ELECTROTHERMAL HEATING DEVICE WITH ENDLESS BELT

To provide an endless belt that does not cause decrease in strength due to repeated fixing operation (heat shock) and does not cause a conductive path to gradually break and to increase resistance; and an electrothermal heating device employing the same.SOLUTION: An electrothermal heating device for...

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Bibliographic Details
Main Author ONO MANABU
Format Patent
LanguageEnglish
Japanese
Published 24.06.2021
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide an endless belt that does not cause decrease in strength due to repeated fixing operation (heat shock) and does not cause a conductive path to gradually break and to increase resistance; and an electrothermal heating device employing the same.SOLUTION: An electrothermal heating device for heating a medium includes: an endless belt that rotates to generate heat when supplied with power; and first and second electrodes that are in contact with a base portion of the endless belt, extend in the axial direction of the endless belt, and are sequentially spaced in the rotational direction of the endless belt. The base portion of the endless belt contains a nanocomposite material with a carbon filler dispersed therein. A volume resistivity of the base portion of the endless belt in the rotational direction is less than a volume resistivity of the base portion of the endless belt in the axial direction.SELECTED DRAWING: Figure 8 【課題】定着動作の繰り返し（ヒートショック）による強度低下を引き起こさず、かつ導電経路が徐々に切断されて高抵抗化を引き起こすことのない無端ベルト、及びそれを用いた電熱加熱装置を提供する。【解決手段】媒体を加熱する電熱加熱装置であって、回転しながら通電によって発熱する無端ベルトと、無端ベルトの基体に接触して無端ベルトの軸線方向に延びると共に、無端ベルトの回転方向に順次に離間して配置された第一電極部及び第二電極部とを備え、無端ベルトの基体は、カーボンフィラーが分散されたナノコンポジット材料を含んでおり、無端ベルトの基体の回転方向の体積抵抗率が、無端ベルトの基体の軸線方向の体積抵抗率よりも小さい。【選択図】図８
Bibliography:Application Number: JP20190225630