Abstract: A method is disclosed for the preparation of silver halide tabular emulsion grains, containing at least 75% chloride, wherein at least 50% of the total projected area of all the grains is provided by said tabular grains, and wherein said tabular grains exhibit an average aspect ratio of at least 5:1, an average thickness not greater than 0.5 micron and an average diameter of at least 0.6 micron, by a process comprising the following steps:(1) preparing a dispersion medium containing a gelatino-peptizer, and performing the precipitation of the silver halide grains under the following conditions:(a) the chloride ion concentration in the dispersion medium is lower than 0.15 molar at the start of the precipitation and remains lower than 0.15 molar during the whole precipitation, and pH is maintained between 5.0 and 9.

Abstract: There is disclosed the light-sensitive element having a high sensitivity and capable of forming a transferred image with a small fluctuation in a sensitivity and a gradation.

Abstract: A silver halide photographic material comprising at least one photosensitive emulsion layer contains silver halide grains on a support. In the silver halide photographic material, (1) the silver halide grains are prepared in the presence of iridium compounds, (2) the silver halide grains consist of silver chlorobromide which is essentially free of silver iodide, (3) at least 90 mol% of all silver halide from which the silver halide grains are made is silver chloride, (4) the silver halide grains have localized phase in which the silver bromide content exceeds at least 20 mol%, (5) the localized phase is precipitated together with at least 50% of all the iridium which is added during the preparation of the silver halide grains, and (6) the surface of the silver halide grains is chemically sensitized to the extent that the grains are essentially of the surface latent image type.

Abstract: The present disclosure describes a method called the rinse test for determining where silver is being lost and the variability of this loss in a photographic emulsion manufacturing process. Results from this method can be used to determine what parts of the emulsion manufacturing process should be improved to increase silver yield thereby reducing manufacturing costs and what parts of the emulsion manufacturing process should be improved to reduce silver loss variability thereby improving an emulsion's sensitometric response. The photographic emulsion manufacturing process includes at least one kettle and a plurality of processing equipment which may include sections of pipe, permeators, mixers and pumps. The silver loss is determined by adding water to a kettle after the product has been removed from but prior to cleaning of this kettle. The concentration of silver in this rinse water is measured and the amount of silver is determined.

Abstract: Silver halide emulsions can be prepared by precipitating the silver halide grains in the presence of a peptizer comprising a water-soluble starch, said peptizer exhibiting an absorbance of less than 1.0 in the wavelength region 200 to 400 nm when measured at a concentration of 2 g/L through a 1 cm transmission path. A useful water-soluble starch having this property is potato starch. Silver halide elements sensitive in the short ultraviolet spectral region can be prepared with these emulsions.

Abstract: There is disclosed a silver halide photographic material having a photosensitive emulsion layer on a base, comprising a high-silver-chloride silver chlorobromide emulsion which is obtained by forming, on or near the surfaces of silver halide grains, silver bromide localized phases, and then by conducting chemical sensitization and is ripened under a condition having a limited pH. The disclosure described provides a silver halide photographic material suitable for rapid processing, high in sensitivity, and good in safelight aptitude and latent-image stability.

Abstract: A silver halide color light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support. The emulsion layer comprises silver halide grains which have been formed in the presence of a complex of rhenium, molybdenum, iridium, rhodium, ruthenium, osmium, cadmium, zinc, palladium, platinum, gold, iron, nickel, cobalt, tungsten, or chromium each having at least one cyanate ligand, isocyanate ligand or fluminate ligand. The light-sensitive material is high in speed, low in fog and excellent in reciprocity low failure characteristics.

Abstract: A chemically sensitized high chloride tabular grain emulsion is disclosed. The tabular grains have {100} major faces. Chemically sensitized silver halide epitaxial deposits containing less than 75 percent of the chloride ion concentration of the tabular grains and accounting for less than 20 mole percent of total silver are located at one or more of the corners of the tabular grains.The emulsions are prepared by first forming the host tabular grains, epitaxially depositing silver halide selected to contain less than 50 percent of the chloride ion concentration of the tabular grains, adsorbing a photographically useful compound to the surfaces of the silver halide epitaxial deposits, and chemically digesting the emulsion.

