JP2009063814A5 - - Google Patents

Claims (5)

通電により発熱するヒータと、前記ヒータに通電する給電部材と、前記ヒータにより加熱される加熱部材であって、記録材が担持する像を加熱する加熱部材と、を有する像加熱装置において、
前記ヒータは、細長い基板であって、通電により基板全体が発熱する基板を有しており、前記給電部材は前記基板の長手方向両端部において前記基板の面と接触していることを特徴とする像加熱装置。 In an image heating apparatus comprising: a heater that generates heat by energization; a power supply member that energizes the heater; and a heating member that is heated by the heater and that heats an image carried by a recording material.
The heater is an elongated substrate, and has a substrate that generates heat when energized, and the power feeding member is in contact with the surface of the substrate at both longitudinal ends of the substrate. Image heating device. 前記給電部材は前記基板の長手方向両端部において前記基板の長手方向端面と接触しており、前記基板の長手方向の寸法は、前記基板の長手方向と対応する前記記録材の幅方向の最大幅と同じであることを特徴とする請求項１に記載の像加熱装置。   The feeding member is in contact with the longitudinal end face of the substrate at both longitudinal ends of the substrate, and the longitudinal dimension of the substrate is the maximum width in the width direction of the recording material corresponding to the longitudinal direction of the substrate. The image heating apparatus according to claim 1, wherein the image heating apparatus is the same. 通電により発熱するヒータと、前記ヒータに通電する給電部材と、前記ヒータと接触しつつ移動する加熱部材と、前記加熱部材を挟んで前記ヒータとニップ部を形成する加圧部材と、を有し、前記ニップ部で像を担持する記録材を挟持搬送しつつ像を加熱する像加熱装置において、
前記ヒータは、記録材の搬送方向と直交する方向に細長い基板であって、通電により基板全体が発熱する基板を有しており、前記給電部材は前記基板の長手方向両端部において前記基板の面と接触していることを特徴とする像加熱装置。 A heater that generates heat when energized, a power supply member that energizes the heater, a heating member that moves while contacting the heater, and a pressure member that forms a nip portion with the heater across the heating member. In the image heating apparatus that heats the image while nipping and conveying the recording material that carries the image at the nip portion,
The heater has a substrate that is elongated in a direction perpendicular to the conveyance direction of the recording material, and the entire substrate generates heat when energized, and the power supply member has a surface of the substrate at both longitudinal ends of the substrate. An image heating apparatus that is in contact with the image heating apparatus. 前記給電部材は前記基板の長手方向両端部において前記基板の長手方向端面と接触しており、前記基板の長手方向の寸法は、前記基板の長手方向と対応する前記記録材の幅方向の最大幅と同じであることを特徴とする請求項３に記載の像加熱装置。 The feeding member is in contact with the longitudinal end surface of the substrate at both longitudinal ends of the substrate, and the longitudinal dimension of the substrate is the maximum width in the width direction of the recording material corresponding to the longitudinal direction of the substrate. The image heating apparatus according to claim 3 , wherein the image heating apparatus is the same. 前記ヒータの基板は、基板最大到達温度以下において、前記基板の温度の上昇に伴って抵抗が下がる特性を有することを特徴とする請求項１から請求項４のいずれかに記載の像加熱装置。   5. The image heating apparatus according to claim 1, wherein the substrate of the heater has a characteristic that the resistance decreases as the temperature of the substrate rises below the maximum substrate temperature. 6.