Patents by Inventor Robert E. Rosdahl, Jr.

Robert E. Rosdahl, Jr. 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).

  • SYSTEM FOR INK REMOVAL FROM A PRINTHEAD ASSEMBLY
    Publication number: 20130100203
    Abstract: A printhead cleaning device includes a housing having an opening and an ink receptacle positioned within the opening. A member extends from the ink receptacle and through the opening. The member is configured to contact a faceplate of a printhead to enable liquid ink emitted onto the faceplate to move from across the member into the ink receptacle.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: Xerox Corporation
    Inventors: Robert E. Rosdahl, JR., Michael Quoc Lu, John R. Uchal, Michael J. Severn
  • INTERDOCUMENT PHOTORECEPTOR SIGNAL SENSING AND FEEDBACK CONTROL OF PAPER EDGE GHOSTING
    Publication number: 20120183316
    Abstract: Apparatus and method for minimizing ghost defect are disclosed. Ghosting results in interdocument bands when paper size is changed and process control instability due to using the interdocument zone (IDZ) for voltage and density control. A controller retrieves feedback measurements of the IDZ and sheet zone (SZ) non-uniformity. In response to the measurements, the transfer current IDZ level is controlled to minimize differences in subsequent charging, photodischarge and development.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Charles H. Tabb, Eliud Robles-Flores, Moritz P. Wagner, Jyothsna Ram, Michael J. Turan, Robert E. Rosdahl, JR.
  • Toner mass sensing precision by normalization to substrate reflectance and adjusted for toner mass level
    Patent number: 8150653
    Abstract: A method of normalizing sensor readings includes receiving a reading from a sensor configured to detect light reflected from a substrate; and normalizing the sensor reading based on a function of sensed mass level on the substrate. A processor for implementing the method is also provided.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: April 3, 2012
    Assignee: Xerox Corporation
    Inventors: Aaron Michael Burry, Eric Michael Gross, Palghat Ramesh, Robert E. Rosdahl, Jr.
  • TONER MASS SENSING PRECISION BY NORMALIZATION TO SUBSTRATE REFLECTANCE AND ADJUSTED FOR TONER MASS LEVEL
    Publication number: 20110040524
    Abstract: A method of normalizing sensor readings includes receiving a reading from a sensor configured to detect light reflected from a substrate; and normalizing the sensor reading based on a function of sensed mass level on the substrate. A processor for implementing the method is also provided.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 17, 2011
    Applicant: XEROX CORPORATION
    Inventors: Aaron Michael BURRY, Eric Michael Gross, Palghat Ramesh, Robert E. Rosdahl, JR.
  • Reduction of electrostatic charge in waste bottle
    Patent number: 5888276
    Abstract: An apparatus for reducing electrostatic charge of particles in a waste container. In one embodiment the waste container is coated with a liquid having a viscosity sufficient to prevent tribocharging between the waste container and the waster toner particles, and to collect toner particles deposited from the cyclone separator into the waste container. Another embodiment describes the use of a flange extending into the waste container to prevent tribocharging that can cause explosions in the waste toner bottle.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: March 30, 1999
    Assignee: Xerox Corporation
    Inventors: Michael J. Price, Andrew T. McKenna, Bruce J. Parks, Robert E. Rosdahl, Jr., Douglas A. Lundy
  • Stretchable cleaner band disturber
    Patent number: 5210582
    Abstract: A cleaner band stretchably disposed, across the imaging surface width, between two rotating cleaner brushes. The cleaner band is slightly off center and down process from the brush backup roll. The cleaner band acts as a disturber for dislodging large agglomerate residual particles from the imaging surface.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: May 11, 1993
    Assignee: Xerox Corporation
    Inventors: Douglas A. Lundy, Kenneth S. Palumbo, Robert E. Rosdahl, Jr.