Abstract: The invention is generally accomplished by at the end of precipitation of a bromoiodide silver halide emulsion, adding a soluble chloride salt to the precipitation prior to emulsion washing. The chloride salt may be added in an amount between 0.05 and about 5 moles per liter of the precipitation. Further, it is preferred that after adding the chloride, the precipitation be held for at least about 10 minutes after the chloride salt addition prior to the washing to remove salts. Further, it is preferred that the salt removal, holding after chloride addition, and precipitation be carried out at about the same temperature.

Abstract: A silver halide emulsion comprising a dispersing medium and light-sensitive silver halide grains wherein said silver halide grains each comprise:(a) a high silver iodide-containing phase having a silver iodide content of not less than 15 mol % in the internal portion,(b) a low silver iodide-containing phase locating outside the phase (a) and having a silver iodide content lower than that of the phase (a), and(c) a surface phase having a silver iodide content higher than that of an inner phase adjacent thereto,and wherein a part or all of the phase (c) and a part or all of the phase (a) or the phase (b) are formed by supplying a fine silver halide grain emulsion prepared in the presence of protective colloid.

Abstract: While preparing a photographic emulsion a conductivity reading is continuously or periodically taken from the batch during creation. The conductivity of the batch is compared to a standard plot of conductivity versus time representing an ideal batch preparation process. When conductivity of the batch deviates from the standard plot by more than a pre-determined level, an operator can discard the batch, compensate for the deviations, identify the cause of the deviation for use in correcting existing processes and procedures or optimizing future procedures, or compensate for the deviations.

Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support, and the silver halide emulsion layer comprises a hydrogen peroxide-treated gelatin in a ratio of not lower than 20% by weight to the total amount of gelatin contained in the silver halide emulsion layer and silver halide grains composed of silver chlorobromide having a silver chloride content of not lower than 90 mol %. The light-sensitive material is improved in the stability of emulsion coating solutions.

Abstract: A process is disclosed of preparing an emulsion for photographic use comprised of silver halide grains and a gelatino-peptizer dispersing medium in which morphologically unstable tabular grains having {111} major faces account for greater than 50 percent of total grain projected area and contain at least 50 mole percent chloride, based on silver. The emulsion additionally contains at least one 2-hydroaminoazine adsorbed to and morphologically stabilizing the tabular grains. A silver salt is epitaxially deposited epitaxially at one or more corners of the tabular grains. Protonation releases 2-hydroaminoazine from the tabular grain surfaces into the dispersing medium.

Abstract: A multicolor photographic element capable of forming a viewable reversal dye image is disclosed comprising a support and, coated on the support, a blue recording yellow dye image forming layer unit, a green recording magenta dye image forming layer unit, and a red recording cyan dye image forming layer unit, each of the layer units containing in at least one layer a silver halide emulsion having a grain halide content of from 0 to 5 mole percent chloride, from. 0.5 to 20 mole percent iodide, and from 80 to 99.5 mole percent bromide, based on total silver.The photographic element is characterized in that at least one of the silver halide emulsion layers is a tabular grain emulsion layer in which the coefficient of variation of the tabular grain emulsion is less than 15 percent, based on the total grain population of the emulsion, and the total grain population of the tabular emulsion consists essentially of tabular grains having a mean thickness of less than 0.3 .mu.m and a mean tabularity of greater than 25.

Abstract: A process and apparatus for producing silver halide grains wherein by removing water, etc., from a liquid containing fine, silver halide grains formed in a mixer and being added to a reaction vessel, the yield of the silver halide grains grown in the reaction vessel per unit amount of the raw materials used is increased. Also, by removing a portion of the water, used for the dilution, from the liquid being added to the reaction before the addition thereof, the amount of diluting water effective for the formation of silver halide fine grains in the mixer is increased, to thereby form finer silver halide grains in the mixer.

