Abstract: A radiation detector includes a sensor panel having a light receiving surface, a first scintillator panel and a second scintillator panel disposed on the light receiving surface in a state of being adjacent to each other along the light receiving surface, and an adhesive layer. The first scintillator panel has a first substrate and a first scintillator layer including a plurality of columnar crystals. The second scintillator panel has a second substrate and a second scintillator layer including a plurality of columnar crystals. The first scintillator layer reaches at least a first portion of the first substrate. The second scintillator layer reaches at least a second portion of the second substrate. The adhesive layer is provided continuous over the first scintillator panel and the second scintillator panel.

Abstract: A scintillator panel includes a substrate made of an organic material, a barrier layer formed on the substrate and including thallium iodide as a main component, and a scintillator layer formed on the barrier layer and including cesium iodide as a main component. According to this scintillator panel, moisture resistance can be improved by providing the barrier layer between the substrate and the scintillator layer.

Abstract: A scintillator panel includes: a first flexible support body having a first surface and a second surface on a side opposite to the first surface; a scintillator layer formed on the first surface and containing a plurality of columnar crystals; a second flexible support body provided on the second surface; an inorganic layer provided on the second flexible support body so as to be interposed between the second surface and the second flexible support body; and a first adhesive layer bonding the second surface and the inorganic layer to each other. A radiation detector includes: the scintillator panel; and a sensor panel including a photoelectric conversion element, in which the scintillator panel is provided on the sensor panel such that the first surface is on the sensor panel side with respect to the second surface.

Abstract: A radiation detector includes: a sensor panel; a scintillator panel; and a resin frame provided across the sensor panel and the scintillator panel, in which the sensor panel has a mounting surface where the scintillator panel is mounted, the scintillator panel includes a support body having a first surface, a second surface on a side opposite to the first surface, and a first side surface connecting the first surface and the second surface to each other, and a scintillator layer formed on the first surface and containing a plurality of columnar crystals, the scintillator panel is mounted on the mounting surface such that the scintillator layer and the first surface face the mounting surface, and the scintillator layer has a second side surface extending so as to be positioned on the same plane as the first side surface.

Abstract: Provided is a liquid developer containing a carrier liquid with an SP value of not more than 8.20, a toner particle that is insoluble in the carrier liquid, and a toner particle dispersing agent, wherein the toner particle contains a polyester resin with an acid value of from 5 mg KOH/g to 50 mg KOH/g, a number-average molecular weight of the polyester resin is from 3,500 to 20,000, the toner particle dispersing agent is a polymer having a primary amino group, an amine value of the polymer having the primary amino group is from 30 mg KOH/g to 200 mg KOH/g, and a ratio of a total number of acid groups in the polyester resin relative to a total number of amino groups in the polymer having the primary amino group is from 1.0 to 10.0.

Abstract: External additive particles including a polymer containing a sulfur atom and a nitrogen atom, wherein the polymer includes a vinyl polymer moiety and a siloxane moiety, relative to a total number of carbon atoms, oxygen atoms, and silicon atoms constituting the external additive particles, a ratio of a number of the silicon atoms constituting the external additive particles is 4.0% or more and 25.0% or less, and in surfaces of the external additive particles analyzed by X-ray photoelectron spectroscopy, relative to a total number of carbon atoms, nitrogen atoms, oxygen atoms, silicon atoms, and sulfur atoms, a ratio of a number of the nitrogen atoms is 0.40% or more and 2.50% or less, and a ratio of a number of the sulfur atoms is 0.05% or more and 0.25% or less.

Abstract: An external additive particle includes a sulfur-containing polymer. The polymer includes a vinyl polymer moiety and a siloxane moiety. The proportion of the number of silicon atoms to the sum of the number of carbon atoms, the number of oxygen atoms, and the number of silicon atoms in the external additive particle is 4.0% or more and 25.0% or less, and sulfur atoms are contained in the surface of the external additive particle as detected by X-ray photoelectron spectroscopy.

Abstract: Provided is a liquid developer containing a carrier liquid with an SP value of not more than 8.20, a toner particle that is insoluble in the carrier liquid, and a toner particle dispersing agent, wherein the toner particle contains a polyester resin with an acid value of from 5 mg KOH/g to 50 mg KOH/g, a number-average molecular weight of the polyester resin is from 3,500 to 20,000, the toner particle dispersing agent is a polymer having a primary amino group, an amine value of the polymer having the primary amino group is from 30 mg KOH/g to 200 mg KOH/g, and a ratio of a total number of acid groups in the polyester resin relative to a total number of amino groups in the polymer having the primary amino group is from 1.0 to 10.0.

Abstract: A liquid developer comprising a carrier liquid, a toner particle insoluble in the carrier liquid, and a polymer having a primary amino group and soluble in the carrier liquid, wherein the toner particle comprises a polyester resin having an acidic group, an acid value of the polyester resin is at least 5 mg KOH/g, a pKa of the acidic group is not more than 3.4, and the polymer having a primary amino group has a primary amino group at a position other than the end of a main chain of the polymer, and method of producing thereof.

Abstract: A method for producing a liquid developer, the method including a step of producing a toner particle by applying a shear force to a mixture of a polyester resin A and B, and a toner particle dispersing agent in a liquid a, wherein the polyester resin A has a number-average molecular weight from 3,000 to 7,000, an acid value of at least 5, and a carboxy group; the polyester resin B has a number-average molecular weight from 4,000 to 20,000 and an acid value of not more than 2; the toner particle dispersing agent has a primary amino group and an amine value of at least 40; the mass ratio (B/(A+B)) for the polyester resin B is 0.3 to 0.9; and the following relationship is satisfied: SP value of liquid a<SP value of the toner particle dispersing agent<SP value of polyester resin B.

