Patents Assigned to Mitsubishi Paper Mills Limited
  • Patent number: 7977260
    Abstract: The present invention provides a separator for an electric double layer capacitor comprising a porous sheet containing fibrillated heat-resistant fibers, polyester fibers having a fineness of 0.01 dtex to less than 0.10 dtex, and fibrillated cellulose, which is suitable for use as a separator for an electric double layer capacitor operating at high voltages of 3 V or more.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: July 12, 2011
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Takahiro Tsukuda, Masatoshi Midorikawa, Tomohiro Sato
  • Patent number: 7897012
    Abstract: This invention is to provide a sheet product that is excellent in moisture absorption amount, moisture absorption speed and moisture release speed and is capable of keeping a powder from falling off and that can have a large content of a moisture adsorbent, and the sheet product of this invention contains (a) a moisture adsorbent formed of a tubular or fibrous metal oxide, (b) a cellulosic fibrillated fiber, and (c) an organic fiber having a fineness of 0.01 dtex to 0.45 dtex and is characteristically produced by a paper-making method.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: March 1, 2011
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Kazuchiyo Takaoka, Masanobu Matsuoka, Masatoshi Kito
  • Patent number: 7763333
    Abstract: This invention provides an ink jet recording medium, which is small in coverage and, at the same time, can simultaneously realize high gloss and ink absorption. The ink jet recording medium is produced by coating a lower layer comprising a water-absorptive pigment, a latex, and boric acid or its salt and an upper layer comprising a submicron pigment and polyvinyl alcohol, and conducting casting.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 27, 2010
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Makoto Kato, Masanori Nagoshi, Koji Igarashi, Yuri Watanabe, Hidetsugu Oda, Terufumi Yamaguchi
  • Patent number: 7749620
    Abstract: The present invention is to provide an electromagnetic wave shielding material which comprises a transparent substrate and a fine line pattern formed thereon, wherein the fine line pattern comprises a metal plating film using a physically developed metal silver as a catalytic nucleus and a process for preparing an electromagnetic wave shielding material which comprises exposing a light-sensitive material having a physical development nuclei layer and a silver halide emulsion layer on a transparent substrate in this order, precipitating metal silver with an optional fine line pattern onto the physical development nuclei layer by physical development, then, removing a layer provided on the physical development nuclei layer, and subjecting to plating a metal with the use of the physically developed metal silver as a catalytic nucleus.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: July 6, 2010
    Assignees: Fujimori Kogyo Co., Ltd., Mitsubishi Paper Mills Limited
    Inventors: Taro Yoshida, Atsushi Suzuki, Yasuo Tsubai, Kazuhisa Kobayashi
  • Patent number: 7713599
    Abstract: The object of the present invention is to provide an ink jet recording material which has no cracks on the surface of the ink-receiving layer and possesses both the color developability and the absorbability of pigment inks. According to the present invention, there is provided an ink jet recording material formed by coating a coating solution of a pigment layer and a coating solution of at least one ink-receiving layer in succession on at least one side of a paper support and drying the resulting coating layers, wherein the pigment contained in the pigment layer has an average secondary particle diameter of not less than 1 ?m and not more than 5 ?m, 50% by volume or more of the total volume of the pigment has a secondary particle diameter of not less than 1.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: May 11, 2010
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Hiroaki Watanabe, Katsuaki Arai, Yasuro Yokota, Suguru Kashima
  • Publication number: 20100112478
    Abstract: The present invention provides a highly sensitive photosensitive lithographic printing plate material capable of being used in a CTP system, which allows on-press development and/or development with water and has superior printability.
