Photographic system and process

Details Photographic system and process Photographic system and process

1983-09-12

1986-07-01

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Containing developer in element

430265, 430268, 430420, 430423, 430434, 430448, 430465, 430485, 430486, 430490, 430566, G03C 524, G03C 102

Patent

active

045980403

ABSTRACT:
There is provided a developer for use in a one-step process for the development of exposed film resulting in an exposurewise pattern of silver particles which are large enough to be used as printing elements in ink-printing techniques, providing a wide range of densities in the developed film. The developer is based on a buffered system of a developing agent, a sulfinic acid salt of the type HO-R-SO.sub.2.M..times.H.sub.2 O where R is a hydrocarbyl group and M is a cation, and a formaldehyde source, with conventional adjuvants such as anti-fogging agents and the like. Instead of the sulfinic acid salt defined above there may be used any compound which upon dissociation in a aqueous medium results in the same active ionic species.

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Chem. Abst. 162994x, vol. 82, 1975.

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