Internal latent image-type direct positive silver halide light-s

Details Internal latent image-type direct positive silver halide light-s Internal latent image-type direct positive silver halide light-s

1984-10-29

1986-12-16

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430217, 430218, 430603, 430611, 430547, 430940, 430598, 430599, 430604, 430605, 430409, 430410, G03C 134

Patent

active

046296786

ABSTRACT:
An internal latent image-type direct positive silver halide light-sensitive material is described, comprising a support having at least one photographic emulsion layer thereon, wherein said layer contains internal latent image-type direct positive silver halide grains, the surfaces of which are chemically sensitized, wherein a compound of the general formula (I) is added as a finish additive to the photographic emulsion layer or at least one hydrophilic colloid layer adjacent to the photographic emulsion layer.
General Formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are defined as herein. The light-sensitive material exhibits a very satisfactory reversal performance and is greatly improved in stability over the course of time.

REFERENCES:
patent: 4266018 (1981-05-01), Ishiguro et al.
patent: 4284717 (1981-08-01), Toya et al.
patent: 4431730 (1984-02-01), Urabe et al.
patent: 4431731 (1984-02-01), Sugimoto et al.

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