JP2884714B2 - Image heating device - Google Patents

Image heating device

Info

Publication number
JP2884714B2
JP2884714B2 JP15360290A JP15360290A JP2884714B2 JP 2884714 B2 JP2884714 B2 JP 2884714B2 JP 15360290 A JP15360290 A JP 15360290A JP 15360290 A JP15360290 A JP 15360290A JP 2884714 B2 JP2884714 B2 JP 2884714B2
Authority
JP
Japan
Prior art keywords
film
heating
recording
roller
image
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.)
Expired - Lifetime
Application number
JP15360290A
Other languages
Japanese (ja)
Other versions
JPH0444075A (en
Inventor
武 世取山
明 黒田
新一 佐々木
Original Assignee
キヤノン株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by キヤノン株式会社 filed Critical キヤノン株式会社
Priority to JP15360290A priority Critical patent/JP2884714B2/en
Priority claimed from EP91109513A external-priority patent/EP0461595B1/en
Publication of JPH0444075A publication Critical patent/JPH0444075A/en
Application granted granted Critical
Publication of JP2884714B2 publication Critical patent/JP2884714B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、加熱体に圧接させて移動駆動させた耐熱性
フィルムの加熱体側とは反対面側に、顕画像を支持する
記録材を導入して密着させてフィルムと一緒に加熱体位
置を通過させることで加熱体の熱をフィルムを介して導
入記録材に与える方式(フィルム加熱方式)の像加熱装
置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention introduces a recording material for supporting a visible image on a surface of a heat-resistant film, which is pressed against a heating body and moved and moved, on the side opposite to the heating body side. The present invention relates to an image heating apparatus of a system (film heating system) in which heat of a heating body is applied to an introduced recording material via a film by passing the heating body together with a film through the heating body.
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より成るトナーを用いて
記録材(転写材シート・エレクトロファックスシート・
静電記録シート・印刷紙など)の面に間接(転写)方式
もしくは直接方式で形成した、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画像加熱定着
装置として活用できる。
This apparatus is composed of an image heating and fixing device in an image forming apparatus such as an electrophotographic copying machine, a printer, a facsimile, etc., that is, a resin which can be heated and melted by an appropriate image forming process means such as electrophotography, electrostatic recording and magnetic recording. Recording material (transfer material sheet, electrofax sheet,
An unfixed toner image corresponding to the target image information, formed on the surface of an electrostatic recording sheet, printing paper, etc.) by the indirect (transfer) method or the direct method is permanently attached to the recording material surface carrying the image. The present invention can be used as an image heat fixing device for performing heat fixing processing as a fixed image.
また、例えば、画像を担持した記録材を加熱して表面
性を改質(つや出しなど)する装置、仮定着処置する装
置に使用できる。
Further, for example, the present invention can be used for an apparatus for improving the surface properties (such as polishing) by heating a recording material carrying an image, and for an apparatus for performing a temporary fixing treatment.
(背景技術) 従来、例えば、画像の加熱定着のための記録材の加熱
装置は、所定の温度に維持された加熱ローラと、弾性層
を有して該加熱ローラに圧接する加圧ローラとによっ
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。
(Background Art) Conventionally, for example, a heating device for a recording material for fixing an image by heating includes a heating roller maintained at a predetermined temperature and a pressure roller having an elastic layer and pressing against the heating roller. A heat roller method of heating a recording material while nipping and conveying the recording material is often used.
その他、フラッシュ加熱方式、オーブン加熱方式、熱
板加熱方式、ベルト加熱方式、高周波加熱方式など種々
の方式のものが知られている。
In addition, various methods such as a flash heating method, an oven heating method, a hot plate heating method, a belt heating method, and a high frequency heating method are known.
一方、本出願人は例えば特開昭63−313182号公報等に
おいて、固定支持された加熱体(以下ヒーターと記す)
と、該ヒーターに対向圧接しつつ搬送(移動駆動)され
る耐熱性フィルムフィルムと、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・構成の装置を提案し、既に実用にも供してい
る。
On the other hand, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 63-313182, for example, a fixedly supported heating element (hereinafter referred to as a heater).
A heat-resistant film that is conveyed (moved and driven) while being in opposing pressure contact with the heater; and a pressing member that causes the recording material to be in close contact with the heater via the film, and records the heat of the heater through the film. An apparatus having a method and a configuration for heating and fixing an unfixed image formed and carried on a recording material surface to a recording material surface by applying the recording medium to the recording material surface has been proposed and has already been put to practical use.
