发明名称 OPTICAL TYPE RECORDING MEDIUM
摘要 PURPOSE:To prevent flaking of a reflecting layer and to simplify the manufacturing process, by providing the reflecting layer on an information recording surface except for the circumference of a recording medium and sticking a label on the entire surface. CONSTITUTION:Ring-shaped masks 6 and 7 are located on an inner circumference 4 and an outer circumference 5 which are nonrecording part on a transparent base 1 and a reflecting layer 8 is formed by vapor deposition or sputtering of aluminum. An adhesives 10 is coated on the entire surface and a label (protector) 12 provided with a display part 13 is stuck. Since the bonding strength of the base and the label is considerably high, the flaking of the reflecting layer 8 can be prevented. Since the protective layer 12 cannot necessarily be provided additionally, the manufacturing stage can be simplified.
申请公布号 JPS57169938(A) 申请公布日期 1982.10.19
申请号 JP19810054678 申请日期 1981.04.10
申请人 SONY KK 发明人 OOGA NORIO
分类号 G11B7/24 主分类号 G11B7/24
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