| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phase change type optical recording medium which is broad in margin to a speed of crystallization in its whole region, high in recording speed and highly durable in storage. <P>SOLUTION: On a substrate 1, a lower dielectric layer 2, a lower interface layer 3, a nuclei generating layer 4, a recording layer 5, an upper interface layer 6, an upper dielectric layer 7, an adjusting layer 8, and a heat releasing layer 9 are laminated in this order, and the outer surface of each layer is covered with a protecting layer 10. The film thickness of the nuclei generating layer 4 is gradually changed in the diameter direction. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
