Abstract: Lithographic developer in an automatic photographic film processor is replenished from at least two stable solution concentrates. As each quantity of lithographic film is processed predetermined amounts of the solution concentrates and water are mixed and immediately added to the developer. The solution concentrates, stable before mixing, contain all the constituents needed to replenish the developer solution to maintain activity at a desired level. The amount of each solution concentrate is predetermined from the concentration of each solution concentrate and the quantity and developer requirements of the film. The frequency of replenishment is predetermined from the usage pattern.

Abstract: A method of preparing a bleached phase hologram comprising bleaching a silver image of an amplitude hologram formed in a silver halide photographic material with a bleaching solution comprising a liquid medium capable of swelling the gelatin and/or modified gelatin hydrophilic colloid of the silver halide photographic material to an extent of from about 150 to 400% and containing iodine, so as to bleach the silver image by the reaction of the iodine with the silver and the silver image of the amplitude hologram is formed by exposing a silver halide photographic material so as to form a hologram and development and fixing processing the exposed silver halide photographic material.

Abstract: A photographic developer composition containing (1) a developing agent, (2) a carbonyl-bisulfite, (3) a carbonate and (4) a primary or secondary alkanolamine, the alkanolamine being present in a molar amount less than the amount of said carbonylbisulfite.

Abstract: A method for dispersing organic compounds which are substantially insoluble in water and are used in photographic materials, such as chemical sensitizers (except spectral sensitizing dyes), antifoggants, antioxidants, ultraviolet absorbents, color couplers, coating aids, hardening agents, etc., effectively in a silver halide photosensitive emulsion comprising dissolving the organic compounds in an acid having a pKa of not over about 5, such as methanesulfonic acid, ethanesulfonic acid, etc., and adding the solution to the silver halide photosensitive emulsion directly or after dispersing in an aqueous solution.

Abstract: A photographic developer for high contrast lithographic films comprising a conventional hydroquinone formaldehyde bisulfite developer and a crown compound (cyclic polyether) e.g. dibenzo-30-crown-10.

Abstract: A multilayer color photographic light-sensitive material comprising a support having thereon at least two silver halide emulsion layer units, each of which is sensitive to radiation of a substantially different wavelength region within the wavelength region of from about 220 nm to about 800 nm and contains a color-forming coupler capable of forming a dye on coupling with an oxidized primary aromatic amine developing agent, with at least one of the emulsion layer units containing an ICC coupler represented by the general formula (I) ##STR1## wherein Cp represents a coupler residue; L and M each represents a nitrogen atom or a methine group, V represents a monocyclic or dicyclic aromatic ring of the benzene series, and at least one of L and M represnts a nitrogen atom; which releases a triazole derivative or a diazole derivative on coupling with an oxidized primary aromatic amine developing agent, and with the emulsion layer unit containing the ICC coupler represented by the general formula (I) or another layer

Abstract: The present invention relates to an oil-in-water emulsion which is suitable for processing photographic material. There is present or produced during the processing a substance which exerts its action on the photographic material from the aqueous phase. Contingent on the consumption the active substance is replenished or regenerated from the oily phase. The active substance is more readily soluble in the oily phase than in the aqueous one. The active substance may be, e.g., a dye bleach catalyst for silver dye bleach material or an alkylmercaptan, the latter acting as an antioxidant.

Abstract: A photographic element containing an incorporated developing agent is disclosed which forms a photographic print having a warm image tone upon successive processing in an alkaline activator bath and a stabilizer bath. The element is comprised of a reflective nonporous support bearing a silver halide emulsion layer which forms a viewable silver image therein upon processing. The emulsion layer contains an azaindene antifoggant. The element additionally contains in or adjacent the emulsion layer a warm image tone providing mixture of a quaternary ammonium salt and a silver salt of a heterocyclic mercaptan.

Abstract: Polyoxyethylene compounds carrying thioether groups as substituents on the linear chain are described for accelerating or activating development of exposed silver halide elements.