Abstract: A silver halide photographic light-sensitive material comprising a support, and a plurality of silver halide emulsion layers formed on the support, at least one of the emulsion layers containing regular silver halide grains, at least 30% or more of which have dislocation lines internally, and the sensitivity specks in each of the grains having dislocation lines being distributed with the maximal value at the depth of about at least about 2 nm and less than 50 nm from the surface of the silver halide grains. The regular silver halide grains have a diameter of about 0.1 to 5.0 .mu.m, a variation coefficient of 20% or less in terms of the distribution of their sizes. Each of the grains has a surface comprising, mainly, a (100) face. The grains have high sensitivity achieved by increasing latent image forming efficiency, not light absorption. The light-sensitive material has a high storage stability.

Abstract: A method of preparing a superfine grain emulsion with a grain size of 0.05 .mu.m or less is provided, which includes mixing aqueous solutions of a water-soluble silver salt and a water-soluble halide with vigorous stirring inside a closed mixing device furnished with an agitator, where the solutions are fed into the device simultaneously and continuously, in the presence of at least one of a high molecular compound and a substance capable of adsorbing to silver halide, each of which has a physical retardance value of at least 40 as determined by PAGI method, and immediately expelling the newly-formed grains from the mixing device. Another method includes mixing the aqueous solutions in a mixing device as described above, immediately expelling the newly-formed grains from the device, and mixing the expelled grains with at least one of the above-described high molecular compound and substance.

Abstract: A radiation sensitive emulsion is disclosed containing a silver halide grain population internally free of iodide at the site of grain nucleation comprised of at least 50 mole percent chloride, based on total silver forming the grain population. Greater than 50 percent of the grain population projected area is accounted for by {100} tabular grains which have an average aspect ratio of up to 7.5.

Abstract: A silver halide photographic light-sensitive material comprises a silver halide photographic emulsion containing tabular silver halide twin crystal grains having a ratio of grain diameter to thickness of less than 5, wherein projection areas of said silver halide grains are 50% or more of total projection area of all grains; and said silver halide grains are monodipersed and have relatively high iodide content in the interior of the grain. The silver halide grain emulsion is prepared by supplying a silver component and a halide component in the presence of continuously supplied silver halide grains whose solubility product is lower than that of growing monodispersed silver halide grains for at least a given period of time during the grain growth. The photographic material provides improved sensitivity and image quality.

Abstract: A silver halide emulsion having a high silver chloride content of about 95 mol % or more, wherein about 30% by number or by weight or more of the silver halide grains are those having one twin plane in the crystal such that the crystal planes constituting the surface of each grain consist essentially of (100) planes and having a silver bromide-localized phase having a relatively higher silver bromide content in the part of intersection of the twin plane and the surface of the grain and suitable for rapid processing with high sensitivity and excellent gradation characteristic and reciprocity law characteristic.

Abstract: A light-sensitive silver halide photographic material that can give an improved blackness of the silver-formed image by the development, having a high sensitivity with a high covering power, is disclosed. The material comprises a silver halide emulsion layer containing silver halide tabular grains which have an aspect ratio of not less than 3, covering not less than 50% of the total sum of projected areas, and the layer comprises a compound represented formula I, ##STR1## wherein Rs and Ms represent as specified in the claims.

Abstract: A method of manufacturing a silver halide emulsion, wherein reduction sensitization is performed by using at least one of ascorbic acid and derivatives thereof in a process of manufacturing a silver halide emulsion. The invention is further directed to a of manufacturing a silver halide emulsion, wherein reduction sensitization is performed by using at least one of ascorbic acid and derivatives thereof during precipitation of silver halide grains.

Abstract: The invention is generally accomplished by a method of forming a silver halide emulsion in which digestion of nucleated silver halide grains is carried out in a halide solvent concentration of between about 0.0015 and about 0.015 normal. In a preferred embodiment the solvent utilized is ammonium hydroxide and grains of a thickness of between about 0.05 and 0.5 micron having an equivalent circular diameter of about 0.05 to about 2.0 microns are produced. It is also preferred that the grains be nucleated in a bromide solution having a bromide ion concentration of between 0.0075 and about 0.6 normal.

Abstract: A method of preparing silver halide grains for a photographic emulsion which has a constant mass production qualities and a controlled crystalization technique is disclosed. The first reaction of halides and silver is performed in a mixer with a blades of high speed then the fine crystals of silver halide are kept in an adjusting vessel where monitoring and control devices are provided and the fine crystals are supplied to a parent tank for ripening the crystals prepared in the parent tank.

