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US 4,358,531 AGranted
Photographic material, process for the production thereof and process for the production of photographic images
AssigneeAgfa-Gevaert
InventorsAnita von Konig, Franz Moll, Lothar Rosenhahn
Life of this patent
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Abstract
Compounds of the formula ##STR1## wherein the substituents have the meaning indicated in the specification are suitable as latent image stabilizer in silver halide materials.
Claims8
Light-sensitive photographic material containing at least one light-sensitive silver halide emulsion layer and optionally other layers, wherein at least one layer contains a compound corresponding to the following general formula (I) in a quantity of at the most 10.sup.-2 mol per mol of silver halide:
- ##STR10## wherein R.sup.1 represents H, OH or halogen;
- R.sup.2 and R.sup.3, which may be the same or different, represent H, a substituted or unsubstituted alkyl group having from 1 to 4 carbon atoms or acyl;
- R.sup.4 represents H or alkyl having from 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.