Patents by Inventor Robert James Greasty

Robert James Greasty 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).

  • Method of operating an inkjet printhead
    Patent number: 11148423
    Abstract: A method of operating an electrostatic ink jet printhead, the printhead comprising: one or more ejection tips from which, in use, ink is ejected, the one or more ejection tips defining a tip region; a printhead housing, the printhead housing defining a cavity in which the one or more ejection tips are located; the method comprising the steps of, during a printing operation, passing a vapour into the cavity to reduce evaporation of ink in the tip region.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 19, 2021
    Assignee: Tonejet Limited
    Inventors: Andrew John Clippingdale, Robert James Greasty, Jonathan James Michael Halls
  • METHOD OF OPERATING AN INKJET PRINTHEAD
    Publication number: 20180281419
    Abstract: A method of operating an electrostatic ink jet printhead, the printhead comprising: one or more ejection tips from which, in use, ink is ejected, the one or more ejection tips defining a tip region; a printhead housing, the printhead housing defining a cavity in which the one or more ejection tips are located; the method comprising the steps of, during a printing operation, passing a vapour into the cavity to reduce evaporation of ink in the tip region.
    Type: Application
    Filed: September 2, 2016
    Publication date: October 4, 2018
    Inventors: Andrew John Clippingdale, Robert James Greasty, Jonathan James Michael Halls