Abstract: A silver halide light-sensitive photographic material having a support and provided thereon, hydrophlic colloidal layers including at least one silver halide light-sensitive emulsion layer is disclosed. The silver halide emulsion layer comprises a silver halide emulsion (I) prepared by adding a high-molecular flocculant under at least one of Conditions (1) through (3) to a silver halaide emulsion (II) prepared by a water-soluble silver salt solution and a water-soluble halide solution to a protevtive colloid solution so as to flocculate and settle a silver halide grain together with a protective colloid for desalting of dissolved substances, and by dispersing again the desalted silver halide emulsion in a protective colloid solution;Condition (1): a temperature of the silver halide emulsion (II) is not lower than 30.degree. C.

Abstract: A silver halide photographic material is described, containing at least one polymer, which functions as both a color fogging preventing agent and a color mixing preventing agent, obtained by polycondensation of at least one compound represented by formula (I) and at least one compound represented by formula (II): ##STR1## wherein G represents hydroxyl group, a group capable of forming hydroxyl group by alkali hydrolysis, a carbonamido group or a sulfonamido group;n represents an integer of 1 or more, provided that when n is 2 or more, plural G's may be same or different;R.sup.1 and R.sup.2 each independently represents hydrogen atom or a substituent; andR.sup.3 and R.sup.4 each independently represents hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a heterocyclic group, an acyl group, a carboxyl group, or a formyl group,in the presence of an acid or alkali catalyst.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one hydrophilic colloid layer at least one of which must be a gold- and sulfur-sensitized silver halide emulsion layer, said silver halide emulsion layer containing from 0.1 to 3.0 mol % silver iodide per mol of silver, wherein said silver halide emulsion comprises silver halide grains having a substantial core/shell structure wherein the silver iodide content in the shell is less than that in the core, and the silver halide emulsion layer or other hydrophilic colloid layer contains a polymer represented by the formula (I)--(A).sub.x (B).sub.y (C).sub.

Abstract: A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, at least one layer of the material containing the combination of a water-insoluble homopolymer or copolymer which has an amido bond in the repeating unit and at least one compound represented by formula (I): ##STR1## wherein X represents an alkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amido group or a sulfonamido group; R.sup.1 and R.sup.2, which may be the same or different, each represents an alkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amido group, a sulfonamido group, hydrogen, a halogen atom, a sulfo group, a carboxyl group, a carbamoyl group, a sulfamoyl group, an acyl group or a sulfonyl group, provided that R.sup.1 and R.sup.2 may be linked to form a carbocyclic ring; and Y represents a hydroxyl group or a sulfonamido group.

Abstract: A silver halide photographic light-sensitive material which has an excellent gradation and an excellent pressure resistance. The photographic material comprising a support and, provided thereon, a photographic component layer including a silver halide emulsion layer in which the sewlling degree of said photographic component layer is not higher than 150 and said silver halide emulsion layer is added with elementary sulfur.

Abstract: 3-Aminoallylidenemalononitrile compounds corresponding to the formula: ##STR1## wherein R.sub.1 is a short alkyl chain having 1 to 3 carbon atoms and R is a substituted or unsubstituted long alkyl chain greater than 10 carbon atoms, are useful in photography for absorbing ultraviolet radiations in the range from 360 to 400 nm, with no undesired absorption near 420 nm, when introduced in a photographic gelatin layer.

Abstract: Photographic recording materials of which the binder layers consist of protein-like binders which have been hardened in the usual way show reduced susceptibility to the effect of formaldehyde when--in addition to the usual hardeners--low molecular weight monofunctional compounds which are capable of reacting with free primary amino groups of the binder under casting and/or storage conditions without causing additional hardening are allowed to act on the binder.

Abstract: A silver halide photographic material is disclosed, which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing a latex which has been stabilized by a protective colloid which is at least one substance selected from among natural water-soluble polymers, derivatives thereof, and synthetic hydrophilic polymers having at least one nonionic group and at least one anionic group in the molecular structure.

