Documents embossed with optical markings representing genuineness information
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United States of America Patent
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-
Jan 22, 1980
Issued Date -
N/A
app pub date -
Sep 1, 1978
filing date -
Nov 17, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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