Patents by Inventor Yutaka Arai

Yutaka Arai 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: 20160018772
    Abstract: A pressure member includes a base, an elastic layer outside the base, and a surface layer on the elastic layer, the surface layer containing a fluorine-containing resin. The surface layer is fixed on the elastic layer in a state of being stretched in the longitudinal direction of the pressure member, the elastic layer has a porosity of 20% by volume or more and 60% by volume or less, and when the elastic modulus of the elastic layer in the thickness direction is defined as E (ND) and the elastic modulus of the elastic layer in the longitudinal direction of the pressure member is defined as E (MD), E (MD)/E (ND) is larger than 1.0.
    Type: Application
    Filed: July 15, 2015
    Publication date: January 21, 2016
    Inventors: Jun Miura, Yutaka Arai, Shigeaki Takada, Akeshi Asaka
  • Publication number: 20150367544
    Abstract: A manufacturing apparatus for manufacturing a fixing member includes: a metal mold capable of holding a base material of the fixing member in an inside thereof; and an injecting member including a group of openings configured to inject a liquid rubber containing a needle-like filler into the metal mold in which the base material is held. The injecting member is configured so that a ratio of a total perimeter of the group of openings to a sum of a perimeter of an inner surface of the metal mold and an outer surface of the base material is 1.3 or more and 3.3 or less.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 24, 2015
    Inventors: Akeshi Asaka, Shuichi Tamura, Hiroto Sugimoto, Shinsuke Takahashi, Shigeaki Takada, Takeshi Suzuki, Jun Miura, Yutaka Arai
  • Patent number: 9176442
    Abstract: An image heating apparatus includes an endless belt configured to heat an image on a sheet at a nip potion, a heat generation device configured to cause the belt to generate heat, a nip forming member configured to form the nip portion between the nip forming member and the belt, and a pressing roller configured to press an inner surface of the belt toward the nip forming member, the pressing roller including an elastic porous layer containing a plurality of filler particles, wherein a thermal conductivity of the elastic porous layer in an axial direction of the pressing roller is in a range of 6 times to 900 times a thermal conductivity of the elastic porous layer in a radial direction of the pressing roller.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: November 3, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshinori Nakayama, Hiroto Sugimoto, Masayuki Tamaki, Koichi Kakubari, Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Takeshi Suzuki, Naoki Akiyama, Shigeaki Takada, Yasuhiro Miyahara
  • Patent number: 9152110
    Abstract: The present invention relates to a pressure rotating member which achieves the shortening of a warm-up time while suppressing a non-recording material-contacting area's temperature rise. The pressure rotating member which is used in a thermal fixing apparatus includes: a substrate; and an elastic layer that is formed on the substrate and has a void, wherein the elastic layer contains a needle-shaped filler, wherein the needle-shaped filler has such a thermal conductivity ?1 of the elastic layer in a direction along a rotary axis of the pressure rotating member as to be 6 times or more and 900 times or less of a thermal conductivity ?2 of the elastic layer in a thickness direction.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: October 6, 2015
    Assignee: Canon Kabushiki Kiasha
    Inventors: Jun Miura, Yutaka Arai
  • Publication number: 20150266055
    Abstract: The present invention relates to a pressure rotating member which achieves the shortening of a warm-up time while suppressing a non-recording material-contacting area's temperature rise. The pressure rotating member which is used in a thermal fixing apparatus includes: a substrate; and an elastic layer that is formed on the substrate and has a void, wherein the elastic layer contains a needle-shaped filler, wherein the needle-shaped filler has such a thermal conductivity ?1 of the elastic layer in a direction along a rotary axis of the pressure rotating member as to be 6 times or more and 900 times or less of a thermal conductivity ?2 of the elastic layer in a thickness direction.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Jun Miura, Yutaka Arai
  • Patent number: 9123303
    Abstract: A display device includes: a display screen displaying screen images; a required-brightness computation unit computing required brightnesses for each of the screen images; a brightness determination unit comparing the required brightnesses computed for each of the screen images, and determining the screen image corresponding to the required brightness having highest brightness to be a maximum-required-brightness image; and a brightness control unit performing light-source brightness control and performing image gradation control, the light-source brightness control controlling the brightness of the light source so as to make the brightness of the light source the set brightness for the maximum-required-brightness image, the image gradation control controlling a gradation of the image displayed on the liquid-crystal panel in accordance with the brightness of the light source, so as to make a brightness of each of the screen images other than the maximum-required-brightness image the set brightness specified fo
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: September 1, 2015
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Masatoshi Abe, Yutaka Arai
  • Publication number: 20150244974
    Abstract: A control unit determines the content of a video based on an input video signal based on results of determination utilizing a monochrome determination unit and a text determination unit. Based on a display mode according to a result of the content determination, the control unit displays an image corresponding to the input video signal on a display panel.
