Knobbe Martens Olson & Bear
Optical information recording medium
An optical information recording medium has light interference layers including a recording layer on a substrate. The recording layer includes an organic dye and a photostabilizer which is, for example, the compound of formula 1wherein at least one of R1 to R8 represents a substituted alkyl group having a terminal cyano group, with the others represent other substituents; Y represents a monovalent or divalent cation; and Xm− represents a monovalent or divalent anion.
Taiyo Yuden Co., Ltd.
G G G Y G G C G G G G G G G
G11B G11B G11B Y10T G11B G11B C09B G11B G11B G11B G11B G11B G11B G11B
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Mamoru Takuo Isao Toru
Uchida Kodaira Okitsu Fujii