Patents by Inventor Takamasa Matsumoto

Takamasa Matsumoto 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: 11009300
    Abstract: A heat exchanger includes flat cross-sectional shaped heat transfer tubes arranged with gaps between flat surfaces of the flat heat transfer tubes facing each other, and each having a flow passage in a vertical direction, and corrugated fins disposed between the flat surfaces facing each other. The corrugated fins each include an end portion in a direction in which air flows, and protruding from end portions of the flat surfaces, a drain hole provided adjacent to central regions of the flat surfaces in the direction in which the air flows, first louvers located upstream of the drain hole, and each including a slit and a slat that is inclined in the vertical direction, and second louvers located downstream of the drain hole, and each including a slit and a slat that is inclined in the vertical direction.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: May 18, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Matsumoto, Takamasa Uemura, Shigeyoshi Matsui
  • Publication number: 20210127047
    Abstract: An electronic device includes an open-close detector configured to detect an open-close state indicating whether an optical path open-close device of a film camera is open or closed, a displacement detector configured to detect a displacement of a movable portion of the film camera interlocked with a movement of an operation portion of the film camera, and control circuitry. In response to a detection result of the displacement detector, the control circuitry selects a measurement mode for measuring an open time during which the optical path open-close device is open, from a plurality of operation modes of the electronic device. In the measurement mode, the control circuitry measures the open time based on the open-close state detected by the open-close detector.
    Type: Application
    Filed: July 31, 2020
    Publication date: April 29, 2021
    Inventors: Atsushi IKEDA, Kenji HAYASAKA, Takamasa MATSUMOTO, Youhei NIITSUMA, Toshihiro OKAMOTO, Kenta TAKAHASHI, Yuichi MIKUNI
  • Publication number: 20200310321
    Abstract: A sheet sorting device includes a plurality of trays, a tray shifter, a tray stop position detector, and circuitry. The plurality of trays is disposed in multiple stages in a vertical direction and configured to stack a sheet. The tray shifter is configured to move the plurality of trays separately in a tray shift direction. The tray stop position detector is configured to detect stop positions of the plurality of trays separately. The circuitry is configured to cause the tray shifter to move the plurality of trays to home positions in an initial operation, at least one tray having a home position opposite to a home position of another tray in the tray shift direction. The circuitry is configured to, while moving the plurality of trays at a same time in the initial operation, cause the tray shifter to move the trays in directions opposite to each other.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Masakazu FUJITA, Yasushi TSURUOKA, Takamasa MATSUMOTO, Hiroaki UTAGAWA, Ryohsuke AKAISHI, Hisayoshi SUGAWARA
  • Patent number: 9604814
    Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: March 28, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomohiro Furuhashi, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Kazuya Yamamoto, Kyosuke Nakada, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Junya Suzuki, Youhei Niitsuma, Kazunori Konno, Kiichiro Goto
  • Patent number: 9561927
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 7, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
  • Patent number: 9533852
    Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Junya Suzuki, Kiichiro Goto, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Tomohiro Furuhashi, Kyosuke Nakada, Kazuya Yamamoto, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Kazunori Konno, Youhei Niitsuma
  • Publication number: 20160185552
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 30, 2016
    Applicant: Ricoh Company, LIMITED
    Inventors: Tomomichi HOSHINO, Masahiro TAMURA, Shuuya NAGASAKO, Tomohiro FURUHASHI, Keisuke SUGIYAMA, Kyosuke NAKADA, Kazuya YAMAMOTO, Akira KUNIEDA, Takahiro WATANABE, Junya SUZUKI, Kazunori KONNO, Youhei NIITSUMA, Takamasa MATSUMOTO, Kiichiro GOTO, Kazuhiko KITANO, Takashi FUKUMOTO, Yasuo NIIKURA, Satoru TAKANO, Hidetoshi KOJIMA, Kei SASAKI, Yasushi TSURUOKA, Shintaro MATSUMOTO, Ryo TAKAHASHI, Yuuta MORI, Kohjiroh HAGA
  • Patent number: 9260264
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: February 16, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
  • Patent number: 9255503
    Abstract: An exhaust device includes a plurality of independent exhaust passages connected to an exhaust port of one cylinder or a plurality of cylinders that are non-sequential in exhaust order, and a mixing pipe into which exhaust that has passed through the respective independent exhaust passages flows. The downstream ends of the respective independent exhaust passages are connected in a bundled form to the upstream end of the mixing pipe. A cavity expansion chamber is disposed in an exhaust passage downstream from the mixing pipe. The cavity expansion chamber is disposed in a position (at a distance L2) such that, in the intermediate speed range, a negative pressure wave generated due to an exhaust pressure wave generated by opening an exhaust valve being reflected by the cavity expansion chamber reaches the exhaust port during an overlap period of the exhaust valve and an intake valve of the cylinder.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: February 9, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Takamasa Matsumoto, Mitsuo Nakamura, Mikihito Fujii, Nobuhiro Soumiyou, Shunki Okazaki, Yoshito Wakabayashi
  • Publication number: 20150353315
    Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.