より具体的には、薄肉の耐熱性フィルム(又はシー
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置されたヒータ
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実行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略
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
ニップ部を通過させることにより該記録材の顕画担持面
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。
More specifically, a thin heat-resistant film (or sheet), a means for driving the movement of the film, a heater fixedly supported and disposed on one side with the film in the middle, and a heater disposed on the other side A pressurizing member disposed opposite to the heater to bring a visible image bearing surface of a recording material to be image-fixed through the film into close contact with the heater, wherein the film is at least at the time of performing image fixing; The recording material to be image-fixed conveyed and introduced between the paper and the pressing member, is moved in the forward direction at substantially the same speed, and is formed by pressing the heater and the pressing member with the moving film therebetween. By passing through the nip portion as a part, the developed image carrying surface of the recording material is heated by the heater through the film to apply thermal energy to the developed image (unfixed toner image) to soften and melt the image, Then after passing through the fixing section A heating means or apparatus which is based on that to separate the film and the recording material at the separation point.
この様なフィルム加熱方式の装置においては、昇温の
速い加熱体と薄膜のフィルムを用いるためウエイトタイ
ム短縮化(クイックスタート)が可能となる、その他、
従来装置の種々の欠点を解決できるなどの利点を有し、
効果的なものである。
In such an apparatus of the film heating system, the use of a heating element and a thin film with a rapid rise in temperature makes it possible to shorten the weight time (quick start).
It has advantages such as being able to solve various disadvantages of the conventional device,
It is effective.
第13図に耐熱性フィルムとしてエンドレスフィルムを
使用したこの種方式の画像加熱定着装置の一例の概略構
成を示した。
FIG. 13 shows a schematic configuration of an example of this type of image heating and fixing apparatus using an endless film as a heat resistant film.
51はエンドレスベルト状の耐熱性フィルム(以下、定
着フィルム又は単にフィルムと記す)であり、左側の駆
動ローラ52と、右側の従動ローラ53と、これ等の駆動ロ
ーラ52と従動ローラ53間の下方に配置した低熱容量線状
加熱体54の互いに並行な該3部材52・53・54間に懸回張
設してある。
Reference numeral 51 denotes an endless belt-shaped heat-resistant film (hereinafter, referred to as a fixing film or simply a film), which includes a left driving roller 52, a right driven roller 53, and a lower portion between the driving roller 52 and the driven roller 53. The low-heat-capacity linear heating element 54 is suspended between the three members 52, 53, 54 which are parallel to each other.
定着フィルム51は駆動ローラ52の時計方向回転駆動に
伴ない時計方向に所定の周速度、即ち不図示の画像形成
部側から搬送されてくる未定着トナー画像Taを上面に担
持した被加熱材としての記録材シートPの搬送速度(プ
ロセススピード)と略同じ周速度をもって回転駆動され
る。
The fixing film 51 serves as a heated material carrying an unfixed toner image Ta conveyed from an image forming unit (not shown) on the upper surface at a predetermined peripheral speed in a clockwise direction accompanying the clockwise rotation of the driving roller 52. The recording material sheet P is driven to rotate at a peripheral speed substantially equal to the conveying speed (process speed) of the recording material sheet P.
55は加圧部材としての加圧ローラであり、前記のエン
ドレスベルト状の定着フィルム51の下行側フィルム部分
を挟ませて前記加熱体54の下面に対して不図示の付勢手
段により圧接させてあり、記録材シートPの搬送方向に
順方向の反時計方向に回転する。
Reference numeral 55 denotes a pressing roller as a pressing member, which presses the lower end of the endless belt-shaped fixing film 51 against the lower surface of the heating element 54 by pressing means (not shown). Yes, the recording material sheet P rotates counterclockwise in the forward direction in the transport direction.
加熱体54はフィルム51の面移動方向と交差する方向
(フィルムの幅方向)を長手とする低熱容量線状加熱体
であり、ヒータ基板(ベース材)56・通電発熱抵抗体
(発熱体)57・表面保護層58・検温素子59等よりなり、
断熱材60を介して支持体61に取付けて固定支持させてあ
る。
The heating element 54 is a low-heat-capacity linear heating element whose longitudinal direction is the direction intersecting with the plane movement direction of the film 51 (the width direction of the film), and includes a heater substrate (base material) 56 and a current-generating heating resistor (heating element) 57. -Consists of a surface protective layer 58, a temperature sensor 59, etc.
