Patents by Inventor Sarah Ann Russell

Sarah Ann Russell 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).

  • Inhibiting ink flow streaks
    Patent number: 11016420
    Abstract: A technique includes rotating a squeegee roller to regulate a film thickness of ink on a developer roller; and using the developer roller to transfer a portion of the ink from the developer roller to a photoconductive member. The technique includes creating, by an electrode, a potential bias with the developer roller to transfer the ink to the developer roller; and inhibiting flow streaks on the developer roller, where inhibiting the flow streaks includes restricting a flow of ink between the squeegee roller and the electrode.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 25, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Sabo, Blair A. Butler, Jeffrey Zampell, Avinoam Halpern, Sarah Ann Russell
  • Print agent supply unit valve
    Patent number: 10908529
    Abstract: A print agent supply unit includes: an inlet chamber to distribute print agent within the print agent supply unit; a valve to selectively permit print agent into the inlet chamber, the valve including: a print agent inlet opening; and a valve member to selectively close the print agent inlet opening, the valve member being tapered towards an upstream end of the valve member.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: February 2, 2021
    Assignee: HP Indigo B.V.
    Inventors: Shachar Berger, Sagie Shanun, Ziv Yosef, Sarah Ann Russell, Eric G Nelson
  • INHIBITING INK FLOW STREAKS
    Publication number: 20200301316
    Abstract: A technique includes rotating a squeegee roller to regulate a film thickness of ink on a developer roller; and using the developer roller to transfer a portion of the ink from the developer roller to a photoconductive member. The technique includes creating, by an electrode, a potential bias with the developer roller to transfer the ink to the developer roller; and inhibiting flow streaks on the developer roller, where inhibiting the flow streaks includes restricting a flow of ink between the squeegee roller and the electrode.
    Type: Application
    Filed: December 15, 2017
    Publication date: September 24, 2020
    Inventors: David Sabo, Blair A. Butler, Jeffrey Zampell, Avinoam Halpern, Sarah Ann Russell
  • PRINT AGENT SUPPLY UNIT VALVE
    Publication number: 20200209783
    Abstract: A print agent supply unit comprising: an inlet chamber to distribute print agent within the print agent supply unit; a valve to selectively permit print agent into the inlet chamber, the valve comprising: a print agent inlet opening; and a valve member to selectively close the print agent inlet opening, the valve member being tapered towards an upstream end of the valve member.
    Type: Application
    Filed: September 21, 2017
    Publication date: July 2, 2020
    Inventors: Shachar Berger, Sagie Shanun, Ziv Yosef, Sarah Ann Russell, Eric G. Nelson