Abstract: The object of the present invention is to obtain a double-side ink jet recording sheet at least one side of which has gloss surface and in which scratches caused by rubbing of sheets hardly occur. According to the present invention, there is obtained a double-side ink jet recording sheet comprising a support provided with at least one ink-receiving layer on each of both sides, wherein at least one side has a gloss surface having a 75° specular glossiness of not less than 40% and the ink-receiving layer on the side opposite to the side having gloss surface contains organic particles having an average particle diameter of 2–40 ?m. The outermost layer of the side having the gloss surface is preferably formed by subjecting to pressure-contact specular finishing by cast-coating method.

Abstract: The present invention discloses an ink-jet recording material having a support and at least two ink-receptive layers containing inorganic fine particles and a hydrophilic binder, which comprises an ink-receptive layer A nearer to the support containing precipitated silica fine particles having an average secondary particle diameter 500 nm or less, or precipitated silica fine particles having an average secondary particle diameter 500 nm or less and fumed silica fine particles having an average secondary particle diameter 500 nm or less, and containing less than 20 parts by weight of a polyvinyl alcohol based on 100 parts by weight of the whole silica fine particles in the ink-receptive layer A, and an ink-receptive layer B farther from the support containing at least one kind of fine particles selected from fumed silica, alumina and alumina hydrate and less than 25 parts by weight of a polyvinyl alcohol based on 100 parts by weight of the fine particles.

Abstract: There is disclosed a process for preparing a negative type light-sensitive lithographic printing plate having an aluminum plate as a support and a light-sensitive layer, provided on the support, containing a polymer, an ethylenically unsaturated compound, a photopolymerization initiator and a sensitizer having an absorption at a wavelength region of from visible light to infrared rays, which comprises subjecting the aluminum support after anodization treatment to a treatment in a solution containing potassium silicate and having a molar ratio of SiO2/M2O where M represents an alkali metal being in the range of 0.3 to 3.5.

Abstract: The present invention provides a transfer paper for electrophotography which can be printed by electrophotographic printers, facsimile, copiers and on-demand printers, has excellent toner fixability and is excellent in gloss of printed images, and can produce images close to those formed on photographic papers in gloss of white paper and gloss of printed image portions. The present invention relates to a transfer paper for electrophotography comprising a base paper and at least one coating layer provided thereon, characterized in that the uppermost coating layer contains not less than 5 parts by mass of an organic hollow pigment in 100 parts by mass of pigment.

Abstract: Disclosed are an ink-jet recording material for proof including a water-resistant support and at least one ink-receptive layer containing inorganic fine particles and a hydrophilic binder provided on the support, wherein the water-resistant support has a center line average roughness Ra75 with a cut off value of 0.8 mm according to JIS-B0601 of 1.0 ?m or less, and an uppermost ink-receptive layer farthest from the water-resistant support contains a colorless or white matting agent having an average particle size of 1 to 10 ?m and a colored pigment having an average particle size of 1 ?m or less, and use of the same for proof.

Abstract: The object of the present invention is to provide an ink jet recording paper of so-called plain paper type having no coating of pigment on the recording surface which is excellent in image density and color reproducibility of the recorded image and besides has a water resistance of the printed portion. According to the present invention, there is provided an ink jet recording paper which comprises a neutral base paper comprising a wood pulp as a main starting material on which is coated a coating solution containing a fluorescent brightening agent, a water-soluble binder and a cationic polymer fixing agent and in which the coated paper has an ISO whiteness of not less than 95% and a fluorescence intensity of 7–15% measured by a method specified in JIS P-8148 using a xenon flash lamp as a light source.

Abstract: There are disclosed a packaged product for an ink-jet recording material which has a protective sheet for protecting the surface of the outermost ink-receptive layer of the ink-jet recording material, wherein a protective paper sheet is used as the protective sheet in which a difference between the pH of its surface which makes contact with the surface of the outermost ink-receptive layer and the pH of the surface of the ink-receptive layer is 1.5 or smaller, and a recording method and a recorded material using the ink-jet recording material.

Abstract: The present invention provide a separator for an electrochemical device which comprises a wet nonwoven fabric comprising one or more kinds of fibrillated organic fibers which are at least partially fibrillated into a fiber diameter of 1 ?m or less, and one or more kinds of unfibrillated organic fibers having a fineness of 0.5 dtex or less, which exhibits excellent heat resistance, electrolyte holding properties, internal short-circuit preventing property, and winding property, which results in a lowered internal resistance and prolonged life of an electrochemical device, and a method for producing the same and an electrochemical device.

Abstract: According to the present invention, in an ink-jet recording material in which at least two ink-receptive layers containing inorganic fine particles and a hydrophilic binder are provided on a support, an ink-jet recording material wherein an ink-receptive layer (A) nearer to the support contains fumed silica, and an ink-receptive layer (B) apart from the support contains alumina or alumina hydrate is provided.

Abstract: When latent heat is transferred between the two airflows flowing along the respective sides of each partition member, not only a layer of moisture absorbent but also a layer of flame retardant lies in the direction of transfer of the moisture. Thus, even if the moisture is absorbed by the layer of moisture absorbent, the layer of flame retardant resists the moisture transfer so that the amount of transfer of the moisture decreases in that part with a drop in the moisture permeability of the partition member. To solve the problem, there is provided a total heat exchanging element comprising partition members and spacing members having moisture permeable portions provided with moisture permeability and flame resisting portions provided with flame retardancy, the both portions not overlapping with each other within each single member.

