Patents by Inventor Spencer C. Anderson

Spencer C. Anderson 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).

  • Printing system and related methods
    Patent number: 8814319
    Abstract: In one embodiment, a printing system includes a printhead module that has a printhead and a regulator chamber. The regulator chamber contains ink and a regulator air bag. The regulator air bag and the printhead are in fluid communication with the ink, and the printhead includes a plurality of ejection nozzles. The printing system includes a pressure source to inflate the air bag, thereby displacing an amount of ink sufficient to agitate menisci in the ejection nozzles without pushing ink out of the nozzles.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: August 26, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Hector Jose Lebron, Spencer C. Anderson
  • PRINTING SYSTEM AND RELATED METHODS
    Publication number: 20130314465
    Abstract: In one embodiment, a printing system includes a printhead module that has a printhead and a regulator chamber. The regulator chamber contains ink and a regulator air bag. The regulator air bag and the printhead are in fluid communication with the ink, and the printhead includes a plurality of ejection nozzles. The printing system includes a pressure source to inflate the air bag, thereby displacing an amount of ink sufficient to agitate menisci in the ejection nozzles without pushing ink out of the nozzles.
    Type: Application
    Filed: February 25, 2011
    Publication date: November 28, 2013
    Inventors: Hector Jose Lebron, Spencer C. Anderson