Patents by Inventor Osamu Takagi

Osamu Takagi 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).

  • FIXING DEVICE AND FIXING TEMPERATURE CONTROL METHOD OF FIXING DEVICE
    Publication number: 20180136594
    Abstract: According to one embodiment, a fixing device includes determination means for determining the size of an image forming area of a medium, heating means for including an endless rotating body, plural heat-generating members which are formed in a perpendicular direction to a transporting direction, inclined by a predetermined angle, and divided by a predetermined length, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and nipping and carrying the medium in the transporting direction along with the heating means, and heating control means for controlling the switching unit to select and conduct heat-generating members and controlling the heating means to heat the medium.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 17, 2018
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Osamu Takagi
  • HEAT STORAGE BODY
    Publication number: 20180135918
    Abstract: A circular columnar body made of ceramics and including a plurality of through-holes extending in a single axial direction Z and having circular or elliptical cross sectional shapes orthogonal to the axial direction at a density of 2 to 50 pieces per square inch in a cross section orthogonal to the axial direction is once hollowed out in a direction X orthogonal to the axial direction Z by a cylinder, and the circular columnar body can also be once again hollowed out in the direction orthogonal to the axial direction Z and the direction X by the cylinder.
    Type: Application
    Filed: July 29, 2016
    Publication date: May 17, 2018
    Applicant: TYK CORPORATION
    Inventors: Osamu TAKAGI, Shuichi ADACHI
  • THERMALLY-CONDUCTIVE RUBBER MATERIAL, BELT FOR IMAGE FORMING APPARATUS, AND IMAGE FORMING APPARATUS
    Publication number: 20180120745
    Abstract: According to one embodiment, a thermally-conductive rubber material includes silicone rubber, carbon fiber, and spherical graphite. The thermally-conductive rubber material further includes carbon fiber, and the average diameter D of the carbon fiber and the average primary particle diameter R of the spherical graphite satisfy [R/D]?[½].
    Type: Application
    Filed: July 5, 2017
    Publication date: May 3, 2018
    Inventors: Osamu TAKAGI, Hiroshi HASHIZUME
  • FIXING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20180067428
    Abstract: A fixing device includes a roller, an endless belt, and a heat generating member disposed in a space inside the endless belt, extending in a width direction of the endless belt, and pressing the endless belt against the roller. A sheet is passed through a nip formed between the roller and a portion of the endless belt pressed by the heat generating member, such that an image on the sheet is fixed thereto. The heat generating member includes first and second heat generating portions that are adjacent to each other along the width direction and independently operable from each other. A boundary of the first and second heat generating portions extends in a direction inclined with respect to a sheet conveying direction.
    Type: Application
    Filed: October 31, 2017
    Publication date: March 8, 2018
    Inventor: Osamu TAKAGI
  • FIXING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20180059589
    Abstract: A fixing device includes a plurality of heating members, a press roller, and an intermediate temperature control unit. The plurality of heating members are each in contact with an inside of a rotating body. The rotating body also has a width which is equal to or greater than a width of a recording medium to be printed. The intermediate temperature control unit has a medium width detecting unit configured to detect a width of the recording medium and a print width detecting unit configured to detect a print width of recording data and control a portion of the heating member corresponding to an intermediate heating area. The intermediate heating area is maintained at a set intermediate temperature which is lower than a set temperature of a printing heating area.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 1, 2018
    Inventor: Osamu TAKAGI
  • HEATER AND IMAGE FORMING APPARATUS
    Publication number: 20180059594
    Abstract: Embodiments disclosed herein generally relate to a heater, comprising an insulator substrate, a first member, a plurality of electrodes, and a second member. The first member is configured to generate heat on an upper surface of the insulator substrate across a first direction. The first member has a first end opposite a second end. The plurality of electrodes are formed on both the first end and the second end of the first member, respectively, and each electrode is disposed in a direction perpendicular to the first direction. The second member is configured to store heat. The second member comprises a latent heat material having latent heat in a target temperature zone. Furthermore, the latent heat material is fixed to a side surface or a bottom surface of the insulator substrate.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 1, 2018
    Inventor: Osamu TAKAGI
  • Fixing device and image forming apparatus
    Patent number: 9904217
