JPH0582243A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JPH0582243A JPH0582243A JP26708091A JP26708091A JPH0582243A JP H0582243 A JPH0582243 A JP H0582243A JP 26708091 A JP26708091 A JP 26708091A JP 26708091 A JP26708091 A JP 26708091A JP H0582243 A JPH0582243 A JP H0582243A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- heat
- heater
- film
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱性フィルムの一面
側に加熱体を、他面側に被加熱材を密着させ、前記耐熱
性フィルムを介して加熱体の熱エネルギーを被加熱材に
付与する方式（フィルム加熱方式）の加熱装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant film having a heating body adhered to one side thereof and a heat-resistant material to the other side thereof, and the heat energy of the heating body is applied to the heat-resistant material through the heat-resistant film. The present invention relates to a heating device of a giving method (film heating method).
【０００２】この装置は、電子写真複写機・プリンタ・
ファックス等の画像形成装置における画像加熱定着装
置、即ち電子写真・静電記録・磁気記録等の適宜の画像
形成プロセス手段により加熱溶融性の樹脂等により成る
トナーを用いて記録材（エレクトロファックスシート・
静電記録シート・転写材シート・印刷紙など）の面に直
接方式もしくは間接（転写）方式で形成した、目的の画
像情報に対応した未定着のトナー画像を該画像を担持し
ている記録材面に永久固着画像として加熱定着処理する
装置として活用できる。This device is an electrophotographic copying machine, printer,
An image heating and fixing device in an image forming apparatus such as a fax, that is, a recording material (electrofax sheet, toner, etc.) made of a heat-meltable resin by an appropriate image forming process means such as electrophotography, electrostatic recording and magnetic recording.
A recording material carrying an unfixed toner image corresponding to the target image information formed on the surface of an electrostatic recording sheet, transfer material sheet, printing paper, etc. by a direct method or an indirect (transfer) method. It can be used as a device for heat fixing processing as a permanently fixed image on the surface.
【０００３】また、例えば、画像を担持した記録材を加
熱して表面性（艶など）を改質する装置、仮定着処置す
る装置等、広く被加熱材を加熱処理する手段・装置とし
て使用できる。Further, for example, it can be widely used as a means for heating a material to be heated, such as an apparatus for heating a recording material carrying an image to modify the surface property (gloss, etc.), an apparatus for presumptive treatment, and the like. ..
【０００４】[0004]
【従来の技術】従来、例えば画像の加熱定着等のための
記録材の加熱装置としては、所定の温度に維持された加
熱ローラと、弾性層を有して前記加熱ローラに圧接する
加圧ローラによって記録材を挟持搬送しつつ加熱する熱
ローラ方式が多用されている。またフラッシュ加熱方
式、オーブン加熱方式、熱板加熱方式など種々の方式・
構成のものが知られており、また実用されている。2. Description of the Related Art Conventionally, as a heating device of a recording material for heating and fixing an image, for example, a heating roller maintained at a predetermined temperature and a pressure roller having an elastic layer and being in pressure contact with the heating roller. A heat roller method is widely used in which a recording material is nipped and conveyed while being heated. Various methods such as flash heating method, oven heating method, hot plate heating method, etc.
The configuration is known and is in practical use.
【０００５】また、米国特許第３，５７８，７９７号明
細書に開示のように、ベルト加熱方式のものも知られて
いる。これは、．トナー像を加熱体ウェブに接触させ
てその融点へ加熱して融解し、．融解後、そのトナー
を冷却して比較的高い粘性とし、．トナーの加熱体ウ
ェブへ付着する傾向を弱めた状態で加熱体ウェブから剥
がすという過程で、オフセットを生じさせずに定着処理
する方式である。A belt heating type is also known, as disclosed in US Pat. No. 3,578,797. this is,. The toner image is contacted with the heating element web and heated to its melting point to melt, After melting, the toner is cooled to a relatively high viscosity ,. In the process of peeling the toner from the heating body web while weakening the tendency of the toner to adhere to the heating body web, a fixing process is performed without causing offset.
