Patents Assigned to Mitsubishi Paper Mills Limited
  • Patent number: 9204536
    Abstract: The present invention provides an optically transparent electrode being resistant to corrosion regardless of the shape of the pattern and enabling uniform electroless plating thereon regardless of the shape of the pattern. The optically transparent electrode has, on a support, an optically transparent electrode unit and a peripheral wire unit formed of at least one peripheral wire, of which one end is electrically connected with the optically transparent electrode unit and the other end is connected with the outside, and the optically transparent electrode unit and the peripheral wire unit are formed of the same metal. The line width of at least one metal wire forming the peripheral wire unit is not uniform, and when the at least one metal wire is divided into a thinnest metal wire segment A and the other metal wire segment B electrically connected with the metal wire segment A, the line width of the metal wire segment A is 1.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: December 1, 2015
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Takenobu Yoshiki
  • Patent number: 9182697
    Abstract: Recording sheet for wet electrophotography, having excellent toner fixability and transferability when printing is carried out by using a wet electrophotographic system employing a wet toner. The recording sheet for wet electrophotography is a recording sheet to be used in a wet electrophotographic system wherein an image is transferred from a heated blanket roll to a recording sheet. The recording sheet comprises a substrate and a toner receiving layer provided thereon containing inorganic fine particles and having a pore volume with a pore radius of 100 nanometers or less measured by a nitrogen adsorption method of 0.3 mL/g or more.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 10, 2015
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Hideto Kiyama, Hideaki Ishiguro, Norimasa Miyachi, Masahiro Kawasaki, Takayuki Morikawa
  • Patent number: 9174479
    Abstract: The invention provides coated printing paper having 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: Grant
    Filed: September 21, 2011
    Date of Patent: November 3, 2015
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori Nagoshi, Kazutoshi Iida, Koji Idei, Toru Kaneko
  • Publication number: 20150298478
    Abstract: A coated paper for printing by industrial inkjet printing machines that is also suitable for offset printing, that has superior ink absorption properties in printing by an industrial inkjet printing machines, exhibits superior color densities and water resistance of images when printed by an industrial inkjet printing machine that uses water-based dye inks, superior reduction or elimination of uneven printing when printed by an industrial inkjet printing machine that uses water-based pigment inks, and desirable gloss. The present invention provides a coated paper for printing by an industrial inkjet printing machine comprising a base paper and at least two coating layers, a first coating layer and a second coating layer, provided on at least one surface of the base paper. The first coating layer is provided on the base paper and contains an organic pigment, a cationic compound, a binder, and a dogtooth-shaped precipitated calcium carbonate having a minor axis of 0.1-0.5 ?m and a major axis of 0.5-2.5 ?m.
    Type: Application
    Filed: August 9, 2013
    Publication date: October 22, 2015
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Masanori NAGOSHI
  • Publication number: 20150283840
    Abstract: The present invention provides a coated printing paper which is for use in an industrial inkjet printing machine and which has printability that can accommodate the printing speed of an industrial inkjet printing machine while having printability for a conventional printing machine such as an offset press. The present invention provides a coated printing paper for an industrial inkjet printing machine, which comprises: a base paper at least containing a boric acid compound or a borate compound; and on the base paper, a coating layer at least containing polyvinyl alcohol and ground calcium carbonate having a mean particle diameter of 0.1 ?m to 0.28 ?m.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 8, 2015
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori Nagoshi, Jun Urasaki
  • Publication number: 20150273819
