Patents by Inventor Kuniaki Nakano

Kuniaki Nakano 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: 20150063881
    Abstract: A fixing device includes a fixing member, a pressure member, and a guiding member. The guiding member includes a first guide surface, a second guide surface, and a pair of third guide surfaces consecutively installing both end portions in the axial direction of the first guide surface and both end portions in the axial direction of the second guide surface. The first end edge of the first guide surface has a first circular arc shape arranged such that a center portion in the axial direction projects toward the downstream side in the rotation direction with respect to both end portions in the axial direction. The second guide surface is one of a curved surface in a second circular arc shape arranged such that a center portion in the axial direction is close to the first circumference surface with respect to both end portions in the axial direction.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Kuniaki Nakano, Yuuya Shimohora
  • Patent number: 8956686
    Abstract: Disclosed is a preparation method of a radiation image conversion panel by a vapor deposition method, in which a support member is supported and rotated and the stimulable phosphor evaporated from the evaporation source is deposited onto the support member to form a stimulable phosphor layer. The radiation image conversion panel manufactured by the method is also disclosed.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: February 17, 2015
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Masashi Kondo, Kuniaki Nakano, Shigetami Kasai, Hideki Shibuya
  • Patent number: 8929754
    Abstract: An image forming apparatus includes a waste toner box, a base, a detection sensor, a counter and a controller. The waste toner box collects toner not transferred to a sheet but remaining on a surface of a photoreceptor. The base is for placing the waste toner box thereon, and a position of the base changes with a weight of the waste toner box placed thereon. The detection sensor detects the position of the base to detect an amount of toner in the waste toner box placed on the base. The counter counts the number of sheets with images formed thereon. The controller determines whether or not to continue image formation on a sheet on a basis of a signal from the detection sensor and the counter.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 6, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kuniaki Nakano, Toshiki Takiguchi
  • Patent number: 8913925
    Abstract: A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between a pair of wall portions. The conveying member includes a spiral member, an inner wall portion and shaft portions. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The inner wall portion includes a plurality of planar portions which define the hollow interior of the spiral member and are connected at predetermined angles in a circumferential direction of the rotation of the conveying member. The shaft portions are arranged at opposite end parts of the spiral member, rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: December 16, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Koji Kuramashi, Yoshihiro Yamagishi, Hiroshi Yamazaki, Kuniaki Nakano, Eiji Nimura
  • Publication number: 20140341619
    Abstract: A transfer device includes an intermediate transfer belt, and a plurality of intermediate transfer rollers. A most upstream side intermediate transfer roller which is located most upstream in a moving direction of the intermediate transfer belt has a rotational axis arranged downstream from a rotational axis of a most upstream side photoreceptor drum which is located most upstream in the moving direction of the intermediate transfer belt when the most upstream side intermediate transfer roller is in its pressing position, while a most downstream side intermediate transfer roller which is located most downstream in the moving direction of the intermediate transfer belt has a rotational axis arranged upstream from a rotational axis of a most downstream side photoreceptor drum which is located most downstream in the moving direction of the intermediate transfer belt when the most downstream side intermediate transfer roller is in its pressing position.
    Type: Application
    Filed: August 5, 2014
    Publication date: November 20, 2014
    Inventor: Kuniaki NAKANO
  • Patent number: 8824924
    Abstract: A transfer device includes an intermediate transfer belt, and a plurality of intermediate transfer rollers. A most upstream side intermediate transfer roller which is located most upstream in a moving direction of the intermediate transfer belt has a rotational axis arranged downstream from a rotational axis of a most upstream side photoreceptor drum which is located most upstream in the moving direction of the intermediate transfer belt when the most upstream side intermediate transfer roller is in its pressing position, while a most downstream side intermediate transfer roller which is located most downstream in the moving direction of the intermediate transfer belt has a rotational axis arranged upstream from a rotational axis of a most downstream side photoreceptor drum which is located most downstream in the moving direction of the intermediate transfer belt when the most downstream side intermediate transfer roller is in its pressing position.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: September 2, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kuniaki Nakano
  • Publication number: 20140023403
    Abstract: A developer conveyance device includes a housing and a conveyance member. The conveyance member is supported to the housing and rotates to convey developer. The conveyance member includes a shaft portion, a helical member, and a plurality of reinforcement members. The plurality of reinforcement members are disposed in a circumferential direction of rotation of the conveyance member.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 23, 2014
