Abstract: A process for forming a dye image on a receiving element by diffusion transfer from a photosensitive element is disclosed wherein the exposed photosensitive element is processed with an alkaline solution in the presence of a particular dye developer having at least one azo radical.

Abstract: Color photographic elements, compositions, diffusion transfer film units and processes are described which employ a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol which is preferably alkali-cleavable upon oxidation to release a diffusible color-providing moiety.

Abstract: A color photographic material for, in particular, a color diffusion transfer process having at least one silver halide emulsion layer having associated therewith a dye releasing redox compound shown by the formula ##STR1## wherein G represents a hydroxyl group or a group yielding a hydroxyl group by hydrolysis, Col represents a dye or a group yielding a dye by hydrolysis, R represents an alkyl group or an aromatic group, X represents a substituent comprising an electron donating group or substituents, which may be same or different, at least one of which comprises an electron donating group, and n is 1, 2, or 3, where X moieties may form a condensed ring (excluding an aromatic hydrocarbon ring) with each other or with OR, wherein the total carbon number of Xn and R is more than 8.

Abstract: Color photographic elements, diffusion transfer film units and processes are described which employ nondiffusible o-sulfonamidonaphthols which are alkali-cleavable upon oxidation to release a diffusible color-providing moiety.

Abstract: In electrophotographic copying processes use is made of a reproduction element comprising on a conductive support a photoconductive layer containing dispersed in a binder a bisazo naphthol compound having a certain structure of substituents whereby the reproduction element exhibits relatively high light-sensitivity and is repeatedly exposable and developable imagewise so as to be useful for indirect electrophotographic copying. Special binder compositions enhance the light-sensitivity of the element and special layer constructions are provided to suit it for certain uses.

Abstract: A color photographic material having a silver halide emulsion layer and containing a thioether compound which is reactable on chromogenic development thereby releasing a diffusible substance which inhibits the development of the silver halide.The thioether compound is a homophthalimide containing a removable mercapto group containing moiety in the 4-position and its nitrogen in the 2-position atom being a tertiary nitrogen.

Abstract: In one embodiment, the present invention relates to novel heterocyclic compounds as represented in the following formula ##STR1## wherein R and R' each are hydrogen or alkyl, Y is .dbd.O or .dbd.NH and n is a positive integer from 1 to 7.In another embodiment, the present invention is directed to the use of the above-denoted class of heterocyclic compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.

Abstract: A diffusible-dye releasing type dye consisting of a radical which reacts with an oxidation product of a color developing principal agent in a color development process to yield a substantially colorless compound and a dye residue carrying water-soluble radicals. Its photographic uses are also disclosed.

Abstract: A yellow dye developer having improved photographic properties represented by the formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an acylamino group having 1 to 4 carbon atoms; Z represents an atomic group necessary for completing a furan ring or a benzofuran ring; Y represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms; Ar represents an aromatic ring; R.sub.1 represents a hydrogen atom, a halogen atom, an acyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 5 carbon atoms; R.sub.2 represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms with the R.sub.2 group being at the ortho-position to the azo group; m and n each is an integer of 1 to 4; and at least one of X, Z, Ar and R.sub.

Abstract: A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer and one of said layers having associated therewith a yellow image dye-releasing compound having a formula as follows ##STR1## wherein Car represents a sulfonamidophenol or sulfonamidonaphthol carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye from said compound.X represents a bivalent linking group of the formula --R.sup.1 --L.sub.n --R.sup.1.sub.p -- where each R.sup.

Abstract: Photographic elements are disclosed which contain a blocked development restrainer which is designed to provide timely release of a development restrainer when the photographic element is processed with an alkaline processing composition. The photographic elements are especially useful in image-transfer film units where the blocked development restrainers will permit initial development to occur and, upon cleavage, will substantially restrain further development.

Abstract: A dye developer for silver halide photography comprising both a dye moiety represented by the following general formula (I): ##STR1## wherein R represents a halogen atom or an alkyl group containing 1 to 4 carbon atoms; k is an integer of from 0 to 4; A represents an acyl group containing 1 to 4 carbon atoms or an alkoxyacyl group containing from 2 to 4 carbon atoms; Ar represents an aromatic nucleus; X represents a halogen atom, an alkyl group, an alkoxy group, an acyl group or an acyloxy group, each containing 1 to 4 carbon atoms and l is an integer of from 0 to 4; and a polyhydric phenol moiety having silver halide developing activity.

