Patents Examined by Michael Sofocleous
  • Image intensification
    Patent number: 3949117
    Abstract: A process for enhancing the optical density of images and the product resulting therefrom. The process comprises forming on a shrinkable substrate an image defined by a plurality of particles and having substantially less than an optimum optical density, and then forming a reduced-size image having a substantially improved optical density by shrinking said substrate with said image thereon.
    Type: Grant
    Filed: January 23, 1974
    Date of Patent: April 6, 1976
    Assignee: Diagnostic Instruments, Inc.
    Inventors: Alex E. Jvirblis, Walter Roth, Murray Goodman
  • Liquid development process and apparatus for electrostatography
    Patent number: 3943268
    Abstract: Images are formed by transporting a recording surface bearing an electrostatic latent image adjacent to a spaced parallel surface of a development electrode and supplying a liquid developer between the recording surface and parallel surface of the development electrode at substantially the same velocity as the velocity of the recording surface.
    Type: Grant
    Filed: March 29, 1973
    Date of Patent: March 9, 1976
    Assignee: Xerox Corporation
    Inventor: Masamichi Sato
  • Copying using pyroelectric film
    Patent number: 3935327
    Abstract: A method is disclosed for copying a graphic representation using a uniformly poled pyroelectric material.The uniformly poled pyroelectric material is selectively heated to form a differential charge pattern on the material. The differentially charged material can be used with charged toner particles to form a copy of the graphic representation using techniques well known in the art.
    Type: Grant
    Filed: August 6, 1973
    Date of Patent: January 27, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Allen L. Taylor