Abstract: The present disclosure provides synthetic collagen and methods of making and using synthetic collagen that include a synthetic collagen that facilitates wound closure comprising an isolated and purified triple helical backbone protein that facilitates wound closure comprising one or more alteration in a triple helical backbone protein sequence, that stabilize the isolated and purified triple helical backbone protein and does not disrupt an additional collagen ligand interaction; and one or more integrin binding motifs, wherein the isolated and purified triple helical backbone protein facilitates wound closure.

Abstract: In this device, the nozzles that often used in order to make a linear motion, so they can be helpful in rotating the disc if they are placed at the external ring of disc. In addition, in this case, apart from generating electricity from the discharging fluid of the nozzle by ionization method, the kinetic energy of the discharging fluid can be used for rotating the disc as well.

Abstract: A method for forming and immobilizing small particles on a filter substrate using a first and second polymer solution, a solution of sodium bromide and a solution of a metal salt. The method adjusts the pH of at least one of the first and second polymer solutions, immersing the filter substrate in the first polymer solution and immersing the filter substrate in the second polymer solution. The method includes repeating the steps of immersing the filter substrate in the first solution and the second solution alternately until desired number of layers is achieved. The method allows for the filter substrate to be immersed in the solution of the metal salt and subsequently in the solution of sodium bromide.

Abstract: A silver halide color photosensitive material for being subjected to a color development within nine seconds of being imagewise exposed, and comprising a support and a photograph constitution layer provided on the support, the photograph constitution layer containing at least one layer that comprises a yellow dye-forming coupler, at least one layer that comprises a magenta dye-forming coupler, at least one layer that comprises a cyan dye-forming coupler, and at least one non-photosensitive hydrophilic colloid layer. The coupler-comprising layers respectively include silver halide emulsions, and at least one of the silver halide emulsions has the characteristics of: (i) a silver chloride content of 90 mol % or more; and (ii) containing at least one specific metal complexes. The color development is preferably completed within 28 seconds.

Abstract: A silver halide photographic emulsion comprising grains is characterized that 70% or more of the total projected area of the grains are occupied by tabular grains meeting requirements (i) to (v) below: (i) silver bromochloroiodide grains having (111) faces as major surfaces, (ii) hexagonal grains having a ratio of the length of an edge having the maximum length to the length of an edge having the minimum length of not more than 2, (iii) perfect epitaxial grains having a total of six epitaxial junctions each existing only in each of six apex portions of the hexagonal grains, (iv) the silver chloride content is 1 to 6 mol %, and (v) the silver iodide content is 0.5 to 10 mol %.

Abstract: A method for separating photosensitive silver halide particles by precipitation from a dispersion comprising the silver halide particles and a protective colloid of a natural polymer, the method comprising the step of mixing the dispersion with an organic polymer having a logarithm value of n-octanol/water partition coefficient (being a log P value) of 0.8 to 2.0 so as to separate the silver halide particles from the dispersion.

Abstract: A silver halide photographic emulsion comprising silver halide grains, wherein a variation coefficient of equivalent-circle diameters of all the silver halide grains is 30% or less, and 70% or more of the total projected area of the silver halide grains are occupied by silver halide grains each meeting requirements (i), (ii), and (iii) below: (i) silver bromochloroiodide grain having (111) faces as main planes, (ii) having an epitaxial portion junctioned to at least one apex portion thereof, and (iii) having at least one dislocation line in an epitaxial portion thereof.

Abstract: The present invention provides a silver halide emulsion containing silver halide particles, wherein a content of silver chloride in the silver halide particles is at least 89 mol %, and wherein the silver halide particles comprising at least one of (i) at least one phase selected from the group consisting of a laminar phase containing silver bromide, a laminar phase comprising silver iodide and a phase comprising silver bromide and having a maximum point where a silver bromide content ratio is at a maximum value, which maximum point is inside the silver particles, and (ii) a phase comprising silver iodide and a phase comprising silver bromide, which phase comprising silver bromide is disposed further inside of the silver halide particles than the phase comprising silver iodide. Further, the present invention provides a silver halide photosensitive material comprising the silver halide emulsion.