Abstract: A silver halide photographic lithographic light-sensitive material having high halftone contrast comprising a support having thereon at least one hydrophilic colloid containing layer and containing at least one compound represented by the following formulae ##STR1## wherein R and R' each represents a hydrogen atom or an alkyl group containing from 1 to 18 carbon atoms, m is an integer of 1 or 2, and n is an integer of from 10 to 150, and at least one anionic surface active agent having a sulfonic group.

Abstract: An improved method for adjusting bromide ion concentration in a photographic processing solution is disclosed in which the processing solution is contacted with particles of an insoluble bismuth compound.

Abstract: Method and apparatus for processing dry film. The non-emulsion side of the film is placed in contact with a plate surface that is at or above the developing threshold potential of the film. A second heated plate surface, at the same temperature as the first plate surface, is placed in close non-contiguous relation with the exposed emulsion side of the film whereby the film is heated under adiabatic conditions during processing. The film is removed from the developing region and allowed to cool in air.

Abstract: A black and white developer solution containing o- or p-N-(2-hydroxyethyl)aminophenol as developer substance and a piperazine derivative of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 denotes substituents as described hereinafter capable of developing a certain quantity of film e.g. 10 roll films per liter successively to substantially constant gamma values.

Abstract: Use of the compounds represented by the general formula; ##STR1## (wherein R represents an alkyl group of 1 - 8 carbon atoms) as a permanent solvent for color coupler or ultraviolet ray absorber in color photographic materials.

Abstract: A process for reproducing an original having visible light absorptive image markings on a light transparent background by exposing to visible light passing through the original a normally water-removable heat-sensitive recording layer which consists essentially of a hydrophilic water-removable binder having generally homogeneously distributed therethrough finely divided particles of a hydrophobic thermoplastic polymer normally solid at room temperature together with finely divided material capable of absorbing visible light and converting it into heat and is otherwise generally transparent. The exposure is for a time lasting no longer than 10.sup.-.sup.1 second to visible light of an intensity of at least 0.3 watt, sec. per sq.cm.

Abstract: A sheet material including in working relationship with a reducible silver salt a sterically hindered phenol derivative having the following structural formula: ##STR1##

Abstract: Disclosed are a method and apparatus for processing spent photographic wash water, so that it may be recycled for reuse in the washing step of a photographic developing process, involving passing the spent wash water through an oxidation reaction apparatus to convert any thiosulfate salts in the spent wash water to sulfate salts, and then returning the sulfate water to the developing process for reuse as wash water. In the reactor, the thiosulfate salts in the wash water react in the presence of an oxidation catalyst with oxygen from spent drying air passed to the reactor.

Abstract: In a method for forming an image in a thermally developable photosensitive material which comprises imagewise exposing a thermally developable photosensitive material comprising a support having thereon a layer containing at least (a) an organic silver salt; (b) a catalytic amount of a photosensitive silver halide or a compound capable of forming a silver halide upon reaction with the organic silver salt (a); (c) a reducing agent and (d) a binder and heating the thermally developable photosensitive material, the improvement which comprises stabilizing the image formed by contacting the photosensitive layer of the photosensitive material during or after the heating with a polymer film layer containing a compound represented by the following general formulaX C -- SH or X C = Sin which X represents the non-metallic atoms necessary for forming a heterocyclic ring.

Abstract: Color development of a silver halide photographic element containing dispersed couplers is improved by developing the elements in the presence of an alkyl glycol ether or an aryl glycol ether.

Abstract: A method for processing a photographic light-sensitive material, which comprises developing an exposed silver halide photographic material in a developer containing a developing agent and a dialdehyde compound, and fixing the material in a fixing solution containing (1) a thiosulfate, (2) a water-soluble aluminum salt and (3) at least 0.005 mol/liter of tartaric acid, or a salt thereof, citric acid or a salt thereof, or a mixture thereof.