【０００６】最近では、金属や樹脂製のホルダに固定支
持された加熱体（サーマルヒータ、以下ヒータと記す）
と、該ヒータに対向圧接しつつ搬送される耐熱性フィル
ム（定着フィルム）と、該フィルムを介して記録材をヒ
ータに密着させる加圧部材を有し、ヒータの熱をフィル
ムを介して記録材へ付与することで記録材面に形成担持
されている未定着画像を記録材面に加熱定着させる方式
・構成の定着装置（フィルム加熱方式）が考案されてい
る。Recently, a heating element fixedly supported by a metal or resin holder (thermal heater, hereinafter referred to as heater)
A heat-resistant film (fixing film) that is conveyed while being pressed against the heater, and a pressure member that brings the recording material into close contact with the heater via the film, and the heat of the heater is applied via the film to the recording material. A fixing device (film heating method) has been devised, which has a system and configuration in which an unfixed image formed and carried on the surface of the recording material is heated and fixed on the surface of the recording material by applying it to the recording material surface.
【０００７】本出願人の先の提案に係る例えば特開昭６
３−３１３１８２号公報に開示の方式・装置等がこれに
属し、薄肉の無端或は有端の耐熱性フィルム（シート）
と、該フィルムの移動駆動手段と、該フィルムを中にし
てその一方面側に固定支持して配されたヒータと、他方
面側に該ヒータに対向して配置され該ヒータに対して該
フィルムを介して画像定着するべき記録材の顕画像担持
面を密着させる加圧部材を有し、該フィルムは少なくと
も画像定着時は該フィルムと加圧部材との間に搬送導入
される画像定着すべき記録材と順方向に同一速度で走行
移動させて該走行移動フィルムを挟んでヒータと加圧部
材との圧接で形成される定着部としての定着ニップ部を
通過させることにより該記録材の顕画像担持面を該フィ
ルムを介して該ヒータで加熱して顕画像（未定着トナー
像）に熱エネルギーを付与して軟化・溶融せしめ、次い
で定着部通過後のフィルムと記録材を分離点で離間させ
ることを基本とする加熱手段・装置である。According to the applicant's earlier proposal, for example, Japanese Patent Laid-Open No.
The method and apparatus disclosed in Japanese Patent Laid-Open No. 3-313182 belong to this, and a thin endless or endless heat resistant film (sheet).
A moving drive means for the film, a heater fixedly supported on one side of the film with the film in the middle, and a heater disposed on the other side of the film so as to face the heater. The film has a pressure member for closely contacting the developed image bearing surface of the recording material to be image-fixed, and the film is conveyed and introduced between the film and the pressure member at least during image fixing. A visible image of the recording material by running and moving in the forward direction at the same speed as the recording material and passing through a fixing nip portion as a fixing portion formed by press contact between a heater and a pressing member with the traveling moving film interposed therebetween. The supporting surface is heated by the heater through the film to apply thermal energy to the developed image (unfixed toner image) to soften / melt it, and then the film and recording material after passing through the fixing portion are separated at the separation point. Based on A heating means and equipment.
【０００８】このようなフィルム加熱方式においては、
ヒータとして低熱容量加熱体を用いることができる。こ
のため、従来の接触加熱方式である熱ローラ方式、ベル
ト加熱方式などに比べ省電力化及びウェイトタイム短縮
化（クイックスタート）が可能となる。その他、従来の
加熱方式の欠点を解決できる利点を有し、効果的なもの
である。In such a film heating system,
A low heat capacity heating element can be used as the heater. Therefore, it is possible to save power and shorten the wait time (quick start) as compared with the conventional contact heating method such as a heat roller method and a belt heating method. In addition, it has an advantage that the drawbacks of the conventional heating method can be solved, and is effective.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記の
ようなフィルム加熱方式の加熱装置において、従来は、
ヒータを樹脂とセラミックス・金属・ガラス等の複合材
料によって構成されるヒータ支持体に密着させて固定支
持させている。ヒータ支持体はそれ自体断熱性のものを
用いるが、それでもこのヒータ支持体へヒータの熱がか
なり奪われ、このヒータ支持体から加熱装置本体や該加
熱装置を組込んだ画像形成装置等の本機内の空気に熱が
放散されていくことで、熱効率が下り、フィルム加熱方
式の大きな利点である、低熱容量ヒータを用いて、省電
力化、ウェイトタイムの短縮化等が図れるメリットを低
下させる１つの因子となっており、また機内昇温も大き
くする原因なっている。However, in the film heating type heating apparatus as described above, the conventional method is as follows.
