Abstract: A silver halide photographic light-sensitive material is disclosed which comprises a support and provided thereon, a light-sensitive silver halide emulsion layer containing silver halide grains, the silver halide grains are chemically sensitized by a selenium compound and spectrally sensitized by a dye represented by formula (S-1): ##STR1##

Abstract: A silver halide photographic material contains light-sensitive silver halide grains which are contained contained in a silver halide emulsion layer and which have been selenium sensitized. The silver halide emulsion layer also contains at least one compound represented by the following formula (I): ##STR1## The variables in the formula are defined in the specification.

Abstract: A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride, said emulsion being in reactive association with a sulfur donating compound and a phosphine compound represented by Formulae I and II, and polymers having a repeating unit derived from the compounds of Formula I,Formula (I) R.sup.18 R.sup.19 R.sup.20 PFormula (II) R.sup.21 R.sup.22 P--A--PR.sup.23 R.sup.24wherein R.sup.18, R.sup.19, R.sup.20, R.sup.21, R.sup.22, R.sup.23, and R.sup.24 are independently alkyl, or aryl groups, or R.sup.18, R.sup.19, R.sup.20, R.sup.21, R.sup.22, R.sup.23, and R.sup.24 may combine to form a 5 or 6-membered ring , and wherein A is a divalent carbon linking group, and a method of making the silver chloride emulsion.

Abstract: A silver halide photographic element comprising a support having thereon at least one light-sensitive silver halide emulsion layer and a transparent magnetic recording layer on the substrate, the transparent magnetic recording layer having barium ferrite platelet particles in a transparent binder, the barium ferrite platelet particles being aligned such that the easy axis of the particles is parallel to the substrate.

Abstract: A silver halide photographic material comprises a silver halide emulsion layer provided on a support. The silver halide emulsion layer contains a heterocyclic selenium or tellurium compound represented by the formula (Ia), (Ib), (Ic) or (Id): ##STR1## in which each of Ch.sup.1, Ch.sup.3, Ch.sup.6 and Ch.sup.12 is Se or Te; and each of Ch.sup.2, Ch.sup.4, Ch.sup.5, Ch.sup.7, Ch.sup.8, Ch.sup.9, Ch.sup.10, Ch.sup.11, Ch.sup.13, Ch.sup.14 and Ch.sup.15 is O, S, Se or Te. Other selenium or tellurium compounds are also disclosed.

Abstract: Disclosed is a silver halide color photographic photosensitive material in which the spectral sensitivity in the green short wavelength region is increased and which has excellent storage stability. The photosensitive material is sensitized by a selenium sensitizer represented by formula (I). Also, a green light sensitive photosensitive silver halide emulsion layer has been spectrally sensitized with a sensitizing dye represented by formula (II).

Abstract: A silver halide photographic light-sensitive material have at least one silver halide emulsion layer on a support, wherein at least one of the silver halide emulsion layers comprises an emulsion subjected to chemical sensitization with a selenium compound and spectral sensitization with at least one type of a methine compound represented by Formula (I) below: ##STR1## wherein R.sup.1 represents --(CH.sub.2).sub.r --CONHSO.sub.2 --R.sub.3, --(CH.sub.2).sub.s --SO.sub.2 NHCO--R.sup.4, --(CH.sub.2).sub.t --CONHCO--R.sup.5, or --(CH.sub.2).sub.u --SO.sub.2 NHSO.sub.2 --R.sup.6 ; 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; R.sup.2 has the same meaning as R.sup.1 or represents an alkyl group; Z.sup.1 and Z.sup.2 each represent a nonmetal atom group required to form a 5- or 6-membered heterocyclic ring; each of L.sub.1, L.sub.2, and L.sub.3 represents a methine group; X.sub.

