Patents by Inventor Kenneth Archibald Metcalfe

Kenneth Archibald Metcalfe 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 offset printing
    Patent number: 3946671
    Abstract: A method of printing comprising applying a conductive developer to a imaged dielectric surface in the presence of an energising electrical image-defining field to form a master having conductive and relatively insulating areas defining the image, inking the said surface in the presence of a field of a polarity to urge the ink on to the surface to retain it at the relatively insulating image areas, and transferring the ink from the said surface to a receiving surface in the presence of a field of a polarity to urge the ink on to the receiving surface, and continuing inking the said master and transferring the ink to further receiving sheets.
    Type: Grant
    Filed: September 26, 1973
    Date of Patent: March 30, 1976
    Assignee: The Commonwealth of Australia
    Inventors: Kenneth Archibald Metcalfe, Clive Westgarth Wilson