Abstract: This subject invention relates to novel dihydrazide compounds useful as dot-promoting agents in photographic image systems, methods for making them, and to photographic materials which comprise these compounds.

Abstract: A photographic light-sensitive silver halide material is provided for making negative lithographic images or direct-positive images, said material comprising a support, at least one internal latent image-type silver halide emulsion layer (in the case of direct-positive materials) or surface latent image-type silver halide emulsion layer (in the case of lithographic materials) and development-nucleating amounts of a compound or a precursor thereof, said compound having at least one quaternary heterocyclic ring system comprising at least three rings including a tetrahydropyridinium ring wherein carbon-nitrogen and carbon-carbon double bonds are also part of an aromatic ring being one of said three rings and wherein said double bonds and nitrogen atom in said tetrahydropyridinium ring are incorporated into annelated conjugated ring systems. Developing said photographic material after exposure in an alkaline surface developer rapidly converts said precursor into a ring system as defined hereinbefore.

Abstract: This subject invention relates to novel dihydrazide compounds useful as dot-promoting agents in photographic image systems, methods for making them, and to photographic materials which comprise these compounds.

Abstract: A silver halide color photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the emulsion layer contains at least one silver halide emulsion layer, wherein said emulsion layer contains at least one dye-forming coupler and at least one reducing agent for coloring represented by the following formula (I), and further the film pH of said silver halide color photographic material is 6.5 or less:R.sup.11 --NH--NH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl group, or a heterocyclic group; R.sup.12 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; X represents --SO.sub.2 --, --CO--, --COCO--, --CO--O--, --CO--N(R.sup.13)--, --COCO--O--, --COCO--N(R.sup.13)-- or --SO.sub.2 --N(R.sup.13)--; where R.sup.13 represents a hydrogen atom or a group described for R.sup.12.

Abstract: A silver halide photographic material is disclosed, which comprises a support having thereon at least one light-sensitive silver halide emulsion layer comprising silver halide grains sensitized with a selenium or tellurium sensitizer and having a silver chloride content of 50 mol % or more, wherein the silver halide emulsion layer or other hydrophilic colloid layer contains polymer latex having an active methylene group. The silver halide photographic material provides high storage stability and less pressure marks.

Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive layer, the photographic material comprising a reduction-sensitized silver halide emulsion containing a compound in which a group adsorptive to silver halide and a specific hydrazine structure are covalently bonded. The silver halide photographic material exhibits high sensitivity and improved fog characteristics and improved preservation stability.

Abstract: The present invention relates to a light-sensitive silver halide photographic material comprising a support and silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers comprises an alkylaminomercaptotetrazole antifoggant. According to a preferred embodiment of the present invention said silver halide emulsion layer comprises tabular silver halide grains having an average aspect ratio higher than 3:1 and a thickness lower than 0.4 .mu.m.

Abstract: A silver halide photographic material comprising at least one of hydrazide compounds represented by formula (1), (2) or (3):X.sub.1 --(R.sub.3).sub.m3 --(L.sub.2 --R.sub.2).sub.m2 --L.sub.1 --A.sub.1 --NHNH--CO--R.sub.1 (1)X.sub.21 --(R.sub.23).sub.m23 --(L.sub.22 --R.sub.22).sub.m22 --L.sub.21 --Ar--NHNH--CO--R.sub.21 (2) ##STR1## The substituents in formulae (1), (2) and (3) are defined in the specification.

Abstract: A silver halide photographic material containing at least one silver halide emulsion layer on a support is provided. The silver halide emulsion layer comprises chemically sensitized silver halide grains having a silver chloride content of 50 mol % or more, said silver halide emulsion has been spectrally sensitized with at least one dye selected from the dyes represented by one of the general formulas (1), (2) and (3) shown in the specification. The emulsion layer or at least one other hydrophilic colloidal layer contains at least one member selected from the hydrazine derivatives represented by one of the formulas (4), (5) and (6) shown in the specification and at least one compound selected from the compounds represented by one of the formulas (7), (8), (9), (10), (11) and (12) shown in the specification.A process for the formation of an image is also provided, which comprises the development of a silver halide photographic material as defined above with a developer having a pH value of 9.6 to less than 11.

