Abstract: A method of removing silver chloride from a photographic silver halide material during processing which comprises treatment with an aqueous fixing solution containing an alkali metal sulphite as sole silver halide solvent. to remove substantially all of silver chloride in less than 50 seconds.

Abstract: Photographic emulsions, particularly those produced by a silver halide reaction, are concentrated and, optionally, washed in a 2-stage ultrafiltration system. The system includes a spiral wound ultrafiltration module and a plate and frame ultrafiltration module. Serial use of these two ultrafiltration systems permits the viscosity of the resulting emulsion to be increased, at commercial scale production levels, to a level suitable for curtain coating photographic substrates.

Abstract: Photographic elements are described havinga silver halide emulsion layer,a pyrazoloazole coupler in reactive association with said silver halide emulsion, anda competitor for oxidized developer in reactive association with said coupler having the formula: ##STR1## R.sup.1 represents an electron donating group, R.sup.2 represents hydrogen, alkyl, alkoxy, aryl, aryloxy, aralkyl or amino of the formula --NHR.sup.3, where R.sup.3 is phenyl or benzyl, with the proviso that at least one of the substituents R.sup.1 and R.sup.2 (a) represents a ballast group of sufficient size as to render the hydrazide compound non-diffusible in the photographic element prior to developement in alkaline processing solution and (b) comprises a polar group, andn is 0, 1 or 2.

Abstract: Novel photographic filter dyes are immobile as incorporated in a photographic element, but during processing, are uniformly converted to a form which is removable from the element. 2 The filter dye is represented by the structure:DYE--LS--BALwhere:BAL is a ballast group;DYE is a filter dye moiety;LS is a splittable linking group attached to a position in DYE that is not in conjugation with the dye chromophore.

Abstract: Photographic elements are described havinga silver halide emulsion layer,a 2-equivalent 5-pyrazolone coupler is reactive association with said silver halide emulsion, anda competitor for oxidized developer in reactive association with said coupler having the formula: ##STR1## wherein R.sup.1 represents an electron donating group,R.sup.2 represents hydrogen, alkyl, alkoxy, aryl, aryloxy, aralkyl or amino of the formula --NHR.sup.3, where R.sup.3 is phenyl or benzyl, with the proviso that at least one ofthe substitutents R.sup.1 and R.sup.2 (a) represents (1) a ballast group of sufficient size as to render the hydrazide compound non-diffusible in the photographic element prior to development in alkaline processing solution and (b) comprises a polar group, andn is 0, 1 or 2.

Abstract: In the hopper coating of liquid compositions on moving webs, as in the coating of photographic layers on film supports, the trapping of solid particles or bubbles in the hopper slots causes line defects or streaks in the coated layers. These defects are avoided or reduced by determining the conditions under which the composition can be flowed through one or through a plurality of adjacent slots of the coating hopper at slot Reynolds numbers less than about 10 and flowing the composition through such slot or slots under said conditions.

Abstract: Photographic elements are described containing polymeric dye-forming couplers in which the polymer contains coupler moieties that upon reaction with oxidized color developing agent yield dyes of a least two different hues. In one embodiment a neutral dye is formed. In another embodiment a minor proportion of one coupler moiety is used to modify or current the spectral absorption characteristics of another coupler moiety.

Abstract: A copolyester is synthesized by reacting a dialkyl ester of an aromatic dicarboxylic acid (e.g., dimethyl terephthalate) with ethylene glycol, low molecular weight poly(ethylene glycol) and a salt of a sulfonic acid-substituted aromatic dicarboxylate (e.g., sodium sulfoisophthalic acid) simultaneously in a first stage reaction in the presence of a phosphite or phosphate stabilizer. The intermediate product of the first stage is further reacted in a second stage in the presence of a polycondensation catalyst to obtain a random copolyester of the desired molecular weight. The copolyester is extruded to form a film which, after orientation and heat setting, has excellent clarity and is useful as a photographic film support. Aqueous processing of the film relaxes any core set or curl.

Abstract: There is described a system and method for reproducing an original record using a narrow band filter, such as a dichroic filter, to modify the contrast of the reproduction without modifying the color balance or the wavelength peak of sub-records. The system is particularly useful in reproducing motion picture records using subtractive lamp houses so as to have their contrast and color reproduction match records generated using additive lamp houses.

