Abstract: The present invention aims to provide a recording material support having superior excellent surface smoothness and water resistance compared to the related art, to a process for efficiently manufacturing this recording material support, to a recording material which can form an image having excellent quality and gloss using this recording material support, and to process for image formation using this recording material. For this purpose, the recording material support comprising at least raw paper satisfies at least one condition selected from the Cobb size (30 seconds) of the surface on the side provided with the image-forming layer of the support, Oken type smoothness, Stökigt sizing degree, central square average roughness (SRa) and variation amount (?SRa) of SRa.

Abstract: The object of the present invention is to provide a support for image-recording material that is recordable on both surfaces with less show-through, has an excellent adhesion resistance and texture, and can record high gloss, high quality images. Accordingly, provided is a support for an image-recording material which has a paper and one polymer-coated layer on both surfaces of the paper, wherein polymer-coated layers on both surfaces of the paper comprise titanium dioxide, and each outermost surface of polymer-coated layers on both surfaces of the paper is a roughened surface.

Abstract: A support for an image recording medium includes base paper, a polymer coating layer formed on both top and wire side surfaces, and a coating layer containing a pigment and an adhesive agent which is formed under the polymer coating layer on one or both side surfaces. The support has a water absorbence less than 20 mg in terms of cross section water absorption quantity given by the following expression: Cross section water absorption quantity (mg)=A?B where A is the mass of a 10×1.5 cm support after wiping off attached water after five minute immersion in a water bath at 20° C. and B is the mass of the paper base support before immersion.

Abstract: A support for an image recording medium comprises a base paper, made by press-drying a wet base paper, which has a density preferably in a range of from 0.8 to 1.04 g/m3 and more preferably in a range of from 0.85 to 0.94 g/m3 and a formation index preferably greater than 60 and more preferably greater than 80 (aperture: 1.0 mm), and a cast coating layer formed on at least one surface of the base paper, the cast coating layer being treated by a smoothing device having a smooth surface such as a metal roller having a mirror finished surface.

Abstract: A support for an image recording medium comprises a base paper, made by press-drying a wet base paper, which has a density preferably in a range of from 0.8 to 1.04 g/m3 and more preferably in a range of from 0.85 to 0.94 g/m3 and a formation index preferably greater than 60 and more preferably greater than 80 (aperture: 1.0 mm), and a cast coating layer formed on at least one surface of the base paper, the cast coating layer being treated by a smoothing device having a smooth surface such as a metal roller having a mirror finished surface.

Abstract: The object of the present invention is to provide a paper which has high surface planarity and excellent gloss and a method for manufacturing the paper, and moreover, to provide an image-recording material support and an image-recording material. For this object, the present invention provides a paper which comprises a raw paper and a polymer-containing layer on at least one surface of the raw paper to be formed with an image-recording layer and is prepared by subjecting a press and dry treatment.

Abstract: A support for an image recording paper comprises a support paper and a coating layer formed on one surface thereof on which an image is formed. The coating layer is formed by a film of polypropylene having a density less than 0.88 g/cm3. An image recording paper comprises the support and an image recording layer formed over the coating layer.

Abstract: A base support for an image recording material strikes a balance between high flatness and superb stiffness and is favorably available for various image recording mediums capable of providing high quality. The base support comprising at least base paper satisfying a ratio of subsurface internal bond strength A relative central internal bond strength B that is represented preferably by A/B?0.7, and more preferably by 0.3?A/B?0.7. The subsurface internal bond strength is preferably from 90 to 150 mJ.

Abstract: An image recording material, includes: a support; and an image recording layer disposed on the support, and having a depression-and-protrusion at least on a part of an image face of the image recording material after an image recording. The depression-and-protrusion defines a slope inclined from the image face. The depression-and-protrusion of the image face has a ten point height of roughness profile Rz in a range from 5 ?m to 25 ?m and has an average depression-and-protrusion space Sm defined in JIS B0601-1994 in a range from 100 ?m to 1000 ?m.

Abstract: Paper and an image-recording material support which have high surface planarity and excellent gloss are disclosed. Moreover, an image-recording material is disclosed which uses the image-recording material support and is capable of obtaining high quality image. The paper includes raw paper. The paper satisfies at least one of the following conditions (i) and (ii): (i) the paper has an inner bonding strength of 160 mJ or more specified in Japan Technical Association of the Pulp and Paper Industry No. 54, and an average center surface roughness (SRa) on at least one face of the paper is 0.9 ?m or less at a cutoff wavelength of 0.3 mm to 0.4 mm, and (ii) an Oken type smoothness S (second) on the at least one face of the paper, and a density ? (g/cm3) of the paper satisfy an expression S1/2/?3?15.

