Abstract: The optical functional element contains aggregates of developed silver grains obtained by developing silver halide grains arranged so as to constitute a periodical structure. The element includes a substrate and a medium layer. The aggregates of the developed silver grains are arranged in the medium layer so as to constitute said periodical structure. The element is produced by first selectively exposing a photo-curing resin layer formed on said substrate in which the silver halide grains are dispersed so as to selectively photo-cure the photo-curing resin layer, then overall exposing the photo-curing resin layer to expose the silver halide grains in the photo-curing resin layer, and thereafter developing the photo-curing resin layer.

Abstract: The optical functional element contains aggregates of developed silver grains obtained by developing silver halide grains arranged so as to constitute a periodical structure. The element includes a substrate and a medium layer The aggregates of the developed silver grains are arranged in the medium layer so as to constitute said periodical structure. The element is produced by first selectively exposing a photo-curing resin layer formed on said substrate in which the silver halide grains are dispersed so as to selectively photo-cure the photo-curing resin layer, then overall exposing the photo-curing resin layer to expose the silver halide grains in the photo-curing resin layer, and thereafter developing the photo-curing resin layer.

Abstract: An image information recording method is disclosed.

Abstract: There is disclosed a silver halide color photographic light-sensitive material that contains, in photographic constitutional layers on a support, a hydrazine-series reducing agent for color formation, and a phenol-series magenta coupler having an acylamino group at the 5-position, and/or a naphthol-series cyan coupler having an amido group at the 5-position. The light-sensitive material makes low-replenishment and low-discharge processing possible, and exhibits good color reproducibility and good color-forming property.

Abstract: A new fogging photographic processing solution for a reversal process comprises a compound (I) and a bi-nucleophilic agent. Compound (I) corresponds to the following formula: ##STR1## wherein A is a group capable of being adsorbed to the silver halide surface, L is a linking group and r is 0 or 1, R.sub.1 and R.sub.2 are independently selected from an alkyl group, substituted or unsubstituted, and an aryl group substituted or unsubstituted. A process of producing a positive image by imagewise exposure of a reversal silver halide material comprises contacting the material with the above fogging solution or by imagewise exposure of such a material containing a compound (I) and contacting the material with a solution comprising a bi-nucleophilic agent.

Abstract: A silver halide color photographic material is disclosed, wherein it comprises a support having thereon one or more constituent layers including at least one silver halide emulsion layer, wherein at least one hydrophilic colloid layer of said constituent layers contains a coupler represented by the following formula (M) or formula (I) and at least one hydrophilic colloid layer of said constituent layers contains a compound represented by the following formula (H): ##STR1##

Abstract: A silver halide color reversal photographic light-sensitive material processing method which forms a color reversal image by performing first black-and-white development, fogging process, color reversal development, and desilvering process by using a color reversal developer with a composition containing a non-dye-forming competing coupler, a silver halide fogging agent, and a carboxybenzenesulfonic acid compound and not containing hydroxylamine or its derivative.

Abstract: Photographic elements are described havinga silver halide emulsion layer,a pyrazoloazole coupler in reactive association with said silver halide emulsion, anda competitor for oxidized developer in reactive association with said coupler having the formula: ##STR1## R.sup.1 represents an electron donating group, R.sup.2 represents hydrogen, alkyl, alkoxy, aryl, aryloxy, aralkyl or amino of the formula --NHR.sup.3, where R.sup.3 is phenyl or benzyl, with the proviso that at least one of the substituents R.sup.1 and R.sup.2 (a) represents a ballast group of sufficient size as to render the hydrazide compound non-diffusible in the photographic element prior to developement in alkaline processing solution and (b) comprises a polar group, andn is 0, 1 or 2.

Abstract: A method for producing color images comprising developing a negative silver halide color photographic materials and an internal latent-image type direct positive silver halide color photogaphic material, with the same developer having a pH of 9.0 to 11.5, said direct positive photographic material containing at least one compound represented by formula (N-I) as nucleating agent and at least one compound represented by (I) or (II) as magenta coupler, thereby ensuring high color reproducibility to both photographic materials: ##STR1## wherein the symbols and substituents of said formulae are as defined in the specification.

