Abstract: A process for treating a photographic processing waste solution which comprises:placing a polymer precipitate in a lower portion of a tank having a U-shaped treating space which comprises (i) a first partition, (ii) a second partition and (iii) an interconnecting partition for interconnecting the first partition and the second partition in the lower portion of a tank;introducing into the first partition a photographic processing waste solution containing a processing solution having fixing ability which has processed a silver halide photographic material;treating the photographic processing waste solution in the U-shaped treating space in the presence of a polymer having S atom which can coordinate with a metal; andremoving the metal in said photographic processing waste solution.

Abstract: A method of removing silver from a solution containing silver halide and silver ion is described, which comprises a step of adding an a sulfur atom-containing hydrophilic polymer chelating agent to the solution.

Abstract: A process for coating development of a silver halide color photosensitive material is provided which comprises coating the silver halide color photosensitive material with a color developer to form a thin film. This process is characterized in that a developer containing a p-phenylenediamine developing agent having a group capable of imparting hydrophilic properties which developer has an ionic strength of 0.8 or below and an electric potential of the immersion bath of -280 mV or below is applied to the photosensitive material to form a coating film which is at most 20 times as thick as the dry photosensitive layer of the photosensitive material.

Abstract: There is disclosed a method for recovering silver from photographic processing solution by electrolysis, in which method the cathode potential is set at a potential range wherein a precipitate of silver sulfide is formed in the electrolytic cell. According to the method, intensive silver recovering leading to low concentration of residual silver in the solution is achieved. Structure of electrolytic apparatus enabling easy separation of silver sulfide precipitates is also disclosed. Application of lead peroxide to the material of anode improves the life of the anode. Further advantages of the method are remarkable decreases in COD and iron contents of waste solution.

Abstract: A method for forming an intensified color image by subjecting a silver halide color photographic material exposed imagewise to light, to color-development processing that uses a monobath development-intensifying solution containing hydrogen peroxide or a compound that releases hydrogen peroixide and a color-developing agent is disclosed. According to the color-intensifying method silver-saving can be attained using a greatly reduced amount of a processing solution.

Abstract: A color image is formed by imagewise exposing a color photosensitive material comprising at least a silver halide and a coupler and subjecting the material to intensified development with a processing solution containing a reducing agent and an intensifier. A substantially water-insoluble basic metal compound is previously contained in the silver halide based color photosensitive material, while the processing solution contains a compound capable of complexing reaction with the metal ion of the substantially water-insoluble basic metal compound to release a base.

Abstract: A color image is formed by subjecting a silver halide photosensitive material comprising at least a photosensitive silver halide, a two equivalent coupler, a binder, and a substantially water-insoluble basic metal compound on a support, to development with a processing solution comprising a complexing compound capable of complexing reaction with the metal in ionic form of said substantially water-insoluble basic metal compound in the presence of water to release a base.

Abstract: A silver halide color photographic light-sensitive material is disclosed, comprising a support having provided thereon light-sensitive silver halide emulsion layers, wherein on the outside of the light-sensitive silver halide emulsion layer positioned farthest from the support, a layer containing silver halide fine grains of about 0.2.mu. or less in average grain size is provided, and in the silver halide color photographic light-sensitive material at least one compound represented by the following general formula (I) is present: ##STR1## wherein M represents a hydrogen atom, an alkali metal or a quaternary ammonium group, X represents COOM' or SO.sub.3 M' (wherein M' represents a hydrogen atom, an alkali metal or a quaternary ammonium group), n represents 1 or 2, R.sub.1 represents a group capable of substituting on the phenyl group, and m represents 0, 1 or 2.

Abstract: A process for forming a color image is disclosed. The process involves providing a color light-sensitive photographic material and imagewise exposing the material. The latent images within the exposed material are then developed and subjected to intensification processing. Thereafter, the material is subjected to treatment with a dilute buffer solution having a pH adjusted within the range of 2 to 7. The process allows for the elimination of the washing step conventionally used in processing photographic materials. Furthermore, the process provides color images having a reduced amount of staining and a large intensification factor while utilizing color photographic materials containing an extremely small amount of silver.

Abstract: A lithographic type diffusion transfer developing composition which provides high contrast images having sharp toe-gradation for developing silver halide light-sensitive materials contains at least one amine represented by one of the following general formulae (I), (II) or (III):H.sub.2 N-C.sub.n H.sub.2n -X (I) ##STR1## X, X', R.sub.1, n and m are defined in the specification. The process of developing using such a composition is also disclosed.