Abstract: A support for an image recording material comprises base paper having a formation index at a restriction diameter of 1.0 mm equal to or greater than 80 and density equal to or greater than 0.95 g/m3, changes of said formation index and density of said base paper before and after contact of a front surface of said base paper at a side on which an image recording layer of said imager recording material is formed with water at 20° C. for 30 seconds being equal to or less than 10 and 0.05 g/m3, respectively.

Abstract: An electrophotographic image receiving sheet comprising a support and a toner image receiving layer formed on the support and a process of forming an image on the sheet are disclosed. The support comprises base paper that contains more than 0.5 g/m2 of at least one of an alkali metal salt and an alkaline earth metal salt and a moisture content of 6.5% by weight or more and a polyolefin resin layer formed on each surface of the base paper. The base paper preferably contains the salt in a range of from 0.6 to 3 g/m2 and a moisture content in a range of from 6.5 to 8.5% by weight.

Abstract: An image-receiving sheet for electrophotography is provided, which has an excellent gloss and which can be easily produced. The image-receiving sheet includes a base paper and a toner image-receiving layer comprising a thermoplastic resin on at least one surface of the base paper. The toner image-receiving layer contains less than 40% by mass, based on the thermoplastic resin, of a pigment. The thermoplastic resin is infiltrated to a depth of 0.01% to less than 1% of the thickness of the base paper from the surface of the base paper at the image-receiving layer side.

Abstract: An image-receiving sheet for electrophotography is provided which is capable of forming an image having excellent gloss and image quality, wherein a polypropylene resin layer is formed in direct contact with both surfaces of a base paper and a toner image-receiving layer is formed on the surface of the surface-polypropylene layer. The polypropylene resin forming the polyproylene resin layers has a melt flow rate (MFR) of 18 to 50 and a density of at least 0.890. The image has an excellent gloss and a high quality and free from the blister formation and also from the easy peeling of the toner image-receiving layer even at a high fixing temperature. A polypropylene resin layer is formed on both surfaces of a base paper and the surface tension of the polypropylene resin layer on the toner image-receiving layer side is controlled at 48 dyne/cm or higher.

Abstract: An object is to provide a support for image-recording material excellent in dimension stability and smoothness, a manufacturing process of the support, and an image-recording material which employs such support and which can obtain a high quality image. Accordingly, provided is a support for an image-recording material which comprises at least a sheet of raw paper wherein a pressure drying treatment is performed at a temperature of from 100° C. to 200° C. on the raw paper sheet having a water content of from 30% to 70%, while applying pressure to a surface of the raw paper sheet on which an image-recording layer is to be formed, and a calender treatment is carried out afterwards using at least one calender.

Abstract: The present invention aims to provide an electrophotographic image-receiving sheet which can be more easily and efficiently manufactured and shows excellent image quality and glossiness, to provide a process for manufacturing the electrophotographic image-receiving sheet, and to provide a process for image formation using the electrophotographic image-receiving sheet. An electrophotographic image-receiving sheet which includes a support and a toner image-receiving layer which is to be disposed on at least one surface of the support and contains a thermoplastic resin, in which the electrophotographic image-receiving sheet is formed by soft calender treatment using a metal roller having surface temperature of glass transition temperature (Tg) of the thermoplastic resin minus 30° C. or more and the glass transition temperature plus 50° C. or less, so that the metal roller contacts a surface of the toner image-receiving layer.

Abstract: The present invention aims to provide a recording material support having superior excellent surface smoothness and water resistance compared to the related art, to a process for efficiently manufacturing this recording material support, to a recording material which can form an image having excellent quality and gloss using this recording material support, and to process for image formation using this recording material. For this purpose, the recording material support comprising at least raw paper satisfies at least one condition selected from the Cobb size (30 seconds) of the surface on the side provided with the image-forming layer of the support, Oken type smoothness, Stökigt sizing degree, central square average roughness (SRa) and variation amount (&Dgr;SRa) of SRa.

Abstract: An image-receiving sheet for electrophotography is provided which is capable of forming an image having excellent gloss and image quality, wherein a polypropylene resin layer is formed in direct contact with both surfaces of a base paper and a toner image-receiving layer is formed on the surface of the surface-polypropylene resin layer. The polypropylene resin forming the polypropylene resin layers has a melt flow rate (MFR) of 18 to 50 and a density of at least 0.890.

Abstract: An image-receiving sheet for electrophotography is provided, which has an excellent gloss and which can be easily produced.

Abstract: A photographic printing paper support which comprises a raw paper coated with a film-forming resin on both sides; said raw paper being a paper made from paper stock comprising (i) cationic starch, (ii) polyamidepolyamine epichlorohydrin and (iii) an epoxidized higher fatty acid amide and/or an alkylketene dimer, and optionally (iv) a metal salt of carboxymethyl cellulose and/or an acrylamide/diallylamine salt copolymer, and being adjusted to pH 6.5-8.5 and controlled so as to have a zeta potential in the range of -10 mV to +5 mV.