Process for forming contrasty image

Details Process for forming contrasty image Process for forming contrasty image

1979-07-05

1980-12-02

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

430446, 430264, 430267, 430567, 430599, 430613, 430949, G03C 530

Patent

active

042372143

ABSTRACT:
A process for forming a very contrasty negative photographic image which comprises developing a photographic light-sensitive material comprising a support having thereon at least one layer of a negative image monodispersed silver halide photographic emulsion comprising substantially surface latent image type silver halide grains, wherein the average grain size of the silver halide grains is 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of 250 g or less per mol of silver halide, and at least one hydrographic colloid layer containing a compound represented by the following general formula (I):

REFERENCES:
patent: 2131038 (1938-09-01), Brooker et al.
patent: 2410690 (1946-11-01), Smith et al.
patent: 2694716 (1954-11-01), Allen et al.
patent: 3730727 (1973-05-01), Olivares et al.
patent: 3782949 (1974-01-01), Olivares et al.

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