Patents by Inventor Eiji Okamoto

Eiji Okamoto 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: 10409208
    Abstract: An image forming apparatus includes a conveyance section, an image forming section, a fixing section, a sheet output tray, a toner container, a suitable product determining section, and a control section. The suitable product determining section determines whether the toner container loaded in an apparatus body is a suitable product. When the suitable product determining section determines that the toner container is not a suitable product, on condition of successive feeding of sheets, the control section allows, after every predetermined number of sheets have been subjected to an image forming operation, a fixing aging operation for stopping the image forming operation and rotating rotating bodies of the fixing section to be performed. When the suitable product determining section determines that the toner container is a suitable product, the control section keeps the fixing aging operation conditional on successive feeding of sheets from being performed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 10, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Sueaki Okamoto, Eiji Nimura, Koji Kuramashi
  • Patent number: 10384251
    Abstract: In performing burring processing on a sheet-like member, the following processes are performed: a punching process of performing punching processing of the sheet-like member; a hole expansion process of performing hole expansion processing of a punched hole formed by the punching process; a re-punching process of performing punching processing again on a portion surrounding the punched hole expanded by force in the hole expansion process; and a burring process of pushing a portion surrounding a re-punched hole that is a punched hole formed by the re-punching process and forming a vertical wall.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 20, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Eiji Isogai, Yutaka Mikazuki, Riki Okamoto
  • Publication number: 20190248077
    Abstract: A three-dimensional modeling apparatus includes a plurality of ejection sections that eject shaping material on the basis of shaping data, a detection section detecting an ejection state of the shaping material from the ejection section, a maintenance section that performs maintenance of the ejection section, and a control section that controls the ejection section, the detection section, and the maintenance section, in which, when the detection section detects an ejection abnormality of the shaping material in any of the ejection sections, the control section causes the maintenance section to perform the maintenance of the ejection section in which the ejection abnormality is detected, regenerates the shaping data, and causes the ejection section in which the ejection abnormality is not detected to eject the shaping material at a position where the shaping material is to be ejected from the ejection section in which the ejection abnormality is detected.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
  • Patent number: 10337400
    Abstract: A variable compression ratio internal combustion engine is equipped with a variable compression ratio mechanism configured to change an engine compression ratio in accordance with a rotational position of a control shaft, and a housing that accommodates therein a drive motor for changing and holding the rotational position of the control shaft. A reference position of the control shaft is learned in a state where a position of maximum rotation of the control shaft in a first rotational direction has been mechanically restricted by bringing a first movable part, which operates in conjunction with the control shaft, into abutted-engagement with a first stopper provided outside of an engine body. Subsequently, a maximum conversion angle range of the control shaft is learned in a state where a position of maximum rotation of the control shaft in a second rotational direction has been mechanically restricted by a second stopper.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: July 2, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiko Okamoto, Eiji Takahashi, Ryousuke Hiyoshi
  • Publication number: 20190184461
    Abstract: A production method of a three-dimensionally shaped object, includes a first layer forming step of forming a first layer by using a first composition containing first powder and binder, a second layer forming step of forming a second layer by using a second composition containing second powder, third powder, and binder, and a sintering step of sintering the first powder and the second powder. In a case where the first powder and the second powder are of the same material, difference in a contraction rate between the first layer and the second layer in the sintering step is reduced by matching a filling rate of the first powder in the first composition with a total filling rate of the second powder and the third powder in the second composition and matching an average particle diameter of the first powder with an average particle diameter of the second powder.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 20, 2019
    Inventors: Eiji OKAMOTO, Akihiko TSUNOYA
  • Publication number: 20190160738
    Abstract: Provided is a method which includes a first layer formation step of forming a first layer by using a first composition that contains a constituent material powder, a first powder, and a binder of a three-dimensional shaped article; a second layer formation step of forming a second layer by using a second composition that contains a second powder and a binder; a degreasing step of a stack containing the first layer and the second layer; and a sintering step of the stack, a decomposition point of the first powder is higher than decomposition points of the binder of the first layer and the binder of the second layer, a decomposition point of the second powder is higher than the decomposition point of the first powder, and a sintering temperature of the constituent material powder is higher than the decomposition point of the second powder.
    Type: Application
    Filed: November 29, 2018
    Publication date: May 30, 2019
    Inventors: Eiji OKAMOTO, Akihiko TSUNOYA
  • Publication number: 20190157851
    Abstract: An electric storage device includes an electric storage module, a bracket, an electric junction box, and a wire harness. The electric storage module includes electric storage components. The electric storage module includes an end surface and peripheral surfaces perpendicular to the end surface. The bracket is mounted to the electric storage module and includes a first surface opposed to the end surface of the electric storage module and a second surface opposite from the first surface. The electric junction box is mounted to the bracket to be opposed to the second surface of the bracket with a gap between the electric junction box and the second surface of the bracket. The wire harness is connected to the electric storage module and disposed in a section of the gap in which the end surface of the electric storage module is opposed to the electric junction box.
