Photographic speed increasing and latent image stabilizing compo

Details Photographic speed increasing and latent image stabilizing compo Photographic speed increasing and latent image stabilizing compo

1981-11-12

1983-03-29

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430551, 430600, 430614, G03C 176, G03C 134

Patent

active

043784267

ABSTRACT:
Photographic silver halide emulsions show increased speed and reduced latent image fading when a compound of the following structure is incorporated: ##STR1## wherein: X is -O-, -S-, -Se-, or ##STR2## Y represents the atoms completing a fused aromatic nucleus; Z is ##STR3## R is hydrogen or lower alkyl of from 1 to 5 carbon atoms.

REFERENCES:
patent: 3764339 (1973-10-01), Himmelmann et al.
patent: 3910791 (1975-10-01), vonKonig et al.
patent: 3954478 (1976-05-01), Arai et al.
patent: 4115122 (1978-09-01), Adachi et al.
patent: 4256830 (1981-03-01), Jager et al.
patent: 4277557 (1981-07-01), Jager et al.
Kuwabara and Iwai, "Effects of Acetylenic Derivatives on Photographic Emulsions", Bulletin of the Soc. of Scientific Photog. of Japan, No. 16, Dec. 1966, pp. 14-23.

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