Patents by Inventor Tatsuya Koyama

Tatsuya Koyama 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: 9122218
    Abstract: An image forming device including: an image forming unit; a heating body; a power supply unit; a temperature sensing member; and a controller. The image forming unit is configured to form an image on a recording sheet. The heating body is configured to heat the recording sheet on which the image is formed. The power supply unit is configured to supply power to the heating body. The temperature sensing member is configured to detect a temperature of the heating body. The controller is configured to: control the power supply unit based on the detected temperature; determine whether or not a high-power output state of the power supply unit has continued for a first duration under a print control process; and judge that the temperature sensing member is in an abnormal state when determination is made so that the high-power output state has continued for the first duration.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: September 1, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tatsuya Koyama, Atsushi Ozawa
  • Publication number: 20150151204
    Abstract: The game program according to the present invention receives selection operation input from a player by allowing the player to select any character from among multiple characters. Then, it is determined whether the received selection operation input is one of a first selection operation input and a second selection operation input. If the first selection operation input is received, the character is configured as a source material character used to vary parameter values configured in the base character up to an upper limit, and, in addition, if the second selection operation input is received, then the character is configured as a source material character used to enable the parameter values configured in the base character to be increased beyond the upper limit.
    Type: Application
    Filed: November 3, 2014
    Publication date: June 4, 2015
    Inventors: Kyohei YAMAGUCHI, Tatsuya KOYAMA
  • Patent number: 9031442
    Abstract: An image-forming apparatus includes: a fixing device; a power supply unit; a non-contact temperature sensor; and a control device. The fixing device has a heating member. The power supply unit is configured to supply electric power to the heating member. The non-contact temperature sensor is disposed in a position separate from the heating member and configured to detect temperature of the heating member. A first function and a second function respectively produce a first corrected temperature value and a second corrected temperature value smaller than the first corrected temperature value with respect to a given detected temperature. The control device is configured to: select the first function to correct the detected temperature at a start of a print control process; switch from the first function to the second function at a prescribed timing during the print control process; and control the power supply unit based on the corrected temperature.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: May 12, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tatsuya Koyama, Yuki Fukusada
  • Patent number: 8983351
    Abstract: A fixing device includes a tubular member, a nip member, a backup member, and a bias member. The tubular member has an outer peripheral surface, an inner peripheral surface defining an internal space, and an axis defining an axis direction. The nip member is in contact with the inner peripheral surface. The backup member is opposed to the nip member and in contact with the outer peripheral surface to form a nip region for nipping a sheet conveyed in a conveying direction orthogonal to the axis direction. The backup member is configured to move in the conveying direction and the tubular member is configured to circularly move around the axis in accordance with the movement of the backup member due to a friction force generated between the tubular member and the backup member. The bias member protrudes toward the backup member through a bias region.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 17, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tatsuya Koyama
  • Patent number: 8965225
    Abstract: In an image-forming apparatus, a sheet detector detects the recording sheet conveyed from the sheet accommodating unit by the pickup roller. A fixing unit includes a heating member configured to heat the recording sheet. A power supply unit supplies the heating member with electric power. A control device is configured to: output a signal controlling the pickup roller to convey the recording sheet from the sheet accommodating unit; determine, based on a detection result of the sheet detector, whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit; control the power supply unit to supply the heating member with the electric power such that the electric power per unit time does not exceed an upper limit; and set the upper limit depending on a determination result of whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tatsuya Koyama
  • Patent number: 8958740
    Abstract: An apparatus configured to discharge sheets may include pressing mechanism configured to downwardly press discharged sheets. For example, the pressing mechanism may include a first pressing member and a second pressing member. The first pressing member and the second pressing member may be located at least partially overlapping positions in the width-wise direction of the sheet. Additionally or alternatively, each of the first pressing member and the second pressing member may be configured to contact the sheet at different positions along a discharge direction. In one example, the different portions may be spaced apart from each other in the discharge direction.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: February 17, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasunori Watanabe, Tatsuya Koyama
  • Patent number: 8795060
    Abstract: A game processing server apparatus providing a game service to a plurality of terminal devices connected with each other via a network, includes a game data generation unit that generates game data in the game service; a player information storing unit that stores player information including registration date data indicating a date when the player operating the terminal device is registered in the game service; and a group allocation unit that determines a player group to which the player belongs based on the registration date data of the player, wherein the game data generation unit generates game data for training, which is different from normal game data, to the player who belongs to the player group.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: August 5, 2014
    Assignee: DeNA Co., Ltd.
    Inventors: Yoshitaka Matsumoto, Kazuhiro Kondo, Shonosuke Tokumaru, Masataka Okihara, Kosuke Takami, Tatsuya Koyama
  • Publication number: 20140212156
    Abstract: An image forming device including: an image forming unit; a heating body; a power supply unit; a temperature sensing member; and a controller. The image forming unit is configured to form an image on a recording sheet. The heating body is configured to heat the recording sheet on which the image is formed. The power supply unit is configured to supply power to the heating body. The temperature sensing member is configured to detect a temperature of the heating body. The controller is configured to: control the power supply unit based on the detected temperature; determine whether or not a high-power output state of the power supply unit has continued for a first duration under a print control process; and judge that the temperature sensing member is in an abnormal state when determination is made so that the high-power output state has continued for the first duration.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Tatsuya Koyama, Atsushi Ozawa
  • Publication number: 20140153977
    Abstract: An image forming apparatus includes a fixing unit, discharge unit, first and second guides, and top cover. The discharge unit is disposed obliquely above a heating member of the fixing unit. The first guide extends from a position above the heating member toward the discharge unit and has an upstream portion in a conveying direction of an image-fixed sheet. The second guide is disposed above the heating member and faces the upstream portion. The second guide defines an upper portion of the conveying path. A part of the second guide faces the upstream portion in the first position, and exposes the upstream portion in the second position. The top cover is movable between an open position where the second guide is exposed and a closed position where the second guide is covered. The first guide has a guide surface sloping downward in the conveying direction.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsushi Ozawa, Noboru Suzuki, Tatsuya Koyama, Takuji Matsuno
  • Publication number: 20140153948
    Abstract: An image-forming apparatus includes: a fixing device; a power supply unit; a non-contact temperature sensor; and a control device. The fixing device has a heating member. The power supply unit is configured to supply electric power to the heating member. The non-contact temperature sensor is disposed in a position separate from the heating member and configured to detect temperature of the heating member. A first function and a second function respectively produce a first corrected temperature value and a second corrected temperature value smaller than the first corrected temperature value with respect to a given detected temperature. The control device is configured to: select the first function to correct the detected temperature at a start of a print control process; switch from the first function to the second function at a prescribed timing during the print control process; and control the power supply unit based on the corrected temperature.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tatsuya Koyama, Yuki Fukusada
  • Publication number: 20140153949
    Abstract: In an image-forming apparatus, a sheet detector detects the recording sheet conveyed from the sheet accommodating unit by the pickup roller. A fixing unit includes a heating member configured to heat the recording sheet. A power supply unit supplies the heating member with electric power. A control device is configured to: output a signal controlling the pickup roller to convey the recording sheet from the sheet accommodating unit; determine, based on a detection result of the sheet detector, whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit; control the power supply unit to supply the heating member with the electric power such that the electric power per unit time does not exceed an upper limit; and set the upper limit depending on a determination result of whether the pickup roller succeeds in conveying the recording sheet from the sheet accommodating unit.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Tatsuya Koyama
  • Publication number: 20140087882
    Abstract: A game processing server apparatus providing a game service to a plurality of terminal devices connected with each other via a network, includes a game data generation unit that generates game data in the game service; a player information storing unit that stores player information including registration date data indicating a date when the player operating the terminal device is registered in the game service; and a group allocation unit that determines a player group to which the player belongs based on the registration date data of the player, wherein the game data generation unit generates game data for training, which is different from normal game data, to the player who belongs to the player group.
    Type: Application
    Filed: July 9, 2013
    Publication date: March 27, 2014
    Inventors: Yoshitaka MATSUMOTO, Kazuhiro Kondo, Shonosuke Tokumaru, Masataka Okihara, Kosuke Takami, Tatsuya Koyama
  • Publication number: 20120312425
    Abstract: The present invention provides a steel product for gas carburizing used for manufacturing a carburized steel part. In the above steel product for gas carburizing, a composition of a base metal contains, in mass %, C: 0.1 to 0.4%, Si: exceeding 1.2 to 4.0%, Mn: 0.2 to 3.0%, Cr: 0.5 to 5.0%, Al: 0.005 to 0.1%, S: 0.001 to 0.3%, N: 0.003 to 0.03%, and O: limited to 0.0050% or less, and P: limited to 0.025% or less, and when the contents of Si, Mn, and Cr (mass %) are set to [Si %], [Mn %], and [Cr %], Expression (1) below is satisfied, and an alloy shortage layer satisfying Expression (2) below exists in a range from its surface to 2 to 50 ?m in depth. 32?3.5[Si %]+[Mn %]+3[Cr %]>9??(1) 3.
