Patents by Inventor In-Sub Yoo

In-Sub 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).

  • Patent number: 7424257
    Abstract: A paper guide device which guides a sheet of paper fed to a nip between an image belt and a transfer roller and an image forming apparatus including the same. The paper guide device includes a first convey guiding unit arranged within a predetermined space from an image belt to firstly guiding the paper to a nip between the image belt and a transfer roller. A second convey guiding unit is arranged on the first convey guiding unit to contact the image belt to secondly guide the paper to the nip without contacting the image belt. The device accurately guides the paper to the nip without contacting the image transfer belt.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: September 9, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Sub Yoo, Yong-su Kim
  • Publication number: 20060115295
    Abstract: Provided are an image forming unit and a color image forming apparatus having the image forming unit. The image forming unit includes an intermediate transfer belt, a plurality of belt roller shafts formed at both ends of each of a plurality of belt rollers allowing the intermediate transfer belt to perform an endless orbiting motion, a plurality of photosensitive drums lined up along a rotational direction of the intermediate transfer belt, a plurality of photosensitive drum shafts formed at both ends of each of the plurality of photosensitive drums, and a developing frame comprising a plurality of holes supporting the plurality of belt roller shafts and the plurality of photosensitive drum shafts.
    Type: Application
    Filed: November 22, 2005
    Publication date: June 1, 2006
    Inventors: Dong-Ju Kang, Yong-Su Kim, In-Sub Yoo
  • Publication number: 20060083559
    Abstract: A paper guide device which guides a sheet of paper fed to a nip between an image belt and a transfer roller and an image forming apparatus including the same. The paper guide device includes a first convey guiding unit arranged within a predetermined space from an image belt to firstly guiding the paper to a nip between the image belt and a transfer roller. A second convey guiding unit is arranged on the first convey guiding unit to contact the image belt to secondly guide the paper to the nip without contacting the image belt. The device accurately guides the paper to the nip without contacting the image transfer belt.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 20, 2006
    Inventors: In-Sub Yoo, Yong-su Kim