Substrate for optical recording media and information records

Details Substrate for optical recording media and information records Substrate for optical recording media and information records

1982-04-26

1983-12-27

Hartary, Joseph W.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

346 76L, 428 65, 428409, 428413, 428446, 430945, 369286, G01D 1534

Patent

active

044234279

ABSTRACT:
A major surface of a disc-shaped plastic base is coated with two or more nonconformal coating layers with a solvent barrier layer interposed between said coating layers. The nonconformal coating layers fill in surface imperfections of the base while the solvent barrier layers allow an efficient stacking of said coating layers to yield a surface suitable for optical recording.

REFERENCES:
patent: 3665483 (1972-05-01), Becker et al.
patent: 3911444 (1975-10-01), Lou et al.
patent: 4069487 (1978-01-01), Kasai et al.
patent: 4097895 (1978-06-01), Spong
patent: 4109045 (1978-08-01), Goshima
patent: 4175145 (1979-11-01), Fechter
patent: 4216501 (1980-08-01), Bell
patent: 4300143 (1981-11-01), Bell et al.
patent: 4387381 (1983-06-01), Bell
Bartolini, R. A. et al., Optical Disk Systems Emerge, IEEE Spectrum 8/78, pp. 20-28.
U.S. Patent application No. 837,420, Spong et al., now abandoned, 9/77.

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