RESISTANCE HEATING ELEMENT USING POLYIMIDE RESIN AND GRAPHITE

To provide a resistance heating element suitable for a heat source of a fixing belt of an image forming apparatus, and an endless belt having a resistance heating layer.SOLUTION: A resistance heating element contains polyimide resin and graphite particles having an average particle diameter of 3-18...

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Bibliographic Details
Main Author KAWAMOTO KEIJI
Format Patent
LanguageEnglish
Japanese
Published 12.05.2023
Subjects
CINEMATOGRAPHY
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide a resistance heating element suitable for a heat source of a fixing belt of an image forming apparatus, and an endless belt having a resistance heating layer.SOLUTION: A resistance heating element contains polyimide resin and graphite particles having an average particle diameter of 3-18 μm and an average aspect ratio of 1.23 or more, and an endless belt has a resistance heating layer. The average aspect ratio of the graphite particles is 3.0 or less. The average particle diameter of the graphite particles is 5-10 μm. The content of the polyimide resin is 50-90 volume% based on the total volume of the resistance heating element. The content of the graphite particles is 10-50 volume% based on the total volume of the resistance heating element.SELECTED DRAWING: None 【課題】画像形成装置の定着ベルトの熱源として好適な抵抗発熱体および抵抗発熱層を有する無端ベルトを提供する。【解決手段】ポリイミド樹脂と、３～１８μｍの平均粒径及び１．２３以上の平均アスペクト比を有するグラファイト粒子と、を含有する抵抗発熱体および抵抗発熱層を有する無端ベルト。グラファイト粒子の平均アスペクト比が３．０以下、グラファイト粒子の平均粒径が５～１０μｍ、ポリイミド樹脂の含有量が、抵抗発熱体の全体積を基準として５０～９０体積％、グラファイト粒子の含有量が、抵抗発熱体の全体積を基準として１０～５０体積％。【選択図】なし
Bibliography:Application Number: JP20210175331