Abstract: A photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of an intercalation composition comprising a layered host material having molecules of the photographically useful compound inserted as guest molecules between the layers of the host material. The invention provide novels materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element with improved stability and keeping response versus known methods for incorporating active chemistry compounds.

Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers further comprising, an electron transfer agent releasing compound represented by the formula (I): CAR1—(L)n—ETA  (I) wherein: CAR1 is a carrier moiety which is capable of releasing —(L)n-ETA on reaction with oxidized developing agent; L is a divalent linking group, n is 0, 1 or 2; and ETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent having a calculated log partition coefficient (c log P) greater than or equal to 2.40 and the total sum of the Hammett sigma(para) values of the substituents on the 1-aryl ring is 0.

Abstract: A photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of an intercalation composition comprising a layered host material having molecules of the photographically useful compound inserted as guest molecules between the layers of the host material. The invention provide novels materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element with improved stability and keeping response versus known methods for incorporating active chemistry compounds.

Abstract: This invention relates to a photographic element comprising a support and at least two silver halide emulsion layers further comprising an electron transfer agent releasing compound represented by the formula (I):

Abstract: In accordance with one embodiment of the invention, a photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein sequestered silver ions are incorporated into at least one hydrophilic colloid layer in the form of a silver ion containing material which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions. Method for preparing and processing such photographic element are also described. In accordance with particular embodiments of the invention, the silver ion containing material comprises a silver ion-exchanged zeolite material or an intercalation composition comprising a layered host material having silver ions inserted as guest ions between the layers of the host material.

Abstract: In accordance with one embodiment of the invention, a photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein sequestered silver ions are incorporated into at least one hydrophilic colloid layer in the form of a silver ion containing material which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions. Method for preparing and processing such photographic element are also described. In accordance with particular embodiments of the invention, the silver ion containing material comprises a silver ion-exchanged zeolite material or an intercalation composition comprising a layered host material having silver ions inserted as guest ions between the layers of the host material.

Abstract: The invention relates to an emulsion comprising tabular grains of greater than or equal to about 3.7 .mu.m area weighted mean equivalent circular diameter and thiourea sensitizer having the structural formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3, and R.sub.4 independently can represent an alkylene, cycloalkylene, carbocyclic arylene or heterocyclic arylene, alarylene or aralkylene group; or taken together with the nitrogen atom to which they are attached, R.sub.1 and R.sub.2 or R.sub.3 and R.sub.4 can complete a 5- to 7-member heterocyclic ring; andeach of A.sub.1, A.sub.2, A.sub.3, and A.sub.4 independently is hydrogen or represents a carboxylic, sulfinic, sulfonic, hydroxamic, mercapto, sulfonamido or primary or secondary amino nucleophilic group;with the proviso that at least one of A.sub.1 R.sub.1 to A.sub.4 R.sub.4 contains a nucleophilic group bonded to a urea nitrogen atom through a 2- or 3-member chain.

Abstract: The invention is generally accomplished by providing a method of chemical sensitization comprising providing a silver halide emulsion, and adding to the silver halide emulsion aqueous solid particle dispersion of a chemical sensitizing agent having a water and organic solvent insolubility (i.e., 50 mg/100 ml or less), and heating said emulsion wherein said chemical sensitizing agent comprises at least one member selected from the group consisting of gold compounds represented by Formula I:{AuS.sub.2 X}.sub.n IwhereinX is PR.sub.2 (dithiophosphinates), P(OR).sub.2 (dithiophosphates), COR (xanthates), CNR.sub.2 (dithiocarbamates), CR (dithiocarboxylates)R is alkyl or aryln=1-6,tellurium compounds represented by Formula II:TeL.sub.n X.sub.2whereinL is thiourea or substituted thiourea,n is 2 or 4,X is Cl, Br, I, OCN, SCN, SeCN, TeCN, or N.sub.3 andFormula IIA ##STR1## wherein X is COR, CSR, CNR.sub.2, CR, CAr, PR.sub.2, P(OR).sub.2, (PR.sub.2).sub.

Abstract: The invention is generally accomplished providing a silver halide emulsion comprising silver halide grains and a gold compound represented by Formula I:{AuS.sub.2 X}.sub.nwhereinX is PR.sub.2 (dithiophosphinates), P(OR).sub.2 (dithiophosphates), COR (xanthates), CNR.sub.2 (dithiocarbamates), CR (dithiocarboxylates)R is alkyl or aryln=1-6.

Abstract: A silver halide photographic element comprising a silver halide emulsion in reactive association with a compound of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently an aryl, alkyl or arylalkyl group; and wherein Z represents the atoms necessary to form a 5 or 6 membered heterocyclic ring and contains at least one atom selected from N, O, S, and Se; and methods of making same.

Abstract: A light sensitive photographic element is disclosed having a support bearing at least one light sensitive silver halide emulsion layer and at least one non-light sensitive stress absorbing layer between the emulsion layer and the support, wherein the stress absorbing layer comprises a polymer and a hydrophilic colloid in a mass ratio of greater than or equal to about 1:2, the polymer having a glass transition temperature of less than about 5.degree. C. It has been found that pressure fog can be substantially reduced while maintaining scratch resistence when such a stress absorbing layer is present.

Abstract: A light sensitive photographic element is disclosed having a support bearing at least one light sensitive silver halide emulsion layer, an overcoat layer, and at least one non-light sensitive stress absorbing layer between the emulsion layer and the overcoat layer, wherein the stress absorbing layer comprises a polymer and a hydrophilic colloid in a mass ratio of greater than or equal to about 1:1, the polymer having a glass transition temperature of less than about 5.degree. C. It has been found that pressure fog can be substantially reduced when such a stress absorbing layer is present.

Abstract: A method for controlling pressure-induced fog in a silver bromide photographic material involves surface treatment of the emulsion AgBr grains with thiocyanate and an iodide salt. In particular, a process for making a pressure fog-resistant photographic emulsion includes steps of forming a photographic emulsion containing cubic or cubooctahedral silver bromide grains, surface-treating the AgBr grains with a thiocyanate by adding the thiocyanate to the emulsion, chemically sensitizing the emulsion, maintaining the emulsion at a temperature and for a time sufficient to allow the thiocyanate to react with the grain surfaces, and then surface-treating the AgBr grains with an iodide salt by adding the salt to the emulsion in an amount and under conditions effective to fill in cubic faces of the AgBr grains. The latter step partially or fully converts the AgBr grains to octahedral grains. A photographic element can then be made by coating the emulsion on a suitable base.

Abstract: A method for controlling pressure-induced fog in a silver bromide photographic material involves surface treatment of the emulsion AgBr grains with thiocyanate and an iodide salt. In particular, a process for making a pressure fog-resistant photographic emulsion includes steps of forming a photographic emulsion containing cubic or cubooctahedral silver bromide grains, surface-treating the AgBr grains with a thiocyanate by adding the thiocyanate to the emulsion, chemically sensitizing the emulsion, maintaining the emulsion at a temperature and for a time sufficient to allow the thiocyanate to react with the grain surfaces, and then surface-treating the AgBr grains with an iodide salt by adding the salt to the emulsion in an amount and under conditions effective to fill in cubic faces of the AgBr grains. The latter step partially or fully converts the AgBr grains to octahedral grains. A photographic element can then be made by coating the emulsion on a suitable base.