Abstract: A silver halide photosensitive material comprising at least one silver halide photographic emulsion layer provided on at least one side of a support, said photosensitive material containing in the photographic emulsion layer and/or another component layer (i) a polymer having repetitive units represented by formula (II), dextran or mixtures thereof, and (ii) at least one cationic compound containing quaternary nitrogen: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group with 1 to 6 carbon atoms; R.sup.2, and R.sup.3 each represents hydrogen, or, an unsubstituted or substituted alkyl, aryl or aralkyl group having up to 10 carbon atoms, or R.sup.2 and R.sup.3 are bonded to each other to form a nitrogen-containing heterocyclic ring; m represents 1 or 2; n represents 0 or 1; and L represents a linking group of the valence m+1.

Abstract: A silver halide photographic material is disclosed, comprising a support having at least two hydrophilic colloid layers on one side of a support, at least one of said hydrophilic colloid layers containing dextran having an average molecular weight of at least 100,000, wherein at least one hydrophilic colloid layer containing substantially no dextran and having a dry thickness of at least 1.0 .mu.m exists between the hydrophilic colloid layer containing the dextran disposing nearest to the support and the support.

Abstract: Compositions and films are provided for the preparation of electrostatic printing masters. The composition binder permits use of aqueous silver halide photographic techniques to image the master for printing, and exhibits insulation properties needed for electrostatic printing under typical conditions of relative humidity.

Abstract: Image-receiving material for use in diffusion transfer reversal processing comprising a polyvinyl chloride resin support coated with a hydrophilic waterpermeable layer comprising a proteinaceous colloid and a water-dispersible ionogenic polyester-polyurethane wherein isocyanate groups still present in its structure have reacted with an ionogenic compound containing at least one active hydrogen atom and a carboxylate or sulphonate salt group. This material is useful for the production of tamper proof laminates for identification purposes.

Abstract: Aqueous photographic coating solutions comprising a gelatino silver halide emulsion, a synthetic polymer latex and a compound of the general formula ##STR1## where E.sup.1 and E.sup.2 represent the end groups of the polymer chain, R is an alkyl group or phenyl, R.sup.1 is a polyether moiety, M is a monovalent cation or hydrogen and x is 3 to 200, the ratio of this compound to the synthetic polymer being from 0.1 to 50 of this compound to 100 of the synthetic polymer on a dry solids basis.

Abstract: Compositions and films are provided for the preparation of electrostatic printing masters. The composition binder permits use of aqueous silver halide photographic techniques to image the master for printing, and exhibits insulation properties needed for electrostatic printing under typical conditions of relative humidity.

Abstract: A photographic element comprising a support having thereon a gelatin-containing layer, and a matting agent comprising polymer particles covalently bonded to the gelatin in the layer. The polymer particles may be individually covered with gelatin that is covalently bonded thereto and the gelatin that is covalently bonded to the particles may be cross-linked with the gelatin in the layer. There is also provided a process of preparing a photographic element comprising a matting agent and a layer comprising gelatin. In this process, the gelatin layer is coated onto a support, at least partially dried, and polymer particles are applied to the layer. The polymer particles are then covalently bonded to the gelatin in the layer.

Abstract: Sharper edges are obtained in silver halide wash-off films for tanning development when from 5 to 60% of the unhardened gelatin binder in one or more layers is replaced with a synthetic amphoteric polymer consisting essentially of at least one of each of three constituents: (a) carboxylic acid, (b) alkyl primary amine, and (c) secondary and/or tertiary amine, the amphoteric polymer having an isoelectric point of from 4 to 8.

Abstract: A color photographic recording material contains at least one silver halide emulsion layer which is divided into a partial layers of different sensitivity, at least one relatively high-sensitivity partial layer containing a synthetic polymer and gelatin in a ratio by weight of from 30:70 to 80:20.