Abstract: A silver halide emulsion containing silver halide grains with a silver chloride content of at least 95 mole %, being sensitized with selenium and gold, and further containing at least two compounds each having a function of oxidizing metallic silver clusters; a silver halide photographic material containing the same; and a silver halide photographic material having red-, green, and blue-sensitive silver halide emulsion layers, wherein one of the emulsion layers contains a silver halide emulsion with a silver chloride content of at least 95 mole %, and the silver halide emulsion contains a selenium compound and a metal complex of formula (D1); [MD1XD1nLD1(6-n)]m ??formula (D1) wherein MD1 represents Cr, Mo, Re, Fe, Ru, Os, Co, Rh, Pd, or Pt; XD1 represents a halogen ion; LD1 represents a ligand other than XD1; n represents 3, 4, 5, or 6; and m represents 4?, 3?, 2?, 1?, 0, or 1+.

Abstract: A silver halide-holographic sensitive material is provided and has a support and at least one photosensitive emulsion layer, with the photosensitive emulsion layer containing silver halide particles whose number average projected-area diameter is from 10 nm to 80 nm.

Abstract: A silver halide color photographic light-sensitive material having a silver halide emulsion layer, and (1) a substantially light-insensitive dye-forming-coupler-containing layer, and (2) at least one layer selected from a non-color-forming intermediate layer containing a color-mixing inhibitor and a non-color-forming intermediate layer substantially free of color-mixing inhibitor, wherein i) when the light-insensitive dye-forming-coupler-containing layer is included, the layer is positioned adjacent to the silver halide emulsion layer, and ii) when the non-color-forming intermediate layer containing a color-mixing inhibitor and the non-color-forming intermediate layer substantially free of color-mixing inhibitor are included, these layers are positioned adjacent to each other.

Abstract: To provide a silver halide color photographic light-sensitive material having higher sensitivity and higher contrast and free of reciprocity failure over a wide range of exposure illuminance, A silver halide emulsion comprising a silver halide grain containing at least two metal complexes each giving an average electron releasing time of 10?5 to 3 seconds, the ratio in the average electron releasing time between these two metal complexes being at least 3 times or more and in these metal complexes, the content of the metal complex having a shorter average electron releasing time being 3 times or more as the molar ratio to the content of the metal complex having a longer average electron releasing time.

Abstract: At least one of a nucleus forming process, a nucleus growing process, a chemical sensitizing process, and a spectral sensitizing process for producing a silver halide photographic emulsion is performed by using a microreactor. A minute region of the microreactor is used to precisely perform a reaction of nucleus formation. A condition under which host grains are allowed to react with newly supplied silver halide nuclei is made uniform to cause uniform crystal growth. A predetermined quantity of molecules for chemical sensitization is doped in a crystal lattice of a nucleus of silver halide to effect a sensitizing process. Alternatively, a spectral sensitizing process in which a single molecular layer of a spectral sensitizer is uniformly adsorbed on a silver halide nucleus grain surface is securely carried out.

Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.

Abstract: The invention provides a photothermographic material containing a tabular photosensitive silver halide having an average silver iodide content of 40 mol % or higher, 50% or more of a total projected area of the photosensitive silver halide being occupied by tabular grains having an aspect ratio of 2 or more, the photosensitive silver halide grains having a mean equivalent spherical diameter of from 0.2 ?m to 5 ?m and a variation coefficient of an equivalent spherical diameter distribution of 30% or less. Further, a method for preparing the photosensitive silver halide used in the photothermographic material is characterized in that grains are formed in the presence of at least one selected from a silver halide solvent and an amino group-modified gelatin. A high-sensitivity photothermographic material exhibiting a low fog and a high optical density is provided.

Abstract: The invention provides a black and white photothermographic material including, on at least one surface of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein 50% or more of the total projected area of the photosensitive silver halide grains is occupied by tabular grains having an aspect ratio of 2 or more, and at least one apex portion of each tabular grain has an epitaxial junction. An image forming method is also provided, the method including bringing the photothermographic material into close contact with a fluorescent intensifying screen containing a fluorescent substance, wherein 50% or more of emission light of the fluorescent substance has a wavelength of 350 nm to 420 nm, and applying X-ray exposure. The black and white photothermographic material has high sensitivity and is superior in image storability and raw stock storability.

