Optical recording medium

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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430495, 430945, 3461351, 548438, G03C 172, G03C 516, G11B 724

Patent

active

047569875

ABSTRACT:
An optical recording medium is disclosed, comprising a support having provided thereon a recording layer containing a naphtholactam dye represented by formula: ##STR1## wherein K represents a substituted or unsubstituted aromatic amine residue; R represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted allyl group; Z.sup.- represents an anion; ring A represents a substituted or unsubstituted naphthalene ring; and m represents 1 or 2. The recording layer can be formed by coating easily, has a high reflectance to provide a satisfactory contrast of recording, and exhibits excellent resistance to light.

REFERENCES:
patent: 4581317 (1986-04-01), Simmons, III
patent: 4585722 (1986-04-01), Morinaka et al.
Hackh's Chemical Dictionary 4th ed., p. 377.

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