| 摘要 |
<P>PROBLEM TO BE SOLVED: To make an optical recording medium which is suitable for identification, management, or the like. <P>SOLUTION: A recording layer formed on an optical recording medium DSC is irradiated with write-in light by a pickup 28, a visible image pattern suitable for identification, management, or the like is formed on the optical recording medium DSC by varying optical properties at an irradiation part and a non-irradiation part of light in the recording layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
