| 摘要 |
PURPOSE:To securely fix the central parts of molded substrates which are of the prescribed shape in the section in the central parts of sticking surfaces and have required layers and to form a specified space where an adhesive agent enters by adhering even the central parts of the substrates by the adhesive agent, thereby sticking the substrates to each other. CONSTITUTION:Laminated films 5 of an optical recording layer and protective layer are provided on one of the molded transparent substrates having the sticking sections of the projecting shape made higher in the central parts of the substrates than the recording surfaces and a dielectric film 6 is provided on the other. The central parts of such substrates are tightly stuck as well when the recording surface and central part are tightly stuck to each other by the respective UV hardening adhesive agents 7. A magneto optical disk 4 securely fixed in the central parts of the substrates is thus obtd. Oscillation and distortion, etc., are eliminated and the accuracy to mount a hub 8 is enhanced; in addition, the specified space where the adhesive agent enters is formed and the jumping out of the adhesive agent from the outer periphery of the substrates is prevented. |
