Patents by Inventor Kunihiko Nishioka

Kunihiko Nishioka 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: 20200084333
    Abstract: An image forming apparatus includes a body, an image forming device configured to form an image on a recording medium and supported by the body, an attachment configured to be removably attached to the body, and a cover configured to be removably attached to the body. The cover is configured to cover the attachment attached to the body. The attachment is configured to switch a state in use of the image forming apparatus by attaching and removing of the attachment to and from the body.
    Type: Application
    Filed: June 10, 2019
    Publication date: March 12, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomoya FUJII, Takayuki ANDOH, Masatoshi ISHIDA, Yohei OSANAI, Satoshi NARAI, Kunihiko NISHIOKA, Masashi OTA
  • Publication number: 20200079112
    Abstract: An image forming apparatus includes a recording device configured to record an image on a recording medium, a main body configured to house the recording device, and a cover rotatably attached to the main body. The main body includes a recording face to be disposed opposite the recording medium, a first face positioned opposite the recording face, and a second face positioned between the recording face and the first face. The cover includes a first cover portion configured to cover the first face of the main body, and a second cover portion configured to cover at least a portion of the second face, and the second cover portion is configured to house a battery.
    Type: Application
    Filed: July 25, 2019
    Publication date: March 12, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yohei OSANAI, Takayuki Andoh, Masatoshi Ishida, Satoshi Narai, Tomoya Fujii, Kunihiko Nishioka, Munekazu Hirata, Masashi Ota
  • Patent number: 10427426
    Abstract: A hand-held recording apparatus includes a recording section, a housing, and an indicator. The recording section records an image on a recording material in moving in a scanning direction. The housing houses the recording section. The indicator is movable between an indication position at which the indicator opposes the recording material and indicates a recording area of the image of the recording section and a retracted position at which the indicator is retracted from the indication position.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: October 1, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Muneyuki Okeguchi, Kazuyoshi Matsumoto, Kunihiko Nishioka
  • 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
  • Publication number: 20190071268
    Abstract: A sheet stacker includes a body to stack a sheet, a fence to regulate a position of the sheet, and a support. The body includes a groove extending in a predetermined direction. The support includes a support portion to support the fence and a projection extending in the predetermined direction. The groove engages with the projection in a sheet stacking direction to secure the support. The fence is supported to be rotatable about the support portion of the support.
    Type: Application
    Filed: August 24, 2018
    Publication date: March 7, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Kunihiko Nishioka, Mizuna Tanaka
  • Publication number: 20180361761
    Abstract: A hand-held recording apparatus includes a recording section, a housing, and an indicator. The recording section records an image on a recording material in moving in a scanning direction. The housing houses the recording section. The indicator is movable between an indication position at which the indicator opposes the recording material and indicates a recording area of the image of the recording section and a retracted position at which the indicator is retracted from the indication position.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 20, 2018
    Inventors: Muneyuki Okeguchi, Kazuyoshi Matsumoto, Kunihiko Nishioka
  • Patent number: 9031466
    Abstract: An image forming apparatus includes a body, an image carrier provided in the body and configured to form an image thereon, a first gear to transmit a rotation driving force to the image carrier, a first rotary shaft to which the image carrier and the first gear are attached, a second gear to mesh with the first gear and transmit the rotation driving force to the first gear, a second rotary shaft to which the second gear is attached, a drive source configured to drive to rotate the image carrier via the first gear and the second gear, a first holder to hold the first rotary shaft of the first gear, and a second holder to hold the second rotary shaft of the second gear, and a relative position between the first holder and the second holder therein is adjustable.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 12, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Fujimoto, Kimihiro Tanaka, Kunihiko Nishioka
  • Patent number: 8843050
    Abstract: An image forming apparatus includes an image forming unit, first and second rotary shafts, a drive source to rotate at a predetermined low velocity and a predetermined high velocity, a first rotary transmitter connected between the drive force and the first rotary shaft, a second rotary transmitter connected between the drive force and the second rotary shaft, and a drive block member connected between the drive source and the second rotary shaft to block transmission of the drive force to the second rotary shaft when the drive source rotates at the predetermined high velocity. When the drive source rotates at the predetermined low velocity, the drive source drives the second rotary shaft using a difference in torque between an upper limit in high velocity rotation and an upper limit in low velocity rotation greater than the upper limit in high velocity rotation.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuo Fukushima, Mizuna Tanaka, Kunihiko Nishioka
  • Publication number: 20140119777
    Abstract: An image forming apparatus includes a body, an image carrier provided in the body and configured to form an image thereon, a first gear to transmit a rotation driving force to the image carrier, a first rotary shaft to which the image carrier and the first gear are attached, a second gear to mesh with the first gear and transmit the rotation driving force to the first gear, a second rotary shaft to which the second gear is attached, a drive source configured to drive to rotate the image carrier via the first gear and the second gear, a first holder to hold the first rotary shaft of the first gear, and a second holder to hold the second rotary shaft of the second gear, and a relative position between the first holder and the second holder therein is adjustable.
