Method of making a highly absorptive dye-containing underlayer f

Details Method of making a highly absorptive dye-containing underlayer f Method of making a highly absorptive dye-containing underlayer f

1982-06-25

1983-05-10

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430364, 430517, 430495, 3461351, G03C 184, G03C 102, G02B 2722

Patent

active

043830242

ABSTRACT:
A method of making an underlayer for a laser recording and data storage medium with a light absorption characteristic suited to a recording laser. The underlayer is formed by creating a nuclei layer in a silver-halide photosensitive emulsion layer and then contacting the emulsion layer with a chromogenic reducing agent and a chromogenic dye coupler. The reflective layer may be formed prior to this step by subjecting the nuclei layer to a monobath having a silver-halide solvent and a silver reducing agent until a reflective surface layer of non-filamentary silver particles is formed, or after the step by chemical vapor deposition or sputtering of a reflective metal layer over the underlayer.

REFERENCES:
patent: 4113490 (1978-09-01), Fujiwhara et al.
patent: 4230939 (1980-10-01), de Bont et al.
patent: 4268616 (1981-05-01), Ogawa et al.
patent: 4278756 (1981-07-01), Bouldin et al.
patent: 4284716 (1981-08-01), Drexler et al.

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