HEATING UNIT

• Main Authors: MARUYAMA YASUHIRO, IKENO YUICHI, MUNEDA MAKOTO
• Format: Patent
• Language: English; Japanese
• Published: 28.07.2022
• Subjects: CINEMATOGRAPHY; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To detect an accurate temperature with a temperature detection member.SOLUTION: A heating unit 1 comprises: a heater 10; a temperature detection member (thermistor 50) that detects the temperature of the heater 10; a belt 3; a holder 20 that supports the heater 10; a sheet-like first heat conduction member 30 that is located between the heater 10 and the holder 20, the first heat conduction member 30 having a first heater side surface 31 directed toward the heater 10, a first opposite surface 32 on the opposite side of the first heater side surface 31, and openings (first openings 35A, 35B); and a sheet-like second heat conduction member 45 that is arranged at a position corresponding to at least the openings when seen from an orthogonal direction orthogonal to the first opposite surface 32, the second heat conduction member 45 having a second heater side surface 45F directed toward the heater 10 and a second opposite surface 45R on the opposite side of the second heater side surface 45F. The temperature detection member is in contact with the second opposite surface 45R of the second heat conduction member 45.SELECTED DRAWING: Figure 1 【課題】温度検知部材で正確な温度を検知する。【解決手段】加熱ユニット１は、ヒータ１０と、ヒータ１０の温度を検知する温度検知部材（サーミスタ５０）と、ベルト３と、ヒータ１０を支持するホルダ２０と、ヒータ１０とホルダ２０の間に位置する、シート状の第１熱伝導部材３０であって、ヒータ１０側を向く第１ヒータ側面３１と、第１ヒータ側面３１とは反対側の第１反対面３２と、開口（第１開口３５Ａ，３５Ｂ）とを有する第１熱伝導部材３０と、第１反対面３２に直交する直交方向から見て、少なくとも開口に対応する位置に配置された、シート状の第２熱伝導部材４５であって、ヒータ１０側を向く第２ヒータ側面４５Ｆと、第２ヒータ側面４５Ｆとは反対側の第２反対面４５Ｒとを有する第２熱伝導部材４５と、を備える。温度検知部材は、第２熱伝導部材４５の第２反対面４５Ｒに接触する。【選択図】図１