Abstract: A method for forming an image with diffusion transfer of silver salts comprising processing a photosensitive element in the presence of a fogging agent.

Abstract: A process for forming an image by silver salt diffusion transfer comprising developing a light-sensitive element which comprises a support having provided thereon a light-sensitive silver halide emulsion layer which has been imagewise exposed to light by an alkaline processing composition in the presence of a silver halide solvent so that at least a part of silver halide unexposed in said emulsion layer is converted to a transferable silver complex salt, and then transferring at least a part of said silver complex salt to an image-receiving layer containing a silver precipitating agent to form an image on said image-receiving layer, wherein the concentration of said silver precipitating agent in said image-receiving layer is in the range of from 2.times.10.sup.-6 to 8.times.10.sup.-6 mol/m.sup.2 and at least one of said light-sensitive element and said alkaline processing composition contains at least one of a compound represented by formula (I) and a compound represented by formula (II) ##STR1## wherein R.

Abstract: An image-receiving material for a silver salt diffusion transfer process is described, comprising a support having provided thereon an image-receiving layer containing physical development nuclei, wherein the image-receiving layer contains gelatin, a water-soluble fluorescent brightening agent, and a water-soluble vinyl polymer, wherein the weight ratio of the water-soluble fluorescent brightening agent to the gelatin ranges from about 0.02/1 to about 0.5/1 and the weight ratio of the water-soluble vinyl polymer to the water-soluble fluorescent brightening agent ranges from about 0.1/1 to 5/1.

Abstract: Disclosed is a processing composition for silver complex diffusion transfer process which contains the following constituents (A) to (E) or (A) to (F):______________________________________ (A) MOH (M is an alkali metal) 0.05-0.2 mole/l (B) an alkanolamine 0.25-0.7 mole/l (C) a sulfite 0.4-0.7 mole/l (D) a thiosulfate 0.03-0.08 mole/l (E) a p-dihydroxybenzene .gtoreq.0.07 mole/l (F) a benzotriazole 10.sup.-4 -10.sup.-2 mole/l, ______________________________________the sum of (A) and (B) being 0.4 to 0.8 mole/l and the molar ratio of (B) to (A) being above 2.0. This composition can produce images and tone without scumming.

Abstract: There is disclosed a processing solution for silver complex diffusion transfer process which contains at least one amino alcohol having a pKa value of less than 9 and at least one amino alcohol having a pKa value of 9 or more which are measured in a 50 wt % aqueous ethanol solution at 25.degree. C.

Abstract: The present invention relates to a composition for processing, by the silver salt diffusion transfer technique, a photographic material which contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development. The composition contains about 0.03 mol/l to about 0.10 mol/l of a phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR1## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.2 and R.sup.3 are each a hydrogen atom or a hydroxyl group, respectively; m and n are each 0 or 1, provided that m and n are not 0 at the same time. The processing composition allows for obtaining a high contrast image by the silver salt diffusion transfer technique.

Abstract: In a process for forming an image by diffusion transfer, this process for forming an image comprises performing the diffusion transfer by using a hydroxylamine represented by the formula: ##STR1## as a developing agent, and using a cyclic imide as a silver halide solvent in the presence of a 1-aryl-3-pyrazolidinone compound represented by the formula: ##STR2##

Abstract: A self-contained silver halide diffusion transfer imaging sheet is provided which contains three layers on a substrate. The first layer is a silver halide emulsion formed in a non-ionic material. The intermediate layer is a water barrier. The third layer is a nucleating region which contains collodial silver. A developer, base and silver transport agent can also be located in these layers. For example, the base and silver transport agent can be located in the nucleating layer, with the developer located in the emulsion layer. After the emulsion is exposed to actinic radiation, a non-aqueous activating medium is supplied which initiates the development and diffusion transfer processes. The final result is a positive image in the nucleating layer.

Abstract: A self-contained silver halide diffusion transfer imaging sheet is provided which contains three layers on a substrate. The first layer is a silver halide emulsion formed in a non-ionic material. The intermediate layer is a water barrier. The third layer is a nucleating region which contains colloidal silver. A developer, base and silver transport agent can also be located in these layers. For example, the base and silver transport agent can be located in the nucleating layer, with the developer located in the emulsion layer. After the emulsion is exposed to actinic radiation, a non-aqueous activating medium is supplied which initiates the development and diffusion transfer processes. The final result is a positive image in the nucleating layer.

Abstract: This application relates to the use of certain dihydro-benzotriazine compounds as photographic silver halide developing agents and to photographic processes, products and compositions which utilize the same. The compounds are effective developers in acid environment as well as in basic environment. Also described are novel dihydro-benzotriazine compounds.

Abstract: Photographic silver halide material suitable for use in the silver complex diffusion transfer reversal process for the production of a continuous tone positive silver image (sensitometric curve I of the drawing) on an image-receiving material and a continuous tone negative silver image (sensitometric curve II of the drawing) in the photographic silver halide material itself, wherein the negative silver image is usable per se for serving as an internegative in a photographic printing process. In the photographic material on each side of a transparent support a silver halide emulsion layer high in silver chloride is present with a different developing agent composition to yield from the two emulsion layers together the total silver image density and average gradient desired in the negative image.

Abstract: This invention relates to amino hydroxy cyclohexenones of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each are alkyl, usually containing 1 to 20 carbon atoms.In another embodiment, the present invention is directed to the use of the above-denoted compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.

Abstract: The present invention relates to novel bicyclic compounds useful as photographic silver halide developing agents, to the preparation of these compounds and to photographic products, processes and compositions employing the same. The subject compounds may be represented by the formula ##STR1## wherein R.sub.1 and R.sub.2, the same or different, each represents hydrogen, a hydrocarbon moiety, preferably an alkyl group, --COOH or --COOR.sup.1 wherein R.sup.1 is an alkyl group; R.sub.3 and R.sub.4, the same or different, each represent hydrogen or an alkyl group, R.sub.5 represents hydrogen or --COR.sup.2 wherein R.sup.2 is an alkyl group; R.sub.6 represents hydrogen when R.sub.5 is hydrogen and represents hydrogen or --OCOR.sup.3 wherein R.sup.3 is an alkyl group the same as R.sup.2 when R.sub.5 represents --COR.sup.2 ; X represents --OH, --NH.sub.2 or --NHCOR.sup.4 wherein R.sup.4 represents an alkyl group the same as R.sup.2 ; Y represents --OH or --OCOR.sup.5 wherein R.sup.

Abstract: Transfer silver images high in maximum density, contrast and sharpness and small in dependency on developing temperatures are obtained by image wise exposing and developing a diffusion transfer light sensitive material which comprises a support having thereon at least a carbon black-containing layer and a silver halide emulsion layer present on said carbon black containing layer, said carbon black-containing layer and/or layer adjacent thereto containing 3-pyrazolidone compound represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are hydroxyalkyl or alkyl group of 1-4 carbon atoms, at least one of R.sub.1 and R.sub.2 being hydroxyalkyl group and R.sub.3 is an aryl group.

Abstract: A processing composition adapted for use in a silver diffusion transfer process which includes a saturated polyol containing at least 3 hydroxyl groups wherein each hydroxyl group is no more than 3 carbon atoms away from another hydroxyl group.

Abstract: A black-and-white negative image forming process is disclosed using a diffusion transfer type film unit. An exposed silver halide emulsion comprising internal latent image type silver halide grains which have substantially no fogging centers at their surface is processed with a composition comprising a silver halide solvent, a developing agent, a foggant, alkali and a fog promoting agent. The solvent for the silver halide characteristically possesses a solubilizing power for AgBr of from about 2.times.10.sup.-5 to 5.times.10.sup.-3 mol/l in a 0.002 molar aqueous solution.

Abstract: A lithographic type diffusion transfer developing composition which provides high contrast images having sharp toe-gradation for developing silver halide light-sensitive materials contains at least one amine represented by one of the following general formulae (I), (II) or (III):H.sub.2 N-C.sub.n H.sub.2n -X (I) ##STR1## X, X', R.sub.1, n and m are defined in the specification. The process of developing using such a composition is also disclosed.

Abstract: A processing composition adapted for use in a silver diffusion transfer film unit which comprises an aqueous alkaline solution, a silver halide developing agent and a surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 repeating units of ethylene oxide per hydrophobe.

Abstract: A photographic material suited for use in the silver complex diffusion transfer process and comprising at least one water-permeable layer and including a hydrophilic colloid silver halide emulsion layer in which the silver halide comprises a mixture of silver chloride and silver iodide and/or silver bromide, at least 90 mole % based on the total molar weight of the silver halide being silver chloride, and the ratio by weight of hydrophilic colloid to silver halide expressed as silver nitrate is between about 3:1 and about 10:1, wherein said at least one of the water-permeable layers contains a mixture of developing agents comprising an o-dihydroxybenzene and a 3-pyrazolidinone, the molar amount of the o-dihydroxybenzene in the mixture being larger than the molar amount of the 3-pyrazolidinone.