Presensitized plastic card, tamperproof identification card prepared therefrom, and process for manufacture of tamperproof identification card

Claim 1

A tamperproof identification card bearing information which may be in the form of photograph, images, indicia and the like, which comprises: a plastic support and one or more exposed and developed photosensitive zones carried on at least one of the major surfaces of said support, said zone comprising an exposed and developed layer of a photosensitive composition comprising an intimate mixture of (a) at least one photosensitive diazonium salt, (b) a coupling agent for said salt, and (c) at least one first thermally activated adhesive resin having a VICAT softening point in the range of from about 40° C. to about 140° C., the weight ratio of the salt plus coupling agent to the adhesive resin being from about 50:50 to about 5:95; said photosensitive zones having been exposed to actinic light through an original to be reproduced, to decompose the diazonium salt in the exposed portions of said zones, the unexposed portions of said zones having been developed in an alkaline medium to form photograph, images, indicia, and the like and then dried; and a protective plastic film consisting essentially of, or having at least one surface layer consisting essentially of, a second thermally activated adhesive resin having a VICAT softening point in the range of 40° C. to 140° C., and laminated to the layer side of said support and the dried, developed photosensitive composition; wherein at least one of said support and said protective plastic film is transparent, whereby the information provided by the developed photosensitive composition can be viewed.