Process for preparing negative images

Details Process for preparing negative images Process for preparing negative images

1986-05-22

1988-04-26

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

430487, 430490, 430478, 430482, 430486, 430441, 430442, 430265, 430267, 430949, 430445, 430446, 430448, 430268, G03C 530

Patent

active

047404523

ABSTRACT:
The present invention provides a process for preparing a negative image of high contrast comprising developing an exposed silver halide photographic material which is substantially a surface latent image-type material in the presence of a hydrazine derivative, wherein said material is processed with a water-soluble alkaline developer having a pH value of from 10.5 to 12.3 and at least comprising the following components (1) through (3):

REFERENCES:
patent: Re29111 (1977-01-01), Masseth
patent: 2388816 (1942-06-01), Bean
patent: 4224401 (1980-09-01), Takeda et al.
patent: 4232112 (1980-11-01), Kuse
patent: 4269929 (1981-05-01), Nothnagle
patent: 4298673 (1981-11-01), Kubotera et al.

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