Patents by Inventor Kwang-sun SONG

Kwang-sun SONG 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).

  • Image forming apparatus and fuser driving control method
    Patent number: 10018947
    Abstract: An image forming apparatus as provided includes: a heating roller heated using a first heater unit disposed in the center thereof and second heater units disposed on both sides of the first heater unit; a pressure roller in pressing contact with the heating roller to form a nip; first and second sensors for detecting the temperature of a central area of the heating roller the temperature of a side area of the heating roller, respectively; and a controller for individually controlling the first and second heater units according to the respective temperatures measured by the first and second sensors when the temperature measured by the second sensor is lower than a predetermined first temperature, and commonly controlling the first and second heater units according to the temperature measured by the first sensor when the temperature measured by the second sensor is equal to or higher than the predetermined first temperature.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 10, 2018
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Jeong-chul Song, Sang-cheol Moon, Hwan-hee Kim, Kwang-sun Song
  • IMAGE FORMING APPARATUS AND FUSER DRIVING CONTROL METHOD
    Publication number: 20170146937
    Abstract: An image forming apparatus as provided includes: a heating roller heated using a first heater unit disposed in the center thereof and second heater units disposed on both sides of the first heater unit; a pressure roller in pressing contact with the heating roller to form a nip; first and second sensors for detecting the temperature of a central area of the heating roller the temperature of a side area of the heating roller, respectively; and a controller for individually controlling the first and second heater units according to the respective temperatures measured by the first and second sensors when the temperature measured by the second sensor is lower than a predetermined first temperature, and commonly controlling the first and second heater units according to the temperature measured by the first sensor when the temperature measured by the second sensor is equal to or higher than the predetermined first temperature.
    Type: Application
    Filed: December 23, 2014
    Publication date: May 25, 2017
    Applicant: S-Printing Solution Co., Ltd.
    Inventors: Jeong-chul SONG, Sang-cheol MOON, Hwan-hee KIM, Kwang-sun SONG