Patents by Inventor Teigen Lee

Teigen Lee 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: 6555282
    Abstract: A toner for developing an electronic latent image, including toner particles containing a binder resin and a colorant, and an external additive, is provided. The external additive contains silica formed by a sol-gel method of which the surface is subjected to hydrophobic treatment and which has an average primary particle size of 80 to 300 nm, a water content of 3 to 15% and a volume resistivity of 1×1013 &OHgr;cm or more. The invention further provides an image forming method and an image forming apparatus using the same. The toner for developing an electrostatic latent image is good in transferability over a long period of time and gives a high image quality without causing an image defect.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: April 29, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroyoshi Okuno, Akira Matsumoto, Tsutomu Kubo, Teigen Lee, Yuusaku Shibuya, Yutaka Sugizaki
  • Patent number: 6403274
    Abstract: An electrophotographic toner excellent in coloring property, fixing property, OHP transmittance and charging property, a process for producing the same, and a two-component developer are provided. The electrophotographic toner contains at least a binder resin, a colorant, a releasing agent and inorganic fine particles, in which the toner has a conglobation degree of about from 100 to 130, the releasing agent has an average particle diameter of about from 0.1 to 1 &mgr;m, a ratio of a major axis and a minor axis of about from 1.1 to 10, and the inorganic particles are dispersed in the toner particles.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: June 11, 2002
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazufumi Tomita, Hiroyuki Tanaka, Hirotaka Matsuoka, Teigen Lee, Seiichi Takagi
  • Publication number: 20020061457
    Abstract: A toner for developing an electrostatic latent image, including toner particles containing a binder resin and a colorant, and an external additive, is provided. The external additive contains silica of which the surface is subjected to hydrophobic treatment and which has an average primary particle size of 80 to 300 nm, a water content of 3 to 15% and a volume resistivity of 1×1013 &OHgr;cm or more. The invention further provides an image forming method and an image forming apparatus using the same. The toner for developing an electrostatic latent image is good in transferability over a long period of time and gives a high image quality without causing an image defect.
    Type: Application
    Filed: September 26, 2001
    Publication date: May 23, 2002
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hiroyoshi Okuno, Akira Matsumoto, Tsutomu Kubo, Teigen Lee, Yuusaku Shibuya, Yutaka Sugizaki
  • Publication number: 20010046634
    Abstract: An electrophotographic toner excellent in coloring property, fixing property, OHP transmittance and charging property, a process for producing the same, and a two-component developer are provided. The electrophotographic toner contains at least a binder resin, a colorant, a releasing agent and inorganic fine particles, in which the toner has a conglobation degree of about from 100 to 130, the releasing agent has an average particle diameter of about from 0.1 to 1 &mgr;m, a ratio of a major axis and a minor axis of about from 1.1 to 10, and the inorganic particles are dispersed in the toner particles.
    Type: Application
    Filed: April 10, 2001
    Publication date: November 29, 2001
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazufumi Tomita, Hiroyuki Tanaka, Hirotaka Matsuoka, Teigen Lee, Seiiche Takagi