Patents Assigned to Mitsubishi Paper Mill Limited
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Patent number: 8609210Abstract: The object of the present invention is to provide a coated printing paper used for ink jet printing machines, which has an ink fixing property and ink absorption property corresponding to ink jet printing, which inhibits poor dot diffusion, and which is excellent in abrasion resistance property of printed portions. According to the present invention, provided is a coated printing paper comprising a base paper, an undercoating layer which is applied on at least one surface of the base paper and contains a pigment and a binder, and one or more coating layers on the undercoating layer, wherein the base paper contains at least one selected from a cationic resin and a multivalent cation salt; the uppermost coating layer contains at least a colloidal silica; and the 75° gloss according to JIS Z8741 of the surface of the uppermost coating layer is 40% or more.Type: GrantFiled: July 13, 2010Date of Patent: December 17, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Masanori Nagoshi, Koji Idei, Hiroshi Matsuda, Kazutoshi Iida, Jun Urasaki
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Patent number: 8602550Abstract: A coated printing paper has a favorable offset printability, which can achieve good ink fixing and ink absorption properties even in ink jet printing, which has suitable dot diffusion even when printed by an ink jet printer using pigment ink, and can prevent the occurrence of white lines. The coated printing paper comprises a base paper and a coating layer which is applied to at least one surface of the base paper and contains a pigment and a binder as major components, wherein the base paper comprises a cationic compound, the coating layer contains, as a pigment, 50 parts by mass or more of ground calcium carbonate based on 100 parts by mass of total pigments in the coating layer, and the applied amount of the coating layer is 2.0 g/m2 to 7.0 g/m2, both inclusive, per surface.Type: GrantFiled: June 29, 2010Date of Patent: December 10, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Koji Idei, Hiroo Kaji, Hiroshi Matsuda, Masanori Nagoshi, Kazutoshi Iida, Jun Urasaki
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Patent number: 8598075Abstract: Provided is a thermal recording material comprising a heat-sensitive recording layer for color formation by heat and a protective layer stacked in this order on a support, the heat-sensitive recording layer containing an ethylene-vinyl alcohol copolymer, the protective layer containing a diacetone-modified polyvinyl alcohol and a crosslinker.Type: GrantFiled: December 21, 2009Date of Patent: December 3, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Takahito Ochiai, Takao Masuda
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Patent number: 8546066Abstract: A method for forming a conductor pattern comprising the steps of (a) forming a photo-crosslinkable resin layer on a substrate provided with a conductive layer on its surface, (b) treating the photo-crosslinkable resin layer with an alkali aqueous solution to render it thinner, (c) carrying out exposure for a circuit pattern, (d) developing and (e) etching, the steps included in this order, said alkali aqueous solution being an aqueous solution containing 5 to 20 mass % of an inorganic alkaline compound, or method for forming a conductor pattern comprising the steps of (a?) forming a photo-crosslinkable resin layer on a substrate provide with a conductive layer on its surface and inside a hole thereof, (i) curing the photo-crosslinkable resin layer on the hole alone or on the hole and a surrounding area thereof, (b?) treating the photo-crosslinkable resin layer in an uncured portion with an alkali aqueous solution to render it thinner, (c) carrying out exposure for a circuit pattern, (d) developing and (e) etcType: GrantFiled: January 22, 2009Date of Patent: October 1, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Munetoshi Irisawa, Yuji Toyoda, Yasuo Kaneda, Kunihiro Nakagawa
