Patents by Inventor Erich Waldherr Hacker

Erich Waldherr Hacker 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 with force control mode
    Patent number: 9649862
    Abstract: A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: May 16, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Luke P. Sosnowski, Pierre J. Kaiser, Alexander Toia, Arthur H. Barnes, Erich Waldherr Hacker
  • PRINTING SYSTEM WITH FORCE CONTROL MODE
    Publication number: 20160144639
    Abstract: A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.
    Type: Application
    Filed: July 23, 2015
    Publication date: May 26, 2016
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Luke P. Sosnowski, Pierre J. Kaiser, Alexander Toia, Arthur H. Barnes, Erich Waldherr Hacker
  • Printing system with force control mode
    Patent number: 9145011
    Abstract: A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 29, 2015
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Luke P. Sosnowski, Pierre J. Kaiser, Alexander Toia, Arthur H. Barnes, Erich Waldherr Hacker
  • PRINTING SYSTEM WITH FORCE CONTROL MODE
    Publication number: 20140210895
    Abstract: A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Luke P. Sosnowski, Pierre J. Kaiser, Alexander Toia, Arthur H. Barnes, Erich Waldherr Hacker