    Type: Application
    Filed: October 11, 2013
    Publication date: May 1, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takashi FUJIMOTO, Kimihiro TANAKA, Kunihiko NISHIOKA
  • Patent number: 8641031
    Abstract: A sheet feeder stackable in multiple levels and attachable to an image forming apparatus. The sheet feeder includes a drive source, a drive transmission unit, a first drive coupling unit, a second drive coupling unit, a sheet feed roller, and a grip roller. During operation of multiple sheet feeders stacked in the multiple levels, the drive transmission unit and the first drive coupling unit, both provided to a given sheet feeder of the multiple sheet feeders, are coupled to each other, and the first drive coupling unit of the given sheet feeder is coupled to the grip roller of an adjacent sheet feeder disposed immediately below the given sheet feeder to drive the grip roller of each of the multiple sheet feeders substantially in synchrony.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: February 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kunihiko Nishioka, Tatsuo Fukushima, Mizuna Tanaka
  • Publication number: 20130207335
    Abstract: A sheet feeder stackable in multiple levels and attachable to an image forming apparatus. The sheet feeder includes a drive source, a drive transmission unit, a first drive coupling unit, a second drive coupling unit, a sheet feed roller, and a grip roller. During operation of multiple sheet feeders stacked in the multiple levels, the drive transmission unit and the first drive coupling unit, both provided to a given sheet feeder of the multiple sheet feeders, are coupled to each other, and the first drive coupling unit of the given sheet feeder is coupled to the grip roller of an adjacent sheet feeder disposed immediately below the given sheet feeder to drive the grip roller of each of the multiple sheet feeders substantially in synchrony.
    Type: Application
    Filed: January 25, 2013
    Publication date: August 15, 2013
    Inventors: Kunihiko NISHIOKA, Tatsuo FUKUSHIMA, Mizuna TANAKA
  • Publication number: 20110280626
    Abstract: An image forming apparatus includes an image forming unit, first and second rotary shafts, a drive source to rotate at a predetermined low velocity and a predetermined high velocity, a first rotary transmitter connected between the drive force and the first rotary shaft, a second rotary transmitter connected between the drive force and the second rotary shaft, and a drive block member connected between the drive source and the second rotary shaft to block transmission of the drive force to the second rotary shaft when the drive source rotates at the predetermined high velocity. When the drive source rotates at the predetermined low velocity, the drive source drives the second rotary shaft using a difference in torque between an upper limit in high velocity rotation and an upper limit in low velocity rotation greater than the upper limit in high velocity rotation.
    Type: Application
    Filed: April 18, 2011
    Publication date: November 17, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuo Fukushima, Mizuna Tanaka, Kunihiko Nishioka
  • Patent number: 5673477
    Abstract: A probe unit comprising a base in the form of a rectangular plate and a plurality of ultrathin metal wires which are partially secured to the base at a given pitch. Each of the wires comprises a straight portion firmly secured to the base, a bent portion located on an extension of the straight portion, and an inclined portion inclined from the bent portion outwardly of the base toward an inspected surface of an object to be inspected, and an R-shaped portion extending from the front end of the inclined portion outwardly of the base. The bent portion protrudes outwardly from the base and is bent toward the inspected surface. The R-shaped portion forms each probe pin bearing against the inspected surface.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: October 7, 1997
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Shigeo Hattori, Toshiaki Yutori, Nobuhiro Hara, Kunihiko Nishioka, Masahiko Uchimura, Toshiaki Okumura, Masakazu Nakao
  • Patent number: 4326946
    Abstract: A process of producing a solvent useful in coal liquefaction which includes separating the heavy liquid produced from the liquefaction of coal into a fraction boiling at 200.degree. to 210.degree. C., a fraction boiling at 211.degree. to 230.degree. C., and a fraction boiling at not less than 231.degree. subjecting the fraction boiling at 211.degree. to 230.degree. C. to a hydrogenation treatment to produce a hydrogenated fraction, mixing the hydrogenated fraction with the fraction boiling at 200.degree. to 210.degree. C. to form a resultant mixture, and mixing a portion of the resultant mixture with a portion of the fraction boiling at not less than 231.degree. C. Alternately, the solvent is produced from the heavy liquid by separating it into a fraction boiling at 200.degree. C. to 210.degree. C., a fraction boiling at 211.degree. C. to 230.degree. C., a fraction boiling at 231.degree. C. to 250.degree. C., a fraction boiling at 251.degree. C. to 350.degree. C. and a fraction boiling at not less than 351.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: April 27, 1982
    Assignee: Sumitomo Metal Industries Ltd.
