Abstract: A photothermographic material contains a support having thereon an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer on a side of the support where the image forming layer is provided, The photosensitive silver halide contains silver iodide in an amount of from 40 to 100% by mole, and a binder contained in the outermost layer contains at least one of a latex polymer and a water soluble polymer that is not derived from an animal protein in an amount of 50% by mass or more.

Abstract: A photothermographic material having, on at least an image forming layer including at least an organic silver salt and a non-photosensitive layer on the image forming layer, wherein the photothermographic material further has a non-photosensitive intermediate layer between the image forming layer and the non-photosensitive layer, and 50% by weight or more of a binder of the non-photosensitive intermediate layer is formed by a polymer latex, and the photothermographic material contains a metal phthalocyanine dye represented by formula (PC-1): wherein, M represents a metal atom, at least one of R1, R4, R5, R8, R9, R12, R13, and R16 is an electron-attracting group, and R2, R3, R6, R7, R10, R11, R14, and R15 each independently represent a hydrogen atom or a substituent. The invention provides a photothermographic material which exhibits high sharpness, preferable image tone, and excellent image storability.

Abstract: A silver halide emulsion containing a compound represented by the following formula (1) or (2): wherein R1 represents an OH group, an SH group, or an —NR2R3 group in which R2 and R3 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an alkylsulfonyl group, or an arylsulfonyl group; L represents an alkenylene group, an arylene group, an —N?N— group, a divalent aromatic heterocyclic group, or a —C(R4)?N— group in which R4 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; n represents 0 or 1; X and Y each independently represent a nitrogen atom or a —CR5— group in which R5 represents a hydrogen atom or a substituent bondable to the carbon atom; Z represents an atomic group in the 5- to 7-membered ring; and M represents a hydrogen atom, a metal ion, or a quaternary ammonium ion.

Abstract: The present invention provides a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic solvent salt, a reducing agent for a silver ion, and a binder on one face of a support, for being applied by using an organic solvent, the photothermographic material further comprising at least one compound selected from the group of compounds consisting of: a compound represented by the following general formula (1), a compound having a ?-lactam ring, a compound having a group that is adsorptive to a silver halide and a group that reduces a silver halide and a precursor thereof:

Abstract: The invention relates to a photothermographic material, comprising a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on a same surface of a support, wherein the non-photosensitive organic silver salt is the non-photosensitive organic silver salt in a dispersion that has been subjected to an annealing treatment at 30° C. or more.

Abstract: The invention provides a photothermographic material having, on both sides of a support, an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, which is to be exposed with X-rays using a fluorescent intensifying screen, wherein (1) a coating amount of the photosensitive silver halide per one side is from 0.01 g/m2 to 0.45 g/m2 in terms of silver amount; and (2) a crossover (%) is 30% or more, or when parallel light having the same wavelength as a main emission peak wavelength of the fluorescent intensifying screen is incident perpendicular to the surface of the photothermographic material, the parallel light component of transmitted light comprises 5% or more of the incident light. A photothermographic material for medical use having high sensitivity and high image quality is provided.

Abstract: A photothermographic material comprising a support and an image-forming layer, a non-photosensitive intermediate layer A, and an outermost layer provided in this order on at least one side of the support, wherein the image-forming layer comprises a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and at least 50 mass % of a binder in the non-photosensitive intermediate layer A is a polymer latex having a film water absorption of 5 % or lower.

Abstract: The present invention provides a photothermographic material having an image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, on one surface of a support, and having at least one back layer and a back surface protective layer, on the other surface of the support, wherein a binder of the back surface protective layer contains a water-soluble polymer and a latex polymer having a glass transition temperature of ?30° C. to 40° C.; and an image forming method using the same. The photothermographic material and the image forming method of the invention provide excellent coating property and excellent transportability during thermal development in a thermal developing apparatus.

Abstract: An azo compound or a tautomer thereof, wherein the azo compound is represented by the following Formula (1). In Formula (1), R1 represents a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, arylsulfonyl group, or heterocyclic group; R2 represents —NR5R6 or —OR7; R5 and R6 each independently represent a hydrogen atom, alkyl group, aryl group, acyl group, carbamoyl group, alkylsulfonyl group, or arylsulfonyl group; R7 represents an alkyl group or aryl group; R3 represents a hydrogen atom, alkyl group, aryl group, alkoxy group, aryloxy group, acylamino group, carbamoylamino group, alkylsulfonylamino group, or arylsulfonylamino group; n is an integer of 3 to 5; and each R4, of which there are n in number, independently represents an alkyl group, aryl group, alkoxy group, aryloxy group, amino group, alkylthio group, arylthio group, acylamino group, alkylsulfonylamino group, or arylsulfonylamino group, and one R4 may bind to another R4 forming a ring.

