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公开(公告)号：US20150316889A1
公开(公告)日：2015-11-05
申请号：US14683818
申请日：2015-04-10
Applicant: Konica Minolta, Inc.
Inventor： Satoshi UCHINO , Kosuke NAKAMURA , Futoshi KADONOME , Koji SHIBATA
CPC classification number: G03G21/0094 , G03G9/08724 , G03G9/08755 , G03G9/08773 , G03G9/09716 , G03G9/09725
Abstract: A process of forming an image includes the steps of: developing an electrostatic latent image with a toner, the latent image being formed through charge of the surface of an electrostatic latent image carrier and exposure of the surface to light; and applying a lubricant onto the surface of the electrostatic latent image carrier. The toner includes a toner matrix particle and an external additive nanoparticle. The external additive nanoparticle comprises a silica-polymer composite nanoparticle. A percentage of atomic silicon present on the surface of the silica-polymer composite nanoparticle satisfies Condition A expressed by Expression: 15.0 atm %≦percentage of atomic silicon ({Si/(C+O+Si)}×100)≦30.0 atm %. The percentage of atomic silicon is determined from total amounts of atomic carbon, oxygen, and silicon present on the topmost surface of the silica-polymer composite nanoparticle and within 3 nm inwards from the topmost surface.
Abstract translation: 形成图像的过程包括以下步骤：用调色剂显影静电潜像，通过电荷静电潜像载体的表面形成潜像并将表面暴露于光; 以及将润滑剂涂敷在静电潜像载体的表面上。 调色剂包括调色剂基质颗粒和外部添加剂纳米颗粒。 外部添加剂纳米颗粒包含二氧化硅 - 聚合物复合纳米颗粒。 存在于二氧化硅 - 聚合物复合纳米颗粒表面上的原子硅的百分比满足由表达式：15.0atm％＆nlE表示的条件A;原子硅百分比（{Si /（C + O + Si）}×100）＆nlE; 30.0 atm％。 原子硅的百分比由二氧化硅 - 聚合物复合纳米颗粒的最上表面上存在的原子碳，氧和硅的总量确定，并且从最上表面开始在3nm以内。
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2.发明申请公开(公告)号：US20140349228A1
公开(公告)日：2014-11-27
申请号：US14284842
申请日：2014-05-22
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Yukio HOSOYA , Kazue NAKAMURA , Saburou HIRAOKA , Yasuko UCHINO
CPC classification number: G03G9/0819 , G03G9/0802 , G03G9/09708 , G03G9/09791 , G03G13/00 , G03G13/06
Abstract: A toner for electrostatic latent image development of the present invention includes toner particles containing toner mother particles and an external additive. The external additive contains fatty acid metal salt particles, and a volume based particle diameter (size) distribution of the fatty acid metal salt particles has two peaks on a side of smaller size and a side of larger size, respectively. A volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of smaller size is 3.0 μm or smaller and a volume based mean particle diameter of the fatty acid metal salt particles having the peak on the side of larger size is larger than a volume based mean particle diameter of the toner mother particles.
Abstract translation: 本发明的静电潜像显影用调色剂包括含有调色剂母粒和外用添加剂的调色剂颗粒。 外部添加剂含有脂肪酸金属盐颗粒，脂肪酸金属盐颗粒的体积基础粒径（粒径）分布在较小尺寸和较大尺寸侧具有两个峰。 具有较小尺寸侧面的峰的脂肪酸金属盐粒子的体积平均粒径为3.0μm以下，脂肪酸金属盐粒子的体积平均粒径在较大尺寸侧具有峰值 大于调色剂母粒子的基于体积的平均粒径。
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公开(公告)号：US20170090324A1
公开(公告)日：2017-03-30
申请号：US15267808
申请日：2016-09-16
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Satoshi UCHINO , Shinya OBARA , Noriyuki KIMPARA , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/09783 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/0918 , G03G9/09716 , G03G9/09725 , G03G9/113 , G03G9/1133
Abstract: Provided is an electrostatic image developing toner including a toner mother particle containing a colorant and a binder resin comprising a crystalline resin and an amorphous resin; and an external additive. The external additive includes an inorganic fine particle having a number average major axis in a range of 50 to 100 nm, an average aspect ratio in a range of 3 to 10, and a volume resistivity in a range of 1×1010 to 1×1012 Ω·cm in primary particles.
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公开(公告)号：US20190384201A1
公开(公告)日：2019-12-19
申请号：US16399408
申请日：2019-04-30
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Keiji ARAI , Junichi FURUKAWA , Ikuko SAKURADA
Abstract: Provided is an electrostatic charge image developer containing toner particles and carrier particles, wherein the toner particles contain at least silica particles or alumina particles as an external additive; the carrier particles contain core material particles and a coating resin layer covering a surface of the core particles; the coating resin layer contains metal oxide particles; an element measured by XPS (photoelectron spectroscopy) of the carrier particle is at least Si or Al; and a content of Si or Al in the carrier particle is in the range of 1 to 6 at % with respect to the total elements constituting the carrier particles.
