Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1991-12-20
1993-11-02
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430223, 430396, 430512, 430606, 430957, G03C 526, G03C 706
Patent
active
052582590
ABSTRACT:
A method of forming an image comprising the steps of (a) imagewise exposing a silver halide photographic material to light substantially having no wavelengths of less than 370 nm, the silver halide photographic material comprising: (i) a support, (ii) at least one light-sensitive silver halide emulsion layer formed on the support, (iii) at least one other hydrophilic colloid layer, and (iv) a redox compound that releases a development inhibitor when oxidized in at least one of the at least one light-sensitive layer or the at least one hydrophilic colloid layer; and (b) processing the exposed silver halide material from step (a) to produce a .tau. value of at least 10.0. The redox compound is a compound represented by formula (I): ##STR1## wherein A.sub.1 and A.sub.2 are preferably both a hydrogen atom; Time represents a divalent linkage group; t represents 0 or 1; PUG represents a development inhibitor; V can represent a carbonyl group; and R represents an aliphatic group, an aromatic group, or a heterocyclic group.
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Inoue Nobuaki
Okamura Hisashi
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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