Color developer concentrate for color film processing

An aqueous, homogeneous, single-part color developing concentrate having a pH of from about 10 to about 11 and comprising:

• a) from about 0.05 to about 0.25 mol/l of 4-(N,N-diethyl)-2-methylaniline hydrochloride, 4-(N-ethyl-N-methanesulfonamidoethyl)-2-methylaniline sesquisulfate, or 4-(N-ethyl-N-β-hydroxyethyl)-2-methylaniline sulfate, each in free base form,
• b) from about 0.05 to about 0.25 mol/l of an organic antioxidant composition for said color developing agent that consists essentially of N,N-diethylhydroxylamine, N,N-bis(ethylenesulfonato)hydroxylamine, N,N-bis(2,3-dihydroxypropyl)-hydroxylamine, or N-isopropyl-N-ethylsulfonatohydroxylamine,
• c) a water-miscible or water-soluble co-solvent that is ethylene glycol, n-propylene glycol, diethylene glycol, di-n-propylene glycol, triethylene glycol, 1,2-butanediol, glycerol, 1,3-butanediol, or a mixture thereof, and is present in said concentrate at a concentration such that the weight ratio of water to said organic co-solvent is from about 1.5:1 to about 2.5:1,
• e) a carbonate buffering agent, and
• f) from about 0.005 to about 0.15 mol/l of tetramethyl ammonium chloride, tetraethyl ammonium chloride, tetra-n-propyl ammonium, chloride, tetra-n-butyl ammonium chloride, ethyltrimethyl ammonium chloride, n-propyltrimethyl ammonium chloride, n-butyltrimethyl ammonium chloride, 2-hydroxy-ethyltrimethyl ammonium chloride, or a mixture thereof.

A photographic processing chemical kit comprising:

• I) an aqueous, homogeneous, single-part color developing concentrate having a pH of from about 9 to about 13 and comprising:
• a) from about 0.05 to about 0.35 mol/l of an N,N-dialkyl-p-phenylenediamine color developing agent in free base form,
• b) from about 0.01 to about 0.5 mol/l of an organic antioxidant composition for said color developing agent that comprises an N,N-dialkyl- or N,N-diarylhydroxylamine derivative, and
• c) a water-miscible or water-soluble organic co-solvent that has a molecular weight of from about 100 to about 400, is present in said concentrate at a concentration such that the weight ratio of water to said organic co-solvent is from about 1:1 to about 3:1, and
• d) from about 0.002 to about 0.25 mol/l of a quaternary ammonium salt that is tetramethyl ammonium chloride, tetraethyl ammonium chloride, tetra-n-propyl ammonium, chloride, tetra-n-butyl ammonium chloride, ethyltrimethyl ammonium chloride, n-propyltrimethyl ammonium chloride, n-butyltrimethyl ammonium chloride, 2-hydroxy-ethyltrimethyl ammonium chloride, or a mixture thereof, and
• II) one or more of the following compositions:
• a photographic bleaching composition,
• a photographic bleach/fixing composition,
• a photographic fixing composition, or
• a photographic stabilizing or final rinsing composition.

A method for providing a color photographic image comprising:

• A) contacting a color negative or color reversal photographic silver halide film with a color developing solution that is obtained by diluting, at least 2.5 times, an aqueous, homogeneous, single-part color developing concentrate having a pH of from about 9 to about 13 and comprising:
• a) from about 0.05 to about 0.35 mol/I of an N,N-dialkyl-p-phenylenediamine color developing agent in free base form,
• b) from about 0.01 to about 0.5 mol/l of an organic antioxidant composition for said color developing agent that comprises an N,N-dialkyl- or N,N-diarylhydroxylamine derivative, and
• c) a water-miscible or water-soluble organic co-solvent that has a molecular weight of from about 100 to about 400, is present in said concentrate at a concentration such that the weight ratio of water to said organic co-solvent is from about 1:1 to about 3:1, and
• d) from about 0.002 to about 0.25 mol/l of a quaternary ammonium salt that is tetramethyl ammonium chloride, tetraethyl ammonium chloride, tetra-n-propyl ammonium, chloride tetra-n-butyl ammonium chloride, ethyltrimethyl ammonium chloride, n-propyltrimethyl ammonium chloride, n-butyltrimethyl ammonium chloride, 2-hydroxy-ethyltrimethyl ammonium chloride, or a mixture thereof.