The heater is in close contact with and fixedly supported by a heater support made of a composite material of resin and ceramics, metal, glass or the like. Although the heater support is itself heat-insulating, the heat of the heater is still considerably absorbed by the heater support, and the heater support body or a book of an image forming apparatus or the like incorporating the heating device is used. Dissipating heat to the air inside the machine lowers the thermal efficiency, which is a major advantage of the film heating method. Using a low heat capacity heater, the power saving and the shortening of the wait time are reduced. 1 This is one of the factors and also causes the increase in the temperature inside the machine.
【００１０】本発明は上記のような問題点を解消するこ
とを目的とするものである。An object of the present invention is to solve the above problems.
【００１１】[0011]
【課題を解決するための手段】本発明は、耐熱性フィル
ムの一面側に加熱体を、他面側に被加熱材を密着させ、
前記耐熱性フィルムを介して加熱体の熱エネルギーを被
加熱材に付与する加熱装置において、加熱体と該加熱体
を固定支持する部材との間に空隙を設けたことを特徴と
する加熱装置、である。According to the present invention, a heating body is adhered to one surface side of a heat resistant film and a material to be heated is adhered to the other surface side thereof,
A heating device for applying heat energy of a heating body to a material to be heated through the heat resistant film, wherein a heating device is provided with a gap between the heating body and a member for fixing and supporting the heating body, Is.
【００１２】[0012]
【作用】即ち、加熱体と該加熱体を固定支持する部材と
の間に空隙を設けることで、その空隙が空気断熱部とな
り加熱体から支持部材への熱伝導が押えられ、これと支
持部材自体の断熱性とが相まって、加熱体から支持部材
への奪熱、更には該支持体から他部への熱伝導・放散が
低減されて、熱効率の低下が押えられる。これにより該
加熱装置の省電力性、クイックスタート性等の特性を向
上させることができる。That is, by providing a gap between the heating body and a member for fixing and supporting the heating body, the gap serves as an air heat insulating portion, and heat conduction from the heating body to the supporting member is suppressed. Combined with the heat insulating property of itself, heat absorption from the heating body to the support member and further heat conduction / dissipation from the support body to other parts are reduced, and the reduction in thermal efficiency is suppressed. As a result, it is possible to improve the characteristics of the heating device such as power saving and quick start.
【００１３】[0013]
＜第１実施例＞（図１〜図３） 本実施例は不図示の画像形成装置における画像加熱定着
装置としての加熱装置である。図１において２４はエン
ドレスベルト状の定着フィルムであり、左側の駆動ロー
ラ２５と、右側の従動ローラ２６と、該駆動ローラ２５
と従動ローラ２６の下方に配置した加熱体としての低熱
容量線状加熱体２０、の互いに平行な該３部材２０・２
５・２６に懸回張設してある。<First Embodiment> (FIGS. 1 to 3) This embodiment is a heating device as an image heating and fixing device in an image forming apparatus (not shown). In FIG. 1, reference numeral 24 denotes an endless belt-shaped fixing film, which includes a left driving roller 25, a right driven roller 26, and the driving roller 25.
And the low-heat-capacity linear heating element 20 as a heating element disposed below the driven roller 26, which are parallel to each other.
Suspended on May 26th.
