Matsushita Electric Industrial Co., Ltd.

Syuichi Watanabe

Kenji Asakura

Hideki Tatematsu

Hiroshi Terada

Masaru Imai

Akinori Toyoda

An image heating device having a predetermined amount of heat generation with a small electric current. The device includes a heat-generating roller ( ) having magnetism and conductivity, an exciting coil ( ) opposed to the peripheral face of the heat-generating roller ( ) and adapted for allowing the heat-generating roller ( ) to generate heat with electromagnetic induction. The exciting coil ( ) is composed of a bundle of 60 copper wires of a 0.2 mm diameter are extended in the direction of the rotation axis of the heat-generating roller ( ) and they are circumferentially wound along the circumferential direction of the heat-generating roller ( ). The bundled wires are arranged in close contact with each other in the circumferential direction of the heat-generating roller ( ) so as to cover the upper half of the heat-generating roller ( ).

Image heating device and image forming apparatus using the same

An image heating device having a predetermined amount of heat generation with a small electric current. The device comprises a heat-generating roller ( ) having magnetism and conductivity, an exciting coil ( ) opposed to the peripheral face of the heat-generating roller ( ) and adapted for allowing the heat-generating roller ( ) to generate heat with electromagnetic induction. The exciting coil ( ) is composed of a bundle of 60 copper wires of a 0.2 mm diameter are extended in the direction of the rotation axis of the heat-generating roller ( ) and they are circumferentially wound along the circumferential direction of the heat-generating roller ( ). The bundled wires are arranged in close contact with each other in the circumferential direction of the heat-generating roller ( ) so as to cover the upper half of the heat-generating roller ( ).

An image heating device having a predetermined amount of heat generation with a small electric current. The device has a heat-generating roller having magnetism and conductivity, and an exciting coil opposed to the peripheral face of the heat-generating roller and adapted for allowing the heat-generating roller to generate heat with electromagnetic induction. The exciting coil is composed of a bundle of copper wires extended in the direction of the rotation axis of the heat generating roller. The wires are circumferentially wound along the circumferential direction of the heat-generating roller. The bundled wires are arranged in close contact with each other in the circumferential direction of the heat-generating roller so as to cover the upper half of the heat-generating roller.

Growing community of inventors

Yawata, Japan

Syuichi Watanabe