Patents by Inventor Koju Yamamoto

Koju Yamamoto 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: 11614477
    Abstract: An inspection device according to an embodiment can conduct high temperature inspection and low temperature inspection on an object to be inspected. The inspection device includes an inspection chamber in which inspection is conducted on the object; a dry air supply section that is connected to the inspection chamber via a first valve and that is configured to supply dry air into the inspection chamber; a dew point meter that is connected to the inspection chamber via a second valve and that is configured to measure a dew point in the inspection chamber; and a bypass pipe connecting the dry air supply section and the dew point meter via a third valve.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 28, 2023
    Assignee: Tokyo Electron Limited
    Inventors: Yasuhiro Osuga, Koju Yamamoto
  • Publication number: 20210132135
    Abstract: An inspection device according to an embodiment can conduct high temperature inspection and low temperature inspection on an object to be inspected. The inspection device includes an inspection chamber in which inspection is conducted on the object; a dry air supply section that is connected to the inspection chamber via a first valve and that is configured to supply dry air into the inspection chamber; a dew point meter that is connected to the inspection chamber via a second valve and that is configured to measure a dew point in the inspection chamber; and a bypass pipe connecting the dry air supply section and the dew point meter via a third valve.
    Type: Application
    Filed: February 13, 2019
    Publication date: May 6, 2021
    Inventors: Yasuhiro OSUGA, Koju YAMAMOTO
  • Patent number: 9092005
    Abstract: An image forming apparatus of the present disclosure includes a drum unit, a development unit, a stopper, a pressing unit and an interlock device. The development unit includes a development roller that develops a toner image on the photoconductor drum. The drum unit and the development unit can be removed from the main body of the apparatus. The stopper is freely moved between a restriction position where the removal of the drum unit is restricted and a release position where the restriction of the removal of the drum unit is released. The pressing unit is freely moved between a pressing position where the development roller is pressed onto the photoconductor drum and a pressing release position where the development roller is separated from the photoconductor drum such that the pressing is released. The interlocking device interlocks the movements of the stopper and the pressing unit.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: July 28, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Koju Yamamoto
  • Patent number: 8864124
    Abstract: A sheet conveying apparatus includes a casing, a first conveying path, a second conveying path, a joining conveyance path, and a guide member. The joining conveyance path is connected to a junction portion of the first conveying path and the second conveying path, and extends downward in a sheet conveying direction. The guide member is disposed in the junction portion of the first conveying path and the second conveying path, and shifted to a position between a first position to guide the first sheet from the first conveying path to the joining conveyance path and a second position to guide the second sheet from the second conveying path to the joining conveyance path. The guide member includes a supporting point portion disposed at a central part or around thereof in a lengthwise direction, so as to change in position by pivoting around the supporting point portion.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 21, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Koju Yamamoto
  • Publication number: 20140035219
    Abstract: A sheet conveying apparatus includes a casing, a first conveying path, a second conveying path, a joining conveyance path, and a guide member. The joining conveyance path is connected to a junction portion of the first conveying path and the second conveying path, and extends downward in a sheet conveying direction. The guide member is disposed in the junction portion of the first conveying path and the second conveying path, and shifted to a position between a first position to guide the first sheet from the first conveying path to the joining conveyance path and a second position to guide the second sheet from the second conveying path to the joining conveyance path. The guide member includes a supporting point portion disposed at a central part or around thereof in a lengthwise direction, so as to change in position by pivoting around the supporting point portion.
    Type: Application
    Filed: July 29, 2013
    Publication date: February 6, 2014
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Koju Yamamoto
  • Publication number: 20140029979
    Abstract: An image forming apparatus of the present disclosure includes a drum unit, a development unit, a stopper, a pressing unit and an interlock device. The development unit includes a development roller that develops a toner image on the photoconductor drum. The drum unit and the development unit can be removed from the main body of the apparatus. The stopper is freely moved between a restriction position where the removal of the drum unit is restricted and a release position where the restriction of the removal of the drum unit is released. The pressing unit is freely moved between a pressing position where the development roller is pressed onto the photoconductor drum and a pressing release position where the development roller is separated from the photoconductor drum such that the pressing is released. The interlocking device interlocks the movements of the stopper and the pressing unit.
