申请人:Mitsubishi Kagaku Media Corporation, Ltd.
公开号:EP1864822A1
公开(公告)日:2007-12-12
Problem: To provide an optical recording medium having a recording layer improved in light stability that is capable of writing and reading of high-density optical information by a short-wavelength laser beam.
Means for Solving the Problems: There is provided an optical recording medium with a recoding layer comprising an organic dye compound, wherein the recording layer contains a metal complex compound composed of a pyridone azo compound represented by the following the general formulas [I] to [III] and a divalent ion of metal coordinated to it such as nickel, cobalt, iron, zinc, copper, manganese and the like, wherein the pyridone azo compound contains a 6-hydroxy-2-pyridone structure as a coupling component and isoxazole, 1,2,4-triazole or pyrazole structure as a diazo component.
(In the general formulas [I] to [III], R1 to R10 each is independently a hydrogen atom or monovalent functional group.)
问题:提供一种光学记录介质,其记录层的光稳定性得到改善,能够通过短波长激光束写入和读取高密度光学信息。
解决问题的方法:本发明提供了一种具有由有机染料化合物组成的重编码层的光学记录介质,其中记录层含有一种金属络合物,该金属络合物由以下通式[I]至[III]表示的吡啶酮偶氮化合物和与之配位的二价金属离子如镍组成、其中吡啶酮偶氮化合物包含作为偶联组分的 6-羟基-2-吡啶酮结构和作为重氮组分的异噁唑、1,2,4-三唑或吡唑结构。
(在通式[I]至[III]中,R1 至 R10 各自独立地为氢原子或单价官能团)。