Abstract: Negative images of super-high contrast can be formed by developing an exposed silver halide photographic photosensitive material in the presence of at least one compound selected from the compound of formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R.sup.1 and R.sup.2, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, or R.sup.1 and R.sup.3, together with nitrogen atom to which they are attached, may form a ring; L.sup.1 and L.sup.2 independently represent an alkylene group, an arylene group or a repeated alkyleneoxy group having at least two repeated alkyleneoxy units, which groups may be optionally substituted; A represents an atom selected from hydrogen, carbon, nitrogen, oxygen and sulfur or a divalent linkage group constituted from these atoms; and m and n represent 0 or 1, and the compound of formula (2) ##STR2## wherein R.sup.7, R.sup.8 and R.sup.

Abstract: An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound includes an electron-withdrawing and aqueous-solubilizing group on an aromatic ring linked to the carbonyl of the hydrazide group and a ballasting group on an aromatic ring linked to a nitrogen atom of the hydrazide group. Preferably, the hydrazide compound is incorporated in a photographic element which comprises a four-equivalent 5-pyrazolone magenta-dye-forming coupler.

Abstract: An image forming method is disclosed, comprising exposing a silver halide photographic material through a transparent, high definition-screening original and developing the photographic material with a developer to form a halftone dot image, wherein:the photographic material forms a halftone dot image having a dot area of 57% or less when exposed, through the transparent original comprising a halftone dot image having a dot area of 50%, in two times an amount that gives a halftone dot having a dot area of 50%; and the photographic material has a maximum density of 3.0 or more and a contrast of 8.0 or more;and wherein the photographic material is exposed to light having an emission peak at a wavelength of 360 to 450 nm and developed with a developer having a pH of 10.5 or less.

Abstract: A silver halide color photosensitive material is disclosed, which has on a support at least one photosensitive silver halide emulsion layer, wherein at least one nondiffusible compound represented by the following formula (I) is contained to inhibit generation of color stain and color fog and to ensure excellent keeping quality: ##STR1## wherein R.sup.1 represents an aryl group or a heterocyclic group, R.sup.2 represents an alkyl group, a cycloalkyl group, an alkoxy group or an aryloxy group, R.sup.3 represents an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group and X represents an oxygen atom or a sulfur atom; provided that R.sup.3 does not represent a phenyl group when R.sup.2 represents a phenoxy group. ##STR2## wherein R'.sup.1 represents an aryl group or a heterocyclic group; A'.sup.1 and A'.sup.2 each represents a hydrogen atom or a hydrolyzable group; X represents an oxygen atom or a sulfur atom; and Y.sup.1 represents atoms completing a phosphorus-containing heterocyclic ring.

Abstract: A color negative film which contains support, at least one light-sensitive silver halide emulsion layer containing a color coupler and at least one light-insensitive layer adjacent thereto which contains a compound which reacts with the developer oxidation product during development with the splitting off of a radical which increases the sensitivity and which corresponds to formulas I or IIA-B-(T.sub.1).sub.m -(COUP-D)-(T.sub.2).sub.n (I)A-B-(T.sub.1).sub.m D (II).

Abstract: A method for processing a silver halide photographic light-sensitive material by an automatic processor is disclosed. The processing method comprises the steps of (1) developing a silver halide photographic light-sensitive material with a developer being in a developing tank of said automatic processor while replenishing a developer replenisher in a rate of from 50 ml to 330 ml per square meter of the light-sensitive material processed and (2) fixing said developed silver halide photographic light-sensitive material with a fixer being in a fixing tank of said automatic processor while replenishing a fixer replenisher in a rate of from 50 ml to 330 ml per square meter of the light-sensitive material. The light-sensitive material comprises a support and at least one silver halide emulsion layer provided on a surface of a support which is a stretched film composed of a styrene copolymer having a syndiotactic structure or a composition containing said styrene copolymer.