    Abstract: A fixing device includes a plurality of heating members, a press roller, and an intermediate temperature control unit. The plurality of heating members are each in contact with an inside of a rotating body. The rotating body also has a width which is equal to or greater than a width of a recording medium to be printed. The intermediate temperature control unit has a medium width detecting unit configured to detect a width of the recording medium and a print width detecting unit configured to detect a print width of recording data and control a portion of the heating member corresponding to an intermediate heating area. The intermediate heating area is maintained at a set intermediate temperature which is lower than a set temperature of a printing heating area.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 27, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Osamu Takagi
  • Fixing device and fixing temperature control method of fixing device
    Patent number: 9904219
    Abstract: According to one embodiment, a fixing device includes determination means for determining the size of an image forming area of a medium, heating means for including an endless rotating body, plural heat-generating members which are formed in a perpendicular direction to a transporting direction, inclined by a predetermined angle, and divided by a predetermined length, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and nipping and carrying the medium in the transporting direction along with the heating means, and heating control means for controlling the switching unit to select and conduct heat-generating members and controlling the heating means to heat the medium.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: February 27, 2018
    Assignees: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventor: Osamu Takagi
  • FIXING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20180052411
    Abstract: A fixing device includes a roller, an endless belt, and a heat generating member disposed in a space inside the endless belt, extending in a width direction of the endless belt, and pressing the endless belt against the roller. A sheet is passed through a nip formed between the roller and a portion of the endless belt pressed by the heat generating member, such that an image on the sheet is fixed thereto. The heat generating member includes a first heat generating portion, and a pair of second heat generating portions, the first generating portion being between the pair of second heat generating portions in the width direction, and the first heat generating portion is independently operable with respect to the pair of second heat generating portions.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 22, 2018
    Inventor: Osamu TAKAGI
  • IMAGE FORMING APPARATUS HAVING FIXING DEVICE THAT RESPONDS TO REQUEST WHEN USING DECOLORABLE INK
    Publication number: 20180017908
    Abstract: An image forming apparatus includes: a first image forming unit which forms a first image on a first recording medium with a first material that is not thermally decolorizable; a second image forming unit which forms a second image on a second recording medium with a second material that is thermally decolorizable; a fixing device which is on a common carrying path shared by the first recording medium and the second recording medium and fixes the first image to the first recording medium; and a controller which controls the fixing device so that a temperature of the fixing device is lower than a decolorizing temperature of the second material when the second recording medium reaches the fixing device.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Inventors: Yoshiaki KANEKO, Minoru YOSHIDA, Osamu TAKAGI, Takahito KABAI, Hiroyuki TAGUCHI, Ken IGUCHI
  • HEATER, FIXING DEVICE, AND IMAGE FORMING APPARATUS
    Publication number: 20170364005
    Abstract: A heater includes a heat generating element and a protective layer. The protective layer covers the heat generating element, and at least part of a surface thereof has a convex surface that is convex toward the heat generating element.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Inventors: Kazuhiko KIKUCHI, Osamu TAKAGI, Chie MIYAUCHI
  • FIXING DEVICE, IMAGE FORMING APPARATUS, AND METHOD FOR ADJUSTING LENGTH OF INTERPOSING AND PRESSURIZING REGION BY FIXING DEVICE
    Publication number: 20170363996
    Abstract: In general, a fixing device according to an embodiment includes an endless belt, a pressure element, a heating member, an adjustment mechanism, and a controller. The pressure element conveys a sheet while interposing the sheet under pressure between the same and the endless belt. The heating member is provided on the inner side of the endless belt and has a heat generating element for heating the endless belt. The adjustment mechanism moves at least one of the heating member and the pressure element in such a direction as to bring the one closer to or away from the other, to adjust the nip width which is the length of an interposing and pressurizing region in a sheet conveyance direction, the interposing and pressurizing region being formed by the heating member and the pressure element to interpose the endless belt under pressure.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Inventors: Kazuhiko KIKUCHI, Osamu TAKAGI, Chie MIYAUCHI
  • HEATING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20170363999
    Abstract: A heating device according to an embodiment generally includes heat generating parts and temperature sensors. The heat generating parts are divided into a plurality of blocks, so that the plurality of heat generating parts are arranged with a gap therebetween on a substrate in each block. With a temperature detection region provided in each block, the temperature sensors are provided corresponding to the heat generating parts with the gaps being avoided. The temperatures of the heat generating parts are detected by the temperature sensors that are less in number than the plurality of heat generating parts.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Inventors: Chie MIYAUCHI, Osamu Takagi, Kazuhiko Kikuchi