【００１４】従動ローラ２６はエンドレスベルト状の定
着フィルム２４のテンションローラを兼ねさせており、
該定着フィルム２４は駆動ローラ２５の時計方向回転駆
動に伴い時計方向に所定の周速度、即ち不図示の画像形
成部（Ａ）側から搬送されてくる未定着トナー画像Ｔａ
を上面に担持した転写材シート（記録材）Ｐの搬送速度
と同じ周速度を持ってシワや蛇行、速度遅れなく回転駆
動される。The driven roller 26 also functions as a tension roller for the endless belt-shaped fixing film 24.
The fixing film 24 has a predetermined peripheral speed in the clockwise direction as the driving roller 25 is driven to rotate in the clockwise direction, that is, the unfixed toner image Ta conveyed from the image forming unit (A) side (not shown).
The transfer material sheet (recording material) P having the upper surface thereof is rotatably driven at the same peripheral speed as the conveying speed of the transfer material sheet (recording material) P without wrinkling, meandering, or speed delay.
【００１５】２８は加圧部材としての、シリコンゴム等
の離型性の良いゴム弾性層を有する加圧ローラであり、
前記のエンドレスベスト状定着フィルム２４の下行側フ
ィルム部分を挟ませて前記低熱容量線状加熱体２０の下
面に対して不図示の付勢手段により例えば総圧４〜１２
ｋｇの圧接力を持って対向圧接させてあり、転写材シー
トＰの搬送方向に順方向の反時計方向に回転する。Reference numeral 28 denotes a pressure roller as a pressure member having a rubber elastic layer with good releasability such as silicon rubber,
The lower side film portion of the endless vest-shaped fixing film 24 is sandwiched and the lower surface of the low heat capacity linear heating body 20 is biased by a biasing means (not shown), for example, a total pressure of 4 to 12
They are pressed against each other with a pressing force of kg, and rotate in the forward counterclockwise direction in the conveying direction of the transfer material sheet P.
【００１６】回動駆動されるエンドレスベルト状の定着
フィルム２４は繰り返してトナー画像の加熱定着に供さ
れるから、耐熱性・離型性・耐久性に優れたもので、一
般的には１００μｍ以下、好ましくは４０μｍ以下の薄
肉のものを使用する。例えばポリイミド・ポリエーテル
イミド・ＰＥＳ・ＰＦＡ（４フッ化エチレン−パーフル
オロアルキルビニルエーテル共重合体樹脂）などの耐熱
樹脂の単層フィルム、或いは複合層フィルム例えば２０
μｍ厚フィルムの少なくとも画像当接面側にＰＴＦＥ
（４フッ化エチレン樹脂）・ＰＡＦ等のフッ素樹脂に導
電材を添加した離型性コート層を１０μｍ厚に施したも
のなどである。Since the endless belt-shaped fixing film 24 which is rotationally driven is repeatedly used for heat fixing of the toner image, it has excellent heat resistance, releasability and durability, and is generally 100 μm or less. It is preferable to use a thin film having a thickness of 40 μm or less. For example, a single layer film of a heat-resistant resin such as polyimide, polyether imide, PES, PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin) or a composite layer film, for example, 20
At least on the image contact surface side of the μm thick film, PTFE
(Tetrafluoride ethylene resin) -A resin having a releasable coating layer of a conductive resin added to a fluororesin such as PAF and having a thickness of 10 μm.
【００１７】加熱体（ヒータ）としての低熱容量線状加
熱体２０は、本例のものは、定着フィルム横断方向（定
着フィルム２４の走行方向に直角方向）を長手とする、
通電発熱体２２・検温素子２３・表面層３０等を具備し
たヒータ基板２１からなる。この加熱体２０を剛性・高
耐熱性・断熱性を有するヒータ支持体２７で固定支持さ
せてある。。In the present example, the low heat capacity linear heating element 20 as a heating element (heater) has a longitudinal direction in the transverse direction of the fixing film (direction perpendicular to the running direction of the fixing film 24).
The heater substrate 21 includes an electric heating element 22, a temperature measuring element 23, and a surface layer 30. The heater 20 is fixedly supported by a heater support 27 having rigidity, high heat resistance and heat insulation. ..