    Type: Application
    Filed: April 13, 2017
    Publication date: May 23, 2019
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., HONDA MOTOR CO., LTD.
    Inventors: Ryouya OKAMOTO, Hiroki HIRAI, Tetsuji TANAKA, Hiroshi SHIMIZU, Hitoshi TAKEDA, Hiroki ITAYA, Eiji KOIKE
  • Patent number: 10293545
    Abstract: A three-dimensional modeling apparatus is provided with a head unit for modeling an object by discharging a liquid into each unit grille that is defined in accordance with modeling resolutions of a cross section body in an X direction and a Y direction and a lamination interval in a Z direction, and a control unit for controlling the head unit. In the case where one or more types of the chromatic liquids are discharged into the unit grille by controlling the head unit and the spatial volume of the unit grille is not filled with the one or more types of chromatic liquids, the control unit causes the achromatic liquid to be discharged into the unit grille in addition to the one or more types of chromatic liquids so as to fill the spatial volume of the unit grille with both the chromatic liquids and the achromatic liquid.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: May 21, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Okamoto
  • Patent number: 10294380
    Abstract: A three-dimensional shaped article manufacturing apparatus is an apparatus for manufacturing a three-dimensional shaped article by laminating layers formed by discharging and curing inks including a curable resin.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: May 21, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Okamoto
  • Patent number: 10286578
    Abstract: A three-dimensional shaped article manufacturing apparatus is an apparatus for manufacturing a three-dimensional shaped article by laminating layers formed by discharging and curing inks including a curable resin. The apparatus comprises: a first discharge unit configured to discharge a substantive section-forming ink to a region that forms the three-dimensional shaped article; a second discharge unit configured to discharge a sacrificial layer-forming ink for forming a sacrificial layer to a region that is adjacent to a region that forms an outermost layer of the three-dimensional shaped article and on a surface side of the outermost layer; and a curing unit configured to cure the substantive section-forming ink and the sacrificial layer-forming ink. A viscoelasticity of the sacrificial layer-forming ink during curing of the substantive section-forming ink being not less than a viscoelasticity of the substantive section-forming ink during curing of the substantive section-forming ink.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 14, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Okamoto
  • Patent number: 10274105
    Abstract: A spool 220 is provided with a second land section 224 that blocks a portion between the spool 220 and the valve sleeve 210 at a position between the output port P21 and the lead-in port P22 when the spool 220 is located in a position for connecting the channel for input T1 and the channel for output T2 via the input port P10 and the output port P21 and blocking a channel leading from the channel for output T2 to the channel for discharge T3, and when the spool 220 is located in a position for connecting the channel for output T2 and the channel for discharge T3 via the lead-in port P22 and the discharge port P30 and blocking a channel leading from the channel for input T1 to the channel for output T2.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 30, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Eiji Okamoto, Satoshi Shimizu
  • Publication number: 20190091924
    Abstract: Provided is an apparatus for producing a three-dimensional shaped article in which the three-dimensional shaped article is produced by stacking layers, the apparatus including: an ejecting section capable of ejecting a flowable material that contains a powder, a solvent, and a binder which constitute the three-dimensional shaped article, based on data; a heating section for heating the flowable material ejected from the ejecting section; and a controlling section for controlling the ejecting section and the heating section, in which the controlling section divides data of the layer for one layer of the three-dimensional shaped article, out of the data, into a plurality of divided pieces of data, and alternately repeats ejection of the flowable material from the ejecting section and heating by the heating section, based on the divided pieces of data, to form the layer for one layer of the three-dimensional shaped article.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 28, 2019
    Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
  • Publication number: 20190077075
    Abstract: Provided is a method for producing a three-dimensional shaped article in which the three-dimensional shaped article is produced by stacking a plurality of layers, and the method includes a layer formation step of forming layers by using a composition that contains a powder, a solvent, and a binder which constitute the three-dimensional shaped article, a solvent removal step of removing the solvent contained in the layers, a thermal treatment step of applying heat at a temperature equal to or higher than a glass transition temperature of the binder to the layers obtained by performing the layer formation step and the solvent removal step, and a heating step of carrying out at least one of degreasing and sintering with respect to a stack of the three-dimensional shaped article that has been thermally treated in the thermal treatment step.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
  • Patent number: 10220570
