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公开(公告)号：US20240353785A1
公开(公告)日：2024-10-24
申请号：US18625933
申请日：2024-04-03
Applicant: Konica Minolta, Inc.
Inventor： Koji SHIBATA , Michiaki ISHIKAWA
CPC classification number: G03G15/751 , G03G9/08755 , G03G15/09 , G03G2215/0604
Abstract: An image forming method uses a photoreceptor including at least an aluminum substrate, a toner for developing an electrostatic image including toner particles containing at least a binding resin, and a developer bearing member including a member that generates a magnetic flux inside, wherein the aluminum substrate contains silicon, a silicon content of the aluminum substrate is more than 0.6% by mass, and a glass transition point (Tg) of the toner for developing an electrostatic image is in a range of 0 to 45° C.
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公开(公告)号：US20240302769A1
公开(公告)日：2024-09-12
申请号：US18591850
申请日：2024-02-29
Applicant: Konica Minolta, Inc.
Inventor： Kazumi OURA , Hiroshi NAGASAWA , Masaharu MATSUBARA , Koji SHIBATA , Akihiko ITAMI , Makoto NOMIYA , Natsuki ITO
CPC classification number: G03G15/1605 , C04B35/47 , G03G9/0819 , G03G21/0005 , G03G2215/0861
Abstract: Disclosed is an image forming method including: developing, with an electrostatic charge image developing toner, a latent image formed on a photoreceptor in which a photosensitive layer is formed on a support containing aluminum as a main component; transferring a toner image on the photoreceptor onto a transfer target; and rubbing and removing the electrostatic charge image developing toner remaining on the photoreceptor after the transferring. The support contains silicon in a range of more than 0.6% by mass and 12.6% by mass or less, a shape factor of toner particles included in the electrostatic charge image developing toner is in a range of 0.800 to 0.970, and a content of the toner particles having a particle diameter of 2 μm or less is in a range of 5% by number to 30% by number.
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3.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：US20190354032A1
公开(公告)日：2019-11-21
申请号：US16404179
申请日：2019-05-06
Applicant: Konica Minolta, Inc.
Inventor： Shinya OBARA , Koji SHIBATA , Junya UEDA , Takuya TAKAHASHI , Satoshi UCHINO
Abstract: To provide a two-component developer for electrostatic charge image development, the two-component developer enabling a high image quality to be kept and enabling the occurrence of fogging to be suppressed even in continuous printing of an image high in coverage rate. The two-component developer for electrostatic charge image development includes a toner particle including a toner base particle and an external additive disposed on the surface of the toner base particle, and a carrier particle including a core material particle and a covering section disposed on the surface of the core material particle, wherein the external additive includes an alumina particle, and the percentage of exposed area of the core material particle is 4.0% or more and 15.0% or less.
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公开(公告)号：US20170139338A1
公开(公告)日：2017-05-18
申请号：US15283787
申请日：2016-10-03
Applicant: Konica Minolta, Inc.
Inventor： Kosuke NAKAMURA , Satoshi UCHINO , Koji SHIBATA
IPC: G03G9/113 , G03G9/08 , G03G9/09 , C09D133/12 , C09D133/10 , G03G9/093 , G03G9/087
CPC classification number: G03G9/1131 , C09D133/10 , C09D133/12 , G03G9/1133
Abstract: Provided is a method for producing a carrier for developing an electrostatic latent image, the carrier including carrier particles each including a core particle with a surface coated with a coating material including a resin, and the method including the steps of: a) obtaining first coating resin particles by polymerizing an alicyclic methacrylate monomer using, as a polymerization initiator, an azo compound having a nitrogen atom-containing substituent; b) obtaining second coating resin particles by polymerizing an alicyclic methacrylate monomer using a persulfate as a polymerization initiator; and c) forming carrier particles by coating surfaces of core particles with a coating material obtained by mixing at least the first and second coating resin particles.
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Patent Agency Ranking
公开(公告)号：US20150331345A1
公开(公告)日：2015-11-19
申请号：US14811051
申请日：2015-07-28
Applicant: Konica Minolta, Inc.