【００１８】ヒータ支持体２７は線状加熱体２０を機械
全体に対し断熱するもので、例えばＰＰＳ（ポリフェニ
レンサルファイド）、ＰＡＩ（ポリアミドイミド）、Ｐ
Ｉ（ポリイミド）、ＰＥＥＫ（ポリエーテルエーテルケ
トン）、液晶ポリマー等の高耐熱性樹脂や、これらの樹
脂とセラミックス、金属、ガラス等との複合材料などで
構成できる。The heater support 27 insulates the linear heating element 20 from the entire machine. For example, PPS (polyphenylene sulfide), PAI (polyamide imide), P
It can be made of high heat resistant resin such as I (polyimide), PEEK (polyether ether ketone), liquid crystal polymer, or a composite material of these resins and ceramics, metal, glass or the like.
【００１９】ヒータ基板２１は耐熱性・絶縁性・低熱容
量・高熱伝導性の部材であり、一例として厚み１ｍｍ・
幅１６ｍｍ・長さ３４０ｍｍのアルミナ基板である。The heater substrate 21 is a member having heat resistance, insulation, low heat capacity, and high heat conductivity, and as an example, the thickness is 1 mm.
It is an alumina substrate having a width of 16 mm and a length of 340 mm.
【００２０】発熱体２２は、基板２１の下面の略中央部
に沿って、例えばＡｇ／Ｐｄ（銀パラジウム）・Ｔａ2
Ｎ等の電気抵抗材料を厚み約１０μｍ、幅１〜３ｍｍに
スクリーン印刷等により細帯状に塗工したものである。The heating element 22 is, for example, Ag / Pd (silver palladium) .Ta 2 along the substantially central portion of the lower surface of the substrate 21.
An electrical resistance material such as N having a thickness of about 10 μm and a width of 1 to 3 mm is applied in a strip shape by screen printing or the like.
【００２１】その上に絶縁・保護を目的とした表面層３
０としてのガラス層を備える。またさらにこの上に定着
フィルム２４との摺擦摩擦を低減するためにＰＦＡ・Ｐ
ＴＦＥ等の滑性表面層をコートしても良い。On top of that, a surface layer 3 for the purpose of insulation and protection
The glass layer as 0 is provided. Furthermore, in order to further reduce the sliding friction with the fixing film 24, PFA / P
A smooth surface layer such as TFE may be coated.
【００２２】検温素子２３は一例としてヒータ基板２１
の上面（発熱体２２を設けた面とは反対側の面）の略中
央部にスクリーン印刷等により塗工して具備させたＰｔ
膜等の低熱容量の測温抵抗体である。検温素子として
は、他に低熱容量のサーミスタなどをヒータ基板２１に
当接配置する構成にしてもよい。The temperature detecting element 23 is, for example, the heater substrate 21.
Pt applied by screen printing or the like to the substantially central portion of the upper surface (the surface opposite to the surface on which the heating element 22 is provided) of
It is a resistance temperature detector with a low heat capacity such as a film. Alternatively, as the temperature detecting element, a thermistor having a low heat capacity may be arranged in contact with the heater substrate 21.
【００２３】本例の加熱体２０は線状又は帯状をなす発
熱体２２に対しその長手方向両端部より通電し、発熱体
２２をほぼ略全長にわたって発熱させる。通電はＡＣ１
００Ｖであり、検温素子２３の検知温度に応じてトライ
アックを含む不図示の通電制御回路により通電する位相
角を制御することにより通電電力を制御している。In the heating element 20 of the present embodiment, electricity is applied to the linear or strip heating element 22 from both ends in the longitudinal direction, and the heating element 22 generates heat over substantially the entire length. Power is AC1
It is 00 V, and the energizing power is controlled by controlling the energizing phase angle by an energization control circuit (not shown) including a triac according to the temperature detected by the temperature detecting element 23.
