Patents by Inventor Masanari Fujita

Masanari Fujita 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).

  • Publication number: 20210288074
    Abstract: A semiconductor memory according to an embodiment includes a first conductor, a first insulator and memory pillars. The first conductor and the first insulator are alternately stacked along a first direction. The memory pillars penetrates through the stacked first conductor and first insulator. Each of the memory pillars include a semiconductor, a tunnel insulating film, a second insulator, and a block insulating film. The memory pillars include a first memory pillar. The stacked first insulator includes a first layer and a second layer that are adjacent to each other in the first direction. The first conductor between the first layer and the second layer includes a first conductive part, a second conductive part, and a first dissimilar conductive part.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: Toshiba Memory Corporation
    Inventor: Masanari FUJITA
  • Patent number: 11112734
    Abstract: A belt device includes a belt wound around a plurality of rollers, one of the plurality of rollers, and a belt contact member disposed on the one of the plurality of rollers. The belt rotates along with the plurality of rollers. The belt contact member faces an edge of the belt in an axial direction of the one of the plurality of rollers and includes a flat portion and a separation portion. The flat portion forms a plane perpendicular to the axial direction of the one of the plurality of rollers. The separation portion is disposed outboard of the flat portion in a radial direction of the one of the plurality of rollers and has a surface located farther from the edge of the belt than the flat portion in the axial direction of the one of the plurality of rollers.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: September 7, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Kumagai, Masanari Fujita, Katsuya Kawagoe, Masaharu Furuya, Hiroki Nakamatsu, Yoshiki Hozumi
  • Patent number: 11081494
    Abstract: A semiconductor memory according to an embodiment includes a first conductor, a first insulator and memory pillars. The first conductor and the first insulator are alternately stacked along a first direction. The memory pillars penetrates through the stacked first conductor and first insulator. Each of the memory pillars include a semiconductor, a tunnel insulating film, a second insulator, and a block insulating film. The memory pillars include a first memory pillar. The stacked first insulator includes a first layer and a second layer that are adjacent to each other in the first direction. The first conductor between the first layer and the second layer includes a first conductive part, a second conductive part, and a first dissimilar conductive part.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 3, 2021
    Assignee: Toshiba Memory Corporation
    Inventor: Masanari Fujita
  • Patent number: 10955771
    Abstract: A belt control device includes a plurality of rollers, a belt wound around the plurality of rollers and configured to rotate along with the plurality of rollers, a belt contact member that the belt contacts when the belt moves in an axial direction of the plurality of rollers, and a shaft displacement member movable in the axial direction and including an inclined face inclined with respect to a surface of the belt to control movement of the belt in the axial direction. The belt, the belt contact member, and the shaft displacement member are configured to make a frictional force between an edge of the belt and the belt contact member greater than a frictional force between the belt contact member and the shaft displacement member.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: March 23, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Kumagai, Masanari Fujita, Katsuya Kawagoe, Masaharu Furuya, Hiroki Nakamatsu, Yoshiki Hozumi
  • Publication number: 20210018862
    Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomohiro KUBOTA, Naoki NAKATAKE, Yoshiyuki SHIMIZU, Shoh TSURITANI, Manabu HAMADA, Masato TSUJI, Masanari FUJITA
  • Patent number: 10816914
    Abstract: A removable device detachably attachable to a receiving structure includes a convex to be inserted into a groove of the receiving structure, a rotator to rotate around a rotational shaft, a recess at a rear side of the convex, a gear attached to the rotational shaft, and a gear cover to cover at least a part of the gear. Further, an end of the rotational shaft is inserted into the recess, part of the gear is exposed from the gear cover, and a peripheral of the end of the rotational shaft is surrounded by the gear cover.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 27, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Patent number: 10797077
    Abstract: According to one embodiment, it includes a stacked body including N-number of layers (N is an integer of 2 or more) stacked on a semiconductor substrate, opening portions penetrating the stacked body in a stacking direction, columnar bodies respectively disposed in the opening portions, and a slit dividing M-number of layers (M is an integer of 1 or more and (N?2) or less) of the stacked body in a horizontal direction from above, wherein the slit is formed with lateral surfaces respectively having a spatial periodicity in a horizontal plane.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 6, 2020
