Infra-red laser beam sensitive recording material

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product

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430944, 430945, 430270, 3461351, G11B 724

Patent

active

051697440

ABSTRACT:
A recording material suited for forming a direct-read-after-write image by laser beam radiation, which recording material contains in a recording layer a naphthoquinonimine dye either or not in admixture with a hydrophobic polymer, characterized in that said naphthoquinonimine dye is present in the recording layer in microcrystalline state having a particle size in the range of 0.01 to 0.1 micron hereby showing an absorption maximum situated in the 800 to 880 nm wavelength range, the weight ratio of said dye to said polymer being in the range from 1/99 to 100/0.

REFERENCES:
patent: 4178183 (1979-12-01), Ciurca et al.
patent: 4513071 (1985-04-01), Mey
patent: 4737443 (1988-04-01), Niwa et al.
patent: 4839267 (1989-06-01), Monbaliu et al.
patent: 5030544 (1991-07-01), Olbrechts et al.
patent: 5079061 (1992-01-01), Hashida et al.
Research Disclosure 28945, May 1988, Monbaliu et al., pp. 293-295.

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