| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording medium which permits recording and regeneration of image data and shows outstanding light exposure properties and high shelf stability, in a DVD-R disc system using a semi-conductor laser having an oscillation wavelength in a short wavelength range, compared to the conventional system. <P>SOLUTION: The optical recording medium with a recording layer formed on a substrate contains at least an azo compound represented by formula (I), an azo-metallic chelate anionic compound composed of a metal, a metallic oxide or its salt and at least one kind of coloring matter salt composed of a cyanine coloring matter cationic compound represented by formula (II) (wherein R<SB>1</SB>to R<SB>8</SB>and A and B are as specified in the specification). <P>COPYRIGHT: (C)2003,JPO |
