Patents by Inventor Masato Ogawa

Masato Ogawa 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: 8600288
    Abstract: An image forming apparatus includes an image forming unit, a first sheet stack portion, a sheet output section, and a post processing unit. The image forming unit forms an image on a sheet. The first sheet stack portion is provided at an upper face of the image forming unit. The sheet output section outputs the sheet on which the image is formed by the image forming unit from one side of the image forming apparatus to the first sheet stack portion. The post processing unit is provided adjacent to a lateral side of the image forming unit at an upstream side of the sheet output section to execute post processing on the sheet. A sheet subjected to post-processing by the post-processing unit is output to the first sheet stack portion from the same direction as a sheet not subjected to post-processing by the post-processing unit.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: December 3, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Takamasa Shiraki, Kazushige Kawamura, Yoshihide Ohta, Takayuki Andoh, Masato Ogawa, Takuji Takahashi, Tetsuya Fujioka, Yasunobu Youda, Kohji Hatayama
  • Patent number: 8593651
    Abstract: An image forming apparatus including an image reading unit disposed in an upper portion of the image forming apparatus, an image forming unit disposed below the image reading unit to form an image on a sheet fed from a sheet roll, a pair of flange members attached to both lateral ends of the sheet roll in a width direction of the sheet roll, a sheet roll supporter disposed below the image reading unit in a rear portion of the image forming apparatus to support the sheet roll, an opening through which the sheet roll is set to the sheet roll supporter, and a guide assembly provided at upper and lower parts of the opening to position at least one of the pair of flange members attached to the sheet roll in the width direction to guide the sheet roll to the sheet roll supporter.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 26, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Niihara, Masahiko Yamada, Yuichiro Maeyama, Masato Ogawa, Shigeru Morinaga, Kazuhiro Wakamatsu
  • Publication number: 20130222457
    Abstract: An image forming apparatus includes a medium that is a long roll wound around a core member; a feeding unit configured to feed the medium; an image forming unit configured to form an image on the medium; a fixed roll end detecting unit configured to detect an end of the medium whose end is fixed to the core member; a determining unit configured to determine whether to stop, for a time period, the medium on which the image has been formed by the image forming unit, when the fixed roll end detecting unit detects the end of the medium; and a control unit configured to stop an operation of the feeding unit when the determining unit determines to stop the medium for the time period, and to cause the feeding unit to perform an operation of winding back the medium when the time period has elapsed.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 29, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kikuya Nakada, Masato Ogawa, Takashi Hatano
  • Publication number: 20130221054
    Abstract: A sheet feeder including a sheet roll constituted of one long continuous sheet wound around a core, a sheet conveyance unit to convey the sheet fed from the sheet roll and including an extreme upstream member that contacts an upper surface of the sheet fed from the sheet roll at an extreme upstream side in a direction of conveyance of the sheet, and a trailing end detector rotatable by contacting the sheet extended between the core of the sheet roll and the extreme upstream member. The trailing end detector detects a trailing end of the sheet roll upon being rotated upward to a position above a line connecting the extreme upstream member and a lowest part of the core of the sheet roll having a minimum diameter usable in the sheet feeder.