Abstract: A radiographic element is disclosed comprised of a film support capable of transmitting radiation to which the radiographic element is responsive having opposed major surfaces, and, coated on the opposed major surfaces, spectrally sensitized high tabularity tabular grain emulsion layer units, and, interposed between each of the emulsion layer units and the support, means for absorbing radiation to which said emulsion layer units are responsive. The emulsion layer units exhibit a coefficient of variation of less than 15 percent, based on the total grain population having an equivalent circular diameter of greater than 0.1 .mu.m, and greater than 97 percent of the projected area of grains having an equivalent circular diameter of greater than 0.1 .mu.m is accounted for by tabular grains having a mean thickness of less than 0.3 .mu.m and a halide content of from 0 to 5 mole percent chloride, from 0 to 5 mole percent iodide, and from 90 to 100 mole percent bromide, based on total silver.

Abstract: A process is disclosed of accelerating the preparation of a photographic emulsion containing tabular silver halide grains exhibiting a reduced degree of total grain dispersity. A dispersing medium is provided containing bromide ions, and a population of silver halide grain nuclei containing parallel twin planes is formed in the dispersing medium. A portion of the grain nuclei are ripened out, and then the silver halide grain nuclei containing parallel twin planes remaining are grown to form tabular silver halide grains. A polyalkylene oxide containing both hydrophilic and lipophilic block units is selected from among those known to be capable of reducing total grain dispersity when present during nucleation. However, in this process precipitation is accelerated while maintaining low dispersity of the total grain population by forming twin planes in the grain nuclei within the pAg and temperature boundaries of Curve A in FIG.

Abstract: A silver halide photographic material having provided on a support, at least one red sensitive emulsion layer comprising a silver halide emulsion having a silver chloride content of from 90 to 100 mol % and spectrally sensitized by a red sensitizing dye having a reduction potential at a value of -1.27 (V vs SCE) or more negative and a nitrogen-containing heterocyclic compound, exhibits reduced fluctuation in photographic sensitivity depending on the change in the printing temperature and reduced fluctuation in photographic sensitivity due to long term storage under the normal condition.

Abstract: The present invention provides a photographic emulsion comprising silver halide grains, a dopant, and a grain surface modifier. The dopant is a transition metal selected from Group VIII of the periodic table. The grain surface modifier is characterized in that it comprises a transition metal complex having nitrosyl or thionitrosyl ligands with a transition metal selected from Groups V to X of the periodic table.

Abstract: A process of preparing a radiation sensitive high chloride high aspect ratio tabular grain emulsion is disclosed wherein silver ion is introduced into a high methionine gelatino-peptizer dispersing medium having a methionine content of greater than 30 .mu.moles/gram gelatin, containing a stoichiometric excess of chloride ions of greater than 0.5 molar, a pH of at least 4.5, and a 4,6-di(hydroamino)-5-aminopyrimidine grain growth modifier, such as adenine or 4,5,6 triaminopyrimidine.

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: Novel tabular grain emulsions and a process for their preparation are disclosed in which silver bromoiodide tabular grains account for greater than 97 percent of total grain projected area and the coefficient of variation of the total grain population is less than 25 percent. This is achieved by forming in a first reaction vessel and transporting to a second reaction vessel a population of silver bromide grain nuclei in the form of regular octahedra having an equivalent circular diameter of less than 40 nanometers and a coefficient of variation of less than 50 percent and in the second reaction vessel converting the grain nuclei into a grain population containing parallel twin planes in more than 90 percent of the grains, so that upon further growth silver bromoiodide tabular grains of desired properties can be realized.

Abstract: A silver halide color photographic light-sensitive material, comprising at least one silver halide light-sensitive emulsion layer provided on a support wherein at least one of said light-sensitive emulsion layer contains (i) at least one 5-pyrazolone coupler having an elimination group represented by the following general formula (I) at the coupling position thereof and (ii) at least one monodisperse cubic silver halide emulsion containing at least one metal ion selected from the group consisting of ions of metals of Group VIII of the Periodic Table, transition metals of Group II of the Periodic Table, lead and thallium in an amount of from 1.times.10.sup.-9 to 1.times.10.sup.