    Abstract: In the method for manufacturing a three-dimensional structure of the invention, an ink for forming an entity portion is applied to a region where the three-dimensional structure is configured, and an ink for forming a sacrificial layer is applied to a region on a surface side of an outermost layer which is adjacent to a region to become the outermost. As the ink for forming a sacrificial layer, a first ink for forming a sacrificial layer and a second ink for forming a sacrificial layer are used. At the time of curing the ink for forming an entity portion, the viscoelasticity of the first ink is smaller than that of the ink for forming an entity portion, and at the time of curing the ink for forming an entity portion, the viscoelasticity of the second ink is greater than that of the ink for forming an entity portion.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: March 5, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Okamoto
  • Patent number: 10124538
    Abstract: A three-dimensional modeling apparatus is provided with a head unit for modeling an object by discharging a liquid into each unit grille that is defined in accordance with modeling resolutions of a cross section body in X and Y directions and a lamination interval in a Z direction, and a control unit for controlling the head unit. The unit grille has a plurality of sub unit grilles aligned in the Z direction. In the case where a designated amount of one of the plurality of types of chromatic liquids is discharged into each of the sub unit grilles by controlling the head unit and the spatial volume of the sub unit grille is not filled, the control unit causes the achromatic liquid to be discharged into the sub unit grille in addition to the chromatic liquid so as to fill the spatial volume of the unit grille.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: November 13, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Okamoto
  • Publication number: 20180250877
    Abstract: There is provided a paste for use in producing a three-dimensional shaped article, the paste containing a solvent, a binder that is soluble in the solvent, support layer forming first particles, and a material having a decomposition temperature lower than a sintering temperature of the support layer forming first particles, in which the material is contained in a volume of greater than or equal to 20% and less than or equal to 60% with respect to a total volume of the support layer forming first particles and the material being 100%. By using such a paste, a highly accurate three-dimensional shaped article can be produced.
    Type: Application
    Filed: March 5, 2018
    Publication date: September 6, 2018
    Inventors: Eiji OKAMOTO, Akihiko TSUNOYA, Masaya ISHIDA
  • Publication number: 20180243825
    Abstract: A three-dimensional modeled-object manufacturing composition used for forming a layer in a method of manufacturing a three-dimensional modeled-object in which the layer is formed using a discharge method and a plurality of the layers is laminated, the composition includes a plurality of particles and a solvent dispersing the particles. In the composition, a viscosity ?1 at a shear rate of 10 s?1 at 25° C. is 6,000 mPa·s or higher and a viscosity ?2 at the shear rate of 1,000 s?1 at 25° C. is 5,000 mPa·s or lower.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 30, 2018
    Inventors: Eiji OKAMOTO, Hiroshi WADA, Akihiko TSUNOYA, Masaya ISHIDA
  • Publication number: 20180243826
    Abstract: A three-dimensional modeled-object manufacturing composition used for forming a layer of a three-dimensional modeled-object in which a plurality of the layers is laminated, using a discharge method, the composition includes: a plurality of particles; a solvent dispersing the particles; and a binder having a function of temporarily binding the particles in a state where the solvent is removed. In the composition, a viscosity ?1 at a shear rate of 10 s?1 at 25° C. is 6,000 mPa·s or higher, a viscosity ?2 at the shear rate of 1,000 s?1 at 25° C. is 5,000 mPa·s or lower, and when a binder removal treatment is carried out by heating the composition at 400° C. for five hours in nitrogen gas, a residual carbon ratio is 0.04 mass % to 0.3 mass %.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 30, 2018
    Inventors: Eiji OKAMOTO, Hiroshi WADA, Akihiko TSUNOYA, Masaya ISHIDA
  • Patent number: 9956726
    Abstract: An apparatus for producing a three-dimensional structure that produces a three-dimensional structure by laminating layers to each other using a paste-like composition containing grains includes a stage for which the composition is provided and on which the layer is formed; and a dispenser that directly supplies the composition to a forming area on the stage.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: May 1, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Okamoto, Junichi Goto
  • Patent number: 9950507
    Abstract: Provided is a three-dimensional structure manufacturing apparatus which manufactures a three-dimensional structure by laminating layers formed using three-dimensional formation compositions containing three-dimensional formation powders, the apparatus including: a formation unit in which the three-dimensional structure is formed; a first supply unit and a second supply unit which supply the three-dimensional formation compositions to the formation unit; a first squeegee and a second squeegee which form the layers configured with the three-dimensional formation compositions on the formation unit; and a discharge unit which discharges a binding solution for binding the three-dimensional formation compositions to the layer, in which the first supply unit, the first squeegee, the discharge unit, the second squeegee, and the second supply unit are arranged in this order, along a movement direction of the discharge unit.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: April 24, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Okamoto, Junichi Goto