Patent ID: 7525705

Claim:
A method of forming a plurality of laminate patches in a demetallized holographic web, comprising the steps of: for each of the laminate patches, imparting a same holographic microstructure pattern to an oligomer disposed on a surface of a substrate; depositing a metal layer to said holographic microstructure patterns of said substrate to provide a metallized holographic web; applying a resist pattern to said metal layer of said metallized holographic web; and removing said metal layer not covered by said resist pattern so as to form a demetallized pattern on each of the holographic microstructure patterns whereby forming the plurality of laminate patches in the demetallized holographic web; wherein, the demetallized pattern includes a fixed demetallization pattern and a variable demetallization pattern; and, for any first and second of the laminate patches, the fixed demetallization pattern of the first laminate patch and the fixed demetallization pattern of the second laminate patch are a same pattern; and the variable demetallization pattern of the first laminate patch is different from the variable demetallization pattern of the second laminate patch.