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公开(公告)号：US10310400B2
公开(公告)日：2019-06-04
申请号：US14719988
申请日：2015-05-22
Applicant: Konica Minolta, Inc.
Inventor： Chiaki Yamada , Masahiro Anno
Abstract: A developer for electrostatic latent image contains toner particles. The toner particles contain a resin and a coloring agent, and the coloring agent includes a first coloring agent, a second coloring agent, and a third coloring agent. The first coloring agent is carbon black, the second coloring agent is one or more of C. I. Pigment Violet 19 and C. I. Pigment Violet 23, and the third coloring agent is one or more of C. I. Pigment Brown 23 and C. I. Pigment Brown 25. A content of the second coloring agent is not lower than 8 mass % and not higher than 25 mass % with respect to a total amount of the coloring agents.
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公开(公告)号：US09389530B2
公开(公告)日：2016-07-12
申请号：US14561361
申请日：2014-12-05
Applicant: KONICA MINOLTA, INC.
Inventor： Chiaki Yamada , Mikihiko Sukeno , Yuya Iwagoe , Masaaki Oka
Abstract: A liquid developer includes an insulating liquid and toner particles which are dispersed in the insulating liquid and contain a resin and a coloring agent. The resin contains a first resin which is a crystalline urethane-modified polyester resin resulting from increase in chain length of a component derived from a polyester resin by a compound containing an isocyanate group. The toner particles have a peak in a DSC curve in temperature increase at 55° C. or higher, have a peak in the DSC curve in temperature decrease at 30° C. or higher, and have a storage elastic modulus at 80° C., not lower than 1×105 Pa and not higher than 1×107 Pa.
Abstract translation: 液体显影剂包括分散在绝缘液体中并含有树脂和着色剂的绝缘液体和调色剂颗粒。 该树脂含有第一种树脂，它是由含有异氰酸酯基团的化合物由聚酯树脂衍生的成分的链长增加而得到的结晶聚氨酯改性聚酯树脂。 调色剂颗粒在55℃或更高温度升高时在DSC曲线中具有峰值，在30℃或更高温度下的DSC曲线中具有峰值，并且在80℃具有储能弹性模量。 不低于1×105Pa且不高于1×107Pa。
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公开(公告)号：US09023571B2
公开(公告)日：2015-05-05
申请号：US14036854
申请日：2013-09-25
Applicant: Konica Minolta, Inc.
Inventor： Chiaki Yamada , Masahiro Anno , Yukiko Uno , Satoshi Matsumoto
Abstract: A liquid developer of the present invention includes a toner particle and an insulating liquid, the toner particle including a resin and a pigment, the resin including a polyester resin, the pigment including a first pigment, a second pigment, and a third pigment, the first pigment being a carbon black, 10 to 25 mass % of the first pigment being included in the toner particle, the second pigment being nigrosine, 3 to 15 mass % of the second pigment being included in the toner particle, the third pigment being at least one organic pigment selected from a group consisting of a phthalocyanine blue pigment, a phthalocyanine green pigment, a carmine-based pigment, a naphthol-based pigment, a quinacridon-based pigment, an azo-based pigment, a benzimidazolone-based pigment, and an isoindoline-based pigment, 5 to 20 mass % of the third pigment being included in the toner particle.
Abstract translation: 本发明的液体显影剂包括调色剂颗粒和绝缘液体，所述调色剂颗粒包括树脂和颜料，所述树脂包括聚酯树脂，所述颜料包括第一颜料，第二颜料和第三颜料， 第一颜料为炭黑，调色剂颗粒中包含10〜25质量％的第一颜料，第二颜料为苯胺黑，第三颜料中含有3〜15质量％的第二颜料，第三颜料为 选自酞菁蓝颜料，酞菁绿颜料，胭脂红系颜料，萘酚系颜料，喹吖啶酮系颜料，偶氮系颜料，苯并咪唑酮系颜料， 和异二氢吲哚系颜料，调色剂颗粒中含有5〜20质量％的第三颜料。
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公开(公告)号：US09581925B2
公开(公告)日：2017-02-28
申请号：US14035147
申请日：2013-09-24
Applicant: Konica Minolta, Inc.
Inventor： Yukiko Uno , Satoshi Matsumoto , Naoki Yoshie , Chiaki Yamada
IPC: G03G9/13
Abstract: Toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. Heat of fusion with differential scanning calorimetry of the second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, H1 and H2 represent heats of fusion (J/g) at initial temperature increase and second temperature increase with differential scanning calorimetry of the second resin, respectively. 5≦H1≦70 Equation (1) 0.2≦H2/H1≦1.0 Equation (2)
Abstract translation: 调色剂颗粒具有核 - 壳结构，其中包含第一树脂的第一树脂颗粒附着到或覆盖包含第二树脂的第二树脂颗粒的表面。 第二树脂的差示扫描量热法的熔化热满足下述（1）〜（2）。 在下面的等式（1）至（2）中，H1和H2分别表示初始温度升高时的熔化热（J / g）和第二树脂的差示扫描量热法的第二温度升高。 5＆nlE; H1＆nlE; 70等式（1）0.2＆nlE; H2 / H1＆nlE; 1.0等式（2）
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公开(公告)号：US09164407B2
公开(公告)日：2015-10-20
申请号：US14270545
申请日：2014-05-06
Applicant: KONICA MINOLTA, INC.
Inventor： Chiaki Yamada , Masahiro Anno , Mikihiko Sukeno
CPC classification number: G03G9/08 , G03G9/0874 , G03G9/08791 , G03G9/09 , G03G9/0926 , G03G9/09733
Abstract: An electrostatic latent image developer of the present invention includes a resin, a colorant and a colorant dispersant, wherein the colorant dispersant contains a first polymer compound containing a constitutional unit derived from a monomer A, a constitutional unit derived from a monomer B and a constitutional unit derived from a monomer C, the monomer A is 4-vinylpyridine, the monomer B is CH2═CR1—COOR2 (where R1 represents hydrogen or a methyl group; and R2 represents an alkyl group having 1 to 10 carbon atoms), and the monomer C is CH2═CR3—COOR4 (where R3 represents hydrogen or a methyl group; R4 represents (CH2CH2O)nCH3 or (CH2CH2O)nCH2CH3; and n represents an integer of 12 to 18).
Abstract translation: 本发明的静电潜像显影剂包括树脂，着色剂和着色剂分散剂，其中着色剂分散剂包含含有源自单体A的结构单元的第一高分子化合物，衍生自单体B的结构单元和结构式 来自单体C的单元，单体A是4-乙烯基吡啶，单体B是CH 2 = CR 1 -COOR 2（其中R 1表示氢或甲基;且R 2表示具有1至10个碳原子的烷基），并且 单体C是CH 2 = CR 3 -COOR 4（其中R 3表示氢或甲基; R 4表示（CH 2 CH 2 O）n CH 3或（CH 2 CH 2 O）n CH 2 CH 3; n表示12至18的整数）。
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Patent Agency Ranking
公开(公告)号：US20140087304A1
公开(公告)日：2014-03-27
申请号：US14035147
申请日：2013-09-24
Applicant: Konica Minolta, Inc.
Inventor： Yukiko Uno , Satoshi Matsumoto , Naoki Yoshie , Chiaki Yamada
IPC: G03G9/13
Abstract: Toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. Heat of fusion with differential scanning calorimetry of the second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, H1 and H2 represent heats of fusion (J/g) at initial temperature increase and second temperature increase with differential scanning calorimetry of the second resin, respectively. 5≦H1≦70 Equation (1) 0.2≦H2/H1≦1.0 Equation (2)
Abstract translation: 调色剂颗粒具有核 - 壳结构，其中包含第一树脂的第一树脂颗粒附着到或覆盖包含第二树脂的第二树脂颗粒的表面。 第二树脂的差示扫描量热法的熔化热满足下述（1）〜（2）。 在下面的等式（1）至（2）中，H1和H2分别表示初始温度升高时的熔化热（J / g）和第二树脂的差示扫描量热法的第二温度升高。 5＆nlE; H1＆nlE; 70等式（1）0.2＆nlE; H2 / H1＆nlE; 1.0等式（2）
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公开(公告)号：US10558159B2
公开(公告)日：2020-02-11
申请号：US16207608
申请日：2018-12-03
Applicant: Konica Minolta Inc.
Inventor： Naoki Yoshie , Chiaki Yamada
Abstract: An image forming device includes: a fixing unit that fixes an image formed on a recording medium; a heating unit that heats a recording medium that has been subjected to a fixing process by the fixing unit; and a controller that sets a glossiness of an image on a recording medium, wherein the controller controls a heating amount with the heating unit depending on the set glossiness.
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公开(公告)号：US10175620B2
公开(公告)日：2019-01-08
申请号：US15655185
申请日：2017-07-20
Applicant: Konica Minolta, Inc.
Inventor： Chiaki Yamada , Junya Hirayama
IPC: G03G15/20
Abstract: In this fixing device, a pressing roller includes a pressing roller driving unit, and a heating roller includes a heating roller driving unit. Control is performed such that torque of the heating roller in torque distribution between the pressing roller and the heating roller is greater when a belt load reducing device is activated than when the belt load reducing device is not activated. A fixing device and an image forming apparatus thus can be provided, in which the fixability according to the kind of recording medium is excellent, the durability of the fixing belt is high, and the separability between the fixing belt and the recording medium is excellent.
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公开(公告)号：US09429890B2
公开(公告)日：2016-08-30
申请号：US15001601
申请日：2016-01-20
Applicant: Konica Minolta, Inc.
Inventor： Chiaki Yamada , Junya Hirayama , Hirofumi Nakagawa
IPC: G03G15/20
CPC classification number: G03G15/2064 , G03G15/2021 , G03G15/2039 , G03G15/2046
Abstract: There is provided a fixing device for fixing a toner image formed on a surface of a recording medium by toner, wherein the toner includes a releasing agent and satisfies Ta
Abstract translation: 提供了一种用于通过调色剂固定形成在记录介质表面上的调色剂图像的定影装置，其中调色剂包括脱模剂并满足Ta
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公开(公告)号：US09395641B2
公开(公告)日：2016-07-19
申请号：US14561394
申请日：2014-12-05
Applicant: KONICA MINOLTA, INC.
Inventor： Chiaki Yamada , Masahiro Anno , Yuya Iwagoe , Masaaki Oka
Abstract: A liquid developer includes an insulating liquid and toner particles which are dispersed in the insulating liquid and contain a resin and a coloring agent. The resin contains a first resin which is a resin containing a component derived from a crystalline polyester resin. The coloring agent contains carbon black and nigrosine. The toner particles have a peak at not lower than 30° C. and not higher than 50° C. in a DSC curve in temperature decrease.
Abstract translation: 液体显影剂包括分散在绝缘液体中并含有树脂和着色剂的绝缘液体和调色剂颗粒。 树脂含有第一树脂，其是含有衍生自结晶性聚酯树脂的成分的树脂。 着色剂含有炭黑和苯胺黑。 调色剂颗粒在温度降低的DSC曲线中具有不低于30℃且不高于50℃的峰。
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