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).

  • Patent number: 10303092
    Abstract: A fixing device includes a fixing member, a pressing member, a pressure adjustment part and a linkage part. The pressing member forms a pressing area with the fixing member. The pressure adjustment part moves one of the fixing member and the pressing member in a direction close to the other of the fixing member and the pressing member to increase a pressure of the pressing area and moves one of the fixing member and the pressing member in a direction away from the other of the fixing member and the pressing member to decrease the pressure of the pressing area. The linkage part transmits an operation to decrease the pressure of the pressing area to the fixing member and then moves the fixing member along an axial direction.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: May 28, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki Nakano
  • Publication number: 20190011866
    Abstract: A fixing device includes a fixing member, a pressing member, a pressure adjustment part and a linkage part. The pressing member forms a pressing area with the fixing member. The pressure adjustment part moves one of the fixing member and the pressing member in a direction close to the other of the fixing member and the pressing member to increase a pressure of the pressing area and moves one of the fixing member and the pressing member in a direction away from the other of the fixing member and the pressing member to decrease the pressure of the pressing area. The linkage part transmits an operation to decrease the pressure of the pressing area to the fixing member and then moves the fixing member along an axial direction.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 10, 2019
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki NAKANO
  • Patent number: 10082754
    Abstract: A fixing device includes a fixing member, a pressing member, a charger, and adjusting part. The fixing member heats toner images on media. The pressing member forms nips with the fixing member and presses the media. The charger uses a corona discharge that occurs in an electric field generated around a discharging electrode so as to charge the fixing member to a same polarity of toner in the toner images. The adjusting part increases a bias applied to the discharging electrode in accordance with increase of a cumulative number calculated by accumulating a number of the media on which the toner images are fixed or increase of a cumulative printing amount calculated by multiplying a printing rate that indicates a ratio of an area of the toner images to an area of the media by the cumulative number.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: September 25, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kenichi Kasama, Akihiro Kondo, Kuniaki Nakano
  • Publication number: 20180196382
    Abstract: A fixing device includes a fixing member, a pressing member, a charger, and adjusting part. The fixing member heats toner images on media. The pressing member forms nips with the fixing member and presses the media. The charger uses a corona discharge that occurs in an electric field generated around a discharging electrode so as to charge the fixing member to a same polarity of toner in the toner images. The adjusting part increases a bias applied to the discharging electrode in accordance with increase of a cumulative number calculated by accumulating a number of the media on which the toner images are fixed or increase of a cumulative printing amount calculated by multiplying a printing rate that indicates a ratio of an area of the toner images to an area of the media by the cumulative number.
    Type: Application
    Filed: December 14, 2017
    Publication date: July 12, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Kenichi KASAMA, Akihiro KONDO, Kuniaki NAKANO
  • Patent number: 9841709
    Abstract: A fixing device includes a first fixing member, a second fixing member, and a charge application portion. The first fixing member contacts unfixed toner on a sheet conveyed along a conveyance path. The second fixing member forms a nip portion between itself and the first fixing member such that the sheet passes through the nip portion. The charge application portion applies an electric charge to the unfixed toner on the sheet and to an outer circumferential surface of the first fixing member at a region on an upstream side of the nip portion in a movement direction of the outer circumferential surface, by causing a corona discharge to be generated between a discharge electrode and a counter electrode that are disposed apart from the outer circumferential surface of the first fixing member.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: December 12, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki Nakano
  • Publication number: 20170299989
    Abstract: A fixing device includes a first fixing member, a second fixing member, and a charge application portion. The first fixing member contacts unfixed toner on a sheet conveyed along a conveyance path. The second fixing member forms a nip portion between itself and the first fixing member such that the sheet passes through the nip portion. The charge application portion applies an electric charge to the unfixed toner on the sheet and to an outer circumferential surface of the first fixing member at a region on an upstream side of the nip portion in a movement direction of the outer circumferential surface, by causing a corona discharge to be generated between a discharge electrode and a counter electrode that are disposed apart from the outer circumferential surface of the first fixing member.