Abstract: This invention relates to novel photographic dye-forming coupler compounds which are non-diffusible as incorporated in a photographic element, but which, during processing, are converted to a form which is removable from the element if the coupler compound has not reacted with oxidized silver halide color developing agent.

Abstract: A magenta dye-forming coupler for photographic material is disclosed. The coupler is a polymer derived from a monomer having the formula: ##STR1## R.sub.1 represents hydrogen or a substituent, X represents hydrogen or a group capable of being released by a coupling reaction with an oxidized aromatic primary amine developing agent,Z represents the atoms necessary to complete a heterocyclic ring,L represents a divalent linking group,A represents --CONH--, --COO--, --O--, --OOC--, --NHCO--, --NHCONH--, --NHSO.sub.2 --, or a substituted or unsubstituted phenylene group,D represents --O--, --NR"--, or --CONR"--,R represents a substituted or unsubstituted aliphatic or a substituted or unsubstituted aromatic substituent, having at least 6 carbon atoms,R' represents H, substituted or unsubstituted lower alkyl of from 1 to 4 carbon atoms, carboxyl, or halogen, andR" represents substituted or unsubstituted: alkyl, aryl, or acetyl.

Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.

Abstract: This invention relates to novel photographic dye-forming coupler compounds which are non-diffusible as incorporated in a photographic element, but which, during processing, are converted to a form which is removable from the element if the coupler compound has not reacted with oxidized silver halide color developing agent.

Abstract: There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of:providing a photographic element comprising a support having thereon a silver halide emulsion unit capable of forming a yellow image, a silver halide emulsion unit capable of formign a cyan image, and a silver halide emulsion unit capable of forming a magnenta image, each image-forming unit having a maximum spectral sensitivity at a different wavelength of radiation, and at least one of the image-forming units having a gamma as described herein,receiving image data representing the densities of the yellow, magenta, and cyan records of the original image,modifying said image data and using it to control three exposure sources, each emitting radiation in the region of maximum spectral sensitivity for a corresponding one of the image-forming units, so that, after exposure, the recorded image density range for at least one of

Abstract: Photographic materials contain cyan dye forming couplers having good ethyl acetate solubility. The coupler contains a coupling off group with an asymmetric carbon atom. Manufacture of the material is simplified and in some instances the activity of the coupler is increased.

Abstract: There are described color photographic elements containing novel release compounds which rapidly release a photographically useful group, such as a development inhibitor, from a timing group.

Abstract: A color photographic material with good photographic performance, such as sharpness, speed and granularity, contains a development inhibitor releasing compound having the structure: ##STR1## wherein: CAR is a carrier moiety;TIME is a timing group; andINH is a development inhibitor moiety,in association with a cyan dye-forming coupler having the structure: ##STR2## wherein: R.sup.1, R.sup.2, R.sup.3, Q, Z, Y, m, and n are as defined in the specification.

Abstract: The low intensity reciprocity failure characteristics of a silver halide emulsion are improved, without significant reduction of high intensity speed, by incorporating iridium ion into the silver halide grains after or toward the end of the precipitation of the grains in such a way that iridium is below the surface of the grains.

Abstract: Color photographic elements comprise a support, a silver halide emulsion layer and a polymeric dye-forming coupler comprising a polyester condensation polymer having a pendant coupler moiety in which the coupler is joined via its coupling position.

Abstract: There is described a photographic element in which increased exposure latitude is obtained by having a dye-forming coupler in a non-light-sensitive interlayer between two light-sensitive silver halide emulsion layers. One of the silver halide emulsion layers is sensitive to a first region of the spectrum and contains a dye-forming coupler that forms a dye complementary in color to the region of the spectrum to which that layer is sensitive. The second emulsion layer is sensitive to a second region of the spectrum and contains a second coupler that forms a dye complementary to the second region of the visible spectrum. The exposure latitude in the layer sensitive to the first region of the spectrum is increased when the coupler in the interlayer forms a dye complementary in color to the second region of the spectrum, but as a function of development in the first region of the spectrum.