Abstract: Provided is a liquid developer with excellent image quality, fixability and storage stability, containing a toner particle with both good dispersion stability and good surface smoothness, the liquid developer contains an insulating liquid and a toner particle that is insoluble in the insulating liquid, and the toner particle contains a colorant having an acidic group and a binder resin, or a colorant and a binder resin having an acidic group, and a polyamine compound.

Abstract: A method for producing a liquid developer, the method including a step of producing a toner particle by applying a shear force to a mixture of a polyester resin A and B, and a toner particle dispersing agent in a liquid a, wherein the polyester resin A has a number-average molecular weight from 3,000 to 7,000, an acid value of at least 5, and a carboxy group; the polyester resin B has a number-average molecular weight from 4,000 to 20,000 and an acid value of not more than 2; the toner particle dispersing agent has a primary amino group and an amine value of at least 40; the mass ratio (B/(A+B)) for the polyester resin B is 0.3 to 0.9; and the following relationship is satisfied: SP value of liquid a<SP value of the toner particle dispersing agent<SP value of polyester resin B.

Abstract: The liquid developer according to the present invention includes a toner particle containing a polyester resin and a pigment and includes a carrier liquid comprising a nonaqueous solution, the polyester resin contains a monomer unit derived from trimellitic acid, and the content of the monomer unit derived from trimellitic acid in the total acid component-derived monomer unit constituting the polyester resin is from 2.0 mol % to 60.0 mol %, the polyester resin also contains a monomer unit derived from an ethylene oxide adduct on bisphenol A, and the content of the monomer unit derived from the ethylene oxide adduct on bisphenol A in the total alcohol component-derived monomer unit constituting the polyester resin is from 50.0 mol % to 100.0 mol %, and the average circularity of the toner particle is at least 0.950.

Abstract: A liquid developer comprising a carrier liquid, a toner particle insoluble in the carrier liquid, and a polymer having a primary amino group and soluble in the carrier liquid, wherein the toner particle comprises a polyester resin having an acidic group, an acid value of the polyester resin is at least 5 mg KOH/g, a pKa of the acidic group is not more than 3.4, and the polymer having a primary amino group has a primary amino group at a position other than the end of a main chain of the polymer, and method of producing thereof.

Abstract: Provided is a liquid developer that gives a high image density, has a high resistance, suppresses the appearance of image blurring, can be reused, is readily cured by ultraviolet radiation, and can accommodate higher process speeds. This liquid developer contains a carrier liquid, a toner particle insoluble in the carrier liquid, and a compound with the following formula (1) [In formula (1), R1 and R2 each independently represent an alkyl group having at least 13 and not more than 23 carbons.].

Abstract: A curable liquid developer containing: a toner particle containing a pigment and a binder resin; a toner particle dispersing agent; and a cationically polymerizable liquid monomer, wherein the binder resin contains a polyester resin having an acid value of at least 5 mg KOH/g; the polyester resin contains an alcohol component-derived monomer unit and an acid component-derived monomer unit; the alcohol component-derived monomer unit and the acid component-derived monomer unit contain specific monomer units in specific proportions; and the content of the polyester resin in the binder resin is at least 50 mass % and not more than 100 mass %.

Abstract: A curable liquid developer production method that can efficiently produce a curable liquid developer is provided. A curable liquid developer is also provided. The method is a method of producing a curable liquid developer containing a pigment, a binder resin, a toner particle dispersing agent, and a curable insulating liquid, this method including: a pigment dispersion step of preparing a pigment dispersion containing a pigment, a binder resin, a toner particle dispersing agent, and a solvent; a mixing step of mixing the pigment dispersion with a curable insulating liquid; and a distillative removal step of distillatively removing the solvent from a mixture obtained in the mixing step.

Abstract: A method for producing a curable liquid developer including a toner particle including a colorant and a binder resin, a dispersant, and an insulating liquid (a) which does not dissolve the binder resin, the method including a step (1) of preparing a liquid mixture including the colorant, the binder resin, the insulating liquid (a), a solvent (b) which dissolves the binder resin, and the dispersant which is soluble in both the insulating liquid (a) and the solvent (b), and a step (2) of distilling off the solvent (b), wherein the insulating liquid (a) includes a monomer having a polymerizable functional group, and a molar average number of functional groups, a molar average SP value and an average molecular weight of the insulating liquid (a) are in specific range.

Abstract: A curable liquid developer that contains a toner particle, a polymerization initiator, and a cationically polymerizable liquid monomer, wherein the cationically polymerizable liquid monomer contains a compound given by the following formula (A): (R—CH?CH—O—)n—CmH(2m+2?n)??formula (A) [in formula (A), m represents an integer that is at least 12 and not more than 50; n represents an integer that is at least 2; and R represents a hydrogen atom or an alkyl group having at least 1 and not more than 3 carbons].

Abstract: Provided is a UV-curable liquid developer remaining in an apparatus hardly cures with visible light even when the apparatus is opened for the purpose of, for example, its maintenance, and the UV-curable liquid developer shows sufficient fixability by irradiation of the UV light. The UV-curable liquid developer includes: toner particles; a polymerization initiator; a sensitizer; and a polymerizable monomer, in which the sensitizer contains a compound represented by X—Y, where X represents a triphenylenyl group or the like and Y represents a triphenylenyl group or the like.