Patents by Inventor Lee R. Brown

Lee R. Brown 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).

  • Electrographic recording apparatus and method
    Patent number: 4248521
    Abstract: An improved electrographic recording apparatus and method. An electrographic recording medium has a charge retaining front surface on which charge is distributed in a pattern representing a desired image to be recorded, and a field permeable conductive layer. While charge is being deposited on the charge retaining surface of the electrographic medium, a field is established and maintained behind the rear surface of the medium, said field penetrating the conductive layer and having a field strength on the charged side of the medium that opposes a field that causes charge to be deposited on the charge retaining surface of the medium. In another aspect of this invention, the recording apparatus has a toner application station that is located apart from the charge depositing means, and a second field, having the same polarity as the first field, is established and maintained behind the rear surface of the electrographic medium at the toner station.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: February 3, 1981
    Assignees: James River Graphics Inc., SIE Incorporated
    Inventors: Lee R. Brown, Jose L. Herrera, John D. Plumadore
  • Electrographic recording method of applying an electric field opposite the charge retaining layer
    Patent number: 4195991
    Abstract: An improved electrographic recording apparatus and method. An electrographic recording medium has a charge retaining front surface on which charge is distributed in a pattern representing a desired image to be recorded, and a field permeable conductive layer. While charge is being deposited on the charge retaining surface of the electrographic medium, a field is established and maintained behind the rear surface of the medium, said field penetrating the conductive layer and having a field strength on the charged side of the medium that opposes a field that causes charge to be deposited on the charge retaining surface of the medium. In another aspect of this invention, the recording apparatus has a toner application station that is located apart from the charge depositing means, and a second field, having the same polarity as the first field, is established and maintained behind the rear surface of the electrographic medium at the toner station.
    Type: Grant
    Filed: October 21, 1977
    Date of Patent: April 1, 1980
    Assignee: James River Graphics Inc.
    Inventors: Lee R. Brown, L. Herrera Jose, John D. Plumadore