Patents by Inventor Tenjiku Eiji

Tenjiku Eiji 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: 7514193
    Abstract: Provided is a developing toner for electrostatic latent images capable of coping with the size reduction of an image forming apparatus and decrease of the consumption amount, not shortening the working life of a photoreceptor, less causing paper jam, background fogging, etc., excellent in various characteristics required for the toner, and capable of forming images of good picture quality. The developing toner being used when images are formed to a recording material in an image forming apparatus comprising an image forming station, a recording material feeding station, an image fixing station and a controlling station, the developing toner for electrostatic latent images containing hydrophobic fluidizing particles deposited to the surface of coloring resin particles comprising a binder resin containing a polyester resin, a polyalkylene, a polyolefin dispersant and a non-oxidized polyethylene resin, and an inorganic pigment, and having time constant ? of from 100 to 350 msec.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 7, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hitoshi Nagahama, Tatsuo Imafuku, Takahiro Bito, Tenjiku Eiji, Takeshi Satoh, Ohkawa Takeshi
  • Publication number: 20050221214
    Abstract: Provided is a developing toner for electrostatic latent images capable of coping with the size reduction of an image forming apparatus and decrease of the consumption amount, not shortening the working life of a photoreceptor, less causing paper jam, background fogging, etc., excellent in various characteristics required for the toner, and capable of forming images of good picture quality. The developing toner being used when images are formed to a recording material in an image forming apparatus comprising an image forming station, a recording material feeding station, an image fixing station and a controlling station, the developing toner for electrostatic latent images containing hydrophobic fluidizing particles deposited to the surface of coloring resin particles comprising a binder resin containing a polyester resin, a polyalkylene, a polyolefin dispersant and a non-oxidized polyethylene resin, and an inorganic pigment, and having time constant ? of from 100 to 350 msec.
    Type: Application
    Filed: March 28, 2005
    Publication date: October 6, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hitoshi Nagahama, Tatsuo Imafuku, Takahiro Bito, Tenjiku Eiji, Takeshi Satoh, Ohkawa Takeshi