Method of marking for deterring fraud with valuable documents

Details Method of marking for deterring fraud with valuable documents Method of marking for deterring fraud with valuable documents

1985-09-05

1986-12-09

Bell, Paul A.

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing electromagnetic radiation

156277, 283 94, 283904, 427261, 428201, 428204, 428206, 428207, 428212, 428690, 428915, 428916, B42D 1500

Patent

active

046276424

ABSTRACT:
The present invention relates to a method for deterring fraud with documents having monetary value such as a PVC substrate having a signature location on the substrate. In the method, a supporting ink layer 2 including a pigment and containing a product that assures it a certain porosity with respect to the substrate is deposited on the signature location; then a transparent, porous varnish layer 3 including a dissolved powder enabling a fluorescence of the desired color to be obtained under ultraviolet light is deposited on certain zones of the first ink layer 2; next a filigree pattern is printed in zones of either the first ink layer 2 or the varnish layer 3, using a silkscreening process and a second pigmented vinyl ink 4. The signature or identifying mark of the owner of the document is executed using a felt-tip pen having an indelible ink, of the type which is indelible to a product such as that sold under the mark "CORRECTOR". This method makes it possible to reveal any attempt at fraud and makes unauthorized reproductions of the documents more difficult.

REFERENCES:
patent: 2984030 (1961-05-01), Hannon
patent: 3545380 (1970-12-01), Comegys et al.
patent: 3886083 (1975-05-01), Laxer
patent: 4006050 (1977-02-01), Hurst
patent: 4184701 (1980-01-01), Franklin et al.
patent: 4298217 (1983-11-01), Moraw et al.
patent: 4504083 (1985-03-01), Devrient et al.
patent: 4506915 (1985-03-01), Haghiri-Tehrani et al.

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