Method of forming a high-contrast photographic image

Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product

Patent

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Details

430267, 430423, 430425, 430438, 430439, 430440, 430441, 430442, 430445, 430446, 430599, 430600, 430603, 430949, G03C 530

Patent

active

042726069

ABSTRACT:
A method of forming an extremely high-contrast negative photographic image which comprises image-wise exposing a photographic light-sensitive material comprising a support having thereon a mono-disperse silver halide emulsion layer containing surface latent image type silver halide grains and also containing a compound represented by the following general formula (1):

REFERENCES:
patent: 3386831 (1968-06-01), Honig
patent: 3730727 (1973-05-01), Olivares et al.
patent: 3782949 (1974-01-01), Olivares et al.

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