| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording medium which can be applied to a write-once read-many optical DVD system using a semiconductor laser with an oscillation wavelength on a shorter wavelength side than the conventional optical recording medium. <P>SOLUTION: This optical recording medium includes a recording layer provided on a substrate. The recording layer contains (i) a formazan metal chelate compound A which is comprised of a formazan compound and a metal and exhibits, in a film form, an absorption spectrum having a maximum absorption wavelength in the range of 500 to 650 nm, (ii) a squarylium metal chelate compound which is comprised of a squarylium compound and a metal and exhibits, in a film form, an absorption spectrum having a maximum absorption wavelength in the range of 500 to 650 nm, and (iii) a formazan metal chelate compound B which is comprised of a formazan compound and a metal and exhibits, in a film form, an absorption spectrum having a maximum absorption wavelength in the range of 650 to 750 nm. <P>COPYRIGHT: (C)2004,JPO |
