Documents embossed with optical markings representing genuinenes

Details Documents embossed with optical markings representing genuinenes Documents embossed with optical markings representing genuinenes

1978-09-01

1980-01-22

McQuade, John

Printed matter

Calendar

283 7, 283 11, 283 17, B32B 330, B42D 1500

Patent

active

041847008

ABSTRACT:
There is disclosed a document comprising a flat support member of non-thermoplastic material at least partly coated with a thermoplastic coating, in which coating are embossed optical markings having a light-modifying relief structure, said markings representing information indicating the genuineness or identity of the document. There is also disclosed a process for producing such a document, and an embossing die for use in such a process.

REFERENCES:
patent: 3055117 (1962-09-01), Bernstein
patent: 3412493 (1968-11-01), French
patent: 3465627 (1969-09-01), Vigneault
patent: 3497576 (1970-02-01), Dvorin
patent: 3643216 (1972-02-01), Greenaway
patent: 3814904 (1974-06-01), Russell et al.
patent: 3887742 (1975-06-01), Reinnagel
patent: 4011435 (1977-03-01), Phelps et al.
patent: 4020278 (1977-04-01), Carre et al.

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