Patents by Inventor Masaya Tosaka

Masaya Tosaka 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).

  • Publication number: 20110111144
    Abstract: An inkjet recording medium comprising an ink receiving layer formed by applying a coating layer containing a pigment and a binder to at least one side of a support having air permeability, and applying a coagulation solution for coagulating the binder on a surface of the coating layer by a coagulation cast coating method, wherein a boron compound, a cationic resin and cationic colloidal silica contained in the coagulation solution exist on the surface of the ink receiving layer.
    Type: Application
    Filed: March 25, 2009
    Publication date: May 12, 2011
    Inventors: Masafumi Wasai, Takayuki Sato, Masaya Tosaka, Kei Takigawa
  • Publication number: 20100291323
    Abstract: An inkjet recording medium comprising an ink-receiving layer containing a pigment and a binder formed on at least one side of a base paper containing calcium carbonate as a filler and pulp by a cast coating method, wherein the ash content of the calcium carbonate in the base paper is 15-30% by mass, and the ink-receiving layer contains colloidal silica as the pigment having a primary particle diameter of 30-70 nm and a ratio of the secondary particle diameter to the primary particle diameter of 1.5-3.0.
    Type: Application
    Filed: September 29, 2008
    Publication date: November 18, 2010
    Inventors: Masafumi Wasai, Masaya Tosaka, Hiroshi Koyamoto, Kei Takigawa, Takayuki Sato, Atsushi Ono, Yoshio Yoshida
  • Patent number: 7655287
    Abstract: An inkjet recording medium obtained by forming a coating layer containing a pigment and a binder on the surface of a base material and coating layer is subsequently pressed onto a heated mirror finished surface to dry to form an ink absorbing layer through a cast coating method, wherein pigment contains a colloidal silica that has a primary particle diameter of from 10 nm to 100 nm while the ratio of the secondary particle diameter to primary particle diameter is from 1.5 to 3.0.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: February 2, 2010
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Yoshio Yoshida, Shoichi Endo, Masanori Kawashima, Susumu Hagisawa, Takayuki Fujimoto, Masaya Tosaka, Yuu Suzuki, Kaoru Hamada
  • Publication number: 20060050130
    Abstract: An inkjet recording medium obtained by forming a coating layer containing a pigment and a binder on the surface of a base material and coating layer is subsequently pressed onto a heated mirror finished surface to dry to form an ink absorbing layer through a cast coating method, wherein pigment contains a colloidal silica that has a primary particle diameter of from 10 nm to 100 nm while the ratio of the secondary particle diameter to primary particle diameter is from 1.5 to 3.0.
    Type: Application
    Filed: March 29, 2004
    Publication date: March 9, 2006
    Inventors: Yoshio Yoshida, Shoichi Endo, Masanori Kawashima, Susumu Hagisawa, Takayuki Fujimoto, Masaya Tosaka, Yuu Suzuki, Kaoru Hamada
  • Patent number: 6918994
    Abstract: Printing paper superior in a texture, a feel and ease in turning the page is provided by adjusting the product of the paper density, the breaking length of a paper-making direction and the Young's modulus of the paper-making direction of the paper made by a paper machine within the limits of no less than 2×1018 and no more than 10×1018 g·N/m4 by using the following means independently or in appropriate combination: a means of lowering paper density by increasing the compounding ratios of low-density pulp and low-density filler, using bulking chemicals or reducing press pressure during paper-making process, a means of lowering the paper breaking length of a paper-making direction by improving the compounding ratios of filler, and a means of lowering the Young's modulus of the paper by using a softening agent.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: July 19, 2005
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Takashi Ochi, Masaya Tosaka, Takehide Kasahara, Hideki Fujiwara
  • Publication number: 20030051840
    Abstract: Printing paper superior in a texture, a feel and ease in turning the page is provided by adjusting the product of the paper density, the breaking length of a paper-making direction and the Young's modulus of the paper-making direction of the paper made by a paper machine within the limits of no less than 2×1018 and no more than 10×1018 g·N/m4 by using the following means independently or in appropriate combination: a means of lowering paper density by increasing the compounding ratios of low-density pulp and low-density filler, using bulking chemicals or reducing press pressure during paper-making process, a means of lowering the paper breaking length of a paper-making direction by improving the compounding ratios of filler, and a means of lowering the Young's modulus of the paper by using a softening agent.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 20, 2003
    Inventors: Takashi Ochi, Masaya Tosaka, Takehide Kasahara, Hideki Fujiwara