Abstract: A silver halide photographic sensitive element for flash exposure having at least a photographic silver halide emulsion layer which is characterized by containing at least a sensitizing dye having a reduction potential in a range of -0.7 volts - -1.7 volts and at least a sensitizing dye having a reduction potential in a range of -0.7 volts - -1.7 volts and an oxidation potential of larger than a value which is approximately 0.5 volts smaller than the oxidation potential of said sensitizing dye or at least a substantially colorless compound having an oxidation potential of larger than a value which is approximately 0.5 volts smaller than the oxidation potential of said sensitizing dye as the combination having a supersensitization function.

Abstract: A photographic light-sensitive material comprising a support having thereon a hydrophilic colloid layer containing at least two surface active agents selected from the group consisting of compounds represented by the general formula (I) ##EQU1## and the general formula (II)R.sub.3 -- SO.sub.3 M (II)wherein R.sub.1 and R.sub.2 each represents an aliphatic residue with the sum of the number of carbon atoms contained in R.sub.1 and R.sub.2 ranging from about 8 to 32; R.sub.3 represents an aliphatic residue having about 8 to 20 carbon atoms; and M represents a cation or a cationic group capable of forming a salt with a sulfonic acid. The surface active agents have no toxic physiological action and high biodegradability.

Abstract: A photographic material comprising a support having thereon a photosensitive silver halide emulsion layer containing a hydroquinone derivative which releases a development inhibitor or a development accelerator at development and including an absorbing colloid layer for adsorbing the development inhibitor or accelerator containing silver halide particles which are not substantially developed by development on the silver halide emulsion layer or between the silver halide emulsion layer and the support.

Abstract: A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.

Abstract: A color photographic light-sensitive material having a silver halide emulsion layer containing a 1-phenyl-2-pyrazol-5-one magenta color-forming coupler, in which the 1-phenyl group of the coupler is substituted (1) with a R.sub.1 OOC-group, wherein R.sub.1 represents a group having about 8 to 26 carbon atoms, or (2) with a R.sub.2 OOC-group and a R.sub.3 OOC-group, wherein R.sub.2 and R.sub.3, which may be the same or different, each represents a group having about 4 to 18 carbon atoms; and in which the 3-position of the pyrazolone is substituted with an acylamino group, an ureido group, an alkoxy group, an amino group or an anilino group. The color photographic light-sensitive material provides stable magenta dye images having good spectral absorption characteristics.

Abstract: A silver halide photographic light-sensitive element suitable for exposure to light for a period of time of less than (preferably) 0.0001 second comprising a support bearing thereon at least one layer of a silver halide photographic emulsion, the silver halide photographic emulsion containing at least one sensitizing dye represented by the following General Formula (I) in combination with at least one sensitizing dye represented by the following General Formula (II): ##SPC1##wherein R.sub.1 and R.sub.2 each represents an alkyl group, at least one of R.sub.1 and R.sub.2 being an alkyl group having a sulfo substituent; ##SPC2##Wherein R.sub.B represents a methyl group or an ethyl group, R.sub.3 and R.sub.4 have the same meaning as R.sub.1 and R.sub.2, at least one of R.sub.3 and R.sub.4 being an alkyl group having a sulfo substituent.

Abstract: A multi-layer color photographic light-sensitive material providing clear and sharp color images of improved color reproduction which comprises a support having thereon at least two hydrophillic colloid layers, at least one of the hydrophillic colloid layers being a light-sensitive silver halide emulsion layer, at least one of the hydrophilic colloid layers containing a basic synthetic polymer and at least one of the hydrophillic colloid layers containing a surface active agent represented by the General Formula (II) ##EQU1## wherein D.sub.1 and D.sub.2 each represents an aliphatic group having 4 to 20 carbon atoms, and M represents a cation; or the General Formula (III).sup.+m'0.sub.3 s.sup.---(o).sub.b-1 --D.sub.3 (III)wherein D.sub.3 represents an aliphatic group having 6 to 40 carbon atoms, M' represents a cation, and b represents 1 or 2.

Abstract: A sensitized gelatino-silver halide emulsion comprising a supersensitizing combination of at least one sensitizing dye represented by general formula I: ##SPC1##wherein R.sub.1, R.sub.2 and R.sub.3 are each a member selected from the group consisting of an alkyl having up to 6 carbon atoms and a substituted alkyl group having up to 6 carbon atoms, at least one of R.sub.1, R.sub.2 and R.sub.3 being a substituted alkyl group having a sulfo group therein; R.sub.4 is a hydrogen atom or forms an alkylene linkage together with R.sub.2 ; Z.sub.1 is an atomic group necessary for completing a benzimidazole nucleus; A.sub.1 and A.sub.2 are each a member selected from the group consisting of a hydrogen atom, a phenyl group, a halogen atom, a carboxyl group, an alkoxy carbonyl group, an alkyl group, an alkoxyl group, a hydroxyl group, a trifluoromethyl group, and a cyano group, A.sub.2 being capable of condensing with A.sub.1 or A.sub.3 to form a benzene nucleus; and A.sub.

Abstract: A direct positive silver halide photographic emulsion containing1. at least one dimethine dye having the general formula (I): ##EQU1## 2. AT LEAST ONE COMPOUND HAVING THE GENERAL FORMULA (II): ##SPC1##3. at least one compound having the general formula (III) ##EQU2## or the general formula (IV) ##SPC2##wherein Y, Y.sub.o, Z, L.sub.1, L.sub.2, R.sub.o, m, n, X, Z.sub.1, R.sub.1, X.sub.1, a, p, q, Y.sub.1, Y.sub.2, m.sub.1, R.sub.3, r, X.sub.2 and X.sub.3 are as hereinafter defined.

Abstract: A silver halide photographic photosensitive element having a hydrophilic colloidal layer prepared by dispersing photographic additives in a fatty oil which is liquid at room temperature; which boils at temperatures higher than 250.degree.C under atmospheric pressure; which is soluble in water in a proportion of less than about 10% by weight at 25.degree.C; and which dissolves water in a proportion of less than about 5% by weight at 25.degree.C, and a developing method thereof.

Abstract: A color photographic silver halide light-sensitive material which comprises a support having thereon at least two light-sensitive layers, at least one of said layers containing a compound capable of coupling with an oxidation product of a color developing agent and in which splitable hetero aromatic ring containing a triazole or diazole ring is connected to the carbon atom in the coupling position, through the nitrogen atom in the 1-position of said triazole or diazole ring.

Abstract: A silver halide photographic emulsion which contains in combination a supersensitizing amount of at least one pseudocyanine sensitizing dye and at least one oxacarbocyanine sensitizing dye.

Abstract: A silver halide photographic emulsion for direct positives, containing a fluorene compound having at least one nitro group as a substituent.

Abstract: A light-sensitive silver halide material for the high temperature and rapid color development at least 30.degree.C, which light-sensitive silver halide material comprises at least one spectrally sensitized silver halide photographic emulsion layer, the emulsion layer containing at least one sensitizing dye having an halogen ion concentration increasing effect.

Abstract: An incorporated-coupler type multi-layer color photographic sensitive material comprising a support and at least two photosensitive emulsion layers thereon which form images having a different color from each other on color development, wherein at least one of the photosensitive emulsion layers comprises two or more unit layers, with at least one of the unit layers containing a hydroquinone derivative. Interlayer color correction is obtained in the color photographic sensitive material.