Abstract: A silver halide emulsion comprises at least a dispersion medium, water and a silver halide grain, wherein grains occupying from 40 to 100% of the total projected area of said gains have an AgI content of 85 to 100 mol %, a single kind of outer shape except for size and the equivalent-circle projected diameter of from 0.002 to 20 ?m.

Abstract: A photothermographic emulsion is prepared by chemically sensitizing silver halide grains by oxidative decomposition of an organic sulfur-containing compound on or around the silver halide grains. This procedure uses a unique sequence of steps and provides increased photographic speed and manufacturing reproducibility. The resulting photothermographic emulsion can be used to prepare photothermographic materials.

Abstract: A process for the preparation of a radiation-sensitive silver halide emulsion comprised of high bromide cubical silver halide grains, the process comprising: (a) providing in a stirred reaction vessel a dispersing medium and high bromide silver halide grain cores, the grain cores comprising at least 5 mole % of the final emulsion silver and the contents of the vessel being maintained at a temperature of at least about 65° C., and (b) precipitating a high bromide silver halide shell which comprises at least 5 mole % of the final emulsion silver onto the grain cores by introducing at least a silver salt solution into the dispersing medium at a specified high rate, wherein a minor percentage of chloride ions, relative to bromide, is introduced into the reaction vessel prior to or concurrent with precipitation of the high bromide shell, and wherein the concentration of silver halide grains in the reaction vessel at the end of the precipitation of the shell is at least 0.5 mole/L.

Abstract: A silver halide emulsion comprises at least a dispersion medium, water and a silver halide grain, wherein grains occupying from 40 to 100% of the total projected area of said gains have an AgI content of 85 to 100 mol %, a single kind of outer shape except for size and the equivalent-circle projected diameter of from 0.002 to 20 ?m.

Abstract: A lightsensitive material package contains a silver halide color photographic lightsensitive material and a plastic material member. The photographic lightsensitive material has at least one red-sensitive, at least one green-sensitive and at least one blue-sensitive silver halide emulsion layer on a support. The plastic material member is constituted of a thermoplastic reclaimed resin. The photographic lightsensitive material and the plastic material member are arranged in a common gas-phase atmosphere and sealed in the package. 60% or more of the total projected area of silver halide grains contained in at least one of the red-, green- and blue-sensitive silver halide emulsion layers is occupied by tabular grains having an aspect ratio of 8.0 or more. The plastic material member is that produced from a resin to which a substance capable of adsorbing a substance having an adverse effect on a photographic property has been supplementally added prior to molding thereof.

Abstract: The present invention provides a photosensitive silver halide photographic emulsion comprising a silver iodide content of 41 mol % or more and 100 mol % or less and including a silver halide to which reduction sensitization is applied in the course of particle formation, and silver halide photographic emulsion comprising 41 mol % to 100 mol % of silver iodide and subjected to at least one of chalcogen sensitization and gold sensitization to the insides of particles.

Abstract: A silver halide photographic light-sensitive material is disclosed, comprising at least one silver halide emulsion characterized in that 50% or more of the projected area of all silver halide grains comprises tabular silver halide grains satisfying all of the following requirements (i) to (iii) and the coefficient of variation in the thickness of the tabular silver halide grains is less than 40%: (i) to have a grain thickness of less than 0.05 ?m and an equivalent-circle diameter of 0.6 ?m or more; (ii) to be silver iodobromide or silver chloroiodobromide having a silver bromide content of 70 mol % or more; (iii) to be a tabular silver halide grain having two parallel main planes comprising a (111) face.

Abstract: A silver halide photographic emulsion is disclosed, comprising silver chloroiodide grains or silver chloroiodobromide grains, having 90 mol % or more of a silver chloride content, wherein the silver chloroiodide grains or silver chloroiodobromide grains have a layer having a silver iodide content of decreasing in the depth direction from the grain surface.

