Self-authenticating documents
The present invention provides a durable and self-verifying secure document system and a method for its production, wherein counterfeiting is prevented. The secure document system is potentially useful for a wide variety of documents including, but not limited to, lottery tickets, currency, traveler's checks, passports, stock and bond certificates, bank notes, driver's licenses, wills, coupons, rebates, contracts, food stamps, magnetic stripes, test answer forms, invoices, tickets, inventory forms, tags, labels and original artwork. The instant invention provides a plastic paper substitute having various indicia associated therewith including visible and hidden indicia. Application of the hidden indicia to the plastic paper substitute is implemented in accordance with a computer software program, and the document includes an integral lens area which is particularly designed to verify the document's authenticity by rendering the hidden indicia visible to the viewer. The instant invention is particularly durable when produced on one of the modern plastic paper substitutes.
1. A self authenticating article comprising:
a substrate having at least one printable surface portion;
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 positioned to overlie the at least one printable surface portion to decode encoded indicia printed thereon; and
encoded, hidden indicia printed on the at least one printable surface portion of the substrate, the encoded, hidden indicia comprising a plurality of lines having a line frequency that is a multiple of the lens frequency, at least a portion of the encoded, hidden indicia being decodable only through the use of a decoder having a decoding frequency corresponding to the predetermined line frequency.
2. The self-authenticating article of claim 1 wherein said lenticular lens is inlaid.
3. The self authenticating article of claim 1 wherein said lenticular lens is preformed.
4. The self authenticating article of claim 1 wherein said lenticular lens is produced by an intaglio engraving process.
5. The self authenticating article of claim 1 wherein said substrate is selected from the group consisting of synthetic resin films having a high degree of writability and printability, laminate composite structures including combinations of paper and non-paper materials, latex saturated durable papers, coated polyolefin substrates formed from randomly dispersed and bonded polyolefin filaments, reinforced papers, and combinations thereof.
6. The self authenticating article of claim 1 wherein said article is selected from the group consisting of currency, stock certificates, bond certificates, special event tickets, tax stamps, official certificates, passports, bank and travelers checks, anti-counterfeiting labels, birth certificates, land deed titles, visas, food stamps, lottery tickets, driver's licenses, wills, coupons, rebates, contracts, test answer forms, invoices, inventory forms, and original artwork.
7. A self authenticating article comprising:
a substrate having at least one printable surface portion;
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 positioned to overlie the at least one printable surface portion to decode encoded indicia printed thereon; and
indicia printed on the at least one printable surface portion of the substrate, the indicia comprising a plurality of raster lines having a line frequency that is a multiple of the lens frequency, the plurality of raster lines forming a source image and comprising deviations corresponding to encoded, hidden indicia, at least a portion of the encoded, hidden indicia being decodable through the use of a decoder having a decoding frequency corresponding to the predetermined line frequency.
8. The self-authenticating article of claim 7 wherein said lenticular lens is inlaid.
9. The self authenticating article of claim 7 wherein said lenticular lens is preformed.
10. The self authenticating article of claim 7 wherein said lenticular lens is produced by an intaglio engraving process.
11. The self authenticating article of claim 7 wherein said substrate is selected from the group consisting of synthetic resin films having a high degree of writability and printability, laminate composite structures including combinations of paper and non-paper materials, latex saturated durable papers, coated polyolefin substrates formed from randomly dispersed and bonded polyolefin filaments, reinforced papers, and combinations thereof.
12. The self authenticating article of claim 7 wherein said article is selected from the group consisting of currency, stock certificates, bond certificates, special event tickets, tax stamps, official certificates, passports, bank and travelers checks, anti-counterfeiting labels, birth certificates, land deed titles, visas, food stamps, lottery tickets, driver's licenses, wills, coupons, rebates, contracts, test answer forms, invoices, inventory forms, and original artwork.