Information recording member and method of fabricating the same
Patent 4434429 Issued on February 28, 1984. Estimated Expiration Date: 
October 15, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 15, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3132584 3560994 3889272 Recording member for laser beam and process for recording Method and apparatus for recording and reproducing information on and from an optical disk Recording member Patent #: 4348461 InventorsAssigneeApplicationNo. 06/311888 filed on 10/15/1981US Classes:346/135.1, Laminated, impregnated, or coated bases430/270.12Having read-write layer of 100 per cent inorganic compositionExaminersPrimary: Griffin, Ronald W.Attorney, Agent or FirmInternational ClassesG11B 7/24 (20060101)G11B 7/243 (20060101) Foreign Application Priority Data1980-10-15 JPAbstractAn information recording member comprising a substrate, and a thin film formed on the substrate with or without an intermediate layer therebetween and irradiated with a recording beam to make an aperture or recess in the thin film, is disclosed in which the thin film is a crystalline film and has a composition expressed by a general formula Sex Tey Mz, where x, y and z are given by formulae 0.02ࣘxࣘ 0.35, 0.50ࣘyࣘ0.98 and 0ࣘzࣘ0.45, respectively, and M indicates at least one element selected from the group consisting of As, Sb, Bi, S, Si, Ge, Sn, Pb, Al, Ga, In, Tl, Zn, Cd, Au, Ag, Cu, Ni, Pd, Rh, Cr, Mo, W and Ta, and in which the thin film does not deteriorate to such an extent as seen in conventional recording films when a time has elasped, since the thin film is crystalline. |
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