Patents by Inventor Haruo Harada

Haruo Harada 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: 7570310
    Abstract: A method drives a spatial light modulation device to record an image into the device. The device includes first and second light modulation layers. The method includes exposing the device to imagewise light while applying a first voltage between electrodes of the first light modulation layer. If the second light modulation layer has such a characteristic that a curve of an intensity of light, which has the same wavelength as the imagewise light and is applied to the second light modulation layer, versus a reflectivity of the second light modulation layer after finishing applying the light has a local maximum point, an intensity of the imagewise light in the exposing is larger than an intensity, which the curve has at the local maximum point, and in the exposing, the second light modulation layer has a reflectivity lower than a reflectivity, which the curve has at the local maximum point.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: August 4, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasunori Okano, Makoto Gomyou, Taiju Gan
  • Patent number: 7511775
    Abstract: An optical address type spatial light modulator has a plurality of optical address type light modulation layers stacked on each other, each having a liquid crystal layer for reflecting visible light in a specific wavelength band or a liquid crystal layer for absorbing visible light in a specific wavelength band and coloring and a photoconductive layer for absorbing the visible light in the specific wavelength band and changing the resistance value in response to the light intensity of the visible light absorbed, the liquid crystal layer and the photoconductive layer being stacked on each other between electrodes.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: March 31, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Hideo Kobayashi, Takeo Kakinuma, Minoru Koshimizu
  • Publication number: 20090040297
    Abstract: The present invention is an display apparatus including: a display portion 100 that displays individual images IM1 and IM2 on the same screen; and a display control portion 10 that adjusts image quality of the individual images IM1 and IM2 as output conditions thereof to control visible ranges of the individual images IM1 and IM2. According to the present invention, the visible ranges can be changed by adjusting the image quality of the individual images IM1 and IM2. Therefore, it is possible to optimize the visible ranges of the individual images IM1 and IM2, and improve the visibility of the images in a multi-view display without changing the configuration of the display portion 100 composed of the multi-view display.
    Type: Application
    Filed: August 30, 2006
    Publication date: February 12, 2009
    Applicant: FUJITSU TEN LIMITED
    Inventors: Haruo Harada, Shogo Tanaka, Ichiro Enomoto, Teruomi Kuwano, Kenji Nakata, Katsuyuki Maekawa, Yoshihisa Mizuno
  • Publication number: 20090002274
    Abstract: An optically writable display medium, which includes a display layer, a photoconductor layer and a pair of electrodes, is provided. The display layer is capable of selectively reflecting incident light in response to an applied voltage and it has memory capability. Electrical resistance of the photoconductor layer changes in response to writing light with which the photoconductor layer is irradiated. The pair of electrodes are disposed such that the display layer and the photoconductor layer are interposed therebetween, with at least one of the electrodes having plural segmented electrodes juxtaposed along a predetermined direction. Each power receiving terminal of the plural segmented electrodes is disposed such that part of a region of the power receiving terminal of each segmented electrode overlaps, in the predetermined direction, but does not contact part of a region of the power receiving terminal of the segmented electrode that is adjacent thereto.
    Type: Application
    Filed: February 27, 2008
    Publication date: January 1, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Minoru KOSHIMIZU, Tsutomu ISHII, Naoki HIJI, Yasunori SAITO, Haruo HARADA, Masahiro SATO
  • Publication number: 20080239174
    Abstract: An optical recording apparatus and a method of optical recording are disclosed in which: a DC voltage of a first polarity is applied, as a reset voltage for initializing a display layer, to one of a plurality of divided electrodes which is selected in a predetermined sequence along a specified direction, and reset light is irradiated onto a photoconductor layer in a region corresponding to the selected divided electrode; and a DC voltage of a second polarity opposite to the first polarity is applied, as an image writing voltage for writing an image in the display layer, to the selected divided electrode, and image light corresponding to input image information is irradiated onto the photoconductor layer in the region corresponding to the selected divided electrode. Also disclosed is an image display apparatus including the optical recording apparatus.