Abstract: A silver halide photographic material has on a support at least one light-sensitive silver halide emulsion layer which comprises silver halide emulsion grains having a chloride content: of at least 50 mol % and containing a metal selected from rhodium, ruthenium and rhenium in an amount of at least 10.sup.-8 mole per mole of silver, said silver halide emulsion being spectrally sensitized with a compound of general formula (I) and being chemically sensitized with a selenium or tellurium compound: ##STR1## wherein Z and Z.sub.1 each represents a group of nonmetallic atoms necessary to complete a 5- or 6-membered nitrogen-containing heterocyclic nucleus; R and R.sub.1 each represents an unsubstituted or substituted alkyl group, or an unsubstituted aryl group; Q and Q.sub.1 each represents a group of atoms necessary to complete a 4-thiazolidinone, 5-thiazolidinone or 4-imidazolidinone nucleus; L, L.sub.1 and L.sub.2 each represents an unsubstituted or substituted methine group; n.sub.1 and n.sub.

Abstract: A silver halide photographic material comprises a silver halide emulsion layer provided on a support. In the photographic material of the present invention, the silver halide emulsion layer contains a compound represented by the formula (I): ##STR1## in which each of R.sup.1, R.sup.2 and R.sup.3 independently is a group of chain structure selected from an alkyl group, an alkenyl group, an alkynyl group and an alkylthio group, each of which may have one or more substituent groups; and the number of the carbon atoms contained in the compound represented by the formula (I) is 3 to 12. A process for sulfur sensitization of a silver halide emulsion using the compound represented by the formula (I) is also disclosed.

Abstract: A photochromic composition for incorporation into a light-transmitting polymer is described. Silver halide crystallites are capped with an organic capping group using multivalent metal ions integrated into the surface of the silver halide crystallite to provide crystallite surface sites that provide a handle between the organic capping group and the silver halide crystallites. The size of the capped silver halide crystallites are less than about 1000 .ANG.. A reverse micelle technique is used to control the size of the silver halide crystallite while integrating the multivalent ions and bonding the organic capping group. The capped crystallites are soluble in organic solvents and, as such, are readily incorporated into a polymer matrix.

Abstract: There is disclosed a silver halide photographic material which is sensitized with a novel selenium sensitizer. It provides less fog and markedly little sensitivity degradation during storage under a high temperature and humidity conditions, while providing the same level of a sensitivity. The silver halide photographic material contains at least one compound represented by the following Formula (I): ##STR1## Wherein R.sub.1 represents a substituted phenyl or condensed aryl group, an aliphatic group, a heterocyclic group, OR.sub.4, --NR.sub.5 (R.sub.6), SR.sub.7, SeR.sub.8, X.sub.1, or a hydrogen atom; R.sub.2 and R.sub.3 each represents an aliphatic group, an aromatic group, a heterocyclic group, OR.sub.9, --NR.sub.10 (R.sub.11), SR.sub.12, SeR.sub.13, X.sub.2, or a hydrogen atom; R.sub.5, R.sub.6, R.sub.10 and R.sub.11 each represents an aliphatic group, an aromatic group, a heterocyclic group, or a hydrogen atom; R.sub.4, R.sub.7, R.sub.8, R.sub.9, R.sub.12 and R.sub.

Abstract: A silver halide photographic light-sensitive material is disclosed, which is capable of forming an extremely high contrast image with high dot quality and is inhibited in formation of pepper spots. The light-sensitive material comprises a support, and provided thereon, a photographic layer including a silver halide emulsion layer, wherein the pH value of the surface of said photographic layer is 5.9 or more and said emulsion layer or a layer adjacent to said emulsion layer contains a specified hydrazine compound, and an amine compound or a quaternary onium compound.

Abstract: A silver halide photographic light-sensitive material of this invention is a silver halide photographic light-sensitive material having at least one silver halide emulsion layer on a support, wherein at least one of the silver halide emulsion layers contain at least one compound represented by formula (I): formula (I) ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represent an aliphatic group, an aromatic group, a heterocyclic group, OR.sub.4, NR.sub.5 (R.sub.6), SR.sub.7, OSiR.sub.8 (R.sub.9)(R.sub.10), TeR.sub.11, X, or a hydrogen atom, R.sub.4, R.sub.7, and R.sub.11 each represent an aliphatic group, an aromatic group, a heterocyclic group, a hydrogen atom, or a cation, R.sub.5 and R.sub.6 each represent an aliphatic group, an aromatic group, a heterocyclic group, or a hydrogen atom, R.sub.8, R.sub.9, and R.sub.10 each represent an aliphatic group, and X represents a halogen atom.

