Covert variable information on ID documents and methods of making same
First Claim
Patent Images
1. A method for manufacturing an identification document, comprising:
- providing a thermal transfer printing medium comprising a first panel, the first panel comprising a color component that is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light; and
applying heat to a portion of the first panel so as to form a first variable indicium on a substrate, where the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using the first type of light.
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Abstract
In one embodiment, a method for manufacturing an identification document is provided. The method includes: providing a substrate constructed and arranged to receive printing thereon; printing a first variable indicium on the substrate, where the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light; and printing a second variable indicium on the substrate, the second variable indicium being visible when viewed using ambient light. Other methods, systems and documents are provided as well.
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Citations
20 Claims
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1. A method for manufacturing an identification document, comprising:
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providing a thermal transfer printing medium comprising a first panel, the first panel comprising a color component that is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light; and
applying heat to a portion of the first panel so as to form a first variable indicium on a substrate, where the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using the first type of light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An identification document, comprising:
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a substrate; and
a first variable indicium printed to the substrate using a thermal transfer printing medium comprising a first panel, the first panel comprising a color component that is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light, wherein the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using the first type of light. - View Dependent Claims (16, 17)
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18. A method for manufacturing an identification document, comprising:
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providing a substrate constructed and arranged to receive printing thereon;
printing a first variable indicium on the substrate, where the first variable indicium is not visible to the human eye in ambient light but is visible to the human eye when viewed using a first type of light; and
printing a second variable indicium on the substrate, the second variable indicium being visible when viewed using ambient light. - View Dependent Claims (20)
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19. The method of claim 19 wherein the first variable indicium is at least partially superimposed over the second variable indicium.
Specification