    Inventors: Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi
  • Patent number: 8620171
    Abstract: A transfer device includes a transfer belt, a transfer roller and a tension roller over which the transfer belt is passed in a tensioned condition and which is made to be in an electrically floated state; it also includes a guide member that is installed in the vicinity of the tension roller. A control section, in transfer processing, controls a first switch so that the guide member is in a grounded state while controlling a second switch so that an electric current being caused to flow to the transfer roller becomes a first electric current; and in cleaning processing, controls the first switch so that the guide member is in an electrically floated state while controlling the second switch so that an electric current being caused to flow to the transfer roller becomes a second electric current.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: December 31, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideshi Izumi, Toshiki Takiguchi, Kuniaki Nakano
  • Publication number: 20130315630
    Abstract: A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between the pair of wall portions of the housing. The conveying member conveys developer from one wall portion toward the other. The conveying member includes a spiral member, shaft portions, a rib member, a supporting member and a projecting portion. The spiral member is formed by connecting spiral pieces in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The rib member extends in the conveying direction and bridges adjacent ones of the spiral pieces of the spiral member. The supporting member connects an end part of the rib member in the conveying direction and the shaft portion. The projecting portion projects from the end part of the rib member more toward the wall portion than the supporting member.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 28, 2013
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi
  • Publication number: 20130315629
    Abstract: A developer conveying device includes a housing, a developer conveyance path and a conveying member. The developer conveyance path extends between a pair of wall portions. The conveying member includes a spiral member, an inner wall portion and shaft portions. The spiral member is formed by connecting spiral pieces, each forming one spiral turn, in a conveying direction of the developer and includes a hollow interior formed by the connected spiral pieces. The inner wall portion includes a plurality of planar portions which define the hollow interior of the spiral member and are connected at predetermined angles in a circumferential direction of the rotation of the conveying member. The shaft portions are arranged at opposite end parts of the spiral member, rotatably supported on the wall portions and serve as a rotary shaft for the rotation of the conveying member.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 28, 2013
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Koji Kuramashi, Yoshihiro Yamagishi, Hiroshi Yamazaki, Kuniaki Nakano, Eiji Nimura
  • Publication number: 20130315628
    Abstract: A conveyance device includes a housing, a formation member, and a detection section. The housing has a first conveyance path, a second conveyance path, and a first communication path. The first and second conveyance paths each are a conveyance path for conveying a developer. The first communication path allows a first end portion of the first conveyance path and a first end portion of the second conveyance path to be in communication with each other via a communication surface. The communication surface has a first region and a second region. The formation member forms the second region of the communication surface so that a height of the second region from a bottom portion of the first communication path is lower than a height of the first region from the bottom portion of the first communication path. The detection section detects the amount of the developer.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 28, 2013
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Hiroshi YAMAZAKI, Eiji NIMURA, Kuniaki NAKANO, Koji KURAMASHI, Yoshihiro YAMAGISHI
  • Publication number: 20120121280
    Abstract: An image forming apparatus includes a waste toner box, a base, a detection sensor, a counter and a controller. The waste toner box collects toner not transferred to a sheet but remaining on a surface of a photoreceptor. The base is for placing the waste toner box thereon, and a position of the base changes with a weight of the waste toner box placed thereon. The detection sensor detects the position of the base to detect an amount of toner in the waste toner box placed on the base. The counter counts the number of sheets with images formed thereon. The controller determines whether or not to continue image formation on a sheet on a basis of a signal from the detection sensor and the counter.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 17, 2012
    Inventors: Kuniaki NAKANO, Toshiki Takiguchi
  • Publication number: 20120002996
    Abstract: A transfer device includes a transfer belt, a transfer roller and a tension roller over which the transfer belt is passed in a tensioned condition and which is made to be in an electrically floated state; it also includes a guide member that is installed in the vicinity of the tension roller. A control section, in transfer processing, controls a first switch so that the guide member is in a grounded state while controlling a second switch so that an electric current being caused to flow to the transfer roller becomes a first electric current; and in cleaning processing, controls the first switch so that the guide member is in an electrically floated state while controlling the second switch so that an electric current being caused to flow to the transfer roller becomes a second electric current.