Abstract: A silver halide photographic material comprising a support and at least two silver halide emulsion layers on one or both sides of the support, wherein at least one of silver halide emulsion layers contains a polymer having a repeating unit represented by the general formula (I) and/or dextran: ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R.sup.2 and R.sup.3, which may be the same or different, and are each a hydrogen atom, or a group having 10 or less carbon atoms and selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted aralkyl group, and R.sup.2 and R.sup.3 may combine together with the nitrogen atom to which they are attached to form a nitrogen-containing heterocyclic ring; L is an (m+1)-valent connecting group; n is 0 or 1; and m is 1 or 2.

Abstract: A thermally developable, light-sensitive material is disclosed which has at least one thermally developable, light-sensitive layer formed on a support which contains (a) a light-sensitive silver halide, (b) an organic silver salt, (c) a reducing agent and (d) a binder. Said binder contains gelatin and/or a gelatin derivative and a poly(vinyl alcohol) having a viscosity average polymerization degree of not more than 700.

Abstract: A photographic recording material consisting of a layer support, at least one light-sensitive silver halide emulsion layer containing gelatine and optionally other gelatine-containing layers which are not light-sensitive contains in at least one of the layers a cross-linked polymer latex on the basis of a low molecular weight carboxylic acid amide. The latex may advantageously be used as a binding agent or for introducing residues of photographically active substances into a photographic layer.

Abstract: Photographic material containing on a support at least one silver halide emulsion layer which contains as binders both gelatin and a polymer latex, wherein the particle size is less than 0.05 .mu.m, and which is obtained by emulsion polymerizing a monomer or monomer mixture which consists of an alkyl acrylate or an alkyl methacrylate or a monomer mixture comprising both an alkyl acrylate and an alkyl methacrylate or a mixture comprising an alkyl acrylate and/or an alkyl methacrylate together with up to 5% by weight of an ethylenically unsaturated copolymerizable acid and/or up to 30% by weight of other ethylenically unsaturated comonomers in the presence of at least 12% by weight of the monomers present of an anionic surfactant at a temperature of from 15.degree. C. to 90.degree. C. by use of a redox initiator system which is present to the extent of from 0.1% to 3% by weight of the monomers present.The latexes are of use to partially replace gelatin in photographic materials.

Abstract: A photographic silver halide light-sensitive material is described. The material is comprised of a support with at least one gelatin-containing hydrophilic layer provided thereon. The gelatin-containing hydrophilic layer contains a styrene-butadiene copolymer latex. With this photographic silver halide light-sensitive material, the formation of fog and desensitization occur less if it is bent or sucked during the production, working, and development thereof. There is thus provided a light-sensitive material which is improved in its resistance against mechanical stresses without causing a loss of transparency during development, and further, without increasing its surface electric resistance.

Abstract: A water based photosensitive composition comprises a hydrolyzate of a mammal collagen and a photosensitizer serving to cross-link the hydrolyzate when exposed to an active light. The hydrolyzate has a number-average molecular weight, Mn, of 2,000 to 30,000 and an intrinsic viscosity, [.eta.], of 0.060 to 0.155 dl/g in a 0.15 mole citric acid buffer solution maintained at 40.degree.C. Also, the hydrolyzate is capable of maintaining the formability of the collagen fold. A photoresist pattern formed by using the composition exhibits a high resolution, a good dyeing property and a strong corrosion resistance.

Abstract: Artificial gelatins containing higher proportions of methionine than are found in natural gelatin are made by thermal polymerization of methionine with various proportions of other .alpha.-amino acids, including some proportion of aspartic acid, glutamic acid or lysine. Artificial gelatins containing as much as 40 mole percent methionine can be obtained. Proportions in the polymer can be adjusted by control of proportions in the reaction mixture. Photographic silver halide emulsions containing these artificial gelatins and photographic films employing the emulsions are also disclosed.

