Adsorbable arylhydrazides and applications thereof to silver...

Details Adsorbable arylhydrazides and applications thereof to silver... Adsorbable arylhydrazides and applications thereof to silver...

G - Physics

03

C

96/32, 96/91, 26

G03C 1/38 (2006.01) G03C 1/06 (2006.01) G03C 1/28 (2006.01) G03C 1/485 (2006.01)

Patent

CA 1224481

ADSORBABLE ARYLHYDRAZIDES AND APPLICATIONS THEREOF TO SILVER HALIDE PHOTOGRAPHY Abstract of the Disclosure The use of oxythioamido substituted aryl- hydrazides in producing images in silver halide photographic elements is disclosed. The oxythio- amido substituted arylhydrazide can be incorporated in photographic silver halide emulsions. The oxythioamido substituent is capable of promoting adsorption of the arylhydrazide to silver halide grain surfaces. In negative working surface latent image forming emulsions the oxythloamido substituted arylhydrazides permit higher speeds to be achieved. In direct positive internal latent image forming emulsions increased nucleation activity can be achieved.

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