Patents by Inventor Natsuko Kusaka

Natsuko Kusaka 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).

  • Toner
    Publication number: 20090075192
    Abstract: Disclosed is a toner comprising a resin and a colorant, wherein the colorant comprises a compound represented by formula (I) and a compound represented by formula (II).
    Type: Application
    Filed: August 19, 2008
    Publication date: March 19, 2009
    Inventors: Kenji Hayashi, Mikio Kouyama, Tomoko Sakimura, Hiroyuki Yasukawa, Hiroaki Obata, Natsuko Kusaka
  • Magenta Toner for Developing Electrostatic Image
    Publication number: 20090068581
    Abstract: A magenta toner for developing an electrostatic image, the magenta toner comprising at least a binder resin and a magenta colorant, wherein the magenta colorant comprises a compound represented by Formula (1), wherein D is represented by one of Formulas (2) to (4):
    Type: Application
    Filed: August 8, 2008
    Publication date: March 12, 2009
    Inventors: Natsuko Kusaka, Mikio Kouyama, Kenji Hayashi, Hiroaki Obata
  • MAGENTA TONER FOR DEVELOPING ELECTROSTATIC IMAGE
    Publication number: 20080261141
    Abstract: A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.
    Type: Application
    Filed: March 7, 2008
    Publication date: October 23, 2008
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hiroyuki YASUKAWA, Mikio KOUYAMA, Kenji HAYASHI, Hiroaki OBATA, Natsuko KUSAKA
  • ELECTROSTATIC IMAGE DEVELOPING TONER
    Publication number: 20080171278
    Abstract: An electrostatic image developing toner which is capable of obtaining highly chromatic full-color images of bright color without causing perceived color contamination and exhibits superior lightfastness is disclosed, wherein the toner comprises a binding resin and a colorant, and the colorant is tetraazaporphyrin or phthalocyanine compounds such as a compound represented by the following formula:
    Type: Application
    Filed: October 16, 2007
    Publication date: July 17, 2008
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hiroyuki YASUKAWA, Mikio KOUYAMA, Kenji HAYASHI, Tomoko SAKIMURA, Hiroaki OBATA, Natsuko KUSAKA
  • ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD AND YELLOW TONER USED IN THE METHOD
    Publication number: 20080113284
    Abstract: An electrostatic image forming method is described. The method includes forming latent images corresponding to yellow, magenta and cyan images on a photoreceptor, developing corresponding latent images by developers containing yellow, magenta and cyan toner to form yellow, magenta and cyan images and transferring the yellow, magenta and cyan images on a recording material, and the yellow toner and the magenta have specific reflectance characteristics described in the specification.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 15, 2008
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kenji HAYASHI, Mikio KOUYAMA, Hiroyuki YASUKAWA, Hiroaki OBATA, Natsuko KUSAKA, Tatsuya FUJISAKI