Abstract: A method of photographic color processing which comprises a bleach step wherein the bleach solution comprises hydrogen peroxide, or a compound which releases hydrogen peroxide, and halide ions and which has a pH in the range of 5 to 11 and bleach solutions therefore.

Abstract: A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in which the colour material is treated with a colour developing agent in the presence of an oxidantin which a processor is used which comprises means for applying a relatively small volume of processing solution to an imagewise exposed silver halide material and in which the relatively small volume of solution is supplied from a reservoir of relatively large volume and, while processing, the processing solution being used is isolatable from said reservoir and,wherein either a colour developer solution without oxidant or an oxidant solution without colour developing agent is held in the reservoir andwherein the additional oxidant (or colour developing agent) respectively needed for amplification is introduced into the processing solution while it is isolated from said reservoir andwherein the used developer/amplifier so-formed is discarded into said reservoir after use where any unused introd

Abstract: A color image can be obtained from a color photographic element by multiple color development steps. The first color development is carried out in the usual manner after imagewise exposure. The second color development step is carried out after bleaching with a rehalogenating bleaching agent, and is used to develop only rehalogenated silver halide. This specific development is possible by either using a chloride rehalogenating agent in the bleaching solution, using a sulfite fixing agent before bleaching, or by fogging the element between bleaching and the second color development step.

Abstract: A method for replenishing an unstable photographic processing solution is disclosed, including the following replenisher solutions:(1) a color developer replenisher,(2) an oxidizing agent replenisher, and(3) a halide-containing seasoning replenisher (starter solution).The oxidizing agent is not removed from the developer/amplifier after use.

Abstract: A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in wherein colour developing solution is applied to the material in the presence of atmospheric oxygen and a hydroxylamine compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each an alkyl or aryl groups either of which may be substituted, andwherein the colour developer solution is agitated sufficiently for redox amplification to occur.

Abstract: It is known to apply processing solution to photographic material using a high speed moving surface. High speed rotating drums have been used to transfer processing solution from a reservoir to the material. Horizontal belts are also known. However, such arrangements require large volumes of processing solution in order to operate effectively. Described herein is a processor comprising a vertically mounted high speed belt which both transfers processing solution from a reservoir onto photographic paper being processed, and provides agitation at the paper surface. Two transport belts are provided, one on either side of the belt to assist in the transport of paper through the apparatus. An arrangement according to the invention has the advantages that only low volumes of processing solutions are required, good surface agitation is provided, and it can be fitted into conventional photographic processing apparatus.

Abstract: A method of processing an imagewise exposed photographic material in a processing solution which is unstable to the extent that it deteriorates without external reaction in which the photographic material is passed through a tank containing the solution characterized in that the solution is circulated through the tank at a rate of from 0.1 to 10 tank volumes per minute.

Abstract: In photographic processing apparatus in which continuous processing is carried out in a tank having a low volume, it is difficult to obtain sufficient agitation of the processing solution. This problem arises because processing solution adheres to the emulsion surface of the material being processed access of fresh processing solution to the emulsion surface is restricted in the narrow confines of the tank. Described herein is an arrangement in which the agitation of the solution is improved. The arrangement includes an element (16) which is positioned over a feed slot (18) through which processing solution enters the tank (10). The element (16) serves to keep the emulsion surface of the material being processed away from the tank wall and allows access of processing solution to the emulsion surface.

Abstract: A photosensitive photographic silver halide colour material comprising at least two dye image-forming units each separated from its neighbouring units by a layer containing a scavenger for oxidised developing agent, each unit comprising at least one silver halide emulsion layer and at least one dye image-forming colour coupler, the material comprising a total silver halide coating weight of less than 300 mg/m.sup.2 (as silver) characterised in that at least one image-forming unit contains extra gelatin either in a layer adjacent to the coupler-containing layer or in the coupler-containing layer itself such that the gelatin content of the unit is more than 800 mg/m.sup.2, in order to decrease the band width of the dye formed from said coupler.

