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The invention relates to identification documents, and in particular to providing optically variable personalized data to identification documents. In one implementation, we provide an identification document comprising a document layer and a first indicium. The document layer comprises a material c

The invention relates to identification documents, and in particular to providing optically variable personalized data to identification documents. In one implementation, we provide an identification document comprising a document layer and a first indicium. The document layer comprises a material capable of being printed by a thermally transferable optically variable ink. The first indicium is printed on the document layer and comprises personalized data and printed to the document layer by a thermally transferred optically variable ink. The first indicium may be printed to the document layer by disposing a thermally transferable optically variable ink in a mass transfer panel of a printer ribbon adapted for use in a dye diffusion thermal transfer printer, and printing the first indicium as part of a mass transfer printing process. The thermally transferred optically variable ink can be selected and printed such that the first indicium has at least one of a luster, shine, sheen, pearlescent appearance, iridescent appearance, and mirror-like appearance. This technology enables the creation of a halftone “mirror image” over a color ghost image to achieve a layered and linked multiple personalization scheme of ID documents.

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What is claimed is: 1. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the do

What is claimed is: 1. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the document layer by a thermally transferred optically variable pigment; the first indicium being at least partially overlaid with a second indicium printed to the document layer by a thermally transferred covert pigment, wherein the first and the second indicia are printed on the document layer by: disposing a thermally transferable optically variable pigment in a mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing or mass transfer printing to form a first layer; disposing a thermally transferable covert pigment in the mass transfer panel to form a second layer over the first layer; and printing the first and second indicia as part of a mass transfer printing process, such that, the second indicium printed in covert pigment at least partially overlays the first indicium printed in optically variable pigment. 2. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the document layer by a thermally transferred covert pigment; the first indicium being at least partially overlaid with a second indicium printed to the document layer by a thermally transferred optically variable pigment, wherein the first and second indicia are printed on the document layer by: disposing a thermally transferable covert pigment in a mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing or mass transfer printing to form a first layer; disposing a thermally transferable optically variable pigment in the mass transfer panel to form a second layer over the first layer; and printing the first and second indicia as part of a mass transfer printing process, such that, the second indicium printed in optically variable pigment at least partially overlays the first indicium printed in covert pigment. 3. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the document layer by a thermally transferred optically variable pigment; at least a second indicium printed on the document layer, the second indicium printed to the document layer by a thermally transferred covert pigment; wherein the first indicium and the second indicium are printed on the document layer by: disposing a thermally transferable optically variable pigment in a first mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing or mass transfer printing; disposing a thermally transferable covert pigment in a second mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing or mass transfer printing; and printing the first and second indicia as part of a mass transfer printing process. 4. The identification document of claim 3, wherein the second indicium depicts at least part of the same personalized data as the first indicium. 5. The identification document of claim 4, wherein at least a portion of the first indicium overlays at least a portion of the second indicium. 6. The identification document of claim 3, wherein at least a portion of the first indicium overlays at least a portion of the second indicium. 7. The identification document of claim 3, wherein the first indicium is aligned and sized so as to overlay the second indicium. 8. The identification document of claim 3, wherein at least a portion of the second indicium overlays at least a portion of the first indicium. 9. The identification document of claim 8, wherein the first indicium is aligned and sized so as to overlay the second indicium. 10. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the document layer by a thermally transferred optically variable pigment; at least a second indicium printed on the document layer, the second indicium printed to the document layer by one or more thermally transferred visible pigments; wherein the first indicium and the second indicium are printed on the document layer by: disposing a thermally transferable optically variable pigment in a mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing, the printer ribbon including one or more panels of thermally transferred visible pigment; printing the first indicium as part of a mass transfer printing process, and printing the second indicium as part of a dye diffusion thermal transfer printing process. 11. The identification document of claim 10, wherein the second indicium depicts at least part of the same personalized data as the first indicium. 12. The identification document of claim 11, wherein at least a portion of the first indicium overlays at least a portion of the second indicium. 13. The identification document of claim 10, wherein at least a portion of the first indicium overlays at least a portion of the second indicium. 14. An identification document comprising: a document layer comprising a material for receiving printing of thermally transferable optically variable pigment; and a first indicium printed on the document layer, the first indicium comprising personalized data and printed to the document layer by a thermally transferred optically variable pigment and a thermally transferred covert pigment; wherein the first indicium is printed on the document layer by: disposing a mixture of a thermally transferable optically variable pigment and a thermally transferable covert pigment in a mass transfer panel of a printer ribbon configured for dye diffusion thermal transfer printing or mass transfer printing; and printing the first indicium as part of a mass transfer printing process.