Reversal processing methods for black and white photographic lig

Details Reversal processing methods for black and white photographic lig Reversal processing methods for black and white photographic lig

1979-09-26

1982-03-30

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430454, 430461, 430462, 430487, 430489, 430379, G03C 550

Patent

active

043224938

ABSTRACT:
A reversal development processing method for black and white silver halide photographic light-sensitive materials which comprises bleaching an imagewise exposed black and white silver halide photographic light-sensitive material with a bleaching solution containing at least one oxidizing agent capable of forming a water-soluble silver salt when reacted with the silver images of said exposed light-sensitive material in the presence of at least one bleach accelerating agent selected from the compounds represented by the general formulae (I) to (VIII) described in the specification.

REFERENCES:
patent: 3576633 (1971-04-01), Henn et al.
patent: 3617283 (1971-11-01), Ohi et al.
patent: 3640717 (1972-02-01), Gallet et al.
patent: 4108661 (1978-08-01), Vanassche et al.
Hornsby: Photographic Chemistry, vol. one, Fountain Press, London, May 20, 1960.

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