| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a recording material in an optical recording medium in a write-once type DVD disc system corresponding to high speed writing-in. <P>SOLUTION: In the optical recording medium, at least one chelate compound consisting of azo compounds represented by general formula (I), bivalent metal salts and the like in the recording medium. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
