Patents by Inventor Hiroko Higuchi

Hiroko Higuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200270474
    Abstract: A dispersion composition that has good storage stability, achieves high density of a colorant when used as ink, has good redispersibility after drying, and preserves the physical properties of ink when stored for a long period of time is provided. The dispersion composition comprises: (A) a dye and/or a pigment; (B) a styrene-(meth)acrylic copolymer; and (C) a compound represented by the following formula (1): where t represents 1 to 5, wherein a content of (C) the compound represented by the formula (1) is more than 0.18 mass %, and a sum total of a sodium ion concentration, a potassium ion concentration, and a lithium ion concentration in the ink dispersion composition is 6800 ppm or less.
    Type: Application
    Filed: August 31, 2018
    Publication date: August 27, 2020
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shunta MISAWA, Hiroko HIGUCHI, Shinsuke SHIMIZU, Keijyou SASAKI, Junya MASEKI, Ryutarou ITO
  • Patent number: 10640665
    Abstract: A pigment ink composition that exhibits good ejectability, particularly after standing in an open environment, and an inkjet textile printing method and a dyeing method using the ink composition. The ink composition for inkjet textile printing includes a pigment, water, a polymeric dispersant, a urethane resin, a water-soluble organic solvent, and a nonionic surfactant.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 5, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Motohiro Seki, Hiroko Higuchi
  • Publication number: 20200109302
    Abstract: An ink composition for inkjet textile printing containing a urethane resin, a dispersant and a disperse dye, in which the content of the urethane resin is greater than 0.035 mass % but less than 6 mass %, and a method for textile printing of hydrophobic fibers using the ink composition.
    Type: Application
    Filed: May 24, 2018
    Publication date: April 9, 2020
    Inventors: Keijyou SASAKI, Rima AKANUMA, Hiroko HIGUCHI, Katsunori FUJII, Makoto TERANISHI
  • Publication number: 20200040202
    Abstract: Disclosed is an ink emulsion composition that, when used as an ink composition, retains a high concentration of a colorant and exhibits good re-dispersibility after drying, and that causes no change in the physical properties of the ink when stored for a long period of time. The ink emulsion composition contains: (A) a dye and/or a pigment; (B) a styrene-(meth)acrylic copolymer; and (C) a compound in an amount of more than 0.18 mass %, the compound (C) being represented by formula (1): where t represents 1 to 5.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 6, 2020
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Keijyou SASAKI, Shinsuke SHIMIZU, Shunta MISAWA, Junya MASEKI, Hiroko HIGUCHI
  • Publication number: 20180305566
    Abstract: Disclosed is an ink emulsion composition that, when used as an ink composition, retains a high concentration of a colorant and exhibits good re-dispersibility after drying, and that causes no change in the physical properties of the ink when stored for a long period of time. The ink emulsion composition contains: (A) a dye and/or a pigment; (B) a styrene-(meth)acrylic copolymer; and (C) a compound in an amount of more than 0.18 mass %, the compound (C) being represented by formula (1): where t represents 1 to 5.
    Type: Application
    Filed: October 28, 2016
    Publication date: October 25, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Keijyou SASAKI, Shinsuke SHIMIZU, Shunta MISAWA, Junya MASEKI, Hiroko HIGUCHI
  • Publication number: 20170137648
    Abstract: A pigment ink composition that exhibits good ejectability, particularly after standing in an open environment, and an inkjet textile printing method and a dyeing method using the ink composition. The ink composition for inkjet textile printing includes a pigment, water, a polymeric dispersant, a urethane resin, a water-soluble organic solvent, and a nonionic surfactant.
    Type: Application
    Filed: March 31, 2015
    Publication date: May 18, 2017
    Inventors: Motohiro SEKI, Hiroko HIGUCHI
  • Patent number: 6760560
    Abstract: A developing apparatus has a developer supporting member 41 with a surface roughness RZ in the range from 3.0 to 5.5 &mgr;m and a one-component developer T with a bulk density in the range from 0.35 to 0.55 g/ml, and an image is developed by forming a layer of the developer T on the developer supporting member 41. This makes it possible to form a thin toner layer stably despite changes in ambient conditions, and to prevent low image density and fogging. The absolute value of the amount of electric charge with which the developer T is charged is preferably in the range from 3.0 to 10.0 &mgr;C/g. The developer supporting member 41 is made preferably of stainless steel.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: July 6, 2004
    Assignees: Kyocera Mita Corporation, Kyocera Corporation
    Inventors: Takashi Nagai, Hidekazu Tamura, Seiji Kikushima, Toru Takatsuna, Hiroko Higuchi, Hiroaki Moriyama, Kouzou Teramoto, Noriya Okamoto
  • Publication number: 20030031482
    Abstract: A developing apparatus has a developer supporting member 41 with a surface roughness RZ in the range from 3.0 to 5.5 &mgr;m and a one-component developer T with a bulk density in the range from 0.35 to 0.55 g/ml, and an image is developed by forming a layer of the developer T on the developer supporting member 41. This makes it possible to form a thin toner layer stably despite changes in ambient conditions, and to prevent low image density and fogging. The absolute value of the amount of electric charge with which the developer T is charged is preferably in the range from 3.0 to 10.0 &mgr;C/g. The developer supporting member 41 is made preferably of stainless steel.
    Type: Application
    Filed: May 30, 2002
    Publication date: February 13, 2003
    Inventors: Takashi Nagai, Hidekazu Tamura, Seiji Kikushima, Toru Takatsuna, Hiroko Higuchi, Hiroaki Moriyama, Kouzou Teramoto, Noriya Okamoto
  • Publication number: 20030027067
    Abstract: In a magnetic one-component toner containing at least a binder resin, a charge control resin, and a magnetic powder, the charge control resin has a weight-average molecular weight of 1.5×104 or less, contains 8 to 15% by weight of functional groups, and is added in 5 to 20 parts by weight to 100 parts by weight of the binder resin. This makes the toner highly safe for humans and the environment and excellent in fixability and electric chargeability.
    Type: Application
    Filed: January 31, 2002
    Publication date: February 6, 2003
    Inventors: Toru Takatsuna, Takashi Nagai, Hiroko Higuchi, Seiji Kikushima
  • Patent number: 5804347
    Abstract: This invention provides an electrophotographic toner comprising the polyester resin being fixing resin and the electric charge control resin having the functional group that endows positively charging property to the toner, in which the polyester resin has an acid value of not more than 10 mgKOH/g and a hydroxyl value of not more than 40 mgKOH/g, and the functional group is present in 2 to 5 mol % in the electric charge control resin. This electrophotographic toner has stable positively charging property, so that good image is obtainable.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: September 8, 1998
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Kazushige Inoue, Toru Takatsuna, Yukihiro Mori, Etsuro Nakagawa, Hiroko Higuchi