Abstract: A photographic aqueous processing solution containing at least one solid compound that has a maximum solubility therein corresponding to a desired operating level, which solution is kept in equilibrium with the solid form of the compound, thus maintaining its concentration at the desired level without the need for a replenishing system.

Abstract: A photographic aqueous processing solution containing at least one solid compound that has a maximum solubility therein corresponding to a desired operating level, which solution is kept in equilibrium with the solid form of the compound, thus maintaining its concentration at the desired level without the need for a replenishing system.

Abstract: An aqueous redox amplifier composition comprising a color developing agent, hydrogen peroxide or a compound which provides hydrogen peroxide and hydroxylamine or a salt thereof wherein the concentration ranges are: hydrogen peroxide from 0.5 to 10 ml/l (as 30% w/w solution), hydroxylamine or a salt thereof from 0.25 to 5.5 g/l (as hydroxylamine sulphate), and wherein the pH is in the range from 10.5 to 12.

Abstract: An aqueous redox amplifier composition comprising a color developing agent, hydrogen peroxide or a compound which provides hydrogen peroxide and a hydroxylamine compound of the formula: ##STR1## or a salt thereof wherein R.sup.1 and R.sup.2 are each a substituted or unsubstituted alkyl group of 1-4 carbon atoms and wherein the concentration ranges are:hydrogen peroxide from 0.5 to 10 ml/l (as 30% w/w solution),hydroxylamine compound from 0.5 to 15 ml/l (as an 85% solution of diethylhydroxylamine), and wherein the pH is in the range from 10.5 to 12.

Abstract: A photographic aqueous processing solution containing at least one solid compound that has a maximum solubility therein corresponding to a desired operating level, which solution is kept in equilibrium with the solid form of the compound, thus maintaining its concentration at the desired level without the need for a replenishing system.

Abstract: A process for the development of an imagewise exposed photographic material having at least one silver halide layer, comprises forming an image therein in a solution that contains a developing agent, that is replenished. The process is carried out in an apparatus comprising at least one processing tank in which the ratio of the tank volume to maximum area of material accommodatable therein is less than 20 dm.sup.3 /m.sup.2. Substantially all replenishers are added as solids directly to said developer.

Abstract: A redox amplification process with minimal steps includes processing a silver halide with an amplifier/bleach/fix solution that includes a redox oxidant capable of bleaching a silver image and a fixing agent that does not react with the redox oxidant.

Abstract: A process for the formation of a dye image by a redox amplification process in an imagewise exposed photographic color material having at least one silver halide layer and associated therewith a dye image-forming color coupler, comprises treating the material in a color developer solution containing a color developing agent and hydroxylamine as developing agent preservative. The color developing solution is replenished directly as solids or liquid concentrates with or without additional water. The process is carried out in a tank in which the ratio of the tank volume to maximum area of material accommodatable therein is less than 11 dm.sup.3 /m.sup.2.

Abstract: An aqueous redox amplifier solution having a pH in the range 10.0 to 13.5 comprises:a color developing agent and/or auxiliary developing agent, hydrogen peroxide or a compound that provides hydrogen peroxide in a concentration equivalent to 0.1 to 50.0 ml/l of 30% w/w solution, anda borate or other complexing compound capable of reversibly forming a complex with hydrogen peroxide, the complexing compound being in a concentration of from 1.0 to 100.0 g/l, andwherein the relative amounts of complexing compound and hydrogen peroxide are such as to provide an amount of hydrogen peroxide effective for redox amplification and buffer the hydrogen peroxide and thereby reduce the decline in the rate of redox amplification. This solution is useful for processing color photographic elements.

Abstract: A redox-amplification solution comprising hydrogen peroxide, or a substance capable of releasing hydrogen peroxide, or reducing agent, such as a color developing agent, and in combination three or more sequestering agents for complexing with a transition metal ion to inhibit catalysis of impurities emanating from a photographic film coating and enhance the stability of the solution; a method of photographic color processing including a step using the redox-amplification solution and its use therefor.

Abstract: A method of redox amplification processing of a photographic color material in which the image-forming step takes place in a developer-amplifier solution containing both a photographic color developing agent and an oxidant contained in a processing tank of comparatively small volume (the processing tank). A developer-amplifier replenisher solution which is stable over an idle period of 48 hours, is provided from a tank of comparatively large volume (the reservoir) holding sufficient for replenishment over a predetermined extended period of time at a rate which is greater than 160 ml/m.sup.2 of material processed. The overflow from the processing tank is returned to the reservoir where additions are made in a predetermined manner from water and/or one or more of four solutions comprising color developing agent concentrate, oxidant concentrate, buffer concentrate and anti-oxidant concentrate.

Abstract: An aqueous redox amplifier solution having a pH in the range 10.0 to 13.5 comprises:a color developing agent and/or auxiliary developing agent,hydrogen peroxide or a compound that provides hydrogen peroxide in a concentration equivalent to 0.1 to 50.0 ml/l of 30% w/w solution, anda borate or other complexing compound capable of reversibly forming a complex with hydrogen peroxide, the complexing compound being in a concentration of from 1.0 to 100.0 g/l, andwherein the relative amounts of complexing compound and hydrogen peroxide are such as to provide an amount of hydrogen peroxide effective for redox amplification and buffer the hydrogen peroxide and thereby reduce the decline in the rate of redox amplification. This solution is useful for processing color photographic elements.