【００２４】画像形成スタート信号により画像形成部
（Ａ）が動作して該画像形成部から定着装置へ搬送され
た、未定着のトナー画像Ｔａを上面に担持した記録材Ｐ
はガイドに案内されて加熱体２０と加圧ローラ２８との
圧接部（定着部）Ｎの定着フィルム２４と加圧ローラ２
８との間に進入して、未定着トナー画像面が記録材シー
トＰの搬送速度と同一速度で同方向に回動状態の定着フ
ィルム２４の下面に密着して面ズレやしわ寄りを生じる
ことなく定着フィルム２４と一緒の重なり状態で加熱体
２０と加圧ローラ２８との相互圧接部Ｎ間を挟圧力を受
けつつ通過していく。加熱体２０は画像形成スタート信
号により所定のタイミングで通電加熱されるので、トナ
ー画像Ｔａは圧接部Ｎにおいて加熱を受けて軟化・溶融
像Ｔｂとなる。The image forming section (A) operates in response to the image forming start signal, and the recording material P having the unfixed toner image Ta carried on the upper surface thereof is conveyed from the image forming section to the fixing device.
Is guided by the guide to the fixing film 24 and the pressure roller 2 at the pressure contact portion (fixing portion) N between the heating body 20 and the pressure roller 28.
8 and the unfixed toner image surface comes into close contact with the lower surface of the fixing film 24 which is rotated in the same direction as the conveyance speed of the recording material sheet P in the same direction to cause surface deviation or wrinkling. Instead, it passes between the heating member 20 and the pressure roller 28 in the overlapping state together with the fixing film 24 while receiving a clamping pressure. Since the heating element 20 is electrically heated at a predetermined timing in response to the image formation start signal, the toner image Ta is heated at the press contact portion N and becomes the softened / melted image Tb.
【００２５】定着フィルム２４は、ヒータ支持体２７の
曲率の大きいエッジ部Ｓ（曲率半径が約２ｍｍ）におい
て、急角度は（屈曲角度θが略４５゜）で走行方向が転
向する。従って、定着フィルム２４と重なった状態で圧
接部Ｎを通過して搬送されたシートＰは、エッジ部Ｓに
おいて定着フィルム２４から曲率分離し排紙されてゆ
く。排紙される時までにはトナーは十分冷却固化しシー
トＰに完全に定着した状態（トナー画像Ｔｃ）となって
いる。At the edge portion S (having a radius of curvature of about 2 mm) having a large curvature of the heater support 27, the fixing film 24 has its running direction turned at a steep angle (bending angle θ is about 45 °). Therefore, the sheet P conveyed through the pressure contact portion N in a state of being overlapped with the fixing film 24 is curvature-separated from the fixing film 24 at the edge portion S and is discharged. By the time the paper is ejected, the toner is sufficiently cooled and solidified and is in a state of being completely fixed on the sheet P (toner image Tc).
【００２６】加熱体２０は発熱体２２及びヒータ基板２
１の熱容量が小さく、かつ、これらが支持体２７により
断熱支持されているので、圧接部Ｎにおける加熱体２０
の表面温度は短時間にトナーの融点（又はシートＰへの
定着可能温度）に対して十分な高温に昇温するので、加
熱体２０をあらかじめ昇温させておく（いわゆるスタン
バイ温調）必要がなく、省エネルギーが実現でき、しか
も機内昇温も防止できる。The heating element 20 includes a heating element 22 and a heater substrate 2.
Since the heat capacity of 1 is small and these are adiabatically supported by the support body 27, the heating body 20 in the press contact portion N is
Since the surface temperature of the heating element rises to a sufficiently high temperature with respect to the melting point of the toner (or the fixing temperature on the sheet P) in a short time, it is necessary to raise the heating body 20 in advance (so-called standby temperature adjustment). In addition, energy saving can be realized and temperature rise inside the machine can be prevented.
【００２７】本実施例では図３に示すようにヒータ支持
体２７のヒータ取付け面側に長手に沿って溝２７ａを設
け、該支持体２７の両端部２７ｂ・２７ｂと長手両側縁
部２７ｃ・２７ｃにおいて加熱体２０を受けさせて固定
支持させてある。In this embodiment, as shown in FIG. 3, a groove 27a is provided along the longitudinal direction on the heater mounting surface side of the heater support 27, and both ends 27b and 27b of the support 27 and both longitudinal side edges 27c and 27c. In, the heating element 20 is received and fixedly supported.