    Type: Application
    Filed: March 21, 2008
    Publication date: May 6, 2010
    Applicant: Mitsubishi Paper Mills Limited
    Inventor: Akira Furukawa
  • Patent number: 7700170
    Abstract: There are disclosed an ink-jet recording material having at least two ink-receptive layers mainly containing fine particulate silica on a support, which comprises an ink-receptive layer positioned farthest from the support contains a water-soluble zirconium compound, and the ink-jet recording material satisfies at least one of the following requirements (a) and (b): (a) a water-soluble zirconium compound is present with a larger amount at a portion apart from the support than a portion nearer to the support, and a cationic emulsion is contained in the ink-receptive layer farthest from the support. (b) a water-soluble aluminum compound is contained in an ink-receptive layer positioned nearer to the support, and a process for preparing the same.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: April 20, 2010
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Makoto Motoda, Hideto Kiyama, Izumi Akaiwa
  • Patent number: 7679004
    Abstract: As means for solving a problem of a positional shift of a land and a hole which is caused by an alignment in the formation of an etching resist layer and a plated resist layer in a method of manufacturing a circuit board, there are provided a method of manufacturing a circuit board including the steps of forming a first resin layer on a surface of an insulating substrate having a conductive layer on the surface and an internal wall of a through hole or/and a non-through hole, forming a second resin layer which is insoluble or slightly soluble in a developing solution for the first resin layer on the first resin layer provided on the surface conductive layer, and removing the first resin layer provided over the hole with the developing solution for the first resin layer, and a method of manufacturing a circuit board including the step of uniformly charging a surface of the first resin layer to induce a potential difference to the first resin layer provided over the hole and the first resin layer provided on th
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: March 16, 2010
    Assignees: Shinko Electric Industries Co., Ltd., Mitsubishi Paper Mills Limited
    Inventors: Katsuya Fukase, Toyoaki Sakai, Munetoshi Irisawa, Toyokazu Komuro, Yasuo Kaneda, Masanori Natsuka, Wakana Aizawa
  • Patent number: 7641764
    Abstract: The object of the present invention is to provide a non-woven fabric comprising a glass fiber which has a strength, flexibility and water resistance, has less skin irritancy and a good surface decoration property, and a process for producing the same, more specifically, to provide a non-woven fabric for a gypsum board which is used as a reinforcing material for a gypsum board placed on one side or both sides of the gypsum board, and a process for producing the same. A non-woven fabric for a gypsum board comprising 20 to 60% by weight of a glass fiber, 10 to 50% by weight of an organic fiber and 10 to 50% by weight of a fibrous binder, which contains the organic fiber at least on a gypsum core contact surface, is provided.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 5, 2010
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Mitsuo Yoshida, Kunihiro Tanabe, Hitoshi Fujiki
  • Publication number: 20090233237
    Abstract: It is to provide a process for preparing a conductive material in which transparency and conductivity are both high, and storage stability is high, and further, in a process for preparing a conductive material utilizing ultra fine silver particles, to provide a process for preparing a conductive material having high conductivity without requiring a calcination step which has conventionally been required. A process for preparing a conductive material having a conductive pattern containing silver on a support, which process for preparing a conductive material comprises acting at least one of the following mentioned (I) to (IV) on the pattern portion containing silver provided on the support: (I) a reducing substance, (II) a water-soluble phosphorus oxo acid compound, (III) a water-soluble halogen compound, (IV) warm water of 55° C. or higher.
    Type: Application
    Filed: June 22, 2007
    Publication date: September 17, 2009
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Takenobu Yoshiki, Shigeki Shino, Kazuhisa Kobayashi
  • Patent number: 7563494
    Abstract: There is disclosed an ink-jet recording material which comprises a light transmitting support, at least one ink-receptive layer provided on one surface of the support and at least one back-coating layer provided on the opposite surface of the support, wherein at least one of the back-coating layers contains inorganic fine particles having an average particle size of a primary particle of 5 to 50 nm and a binder, and a void ratio of the layer is 70% by volume or less.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: July 21, 2009
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Takeshi Nagashima, Satoshi Kaneko
  • Publication number: 20090123676
    Abstract: This invention provides an ink jet recording medium, which is small in coverage and, at the same time, can simultaneously realize high gloss and ink absorption. The ink jet recording medium is produced by coating a lower layer comprising a water-absorptive pigment, a latex, and boric acid or its salt and an upper layer comprising a submicron pigment and polyvinyl alcohol, and conducting casting.
    Type: Application
    Filed: September 7, 2006
    Publication date: May 14, 2009
    Applicant: Mitsubishi Paper Mills Limited
    Inventors: Makoto Kato, Masanori Nagoshi, Koji Igarashi, Yuri Watanabe, Hidetsugu Oda, Terufumi Yamaguchi
  • Patent number: 7441887
    Abstract: An object of the present invention is to provide an ink jet print system in which quality troubles (e.g. banding and ink overflow) caused by an unsuitable combination of ink and an ink jet recording medium in an ink jet recording apparatus in the case where the ink jet recording medium is an imitation, are obviated on the basis of printing control information obtained from the ink jet recording medium with an information-detecting sensor, and it is possible to prevent the employment of an ink jet recording medium which a user cannot judge to be a genuine product or an imitation. According to the present invention, an ink jet print system can be obtained in which printing information obtained from an image processor and the printing control information of the ink jet recording medium obtained from the information-detecting sensor are processed and on the basis of information of these kinds, the best image is always formed with the ink jet recording apparatus by the use of a genuine product.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: October 28, 2008
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Takao Senga, Kunio Kasamatsu, Akitoshi Kajihara
  • Patent number: 7416587
    Abstract: A thermally regenerative deodorizing filter, which comprises a deodorizing filter comprising a deodorant which is adaptable to a thermal regeneration and a honeycomb base material having a heat conductivity which carries the deodorant, and a heating element for regenerating the deodorizing filter which is integrated in the deodorizing filter, wherein the heating element is controlled to a predetermined temperature during the regeneration.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: August 26, 2008
    Assignee: Mitsubishi Paper Mills Limited
    Inventor: Yasuyoshi Kondo
  • Patent number: 7405172
    Abstract: The present invention provides a non-woven fabric for an alkaline battery separator comprising semi-aromatic polyamide fibers comprising a dicarboxylic acid component, in which 60 mol % or more of the dicarboxylic acid component is an aromatic carboxylic acid component, and a diamine component, in which 60 mol % or more of the diamine component is an aliphatic alkylene diamine having 6 to 12 carbon atoms, and ethylene/vinyl alcohol copolymer fibers; wherein, the separator non-woven fabric has superior alkaline resistance in which the weight loss rate after 20 days is 5% or less in an alkaline resistance test at 90° C. in aqueous KOH solution having a specific gravity of 1.30. Consequently, since the present invention enables rapid charging and large-current discharging while also allowing thickness to be reduced for higher capacity, it can be preferably used as a non-woven fabric for an alkaline battery separator.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: July 29, 2008
    Assignees: Mitsubishi Paper Mills Limited, Kuraray Co., Ltd.
