| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk which is hardly flawed and which can protect information of a magnetic body. <P>SOLUTION: The magnetic body 3 of both or either of a magnetic recording medium and a magnetic reproducing medium is provided on a label surface 2 of an optical disk substrate 1. A protective layer 4 is provided on the magnetic body 3. <P>COPYRIGHT: (C)2003,JPO |
