Stock material or miscellaneous articles – Article having latent image or transformation
Patent
1981-08-21
1983-12-13
Hess, Bruce H.
Stock material or miscellaneous articles
Article having latent image or transformation
156220, 156233, 156234, 156235, 156240, 156241, 156247, 156249, 156277, 427 7, 428172, 428206, 428207, 428208, 428209, 428211, 428323, 428328, 428916, B32B 330, B44C 116, B41M 314
Patent
active
044205155
ABSTRACT:
A process for preventing the counterfeiting of valuable documents through use of photography, photocopying techniques, or other methods of counterfeiting. The process includes laminating an extremely thin metallic film to the substrate of the valuable document before the document is printed with the area of the metallic film being small in comparison to the area of the document. The metallic film can be located anywhere on the face of the document and a "latent image" is embossed on the metallic film when the document is printed. Embossing the latent image on the metallic film, rather than on the document substrate, provides many advantages not possible in the prior art.
A photocopy of a document containing the embossed metallic film does not include the latent image and a color photocopy will be different in color than the original document. Therefore, a lay observer can readily differentiate between a genuine document and a counterfeit document.
REFERENCES:
patent: 4124947 (1978-11-01), Kuhl et al.
patent: 4215170 (1980-07-01), Oliva
Amon Maurice A.
Bretler Haim
Hess Bruce H.
Sicpa Holding S.A.
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