Patents by Inventor John W. Trainor

John W. Trainor 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).

  • Patent number: 7503258
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt, contacting the heated photosensitive element with a development medium to absorb the liquefied portion at a contact location, and removing the development medium from the photosensitive element with a remover at a location away from the contact location.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: March 17, 2009
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Robert A. McMillen, Dietmar Dudek, Mark A. Hackler, Anandkumar R. Kannurpatti, John W. Trainor, Jr.
  • Patent number: 5053825
    Abstract: This invention relates to an toner cartridge to dispense toner to a developing system in a photocopying device. The cartridge has a primary baffle thereby forming a main chamber and a dispensing chamber. The dispensing chamber is divided into a primary dispensing chamber and a secondary dispensing chamber by a secondary baffle. Apertures are formed in the container adjacent to the secondary dispensing baffle. The cartridge is designed to be rotated in one direction to fill the secondary dispensing chamber with toner, and then rotated in an opposite direction to dispense the toner from the secondary dispensing chamber through the apertures.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: October 1, 1991
    Assignee: Imagitek, Inc.
    Inventors: John W. Trainor, Bruce E. Holtje, Laura M. Gilbert
  • Patent number: 4959690
    Abstract: This invention relates to a cross-mixer for a developer system of a photocopier, particularly one with a two component development system, which mixes the developer mixture (1) to assure uniform lateral distribution of the toner, (2) to assure uniform concentration of the toner mixture and (3) to triboelectrically charge the developer mixture.Adjacently offset rows of V-shaped baffles successively divide and intermix the developer mixture. Angled lifting plates interposed between successive rows of baffles scoop and lift the mixture so as to triboelectrically charge the same.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: September 25, 1990
    Assignee: Imagitek, Inc.
    Inventors: John W. Trainor, Bruce E. Holtje
  • Patent number: 4869401
    Abstract: A cartridge dispenser for dispensing toner through the use of a plurality of baffles positioned within the cartridge which serve to collect a prescribed amount of toner and dispense it during different strokes of oscillation of the cartridge.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: September 26, 1989
    Assignee: Imagitek
    Inventors: Bruce E. Holtte, John W. Trainor
  • Patent number: 4046473
    Abstract: In a photoreceptor method and assembly for a photocopy apparatus of the type employing a flexible endless photoreceptor belt, a shuttle mechanism is located between the imaging and processing stations of the photocopy apparatus which simultaneously stores and dispenses portions of the photoreceptor belt to enable the photoreceptor belt to be stopped at the imaging station during imaging and then rapidly removed from that station at high velocity after imaging is completed, while the velocity of the photoreceptor belt at the processing station may be maintained substantially constant.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: September 6, 1977
    Assignee: Xerox Corporation
    Inventor: John W. Trainor
  • Patent number: 3994000
    Abstract: Apparatus and method for converting an optical image into an electrostatic image replica. A vacuum tube device includes a source of electrons for propagating electrons toward an array of conductors coupling an interior surface of the vacuum tube device with an exterior surface. The accumulation of electrons on the conductor array produces an electrostatic image. The electrostatic image is determined by modulating a diffuse beam of electrons by means of the charge stored on a control grid. The charge stored on the control grid is established by secondary emission of electrons from an insulating material associated with the control grid. The electrons producing the secondary emission from the control grid originate from a photoemissive cathode are produced by the photoemissive cathode in response to an optical image applied to the cathode. The optical image applied to the photoemissive cathode is the image for which an electrostatic replica is desired.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: November 23, 1976
    Assignee: Xerox Corporation
    Inventors: John W. Trainor, David W. Meltzer
  • Patent number: 3984842
    Abstract: Apparatus and method for continuously converting an optical image into an electrostatic image. A vacuum tube device has a source of electrons and associated elements for propagating electronic charge toward an array of conductors coupling an interior surface of the vacuum tube device with an exterior surface of the device. The array of conductors has an extent substantially greater in a first dimension as compared to a second dimension. A photosensitive electrode, interposed between the electron source and the array of conductors modulates the passage of electrons from the source to the array. The modulation results from the presence of stored electronic charge on the electrode, the stored charge of local portion of electrode controlling the passage of electrons through apertures associated with the local portion of the electrode. The charge distribution on the photosensitive electrode can be determined by an optical image, applied to the electrode under appropriate conditions.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: October 5, 1976
    Assignee: Xerox Corporation
    Inventors: David W. Meltzer, John W. Trainor