Patents by Inventor Atsumi Kurita

Atsumi Kurita 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: 20070269245
    Abstract: A fixing member includes: a core material; and a coating layer that coats the core material, in which a wear-resistance imparting additive with an average particle diameter of up to approximately 1 ?m is dispersed.
    Type: Application
    Filed: December 15, 2006
    Publication date: November 22, 2007
    Inventors: Tohru Inoue, Aya Kakishima, Atsumi Kurita
  • Publication number: 20070116501
    Abstract: A fixing device includes a heating rotation body, a heat source and a pressurization member. The heating rotation body has an endless peripheral surface that moves circularly. The heat source heats the heating rotation body. The pressurization member is in pressure-contact with the peripheral surface of the heating rotation body to press a recording medium, which passes through a nip between the pressurization member and the heating rotation body, against the peripheral surface of the heating rotation body. The pressurization member includes a base material and plural layers deposited on the base material. A volume resistance of a surface layer forming a surface of the pressurization member is larger than that of a layer disposed just below the surface layer. The layer disposed just below the surface layer is grounded.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 24, 2007
    Inventors: Tohru Inoue, Aya Kakishima, Atsumi Kurita, Tetsuo Yamada
  • Publication number: 20070053729
    Abstract: A fixing device for heating and pressing a recording medium carrying an unfixed toner image or an unfixed ink image to fix the unfixed toner image or the unfixed ink image on the recording medium, includes a heating roller which has a heating source and has an endless peripheral surface moves around an axis, a pressure roller which is pressed onto the peripheral surface of the heating roller, and presses the recording medium passing between the pressure roller and the heating roller onto the peripheral surface of the heating roller, and plural cleaning sections which are provided to make contact with the heating roller. At least one of the cleaning sections is set, at a portion making contact with the heating roller, to have a relatively negative potential with respect to a surface potential of the heating roller.
    Type: Application
    Filed: February 15, 2006
    Publication date: March 8, 2007
    Inventors: Tetsuo Yamada, Atsumi Kurita, Toru Inoue, Yasuyuki Kobayashi, Yasushi Nagata, Aya Kakishima, Tatsunori Izawa
  • Publication number: 20070048037
    Abstract: An image forming apparatus includes an image forming section which transfers toner onto a latent image due to a difference of electrostatic potential to form a toner image, a transfer section which transfers the toner image onto a recording material directly or via an intermediate transfer body, a fixing section which passes the recording material carrying the toner image between a fixing rotation body and a pressurizing member contacted and pressed each other, and heats and pressurizes to fix the toner image, and a paper dust amount measuring section which measures an amount of paper dust adhering to the recording material. The image forming section forms an image pattern with high toner area coverage at a predetermined interval based on the measured amount of paper dust, and the fixing section fixes the image pattern with the high toner area coverage transferred onto a recording material.
    Type: Application
    Filed: February 8, 2006
    Publication date: March 1, 2007
    Inventors: Aya Kakishima, Yasushi Nagata, Yasuyuki Kobayashi, Tatsunori Izawa, Junpei Amano, Toru Inoue, Tetsuo Yamada, Atsumi Kurita
  • Publication number: 20070048039
    Abstract: An image forming apparatus includes an image forming section which transfers toner onto a latent image to form a toner image, a transfer section which transfers the toner image onto a recording material directly or via an intermediate transfer body, a fixing section which has a pair of rotatable members contacted and pressed each other, in which the recording material carrying the toner image is passed through the pair of rotatable members, and heats and presses the toner image to fix the toner image on the recording material, a cleaning section which cleans a peripheral surface of one of the pair of rotatable members, a paper dust amount measuring section which measures an amount of paper dust separably adhering to the recording material, before the toner image is transferred, and a control section which controls a cleaning operation rate of the cleaning section based on the measured amount of paper dust.
    Type: Application
    Filed: February 9, 2006
    Publication date: March 1, 2007
    Inventors: Aya Kakishima, Yasushi Nagata, Yasuyuki Kobayashi, Tatsunori Izawa, Junpei Amano, Toru Inoue, Tetsuo Yamada, Atsumi Kurita
  • Patent number: 6819881
    Abstract: To provide an image forming apparatus capable of forming an image with a normal toner and forming an image with special toner, which makes it possible to perform appropriate fixing of a toner to be used according to characteristics of the toner.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: November 16, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Atsumi Kurita, Kunio Yamada, Makoto Hirota, Takashi Yamamuro
  • Publication number: 20040037578
    Abstract: To provide an image forming apparatus capable of forming an image with the normal toner and forming an image with the special toner, which makes it possible to perform appropriate fixing of a toner to be used according to characteristics of the toner.
    Type: Application
    Filed: February 6, 2003
    Publication date: February 26, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsumi Kurita, Kunio Yamada, Makoto Hirota, Takashi Yamamuro
  • Patent number: 5809369
    Abstract: An image processing system integral with an image output unit having a power saving mode comprises a temperature detection section for monitoring a fuser temperature in a power saving mode or a rotation detector for a polygonal motor, a control section for outputting a control signal at a predetermined timing, and an energization control section capable of turning on/off output in response to the control signal from the control section. The timing of a power saving mode off signal output by the control section is when the fuser temperature lowers to a temperature or the polygonal motor take longer to ramp up than the time until the image output unit, after the power saving mode is released, is placed in a reprintable state becomes longer than the time required for setting up the data required when image processing is performed. Thus, the transition time to the copyable state as a whole is used efficiently, and power consumption can be reduced.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: September 15, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Furuya, Katsuyuki Kouno, Mitsuo Shimizu, Seiji Honda, Kouichi Azuma, Izumi Takahashi, Masahiko Miyata, Atsumi Kurita, Jun Kamei, Kenji Suzuki, Nobuyuki Kodera, Fumiya Shiseki