Documents embossed with machine-readable information by means of

Details Documents embossed with machine-readable information by means of Documents embossed with machine-readable information by means of

1976-11-01

1981-02-10

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

101 32, 156221, 156230, 350168, 428172, 428179, 428916, 427162, 427276, B32B 328, B32B 2710

Patent

active

042502179

ABSTRACT:
There is described a process for embossing onto a document machine-readable information in the form of optical markings with a light-modifying relief structure for indicating the genuineness of the document, comprising transferring a thermoplastic layer to the document from an embossing foil by means of a hot embossing die, and simultaneously embossing the optical markings in at least the thermoplastic layer. Also described are embossed documents produced by the disclosed process.

REFERENCES:
patent: 1996539 (1935-04-01), Dufay
patent: 2205466 (1940-06-01), Caprio et al.
patent: 3497576 (1970-02-01), Dvorin
patent: 3594245 (1971-07-01), Hayes
patent: 3930924 (1976-01-01), Oka et al.
patent: 4033059 (1977-07-01), Hutton et al.

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