Patents by Inventor Yasufumi Suwabe

Yasufumi Suwabe 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: 20070229393
    Abstract: A writing device constituting an electronic book includes a connector to which electronic papers are detachably connected. The number of connected sheets of electronic paper is recognized, and is output to a host computer. In the host computer, display data is output on the basis of the number of electronic papers, and the display data is written in the electronic papers by a write control unit. When a change of connections of the electronic papers is detected by the detection unit, a part of images displayed on the electronic papers is rewritten depending on the detected connection states of the electronic papers by which optimum images on the electronic papers are displayed even if an arbitrary electronic paper is attached or detached.
    Type: Application
    Filed: May 29, 2007
    Publication date: October 4, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsutomu Ishii, Tsunemasa Mita, Takeshi Matsunaga, Hiroshi Arisawa, Ikutaroh Nagatsuka, Takeo Kakinuma, Yasunari Nishikata, Haruo Harada, Kiyoshi Shigehiro, Yasufumi Suwabe, Yoshinori Machida
  • Publication number: 20070210308
    Abstract: An image display medium includes: a first substrate; a second substrate facing the first substrate; a first bonding layer provided inside at least one of the first substrate and the second substrate; and an insulating layer fixed to the at least one of the first substrate and the second substrate by the first bonding layer, wherein the first bonding layer has a Young's modulus smaller than the substrate formed with the insulating layer and the insulating layer.
    Type: Application
    Filed: September 19, 2006
    Publication date: September 13, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsushi Hirano, Yasufumi Suwabe, Yoshinori Machida, Yoshiro Yamaguchi, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20070188848
    Abstract: An image display medium has: a display substrate that is at least transparent; a back substrate opposing the display substrate with a gap therebetween; at least two or more kinds of moving particle groups that are chargeable and that are different colors, the moving particle groups being enclosed between the display substrate and the back substrate and moving between the substrates in accordance with an electric field formed between the substrates; a transparent liquid for dispersing the moving particles, the transparent liquid being enclosed between the display substrate and the back substrate; and a colored member disposed between the display substrate and the back substrate, and having gaps through which the moving particle groups can move, and being a color that is different from the colors of the moving particle groups.
    Type: Application
    Filed: August 7, 2006
    Publication date: August 16, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Hiroaki Moriyama, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Publication number: 20070188509
    Abstract: The present invention provides an image display medium comprising a pair of substrates at least one of which having translucency, the substrates being disposed opposite to each other with a gap, a dispersion medium which has translucency and is enclosed in a space between the pair of substrates; and plural kinds of particle groups which are movably dispersed in the dispersion medium, move according to an electric field formed, and have different colors and forces for separation from the substrates.
    Type: Application
    Filed: August 29, 2006
    Publication date: August 16, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Kiyoshi Shigehiro, Yasufumi Suwabe, Yoshinori Machida, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano
  • Patent number: 7209112
    Abstract: The image display device has an image display medium comprising a display substrate and a rear substrate having intersecting linear electrodes formed thereon, and containing black and white particles between the display substrate and the rear substrate. An image is displayed at high resolution by controlling a voltage applied to the electrodes.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 24, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takeshi Matsunaga, Yoshinori Machida, Yoshiro Yamaguchi, Yasufumi Suwabe, Motohiko Sakamaki, Kiyoshi Shigehiro
  • Publication number: 20070047003
    Abstract: In an image display apparatus and image display method suppress the degradation of display function and the shortening of service life due to long-term use, measurement of a current value is carried out and the measured current value each time a certain time elapses is stored. The integrated value of the current is calculated, and a comparator compares the integrated value with a reference value stored in a storage section for determining whether or not the result is greater than a prescribed value. If the result is affirmed to differ by prescribed value, a recovery voltage is applied, and it is determined whether or not a recovery time has exceeded a stored recovery time. If the exceedance of the recovery time is affirmed, the application of the recovery voltage is terminated. If a negation is given at the determination of the greater difference value, the flow is ended. If a negation is given at the determination of the recovery time, the recovery voltage is applied.
