Data carrier for optical read-out

Details Data carrier for optical read-out Data carrier for optical read-out

1975-10-16

1977-04-26

Cook, Daryl W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

1791003B, 235 6112N, G11B 724, H04N 576, G06K 1906

Patent

active

040202780

ABSTRACT:
The present invention relates to data carriers intended for optical read out. The data carrier in accordance with the invention comprises: a first transparent material at the surface of which the information is recorded in the form of an embossed pattern; a partially transparent metal layer covers said embossed pattern and a second, thick transparent material is deposited upon the metal layer for protection purposes.

REFERENCES:
patent: 3430966 (1969-03-01), Gregg
patent: 3855426 (1974-12-01), Bouwhuis
patent: 3919465 (1975-11-01), Adler et al.
patent: 3931459 (1976-01-01), Korpel

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