Optical information-recording medium
专利汇可以提供Optical information-recording medium专利检索，专利查询，专利分析的服务。并且PURPOSE:To contrive higher sensitivity and stability of an optical information- recording medium used for writing and reproducing information by semiconductor laser, by providing a recording layer comprising a specified organic coloring matter. CONSTITUTION:A recording layer is provided which comprises an organic coloring matter of formula I, wherein R1 is a 1-6C alkyl, aralkyl or phenyl, A is formula II or the like, Y is -R4SO3 , Y' is -R4SO3Na or -R4SO3NH(R5)3, and Z is a benzene ring added to the benzene ring constituting indole. Since the coloring matter has an alicyclic ring of formula II or the like introduced into a methine chain, it has excellent preservation stability and characteristics of deterioration on reproduction. In addition, the coloring matter has excellent moisture resistance, since the benzene ring as Z is added to the benzene ring constituting indole. Further, the coloring matter has excellent chemical stability, solubility in solvents and wetting property for a substrate, since Y such as a sulfoalkyl is introduced into indole.，下面是Optical information-recording medium专利的具体信息内容。
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