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公开(公告)号：US10481522B2
公开(公告)日：2019-11-19
申请号：US16240896
申请日：2019-01-07
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Yasuhiro Tauchi , Akifumi Yamaguchi
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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12.发明授权公开(公告)号：US09541861B2
公开(公告)日：2017-01-10
申请号：US15098229
申请日：2016-04-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yasuhiro Tauchi , Yukari Ota
CPC classification number: G03G15/0877 , G03G15/065 , G03G15/0808 , G03G15/0812
Abstract: A developing device includes a toner carrying member, a developer carrying member, a layer thickness restricting portion, a rotation control portion, and a developer carrying member difference voltage control portion. The rotation control portion, when developing is not performed, causes the developer carrying member to rotate forwardly and then to rotate reversely. The developer carrying member difference voltage control portion, in the non-developing forward rotation state, sets a voltage of the developer carrying member that is based on a potential of the toner carrying member, to a voltage that is smaller than a first reference voltage that is set when the developing is performed. The non-developing forward rotation state is a state in which the developer carrying member rotates forwardly when the developing is not performed.
Abstract translation: 显影装置包括调色剂承载构件，显影剂承载构件，层厚度限制部分，旋转控制部分和显影剂承载构件差异电压控制部分。 旋转控制部在不进行显影时，使显影剂承载构件向前旋转，然后反转。 显影剂承载构件差动电压控制部分处于非显影正向旋转状态，将基于调色剂承载构件的电位的显影剂承载构件的电压设定为小于第一参考电压的电压， 在显影时进行设定。 非显影正向旋转状态是当不进行显影时，显影剂承载构件向前旋转的状态。
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13.发明授权公开(公告)号：US09429869B1
公开(公告)日：2016-08-30
申请号：US15046370
申请日：2016-02-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yasuhiro Tauchi
CPC classification number: G03G15/0812 , G03G15/0808 , G03G15/09
Abstract: In a developing device, a sheet member is provided via a gap at a second specific position in a specific region between a position on a downstream side in a first rotation direction relative to a first specific position, and a high-magnetic-force position at which an intensity of a magnetic force is the highest in a second region, on the outer circumferential surface of a developer carrying body. The sheet member limits a layer thickness of a two-component developer carried on the developer carrying body rotating in a second rotation direction. The sheet member is able to elastically deform in accordance with application of a pressing force equal to or greater than a tolerable value in the first rotation direction or the second rotation direction.
Abstract translation: 在显影装置中，片状部件经由位于第一特定位置的第二特定位置处的第二特定位置处的第一特定位置处的第一特定位置处的高磁位置， 其在显影剂承载体的外周表面上的第二区域中的磁力的强度最高。 片材部件限制承载在沿第二旋转方向旋转的显影剂承载体上的双组分显影剂的层厚度。 片材能够根据在第一旋转方向或第二旋转方向上施加等于或大于容许值的按压力而弹性变形。
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14.发明授权公开(公告)号：US09158227B1
公开(公告)日：2015-10-13
申请号：US14687064
申请日：2015-04-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yukimasa Watanabe , Sakae Saito , Hiroaki Sakai , Yasuhiro Oishi , Masashi Fujishima , Chikara Ishihara , Yasuhiro Tauchi
CPC classification number: G03G15/09 , G03G15/0818
Abstract: The present disclosure relates to a developing roller having a conductive support base, a surface of which is covered with a resin layer, wherein the resin layer contains conductive fine particles and soluble nylon serving as a binder resin, and the resin layer surface has a surface roughness Ra of at least 0.4 μm, a waviness curve cycle of 50 to 400 μm, and a waviness curve height of 2 to 10 μm.
Abstract translation: 本发明涉及一种具有导电性支撑基体的显影辊，其表面被树脂层覆盖，其中树脂层含有导电性微粒和可溶性尼龙作为粘合剂树脂，树脂层表面具有表面 粗糙度Ra为0.4μm以上，波纹曲线周期为50〜400μm，波纹曲线高度为2〜10μm。
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公开(公告)号：US11874615B2
公开(公告)日：2024-01-16
申请号：US17859669
申请日：2022-07-07
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Akihiro Watanabe , Ryo Yamada , Uto Syu , Yuji Toyota , Yasuhiro Tauchi
CPC classification number: G03G15/0891 , G03G15/081 , G03G15/0921 , G03G2215/0609
Abstract: A developing device includes a developing container, a first stirring conveyance member, a second stirring conveyance member, a developer carrying member including a developing sleeve and a magnet, and a regulation member. The regulation pole in the magnet has a region extending over 10° or more in which a maximum value of a vertical magnetic force is not more than 65 [mT] and a vertical magnetic force gradient is not more than 0.3 [mT/°]. A peak position of the vertical magnetic force gradient of the regulation pole is arranged at a position opposed to the second stirring conveyance member, and when a value of the vertical magnetic force gradient and a value of the vertical magnetic force at the peak position of the vertical magnetic force gradient are indicated as A [mT/°] and K [mT], respectively, A≥2.8 and A×K≥62.5 are satisfied.
