Optical disc humidity protected

Details Optical disc humidity protected Optical disc humidity protected

1983-03-21

1985-05-14

Goldberg, E. A.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

346 76L, 346137, 369284, G01D 1534

Patent

active

045175748

ABSTRACT:
A protected optical disc intended for the recording of information is protected against the harmful consequences of humidity by the presence of a hydrophylous material situated at a particular distance from the recording surface, which thus retains a high sensitivity during the write or read operations. The invention may be applied especially to discs intended for digital recording.

REFERENCES:
patent: 4340655 (1982-07-01), Hollister et al.
patent: 4353767 (1982-10-01), Wilkinson
patent: 4380016 (1983-04-01), Lehurean et al.
patent: 4414273 (1983-11-01), Wada et al.
patent: 4442172 (1984-04-01), Oshima et al.
Patent Abstracts of Japan, vol. 5, No. 150, (P-81) (822), Sep. 22, 1981, p. 146 P81.

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