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Multilayer data carrier and a method for producing it

  • US 5,458,713 A
  • Filed: 08/20/1993
  • Issued: 10/17/1995
  • Est. Priority Date: 09/25/1991
  • Status: Expired due to Fees
First Claim
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1. A method of producing a data carrier having an optically variable element comprising the steps of:

  • providing a substrate with a first surface;

    changing the first surface of the substrate in a locally limited area to provide a structural inhomogeneity in the locally limited area, the structural inhomogeneity being produced by printing the substrate with a cover film filled with pigments to form a printed layer and then locally covering the printed layer with non-pigmented layers;

    applying the optically variable element onto the first surface of the substrate such that at least a part of the locally limited area lies beneath the optically variable plane element; and

    impressing at least a part of the locally limited area into the optically variable element so to impress the structural inhomogeneity into the optically variable element.

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