Patents by Inventor Michael J. Dahrea

Michael J. Dahrea 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).

  • Patent number: 7676177
    Abstract: In a printing apparatus having a rotatable imaging member and means for performing a selected one of a plurality of operations on a portion of the rotatable imaging member, a set of metaphorical bricks are used to schedule operations. For an operation of a first type, a first brick is scheduled, the first brick defining a time duration associated with the operation, and defining a first portion having a first height and a second portion having a second height. For an operation of a second type, a second brick is scheduled, the second brick defining at least one height and a time duration associated with the operation. A combined height of bricks scheduled over time is monitored.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: March 9, 2010
    Assignee: Xerox Corporation
    Inventors: Michael W. Elliot, Marc Palmaffy, Michael J. Dahrea, Stephen F. Randall
  • Patent number: 7555234
    Abstract: A method of operating a printing apparatus, the apparatus having a rotatable imaging member and an imaging station useful in creating printable images and test patches on the rotatable imaging member. Data is obtained relating to images desired to be printed in a time-frame corresponding to a predetermined number of rotations of the imaging member. A gap is identified in the time-frame corresponding to a location on the imaging member that is not occupied by an image desired to be printed within the time-frame. The identified gap is identified as suitable for receiving a test patch.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: June 30, 2009
    Assignee: Xerox Corporation
    Inventors: Michael W. Elliot, Michael J. Dahrea, Stephen F. Randall
  • Publication number: 20080292350
    Abstract: In a printing apparatus having a rotatable imaging member and means for performing a selected one of a plurality of operations on a portion of the rotatable imaging member, a set of metaphorical “bricks” are used to schedule operations. For an operation of a first type, a first brick is scheduled, the first brick defining a time duration associated with the operation, and defining a first portion having a first height and a second portion having a second height. For an operation of a second type, a second brick is scheduled, the second brick defining at least one height and a time duration associated with the operation. A combined height of bricks scheduled over time is monitored.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 27, 2008
    Inventors: Michael W. Elliot, Marc Palmaffy, Michael J. Dahrea, Stephen F. Randall
  • Patent number: 7418216
    Abstract: In a printing apparatus having a rotatable imaging member, a test patch is created in a predetermined area of the imaging member. A density of the test patch is measured at least a first time, corresponding to a first rotation of the imaging member. Based at least partially on the measuring of the density of the test patch at least a first time, how many rotations in the future the predetermined area of the imaging member will be available for receiving new marking material is predicted.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: August 26, 2008
    Assignee: Xerox Corporation
    Inventors: Michael W. Elliot, Stephen F. Randall, Michael J. Dahrea
  • Publication number: 20080063420
    Abstract: A method of operating a printing apparatus, the apparatus having a rotatable imaging member and an imaging station useful in creating printable images and test patches on the rotatable imaging member. Data is obtained relating to images desired to be printed in a time-frame corresponding to a predetermined number of rotations of the imaging member. A gap is identified in the time-frame corresponding to a location on the imaging member that is not occupied by an image desired to be printed within the time-frame. The identified gap is identified as suitable for receiving a test patch.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 13, 2008
    Inventors: Michael W. Elliot, Michael J. Dahrea, Stephen F. Randall
  • Publication number: 20080063417
    Abstract: In a printing apparatus having a rotatable imaging member, a test patch is created in a predetermined area of the imaging member. A density of the test patch is measured at least a first time, corresponding to a first rotation of the imaging member. Based at least partially on the measuring of the density of the test patch at least a first time, how many rotations in the future the predetermined area of the imaging member will be available for receiving new marking material is predicted.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 13, 2008
    Inventors: Michael W. Elliot, Stephen F. Randall, Michael J. Dahrea