Patents by Inventor Earl Wesley Stapleton

Earl Wesley Stapleton 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).

  • Thermal printing head
    Patent number: 4037315
    Abstract: A row of thick-film resistors connected by thick-film conductors on a ceramic substrate are suitably powered to form a thermal printing head. Thermally-sensitive paper is placed in intimate contact with the resistors, some of which are heated to a temperature sufficient to cause a color change in the paper to thereby produce a corresponding array of dots. The paper is moved across the printing head in incremental steps, forming other arrays of dots. The dots combine to form alphanumeric characters.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: July 26, 1977
    Assignee: Tektronix, Inc.
    Inventors: Earl Wesley Stapleton, Patricia Ann McLaughlin, Jerry Edwin Turnbaugh