Abstract: There is disclosed a silver halide photographic material in which a residual color can be compatible with a sensitivity in a development processing. The photographic material comprises a support and provided thereon at least one silver halide emulsion layer containing at least one of the methine compounds represented by the following Formula (I) and at least one of the compounds represent-ed by the following Formula (II): ##STR1## wherein R.sup.1 represents --(CH.sub.2).sub.r --CONHSO.sub.2 --R.sup.3, --(CH.sub.2).sub.s --SO.sub.2 NHCO--R.sup.4, --(CH.sub.2).sub.t --CONHCO--R.sup.5, or --(CR.sub.2).sub.u --SO.sub.2 NHSO.sub.2 --R.sup.6, in which R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represent an alkyl group, an alkoxy group, or an amino group and r, s, t and u each repre-sent an integer of 1 to 5; R.sup.2 is synonymous with R.sup.1 or represents an alkyl group which is different from R.sup.1 ; Z.sup.1 and Z.sup.

Abstract: A silver halide photographic material is disclosed, which comprises a support and at least one light-sensitive silver halide emulsion layer formed thereon, said emulsion layer containing at least one nucleating agent represented by formula (I) ##STR1## wherein A.sub.1 and A.sub.2 both represent a hydrogen atom, or one of A.sub.1 and A.sub.2 represents a hydrogen atom and the other represents a sulfinic acid residue or an acyl group; R.sub.1 represents an aliphatic group, an aromatic group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group; G represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an iminomethylene group; and Y represents a phenylene group or a naphthylene group; the sum of the total carbon atoms of said R.sub.1, R.sub.2, and Y being at least 13. The nucleating agent provides very high contrast images when used in a negative working silver halide emulsion.

Abstract: A high-contrast photographic material, adapted for use in the field of graphic arts, includes a hydrazide nucleating agent and comprises a silver halide emulsion layer containing silver halide grains which are spectrally sensitized with a non-desorbing sensitizing dye and silver halide grains which are not spectrally sensitized. Preferably, the photographic material also contains a booster compound which enables it to be processed in a developer having a pH of below 11.

Abstract: A method for producing a silver halide photographic light-sensitive material is disclosed. The silver halide photographic light-sensitive material comprises a support having thereon photographic layers including a silver halide emulsion layer, a first hydrophilic colloid layer and an outermost second hydrophilic colloid layer in this order from the support. The light-sensitive material is produced by a method comprising steps offorming the photographic layer by coatinga silver halide emulsion coating solution comprising silver halide grains, gelatin and water to form said silver halide emulsion layer;a first hydrophilic colloid solution comprising gelatin and water to form said first hydrophilic colloid layer; anda second hydrophilic colloid solution comprising gelatin, particles of matting agent having a size of not less than 4 .mu.m in an amount of 4 mg/m.sup.2 to 50 mg/m.sup.

Abstract: A silver halide photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the emulsion layer or other hydrophilic colloid layer contains at least one hydrazine compound and at least one compound represented by the following formula (I): ##STR1## An image forming method is also described, which comprises development processing the above-described image exposed silver halide photographic material with a developing solution comprising (1) from 0.2 to 0.75 mol/liter of dihydroxybenzene based developing agent, (2) from 0.001 to 0.06 mol/liter of 1-phenyl-3-pyrazolidone or p-aminophenol auxiliary developing agent, (3) from 0.3 to 1.2 mol/liter of free sulfite ion, and (4) a compound represented by the following formula (E); and the concentration ratio of the compound represented by formula (E) to the dihydroxybenzene developing agent is from 0.03 to 0.12, and the developing solution has a pH value of from 9.0 to 12.0.

Abstract: A photographic element comprising a light sensitive silver halide emulsion sensitized with a dye of formula (I) and a nucleating agent or amine booster associated with the silver halide emulsion: ##STR1## wherein: R.sub.3 is an alkyl group, alkenyl group, or aryl groupR.sub.4 and R.sub.5 are each hydrogen, an alkyl group, alkenyl or aryl group;R.sub.6, R.sub.7 and R.sub.8 are, independently, an alkyl group, alkenyl group, aryl group, or H;the dye has at least three acid or acid salt substituents; andeach L independently represents a methine group;p is 0 or 1;Z.sub.1 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring group;(X).sub.n represents counterions as needed to balance the charge on the molecule.The present invention also provides a process for forming a high contrast photographic image on a photographic element having a light sensitive silver halide emulsion sensitized with a dye of formula (I).

