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公开(公告)号：US20150177652A1
公开(公告)日：2015-06-25
申请号：US14570989
申请日：2014-12-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Shizuka Okada , Yuji Kamiyama , Sakae Saito , Yasuhiro Oishi , Masashi Fujishima , Chikara Ishihara
IPC: G03G15/09
CPC classification number: G03G15/0921 , G03G15/0818 , G03G15/0928 , G03G2215/0132
Abstract: Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×105Ω to 1.0×106Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.
Abstract translation: 显影装置包括显影辊和磁辊。 显影辊包括氧化铝薄膜和树脂涂层。 磁辊设置成与显影辊的外周面无接触地包围，并且包括形成在由包括铝的金属制成的基体的外周面上的氧化铝薄膜。 磁性辊通过由调色剂和磁性载体组成的磁刷在显影辊的表面上形成调色剂层。 交流阻抗Z1在1.0×105＆OHgr范围内; 至1.0×106＆OHgr; 并且树脂涂层的表面粗糙度Ra在0.057μm至0.280μm的范围内，当在磁性辊的基体和显影辊的基体之间施加预定频率的AC电压时获得的AC阻抗Z1是在磁性 刷子形成在磁辊上。
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62.发明授权Developer case that suppresses clogging due to developer, developer replenishment unit having the same, and image forming apparatus having the same 有权抑制由显影剂堵塞的显影剂盒，具有该阻挡剂的显影剂补充单元，以及具有该堵塞的图像形成装置公开(公告)号：US08989634B2
公开(公告)日：2015-03-24
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。
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公开(公告)号：US20140205324A1
公开(公告)日：2014-07-24
申请号：US14154963
申请日：2014-01-14
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takefumi Yotsutsuji , Akifumi Yamaguchi , Takahisa Nakaue , Tamotsu Shimizu , Minoru Wada , Shizuka Okada
IPC: G03G15/08
CPC classification number: G03G15/0893 , G03G15/0822
Abstract: A developing device includes a housing containing a developer, a developer carrier, a developer conveying path, a developer conveying member, and a plurality of paddle members. The developer conveying path includes a first conveying path and a second conveying path. The developer conveying member is disposed in the second conveying path and includes a rotating shaft and spiral blades formed around the rotating shaft. The developer conveying member is rotationally driven to convey the developer in the second direction and feeds the developer to the developer carrier. The plurality of paddle members project in a radial direction from the rotating shaft of the developer conveying member at one circumferential position on the rotating shaft. The plurality of paddle members is contiguously arranged in the axial direction of the rotating shaft to connect the spiral blades adjacent to each other in the axial direction.
Abstract translation: 显影装置包括容纳显影剂，显影剂载体，显影剂输送路径，显影剂输送构件和多个桨状构件的壳体。 显影剂输送路径包括第一输送路径和第二输送路径。 显影剂输送构件设置在第二输送路径中，并且包括旋转轴和围绕旋转轴形成的螺旋叶片。 旋转地驱动显影剂输送构件以沿第二方向输送显影剂，并将显影剂供给显影剂载体。 多个叶片构件在旋转轴的一个圆周位置处从显影剂传送构件的旋转轴在径向方向上突出。 多个叶片构件沿着旋转轴的轴向连续地布置，以沿着轴向彼此相邻地连接螺旋叶片。
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公开(公告)号：US12092993B2
公开(公告)日：2024-09-17
申请号：US18332440
申请日：2023-06-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kenichi Tamaki , Hiroshi Yamazaki , Junichi Nakagawa , Takuji Watanabe , Tamotsu Shimizu
CPC classification number: G03G21/206 , G03G15/0848 , G03G15/0898 , G03G15/0921
Abstract: Provided is an image forming apparatus in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered. A fixed magnet of the developer carrying member has a first pole that is arranged to face the filter, and a second pole and a third pole on a downstream side relative to the first pole. The first pole and the second pole have polarities opposite to each other, and the second pole and the third pole have a same polarity. A length of a gap between the developing container and an area where the developing sleeve faces the second pole among areas of the developing sleeve is smaller than a length between the developing sleeve and the filter.
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公开(公告)号：US11982965B2
公开(公告)日：2024-05-14
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
CPC classification number: G03G15/553 , G03G15/0266 , G03G15/5037
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.
