Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Sung-Hoon Hong

Chang-Hwan Hwang

Beom-Ku Han

Min-Hyouk Lee

Bo-Ra Kim

Yoon-Young Cho

Chang-Soo Lee

Kuk-Hwan Kim

Kyung-shig Chung

Jong-Bo Jung

Young-Soo Kim

Han-Gil Song

Min-Goo Choi

Nam-Mi Kim

Chang-hwan Hwang

Jong-Seong Lee

Jae-Ho Baik

Yang-Jic Lee

Jin-yoon Kim

Electronic device

Mobile terminal

Handheld terminal

A method and apparatus for fuser cooling fan control is provided. An image forming apparatus so configured comprises a fixing unit, a cooling fan for cooling the fixing unit, a detecting sensor for measuring ambient temperature and humidity of the image forming apparatus, and a controller for recognizing ambient temperature and humidity change from the measurement provided by the detecting sensor. The controller controls operation of the cooling fan according to the temperature and humidity change detected. The controller delays operation of the cooling fan by an amount of time if the ambient temperature and/or humidity is below a reference temperature and humidity level.

Fuser cooling fan control method and image forming apparatus having the same

Portable phone

Mobile phone

A bearing structure reduces friction between a roller and a bearing under a pressure. A fusing device for an image forming apparatus employs the bearing structure. The bearing structure installed between a frame and a rotary shaft supports the rotary shaft on the frame. A bearing body has a fitting part in which the rotary shaft is rotatably fitted. A rolling support unit is installed on at least one portion inside the fitting part to contact the rotary shaft in a rolling manner. The fusing device includes a fusing roller in which a heater is embedded, and a pressure roller that faces the fusing roller and cooperates with the fusing roller in pressing a sheet of paper passing therebetween. Bearing structures rotatably support the fusing roller and the pressure roller on a frame. Each bearing structure includes a bearing body having a fitting part, and a rolling support unit installed on at least one area inside the fitting part to contact the fitted roller in a rolling manner.

Bearing structure and fusing device for image forming apparatus employing the bearing structure

A fusing unit and a fusing apparatus using the fusing unit are provided. The fusing unit includes a pipe-shaped fusing roller having a heat generating unit and electrode members at both ends thereof. A power supply unit contacts the electrode members and supplies current thereto. A blocking member is disposed between the electrode members and the power supply units to block current by separating the power supply unit from the electrode members when a temperature of the heat generating unit rapidly increases.

Fusing unit and fusing apparatus using the same

Charger for mobile phone

Growing community of inventors

Suwon-si, South Korea

Sung-Hoon Hong