Patents by Inventor Itsuo Takanashi

Itsuo Takanashi 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: 5894359
    Abstract: A color filter includes a plurality of color pixels, and a first hologram diffracting an incident light beam into a first diffraction-resultant light beam. The color filter also includes a second hologram diffracting the first diffraction-resultant light beam into a second diffraction-resultant light beam having a plurality of light beams with different wavelengths respectively. The second hologram directs the different wavelength light beams toward the color pixels respectively.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: April 13, 1999
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Tetsuji Suzuki, Hirofumi Imaoka, Itsuo Takanashi, Shintaro Nakagaki
  • Patent number: 5565882
    Abstract: An image processing system for an image display comprising an image data producing device for producing image data corresponding to an image to be displayed and a display device for displaying the image on the basis of the produced image data. The image data producing device divides the image data into a plurality of data sections respectively corresponding to image areas constituting the image so that each of the plurality of data sections is produced as serial data and the plurality of data sections are outputted in parallel. The display device includes a number of pixel elements continuously arranged one-dimensionally or two-dimensionally and equally divided into a plurality of element sections respectively corresponding to the plurality of data sections.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: October 15, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Ichiro Negishi, Tetsuji Suzuki, Fujiko Tatsumi, Ryusaku Takahashi, Keiichi Maeno
  • Patent number: 5502490
    Abstract: A display unit includes a light-emitting element array having a plurality of linearly arranged light-emitting elements drivable by a time sequential image information signal to emit beams of light in accordance with pieces of information allotted to the corresponding picture elements, a deflector such as a polygon mirror for deflecting the light beams simultaneously in a direction perpendicular to the longitudinal direction of the light-emitting element array, and a light-to-light conversion element including a photoconductive layer and a photo-modulation layer, the light beams being imaged on the photoconductive layer.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 26, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Ichiro Negishi, Tetsuji Suzuki, Fujiko Tatsumi, Ryusaku Takahashi, Keiichi Maeno
  • Patent number: 5463468
    Abstract: A display unit includes a light-emitting element array having a plurality of linearly arranged light-emitting elements drivable by a time sequential image information signal to emit beams of light in accordance with pieces of information allotted to the corresponding picture elements, a deflector such as a polygon mirror for deflecting the light beams simultaneously in a direction perpendicular to the longitudinal direction of the light-emitting element array, and a light-to-light conversion element including a photoconductive layer and a photo-modulation layer, the light beams being imaged on the photoconductive layer.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: October 31, 1995
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Ichiro Negishi, Tetsuji Suzuki, Fujiko Tatsumi, Ryusaku Takahashi, Keiichi Maeno
  • Patent number: 5430705
    Abstract: In an information recording apparatus, light containing information to be recorded is generated, and a photo-to-electric converting device serves to convert the light into a charge latent image. The photo-to-electric converting device includes a photoconductive member exposed to the light. Information corresponding to the charge latent image is recorded on a recording medium. A first recording device serves to record main information on a first region of the recording medium. A second recording device separate from the first recording device serves to record sub information on a second region of the recording medium. The second region is different from the first region.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: July 4, 1995
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5422663
    Abstract: An image formation apparatus using a recording medium including a scattering-mode light-modulation member which takes an opaque state in response to a heat and takes a transparent state in response to an electric field. The apparatus comprises an electrode device disposed in opposed relation to the recording medium and a charge removal device facing or in contact with the recording medium. The electrode device applies an electric field to the recording medium thereby completely erasing an image previously recorded in the recording medium and the charge removal device removes charge left in the recording medium due to application of the electric field by the electrode device. After the erasure, the recording medium is heated by a thermal head in accordance with an information signal from an external device so as to form a new image in the recording medium.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: June 6, 1995
    Assignee: Victor Company Of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Yoshihisa Koyama, Hiroyuki Bonde
  • Patent number: 5408341
    Abstract: A system has a first electrode, a second electrode, a photosensitive member located between the first and second electrodes, a recording member located between the first and second electrodes, and an optical shutter. In this system, light having information to be recorded is applied to the photosensitive member. The light information is recorded on the recording member. An exposure amount of the light with respect to the photosensitive member is set by setting a time during which the optical shutter remains open. A drive voltage of a predetermined variation is applied between the first and second electrodes during the recording of the light information on the recording member. The predetermined voltage between the first and second electrodes is controlled in response to a sensed intensity of reference light which passes through the photo-modulation member.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: April 18, 1995
