System for authenticating an item
AssigneeEastman Kodak Company
InventorsThomas D. Pawlik, Judith A. Bose
Life of this patent
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Abstract
A system of authenticating an item with a security mark includes a substrate (100); wherein the security mark is printed on the substrate with invisible ultraviolet (UV) absorbing ink (102); a coating comprised of UV fluorescent varnish (104) applied over the security mark and substrate; wherein an area comprising the security mark and coating with is illuminated with UV light; wherein a reduced fluorescence image of the security mark is identified; wherein the reduced fluorescence image is compared with the security mark; and wherein the item is authenticated if the reduced fluorescence image matches the security mark.
Claims21
A system of authenticating an item with a security mark comprising:
- a substrate;
- wherein the security mark is printed on the substrate with invisible ultraviolet (UV) absorbing ink;
- a coating comprised of UV fluorescent varnish applied over the security mark and substrate;
- wherein an area comprising the security mark and coating with is illuminated with UV light;
- wherein a reduced fluorescence image of the security mark is identified;
- wherein the reduced fluorescence image is compared with the security mark;
- and
- wherein the item is authenticated if the reduced fluorescence image matches the security mark.
A system of authenticating an item with a security mark comprising:
- a substrate;
- the security mark is printed on the substrate with ultraviolet (UV) absorbing ink;
- a transparent sheet comprising a UV fluorescent material is placed over the security mark and substrate;
- an area comprising the security mark and sheet with UV light is illuminated;
- a reduced fluorescence image of the security mark is identified;
- the reduced fluorescence image is compared with the security mark;
- and
- the item is authenticated if the reduced fluorescence image matches the security mark.
A system of authenticating an item with a security mark comprising:
- a substrate;
- wherein the security mark is printed on the substrate with ultraviolet (UV) absorbing ink;
- and
- wherein a transparent sheet or varnish comprising a UV fluorescent material is placed over the security mark and substrate.
Dependencies are inferred from the claim text.