Abstract: A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, by mixing the photographic additives with a combination of at least one non-ionic alkylphenol/alkylene oxide or diphenolmethane/alkylene oxide adduct and at least one anionic esterification product of these adducts and, optionally, a water-immiscible solvent and then finely dispersing this mixture in an aqueous solution of the hydrophilic colloid, which solution contains further water-soluble or dispersed water-insoluble constituents optionally.Spontaneous emulsions of the photographic additives with good fine dispersion are obtained in this way without high expenditure of mechanical energy. The emulsions are suitable for the preparation of photographic layers, which are used in photographic materials with improved characteristics.

Abstract: A homo- or copolymer containing copolymerized monomeric units of the formula ##STR1## is a valuable peptizing agent for the precipitation of silver halide. Sensitivity, onset of development and silver covering power are advantageously influenced.

Abstract: A latex is formed of a copolymer of 90 to 98% by weight of ethyl acrylate and 2 to 10% by weight of an ionogenic comonomer. The latter comprises in its structure a polymerizable ethylenically unsaturated bond, a hydrophobic chain comprising at least 8 carbon atoms, and a strong hydrophilic group taken from a sulpho group, a sulphato group or a phosphono group in acid or salt form.Photographic layers are described wherein the above latex is used as plasticizer for gelatin.

Abstract: Protein containing photographic layers are hardened by coating with a hardening solution which contains at least one quick-acting hardener which activates carboxyl groups and at least one polysaccharide.

Abstract: An antistatic layer of a radiation-sensitive element, such as a photographic film or paper, is formed by coating and drying of an antistatic composition comprising an aqueous solution of an amorphous antistatic material, the aqueous solution having been produced by forming a melt comprised of at least 80% by weight of vanadium pentoxide and casting the melt into a solubilizing amount of water. In addition to vanadium pentoxide, the melt can contain a glass-forming compound, such as an alkaline metal phosphate or polyphosphate, as well as an oxide of an element that exists in at least two valence states, such as an oxide of molybdenum. The radiation-sensitive element preferably includes a protective overcoat layer covering the antistatic layer.

Abstract: An improved process is disclosed for uniformly dispersing hydrophobic materials through a hydrophilic colloid layer such as, for example, a photographically useful layer containing gelatin. The process over which the present invention is a valuable improvement comprises the steps:(a) forming an aqueous dispersion by intermixing the hydrophobic material and an aqueous polymeric latex, optionally including gelatin in the dispersion;(b) forming a wet layer by coating onto a suitable support the aqueous dispersion from step (a); and(c) thereafter removing a substantial proportion of the water from the wet layer through which the hydrophobic material is dispersed.The present process relates particularly to improvements in step (a), wherein the "aqueous dispersion" is formed by blending a loadable polymeric latex into a solution of the hydrophobic material dissolved in a water-miscible solvent using techniques which avoid coagulation of the hydrophobic material or the particles of the latex.

Abstract: Disclosed herein are compositions useful for the preparation of flexible coatings, particularly to photographic materials, which have improved stability to organic solvents and dissolved salts. The compositions comprise an aqueous dispersion of a hydrophilic colloid and a copolymer having a glass transition temperature less than or equal to 60.degree. C. comprising: from about 50 to about 70 percent by weight of an ester of an ethylenically unsaturated carboxylic acid; from about 2 to about 18 percent by weight of an amide of an ethylenically unsaturated carboxylic acid; from about 10 to about 30 percent by weight of a vinyl benzene; and from about 2 to about 18 percent by weight of a sulfonate monomer having the formula ##STR1## wherein R is hydrogen or alkyl; R.sup.1 is selected from the group consisting of alkylene and ##STR2## R.sup.2 is amino substituted with alkyl or hydrogen, or --CH.sub.2).sub.n O-- wherein n is an integer from 0 to 5; m is either 0 or 1; and X is hydrogen or a monovalent cation.