Abstract: A method for forming a direct positive image having a high Dmax and a low Dmin, which comprises image-wise exposing a photographic light-sensitive material having on a support at least one photographic emulsion layer containing unprefogged internal latent image-type silver halide grains and developing the photographic light-sensitive material after or while fogging to form direct positive image, wherein the aforesaid development is performed in the existence of at least one compound selected from the group consisting of compounds represented by formula (I), (II), (III), (IV), (V) or (VI), acid salts of compounds represented by formula (I) to (IV) provided substituents thereof contain an amino group, and acid salts of compound represented by formula (V) or (VI); ##STR1## wherein symbols are defined as in claim 1.

Abstract: A method for forming a direct positive image by the steps of:(a) imagewise exposing a photosensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing non-prefogged silver halide grains capable of forming an internal latent image; at least one of the light-sensitive emulsion layer or the other hydrophilic colloidal layer of the photosensitive material containing the following compound (a): ##STR1## (b) developing the exposed material in the presence of a developing agent and at least one nucleating agent; and(c) at least one of fixing and bleaching said developed photosensitive material to form a positive image.When used for making computer output images, the method according to the present invention provides rapid and stable formation of direct positive images with a high Dmax and a low Dmin, and prevents re-reversal negative formation during high illuminance exposure.

Abstract: A direct positive photographic material comprising a support having provided thereon one or more hydrophilic colloid containing layers, wherein at least one of said hydrophilic colloid containing layers is an internal latent image type silver halide emulsion which has not been previously fogged and at least one of said emulsion layer or other hydrophilic colloid containing layer contains a colloidal metal or a colloidal water-insoluble metallic sulfide, selenide or telluride, and a method for forming a direct positive from the direct positive photographic material in which a light-sensitive material contains at least two layers containing colloidal silver.

Abstract: A photographic reversal process for the production of positive photographic images by imagewise exposure of the photosensitive material containing at least one silver halide emulsion layer, black-and-white first development of the material, chemical fogging, color development and bleaching, fixing, washing or stabilizing and drying, in which the material is transferred from the first development to the color development without any intermediate steps, such as intermediate washing or diffuse second exposure, the first development bath exclusively contains one or more N,N-dialkyl-p-phenylenediamine derivatives as developer and a tin(II) complex compound and is adjusted to a pH value of <8 and the color development bath likewise exclusively contains one or more N,N-dialkyl-p-phenylenediamine derivatives as developer and is adjusted to a pH value >10, requires considerably less time than the conventional process but produces equivalent results.

Abstract: A method for forming a direct positive image composed of the step of developing with a surface developer an imagewise exposed photosensitive material compose of support having thereon at least one photosensitive emulsion layer containing unprefogged silver halide grains capable of forming an internal latent image; the at least the photosensitive emulsion layer composed of hexagonal tabular silver halide grains in an amount of at least 30 wt %, based on the total silver amount of silver halide grains therein; the hexagonal tabular grains having two parallel hexagonal faces, the ratio of the longest side to the shortest side of the hexagon being at most 2; the aspect ratio of the hexagonal tabular grains being from 2 to 8; and the hexagonal tabular grains having a monodisperse size distribution. The method provides increases in processing speed, maximum density, and contrast in the toe portion, and an improvement in graininess, even when exhausted processing solutions are used.

Abstract: A silver halide color photographic material is described which is to be processed by a scheme including at least the step of development with a color developer having a pH of at least 11 wherein said material contains a specific pyrazoloazole based magenta coupler and a compound that react with the oxidized product of a color developing agent and which substantially lacks the ability to impart an image density. The color photographic material is improved in granularity and color reproduction and yet permits efficient desilvering.