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Patent Agency Ranking
公开(公告)号：US11314183B2
公开(公告)日：2022-04-26
申请号：US17322298
申请日：2021-05-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masashi Fujishima , Norio Kubo , Asami Sasaki , Yasuhiro Tauchi , Tamotsu Shimizu , Akira Matayoshi , Masaki Kadota , Koji Suenami , Yuji Toyota
IPC: G03G15/08
Abstract: A developing device includes a developer container, a developer carrier, and first and second stirring/conveying members. The developer container includes a first partition wall partitioning between the two conveying chambers longitudinally, a first communication portion for passing developer from the first to the second conveying chamber, a second communication portion for passing developer from the second to the first conveying chamber, a developer supply port for supplying developer in, a developer discharge portion for discharging excessive developer, a second partition wall arranged, adjacent to the regulating portion, downstream of the second communication portion to partition between the first conveying chamber and the regulating portion, and a shield portion connected to the two partition walls to bridge between them to shield a top part of the second communication portion. A gap is formed between an upper end part of the shield portion and the inner surface of the developer container.
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公开(公告)号：US11209752B2
公开(公告)日：2021-12-28
申请号：US17322198
申请日：2021-05-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Asami Sasaki , Akira Matayoshi , Norio Kubo , Koji Suenami , Yuji Toyota , Tamotsu Shimizu , Masashi Fujishima , Yasuhiro Tauchi
IPC: G03G15/08
Abstract: A developing device includes a developer container, a developer carrier, and first and second members for stirring/conveying. The developer container includes a first partition wall between first and second chambers, a communication portion through which those chambers communicate at opposite ends of the first partition wall, a developer supply port, and a developer discharge portion. The first member stirs and conveys developer in the first chamber in a first direction. The second member stirs and conveys developer in the second chamber in a second direction and includes a regulating portion and a discharging blade. The developer container includes a second partition wall between the first chamber and the regulating portion. The gap from the upper end of the second partition wall to the inner surface of the developer container is larger than the gap thereto from the upper ends of a first helical blade and the regulating portion.
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公开(公告)号：US10146170B2
公开(公告)日：2018-12-04
申请号：US15727140
申请日：2017-10-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yasuhiro Tauchi
Abstract: An image forming apparatus includes an image carrier, an electrification device, an exposing device, developing device, and a control unit. The developing device includes a developing roller for supplying toner to the image carrier, a developing container for storing developer containing the toner, and a seal member for preventing leakage of the toner from a gap between the image carrier and the developing container. The control unit is capable of executing a seal member cleaning mode, in which it forms an electrostatic latent image pattern having exposed parts and unexposed parts whose boundaries exist at a predetermined or less interval over the entire area in a width direction of an image forming area of the image carrier when an image is not being formed, and drives the image carrier to rotate so that the electrostatic latent image pattern passes the seal member.
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19.发明申请公开(公告)号：US20180074435A1
公开(公告)日：2018-03-15
申请号：US15703949
申请日：2017-09-13
Applicant: Kyocera Document Solutions Inc.
Inventor： Yasuhiro Tauchi
IPC: G03G15/09
CPC classification number: G03G15/0812 , G03G15/0121 , G03G15/0808 , G03G15/0889 , G03G2215/0634
Abstract: A developing device includes a developing roller, a toner supply roller, a regulating blade, a casing, a toner-reception supporting member, a toner reception member, and a vibration generating unit. The toner-reception supporting member is opposed to the developing roller or the toner supply roller between the regulating blade and the image carrier. The toner reception member is located so as to make a downward slope toward the toner supply roller side from the image carrier side along a longitudinal direction of the toner-reception supporting member. The toner reception member has a toner receiving surface that receives the toner dropping from the developing roller. The vibration generating unit vibrates the toner reception member. The toner reception member includes a sheet-shaped toner crushing member attached to overlap approximately a whole region of the toner receiving surface in a longitudinal direction. The toner crushing member is swingably supported with respect to the toner receiving surface.
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公开(公告)号：US09864298B2
公开(公告)日：2018-01-09
申请号：US15480473
申请日：2017-04-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Yasuhiro Tauchi
CPC classification number: G03G15/0812 , G03G15/0889 , G03G15/0893 , G03G15/0921 , G03G15/0928
Abstract: A developing device includes a housing, a developing roller, a developer stirring member, and a layer thickness regulating member. The developing roller includes a stationary magnet and a sleeve. The stationary magnet includes a first magnetic pole having a specific polarity, and a second magnetic pole lying downstream of the first magnetic pole and having the same polarity as the first magnetic pole. In an entire inter-pole region between the first magnetic pole and the second magnetic pole, the stationary magnet produces a magnetic force including a horizontal component that keeps the specific polarity and has a value greater than zero (mT). The inter-pole region includes a flat area where a horizontal magnetic force component having a minimum absolute value exits and the horizontal magnetic force component changes within a range of 0.5 (mT) or less, the flat area extending over a range of 10 degrees or more.
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