Patents by Inventor Marco Guzman

Marco Guzman 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).

  • Replaceable developer roller
    Patent number: 7221889
    Abstract: A replaceable developer roller apparatus is disclosed for a printing device. The apparatus includes a cylindrical developer roller having two opposed ends, and a drive assembly selectively and operatively engageable with one of the opposed ends of the developer roller. The drive assembly includes a shaft having two opposed regions; a gear rotationally fixed to one of the opposed regions of the shaft; and a drive member rotationally fixed to the other of the opposed regions of the shaft, and selectively, axially moveable between an engagement position and a disengagement position. A spindle assembly is engageable with the other of the opposed ends of the developer roller. The spindle assembly includes a spindle assembly shaft and an alignment member rotationally fixed to the spindle assembly shaft.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: May 22, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: M. Derek Patton, Ziv Gilan, Christopher S. Tanner, Marco Guzman
  • Replaceable developer roller
    Publication number: 20060204275
    Abstract: A replaceable developer roller apparatus is disclosed for a printing device. The apparatus includes a cylindrical developer roller having two opposed ends, and a drive assembly selectively and operatively engageable with one of the opposed ends of the developer roller. The drive assembly includes a shaft having two opposed regions; a gear rotationally fixed to one of the opposed regions of the shaft; and a drive member rotationally fixed to the other of the opposed regions of the shaft, and selectively, axially moveable between an engagement position and a disengagement position. A spindle assembly is engageable with the other of the opposed ends of the developer roller. The spindle assembly includes a spindle assembly shaft and an alignment member rotationally fixed to the spindle assembly shaft.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 14, 2006
    Inventors: M. Patton, Ziv Gilan, Christopher Tanner, Marco Guzman
  • Ink developer foil
    Publication number: 20060153597
    Abstract: In one implementation, an apparatus includes a foil that is adjacent to a portion of an ink developer electrode. The foil at least partially limits an accumulation of splashed ink along one or more portions of the ink developer electrode.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 13, 2006
    Inventors: Marco Guzman, Ziv Gilan, Christopher Tanner