Abstract: A direct positive image forming method comprising development processing an imagewise exposed direct positive photographic light-sensitive material which comprises a support having thereon at least one layer containing internal latent image type silver halide grains not having been previously fogged after fogging treatment or while fogging treatment, wherein the fogging treatment is conducted in the presence of a compound represented by the following general 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 sulfonyl group or an acyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; L.sub.1 represents a divalent linkage group; X.sub.1 represents --O-- or ##STR3## wherein R.sub.4 represents a hydrogen atom, an alkyl group or an aryl group); Y.sub.1 represents ##STR4## R.sub.1 and R.sub.

Abstract: A silver halide photographic light-sensitive material comprising a reflective support having a transmission density of not more than 0.8, having thereon, a photographic component layer comprising a silver halide emulsion layer and a layer including at least one anti-halation layer formed closer to said support than said silver halide emulsion layer is disclosed. In the photographic material, degradation of image sharpness due to use of a reflective support having low transmission density is prevented.

Abstract: A direct positive photographic light-sensitive material is disclosed which comprises at least two direct positive emulsion layers having the same color sensitivity, wherein at least one hydrophilic colloid layer is provided between the direct positive emulsion layers. A direct positive photographic light-sensitive material having a high graininess, a soft tone, and a high picture quality can be obtained.

Abstract: A direct positive image forming method comprising development processing an imagewise exposed photographic light-sensitive material comprising a support having thereon at least on photographic emulsion layer containing internal latent image type silver halide grains not having been previously fogged in the presence of a nucleating agent, wherein the nucleating agent comprises at least two kinds of nucleating agents and a ratio of nucleating rates thereof is at least 2.0.In accordance with the method of the present invention, images having both a low minimum density and an extremely high maximum density can be rapidly and stably obtained using a small amount of nucleating agents.

Abstract: A method for forming a direct positive image comprising the steps of:(a) imagewise exposing a photographic light-sensitive material composed of a support having thereon at least one unprefogged internal latent image type silver halide light-sensitive emulsion layer; and(b) developing the exposed photographic light-sensitive material to form a direct positive image in the presence of at least one nucleating agent represented by formula (N-I); ##STR1## wherein Z.sup.1 represents nonmetal atomic group necessary for forming a 5-membered or 6-membered heterocyclic ring, a 5-membered or 6-membered heterocyclic ring fused with an aromatic ring, or a 5-membered or 6-member heterocyclic ring fused with another heterocyclic ring; R.sup.1 represents an aliphatic group; X represents ##STR2## Q represents a nonmetallic atomic group necessary for forming a 4-membered to 12-membered nonaromatic hydrocarbon ring or a 4-membered to 12-membered nonaromatic heterocyclic ring; provided that at least one of R.sup.1, Z.sup.

Abstract: A process for the formation of direct positive images comprising (1) imagewise exposing to light, a light-sensitive material comprising a photographic emulsion layer containing unfogged internal latent image type silver halide particles on at least one support, and (2) developing the light-sensitive material in the presence of a nucleating agent and at least one nucleation accelerator of general formula (I):A--(Y).sub.n R].sub.m (I)wherein A represents a group which is adsorbed by a silver halide; Y represents a divalent linkage group consisting of atoms or atomic groups selected from the group consisting of a hydrogen atom, a carbon atom, a nitrogen atom, an oxygen atom, and a sulfur atom; R represents an organic group containing at least one of a thioether group, an amino group, an ammonium group, an ether group, and a heterocyclic group; n represents an integer of 0 or 1; and m represents an integer of 1 or 2 to form direct positive images.

