Photographic material, process for the production thereof, process for the production of photographic images and new compounds
AssigneeAgfa-Gevaert
InventorsAnita von Konig, Franz Moll, Hermann Oediger
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Abstract
Compounds of the formula ##STR1## are suitable for the stabilization of the latent image in silver halide photographic materials.
Claims8
A photosensitive material for the production of photographic images containing at least one photosensitive silver halide emulsion layer and, optionally other layers, and having a soluble compound capable of increasing the stability of latent image nuclei in a quantity of from 10 to 5000 mg per mole of silver halide,
- wherein said soluble compound corresponds to the following formula ##STR7## wherein R.sup.1 represents hydrogen, an alkyl group, substituted alkyl group, an acyl group, a substituted acyl group, or a 5- or 6-membered heterocycle.
A process for the production of photosensitive photographic material having at least one layer containing silver halide comprising the steps of
- reacting silver and halide salts to precipitate a silver halide,
- ripening said silver halide in an emulsion,
- incorporating in said emulsion a soluble stabilizing compound in a quantity of from 10 to 5000 mg per mole of silver halide according to the following formula ##STR9## wherein R.sup.1 represents hydrogen, an alkyl group, substituted alkyl group, an acyl group, a substituted acyl group, or a 5- or 6-membered heterocycle and applying the emulsion containing the stabilizer on a layer support.
A process for the production of photographic images in a photographic material including the steps of
- imagewise exposing a photosensitive material containing at least one photosensitive silver halide emulsion layer having a soluble compound capable of increasing the stability of latent image nuclei in a quantity of from 10 to 5000 mg per mol of silver halide and corresponding to the following formula ##STR10## wherein R.sup.1 represents hydrogen, an alkyl group, substituted alkyl group, an acyl group, a substituted acyl group, or a 5- or 6-membered heterocycle
- developing the latent image of the exposed material in a photographic developer
- and providing a developed image.
Dependencies are inferred from the claim text.