The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2014
Filed:
Jan. 18, 2011
Jin-seok Lee, Suwon-si, KR;
Bong-hee Lee, Suwon-si, KR;
Sang-uk Jeon, Yongin-si, KR;
Dong-kyun Kim, Suwon-si, KR;
Jin-seok Lee, Suwon-si, KR;
Bong-hee Lee, Suwon-si, KR;
Sang-uk Jeon, Yongin-si, KR;
Dong-kyun Kim, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An image forming apparatus includes a heat roller heated to a preset temperature; a pressure roller for having conductivity and forming a nip by pressure-contacting with the heat roller; a power supply unit to apply a bias voltage to the pressure roller; and a controller to, when a printing paper enters the nip, control the power supply unit to apply the bias voltage to the pressure roller. When a time interval is longer than a preset time, the controller can control the power supply unit not to apply the bias voltage when the printing paper is not placed in the nip, and when the time interval is shorter than the preset time, the controller can control the power supply unit to apply the bias voltage when the printing paper is not placed in the nip.