Abstract: Provided is a silver halide photographic photosensitive material excellent in rapid processability and having high processing stability which contains at least one compound represented by the following formula (I) and (II): ##STR1## wherein L.sup.1 and L.sup.2 each represent a divalent linkage group, G.sup.1 and G.sup.2 each represent a carbonyl group, a sulfonyl group, a sulfinyl group, an oxalyl group or a phosphoryl group, R.sup.1 and R.sup.2 each represent a hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group or an aryl group, R.sup.3 and R.sup.5 each represent an alkyl group, an aralkyl group or an alkenyl group, R.sup.4 and R.sup.6 each represent a hydrogen atom, an alkyl group, an alkoxy group, an aryloxy group, an aryl group or an amino group, Z represents a group of atoms necessary to form a nitrogen-containing 5- to 18-membered ring, X represents a counter ion, and m and n each represent 0 or 1, and the isothioureido group may be a salt of a protonic acid.

Abstract: A new type of hydrazide compounds is disclosed corresponding to general formula (A): ##STR1## the symbols of which are explained in the description. Examples of synthesis are given. Incorporation of these diacyl hydrazides into the silver halide emulsion layer(s) of a photographic material causes a significant increase in sensitivity.

Abstract: A silver halide photographic photosensitive material comprises an emulsion layer which includes silver halide grains having a silver chloride content of at least 50 mol % and containing a rhodium compound. The material also comprises, (i) a hydrazine derivative according to formula (1), (2) or (3) which formulas are shown and defined in the specification, and (ii) at least one compound selected from colloidal silica and polyacrylamide derivatives. The material further comprises a protective layer, the outermost layer of which has a dynamic friction coefficient is not more than 0.35. The material may be processed in a developer having a pH of at least 9.6 but less than 11.0.

Abstract: An improved photographic element comprises a support bearing at least-one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound comprises at least one polyhydroxy aromatic nucleus or a precursor thereof and at least one moiety containing an ##STR1## group which is bonded to a ring carbon atom of the polyhydroxy aromatic nucleus or precursor thereof through a linking group. The linking group can be an oxy, thio, sulfinyl, sulfonyl or alkylene group or it can be a carbonyl group when the polyhydroxy aromatic nucleus comprises at least three hydroxyl groups.

Abstract: Direct-positive photographic elements are comprised of a support and a silver halide emulsion layer containing core-shell silver halide grains comprising a chemically sensitized core and a chemically sensitized shell, wherein at least one of the core and the shell comprises a band of dopant and wherein the dopant is hexacyano ruthenium (II). Preferably, the shell of the core-shell grains is chemically sensitized with both a gold-containing chemical sensitizing agent and a sulfur-containing chemical sensitizing agent and the weight ratio of the gold-containing chemical sensitizing agent to the sulfur-containing chemical sensitizing agent is at least about two to one.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the layer contains at least one compound represented by the following formula (I) and at least one compound represented by the following formula (X): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; R.sub.4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; and R.sub.1 and R.sub.2, and R.sub.3 and R.sub.4 each may be combined with each other to form a ring; ##STR2## wherein Z.sub.11 represents a sulfur atom, a selenium atom or a substituted nitrogen atom represented by ##STR3## in which R.sub.

Abstract: Disclosed is a method for developing a silver halide photographic light-sensitive material with a developer having a pH within the range of 9.5 to 10.7 through an automatic processor, wherein said silver halide photographic light-sensitive material comprises a support and thereon, at least one silver halide emulsion layer comprising silver halide grains containing at least 60 mol % of silver chloride, comprising the steps of:replenishing a first developer replenishing-solution having lower activity than a starter for a developer; andreplenishing a second developer replenishing-solution having the substantially same activity as said starter for a developer.

Abstract: In order to provide a direct-positive material having low contrast and extended latitude that can be manufactured in a consistent and reproducable way a multilayer direct-positive photographic material is disclosed as well as the process to provide it, characterized by the steps of coating on one side of a support at least two layers of direct positive silver halide emulsions of the externally fogged type, at least one layer of which comprises a mixture of direct positive silver halide emulsions of the externally fogged type and at least one layer of which comprises one or more filter dyes; overcoating said emulsion layers with at least one protective layer; coating on the other side of the support at least one backing layer.

