Patents by Inventor Jae Beom YOO

Jae Beom YOO 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 concentration control using toner concentration sensor
    Patent number: 11092911
    Abstract: An image forming apparatus includes a developing device to contain a developer, the developer including a toner; a developer cartridge to supply the developer to the developing device; a toner concentration sensor to sense a toner concentration of the toner included in the developer contained in the developing device; and a controller. The controller controls, during a non-printing operation a sensor control voltage to adjust an output level of the toner concentration sensor, to control an output of the toner concentration sensor to satisfy a controlling condition, and detects an shape of the output of the toner concentration sensor after the controller controls the sensor control voltage to adjust the output level.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: August 17, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Jae Beom Yoo
  • TONER CONCENTRATION CONTROL USING TONER CONCENTRATION SENSOR
    Publication number: 20200371450
    Abstract: An image forming apparatus includes a developing device to contain a developer, the developer including a toner; a developer cartridge to supply the developer to the developing device; a toner concentration sensor to sense a toner concentration of the toner included in the developer contained in the developing device; and a controller. The controller controls, during a non-printing operation a sensor control voltage to adjust an output level of the toner concentration sensor, to control an output of the toner concentration sensor to satisfy a controlling condition, and detects an shape of the output of the toner concentration sensor after the controller controls the sensor control voltage to adjust the output level.
    Type: Application
    Filed: August 9, 2018
    Publication date: November 26, 2020
    Inventor: Jae Beom YOO