Abstract: The present invention is directed to a process of precipitating, for use in photography, a high aspect ratio silver halide tabular grain emulsion employing a dispersing medium and silver chlorobromide or silver chlorobromoiodide grains, wherein at least 50 percent of the tabular silver halide grains have a centrally located hole.

Abstract: A method and an apparatus for controlling reactant ion concentration within a precipitation vessel to optimize the reactions occurring therein is disclosed. In one important implementation, the reactant controlled comprises halide ion in a reactor during the precipitation and growth of silver halide grains. In this embodiment, the method includes measuring the amount of halide ion within the precipitation vessel; measuring the flow rates of the halide feed stream and the silver feed stream; storing the measured halide ion concentration and measured feed stream flow rates; computing an estimated smoothed halide ion concentration value as a function of the stored measured halide ion concentration and measured feed stream flow rates; and adjustably controlling the amount of halide ion added to the precipitation vessel as a function of this estimated halide ion concentration value.

Abstract: The invention provides an improved method of forming monodispersed tabular silver halide grains. These and other objects of the invention are generally performed by providing a method of forming silver halide grains comprising forming an initial population of small twin plane silver halide grains in an aqueous medium, and allowing ripening at a temperature greater than or equal to the temperature of forming said initial population, and then growing the ripened grains. This process is carried out, such that during between about 10 percent and about 100 percent of growth, the temperature of said aqueous medium is at least 2.degree. C. below the ripening temperature, but above the temperature of renucleation, and the pBr is between about 1.0 and 3.5 during growth.

Abstract: Disclosed is a silver halide photographic material, comprising a support having thereon (i) a silver halide emulsion layer which contains negative-working internal latent image-forming silver halide grains which have been chemically sensitized to a depth of less than 0.02 micrometer from the surface of the grain, and (ii) palladium in an amount from 1.times.10.sup.-9 to 1.times.10.sup.-2 mol per mol of coated silver halide.

Abstract: The present invention relates to a process of preparing a photosensitive silver halide emulsion. In this process, an emulsion comprising an acid substituted organic ripening agent and a dispersing medium is prepared. Silver halide grains are then permitted to grow in the emulsion at a pH of from about 2 to about 4.6 to accelerate the growth of the silver halide grains. Subsequently, the pH of the emulsion is adjusted to a value of about 5.3 to about 7 to repress grain growth, to prevent interference with dye sensitization, and to limit fog formation, particularly during storage of the coated emulsion.

Abstract: A photosensitive silver halide emulsion is prepared by providing an emulsion containing an anionic acid-substituted and a neutral organic ripening agent and then growing silver halide grains in the emulsion. This combination of organic ripening agents of differing charge types produces a superadditive effect on the growth of silver halide crystals.

Abstract: Photosensitive silver halide emulsions are prepared by providing an emulsion containing an anionic acid-substituted organic ripening agent and a salt of an element in Group IIA of the Periodic Table and then growing silver halide grains in the emulsion. This combination of an acid-substituted organic ripener and a salt of a Group IIA element produces a superadditive effect on the growth of silver halide crystals.

Abstract: A silver halide photographic material composed of a support having thereon at least one silver halide emulsion layer containing substantially normal silver halide grains having a (111) plane and a (100) plane and capable of preferentially forming a latent image on the (100) plane; the (111) plane occupying at least about 40% of the surface of the grains or the (100) plane occupying more than about 60% of the surface of the grains; provided that when the (111) plane occupies at least about 40% of the surface of the grains, the grains are spectrally sensitized with (a) at least one spectral sensitizing dye selectively adsorbed more on the (100) plane than on the (111) plane, or (b) at least one spectral sensitizing dye selectively adsorbed more on the (111) plane than on the (100) plane.

Abstract: The present invention is directed to hollow rod-shaped silver halide grains for use in photography and a process for preparation of hollow, rod-shaped grains. The rods have a hexagonal outer periphery, and a hexagonal hollow portion extending longitudinally within the grains.

