Updatable micrographic pocket data card

Details Updatable micrographic pocket data card Updatable micrographic pocket data card

1985-11-14

1987-07-14

Trafton, David L.

Registers

Records

235454, 346 76L, 350361, 365106, 427 7, 428209, 430 10, G06C 1900

Patent

active

046804595

ABSTRACT:
A strip of optical contrast laser recording material is disposed on a wallet-size card, and has laser written micrographic characters recorded thereon. The characters are formed of a matrix of laser recorded character spots and are eye readable using twenty power magnification. The characters are recorded in situ on the card, after the strip is disposed in the card, by a laser having a beam focused on the strip. A light detector reads the reflected beam to confirm laser writing. Either raster-like or zig-zag scanning of the beam creates each character matrix. Each of the character spots may be made up of one laser spot or by a group of laser spots.

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patent: 4360728 (1982-11-01), Drexler
patent: 4596409 (1986-06-01), Holbein et al.

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