中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

23 records (took 0.022 seconds)

    Two-component developer for developing electrostatic latent image
    2.
    发明授权
    Two-component developer for developing electrostatic latent image 有权

    公开(公告)号：US10437166B2

    公开(公告)日：2019-10-08

    申请号：US16138485

    申请日：2018-09-21

    Applicant: Konica Minolta, Inc.

    Inventor： Koji Shibata ,  Shinya Obara ,  Satoshi Uchino

    IPC: G03G9/08 ,  G03G9/113 ,  G03G9/107 ,  G03G9/087 ,  G03G9/083 ,  G03G9/097

    Abstract: Provided is a two-component developer for developing an electrostatic latent image incorporating: toner particles each containing a toner mother particle having an external additive on a surface of the toner mother particle; and carrier particles each having a core material particle and a covering layer containing a resin on a surface of the core material particle, wherein the external additive contains inorganic particles; the inorganic particles are subjected to surface modification with silicone oil; a carbon content remained on a surface of the inorganic particle after the surface modification is within 3.0 to 10.0 mass %; a free carbon ratio on the surface of the inorganic particle is 70.0% or more; the carrier particles have a resistance in the range of 1.0×109 to 5.0×1010 Ω·cm; and the resin in the covering layer contains a resin formed from a monomer containing an alicyclic methacrylic acid ester monomer.

    Toner for developing electrostatic charge image
    3.
    发明授权
    Toner for developing electrostatic charge image 有权

    公开(公告)号：US11079694B2

    公开(公告)日：2021-08-03

    申请号：US16793401

    申请日：2020-02-18

    Applicant: Konica Minolta, Inc.

    Inventor： Kenshi Miyajima ,  Shinya Obara ,  Ikuko Sakurada

    IPC: G03G9/08 ,  G03G9/087 ,  G03G9/097

    Abstract: A toner for electrostatic charge image development is a toner for electrostatic charge image development including toner particles containing a binder resin and an external additive, wherein the binder resin contains a crystalline polyester resin and an amorphous polyester resin, the external additive includes Al—Si composite oxide particles, and a Si element content of the Al—Si composite oxide particles is in the range of 50 to 90 mass % and a Si element ratio on surfaces of the Al—Si composite oxide particles is in the range of 3 to 35 at %.

    ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER
    5.
    发明申请
    ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER 审中-公开
    静电充电图像显影剂

    公开(公告)号：US20150309433A1

    公开(公告)日：2015-10-29

    申请号：US14682708

    申请日：2015-04-09

    Applicant: Konica Minolta Inc.

    Inventor： Ikuko SAKURADA ,  Satoshi Uchino ,  Yasuko Uchino ,  Shinya Obara ,  Futoshi Kadonome ,  Hiroyuki Kozuru

    IPC: G03G9/087 ,  G03G9/08

    CPC classification number: G03G9/08711 ,  G03G9/0819 ,  G03G9/08724 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/09725

    Abstract: An electrostatic charge image developing toner includes: toner matrix particles containing a binder resin; and an external additive added to the toner matrix particles, wherein the external additive includes joined particles each including a secondary particle including a plurality of spherical primary particles joined together, the joined particles include at least particles with a secondary particle size d2 in the range of 70 nm to 400 nm, and particles with a ratio d2/d1 in the range of 1.6 to 4.2 make up at least 50% by number of the particles with a secondary particle size d2 in the range of 70 nm to 400 nm, wherein d1 is the diameter of primary particles in the joined particle, and d2 is the secondary particle size.

    Abstract translation: 静电荷图像显影调色剂包括：含有粘合剂树脂的调色剂基质颗粒; 和添加到调色剂基质颗粒中的外部添加剂，其中外部添加剂包括各自包括连接在一起的包括多个球形初级颗粒的二次颗粒的接合颗粒，所接合的颗粒至少包括二次颗粒尺寸为d2的颗粒在 70nm〜400nm的范围，d2 / d1在1.6〜4.2的范围内的粒子的二次粒径d2在70nm〜400nm的范围内至少为50％，其中d1 是连接颗粒中一次颗粒的直径，d2是二次颗粒尺寸。

    IMAGE FORMING METHOD
    6.
    发明申请
    IMAGE FORMING METHOD 有权
    图像形成方法

    公开(公告)号：US20150248069A1

    公开(公告)日：2015-09-03

    申请号：US14628831

    申请日：2015-02-23

    Applicant: Konica Minolta, Inc.

    Inventor： Satoshi UCHINO ,  Shinya Obara ,  Yasuko Uchino ,  Ikuko Sakurada

    IPC: G03G9/08

    CPC classification number: G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725

    Abstract: An image forming method includes: charging a surface of an electrostatic latent image holder with a charging roller; exposing the charged surface so as to form an electrostatic latent image; and developing the formed electrostatic latent image with toner. The toner contains at least a toner base particle and an external additive minute particle. The external additive minute particle contains a silica-polymer composite minute particle. A silicon atom abundance ratio obtained from abundances of a carbon atom, an oxygen atom and a silicon atom present on an outermost surface and within 3 nm from the outermost surface in a depth direction of the silica-polymer composite minute particle are measured with an x-ray photoelectron spectrometer satisfies at least the following condition A. 15.0 atm %≦silicon atom abundance ratio ({Si/(C+O+Si)}×100)≦30.0 atm %   [Condition A]

    Abstract translation: 图像形成方法包括：利用充电辊对静电潜像保持器的表面进行充电; 暴露带电表面以形成静电潜像; 并用调色剂显影形成的静电潜像。 调色剂至少含有调色剂基础颗粒和外部添加剂微粒。 外部添加剂微粒包含二氧化硅 - 聚合物复合微粒。 从二氧化硅 - 聚合物复合微粒的深度方向的最外表面3nm以内，存在于最外表面的碳原子，氧原子和硅原子的丰度得到的硅原子丰度比用x -ray光电子能谱仪满足以下条件A. 15.0atm％＆nlE;硅原子丰度比（{Si /（C + O + Si）}×100）＆nlE; 30.0atm％[条件A]

    Electrostatic latent image developing toner
    7.
    发明授权
    Electrostatic latent image developing toner 有权

    公开(公告)号：US09904194B2

    公开(公告)日：2018-02-27

    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

    IPC: G03G9/08 ,  G03G9/087 ,  G03G9/097

    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)

    ELECTROSTATIC LATENT IMAGE DEVELOPING TONER AND IMAGE FORMING METHOD
    9.
    发明申请
    ELECTROSTATIC LATENT IMAGE DEVELOPING TONER AND IMAGE FORMING METHOD 审中-公开

    公开(公告)号：US20190278192A1

    公开(公告)日：2019-09-12

    申请号：US16269020

    申请日：2019-02-06

    Applicant: Konica Minolta, Inc.

    Inventor： Koji Shibata ,  Takuya Takahashi ,  Futoshi Kadonome ,  Shinya Obara

    IPC: G03G9/08

    Abstract: Provided is an electrostatic latent image developing toner including toner mother particles having an external additive on a surface of the toner mother particles, wherein the external additive contains inorganic particles and aliphatic acid metal salt particles; the inorganic particles have a number average particle diameter in the range of 10 to 50 nm, and have a Mohs hardness of 8 or more; and the aliphatic acid metal salt particles have a number average particle diameter in the range of 0.4 to 2.0 μm.

Patent Agency Ranking