Abstract: The invention provides (1) direct positive photographic photosensitive materials in which at least one type of FR compound which releases fogging agent or development accelerator or a precursor thereof in accordance with the amount of silver developed when the silver halide is being developed is included in a direct positive photographic material comprising at least one layer of non-pre-fogged internal latent image type silver halide emulsion on a support, and (2) a method of forming direct positive images of which the distinguishing features are that in a method for the formation of direct positive images in which a direct positive photographic photosensitive material comprising at least one layer of non-pre-fogged internal latent image forming silver halide emulsion on a support is processed, after image exposure, in a surface developer, at least one type of FR compound which releases fogging agent or development accelerator or precursors thereof is included in the said photographic mateiral, and that the s

Abstract: A process for forming a direct positive color image is disclosed, the process comprising imagewise exposing a photosensitive material containing at least one emulsion layer of silver halide of internal latent image type, which has not been preliminarily fogged, and a color image-forming coupler; developing said material using a surface developing solution containing an aromatic primary amine color developing agent in the presence of a nucleating agent and/or in the condition that fogging exposure is carried out prior to the developing step or during the developing step; bleaching; and fixing, wherein said color coupler is a compound which is in itself substantially nondiffusible, and capable of forming or releasing a substantially nondiffusible dye upon oxidative coupling with said aromatic primary amine color developing agent and said development processing is carried out at a pH of 11.

Abstract: Disclosed is a method for processing a silver halide photographic material having at least one silver halide emulsion layer on a support and containing at least one hydrazine derivative in said silver halide emulsion layer or in another hydrophilic colloid layer with a roller-conveying type automatic developing machine using a dihydroxybenzene developer containing a sulfite preservative in an amount of 0.15 mol/liter or more at pH of 10.5 to 12.3, which method is characterized in that at least the roller which is in contact with both the developer and air, among the rollers of the said developing machine, is continuously rotated at a determined speed during conveyance or processing of the material during a processing phase, and intermittently rotated during a stand-by phase. By the method, the photographic material may be processed stably and rapidly for a long period of time to give an image having a high contrast and a high blackened density.

Abstract: A direct positive color image forming method which comprises processing an imagewise exposed photographic light-sensitive material with a surface color developing solution containing an aromatic primary amine color developing agent, after fogging treatment and/or during fogging treatment, wherein the photographic light-sensitive material comprises a support having thereon at least one internal latent image type silver halide emulsion layer that has not been previously fogged, a color image forming coupler, colloidal silver, and at least one compound represented by general formula (II): ##STR1## wherein Z represents an atomic group necessary for completing a 5-membered or 6-membered nitrogen-containing heterocyclic ring; D and D', which may be the same or different, each individually represents an atomic group necessary for completing an acidic nucleus and D and D' may be bonded to each other to form a cyclic structure; R.sup.

Abstract: A direct positive silver halide light-sensitive color photographic material comprising, on a support, (1) at least three light-sensitive silver halide emulsion layers containing internal latent image-type light-sensitive silver halide grains, (2) specific sensitizing dyes having formulas [I], [II] and [III], respectively defined in the specification, and (3) at least one anti-irradiation compound selected from the group consisting of those compounds having formulas [IV], [V] and [VI], respectively defined in the specification, is disclosed.

Abstract: The present invention relates to a process for forming a direct positive color image, wherein bleaching time is reduced and color reproduction is not deteriorated. According to the present invention, there is provided a process for forming a direct positive color image comprising exposing a photosensitive material comprising, on a support, at least one photographic emulsion layer containing previously unfogged internal latent image-type silver halide grains and a color image-forming coupler, color-developing the same in the presence of a nucleating agent and/or fogging light, and then processing it with a processing solution having a bleaching effect, characterized in that a bleaching accelerator is incorporated into the processing bath having the bleaching effect or a pre-processing bath, or said bleaching accelerator is incorporated into the photosensitive material.

Abstract: A process for forming a direct-positive image by developing an imagewise exposed photosensitive material, having on a support at least one photographic emulsion layer containing nonprefogged silver halide grains capable of forming an internal latent image, in which development is carried out in the presence of a combination of a nucleating agent and at least one compound having at least one mercapto group selected from a tetrazaindene, a triazaindene, and a pentaazaindene. The hydrogen atom of which mercapto group may optionally be further substituted with an alkali metal atom or an ammonium group. The invention process provides rapid and consistent formation of direct-positive images having high maximum density and low minimum density.

