Replicable optical recording medium

Details Replicable optical recording medium Replicable optical recording medium

1979-10-17

1981-08-18

Konick, Bernard

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369284, 369286, 369288, 358297, 3461351, 346 76L, G11B 700

Patent

active

042850568

ABSTRACT:
An optical recording medium which comprises a light reflective layer, a light transmissive layer and a light absorptive layer, the material comprising the light transmissive layer has a melting, sublimation or decomposition temperature at least 300.degree. C. less than that of the material comprising the absorptive layer. Information is recorded as openings in both the light transmissive and absorptive layers or as bubbles in the absorptive layer. These storage mechanisms produce topographical features which are suitable for replication, thus allowing direct replication of the recorded information.

REFERENCES:
patent: 3636526 (1972-01-01), Feinleib
patent: 3665483 (1972-05-01), Becker
patent: 3842194 (1974-10-01), Clemens
patent: 3889272 (1975-06-01), Lou
patent: 3902010 (1975-08-01), Goshima
patent: 4069487 (1978-01-01), Kasai
patent: 4097895 (1978-06-01), Spong
patent: 4101907 (1978-07-01), Bell et al.
patent: 4188214 (1980-02-01), Kido
patent: 4195312 (1980-03-01), Bell et al.
Palemo et al., Optica Y Laser Tech., Aug. 1977, p. 169.

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