Patents by Inventor Katsuyoshi Imabeppu

Katsuyoshi Imabeppu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6096157
    Abstract: A cast coated paper for ink jet recording is prepared by a process including the steps of: forming on a base paper an undercoating layer containing alumina having a bulk density of at most 0.2 g/cm.sup.3 and an adhesive, applying onto the undercoating layer an overcoating liquid containing a resin to form a wet overcoating layer, and pressing the wet overcoating layer against a heated drum having a mirror-finished surface to dry the overcoating layer, thereby forming a cast-coating layer. The resultant cast coated paper shows not only good gloss and ink jet recording performances (inclusive of ink absorptivity and recorded image density), but also good weather-fastness of recorded images.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: August 1, 2000
    Assignees: Canon Kabushiki Kaisha, Oji Paper Co., Ltd.
    Inventors: Katsuyoshi Imabeppu, Shinichi Asano, Hiroyuki Ohashi, Kazuhiro Nojima, Eiichi Suzuki, Mamoru Sakaki
  • Patent number: 5952051
    Abstract: A cast coated paper for ink jet recording is constituted to include, in lamination: a base paper, an undercoating layer comprising a pigment and an adhesive, and a cast-coating layer comprising a polymer having a glass transition point of at least 40.degree. C. formed by polymerization of an ethylenically unsaturated monomer. The cast coated paper is preferably controlled to have an air permeability of at most 300 sec/100 cc. The undercoating preferably contains a cationic resin, particularly preferably a copolymer of a polyalkylenepolyamine and dicyandiamide. The cast coated paper thus produced with an excellent ink absorptivity suitable for ink jet recording while retaining a high surface gloss.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: September 14, 1999
    Assignees: Canon Kabushiki Kaisha, Oji Paper Co., Ltd.
    Inventors: Shinichi Asano, Hiroyuki Ohashi, Hiromasa Kondo, Kazuhiro Nojima, Katsuyoshi Imabeppu, Mamoru Sakaki, Eiichi Suzuki
  • Patent number: 5741584
    Abstract: A cast coated paper for ink jet recording is prepared by a process including the steps of: forming on a base paper an undercoating layer comprising alumina having a bulk density of at most 0.2 g/cm.sup.3 and an adhesive, applying onto the undercoating layer an overcoating liquid comprising a resin to form a wet overcoating layer, and pressing the wet overcoating layer against a heated drum having a mirror-finished surface to dry the overcoating layer, thereby forming a cast-coating layer. The resultant cast coated paper shows not only good gloss and ink jet recording performances (inclusive of ink absorptivity and recorded image density), but also good weather-fastness of recorded images.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: April 21, 1998
    Assignees: Canon Kabushiki Kaisha, Oji Paper Co., Ltd.
    Inventors: Katsuyoshi Imabeppu, Shinichi Asano, Hiroyuki Ohashi, Kazuhiro Nojima, Eiichi Suzuki, Mamoru Sakaki
  • Patent number: 5670242
    Abstract: A cast coated paper for ink jet recording is constituted to include, in lamination: a base paper, an undercoating layer comprising a pigment and an adhesive, and a cast-coating layer comprising a polymer having a glass transition point of at least 40.degree. C. formed by polymerization of an ethylenically unsaturated monomer. The cast coated paper is preferably controlled to have an air permeability of at most 300 sec/100 cc. The undercoating preferably contains a cationic resin, particularly preferably a copolymer of a polyalkylenepolyamine and dicyandiamide. The cast coated paper thus produced with an excellent ink absorptivity suitable for ink jet recording while retaining a high surface gloss.
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: September 23, 1997
    Assignees: Canon Kabushiki Kaisha, OJI Paper Co., Ltd.
    Inventors: Shinichi Asano, Hiroyuki Ohashi, Hiromasa Kondo, Kazuhiro Nojima, Katsuyoshi Imabeppu, Mamoru Sakaki, Eiichi Suzuki