| 摘要 |
PURPOSE:To improve S/N by providing the light absorbing property to the resin forming a pattern in case an optical disk medium consists of a metallic substrate, the resin forming a projected/recessed pattern and a recording film. CONSTITUTION:A projected/recessed pattern is formed by the resin 2 on the surface of a metallic substrate 3, and a recording film 1 is formed on the resin 2. Thus a replica is obtained. A light absorbing agent is mixed previously into the resin 2 to absorb the light used for record/reproduction. This virtually eliminates the reflected light 4-3 which is given from the substrate 3. Thus it is possible to obtain a signal having a high S/N and then to obtain a replica of high quality. |
