| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk which is less in mark deviation, double copying, and ghost as an optical disk which uses a sample servo tracking system, and its manufacture. SOLUTION: This optical disk has a resin-molded substrate 11, and an enhancement film 12 formed of a dielectric thin film, a heat insulating film 14, a reflecting film 15, and a protective coat 16 which are laminated on the resin- molded substrate 11, which is 0.7 mm thick or smaller. Since the thickness of the resin-molded substrate is 0.7 mm or smaller, an optical disk which is less in mark deviation, double copying, and ghost is obtained as an optical disk which uses a sample servo tracking system. |
