| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a write-once type optical recording medium enabling excellent high-density high-speed recording and reproduction by a laser of a wavelength of 520-690 nm, and a dipyrromethene metal chelate compound used therefor. <P>SOLUTION: The optical recording medium containing in a recording layer the dipyromethene metal chelate compound having a thermal modification starting temperature of 290 to lower than 500°C, is provided. <P>COPYRIGHT: (C)2004,JPO |
