Patents by Inventor Fusa Nakayama

Fusa Nakayama 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 delivery head, liquid delivery device, and liquid delivery head driving method
    Patent number: 7240989
    Abstract: The present invention is applied to a printer that discharges ink drops by driving, for example, heater elements. In the case where a plurality of variable pressure generator elements are driven to control the direction in which the drop is discharged, the present invention makes it possible to lay out drive circuits and so on efficiently so as to arrange nozzles in a high density. According to the present invention, in the case where a plurality of variable pressure generator elements 15A and 15B are provided for a liquid chamber, and are controlled to control the direction in which the drop is discharged, a sub-control circuit 31 varies the balance between the variable pressure generator elements 15A and 15B driven by a main control circuit 27. Since the current concerning the sub-control circuit 31 is small, the wiring pattern concerning the sub-control circuit 31 is formed in a narrow width.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: July 10, 2007
    Assignee: Sony Corporation
    Inventors: Manabu Tomita, Iwao Ushinohama, Takeo Eguchi, Fusa Nakayama
  • Liquid delivery head, liquid delivery device, and liquid delivery head driving method
    Publication number: 20050225582
    Abstract: The present invention is applied to a printer that discharges ink drops by driving, for example, heater elements. In the case where a plurality of variable pressure generator elements are driven to control the direction in which the drop is discharged, the present invention makes it possible to lay out drive circuits and so on efficiently so as to arrange nozzles in a high density. According to the present invention, in the case where a plurality of variable pressure generator elements 15A and 15B are provided for a liquid chamber, and are controlled to control the direction in which the drop is discharged, a sub-control circuit 31 varies the balance between the variable pressure generator elements 15A and 15B driven by a main control circuit 27. Since the current concerning the sub-control circuit 31 is small, the wiring pattern concerning the sub-control circuit 31 is formed in a narrow width.
    Type: Application
    Filed: February 25, 2004
    Publication date: October 13, 2005
    Inventors: Manabu Tomita, Iwao Ushinohama, Takeo Eguchi, Fusa Nakayama