    Type: Application
    Filed: October 12, 2012
    Publication date: August 27, 2015
    Inventor: Yutaka Arai
  • Patent number: 9086664
    Abstract: Provided is a fixing device, the heat generation amount of which can be obtained with a smaller amount of a microwave absorbing material. As a result, the start-up (warm-up) time for achieving a fixing temperature can be shortened without impairing characteristics such as flexibility, releasing property, and durability. The fixing device includes a heating member; a pressurizing member; and a microwave generating unit. It is configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member. The heating member includes a heat generating layer for generating heat with microwaves generated by the microwave generating unit. The heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 ?m, and an absorption peak in a Raman spectrum resulting from a graphite structure.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Jiro Ishizuka, Shuichi Tamura, Ryo Yashiro, Hiroto Sugimoto, Naoki Akiyama, Kenji Hashimoto, Yasuhiro Miyahara, Hiroki Muramatsu, Koji Sato
  • Publication number: 20150147101
    Abstract: An image heating apparatus includes an endless belt configured to heat an image on a sheet at a nip potion, a heat generation device configured to cause the belt to generate heat, a nip forming member configured to form the nip portion between the nip forming member and the belt, and a pressing roller configured to press an inner surface of the belt toward the nip forming member, the pressing roller including an elastic porous layer containing a plurality of filler particles, wherein a thermal conductivity of the elastic porous layer in an axial direction of the pressing roller is in a range of 6 times to 900 times a thermal conductivity of the elastic porous layer in a radial direction of the pressing roller.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Toshinori Nakayama, Hiroto Sugimoto, Masayuki Tamaki, Koichi Kakubari, Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Takeshi Suzuki, Naoki Akiyama, Shigeaki Takada, Yasuhiro Miyahara
  • Publication number: 20150071690
    Abstract: A pressing rotatable member for use with an image heating apparatus including a base layer; and a porous elastic layer provided on the base layer, wherein the elastic layer has a thermal conductivity in an axial direction thereof and a thermal conductivity in a circumferential direction thereof which are not less than 6-times and not more than 900-times a thermal conductivity in a thickness direction thereof.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 12, 2015
    Inventors: Yasuhiro Miyahara, Shigeaki Takada, Toshinori Nakayama, Daigo Matsuura, Naoki Akiyama, Shuichi Tamura, Yutaka Arai, Jun Miura, Takeshi Suzuki, Katsuhisa Matsunaka
  • Publication number: 20140301763
    Abstract: The present invention relates to a pressure rotating member which achieves the shortening of a warm-up time while suppressing a non-recording material-contacting area's temperature rise. The pressure rotating member which is used in a thermal fixing apparatus includes: a substrate; and an elastic layer that is formed on the substrate and has a void, wherein the elastic layer contains a needle-shaped filler, wherein the needle-shaped filler has such a thermal conductivity ?1 of the elastic layer in a direction along a rotary axis of the pressure rotating member as to be 6 times or more and 900 times or less of a thermal conductivity ?2 of the elastic layer in a thickness direction.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Jun Miura, Yutaka Arai
  • Publication number: 20140248071
    Abstract: Provided is a fixing device whose required heat generation amount can be obtained with a smaller amount of a microwave absorbing material, hence start-up (warm-up) time for achieving fixable temperature of the fixing device can be shortened without impairing characteristics such as flexibility, releasing property, durability. The fixing device comprises: a heating member; a pressurizing member; and a microwave generating unit, the fixing device being configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member, wherein: the heating member includes a heat generating layer for generating heat with microwave generated by the microwave generating unit; and the heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 ?m, and in Raman spectrum, an absorption peak resulting from graphite structure.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 4, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Jiro Ishizuka, Shuichi Tamura, Ryo Yashiro, Hiroto Sugimoto, Naoki Akiyama, Kenji Hashimoto, Yasuhiro Miyahara, Hiroki Muramatsu, Koji Sato
  • Patent number: 8666016
    Abstract: A fuel exchange apparatus, comprising: a traveling carriage moving horizontally in one direction; a traversing carriage moving horizontally on the traveling carriage in a direction orthogonal to the one direction in which the traveling carriage moves; and a fuel holding unit attached to the traversing carriage, and including an telescopic tube enabling to extend and contract, a holding tool for holding a fuel assembly and releasing the held fuel assembly, and a lifter for raising and lowering the holding tool by winding and running out linear members for suspending and supporting the holding tool from the traversing carriage, wherein the holding tool is selectively placed in a constrained state in which the holding tool is subject to a constraint by the telescopic tube and in a freely suspended state in which the holding tool is released from the constraint by the telescopic tube and freely suspended by the linear members.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: March 4, 2014
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Yutaka Arai, Yuji Hosoda, Ryoji Azumaishi, Yutaka Kometani, Kunihiko Iwama
  • Publication number: 20140023171
    Abstract: A fuel exchange apparatus, comprising: a traveling carriage moving horizontally in one direction; a traversing carriage moving horizontally on the traveling carriage in a direction orthogonal to the one direction in which the traveling carriage moves; and a fuel holding unit attached to the traversing carriage, and including an telescopic tube enabling to extend and contract, a holding tool for holding a fuel assembly and releasing the held fuel assembly, and a lifter for raising and lowering the holding tool by winding and running out linear members for suspending and supporting the holding tool from the traversing carriage, wherein the holding tool is selectively placed in a constrained state in which the holding tool is subject to a constraint by the telescopic tube and in a freely suspended state in which the holding tool is released from the constraint by the telescopic tube and freely suspended by the linear members.