Abstract: A photothermographic material including, on one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and, on the other side of the support, a non-photosensitive back side layer. The total quantity of an alkaline earth metal contained in the non-photosensitive back side layer is 1×10?5 mol/m2 to 1×10?3 mol/m2.

Abstract: An image forming method for forming an image by exposing a photothermographic material to a laser beam, the laser beam being a laser diode beam having a peak light-emission intensity at a wavelength of 350 nm to 450 nm. The photothermographic material comprises at least a non-photosensitive silver salt, a photosensitive silver halide, a binder and a reducing agent, wherein a silver iodide content of the photosensitive silver halide is 40% by mole or more.

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: Provided are a photothermographic material which includes, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and is X-ray exposed with a fluorescent intensifying screen, wherein (1) the photosensitive silver halide includes tabular grains having a mean aspect ratio of 2 to 100 and a mean equivalent spherical diameter of 0.3 ?m to 10 ?m, (2) an exposure value necessary for obtaining an image density of fog+0.

Abstract: A photothermographic material comprising a support, and an image-forming layer and a non-image-forming layer provided on the support, wherein the image-forming layer comprises a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder; the non-image-forming layer includes a slipping agent having a melting point of 80° C. to 120° C.; the coefficient (K1) of dynamic friction measured at a velocity of 0.1 cm/sec and the coefficient (K2) of dynamic friction measured at a velocity of 10 cm/sec have a relation represented by formula (1): Formula (1) 1.20>K1/K2>0.90. Also provided is an image-forming method using the photothermographic material.

Abstract: A photothermographic material having an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder, and a non-photosensitive layer on at least one side of a support, in which the binder is a hydrophilic binder, the non-photosensitive layer contains gelatin or a gelatin derivative, the reducing agent is a compound represented by the following formula (R), and at least one compound represented by the following formula (I) or (II) is contained: (wherein in formula (R), R11 and R11? each independently represent an alkyl group and at least one of R11 and R11? is a secondary or tertiary alkyl group); (wherein in the formula (I), Q represents an atomic group necessary for forming a 5 or 6-membered imide ring); and (wherein in the formula (II), R5 independently represents a hydrogen atom or a substituent, r represents 0, 1, 2, 3 or 4, and X represents O, S, Se or N(R6)).

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: The present invention provides a photothermographic material including a support having disposed thereon an image-forming layer that contains at least a non-photosensitive organic silver salt, a photosensitive silver halide, a reducing agent and a binder, and further including a compound represented by the following formula (I): A-(W)n-P??(I) wherein A represents an atomic group having at least two mercapto groups as the substituent; W represents a divalent linking group; n represents 0 or 1; and P represents a pyrazolidone group.

Abstract: A photothermographic material comprising a support, and an image-forming layer and a non-photosensitive layer provided on a surface of the support, wherein the image-forming layer and the non-photosensitive layer are adjacent to each other; the image-forming layer includes a photosensitive silver halide, a first non-photosensitive organic silver salt, a first reducing agent, a polyhalogen compound and a binder; and the non-photosensitive layer includes a second non-photosensitive organic silver salt.

Abstract: The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, and a binder, as well as an image forming method. The black and white photothermographic material is characterized in that 1) the non-photosensitive organic silver salt includes at least one compound selected from the group consisting of a silver salt of an azole compound and a silver salt of a mercapto compound, and 2) the photosensitive silver halide has a spectral sensitizing dye in the form of a multilayer adsorbed on its surface. According to the invention, an improved black and white photothermographic material and image forming method realizing high sensitivity, favorable gradation, and less dependence on developing process conditions are provided.

Abstract: A photothermographic material of the present invention contains a slipping agent. One slipping agent is a liquid at a ordinary temperature, and an volatile rate of the slipping agent at 120° C. for one hour is 0.5% by mass or less as measured by a thermo-balance. The other slipping agent is that a permeating rate to the transportation rollers, when the transportation rollers are immersed in the slipping agent at 120° C. for 2 hours, is 6% by mass or less.