Plastic identification card having forgery protection with respe

Details Plastic identification card having forgery protection with respe Plastic identification card having forgery protection with respe

1984-02-10

1985-04-16

Hess, Bruce H.

Recorders

Record receiver deforming

283 95, 283904, 346200, 346226, 428172, 428199, 428916, B41M 516

Patent

active

045119082

ABSTRACT:
This invention relates to a plastic identification card with forgery protection with respect to embossed information. There is a problem with existing credit cards in that the forgers can change the embossed information. This problem is overcome by providing in registration with the embossed information a layer of chemicals reactive under the pressure of a change in the embossed information to release a colored dye.

REFERENCES:
patent: 4462039 (1984-07-01), Small

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