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Publication number: 20130233529Abstract: The object of the present invention is to provide an excellent total heat exchanging element paper and a total heat exchanging element which are excellent in heat transferability, water vapor permeability and gas barrier properties and cause no mixing of supplied air and discharged air. The present invention provides a total heat exchanging element paper using a paper made using mainly a natural pulp beaten to a Canadian modification freeness of not more than 150 ml, a substantially non-porous total heat exchanging element paper comprising a substantially non-porous cellulosic base which contains a moisture absorbing agent, a non-porous total heat exchanging element paper having a high gas barrier property which has a thickness of not more than 100 ?m and a carbon dioxide permeation constant specified in JIS K7126 of not more than 5.Type: ApplicationFiled: April 23, 2013Publication date: September 12, 2013Applicant: Mitsubishi Paper Mills LimitedInventors: Junji HARADA, Masayuki TSUBAKI, Takehiko AJIMA
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Patent number: 8496233Abstract: Provided is a vaporization filter for humidification including a filter substrate, and an anchor layer containing a film-forming polymer and a hydrophilic layer being provided on the substrate in this order. Further provided is a vaporization filter laminate for humidification which includes the vaporization filters for humidification being laminated each with a distance, and a humidification method using the same.Type: GrantFiled: November 12, 2008Date of Patent: July 30, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Takayuki Nakamura, Hideki Hariguchi
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Publication number: 20130187977Abstract: The present invention provides plain printing paper comprising a paper substrate containing, as main components, cellulose pulp and calcium carbonate as a filler, and an optional cationic resin and a multivalent cation salt attached onto the paper substrate, wherein the total amount of the cationic resin and the multivalent cation salt attached on both surfaces of the paper substrate is 1.0 g/m2 to 5.0 g/m2, both inclusive, and the mass ratio of the cationic resin to the multivalent cation salt is 0:100 to 90:10, both inclusive.Type: ApplicationFiled: September 21, 2011Publication date: July 25, 2013Applicant: MITSUBISHI PAPER MILLS LIMITEDInventors: Koji Idei, Masanori Nagoshi, Kazutoshi Iida, Atsushi Nakamura
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Publication number: 20130176371Abstract: The invention provides coated printing paper comprising base paper and on at least one surface of the base paper, a coating layer containing a pigment and a binder as main components, wherein the base paper contains calcium carbonate, the coating layer contains ground calcium carbonate as a pigment in an amount of 50 parts by mass or more relative to 100 parts by mass of the total of the pigment(s) in the coating layer, the base paper and/or the coating layer contains a calcium compound other than calcium carbonate, and the content of calcium derived from the calcium compound is 3 mmol to 60 mmol, both inclusive, in terms of calcium ions per 1 m2 of the base paper and/or the coating layer.Type: ApplicationFiled: September 21, 2011Publication date: July 11, 2013Applicant: MITSUBISHI PAPER MILLS LIMITEDInventors: Masanori Nagoshi, Kazutoshi Iida, Koji Idei, Toru Kaneko
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Publication number: 20130053240Abstract: Provided is a thermal recording material comprising an intermediate layer and a heat-sensitive recording layer for color formation by heat stacked in this order onto a support, the thermal recording material being characterized in that the intermediate layer contains a bellows-shaped hollow resin and that the roughness of the surface on the color forming side is 1.0 ?m or less as measured by Parker Print Surf. The method for producing such a thermal recording material comprises the steps of: applying a coating liquid containing heat-expandable resin particles to a support, drying the coated support at a temperature lower than the expansion starting temperature of the heat-expandable resin particle, and subjecting the coated support to thermoforming for formation of an intermediate layer; and applying, to the intermediate layer, heat-sensitive recording-related components which contribute to color formation by heat, for formation of a heat-sensitive recording layer.Type: ApplicationFiled: March 28, 2011Publication date: February 28, 2013Applicant: MITSUBISHI PAPER MILLS LIMITEDInventors: Nobuko Takahama, Takao Masuda, Yoshimi Ikezawa, Takahito Ochiai, Shinichiro Matsumoto, Yohei Uesugi
