Patents by Inventor William J. DeBonte

William J. DeBonte 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).

  • Impulse ink jet apparatus employing ink in solid state form
    Patent number: 5541624
    Abstract: A demand ink jet employs removable cartridges of hot melt ink. When the temperature of the ink within the cartridge is raised, the ink melts and drains from the cartridge into the supply system.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: July 30, 1996
    Assignee: Dataproducts Corporation
    Inventors: Theodore M. Cooke, William J. DeBonte
  • Method and apparatus for selective multi-resonant operation of an ink jet controlling dot size
    Patent number: 5202659
    Abstract: The volume of ink ejected from an ink jet printing apparatus during one cycle of operation for printing a dot upon a recording medium is controlled within that cycle of operation by operating the ink jet apparatus via the application of a pulse train having a periodicity equivalent to the dominant resonant frequency of the ink jet apparatus. An electrical signal in the form of an earlier pulse train is followed by at least one additional electrical signal or pulse having a time delay and an ink jet transducer is selectively gated on or off by the electrical signals.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: April 13, 1993
    Assignee: Dataproducts, Corporation
    Inventors: William J. DeBonte, Stephen J. Liker
  • Ink jet employing phase change ink and method of operation
    Patent number: 4631557
    Abstract: A demand ink jet employs removable cartridges of hot melt ink. When the temperature of the ink within the cartridge is raised, the ink melts and drains from the cartridge into the supply system. Each of the cartridges may include ink of a different color so as to permit multi-color printing.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: December 23, 1986
    Assignee: Exxon Printing Systems, Inc.
    Inventors: Theodore M. Cooke, William J. DeBonte
  • Phase change ink jet with independent heating of jet and reservoir
    Patent number: 4607266
    Abstract: An ink jet apparatus employing hot melt ink includes a reservoir which may be heated independently of the ink jet itself. This permits the reservoir to be heated when the apparatus is to operate in the ejection mode, so as to melt the ink into the liquid state in the reservoir. The reservoir may also be cooled so as to return the ink in the reservoir to the solid state in the stand-by mode while the ink in the jet remains in the liquid state at all times throughout the stand-by mode and the ejection mode.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: August 19, 1986
    Inventor: William J. DeBonte
  • Method and apparatus for tuning ink jets
    Patent number: 4366490
    Abstract: Portions of ink jet transducers are deactivated so as to tune the transducer to the transducer drive rather than vice versa. Deactivation may be accomplished by creating a discontinuity in a conductive coating on the transducer or by partially depoling the transducer.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: December 28, 1982
    Assignee: Exxon Research and Engineering Co.
    Inventors: William J. DeBonte, Karen Lynch