【００２８】ヒータ支持体２７の上記溝２７ａの幅は加
熱体２０よりも広く、また長手においても長くとり、そ
の深さは０．１ｍｍ以上とする。The width of the groove 27a of the heater support 27 is wider than that of the heating body 20 and longer in length, and the depth thereof is 0.1 mm or more.
【００２９】これにより図２のように加熱体２０とヒー
タ支持体２７との間には空隙Ｓが存在してこの空隙Ｃの
空気断熱効果と、支持体２７自体の断熱性とが相まっ
て、加熱体２０から支持体２７への奪熱が押えられ加熱
体２０の熱効率が向上する。As a result, as shown in FIG. 2, there is a space S between the heating body 20 and the heater support 27, and the air insulation effect of this space C is combined with the heat insulation of the support 27 itself, so that heating is performed. The heat removal from the body 20 to the support 27 is suppressed, and the thermal efficiency of the heating body 20 is improved.
【００３０】実験によれば、加熱体２０として、長さ２
１６ｍｍ・幅４ｍｍの発熱体２２を具備させたヒータ基
板２１を用いた場合、これを従来の平坦なヒータ支持体
に接着剤等で全面的に空気層を介在させずに密着固定支
持させたものと比べて、ヒータ支持体２７に長さ２３０
ｍｍ、幅６ｍｍ、深さ０．５ｍｍの溝２７ａを設けて該
加熱体２０を空隙Ｃを介して固定支持させたものは、消
費電力において５％削減され、ウェイトタイムは約１０
％短縮された。According to the experiment, the heating body 20 has a length of 2
When a heater substrate 21 having a heating element 22 having a width of 16 mm and a width of 4 mm is used, it is firmly fixed and supported on a conventional flat heater support member with an adhesive or the like without interposing an air layer. In comparison with the heater support 27, the length 230
mm, width 6 mm, and depth 0.5 mm provided with the groove 27a fixedly supporting the heating body 20 through the void C reduces power consumption by 5% and the wait time is about 10%.
% Shortened.
【００３１】 ＜第２実施例＞（図４） 本実施例は図４に示すように、ヒータ支持体２７の加熱
体取付け面にＨ型の凸リブ２７ｄを具備させ、この凸リ
ブ２７ｄに加熱体２０を受けさせて接着固定支持させる
ことで、加熱体２０とヒータ支持体２７との間に凸リブ
２７ｄの肉厚分に相当する断熱空隙（Ｃ）を存在させる
ものである。<Second Embodiment> (FIG. 4) In this embodiment, as shown in FIG. 4, an H-shaped convex rib 27d is provided on the heating body mounting surface of the heater support 27, and the convex rib 27d is heated. By allowing the body 20 to be received and adhesively fixed and supported, a heat insulating space (C) corresponding to the thickness of the convex rib 27 d is present between the heating body 20 and the heater support 27.
【００３２】これにより第１実施例と同様の効果が得ら
れる上、加熱体２０をヒータ基板２１の中央において支
持できるため強度が得られ、大きな加圧にまで耐えるこ
とが出来る。As a result, the same effect as that of the first embodiment can be obtained, and since the heating body 20 can be supported at the center of the heater substrate 21, strength can be obtained and even a large pressure can be endured.
【００３３】 ＜第３実施例＞（図５） 本実施例は図５に示すように、ヒータ支持体２７の加熱
体取付け面に５点の突起部２７ｅを具備させ、この各突
起部２７ｅに加熱体２０を受けさせて接着固定支持させ
ることで、加熱体２０とヒータ支持体２７との間に突起
部２７ｅの高さ分に相当する断熱空隙（Ｃ）を存在させ
るものである。<Third Embodiment> (FIG. 5) In this embodiment, as shown in FIG. 5, the heating member mounting surface of the heater support 27 is provided with five protrusions 27e, and each protrusion 27e is provided with each protrusion 27e. By allowing the heating body 20 to be received and adhesively fixed and supported, a heat insulating void (C) corresponding to the height of the protrusion 27e is present between the heating body 20 and the heater support 27.
