Patents by Inventor Atsushi MAJIMA

Atsushi MAJIMA 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: 20240109253
    Abstract: This three dimensional molding device includes a plasticizing section having a screw in which a groove is formed and generating a plasticized material by plasticizing a material by rotating the screw; a nozzle having a nozzle opening and ejecting the plasticized material; an ejection adjustment section provided in a flow path, which communicates with the nozzle opening, and adjusting an ejecting amount of the plasticized material from the nozzle by adjusting an opening area of the flow path; and a control section, wherein the control section controls a rotation speed of the screw at a first rotation speed when the opening area is a first opening area and controls the rotation speed of the screw at a second rotation speed that is faster than the first rotation speed when the opening area is a second opening area that is larger than the first opening area.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 4, 2024
    Inventor: Atsushi MAJIMA
  • Publication number: 20240066806
    Abstract: A 3D-modeling system includes a first discharge section, a second discharge section, a stage, a heating section, and a control section, wherein the control section performs a modeling process molding a first molded object and a second molded object on a modeling surface by controlling the first and second discharge sections to discharge modeling materials having different plasticization temperatures from each other from the first and second discharge sections and a heating process by controlling the heating section configured to heat the molding materials discharged from the first and second discharge sections at different temperatures from each other, and the modeling process is performed such that a period in which the modeling material discharged from the first discharge section is deposited on the modeling surface and a period in which the modeling material discharged from the second discharge section is deposited on the modeling surface overlap each other.
    Type: Application
    Filed: August 25, 2023
    Publication date: February 29, 2024
    Inventors: Tatsuya TERAMOTO, Kazuhide NAKAMURA, Atsushi MAJIMA
  • Publication number: 20230264425
    Abstract: A method of manufacturing a three-dimensional shaped object includes a first process of determining a moving speed of a discharge part in each of a plurality of partial paths based on an arrangement of endpoints representing a start point and an end point of the plurality of partial paths, the arrangement of the endpoints being included in path information in which a movement path in which the discharge part moves while discharging a shaping material toward a stage is indicated by the plurality of partial paths, and a second process of discharging the shaping material from the discharge part while moving the discharge part at the determined moving speed to laminate layers.
    Type: Application
    Filed: February 17, 2023
    Publication date: August 24, 2023
    Inventors: Atsushi MAJIMA, Kohei ADACHI, Masaaki OGIHARA
  • Patent number: 11413809
    Abstract: A three-dimensional shaping device includes a plasticization unit configured to plasticize a material into a shaping material using a rotating screw; a drive unit configured to rotate the screw; a supply flow path through which the shaping material flows; a nozzle configured to discharge the shaping material; a discharge amount adjusting mechanism configured to switch between stop and restart of discharge of the shaping material from the nozzle by a valve portion provided in the supply flow path; a pressure measuring portion configured to measure a pressure of the shaping material in the supply flow path between the plasticization unit and the valve portion; and a control unit configured to adjust rotation of the screw by controlling the drive unit according to a measured value of the pressure which is measured.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: August 16, 2022
    Inventors: Taki Hashimoto, Kohei Yuwaki, Atsushi Majima
  • Publication number: 20220234280
    Abstract: A three-dimensional shaping device includes a plasticization unit configured to plasticize a material into a shaping material using a rotating screw; a drive unit configured to rotate the screw; a supply flow path through which the shaping material flows; a nozzle configured to discharge the shaping material; a discharge amount adjusting mechanism configured to switch between stop and restart of discharge of the shaping material from the nozzle by a valve portion provided in the supply flow path; a pressure measuring portion configured to measure a pressure of the shaping material in the supply flow path between the plasticization unit and the valve portion; and a control unit configured to adjust rotation of the screw by controlling the drive unit according to a measured value of the pressure which is measured.
    Type: Application
    Filed: April 13, 2022
    Publication date: July 28, 2022
    Inventors: Taki HASHIMOTO, Kohei YUWAKI, Atsushi MAJIMA
  • Publication number: 20200406531
    Abstract: A three-dimensional shaping device includes a plasticization unit configured to plasticize a material into a shaping material using a rotating screw; a drive unit configured to rotate the screw; a supply flow path through which the shaping material flows; a nozzle configured to discharge the shaping material; a discharge amount adjusting mechanism configured to switch between stop and restart of discharge of the shaping material from the nozzle by a valve portion provided in the supply flow path; a pressure measuring portion configured to measure a pressure of the shaping material in the supply flow path between the plasticization unit and the valve portion; and a control unit configured to adjust rotation of the screw by controlling the drive unit according to a measured value of the pressure which is measured.
    Type: Application
    Filed: June 25, 2020
    Publication date: December 31, 2020
    Inventors: Taki HASHIMOTO, Kohei YUWAKI, Atsushi MAJIMA
  • Patent number: 10245848
    Abstract: A printing apparatus includes a printing unit that prints on a roll paper, a transporting unit that transports the roll paper having been printed on along a transport surface, and a drying unit that performs a drying process (post-process) on the roll paper on the transport surface. The drying unit includes a cover (casing) that covers the roll paper on the transport surface. The cover has an inspection window that allows the roll paper on the transport surface to be visually inspected.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 2, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Seijun Horie, Atsushi Majima
  • Publication number: 20180126754
    Abstract: A printing apparatus includes a printing unit that prints on a roll paper, a transporting unit that transports the roll paper having been printed on along a transport surface, and a drying unit that performs a drying process (post-process) on the roll paper on the transport surface. The drying unit includes a cover (casing) that covers the roll paper on the transport surface. The cover has an inspection window that allows the roll paper on the transport surface to be visually inspected.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 10, 2018
    Inventors: Seijun HORIE, Atsushi MAJIMA
  • Patent number: 9487030
    Abstract: A medium holding member that is attached to a medium supporting portion includes a fitting portion that is fit into the medium supporting portion and that is located at each of at least one portion in an upstream side edge portion of the medium holding member in a medium transportation direction.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: November 8, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Teruhiko Wakabayashi, Atsushi Majima, Eiji Kumai, Osamu Hara
  • Publication number: 20160089905
    Abstract: A medium holding member that is attached to a medium supporting portion includes a fitting portion that is fit into the medium supporting portion and that is located at each of at least one portion in an upstream side edge portion of the medium holding member in a medium transportation direction.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Inventors: Teruhiko WAKABAYASHI, Atsushi MAJIMA, Eiji KUMAI, Osamu HARA