Patents by Inventor Toshikane Nishii

Toshikane Nishii 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: 20210032054
    Abstract: A sheet guiding device includes a cover unit, a swing guide, a link member, and a contact member. The cover unit is configured to be openably disposed on a housing of an image forming apparatus. The swing guide is configured to move between a guide position at which the swing guide is open to guide a sheet and a retracted position at which the swing guide is closed. The swing guide is configured to move from the retracted position to the guide position along with closing movement of the cover unit. The link member has one end configured to be held by the housing and an opposite end engaged with the swing guide. The contact member is disposed on the cover unit. The contact member is configured to contact the link member to rotate the link member in the closing movement of the cover unit.
    Type: Application
    Filed: July 7, 2020
    Publication date: February 4, 2021
    Applicant: Ricoh Company, Ltd.
    Inventor: Toshikane NISHII
  • Patent number: 10882332
    Abstract: A mobile image forming apparatus includes a body, a recording device supported by the body and configured to form an image on a recording medium, a roller provided to the body and configured to rotate on the recording medium while the body is moved in a scanning direction for image formation. The mobile image forming apparatus further includes a switching device configured to switch a state of the mobile image forming apparatus during image formation between a roller contact state in which the roller is in contact with the recording medium and a roller contactless state in which the roller is contactless with the recording medium.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 5, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshikane Nishii, Hiroshi Ishii, Kunihiko Nishioka, Mitsutaka Nakamura, Akiyoshi Tanaka, Yasunari Harada
  • Patent number: 10696063
    Abstract: A mobile image forming apparatus includes a body; a recording device supported by the body and configured to form an image on a recording medium, and at least one roller provided to the body and configured to rotate on the recording medium while the body is moved in a scanning direction for image formation. The mobile image forming apparatus further includes at least one pressing member disposed in contact with the at least one roller and configured to press the at least one roller in a roller axial direction.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: June 30, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshikane Nishii, Hiroshi Ishii, Kunihiko Nishioka, Akiyoshi Tanaka, Yasunari Harada, Mitsutaka Nakamura
  • Publication number: 20190283467
    Abstract: An image forming apparatus includes a body, a recording device supported by the body and including a recording section configured to form an image on a recording medium, and two roller portions provided to the body. The two roller portions are configured to rotate on the recording medium while the body is moved in a scanning direction for image formation. The two roller portions are combined into a roller unit to rotate coaxially.
    Type: Application
    Filed: January 9, 2019
    Publication date: September 19, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshikane Nishii, Hiroshi ISHII, Kunihiko NISHIOKA, Akiyoshi TANAKA, Yasunari HARADA, Mitsutaka NAKAMURA
  • Publication number: 20190283452
    Abstract: A mobile image forming apparatus includes a body, a recording device supported by the body and configured to form an image on a recording medium, a roller provided to the body and configured to rotate on the recording medium while the body is moved in a scanning direction for image formation. The mobile image forming apparatus further includes a switching device configured to switch a state of the mobile image forming apparatus during image formation between a roller contact state in which the roller is in contact with the recording medium and a roller contactless state in which the roller is contactless with the recording medium.
    Type: Application
    Filed: December 11, 2018
    Publication date: September 19, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshikane NISHII, Hiroshi Ishii, Kunihiko Nishioka, Mitsutaka Nakamura, Akiyoshi Tanaka, Yasunari Harada
  • Publication number: 20190283453
    Abstract: A mobile image forming apparatus includes a body; a recording device supported by the body and configured to form an image on a recording medium, and at least one roller provided to the body and configured to rotate on the recording medium while the body is moved in a scanning direction for image formation. The mobile image forming apparatus further includes at least one pressing member disposed in contact with the at least one roller and configured to press the at least one roller in a roller axial direction.
    Type: Application
    Filed: December 27, 2018
    Publication date: September 19, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshikane Nishii, Hiroshi Ishii, Kunihiko Nishioka, Akiyoshi Tanaka, Yasunari Harada, Mitsutaka Nakamura
  • Patent number: 10160613
    Abstract: A sheet feeder, which is included in an image forming apparatus, includes a sheet loader on which a sheet is loaded, a sheet feeding body to feed the sheet from the sheet loader, and a sheet separator disposed to contact the sheet feeding body. The sheet is fed at a first average sheet feeding speed at which the sheet feeding body is in contact with the sheet separator without holding the sheet with the sheet separator. The sheet is fed at a second average sheet feeding speed at which the sheet feeding body is holding the sheet with the sheet separator. The first average sheet feeding speed is set smaller than the second average sheet feeding speed.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: December 25, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoya Tanaka, Mizuna Tanaka, Toshikane Nishii, Ikuo Fujii, Hirofumi Horita
  • Patent number: 9873578
    Abstract: A recording medium conveying device includes a guide, a shaft, and a positioner. The guide guides a recording medium along a conveyance path to a predetermined direction. The shaft is disposed near the conveyance path. The guide is disposed between the conveyance path and the shaft. The positioner positions the guide in an axial direction of the shaft. The guide is fixed by both the positioner and the shaft. The positioner is fixed separately from the shaft.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: January 23, 2018
    Assignee: Ricoh Company, Ltd.
