Optical recording material

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, 540121, 540122, 540128, 540135, 540136, 540137, 540139, 540140, G11B 724, B41M 526, G01D 900, G03C 172

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048142565

ABSTRACT:
An optical recording material possesses a light-absorbing layer on a base, the said layer containing one or more colorants of the formula (I) ##STR1## where M is two hydrogen atoms or Fe, Cu, Co, Ni, Pb, Cr, Mn, VO, TiO, ZrO, Nb, Ta, Pd, SiCl.sub.2, Sn or SnX.sub.2, X is Cl, Br or I, and A is a divalent radical of an unsaturated, unsubstituted or substituted carbocyclic ring system.
The colorants (I) present on the novel recording materials have a high absorption in the range from 650 to 850 nm and accordingly can be written on and read by means of a laser. The colorants can be applied as 20-1000 nm layers on a suitable base by vapor deposition or as a solution or dispersion, with or without the addition of a polymeric binder, by a conventional method.
The layers are very stable to atmospheric influences and daylight.

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