    Inventors: Toshihiro Shigematsu, Shigehiro Maeda, Takashi Katayama
  • Patent number: 7326440
    Abstract: There is disclosed a sheet-state ink-jet recording material which comprises a water-resistant support and at least one ink-receptive layer provided on the support, wherein at least one of the ink-receptive layers contains inorganic fine particles having an average primary particle size of 30 nm or less and a hydrophilic binder, and a longitudinal direction of the sheet-state ink-jet recording material is cut at a right angle to a flowing direction of the recording material at a time of coating the ink-receptive layer.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: February 5, 2008
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Yukio Tokunaga, Iwao Maekawa
  • Publication number: 20070298235
    Abstract: The object of the present invention is to provide a non-woven fabric comprising a glass fiber which has a strength, flexibility and water resistance, has less skin irritancy and a good surface decoration property, and a process for producing the same, more specifically, to provide a non-woven fabric for a gypsum board which is used as a reinforcing material for a gypsum board placed on one side or both sides of the gypsum board, and a process for producing the same. A non-woven fabric for a gypsum board comprising 20 to 60% by weight of a glass fiber, 10 to 50% by weight of an organic fiber and 10 to 50% by weight of a fibrous binder, which contains the organic fiber at least on a gypsum core contact surface, is provided.
    Type: Application
    Filed: December 2, 2005
    Publication date: December 27, 2007
    Applicant: MITSUBISHI PAPER MILLS LIMITED
    Inventors: Mitsuo Yoshida, Kunihiro Tanabe, Hitoshi Fujiki
  • Patent number: 7299862
    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.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: November 27, 2007
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Paper Mills Limited
    Inventors: Masaru Takada, Hidemoto Arai, Youichi Sugiyama, Hisao Yokoya, Kenzo Takahashi, Junji Harada, Masayuki Tsubaki
  • Patent number: 7275879
    Abstract: Disclosed is a processing device of a photo-sensitive material which comprises a conveying device for conveying a photo-sensitive material, a slot die for applying a processing liquid to the photo-sensitive material conveyed by the conveying device, a reservoir tank of the processing liquid, a supply device of the processing liquid for supplying a processing liquid in the reservoir tank of the processing liquid to the slot die, a support roll of the photo-sensitive material arranged at a position opposite to and spaced from a tip of the slot die, a device for detecting a photo-sensitive material, and a driving device for rotating the support roll of the photo-sensitive material which can rotate the support roll at least in the direction reverse to a conveying direction of the photo-sensitive material.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: October 2, 2007
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Akira Kunihiro, Sadao Kuriu, Takanori Takei
  • Publication number: 20070181994
    Abstract: As means for solving a problem of a positional shift of a land and a hole which is caused by an alignment in the formation of an etching resist layer and a plated resist layer in a method of manufacturing a circuit board, there are provided a method of manufacturing a circuit board including the steps of forming a first resin layer on a surface of an insulating substrate having a conductive layer on the surface and an internal wall of a through hole or/and a non-through hole, forming a second resin layer which is insoluble or slightly soluble in a developing solution for the first resin layer on the first resin layer provided on the surface conductive layer, and removing the first resin layer provided over the hole with the developing solution for the first resin layer, and a method of manufacturing a circuit board including the step of uniformly charging a surface of the first resin layer to induce a potential difference to the first resin layer provided over the hole and the first resin layer provided on th
    Type: Application
    Filed: March 2, 2005
    Publication date: August 9, 2007
    Applicants: SHINKO ELECTRIC INDUSTRIES CO., LTD., MITSUBISHI PAPER MILLS LIMITED
    Inventors: Katsuya Fukase, Toyoaki Sakai, Munetoshi Irisawa, Toyokazu Komuro, Yasuo Kaneda, Masanori Natsuka, Wakana Aizawa