发明名称 Method of making a magneto-optical recording medium that includes a light interference layer having specified characteristics
摘要 A method of making a magneto-optical recording medium for having information magnetically recorded on its recording layer read out by magneto-optical effect by applying a reproducing light beam emitted from a semiconductor laser thereto and detecting the reflected light beam thereof by means of a photodetector having no self-multiplication characteristic or a photodetector having a self-multiplication characteristic. The method includes the steps of selecting a recording layer comprising a magnetic film; selecting a light interference layer comprising a dielectric; defining the thickness of the light interference layer by: <IMAGE> where d is the film thickness of the light interference layer, N is the refractive index of the light interference layer and lambda is the wavelength of the reproducing light, Y is selected from 0, 1 and 2, and 1</=X</=3 or 5</=X</=7 in the first case or 2</=X</=3.9 or 4.1</=X</=6 in the second case, respectively; selecting a light reflecting layer and arranging the recording layer, the light interference layer and the light reflecting layer in succession along one direction to form the magneto-optical recording medium.
申请公布号 US5253233(A) 申请公布日期 1993.10.12
申请号 US19910758283 申请日期 1991.08.28
申请人 CANON KABUSHIKI KAISHA 发明人 FUJII, EIICHI
分类号 G11B11/105;(IPC1-7):G11B13/04 主分类号 G11B11/105
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