    Type: Application
    Filed: March 14, 2017
    Publication date: October 19, 2017
    Inventor: Kuniaki Nakano
  • Patent number: 9389542
    Abstract: A unit assembly (10) includes an image forming unit (20) and an intermediate transfer unit (40), and is configured insertably/removably with respect to an apparatus main body. The image forming unit (20) includes a plurality of process units (200A to 200D) and a joint member (80) that joints the plurality of process units (200A to 200D). The intermediate transfer unit (40) is held by the image forming unit (20). The intermediate transfer unit (40) and the joint member (80) have a first positioning section (611, 612) for mutually relative positioning.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: July 12, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kuniaki Nakano, Naoaki Kurimoto
  • Patent number: 9342043
    Abstract: A unit assembly (10) is provided with an image forming unit (20) and an intermediate transfer unit (40), and is configured to be capable of being inserted into and removed from an apparatus body (110). The image forming unit (20) has first processing units (200A to 200D), developing units (4A to 4D), a positioning portion, and a link member (80). The positioning portion is provided in each of the developing units (4A to 4D) and determines the mutual relative positions of the developing units (4A to 4D). The link member (80) links the developing units (4A to 4D) to each other. The intermediate transfer unit (40) is held by the image forming unit (20).
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: May 17, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Naoaki Kurimoto, Kuniaki Nakano, Hiroshi Kubota
  • Patent number: 9304456
    Abstract: A fixing device includes a fixing belt, a pressuring member, a heating source, a heat conducting member and a reflecting member. The fixing belt is arranged rotatably. The pressuring member is arranged outside the fixing belt and comes into pressure contact with the fixing belt to form a fixing nip. The heating source is arranged inside the fixing belt to emit radiant heat. The heat conducting member comes into contact with an inner circumference face of the fixing belt and absorbs the radiant heat emitted from the heating source. The reflecting member includes a reflecting part and a nip forming part. The reflecting part reflects the radiant heat emitted from the heating source toward the heat conducting member. The nip forming part is unified with the reflecting part and comes into contact with the inner circumference face of the fixing belt to press the fixing belt to the pressuring member.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: April 5, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki Nakano
  • Patent number: 9250604
    Abstract: An image forming apparatus (1) includes, as working sections, a paper output tray (16), a paper feeding cassette (13), and attachment sections to which toner cartridges (71) through (74), a waste toner container (69), and a unit assembly (11) are attached. Out of the working sections, a high-frequency working section with a high working frequency is provided on a front surface of the image forming apparatus, and a low-frequency working section with a low working frequency is provided on a side surface of the image forming apparatus.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: February 2, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Naoaki Kurimoto, Kuniaki Nakano, Hiroshi Kubota
  • Patent number: 9229392
    Abstract: A fixing device includes a fixing belt, a pressuring member, a nip forming member, a supporting member, a heating source, a heat conducting member, and a reflecting member. The pressuring member comes into pressure contact with the fixing belt to form a fixing nip. The nip forming member presses the fixing belt toward the pressuring member. The heat conducting member comes into contact with an inner circumference face of the fixing belt and absorbs a radiant heat emitted from the heating source. The reflecting member includes a reflecting part and a regulating part. The reflecting part reflects the radiant heat emitted to the supporting member toward the heat conducting member. The regulating part is unified with the reflecting part and comes into contact with the inner circumference face of the fixing belt to regulate looseness of the fixing belt.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: January 5, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki Nakano
  • Patent number: 9158233
    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: Grant
    Filed: May 17, 2013
    Date of Patent: October 13, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hiroshi Yamazaki, Eiji Nimura, Kuniaki Nakano, Koji Kuramashi, Yoshihiro Yamagishi
  • Publication number: 20150253695
    Abstract: A unit assembly (10) includes an image forming unit (20) and an intermediate transfer unit (40), and is configured insertably/removably with respect to an apparatus main body. The image forming unit (20) includes a plurality of process units (200A to 200D) and a joint member (80) that joints the plurality of process units (200A to 200D). The intermediate transfer unit (40) is held by the image forming unit (20). The intermediate transfer unit (40) and the joint member (80) have a first positioning section (611, 612) for mutually relative positioning.
