Data system containing a high capacity optical contrast laser re

Details Data system containing a high capacity optical contrast laser re Data system containing a high capacity optical contrast laser re

1984-11-21

1985-10-01

Pitts, Harold I.

Registers

Records

2353825, 235468, G06K 1900

Patent

active

045448353

ABSTRACT:
A data card having an optical, high resolution laser recording material, such as a metal-containing film, adhering to it. The strip of laser recording material has a capacity for recording at least 250,000 data bits represented by optically contrasting spots having a dimension of less than 25 microns. The optical contrast of the spots with respect to the surrounding field is at least two to one. The strip may have a preinscribed formatting pattern for positioning, timing, programming and related functions.

REFERENCES:
patent: 4467209 (1984-08-01), Maurer

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