Patents by Inventor Masahiko YOSHIDO

Masahiko YOSHIDO 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).

  • Liquid ejecting apparatus, inspection method, and program
    Patent number: 8857948
    Abstract: A liquid ejecting apparatus includes a head having a first ejecting unit including a first liquid ejecting nozzle, a first pressure chamber communicating with the nozzle, and a first drive element, and a second ejecting unit including a second liquid ejecting nozzle, a second pressure chamber communicating with the nozzle, and a second drive element. The first nozzle ejects liquid by applying a drive signal to the first drive element, and the second nozzle ejects liquid by applying the drive signal to the second drive element. The first nozzle state is determined using a first detection signal obtained by applying a first drive signal to the first drive element and a second drive signal to the second drive element, and a second detection signal obtained by applying the first drive signal to the first drive element and a third drive signal to the second drive element.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: October 14, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Toshiyuki Suzuki, Osamu Shinakawa, Masahiko Yoshido
  • LIQUID EJECTING APPARATUS, INSPECTION METHOD, AND PROGRAM
    Publication number: 20130293610
    Abstract: A liquid ejecting apparatus includes a head having a first ejecting unit including a first liquid ejecting nozzle, a first pressure chamber communicating with the nozzle, and a first drive element, and a second ejecting unit including a second liquid ejecting nozzle, a second pressure chamber communicating with the nozzle, and a second drive element. The first nozzle ejects liquid by applying a drive signal to the first drive element, and the second nozzle ejects liquid by applying the drive signal to the second drive element. The first nozzle state is determined using a first detection signal obtained by applying a first drive signal to the first drive element and a second drive signal to the second drive element, and a second detection signal obtained by applying the first drive signal to the first drive element and a third drive signal to the second drive element.
    Type: Application
    Filed: March 27, 2013
    Publication date: November 7, 2013
    Applicant: Seiko Epson Corporation
    Inventors: Toshiyuki SUZUKI, Osamu SHINKAWA, Masahiko YOSHIDO