    Type: Application
    Filed: June 16, 2011
    Publication date: January 5, 2012
    Inventors: Hideshi IZUMI, Toshiki TAKIGUCHI, Kuniaki NAKANO
  • Publication number: 20110249986
    Abstract: A transfer device includes an intermediate transfer belt, and a plurality of intermediate transfer rollers. A most upstream side intermediate transfer roller which is located most upstream in a moving direction of the intermediate transfer belt has a rotational axis arranged downstream from a rotational axis of a most upstream side photoreceptor drum which is located most upstream in the moving direction of the intermediate transfer belt when the most upstream side intermediate transfer roller is in its pressing position, while a most downstream side intermediate transfer roller which is located most downstream in the moving direction of the intermediate transfer belt has a rotational axis arranged upstream from a rotational axis of a most downstream side photoreceptor drum which is located most downstream in the moving direction of the intermediate transfer belt when the most downstream side intermediate transfer roller is in its pressing position.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 13, 2011
    Inventor: KUNIAKI NAKANO
  • Patent number: 7917071
    Abstract: An image forming apparatus includes a transfer belt unit which has an intermediate transfer belt for supporting toner images and primary transfer rollers for pressing the intermediate transfer belt against corresponding photoreceptor drums and moves the intermediate transfer belt along the surface of each photoreceptor drum to transfer the toner images to the intermediate transfer belt. The intermediate transfer belt is formed so as to be 30 ?m to 50 ?m in average thickness, each primary transfer roller is arranged at a position, along the moving direction of the intermediate transfer belt, which is deviated downstream with respect to the moving direction from the position where the intermediate transfer belt is in contact with the photoreceptor and which is projected toward the photoreceptor drum side so as to press the intermediate transfer belt against photoreceptor with a nip pressure ranging from 10 gf/cm2 to 40 gf/cm2.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: March 29, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masashi Hirai, Mikio Kakui, Yoshiaki Masuda, Susumu Murakami, Kuniaki Nakano, Kazuaki Ishikawa, Tomomi Tanaka
  • Patent number: 7872420
    Abstract: In a metal halide lamp having a rated lamp wattage of greater than or equal to 450 W, which includes: a translucent ceramic arc tube enclosure including: a main tube inside which a discharge space is formed; and two narrow tubes having smaller diameter than the main tube, each connected to either end of the main tube; two electrodes; and a metal halide provided inside the arc tube enclosure, in which one of the two electrodes is disposed so that it protrudes inside the main tube from inside of one of the two narrow tubes, and the other one of the two electrodes is disposed so that it protrudes inside the main tube from the other one of the two narrow tubes, and when the rated lamp wattage is denoted by W (watt), an inside diameter of the main tube by D (mm), an electrode protruding length which is the distance from boundary between the main tube and the narrow tubes to an end of the electrode by L (mm), and the distance between ends of the two electrodes by E (mm), a bulb wall loading G (watt/cm2) represented
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: January 18, 2011
    Assignee: GS Yuasa International Ltd.
    Inventors: Kazuhiko Kawasaki, Shinji Taniguchi, Kuniaki Nakano
  • Patent number: 7796919
    Abstract: For an electrostatic latent image formed on an image carrier (31b), besides an operation forming an “image forming electrostatic latent image” used to form the primary image, an operation is executed that forms an “electrostatic latent image for removing developer” for removing developer that resides on a developer supply member (53a) for a predetermined time period onto the image carrier (31b). Thus, developer is nearly eliminated from residing on this developer supply member (53a) in an overcharged state for a long period of time, and generation of a fogged image is avoided as much as possible.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: September 14, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Susumu Murakami, Yoshiaki Kojoh, Takahisa Narikiyo, Kuniaki Nakano, Yoshie Iwakura
  • Patent number: 7725052
    Abstract: An ion generating device provided in an image forming apparatus of the present invention as a charging device for charging before a first transfer, a charging device for charging before a second transfer, or a charge device for charging an electrostatic latent image is arranged such that a discharge electrode can move with respect to a dielectric material and the relative positions of the discharge electrode and the dielectric material can be changed. This makes it possible to provide: a long-life ion generating device whose life has been extended by making effective use of a dielectric material; and an image forming apparatus including the ion generating device.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: May 25, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masashi Hirai, Kuniaki Nakano, Kazuaki Ishikawa
  • Patent number: 7704651
    Abstract: A radiographic image conversion panel containing a substrate having thereon a phosphor layer formed by a vapor-accumulating method, wherein the phosphor layer has a thickness distribution of not more than ±20%, the thickness distribution being defined by the formula: ((Dmax?Dmin)/(Dmax+Dmin))×100, provided that Dmax is a maximum thickness of the phosphor layer; and Dmin is a minimum thickness of the phosphor layer.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: April 27, 2010
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Hideki Shibuya, Kuniaki Nakano, Shigetami Kasai
  • Patent number: 7613421
    Abstract: A fixing device includes a fixing roller for fixing a toner image transferred onto a sheet and conveying the sheet along a conveyance path, and a separating mechanism for separating the sheet from the fixing roller. The separating mechanism includes a claw member having a tip portion in contact with the outer circumferential surface of the fixing roller to separate the sheet from the fixing roller, a holder member for holding the claw member, and a rotary member rotatably held in the holder member downstream of the tip portion relative to the conveyance path and adapted to guide the sheet separated from the fixing roller to a downstream side along the conveyance path while being rotated. The holder member has a guiding portion for guiding the sheet to the rotary member on the conveyance path between the tip portion of the claw member and the rotary member.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: November 3, 2009
    Assignee: Kyocera Mita Corporation
    Inventors: Yoshiharu Kanematsu, Kuniaki Nakano, Shinichi Uchida