Patents by Inventor Andrew Robert Lester

Andrew Robert Lester 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).

  • Inkjet printers
    Patent number: 9079414
    Abstract: The invention provides a method and system for determining fluid levels in an inkjet printer. A non-contact sensor array is provided external to the container in which the levels are to be determined and each sensor in the array is sequentially switched into a sensing circuit until a change in capacitance is noted. The sensing circuit is preferably a frequency oscillation circuit whose frequency is defined by circuit capacitance.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: July 14, 2015
    Assignee: Domino Printing Sciences PLC
    Inventors: Andrew Robert Lester, Adeyinka Opaleye, Matthew Henry Freeman
  • INKJET PRINTERS
    Publication number: 20130293624
    Abstract: The invention provides a method and system for determining fluid levels in an inkjet printer. A non-contact sensor array is provided external to the container in which the levels are to be determined and each sensor in the array is sequentially switched into a sensing circuit until a change in capacitance is noted. The sensing circuit is preferably a frequency oscillation circuit whose frequency is defined by circuit capacitance.
    Type: Application
    Filed: November 21, 2011
    Publication date: November 7, 2013
    Applicant: Domino Printing Sciences PLC
    Inventors: Andrew Robert Lester, Adeyinka Opaleye, Matthew Henry Freeman
  • CONTINUOUS INKJET PRINTERS
    Publication number: 20100165017
    Abstract: The invention provides a power-up/shut-down facility for a continuous inkjet printer which enables the printer to be readied for printing and returned to standby by operation of a single control.
    Type: Application
    Filed: October 26, 2007
    Publication date: July 1, 2010
    Inventors: Andrew Robert Lester, Anthony Davidson-Smith