Method for verifying authenticity of printed records

Details Method for verifying authenticity of printed records Method for verifying authenticity of printed records

B - Operations, Transporting

41

M

B41M 3/14 (2006.01) B41M 7/00 (2006.01)

Patent

CA 2138660

A method for verifying the authenticity of a sales record. A printer ribbon with an ink applied thereto is provided, the ink having a first color and being capable of changing to a second color when acted upon by a reagent. The printer ribbon is utilized to print sales records, with the authenticity of said sales records being verified by exposing the sales records to a reagent capable of causing the ink to change to a second color identifiably distinct from the first color.

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