Abstract: A photothermographic material comprising: a transparent support; and a photosensitive layer comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a thermal developer and a binder, wherein the photosensitive silver halide comprises silver iodide in a ratio of 5% by mole or more, the non-photosensitive organic silver salt comprises silver behenate in a ratio of 30% by mole or more and less than 80% by mole, and the binder has a glass transition temperature of 45° C. or more.

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: An image forming method using a photothermographic material a photosensitive silver halide, a reducing agent, a binder and a non-photosensitive organic silver salt, wherein: the photothermographic material is discharged from a thermal developing device within 35 seconds after heating for thermal development is ceased.

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 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: An image forming method using a photothermographic material comprising, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photothermographic material: 1) having a gamma value of 2.0 to 4.0 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 2) having a silver salt of fatty acid at an application amount of 5 mmol/m2 to 18 mmol/m2 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 3) is discharged from a thermal development device within 35 seconds after heating for thermal development is ceased.

Abstract: Disclosed are photothermographic materials having, on a support, a layer that contains at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, in which the mean silver iodide content of the photosensitive silver halide falls between 5 and 100 mol %, preferably between 40 and 100 mol %.

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.

Abstract: A photothermographic material comprising: a transparent support; and a photosensitive layer comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a thermal developer and a binder, wherein the photosensitive silver halide comprises silver iodide in a ratio of 5% by mole or more, the non-photosensitive organic silver salt comprises silver behenate in a ratio of 30% by mole or more and less than 80% by mole, and the binder has a glass transition temperature of 45° C. or more.

Abstract: For achieving both advantages of high activity in heat development and superior image storability, the present invention provides a photothermographic material comprising a support having provided on one surface side thereof an image-forming layer comprising at least one kind of photosensitive silver halide, a photo-insensitive organic silver salt, a reducing agent for a silver ion and a binder having a glass transition temperature of 20° C.

Abstract: A silver halide photographic material is disclosed which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing silver halide grains, a surface protective layer as an uppermost layer, and a hydrophilic colloid layer other than said at least one light-sensitive silver halide emulsion layer and said surface protective layer, wherein the sum of the silver amount contained in each of said at least one light-sensitive silver halide emulsion layer is from 0.8 g/m.sup.2 to 1.5 g/m.sup.

Abstract: A silver halide photographic light-sensitive material suitable for super rapid processing in not more than 60 seconds is disclosed, which comprises a transparent support having coated thereon gelatin in a total coating amount of 1.7-2.5 g/m.sup.2 per one side of the support and a photosensitive layer containing photosensitive silver halide grains, the silver halide grains being silver iodobromide having a silver iodide content of not more than 0.6 mol%.

Abstract: A photographic light-sensitive material for medical use or nondestructive testing use is described, comprising (1) a support having thereon at least one light-sensitive silver halide emulsion layer, and (2) a polymer located on the same side of the support as an emulsion layer and capable of providing a cation site in a fixing solution.

Abstract: A method for producing a silver halide photographic emulsion comprising silver iodobromide or iodobromochloride grains having an average iodine content of less than 1.0 mol %, which comprises the following step (a) or (b) to form a surface portion of the grains such that the step provides the surface portion having an iodine content of 0.005 mol % to less than 0.3 mol % based on the total amount of silver in the grains:(a) adding simultaneously a silver nitrate solution and a solution which contains iodine ion; or(b) adding fine particles of AgI and/or fine particles of AgBrI.The emulsion thus produced is suitable for photosensitive materials which are subjected to ultra-rapid automatic development processing.

Abstract: A method for processing a silver halide photographic material is described, comprising the steps of:(a) developing a silver halide photographic material comprising a support having thereon at least one hydrophilic colloidal layer, including at least one light-sensitive emulsion layer containing tabular silver halide grains having an aspect ratio of at least about 4, the total number of hydrophilic colloidal layers having a degree of swelling of about 250% or less; and(b) after developing a predetermined amount of said silver halide photographic material, adding a single replenisher of the developer comprising a 3-pyrazolidone developing agent represented by formula (I): ##STR1## wherein R.sub.o represents a substituted or unsubstituted aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: A chemically sensitized silver halide photographic emulsion comprising silver halide grains, at least 70% of the projected surface area of all the silver halide grains being constituted by tabular grains having an aspect ration of at least 3, wherein at least 0.5 millimoles of a sensitizing dye and 0.5 to 5.0 millimoles of at least one silver halide adsorbing substance other than a sensitizing dye per mole of the silver halide are introduced in the emulsion preparation stage and are present during chemical sensization of the silver halide.

Abstract: A process for treating a tabular silver halide emulsion is disclosed comprising the steps of subjecting the tabular silver halide emulsion to reduction sensitization and to sulfur sensitization or selenium sensitization and/or gold sensitization in the presence of a nitrogen-containing heterocyclic compound which forms a complex with silver during the manufacture of the tabular silver halide emulsion, said tabular emulsion having a grain size distribution such that grains having an average aspect ratio of not lower than 3.0 constitute at least 50% of the total projected area of all of the silver halide grains. There is also disclosed a silver halide X-ray photographic material comprising a support having thereon at least one silver halide emulsion layer containing a tabular silver halide emulsion prepared in accordance with the above process.

Abstract: The present invention provides (1) a method for preparation of a photographic silver halide emulsion containing tabular silver halide particles having a particle diameter larger than the particle thickness by three times or more, wherein least one oxidizing agent selected from a hydrogen peroxide, a salt of a peroxy acid and an ozone is added to the emulsion before the termination of chemical ripening thereof and then a reducing agent is added thereto, and (2) a silver halide photographic material which has at least one or more layers comprising a tabular silver halide particle-containing emulsion wherein tabular silver halide particles are those prepared by method (1). The present tabular silver halide particle-containing emulsion has high sensitivity and good granularity and is substantially free from fog.

Abstract: A photographic silver halide emulsion comprising silver chlorobromide grains containing at least 80 mol % silver chloride or silver chloride grains is disclosed, wherein tabular grains having a thickness of less than 0.5 .mu.m, a diameter of at least 0.5 .mu.m and an aspect ratio of at least 2/1 account for at least 50% of the total projected area of the silver halide grains, and the tabular grains are formed in the presence of a compound of metal belonging to Group VIII of the Periodic Table. The high silver chloride content emulsion has a sensitivity as high as that of a silver iodobromide emulsion.

Abstract: A silver halide photographic material which comprises a support having thereon at least one silver halide emulsion layer, wherein silver halide grains to be contained in the silver halide emulsion layer have a silver iodide content lower than 1 mol %, and the silver halide emulsion contains 3.0.times.10.sup.-3 to 2.times.10.sup.-2 mol of a thiocyanate per mol of silver halide. In addition, a photographic silver halide emulsion comprising silver halide grains wherein said silver halide grains have an average silver iodide content lower than 1 mol %, and deposited on the surface of the silver halide grains is at least 2.times.10.sup.-3 mol, but less than 2.times.10.sup.2 mol of a thiocyanate per mol of silver halide.