Abstract: There is disclosed a method of processing a light-sensitive material which comprises exposing a light-sensitive material having at least one light-sensitive layer on a support, and subjecting to development by a dipping system or a coating system, and then, peeling at least the light-sensitive layer off by bringing a peeling material into close contact with the light-sensitive material, wherein the peeling material is a material having a liquid-absorbing rate in which a liquid-absorption amount within 0.1 second after getting in contact with a liquid is 60% or more based on a liquid-absorption amount within 0.2 second after the same.

Abstract: There are disclosed a light-sensitive composition which comprises (A) at least one water-soluble polymer selected from a cationic water-soluble polymer having a phenyl group substituted by a vinyl group at a side chain of the polymer and a water-soluble polymer having a phenyl group substituted by a vinyl group and a sulfonate group at a side chain of the polymer, and (B) at least one of a photopolymerization initiator and a photo-acid generator; and a light-sensitive composition which comprises at least one cationic monomer having two or more polymerizable unsaturated groups in the molecule, at least one polymer, and at least one of a photopolymerizable initiator and a photo-acid generator.

Abstract: The object of the present invention is to provide an ink jet recording sheet which can give an image having an appearance looking like a picture, especially, an oil painting with maintaining sufficient print density. According to the present invention, there is provided an ink jet recording sheet comprising a support and an ink receiving layer provided on one side of the support, where the support is a fabric and the surface of the ink receiving layer has an arithmetical mean roughness of not more than 30 ?m measured in accordance with JIS B0601. The present invention further provides an ink jet recording sheet mentioned above, wherein the ink receiving layer is coated on a pigment layer coated on at least one side of the fabric or on at least one side of the fabric impregnated with a pigment component. The ink receiving layer preferably contains a gas phase method silica.

Abstract: The object of the present invention is to provide a heating regeneration type organic rotor member which comprises a honeycomb structural body capable of being continuously regenerated by heating upon rotational driving and remarkably improved in mechanical strength by using a fiber substrate essentially composed of organic fibers and which can efficiently adsorb and remove moisture and odor components in the air by the action of moisture adsorbent and active carbon carried on the fiber substrate, and to provide a method for producing the same. According to the present invention, there is provided a heating regeneration type organic rotor member which is produced by forming a functional substrate into a honeycomb structural body, the functional substrate comprising a fiber substrate containing organic fibers as an essential component and carrying thereon a moisture adsorbent and an active carbon.

Abstract: There are disclosed an ink-jet recording material comprising a support, and an ink-receptive layer provided on the support, wherein the ink-jet recording material contains at least one compound selected from a carbohydrazide compound in which at least one nitrogen atom at 1-position and 5-position is substituted by two substituents other than a hydrogen atom and a compound having a 4-oxysemicarbazide structure, and ink for ink-jet recording comprising at least one of the above-mentioned compound.

Abstract: A reversible thermal recording material permits recording having a clear contrast at a high sensitivity and erasing such images a number of times, at least 1,000 times, repetitively, and comprises a leuco dye, a reversible developer and a light-heat-converting dye, the light-heat-converting dye having a deterioration ratio of 20% or less when a laser beam having an oscillation wavelength of 830 nm is applied thereto repeatedly 1000 times at a temperature of 25° C. at an energy of 2 J/cm2 or being a phthalocyanine compound having a vanadyl group, and a method of recording an image comprises applying a laser beam to the reversible thermal recording material, wherein the colored leuco dye is achromatized with energy that is 25 to 65% of the energy of the laser beam employed for causing the leuco dye to develop a color.

Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances. The present invention provides an organic photoconductive material comprising a compound having a specific structure and an electrophotographic photoreceptor having a photosensitive layer containing the above photoconductive material.

Abstract: Disclosed is an ink-jet printing sheet which comprises a support and at least one ink-receptive layer provided on the support, wherein at least one of the ink-receptive layer contains silica fine particles having an average primary particle diameter of 20 nm or less and at least one water-soluble polyvalent metal compound.

Abstract: There are disclosed a light-sensitive composition which comprises a polymer comprising a carboxyl group and a polymerizable double bond at the side chain, an organic-borate salt, and a hindered amine compound or a protonic acid captor; and a lithographic printing plate which comprises an aluminum plate and a light-sensitive layer comprising the above light-sensitive composition.

Abstract: The object of the present invention is to provide an ink jet recording medium which is high in gloss and ink absorption and excellent in image colorfulness and adhesion of the coats and a method for producing the same. According to the present invention, there is provided an ink jet recording medium which comprises a support, an undercoat layer containing a salt of an alkaline earth metal and an adhesive provided on the support and an ink-receiving layer provided by coating a coating solution containing inorganic ultrafine particles on the undercoat layer. The undercoat layer preferably contains the adhesive in an amount of 0.05-0.8 time the amount of the salt of alkaline earth metal in weight ratio. Furthermore, the undercoat layer preferably contains an organic pigment. The alkaline earth metal is preferably calcium or magnesium, and more preferably the salt of the alkaline earth metal is a carbonate.