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5367359
    Abstract: A plate-making apparatus equipped with an optical system and a light-light transforming device comprising a photoconductive layer and a light-modulation layer which are in confronting relation to each other and which are interposed between a pair of electrodes. The optical system supplies optical information to the photoconductive layer, and the pair of electrodes are for generating an electric field therebetween to be applied to the photosensitive layer and the light-modulation layer. Also included in the apparatus for emitting light having a predetermined wavelength, the light being led to the light-modulation layer to generate reflection light therefrom which is modulated in correspondance with the optical information supplied from the optical system to the photoconductive layer. The reflection light is arranged so as to illuminate a photosensitive resin layer, which is in turn denatured or hardened in response to the illumination so as to produce a print plate.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: November 22, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5342132
    Abstract: The present invention discloses a method for thermally transferring an ink pattern to a recording medium, comprising the steps of preparing an ink sheet provided with a hot-melt and/or hot-sublimable ink layer and a transparent material sheet provided with a transparent hot-melt material layer, thermally producing an ink pattern on the transparent material layer of the transparent material sheet by heating the ink sheet with thermal head, and thermally transferring the ink pattern to the recording medium together with the transparent hot-melt material layer.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: August 30, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hideshi Tanaka, Itsuo Takanashi, Shigeaki Tada, Toshinori Takahashi
  • Patent number: 5337078
    Abstract: An apparatus for recording information carried by an electro-magnetic radiation beam. The apparatus has a recording unit having two electrodes, a photoconductive member and a recording member of liquid crystals capable of holding electric charges, the members being arranged so as to face each other between the electrodes. An electro-magnetic radiation beam carrying information to be recorded is directed to the photoconductive member under presence of a voltage across the electrodes. An electric field corresponding to a conductivity variation of the photoconductive member according to the information is thus applied to the recording member to form a charge latent image corresponding to the information on the recording member. The recording member is then heated so that an intensity of the applied electric field exceeds a specific threshold level at which an optical characteristic of the liquid crystal begins to vary according to the charge latent image.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: August 9, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5319391
    Abstract: A thermal printing apparatus for printing input gradational images, characters and figures by using multilevel density which can appropriately regulate the levels of the densities representing the gradational images etc.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: June 7, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Toshinori Takahashi, Itsuo Takanashi, Hideshi Tanaka, Terumi Ohara, Kenichi Miyazaki, Hiroki Kitamura, Toru Nibe, Tadao Shinya, Yutaka Mizoguchi, Katsuhiko Terada
  • Patent number: 5319461
    Abstract: A recording medium is formed by laminating a first transparent electrode, a photoconductive layer member, a recording member and a second transparent electrode in order. The recording medium has voltage supply members, having a conductive material, being provided to peripheral portions of the electrodes, equalizing electric potentials of the peripheral portions respectively when a specific voltage is applied across the electrodes, to make currents flow from the peripheral portions to respective portions of the electrodes, thus a potential difference between the electrodes, thus a potential difference between the electrodes being constant. There is also a recording medium having first and second transparent electrodes, a photoconductive layer member and a recording member.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: June 7, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5315318
    Abstract: An image formation apparatus using a recording medium including a scattering-mode light-modulation member which takes an opaque state in response to a heat and takes a transparent state in response to an electric field. The apparatus comprises a heater and an electrode device which are disposed in opposed relation to the recording medium. The heater preheats the recording medium in accordance with a control signal from an external device and the electrode device applies an electric field to the recording medium after the heating, thereby completely erasing an image previously recorded in the recording medium. After the erasure, the recording medium is heated by a thermal head in accordance with an information signal from an external device so as to form a new image in the recording medium.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: May 24, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Yoshihisa Koyama, Hiroyuki Bonde
  • Patent number: 5313288