Abstract: A positive image forming method is disclosed. Said method comprises in sequence the steps of subjecting to imagewise exposure a silver halide photographic material having a silver halide emulsion layer containing a non-prefogged internal image forming silver halide, increasing the surface sensitivity of said silver halide in the substantial absence of water and performing development.

Abstract: A process for forming direct positive color photographic image is disclosed whereby a color photographic material having on a support at least one previously unfogged internal latent image-type silver halide emulsion layer and at least color forming coupler is developed, after imagewise exposure, with a surface color developer containing an aromatic primary amine color developing agent while applying thereto a fogging treatment, with or without the presence of a nucleating agent, before or during the development step, and bleaching and fixing (or blixing) the color photographic material, whereinthe pH of the surface color developer is not higher than 11.2,the color image forming coupler is a compound which is substantially non-diffusible and forms and releases a dye causing oxidative coupling with the aromatic primary amine color developing agent,and the surface of the silver halide in the internal latent image-type silver halide has been gold-sensitized.

Abstract: A direct positive photographic material having a support and a silver halide emulsion layer thereon contains internal latent image type silver halide grains. These grains have a core/shell structure and have not been previously fogged. Each grain comprises a conversion type silver halide core and a silver halide shell over the core.The layer would produce, when exposed for a given time upto one second and developed at 20.degree. C. for 4 minutes with a certain internal developing solution, a maximum density which is at least five times that obtained when the layer is similarly exposed and developed with a particular surface developing solution.

Abstract: The present invention relates to a process for forming a direct positive color image comprising(a) imagewise exposing a direct positive photosensitive silver halide color photographic material to light to yield an imagewise exposed material, said photographic material having a support and at least one silver halide emulsion layer thereon, said emulsion layer containing a coupler and internal latent image type silver halide crystals whose surfaces have not been fogged prior to said imagewise exposure, and(b) uniformly exposing to light the entire surface of said imagewise exposed photographic material before or during a development step and in the presence of a substance of Formula IV, a compound of formula I and a color-developing agent consisting of aromatic primary amino compounds selected from the group consisting of N-methyl-aminophenol, 4-amino-3-methyl-N-ethyl-N-(-methanesulfonamidoethyl) aniline,4-amino-3-methyl-N-ethyl-N-(-hydroxyethyl) aniline, 4-amino-3-methyl-N, N-diethyl-p-phenylenediamine, and 4-

Abstract: A process for forming a direct positive image which comprises image-wise exposing a light-sensitive material comprising a support having provided thereon at least one internal latent image type direct positive silver halide photographic emulsion layer, subjecting the selecting material to whole surface exposure before or during developing process, and then developing the resulting material in the presence of a quaternary salt type nucleating agent or a hydrazine type nucleating agent.The process is very high in the latitude for changes of expose amount, developing time, developing solution components, process temperature and the like and makes it possible to progress the development is a short time even in a low pH developing solution.

Abstract: In a method for forming a direct positive color image which comprises image-wise exposing to light a light-sensitive material comprising a support having provided thereon at least one photographic emulsion layer contaiing unfogged internal latent image type silver halide grains and a color image-forming coupler; developing the light-sensitive material with a surface developing solution containing an aromatic primary amine type color developing agent in the presence of a nucleating agent and/or fogging exposure; bleaching and fixing the resulting material to form the direct positive color image, the improvement is characterized in that the developing solution has a pH of 11.5 or less and does not substantially contain benzyl alcohol; the color coupler is a compound which forms or releases a substantially non-diffusive dye by oxidation coupling with a developing agent, and the internal latent image type silver halide grains have a particular core/shell structure.

