| 摘要 |
An optical recording medium is described, having suitable recording characteristics over a wide range of recording linear speed and fitting with recording/ reproduction apparatuses of CD-R specifications. The optical recording medium includes a substrate having at least a light absorbing layer thereon, which is mainly composed of three phthalocyanine compounds (I), (II) and (III). Each of the phthalocyanine compounds (I) and (II) has a thermal decomposition temperature of from 200 DEG C to 300 DEG C, and has a different light absorption ability against light having a wavelength of 780nm. The phthalocyanine compound (III) has a thermal decomposition temperature of from 300 DEG C to 350 DEG C.An optical recording medium is described, having suitable recording characteristics over a wide range of recording linear speed and fitting with recording/ reproduction apparatuses of CD-R specifications. The optical recording medium includes a substrate having at least a light absorbing layer thereon, which is mainly composed of three phthalocyanine compounds (I), (II) and (III). Each of the phthalocyanine compounds (I) and (II) has a thermal decomposition temperature of from 200 DEG C to 300 DEG C, and has a different light absorption ability against light having a wavelength of 780nm. The phthalocyanine compound (III) has a thermal decomposition temperature of from 300 DEG C to 350 DEG C.
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