Patents by Inventor Hyun-gu Woo

Hyun-gu Woo 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).

  • Liquid electrophotographic printing apparatus and method wherein liquid carrier absorption and discharge between rollers and photosensitive medium can reach equilibruim
    Patent number: 6442363
    Abstract: In a printing apparatus including a drying roller for absorbing a liquid carrier remaining on a photosensitive medium, a transfer roller for transferring an image on the photosensitive medium to a recording paper sheet, and a carrier supply unit for supplying liquid carrier to the drying roller, the transfer roller, and the photosensitive medium, a printing operation is carried out such that the carrier is supplied to the drying roller, the transfer roller, and the photosensitive medium to wet them so that carrier absorption and discharge between the transfer roller, the drying roller, and the photosensitive medium can reach equilibrium states.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: August 27, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-joon Chae, Joong-gwang Shin, Dong-hwan Kang, Hyun-gu Woo
  • Liquid electrophotographic printing apparatus and printing method thereof
    Publication number: 20010031156
    Abstract: In a printing apparatus including a drying roller for absorbing a liquid carrier remaining on a photosensitive medium, a transfer roller for transferring an image on the photosensitive medium to a recording paper sheet, and a carrier supply unit for supplying liquid carrier to the drying roller, the transfer roller, and the photosensitive medium, a printing operation is carried out such that the carrier is supplied to the drying roller, the transfer roller, and the photosensitive medium to wet them so that carrier absorption and discharge between the transfer roller, the drying roller, and the photosensitive medium can reach equilibrium states.
    Type: Application
    Filed: February 23, 2001
    Publication date: October 18, 2001
    Inventors: Seong-joon Chae, Joong-gwang Shin, Dong-hwan Kang, Hyun-gu Woo