    Assignee: Toshiba Memory Corporation
    Inventors: Genki Kawaguchi, Masanari Fujita, Hideki Inokuma, Osamu Matsuura, Takeshi Imamura, Hideo Wada, Makoto Watanabe, Hajime Kaneko, Kenichi Fujii, Takanobu Itoh
  • Publication number: 20200301321
    Abstract: A belt control device includes a plurality of rollers, a belt wound around the plurality of rollers and configured to rotate along with the plurality of rollers, a belt contact member that the belt contacts when the belt moves in an axial direction of the plurality of rollers, and a shaft displacement member movable in the axial direction and including an inclined face inclined with respect to a surface of the belt to control movement of the belt in the axial direction. The belt, the belt contact member, and the shaft displacement member are configured to make a frictional force between an edge of the belt and the belt contact member greater than a frictional force between the belt contact member and the shaft displacement member.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 24, 2020
    Inventors: Naohiro KUMAGAI, Masanari FUJITA, Katsuya KAWAGOE, Masaharu FURUYA, Hiroki NAKAMATSU, Yoshiki HOZUMI
  • Publication number: 20200301322
    Abstract: A belt device includes a belt wound around a plurality of rollers, one of the plurality of rollers, and a belt contact member disposed on the one of the plurality of rollers. The belt rotates along with the plurality of rollers. The belt contact member faces an edge of the belt in an axial direction of the one of the plurality of rollers and includes a flat portion and a separation portion. The flat portion forms a plane perpendicular to the axial direction of the one of the plurality of rollers. The separation portion is disposed outboard of the flat portion in a radial direction of the one of the plurality of rollers and has a surface located farther from the edge of the belt than the flat portion in the axial direction of the one of the plurality of rollers.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 24, 2020
    Inventors: Naohiro KUMAGAI, Masanari FUJITA, Katsuya KAWAGOE, Masaharu FURUYA, Hiroki NAKAMATSU, Yoshiki HOZUMI
  • Publication number: 20200125005
    Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Publication number: 20200111809
    Abstract: According to one embodiment, it includes a stacked body including N-number of layers (N is an integer of 2 or more) stacked on a semiconductor substrate, opening portions penetrating the stacked body in a stacking direction, columnar bodies respectively disposed in the opening portions, and a slit dividing M-number of layers (M is an integer of 1 or more and (N-2) or less) of the stacked body in a horizontal direction from above, wherein the slit is formed with lateral surfaces respectively having a spatial periodicity in a horizontal plane.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 9, 2020
    Applicant: Toshiba Memory Corporation
    Inventors: Genki KAWAGUCHI, Masanari FUJITA, Hideki INOKUMA, Osamu MATSUURA, Takeshi IMAMURA, Hideo WADA, Makoto WATANABE, Hajime KANEKO, Kenichi FUJII, Takanobu ITOH
  • Patent number: 10558145
    Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: February 11, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Patent number: 10541251
    Abstract: According to one embodiment, it includes a stacked body including N-number of layers (N is an integer of 2 or more) stacked on a semiconductor substrate, opening portions penetrating the stacked body in a stacking direction, columnar bodies respectively disposed in the opening portions, and a slit dividing M-number of layers (M is an integer of 1 or more and (N?2) or less) of the stacked body in a horizontal direction from above, wherein the slit is formed with lateral surfaces respectively having a spatial periodicity in a horizontal plane.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: January 21, 2020
    Assignee: Toshiba Memory Corporation
    Inventors: Genki Kawaguchi, Masanari Fujita, Hideki Inokuma, Osamu Matsuura, Takeshi Imamura, Hideo Wada, Makoto Watanabe, Hajime Kaneko, Kenichi Fujii, Takanobu Itoh
  • Publication number: 20200013796
    Abstract: A semiconductor memory according to an embodiment includes a first conductor, a first insulator and memory pillars. The first conductor and the first insulator are alternately stacked along a first direction. The memory pillars penetrates through the stacked first conductor and first insulator. Each of the memory pillars include a semiconductor, a tunnel insulating film, a second insulator, and a block insulating film. The memory pillars include a first memory pillar. The stacked first insulator includes a first layer and a second layer that are adjacent to each other in the first direction. The first conductor between the first layer and the second layer includes a first conductive part, a second conductive part, and a first dissimilar conductive part.
    Type: Application
    Filed: January 30, 2019
    Publication date: January 9, 2020
    Applicant: Toshiba Memory Corporation
    Inventor: Masanari FUJITA
  • Patent number: 10403636
    Abstract: A semiconductor memory device according to the embodiment includes a substrate, electrodes, at least one pillar structure, at least one charge storage film, and at least one insulating member. The electrodes are provided on the substrate, are separately stacked each other, and constitute a stacked body. The electrodes have a first width in a first direction along a surface of the substrate and include a portion extending in a second direction crossing the first direction along the surface. The pillar structure is provided in the stacked body and includes a semiconductor layer extending in a stacking direction of the stacked body. The charge storage film is provided between the semiconductor layer and the electrodes. The insulating member has a width in the first direction smaller than the first width, pierces the electrodes, and is provided to extend in the stacking direction.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: September 3, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Hideki Inokuma, Osamu Matsuura, Masanari Fujita
  • Publication number: 20190250533
    Abstract: The developer container includes a rotator that is rotated in the container body, a sequence of gears disposed outside the developer container that transmits a torque to the rotator, and a container guiding portion that fits with a main body side guiding portion and guides the developer container in a direction in which the developer container is attached to a mounting portion of an image forming device main body. A first gear included in the sequence of the gears is movable between an operating position where the first gear engages with a second gear and a retracted position where the first gear is retracted. On a surface on which the container guiding portion is disposed, a part of the container guiding portion is disposed within a projected area of the first gear being disposed at the operating position.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Patent number: 10295933
    Abstract: A removable device is to be detachably attached to an apparatus main body. The removable device includes a conveying drive gear attached to a first rotational shaft, an agitating drive gear attached to a second rotational shaft, and a torque transmission gear attached to a third rotational shaft. When an addendum circle diameter of the conveying drive gear is A, and an addendum circle diameter of the agitating drive gear is B, B>A is satisfied. The torque transmission gear moves around the conveying drive gear to access the agitating drive gear.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: May 21, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Publication number: 20190094758
    Abstract: A removable device is to be detachably attached to an apparatus main body. The removable device includes a conveying drive gear attached to a first rotational shaft, an agitating drive gear attached to a second rotational shaft, and a torque transmission gear attached to a third rotational shaft. When an addendum circle diameter of the conveying drive gear is A, and an addendum circle diameter of the agitating drive gear is B, B>A is satisfied. The torque transmission gear moves around the conveying drive gear to access the agitating drive gear.
    Type: Application
    Filed: November 26, 2018
    Publication date: March 28, 2019
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita
  • Patent number: 10199498
    Abstract: According to one embodiment, a semiconductor memory device includes a substrate, a stacked body, a pillar structure, at least one charge storage film, and a first electrode. The stacked body includes electrode films stacked separately from each other. The pillar structure is provided in the stacked body and includes a semiconductor layer extending in stacking direction of the stacked body. The charge storage film is provided between the semiconductor layer and the electrode films. The first electrode is provided in the stacked body, spreads in the stacking direction and a first direction along a surface of the substrate, and contacting the substrate. The first electrode includes a first portion containing a material having conductivity and a second portion containing a material that a linear expansion coefficient is lower than a linear expansion coefficient of silicon, and positioned at a substrate side than the first portion in the stacking direction.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: February 5, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Osamu Matsuura, Hideki Inokuma, Masanari Fujita
  • Patent number: 10175607
    Abstract: A removable developer container includes a convex portion to be inserted into a groove of an apparatus main body, a rotator to rotate around a rotational shaft, and a recess convex portion to be inserted into a groove of an apparatus main body, at a rear side of the convex portion. One end of the rotational shaft is inserted into the recess.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: January 8, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Kubota, Naoki Nakatake, Yoshiyuki Shimizu, Shoh Tsuritani, Manabu Hamada, Masato Tsuji, Masanari Fujita