Brother Kogyo Kabushiki-kaisha

Takao Nakazawa

Osamu Takagi

Shunichi Higashiyama

Takemi Yamamoto

Shigeyuki Hayashi

Yumio Matsumoto

Kiyoharu Hayakawa

Yuji Asano

Hiroshi Kawahara

Yoshiya Tomatsu

A fixing device includes a heat roller, which is rotatably mounted to a frame, a press roller, which is rotatably mounted to the frame, and a press mechanism for pressing the press roller against the heat roller. The press mechanism has a displacement member that is displaceable in a press direction, a bearing portion that is movable in the opposite direction relative to the displacement member and supports the press roller at a shaft portion thereof, an urging member for urging the bearing portion in the press direction, and displacing structure for displacing the displacement member between a first position corresponding to a non-press position and a second position corresponding to a press position. The urging force of the urging member in the press direction is reinforced by action of the bearing portion, which is displaced in the opposite direction relative to the displacement member when the displacement member is displaced from the first position to the second position.

Press mechanism used with a fixing device for an image forming apparatus

In a pressure developing device employed in an imaging device like a duplicating machine, an optical printer etc., pressure force for evenly pressurizing a recording medium is capable of being varied in accordance with the width of the recording medium to be pressurized.

Pressure developing device

In a pressure developing device employed in an imaging device like a duplicating machine, an optical printer etc, pressure force for pressurizing a recording medium is capable of being varied in accordance with the width of the recording medium to be pressurized. A sensor for detecting the width of the recording medium is provided, and the pressure force is varied based upon the detected value.

Growing community of inventors

Nagoya, Japan

Takao Nakazawa