Patents by Inventor Tatsuya Morita

Tatsuya Morita 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: 20120202147
    Abstract: An anisotropic magnetic material-dispersed resin carrier including: fine magnetic particles; and a binder resin in which at least the fine magnetic particles are dispersed, wherein the anisotropic magnetic material-dispersed resin carrier has a magnetic anisotropy where magnetic fields of the fine magnetic particles are orientated in the same direction, and wherein the anisotropic magnetic material-dispersed resin carrier has a saturation magnetization of 16 emu/g to 30 emu/g, a coercive force of 15 kA/m to 40 kA/m, and a number average particle diameter of 15 ?m or more but less than 100 ?m.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 9, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kazumi SUZUKI, Masaki Yoshino, Hisao Kurosu, Tatsuya Morita, Tomoko Kino, Shingo Sakashita
  • Patent number: 8206885
    Abstract: A toner prepared by pulverization methods, including a binder resin; and a colorant, wherein the binder resin is prepared by melting and kneading a polyester resin having an unsaturated bond with a crosslinking reaction initiator diluted with a release agent, and the colorant is a press cake pigment after washed.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: June 26, 2012
    Assignee: Ricoh Company Limited
    Inventors: Satoshi Ogawa, Tatsuya Morita
  • Publication number: 20120082926
    Abstract: A toner comprising an amorphous polyester, a crystalline polyester that is forming domains in the toner, and a colorant that is being dispersed at least in the domains of the crystalline polyester. The toner may be obtained by dispersing an oil phase including the amorphous polyester or a precursor capable of producing the amorphous polyester, the crystalline polyester, the colorant, and an organic solvent, in an aqueous medium to prepare an O/W dispersion, the oil phase; and removing the organic solvent from the O/W dispersion.
    Type: Application
    Filed: September 20, 2011
    Publication date: April 5, 2012
    Inventors: Kazumi SUZUKI, Tatsuya MORITA, Shingo SAKASHITA, Tsuyoshi SUGIMOTO
  • Publication number: 20110177447
    Abstract: The present invention provides a toner containing base particles formed by emulsifying or dispersing, in an aqueous medium, a toner composition liquid which is obtained by dissolving or dispersing, in an organic solvent, at least a binder resin soluble in the organic solvent and a colorant masterbatch containing a colorant and a colorant dispersion resin, wherein the colorant dispersion resin is a resin having sparing solubility defined below: where the “sparing solubility” means that when 4 parts by mass of the colorant dispersion resin are added to and mixed with 10 parts by mass of the organic solvent, the mixture becomes white turbid at 25° C. or becomes a transparent solution once at 25° C. and then becomes white turbid within 12 hours.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 21, 2011
    Inventors: Kazumi Suzuki, Tatsuya Morita
  • Publication number: 20110008723
    Abstract: An electrophotographic toner which is produced by a pulverization method or generated in an aqueous medium, and which includes at least a colorant and a binder reasin, wherein the colorant includes at least a pigment represented by General Formula (1) described below and a fatty acid amide compound, where X and Y are independently selected from the following structures: ?C(CN)—CONH—CH3, ?C(CN)—CONH—(C6H4)—Z, and ?C(CN)—CONH—(C6H3)—Z2, where Z denotes one of an alkyl group having 1 to 4 carbon atoms, an alkoxy group and a halogen atom.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 13, 2011
    Inventors: Tatsuya MORITA, Kazumi Suzuki
  • Publication number: 20100227266
    Abstract: A toner prepared by pulverization methods, including a binder resin; and a colorant, wherein the binder resin is prepared by melting and kneading a polyester resin having an unsaturated bond with a crosslinking reaction initiator diluted with a release agent, and the colorant is a press cake pigment after washed.
    Type: Application
    Filed: February 1, 2010
    Publication date: September 9, 2010
    Inventors: Satoshi OGAWA, Tatsuya Morita
  • Publication number: 20070275315
    Abstract: A toner is provided manufactured by a method including mixing a particulate porous cross-linked resin having pores on a surface thereof and a volume average particle diameter of from 15 to 50 ?m with a pre-toner including a colored particulate material comprising a binder resin, a colorant, and a release agent and an external additive, and removing the particulate porous cross-linked resin; along with a method for manufacturing the above toner, and a developer, an image forming method, an image forming apparatus, and process cartridge using the toner.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 29, 2007
    Inventors: Tsuneyasu Nagatomo, Masayuki Ishii, Hiroshi Yamashita, Yasutada Shitara, Tatsuya Morita
  • Patent number: 5312815
    Abstract: (+)-2-(2,4-Difluorophenyl)-3-methyl-1-(1H-1,2,4-triazol-1-yl)-3-(6-(1H-1,2, 4-triazol-1-yl)pyridazin-3-ylthio)butan-2-ol and a pharmaceutically acceptable salt thereof useful as an antifungal agent are disclosed. An inclusion complex of the compound with cyclodextrin can be given either orally or intravenously and has increased absorption when administered orally.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: May 17, 1994
    Assignee: Roussel Morishita Co., Ltd.
    Inventors: Yuji Tanaka, Teruyuki Yuasa, Yoshinari Kawakami, Kohji Terashima, Tatsuya Morita, Atsushi Nishikawa, Masaji Kawashima