Patents by Inventor Jeonghuyn Lee

Jeonghuyn Lee 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).

  • Toner supply duct pivotable to allow rotation of development cartridge
    Patent number: 11624988
    Abstract: An example image forming apparatus includes a toner cartridge, a photoconductive cartridge including a photosensitive drum, a development cartridge including a toner inlet portion and rotatable between a first position at which a developing roller is close to the photosensitive drum and a second position at which the developing roller is apart from the photosensitive drum, with respect to a hinge axis that is parallel to an axial direction of the developing roller and between the developing roller and the toner inlet portion, a buffer unit including a toner discharge portion to receive toner from the toner cartridge and to supply the toner to the development cartridge, and a toner supply duct connecting the toner discharge portion to the toner inlet portion, the toner supply duct being rotatably connected to the toner discharge portion in a direction allowing rotation of the development cartridge between the first and the second position.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: April 11, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Janghyun Son, Jongin Kim, Jeonghuyn Lee
  • Toner Supply Dduct Pivotable To Allow Rotation Of Development Cartridge
    Publication number: 20220214632
    Abstract: An example image forming apparatus includes a toner cartridge, a photoconductive cartridge including a photosensitive drum, a development cartridge including a toner inlet portion and rotatable between a first position at which a developing roller is close to the photosensitive drum and a second position at which the developing roller is apart from the photosensitive drum, with respect to a hinge axis that is parallel to an axial direction of the developing roller and between the developing roller and the toner inlet portion, a buffer unit including a toner discharge portion to receive toner from the toner cartridge and to supply the toner to the development cartridge, and a toner supply duct connecting the toner discharge portion to the toner inlet portion, the toner supply duct being rotatably connected to the toner discharge portion in a direction allowing rotation of the development cartridge between the first and the second position.
    Type: Application
    Filed: January 27, 2020
    Publication date: July 7, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Janghyun Son, Jongin Kim, Jeonghuyn Lee