Abstract: A direct positive silver halide photographic light-sensitive material is described containing a weak electron donative, adsorptive compound represented by formula (I) or (II) effective for depressing formation of a re-reversed negative image, which is not a spectral sensitizing agent for silver halide or a nucleating agent:D--L--X (I)D--X (II)whereinD represents electron donative atoms comprising an aromatic ring or hereto ring, which is unsubstituted or substituted;L represents a linking group containing at least one of C, N, S and O and an atom or atoms necessary for cutting a .pi.-conjunction system; andX represents a group which is adsorptive with respect to silver halide and contains at least one of C, N, S, O and Se.

Abstract: A direct positive photographic light-sensitive material is described, comprising a support and at least one internal latent image type silver halide emulsion layer containing core/shell type silver halide grains which are composed of a silver halide core subjected to at least one of doping with metal ions and chemical sensitization, and a silver halide shell covering at least sensitivity sites of said core, and a binder, wherein said core/shell type silver halide grains consist of two or more kinds of grains each having a different average grain size, and the core of the core/shell type silver halide grains having a larger average grain size is doped with a larger amount of lead ions, cadmium ions, or Group VIII metal ions.

Abstract: An internal latent image-type silver halide emulsion containing core/shell type silver halide grains with a mean grain size of about 0.4 .mu.m or less, the grains comprising a core of chemically sensitized silver halide and a shell of silver halide covering at least the light-sensitive sites of the core and the surface of the grains being chemically sensitized wherein the core is chemically sensitized to such an extent that the difference between fog density F.sub.1 and fog density F.sub.2 as defined herein (i.e., internal fog density) is at least 0.10. This emulsion permits the formation of good reversal images in which D.sub.max is high and D.sub.min is low and, furthermore, has a superior storage stability.

Abstract: Direct positive photographic elements are disclosed employing internal latent image silver halide emulsions associated with developer autoxidation promoter agents constituted by 5 or 6 membered nucleus-containing heterocyclic compounds comprising an azomethine group, whose methine group is substituted with a 5-amino-1,2,4-triazolyl group, and/or copper complex compounds thereof.Preferably said direct positive photographic elements are multi-layer elements comprising internal latent image type type silver halide emulsion layers sensitized to different regions of the visible light and associated with image-dye providing compounds (photographic color couplers).

Abstract: An internal latent image-type direct positive silver halide light-sensitive material is described, comprising a support having at least one photographic emulsion layer thereon, wherein said layer contains internal latent image-type direct positive silver halide grains, the surfaces of which are chemically sensitized, wherein a compound of the general formula (I) is added as a finish additive to the photographic emulsion layer or at least one hydrophilic colloid layer adjacent to the photographic emulsion layer.General Formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are defined as herein. The light-sensitive material exhibits a very satisfactory reversal performance and is greatly improved in stability over the course of time.

Abstract: A silver halide photographic light-sensitive material comprising a support having provided thereon at least one internal latent image type direct positive silver halide emulsion layer is disclosed, wherein(1) said internal latent image type direct positive silver halide emulsion layer comprises at least two layers having substantially the same color sensitivity, or(2) at least said internal latent image type direct positive silver halide emulsion and a solid pigment-containing layer contiguous thereto, which is positioned on the side opposite to the side of the silver halide emulsion layer to be exposed, are provided,and wherein at least one internal latent image type direct positive silver halide emulsion in (1) or (2) has a binder/silver halide (calculated as silver) ratio by weight of more than 1.25.

Abstract: A multilayer color photographic light-sensitive material containing no image-receiving layer is described, comprising a support, an internal latent image type direct reversal silver halide emulsion layer combined with a dye-providing substance, and a void layer between the support and the layer containing the dye-providing substance closest to the support.

Abstract: A previously unfogged internal latent image-type direct positive silver halide emulsion and a photographic material incorporating such emulsion are described, wherein the emulsion contains at least one sensitizing dye represented by formula (I): ##STR1## wherein one of R.sup.1 and R.sup.2 represents a sulfoalkyl group and the other thereof represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, or a pyridyl group; X represents a sulfur atom or an oxygen atom; Y represents a sulfur atom, an oxygen atom, or ##STR2## wherein R represents a lower alkyl group or --CH.sub.2).sub.n.sbsb.1 O--CH.sub.2).sub.n.sbsb.2 OH, wherein n.sub.1 and n.sub.2 each represents an integer of 1 to 4; and W represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, or an unsubstituted or substituted phenyl group.

