.

Abstract translation: 定影装置包括定影带，加压构件，热源，按压构件，温度传感器和控制器。 在定影带上形成有由温度传感器检测出温度的检测区域，检测区域的弹性层的圆周方向上设有孔。 在热源正在加热定影带的状态下，由温度传感器检测到的温度交替地升高并降低的情况下，控制器判断为定影带旋转，并判断在定影带不旋转的情况下， 在热源加热定影带的状态下，温度传感器检测到的温度不会交替地增加和减少。

公开(公告)号：US09405246B2

公开(公告)日：2016-08-02

申请号：US14933567

申请日：2015-11-05

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yoshihiro Yamagishi ,  Satoshi Ishii ,  Takashi Eiki ,  Takefumi Yotsutsuji

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2064

Abstract: A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member and a first heating stop device. The fixing belt is provided to be rotatable around a rotation axis. The pressuring member is configured to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source is arranged at an inner diameter side of the fixing belt, provided at a position displaced from the rotation axis and configured to heat the fixing belt. The pressing member is configured to press the fixing belt to a side of the pressuring member. The first heating stop device is configured to face an outer circumferential face of a closest part to the heat source of the fixing belt and to operate at a first operating temperature so as to stop the heat source from heating the fixing belt.

Abstract translation: 定影装置包括定影带，加压构件，热源，按压构件和第一加热停止装置。 定影带设置成能够围绕旋转轴线旋转。 加压构件被构造成可旋转并与定影带压力接触以形成定影辊隙。 热源布置在定影带的内径侧，设置在从旋转轴线偏离的位置，并构造成加热定影带。 按压构件被构造成将定影带按压到加压构件的一侧。 第一加热停止装置被配置为面对与定影带的热源最接近的部分的外周面，并且在第一工作温度下操作，以便使热源停止加热定影带。

公开(公告)号：US09335691B2

公开(公告)日：2016-05-10

申请号：US14721685

申请日：2015-05-26

Applicant: KYOCERA Document Solutions Inc.

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

IPC: G03G15/20

CPC classification number: G03G15/2064 ,  G03G15/2039 ,  G03G15/2053 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member and a temperature sensor. The fixing belt is arranged rotatably. The pressuring member is arranged rotatably and configured to come into pressure contact with the fixing belt so as to form a fixing nip. The pressing member is configured to press the fixing belt to the pressuring member side. The temperature sensor is inserted into the pressing member. The pressing member has a through hole penetrating from a face at the fixing nip side to an insertion part of the temperature sensor.

Abstract translation: 定影装置包括定影带，加压构件，按压构件和温度传感器。 定影带可旋转地布置。 加压构件可旋转地配置成与定影带压力接触，以形成定影夹持部。 按压构件被构造成将定影带按压到加压构件侧。 温度传感器插入按压部件。 按压部件具有从定影辊隙侧的面向温度传感器的插入部贯穿的贯通孔。

公开(公告)号：US09152085B2

公开(公告)日：2015-10-06

申请号：US13681668

申请日：2012-11-20

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Masaki Hayashi ,  Yoshihiro Yamagishi ,  Hiroshi Yamazaki ,  Koji Kuramashi ,  Eiji Nimura

IPC: G03G15/08

CPC classification number: G03G15/0889 ,  G03G15/0893

Abstract: A developing device includes a first agitating member and a second agitating member. Each of the first and second agitating members includes a screw having a helical portion formed helically so as to define a hollow portion, and a plurality of ribs formed on the helical portion in the longitudinal direction of the screw. On at least one of the first and second agitating members, there is disposed a paddle opposed to the communicating portion on a downstream side in a transport direction of the developing powder. The paddle has a flat surface in a direction perpendicular to the longitudinal direction, and a width of a distal end of the paddle is smaller than a width of a proximal end of the paddle disposed to the agitating member in a plan view.

Abstract translation: 显影装置包括第一搅拌构件和第二搅拌构件。 第一和第二搅拌构件中的每一个包括具有螺旋形状以形成中空部分的螺旋部分的螺钉和形成在螺钉的纵向方向上的螺旋部分上的多个肋。 在第一和第二搅拌构件中的至少一个上，在显影粉末的输送方向的下游侧设置有与连通部相对的桨叶。 桨叶在垂直于纵向方向的方向上具有平坦的表面，并且桨的远端的宽度小于在平面图中设置到搅拌构件的桨的近端的宽度。

公开(公告)号：US09104136B2

公开(公告)日：2015-08-11

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 ,  G03G15/09

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：US20150050041A1

公开(公告)日：2015-02-19

申请号：US14454362

申请日：2014-08-07

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yoshihiro Yamagishi

IPC: G03G15/09 ,  G03G15/08

CPC classification number: G03G15/0942 ,  G03G15/0812 ,  G03G15/0817

Abstract: A developing device includes a developing roller, a regulating blade, seal members, and contact members. The regulating blade extends in a rotation axis direction of the developing sleeve, is disposed opposite to a circumferential surface of the developing sleeve, and regulates a quantity of the toner on the circumferential surface of the developing sleeve. The seal members are disposed opposite to the circumferential surface without being in contact with both ends of the developing region in the rotation axis direction. Each contact member is an edge on the developing region side in the rotation axis direction, provided at a position at an upstream side in a rotational direction of the circumferential surface of the developing sleeve relative to an arrangement position of the regulating blade, and configured to be in contact with the circumferential surface of the developing sleeve.

Abstract translation: 显影装置包括显影辊，调节片，密封件和接触件。 调节叶片在显影套筒的旋转轴线方向上延伸，与显影套筒的圆周表面相对设置，并且调节显影套筒的圆周表面上的调色剂的量。 密封构件与周向表面相对设置，而不与显影区域的旋转轴线方向的两端接触。 每个接触构件是相对于调节叶片的布置位置设置在显影套筒的圆周表面的旋转方向的上游侧的位置处的旋转轴线方向上的显影区域侧的边缘，并且被配置为 与显影套筒的圆周表面接触。

公开(公告)号：US20130315629A1

公开(公告)日：2013-11-28

申请号：US13899619

申请日：2013-05-22

Applicant: KYOCERA Document Solutions Inc.

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

IPC: G03G15/08

CPC classification number: G03G15/0891 ,  G03G15/0893 ,  G03G2215/0833 ,  G03G2215/0838

Abstract: A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between a pair of wall portions. The conveying member includes a spiral member, an inner wall portion and shaft portions. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The inner wall portion includes a plurality of planar portions which define the hollow interior of the spiral member and are connected at predetermined angles in a circumferential direction of the rotation of the conveying member. The shaft portions are arranged at opposite end parts of the spiral member, rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member.

Abstract translation: 显影剂输送装置包括壳体，显影剂输送路径和输送构件。 显影剂输送路径在一对壁部之间延伸。 输送构件包括螺旋构件，内壁部和轴部。 螺旋构件通过在显影剂的输送方向上连接螺旋片而形成，每个螺旋片形成一个螺旋形转动，并且包括由连接的螺旋片形成的中空内部。 内壁部包括限定螺旋构件的中空内部的多个平面部分，并且在传送构件的旋转的圆周方向上以预定角度连接。 轴部配置在螺旋构件的相对端部，可旋转地支撑在壁部上，并用作用于输送构件旋转的旋转轴。