Patents by Inventor Carol J. Panepinto

Carol J. Panepinto 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).

  • Automatic exposure correction using current sensing technology
    Patent number: 5623714
    Abstract: An image processing apparatus includes a corona device with a charging grid for charging a photoreceptor to voltage levels, an exposure device for projecting an image onto the photoreceptor, a developer for applying toner to the photoreceptor, and a sensor for providing a signal in relation to current flow between the photoreceptor and the developer. An exposure device control adjusts the exposure device by setting the exposure device to an intensity level of approximately 50%. A photodetector sensor provides signals to the exposure device control in relation to the 50% intensity level in response to developing the predetermined test patches on the photoreceptor and the exposure device control adjusts the exposure device in response to the photodetector sensor signals without the use of test patches to an intensity level of approximately 100%.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: April 22, 1997
    Assignee: Xerox Corporation
    Inventors: David M. Thompson, Carol J. Panepinto, Edward C. Savage
  • Xerographic process control using developer to photoreceptor current sensing for grid voltage adjust
    Patent number: 5416564
    Abstract: An image processing apparatus having a corona device for charging a photoreceptor to voltage levels, a developer for applying toner to the photoreceptor including a sensor for providing signals in relation to current flow between the photoreceptor and the developer as a result of the developer applying toner to the photoreceptor on predetermined patches, and a corona control responsive to the signals for adjusting the corona device for charging the photoreceptor to adjusted voltage levels.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: May 16, 1995
    Assignee: Xerox Corporatin
    Inventors: David M. Thompson, Carol J. Panepinto, Edward C. Savage
  • 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.