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Patent number: 8383831Abstract: The dye for a dye-sensitized solar cell, which dye is a compound classified into melocyanine dyes and has a structure in which an electron donor unit and an electron acceptor unit are connected with conjugated double bonds, provided by this invention, has excellent photoelectric conversion efficiency and excellent durability, and according to this invention, there can be provided a semiconductor electrode sensitized by the dye and a dye-sensitized solar cell using the semiconductor electrode.Type: GrantFiled: August 5, 2009Date of Patent: February 26, 2013Assignee: Mitsubishi Paper Mills LimitedInventors: Masakazu Takata, Koichi Sumioka, Takaaki Kozai
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Publication number: 20130022927Abstract: Disclosed are a photosensitive composition containing an aqueous dispersion and having excellent storage stability, and a photosensitive lithographic printing plate material using the photosensitive composition and being capable of being developed using water, which is advantageous not only in that the photosensitive lithographic printing plate material exhibits high sensitivity and high image quality as well as excellent storage stability, but also in that even when the printing plate material is repeatedly subjected to developing treatment using water, the generation of sludge derived from the photosensitive composition in the developer repeatedly used is suppressed, achieving excellent developing properties.Type: ApplicationFiled: March 25, 2011Publication date: January 24, 2013Applicant: MITSUBISHI PAPER MILLS LIMITEDInventors: Akira Furukawa, Takahiro Hagihara
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Publication number: 20120329646Abstract: Provided is a thermal recording material comprising a heat-sensitive recording layer for color formation by heat and a protective layer stacked in this order on a support, the protective layer at least containing an acetoacetyl-modified polyvinyl alcohol crosslinked by a glyoxylate and an epichlorohydrin resin.Type: ApplicationFiled: February 23, 2011Publication date: December 27, 2012Applicant: MITSUBISHI PAPER MILLS LIMITEDInventor: Shinichiro Matsumoto
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Patent number: 8288313Abstract: A thermal recording material comprises a support and a thermal recording layer formed thereon, the thermal recording layer containing an electron-donating dye precursor and an electron-receiving developer that causes said dye precursor to develop a color, wherein said thermal recording layer contains vapor-phase synthesis silica, preferably, the vapor-phase synthesis silica has a specific surface area, measured by a BET method, of 50 to 200 m2/g and further is doped with aluminum oxide, and the thermal recording layer further contains the above vapor-phase synthesis silica and a diphenyl sulfones-bridged type compound, and the thermal recording material is excellent in anti-sticking property and image stability.Type: GrantFiled: February 13, 2008Date of Patent: October 16, 2012Assignee: Mitsubishi Paper Mills LimitedInventor: Yoshimi Ikezawa
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Patent number: 8283285Abstract: Disclosed are a scratch color-developable ink comprising an electron-donating colorless or light-color dye precursor, an electron-accepting color developer and a varnish, wherein a solid particle component contained therein has an average particle diameter of 0.3 to 25 ?m, a scratch color-developable ink comprising an electron-donating colorless or light-color dye precursor, an electron-accepting color developer and a varnish, wherein an azaphthalide compound is contained as the electron-donating colorless or light-color dye precursor, and an invisible information printed sheet obtained by printing invisible information on a support with the above scratch color-developable ink.Type: GrantFiled: December 19, 2007Date of Patent: October 9, 2012Assignees: Mitsubishi Paper Mills Limited, Tokyo Printing Ink Mfg. Co., Ltd.Inventors: Hisashi Wakasugi, Fujio Takasaki, Kazuhiro Handa, Masahiro Miyauchi, Haruhiko Ikeda
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Patent number: 8252449Abstract: The present invention discloses a separator for an electrochemical element which comprises wet nonwoven fabric containing fibrillated cellulose, non-fibrillated fiber, and fibrillated heat-resistant fiber having all of a softening point, a melting point and a thermal decomposition temperature of 250° C. or higher and 700° C. or lower, and dimensional change rates of MD and CD subjected the wet nonwoven fabric to heat treatment at 250° C. for 50 hours of each ?3% to +1%.Type: GrantFiled: April 15, 2005Date of Patent: August 28, 2012Assignee: Mitsubishi Paper Mills LimitedInventors: Takahiro Tsukuda, Masatoshi Midorikawa
