Patents by Inventor Gwang Keun PARK

Gwang Keun PARK 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).

  • Tension application device for printer and printer having the same
    Patent number: 10675895
    Abstract: Provided is an unwinding device for unwinding a sheet from a sheet roll, the sheet roll being inserted onto the device. The unwinding device includes a shaft, a first rotating member and a second rotating member which are inserted onto the shaft, configured to be rotatable with rotation of the sheet roll, the sheet roll being inserted onto the first rotating member and the second rotating member, a first elastic member disposed between the first rotating member and the shaft, the first elastic member being configured to provide first back tension to the sheet when the first rotating member rotates, a second elastic member disposed between the second rotating member and the shaft, the second elastic member being configured to provide second back tension to the sheet when the second rotating member rotates, and a back tension controlling member disposed between the second elastic member and the shaft.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 9, 2020
    Assignee: BIXOLON CO., LTD.
    Inventors: Geun Wha Lim, Gwang Keun Park
  • TENSION APPLICATION DEVICE FOR PRINTER AND PRINTER HAVING THE SAME
    Publication number: 20190111713
    Abstract: Provided is an unwinding device for unwinding a sheet from a sheet roll, the sheet roll being inserted onto the device. The unwinding device includes a shaft, a first rotating member and a second rotating member which are inserted onto the shaft, configured to be rotatable with rotation of the sheet roll, the sheet roll being inserted onto the first rotating member and the second rotating member, a first elastic member disposed between the first rotating member and the shaft, the first elastic member being configured to provide first back tension to the sheet when the first rotating member rotates, a second elastic member disposed between the second rotating member and the shaft, the second elastic member being configured to provide second back tension to the sheet when the second rotating member rotates, and a back tension controlling member disposed between the second elastic member and the shaft.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 18, 2019
    Applicant: BIXOLON CO., LTD.
    Inventors: Geun Wha LIM, Gwang Keun PARK
  • Tensioning device for printer, unwinding device for printer, and printer
    Patent number: 10166796
    Abstract: Provided is an unwinding device for unwinding a sheet from a sheet roll, the sheet roll being inserted onto the device. The unwinding device includes a shaft, a first rotating member and a second rotating member which are inserted onto the shaft, configured to be rotatable with rotation of the sheet roll, the sheet roll being inserted onto the first rotating member and the second rotating member, a first elastic member disposed between the first rotating member and the shaft, the first elastic member being configured to provide first back tension to the sheet when the first rotating member rotates, a second elastic member disposed between the second rotating member and the shaft, the second elastic member being configured to provide second back tension to the sheet when the second rotating member rotates, and a back tension controlling member disposed between the second elastic member and the shaft.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: January 1, 2019
    Assignee: BIXOLON CO., LTD.
    Inventors: Geun Wha Lim, Gwang Keun Park
  • TENSIONING DEVICE FOR PRINTER, UNWINDING DEVICE FOR PRINTER, AND PRINTER
    Publication number: 20180339532
    Abstract: Provided is an unwinding device for unwinding a sheet from a sheet roll, the sheet roll being inserted onto the device. The unwinding device includes a shaft, a first rotating member and a second rotating member which are inserted onto the shaft, configured to be rotatable with rotation of the sheet roll, the sheet roll being inserted onto the first rotating member and the second rotating member, a first elastic member disposed between the first rotating member and the shaft, the first elastic member being configured to provide first back tension to the sheet when the first rotating member rotates, a second elastic member disposed between the second rotating member and the shaft, the second elastic member being configured to provide second back tension to the sheet when the second rotating member rotates, and a back tension controlling member disposed between the second elastic member and the shaft.
    Type: Application
    Filed: July 6, 2017
    Publication date: November 29, 2018
    Applicant: BIXOLON CO., LTD.
    Inventors: Geun Wha LIM, Gwang Keun PARK