Abstract: In a silver halide photographic light-sensitive material having at least one silver halide emulsion layer on a support, light-sensitive silver halide grains contained in the silver halide emulsion layer have been subjected to selenium sensitization, and the silver halide emulsion layer or another hydrophilic colloid layer which is in a water-permeable relationship with the silver halide emulsion layer contains at least one compound represented by formula (I) (wherein Z represents a heterocyclic ring directly or indirectly having at least one substituent group selected from the group consisting of --SO.sub.3 M, --COOR.sub.1, --OH, and --NHR.sub.2, M represents hydrogen, alkali metal, quaternary ammonium, or quaternary phosphonium, R.sub.1 represents hydrogen, alkali metal, or alkyl having 1 to 6 carbon atoms, R.sub.2 represents hydrogen, alkyl having 1 to 6 carbon atoms, --COR.sub.3, --COOR.sub.3, or --SO.sub.2 R.sub.3, and R.sub.

Abstract: Room light handleable direct reversal silver bromide emulsions, with up to 70 mole percent chloride, have a broad Dmin window when from 1.times.10.sup.-6 to 1.times.10.sup.-4 mole per silver mole of a polybromo coordination complex of iridium is incorporated in the silver halide grains. The emulsions are stabilized against deterioration on keeping with mercapto compounds.

Abstract: The present invention relates to a process of preparing radiation sensitive silver halide grains containing at least 90 mole % silver iodide and having a morphological configuration of four hexagonal bipyramids each with bases joined to form a common tetrahedron. With this process, the hexagonal bipyramid portion of the grains can be elongated and/or truncated. In addition, the fraction of silver halide grains which have a configuration of four hexagonal bipyramids is increased.

Abstract: A silver halide photographic light-sensitive material is disclosed which comprises a support and, provided thereon, a silver halide emulsion layer comprising silver halide grains having a surface phase and an internal phase adjacent to said surface phase. The internal phase has a thickness of 100 .ANG., and the silver iodide content of the surface phase is higher than that of the internal phase.

Abstract: This invention describes the use of a selenium sensitizer on a large grain size silver chloride emulsion. The process of the invention provides a large and unexpected speed increase on silver chloride emulsion crystals greater than about 0.4 micron in edge length. A photosensitive emulsion according to the invention is particularly useful as a yellow layer in a color print film.

Abstract: A silver halide photographic material low in fogging generation and high in sensitivity comprising a silver halide emulsion selenium sensitized with at least one compound selected from the group consisting of compounds represented by general formulae (I) and (III): ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group, an acyl group, a carboxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group or a sulfamoyl group, provided that a tetramethylselenourea is excluded; ##STR2## wherein each of R.sub.8, R.sub.9, R.sub.10 and R.sub.

Abstract: A silver halide photographic emulsion containing tabular silver halide grains which have an aspect ratio of 2 or more and in which dislocations are localized in a center portion of each grain. The tabular silver halide grains have a thickness of less than 0.5 .mu.m and a diameter of 0.3 .mu.m or more and account for at least 50% of a total projected area of the silver halide grains. This emulsion has a high sensitivity and good reciprocity characteristics. In a photographic light-sensitive material having at least two light-sensitive silver halide emulsion layers having different color sensitivities on a support, the above tabular silver halide photographic emulsion and at least one type of a coupler which is coupled with an oxidant of a color developing agent to develop a color are added to at least one of the emulsion layers, thereby obtaining a photographic light-sensitive material having a high sensitivity and good reciprocity characteristics.

Abstract: There is disclosed a silver, halide photographic light-sensitive material having a high sensitivity and gradation as well as a low fog while exhibiting an excellent aging stability. The light-sensitive material has at least one silver halide emulsion layer on a support, wherein the emulsion is spectrally sensitized at a pH of 5.3 to 6.0 by adding at least one of an oxacarbocyanine dye represented by the following formula (I) to the emulsion before the addition of a chemical sensitizer and thereafter chemically sensitized by adding a chemical sensitizer. A compound represented by the following formula (II) is present in the emulsion layer or a layer adjacent thereto: ##STR1## wherein the substituents are as defined in the specifications.

Abstract: A silver halide photographic emulsion is disclosed, comprising silver halide grains containing a first silver halide phase containing at least 3 mol % of silver iodide and having a completely uniform silver iodide distribution, and a second silver halide phase having at least 5 dislocation lines.