Frishauf, Holtz, Goodman & Woodward
Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound
 Certain types of aryl nitrogen compounds are found to be useful not only for effectively rendering dyes lightfast but also for using as an additive that has high solubility in solvents and sufficiently good miscibility with dyes to insure that their solubility will not be impaired. They can be used for preventing various reactions that cause deterioration by light in organic dyes, in particular cyanine dyes. They can also be used for improving the keeping quality and recording and reproduction characteristics of optical recording media that use organic dyes in the form of thin films. Representative examples include N, N-lower alkyl substituted nitrosoanilines, phenol or naphthol derivatives having at least one nitroso group, nitrosodiphenylamine and its derivatives and 1-pycryl-2, 2-diarylhydrazyl free radicals. 
Taiyo Yuden Co., Ltd.
Y G G G G C
Y10S G11B G11B G11B G11B C08K
additional inventional additional inventional additional inventional
Kunihiko Toru Yosikazu Emiko
Ootaguro Fujii Takagisi Hamada