    Abstract: The present invention provides a method for manufacturing printed products using an industrial inkjet printer and the method does not generate soiling of the images and printing unevenness. The present invention provides a method for manufacturing a printed product using an industrial inkjet printer, comprising: a step for printing on coated printing paper using an industrial inkjet printer, wherein the printing speed of the industrial inkjet printer is 60 m/min or more, the coated printing paper contains a support and a coating layer, and the coating layer contains ground calcium carbonate, having a cumulative frequency of a particle diameter of 1.0 ?m or less in a volume-based particle size distribution of 95% by volume or more and a mean particle diameter of 0.1 ?m to 0.28 ?m, at 60% by mass or more of the total amount of pigment in the coating layer.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 1, 2015
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Masanori Nagoshi, Koji Idei, Jun Urasaki
  • Patent number: 9033448
    Abstract: The invention provides lightweight coated paper having good offset printability. The invention provides lightweight coated paper having good printability in commercial printing utilizing the ink jet recording system. The lightweight coated paper of the invention includes base paper, and one or more coating layers disposed on at least one side of the base paper. The coating layer includes a pigment and a binder. The total coating weight of the coating layer(s) is not more than 7.5 g/m2 per side of the base paper. The coating layer contains a polycondensate of an aliphatic monoamine or an aliphatic polyamine and an epihalohydrin compound, and a water-soluble polyvalent cation salt. The content of the water-soluble polyvalent cation salt in the coating layer is 0.3 g/m2 to 1.0 g/m2 per side of the base paper.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: May 19, 2015
    Assignee: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Tetsuya Nishi, Koji Idei, Masanori Nagoshi, Toru Kaneko
  • Patent number: 8980791
    Abstract: Provided is a thermal recording material that is excellent in water resistance and prevention of print head wear, less prone to discoloration in the non-printing area, and stably producible. The thermal recording material comprises a protective layer formed by applying a coating liquid for forming the protective layer, the coating liquid being prepared by mixing an acetoacetyl-modified polyvinyl alcohol and calcium glyoxylate particles with a maximum diameter less than 500 ?m and an average diameter of 125 ?m or less.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Shinichiro Matsumoto
  • Patent number: 8978553
    Abstract: The present invention relates to a heat-sensitive lithographic printing plate requiring no on-press development or no water development, which provides clear printed image, has sufficient printing wear resistance, and has improved scumming, more specifically to a heat-sensitive lithographic printing plate comprising, on a water-resistant support, an image-forming layer containing a thermoplastic resin, a water-soluble polymer compound, and at least one selected from a compound of the following formulae (1), (2), (3) and (4). The present invention also relates to a direct heat-sensitive lithographic printing plate by which the generation of sticking phenomenon has been reduced.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Masao Utsumi, Yoshihito Ohashi, Kouichi Agata
  • Publication number: 20150049140
    Abstract: The invention provides lightweight coated paper having good offset printability. The invention provides lightweight coated paper having good printability in commercial printing utilizing the ink jet recording system. The lightweight coated paper of the invention includes base paper, and one or more coating layers disposed on at least one side of the base paper. The coating layer includes a pigment and a binder. The total coating weight of the coating layer(s) is not more than 7.5 g/m2 per side of the base paper. The coating layer contains a polycondensate of an aliphatic monoamine or an aliphatic polyamine and an epihalohydrin compound, and a water-soluble polyvalent cation salt. The content of the water-soluble polyvalent cation salt in the coating layer is 0.3 g/m2 to 1.0 g/m2 per side of the base paper.
    Type: Application
    Filed: January 25, 2013
    Publication date: February 19, 2015
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Tetsuya Nishi, Koji Idei, Masanori Nagoshi, Toru Kaneko
  • Publication number: 20150024250
    Abstract: A base material for a lithium ion secondary battery separator provided by the present invention comprises a polyethylene terephthalate fiber, in which an average fiber diameter of the polyethylene terephthalate fiber is 9.0 ?m or less, a specific X-ray diffraction intensity derived from the polyethylene terephthalate fiber is 300 cps/(g/m2) or more, and a coefficient of variation of a specific X-ray diffraction intensity is 12.0% or less, and is excellent in the workability during production and excellent in mechanical strength, uniformity and handling in a subsequent treatment step.
