FIELD: special types of printed products.
SUBSTANCE: invention relates to protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction.
EFFECT: in particular, the invention relates to a method for freezing the orientation of orientable magnetic or magnetisable pigment particles by irradiation hardening the coating layer comprising the orientable magnetic or magnetisable pigment particles through the substrate carrying the coating layer.
21 cl, 11 dwg, 1 tbl
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Authors
Dates
2019-03-12—Published
2015-07-09—Filed