Abstract: The object of the present invention is to provide a silver halide light-sensitive material capable of forming a ultra high gradation image by processing in a stable developing solution.The present invention is a silver halide photographic material containing at least one of the compounds represented by Formula (I) or (II): ##STR1## wherein X represents an aliphatic group, an aromatic group, or a heterocyclic group and may be substituted; R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group; R.sub.2 and R.sub.3 each represent an aliphatic group, an aromatic group, or a heterocyclic group and may be the same or different; and further R.sub.1, R.sub.2 and R.sub.3 may be substituted and combined with each other to form a ring; ##STR2## wherein X represents an aliphatic group, an aromatic group, or a heterocyclic group and may be substituted; Y represents a --O-- group, a --NR.sub.3 -- group, a --S-- group, a --SO-- group, a --SO.sub.

Abstract: A high-contrast photographic element, adapted for use in the field of graphic arts, includes a hydrazide nucleator and an amine booster and comprises a silver halide emulsion layer which is capable of forming a latent image under conditions of use and a second silver halide emulsion layer which is not capable of forming a latent image under conditions of use.

Abstract: A silver halide photographic material is described, which comprises a hydrazine derivative represented by the following formula (I) and a surface active compound represented by the following formula (II): ##STR1## and wherein the substituents are defined in the specification. An image formation method using the silver halide photographic material is also described.

Abstract: Disclosed is a direct positive silver halide color photographic light-sensitive material comprising a support and provided thereon, a blue-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to blue-light, a green-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to green-light, a red-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to red-light and a hydrophilic colloidal layer, wherein said blue-sensitive emulsion layer is provided so as to be located farther than both said green-sensitive and said red-sensitive emulsion layers from the support; and at least one of said blue-sensitive emulsion layer, said-green sensitive emulsion layer and said red-sensitive emulsion layer or said hydrophilic colloidal layer contains an internal latent image forming si

Abstract: A film is disclosed for duplicating a silver image in a radiographic film. A single monodispersed fogged direct-positive emulsion layer is employed. To extend exposure latitude the emulsion layer contains micro-crystalline particles of a dye that competes with the fogged direct positive grains of the emulsion layer for absorption of exposing radiation and can be decolorized during photographic processing.

Abstract: Disclosed is a silver halide photographic photosensitive material comprising a support and, provided thereon, at least one hydrophilic colloid layer including a photosensitive layer wherein the photosensitive layer comprises monodispersed silver halide grains having an average grain size of 0.2 micron or less and comprising at least 90 mol % of silver chloride, the photosensitive layer or a hydrophilic colloid layer provided on the same side of the support as the side on which the photosensitive layer is provided contains a hydrazine derivative, a hydrophilic colloid layer provided above the photosensitive layer contains a water-dispersible fine particle polymer, the photosensitive layer contains substantially no water-dispersible fine particle polymer, and amount of the water-dispersible fine particle polymer contained in the hydrophilic colloid layer is 1 g/m.sup.2 or less and is 5% by weight or more based on the weight of gelatin contained in the hydrophilic colloid layer.

Abstract: The present invention provides a method for making direct-positive photographic images comprising the steps of image-wise exposing a photographic light-sensitive silver halide material comprising a support and a layer of an internal latent image-type silver halide emulsion the pAg of which has been adjusted to a value of at least 8.5 before coating, and developing said exposed photographic silver halide material in a surface developer in the presence of at least one development nucleator which is not able to react with but which is able to adsorb weakly on the surface of the silver halide emulsion crystals prior to development, but which contains a group protected against reaction with silver halide and which is transformed during development in a nucleating derivative with an enhanced reactivity for the silver halide crystals. Photographic materials comprising these novel development nucleators are also described.

