Patents by Inventor Tsutomu Umebayashi

Tsutomu Umebayashi 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).

  • Patent number: 11458754
    Abstract: An ink set includes an ink-jet color ink that contains a colorant, an organic solvent, a polymerizable compound, and a photopolymerization initiator and a clear ink which contains an organic solvent and a vinyl chloride-vinyl acetate copolymer and in which Mt2/Mt1 is 0.40 or more where Mt1 represents a total mass content of a nonvolatile component, and Mt2 represents a mass content of the vinyl chloride-vinyl acetate copolymer.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 4, 2022
    Assignee: FUJIFILM CORPORATION
    Inventor: Tsutomu Umebayashi
  • Patent number: 11248136
    Abstract: Provided is an ink jet liquid composition including an organic solvent, a bifunctional urethane (meth)acrylate oligomer having a weight-average molecular weight of 2,000 to 15,000, a photopolymerization initiator, and a vinyl chloride-vinyl acetate copolymer, in which a content of the organic solvent is 40% by mass or more and 90% by mass or less with respect to a total mass of the liquid composition. Also provided is an ink jet recording method using the ink jet liquid composition.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 15, 2022
    Assignee: FUJIFILM CORPORATION
    Inventors: Tsutomu Umebayashi, Toshihiro Kamada, Yusuke Fujii
  • Patent number: 10883010
    Abstract: An ink jet liquid composition contains an organic solvent, a polymerizable compound, a photopolymerization initiator, and a polyether-modified siloxane compound having a weight-average molecular weight of 3,000 or more, and the content of the organic solvent is 40% by mass or more and 90% by mass or less with respect to the total mass of the composition. In addition, an ink jet recording method using the ink jet liquid composition is provided.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 5, 2021
    Assignee: FUJIFILM CORPORATION
    Inventors: Yusuke Fujii, Tsutomu Umebayashi, Toshihiro Kamada
  • Patent number: 10793732
    Abstract: An ink composition including: a microcapsule having: a shell having a three-dimensional cross-linked structure including at least one of a urethane bond or a urea bond; and a core encapsulated by the shell; a colorant selected from the group consisting of a colorant having an ionic group and a colorant at least a part of a surface of which being covered with a dispersant having an ionic group; and water, a content ratio of an acidic group-containing compound having at least an acidic group, an acid dissociation constant of 5 or less, and a molecular weight of 2000 or less, relative to a total mass of the ink composition, is 0.5 mass % or less; an ink set, a method for producing an ink composition, and an image recording method.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: October 6, 2020
    Assignee: FUJIFILM CORPORATION
    Inventors: Ichiro Koyama, Noriaki Sato, Shota Suzuki, Tsutomu Umebayashi
  • Publication number: 20200254799
    Abstract: An ink set includes an ink-jet color ink that contains a colorant, an organic solvent, a polymerizable compound, and a photopolymerization initiator and a clear ink which contains an organic solvent and a vinyl chloride-vinyl acetate copolymer and in which Mt2/Mt1 is 0.40 or more where Mt1 represents a total mass content of a nonvolatile component, and Mt2 represents a mass content of the vinyl chloride-vinyl acetate copolymer.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventor: Tsutomu UMEBAYASHI
  • Patent number: 10683427
    Abstract: Provided are an ink jet recording method including a colored ink jetting step of jetting a colored ink including a coloring agent and an organic solvent from an ink jet head onto a recording medium, a colored ink heating step of heating the colored ink jetted onto the recording medium by maintaining a surface temperature of the recording medium at 40° C. or higher, a colorless ink jetting step of jetting a colorless ink including a polymerizable compound, a photopolymerization initiator, and an organic solvent from the ink jet head onto the colored ink after the heating, a colorless ink heating step of heating the colorless ink jetted onto the colored ink after the heating by maintaining the surface temperature of the recording medium at 40° C. or higher, and a colorless ink curing step of curing the colorless ink by irradiating the heated colorless ink with an active energy ray and an ink jet recording device.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: June 16, 2020
    Assignee: FUJIFILM CORPORATION
    Inventor: Tsutomu Umebayashi
  • Patent number: 10655032
    Abstract: Provided is an ink jet recording method, including a step of jetting, on a substrate, an ink composition A that contains a microcapsule having at least a polymerizable compound within the microcapsule, a high boiling solvent, water, and a colorant, and an ink composition B that contains a microcapsule having at least a polymerizable compound within the microcapsule, a high boiling solvent, water, and carbon black; and a step of heating the ink composition A and the ink composition B which have been jetted on the substrate, in which absorbance ABSA of the ink composition A and absorbance ABSB of the ink composition B satisfy Formula (1), and a concentration MA of the high boiling solvent contained in the ink composition A and a concentration MB of the high boiling solvent in the ink composition B satisfy Formula (2).