    Inventor: Toshikane Nishii
  • Patent number: 9523955
    Abstract: A sheet feeder of a friction pad separation type, which can be included in an image forming apparatus, includes a feeder body, a rotary feed body, a separation body, a holder, and a leaf spring. The rotary feed body is disposed in the feeder body and feeds a recording medium along a sheet conveying direction. The separation body is fixed to the feeder body while facing the rotary feed body. The separation body separates the recording medium with the rotary feed body. The holder has a rotary shaft and holds the separation body while being rotatably supported by the rotary shaft. The leaf spring has a flexible deforming part that contacts an area adjacent to the rotary shaft and a line of action of a pressing force of the flexible deforming part passing close by the rotary shaft.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 20, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hirofumi Horita, Mizuna Tanaka, Toshikane Nishii, Ikuo Fujii, Tomoya Tanaka
  • Publication number: 20160167904
    Abstract: A recording medium conveying device includes a guide, a shaft, and a positioner. The guide guides a recording medium along a conveyance path to a predetermined direction. The shaft is disposed near the conveyance path. The guide is disposed between the conveyance path and the shaft. The positioner positions the guide in an axial direction of the shaft. The guide is fixed by both the positioner and the shaft. The positioner is fixed separately from the shaft.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 16, 2016
    Applicant: Ricoh Company, Ltd.
    Inventor: Toshikane NISHII
  • Patent number: 9352916
    Abstract: A sheet conveying device includes a first rotating member, a second rotating member, and a biasing unit that biases the second rotating member toward the first rotating member. The first and second rotating members pinch a sheet therebetween and convey the sheet in a sheet conveying direction. The second rotating member includes a small-diameter portion that faces a conveying portion of the first rotating member, and a large-diameter portion at a position axially displaced from the conveying portion. The second rotating member can change its orientation to an orientation where a rotating shaft of the second rotating member is tilted relative to a rotating shaft of the first rotating member as viewed in the sheet conveying direction, thereby moving a position of an end portion of the second rotating member on a side of the large-diameter portion away from the rotating shaft of the first rotating member.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: May 31, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Toshikane Nishii, Haruyuki Honda, Masanori Namba, Mitsutaka Nakamura
  • Patent number: 9346640
    Abstract: A sheet feeder includes a feeding member to contact a sheet and feed the sheet downstream in a sheet conveyance direction, a friction pad disposed facing the feeding member to contact the feeding member, and a receiving table including a pad mount to hold a side of the friction pad opposite a nip between the friction pad and the feeding member. The friction pad includes a fixed range secured to the pad mount upstream from the nip and a movable range extending downstream the nip in the sheet conveyance direction. A first friction force of the pad mount to act on the movable range of the friction pad is smaller than a second friction force of the sheet to act on the movable range of the friction pad.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: May 24, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hirofumi Horita, Ikuo Fujii, Mizuna Tanaka, Tomoya Tanaka, Toshikane Nishii, Masaki Narita, Yoshitake Shimizu, Yutaka Aso, Takashi Fujimoto
  • Patent number: 9342037
    Abstract: An image forming apparatus includes an apparatus body, a manual operating unit, at least a part of which being exposed to an outside of the apparatus body and a part of which included inside the apparatus body being exposed to the outside by manually operating from the outside, a condensation part to which moist air in the apparatus body contacts to dew-condense to a water droplet, and a recovery container part containing the water droplet generated by the condensation part and being disposed on an inner surface of the manual operating unit included inside the apparatus body.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: May 17, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masanori Namba, Toshikane Nishii, Mitsutaka Nakamura, Haruyuki Honda
  • Publication number: 20160109841
    Abstract: A sheet feeder of a friction pad separation type, which can be included in an image forming apparatus, includes a feeder body, a rotary feed body, a separation body, a holder, and a leaf spring. The rotary feed body is disposed in the feeder body and feeds a recording medium along a sheet conveying direction. The separation body is fixed to the feeder body while facing the rotary feed body. The separation body separates the recording medium with the rotary feed body. The holder has a rotary shaft and holds the separation body while being rotatably supported by the rotary shaft. The leaf spring has a flexible deforming part that contacts an area adjacent to the rotary shaft and a line of action of a pressing force of the flexible deforming part passing close by the rotary shaft.
