Patents by Inventor Shunsuke Horie

Shunsuke Horie 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: 12275254
    Abstract: An inkjet printing method including: discharging ink contained in an ink storage unit, from a nozzle of a nozzle forming surface of a discharging unit; and supplying the ink from the ink storage unit to the discharging unit. The ink includes specific components and satisfies a specific relation between dynamic surface tension and time. The supplying includes: forming a closed space by covering the nozzle forming surface with a lid member, and freely controlling a pressure between the discharging unit and the ink storage unit; and forming an open space by opening the lid member on the nozzle forming surface, and setting the pressure to be the same as atmospheric pressure. A negative pressure difference between the ink storage unit and the discharging unit is 70-120 mmAq before discharge of the ink, 30-80 mmAq during the discharging, and the former is equal to or greater than the latter.
    Type: Grant
    Filed: May 25, 2023
    Date of Patent: April 15, 2025
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenta Hagiwara, Shunsuke Horie, Hiroki Kobayashi
  • Patent number: 12231009
    Abstract: To prevent varnish from adhering to an adhesion prohibited area while satisfying required performance for varnish. A method for manufacturing a stator of a rotating electric machine in which a coil is wound around a stator core, the method includes: a first varnish process of forming a first varnish portion by dropping varnish at a coil disposed on an outermost circumference or an innermost circumference of a coil end portion where the coil protrudes from the stator core and positioned close to the stator core; and a second varnish process of forming a second varnish portion to provide a non-existence region where varnish is not applied between the first varnish portion and the second varnish portion by dropping varnish at a position farther from the stator core than a position in the first varnish process.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: February 18, 2025
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yukiko Kawano, Hiroshi Horie, Hiroshi Hamano, Hideaki Noto, Shunsuke Isogai, Chihiro Oinuma, Hirona Tanaka
  • Patent number: 11964495
    Abstract: Provided is an ink set including: an ink containing a cyan pigment; an ink containing a magenta pigment; and an ink containing a yellow pigment, wherein the proportion of the cyan pigment is 0.70% by mass or greater but 1.40% by mass or less, and wherein the proportion of the magenta pigment and the proportion of the yellow pigment are both higher than the proportion of the cyan pigment.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 23, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiromi Sakaguchi, Itsuro Sasaki, Ayaka Tanaka, Naoto Shimura, Shunsuke Horie, Hiroshi Gotou, Yuta Nakamura
  • Patent number: 11904600
    Abstract: A printing method includes discharging ink to a substrate, heating a non-ink-discharged side of the substrate at T1, and heating an ink-discharged side of the substrate at T2, wherein the ink contains an organic solvent A (boiling point lower than 250 degrees C.), an organic solvent B (boiling point of 250 degrees C.), and a resin, where 0 degrees C. C?T2?T1?90 degrees C. is satisfied, the proportion (organic solvent A/ink) is 30 percent by mass or less, the proportion (organic solvent B/ink) is 1 to 3 percent by mass, the proportion (resin/ink) is 5 to 15 percent by mass, the ink has a viscosity of 8.0 to 11.0 mPa-s at 25 degrees C. and 5.5 to 11.0 mPa-s at 36 degrees C., and a 2.5 ?L ink droplet discharged to the substrate shrinks to 0.1 ?L within 10.0 seconds at 25 degrees C.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: February 20, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naoto Shimura, Yuya Hirokawa, Yuusuke Koizuka, Takayuki Shimizu, Itsuro Sasaki, Shunsuke Horie, Nozomi Terai, Kenta Hagiwara
  • Publication number: 20230382122
    Abstract: An inkjet printing method including: discharging ink contained in an ink storage unit, from a nozzle of a nozzle forming surface of a discharging unit; and supplying the ink from the ink storage unit to the discharging unit. The ink includes specific components and satisfies a specific relation between dynamic surface tension and time. The supplying includes: forming a closed space by covering the nozzle forming surface with a lid member, and freely controlling a pressure between the discharging unit and the ink storage unit; and forming an open space by opening the lid member on the nozzle forming surface, and setting the pressure to be the same as atmospheric pressure. A negative pressure difference between the ink storage unit and the discharging unit is 70-120 mmAq before discharge of the ink, 30-80 mmAq during the discharging, and the former is equal to or greater than the latter.
    Type: Application
    Filed: May 25, 2023
    Publication date: November 30, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Kenta Hagiwara, Shunsuke Horie, Hiroki Kobayashi
  • Publication number: 20220324241
    Abstract: A printing method includes discharging ink to a substrate, heating a non-ink-discharged side of the substrate at T1, and heating an ink-discharged side of the substrate at T2, wherein the ink contains an organic solvent A (boiling point lower than 250 degrees C.), an organic solvent B (boiling point of 250 degrees C.), and a resin, where 0 degrees C. C?T2?T1?90 degrees C. is satisfied, the proportion (organic solvent A/ink) is 30 percent by mass or less, the proportion (organic solvent B/ink) is 1 to 3 percent by mass, the proportion (resin/ink) is 5 to 15 percent by mass, the ink has a viscosity of 8.0 to 11.0 mPa-s at 25 degrees C. and 5.5 to 11.0 mPa-s at 36 degrees C., and a 2.5 ?L ink droplet discharged to the substrate shrinks to 0.1 ?L within 10.0 seconds at 25 degrees C.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 13, 2022
    Inventors: Naoto SHIMURA, Yuya HIROKAWA, Yuusuke KOIZUKA, Takayuki SHIMIZU, Itsuro SASAKI, Shunsuke HORIE, Nozomi TERAI, Kenta HAGIWARA
  • Publication number: 20220024217
    Abstract: Provided is an ink set including: an ink containing a cyan pigment; an ink containing a magenta pigment; and an ink containing a yellow pigment, wherein the proportion of the cyan pigment is 0.70% by mass or greater but 1.40% by mass or less, and wherein the proportion of the magenta pigment and the proportion of the yellow pigment are both higher than the proportion of the cyan pigment.
    Type: Application
    Filed: January 21, 2020
    Publication date: January 27, 2022
    Inventors: Hiromi SAKAGUCHI, Itsuro SASAKI, Ayaka TANAKA, Naoto SHIMURA, Shunsuke HORIE, Hiroshi GOTOU, Yuta NAKAMURA
  • Publication number: 20200207096
    Abstract: A printer is provided. The printer includes a discharger and a wiper. The discharger has a nozzle surface and contains an ink comprising an organic solvent in an amount of more than 60% by mass of the ink. The discharger is configured to discharge the ink from the nozzle. The wiper is configured to wipe the nozzle surface. The wiper comprises a laminated body including a plurality of layers including a first layer that contacts the nozzle surface. A thickness t1 of the first layer and a total thickness t2 of one or more of the layers other than the first layer satisfy the following relation t1<t2. The first layer has a void ratio smaller than a void ratio of at least one of the layers other than the first layer.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 2, 2020
    Inventors: Shunsuke Horie, Takumi Atake, Akira Izutani