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公开(公告)号：US20170307991A1
公开(公告)日：2017-10-26
申请号：US15471648
申请日：2017-03-28
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Satoshi Uchino , Kosuke Nakamura , Koji Shibata
CPC classification number: G03G9/08755 , G03G9/0819 , G03G9/08711 , G03G9/08791 , G03G9/08795 , G03G9/09791 , G03G9/113
Abstract: A toner for developing an electrostatic latent image includes: toner base particles containing a hybrid crystalline polyester resin having a crystalline polyester polymerized segment and an amorphous polymerized segment chemically bonded to each other and an amorphous resin; and an external additive including fatty acid metal salt particles, wherein a volume median diameter of the fatty acid metal salt particles is from 3.0 to 5.0 μm.
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Patent Agency Ranking
公开(公告)号：US20170123332A1
公开(公告)日：2017-05-04
申请号：US15274304
申请日：2016-09-23
Applicant: Konica Minolta, Inc.
Inventor： Satoshi UCHINO , Shinya OBARA , Futoshi KADONOME , Noriyuki KIMPARA , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/0827 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0918 , G03G9/09716 , G03G9/09725 , G03G9/09791
Abstract: The toner of the present invention contains: a toner base particle, and a silica particle and a fatty acid metal salt particle adhering to a surface of the toner base particle. The toner base particle contains a crystalline polyester resin and an amorphous polyester resin. The toner particle has an average circularity of 0.945 to 0.965. The silica particle has a volume average particle size of 70 to 300 nm, and has an average circularity of 0.5 to 0.9. The fatty acid metal salt particle has a median diameter based on a volume of 0.50 to 2.00 μm.
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公开(公告)号：US20180364602A1
公开(公告)日：2018-12-20
申请号：US15976151
申请日：2018-05-10
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Keiji ARAI , Junichi FURUKAWA
CPC classification number: G03G9/1138 , G03G9/0819 , G03G9/0825 , G03G9/08711 , G03G9/08728 , G03G9/08755 , G03G9/08797 , G03G9/1139
Abstract: The present invention provides a two-component developer for developing an electrostatic charge image, which includes a toner and a carrier, wherein the toner contains an amorphous resin and a crystalline resin as binder resins and an inorganic particle as external additive particle, and the carrier has a surface to which silica particles having a number average particle diameter of 10 to 30 nm are attached in an amount in the range of the following Equation (1): 5 at %≤S1≤10 at %, wherein S1 represents a concentration of Si element as measured by XPS and indicates an amount of silica on the surface of the carrier.
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公开(公告)号：US20180267416A1
公开(公告)日：2018-09-20
申请号：US15916896
申请日：2018-03-09
Applicant: Konica Minolta, Inc.
Inventor： Satoshi UCHINO , Shinya OBARA , Futoshi KADONOME
CPC classification number: G03G9/0825 , C01F17/0012 , C01G23/003 , C01G23/006 , C01P2004/32 , C01P2004/64 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/09321 , G03G9/09708
Abstract: A toner for developing electrostatic images, including toner particles containing an external additive on surfaces of toner matrix particles. The external additive contains at least a lanthanum-containing titanate compound.
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9.发明申请公开(公告)号：US20170329248A1
公开(公告)日：2017-11-16
申请号：US15581775
申请日：2017-04-28
Applicant: Konica Minolta, Inc.
Inventor： Kosuke NAKAMURA , Satoshi UCHINO , Futoshi KADONOME , Koji SHIBATA
CPC classification number: G03G9/1133 , G03G9/08755 , G03G9/08797 , G03G9/1075 , G03G9/1131 , G03G9/1139
Abstract: Provided is a carrier for electrostatic charge image development which provides a two-component developer having a high electric charge amount, a suppressed variation in an electric charge amount caused by an environmental change, and excellent durability, even if a low temperature fixable toner is used.A carrier for electrostatic charge image development of the present invention includes: carrier particles in which a core particle surface is coated with a coating material containing a resin, wherein the coating material contains phosphorus element, and the resin contains structural units derived from an alicyclic (meth)acrylic acid ester compound.
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公开(公告)号：US20170123334A1
公开(公告)日：2017-05-04
申请号：US15282177
申请日：2016-09-30
Applicant: Konica Minolta, Inc.
Inventor： Noriyuki KIMPARA , Satoshi UCHINO , Shinya OBARA , Futoshi KADONOME , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/08755 , G03G9/0819 , G03G9/08788 , G03G9/08797 , G03G9/09791
Abstract: An electrostatic latent image developing toner of the present invention includes toner base particles and particles containing a fatty acid metal salt. The toner base particles contain a crystalline resin containing a segment of a first resin and a segment of a second resin chemically bonded to each other and an amorphous resin containing at least the second resin. The crystalline resin is a hybrid crystalline polyester resin. The first resin is a crystalline polyester resin. The second resin is an amorphous resin. The volume-based median diameter (Da) of the toner base particles and the volume-based median diameter (Db) of the particles containing the fatty acid metal salt satisfy the relations represented by Expressions (1) and (2) below: 0.5 μm≦Db≦2.0 μm Expression (1) 0.1 Db/Da≦0.5. Expression (2)
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