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Patent number: 8202406Abstract: A porous sheet which has good balance between electrolytic solution permeability and dry-up resistance, is superior in high-rate property, and is suitable for a separator for an electrochemical element, and a manufacturing method thereof are provided. The present invention relates to a porous sheet comprising a porous substrate containing non-fibrillar fibers having an average fiber diameter of 0.01-10 ?m and a net-like structural body composed of a polymer, the net-like structural body having penetrating pores with a pore diameter of 0.01-10 ?m, wherein the net-like structural body is present at the surface and at the internal of the porous substrate and the non-fibrillar fibers having an average fiber diameter of 0.01-10 ?m and the net-like structural body are entangled; to a separator for an electrochemical element comprising the porous sheet; and to a method for manufacturing the porous sheet.Type: GrantFiled: June 13, 2008Date of Patent: June 19, 2012Assignee: Mitsubishi Paper Mills LimitedInventors: Takahiro Tsukuda, Masatoshi Midorikawa, Tomohiro Sato
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Patent number: 8183175Abstract: In a thermal recording material having an intermediate layer and a thermal recording layer that are laminated on a support in this order, the above intermediate layer contains a swellable starch and a pigment and is formed by applying onto the support a coating liquid containing the swellable starch and the pigment in the state of being dispersed in a dispersing medium composed of water as a main component, whereby a number of voids are formed in the intermediate layer and there can be provided a thermal recording material excellent in thermal response and head-matching property.Type: GrantFiled: September 18, 2007Date of Patent: May 22, 2012Assignee: Mitsubishi Paper Mills LimitedInventor: Takao Masuda
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Patent number: 8143533Abstract: There are provided a method for forming a resist pattern for preparing a circuit board having a landless or small-land-width through-hole(s) to realize a high-density circuit board, a method for producing a circuit board, and a circuit board. A method for forming a resist pattern, comprising the steps of forming a resin layer and a mask layer on a first surface of a substrate having a through-hole(s), and removing the resin layer on the through-hole(s) and on a periphery of the through-hole(s) on the first surface by supplying a resin layer removing solution from a second surface opposite to the first surface of the substrate, and a method for producing a circuit board using the method for forming a resist pattern, and a circuit board.Type: GrantFiled: May 17, 2006Date of Patent: March 27, 2012Assignees: Mitsubishi Paper Mills Limited, Shinko Electric Industries Co., Ltd.Inventors: Yasuo Kaneda, Munetoshi Irisawa, Yuji Toyoda, Toyokazu Komuro, Katsuya Fukase, Toyoaki Sakai
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Patent number: 8142842Abstract: The present invention relates to a ink-jet recording method for printing with a glycol ink which contains 60 parts by weight or more of glycol ether based on 100 parts by weight of the ink, comprising printing by ejecting the glycol ink on an ink-jet recording material, wherein the ink-jet recording material comprises a support, at least one porous ink-receptive layer which contains inorganic fine particles having an average secondary particle size of 500 nm or less and a resin binder provided on the support, and a front surface layer containing an acrylic resin emulsion provided on the ink-receptive layer.Type: GrantFiled: October 23, 2007Date of Patent: March 27, 2012Assignee: Mitsubishi Paper Mills LimitedInventors: Hajime Sugita, Shigeki Shino
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Publication number: 20110287930Abstract: Provided is a thermal recording material comprising a heat-sensitive recording layer for color formation by heat and a protective layer stacked in this order on a support, the heat-sensitive recording layer containing an ethylene-vinyl alcohol copolymer, the protective layer containing a diacetone-modified polyvinyl alcohol and a crosslinker.Type: ApplicationFiled: December 21, 2009Publication date: November 24, 2011Applicant: MITSUBISHI PAPER MILLS LIMITEDInventors: Takahito Ochiai, Takao Masuda