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 19, 2020
    Assignee: FUJIFILM CORPORATION
    Inventors: Tsutomu Umebayashi, Ichiro Koyama, Shota Suzuki, Noriaki Sato
  • Patent number: 10563075
    Abstract: An actinic ray-curable-type inkjet ink composition for 3D printing includes an acrylate monomer A capable of forming a homopolymer having a glass transition temperature of from 25° C. to 120° C.; an acrylate monomer B capable of forming a homopolymer having a glass transition temperature of ?60° or higher and lower than 25° C.; a bifunctional acrylate oligomer C having a weight-average molecular weight of from 2,000 to 20,000; and an acylphosphine oxide compound, in which the mass content of bifunctional or higher-functional acrylate compounds is 15% by mass or less.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: February 18, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Tsutomu Umebayashi
  • Patent number: 10508210
    Abstract: An actinic ray-curable-type inkjet ink set for three-dimensional printing and a three-dimensional printing system are provided. The actinic ray-curable-type inkjet ink set for three-dimensional printing includes a white ink composition W and a color ink composition C. The three-dimensional printing system includes printing means for jetting out, a plurality of times, each of a white ink composition W and a color ink composition C using an inkjet head so as to form a color layer on a white modeled object, based on cross-sectional information of a three-dimensional modeled object.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: December 17, 2019
    Assignee: FUJIFILM CORPORATION
    Inventor: Tsutomu Umebayashi
  • Publication number: 20190352526
    Abstract: An ink jet liquid composition contains an organic solvent, a polymerizable compound, a photopolymerization initiator, and a polyether-modified siloxane compound having a weight-average molecular weight of 3,000 or more, and the content of the organic solvent is 40% by mass or more and 90% by mass or less with respect to the total mass of the composition. In addition, an ink jet recording method using the ink jet liquid composition is provided.
    Type: Application
    Filed: July 29, 2019
    Publication date: November 21, 2019
    Inventors: Yusuke FUJII, Tsutomu UMEBAYASHI, Toshihiro KAMADA
  • Patent number: 10435577
    Abstract: Provided are an ink set having: a colored ink including a solvent A1 at a content of 30% by mass or more, a polymer C1, and a colorant; and a clear ink including a solvent A2 at a content of 30% by mass or more and a bifunctional or higher-functional (meth)acrylate compound X2 having a weight average molecular weight of 1,000 to 30,000, the clear ink including X2 at a content of 5% by mass or more, in which the solubility of C1 in A2 is 10% by mass or higher; and an image forming method using this ink set.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 8, 2019
    Assignee: FUJIFILM CORPORATION
    Inventors: Toshihiro Kamada, Tsutomu Umebayashi
  • Patent number: 10392525
    Abstract: An ink jet recording method has an ejection step of ejecting, onto a substrate, an ink composition A that includes water, a coloring agent, a photopolymerization initiator, and a microcapsule enclosing a polymerizable compound therein, and an ink composition B that includes water, a coloring agent, a photopolymerization initiator, and a microcapsule enclosing a polymerizable compound therein; and an irradiation step of irradiating, with light, the ink composition A and the ink composition B ejected on the substrate. An absorbance ABSA of the ink composition A and an absorbance ABSB of the ink composition B satisfy a formula (1), and a concentration MA of the microcapsule included in the ink composition A and a concentration MB of the microcapsule included in the ink composition B satisfy a formula (2).
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: August 27, 2019
    Assignee: FUJIFILM CORPORATION
    Inventors: Tsutomu Umebayashi, Ichiro Koyama, Shota Suzuki, Noriaki Sato
  • Publication number: 20190185693
    Abstract: Provided is an ink jet liquid composition including an organic solvent, a bifunctional urethane (meth)acrylate oligomer having a weight-average molecular weight of 2,000 to 15,000, a photopolymerization initiator, and a vinyl chloride-vinyl acetate copolymer, in which a content of the organic solvent is 40% by mass or more and 90% by mass or less with respect to a total mass of the liquid composition. Also provided is an ink jet recording method using the ink jet liquid composition.
    Type: Application
    Filed: February 19, 2019
    Publication date: June 20, 2019
    Inventors: Tsutomu UMEBAYASHI, Toshihiro KAMADA, Yusuke FUJII
  • Publication number: 20190048218
    Abstract: Provided is an ink jet recording method, including a step of jetting, on a substrate, an ink composition A that contains a microcapsule having at least a polymerizable compound within the microcapsule, a high boiling solvent, water, and a colorant, and an ink composition B that contains a microcapsule having at least a polymerizable compound within the microcapsule, a high boiling solvent, water, and carbon black; and a step of heating the ink composition A and the ink composition B which have been jetted on the substrate, in which absorbance ABSA of the ink composition A and absorbance ABSB of the ink composition B satisfy Formula (1), and a concentration MA of the high boiling solvent contained in the ink composition A and a concentration MB of the high boiling solvent in the ink composition B satisfy Formula (2).
