Patents by Inventor John David Pockett

John David Pockett 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).

  • Method and apparatus for electronically printing on a substrate without a conductive around plane utilizing a donor roller for applying toner
    Patent number: 6011569
    Abstract: A method and apparatus for electronic printing onto a transparent, translucent or opaque substrate. The substrate is of a type which will support an electrostatic image on a surface thereof and which does not have a conductive ground plane affixed to or deposited on its rear surface. The method includes the steps of applying a selected charge pattern to the surface of the substrate to form an electrostatic latent image thereon, applying an electrostatic toner to the surface via a donor member to provide a toner image thereon and fixing the toner. The apparatus includes a charging arrangement to deposit a selected charge pattern onto a surface of the substrate, a donor member arrangement to transfer toner from a toner source to the surface of the substrate and a fixer arrangement to fix the toner to the surface of the substrate.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: January 4, 2000
    Assignee: Dainippon Ink and Chemicals Inc.
    Inventor: John David Pockett