    Type: Application
    Filed: October 10, 2007
    Publication date: October 2, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsutomu Ishii, Minoru Koshimizu, Naoki Hiji, Yasunori Saito, Haruo Harada, Masahiro Sato
  • Publication number: 20080192157
    Abstract: A method for driving a light modulation element includes: applying light to the light modulation element in accordance with an image to be displayed on the light modulation element while applying a DC voltage between a pair of electrode layers of the light modulation element; and applying a pulse voltage having an opposite polarity to the DC voltage applied so far between the pair of electrode layers with the light being applied, and terminating the applying of the light when the applying of the pulse voltage is terminated. The applying of the light, the applying of the pulse voltage and the terminating of the applying of the light are executed sequentially.
    Type: Application
    Filed: September 5, 2007
    Publication date: August 14, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Taijyu Gan, Hiroshi Arisawa, Haruo Harada, Chisato Urano, Makoto Gomyo, Yasunori Okano
  • Publication number: 20080180583
    Abstract: A driving apparatus includes a voltage applying unit, a light irradiation unit and a resistance control unit. The voltage applying unit forms a voltage applying circuit together with a pair of electrode layers of a photo-addressing type display element. The voltage applying unit applies a voltage between the pair of electrode layers. The light irradiation unit irradiates the photo-addressing type display element with addressing light. The resistance control unit controls a resistance to a current which flows in a direction to reduce a potential difference between the pair of electrode layers to be larger than that during a period in which the voltage applying unit is applying the voltage.
    Type: Application
    Filed: October 3, 2007
    Publication date: July 31, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasuhiro Yamaguchi, Tomozumi Uesaka, Tsutomu Ishii, Masahiro Sato
  • Publication number: 20080123179
    Abstract: A laminated body comprises: a particle dispersion layer comprising a first material and particles dispersed in the first material, the first material being changed from a gel state to a sol state upon increase in temperature; and a coated layer comprising a second material, the second material is changed from a gel state to a sol state upon increase in temperature, is changed from a gel state to a sol state upon decrease in temperature, and shows a hysteresis behavior in sol-gel change upon change in temperature, wherein the particle dispersion layer in a sol state and the coated layer in a gel state are laminated in contact with each other, and in a state where each of the particle dispersion layer and the coated layer contains a solvent, a maximum temperature T1 where the first material maintains a gel state is less than a maximum temperature T2 where the second material maintains a gel state upon increase in temperature (T1<T2).
    Type: Application
    Filed: June 6, 2007
    Publication date: May 29, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo Harada, Makoto Gomyo, Yasunori Okano, Taijyu Gan, Chisato Urano, Hiroshi Arisawa
  • Publication number: 20080117380
    Abstract: The invention discloses a liquid crystal display element including: a pair of display substrates each having a support and an electrode provided on one surface of the support; and a display layer provided between the electrodes of the pair of display substrates, wherein the display layer contains gelatin and liquid crystal drops or microcapsules; and the liquid crystal drops or microcapsules are densely arrayed in a monolayer, and a method of manufacturing the liquid crystal display element, including: applying to a surface of one of the display substrates which surface has the electrode, a coating solution in which liquid crystal drops or microcapsules are dispersed in a solution containing gelatin and a solvent, thereby forming a coating layer; and evaporating the solvent in the coating layer at a temperature not less than the freezing point of the gelatin to provide a display layer between the electrodes of the display substrates.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 22, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo Harada, Hiroshi Arisawa
  • Publication number: 20070290975
    Abstract: A method for driving a reflective liquid crystal display having a selective reflection layer to record an image on the reflective liquid crystal display is provided. The method includes: selectively applying two or more kinds of voltages, which includes a voltage V1H exceeding an operation threshold value of the selective reflection layer and a voltage V1L not exceeding the operation threshold value of the selective reflection layer, to the selective reflection layer for a period of time TV1, so as to select, in the selective reflection layer, an area where the operation threshold value is exceeded and other area where the operation threshold value is not exceeded; and applying a voltage V2 to the selective reflection layer, the voltage V2 having a frequency differing from that of the voltages V1H and V1L.
