Patents by Inventor Shunta NAKAMURA

Shunta NAKAMURA 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: 11110711
    Abstract: A liquid agent mist recovery device for a liquid agent application device prevents dripping of a droplet formed from a sucked liquid agent mist onto a sheet. The ink mist recovery device installed downstream of an inkjet head includes a recovery casing with an opening for introducing the mist. The opening is communicated with a recovery hole connected to a suction fun, and positioned apart from an upstream wall surface by a distance corresponding to receiving portions for receiving a droplet trickling from the wall surface, and apart from a downstream wall surface so that air introduced from downstream obstructs the flow of the upstream liquid agent mist for guiding into the recovery hole. The liquid agent mist from upstream is securely introduced and recovered. The liquid agent mist trickling from the wall surface of the recovery hole is received by the receiving portion rather than dripping onto the sheet.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 7, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Shunta Nakamura
  • Patent number: 11090943
    Abstract: An ink mist recovery device allows suction of ink mist with uniform suction force irrespective of a position on a confronting sheet. The ink mist recovery device includes a recovery casing having multiple suction ports confronting a sheet, and a suction unit connected to the recovery casing. At least one of a size of each of the suction ports and a first suction distance from each of the suction ports to a suction slit is set in accordance with a second suction distance from the suction unit to the suction slit via each of the suction ports so that the suction force is kept uniform at the respective positions on the sheet corresponding to the suction ports. The mist suction force is made uniform over the entire width of the suction slit to improve quality of the printed image without sucking ink droplets required to land.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: August 17, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Shunta Nakamura
  • Publication number: 20200262206
    Abstract: An ink mist recovery device allows suction of ink mist with uniform suction force irrespective of a position on a confronting sheet. The ink mist recovery device includes a recovery casing having multiple suction ports confronting a sheet, and a suction unit connected to the recovery casing. At least one of a size of each of the suction ports and a first suction distance from each of the suction ports to a suction slit is set in accordance with a second suction distance from the suction unit to the suction slit via each of the suction ports so that the suction force is kept uniform at the respective positions on the sheet corresponding to the suction ports. The mist suction force is made uniform over the entire width of the suction slit to improve quality of the printed image without sucking ink droplets required to land.
    Type: Application
    Filed: February 18, 2020
    Publication date: August 20, 2020
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Shunta NAKAMURA
  • Publication number: 20200262207
    Abstract: A liquid agent mist recovery device for a liquid agent application device prevents dripping of a droplet formed from a sucked liquid agent mist onto a sheet. The ink mist recovery device installed downstream of an inkjet head includes a recovery casing with an opening for introducing the mist. The opening is communicated with a recovery hole connected to a suction fun, and positioned apart from an upstream wall surface by a distance corresponding to receiving portions for receiving a droplet trickling from the wall surface, and apart from a downstream wall surface so that air introduced from downstream obstructs the flow of the upstream liquid agent mist for guiding into the recovery hole. The liquid agent mist from upstream is securely introduced and recovered. The liquid agent mist trickling from the wall surface of the recovery hole is received by the receiving portion rather than dripping onto the sheet.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 20, 2020
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Shunta NAKAMURA
  • Patent number: 10328704
    Abstract: An inkjet printer includes: at least one ink receptor having a tray shape with a bottom plate and an opening facing upward and being horizontally movable; and a suction unit. The at least one ink receptor is configured to receive ink ejected from at least one inkjet head as waste liquid. The suction unit includes at least one suction nozzle arranged above the bottom plate within a movable range of the at least one ink receptor and is configured to suction the ink in the at least one ink receptor through the opening with the at least one suction nozzle.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 25, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Yasuhiro Katada, Akira Nishiyama, Shunta Nakamura, Naoto Tsujino
  • Publication number: 20180281424
    Abstract: An inkjet printer includes: at least one ink receptor having a tray shape with a bottom plate and an opening facing upward and being horizontally movable; and a suction unit. The at least one ink receptor is configured to receive ink ejected from at least one inkjet head as waste liquid. The suction unit includes at least one suction nozzle arranged above the bottom plate within a movable range of the at least one ink receptor and is configured to suction the ink in the at least one ink receptor through the opening with the at least one suction nozzle.
    Type: Application
    Filed: March 7, 2018
    Publication date: October 4, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Yasuhiro KATADA, Akira NISHIYAMA, Shunta NAKAMURA, Naoto TSUJINO
  • Patent number: 10065414
    Abstract: An inkjet printing apparatus includes: a print bar unit having a print bar, a maintainer, and a movement driver; and a controller. Upon maintenance of an inkjet head of the print bar, the controller is configured to drive the movement driver to move the maintainer from a deployment position to a retreat position with the print bar arranged at a maintenance position above a height position for printing while wiping a nozzle surface of the inkjet head with the wiper of the maintainer being moved. The deployment position is a position under the inkjet head in maintenance of the inkjet head and the retreat position is a position where the maintainer is retreated from the deployment position.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: September 4, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Akira Nishiyama, Shunta Nakamura
  • Publication number: 20170341374
    Abstract: An inkjet printing apparatus includes: a print bar unit having a print bar, a maintainer, and a movement driver; and a controller. Upon maintenance of an inkjet head of the print bar, the controller is configured to drive the movement driver to move the maintainer from a deployment position to a retreat position with the print bar arranged at a maintenance position above a height position for printing while wiping a nozzle surface of the inkjet head with the wiper of the maintainer being moved. The deployment position is a position under the inkjet head in maintenance of the inkjet head and the retreat position is a position where the maintainer is retreated from the deployment position.
    Type: Application
    Filed: April 20, 2017
    Publication date: November 30, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Akira NISHIYAMA, Shunta NAKAMURA