Photographic high contrast silver halide material

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

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430414, 430415, 430416, 430571, G03C 112, G03C 1295

Patent

active

057362955

ABSTRACT:
A density enhancing amine compound is incorporated into a silver halide element containing both spectrally sensitized and non-spectrally sensitized silver halide grains in the emulsion layer.

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patent: 5589318 (1996-12-01), Dale et al.
The Journal of Photographic Science, Jan./Feb. 1975, vol. 23, No. 1, pp. 23-31, XP002017444. Beels and Claes "Additional Formation of Silver as a Result of an Infectious Development of Silver Halide Emulsions:

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