FIXING DEVICE AND IMAGE FORMING DEVICE
To suppress base oil of a lubricant from flowing out to the outside of a region to be lubricated and maintain the performance of a fixing device over a long period.SOLUTION: Provided is a fixing device comprising a rotatable endless film, a heater which is slid on the inner surface of the film via a...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To suppress base oil of a lubricant from flowing out to the outside of a region to be lubricated and maintain the performance of a fixing device over a long period.SOLUTION: Provided is a fixing device comprising a rotatable endless film, a heater which is slid on the inner surface of the film via a lubricant, a heater holder for holding the heater, and a pressure member which is contacted under pressure with the heater via the film so as to form a nip part between the heater and itself. The lubricant contains base oil and thickener, and the heater holder has a fitting groove to which the heater is fitted, with an oil repellent part that shows oil repellency to the base oil being provided in a longitudinal range of the nip part in which the heater is slid on the inner surface of the film.SELECTED DRAWING: Figure 3
【課題】潤滑剤の基油が潤滑対象領域の外部に流出することを抑制し、長期間に亘って定着装置の性能を維持する。【解決手段】回転可能な無端状のフィルムと、潤滑剤を介して前記フィルムの内面に摺動されるヒータと、前記ヒータを保持するヒータホルダと、前記フィルムを介して前記ヒータと圧接され、前記ヒータとの間にニップ部を形成する加圧部材と、を有する定着装置において、前記潤滑剤は、基油及び増稠剤を含み、前記ヒータホルダは、前記ヒータが嵌合された嵌合溝を有し、前記嵌合溝には、前記ニップ部の長手方向に関して前記ヒータが前記フィルムの前記内面に摺動される範囲内に、前記基油に対して撥油性を示す撥油部が設けられている。【選択図】図3 |
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