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).

  • Patent number: 7848009
    Abstract: An image display medium includes a pair of substrates, a liquid that is enclosed between the substrates, first colored particles, second colored particles and third colored particles. The first colored particles are colored a first color and move in response to an electric field that is formed between the substrates. The second colored particles are colored a second color and move in an opposite direction of the first colored particles. The third colored particles are colored a third color, are configured to have a particle diameter such that the third colored particles move through clearances between the first colored particles and the second colored particles in a state in which the first colored particles and the second colored particles have aggregated together, and move in response to an electric field that is formed between the substrates.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: December 7, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Hiroaki Moriyama, Yasufumi Suwabe, Masaaki Abe, Satoshi Tatsuura, Yoshinori Yamaguchi, Hiroshi Kayashima, Kiyoshi Shigehiro
  • Patent number: 7746319
    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: Grant
    Filed: July 11, 2005
    Date of Patent: June 29, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshiro Yamaguchi, Yasufumi Suwabe, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Patent number: 7701423
    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: Grant
    Filed: April 7, 2006
    Date of Patent: April 20, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasufumi Suwabe, Yoshiro Yamaguchi, Yoshinori Machida, Motohiko Sakamaki, Atsushi Hirano, Takeshi Matsunaga, Kiyoshi Shigehiro, Shunichiro Shishikura
  • Patent number: 7671835
    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 excedance 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: Grant
    Filed: April 7, 2006
    Date of Patent: March 2, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasufumi Suwabe, Yoshiro Yamaguchi, Yoshinori Machida, Motohiko Sakamaki, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Patent number: 7656576
    Abstract: A display medium includes at least: a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, included in the dispersion medium; and a holder disposed between the pair of substrates, the holder having a function of holding the electrophoretic particles and a function of controlling, by an external voltage, a movement amount of the electrophoretic particles on the holder.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: February 2, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasufumi Suwabe, Yoshinori Machida, Kiyoshi Shigehiro, Satoshi Tatsuura, Masaaki Abe
  • Publication number: 20100020384
    Abstract: An image display medium includes a pair of substrates, a liquid that is enclosed between the substrates, first colored particles, second colored particles and third colored particles. The first colored particles are colored a first color and move in response to an electric field that is formed between the substrates. The second colored particles are colored a second color and move in an opposite direction of the first colored particles. The third colored particles are colored a third color, are configured to have a particle diameter such that the third colored particles move through clearances between the first colored particles and the second colored particles in a state in which the first colored particles and the second colored particles have aggregated together, and move in response to an electric field that is formed between the substrates.
    Type: Application
    Filed: December 24, 2008
    Publication date: January 28, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori MACHIDA, Hiroaki MORIYAMA, Yasufumi SUWABE, Masaaki ABE, Satoshi TATSUURA, Yoshinori YAMAGUCHI, Hiroshi KAYASHIMA, Kiyoshi SHIGEHIRO
  • Patent number: 7649204
    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: Grant
    Filed: September 19, 2006
    Date of Patent: January 19, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Atsushi Hirano, Yasufumi Suwabe, Yoshinori Machida, Yoshiro Yamaguchi, Takeshi Matsunaga, Kiyoshi Shigehiro
  • Publication number: 20090255985
    Abstract: A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.
    Type: Application
    Filed: June 12, 2009
    Publication date: October 15, 2009
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Ikutaroh Nagatsuka, Yasunori Saito, Minoru Koshimizu, Daisuke Tsuda, Tsunemasa Mita, Tsutomu Ishii, Kiyoshi Shigehiro, Takeshi Matsunaga, Takeo Kakinuma, Yoshinori Machida, Yasufumi Suwabe, Hiroshi Arisawa, Yasunari Nishikata, Haruo Harada
  • Patent number: 7578429
    Abstract: A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: August 25, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ikutaroh Nagatsuka, Yasunori Saito, Minoru Koshimizu, Daisuke Tsuda, Tsunemasa Mita, Tsutomu Ishii, Kiyoshi Shigehiro, Takeshi Matsunaga, Takeo Kakinuma, Yoshinori Machida, Yasufumi Suwabe, Hiroshi Arisawa, Yasunari Nishikata, Haruo Harada
  • Patent number: 7499211
    Abstract: The present invention provides a display medium, comprising: a display medium, comprising: a pair of substrates, at least one of the pair of substrates having transparency; a particle group enclosed between the pair of substrates, the particle group migrating between the pair of substrates in response to an electric field formed between the pair of substrates; a dispersion medium that is enclosed between the pair of substrates and disperses the particle group; a porous member disposed between the pair of substrates and having a plurality of pores that allow passage of the particle group; and embedded members that partition the porous member into specific regions and that are embedded inside at least a part of the pores in the porous member that are present along the direction in which the pair of substrates are opposed.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: March 3, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasufumi Suwabe, Satoshi Tatsuura, Yoshinori Machida, Masaaki Abe, Kiyoshi Shigehiro
  • Publication number: 20090046053
    Abstract: An image display medium including a pair of substrates, a dispersion medium, and particles of two or more kinds, the particles of each kind being able to move in the dispersion medium in response to an electric field formed between the substrates, each kind of particles having a different color and a different absolute value of a voltage for moving, the voltage for moving being determined from a difference between an electrostatic force that acts on the particles in response to the electric field formed between the substrates and a binding force that acts in a direction of retaining the particles in a state that the particles are in before the electrostatic force acts on the particles, and at least one of an intensity of the binding force and an intensity of the electrostatic force for the particles of each kind being different.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 19, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kiyoshi SHIGEHIRO, Yoshinori MACHIDA, Yasufumi SUWABE, Satoshi TATSUURA, Masaaki ABE, Ryojiro AKASHI, Daisuke NAKAYAMA
  • Publication number: 20080303778
    Abstract: There is provided an image display medium that includes: a pair of substrates at least one of that is light-transmissive; a liquid enclosed between the substrates; and three or more types of colored particles dispersed in the liquid that move in accordance with electric fields applied between the substrates and have different colors and charge characteristics, wherein at least one type of the colored particles has an opposite polarity from at least one other type of colored particles.
    Type: Application
    Filed: February 20, 2008
    Publication date: December 11, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori MACHIDA, Kiyoshi SHIGEHIRO, Yasufumi SUWABE, Satoshi TATSUURA, Masaaki ABE
  • Publication number: 20080303779
    Abstract: An image display medium including a pair of substrates, a transparent dispersion medium, one or more kind of colored particles and larger sized colored particles. The pair of substrates is disposed with a separation therebetween and at least one of the pair of substrates is transparent. The dispersion medium is transparent and enclosed between the pair of substrates. Each kind of the colored particles is colored a predetermined color, is dispersed in the dispersion medium, has predetermined charge characteristics or predetermined magnetic properties, and is able to migrate between the pair of substrates. The larger sized colored particles have a different color and a larger particle size than the colored particles, are disposed so that the colored particles are able to pass through the separation, have charge characteristics or magnetic properties which are different from those of the colored particles, and are able to move.
    Type: Application
    Filed: February 21, 2008
    Publication date: December 11, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Satoshi Tatsuura, Masaaki Abe, Kiyoshi Shigehiro
  • Patent number: 7414777
    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: Grant
    Filed: August 7, 2006
    Date of Patent: August 19, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Hiroaki Moriyama, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
  • Publication number: 20080151355
    Abstract: The present invention provides a display medium, comprising: a display medium, comprising: a pair of substrates, at least one of the pair of substrates having transparency; a particle group enclosed between the pair of substrates, the particle group migrating between the pair of substrates in response to an electric field formed between the pair of substrates; a dispersion medium that is enclosed between the pair of substrates and disperses the particle group; a porous member disposed between the pair of substrates and having a plurality of pores that allow passage of the particle group; and embedded members that partition the porous member into specific regions and that are embedded inside at least a part of the pores in the porous member that are present along the direction in which the pair of substrates are opposed.
    Type: Application
    Filed: June 14, 2007
    Publication date: June 26, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasufumi Suwabe, Satoshi Tatsuura, Yoshinori Machida, Masaaki Abe, Kiyoshi Shigehiro
  • Publication number: 20080117165
    Abstract: A display device includes: a display medium including a pair of substrates disposed with a distance therebetween, at least one of the substrates having translucency, a dispersion medium that is disposed between the pair of substrates, and a particle group that is dispersed in the dispersion medium and moved in the dispersion medium according to an electric field formed by applying a voltage exceeding a predetermined threshold voltage between the pair of substrates; a voltage applying unit that applies a voltage between the pair of substrates; and a control unit that controls the voltage applying unit. The control unit controls the voltage applying unit so as to apply a first voltage exceeding the threshold voltage between the pair of substrates, then to apply a voltage equal to or lower in magnitude than the threshold voltage but having a polarity that is the reverse to the polarity of the first voltage.
    Type: Application
    Filed: May 23, 2007
    Publication date: May 22, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Kiyoshi Shigehiro, Satoshi Tatsuura, Masaaki Abe
  • Publication number: 20080112040
    Abstract: A display medium includes at least: a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, included in the dispersion medium; and a holder disposed between the pair of substrates, the holder having a function of holding the electrophoretic particles and a function of controlling, by an external voltage, a movement amount of the electrophoretic particles on the holder.
    Type: Application
    Filed: June 4, 2007
    Publication date: May 15, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasufumi Suwabe, Yoshinori Machida, Kiyoshi Shigehiro, Satoshi Tatsuura, Masaaki Abe
  • Publication number: 20080036731
    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 16, 2007
    Publication date: February 14, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kiyoshi Shigehiro, Yasufumi Suwabe, Yoshinori Machida, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano
  • Patent number: 7319554
    Abstract: The invention provides a display medium including: a pair of substrates facing one another, at least one of the substrates being transparent; electrodes provided at opposing surfaces of the pair of substrates; and a light modulating layer disposed between the pair of substrates, the light modulating layer containing electrophoretic colored particles, a dispersion medium for dispersing the electrophoretic colored particles, and a reflection member having light reflection characteristics different from those of the electrophoretic colored particles, and the surface of the electrophoretic colored particles and the surface of the reflection member satisfying the following formula (1): 180>|?p??r|?20, in formula (1), ?p representing a contact angle (degrees) between the surface of the electrophoretic colored particles and water, and ?r representing a contact angle (degrees) between the surface of the reflection member and water.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: January 15, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masaaki Abe, Hiroaki Moriyama, Yasuo Yamamoto, Yasufumi Suwabe, Yoshinori Machida, Kiyoshi Shigehiro
  • Publication number: 20070236448
    Abstract: There is provided a driving device for an image display medium that drives the image display medium including: a display substrate; a back surface substrate; plural first electrodes; plural second electrodes; and particles enclosed between the display substrate and the back surface substrate so as to move according to an electric field generated between the substrates by applying a voltage corresponding to an image between the first and second electrodes; the driving device including: a voltage application section that applies the voltage corresponding to an image between the first and second electrodes, the voltage application section, as a display drive voltage to be applied for each pixel to display a desired color at each pixel, applying a first pulse voltage that can cause the particles in a stationary state to start moving and thereafter applying a second pulse voltage that can cause the particles that have started moving to move.
    Type: Application
    Filed: November 15, 2006
    Publication date: October 11, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Machida, Yasufumi Suwabe, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro