Abstract: A process for producing a three-dimensional model is provided. The process includes (a) a layer formation step of forming a layer of a powder material having a refractive index n1 above a support, (b) a shape formation step of bonding the powder material layer into a predetermined shape by a binder that gives a refractive index n2, and (c) sequentially repeating the above steps. The absolute value of the difference between the refractive index n1 of the powder material and the refractive index n2 given by the binder is 0.1 or less, and the binder includes two or more types of binders selected from the group consisting of at least one type of colored binder, a white binder, and a colorless transparent binder.

Abstract: An inkjet ink composition is provided that includes a polymerizable compound, a photopolymerization initiator, and a metal powder. There is also provided an image formation method that includes an image recording step of recording an image on a recording material by inkjet recording in which the inkjet ink composition is discharged, and an image curing step of curing the image recorded on the recording material in the image recording step by irradiation with actinic radiation. Furthermore, there is provided a recorded material formed by s using the inkjet ink composition.

Abstract: A process for producing a three-dimensional model is provided. The process includes a step (layer formation step) of forming a layer of a powder material, the layer having a predetermined thickness, a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder according to sliced cross-sectional data of a modeled object so as to give a cross-sectional shape, and sequentially repeating the above steps. The surface gloss of the three-dimensional model obtained when measured at 20° is 20% or more. Furthermore, production equipment used in the above process is provided. Moreover, a three-dimensional model is provided that contains a powder material and a binder and is formed by imagewise curing the binder, the three-dimensional model having a surface gloss when measured at 20° of 20% or more.

Abstract: The present invention relates to a process for producing a three-dimensional model in which a binder has good discharge properties and curability. The process for producing a three-dimensional model is a process for producing a three-dimensional model that includes a step (layer formation step) of forming above a support a layer of a powder material, the layer having a predetermined thickness, a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder according to sliced cross-sectional data of a modeled object so as to give a cross-sectional shape, and sequentially repeating the above steps, the binder having a viscosity at 25° C. of 5 to 100 mPa·s.

Abstract: The present invention relates to a process for producing a three-dimensional model, the process having a high modeling speed and enabling a three-dimensional model having high gloss and transparency to be obtained. The process for producing a three-dimensional model is a process for producing a three-dimensional model that includes a step (layer formation step) of forming above a support a layer containing a powder material, and a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder, (a) the powder material employing a synthetic organic powder, and (b) the binder being cured by actinic radiation.

Abstract: An inkjet ink comprising a plurality of liquids containing a polymerizable compound, a polymerization initiator, a colorant, and two compounds which react with each other to form an aggregate or become viscous when mixed with each other. There is no liquid containing both of the compounds capable of reacting with each other. The compounds capable of reacting with each other may be a compound having an acidic moiety and a compound having a basic moiety. Also provided is an image-forming method using the inkjet ink.

Abstract: A process for producing a three-dimensional model is provided. The process includes (a) a layer formation step of forming a layer of a powder material having a refractive index n1 above a support, (b) a shape formation step of bonding the powder material layer into a predetermined shape by a binder that gives a refractive index n2, and (c) sequentially repeating the above steps. The absolute value of the difference between the refractive index n1 of the powder material and the refractive index n2 given by the binder is 0.1 or less, and the binder includes two or more types of binders selected from the group consisting of at least one type of colored binder, a white binder, and a colorless transparent binder.

Abstract: A process for producing a three-dimensional model is provided. The process includes a step (layer formation step) of forming a layer of a powder material, the layer having a predetermined thickness, a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder according to sliced cross-sectional data of a modeled object so as to give a cross-sectional shape, and sequentially repeating the above steps. The surface gloss of the three-dimensional model obtained when measured at 20° is 20% or more. Furthermore, production equipment used in the above process is provided. Moreover, a three-dimensional model is provided that contains a powder material and a binder and is formed by imagewise curing the binder, the three-dimensional model having a surface gloss when measured at 20° of 20% or more.

Abstract: The present invention provides a high-quality heat-sensitive recording material which can prevent curling attributed to an environmental change or heating during recording, is free of deformation of the material, and is applicable to a wide variety of fields. The heat-sensitive recording material of the present invention has at least a heat-sensitive recording layer on one side of a support and a back coat layer on the other side, wherein the back coat layer comprises a plurality of layers, and the outermost layer in the back coat layer most remote from the support contains an inorganic lamellar compound and/or polyvinyl alcohol. The inorganic lamellar compound is preferably water-swelling synthetic mica.

Abstract: The present invention provides a high-quality heat-sensitive recording material which can prevent curling attributed to an environmental change or heating during recording, is free of deformation of the material, and is applicable to a wide variety of fields. The heat-sensitive recording material of the present invention has at least a heat-sensitive recording layer on one side of a support and a back coat layer on the other side, wherein the back coat layer comprises a plurality of layers, and the outermost layer in the back coat layer most remote from the support contains an inorganic lamellar compound and/or polyvinyl alcohol. The inorganic lamellar compound is preferably water-swelling synthetic mica.

Abstract: A light-sensitive and heat-sensitive recording material containing a diazo compound and a coupling component or a coupler, in which a density of a recorded image and a whiteness of a base portion are both improved. The recording material includes a recording layer disposed on a substrate. The recording layer preferably contains the diazo compound in the form of a diazonium salt and enclosed in micro-capsules together with an acylphosphine oxide compound, wherein the diazonium salt is reactive with the coupler.

