JP2017072781A5

JP2017072781A5 -

Info

Publication number: JP2017072781A5
Application number: JP2015200966A
Authority: JP
Filing date: 2015-10-09
Publication date: 2019-06-27
Anticipated expiration: 2035-10-09

Description

上記目的を達成するための本発明に係る画像加熱装置の代表的な構成は、細長い基板とこの基板上に長手に沿って形成された通電により発熱する抵抗発熱体を有する加熱部材と、前記加熱部材を保持する保持部材と、少なくとも前記基板の面に沿った方向における熱伝導率が前記基板の熱伝導率よりも高い熱伝導部材であって、前記加熱部材の長手方向に沿って並べられており前記加熱部材と前記保持部材との間に挟まれている第１の熱伝導部材および第２の熱伝導部材と、内周面が前記加熱部材の前記熱伝導部材の側とは反対側の面に接触して摺動しつつ回転可能な無端状のベルトと、前記ベルトを挟んで前記加熱部材に当接して前記ベルトの外面とニップ部を形成する回転体と、を有し、前記ニップ部で画像を担持した記録材を挟持搬送しつつ加熱する画像加熱装置において、前記第１の熱伝導部材と前記第２の熱伝導部材は所定の間隔をあけて配置され、それぞれ前記保持部材に対して長手方向に移動することを規制する規制部を有し、前記規制部は前記画像加熱装置で搬送可能な最小幅サイズの記録材の通過領域の内側に対応する箇所に設けられていることを特徴とする。 A representative configuration of an image heating apparatus according to the present invention for achieving the above object is a heating member having a long and thin substrate and a resistance heating element formed along the longitudinal direction on the substrate and generating heat by electric conduction; And a heat conducting member having a holding member for holding the member and a thermal conductivity at least in a direction along the surface of the substrate that is higher than the thermal conductivity of the substrate, arranged along the longitudinal direction of the heating member A first heat conducting member and a second heat conducting member interposed between the heating member and the holding member, and an inner peripheral surface of the heating member opposite to the heat conducting member side of the heating member The endless belt includes a rotatable endless belt which slides in contact with a surface and slides, and a rotating body which abuts the heating member with the belt interposed therebetween to form a nip portion with the outer surface of the belt, the nip Holds and transports a recording material carrying an image In the image heating apparatus which heats while, the first heat conducting member and the second heat conducting member are disposed at a predetermined interval, and are regulated to restrict movement in the longitudinal direction with respect to the holding member. The control unit is provided at a position corresponding to the inside of the passage area of the recording material of the minimum width size which can be conveyed by the image heating apparatus.

Claims

細長い基板とこの基板上に長手に沿って形成された通電により発熱する抵抗発熱体を有する加熱部材と、
前記加熱部材を保持する保持部材と、
少なくとも前記基板の面に沿った方向における熱伝導率が前記基板の熱伝導率よりも高い熱伝導部材であって、前記加熱部材の長手方向に沿って並べられており前記加熱部材と前記保持部材との間に挟まれている第１の熱伝導部材および第２の熱伝導部材と、
内周面が前記加熱部材の前記熱伝導部材の側とは反対側の面に接触して摺動しつつ回転可能な無端状のベルトと、
前記ベルトを挟んで前記加熱部材に当接して前記ベルトの外面とニップ部を形成する回転体と、を有し、前記ニップ部で画像を担持した記録材を挟持搬送しつつ加熱する画像加熱装置において、
前記第１の熱伝導部材と前記第２の熱伝導部材は所定の間隔をあけて配置され、それぞれ前記保持部材に対して長手方向に移動することを規制する規制部を有し、前記規制部は前記画像加熱装置で搬送可能な最小幅サイズの記録材の通過領域の内側に対応する箇所に設けられていることを特徴とする画像加熱装置。 A long and thin substrate, and a heating member formed on the substrate along the longitudinal direction and having a resistive heating element that generates heat by energization;
A holding member for holding the heating member;
A heat conducting member having a thermal conductivity at least in a direction along the surface of the substrate that is higher than the thermal conductivity of the substrate, arranged along the longitudinal direction of the heating member, and the heating member and the holding member A first heat conducting member and a second heat conducting member sandwiched therebetween;
An endless belt which is rotatable while an inner peripheral surface slides in contact with a surface of the heating member opposite to the heat conductive member side;
An image heating apparatus, comprising: a rotating body that abuts the heating member across the belt to form a nip portion with the outer surface of the belt, and nips and conveys a recording material carrying an image in the nip portion and heats the recording material In
The first heat conducting member and the second heat conducting member are disposed at a predetermined interval, and each have a regulating portion for regulating movement in the longitudinal direction with respect to the holding member, and the regulating portion The image heating apparatus is provided at a position corresponding to the inside of the passage area of the recording material of the minimum width size which can be conveyed by the image heating apparatus.