    Inventors: Tsukasa Chikata, Yoshihiko Sunami, Keiichi Sasaki, Kunihiko Nishioka
  • Patent number: 4303498
    Abstract: A solvent useful in coal liquefaction is obtained by separating the heavy liquid resulting from coal liquefaction into a fraction boiling at temperatures of between 200.degree. to 210.degree. C., a fraction boiling at temperatures between 211.degree. to 250.degree. C., and a fraction boiling at not less than 250.degree. C., subjecting the fraction boiling at between 211.degree. C. to 250.degree. C. to two hydrogenation treatments, mixing the hydrogenated product with the fraction boiling at between 200.degree. to 210.degree. C. which optionally has been hydrogenated to form a resultant mixture and mixing a portion of the resultant mixture with the fraction boiling at not less than 250.degree. C. which has been optionally hydrogenated.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: December 1, 1981
    Assignee: Sumitomo Metal Industries Limited
    Inventors: Tsukasa Chikata, Yoshihiko Sunami, Keiichi Sasaki, Kunihiko Nishioka
  • Patent number: 4272324
    Abstract: An impregnated carbonaceous material which can be mixed with basic coal to form a mixture which, once roasted, forms an effective shaft furnace coke. The impregnated carbonaceous material is formed by finely crushing an inert carbonaceous material such as powdered coke, coal gasification char, coal liquifaction residue coal, oil coke, and semi-dry-distilled char, and mixing and impregnating the crushed carbonaceous material with an aromatic pitch such as coal tar, coal tar pitch, asphalt, and pitch obtained by heat-treating or solvent extracting an asphalt. The mixing is conducted at a temperature above the aromatic pitch melting point. The impregnated carbonaceous material contains preferably 50 to 95 parts by weight of crushed inert carbonaceous material and 5 to 50 parts by weight aromatic pitch.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: June 9, 1981
    Assignee: Sumitomo Metal Industries Limited
    Inventors: Yoshihiko Sunami, Kunihiko Nishioka
  • Patent number: 4178215
    Abstract: A method of manufacturing blast furnace coke wherein said coke is obtained by a process in which coal to be used for making briquettes is mixed with a caking substance having a softening point of 40.degree.-250.degree. C. with or without a solvent having fluidity at the mixing temperature and dissolvable to said caking substance, the resultant mixture being mixed by means of a powerful mixer capable of applying mixing energy of 0.01KW/Kg or more at a temperature of 40.degree.-250.degree. C. for 1-10 minutes, while a heating medium such as steam is passed therethrough and is then subjected to briquetting with a roll press. The briquette obtained is either carbonized directly or after blending with coal ready for coke oven charging.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: December 11, 1979
    Assignees: Sumitomo Metal Industries Limited, Sumikin Coke Company Limited
    Inventors: Yoshio Kiritani, Michio Tsuyuguchi, Tetsuo Ibaragi, Katsuhiro Yano, Yoshihiko Sunami, Kunihiko Nishioka
  • Patent number: 4073625
    Abstract: A process for preparing a briquette is disclosed. The process comprises a coal with a caking substance having a softening point of 20.degree.-40.degree. C. or with a caking substance having a softening point of above 40.degree. C. and a solvent which has fluidity at normal temperature and is compatible with the caking substance to a coal for making briquettes, powerfully mixing at a temperature of above 10.degree. C., preferably of 20.degree.-50.degree. C., for 1-10 minutes, by using a mixer provided with a mixing tool which is rotated at a speed of more than 5m/sec. peripheral velocity and/or a mixer provided with a mixing tool which applies a pressure of more than 45kg/cm.sup.2 ; and briquetting by using a roll press, whereby a briquette is obtained having a shutter strength of more than 80 and a trommel strength of more than 90.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: February 14, 1978
    Assignees: Sumitomo Metal Industries Limited, Sumikin Coke Company Limited
    Inventors: Yoshio Kiritani, Michio Tsuyuguchi, Tetsuo Ibaragi, Katsuhiro Yano, Yoshihiko Sunami, Kunihiko Nishioka