    Type: Application
    Filed: January 23, 2013
    Publication date: August 29, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventor: Masato Ogawa
  • Patent number: 8517872
    Abstract: The present invention provides an anti-rotation structure for a balance chamber snap ring of a belt type continuously variable transmission having a balance chamber that balances a centrifugal oil pressure generated in an oil pressure chamber formed on a movable sheave back surface. A projecting portion, which comes into contact with an end portion of the balance chamber snap ring when the balance chamber snap ring rotates independently within a ring groove about a secondary shaft, thereby restricting independent rotation of the balance chamber snap ring, is provided on a latch portion of a cover member. As a result, independent rotation of the balance chamber snap ring can be prevented, thereby preventing the cover member and the balance chamber snap ring from becoming worn.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: August 27, 2013
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Masato Ogawa
  • Patent number: 8416571
    Abstract: A storage apparatus includes: a storage drive providing a physical storage area for creating a logical storage area used by an external apparatus; a storage controller including a plurality of central processing units (CPUs) executing data write processing from the external apparatus to the storage drive, and data read processing from the storage drive; a plurality of cooling fans cooling the storage drive; a temperature sensor detecting a temperature of air introduced or discharged by the cooling fans; and a revolving speed sensor detecting a revolving speed of each cooling fan. Any of the CPUs executes operation control processing in which, through a data network path to the storage drive for the data write and read processing, measurement values of the temperature and revolving speed sensors are acquired and a revolving speed setup value of the fans is calculated and is transmitted to the cooling fans.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 9, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Takakatsu Mizumura, Masato Ogawa, Tetsuya Inoue, Yosuke Nakayama
  • Publication number: 20130070022
    Abstract: An image forming apparatus includes recording heads, head holders, a carriage, a guide member, a reference member, and a pressing member. The recording heads have nozzles to eject liquid droplets. The holders hold the recording heads. The carriage is reciprocally movable in a main scanning direction and holding the holders. The guide member is disposed along the main scanning direction to guide the carriage along the main scanning direction. The reference member is disposed parallel to the guide member in the carriage to hold the holders. The pressing member presses at least one of the holders toward at least another of the holders. The holders have reference faces to contact each other in the main scanning direction to determine relative positions of the holders. With the recording heads positioned based on the reference faces of the holders, the recording heads are held by the holders.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 21, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masato OGAWA, Shinichiro Naruse, Kenji Shimizu, Takayuki Niihara
  • Patent number: 8392756
    Abstract: A storage apparatus has a physical storage area used by an external apparatus, a drive interface unit, a power supply unit, and a storage controller executing data write processing from the external apparatus to the storage drive and data read processing from the storage drive through the drive interface unit, and a drive control interface unit. The power supply unit inputs power supply information to the drive interface unit. Any one of the processing units acquires the power supply information of the power supply unit through a data network path to the drive interface unit for the data write processing and the data read processing, and determines whether or not a failure occurs in the power supply unit supplying the operation power to the storage drive and the drive interface unit, on the basis of the acquired power supply information.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: March 5, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yosuke Nakayama, Tetsuya Inoue, Masato Ogawa, Takakatu Mizumura
  • Publication number: 20120267946
    Abstract: An annular seal member includes: an annular base part; and a seal edge, which is provided on both end faces of the annular base part to protrude in opposite directions, wherein the seal edge is configured to closely contact with a opposing face of a seal target such that an inner periphery side of the base part and an outer periphery side of the base part are fluid-tightly partitioned, wherein a plurality of the seal edges is provided in parallel with each other in at least one area of the base part, and wherein the number of the seal edges in the at least one area of the base part is larger than the number of the seal edges in the other area of the base part.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 25, 2012
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Masato OGAWA, Ayumi YAMAMURA, Masayuki HIJIKATA, Koji YANAI
  • Publication number: 20120222532
    Abstract: A sheet cutting device includes a cutter holder, a moving unit, and a guide member. The cutter holder accommodates a cutter. The cutter has opposed blades opposing each other to cut a sheet of recording media fed along a sheet feed path of a feed guide plate unit. The moving unit holds the cutter holder and is movable in a sheet width direction perpendicular to a sheet feed direction in which the sheet is fed along the sheet feed path. The guide member is disposed along the sheet width direction to guide the moving unit in the sheet width direction. The cutter holder partially overlaps with the feed guide plate unit in a thickness direction of the sheet perpendicular to both the sheet width direction and the sheet feed direction.
    Type: Application
    Filed: February 22, 2012
    Publication date: September 6, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masahiko YAMADA, Kazuhiro Wakamatsu, Yuichiro Maeyama, Masato Ogawa, Toshihiro Yoshinuma
  • Publication number: 20120222530
    Abstract: A sheet cutting device includes a cutter holder, a moving unit, a connecting member, and a drawing member. The cutter holder accommodates a cutter. The cutter has opposed blades opposing each other to cut a sheet of recording media fed along a sheet feed path. The moving unit is disposed away from the cutter holder in a sheet feed direction in which the sheet is fed along the sheet feed path. The moving unit is reciprocally movable in a sheet width direction perpendicular to the sheet feed direction. The connecting member connects the cutter holder to the moving unit. The drawing member is mounted on the moving unit to draw the moving unit in the sheet width direction. The cutter holder is pivotable around the connecting member in a thickness direction of the sheet relative to the moving unit.
