| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly reliable optical recording medium which meets the requirement for high speed and high density. <P>SOLUTION: The optical recording medium has at least a light incident surface (boundary surface) of the recording layer formed in a phase separating structure for an area for optical recording/reproducing and an area free from recording/reproducing, and is recorded or reproduced with a laser beam having a diameter larger than the phase separating structure. In the recording medium, the area for optical recording/reproducing on the recording layer contains ultrafine metal grains having a function of changing the optical property by light or heat. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
