Self-authenticating documents with printed or embossed hidden images
First Claim
1. A method of producing a self-authenticating article comprising:
- providing a document comprising a substrate having an image receiving surface and a decoder lens having a lens frequency and being configured for optically decoding corresponding encoded indicia viewed therethrough, the document being configured so that the decoder lens may be selectively positioned to overlie the image receiving surface to decode encoded indicia formed thereon;
digitally encoding a source image to produce a rasterized encoded image having a raster frequency corresponding to the lens frequency; and
applying the encoded image to the image receiving surface of the substrate.
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Accused Products
Abstract
A self-authenticating article comprising a substrate having an image receiving surface and a lenticular lens is provided. The lenticular lens has a predetermined lens frequency and is configured for optically decoding encoded indicia viewed therethrough. The lens is attached to the substrate so that the lens can be selectively positioned to overlie the image receiving surface to decode encoded indicia printed thereon. The self-authenticating article further comprises an encoded image on the image receiving surface, the encoded image comprising at least one of the set consisting of printed indicia and indicia formed as variations in surface geometry of the image receiving surface. The surface geometry variations may comprise raised and non-raised areas surface areas that combine to define at least a portion of the indicia.
48 Citations
13 Claims
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1. A method of producing a self-authenticating article comprising:
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providing a document comprising a substrate having an image receiving surface and a decoder lens having a lens frequency and being configured for optically decoding corresponding encoded indicia viewed therethrough, the document being configured so that the decoder lens may be selectively positioned to overlie the image receiving surface to decode encoded indicia formed thereon;
digitally encoding a source image to produce a rasterized encoded image having a raster frequency corresponding to the lens frequency; and
applying the encoded image to the image receiving surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A self-authenticating article comprising:
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a substrate having an image receiving surface;
a lenticular lens having a predetermined lens frequency, the lenticular lens being configured for optically decoding encoded indicia viewed therethrough and being attached to the substrate so that the lens can be selectively positioned to overlie the image receiving surface to decode encoded indicia printed thereon; and
an encoded image on the image receiving surface, the encoded image comprising at least one of the set consisting of printed indicia and indicia formed as variations in surface geometry of the image receiving surface. - View Dependent Claims (10, 11, 12, 13)
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Specification