Optical recording medium

Details Optical recording medium Optical recording medium

1989-11-06

1992-02-18

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of inorganic material

3692751, 369279, 369283, 428900, B32B 566

Patent

active

050893580

ABSTRACT:
An optical recording disk comprises a base plate, a flat layer, an optical recording layer and a protection layer which are laminated in this order. The flat layer has a flat surface which contacts with the optical recording layer to thereby enable the optical recording layer to have a uniform thickness over the layer and make the surface of the optical recording layer flat. At least one of the other layers constituting the above optical disk other than the optical recording layer comprises a material capable of recording and reproducing information, such as a magnetooptic material, a phase-change material, an organic pigment and a pit-formable material in which the information is recordable.

REFERENCES:
patent: 4587533 (1986-05-01), Nakane et al.
patent: 4600682 (1986-07-01), Spong et al.
patent: 4617601 (1986-10-01), Tanaka
patent: 4839883 (1989-06-01), Nagata et al.
patent: 4860273 (1989-08-01), Sawano et al.
patent: 4927681 (1990-05-01), Chikuma
patent: 4965153 (1990-10-01), Imataki et al.
patent: 4980875 (1990-12-01), Ishiwata et al.

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