Patents by Inventor Mami TOJINO

Mami TOJINO 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: 20220186062
    Abstract: A dispersion liquid includes water, a coloring material, a dispersion resin that disperses the coloring material, and a compound having s sulfonate group and a polymerizable group. The dispersion resin has a constituent unit A containing a hydrophobic monomer and a constituent unit B containing a monomer having a sulfonate group. The weight-average molecular weight of the dispersion resin is 5,000 to 100,000, and the molecular weight of the compound is 300 or less.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 16, 2022
    Inventors: Hajime KAKISHITA, Mami TOJINO, Toshihiro OTAKE, Koichi TERAO, Hiroshi ITO, Koji HORIBA
  • Patent number: 11359104
    Abstract: An ink composition includes resin particles, one or more surfactants, one or more water-soluble organic solvents, and a glycol ether, where: the surfactants include a fluorosurfactant having a predetermined structure and an HLB value determined by Griffin's method of 11 or less; the water-soluble organic solvents include one or more selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, polyethylene glycol having a weight-average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol, and diglycerol; and the glycol ether has a predetermined structure and an HLB value determined by Griffin's method of 11 or less.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 14, 2022
    Inventors: Keigo Ando, Mami Tojino
  • Publication number: 20220162367
    Abstract: A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material. The dispersion resin has a constituent unit A containing a hydrophobic monomer, and a predetermined constituent unit B.
    Type: Application
    Filed: November 24, 2021
    Publication date: May 26, 2022
    Inventor: Mami TOJINO
  • Publication number: 20220154021
    Abstract: A dispersion liquid includes water, a coloring material, and a dispersing resin which disperses the coloring material, in which the dispersing resin has a predetermined constituent unit A, a predetermined constituent unit B, and a predetermined constituent unit C.
    Type: Application
    Filed: November 18, 2021
    Publication date: May 19, 2022
    Inventors: Koichi TERAO, Mami TOJINO, Toshihiro OTAKE, Hiroshi ITO, Koji HORIBA
  • Publication number: 20220154022
    Abstract: A dispersion liquid includes water, a coloring material, and a dispersing resin which disperses the coloring material, in which the dispersing resin has a predetermined constituent unit A, a predetermined constituent unit B, and a predetermined constituent unit C.
    Type: Application
    Filed: November 18, 2021
    Publication date: May 19, 2022
    Inventors: Koichi TERAO, Mami TOJINO, Toshihiro OTAKE, Hiroshi ITO, Koji HORIBA
  • Publication number: 20220089890
    Abstract: A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material. The dispersion resin has a constituent unit A containing a hydrophobic monomer, a constituent unit B containing a hydrophilic acrylic acid monomer, and a constituent unit C containing a hydrophilic vinyl monomer having a sulfonate group, and the weight-average molecular weight of the dispersion resin is 10,000 to 100,000. The content of the constituent unit A is 60 mol % or more relative to the total amount of the dispersion resin.
    Type: Application
    Filed: September 23, 2021
    Publication date: March 24, 2022
    Inventors: Mami TOJINO, Toshihiro OTAKE, Koichi TERAO, Hiroshi ITO, Koji HORIBA
  • Publication number: 20220025204
    Abstract: A dispersion contains water, a color material, and a dispersing resin that disperses the color material, the dispersing resin having a structural unit A containing a hydrophobic monomer, a structural unit B containing a hydrophilic acrylic acid monomer, and a structural unit C containing a sulfonic acid group-containing acrylamide monomer, where the dispersing resin has a weight average molecular weight of from 5000 to 100000 and a content of the structural unit A is 60 mol % or more with respect to a total amount of the dispersing resin.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 27, 2022
    Inventors: Toshihiro OTAKE, Koichi TERAO, Mami TOJINO, Hiroshi ITO, Koji HORIBA
  • Patent number: 10603930
    Abstract: A recording method includes heating a recording medium and attaching an ink composition including an organic solvent and water to the heated recording medium by performing a main scanning a plurality of times. In each main scanning the ink composition is ejected from a recording head while a position of the recording head relative to the recording medium in a main scanning direction is changed. In the ink composition, an absolute value of a difference between a surface tension of the ink composition and a surface tension of the ink composition when the ink composition is evaporated up to an evaporation amount of 0% to 40% by mass is 1 mN/m or less.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Mami Tojino, Ippei Okuda, Akira Mizutani
  • Publication number: 20200062980
    Abstract: An ink composition includes resin particles, one or more surfactants, one or more water-soluble organic solvents, and a glycol ether, where: the surfactants include a fluorosurfactant having a predetermined structure and an HLB value determined by Griffin's method of 11 or less; the water-soluble organic solvents include one or more selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, polyethylene glycol having a weight-average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol, and diglycerol; and the glycol ether has a predetermined structure and an HLB value determined by Griffin's method of 11 or less.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Keigo ANDO, Mami TOJINO
  • Publication number: 20190126640
    Abstract: A recording method includes heating a recording medium and attaching an ink composition including an organic solvent and water to the heated recording medium by performing a main scanning a plurality of times. In each main scanning the ink composition is ejected from a recording head while a position of the recording head relative to the recording medium in a main scanning direction is changed. In the ink composition, an absolute value of a difference between a surface tension of the ink composition and a surface tension of the ink composition when the ink composition is evaporated up to an evaporation amount of 0% to 40% by mass is 1 mN/m or less.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Inventors: Mami TOJINO, Ippei OKUDA, Akira MIZUTANI