Abstract: Disclosed is a silver halide photographic material which comprises at least one methine dye represented by the following formula (I): wherein Y represents a furan ring or a pyrrole ring, and Y may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring, or may have a substituent; the bond between two carbon atoms in which Y is condensed may be a single bond or a double bond; Z represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring, and Z may further be condensed with other 5- or 6-membered carbocyclic ring or heterocyclic ring; R represents a substituted or unsubstituted alkyl group, aryl group, or heterocyclic group; D represents a group necessary to form a methine dye; L1 and L2 each represents a methine group; p represents 0 or 1; M represents a counter ion; and m represents a number of 0 or higher necessary to neutralize the charge in the molecule.

Abstract: A photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of an intercalation composition comprising a layered host material having molecules of the photographically useful compound inserted as guest molecules between the layers of the host material. The invention provide novels materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element with improved stability and keeping response versus known methods for incorporating active chemistry compounds.

Abstract: A silver halide color photosensitive material has at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one red-sensitive silver halide emulsion layer containing a cyan coupler, and at least one non-lightsensitive layer, on a support. The photosensitive material contains, in at least one of the layers, a compound having a reducing group and a compound having at least three hetero atoms capable of increasing a photographic speed of the photosensitive material in comparison with the case where the material does not contain the same.

Abstract: A silver halide photographic material comprising at least one methine dye of formula (I) and at least one coupler of formula (X): wherein X1 and X2 each represents O, S, Se, Te, N or C; Y1 represents a furan, pyrrole or thiophene ring which may be condensed and substituted with the specific ring; Y2 represents an atomic group necessary for forming a benzene ring or a 5- or 6-membered unsaturated heterocycle; R1 and R2 each represents a substituted or unsubstituted alkyl, aryl or heterocyclic group; L1, L2 and L3 each represents a methine group; n1 represents 0 or 1; M1 represents a counter ion; and m1 represents a number of 0 or more necessary for neutralizing a charge in a molecule; wherein Z1 and Z2 each represents —C(Q3)═ or —N═; Q1 and Q3 each represents a hydrogen atom or a monovalent substituent group; Q2 represents a hydrogen atom or a coupling release group.

Abstract: A high-sensitive silver halide photographic light-sensitive material is provided. A silver halide photographic light-sensitive material comprising a dye having a plurality of dye chromophores, which contains at least one dye where at least one of the dye chromophores is a methine dye chromophore containing a basic nucleus comprising a monocyclic heterocyclic ring.

Abstract: The present invention provides organic dye compounds having their absorption maxima in a region ranging from the ultraviolet region to a relatively short wavelength visible region and uses thereof. The present invention provides specific monomethine cyanine dyes, light absorbents and optical recording media comprising the monomethine cyanine dyes, and a process for producing the monomethine cyanine dyes which comprises a step of reacting a quaternary ammonium salt of nitrogen atom-containing heterocyclic compound having a reactive methyl group with a quaternary ammonium salt of nitrogen atom-containing heterocyclic compound having an appropriate leaving group.

Abstract: A water-based coating composition is disclosed, comprising a latex comprising a polymer impregnated with an infared absorbing compound and a water-soluble polyester or latex comprising polyer containing an active methylene group. An infrared absorbing film and a photothermographic material by use thereof are also disclosed.

Abstract: A silver halide photographic emulsion is disclosed, comprising a silver halide grain having a spectral absorption maximum wavelength of less than 500 nm and a light absorption intensity of 60 or more or having a spectral absorption maximum wavelength of 500 nm or more and a light absorption intensity of 100 or more, wherein assuming that a maximum value of the spectral absorption factor of said emulsion by a sensitizing dye is Amax, the distance between the shortest wavelength showing 80% of Amax and the longest wavelength showing 80% of Amax is 20 nm or more and the distance between the shortest wavelength showing 50% of Amax and the longest wavelength showing 50% of Amax is 120 nm or less.

Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith a combination of two or more dyes comprising: (a) a first dye which is a cyanine dye of formula Ia and has a net charge of zero or −1  wherein the substituents are as defined in the specification; (b) a second dye which has at least one substituent that has a positive charge, and is a cyanine dye a merocyanine dye, arylidene dye, complex cyanine dye, complex merocyanine dye, homopolar cyanine dye, hemicyanine dye, styryl dye, hemioxonol dye, oxonol dye, anthraquinone dye, triphenylmethane dye, azo dye type, azomethines, or a coumarin dye, with the proviso that if the second dye is a cyanine dye, it is of formula IIa:  wherein the substituents are as defined in the specification; and wherein (c) the wavelength of maximum light absorption, in nanometers (nm), of the first dye and the wavele

Abstract: This invention comprises a multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said layers comprises large tabular grains having an average circular diameter of greater than 2 &mgr;m and contains a fragmentable electron donating compound is of the formula: X—Y′ or a compound which contains a moiety of the formula —X—Y′; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is a pr

Abstract: A multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said silver halide emulsion layers contains a tabular grain silver halide emulsion having a halide content of at least 95% bromide and less than about 5% iodide, said iodide being substantially uniformly distributed in the silver halide grains of said emulsion, and said emulsion is sensitized with a fragmentable electron donor of the formula X—Y′ or an electron donor which contains an —XY′ moiety; wherein

Abstract: Disclosed is a compound represented by the following formula (I): wherein Z1 represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; Z2 represents an atomic group necessary to form a 5- or 6-membered heterocyclic ring, Z2 may further be substituted, or may be condensed with a hetero ring or a benzene ring; R1 represents a hydrogen atom, a halogen atom, a mercapto group, an alkyl group, an alkenyl group, an aryl group, an alkylthio group, an alkenylthio group, or an arylthio group; L1 and L2 each represents a methine group; p1 represents 0 or 1; V1 represents a substituent; and n represents 0, 1 or 2, and when n represents 2, a plurality of V1 may be the same or different.

Abstract: This invention comprises a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith a combination of two or more dyes wherein (b) (a) a dye having at least one substituent that has a negative charge is present, a dye having at least one substituent that has a positive charge is present, wherein at least one of the dyes is further substituted with at least one hydrogen bonding donor substituent. In a preferred embodiment, at least one of the dyes is substituted with at least two hydrogen bonding donor substituents. In another preferred embodiment a silver halide photographic material comprises at least one silver halide emulsion comprising silver halide grains having associated therewith a dye substituted with at least one guanidinium, amidinium, or imine of urea substituent.

Abstract: Disclosed is a silver halide photographic material comprising a silver halide emulsion layer containing at least one specific compound, with examples including compounds represented by formula (I), wherein an average aspect ratio of silver halide emulsion grains constituting said silver halide emulsion layer is from 8 to 100: wherein Z1 represents atoms completing a 5- or 6-membered nitrogen-containing heterocyclic ring, L1, L2, L3 and L4 each represent a methine group, V1 represents a monovalent substituent, l1 is an integer of from 0 to 4, p1 is 0 or 1, n1 is 0, 1, 2 or 3, R1 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, M1 represents a counter ion for adjusting the electric charge balance, m1 is the number of counter ions necessary to render the molecule electrically neutral and ranges from 0 to 10, and La represents a methylene group.

Abstract: This invention comprises a photographic element comprising a support and at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula:Q-XYwherein Q represents the atoms necessary to form a chromophore comprising an amidinium-ion, a carboxyl-ion or dipolar-amidic chromophoric system when conjugated with XY, and XY is a fragmentable electron donor moiety in which X is an electron donor group and Y is a leaving group other than hydrogen, and wherein:1) XY has an oxidation potential between 0 and about 1.4 V;2) the oxidized form of XY undergoes a bond cleavage reaction to give the radical X.sup..cndot. and the leaving fragment Y.In a preferred embodiment of the invention, the radical X.cndot. has an oxidation potential <-0.7V.