    Type: Application
    Filed: January 25, 2013
    Publication date: January 22, 2015
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Hiroo Kaji, Toshihiro Shigematsu, Nobuaki Hirota, Hiroshi Matsuda
  • Patent number: 8927110
    Abstract: 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: Grant
    Filed: September 21, 2011
    Date of Patent: January 6, 2015
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Koji Idei, Masanori Nagoshi, Kazutoshi Iida, Atsushi Nakamura
  • Publication number: 20140363581
    Abstract: Provided is a printing coated paper which is advantageous not only in that the coated paper has offset printability and causes no mottling in the printed area even in ink jet printing, but also in that the coated paper exhibits excellent rubbing resistance with respect to the printed area and excellent print density of a dye ink. The task of the present invention is achieved by a printing coated paper having a coating layer comprised mainly of a pigment and a binder formed on at least one side of a base paper, wherein the base paper is a treated base paper which has been subjected to size press using a treatment solution containing at least one member selected from a cationic resin and a water-soluble multivalent cation salt, wherein the total applied amount per each side of the at least one member selected from a cationic resin and a water-soluble multivalent cation salt, in terms of the solids content, is in the range of from 0.1 to 5.
    Type: Application
    Filed: January 15, 2013
    Publication date: December 11, 2014
    Applicant: Mitsubishi Paper Mills Limited
    Inventors: Masanori Nagoshi, Koji Idei, Tetsuya Nishi, Toru Kaneko
  • Publication number: 20140332262
    Abstract: Provided is an optically transparent electrode of which the visibility of the electrode pattern is low. The optically transparent electrode is produced by joining two optically transparent conductive materials each having, on one side of the optically transparent base material, a large lattice 11 formed of a grid-like conductive part and a connector 12 which has at least one connector lattice 16 and which electrically connects adjacent large lattices 11, and is characterized by that the two optically transparent conductive materials are overlapped so that the centers of the connectors 12 thereof approximately coincide, and by that at least one of the two optically transparent conductive materials has a broken lattice 31 where a part of a thin line is broken and electrical conductivity is lost at a position corresponding to the overlapped connectors 12 and/or to a portion surrounded by the large lattice 11 and the connector 12.
    Type: Application
    Filed: July 19, 2012
    Publication date: November 13, 2014
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Takenobu Yoshiki
  • Patent number: 8883274
    Abstract: An ink jet recording material comprises at least two layers of ink-receptive layers mainly containing inorganic fine particles having an average secondary particle size of 500 nm or less on a resin-coated paper having a resin layer on at least one surface of a base paper, and the ink-receptive layer nearer to the support contains a pearlescent pigment.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Masahiro Kawasaki, Toru Kaneko, Satoshi Kaneko, Daichi Miyake
  • Patent number: 8647813
    Abstract: 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: Grant
    Filed: March 25, 2011
    Date of Patent: February 11, 2014
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Akira Furukawa, Takahiro Hagihara
  • Patent number: 8623785
    Abstract: 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: Grant
    Filed: March 28, 2011
    Date of Patent: January 7, 2014
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Nobuko Takahama, Takao Masuda, Yoshimi Ikezawa, Takahito Ochiai, Shinichiro Matsumoto, Yohei Uesugi
  • Publication number: 20140005046
    Abstract: Provided is a thermal recording material that is excellent in water resistance and prevention of print head wear, less prone to discoloration in the non-printing area, and stably producible. The thermal recording material comprises a protective layer formed by applying a coating liquid for forming the protective layer, the coating liquid being prepared by mixing an acetoacetyl-modified polyvinyl alcohol and calcium glyoxylate particles with a maximum diameter less than 500 ?m and an average diameter of 125 ?m or less.
    Type: Application
    Filed: February 14, 2012
    Publication date: January 2, 2014
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventor: Shinichiro Matsumoto
  • Patent number: 8609210
    Abstract: 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: Grant
    Filed: July 13, 2010
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Masanori Nagoshi, Koji Idei, Hiroshi Matsuda, Kazutoshi Iida, Jun Urasaki
  • Patent number: 8602550
    Abstract: 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: Grant
    Filed: June 29, 2010
    Date of Patent: December 10, 2013
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Koji Idei, Hiroo Kaji, Hiroshi Matsuda, Masanori Nagoshi, Kazutoshi Iida, Jun Urasaki