Documents embossed with machine-readable information by means of an embossing foil
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United States of America Patent
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-
Feb 10, 1981
Grant Date -
N/A
app pub date -
Nov 1, 1976
filing date -
Nov 17, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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