    Type: Application
    Filed: November 13, 2013
    Publication date: September 10, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kuniaki Nakano, Naoaki Kurimoto
  • Patent number: 9104136
    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: Grant
    Filed: July 17, 2013
    Date of Patent: August 11, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi
  • Publication number: 20150205249
    Abstract: A unit assembly (10) is provided with an image forming unit (20) and an intermediate transfer unit (40), and is configured to be capable of being inserted into and removed from an apparatus body (110). The image forming unit (20) has first processing units (200A to 200D), developing units (4A to 4D), a positioning portion, and a link member (80). The positioning portion is provided in each of the developing units (4A to 4D) and determines the mutual relative positions of the developing units (4A to 4D). The link member (80) links the developing units (4A to 4D) to each other. The intermediate transfer unit (40) is held by the image forming unit (20).
    Type: Application
    Filed: July 25, 2013
    Publication date: July 23, 2015
    Inventors: Naoaki Kurimoto, Kuniaki Nakano, Hiroshi Kubota
  • Patent number: 9081337
    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: Grant
    Filed: August 28, 2014
    Date of Patent: July 14, 2015
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Kuniaki Nakano, Yuuya Shimohora
  • Publication number: 20150185692
    Abstract: An image forming apparatus (1) includes, as working sections, a paper output tray (16), a paper feeding cassette (13), and attachment sections to which toner cartridges (71) through (74), a waste toner container (69), and a unit assembly (11) are attached. Out of the working sections, a high-frequency working section with a high working frequency is provided on a front surface of the image forming apparatus, and a low-frequency working section with a low working frequency is provided on a side surface of the image forming apparatus.
    Type: Application
    Filed: July 17, 2013
    Publication date: July 2, 2015
    Inventors: Naoaki Kurimoto, Kuniaki Nakano, Hiroshi Kubota
  • Patent number: 9008553
    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: Grant
    Filed: May 22, 2013
    Date of Patent: April 14, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kuniaki Nakano, Eiji Nimura, Koji Kuramashi, Hiroshi Yamazaki, Yoshihiro Yamagishi
  • Publication number: 20150063882
    Abstract: A fixing device includes a fixing belt, a pressuring member, a nip forming member, a supporting member, a heating source, a heat conducting member, and a reflecting member. The pressuring member comes into pressure contact with the fixing belt to form a fixing nip. The nip forming member presses the fixing belt toward the pressuring member. The heat conducting member comes into contact with an inner circumference face of the fixing belt and absorbs a radiant heat emitted from the heating source. The reflecting member includes a reflecting part and a regulating part. The reflecting part reflects the radiant heat emitted to the supporting member toward the heat conducting member. The regulating part is unified with the reflecting part and comes into contact with the inner circumference face of the fixing belt to regulate looseness of the fixing belt.
    Type: Application
    Filed: August 5, 2014
    Publication date: March 5, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Kuniaki NAKANO
  • Publication number: 20150063883
    Abstract: A fixing device includes a fixing belt, a pressuring member, a heating source, a heat conducting member and a reflecting member. The fixing belt is arranged rotatably. The pressuring member is arranged outside the fixing belt and comes into pressure contact with the fixing belt to form a fixing nip. The heating source is arranged inside the fixing belt to emit radiant heat. The heat conducting member comes into contact with an inner circumference face of the fixing belt and absorbs the radiant heat emitted from the heating source. The reflecting member includes a reflecting part and a nip forming part. The reflecting part reflects the radiant heat emitted from the heating source toward the heat conducting member. The nip forming part is unified with the reflecting part and comes into contact with the inner circumference face of the fixing belt to press the fixing belt to the pressuring member.
    Type: Application
    Filed: August 5, 2014
    Publication date: March 5, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Kuniaki NAKANO