Eastman-Kodak Company

Jeffrey K Green

Zoe Orr

Anthony Earle

Leslie R Wells

Anthony M Barnett

Julie Baker

Colin J Gray

David A Hallbery

Christiane B Feumi-Jantou

Photographic processing apparatus comprises a combination of a surface processing stage and a replenishable tank processing stage. This allows advantage to be taken of the low quantities of processing solution that are characteristic of surface processing and the total immersion that is characteristic of tank processing.

Processing photographic material

Photographic material is processed in a sequence of stages by the application of solution to an upper surface thereof as the material is carried on endless belts beneath respective coated roller arrangements. Each roller arrangement is movably mounted in a slot so that the point along the stage at which the solution is applied to the photographic material can be varied, thereby to vary the time for which the material is subject to the processing treatment.

A method for processing a silver halide photographic material comprises the steps of developing, fixing and washing the photographic material. The fixing step is carried out using a fixing solution comprising thiosulfate ions, and the washing step is carried out by washing the material with an aqueous solution containing an oxidizing agent capable of reacting with thiosulfate. The oxidizing agent is present in an amount sufficient to precipitate any silver in the solution.

Method of processing a silver halide photographic element

The present invention concerns a novel method of processing a photographic product. In particular, method includes processing a photographic product that comprises a step of surface washing with a solution comprising an oxidizing agent, and a wetting agent. This processing method affords effective washing with a reduced quantity of water.

Method of processing a photographic product

A fixing composition for processing a silver halide photographic material comprises a fixing agent, a sulfite stabilizer, an acid and a buffer. The composition has a pH greater than 5.4 and the buffer comprises at least 2.0 mol/l ammonium acetate.

Photographic fixing composition

Black-and-white silver halide photographic materials are processed with the use of a processor which requires no silver recovery means, no water supply and no drain. The photographic material is transported through a series of processing tanks including a developer tank, one or more fixer tanks, and one or more wash or stabilizer tanks. Replenishment of the fixing solution is controlled so that the rate of replenishment of the fixer tank is a function of the level of one or more chemicals in the last tank through which the material is transported.

Method of processing photographic silver halide materials

Silver image bleaching solution and process

An aqueous lithographic conditioner solution or fix composition for use with lithographic plates made by the silver salt diffusion transfer process comprises (a) an oleophilic argentophile, (b) a quaternary ammonium surfactant and (c) a quaternary ammonium surfactant solubilized by the addition of alkyleneoxy units, the proportions and nature of the components being such as to provide the desired solution.

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Harrow, United Kingdom

Jeffrey K Green