Patents by Inventor Kazumasa Yasui

Kazumasa Yasui 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: 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
  • Patent number: 10742827
    Abstract: An image forming apparatus includes a scanner, a printer configured to print an image based on an image read by the scanner, a memory, and a processor. The processor is configured to control the printer to print an adjustment test pattern on a first sheet, and the scanner to scan the adjustment test pattern on the first sheet, determine a setting value for adjusting positioning of an image to be printed by the printer on a sheet of the first sheet size, such that an image center matches a sheet center in a main scanning direction and a sub-scanning direction, and store the determined setting value in the memory. The processor is configured to modify the setting value stored in the memory based on sheet information related to a second sheet to be used for printing, the second sheet having a second sheet size different from the first sheet size.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: August 11, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazumasa Yasui, Tomokazu Sakabe, Eizo Kurita, Kyosuke Terada
  • Patent number: 10703124
    Abstract: According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: July 7, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yosuke Nishimura, Kazumasa Yasui
  • Publication number: 20200021704
    Abstract: An image forming apparatus includes a scanner, a printer for printing an image based on an image read by the scanner, a memory storing a setting value for adjusting positioning of an image to be printed by the printer on a sheet of a sheet size, and sheet size information specifying the sheet size corresponding to the setting value, a display, and a processor. The processor is configured to control the display to display an operation guidance screen for readjustment of the setting value, control the scanner to perform a scanning of a sheet provided in accordance with the operation guidance screen, acquire, as a readjustment sheet size, a size of the provided sheet based on a scanning result of the scanning, and update the setting value stored in the memory based on a difference between the sheet size indicated by the sheet size information and the readjustment sheet size.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 16, 2020
    Inventor: Kazumasa YASUI
  • Publication number: 20200019101
    Abstract: An image forming apparatus includes a scanner, a printer configured to print an image based on an image read by the scanner, a memory, and a processor. The memory stores a setting value for adjusting positioning of an image to be printed by the printer on a sheet of a sheet size, and sheet size information specifying the sheet size corresponding to the setting value. The processor is configured to acquire, as a readjustment sheet size, a size of a sheet used for readjustment of the setting value upon receiving an instruction to perform the readjustment, and update the setting value stored in the memory based on a difference between the sheet size indicated by the sheet size information and the readjustment sheet size.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 16, 2020
    Inventor: Kazumasa YASUI
  • Publication number: 20200019103
    Abstract: An image forming apparatus includes a scanner, a printer configured to print an image based on an image read by the scanner, a memory, and a processor. The memory stores a setting value for adjusting positioning of an image to be printed by the printer on a first sheet of a first sheet size, and sheet size information specifying the first sheet size corresponding to the setting value. The processor is configured to modify the setting value stored in the memory based on sheet information related to a second sheet to be used for printing, the second sheet having a second sheet size different from the first sheet size.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 16, 2020
    Inventors: Kazumasa YASUI, Tomokazu SAKABE, Eizo KURITA, Kyosuke TERADA
  • Publication number: 20200021705
    Abstract: An image forming apparatus includes a scanner, a printer configured to print an image based on an image read by the scanner, a memory, and a processor. The processor is configured to control the printer to print an adjustment test pattern on a first sheet, and the scanner to scan the adjustment test pattern on the first sheet, determine a setting value for adjusting positioning of an image to be printed by the printer on a sheet of the first sheet size, such that an image center matches a sheet center in a main scanning direction and a sub-scanning direction, and store the determined setting value in the memory. The processor is configured to modify the setting value stored in the memory based on sheet information related to a second sheet to be used for printing, the second sheet having a second sheet size different from the first sheet size.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 16, 2020
    Inventors: Kazumasa YASUI, Tomokazu SAKABE, Eizo KURITA, Kyosuke TERADA
  • Publication number: 20190184730
    Abstract: According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 20, 2019
    Inventors: Yosuke NISHIMURA, Kazumasa YASUI
  • Patent number: 10245871
    Abstract: According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: April 2, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Yosuke Nishimura, Kazumasa Yasui
  • 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
  • Patent number: 10185264
    Abstract: An image forming apparatus includes an image forming section, a sensor and a control section. The image forming section forms a first image with at least two kinds of developing agents with different fixation properties. The sensor detects the first image formed on an image formed section by the image forming section. The control section amends deviation of the first image on the image formed section by the image forming section when a detection result of the sensor that the first image formed by the image forming section is not formed at a predetermined position of the image formed section.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: January 22, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Kazumasa Yasui
  • Publication number: 20180307166
    Abstract: An image forming apparatus includes an image forming section, a sensor and a control section. The image forming section forms a first image with at least two kinds of developing agents with different fixation properties. The sensor detects the first image formed on an image formed section by the image forming section. The control section amends deviation of the first image on the image formed section by the image forming section when a detection result of the sensor that the first image formed by the image forming section is not formed at a predetermined position of the image formed section.