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Inventors: Tsutomu UMEBAYASHI, Ichiro KOYAMA, Shota SUZUKI, Noriaki SATO
  • Publication number: 20190023922
    Abstract: An ink composition including: a microcapsule having: a shell having a three-dimensional cross-linked structure including at least one of a urethane bond or a urea bond; and a core encapsulated by the shell; a colorant selected from the group consisting of a colorant having an ionic group and a colorant at least a part of a surface of which being covered with a dispersant having an ionic group; and water, a content ratio of an acidic group-containing compound having at least an acidic group, an acid dissociation constant of 5 or less, and a molecular weight of 2000 or less, relative to a total mass of the ink composition, is 0.5 mass % or less; an ink set, a method for producing an ink composition, and an image recording method.
    Type: Application
    Filed: July 30, 2018
    Publication date: January 24, 2019
    Inventors: Ichiro KOYAMA, Noriaki SATO, Shota SUZUKI, Tsutomu UMEBAYASHI
  • Publication number: 20190023928
    Abstract: Provided are an ink set having: a colored ink including a solvent A1 at a content of 30% by mass or more, a polymer C1, and a colorant; and a clear ink including a solvent A2 at a content of 30% by mass or more and a bifunctional or higher-functional (meth)acrylate compound X2 having a weight average molecular weight of 1,000 to 30,000, the clear ink including X2 at a content of 5% by mass or more, in which the solubility of C1 in A2 is 10% by mass or higher; and an image forming method using this ink set.
    Type: Application
    Filed: September 20, 2018
    Publication date: January 24, 2019
    Inventors: Toshihiro KAMADA, Tsutomu UMEBAYASHI
  • Publication number: 20180320017
    Abstract: An ink jet recording method has an ejection step of ejecting, onto a substrate, an ink composition A that includes water, a coloring agent, a photopolymerization initiator, and a microcapsule enclosing a polymerizable compound therein, and an ink composition B that includes water, a coloring agent, a photopolymerization initiator, and a microcapsule enclosing a polymerizable compound therein; and an irradiation step of irradiating, with light, the ink composition A and the ink composition B ejected on the substrate. An absorbance ABSA of the ink composition A and an absorbance ABSB of the ink composition B satisfy a formula (1), and a concentration MA of the microcapsule included in the ink composition A and a concentration MB of the microcapsule included in the ink composition B satisfy a formula (2).
    Type: Application
    Filed: July 17, 2018
    Publication date: November 8, 2018
    Inventors: Tsutomu UMEBAYASHI, Ichiro KOYAMA, Shota SUZUKI, Noriaki SATO
  • Publication number: 20180291218
    Abstract: An ink-jet-printer liquid composition contains an organic solvent; a polymerizable compound having a weight-average molecular weight of 1000 or more and 30000 or less; a (meth)acrylic-modified polyorganosiloxane that has no polymerizable groups, that is a copolymer of a (meth)acrylate and a reactive polysiloxane having at least one of a polymerizable group and a mercapto group, and that has a weight-average molecular weight of 20000 or more and 400000 or less; and a photopolymerization initiator, wherein a content of the organic solvent relative to a total amount of the liquid composition is 40 mass % or more and 80 mass % or less, and a content of the (meth)acrylic-modified polyorganosiloxane relative to the total amount of the liquid composition is 0.1 mass % or more and 5.0 mass % or less.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 11, 2018
    Inventor: Tsutomu UMEBAYASHI
  • Publication number: 20180282559
    Abstract: Provided are an ink jet recording method including a colored ink jetting step of jetting a colored ink including a coloring agent and an organic solvent from an ink jet head onto a recording medium, a colored ink heating step of heating the colored ink jetted onto the recording medium by maintaining a surface temperature of the recording medium at 40° C. or higher, a colorless ink jetting step of jetting a colorless ink including a polymerizable compound, a photopolymerization initiator, and an organic solvent from the ink jet head onto the colored ink after the heating, a colorless ink heating step of heating the colorless ink jetted onto the colored ink after the heating by maintaining the surface temperature of the recording medium at 40° C. or higher, and a colorless ink curing step of curing the colorless ink by irradiating the heated colorless ink with an active energy ray and an ink jet recording device.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Inventor: Tsutomu UMEBAYASHI
  • Publication number: 20180079923
    Abstract: An actinic ray-curable-type inkjet ink set for three-dimensional printing and a three-dimensional printing system are provided. The actinic ray-curable-type inkjet ink set for three-dimensional printing includes a white ink composition W and a color ink composition C. The three-dimensional printing system includes printing means for jetting out, a plurality of times, each of a white ink composition W and a color ink composition C using an inkjet head so as to form a color layer on a white modeled object, based on cross-sectional information of a three-dimensional modeled object.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Inventor: Tsutomu UMEBAYASHI