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EP0822544A1 Optical recording medium 失效
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Optical recording medium
摘要:
The present invention is directed to an optical recording medium having at least a recording layer and a reflective layer on a substrate, said recording layer containing a dipyromethene metal chelate compound obtained from a dipyromethene compound represented by the general formula (1) and a metal ion:
wherein R 1 to R 7 are defined in the specification.
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