    Type: Application
    Filed: November 29, 2006
    Publication date: December 20, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Taijyu Gan, Hiroshi Arisawa, Haruo Harada, Yasunori Okano, Makoto Gomyo, Masahiro Sato
  • Publication number: 20070268416
    Abstract: A method for driving a liquid crystal device to record an image on the liquid crystal device is provided. The liquid crystal device has: a pair of electrodes; and a liquid crystal layer of cholestric liquid crystal sandwiched between the pair of electrodes. The method includes: applying a voltage V1 higher than a threshold value of a phase change to the homeotropic phase to make the liquid crystal layer to be in a homeotoropic phase; applying selectively two voltages V2H and V2L higher than the voltage V1 to each portion of the liquid crystal layer; and applying a voltage V3 under a condition of such a magnification and application time that a portion to which the voltage V2H has been applied changes to a planar phase and a portion to which the voltage V2L has been applied changes to a focal conic phase.
    Type: Application
    Filed: November 13, 2006
    Publication date: November 22, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasunori Okano, Makoto Gomyo, Taijyu Gan, Masahiro Sato
  • 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: 20070115398
    Abstract: An optical address type spatial light modulator has a plurality of optical address type light modulation layers stacked on each other, each having a liquid crystal layer for reflecting visible light in a specific wavelength band or a liquid crystal layer for absorbing visible light in a specific wavelength band and coloring and a photoconductive layer for absorbing the visible light in the specific wavelength band and changing the resistance value in response to the light intensity of the visible light absorbed, the liquid crystal layer and the photoconductive layer being stacked on each other between electrodes.
    Type: Application
    Filed: January 17, 2007
    Publication date: May 24, 2007
    Applicant: FUJI XEROX., LTD.
    Inventors: Haruo Harada, Hiroshi Arisawa, Hideo Kobayashi, Takeo Kakinuma, Minoru Koshimizu
  • Publication number: 20070085788
    Abstract: A method drives a spatial light modulation device to record an image into the device. The device includes first and second light modulation layers. The method includes exposing the device to imagewise light while applying a first voltage between electrodes of the first light modulation layer. If the second light modulation layer has such a characteristic that a curve of an intensity of light, which has the same wavelength as the imagewise light and is applied to the second light modulation layer, versus a reflectivity of the second light modulation layer after finishing applying the light has a local maximum point, an intensity of the imagewise light in the exposing is larger than an intensity, which the curve has at the local maximum point, and in the exposing, the second light modulation layer has a reflectivity lower than a reflectivity, which the curve has at the local maximum point.
