Recording medium

Details Recording medium Recording medium

G - Physics

03

G

314/3

G03G 5/022 (2006.01) G11B 7/241 (2006.01) G11B 7/243 (2006.01)

Patent

CA 1131690

RECORDING MEDIUM Abstract of the Disclosure The specification discloses a recording medium having a first inorganic material layer which overlies a predeter- mined substrate and which exhibits a light absorptivity for projected light, and a recording layer which overlies the first inorganic material layer and whose principal component is an organic material, wherein the first inorganic material layer contains one or more elements selected from In, Bi, Te, Sb, Ge, Sn, Pb, Cr, Nb, Ni, Pd, Fe, Pt, Re, Ta, Th, Ti, Zr and Tl, and that the content of these elements is at least 65 atomic-%. Further, the first inorganic material layer may well be overlaid with a second inorganic material layer which exhibits a light transmissivity higher than that of this first inorganic material layer. Preferably, the material of the second inorganic material layer is an inorganic material which contains one or more elements selected from In, Bi, Te, Sb, Pb, Ge and Sn and one or more elements selected from S, Se and O. A stabilizing layer may additionally be disposed in proximity to one or both surfaces of the first inorganic material layer. This structure allows information to be recorded satisfactorily when using a semiconductor laser as a recording beam source.

348514

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