JP2016212449A5

JP2016212449A5 -

Info

Publication number: JP2016212449A5
Application number: JP2016184725A
Authority: JP
Filing date: 2016-09-21
Publication date: 2017-02-02
Anticipated expiration: 2032-12-28

Description

上記の目的を達成するために、筒状のフィルムと、前記フィルムの内面に接触する板状のヒータと、前記ヒータの前記フィルムの内面と接触する面と反対側の面を支持する支持部材と、前記ヒータと前記支持部材との間に設けられ前記ヒータに接触する高熱伝導部材と、前記ヒータの前記フィルムの母線方向の両端部が前記支持部材に対して前記ヒータの厚み方向に移動しないように前記両端部を規制する規制部材と、前記フィルムを介して前記ヒータと共にニップ部を形成する加圧部材と、を備え、前記ニップ部でトナー画像を担持した記録材を搬送しながら加熱しトナー画像を記録材に定着する定着装置において、前記支持部材の前記高熱伝導部材と対向する面は、前記フィルムの母線方向の中央部は端部よりも前記加圧部材に近づく方向に突出した形状を有することを特徴とする。 To achieve the above object, a cylindrical film, a plate-like heater that contacts the inner surface of the film, and a support member that supports a surface of the heater opposite to the surface that contacts the inner surface of the film, A high thermal conductivity member provided between the heater and the support member and in contact with the heater; and both end portions of the heater in the generatrix direction do not move in the thickness direction of the heater with respect to the support member. And a pressure member that forms a nip portion together with the heater via the film, and heated while conveying a recording material carrying a toner image at the nip portion. the fixing device for fixing an image on a recording material, said high thermal conductivity member which faces the front Symbol support member has a central portion of the generatrix direction of the film is better to approach the pressing member than the end It characterized by having a protruding shape.

Claims

A tubular film,
A plate-like heater in contact with the inner surface of the film;
A support member that supports a surface of the heater opposite to the surface that contacts the inner surface of the film;
A high thermal conductivity member provided between the heater and the support member and in contact with the heater;
A regulating member that regulates the both ends of the heater so that both ends of the film in the bus direction do not move in the thickness direction of the heater with respect to the support member;
A pressure member that forms a nip with the heater through the film;
A fixing device for fixing the toner image to the recording material by heating while conveying the recording material carrying the toner image at the nip portion,
Before SL said high thermal conductivity member facing the surface of the supporting member, the central portion of the generatrix direction of said film fixing apparatus characterized by having a shape projecting in a direction approaching the pressing member than the end portion.

2. The fixing device according to claim 1, wherein a surface of the support member that faces the high heat conductive member is a curved surface that approaches the pressure member as it goes from both ends toward the center in the generatrix direction of the film.

The fixing device according to claim 1, wherein a bending rigidity of the heater is larger than a bending rigidity of the high heat conductive member and smaller than a bending rigidity of the support member.

The fixing device according to claim 1, wherein a heat conductivity of the high heat conductive member is higher than a heat conductivity of a substrate of the heater.

The fixing device according to claim 1, wherein the high heat conductive member is a metal plate or a graphite sheet.