Abstract: A dye developer represented by the following general formula (I), ##SPC1##wherein X is a hydrogen atom, a bromine atom, a nitro group, an acylamino group, a hydroxyl group or an alkyl group having not more than 4 carbon atoms; n is 1, 2 or 3; Y is an acyl group having not more than 4 carbon atoms; and Ar is a mono- or polyaryl group; and wherein an aromatic ring can be condensed in the 4-and 5-positions of the furan ring nucleus, and at least one of X, the aromatic ring condensed with the furan ring nucleus and Ar being directly connected to or being connected through an atom or an atomic grouping to a polyphenol having developing activity for silver halide.

Abstract: A dye developer represented by the following general formula (I): ##EQU1## WHEREIN X represents the atoms necessary for completing a monocyclic or polycyclic aromatic group; Y represents an acyl group having 1 to 4 carbon atoms; Ar and Z each represents a monocyclic polycyclic aromatic group, with Ar being connected either directly or through a divalent atom or group to a polyhydric phenol moiety having a silver halide developing action; R represents an alkyl group or an alkoxy group; n represents an integer of 0 to 4; and Q represents ##EQU2## wherein Z' represents a hydrogen atom or an alkyl group, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aliphatic group, or R.sub.2 and R.sub.3 can combine to form a divalent aliphatic group and a light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer with the dye developer of this invention associated therewith.

Abstract: Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to immobile compounds which can be used to provide positive images from negative recording-developing photographic materials such as negative silver halide emulsions. The compounds contain a photographically useful group such as a dye or dye precursor and are capable of releasing said photographically useful group under alkaline conditions, and are also capable of reaction with an oxidized silver halide developing agent before substantial release of said photographically useful group occurs, to provide a reaction product having a substantially lower rate of release of said photographically useful group. In specific embodiments, the compounds of this invention contain an electrophilic cleavage group located in the linkage between a ballast group and a photographically useful moiety wherein said electrophilic cleavage group is a carbamic acid derivative.

Abstract: Novel azo magenta dye-providing compounds and photographic elements containing such compounds are described. The present compounds contain a carrier moiety which, as a function of oxidation under alkaline conditions, provides a substance having a mobility different than that of the starting compound.

Abstract: A color diffusion transfer photographic light-sensitive material which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide combined with a dye developer, one of the light-sensitive silver halide emulsion layers being combined with a dye developer represented by the following General Formula (I); ##EQU1## wherein Ar represents a divalent aromatic group; X represents ##EQU2## with R being an alkyl group having 1 to 3 carbon atoms, --NHCO-- with the nitrogen atom being connected to the Ar group or --OCO-- with the oxygen atom being connected to the Ar group; and Y represents an aromatic group having a substituent containing a hydroquinonyl group.

Abstract: Azo dye-providing compounds and photographic materials containing such compounds are described. The present compounds, as a function of photographic processing under alkaline conditions, provide a dye substance having a mobility different than that of the compound.

Abstract: Stabilized oxichromic compounds are disclosed, along with processes for stabilizing oxichromic compounds. In one aspect, the stabilized compounds are O-acylated compounds which contain a reduced azomethine linkage. In another aspect, the stabilized compounds are O-acylated compounds which can undergo base catalyzed chromogenic oxidation to produce a yellow dye.

Abstract: The present invention is directed to novel photographic products for use in color diffusion transfer systems wherein at least one of the layers of the film unit contains an amount of a glucoside humectant effective to stabilize the silver halide emulsion(s) thereof against fog during storage.

Abstract: Polyazo dyestuffs of the formulaA--N=N--M--D--M'--N=N--A'wherein A and A' each represents a 2(8)-amino-8(2)-hydroxynaphthalene radical further substituted with a sulphonic acid group, M and M' each represents a substituted 1,4- or 1,3-phenylene radical and D represents an organic radical bonded in the manner of an amide to M and M', said dyestuffs containing at least two sulphonic acid groups in the molecule, as well as photographic material containing in at least one layer a polyazo dyestuff of the above formula are described.