Optical recording elements containing mixtures of metallized car

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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43027016, 4302702, 43027021, 430945, 369288, G11B 724

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active

058210296

ABSTRACT:
An optical recording element having a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer. The recording layer comprises (i) a metallized carbamoylazo dye having an azo group linking a substituted 3-hydroxypyridine nucleus to a phenyl nucleus wherein the phenyl nucleus has a carbamoyl substituent ortho to the azo group and (ii) a cyanine dye. The unrecorded recording layer has a refractive index, at a selected wavelength from 400 to 660 nm, comprising a real part (n) greater than 1.8 and an imaginary part (k) less than 0.2.

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Dean, J.A., "Lange's Handbook of Chemistry" McGraw-Hill pp. 9.2-9.7, 1994.

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