Abstract: A color photographic silver halide material in which at least one of the blue-sensitive silver halide emulsions is doped with mercury and is spectrally sensitised with a sensitising dye of formula (I) ##STR1## wherein X.sub.1 and X.sub.2, independently of each other, denote O, S, Se, NR,R denotes alkyl or carboxyalkyl,R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 denote the remaining members for the completion of a phenanthro- or anthraazole ring, and the remaining R.sub.1 or R.sub.3 radical denotes a hydrogen atom,R.sub.4 and R.sub.5, independently of each other, denote a hydrogen atom, alkyl or aryl, orR.sub.4 and R.sub.5 jointly denote the remaining members of an unsubstituted or substituted benzazole, naphthazole, phenanthro- or anthraazole,S.sub.1 and S.sub.2, independently of each other, denote alkyl, sulphoallyl or carboxyalkyl, andM.sup.+ denotes a cation which is possibly necessary for charge equalisation,is distinguished by an improved latent image stability.

Abstract: A color photographic silver halide material, at least 95 mol. % of the silver halides of which consist of silver chloride, the blue-sensitive layer of which is spectrally sensitised with a dye of the formula I, ##STR1## in which R.sub.1 means 2-thienyl or 3-thienyl andZ means --O-- or --S-- andR.sub.2, R.sub.3, R.sub.4, R.sub.5 and X have the meaning stated in the description,and which contains a yellow coupler of the formula II ##STR2## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, Z.sub.1, Z.sub.2 and m have the meaning stated in the description, is distinguished by elevated sensitivity, low yellow fog and low secondary absorption of the yellow dye.

Abstract: A silver halide photosensitive material is described, which comprises at least one of the compounds represented by the following formula (I) ##STR1## wherein Z.sub.1 and Z.sub.2 each represents an atomic group necessary for forming a five- or six-membered nitrogen-containing heterocyclic ring, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group, an aryl group or a heterocyclic group, Q represents a divalent linking group or a single bond, with the proviso that at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and Q is substituted with a water-soluble group, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, L.sub.7 and L.sub.8 each represents a methine group, n.sub.1 and n.sub.2 each is 0, 1, 2, 3 or 4, p.sub.1 and p.sub.2 each is 0 or 1, M.sub.1 represents a charge equilibrium counter ion, and m.sub.1 is a number of from 0 to 10, which is necessary for neutralizing charge of the molecule.

Abstract: A silver halide color photographic material is provided comprising at least one yellow-developable silver halide emulsion layer, at least one magenta-developable silver halide emulsion layer and at least one cyan-developable silver halide emulsion layer on a support, characterized in that said at least one cyan-developable silver halide emulsion layer comprises at least one cyan dye-forming coupler represented by the following general formula (Ia) and silver bromochloride or silver chloride emulsion grains substantially free of silver iodide having a silver chloride content of 95 mol % or more spectrally sensitized with at least one sensitizing dye having a reduction potential of -1.27 V (vs. SCE) or lower: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--; Zb and Zc each represents --C(R.sub.4).dbd. or --N.dbd.; R.sub.1, R.sub.2 and R.sub.3 each represents an electron withdrawing group having a Hammett's substituent constant .sigma..sub.p value of 0.20 or more, with the proviso that the sum of .sigma.

Abstract: A silver halide photographic material is disclosed which comprises at least one of methine compounds represented by the following formula (I) ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkyl group; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6 and V.sub.7 are the same or different and each represents a hydrogen atom or a substituent; X.sub.1 represents a halogen atom; L.sub.1, L.sub.2 and L.sub.3 are the same or different and each represents a substituted or unsubstituted methine group; E represents an auxochrome; n represents a number of 0 or more; M.sub.1 represents an ion for neutralizing charge; and m.sub.1 represents a number of 0 or more necessary for neutralizing the molecular charge.

Abstract: A methine compound having a benzoxazole nucleus substituted by a meta-substituted aryl group and the methine compound represented by the following formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a substituted or unsubstituted alkyl group; Z.sub.1 represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; R.sub.3 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group, a halogen atom, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 are the same or different and each represents a substituted or unsubstituted methine group; n represents 0, 1, 2 or 3; M.sub.1 represents an ion for neutralizing charge; and m.sub.1 represents a number of 0 or more necessary for neutralizing the molecular charge.

Abstract: A silver halide color photographic light-sensitive material is disclosed, which is excellent in color reproducibility and storability and has lowered color stain.