    Type: Application
    Filed: April 7, 2006
    Publication date: March 1, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasufumi Suwabe, Yoshiro Yamaguchi, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Publication number: 20070046621
    Abstract: An image display device and image display method are provided. The device and method can prevent changes in image density and contrast, which are caused by repeated displaying over long periods of time and changes in environment, by employing accurate electric current detection, due to the following operations. Voltage measurement is initiated with a detection circuit. Next, the application of drive voltage is initiated with a drive power source. An electric current value is calculated from the measured voltage value and the electric current value is temporarily stored. The electric current values are stored every set amount of time and the storage thereof accumulates. Application of the drive voltage is terminated and the integral value of the electric current is calculated in accordance with formulas.
    Type: Application
    Filed: April 7, 2006
    Publication date: March 1, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Yasufumi Suwabe, Yoshiro Yamaguchi, Yoshinori Machida, Motohiko Sakamaki, Atsushi Hirano, Takeshi Matsunaga, Kiyoshi Shigehiro, Shunichiro Shishikura
  • Publication number: 20070031031
    Abstract: An image processing device is provided for processing image data in order to display an image at an image display medium which is capable of displaying white, black, and colors at individual pixels, which are structured by pluralities of sub-pixels. The judgment component acquires the image data and judges whether there is a chromatic color or a non-chromatic color at each pixel. When a pixel is judged to be non-chromatic, the selection component selects a pre-specified black-and-white sub-pixel set in accordance with a gray level of the non-chromatic color. When a pixel is judged to be chromatic, the conversion component converts color data to a sub-pixel set of black and the color in accordance with a pre-specified condition. Of results of conversion, the replacement component replaces a pre-specified sub-pixel set of colors, in an individual pixel or in a pre-specified sub-pixel group, with a pre-specified black-and-white sub-pixel set.
    Type: Application
    Filed: March 28, 2006
    Publication date: February 8, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsushi Hirano, Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20070018945
    Abstract: An image display device is provided. The image display device has: an image display medium where charged particle groups are sealed between a pair of substrates at least one of which has translucency and which are opposed to each other with a space therebetween, and display density is changed by transfer of the charged particle groups between the pair of substrates according to an electric field formed by a voltage applied between the substrates; a temperature measuring unit that measures a temperature of the image display medium; a voltage applying unit that applies, between the substrates, a driving voltage according to the temperature of the image display medium measured by the temperature measuring unit, based on a predetermined voltage applying condition corresponding to the temperature of the image display medium, in order to display an image with predetermined display density on the image display medium.
    Type: Application
    Filed: February 7, 2006
    Publication date: January 25, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Atsushi Hirano, Takeshi Matsunaga, Yasufumi Suwabe, Yoshiro Yamaguchi, Motohiko Sakamaki, Kiyoshi Shigehiro
  • Patent number: 7119787
    Abstract: In an image display device of the present invention, a display substrate has m row electrodes, and a back surface substrate has n column electrodes. The display substrate and the back surface substrate are disposed so as to face one another and such that the electrodes thereof are orthogonal to one another (a simple matrix structure). A top-plane side driving portion is structured by a row electrode driving circuit, a reversing portion, and a reversing switch. When the reversing switch is on, the reversing portion reverses relationships of connection between the row electrode driving circuit and the row electrodes. The backplane side driving portion is structured by a column electrode driving circuit, a reversing portion, and a reversing switch. When the reversing switch is on, the reversing portion reverses relationships of connection between the column electrode driving circuit and the column electrodes.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: October 10, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20060109236
    Abstract: The present invention provides an image display device capable of freely changing a scanning direction of an image display medium including support plates, first and second electrode groups provided at the plates and colored particles provided between the plates, including first and second electrode-driving components which receive electrode-designation signals and apply voltages to the designated electrodes in the first and second electrode groups, and which can apply voltage to plural electrodes simultaneously, a line-image-data generation component which generates line-image-data for line images to be displayed along scan electrodes in accordance with a scanning direction, and a signal-output-destination-switching component, in accordance with the scanning direction, which outputs a first electrode designation signal for designating a scan electrode of a line image and a second electrode designation signal for designating an electrode to be driven for displaying the line image, to the first electrode drivi
