Patents by Inventor Robert S. Rizza

Robert S. Rizza 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).

  • Electrostatic cleaning of electrodes in an electrographic printer
    Patent number: 4862198
    Abstract: The print head of an electrographic printer is cleaned electrostatically. The printhead has a number of electrodes in an electrode array, which cooperate with a dielectric belt. Periodically, printing with the printer is interrupted (e.g. after every 100 pages of printing, or about every minute), and then substantially all of the electrodes are energized at the same time for a time period sufficient to effect burning off of contaminants from the electrodes (e.g. about the time it takes to print four pages, or about 3 seconds). A host computer controls the operation of the printer components. The printer developer unit may be moved away from the dielectric belt prior to the energization of all of the electrodes to effect cleaning.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: August 29, 1989
    Assignee: Moore Business Forms, Inc.
    Inventors: Robert S. Rizza, Ben W. Fagen, Jr., Michael W. Raymond, Peter Feher, Norman L. Milliard, Thomas B. Kegelman