Abstract: Selenomerocyanines, for example the compound having the structural formula ##STR1## a process for preparation thereof, methods of use thereof as photosensitizers for generation of singlet oxygen, virus inactivation and cancer cell inactivation, and photosensitized silver halide photographic emulsions containing them are disclosed.

Abstract: Disclosed is a photographic spectral sensitizing dye represented by the following formula (I), (II) or (III): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.5 or R.sub.7 each represents an alkyl group, an aralkyl group or an alkenyl group, R.sub.4 and R.sub.6 each represents an alkyl group, aralkyl group, an alkenyl group or an aryl group, L.sub.1 -L.sub.22 each represents a methine group, Z.sub.1 -Z.sub.4 each represents a group of atoms necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring, X.sub.1.sup.- and X.sub.2.sup.- each represents an acid anion and l, m, n, p, q, r, s, t and u each represents an integer of 1 or 2.Silver halide photographic emulsion containing the above sensitizing dye is also disclosed.

Abstract: A photographic material having an excellent rapid processability, a high sensitivity and a less sensitivity variation due to a change of standing of the silver halide emulsion in the course of preparation of the light-sensitive material, and its preparation process are disclosed. The silver halide photographic light-sensitive material comprises a support bearing at least one silver halide emulsion layer thereon, and at least one silver halide emulsion layer contains highly chloride-containing silver halide grains having a silver chloride content of not less than 90 mol %, a water-soluble bromide of from 0.05 mol % to 2 mol % per mol of silver halide and a high boiling organic solvent having a dielectric constant of not higher than 6.0.

Abstract: A silver halide light-sensitive material is disclosed, comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising silver halide grains and a binder, at least about 50 wt % of said silver halide grains comprising a silver halide grain matrix having thereon from about 10 to 10,000 protrusions per square micrometer of grain matrix surface, said individual protrusions having an average projected area diameter of up to about 0.15 .mu.m, and a halogen composition of said protrusions differing from that of the grain matrix; said silver halide emulsion being chemically sensitized with at least one compound selected from the group consisting of a sulfur compound, a selenium compound, a reducing compound and a noble metal compound; and said silver halide emulsion being spectrally sensitized with a methine dye.

Abstract: A silver halide photographic emulsion comprising at least one spectral sensitizing dye having the following general formula (I):Dye--J.sup.1 --CONH--J.sup.2 --NHNHG--R (I)wherein Dye represents a dye residue capable of becoming a spectral sensitizing dye; J.sup.1 represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted arylene group, a substituted or unsubstituted aralkylene group, or a substituted or unsubstituted alkarylene group; J.sup.2 represents a substituted or unsubstituted arylene group; R represents hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group; and G represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or a substituted or unsubstituted iminomethylene group.

Abstract: A heat-developable light-sensitive material comprising a support having thereon at least a light-sensitive silver halide emulsion, an organic silver salt, and a binder, wherein silver halide grains in the silver halide emulsion are formed in the presence of sensitizing dyes. This light-sensitive material is greatly improved in its storage stability.

Abstract: A silver halide photographic light-sensitive material having high sensitivity and high covering power, particularly suitable for use in radiography comprising on a support, a silver halide emulsion layer having silver halide grains which have a grain-size distribution curve comprising at least two peaks of which in the mode form, the highest peak mode and another peak mode adjacent thereto stand leaving a space of 0.10.mu. to 0.30.mu. therebetween. An orthochromatic dye-sensitizer increases the sensitivity.

Abstract: Compounds containing an aromatic ring portion fused with a tellurazolium or derivative tellurazole, tellurazoline (including tellurazolinylidene), or tellurazolinium ring portion are disclosed together with processes and intermediates for their preparation. With properly selected pendant groups these tellurazolium and derivative compounds can be usefully employed as dyes, antifoggants or stabilizers, nucleating agents, latent image keeping addenda, or speed or contrast altering addenda in silver halide photographic systems.

Abstract: Photo-sensitive silver halide compositions and elements are spectrally sensitized with new mathine dyes having a trialkylsilylalkyl group attached to a nitrogen atom in a heterocyclic nucleus of the dye.

Abstract: Novel xanthene dye developer compounds which include three or four silver halide developing groups are disclosed. Also described are photographic products and processes utilizing the dye developers.