    Abstract: A recording medium has first and second transparent electrodes, a photoconductive layer member and a photomodulation member. The recordingmedium also has a first lamination member having a first substrate on which the first transparent electrode and the photoconductive layer member are laminated in order, a second lamination member having a second transparent substrate on which the second transparent electrode and the photomodulation layer member are laminated in order and coupling members for unifying the first and second lamination members together with a gap of specific width in such a manner that the photoconductive and photomodulation layer members face each other.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: May 17, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yoshihisa Koyama, Yuji Uchiyama
  • Patent number: 5308724
    Abstract: There is provided a photosensitive medium for recording a charge latent image, composed of a photo-conductive layer having an electrode and a protective layer at each surface thereof. There is further provided a charge latent image recording method. A photo-conductive layer and a charge holding layer, each having an electrode at a surface thereof, are arranged to face each other through a gap. A predetermined voltage is applied across the photo-conductive layer and the charge holding layer through the electrodes to cause discharge thereacross. At the time, an electro-magnetic wave corresponding to the charge latent image intended to be recorded is emitted to the photo-conductive layer. The impedance of the photo-conductive layer is thus varied to record the charge latent image on the charge holding layer.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: May 3, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Hirohiko Shinonaga, Tsutou Asakura, Masato Furuya, Tetsuji Suzuki
  • Patent number: 5300351
    Abstract: A heat-sensitive hot-melt image transfer sheet transfers an ink image to a recording sheet when selectively heated by the heating element of the thermal head of a thermal printer. The image transfer sheet comprises a base coated on a surface thereof with a matrix of circular hot-melt ink dots at a constant pitch. The hot-melt ink dots are selectively meltable with heat applied through the base by the heating elements for transferring an ink image to the recording sheet held against the matrix of hot-melt ink dots.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: April 5, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Toshinori Takahashi, Itsuo Takanashi, Hideshi Tanaka, Hiroki Kitamura, Toru Nibe, Tadao Shinya, Yutaka Mizoguchi, Katsuhiko Terada, Toshinori Takahashi, Itsuo Takanashi
  • Patent number: 5299153
    Abstract: A system for recording and reproducing a charge latent image in a recording medium has a transparent electrode (3), a photoconductive layer (4) on the electrode (3), a dielectric layer (8), a photoconductor layer (4) and a charge transfer suppressive layer (16). The system also includes a biasing element including a pair of electrodes (3, 19), a power source (10) for applying an electric field between the pair of electrodes, and an optical system (1) for directing an electro-magnetic radiation beam from an object (0) thereby forming an image thereof in the photoconductive layer (4).
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: March 29, 1994
    Assignee: Victor Company Of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Hirohiko Shinonaga, Tsutou Asakura, Masato Furuya, Hiromichi Tai, Tetsuji Suzuki
  • Patent number: 5299042
    Abstract: A display unit which can be used with various sources of information includes a light-to-light conversion element composed of first and second stripe electrodes arranged to jointly form a matrix electrode, and a photoconductive layer and a light modulation layer disposed between the first and second stripe electrodes, the impedance of the photoconductive layer changes with information written to the light-to-light conversion element. The photoconductive layer is irradiated with a linear light beam deflected in a direction to intersect first stripe electrode, while at the same time successive pieces of information to be inputted to corresponding picture elements are supplied to respective stripe electrode elements of the first stripe electrode. With the use of the matrix electrode, information can be written to and read out from the light-to-light conversion element at a higher response rate with high resolution.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: March 29, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Ichiro Negishi, Tetsuji Suzuki, Fujiko Tatsumi, Ryusaku Takahashi
  • Patent number: RE37726
    Abstract: The present invention discloses a method for thermally transferring an ink pattern to a recording medium, comprising the steps of preparing an ink sheet provided with a hot-melt and/or hot-sublimable ink layer and a transparent material sheet provided with a transparent hot-melt material layer, thermally producing an ink pattern on the transparent material layer of the transparent material sheet by heating the ink sheet with thermal head, and thermally transferring the ink pattern to the recording medium together with the transparent hot-melt material layer.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: June 4, 2002
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hideshi Tanaka, Itsuo Takanashi, Shigeaki Tada, Toshinori Takahashi
  • Patent number: RE34947
    Abstract: A light-to-light conversion element which includes at least a photoconductive layer and a photo-modulation layer and in which light incident on these layers is reflected by a reflection layer and in which a selective reflection characteristic corresponding to color separation is given to the reflection layer. Thereby, among the light incident on the photoconductive layer and the photo-modulation layer, light having wavelength of the specific region is selectively reflected by the reflection layer, so that the write and read operation of information is performed on the selected light.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: May 23, 1995
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Itsuo Takanashi, Shintaro Nakagaki, Hirohoko Shionaga, Masato Furuya, Tsutou Asakura, Testuhi Suzuki