    Type: Application
    Filed: February 6, 2012
    Publication date: September 6, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro YOSHINUMA, Kazuhiro Wakamatsu, Masahiko Yamada, Yuichiro Maeyama, Masato Ogawa
  • Publication number: 20120222531
    Abstract: A moving unit of a sheet cutting device is movable in a sheet width direction perpendicular to a sheet feed direction in which a sheet of recording media is fed along a sheet feed path. A cutter holder accommodates a cutter, is connected to the moving unit and is rotatable in a thickness direction of the sheet relative to the moving unit. A guide member is disposed along the sheet width direction to guide the moving unit in the sheet width direction. A drawing member is mounted on the moving unit to draw the moving unit toward a downstream side in a cutting direction in which the cutter holder moves to cut the sheet. The moving unit is connected to the cutter holder at a position downstream in the cutting direction from an accommodated position of the cutter in the cutter holder.
    Type: Application
    Filed: February 6, 2012
    Publication date: September 6, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masato OGAWA, Kazuhiro WAKAMATSU, Masahiko YAMADA, Yuichiro MAEYAMA, Toshihiro YOSHINUMA
  • Publication number: 20120210838
    Abstract: An image forming apparatus includes a recording head, a carriage, a sheet cutting device, a cutter position detecting device, and a notification device. The carriage mounts the recording head and is reciprocally movable in a width direction of a sheet perpendicular to a sheet feed direction. The sheet cutting device includes a cutter and a cutter holder. A movement area of the carriage overlaps, in a thickness direction of the sheet, a movement area of the cutter holder in which the cutter holder moves to cut the sheet with the cutter. The cutter holder, after cutting the sheet, is movable in the width direction of the sheet with the cutter holder being retracted from the sheet feed path in the thickness direction of the sheet. The notification device notifies a user of an abnormality of the cutter holder based on a detection result of the cutter position detecting device.
    Type: Application
    Filed: January 18, 2012
    Publication date: August 23, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuichiro MAEYAMA, Kazuhiro Wakamatsu, Masahiko Yamada, Masato Ogawa, Toshihiro Yoshinuma
  • Patent number: 8204431
    Abstract: In an image forming apparatus, when a first sheet discharger discharges a sheet bearing an image in a first direction from a proximal end to a distal end of the image forming apparatus, a post-processing device performs post-processing including at least one of stapling, punching, stamping, and sorting of the sheet discharged from the first sheet discharger. After a second sheet discharger discharges the processed sheet in a second direction opposite to the first direction in which the first sheet discharger discharges the sheet bearing the image, a sheet stacker stacks the sheet discharged from the second sheet discharger. A sheet conveyance path is provided between the first sheet discharger and the second sheet discharger. An opening is provided between the sheet stacker and an image reader so that the sheet discharged from the second sheet discharger can be retrieved from the sheet stacker in the second direction.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: June 19, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Takamasa Shiraki, Takayuki Andoh, Kohji Hatayama, Yoshihide Ohta, Masato Ogawa, Tetsuya Fujioka, Takuji Takahashi, Yasunobu Youda, Kazushige Kawamura
  • Publication number: 20120139987
    Abstract: An image forming apparatus includes a sheet feed device to feed a sheet along a sheet feed path, a sheet cutting device including a cutter and a cutter holder to cut the sheet to a desired length, a controller to control the sheet feed device and the cutter holder. The cutter holder holds the cutter and is reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction. The cutter holder, after cutting the sheet, is movable in the width direction with the cutter holder retracted away from the sheet feed path in a thickness direction of the sheet perpendicular to both the sheet feed direction and the width direction. The controller controls the sheet feed device to feed the sheet while the cutter holder moves in the width direction with the cutter holder retracted away from the sheet feed path in the thickness direction.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuichiro MAEYAMA, Masahiko Yamada, Masato Ogawa, Kazuhiro Wakamatsu, Toshihiro Yoshinuma
  • Publication number: 20120140402
    Abstract: A storage apparatus includes: a storage drive providing a physical storage area for creating a logical storage area used by an external apparatus; a storage controller including a plurality of central processing units (CPUs) executing data write processing from the external apparatus to the storage drive, and data read processing from the storage drive; a plurality of cooling fans cooling the storage drive; a temperature sensor detecting a temperature of air introduced or discharged by the cooling fans; and a revolving speed sensor detecting a revolving speed of each cooling fan. Any of the CPUs executes operation control processing in which, through a data network path to the storage drive for the data write and read processing, measurement values of the temperature and revolving speed sensors are acquired and a revolving speed setup value of the fans is calculated and is transmitted to the cooling fans.
