Patents by Inventor Tadakazu Otsuka

Tadakazu Otsuka 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: 9132638
    Abstract: An object is to shorten the printing time of an inkjet printer capable of forming a plurality of ink layers on a medium. An inkjet printer (100) includes an ink head unit (102) for ejecting ink toward a medium (M); a moving mechanism (130) for moving the ink head unit (102) in a left-right direction; a transfer mechanism (55) for transferring the medium (M) in a forward-rearward direction; and a control device (50). The control device (50) performs first printing of causing the ink head unit (102) to eject the ink while sequentially transferring the medium (M) forward and second printing of causing the ink head unit (102) to eject the ink while sequentially transferring the medium (M) rearward.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: September 15, 2015
    Assignee: ROLAND DG CORPORATION
    Inventors: Tadakazu Otsuka, Fumiyoshi Yoshizawa
  • Patent number: 8424993
    Abstract: In accordance with an embodiment, an inkjet recording apparatus is presented. The inkjet apparatus includes a recording head configured to eject an ink on a recording medium, an ink curing device configured to cure the ink ejected on the recording medium, a moving device configured to move the recording medium in a first direction and a second direction opposite to the first direction, a control device configured to control the recording head, the ink curing device, and the moving device.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: April 23, 2013
    Assignee: Roland DG Corporation
    Inventors: Katsuo Ikehata, Koji Takahashi, Tadakazu Otsuka, Fumiyoshi Yoshizawa
  • Patent number: 8393700
    Abstract: An inkjet recording apparatus is presented. The inkjet recording apparatus includes an ink head configured to move in left and right directions, comprising a plurality of nozzles arranged in a front-rear direction for discharging ink on a recording medium, wherein the ink is curable when irradiated with light from a first light emitting device or a second light emitting device, and a conveyor device configured to feed the recording medium in a direction, wherein the first light emitting device is configured to move integrally with the ink head and to apply light to the recording medium, and wherein the second light emitting device, disposed offset from the plurality of nozzles in the front-rear direction, is configured to turn on independent of the first light emitting device and to apply light to the recording medium.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 12, 2013
    Assignee: Roland DG Corporation
    Inventors: Tadakazu Otsuka, Fumiyoshi Yoshizawa
  • Publication number: 20110235069
    Abstract: An object is to shorten the printing time of an inkjet printer capable of forming a plurality of ink layers on a medium. An inkjet printer (100) includes an ink head unit (102) for ejecting ink toward a medium (M); a moving mechanism (130) for moving the ink head unit (102) in a left-right direction; a transfer mechanism (55) for transferring the medium (M) in a forward-rearward direction; and a control device (50). The control device (50) performs first printing of causing the ink head unit (102) to eject the ink while sequentially transferring the medium (M) forward and second printing of causing the ink head unit (102) to eject the ink while sequentially transferring the medium (M) rearward.
    Type: Application
    Filed: November 27, 2009
    Publication date: September 29, 2011
    Applicant: Roland DG Corporation
    Inventors: Tadakazu Otsuka, Fumiyoshi Yoshizawa
  • Publication number: 20110157272
    Abstract: In accordance with an embodiment, an inkjet recording apparatus is presented. The inkjet apparatus includes a recording head configured to eject an ink on a recording medium, an ink curing device configured to cure the ink ejected on the recording medium, a moving device configured to move the recording medium in a first direction and a second direction opposite to the first direction, a control device configured to control the recording head, the ink curing device, and the moving device.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 30, 2011
    Inventors: Katsuo Ikehata, Koji Takahashi, Tadakazu Otsuka, Fumiyoshi Yoshizawa
  • Publication number: 20110134179
    Abstract: An inkjet recording apparatus is presented. The inkjet recording apparatus includes an ink head configured to move in left and right directions, comprising a plurality of nozzles arranged in a front-rear direction for discharging ink on a recording medium, wherein the ink is curable when irradiated with light from a first light emitting device or a second light emitting device, and a conveyor device configured to feed the recording medium in a direction, wherein the first light emitting device is configured to move integrally with the ink head and to apply light to the recording medium, and wherein the second light emitting device, disposed offset from the plurality of nozzles in the front-rear direction, is configured to turn on independent of the first light emitting device and to apply light to the recording medium.
    Type: Application
    Filed: June 3, 2009
    Publication date: June 9, 2011
    Inventors: Tadakazu Otsuka, Fumiyoshi Yoshizawa