    Type: Application
    Filed: October 16, 2015
    Publication date: April 21, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Hirofumi Horita, Mizuna Tanaka, Toshikane Nishii, Ikuo Fujii, Tomoya Tanaka
  • Patent number: 9244417
    Abstract: An image forming apparatus includes an image bearer, an image forming unit, an intermediate transfer member, a secondary transfer member, an image detector, a computing device, and a conveyor device. The computing device calculates a traveling speed of the intermediate transfer member based on detection information provided by the image detector. The conveyor device continuously transports to a secondary transfer portion a plurality of recording media one by one at a predetermined interval between successive recording media. The image forming unit forms a test image at a space between successive recording-medium contact regions of the intermediate transfer member at which the recording medium contacts the intermediate transfer member. A travel distance of the intermediate transfer member from the detection position on the intermediate transfer member to the secondary transfer portion in a traveling direction thereof is shorter than the space between the successive recording-medium contact regions.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 26, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Mizuna Tanaka, Yuuki Shiga, Kimihiro Tanaka, Toshikane Nishii, Akimitsu Obana
  • Patent number: 9187280
    Abstract: A sheet feeding device includes a feeding device and a detector. The feeding device is configured to feed a sheet to a destination. The detector is configured to detect the sheet at the destination. If the detector does not detect the sheet within a predetermined time after the start of preparation for a feeding operation by the feeding device, it is determined that the sheet is misfed. Further, the start of the feeding operation of a sheet is changed in accordance with the result of detection by the detector of the presence or absence of a sheet standing by at the destination.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 17, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshikane Nishii, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Haruyuki Honda, Mizuna Tanaka
  • Patent number: 9139391
    Abstract: A sheet conveyor, which is incorporated in an image forming apparatus and in which a method of preventing sheet skew is performed, includes a sheet conveying path through which a sheet is conveyed, a first conveying unit disposed in a sheet conveying direction and including a shaft extending in a lateral direction, multiple rollers attached to the shaft along the shaft, and a rotation regulator disposed between each of the multiple rollers and the shaft to idly rotate each of the multiple rollers in a given range about the shaft, a second conveying unit disposed along the sheet conveying path and downstream from the first conveying unit in the sheet conveying direction, and a sheet abutting part provided at the second conveying unit, against which a leading edge of the sheet abuts to form a slack of the sheet to correct skew of the sheet.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 22, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Mitsutaka Nakamura, Masanori Namba, Toshikane Nishii, Haruyuki Honda, Munekazu Hirata
  • Publication number: 20150259164
    Abstract: A sheet feeder includes a feeding member to contact a sheet and feed the sheet downstream in a sheet conveyance direction, a friction pad disposed facing the feeding member to contact the feeding member, and a receiving table including a pad mount to hold a side of the friction pad opposite a nip between the friction pad and the feeding member. The friction pad includes a fixed range secured to the pad mount upstream from the nip and a movable range extending downstream the nip in the sheet conveyance direction. A first friction force of the pad mount to act on the movable range of the friction pad is smaller than a second friction force of the sheet to act on the movable range of the friction pad.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 17, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Hirofumi HORITA, Ikuo FUJII, Mizuna TANAKA, Tomoya TANAKA, Toshikane NISHII, Masaki NARITA, Yoshitake SHIMIZU, Yutaka ASO, Takashi FUJIMOTO
  • Publication number: 20150205252
    Abstract: An image forming apparatus includes an apparatus body, a manual operating unit, at least a part of which being exposed to an outside of the apparatus body and a part of which included inside the apparatus body being exposed to the outside by manually operating from the outside, a condensation part to which moist air in the apparatus body contacts to dew-condense to a water droplet, and a recovery container part containing the water droplet generated by the condensation part and being disposed on an inner surface of the manual operating unit included inside the apparatus body.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masanori NAMBA, Toshikane NISHII, Mitsutaka NAKAMURA, Haruyuki HONDA
  • Publication number: 20150153686
    Abstract: An image forming apparatus includes an image bearer, an image forming unit, an intermediate transfer member, a secondary transfer member, an image detector, a computing device, and a conveyor device. The computing device calculates a traveling speed of the intermediate transfer member based on detection information provided by the image detector. The conveyor device continuously transports to a secondary transfer portion a plurality of recording media one by one at a predetermined interval between successive recording media. The image forming unit forms a test image at a space between successive recording-medium contact regions of the intermediate transfer member at which the recording medium contacts the intermediate transfer member. A travel distance of the intermediate transfer member from the detection position on the intermediate transfer member to the secondary transfer portion in a traveling direction thereof is shorter than the space between the successive recording-medium contact regions.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Mizuna Tanaka, Yuuki Shiga, Kimihiro Tanaka, Toshikane Nishii, Akimitsu Obana