Abstract: A silver halide photographic material which comprises a support having provided thereon at least one light-sensitive emulsion layer, and which contains in said emulsion layer, or at least one other layer, at least one hydrazine derivative, at least one contrast enhancing agent and at least one redox compound capable of releasing a development inhibitor upon being oxidized. The hydrazine derivative is exemplified by compounds represented by the following formula: ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; and A.sub.1 and A.sub.2 both represent a hydrogen atom, or, alternatively, one of them represents a hydrogen atom and the other represents an alkylsulfonyl group, an arylsulfonyl group, or an acyl group.

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: This invention is a process of quickly forming high contrast negative images, which are useful for photomechanical process, by development-processing a silver halide photographic material containing a hydrazine derivative in at least one of silver halide emulsion layer(s) and other hydrophilic colloid layer(s) after imagewise exposure in the existence of a compound represented by general formula (A); ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represents an alkyl group, a cycloalkyl group, an aryl group, an alkenyl group, a cycloalkenyl group, or a heterocyclic ring residue, these groups may have a substituent; m represents an integer; L represents an m-valent organic group bonded to the P atom through a carbon atom; n represents an integer of 1 to 3; and X represents an n-valent anion; said X may be bonded to L; using a stable processing solution.

Abstract: Intramolecular nucleophilic displacement compound or a precursor thereof wherefrom during photographic processing a photographically useful group can be split off, said intramolecular nucleophilic displacement compound or precursor thereof corresponding to the following general structure (I): ##STR1## wherein Nu.sup.1 represents a nucelophilic group e.g. HO, H.sub.2 N or Hs, or a precursor of such nucleophilic group e.g. an oxidized nucleophilic group e.g. O.dbd. or HN.dbd., or RO wherein R is an alkyl, an acyl, an aryl or a trialkylsilanyl group, which groups may be substituted, the said nucleophilic group or precursor thereof being located in adjacent position to C(R.sup.1 R.sup.2) so as to make possible elimination of PUG through a nucleophilic displacement reaction;Ar represents an aryl group or a heteroaryl group (e.g. pyridine), which groups may be substituted by one or more mono-atomic or poly-atomic groups, e.g.

Abstract: A light-sensitive silver halide photographic material comprising a support and provided thereon a silver halide emulsion layer containing a magenta dye-forming coupler represented by formula (M-I) and a compound represented by formula (I): ##STR1## wherein Z represents a group of non-metal atoms necessary to complete a nitrogen-containing heterocylic ring which may have a substituent; X represents a hydrogen atom or a substituent capable of being split off upon reaction with the oxidized product of a color developing agent; and R represents a hydrogen atom or a substituent; ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent an aliphatic group or an aromatic group; and l, m, n independently represent 0 to 1 provided that l, m and n are not 1 at the same time is disclosed.

Abstract: The addition to an aqueous alkaline developer composition for silver halide photographic materials of a dialkylaminomethane diphosphonic acid compound sequestering agent increases the resistance of the developer composition against aerial oxidation and inhibits calcareous deposit formation.

Abstract: A negative silver halide photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer is disclosed. At least one of the silver halide emulsion layers or another hydrophilic colloidal layer of the material contains a hydrazine derivative and a compound represented by the formula:R.sub.1 --S--S--R.sub.2wherein R.sub.1 and R.sub.2, which may be the same or different, each represents an aliphatic group, an aromatic group or a heterocyclic group, or when R.sub.1 and R.sub.2 are both aliphatic groups they may together form a ring. The material can rapidly form a superhigh contrast image using a stable processing solution.

