Light sensitive photographic material containing development inhibitor releasing compounds
AssigneeCiba-Geigy Corporation
InventorsTerence C. Webb, David L. R. Reeves
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Abstract
A light-sensitive photographic material is provided which comprises, coated on a photobase, at least one silver halide emulsion layer, said emulsion layer or a layer adjacent thereto containing a development inhibitor releasing compound of the formula ##STR1## wherein R.sub.1 is substituted phenyl which contains a ballasting alkyl group, R.sub.2 represents the atoms necessary to complete a five or six membered heterocyclic ring system which may be further substituted and R.sub.3 is an aryl or heterocyclic radical, any of which ring systems may be further substituted, the group --S--R.sub.3 being a development inhibiting group.
Claims10
A light-sensitive photographic material which comprises, coated on a photobase, at least one silver halide emulsion layer, said emulsion layer or a layer adjacent
- thereto containing a development inhibitor releasing compound of the formula ##STR15## wherein R.sub.1 is a group of the formulae ##STR16## wherein L is --SO.sub.2 -- or --CO-- and R.sub.4 is a ballasting alkyl group or contains an unsubstituted or substituted ballasting alkyl group of at least 10 carbon atoms, R.sub.2 represents the atoms necessary to complete a tetrazole, triazole, pyrazole or imidazole ring system which is unsubstituted or substituted by alkyl or alkylthio and R.sub.3 is unsubstituted or substituted pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl, triazolyl, pyridyl, phenyl or benzthiazolyl the groups --S--R.sub.3 being the development inhibiting group.
Dependencies are inferred from the claim text.