Abstract: Disclosed is a silver halide photographic material and forming an image using the same, containing a hydrazine derivative in the emulsion layer(s) or in other hydrophilic colloid layer(s). At least one silver halide emulsion comprises silver halide grains containing (a) from 1.times.10.sup.-8 to 1.times.10.sup.-6 mol, per mol of silver, of an iridium compound, and (b) from 1.times.10.sup.-8 to 1.times.10.sup.-6 mol, per mol of silver, of a rhodium compound or from 1.times.10.sup.-9 to 1.times.10.sup.-5 mol, per mol of silver, of a rhenium compound, ruthenium compound or osmium compound, and having a silver chloride content of 50 mol % or more, the emulsion having been color-sensitized with a sensitizing dye of the following general formulae (1), (2) or (3): ##STR1## The material may be processed with a stable developer to give a hard image having few "black peppers".

Abstract: A silver halide photographic light-sensitive material is disclosed. the light-sensitive material comprises a support bearing on the same side thereof a silver halide emulsion layer and optionally a hydrophilic colloid layer, and at least one of the silver halide emulsion layer or the hydrophilic colloid layer contains a hydrazine derivative in a form of dispersion of solid particles and at least one of the silver halide emulsion layer or the hydrophilic colloid layer contains a nucleation accelerator represented by the following formula 1; ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group, an substituted or unsubstituted alkenyl group or a substituted or unsubstituted aryl group, provided that R.sub.1, R.sub.2 and R.sub.3 are not a hydrogen atom at the same time and two of R.sub.1, R.sub.2 and R.sub.3 may link to form a ring.

Abstract: A silver halide photographic light-sensitive material comprises a support and provided thereon, a photographic component layer comprising a silver halide emulsion layer and a hydrophilic colloid layer other than the emulsion layer, wherein the photographic component layer contains a hydrazine derivative, a nucleation accelerating agent and polymer latex containing as a protective colloid a hydrophilic polymer having an average number molecular weight of 1,000 to 1,000,000 and having a solubility of not less than 0.1 g in 100 g of water at 20.degree. C., provided that the hydrophilic polymer is not gelatin.

Abstract: An ultra-hard silver halide photographic material having high processing stability, which contains a hydrazine derivative represented by the following general formula (1) or (2): ##STR1## wherein X.sup.1 and X.sup.2 are each a group containing 1 to 6 carbon atoms, Y.sup.1 is a hydrogen atom or a group, R.sup.1 is a group, Y.sup.1 and R.sup.1 jointly provide 4 to 30 carbon atoms, Y.sup.2 is an electron withdrawing group, R.sup.2 is a hydrogen atom or a monovalent group, and n is an integer of from 1 to 5.

Abstract: Photographic film nucleating agents comprising aryl sulfonamidophenyl hydrazides containing alkene, alkadienyl, alkapolyenyl or cycloalkenyl substituted pyridinium functionality; these nucleators produce better dot quality and superior contrast characteristics in image-wise exposed film elements and wider compatibility with standard rapid access developers and obviate the need to include boosters in the film or in the developer.

Abstract: The present invention relates to a method for making direct-positive photographic images by developing light-sensitive materials in the presence of development nucleators which do not cause loss of sensitivity during exposure or unevenness of development. More specifically the invention relates to the formation of direct-positive images having a high maximum density and high exposure latitude and to photographic materials for use in said formation, which is accomplished by a method for making direct-positive images comprising:image-wise exposing a photographic light-sensitive silver halide material comprising a support and a layer of an internal latent image-type silver halide emulsion, the pAg of which has been adjusted to a pAg-value between 9.0 and 10.5 inclusive before coating, anddeveloping said exposed photographic silver halide material in a surface developer in the presence of a development nucleator with a group promoting adsorption to silver halide.

Abstract: Disclosed is a silver halide photographic material comprising a support having thereon a silver halide emulsion layer containing at least one nucleating agent represented by general formula (N-1) shown below. The silver halide photographic material contains at least one compound represented by general formula (Q-2) shown below in the above described silver halide emulsion layer and/or in a hydrophilic colloid layer adjacent thereto which does not contain a silver halide emulsion: ##STR1## The variable terms in the above formulas are defined in the specification. The silver halide photographic material is suitable for plate making and provides a high contrast image even when using a highly stable developing solution.

