PLANE-SHAPED MULTILAYER LASER OPTICAL RECORDING MATERIAL AND MANUFACTURE THEREOF

    公开(公告)号:JPS6478885A

    公开(公告)日:1989-03-24

    申请号:JP13453488

    申请日:1988-06-02

    Applicant: BASF AG

    Abstract: PURPOSE: To improve the manufacture, sensitivity and S/N ratio by adjusting a content of Au in a recording layer manufactured by spattering Au and at least one of specific metals onto a base at least two times, the average particle diameter of the particles generating the surface protuberance and the average phase depth to be specific values. CONSTITUTION: A recording layer comprising a base stable in size, Au and at least one of the metals selected from Ru, Rh, Rd, Ag, Cu, Re, Oc, Tr and Pt includes 15-85 wt.% of Au to the total amount of the recording layer, and has the surface protuberance with 10-200 mm of average particle diameter. Further the average phase thickness (d) is 5-300 nm when it is represented by a formula; d=(dmin +dmax )/2 (dmin is the average thickness of ten particles of the thinnest part of the recording layer, and dmax is the average thickness of ten particles of the thickest part).

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