Patents Assigned to Micr-Shield Co.
  • Method of correcting erroneously encoded optical character recognition encoding
    Patent number: 4249072
    Abstract: A method for correcting erroneously encoded optical character recognition indicia through the application of a solution containing ferric chloride to the erroneously encoded indicia to effectively quench the florescense of the indicia when excited by ultraviolet light. The solution is permitted to dry and new ultraviolet excitable ink is utilized to re-encode the document over the quenched erroneously encoded indicia.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: February 3, 1981
    Assignee: Micr-Shield Co.
    Inventor: William B. Buros