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Patent Agency Ranking
公开(公告)号：US11977350B2
公开(公告)日：2024-05-07
申请号：US18331671
申请日：2023-06-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Junichi Nakagawa , Tamotsu Shimizu , Hiroshi Yamazaki , Kenichi Tamaki , Takuji Watanabe
CPC classification number: G03G21/206 , G03G15/0266 , G03G15/065 , G03G15/09 , G03G15/5008 , G03G21/0047 , G03G21/0052 , G03G21/10 , G03G21/105 , G03G21/1814 , G03G2215/00025 , G03G2221/1645
Abstract: An image forming apparatus includes an image carrier, a cleaning unit, a development device, and a control unit. The development device includes a toner collection mechanism having a developer carrier and a filter. The control unit is capable of executing a scattered toner recovery mode at non-image forming time, in which the filter is vibrated, a potential difference is generated in the direction for the toner to move from the developer carrier to the image carrier, the developer carrier is rotated in a reverse direction to that at image forming time, and the image carrier is rotated in the same direction as that at the image forming time, so that scattered toner, which has dropped from the filter and adhered to the developer carrier, is recovered by the cleaning unit via the image carrier.
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67.发明授权公开(公告)号：US11592760B2
公开(公告)日：2023-02-28
申请号：US17507024
申请日：2021-10-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Yoshihiro Yamagishi , Tamotsu Shimizu
Abstract: An image forming apparatus includes a developing device that forms a toner image, by developing an electrostatic latent image formed on a photoconductor drum, a charging device that electrically charges the photoconductor drum, a developing power source that applies a predetermined developing bias voltage to the developing device, and a calculation device that calculates a surface potential of the photoconductor drum, on a basis of the developing current flowing in the developing device. The developing power source applies the developing bias voltage in a plurality of levels, to the developing device. A current measurement device measures a developing current, with respect to the developing bias voltage of each level. The calculation device calculates the surface potential, on the basis of each developing current.
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公开(公告)号：US11307512B2
公开(公告)日：2022-04-19
申请号：US17165370
申请日：2021-02-02
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Kanako Morimoto , Tamotsu Shimizu , Kenichi Tamaki
Abstract: An image forming apparatus includes a toner charge amount predictor, a toner developing resistance calculator, and a determiner. The toner developing resistance calculator calculates a toner developing resistance on the basis of a bias voltage applied to a developing device and a measured developing current by dividing a value of the bias voltage by a value of the developing current when a developing device develops an electrostatic latent image formed on the surface of an image carrier to form a toner image. The toner charge amount predictor predicts a toner charge amount of a toner which is supplied to the image carrier by the developing device on the basis of a density of the toner image and the developing current. The determiner determines a state of the developing device on the basis of the toner charge amount and the toner developing resistance.
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公开(公告)号：US11249415B2
公开(公告)日：2022-02-15
申请号：US17098405
申请日：2020-11-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Takahiro Okubo , Yohei Wakasa , Kazuhiro Nakachi
Abstract: Provided is an image forming apparatus having a simple configuration capable of measuring a toner current included in a developing current and accurately calculating a toner charge amount based on the measurement result. The developing device has a developer carrier that carries a two-component developer including a magnetic carrier and toner. The density detecting device detects the density of the toner image. The current detecting unit detects a DC component of a developing current that flows when a developing voltage is applied to the developer carrier. The control unit, in a state in which the image carrier is rotated at two or more different linear speeds during non-image formation, forms the same reference image on the image carrier by the developing device, and estimates the toner charge amount based on the developing current when the reference image is formed and the density of the reference image.
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公开(公告)号：US11163243B2
公开(公告)日：2021-11-02
申请号：US17206261
申请日：2021-03-19
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Norio Kubo , Asami Sasaki , Yasuhiro Tauchi , Yuji Toyota
IPC: G03G15/06
Abstract: A bias condition determiner executes, in order, a first direct current voltage determination mode (first DC calibration) for determining a provisional reference direct current voltage that is a provisional reference for a direct current voltage of a developing bias applied to a developing roller, an inter-peak voltage determination mode (AC calibration) for determining a reference inter-peak voltage that is a reference for an inter-peak voltage of an alternating current voltage of the developing bias applied to the developing roller in an image forming operation, and a second direct current voltage determination mode (second DC calibration) for determining a reference direct current voltage that is a reference for the direct current voltage of the developing bias applied to the developing roller in the image forming operation.
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