    Type: Application
    Filed: September 27, 2017
    Publication date: October 25, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: 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
  • Publication number: 20170015128
    Abstract: According to an embodiment, an image erasing apparatus includes a reading unit, an erasing unit, an image forming unit, and a controller. The reading unit reads identification information formed on a sheet conveyed. The erasing unit erases a part or all of a first image formed on the sheet after the identification information is read. The controller obtains image data corresponding to the identification information that is read by the reading unit. The controller controls the image forming unit so as to form a second image, which is indicated by the obtained image data, onto the sheet from which the first image has been erased.
    Type: Application
    Filed: May 31, 2016
    Publication date: January 19, 2017
    Inventors: Yosuke NISHIMURA, Kazumasa YASUI
  • Patent number: 9195478
    Abstract: According to one embodiment, a display device includes a detecting section configured to detect information concerning a sheet, a control section configured to set image guidance according to a result of the detection by the detecting section, and a display section configured to display the image guidance set by the control section.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 24, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Kazumasa Yasui
  • Publication number: 20130077111
    Abstract: According to one embodiment, a display device includes a detecting section configured to detect information concerning a sheet, a control section configured to set image guidance according to a result of the detection by the detecting section, and a display section configured to display the image guidance set by the control section.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Applicants: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Toshiba
    Inventor: Kazumasa YASUI
  • Patent number: 8282092
    Abstract: To provide an image forming apparatus that can highly accurately position and convey, even if an inter-sheet distance of sheets to be conveyed is reduced, the sheets from registration rollers to a transfer position when a toner image on an image bearing member moving at process speed is transferred onto the sheet in the transfer position. A sheet fed from a paper feeding cassette by a pulse-motor driven paper feeding roller is conveyed to pulse-motor driven registration rollers by pulse-motor driven conveying rollers. When the sheet is conveyed to the transfer position according to restart of the registration rollers, the sheet is conveyed by the registration rollers at sheet conveying speed different from the process speed before the leading end of the sheet reaches the transfer position and is conveyed at the process speed after that.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 9, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Kazumasa Yasui, Masaya Arakawa
  • Patent number: 8201821
    Abstract: A paper feeding cassette includes: a cassette case configured to store sheets; a sheet tray on which the sheets are stacked, the sheet tray being rotatably attached to the cassette case; a push-up member configured to push up the sheet tray and rotate the sheet tray in one direction when driving force is input and release the push-up of the sheet tray to allow rotation of the sheet tray in the other direction when the input of the driving force is interrupted; and a buffer member configured to be nipped by the cassette case and the sheet tray and elastically deformed when the sheet tray rotates in the other direction. The buffer member is located, when viewed from a stacking direction of the sheets, in an area closer to a rotation axis of the sheet tray than a distal end of the sheet tray that is most distant from the rotation axis in the sheet tray.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: June 19, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Masahiro Ohno, Kazumasa Yasui
  • Patent number: 8200141
    Abstract: An interlock switch is switched according to the movement of a relay reversal unit rather than the movement of a front cover. The relay reversal unit is connected to a driver substrate by a drawer connector. The change-over of the interlock switch according to the movement of the relay reversal unit is turned off when margin time elapses after a cover detection switch is turned off.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: June 12, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Matsushima, Kazumasa Yasui, Masataka Muratani