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    • 24. 发明专利
    • PRODUCTION OF OPTICAL RECORDING MEDIUM
    • JPS6329344A
    • 1988-02-08
    • JP17178686
    • 1986-07-23
    • CANON KK
    • SUZUKI YOSHIAKITAKANO KATSUHIKOKOYAMA OSAMU
    • G11B7/26
    • PURPOSE:To enable mass production in a short period by providing a stage for forming an auxiliary film which has the ruggedness having the prescribed depth to function as guide grooves on the surface by coating a liquid auxiliary film material on the rugged surface of a substrate and stage for forming a recording film on the auxiliary film. CONSTITUTION:The substrate 1 having the ruggedness deeper than the prescribed depth on one face is formed and the liquid auxiliary film material is coated on the rugged surface of such substrate to form the auxiliary film which has the ruggedness having the prescribed depth to function as the guide grooves on the surface. The recording film is formed on the auxiliary film. The depth of the grooves is about 700Angstrom when the prescribed depth is lambda/8n, if a semiconductor laser of; for example, lambda=8,300Angstrom is used and glass, acryl, polycarbonate, epoxy, etc., of about n=1.5 are used for the substrate. The most desirable result is, therefore, obtd. if the depth of the ruggedness on the surface of the auxiliary is selected at said value. The surface of the recording film is flattened and the reproduction characteristic is decreased by forming the auxiliary film. The titled recording medium is thereby produced without requiring much time for the process with the simple equipment.