| 摘要 |
PURPOSE:To obtain good recording property and oxidation resistance and to improve reliability by forming a recording film comprising a light-absorbing layer and Ti oxide with low oxidation number provided at least on the substrate side of the light-absorbing layer. CONSTITUTION:The recording film 4 consists of the light-absorbing layer 3 comprising Se-alloy layer and Ti oxide 2 with low oxidation number expressed by TiOx (0<x<2) which are provided at least on the substrate side of the light-absorbing layer 3 or on both sides of the layer 3. By this constitution, good recording characteristics can be obtained on recording since the obtd. medium has high CN ratio and low error rate due to preferable pit profiles. The medium has high environmental resistance such as oxidation resistance and has high reliability. |
