Abstract: A compound (I) having a carrier moiety (CAR) and a releasable development inhibitor moiety (INH) capable of being released during photographic processing by means of at least one timing group (T) bonded to and releasable from the carrier moiety provides improved images in a photographic silver halide element and process when the inhibitor moiety (INH) comprises (R.sup.1) a non-aromatic, sterically hindered substituent group having (a) a tertiary carbon atom bonded directly to the releasable development inhibitor moiety or (b) a secondary carbon atom bonded directly to the releasable development inhibitor moiety and wherein the secondary carbon atom is not part of an unsubstituted carbocyclic ring containing at least 6 carbon atoms. Such compounds, particularly as couplers, are useful in photographic silver halide materials and processes to provide improved acutance and interimage effects.

Abstract: The present invention provides a photographic silver halide emulsion containing at least two grain surface modifiers. The grain surface modifiers comprise a transition metal complex containing a transition metal chosen from Groups V to X, inclusive, of the periodic table and a nitrosyl or thionitrosyl ligand; and a transition metal selected from Group VIII of the periodic table.

Abstract: The present invention provides a photographic emulsion comprising silver halide grains, a dopant, and a grain surface modifier. The dopant is a transition metal selected from Group VIII of the periodic table. The grain surface modifier is characterized in that it comprises a transition metal complex having nitrosyl or thionitrosyl ligands with a transition metal selected from Groups V to X of the periodic table.

Abstract: A photographic silver halide material and process comprises at least one image dye-forming coupler and at least one coupler (A) represented by the formula SOL-COUP-LINK-PUG wherein SOL is a water solubilizing amide group, COUP is a naphtholic coupler moiety that, upon reaction with oxidized developer is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic material during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing; and wherein LINK is a carbamate linking group comprising a photographic ballast group on the nitrogen atom of the carbamate group. Such a photographic silver halide material enables formation of improved images.

Abstract: A method and an apparatus for treatment of liquid wastes from photographic processes are described, in which the wastes to be treated are(a) subjected to an oxygen oxidation as well as(b) an ozone oxidation,(c) optionally from the oxidized wastes halide ions are removed,(d) the wastes, from which optionally halide ions are extensively removed, are subjected to an anodic after-oxidation as well as(e) a cathodic reduction, then(f) neutralized and(g) set free from precipitated solids by filtration.The invention allows an especially effective reduction of damaging substances which are obtained in photographic processes.

Abstract: A photographic silver halide emulsion comprised of a silver halide grain structure containing chloride, bromide and iodide ions in which the molar ratio of bromide ions to chloride ions ranges from 9:1 to 1:1 and the proportion of iodide has been increased.

Abstract: A process for preparation of a 2,3 or 4-oxo-benzaldehyde or ketone compound by reaction of a 2,3 or 4-hydroxy benzaldehyde or ketone with an ortho, meta or parabromo or chloralkylphenoxy compound comprises reaction of the bromo or chloroalkylphenoxy compound with potassium iodide to form an iodo compound in situ; then, reaction of the resulting product with a 2, 3 or 4-hydroxybenzaldehyde or ketone in the presence of alkylpyridine and a dipolar aprotic solvent. The resulting compounds are useful for formation of photographic color couplers for use in photographic materials.