Patents by Inventor Takayuki Umi

Takayuki Umi 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: 20240101380
    Abstract: A medium conveying apparatus includes a plurality of feed rollers, each feed roller rotating independently at a respective speed to feed a medium, a first sensor located on a downstream side of the plurality of feed rollers in a medium conveying direction and also in a central part in a direction perpendicular to the medium conveying direction, to detect the medium, a second sensor and a third sensor located on both sides of the first sensor in the direction perpendicular to the medium conveying direction, to respectively detect the medium, and a processor to change the speed of one of the plurality of feed rollers at least until the first sensor detects the medium when any of the second sensor or the third sensor detects the medium and the first sensor does not detect the medium within a predetermined time.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Inventors: Takayuki UMI, Shigerharu OKANO
  • Patent number: 11884506
    Abstract: A medium conveying apparatus includes a plurality of feed rollers, each feed roller rotating independently at a respective speed to feed a medium, a first sensor located on a downstream side of the plurality of feed rollers in a medium conveying direction and also in a central part in a direction perpendicular to the medium conveying direction, to detect the medium, a second sensor and a third sensor located on both sides of the first sensor in the direction perpendicular to the medium conveying direction, to respectively detect the medium, and a processor to change the speed of one of the plurality of feed rollers at least until the first sensor detects the medium when any of the second sensor or the third sensor detects the medium and the first sensor does not detect the medium within a predetermined time.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: January 30, 2024
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Patent number: 11834291
    Abstract: A medium conveying apparatus includes a medium tray, a feed roller to feed media placed on the medium tray in order from the lower side, a brake roller located to face the feed roller, a torque limiter to control a load applied to the brake roller, and a changing member to change a limit value of a torque of the torque limiter according to a height of the media placed on the medium tray.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: December 5, 2023
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Ryoichi Yasukawa
  • Patent number: 11673758
    Abstract: A medium conveying apparatus includes a housing including an accommodation portion provided with a guide portion at an end portion in a width direction, a tray accommodated in the accommodation portion so as to be pulled out, and including a placing surface for placing an ejected medium, and an engaging portion provided on a side surface of the tray, to engage the guide portion. The guide portion includes a pair of rails inclined upward and having a predetermined width. The engaging portion includes two protrusions provided so as to slide between the pair of rails and located apart from each other by a predetermined distance. By locating the two protrusions between the pair of rails, the tray is positioned at a predetermined position with respect to the housing with a front end portion of a downstream side in the medium ejecting direction located upward.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: June 13, 2023
    Assignee: PFU LIMITED
    Inventors: Ryuichi Nagai, Takayuki Umi
  • Patent number: 11649123
    Abstract: A medium conveying apparatus includes a setting member to set a torque limiter that defines a maximum torque applied to a brake roller to a first torque limiter or a second torque limiter, a unit including the first torque limiter, the second torque limiter and the brake roller, and a transmission member to transmit a drive force to the first torque limiter. The unit is swingably supported so that a predetermined force acts on the brake roller in a direction away from the feed roller when the driving force is transmitted. A force in a direction in which the brake roller presses the feed roller when the second torque limiter defines the maximum torque applied to the brake roller is greater than the force in the direction in which the brake roller presses the feed roller when the first torque limiter defines the maximum torque applied to the brake roller.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: May 16, 2023
    Assignee: PFU LIMITED
    Inventor: Takayuki Umi
  • Patent number: 11507010
    Abstract: A medium conveying apparatus includes a plurality of feed rollers spaced in a direction perpendicular to a medium conveying direction, each of the feed rollers rotating independently at a respective speed to feed a medium, a plurality of brake rollers, each of the plurality of brake rollers being located to face a corresponding one of the plurality of feed rollers, a plurality of torque limiters separately provided between one of rotation shafts of the plurality of brake rollers and a corresponding one of the plurality of brake rollers, and a processor to detect a skew of the medium, and correct the skew of the medium by changing the speed of one of the plurality of feed rollers when the skew of the medium is detected.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: November 22, 2022
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Patent number: 11472649
    Abstract: A medium conveying apparatus includes a medium tray, a feed roller to feed a medium placed on the medium tray, a brake roller facing the feed roller, a pressing member to press the brake roller to the feed roller side, a processor to detect media multi-feed, and control the feed roller and the brake roller in such a way that the medium is reset to the medium tray when the media multi-feed of media is detected. The processor controls the pressing member in such a way that a pressing force of the brake roller when resetting the medium to the medium tray is greater than a pressing force of the brake roller when feeding the medium.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 18, 2022
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Publication number: 20220253013
    Abstract: A medium conveying apparatus includes a plurality of feed rollers spaced in a direction perpendicular to a medium conveying direction, each of the feed rollers rotating independently at a respective speed to feed a medium, a plurality of brake rollers, each of the plurality of brake rollers being located to face a corresponding one of the plurality of feed rollers, a plurality of torque limiters separately provided between one of rotation shafts of the plurality of brake rollers and a corresponding one of the plurality of brake rollers, and a processor to detect a skew of the medium, and correct the skew of the medium by changing the speed of one of the plurality of feed rollers when the skew of the medium is detected.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 11, 2022
    Inventors: Takayuki Umi, Shigeharu Okano
  • Patent number: 11402787
    Abstract: A medium conveying apparatus includes a plurality of feed rollers spaced in a direction perpendicular to a medium conveying direction, each of the feed rollers rotating independently at a respective speed to feed a medium, a plurality of brake rollers, each of the plurality of brake rollers being located to face a corresponding one of the plurality of feed rollers, a plurality of torque limiters separately provided between one of rotation shafts of the plurality of brake rollers and a corresponding one of the plurality of brake rollers, and a processor to detect a skew of the medium, and correct the skew of the medium by changing the speed of one of the plurality of feed rollers when the skew of the medium is detected.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: August 2, 2022
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Publication number: 20220169471
    Abstract: A medium conveying apparatus includes a housing including an accommodation portion provided with a guide portion at an end portion in a width direction, a tray accommodated in the accommodation portion so as to be pulled out, and including a placing surface for placing an ejected medium, and an engaging portion provided on a side surface of the tray, to engage the guide portion. The guide portion includes a pair of rails inclined upward and having a predetermined width. The engaging portion includes two protrusions provided so as to slide between the pair of rails and located apart from each other by a predetermined distance. By locating the two protrusions between the pair of rails, the tray is positioned at a predetermined position with respect to the housing with a front end portion of a downstream side in the medium ejecting direction located upward.
    Type: Application
    Filed: October 8, 2021
    Publication date: June 2, 2022
    Inventors: Ryuichi Nagai, Takayuki Umi
  • Publication number: 20220169463
    Abstract: A medium conveying apparatus includes a torque limiter provided on a rotation axis of the separation roller, a unit including a first gear, a second gear provided on the rotation axis, and a third gear provided between the first gear and the second gear. The separation roller is pressed toward a feed roller side by a force generated by the torque limiter. The first gear rotates in a direction for generating a force for separating the separation roller from the feed roller. The third gear is a two-stage gear. The number of teeth of a gear on the second gear side of the third gear is more than the number of teeth of a gear on the first gear side of the third gear.
    Type: Application
    Filed: October 7, 2021
    Publication date: June 2, 2022
    Inventor: Takayuki Umi
  • Patent number: 11339018
    Abstract: A medium conveying apparatus includes a feed roller, a brake roller, a motor to generate a driving force, a first transmission mechanism to transmit the driving force to the brake roller through a first torque limiter, to rotate the brake roller in a direction opposite to a medium feeding direction, a second transmission mechanism to transmit the driving force to the brake roller through a second torque limiter, bypassing the first torque limiter, to rotate the brake roller in the direction opposite to the medium feeding direction, and a processor to detect media multi-feed, and perform control in such a way as to transmit the driving force to the brake roller by the second transmission mechanism and also cause the feed roller to be driven to rotate in the direction opposite to the medium feeding direction by the brake roller, when the media multi-feed is detected.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: May 24, 2022
    Assignee: PFU LIMITED
    Inventors: Shigeharu Okano, Takayuki Umi
  • Publication number: 20220081240
    Abstract: A medium conveying apparatus includes a plurality of feed rollers, each feed roller rotating independently at a respective speed to feed a medium, a first sensor located on a downstream side of the plurality of feed rollers in a medium conveying direction and also in a central part in a direction perpendicular to the medium conveying direction, to detect the medium, a second sensor and a third sensor located on both sides of the first sensor in the direction perpendicular to the medium conveying direction, to respectively detect the medium, and a processor to change the speed of one of the plurality of feed rollers at least until the first sensor detects the medium when any of the second sensor or the third sensor detects the medium and the first sensor does not detect the medium within a predetermined time.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Inventors: Takayuki UMI, Shigerharu OKANO
  • Patent number: 11208279
    Abstract: A medium conveying apparatus includes a plurality of feed rollers, each feed roller rotating independently at a respective speed to feed a medium, a first sensor located on a downstream side of the plurality of feed rollers in a medium conveying direction and also in a central part in a direction perpendicular to the medium conveying direction, to detect the medium, a second sensor and a third sensor located on both sides of the first sensor in the direction perpendicular to the medium conveying direction, to respectively detect the medium, and a processor to change the speed of one of the plurality of feed rollers at least until the first sensor detects the medium when any of the second sensor or the third sensor detects the medium and the first sensor does not detect the medium within a predetermined time.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: December 28, 2021
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Publication number: 20210302895
    Abstract: A medium conveying apparatus includes a plurality of feed rollers spaced in a direction perpendicular to a medium conveying direction, each of the feed rollers rotating independently at a respective speed to feed a medium, a plurality of brake rollers, each of the plurality of brake rollers being located to face a corresponding one of the plurality of feed rollers, a plurality of torque limiters separately provided between one of rotation shafts of the plurality of brake rollers and a corresponding one of the plurality of brake rollers, and a processor to detect a skew of the medium, and correct the skew of the medium by changing the speed of one of the plurality of feed rollers when the skew of the medium is detected.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Inventors: Takayuki Umi, Shigeharu Okano
  • Patent number: 11067935
    Abstract: A medium conveying apparatus includes a plurality of feed rollers spaced in a direction perpendicular to a medium conveying direction, each of the feed rollers rotating independently at a respective speed to feed a medium, a plurality of brake rollers, each of the plurality of brake rollers being located to face a corresponding one of the plurality of feed rollers, a plurality of torque limiters separately provided between one of rotation shafts of the plurality of brake rollers and a corresponding one of the plurality of brake rollers, and a processor to detect a skew of the medium, and correct the skew of the medium by changing the speed of one of the plurality of feed rollers when the skew of the medium is detected.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 20, 2021
    Assignee: PFU LIMITED
    Inventors: Takayuki Umi, Shigeharu Okano
  • Publication number: 20210188575
    Abstract: A medium conveying apparatus includes a setting member to set a torque limiter that defines a maximum torque applied to a brake roller to a first torque limiter or a second torque limiter, a unit including the first torque limiter, the second torque limiter and the brake roller, and a transmission member to transmit a drive force to the first torque limiter. The unit is swingably supported so that a predetermined force acts on the brake roller in a direction away from the feed roller when the driving force is transmitted. A force in a direction in which the brake roller presses the feed roller when the second torque limiter defines the maximum torque applied to the brake roller is greater than the force in the direction in which the brake roller presses the feed roller when the first torque limiter defines the maximum torque applied to the brake roller.
    Type: Application
    Filed: November 12, 2020
    Publication date: June 24, 2021
    Inventor: Takayuki Umi
  • Publication number: 20210188576
    Abstract: A medium conveying apparatus includes a medium tray, a feed roller to feed media placed on the medium tray in order from the lower side, a brake roller located to face the feed roller, a torque limiter to control a load applied to the brake roller, and a changing member to change a limit value of a torque of the torque limiter according to a height of the media placed on the medium tray.
    Type: Application
    Filed: July 10, 2020
    Publication date: June 24, 2021
    Inventors: Takayuki Umi, Ryoichi Yasukawa
  • Publication number: 20200299088
    Abstract: A medium conveying apparatus includes a medium tray, a feed roller to feed a medium placed on the medium tray, a brake roller facing the feed roller, a pressing member to press the brake roller to the feed roller side, a processor to detect media multi-feed, and control the feed roller and the brake roller in such a way that the medium is reset to the medium tray when the media multi-feed of media is detected. The processor controls the pressing member in such a way that a pressing force of the brake roller when resetting the medium to the medium tray is greater than a pressing force of the brake roller when feeding the medium.
    Type: Application
    Filed: October 29, 2019
    Publication date: September 24, 2020
    Inventors: Takayuki Umi, Shigeharu Okano
  • Publication number: 20200299091
    Abstract: A medium conveying apparatus includes a plurality of feed rollers, each feed roller rotating independently at a respective speed to feed a medium, a first sensor located on a downstream side of the plurality of feed rollers in a medium conveying direction and also in a central part in a direction perpendicular to the medium conveying direction, to detect the medium, a second sensor and a third sensor located on both sides of the first sensor in the direction perpendicular to the medium conveying direction, to respectively detect the medium, and a processor to change the speed of one of the plurality of feed rollers at least until the first sensor detects the medium when any of the second sensor or the third sensor detects the medium and the first sensor does not detect the medium within a predetermined time.
    Type: Application
    Filed: October 29, 2019
    Publication date: September 24, 2020
    Inventors: Takayuki UMI, Shigeharu OKANO