Patents by Inventor Dyoung-chul Bae

Dyoung-chul Bae 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).

  • Electrophotographic image-forming apparatus and charging voltage control method thereof
    Patent number: 7050732
    Abstract: An electrophotographic image-forming apparatus and a charging voltage control method therefor. The electrophotographic image-forming apparatus has a charging roller applying a predetermined voltage to a photosensitive medium, a developing roller for developing with a developing agent an electrostatic latent image formed on the photosensitive medium by a laser scanning unit, a transfer roller transferring onto a sheet of recording paper the image developed by the developing agent, and a high voltage power supply (HVPS) applying predefined voltages to the respective rollers.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: May 23, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dyoung-chul Bae, Ui-Choon Lee, Su-jong Jeong
  • Electrophotographic image-forming apparatus and charging voltage control method therefor
    Publication number: 20040190921
    Abstract: An electrophotographic image-forming apparatus and a charging voltage control method therefor. The electrophotographic image-forming apparatus has a charging roller applying a predetermined voltage to a photosensitive medium, a developing roller for developing with a developing agent an electrostatic latent image formed on the photosensitive medium by a laser scanning unit, a transfer roller transferring onto a sheet of recording paper the image developed by the developing agent, and a high voltage power supply (HVPS) applying predefined voltages to the respective rollers.
    Type: Application
    Filed: January 5, 2004
    Publication date: September 30, 2004
    Applicant: Samsung Electronics Co.,Ltd.
    Inventors: Dyoung-chul Bae, Ui-Choon Lee, Su-jong Jeong