Inventor： Koji SHIBATA , Hiroaki OBATA , Natsuko FUJISAKI , Anju HORI , Kishio TAMURA
CPC classification number: G03G11/00 , G03G9/08728
Abstract: To provide a fixing solution and an image forming method in which faster fixing rate and faster drying rate can be achieved while the amount of fixing solution supplied is reduced and furthermore, a wet feeling in a formed image is reduced and an image having a high fixing strength can be formed.A fixing solution that softens a toner to fix a toner image constituted by the toner to an image support contains a hydroxyl group-containing ester compound expressed by general formula (1) below: R1—(CO)—O—R2 general formula (1): where R1 represents a linear or branched alkyl group having 6 to 11 carbon atoms, and R2 represents a linear or branched alkyl group having at least one hydroxyl group and 2 to 4 carbon atoms.
Abstract translation: 为了提供一种定影溶液和图像形成方法，其中可以减少定影液的供给量，同时减少定影液的量，同时可以实现更快的定影速度和更快的干燥速度，并且减少形成的图像的湿感和具有高定影性的图像 强度可以形成。 将调色剂软化以将由调色剂构成的调色剂图像固定在图像载体上的定影液含有下述通式（1）表示的含羟基的酯化合物：R1-（CO）-O-R2通式（1） ）：其中R1表示具有6至11个碳原子的直链或支链烷基，R2表示具有至少一个羟基和2至4个碳原子的直链或支链烷基。
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7.发明申请ELECTROSTATIC LATENT IMAGE DEVELOPING TONER AND ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD 有权静电图像显影调色剂和电子影像成像方法公开(公告)号：US20140363763A1
公开(公告)日：2014-12-11
申请号：US14293272
申请日：2014-06-02
Applicant: Konica Minolta, Inc.
Inventor： Koji SHIBATA , Kouji SUGAMA , Hiroshi NAGASAWA , Takaki KAWAMURA , Okushi OKUYAMA
IPC: G03G9/087
CPC classification number: G03G9/08724 , G03G9/0806 , G03G9/0825 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/09321 , G03G9/09371 , G03G9/09392
Abstract: Disclosed is an electrostatic latent image developing toner which contains a toner host particle having a domain-matrix structure. The matrix contains an amorphous resin which contains a vinyl resin having an acid group, the domain contains a crystalline resin which is formed by combining a vinyl polymerized segment and a polyester polymerized segment. A content of the crystalline resin falls within a range from 3 to 30% by mass.
Abstract translation: 公开了一种静电潜像显影调色剂，其含有具有畴 - 矩阵结构的调色剂主体颗粒。 基质含有含有具有酸基的乙烯基树脂的无定形树脂，该结构域含有通过将乙烯基聚合链段和聚酯聚合链段结合而形成的结晶性树脂。 结晶性树脂的含量在3〜30质量％的范围内。
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公开(公告)号：US20220390873A1
公开(公告)日：2022-12-08
申请号：US17825127
申请日：2022-05-26
Applicant: Konica Minolta, Inc.
Inventor： Shinya OBARA , Koji SHIBATA , Ikuko SAKURADA
Abstract: Provided is a two-component developer for electrostatic charge image development including: toner particles containing toner base particles and an external additive disposed on a surface of the toner base particles; and carrier particles having a core material particle and a shell portion disposed on a surface of the core material particle, wherein the external additive contains inorganic particles surface-modified with a surface modifier represented by the following Formula (1); and a value of an iron element content (atomic %) measured by X-ray photoelectron spectroscopy (XPS) on a surface of the carrier particles satisfies the following Expression (1), (R1)4-n—Si—(X)n Formula (1): 4.0≤{AFe/(Ac+Ao+AFe)}×100≤15.0 Expression (1):
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公开(公告)号：US20200174388A1
公开(公告)日：2020-06-04
申请号：US16658912
申请日：2019-10-21
Applicant: Konica Minolta, Inc.
Inventor： Koji SHIBATA , Shinya OBARA , Junya UEDA , Takuya TAKAHASHI
Abstract: It is a two-component developer for electrostatic charge image development, which contains toner containing at least a binder resin and an external additive on a surface and a carrier containing a resin layer at least on a surface of a core material. The binder resin contains a crystalline polyester resin, the external additive contains alumina particles, and the resin layer contains a silicone resin.
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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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