    Type: Application
    Filed: December 7, 2011
    Publication date: December 13, 2012
    Inventors: Tatsuya Koyama, Manabu Kubota
  • Publication number: 20120219338
    Abstract: An apparatus configured to discharge sheets may include pressing mechanism configured to downwardly press discharged sheets. For example, the pressing mechanism may include a first pressing member and a second pressing member. The first pressing member and the second pressing member may be located at least partially overlapping positions in the width-wise direction of the sheet. Additionally or alternatively, each of the first pressing member and the second pressing member may be configured to contact the sheet at different positions along a discharge direction. In one example, the different portions may be spaced apart from each other in the discharge direction.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 30, 2012
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasunori Watanabe, Tatsuya Koyama
  • Publication number: 20120163889
    Abstract: A fixing device includes a tubular member, a nip member, a backup member, and a bias member. The tubular member has an outer peripheral surface, an inner peripheral surface defining an internal space, and an axis defining an axis direction. The nip member is in contact with the inner peripheral surface. The backup member is opposed to the nip member and in contact with the outer peripheral surface to form a nip region for nipping a sheet conveyed in a conveying direction orthogonal to the axis direction. The backup member is configured to move in the conveying direction and the tubular member is configured to circularly move around the axis in accordance with the movement of the backup member due to a friction force generated between the tubular member and the backup member. The bias member protrudes toward the backup member through a bias region.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Tatsuya KOYAMA
  • Patent number: 7926023
    Abstract: Methods and apparatus are provided for: monitoring processor tasks and associated processor loads therefor that are allocated to be performed by respective sub-processing units associated with a main processing unit; detecting whether a processing error has occurred in a given one of the sub-processing units; re-allocating all of the processor tasks of the given sub-processing unit to one or more participating sub-processing units, including other sub-processing units associated with the main processing unit, based on the processor loads of the processor tasks of the given sub-processing unit and the processor loads of the participating sub-processing units; and at least one of: (i) shutting down, and (ii) re-booting the given sub-processing unit.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: April 12, 2011
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Yasukichi Okawa, Daisuke Hiraoka, Koji Hirairi, Tatsuya Koyama
  • Patent number: 7779767
    Abstract: A firing furnace comprising: a muffle formed so as to ensure a space for housing a formed body to be fired; a member that constitutes a heat generator and is placed on and/or around the muffle; and a heat insulating layer that contains said muffle and said heat generator inside thereof, wherein a carbon-natured sheet is placed in the vicinity of corner portions of an inner face of said heat insulating layer.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: August 24, 2010
    Assignee: Ibiden Co., Ltd.
    Inventors: Takamitsu Saijo, Yuichi Hiroshima, Tatsuya Koyama
  • Patent number: 7730456
    Abstract: Methods and apparatus are provided for: monitoring processor tasks and associated processor loads therefor that are allocated to be performed by respective sub-processing units associated with a main processing unit; detecting whether a processing error has occurred in a given one of the sub-processing units; re-allocating all of the processor tasks of the given sub-processing unit to one or more participating sub-processing units, including other sub-processing units associated with the main processing unit, based on the processor loads of the processor tasks of the given sub-processing unit and the processor loads of the participating sub-processing units; and at least one of: (i) shutting down, and (ii) re-booting the given sub-processing unit.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: June 1, 2010
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Yasukichi Okawa, Daisuke Hiraoka, Koji Hirairi, Tatsuya Koyama
  • Publication number: 20080098260
    Abstract: Methods and apparatus are provided for: monitoring processor tasks and associated processor loads therefor that are allocated to be performed by respective sub-processing units associated with a main processing unit; detecting whether a processing error has occurred in a given one of the sub-processing units; re-allocating all of the processor tasks of the given sub-processing unit to one or more participating sub-processing units, including other sub-processing units associated with the main processing unit, based on the processor loads of the processor tasks of the given sub-processing unit and the processor loads of the participating sub-processing units; and at least one of: (i) shutting down, and (ii) re-booting the given sub-processing unit.
    Type: Application
    Filed: December 6, 2007
    Publication date: April 24, 2008
    Applicant: Sony Computer Entertainment Inc.
    Inventors: Yasukichi Okawa, Daisuke Hiraoka, Koji Hirairi, Tatsuya Koyama
  • Patent number: 7124870
    Abstract: A mechanism for mechanically coupling a driving source and a driven member. The mechanism includes a first member coupled to the driving source and a second member coupled to the driven member. A resilient member exerts a force to bring the first and second members into pressure contact at a contact surface. A vibration is excited in the contact surface of the first member to produce a levitation force, based on an ultrasonic levitation, acting upon the second member. Frictional force between the first member and the second member is changed depending on the levitation force, thereby changing power transmitted between the first member and the second member.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: October 24, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaishi Ohashi, Takashi Maeno, Kenjiro Takemura, Tatsuya Koyama