Patents by Inventor Ji-Su Park

Ji-Su Park 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).

  • Publication number: 20180284668
    Abstract: A fusing apparatus and an image forming apparatus includes: a fusing belt; a pressing roller pressed to the fusing belt to form a nib part and rotating the fusing belt; a bushing guiding an edge of the fusing belt; and a ring member rotatably coupled to the bushing and in contact with the edge of the fusing belt that rotates to rotate together with the fusing belt, wherein a first frictional force generated between the edge of the fusing belt and the ring member is larger than a second frictional force generated between the bushing and the ring member.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 4, 2018
    Applicant: S-Printing Solution Co., Ltd.
    Inventors: Sun-hyung LEE, Sung-woo KANG, Ji-su PARK, Sea-chul BAE, Gil-jae YOU, Seung-jun LEE, Young-hoon HAN
  • Publication number: 20180203387
    Abstract: A fixing device comprising a fixing belt, a rotating member arranged to be in engagement with an outer circumferential surface of the fixing belt, a nip forming member to press the fixing belt, to form a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and to rotate together with the fixing belt.
    Type: Application
    Filed: March 12, 2018
    Publication date: July 19, 2018
    Applicant: S-PRINTING SOLUTION CO., LTD
    Inventors: Ji Su PARK, Soo Hwan BAE, Dong Woo LEE, Dong Jin SEOL, Jun Tae KIM
  • Patent number: 9952540
    Abstract: A fixing device including fixing belt, a heat source to heat the fixing belt, a rotating member in engagement with an outer circumferential surface of the fixing belt, a nip forming member to pressurize the fixing belt, thereby forming a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and rotated together with the fixing belt. A rotation center of each of the sliding members is on an upstream side compared to a rotation center of the rotating member along a feeding direction of a printing medium, and a shortest distance between a tangential line of an outer circumferential surface of each of the sliding members and the rotation center of the rotating member is equal to or greater than a shortest distance between the fixing nip and the rotation center of the rotating member.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: April 24, 2018
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Ji Su Park, Soo Hwan Bae, Dong Woo Lee, Dong Jin Seol, Jun Tae Kim
  • Publication number: 20160320729
    Abstract: A fixing device including fixing belt, a heat source to heat the fixing belt, a rotating member in engagement with an outer circumferential surface of the fixing belt, a nip forming member to pressurize the fixing belt, thereby forming a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and rotated together with the fixing belt. A rotation center of each of the sliding members is on an upstream side compared to a rotation center of the rotating member along a feeding direction of a printing medium, and a shortest distance between a tangential line of an outer circumferential surface of each of the sliding members and the rotation center of the rotating member is equal to or greater than a shortest distance between the fixing nip and the rotation center of the rotating member.
    Type: Application
    Filed: July 9, 2014
    Publication date: November 3, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji Su PARK, Soo Hwan BAE, Dong Woo LEE, Dong Jin SEOL, Jun Tae KIM
  • Patent number: 9360811
    Abstract: An image fixing device includes a heat source configured to generate heat, a fixing belt heated by the heat source and disposed to be rotatable, a rotational member disposed to be opposite to the fixing belt and to press a printing medium to the fixing belt, and a supporting member to support an inner circumferential surface of the fixing belt so as to form a fixing nip between the fixing belt and the rotational member and having a plurality of heat insulation grooves formed in a surface thereof so as to reduce thermal conductivity of the supporting member. By the configuration of the present general inventive concept, it is possible to prevent or minimize a heat loss of the fixing belt and thus to enhance image forming efficiency.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: June 7, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Hwan Bae, Dong Woo Lee, Ji Su Park
  • Publication number: 20150030362
    Abstract: An image fixing device includes a heat source configured to generate heat, a fixing belt heated by the heat source and disposed to be rotatable, a rotational member disposed to be opposite to the fixing belt and to press a printing medium to the fixing belt, and a supporting member to support an inner circumferential surface of the fixing belt so as to form a fixing nip between the fixing belt and the rotational member and having a plurality of heat insulation grooves formed in a surface thereof so as to reduce thermal conductivity of the supporting member. By the configuration of the present general inventive concept, it is possible to prevent or minimize a heat loss of the fixing belt and thus to enhance image forming efficiency.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 29, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Soo Hwan BAE, Dong Woo LEE, Ji Su PARK
  • Publication number: 20130250738
    Abstract: A clock includes a display including a plurality of planar portions and a plurality of bending portions disposed between the plane portions. The display is configured to display at least one of time, day, or day of the week. The clock also includes a bottom support for supporting one end of the display.
    Type: Application
    Filed: August 31, 2012
    Publication date: September 26, 2013
    Inventors: Sang-Min Kim, Jee-Yeon Lee, Ji-Su Park
  • Patent number: D674293
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jee-Yeon Lee, Ji-Su Park