    Type: Application
    Filed: July 30, 2013
    Publication date: January 30, 2014
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Koju YAMAMOTO
  • Patent number: 8346137
    Abstract: A developing device includes a developing container for accommodating a two-component developer; a developer bearing member for bearing and conveying the developer, a fixed magnet including a release pole for releasing the developer from the developer bearing member, being fixed to the inside of the developer bearing member; and a backflow prevention member that is a sheet-shaped member disposed along the entire length in the longitudinal direction of the developer bearing member so as to be upstream in the direction of rotation of the developer bearing member as viewed from the release pole, the backflow prevention member being disposed so that a proximal end portion thereof is fixed to an inside surface of the developing container, and a distal end portion thereof is in contact with or adjacent to the developer bearing member and facing downstream in the direction of rotation of the developer bearing member.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: January 1, 2013
    Assignee: Kyocera Document Solutions, Inc.
    Inventors: Eiji Gyoutoku, Koju Yamamoto, Norio Kubo
  • Patent number: 8229328
    Abstract: A developer supply mechanism is composed of: a developer supply path one end side of which is opened upward and which guides the developer in substantially a vertical direction; a convex portion that is formed on a wall surface of the developer supply path; a coil spring that is disposed in the developer supply path, stretchable and shrinkable in a longitudinal direction of the developer supply path, pressurized to the convex portion in a natural-length state, stretched toward one end side of the developer supply path when the convex portion is hooked on between pitches by a circumferential-direction rotation, and is given a horizontal-direction movement to leave the convex portion when coming off the convex portion; and a drive portion that is connected to the coil spring at the other end side of the developer supply path and rotates the coil spring in a circumferential direction of the coil spring.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 24, 2012
    Assignee: Kyocera Mita Corporation
    Inventor: Koju Yamamoto
  • Patent number: 8086147
    Abstract: An intermediate transfer unit of an image forming apparatus is provided between a plurality of developer containers for containing developer and a plurality of developing devices. The intermediate transfer unit includes an intermediate transfer unit for secondarily transferring primarily transferred developed images from the plurality of image carriers onto a paper, an intermediate transfer unit driving mechanism for driving the intermediate transfer unit, and a housing for supporting the intermediate transfer unit driving mechanism. One end of the housing includes a plurality of developer inlet ports positionally corresponding to the developer supply ports of the developer containers respectively, a plurality of developer outlet ports positionally corresponding to the developer receiving ports of the developing devices respectively, and a plurality of developer supply paths connecting between the developer inlet ports and the developer outlet ports respectively.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 27, 2011
    Assignee: Kyocera Mita Corporation
    Inventors: Shinji Furuta, Koju Yamamoto, Hirokazu Fujii, Hiroki Morishita, Yoshiaki Ikebata
  • Publication number: 20110052270
    Abstract: A developing device includes a developing container for accommodating a two-component developer; a developer bearing member for bearing and conveying the developer, a fixed magnet including a release pole for releasing the developer from the developer bearing member, being fixed to the inside of the developer bearing member; and a backflow prevention member that is a sheet-shaped member disposed along the entire length in the longitudinal direction of the developer bearing member so as to be upstream in the direction of rotation of the developer bearing member as viewed from the release pole, the backflow prevention member being disposed so that a proximal end portion thereof is fixed to an inside surface of the developing container, and a distal end portion thereof is in contact with or adjacent to the developer bearing member and facing downstream in the direction of rotation of the developer bearing member.
