| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk with a reflection layer formed first on the substrate, wherein deformation of a substrate due to heat and stress generated by film-deposition, repetitive recording and reproduction operation and the like is suppressed to have excellent long term stability. <P>SOLUTION: The optical disk has at least the reflection layer 1003 on the substrate 1001 and performs reproduction of information by irradiation with light, wherein a buffer layer 1002 is provided between the substrate 1001 and the reflection layer 1003. <P>COPYRIGHT: (C)2007,JPO&INPIT |
