FIXING DEVICE

PROBLEM TO BE SOLVED: To provide a fixing device that can suppress damage to a cylindrical heating element generating heat due to bending fatigue and suppress an excessive temperature rise of the heating element at a non-nip part.SOLUTION: The electrical resistance per unit length of a fixed cylindr...

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Bibliographic Details
Main Authors HAMAMOTO RYOSUKE, NISHIMURA SHIZUMARO
Format Patent
LanguageEnglish
Japanese
Published 26.01.2017
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:PROBLEM TO BE SOLVED: To provide a fixing device that can suppress damage to a cylindrical heating element generating heat due to bending fatigue and suppress an excessive temperature rise of the heating element at a non-nip part.SOLUTION: The electrical resistance per unit length of a fixed cylindrical heating element 401 at a nip part N is made higher than the electrical resistance per unit length of the heating element at a non-nip part Nn other than the nip part, the nip part formed by a cylindrical rotating body 402 in contact with at least part of an outer peripheral surface of the heating element and an opposing rotating body 408 arranged opposite to the rotating body.SELECTED DRAWING: Figure 1 【課題】発熱する筒状の発熱体の屈曲疲労による破損を抑制でき、更に発熱体の非ニップ部での過剰昇温を抑制できる定着装置を提供すること。【解決手段】固定された筒状の発熱体４０１の外周面とすくなくとも一部が接触する筒状の回転体４０２と前記回転体と対向して配置された対向回転体４０８とで形成されるニップ部Ｎにおける前記発熱体の単位長さあたりの電気抵抗を、前記発熱体の前記ニップ部以外の非ニップ部Ｎｎにおける単位長さあたりの電気抵抗よりも高くする。【選択図】図１
Bibliography:Application Number: JP20150136937