FIXING DEVICE AND IMAGE FORMING APPARATUS

To accelerate a rise in temperature of a fixing belt without requiring a plurality of heaters.SOLUTION: A fixing device comprises: an endless fixing belt; a heat source that heats the fixing belt from the inside; and heat source moving means. The heat source is formed of one heater that has a heatin...

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Bibliographic Details
Main Authors SHIMOKAWA TOSHIHIKO, YOSHIURA ARINOBU, SAITO KAZUYA, MINBU RYUICHI, KUNO SATOSHI, YAMANAKA KENTARO
Format Patent
LanguageEnglish
Japanese
Published 17.09.2020
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To accelerate a rise in temperature of a fixing belt without requiring a plurality of heaters.SOLUTION: A fixing device comprises: an endless fixing belt; a heat source that heats the fixing belt from the inside; and heat source moving means. The heat source is formed of one heater that has a heating part substantially over the entire area in the axial direction of the fixing belt, and the moving means moves the position of the heat source according to the width of a sheet to change at least either one of a heating area or heating efficiency of the fixing belt at the ends of the sheet.SELECTED DRAWING: Figure 2 【課題】複数のヒータを必要とすることなく定着ベルトの昇温を早める。【解決手段】無端状の定着ベルトと、定着ベルトを内部から加熱する加熱源と、加熱源の可動手段と、を備え、加熱源は、定着ベルトの軸方向の略全域に発熱部を有する一のヒータから構成され、可動手段は、用紙の幅に応じて加熱源の位置を移動させることにより、用紙の端部における定着ベルトの加熱領域または加熱効率の少なくともいずれか一方を変化させる。【選択図】図２
Bibliography:Application Number: JP20190046219