Optical recording medium

Details Optical recording medium Optical recording medium

2007-03-02

2011-12-13

Mulvaney, Elizabeth (Department: 1785)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064500, C428S064600, C430S270130

Reexamination Certificate

active

08075974

ABSTRACT:
An optical recording medium having first protective layer, recording layer, second protective layer, and reflective layer, wherein the recording layer contains a phase-change material represented by Formula (1″1), Formula (1-2), or Formula (1-3); the second protective layer contains one selected from zinc oxides, indium oxides, tin oxides, mixtures thereof, and materials Formula (2), and materials Formula (3). Formula (1″1): InαiSbβiX1γi(X1: Ge, Te, Zn, Mn, or mixture thereof, 0.10≦α1≦0.25, 0.65≦β1≦0.80, and 0.04≦γ1≦0.15) Formula (1-2): Gaα2Sbβ2SnY2Ges2X2∈2(X2: Te, Zn, Mn, In, or mixture thereof, 0.04≦α2≦0.09, 0.56≦62≦0.79, 0.05≦γ2<0.30, 0.03≦δ2≦0.19, and 0≦∈2≦0.09) Formula (1-3): Mnα3Sbβ3SnY3Geδ3X3∈3(X3: Te, In, Zn, Bi, or mixture thereof, 0.04≦α3≦0.09, 0.56≦63≦0.79, 0.05≦γ3≦0.29, 0.03≦δ3≦0.23, and 0≦∈3≦0.09) Formula (2): ZnO—Al—Y [(100−α4−64):α4:β4] (Y: Mn, Ge, Ti, or mixture thereof, 0.5≦α4≦10.0, and 0≦B4≦25.0) Formula (3): ZnO—Al2O3—Z [(100−α5−65):α5:β5] (Z: Mn oxide, Ge oxide, Ti oxide, or mixture thereof, 0.5≦α5≦10.0, and 0≦65≦30.0).

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