Optical recording medium containing an azulenium dye

Details Optical recording medium containing an azulenium dye Optical recording medium containing an azulenium dye

1988-01-25

1990-02-27

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430495, 430945, 3461351, G11B 724, G01D 900, G03C 516, B41M 526

Patent

active

049045660

ABSTRACT:
An optical recording medium composed of a base material and a laser light sensitive layer which contains an azulenium dye as storage material with or without a binder is obtainable by spin-coating a solution containing an azulenium dye of the formula ##STR1## where R is C.sub.1 -C.sub.6 -alkyl which may be substituted or unsubstituted, and n is 1, 2 or 3, with or without a binder and one or more solvents which have evaporation numbers of not less than 4 and in which an azulenium dye of the abovementioned formula has a solubility of not less than 5 g/l onto a transparent base material based on a plastics material or glass.

REFERENCES:
patent: 4548886 (1985-07-01), Katagiri et al.
patent: 4565761 (1986-01-01), Katagiri et al.
patent: 4656121 (1987-04-01), Sato et al.
patent: 4737443 (1988-04-01), Niwa et al.
Angew. Chem. 78, p. 937 (1966).

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