Abstract: An internal latent image core/shell silver halide photographic emulsion containing core/shell silver halide grains is disclosed, the grains comprising a silver halide core which is doped with a metal ion or chemically sensitized or is both doped with a metal ion and chemically sensitized, and a silver halide shell which covers at least a sensitivity speck of the core, wherein both added iodine ion and a polymer having a specific repeating unit described in the specification are present on the surface of the core/shell silver halide grains. The emulsion has a high sensitivity even without chemical sensitization of the surface of core/shell silver halide grains.

Abstract: A black and white direct positive photographic element intended for the formation of a viewable silver image is disclosed. One or more silver halide emulsion layers are present containing internal latent image forming silver halide grains. A maximum density enhancing antifoggant is located in an undercoat between the emulsion layer or layers and the support to impart an increase in photographic speed, an extended overexposure margin before encountering rereversal, a decrease in minimum density, and an increase in the covering power of developed silver.

Abstract: An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photographic emulsion and thereafter adding additionally at least one cyanine dye represented by general formula (I) to said emulsion ##STR1## (the symbols are as defined in the appended claims). A remarkable increase of spectral sensitivity, an increase of maximum density and a decrease of minimum density can be obtained by this silver halide photographic emulsion.

Abstract: A method of processing a direct positive silver halide photographic light-sensitive material which comprises processing a direct positive silver halide photographic light-sensitive material comprising a support having coated thereon at least one hydrophilic colloid layer containing a compound represented by the following general formula (I):R.sup.1 NHNHCOR.sup.2 (I)wherein R.sup.1 represents an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group; and R.sup.2 represents a hydrogen atom, an unsubstituted or substituted aryl group or an unsubstituted or substituted alkyl group, with a developing solution containing not less than 25 g per liter of a hydroquinone and having a pH of from 11.0 to 13.0. According to the processing method an excellent reversal photographic image can be obtained using a high pH type developing solution which is stable wherein a change of pH due to exhaustion and aerial oxidation is considerably small.

Abstract: An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one monomethine cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photographic emulsion and thereafter adding additionally at least one monomethine cyanine dye represented by general formula (I) to said emulsion ##STR1## (the symbols are as defined in the appended claims). A remarkable increase of spectral sensitivity, an increase of maximum density and a decrease of minimum density can be obtained by this silver halide photographic emulsion.

Abstract: Blended emulsions for use in forming a direct-positive image are disclosed. The emulsions are comprised of a first, radiation-sensitive core-shell grain population having a relatively low coefficient of variation and a second, substantially smaller size grain population capable of .Iadd.internally forming a latent image by .Iaddend.internally trapping photolytically generated electrons. Photographic elements incorporating the blended emulsions exhibit improved covering power and can exhibit enhanced speed.

Abstract: Photographic elements particularly adapted for forming direct-positive images are disclosed in which a radiation-sensitive core-shell emulsion layer and a silver halide emulsion layer incapable of forming a surface latent image within the direct-positive exposure latitude of the first emulsion layer and containing a grain population capable of internally .Iadd.forming a latent image by internally .Iaddend.trapping photolytically generated electrons are both present. The photographic elements are capable of exhibiting increased covering power, greater maximum density, and increased speed.

Abstract: A method of processing a silver halide color reversal photographic light-sensitive material, in which the photographic light-sensitive material is developed, the method comprising a step of processing the photographic light-sensitive material in a reversal bath containing at least one anionic surface active agent. A method of treating a silver halide color reversal photographic light-sensitive material, in which the photographic light-sensitive material is developed, the method comprising a step of processing the photographic light-sensitive material in a reversal bath containing at least one nonionic surface active agent.