Optical recording elements having recording layers containing cationic azo dyes
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United States of America Patent
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Aug 20, 1996
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N/A
app pub date -
Dec 13, 1994
filing date -
Dec 13, 1994
priority date (Note) -
Expired
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Abstract
An optical recording element having a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a dye selected from the group consisting of cationic azocyanine dyes and mixtures of such dyes and the unrecorded layer is such that the real part of the refractive index (N) at 780 nm is at least 1.8 and the imaginary part (k) is 0.01 to 0.15.
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