  • HEATER AND FIXING DEVICE
    Publication number: 20170364003
    Abstract: There is provided a heater according to an embodiment including a heat generating unit configured to generate heat by electric conduct ion; and a plurality of electrodes configured to be respectively disposed at facing side edges of the heat generating unit so as to be electrically connected to the heat generating unit and at least one side of the side edges is formed by cutting out a part thereof.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 21, 2017
    Inventor: Osamu TAKAGI
  • HEATER AND HEATING APPARATUS
    Publication number: 20170363998
    Abstract: According to one embodiment, a heater includes an insulating substrate, a heat generating section formed in the insulating substrate and including a plurality of divided regions in a longitudinal direction, temperature sensors detecting temperature of the heat generating section and a wiring pattern for power feed to the temperature sensors, each formed in a layer different from a layer in which the heat generating section is formed in the insulating substrate. The heat generating section, the temperature sensors, and the wiring pattern are layer stacked.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 21, 2017
    Inventor: Osamu TAKAGI
  • HEATER AND FIXING APPARATUS
    Publication number: 20170364004
    Abstract: According to one embodiment, a heater includes an insulator substrate, a heat generating section in which a plurality of divided regions are formed in a longitudinal direction on a first surface of the insulator substrate, electrodes formed at both end portions of the heat generating section to correspond to the plurality of divided regions, and electric conductors connected to at least one of the electrodes and formed over a surface different from the first surface of the insulator substrate.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 21, 2017
    Inventor: Osamu TAKAGI
  • HEATER AND HEATING DEVICE
    Publication number: 20170367152
    Abstract: A heater according to an embodiment generally includes a base, a protrusion, a heat generating layer, a first protective layer, and an electrode layer. The protrusion protrudes from the base. The heat generating layer is disposed on the protrusion. The first protective layer is disposed on the heat generating layer. The electrode layer is disposed on the base to drive the heat generating layer.
    Type: Application
    Filed: June 16, 2017
    Publication date: December 21, 2017
    Inventors: Osamu TAKAGI, Kazuhiko Kikuchi, Chie Miyauchi
  • HEATER AND HEATING APPARATUS
    Publication number: 20170363995
    Abstract: According to an embodiment, a heater includes a heat-resistant insulating substrate, a plurality of heat generating members arrayed on a first surface of the insulating substrate, and a heat radiating body disposed on a surface different from the first surface of the insulating substrate corresponding to gap portions among the plurality of heat generating members and configured to actively or passively radiate stored heat.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 21, 2017
    Inventor: Osamu TAKAGI
  • HEATER AND HEATING DEVICE FOR DIVIDING RESISTIVE MEMBERS INTO BLOCKS AND CAUSING RESISTIVE MEMBERS TO GENERATE HEAT BY BLOCK
    Publication number: 20170364001
    Abstract: A heater according to an embodiment generally includes resistive members and a first pole-side electrode. The plurality of resistive members are arranged in a first direction. The first pole-side electrode is connected to one ends of the resistive members in a second direction perpendicular to the first direction and configured to divide the plurality of resistive members into a plurality of blocks and to cause the plurality of resistive members to generate heat by the block. The first pole-side electrode includes a first pole-side first electrode provided in a first block including the resistive members arranged successively in the first direction, extending across the one ends of the resistive members in the first block, and connected to the one ends.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Inventors: Osamu TAKAGI, Kazuhiko Kikuchi, Chie Miyauchi
  • Image forming apparatus having fixing device that responds to request when using decolorable ink
    Patent number: 9804543
    Abstract: An image forming apparatus includes: a first image forming unit which forms a first image on a first recording medium with a first material that is not thermally decolorizable; a second image forming unit which forms a second image on a second recording medium with a second material that is thermally decolorizable; a fixing device which is on a common carrying path shared by the first recording medium and the second recording medium and fixes the first image to the first recording medium; and a controller which controls the fixing device so that a temperature of the fixing device is lower than a decolorizing temperature of the second material when the second recording medium reaches the fixing device.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: October 31, 2017
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventors: Yoshiaki Kaneko, Minoru Yoshida, Osamu Takagi, Takahito Kabai, Hiroyuki Taguchi, Ken Iguchi