METHOD FOR PRODUCING A SECURITY AND/OR VALUABLE PRODUCT WITH A RANDOM PATTERN AND A CORRELATED IDENTIFICATION CHARACTER SEQUENCE
The invention relates to a method for producing a security and/or valuable product comprising the following method steps: a substrate is coated with a marking layer containing at least two different particulate luminescent substances that emit light under different conditions of the excitation of lu...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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