Patents by Inventor Tasuku Yonehara

Tasuku Yonehara 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: 10611145
    Abstract: A liquid jet head includes a plurality of nozzles adapted to jet liquid, a piezoelectric actuator having a plurality of pressure chambers communicated individually with the nozzles and each filled with the liquid, and adapted to change a capacity of each of the pressure chambers, and a control section adapted to apply at least one pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chambers to jet the liquid filling the pressure chamber. The pressure chambers adjacent to each other of the plurality of the pressure chambers are set so as to belong to a plurality of groups different from each other. The control section makes the pulse signals different in timing between the plurality of groups and sets a shift amount of the timing in the pulse signals between the respective groups.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: April 7, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Tasuku Yonehara, Yuki Yamamura
  • Publication number: 20190184699
    Abstract: There are provided a liquid jet head, a liquid jet recording device, a method for driving the liquid jet head, and a program for driving the liquid jet head each capable of improving the printed image quality. The liquid jet head according to an embodiment of the present disclosure is provided with a plurality of nozzles adapted to jet liquid, a piezoelectric actuator having a plurality of pressure chambers communicated individually with the nozzles and each filled with the liquid, and adapted to change a capacity of each of the pressure chambers, and a control section adapted to apply at least one pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chambers to jet the liquid filling the pressure chamber. The pressure chambers adjacent to each other of the plurality of the pressure chambers are set so as to belong to a plurality of groups different from each other.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 20, 2019
    Inventors: Tasuku Yonehara, Yuki Yamamura