    Type: Application
    Filed: July 11, 2005
    Publication date: May 25, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Patent number: 7027029
    Abstract: An image display apparatus has an image display medium and a voltage applying section. The image display medium has a top-plane substrate and a back-plane substrate. The top-plane substrate has a transparent display-side electrode whose entire surface is uniform, formed on a transparent substrate. The back-plane substrate has an inner electrode and an outer electrode, formed on a substrate. Conductive colored particles, whose color is different from a color of the inner electrode, are enclosed between the top-plane substrate and the back-plane substrate. The voltage applying section has a DC power source, a first switch, a second switch, and a control unit. When the color of the inner electrode is displayed, the control unit controls the first switch such that the inner electrode is connected to the DC power source, and controls the second switch such that the outer electrode is grounded. Then, the colored particles move reciprocally and move to the outer electrode.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Patent number: 7002729
    Abstract: A back board has a spacing member having elasticity larger than that of a spacing member formed on a display board, and the spacing member of the back board is joined with the spacing member formed on the display board. Cells are formed between the display board and the back board, and black particles and white particles which are moved by an applied electric field are sealed into the cells. Even when there is variance in heights of the spacing members on the display board and the back board, the spacing member on the back board side is elastically deformed so as to absorb the variance. As a result, the spacing member on the display board is brought into close contact with the spacing member on the back board with certainty, so that the particles sealed into the cells can be prevented from moving between the cells.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: February 21, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Motohiko Sakamaki, Yoshiro Yamaguchi, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Patent number: 6967762
    Abstract: A plurality of cells are set apart by a spacer member between a display plate and a rear face plate. Black particles with positive static charge and white particles with negative static charge are dispersed in a dispersion fluid, which is enclosed in the cells. A red colored layer and electrodes 7a, 7b and 7c are formed at the rear face plate. When a voltage of +50 V is applied to the electrode 7a, 0 V to 7b and ?50 V to 7c, the black particles move to the electrode 7c, the white particles move to the electrode 7a, and red can be viewed. When a voltage of +50 V is applied to the electrode 7a, 0 V to 7b and +50 V to 7c, the white particles move to the electrode 7a, the black particles move to the electrode 7b, and black can be viewed. When a voltage of ?50 V is applied to the electrode 7a, 0 V to 7b and ?50 V to 7c, the black particles move to the electrode 7c, the white particles move to the electrode 7b, and white can be viewed.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: November 22, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Yoshiro Yamaguchi, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Patent number: 6956557
    Abstract: The present invention is for providing an image display device capable of preventing deterioration of display sharpness and contrast, and capable of improving display quality. An image display medium has a display substrate, having a first electrode, disposed on an image display surface side, a rear substrate having a plurality of second electrodes facing the display substrate, and two kinds of particle groups having different colors and charge characteristics sealed between the display substrate and the rear substrate movably between the first electrode and the second electrodes by an electric field. Before application of a display drive voltage for executing the image display, a voltage is applied to the image display medium by a voltage applying component so as to generate an electric field for moving the particle groups between the second electrodes to adjacent the second electrodes.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: October 18, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Takeshi Matsunaga, Kiyoshi Shigehiro, Yoshiro Yamaguchi, Yasufumi Suwabe, Motohiko Sakamaki
  • Patent number: 6879430
