Process for making identification cards

Details Process for making identification cards Process for making identification cards

1973-02-28

1976-01-06

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

40 22, 156277, 156298, 283 7, 427 7, 427276, 427277, B32B 3118, B32B 3120, B44C 122

Patent

active

039309240

ABSTRACT:
A method of making an identification card which comprises making any required characters, designs and/or embossings on the base material of the card, further providing a colored layer on the bass material of the card and then engraving the colored layer and base to varying depths in the form of fine lines and and points so that, by regulating the ratio of the surface areas of the engraved part and unengraved part, the differences in the color thickness and luster may be expressed to form an engraved image by which the user can be identified and which image has no projections thereon.

REFERENCES:
patent: 2699720 (1955-01-01), Howey
patent: 2881246 (1959-04-01), Fairchild
patent: 2986598 (1961-05-01), Hell
patent: 3217643 (1965-11-01), Crissy et al.
patent: 3578538 (1971-05-01), Prosser et al.

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