FIXING DEVICE AND IMAGE FORMING APPARATUS

To provide a fixing device and an image forming apparatus that can make uniform the temperature distribution of planar heat generation means along the direction of movement of a belt compared with a case where a plurality of heat generation units provided along the direction of movement of the belt...

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Main Authors NAKAO MOTOHARU, MORI KEITARO, ITO KAZUYOSHI, MORISAKI SO, INOUE TORU, KOYANAGI KIYOSHI, MIYATA TOSHIYUKI, HARA TOKO
Format Patent
LanguageEnglish
Japanese
Published 07.12.2022
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide a fixing device and an image forming apparatus that can make uniform the temperature distribution of planar heat generation means along the direction of movement of a belt compared with a case where a plurality of heat generation units provided along the direction of movement of the belt have an equal calorific value.SOLUTION: A fixing device comprises: a heating belt that is configured to be movable including rotation; and a ceramic heater 45 as planar heat generation means that is arranged inside the heating belt, and has a plurality of heat generation units 4521, 4522 provided along the direction of movement of the heating belt, wherein the upstream side heat generation unit 4521 along the direction of movement of the heating belt has a larger calorific value than that of the downstream side heat generation unit 4522.SELECTED DRAWING: Figure 6 【課題】ベルトの移動方向に沿って設けられる複数の発熱部の発熱量が等しい場合に比べて、面状発熱手段のベルトの移動方向に沿った温度分布を均一化できる定着装置及び画像形成装置を提供する。【解決手段】回転等の移動が可能に構成された加熱ベルトと、加熱ベルトの内部に配置され、加熱ベルトの移動方向に沿って設けられた複数の発熱部４５２1，４５２2のうち、加熱ベルトの移動方向に沿った上流側の発熱部４５２1が下流側の発熱部４５２2より発熱量が大きい面状発熱手段としてのセラミックヒーラ４５と、を備える。【選択図】図６
Bibliography:Application Number: JP20210087854