    Type: Application
    Filed: June 11, 2010
    Publication date: June 7, 2012
    Applicant: HITACHI, LTD.
    Inventors: Takakatsu Mizumura, Masato Ogawa, Tetsuya Inoue, Yosuke Nakayama
  • Publication number: 20120140011
    Abstract: A sheet cutting device includes a cutter including opposed blades to cut a sheet fed along a sheet feed path to the device, a cutter holder holding the cutter and reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction in which the sheet is fed, and a guide member including a first path to guide the holder in the width direction of the sheet to cut the sheet with the cutter and a second path to guide the holder in the width direction after the sheet is cut. The second path is disposed away from the first path in a thickness direction of the sheet perpendicular to both the sheet feed direction and the width direction of the sheet. When the holder moves along the second path, the holder is retracted away from the sheet feed path in the thickness direction of the sheet.
    Type: Application
    Filed: November 29, 2011
    Publication date: June 7, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masahiko Yamada, Kazuhiro Wakamatsu, Yuichiro Maeyama, Masato Ogawa, Toshihiro Yoshinuma
  • Publication number: 20120140010
    Abstract: An image forming apparatus includes a recording head, a head holder, a cutter, and a cutter holder. The recording head ejects ink onto a sheet of recording media fed along a sheet feed path to record an image on the sheet. The head holder holds the recording head. The cutter includes opposed blades opposing each other with the sheet interposed therebetween. The cutter holder holds the cutter and is reciprocally movable in a width direction of the sheet perpendicular to a sheet feed direction in which the sheet is fed along the sheet feed path. The cutter holder is disposed downstream from the recording head in the sheet feed direction and within a width of the head holder in the sheet feed direction.
    Type: Application
    Filed: November 10, 2011
    Publication date: June 7, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masato Ogawa, Masahiko Yamada, Yuichiro Maeyama, Kazuhiro Wakamatsu, Toshihiro Yoshinuma
  • Patent number: 8194255
    Abstract: An image forming apparatus includes an apparatus body, a cover section, an image reading device including a document hold member and a document hold member cover, and a lock mechanism. When the document hold member cover is not in close contact with the document hold member, the lock mechanism prevents opening of the cover section or sliding of the image reading device.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: June 5, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama, Kazushige Kawamura, Tetsuya Fujioka, Masato Ogawa, Taku Kudoh
  • Patent number: 8190790
    Abstract: Appropriate parameters can be efficiently set for network ports included in a storage apparatus. A storage apparatus performing I/O processing on a storage drive in response to an I/O request manages a first table in which a network device (SAS controller, SAS expander) is associated with location information of the network ports, a second table in which the cable length of a network cable coupled to each of the network ports is associated with a port ID of the network port, and a relationship between the cable length of the network cable and the parameter (output amplitude, pre-emphasis) set for the network port. The storage apparatus acquires the cable length of the network cable from the second table, determines the parameters corresponding to the acquired cable length from the above relationship, and sets the determined parameter for the network port.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: May 29, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masato Ogawa, Tetsuya Inoue, Tomoki Tanoue, Masateru Kurokawa