Patents by Inventor Takashi Ogiwara

Takashi Ogiwara 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: 11118640
    Abstract: A wet parking brake device includes a shaft case, a rotary shaft, a plurality of stators, a plurality of brake discs, a piston member, and a pressing mechanism. The wet parking brake device is configured such that the brake discs and the stators come in contact with each other by a pressure from the piston member pressed by the pressing mechanism to thereby generate a braking force against the rotary shaft. The pressing mechanism includes a parking rod. The parking rod includes a rod main body, a turning shaft portion, and a connecting shaft. The shaft case includes an opening and a shaft hole. A length of the parking rod, the diameter of the shaft hole and the diameter of the turning shaft portion are respectively designed such that the turning shaft portion is inserted into the shaft hole when the parking rod is inserted from the opening.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 14, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Takashi Ogiwara
  • Patent number: 10969715
    Abstract: An image forming apparatus includes a control unit that changes a ratio between an execution time for executing printing and a stop time for stopping the printing according to any one of a stop control number that is the number of times that an operation of the printing is stopped, a stop control time that is the time during which the operation of the printing is stopped, a printing execution time that is the time during which the printing is executed, and a printing execution control number that is the number of times that the printing is executed, in an intermittent mode that operates by switching between executing the printing and stopping the printing.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: April 6, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Masafumi Yoshida, Takashi Ogiwara, Kazumasa Yasui
  • Patent number: 10768574
    Abstract: An image forming apparatus includes a developer; a heater below the developer; and a case for covering the heater. The apparatus further includes a first air duct of which an end in a first direction side communicates with the outside and which is formed at an inner side of the case, an end of the case in a second direction side opposite to the first direction side being blocked by a blocking plate; a duct arranged between the developer and the case, a second air duct of which an end on the first direction side communicates with the outside and contacting the case and which is formed at an inner side of the duct; a fan, arranged on the second direction side of both the first and second air ducts, configured to blow out air in the first direction side; a cover; and a guide.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: September 8, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takashi Ogiwara, Masafumi Yoshida, Kazuyoshi Takeshita, Kazumasa Yasui
  • Publication number: 20200278626
    Abstract: An image forming apparatus includes a control unit that changes a ratio between an execution time for executing printing and a stop time for stopping the printing according to any one of a stop control number that is the number of times that an operation of the printing is stopped, a stop control time that is the time during which the operation of the printing is stopped, a printing execution time that is the time during which the printing is executed, and a printing execution control number that is the number of times that the printing is executed, in an intermittent mode that operates by switching between executing the printing and stopping the printing.
    Type: Application
    Filed: January 27, 2020
    Publication date: September 3, 2020
    Inventors: Masafumi YOSHIDA, Takashi OGIWARA, Kazumasa YASUI
  • Publication number: 20190383337
    Abstract: A wet parking brake device includes a shaft case, a rotary shaft, a plurality of stators, a plurality of brake discs, a piston member, and a pressing mechanism. The wet parking brake device is configured such that the brake discs and the stators come in contact with each other by a pressure from the piston member pressed by the pressing mechanism to thereby generate a braking force against the rotary shaft. The pressing mechanism includes a parking rod. The parking rod includes a rod main body, a turning shaft portion, and a connecting shaft. The shaft case includes an opening and a shaft hole. A length of the parking rod, the diameter of the shaft hole and the diameter of the turning shaft portion are respectively designed such that the turning shaft portion is inserted into the shaft hole when the parking rod is inserted from the opening.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Takashi OGIWARA
  • Publication number: 20190107807
    Abstract: According to an embodiment, an image forming apparatus includes an air intake unit, a first blower path, a second blower path, and an air discharge unit. The air intake unit introduces air. The first blower path guides the air introduced by the air intake unit and cools the developer device. The second blower path ventilates an inside or a periphery of the charging device by using air guided from the first blower path. The air discharge unit discharges air guided from the second blower path to an outside of a predetermined range.