Abstract: The present invention provides a recording material comprising a substrate and a recording layer thereon characterized in that the oxygen transmission rate of the substrate, as measured in accordance with Method B of JIS K 7126, is not greater than 50 cc/m.sup.2 /day. If necessary, a protective layer is formed on the recording layer. The substrate is composed of a sheet of base paper and a plastic film layer present at least on the side of the paper which faces a recording layer to be formed. The plastic film layer is appropriately selected from the group consisting of a polyester film, a polyvinylidene chloride film, a polycarbonate film, a polyvinylchloride film and a film of a random copolymer of ethylene and vinylalcohol. The recording material according to the present invention is excellent in the long-term preservation of images, fading resistance and light fastness.

Abstract: A heat-sensitive recording material having excellent light-fastness and raw stock storability is disclosed. The material includes a support and a heat-sensitive recording layer provided on the support, and the heat-sensitive recording layer contains a diazo compound and a coupler. The coupler contains at least one species of pyrazolone compounds represented by the following formula (1): ##STR1## wherein Ar represents a phenyl group, a naphthyl group, or an aromatic heterocyclic group, any one of which may have a substituent bonded to the nucleus, said substituent may be a halogen atom, a cyano group, a trifluoromethyl group, an alkyl group, an aryl group, an alkoxycarbonyl group, a carbamoyl group, or a sulfamoyl group; R.sup.1 and R.sup.2 independently represent an alkyl group, an alkenyl group, or an aryl group, or R.sup.1 and R.sup.2 may be linked to each other so as to form a heterocycle.

Abstract: A method of optically reading colored record images formed by the reaction of a substantially colorless electron donating dye and an electron accepting developer in a pressure-sensitive recording sheet with a red light having a wavelength of from 620 nm to 700 nm, wherein the pressure-sensitive recording sheet comprises an electron accepting developer layer containing a metal salt of an aromatic carboxylic acid as the electron accepting developer and an electron donating dye layer containing a phthalide compound represented by the following formula (1) as the electron donating dye: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; the R.sub.1 and R.sub.2 or the R.sub.3 and R.sub.4 may combine with each other to form a ring; R.sub.5 represents a hydrogen atom or an alkyl group; R6, R.sub.7, R.sub.8, and R.sub.

Abstract: A pressure-sensitive recording sheet comprises a microencapsulated divinylphthalide compound represented by the following formula (I): ##STR1## wherein the microcapsules have the following particle size distribution:4.0 .mu.m.ltoreq.D.sub.50 .ltoreq.10.0 .mu.mD.sub.90 /D.sub.10 .ltoreq.2.0.

Abstract: A recording material containing an electron donating colorless dye capable of undergoing a coloration reaction, wherein a metal salt of a salicylic acid derivative represented by the following formula (I) and a fatty acid derivative having a benzotriazole group as a substituent group or an alcohol derivative having a benzotriazole group as a substituent group are provided on a same support: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent each hydrogen atom, an alkyl group or an aryl group.

Abstract: A method for the manufacture of microcapsules for use in pressure-sensitive recording sheets is disclosed, which comprises after dispersing and emulsifying in a hydrophilic liquid a solution obtained by dissolving (a) a polyisocyanate, (b) an alkyleneoxide adduct of an amine and (c) an electron-donating color former in a hydrophobic liquid, adding a polyamine to the emulsified dispersion and forming microcapsules of poly(urethane urea) around the liquid droplets containing the color former.

Abstract: A recording medium comprising at least one electron donating colorless dye and at least one electron accepting compound, wherein the electron accepting compound is a salicylic acid compound represented by formula (I): ##STR1## wherein R represents a divalent group; X and Y, which may be the same or different, each represents a hydrogen aotm, an alkyl group, an aryl group, an alkoxy group, or a halogen atom; and Z represents a hydrogen atom, a carboxyl group, an alkyl group, an aryl group, an alkoxy group, or a halogen atom, or a metal salt thereof.

Abstract: A recording material comprising a support provided thereon a color developer and microcapsules containing a substantially colorless color former is disclosed, wherein the microcapsules further contains at least one of nickel compounds represented by formulae (I) and (II) shown in the specification. The microcapsules exhibit excellent light-resistance, and a color image developed exhibits excellent light-fastness.

Abstract: A color developer sheet which brings about color development by contact with a substantially colorless electron-donating color former, where said sheet contains an organometallic compound represented by the following general formula (I), (II) or (III) to enhance light resistance and stability of the color product obtained by the color development: ##STR1## wherein M represents a nickel atom, a copper atom, a cobalt atom, or a zinc atom; X.sub.1 and X.sub.2 each represents an oxygen atom, a sulfur atom, or --NR.sub.5 --, in which R.sub.5 represents a hydrogen atom, an alkyl group, an aryl group, or a hydroxyl group; X.sub.3 represents a hydroxyl group, or a mercapto group; Y represents an oxygen atom, a sulfur atom, or --CHR.sub.6, in which R.sub.6 represents a hydrogen atom, an alkyl group, or an aryl group; R.sub.1, R.sub.2, R.sub.3 and R.sub.