Abstract: A silver halide photographic emulsion comprising grains, wherein not less than 50% of the number of all the grains are occupied by silver iodebromide or silver bromochloroiodide tabular grains each meeting the requirements (i) to (iii) below: (i) a thickness is less than 0.13 ?m; (ii) an equivalent-circle diameter is not less than 1.0 ?m; and (iii) a silver iodide content in a fringe internal region A between a twin plane and a grain major surface is higher than a silver iodide content in a fringe internal region B between two twin planes.

Abstract: A silver halide photographic emulsion comprising epitaxial junction type tabular grains. The epitaxial junction type tabular grains each satisfying the following requirements (i) to (iv) occupy 100 to 50% (grain numerical ratio) of all the grains contained in the silver halide photographic emulsion: (i) host tabular grain is a tabular grain of silver iodobromide or silver iodochlorobromide having {111} faces as main planes and two parallel twin planes; (ii) at least one silver halide epitaxial portion is formed, per grain, only on a corner portion of the host tabular grain; (iii) a portion of an external surface of the silver halide epitaxial portion has a face parallel to the main plane of the host tabular grain; and (iv) a portion of an external surface of the silver halide epitaxial portion has a {100} face.

Abstract: This invention relates to a negative silver halide photographic element comprising a support and a silver halide imaging layer containing a light sensitive silver halide imaging emulsion, said silver halide imaging layer further comprising a separately precipitated non-imaging intentionally fogged fine grain emulsion and an electron transfer agent releasing compound represented by formula (I): CAR1-(L)n-ETA??(I) wherein: CAR1 is a carrier moiety which is capable of releasing -(L)n-ETA on reaction with oxidized developing agent; L is a divalent linking group, n is 0, 1 or 2; and ETA is a releasable electron transfer agent, and (optionally) a development accelerator releasing compound represented by the formula (II): CAR2—(SAM)-NX1—NX2X3??(II) wherein: CAR2 is a carrier moiety which is capable of releasing —(SAM)-NX1—NX2X3 on reaction with oxidized developing agent; SAM is a silver absorbable moiety attached to the carrier moiety and is released on reaction with oxidized development agent; and —NX1—NX2X

Abstract: A process of producing a silver halide photographic emulsion containing tabular silver halide grains having an aspect ratio of 5 or more, which comprises using silver halide fine grains as prepared by the following method in at least one of a nucleation step and a growth step of the production of silver halide emulsion, the method comprising mixing at least a silver salt aqueous solution and a halide aqueous solution to prepare silver halide fine grains, wherein one of the silver salt aqueous solution and the halide aqueous solution is introduced as a jet flow into a mixer; a region where the jet flow slows down is provided within the mixer; and the other solution is introduced into the jet flow before the velocity of the jet flow has become {fraction (1/10)} of the velocity at the time when the jet flow comes into the slowing-down region.

Abstract: A silver halide photographic emulsion which contains silver halide grains having light absorption strength of 100 or more.

Abstract: A silver halide photographic emulsion comprising grains, wherein 50% or more (numerical ratio) of all the grains are occupied by tabular grains with epitaxial junction meeting the requirements (i) to (v): (i) silver iodochlorobromide grains having (111) faces as main planes and having two parallel twin planes, (ii) an equivalent circle diameter of 3.0 ?m or more and an aspect ratio of 8 or more, (iii) each of host tabular grains has six silver halide epitaxial junction portions selectively in apex portions thereof, (iv) at least one of the silver halide epitaxial junction portions has at least one dislocation line, and (v) a spacing between the two parallel twin planes of 0.012 ?m or less.

Abstract: The mixing state of static mixing is optimized, so that it is possible to form silver halide emulsion particles in small sizes with an excellent mono-dispersion characteristic. An aqueous solution of haloid salt is blown out from a first nozzle into a mixing chamber as a rectilinear flow of turbulent flow, and before eddy viscosity formed when the rectilinear flow is blown out from the first nozzle of a small diameter to the mixing chamber of a greater diameter reaches a maximum, or before a maximum flow speed of the rectilinear flow is reduced to {fraction (1/10)} or below, an aqueous solution of silver nitrate is blown out from a second nozzle as a crossflow of turbulent flow which crosses the rectilinear flow at a substantially right angle and is entrained by the rectilinear flow, so that the two solutions are allowed to mix and react with each other instantaneously, and a liquid resulting from the mixing and reaction is discharged from a discharge duct.

