Patent ID: 9579922
Date: 2017-02-28
CPC Classifications: B41M,B42D,C09K,G07D,G09F

Claim:
1. A marking for an article, item or substrate, the marking comprising: a printable code, at least a part of the printable code is covered by a transparent intermediate layer including randomly distributed therein at least flakes comprising a chiral liquid crystal polymer (CLCP) material; a CLCP layer, the CLCP layer at least partially covering the transparent intermediate layer and at least partially covering the printable code; the CLCP material in the transparent intermediate layer has at least one optical property that is different from an optical property of the CLCP layer; and wherein the CLCP layer is made from a precursor composition that comprises at least one nematic compound, at least one chiral dopant, and at least one photoinitiator.