Patents by Inventor Ruki Midorikawa

Ruki Midorikawa 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: 10866544
    Abstract: A cooling device includes a sheet conveying roller, and a duct. The sheet conveying roller is configured to convey a sheet in a sheet conveyance direction. The duct is configured to convey air to a sheet conveyance passage. The duct includes a first blowing port configured to blow air toward the sheet conveyance passage, and a second blowing port configured to blow air toward the sheet conveying roller.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 15, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Ruki Midorikawa
  • Publication number: 20200387102
    Abstract: A sheet conveying device includes a first duct, a second duct, and a switching member. The first duct is disposed at a first side of a sheet conveyance passage to face a first face of a sheet passing the sheet conveyance passage and has a first air blowing port through which air is blown toward the sheet conveyance passage. The second duct is disposed at a second side of the sheet conveyance passage to face a second face of the sheet passing the sheet conveyance passage and has a second air blowing port through which air is blown toward the sheet conveyance passage. The switching member is disposed downstream from the first and second air blowing ports in a sheet conveyance direction and configured to switch the sheet conveyance passage. No pair of rollers is disposed between the switching member and each of the first and second blowing ports.
    Type: Application
    Filed: May 19, 2020
    Publication date: December 10, 2020
    Applicant: Ricoh Company, Ltd.
    Inventor: Ruki Midorikawa
  • Publication number: 20200218181
    Abstract: A cooling device includes a sheet conveying roller, and a duct. The sheet conveying roller is configured to convey a sheet in a sheet conveyance direction. The duct is configured to convey air to a sheet conveyance passage. The duct includes a first blowing port configured to blow air toward the sheet conveyance passage, and a second blowing port configured to blow air toward the sheet conveying roller.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 9, 2020
    Applicant: Ricoh Company, Ltd.
    Inventor: Ruki MIDORIKAWA
  • Patent number: 10534315
    Abstract: A cooling device includes a duct, an openable cover, and a moving mechanism. The duct is disposed opposite a sheet conveyance path to send air to the sheet conveyance path. The cover exposes the sheet conveyance path when the cover is opened. The moving mechanism moves the duct independently of the cover between an opposite position opposite the sheet conveyance path and a retracted position.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: January 14, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventor: Ruki Midorikawa
  • Publication number: 20190302690
    Abstract: A cooling device includes a duct, an openable cover, and a moving mechanism. The duct is disposed opposite a sheet conveyance path to send air to the sheet conveyance path. The cover exposes the sheet conveyance path when the cover is opened. The moving mechanism moves the duct independently of the cover between an opposite position opposite the sheet conveyance path and a retracted position.
    Type: Application
    Filed: March 6, 2019
    Publication date: October 3, 2019
    Applicant: Ricoh Company, Ltd.
    Inventor: Ruki MIDORIKAWA
  • Publication number: 20190248609
    Abstract: A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.
    Type: Application
    Filed: January 22, 2019
    Publication date: August 15, 2019
    Applicant: Ricoh Company, Ltd.
    Inventor: Ruki Midorikawa
  • Patent number: 10078301
    Abstract: An image forming apparatus includes an apparatus body accommodating an image forming device, a foreign object detector that detects a foreign object beside the apparatus body, and a detector holding unit that holds the foreign object detector. The foreign object detector and the detector holding unit are movable together into the apparatus body.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 18, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Ruki Midorikawa, Shogo Terakawa, Tetsuji Nishikawa, Hiroshi Ishii, Kohta Takenaka, Hiroaki Murakami, Hidehiko Maeda, Gaku Hosono
  • Patent number: 10048628
    Abstract: An image forming apparatus includes an apparatus body accommodating an image forming device, a foreign object detector that detects a foreign object beside the apparatus body, and a detector holding unit that holds the foreign object detector. The foreign object detector and the detector holding unit are movable together into the apparatus body.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 14, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Ruki Midorikawa, Shogo Terakawa, Tetsuji Nishikawa, Hiroshi Ishii, Kohta Takenaka, Hiroaki Murakami, Hidehiko Maeda, Gaku Hosono
  • Publication number: 20170235264
    Abstract: An image forming apparatus includes an apparatus body accommodating an image forming device, a foreign object detector that detects a foreign object beside the apparatus body, and a detector holding unit that holds the foreign object detector. The foreign object detector and the detector holding unit are movable together into the apparatus body.
    Type: Application
    Filed: January 17, 2017
    Publication date: August 17, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Ruki Midorikawa, Shogo Terakawa, Tetsuji Nishikawa, Hiroshi Ishii, Kohta Takenaka, Hiroaki Murakami, Hidehiko Maeda, Gaku Hosono