Patents by Inventor John M. Magde, Jr.

John M. Magde, 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).

  • Enhancing adhesion of organic electrostatographic imaging member overcoat and anticurl backing layers
    Patent number: 6528226
    Abstract: A process for preparing an imaging member includes applying an organic layer to an imaging member substrate, treating the organic layer and/or a backside of the substrate with a corona discharge effluent, and applying an overcoating layer to the organic layer and/or an anticurl backing layer to the backside of the substrate.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: March 4, 2003
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Satchidanand Mishra, Philip G. Perry, Robert W. Nolley, Gene W. O'Dell, Merlin E. Scharfe, John M. Magde, Jr.
  • Xerographic process control by adjusting photoreceptor voltages by photoreceptor segments
    Patent number: 5416563
    Abstract: An image processing apparatus having a corona device with a charging grid for charging a photoreceptor to voltage levels, a developer for applying toner to the photoreceptor, and a corona control responsive to the signal for charging the photoreceptor by adjusting the photoreceptor voltage levels in relation to discrete photoreceptor segments. The adjustment of voltage levels is done by providing signals from a sensor in response to developing a series of test patches on the photoreceptor, relating the signals from the sensor to a given test patch, associating each of the test patches to a given segment of the photoreceptor, and adjusting the charging grid to a given voltage for each segment of the photoreceptor in response to the signals from the test patches on the photoreceptor.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: May 16, 1995
    Assignee: Xerox Corporation
    Inventor: John M. Magde, Jr.
  • Xerographic process control using periodic electrostatic set up to automatically adjust charging potential
    Patent number: 5383005
    Abstract: An image processing apparatus having a corona device for charging a photoreceptor to voltage levels, a developer for applying toner to the photoreceptor, and a sensor for providing a signal in relation to photoreceptor voltage for adjusting the photoreceptor voltage levels by providing signals from the sensor in response to periodic electrostatic set ups which includes developing a series of predetermined test patches on the photoreceptor, relating the signals to characteristics of the photoreceptor, adjusting the corona device for the characteristics in response to the signals, and measuring cycle down and short term photoreceptor rest recovery changes in photoreceptor voltage for use in adjusting the corona device.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: January 17, 1995
    Assignee: Xerox Corporation
    Inventors: David M. Thompson, Carol J. Panepinto, Edward C. Savage, John M. Magde, Jr.
  • Method and apparatus for background control in an electrostatographic printing machine
    Patent number: 5363174
    Abstract: A method and apparatus for determining the presence of image information in the lead edge of an input document by comparing the average difference between a plurality of instantaneous optical density measurements of a reference strip and the average optical density for the reference strip to the average difference between a plurality of instantaneous optical density measurements of a lead edge of an original input document and the average optical density for the lead edge of the original input document. Analysis of optical density measurements during scanning of the lead edge of an original input document is accomplished so that image information on the lead edge of an original input document is not misinterpreted as indicative of a dark background original input document.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: November 8, 1994
    Assignee: Xerox Corporation
    Inventors: John M. Magde, Jr., Thomas F. Szlucha