Abstract: The invention provides a silver halide emulsion, comprising: silver halide grains containing silver chloride as a primary component and further containing silver bromide; wherein, when an average value of a silver bromide content of the silver halide grains is represented by Y (mol %), a silver bromide content of at least 68% of the silver halide grains is from 0.82×Y (mol %) to 1.18×Y (mol %). Further, the invention provides a method of producing the silver halide emulsion, comprising the step of reacting at least a silver ion, a chlorine ion and a bromine ion; wherein a growth speed at a time of forming a silver bromine-containing phase in the reaction process is at least 60% of a critical growth speed.

Abstract: A disclosed exposure device performs controlling exposing dose by gradations of {n×(m−1)+1} stages representing shadow to highlight for each color when exposing the maximum n times under a condition that every light-emitting element is exposure-gradation controlled independently at m-stages. When a silver halide photosensitive material is used as a photosensitive material, light sensitivity is high in the order of red, green and blue. The number of aligned rows of red light-emitting elements is greater than those of aligned rows of other colors for reducing the light-emitting intensity on a time-average basis for every red light-emitting element. The area of red light-emitting elements and the area of green and blue light-emitting elements are simultaneously and independently passive-matrix driven by corresponding driving circuits. Of each light-emitting element, the driving duty improves and the peak light-emitting intensity reduces.

Abstract: A method of preparing a dye solution having a high concentration and high stability, wherein a counter ion-free dye and a base having a pKa value of from 6.6 to 9.0 are dissolved in a solvent having a relative dielectric constant of at least 10 at 20° C., and a silver halide emulsion and a silver halide photographic material which are reduced in fogging by the use of the dye solution prepared in accordance with the aforesaid method.

Abstract: The present invention relates to a light-sensitive emulsion, and a light-sensitive photographic material containing the same, comprising silver bromoiodide grains of a core shell structure comprising: a) an inner core consisting essentially of silver bromide or silver bromoiodide and having a silver iodide content within the range of 0 to 10 mole %, and b) a plurality of shells consisting essentially of silver bromide or silver bromoiodide, wherein said silver bromoiodide grains exhibit an average grain size lower than 0.60 micrometer, an average grain thickness lower than 0.15 micrometer, and an average aspect ratio lower than 5:1.

Abstract: A silver halide emulsion comprising silver halide grains containing at least 90 mol % chloride, 0.02 to 5.0 mol % bromide and 0 to 2.

Abstract: A silver halide emulsion is disclosed, comprising silver halide grains which each have a host tabular grain part and a part grown on the outside thereof, wherein in said host tabular grains parts, at least 50% of total projected area of the silver halide grains are accounted for by silver halide tabular grains having {111} main surfaces, and said silver halide grains comprises the main surface of the host tabular grain part subjected to junction with high-iodide epitaxial phases comprising silver halide containing at least 97 mole % of silver iodide and the lateral face of the host tabular grain part comprises silver halide having an iodide content of substantially 5 mole % or below; and a method of preparing a silver halide photographic emulsion is disclosed, comprising silver halide grains which each have a host tabular grain part and a part grown on the outside thereof.

Abstract: Silver halide emulsions are disclosed comprising tabular silver halide grains containing dislocation lines in the peripheral region of the major faces; the tabular grains comprising a high iodide phase which is internal to and along the dislocation lines and an internal region which is surrounded by the high iodide phase and comprised of substantially homogeneous silver halide phase and having an average iodide content of not more than 1 mol %. Silver halide photographic materials by the use of the emulsion are also disclosed.

Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.

Abstract: A silver halide emulsion comprising tabular grains having a very small thickness with the main surfaces thereof having a very large surface area and being (111) face, is disclosed. More specifically, a silver halide emulsion is disclosed, comprising light-sensitive silver halide grains having a silver bromide content of 70 mol % or more, with 60 % or more of the entire projected area of said silver halide grains being occupied by tabular grains having an average grain thickness of less than 0.04 &mgr;m, an average equivalent-circle diameter of 4 &mgr;m or more, and (111) face as main surfaces.