    Type: Application
    Filed: August 3, 2010
    Publication date: March 3, 2011
    Applicant: KYOCERA MITA CORPORATION
    Inventors: Eiji Gyoutoku, Koju Yamamoto, Norio Kubo
  • Publication number: 20100272475
    Abstract: A developer supply mechanism is composed of: a developer supply path one end side of which is opened upward and which guides the developer in substantially a vertical direction; a convex portion that is formed on a wall surface of the developer supply path; a coil spring that is disposed in the developer supply path, stretchable and shrinkable in a longitudinal direction of the developer supply path, pressurized to the convex portion in a natural-length state, stretched toward one end side of the developer supply path when the convex portion is hooked on between pitches by a circumferential-direction rotation, and is given a horizontal-direction movement to leave the convex portion when coming off the convex portion; and a drive portion that is connected to the coil spring at the other end side of the developer supply path and rotates the coil spring in a circumferential direction of the coil spring.
    Type: Application
    Filed: March 23, 2010
    Publication date: October 28, 2010
    Applicant: KYOCERA MITA CORPORATION
    Inventor: Koju YAMAMOTO
  • Publication number: 20100150613
    Abstract: An intermediate transfer unit of an image forming apparatus is provided between a plurality of developer containers for containing developer and a plurality of developing devices. The intermediate transfer unit includes an intermediate transfer unit for secondarily transferring primarily transferred developed images from the plurality of image carriers onto a paper, an intermediate transfer unit driving mechanism for driving the intermediate transfer unit, and a housing for supporting the intermediate transfer unit driving mechanism. One end of the housing includes a plurality of developer inlet ports positionally corresponding to the developer supply ports of the developer containers respectively, a plurality of developer outlet ports positionally corresponding to the developer receiving ports of the developing devices respectively, and a plurality of developer supply paths connecting between the developer inlet ports and the developer outlet ports respectively.
    Type: Application
    Filed: February 23, 2010
    Publication date: June 17, 2010
    Applicant: KYOCERA MITA CORPORATION
    Inventors: Shinji Furuta, Koju Yamamoto, Hirokazu Fujii, Hiroki Morishita, Yoshiaki Ikebata
  • Patent number: 7684730
    Abstract: An intermediate transfer unit of an image forming apparatus is provided between a plurality of developer containers for containing developer and a plurality of developing devices. The intermediate transfer unit includes an intermediate transfer unit for secondarily transferring primarily transferred developed images from the plurality of image carriers onto a paper, an intermediate transfer unit driving mechanism for driving the intermediate transfer unit, and a housing for supporting the intermediate transfer unit driving mechanism. One end of the housing includes a plurality of developer inlet ports positionally corresponding to the developer supply ports of the developer containers respectively, a plurality of developer outlet ports positionally corresponding to the developer receiving ports of the developing devices respectively, and a plurality of developer supply paths connecting between the developer inlet ports and the developer outlet ports respectively.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: March 23, 2010
    Assignee: Kyocera Mita Corporation
    Inventors: Shinji Furuta, Koju Yamamoto, Hirokazu Fujii, Hiroki Morishita, Yoshiaki Ikebata
  • Publication number: 20080253804
    Abstract: An intermediate transfer unit of an image forming apparatus is provided between a plurality of developer containers for containing developer and a plurality of developing devices. The intermediate transfer unit includes an intermediate transfer unit for secondarily transferring primarily transferred developed images from the plurality of image carriers onto a paper, an intermediate transfer unit driving mechanism for driving the intermediate transfer unit, and a housing for supporting the intermediate transfer unit driving mechanism. One end of the housing includes a plurality of developer inlet ports positionally corresponding to the developer supply ports of the developer containers respectively, a plurality of developer outlet ports positionally corresponding to the developer receiving ports of the developing devices respectively, and a plurality of developer supply paths connecting between the developer inlet ports and the developer outlet ports respectively.
    Type: Application
    Filed: January 18, 2008
    Publication date: October 16, 2008
    Applicant: Kyocera Mita Corporation
    Inventors: Shinji Furuta, Koju Yamamoto, Hirokazu Fujii, Hiroki Morishita, Yoshiaki Ikebata