【００３４】これにより第１実施例と同様の効果が得ら
れる上、加熱体２０とヒータ支持体２７の接触面積を小
さく抑えることができ、熱効率をより向上できる。As a result, the same effect as that of the first embodiment can be obtained, and the contact area between the heating body 20 and the heater support 27 can be suppressed to be small, and the thermal efficiency can be further improved.
【００３５】[0035]
【発明の効果】以上のように本発明はフィルム加熱方式
の加熱装置において、加熱体から支持部材への奪熱、更
には該支持体から他部への熱伝導・放散が低減されて、
熱効率の低下が押えられる。これにより該加熱装置の省
電力性、クイックスタート性等の特性を向上させること
ができる。As described above, according to the present invention, in the film heating type heating device, heat transfer from the heating body to the supporting member and further heat conduction / dissipation from the supporting body to other parts are reduced,
Reduction of thermal efficiency is suppressed. As a result, the characteristics of the heating device such as power saving and quick start can be improved.
【図１】 本発明の加熱装置の一実施例としての画像加
熱定着装置の概略構成図FIG. 1 is a schematic configuration diagram of an image heating and fixing device as an example of a heating device of the present invention.
【図２】 加熱体と支持体部分の拡大横断面図FIG. 2 is an enlarged cross-sectional view of a heating body and a support portion.
【図３】 ヒータ支持体の斜視図FIG. 3 is a perspective view of a heater support.
【図４】 第２実施例におけるヒータ支持体の斜視図FIG. 4 is a perspective view of a heater support according to a second embodiment.
【図５】 第３実施例におけるヒータ支持体の斜視図FIG. 5 is a perspective view of a heater support according to a third embodiment.
２４ 耐熱性フィルム（定着フィルム） ２０ 加熱体 ２１ ヒータ基板 ２２ 発熱体 ２７ ヒータ支持体 Ｃ 加熱体とヒータ支持体との間の断熱空隙部 Ｐ 被加熱材（記録材シート） 24 Heat Resistant Film (Fixing Film) 20 Heater 21 Heater Substrate 22 Heater 27 Heater Support C Heat Insulation Gap Between Heater and Heater Support P Heated Material (Recording Material Sheet)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥田 幸一 東京都大田区下丸子３丁目30番２号 キヤ ノン株式会社内 (72)発明者 荒矢 順治 東京都大田区下丸子３丁目30番２号 キヤ ノン株式会社内 (72)発明者 中村 俊治 東京都大田区下丸子３丁目30番２号 キヤ ノン株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Koichi Okuda 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Junji Araya 3-30-2 Shimomaruko, Ota-ku, Tokyo Kya Non-corporation (72) Inventor Shunji Nakamura 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.
Claims (1)
面側に被加熱材を密着させ、前記耐熱性フィルムを介し
て加熱体の熱エネルギーを被加熱材に付与する加熱装置
において、加熱体と該加熱体を固定支持する部材との間
に空隙を設けたことを特徴とする加熱装置。1. A heating device in which a heating element is adhered to one surface side of a heat resistant film and a material to be heated is adhered to the other surface side, and heat energy of the heating element is applied to the material to be heated through the heat resistant film, A heating device, characterized in that a gap is provided between the heating body and a member for fixing and supporting the heating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26708091A JPH0582243A (en) | 1991-09-18 | 1991-09-18 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26708091A JPH0582243A (en) | 1991-09-18 | 1991-09-18 | Heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0582243A true JPH0582243A (en) | 1993-04-02 |
Family
ID=17439756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26708091A Pending JPH0582243A (en) | 1991-09-18 | 1991-09-18 | Heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0582243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12044993B2 (en) | 2020-11-24 | 2024-07-23 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
-
1991
- 1991-09-18 JP JP26708091A patent/JPH0582243A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12044993B2 (en) | 2020-11-24 | 2024-07-23 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
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