Patents by Inventor Yoichi KUJIRAOKA

Yoichi KUJIRAOKA 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: 10166762
    Abstract: An image forming apparatus includes a head unit that moves in a predetermined scanning direction and on which a first nozzle which discharges first ink including a black color material, a second nozzle which discharges second ink having higher brightness than that of the first ink, and a third nozzle which discharges third ink having higher brightness than that of the first ink are arrayed in the scanning direction, and a control portion. The control portion is set to perform a conversion processing which sets a type and amount of the ink which is discharged from the head unit according to color data included in the image data and use the first ink, the second ink, and the third ink according to the color data of the darkest point in the conversion processing.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: January 1, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Yoichi Kujiraoka
  • Publication number: 20170239939
    Abstract: An image forming apparatus includes a head unit that moves in a predetermined scanning direction and on which a first nozzle which discharges first ink including a black color material, a second nozzle which discharges second ink having higher brightness than that of the first ink, and a third nozzle which discharges third ink having higher brightness than that of the first ink are arrayed in the scanning direction, and a control portion. The control portion is set to perform a conversion processing which sets a type and amount of the ink which is discharged from the head unit according to color data included in the image data and use the first ink, the second ink, and the third ink according to the color data of the darkest point in the conversion processing.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 24, 2017
    Inventor: Yoichi KUJIRAOKA
  • Patent number: 9481188
    Abstract: A liquid droplet ejecting apparatus executes multi-pass recording constituted of N scan passes including a scan pass for an outward path and a scan pass for a return path (N being an integer of 2 or more). When a proportion of executions of dot recording using a first liquid in each scan pass is made a first recording ratio, and a proportion of executions of dot recording using a second liquid in each pass is made a second recording ratio, the first recording ratio and the second recording ratio are set such that, in a first half of the N scan passes, a total ratio of the first recording ratio is larger than a total ratio of the second recording ratio, and in a second half of the N scan passes, a total ratio of the second recording ratio is larger than a total ratio of the first recording ratio.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: November 1, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Yoichi Kujiraoka
  • Publication number: 20160279985
    Abstract: A liquid droplet ejecting apparatus executes multi-pass recording constituted of N scan passes including a scan pass for an outward path and a scan pass for a return path (N being an integer of 2 or more). When a proportion of executions of dot recording using a first liquid in each scan pass is made a first recording ratio, and a proportion of executions of dot recording using a second liquid in each pass is made a second recording ratio, the first recording ratio and the second recording ratio are set such that, in a first half of the N scan passes, a total ratio of the first recording ratio is larger than a total ratio of the second recording ratio, and in a second half of the N scan passes, a total ratio of the second recording ratio is larger than a total ratio of the first recording ratio.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 29, 2016
    Inventor: Yoichi KUJIRAOKA