Patents by Inventor William W. Pirtle

William W. Pirtle 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).

  • System for recording information on a photosensitive material
    Patent number: 4000495
    Abstract: A system for recording information on a photosensitive material comprising an array of light emitting diodes; fiber optic tubes, coupled between said light emitting diodes and the photosensitive material; and computer means for controlling the excitation of said array of light emitting diodes such that as said photosensitive material is passed by the output ends of said fiber optic tubes, information is recorded a line at a time. The system is further characterized in that the size of the light emitting diodes and the configuration of their array are independent of the spot size and configuration of the light pattern applied to photosensitive material, and by a simplified circuit arrangement for the timing control of the array of light emitting diodes.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: December 28, 1976
    Inventor: William W. Pirtle