    Abstract: An image display medium which implements multi-color display with a small number of kinds of particles and avoids a reduction in resolution of images, and an image writing device. The image display medium has a structure with a transparent display substrate, a colored back substrate, a spacer for constantly maintaining inter-substrate space, and white particles and black particles. The image display device is provided with the image display medium, an electrode head and a voltage application section. The electrode head implements monochrome display by moving the white particles and the black particles one to the display substrate side and the other to the back substrate side, by applying dc voltages between the substrates. When multi-color display is to be implemented, the electrode head applies ac voltages between the substrates and moves the particles to peripheries of portions so as to expose the back substrate at those portions.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: April 12, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Yoshiro Yamaguchi, Takeshi Matsunaga, Motohiko Sakamaki, Kiyoshi Shigehiro
  • Patent number: 6836304
    Abstract: A method of manufacturing an image display medium for encapsulating powdered display elements uniformly between opposed substrates, and an image display medium. Spacer particles are formed in a grid pattern on a first flat substrate pulled out from a first film roll by a first electrostatic application apparatus, and spacers are formed on the first flat substrate by fixing by a first fixer. Then, black particles are applied on the entire surface by a second electrostatic application apparatus, and then white particles are applied on the entire surface by a third electrostatic application apparatus. Subsequently, black particles and white particles are removed from each upper surface of the spacers by a blade, and a second flat substrate pulled out from a second film roll is superimposed thereon, and each upper surface of the spacers is fixed to the second flat substrate by a second fixer.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: December 28, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Motohiko Sakamaki, Yasufumi Suwabe, Kiyoshi Shigehiro, Yoshinori Machida, Takeshi Matsunaga, Yoshiro Yamaguchi, Takeo Kakinuma, Minoru Koshimizu, Shota Oba, Nobuyuki Nakayama
  • Publication number: 20040252362
    Abstract: A back board has a spacing member having elasticity larger than that of a spacing member formed on a display board, and the spacing member of the back board is joined with the spacing member formed on the display board. Cells are formed between the display board and the back board, and black particles and white particles which are moved by an applied electric field are sealed into the cells. Even when there is variance in heights of the spacing members on the display board and the back board, the spacing member on the back board side is elastically deformed so as to absorb the variance. As a result, the spacing member on the display board is brought into close contact with the spacing member on the back board with certainty, so that the particles sealed into the cells can be prevented from moving between the cells.
    Type: Application
    Filed: December 29, 2003
    Publication date: December 16, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Motohiko Sakamaki, Yoshiro Yamaguchi, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20040252361
    Abstract: A plurality of cells are set apart by a spacer member between a display plate and a rear face plate. Black particles with positive static charge and white particles with negative static charge are dispersed in a dispersion fluid, which is enclosed in the cells. A red colored layer and electrodes 7a, 7b and 7c are formed at the rear face plate. When a voltage of +50 V is applied to the electrode 7a, 0 V to 7b and −50 V to 7c, the black particles move to the electrode 7c, the white particles move to the electrode 7a, and red can be viewed. When a voltage of +50 V is applied to the electrode 7a, 0 V to 7b and +50 V to 7c, the white particles move to the electrode 7a, the black particles move to the electrode 7b, and black can be viewed. When a voltage of −50 V is applied to the electrode 7a, 0 V to 7b and −50 V to 7c, the black particles move to the electrode 7c, the white particles move to the electrode 7b, and white can be viewed.
    Type: Application
    Filed: December 12, 2003
    Publication date: December 16, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Yoshiro Yamaguchi, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20040239666
    Abstract: In an image display device of the present invention, a display substrate has m row electrodes, and a back surface substrate has n column electrodes. The display substrate and the back surface substrate are disposed so as to face one another and such that the electrodes thereof are orthogonal to one another (a simple matrix structure). A top-plane side driving portion is structured by a row electrode driving circuit, a reversing portion, and a reversing switch. When the reversing switch is on, the reversing portion reverses relationships of connection between the row electrode driving circuit and the row electrodes. The backplane side driving portion is structured by a column electrode driving circuit, a reversing portion, and a reversing switch. When the reversing switch is on, the reversing portion reverses relationships of connection between the column electrode driving circuit and the column electrodes.
    Type: Application
    Filed: December 10, 2003
    Publication date: December 2, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Kiyoshi Shigehiro