Abstract: A silver halide photographic material having at least one silver halide emulsion layer which contains silver halide grains containing from 1.times.10.sup.-8 to 8.times.10.sup.-6 mole of a rhodium salt per mole of silver, and containing in said emulsion layer or another hydrophilic colloidal layer a compound represented by formula (I)R.sup.1 -NHNH-G-R.sup.2 (I)wherein R.sup.1 represents an aliphatic group or an aromatic group; R.sup.2 represents a 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 an N-substituted or unsubstituted imino group; is exposed to imagewise pattern of light and then development-processed with a developer containing 0.15 mole/liter or more of sulfite ion and having a pH adjusted to from 9.5 to 12.

Abstract: A silver halide color photographic material is described, comprising a support having formed thereon at least one silver halide emulsion layer having dispersed therein, in a coexisting state, at least one magenta coupler represented by formula (I) and at least one high-boiling point organic solvent represented by the formula (II) ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent and x represents a hydrogen atom or a group capable of being released by a coupling reaction with the oxidation product of an aromatic primary amine developing agent; andwherein R.sup.3, R.sup.4, and R.sup.5 each represents an alkyl group, a cycloalkyl group, or an alkenyl group, and the total number of carbon atom of the groups R.sup.3, R.sup.4 and R.sup.5 is from 12 to 60.

Abstract: Compounds of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 independently of one another are hydrogen, alkyl or alkoxy and R.sub.2 additionally represents a radical of the formula ##STR2## in which R.sub.1 and R.sub.3 have the abovementioned meanings, R.sub.4 is unsubstituted or substituted phenoxy or unsubstituted or substituted amino and R.sub.5 is hydrogen or a radical of the formula ##STR3## in which R.sub.1, R.sub.3 and R.sub.4 have the abovementioned meanings and R.sub.2 ' has the same meanings as R.sub.1 and R.sub.3 are suitable development accelerators in the development of exposed, photographic materials containing silver halide.They accelerate the reduction of the exposed silver salt to silver and increase the speed of photographic material.

Abstract: The compounds of the formula ##STR1## in which R is amino, cyclic amino, aryloxy or a group of the formula ##STR2## in which L is a radical of the formula .dbd.N-Z, with Z being alkyl or cycloalkyl, or is a heterocyclic radical, aryleneoxy or oxyaryleneoxy and R' and R" are hydrogen, alkyl or halogen, and x and y are 0, 1, 2 or 3, are suitable development accelerators for the development of exposed photographic materials containing silver halide. They accelerate the reduction of the exposed silver salt to silver and thus enhance the sensitivity of the photographic material.

Abstract: A novel method of forming high contrast silver images is provided. The method comprises steps of (1) imagewisely exposing a light-sensitive silver halide photographic material, and (2) treating the exposed material with a developer having superadditivity. The method is characterized by the co-existence of an oxidizing agent, and a water-insoluble ion pair formed by a water-soluble cationic compound such as quaternary ammonium or tertiary sulfonium salt and a water-soluble anionic compound such as organic sulfate. The method realizes high contrast photographic images by using a developer having a good preservability, without contamination of the developer, within a short period of time for the development. There is also provided a light-sensitive silver halide photographic material herein.

Abstract: A high boiling solvent useful in silver halide materials is described by the following general formula: ##STR1## wherein R.sub.1 represents an alkyl radical, and each of R.sub.2 and R.sub.3 represent an aryl radical.

Abstract: A photographic silver halide material is disclosed which contains a precursor of photographic chemicals.

Abstract: A light-sensitive silver halide photographic material which comprises a compound represented by general formula [I] shown below:General formula [I] ##STR1## wherein A represents a phosphorus atom, a nitrogen atom or an arsenic atom; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent a substituted or unsubstituted aryl group; X represents a persulfate ion, a chlorate ion, a bromate ion, an iodate ion or a metal complex anion; and n is an integer of 1 to 4,and a method for processing the same.