| abstract |
(57) Abstract: Provided is an optical recording medium comprising a substrate, a reflective layer and a recording layer, wherein the recording layer substantially comprises one or more dyes of the following formula (I) or chlorinated or brominated compounds thereof. I do. Embedded image Wherein M is H 2 or a divalent metal atom, an oxo metal, a halogeno metal or a hydroxy metal, which may be coordinated to one or two neutral ligands. The recording medium of the present invention has high sensitivity, high resolution and good reproduction characteristics. |