Patents by Inventor Mikiya YAJIMA

Mikiya YAJIMA 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: 11813862
    Abstract: A liquid ejecting apparatus includes an ejection section that includes a nozzle which ejects a liquid, a pressure chamber which communicates with the nozzle, and a piezoelectric actuator which imparts a pressure fluctuation to the liquid in the pressure chamber, a drive waveform generation section that generates a drive waveform including a non-ejection vibration pulse which, when supplied to the piezoelectric actuator, imparts the pressure fluctuation to the liquid in the pressure chamber such that the liquid is not ejected from the nozzle and a control section that controls supply of the non-ejection vibration pulse to the piezoelectric actuator in accordance with a temperature of the liquid in the pressure chamber.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: November 14, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Mikiya Yajima, Shinichi Itaya
  • Publication number: 20220072856
    Abstract: A liquid ejecting apparatus includes an ejection section that includes a nozzle which ejects a liquid, a pressure chamber which communicates with the nozzle, and a piezoelectric actuator which imparts a pressure fluctuation to the liquid in the pressure chamber, a drive waveform generation section that generates a drive waveform including a non-ejection vibration pulse which, when supplied to the piezoelectric actuator, imparts the pressure fluctuation to the liquid in the pressure chamber such that the liquid is not ejected from the nozzle and a control section that controls supply of the non-ejection vibration pulse to the piezoelectric actuator in accordance with a temperature of the liquid in the pressure chamber.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventors: Mikiya YAJIMA, Shinichi ITAYA
  • Publication number: 20100149254
    Abstract: A liquid ejecting head including a plurality of nozzle groups, a plurality of reservoirs, each of which corresponds to each nozzle group, each reservoir having an introduction port, wherein the reservoirs include a first reservoir in which the introduction port is disposed in the center of the reservoir in the nozzle row direction and a second reservoir in which the introduction port offset from the center of the reservoir, and wherein a liquid having a pressure P comparatively higher than those of other liquids among plurality types of liquids ejected from the liquid ejecting head is introduced into the first reservoir.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Mikiya YAJIMA, Shinichi TSUBOTA