前記第１の熱伝導部材には商用電源に直接接続される１次回路部材が近接されており、前記第２の熱伝導部材には２次回路部材が近接されていることを特徴とする請求項１に記載の画像加熱装置。 A primary circuit member directly connected to a commercial power source is in close proximity to the first heat conduction member, and a secondary circuit member is in proximity to the second heat conduction member. The image heating apparatus of claim 1.

前記１次回路部材は前記加熱部材の異常昇温により作動して１次回路の通電を遮断する保護素子であることを特徴とする請求項２に記載の画像加熱装置。 The image heating apparatus according to claim 2, wherein the primary circuit member is a protective element that operates by abnormal temperature rise of the heating member to shut off the energization of the primary circuit .

前記２次回路部材は前記加熱部材の温度を検知する温度検知素子であることを特徴とする請求項２又は３に記載の画像加熱装置。 The image heating apparatus according to claim 2, wherein the secondary circuit member is a temperature detection element that detects a temperature of the heating member.

前記加熱部材はセラミックヒータであることを特徴とする請求項１乃至４の何れか１項に記載の画像加熱装置。 The image heating apparatus according to any one of claims 1 to 4, wherein the heating member is a ceramic heater.

前記第１の熱伝導部材と前記第２の熱伝導部材はアルミニウムであることを特徴とする
請求項１乃至５の何れか１項に記載の画像加熱装置。 The image heating apparatus according to any one of claims 1 to 5, wherein the first heat conducting member and the second heat conducting member are aluminum.

前記規制部は、前記第１の熱伝導部材と前記第２の熱伝導部材のそれぞれの長手方向の端部にあることを特徴とする請求項１乃至６の何れか１項に記載の画像加熱装置。 The image heating apparatus according to any one of claims 1 to 6, wherein the restriction portion is provided at each of longitudinal ends of the first heat conduction member and the second heat conduction member. apparatus.

前記規制部は、前記第１の熱伝導部材と前記第２の熱伝導部材のそれぞれに対して１つ配置されていることを特徴とする請求項１乃至７の何れか１項に記載の画像加熱装置。 The image according to any one of claims 1 to 7, wherein one restriction portion is disposed for each of the first heat conduction member and the second heat conduction member. Heating device.

前記第１の熱伝導部材と前記第２の熱伝導部材に潤滑グリスが塗布されていることを特徴とする請求項１乃至８の何れか１項に記載の画像加熱装置。 The image heating apparatus according to any one of claims 1 to 8, wherein lubricating grease is applied to the first heat transfer member and the second heat transfer member.

前記保持部材は、前記第１の熱伝導部材と前記第２の熱伝導部材との接触面に凹み部を設けることで前記第１の熱伝導部材と前記第２の熱伝導部材との接触面積を減らすことを特徴とする請求項１乃至９の何れか１項に記載の画像加熱装置。 The holding member is provided with a recess on the contact surface between the first heat transfer member and the second heat transfer member, thereby providing a contact area between the first heat transfer member and the second heat transfer member. The image heating apparatus according to any one of claims 1 to 9 , characterized in that

前記規制部は前記保持部材に設けられた規制溝に嵌合されることを特徴とする請求項１乃至１０の何れか１項に記載の画像加熱装置。 The image heating apparatus according to any one of claims 1 to 10, wherein the restricting portion is fitted in a restricting groove provided in the holding member.

前記規制部は、前記第１の熱伝導部材と前記第２の熱伝導部材のそれぞれの前記保持部材に対する接着材による接着部であることを特徴とする請求項１乃至１０の何れか１項に記載の画像加熱装置。 The said control part is an adhesion part by the adhesive material with respect to the said holding member of each of a said 1st heat conductive member and a said 2nd heat conductive member, The 1st to 10 characterized by the above-mentioned Image heating device as described.

請求項１乃至１２の何れか１項に記載の画像加熱装置を有することを特徴とする画像形成装置。 An image forming apparatus comprising the image heating apparatus according to any one of claims 1 to 12.