摘要:
An object of the present invention is to provide a silver halide photographic light-sensitive material which is reduced in the various problems ascribable to the multilayer adsorption of a sensitizing dye. A silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers is described, wherein the variation coefficient of the light absorption strength distribution among the grains is 100% or less.
摘要:
A silver halide photographic emulsion which contains at least two sensitizing dyes represented by the following formula (I): Dye-((A)rQ)q(M)m (I) wherein Dye represents a dye moiety; A represents a linking group; Q represents a dissociable group; r represents 0 or 1; q represents an integer of 2 or more; provided that at least one Q represents —SO3H and at least one Q represents a dissociable group other than —SO3H; M represents a counter ion; and m represents a number of 0 or more necessary to neutralize the electric charge in the molecule, and when 2 represents 2 or more, M's need not be the same.
摘要:
A silver halide photographic material is disclosed, comprising at least one silver halide emulsion layer provided on a support, the emulsion layer comprising a silver halide emulsion containing at least two sensitizing dyes represented by the following general formula (I): wherein X represents an oxygen atom, sulfur atom, selenium atom or NR′; R and R′ each represent a substituted or unsubstituted alkyl, aryl or heterocyclic group; D represents a group required to form a methine dye; M represents a counter ion; and m represents a number of not smaller than 0 required to neutralize the electric charge in the molecule.
摘要:
A heat-developable photosensitive material comprises: a support; a photosensitive silver halide; a non-photosensitive organic silver salt; a reducing agent for a silver ion; a binder; and a compound having specified structure.
摘要:
The present invention provides a silver halide photographic material that is excellent in photographic speed as well as image graininess and exhibits low residual color even after rapid processing. The silver halide photographic material contains a compound represented by formula (I) and a compound represented by formula (II), as defined.
摘要:
A silver halide color photographic lightsensitive material comprising at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer on a support, wherein the lightsensitive material has an ISO speed of 640 or more, and has a variation, in terms of a SNGR ratio, of magenta and cyan colors of 0 dB or more when the lightsensitive material is subjected to each of white light exposure, white fluorescent lamp exposure and three band fluorescent lamp exposure.
摘要:
A Silver halide photographic material high in sensitivity and decreased in residual color is disclosed, which comprises at least one compound represented by the following formula (I): wherein Z1 represents an oxygen atom, a sulfur atom, a selenium atom, a tellurium atom, a carbon atom or a nitrogen atom; Q represents a group necessary for forming a methine dye; M1 represents a charge equilibrium counter ion; m1 represents the number necessary for neutralizing a charge of the molecule; Vp represents a group having a log P value lower than that of Cl; q1 represents 1, 2, 3 or 4; and R1 is represented by following: R1=(La)k1CONHSO2R11, R1=(Lb)k2SO2NHCOR12, R1=(Lc)k3CONHCOR13, R1=(Ld)k4SO2NHSO2R14 wherein R11, R12, R13 and R14 each represents an alkyl group, an aryl group, a heterocyclic group, an alkoxyl group, an aryloxy group, a heterocyclyloxy group or an amino group; La, Lb, Lc and Ld each represents a methylene group; and k1, k2, k3 a nd k4 each represents an integer of 1 to 18.
摘要:
A highly sensitive silver halide photographic material is described, which comprises at least one light-sensitive silver halide emulsion layer comprising at least one hemicyanine, hemioxonol, bishemicyanine or bishemioxonol dye having a particular structure and silver halide grains having an aspect ratio of from 3 to 50 or which comprises at least one light-sensitive silver halide emulsion layer comprising at least one bishemicyanine dye having a particular structure and silver halide grains at least 50%, based on projected area, of which are grains having a silver chloride content of at least 50 mole % and an outer surface at least 50% of which is constituted of (111) faces.
摘要:
A silver halide photographic light-sensitive material is disclosed. The material comprises a substrate provided thereon with at least one silver halide emulsion layer comprising at least one compound represented by the following Formula (I): ##STR1## wherein Ra and Rb each represents a hydrogen atom, an alkyl group having at least two carbon atoms or an aryl or heterocyclic group, provided that Ra and Rb do not simultaneously represent hydrogen atoms; La and Lb each represents a methylene group; L.sub.1 and L.sub.2 each represents a methine group; p.sub.1 represents 0 or 1; Z.sub.1 represents an atomic group required for forming a 5- or 6-membered nitrogen atom-containing heterocyclic ring; M.sub.1 represents a counterion required for balancing the electrical charge; m.sub.1 represents a numerical value of not less than 0 required for neutralizing the molecule; and Q represents a methine or polymethine group required for forming a methine dye. The light-sensitive material provides substantially low fogging, has high sensitivity and excellent storage stability and can provide images of high quality.
摘要:
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.