Abstract: The inclusion of isothiouronium functionality onto hydrazide derivatives results in the formation of nucleating agents for lithographic films that produce high contrast and speed with excellent dot quality as required for halftone applications. The level of performance of the nucleators of the invention is sufficiently high that the need to incorporate amine boosters in the lithographic film elements or developers is not required. The novel nucleators have the formula ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.10 alkyl, substituted or unsubstituted carbamoyl, or alkoxy or aryloxy carbonyl; Y is substituted or unsubstituted divalent aryl, and Q is an isothiouronium salt moiety.

Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer; wherein, when an exposure is conducted within 1/10 to 10 times of an exposure amount giving minimum density of +0.2 on the first layer selected from said three layers after developing in the main spectra sensitivity region of the first layer, the second layer selected from said three layers is given lower density with said 1/10 to 10 times of exposure than a density without said 1/10 to 10 times of exposure; and reflection densities in 450 nm, 550 nm and 700 nm is not less than 0.8 respectively, before the developing.The silver halide color photographic light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed printer.

Abstract: Disclosed is a silver halide photographic material comprising:at least one silver halide emulsion layer;a hydrazine derivative; andat least one hydroquinone derivative represented by general formula (LI) or (LII): ##STR1## wherein G represents hydrogen atom or an alkyl group having 1 to 17 carbon atoms;n represents an integer of 1 to 5; andR.sub.1 to R.sub.10 each represent a hydrogen atom, an alkyl group, an aryl group, a hydroxyl group, an alkoxy group, an aryloxy group, a halogen atom, a primary, secondary or tertiary amino group, a carbonamido group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, a carboxyl group or a sulfo group.

Abstract: There is disclosed a silver halide photographic light-sensitive material for plate making giving a hard gradation and having less variation in photographic performance due to fatigue of the developing solution. The silver halide photographic light-sensitive material has at least one silver halide emulsion layer and contains at least one of hydrazine compound represented by Formula (I) in the above emulsion layer or in another hydrophilic colloid layer. The light-sensitive material also contains at least one hydrazine compound represented by Formula (II) in the above emulsion layer or another hydrophilic colloid layers. ##STR1## The variables in these formulas are defined in the specification.

Abstract: A silver halide photographic light sensitive material contains a novel nucleating compound represented by the following formula (I), which is capable of functioning as a contrast increasing agent in a negative system or as a foggant in a direct positive system ##STR1##

Abstract: A photographic material comprises a support and at least one photosensitive layer which comprises a non-chemically sensitized silver halide emulsion containing at least 80 mol % silver chloride based upon the total amount of silver halide in the emulsion. The photosensitive layer or another hydrophilic colloid layer comprises a hydrazine derivative represented by the following General Formula (I): ##STR1## In this formula A.sub.1 and A.sub.2 both represent hydrogen atoms, or one represents a hydrogen atom and the other represents a sulfinic acid group or an acyl group; R.sup.1 represents an aliphatic group, an aromatic group or a heterocyclic group, and R.sup.1 may or may not be substituted; G represents --CO--, --SO.sub.2 --, --SO--, --COCO--, thiocarbonyl, iminomethylene or --P(O)(R.sup.4) group; R.sup.2 represents a substituted or unsubstituted alkyl group, aryl group, heterocyclic group, amino group, alkoxy group or aryloxy group; at least one of R.sup.1 and R.sup.

Abstract: A method for processing a silver halide photographic material is disclosed and the photographic material has a support thereon, comprising at least one silver halide emulsion layer and containing a hydrazine compound represented by following formula (I) in the above emulsion layer or the other hydrophilic colloid layers, which comprises processing the silver halide photographic material after exposure in a developing solution containing:(1) 0.2 to 0.75 mole/liter of a dihydroxybenzene developing agent,(2) 0.001 to 0.06 mole/liter of a 1-phenyl-3-pyrazolidone or p-aminophenol auxiliary developing agent,(3) 0.3 to 1.2 mole/liter of a free sulfite ion, and(4) a compound represented by following formula (II), and having a concentration ratio of a compound represented by formula (II) to a dihydroxy developing agent of 0.03 to 0.12 and pH of 9.0 to 11.