Abstract: A photographic process for forming photographic images comprising processing a photographic element comprising a support and at least a silver halide photographic emulsion layer having image-wise distributed therein a material possessing a catalytic action with a cobalt (III) complex with a photographic processing solution containing at least a cobalt (III) complex having a coordination number of 6 in the presence of a primary aromatic amine developing agent, in which the formation of fog is prevented by contacting the photographic processing solution with one side of a fine open-cell porous diaphragm of a hydrophobic material, such as a porous Teflon film, the other side of which is in contact with an acid solution, whereby fogging components in the processing solution are removed from the processing solution into the acid solution through the porous diaphragm.

Abstract: Developer compositions for diffusion transfer photographic materials containing amino compounds and imidazole compounds are used in a diffusion transfer photographic process for obtaining litho-type positive images of high contrast and of good short toe effect, the amino compounds being represented by the following formula I and the imidazole compounds by the following formula II:formula I(a) NH.sub.2 --C.sub.m H.sub.2m --Xwherein X represents a hydrogen atom, hydroxyl group, carboxyl group or amino group, and m represents a natural number of 0-12, but X represents a hydroxyl group when m is 0, ##STR1## wherein X and X' represent each a hydrogen atom, hydroxyl group, carboxyl group or amino group, and m and each represents a natural number of 0-12, but X and/or X' represents a hydroxyl group when m and/or n is 0. ##STR2## WHEREIN Y represents an oxygen atom, --CH.sub.

Abstract: High-contrast photographic images are obtained by developing with a developer containing at least one dihydroxybenzene and sulfite ion and then treating with a solution of an oxidizing agent.

Abstract: Ferricyanide and/or ferrocyanide ions are effectively removed from waste photographic treating solutions by contacting the solutions with weakly basic anion exchange resins. Improved results are obtained with the salt form of the weakly basic anion exchange resin when contacting takes place in the presence of a compound having a buffering action at a pH of 5 to 9, e.g., in the presence of boric acid, metaboric acid or a water soluble borate. Upon regeneration of the anion exchange resin the eluted ions can be reused as a photographic processing solution, e.g., a bleaching solution, with the addition of make up components.

Abstract: Image intensifying solutions containing cobalt (III) complex salts can be regenerated through concentration by means of reverse osmosis.

Abstract: A process for electrolyzing a bleach-fixed solution, or blix solution, used in processing color photographic materials, which contains originally an iron (III) chelate compound and a silver halide solvent in an electrolytic bath and separating the cathode compartment and the anode compartment of the electrolytic cell with a porous membrane and controlling the anode potential so that the silver halide solvent does not decompose. Embodiments include use of a carbon fiber as the anode and also controlling the cathode potential and the current densities of the cathode and the anode.

Abstract: In a method for developing, bleaching and fixing an exposed silver halide photographic material, the improvement which comprises bleaching the photographic material with a bleaching solution containing a ferric salt, then processing the photographic material with a solution containing an organic acid.

Abstract: A photographic developer composition for obtaining high contrast images which comprises (1) a dihydroxybenzene developing agent, (2) an alkanolamine and (3) a compound having the following formula (I) ##SPC1##wherein R.sub.1 and R.sub.2 each represents a lower aliphatic hydrocarbon group, wherein R.sub.1 and R.sub.2 may combine to form a ring, n represents 0 or 1, and X.sup..crclbar. represents an anion.

Abstract: A high contrast, high density color image is formed on a silver halide photosensitive monochromatic, e.g., irradiated by X-rays, by subjecting the photosensitive material to coupling or color development with a developer solution containing a p-phenylene diamine developing agent and 1-phenyl-3-pyrazolidone and then, without desilverization, to fixing. The coupler may be contained in the silver halide photo-emulsion or in a developing solution.

Abstract: A method for processing a silver halide color photographic material which comprises the steps of, after color-developing, processing the silver halide color photographic material with a bleaching bath, and then processing with a fixing bath, wherein the bleaching bath has a pH value of from 2.5 to 5.5 and contains a (1,3-diaminopropane-tetraacetato)iron(III) complex salt in an amount of at least 0.2 mol/liter and an organic acid in an amount of at least 0.5 mil/liter, and the fixing bath contains at least one compound selected from formulae (I), (II), (III), (IV), and (V):R.sup.1 --(X--R.sup.3).sub.m --X--R.sup.2 (I)wherein m represents 0 or an integer of from 1 to 4; R.sup.1 and R.sup.2 each represents a substituted or unsubstituted alkyl group; R.sup.3 represents a substituted or unsubstituted alkylene group, provided that when m is 2 or more, the R.sup.3 groups in each of the (X--R.sup.3) segments may be the same or different; and X represents sulfur, oxygen, ##STR1## wherein Z represents ##STR2## --OR.