Abstract: A silver halide emulsion comprising silver halide grains containing at least 90 mol % chloride, 0.02 to 5.0 mol % bromide and 0 to 2.0 mol % iodide, which is prepared by a process comprising (i) forming a silver halide grain emulsion, (ii) subjecting the silver halide emulsion to desalting and (iii) subjecting the desalted silver halide emulsion to chemical sensitization by adding a chemical sensitizer, wherein in the step (iii), at least one compound represented by the following formula (1) to (4) is added before adding a chemical sensitizer and at least one compound represented by the following formula (1) to (4) is further added after adding a chemical sensitizer.

Abstract: A process for the preparation of a radiation-sensitive silver halide emulsion comprised of high bromide cubical silver halide grains is described, the process comprising: (a) providing in a stirred reaction vessel a dispersing medium and high bromide silver halide seed grains, the seed grains comprising at least 5 mole % of the final emulsion silver, and (b) precipitating a silver halide shell which comprises at least 5 mole % of the final emulsion silver onto the seed grains by introducing at least a silver salt solution into the dispersing medium at a rate such that the normalized shell molar addition rate, Rs, is above 1.

Abstract: A process for incorporating dopants in a silver halide emulsion is described comprising precipitating silver halide emulsion grains in a reaction vessel, wherein at least one gallium dopant, at least one Group 8 metal dopant, and at least one selenium dopant are introduced into the reaction vessel during precipitation of the silver halide grains; where the gallium dopant is introduced in the form of a gallium halide coordination complex of the formula (I): [RxNHy]3GaX6 wherein R represents a lower alkyl group of from 1-3 carbon atoms; X is Cl, Br, or I; and x is from 1-3, y is from 1-3, and x+y=4; and the Group 8 metal dopant satisfies the formula (II): [ML6]n wherein n is −2, −3 or −4; M is a Fe+2, Ru+2, or Os+2 ion; and L6 represents bridging ligands which can be independently selected, provided that at least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a c

Abstract: A process for producing a photosensitive silver halide emulsion is disclosed, comprising silver halide grains and a dispersion medium, said process comprising steps of adding a water-soluble silver solution, an aqueous alkali halide solution and an aqueous solution of gelatin having a molecular weight of 5,000 to 30,000 or less to a mixing vessel different from a reactor for the production of emulsion to prepare silver halide fine grains, adding the silver halide fine grains to the reactor for the production of emulsion to grow silver halide grains, and ultrafiltering the silver halide grains during the addition of silver halide fine grains, wherein 50% or more of the entire projected area of said emulsion grains is occupied by silver halide tabular grains having an aspect ratio of 10 or more and a thickness of 0.15 &mgr;m or less.

Abstract: A method for forming a radiation-sensitive high chloride silver halide emulsion is described comprising growing cubical silver halide grains having a central portion accounting for up to 98 percent of total silver of the grains which central portion contains an iridium coordination complex dopant, and chemically sensitizing the surface of the emulsion grains at a pH of at least 5.75. Localized addition of the known in the art reciprocity-controlling iridium dopants to an internal portion of the emulsion grains and chemical finishing of such an emulsion at elevated pH conditions improves reciprocity and latent image stability of the formed high chloride emulsions.

Abstract: 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.

Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.

Abstract: A silver halide photographic emulsion comprises silver iodochlorobromide tabular grains each having (111) faces as main planes thereof. 70% or more of the total projected area of all the grains contained in the emulsion is occupied by grains each meeting conditions (i) to (iv): (i) a hexagonal tabular grain whose ratio of the length of an edge having the maximum length with respect to the length of an edge having the minimum length, is 2 or less; (ii) an epitaxial junction portion having a silver chloride content of 5 mol % or more and 25 mol % or less, is provided on at least one apex portion of the hexagon; (iii) a silver chloride content thereof is 0.5 mol % or more and 6 mol % or less; and (iv) a silver iodide content thereof is 0.5 mol % or more and 10 mol % or less.

Abstract: The invention relates to a method of forming a silver halide emulsion comprising forming a silver chloride emulsion, adding spectral sensitizing dye, sulfur, and gold sulfide to said emulsion, heating said emulsion to chemically and spectrally sensitize said emulsion, and cooling said emulsion.

Abstract: The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.