Optical information disk

Details Optical information disk Optical information disk

G - Physics

11

B

352/32.4

G11B 7/00 (2006.01) G11B 7/243 (2006.01)

Patent

CA 1168359

PHN 9861 10 14-5-1981 ABSTRACT: "Optical information disk." An optical information disk in which information can be written and read optically and which has a sub- strate plate which on at least one side has a recording layer which satisfies the formula TexSeySbzSq wherein x = 55-85 at.%, y = 13-30 at.% z = 1-12 at.%, q - 0-10 at.% and x + y + z + q = 100. Suitable recording layers are Te60Se25Sb10S5 and Te75Se15Sb5S5.

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