    Type: Application
    Filed: September 18, 2018
    Publication date: April 11, 2019
    Inventors: Tadao Kamano, Takashi Ogiwara
  • Patent number: 10191448
    Abstract: According to one embodiment, there is provided an image forming apparatus including a fixing portion, an exterior member, a first ventilation guide, a second ventilation guide, and a blowing portion. The exterior member has a first opening portion opened to an outside. The first ventilation guide is disposed between the fixing portion and the exterior member. The first ventilation guide forms a first space communicating with the first opening portion between the first ventilation guide and the exterior member. The second ventilation guide is disposed between the fixing portion and the first ventilation guide, and has a second opening portion. The second ventilation guide forms a second space communicating with the second opening portion between the second ventilation guide and the first ventilation guide.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: January 29, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takashi Ogiwara, Kazumasa Yasui
  • Publication number: 20180275602
    Abstract: According to one embodiment, there is provided an image forming apparatus including a fixing portion, an exterior member, a first ventilation guide, a second ventilation guide, and a blowing portion. The exterior member has a first opening portion opened to an outside. The first ventilation guide is disposed between the fixing portion and the exterior member. The first ventilation guide forms a first space communicating with the first opening portion between the first ventilation guide and the exterior member. The second ventilation guide is disposed between the fixing portion and the first ventilation guide, and has a second opening portion. The second ventilation guide forms a second space communicating with the second opening portion between the second ventilation guide and the first ventilation guide.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Inventors: Takashi Ogiwara, Kazumasa Yasui
  • Patent number: 9897952
    Abstract: An image forming apparatus comprises a paper feeding unit which feeds a sheet-shaped recording medium, an image forming unit which forms a toner image on the recording medium fed from the paper feeding unit, a fixing unit which fixes the toner image formed by the image forming unit on the recording medium, a stacking unit which stacks the recording medium on which the toner image is fixed by the fixing unit, a temperature sensor which detects the surface temperature of the recording mediums stacked on the stacking unit and a control unit which determines, according to the printing information of the recording medium, whether or not to feed a new recording medium from the paper feeding unit when the surface temperature of the recording mediums detected by the temperature sensor is above a threshold temperature.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: February 20, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yoshifumi Hasebe, Tadao Kamano, Takashi Ogiwara
  • Publication number: 20170082958
    Abstract: An image forming apparatus comprises a paper feeding unit which feeds a sheet-shaped recording medium, an image forming unit which forms a toner image on the recording medium fed from the paper feeding unit, a fixing unit which fixes the toner image formed by the image forming unit on the recording medium, a stacking unit which stacks the recording medium on which the toner image is fixed by the fixing unit, a temperature sensor which detects the surface temperature of the recording mediums stacked on the stacking unit and a control unit which determines, according to the printing information of the recording medium, whether or not to feed a new recording medium from the paper feeding unit when the surface temperature of the recording mediums detected by the temperature sensor is above a threshold temperature.
    Type: Application
    Filed: August 19, 2016
    Publication date: March 23, 2017
    Inventors: Yoshifumi Hasebe, Tadao Kamano, Takashi Ogiwara
  • Patent number: 9551968
    Abstract: An image forming apparatus comprises a paper feeding unit which feeds a sheet-shaped recording medium, an image forming unit which forms a toner image on the recording medium fed from the paper feeding unit, a fixing unit which fixes the toner image formed by the image forming unit on the recording medium, a stacking unit which stacks the recording medium on which the toner image is fixed by the fixing unit, a temperature sensor which detects the surface temperature of the recording mediums stacked on the stacking unit and a control unit which determines, according to the printing information of the recording medium, whether or not to feed a new recording medium from the paper feeding unit when the surface temperature of the recording mediums detected by the temperature sensor is above a threshold temperature.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: January 24, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yoshifumi Hasebe, Tadao Kamano, Takashi Ogiwara
  • Patent number: 9533563
    Abstract: A reduction gear includes a shaft that has a gear portion and a ring gear that is mounted on the shaft at a position away from the gear portion. The shaft has at the position in the outer periphery thereof a plurality of stepped first teeth arranged along the circumferential direction of the shaft. Each first tooth has a lower portion and a higher portion that is higher than and contiguous to the lower portion in the axial direction of the shaft, and the higher portion having a step surface that is contiguous to the lower portion. The ring gear has in the inner periphery thereof a plurality of second teeth arranged along the inner circumference of the ring gear, and the second teeth are fitted to grooves between the first teeth through splines. The second teeth are set in contact with the step surfaces of the first teeth.
    Type: Grant
    Filed: December 20, 2015
    Date of Patent: January 3, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Takashi Ogiwara
  • Patent number: 9411309
    Abstract: According to one embodiment, there is provided an image forming apparatus including a fan and a duct. The fan and the duct are provided in a housing. If the fan is driven, the duct guides the air flowing into the housing from an intake port of the housing toward components in the housing. The duct includes a bent section that changes a flowing direction of the air. The bent section includes holes.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 9, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Tadao Kamano, Yoshifumi Hasebe, Takashi Ogiwara
  • Publication number: 20160186852
    Abstract: A reduction gear includes a shaft that has a gear portion and a ring gear that is mounted on the shaft at a position that is away from the gear portion of the shaft. The shaft has at the position in outer periphery thereof a plurality of stepped first teeth arranged along circumferential direction of the shaft. Each first tooth has a lower portion and a higher portion that is higher than and contiguous to the lower portion in axial direction of the shaft, and the higher portion having a step surface that is contiguous to the lower portion. The ring gear has in inner periphery thereof a plurality of second teeth arranged along inner circumference of the ring gear, and the second teeth are fitted to grooves between the first teeth through splines. The second teeth are set in contact with the step surfaces of the first teeth.
    Type: Application
    Filed: December 20, 2015
    Publication date: June 30, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Takashi OGIWARA
  • Patent number: 9298160
    Abstract: An image forming apparatus of an embodiment has a printer portion, a fan motor, a counter, a timer, and a control unit. The control unit calculates a time interval between print jobs from the difference between a printing completion time of a first print job and a printing start time of a second print job based on the value which is measured by the timer when the print jobs are continuously performed. Furthermore, the control unit starts driving of the fan motor when the operation time of the printer portion which is counted by the counter or a value replaced with the operation time of the printer portion is greater than or equal to a second threshold value.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 29, 2016
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Takashi Ogiwara, Tadao Kamano, Yoshifumi Hasebe
  • Patent number: 9089213
    Abstract: According to one embodiment, a stabilizer includes a jaw portion which contacts a bottom of an apparatus, a fastener to fasten the stabilizer to a lateral side of the apparatus, and a foot portion extending from the bottom of the apparatus toward far side and in obliquely downward.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: July 28, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Sadahiro Masuda, Takashi Ogiwara
  • Publication number: 20140252931
    Abstract: According to one embodiment, a stabilizer includes a jaw portion which contacts a bottom of an apparatus, a fastener to fasten the stabilizer to a lateral side of the apparatus, and a foot portion extending from the bottom of the apparatus toward far side and in obliquely downward.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 11, 2014
    Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventors: Sadahiro MASUDA, Takashi Ogiwara
  • Patent number: 8693916
    Abstract: According to one embodiment, a stabilizer includes a jaw portion which contacts a bottom of an apparatus, a fastener to fasten the stabilizer to a lateral side of the apparatus, and a foot portion extending from the bottom of the apparatus toward far side and in obliquely downward.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 8, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Sadahiro Masuda, Takashi Ogiwara
  • Publication number: 20100308533
    Abstract: According to one embodiment, a stabilizer includes a jaw portion which contacts a bottom of an apparatus, a fastener to fasten the stabilizer to a lateral side of the apparatus, and a foot portion extending from the bottom of the apparatus toward far side and in obliquely downward.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 9, 2010
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Sadahiro MASUDA, Takashi OGIWARA
  • Patent number: 7848681
    Abstract: According to an embodiment of the invention, a revolver unit is rotationally driven by using three stepping motors. The weight of developing cartridges loaded on the revolver unit is identified on the basis of the quantity of remaining toner in toner cartridges. At the time of rotationally driving the revolver unit, output timing of the stepping motor closer to the developing cartridge which has a large quantity of remaining toner and has a heavy weight is made earlier, and output timing of the stepping motor far from this developing cartridge is delayed.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 7, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Takashi Ogiwara