    Type: Application
    Filed: December 7, 2007
    Publication date: January 23, 2014
    Inventors: Yutaka Arai, Yuji Hosoda, Ryoji Azumaishi, Yutaka Kometani, Kunihiko Iwama
  • Publication number: 20130033529
    Abstract: A display device includes: a display screen displaying screen images; a required-brightness computation unit computing required brightnesses for each of the screen images; a brightness determination unit comparing the required brightnesses computed for each of the screen images, and determining the screen image corresponding to the required brightness having highest brightness to be a maximum-required-brightness image; and a brightness control unit performing light-source brightness control and performing image gradation control, the light-source brightness control controlling the brightness of the light source so as to make the brightness of the light source the set brightness for the maximum-required-brightness image, the image gradation control controlling a gradation of the image displayed on the liquid-crystal panel in accordance with the brightness of the light source, so as to make a brightness of each of the screen images other than the maximum-required-brightness image the set brightness specified fo
    Type: Application
    Filed: April 23, 2010
    Publication date: February 7, 2013
    Applicant: NEC Display Solutions, Ltd.
    Inventors: Masatoshi Abe, Yutaka Arai
  • Patent number: 8368685
    Abstract: In an image display apparatus of the invention, a signal input unit outputs a complex image signal, which has been converted to an easily-processed format, to a signal-for-display generator. The signal-for-display generator converts the complex image signal to a signal suitable for displaying at a display unit. An apparatus state-detector detects a state of the display apparatus. Based on apparatus state information input from the apparatus state-detector, an arithmetic unit calculates an amount of non-uniformity to be corrected, and outputs it to a non-uniformity corrector. Based on the non-uniformity correction amount corresponding to a position displayed at the display unit, the non-uniformity corrector corrects the image signal input from the signal-for-display generator, converts it to a signal format that can be used at the display unit, and outputs it.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: February 5, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Yutaka Arai
  • Patent number: 8279352
    Abstract: In a video display device of the present invention, a main control unit is equipped with a user interface for varying correction values set to a range correction unit and controls a range correction unit by acquiring the corresponding correction values from a storage unit in accordance with correction level information input by the user interface. The storage unit stores range correction values for the video display unit in correspondence with each piece of the correction level information input by the user interface. Thus, it is possible to correct luminance ranges to suit the user's preference without causing a large luminance reduction.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: October 2, 2012
    Assignees: NEC Display Solutions, Ltd., Mitsubishi Electric Control Software Corporation
    Inventors: Masatoshi Abe, Yutaka Arai, Hiroki Iwataka
  • Patent number: 7515991
    Abstract: In cleaning using a self-propelled cleaning device, firstly the cleaning device moves alongside a wall surface and then a reference direction is set. Next, the cleaning device advances alongside the wall surface at a prescribed distance, makes a right-angle turn, and travels in the reference direction. When the cleaning device reaches the surface of an opposing wall, it moves in a spiraling manner. At that time, the orientation angle of the cleaning device, which is estimated using a gyro sensor, is checked and corrected. If an obstacle is encountered while traveling, the cleaning device travels on a path that avoids the obstacle or travels in a spiral manner in a region in front of the obstacle.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: April 7, 2009
    Assignees: Hitachi, Ltd., Hitachi Home and Life Solutions, Inc.
    Inventors: Saku Egawa, Yutaka Arai, Ryoko Ichinose, Yasuhiro Asa, Hirofumi Tanaka
  • Publication number: 20090046091
    Abstract: In an image display apparatus of the invention, a signal input unit outputs a complex image signal, which has been converted to an easily-processed format, to a signal-for-display generator. The signal-for-display generator converts the complex image signal to a signal suitable for displaying at a display unit. An apparatus state-detector detects a state of the display apparatus. Based on apparatus state information input from the apparatus state-detector, an arithmetic unit calculates an amount of non-uniformity to be corrected, and outputs it to a non-uniformity corrector. Based on the non-uniformity correction amount corresponding to a position displayed at the display unit, the non-uniformity corrector corrects the image signal input from the signal-for-display generator, converts it to a signal format that can be used at the display unit, and outputs it.
    Type: Application
    Filed: December 15, 2006
    Publication date: February 19, 2009
    Inventor: Yutaka Arai
  • Publication number: 20090015728
    Abstract: In a video display device of the present invention, a main control unit is equipped with a user interface for varying correction values set to a range correction unit and controls a range correction unit by acquiring the corresponding correction values from a storage unit in accordance with correction level information input by the user interface. The storage unit stores range correction values for the video display unit in correspondence with each piece of the correction level information input by the user interface. Thus, it is possible to correct luminance ranges to suit the user's preference without causing a large luminance reduction.
    Type: Application
    Filed: February 15, 2007
    Publication date: January 15, 2009
    Applicants: NEC DISPLAY SOLUTIONS, LTD., MITSUBISHI ELECTRIC CONTROL SOFTWARE CORPORATION
    Inventors: Masatoshi Abe, Yutaka Arai, Hiroki Iwataka