    Type: Application
    Filed: July 12, 2006
    Publication date: April 19, 2007
    Applicant: FUJI XEROX CO., LTD
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasunori Okano, Makoto Gomyou, Taiju Gan
  • Publication number: 20070076135
    Abstract: The present invention provides a light modulation element in which a visible image is written by simultaneously conducting irradiation of the light modulation element with exposure light according to image information which corresponds to the visible image and application of a voltage, having: a pair of electrodes to which the voltage is applied; a photoconductive layer which, when the light modulation element has been irradiated with the exposure light, shows an electric characteristic distribution corresponding to the intensity distribution of the exposure light; a liquid crystal layer to which a partial voltage derived from the voltage applied to the pair of electrodes and having a distribution corresponding to the electric characteristic distribution of the photoconductive layer is applied to record a visible image having an optical characteristic distribution corresponding to the distribution of the partial voltage; and a light shielding layer disposed between the photoconductive layer and the liquid cry
    Type: Application
    Filed: June 7, 2006
    Publication date: April 5, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Makoto Gomyou, Haruo Harada, Yasunori Okano, Taijyu Gan, Hiroshi Arisawa
  • Patent number: 7190417
    Abstract: An optical address type spatial light modulator has a plurality of optical address type light modulation layers stacked on each other, each having a liquid crystal layer for reflecting visible light in a specific wavelength band or a liquid crystal layer for absorbing visible light in a specific wavelength band and coloring and a photoconductive layer for absorbing the visible light in the specific wavelength band and changing the resistance value in response to the light intensity of the visible light absorbed, the liquid crystal layer and the photoconductive layer being stacked on each other between electrodes.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: March 13, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Hideo Kobayashi, Takeo Kakinuma, Minoru Koshimizu
  • Publication number: 20070046595
    Abstract: A driving method of a stacked light modulating device for recording an image therein, which includes selective reflection layers each having a cholesteric liquid crystal, reflecting light with different wavelengths within a visible range, and being different in a lower threshold value of texture change from a planar to a focal conic texture with respect to an externally applied voltage and an upper threshold value of texture change from the focal conic to a homeotropic texture, and a pair of electrodes disposed outside, includes applying between the pair of electrodes voltages including a voltage V1 and have a same frequency, to select an area exceeding or not exceeding the upper threshold value in each of the selective reflection layers, and applying voltages including a voltage V2 and have a same frequency different from the voltage V1, to select an area exceeding or not exceeding the lower threshold value.
    Type: Application
    Filed: March 21, 2006
    Publication date: March 1, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Taijyu Gan, Haruo Harada, Yasunori Okano, Makoto Gomyou, Hiroshi Arisawa
  • Publication number: 20070008262
    Abstract: A driving method of a liquid crystal device for recording an image, the liquid crystal device including a liquid crystal layer having a cholesteric liquid crystal, a photoconductor layer accumulated on the liquid crystal layer, and electrodes, includes initializing an entire liquid crystal layer to a focal conic texture by applying a voltage exceeding a threshold value of transition from a planar texture to a focal conic texture, exposing the liquid crystal device imagewise while applying a voltage not exceeding a threshold value from the focal conic texture to a homeotropic texture upon non-exposure but exceeding the threshold value upon exposure and that provides bistability of the focal conic texture and the homeotropic texture with hysteresis upon non-exposure, and fixing a displayed image by releasing an application of voltage to change a part of the liquid crystal layer changed to the homeotropic texture to the planar texture.
    Type: Application
    Filed: January 30, 2006
    Publication date: January 11, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasunori Okano, Makoto Gomyou, Taijyu Gan
  • Publication number: 20050200775
    Abstract: The invention discloses a liquid crystal display element including: a pair of display substrates each having a support and an electrode provided on one surface of the support; and a display layer provided between the electrodes of the pair of display substrates, wherein the display layer contains gelatin and liquid crystal drops or microcapsules; and the liquid crystal drops or microcapsules are densely arrayed in a monolayer, and a method of manufacturing the liquid crystal display element, including: applying to a surface of one of the display substrates which surface has the electrode, a coating solution in which liquid crystal drops or microcapsules are dispersed in a solution containing gelatin and a solvent, thereby forming a coating layer; and evaporating the solvent in the coating layer at a temperature not less than the freezing point of the gelatin to provide a display layer between the electrodes of the display substrates.
    Type: Application
    Filed: September 14, 2004
    Publication date: September 15, 2005
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Haruo Harada, Hiroshi Arisawa
  • Patent number: 6882401
    Abstract: A light modulation medium comprises a light modulation element having a pair of substrates and plural light modulation layers arranged between the substrates to form a multilayer structure and made of cholesteric liquid crystal adapted to change the liquid crystal orientation in response to application of a predetermined electric field, in which the ratio of the threshold electric field at which the liquid crystal orientation is moved from a planar state to a focal conic state of a first light modulation layer of the light modulation element to that of a second light modulation layer is not less than 0.3 and the ratio of the dielectric constant in a planar state of liquid crystal orientation of the first light modulation layer to that of the second light modulation layer is not less than 4.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: April 19, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa