Patents by Inventor Kei Onishi

Kei Onishi 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: 20230350323
    Abstract: An image forming apparatus includes a developing roller, a developing motor, a blade, and a controller. The developing roller includes a sleeve configured to carry a developer that is supplied to an electrostatic latent image held by an image carrier. The developing motor is configured to rotate the sleeve in any one of a first direction or a second direction opposite to the first direction. The blade is configured to regulate a thickness of a layer of the developer that is carried by the sleeve rotating in the first direction with the developing motor. The controller is configured to rotate the sleeve in the second direction with the developing motor until a surface of the sleeve present in a peel-off region of the developer arrives at a facing position facing the blade after development on the electrostatic latent image held by the image carrier ends.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 2, 2023
    Inventors: Kei Onishi, Daisuke Yamashita
  • Patent number: 11675301
    Abstract: According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: June 13, 2023
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kei Onishi, Satoshi Itaya
  • Publication number: 20220269203
    Abstract: According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
    Type: Application
    Filed: February 10, 2022
    Publication date: August 25, 2022
    Inventors: Kei Onishi, Satoshi Itaya
  • Patent number: 11281143
    Abstract: According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: March 22, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kei Onishi, Satoshi Itaya
  • Patent number: 11226586
    Abstract: According to one embodiment, an image forming apparatus includes a developing device, an environment sensor, a memory, and a processor. The developing device stores a developer containing a toner and a carrier. The environment sensor measures an environment parameter. The memory stores end time environment information indicating an environment parameter of a date and time when printing is ended. The processor discharges the toner stored in the developing device when a difference between the environment parameter indicated by the end time environment information and the environment parameter measured by the environment sensor exceeds a predetermined threshold value, and puts the toner into the developing device.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 18, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kei Onishi, Daisuke Yamashita
  • Patent number: 11135795
    Abstract: Cord ply joiner for a tire includes a first pressurizer having first pressing member and first pressure receiving member in upper and lower sides, and a second pressurizer having second pressing member and second pressure receiving member in the upper and lower sides. A first code ply positioning mechanism positions a first code ply by bringing a tail end of the first code ply into contact with a side surface of the second pressure receiving member, a first code ply fixing mechanism lowers the cord end pressing member so the first cord ply is fixed, and a second code ply positioning mechanism positions the tip of the second code ply by bringing the tip into contact with a side surface of the cord end pressing member. The first pressurizer and the second pressurizer are brought close to each other, whereby a shearing force is applied to an overlapped portion.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: October 5, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kei Onishi, Hiroshi Uchida
  • Patent number: 11110679
    Abstract: A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 7, 2021
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kei Onishi
  • Patent number: 11048197
    Abstract: An image forming apparatus includes a developer container, an agitator, a toner supply, a toner sensor, and a controller. The developer container contains a two-component developer that includes toner and carrier. The agitator stirs the two-component developer. The toner supply replenishes the developer container with additional toner. The toner sensor detects a toner density of the two-component developer in the developer container. The controller calibrates the toner sensor using the two-component developer. The controller compares a first detection value indicating a toner density at a first time with a second detection value indicating a toner density at a second time after a predetermined time period has elapsed since the first time. The controller issues a notification regarding a suitability of calibration based on a comparison result of the first detection value and the second detection value.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: June 29, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Kei Onishi
  • Publication number: 20210072687
    Abstract: According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 11, 2021
    Inventors: Kei Onishi, Satoshi Itaya
  • Publication number: 20210072686
    Abstract: According to one embodiment, an image forming apparatus includes a printer and a controller. The printer performs image formation on a sheet at a first speed relating to a speed of image formation or at a second speed slower than the first speed. The controller acquires information on deterioration of developer contained in an own apparatus, and controls the printer to perform image formation at the first speed when the information does not satisfy a predetermined condition indicating that the developer is deteriorated and to perform image formation at the second speed when the information satisfies the predetermined condition.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 11, 2021
    Inventors: Kei Onishi, Satoshi Itaya
  • Patent number: 10503095
    Abstract: An image forming apparatus of an exemplary embodiment includes a temperature sensor, a developing unit, a supply unit, and a control unit. The temperature sensor detects a temperature. The developing unit supplies developer to an image carrier and performs development. The supply unit contains developer and supplies the contained developer to the developing unit. The control unit executes developer replacement processing including discharging the developer from the developing unit and supplying the developer contained in the supply unit to the developing unit based on a first ratio which a ratio of a developer supply time during which the supply unit performs supply of the developer for the developing unit and a drive time during which the developing unit is driven and a threshold value obtained based on a detected temperature of a temperature sensor.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 10, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Koji Imamiya, Kei Onishi
  • Publication number: 20190240940
    Abstract: A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 8, 2019
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Kei ONISHI
  • Publication number: 20190084258
    Abstract: Cord ply joiner for a tire includes a first pressurizer having first pressing member and first pressure receiving member in upper and lower sides, and a second pressurizer having second pressing member and second pressure receiving member in the upper and lower sides. A first code ply positioning mechanism positions a first code ply by bringing a tail end of the first code ply into contact with a side surface of the second pressure receiving member, a first code ply fixing mechanism lowers the cord end pressing member so the first cord ply is fixed, and a second code ply positioning mechanism positions the tip of the second code ply by bringing the tip into contact with a side surface of the cord end pressing member. The first pressurizer and the second pressurizer are brought close to each other, whereby a shearing force is applied to an overlapped portion.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 21, 2019
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kei ONISHI, Hiroshi UCHIDA
  • Publication number: 20180321613
    Abstract: An image forming apparatus of an exemplary embodiment includes a temperature sensor, a developing unit, a supply unit, and a control unit. The temperature sensor detects a temperature. The developing unit supplies developer to an image carrier and performs development. The supply unit contains developer and supplies the contained developer to the developing unit. The control unit executes developer replacement processing including discharging the developer from the developing unit and supplying the developer contained in the supply unit to the developing unit based on a first ratio which a ratio of a developer supply time during which the supply unit performs supply of the developer for the developing unit and a drive time during which the developing unit is driven and a threshold value obtained based on a detected temperature of a temperature sensor.
    Type: Application
    Filed: June 27, 2018
    Publication date: November 8, 2018
    Inventors: Koji Imamiya, Kei Onishi
  • Patent number: 10036978
    Abstract: An image forming apparatus of an exemplary embodiment includes a temperature sensor, a developing unit, a supply unit, and a control unit. The temperature sensor detects a temperature. The developing unit supplies developer to an image carrier and performs development. The supply unit contains developer and supplies the contained developer to the developing unit. The control unit executes developer replacement processing including discharging the developer from the developing unit and supplying the developer contained in the supply unit to the developing unit based on a first ratio which a ratio of a developer supply time during which the supply unit performs supply of the developer for the developing unit and a drive time during which the developing unit is driven and a threshold value obtained based on a detected temperature of a temperature sensor.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: July 31, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Koji Imamiya, Kei Onishi
  • Publication number: 20180120732
    Abstract: An image forming apparatus of an exemplary embodiment includes a temperature sensor, a developing unit, a supply unit, and a control unit. The temperature sensor detects a temperature. The developing unit supplies developer to an image carrier and performs development. The supply unit contains developer and supplies the contained developer to the developing unit. The control unit executes developer replacement processing including discharging the developer from the developing unit and supplying the developer contained in the supply unit to the developing unit based on a first ratio which a ratio of a developer supply time during which the supply unit performs supply of the developer for the developing unit and a drive time during which the developing unit is driven and a threshold value obtained based on a detected temperature of a temperature sensor.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 3, 2018
    Inventors: Koji Imamiya, Kei Onishi
  • Patent number: 9454105
    Abstract: An image forming apparatus includes a developing roller including a magnet in which a plurality of magnetic poles are arranged and a rotatable sleeve which conveys a developing agent including toner and carrier to develop a latent image formed on a photoconductor, a motor configured to rotate the sleeve and a rotational direction of a motor control section configured to rotate the motor forward or reversely when an image forming job is completed, to rotate the sleeve in a direction reverse to a rotational direction of the sleeve in the image forming job for a reverse rotation time and then rotate the sleeve in a direction the same as the rotational direction of the sleeve in the image forming job for a forward rotation time shorter than the reverse rotation time.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: September 27, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Kei Onishi
  • Patent number: 9002219
    Abstract: A developing apparatus includes a development unit configured to supply toner to a photoconductor on which an electrostatic image is formed, a supply unit configured to supply toner to the development unit, a sensor configured to detect a concentration of toner in the development unit, and a control unit. The control unit is configured to, when the detected concentration of the toner is lower than a first value, control the supply unit to perform a toner supply process, control the sensor to detect the concentration of the toner after the toner supply process, count the number of times the sensor detects the concentration of the toner to be higher than a second value that is higher than the first value, and control the supply unit to repeat the toner supply process, when the counted number is less than a predetermined number that is equal to or greater than two.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 7, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventor: Kei Onishi
  • Publication number: 20140190617
    Abstract: An objective of the present invention is to reduce the development of defect during vulcanization. A method for producing a pneumatic tire comprises: a carcass ply forming step to cover both surfaces of a code array made of the carcass cords of the carcass ply with a topping rubber; a step of forming a raw cover including the carcass; and a step of vulcanizing the raw cover. The carcass ply forming step comprises an arranging process to intersect rubber-un-coated air-absorptive organic fiber cords with carcass cords of the carcass ply on at least one side of the carcass ply.
    Type: Application
    Filed: August 24, 2012
    Publication date: July 10, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yukishige Adachi, Kei Onishi
  • Publication number: 20140126921
    Abstract: A developing apparatus includes a development unit configured to supply toner to a photoconductor on which an electrostatic image is formed, a supply unit configured to supply toner to the development unit, a sensor configured to detect a concentration of toner in the development unit, and a control unit. The control unit is configured to, when the detected concentration of the toner is lower than a first value, control the supply unit to perform a toner supply process, control the sensor to detect the concentration of the toner after the toner supply process, count the number of times the sensor detects the concentration of the toner to be higher than a second value that is higher than the first value, and control the supply unit to repeat the toner supply process, when the counted number is less than a predetermined number that is equal to or greater than two.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 8, 2014
    Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventor: Kei ONISHI