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SHADOW IMAGE SECURITY FEATURE

  • US 20110037247A1
  • Filed: 12/29/2008
  • Published: 02/17/2011
  • Est. Priority Date: 05/16/2008
  • Status: Active Grant
First Claim
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1. A process of creating a security document, comprising:

  • laminating a metalized foil between transparent layers;

    modifying the outside of the foil to form a base color of the document while leaving a window area formed by an unmodified portion of the foil; and

    using a laser to ablate at least a portion of the unmodified portion of the foil in the window area to create an image, the image being transparent, and the image is visible from a front of the security document and visible from a rear of the security document.

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