Patents by Inventor Junhua Chaug

Junhua Chaug 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 jetting apparatus
    Patent number: 6572210
    Abstract: A liquid jetting apparatus of the invention includes a head having a nozzle, a pressure-changing unit for causing pressure of liquid in the nozzle to change in such a manner that the liquid is jetted from the nozzle, and a jetting-mode setting unit for setting a selected jetting mode from a plurality of jetting modes. A level-data setting unit sets a selected level data from a plurality of level data, based on a jetting data. A driving-signal generator generates a driving signal, based on the selected jetting mode. A driving-pulse generator generates a driving pulse based on the selected level data and the driving signal. A main controller causes the pressure-changing unit to operate, based on the driving pulse. Driving pulses generated based on a selected jetting mode and respective selected level data are different from driving pulses generated based on another selected jetting mode and the respective selected level data.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: June 3, 2003
    Assignee: Seiko Epson Corporation
    Inventor: Junhua Chaug
  • Liquid jetting apparatus
    Patent number: 6517176
    Abstract: A liquid jetting apparatus of the invention includes a head having a nozzle, a pressure-changing unit for causing pressure of liquid in the nozzle to change in such a manner that the liquid is jetted from the nozzle, and a jetting-mode setting unit for setting a selected jetting mode from a plurality of jetting modes. A level-data setting unit sets a selected level data from a plurality of level data, based on a jetting data. A driving-signal generator generates a driving signal, based on the selected jetting mode. A driving-pulse generator generates a driving pulse based on the selected level data and the driving signal. A main controller causes the pressure-changing unit to operate, based on the driving pulse. Driving pulses generated based on a selected jetting mode and respective selected level data are different from driving pulses generated based on another selected jetting mode and the respective selected level data.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: February 11, 2003
    Assignee: Seiko Epson Corporation
    Inventor: Junhua Chaug
  • Liquid jetting apparatus
    Publication number: 20020122085
    Abstract: A liquid jetting apparatus of the invention includes a head having a nozzle, a pressure-changing unit for causing pressure of liquid in the nozzle to change in such a manner that the liquid is jetted from the nozzle, and a jetting-mode setting unit for setting a selected jetting mode from a plurality of jetting modes. A level-data setting unit sets a selected level data from a plurality of level data, based on a jetting data. A driving-signal generator generates a driving signal, based on the selected jetting mode. A driving-pulse generator generates a driving pulse based on the selected level data and the driving signal. A main controller causes the pressure-changing unit to operate, based on the driving pulse. Driving pulses generated based on a selected jetting mode and respective selected level data are different from driving pulses generated based on another selected jetting mode and the respective selected level data.
    Type: Application
    Filed: April 30, 2002
    Publication date: September 5, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Junhua Chaug