    Type: Application
    Filed: June 15, 2015
    Publication date: December 10, 2015
    Applicant: Ricoh Company, Limited
    Inventors: Junya SUZUKI, Kiichiro GOTO, Masahiro TAMURA, Shuuya NAGASAKO, Keisuke SUGIYAMA, Tomohiro FURUHASHI, Kyosuke NAKADA, Kazuya YAMAMOTO, Tomomichi HOSHINO, Akira KUNIEDA, Takahiro WATANABE, Takamasa MATSUMOTO, Kazunori KONNO, Youhei NIITSUMA
  • Patent number: 9188095
    Abstract: A multi-cylinder engine intake and exhaust having a plurality of independent exhaust passages each connected to an exhaust port in a respective one of a plurality of cylinders, a collecting pipe connected to downstream ends of the plurality of independent exhaust passages, and a volume-enlarged portion provided downstream with respect to the collecting pipe. Each of at least a downstream portion of each of the plurality of independent exhaust passages and at least an upstream portion of the collecting pipe is formed such that a cross-sectional area thereof gradually decreases toward a downstream direction. The volume-enlarged portion is formed such that a cross-sectional area thereof is relatively increased so as to cause a positive pressure wave of exhaust gas reaching the volume-enlarged portion to be reflected and converted to a negative pressure wave.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: November 17, 2015
    Assignee: Mazda Motor Corporation
    Inventors: Takamasa Matsumoto, Mikihito Fujii
  • Patent number: 9096403
    Abstract: A sheet stacking apparatus including: a discharge unit configured to discharge a sheet through a discharge port; a stack unit configured to stack the discharged sheet thereon; and a plurality of blowing units configured to supply air to a discharge side of the discharge unit while the sheet is discharged, wherein the blowing units are disposed, below the discharge port, aligned with a direction perpendicular to a sheet discharge direction.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 4, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Satoru Takano, Kiichiro Goto, Takashi Fukumoto, Yasuo Niikura, Shintaro Matsumoto, Hidetoshi Kojima, Kei Sasaki, Junya Suzuki, Kazunori Konno, Yuuta Mori, Kohjiroh Haga, Yasushi Tsuruoka, Takamasa Matsumoto, Ryo Takahashi, Youhei Niitsuma
  • Patent number: 9085436
    Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: July 21, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Junya Suzuki, Kiichiro Goto, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Tomohiro Furuhashi, Kyosuke Nakada, Kazuya Yamamoto, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Kazunori Konno, Youhei Niitsuma
  • Publication number: 20150123342
    Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Tomohiro FURUHASHI, Masahiro TAMURA, Shuuya NAGASAKO, Keisuke SUGIYAMA, Kazuya YAMAMOTO, Kyosuke NAKADA, Tomomichi HOSHINO, Akira KUNIEDA, Takahiro WATANABE, Takamasa MATSUMOTO, Junya SUZUKI, Youhei NIITSUMA, Kazunori KONNO, Kiichiro GOTO
  • Patent number: 8960660
    Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: February 24, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tomohiro Furuhashi, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Kazuya Yamamoto, Kyosuke Nakada, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Junya Suzuki, Youhei Niitsuma, Kazunori Konno, Kiichiro Goto
  • Patent number: 8936240
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: January 20, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
  • Patent number: 8925917
    Abstract: According to an embodiment, provided is a sheet output device including: a sheet output unit configured to output a sheet; a tray unit on which the sheet output by the sheet output unit is to be stacked; an air blower unit configured to blow air onto the sheet output by the sheet output unit; and a control unit configured to control an airflow rate of the air blower unit according to an amount of the sheet output from the sheet output unit.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Takahiro Watanabe, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Tomomichi Hoshino, Akira Kunieda, Junya Suzuki, Kazunori Konno, Takamasa Matsumoto, Youhei Niitsuma, Kiichiro Goto
  • Patent number: 8876107
    Abstract: A sheet stacking device includes: a stacking unit that stacks thereon a sheet discharged in a sheet discharging direction; a conveying unit that performs a moving-back operation of conveying the stacked sheet in a direction opposite to the sheet discharging direction; a pressing unit that performs a pressing operation of pressing the conveyed sheet; and a driving unit that drives the conveying unit and the pressing unit by a same driving source.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: November 4, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Junya Suzuki, Kiichiro Goto, Takashi Fukumoto, Yasuo Niikura, Shintaro Matsumoto, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Kazunori Konno, Yuuta Mori, Kohjiroh Haga, Takamasa Matsumoto, Ryo Takahashi, Youhei Niitsuma
  • Publication number: 20140250874
    Abstract: An exhaust device includes a plurality of independent exhaust passages connected to an exhaust port of one cylinder or a plurality of cylinders that are non-sequential in exhaust order, and a mixing pipe into which exhaust that has passed through the respective independent exhaust passages flows. The downstream ends of the respective independent exhaust passages are connected in a bundled form to the upstream end of the mixing pipe. A cavity expansion chamber is disposed in an exhaust passage downstream from the mixing pipe. The cavity expansion chamber is disposed in a position (at a distance L2) such that, in the intermediate speed range, a negative pressure wave generated due to an exhaust pressure wave generated by opening an exhaust valve being reflected by the cavity expansion chamber reaches the exhaust port during an overlap period of the exhaust valve and an intake valve of the cylinder.
    Type: Application
    Filed: November 27, 2012
    Publication date: September 11, 2014
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Takamasa Matsumoto, Mitsuo Nakamura, Mikihito Fujii, Nobuhiro Soumiyou, Shunki Okazaki, Yoshito Wakabayashi
  • Publication number: 20140203501
    Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.
    Type: Application
    Filed: March 24, 2014
    Publication date: July 24, 2014
    Applicant: Ricoh Company, Limited
    Inventors: Tomomichi HOSHINO, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga