Patents by Inventor Thomas M. Twigg

Thomas M. Twigg 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).

  • Fluid-ejection device having rollers
    Patent number: 8052272
    Abstract: A first roller has a first roller center line; a second roller has a second roller center line. Fluid-ejection mechanisms eject fluid onto the media as the media is rolled past the rollers, and include first mechanisms and second mechanisms. The first mechanisms include first and second printheads, at least substantially equally between which a first positioning line is defined. The second mechanisms include third and fourth printheads, at least substantially equally between which a second positioning line is defined. The fluid-ejection mechanisms are disposed opposite to the roller and are positioned such that the first and second positioning lines are located between the first and second roller center lines, the first and the third printheads are not completely located between the first and the second roller center lines, and the second and the fourth printheads are completely located between the first and the second roller center lines.
    Type: Grant
    Filed: February 22, 2009
    Date of Patent: November 8, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David L. Smith, Timothy Jay Bouma, Thomas M. Twigg, George C. Ross
  • Fluid-ejection device having rollers
    Publication number: 20100214360
    Abstract: A first roller has a first roller center line; a second roller has a second roller center line. Fluid-ejection mechanisms eject fluid onto the media as the media is rolled past the rollers, and include first mechanisms and second mechanisms. The first mechanisms include first and second printheads, at least substantially equally between which a first positioning line is defined. The second mechanisms include third and fourth printheads, at least substantially equally between which a second positioning line is defined. The fluid-ejection mechanisms are disposed opposite to the roller and are positioned such that the first and second positioning lines are located between the first and second roller center lines, the first and the third printheads are not completely located between the first and the second roller center lines, and the second and the fourth printheads are completely located between the first and the second roller center lines.
    Type: Application
    Filed: February 22, 2009
    Publication date: August 26, 2010
    Inventors: David L. Smith, Timothy Jay Bouma, Thomas M. Twigg, George C. Ross