Abstract: When using unstable processing solutions, high recirculation and/or replenishment rates may be required. However, this may result in non-uniform processing of photographic material in processing apparatus using such solutions. Described herein is apparatus in which agitation members (17) are provided in the processing tank. The members (17) are fixed to a wall (11) of the tank at a location (18). The member (17) has a free end (25) which is positioned to lie against emulsion surface (26) of material (20) being processed (or against inner wall surface (19) if no material (20) is present). As material (20) is moved along path (13).

Abstract: When using unstable processing solutions, high recirculation and/or replenishment rates may be required. However, when replenisher is added to a processing tank, a noticeable drop in the temperature of the processing solution may occur. Such a drop in temperature may lead to variable photographic sensitometry of the material being processed. Described herein is apparatus in which temperature control means (28) are provided to ensure that the temperature of the solution being added to the processing tank does not produce such a temperature drop.

Abstract: The invention provides a photographic element comprising a paper substrate with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating, and at least one light sensitive silver halide emulsion above the hydrophilic colloid layer, wherein said hydrophilic colloid layer comprises a removable antihalation material and from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 um.

Abstract: A method of forming a dye image in a photographic silver halide element containing a dye-providing compound and having in a layer thereof an imagewise distribution of catalytic silver which comprises the step of treating the material with a redox amplifying solution comprising a reducing agent and a redox amplification oxidant characterized in that the redox amplification oxidant is removed from the solution after use and the so-treated solution is re-used after the addition of fresh redox amplification oxidant.

Abstract: The invention provides a photographic element comprising a paper substrate with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating, and at least one light sensitive silver halide emulsion above the hydrophilic colloid layer, wherein said hydrophilic colloid layer comprises a removable antihalation material and from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 .mu.m.

Abstract: The present invention is directed to a method of processing imagewise exposed photographic color silver halide materials in which, after the dye image is formed, the photographic material is treated with an aqueous stabilizing solution containing iodide ions but no fixing agent.

Abstract: A method for processing photographic silver halide color negative film and color negative paper each through its own color developing solutions wherein the paper color developing solution is replenished and the overflow from this replenished solution is used to replenish the film color developing solution and wherein (a) the color paper is based on substantially pure silver chloride emulsions and contains no more than 1% molar silver bromide based on total silver halide and (b) both color developing solutions and the replenisher are free from benzyl alcohol.Apparatus for carrying out the above-described method comprises a series of processing stations and means for advancing the photographic material being processed through the apparatus wherein there is provided means for collecting the overflow from the paper developer station and means for passing it directly or indirectly to the film processing station.

Abstract: A method of forming a photographic azo or azamethine dye image in an exposed photographic silver halide element, the method of comprising the steps of (a) developing the imagewise exposed material to form an imagewise pattern of oxidized color developing agent, (b) reacting the oxidized color developing agent with a color coupler to produce an image dye, characterized in that at least one of the color developing agent and the color coupler possesses a metal chelating site such that the image dye is capable of forming a bi-, tri- or higher-dentate metallized dye, and (c) contacting the image dye with polyvalent metal ions to form a metallized dye image. Specified color developing agents include heterocyclic substituted hydrazides and specified couplers include benziso-oxazolones and 2H-pyrazolo-[3,4-b]pyridines in addition to more conventional compounds.

Abstract: A method is disclosed of photographically processing a negative-working imagewise exposed silver halide photographic element to produce a reversal dye image comprising (a) developing the imagewise exposed silver halide with an electron transfer agent to produce oxidized electron transfer agent which reacts with a competing oxidizable substance and (b) developing silver halide remaining with the electron transfer agent in the presence of a dye image providing compound capable, after the competing oxidizable substance has been depleted, of reacting with the oxidized electron transfer agent to produce a reversal dye image. Image transfer film units are disclosed useful in the practice of this method. Such film units include those containing in addition to the competing oxidizable substance and initially immobile dye image providing compound a layer containing additional silver halide and a scavenger separating the additional silver halide from the immobile dye image providing compound.