Patents by Inventor Jong In Hwang

Jong In Hwang 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 method for controlling fuser thereof
    Patent number: 8270862
    Abstract: Disclosed is an image forming apparatus capable of controlling a fuser thereof to operate effectively even with a possible fluctuation in the AC voltage input. The image forming apparatus may include an input for receiving an AC voltage, a detector that outputs a DC voltage corresponding to a level of the AC voltage input, a fuser operable to produce heat according to the AC voltage input, a storage in which fusing temperature control information and a controller that controls the fuser using the fusing temperature control information corresponding to the DC voltage.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: September 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-In Hwang, Soo-Yong Jung
  • Image forming apparatus
    Patent number: 8095023
    Abstract: An image forming apparatus having a heating roller and a pressing roller includes a temperature sensing unit provided to be broken when the heating roller is overheated and a pressure releasing control unit provided to release the pressing roller from the heating roller when the temperature sensing unit is broken, when a microcomputer erroneously operates due to a damage of an A/D port of the microcomputer, such that the pressing roller is forcibly released from the heating roller by the pressure releasing control unit, thereby preventing the heating roller and the pressing roller from being fused to each other.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: January 10, 2012
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventor: Jong In Hwang
  • IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING FUSER THEREOF
    Publication number: 20100178072
    Abstract: Disclosed is an image forming apparatus capable of controlling a fuser thereof to operate effectively even with a possible fluctuation in the AC voltage input. The image forming apparatus may include an input for receiving an AC voltage, a detector that outputs a DC voltage corresponding to a level of the AC voltage input, a fuser operable to produce heat according to the AC voltage input, a storage in which fusing temperature control information and a controller that controls the fuser using the fusing temperature control information corresponding to the DC voltage.
    Type: Application
    Filed: October 26, 2009
    Publication date: July 15, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-In Hwang, Soo Yong Jung
  • IMAGE FORMING APPARATUS
    Publication number: 20080187333
    Abstract: An image forming apparatus having a heating roller and a pressing roller includes a temperature sensing unit provided to be broken when the heating roller is overheated and a pressure releasing control unit provided to release the pressing roller from the heating roller when the temperature sensing unit is broken, when a microcomputer erroneously operates due to a damage of an A/D port of the microcomputer, such that the pressing roller is forcibly released from the heating roller by the pressure releasing control unit, thereby preventing the heating roller and the pressing roller from being fused to each other.
    Type: Application
    Filed: January 29, 2008
    Publication date: August 7, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jong In HWANG