It is fixed to and supported by a support 61 via a heat insulating material 60.
不図示の画像形成部から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シートPはガイド62に案内
されて加熱体54と加圧ローラ55との圧接部Nの定着フィ
ルム51と加圧ローラ55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
に回動駆動状態の定着フィルム51の下面に密着してフィ
ルムと一緒の重なり状態で加熱体54と加圧ローラ55との
相互圧接部N間を通過していく。
A recording material sheet P carrying an unfixed toner image Ta conveyed from an image forming unit (not shown) on the upper surface is guided by a guide 62 and is fixed to a fixing film 51 of a pressure contact portion N between a heating element 54 and a pressure roller 55. The non-fixed toner image enters the gap between the pressure roller 55 and the unfixed toner image surface is brought into close contact with the lower surface of the fixing film 51 which is rotationally driven in the same direction at the same speed as the conveyance speed of the recording material sheet P and is together with the film. It passes between the mutual press contact portions N between the heating element 54 and the pressure roller 55 in an overlapping state.
加熱体54は所定のタイミングで通電加熱されて該加熱
体54側の熱エネルギーがフィルム51を介して該フィルム
に密着状態の記録材シートP側に伝達され、トナー画像
Taは圧接部Nを通過していく過程において加熱を受けて
軟化・溶融像Tbとなる。
The heating element 54 is energized and heated at a predetermined timing, and the thermal energy of the heating element 54 is transmitted to the recording material sheet P in close contact with the film via the film 51, and a toner image is formed.
Ta is heated and becomes a softened / melted image Tb in the process of passing through the press-contact portion N.
回動駆動されている定着フィルム51は断熱材60の曲率
の大きいエッジ部Sにおいて、急角度で走行方向が転向
する。従って、定着フィルム51と重なった状態で圧接部
Nを通過して搬送された記録材シートPは、エッジ部S
において定着フィルム51から曲率分離し、排紙されてゆ
く。排紙部へ至る時までにはトナーは十分に冷却固化し
記録材シートPに完全に定着Tcした状態となっている。
The running direction of the rotatingly driven fixing film 51 is turned at a steep angle at the edge portion S of the heat insulating material 60 where the curvature is large. Accordingly, the recording material sheet P conveyed through the pressure contact portion N in a state where the recording material sheet P overlaps the fixing film 51 is moved to the edge portion S
In the above, the curvature is separated from the fixing film 51 and the paper is discharged. By the time the toner reaches the paper discharge section, the toner is sufficiently cooled and solidified, and is in a state of being completely fixed Tc on the recording material sheet P.
(発明が解決しようとする問題点) このようなフィルム加熱方式の装置は問題点として次
のようなことが挙げられている。
(Problems to be Solved by the Invention) Such a film heating system apparatus has the following problems as problems.
(1)フィルム51に常に全周的にテンションを加えてフ
ィルムを張り状態にしてフィルムを搬送駆動する系で
は、フィルムの搬送駆動に大きな駆動トルクを必要とし
た。その結果、装置構成部品や駆動力伝達手段等の剛性
や性能をグレードアップして信頼性を確保する必要があ
り、装置構成の複雑化、大型化、コストアップ化等の一
因となっている。
(1) In a system in which the film 51 is constantly tensioned over the entire circumference and the film is stretched and the film is transported, a large driving torque is required for the film transport driving. As a result, it is necessary to upgrade the rigidity and performance of the device components and the driving force transmitting means, etc., to ensure reliability, which contributes to the complexity, size, cost, etc. of the device configuration. .
(2)駆動ローラ52と従動ローラ53間や、それ等のロー
ラと加熱体54間の平行度などアライメントが狂った場合
には、これ等の部材52・53・54間に常に全周的にテンシ
ョンが加えられて懸回張設されているフィルム51には部
材52・53・54の長手に沿ってフィルム幅方向の一端側又
は他端側への非常に大きな寄り力が働く。
(2) If the alignment such as the parallelism between the driving roller 52 and the driven roller 53 or the parallelism between the rollers and the heating element 54 is incorrect, the entire circumference of the member 52, 53, 54 is always required. A very large biasing force acts on one end or the other end in the film width direction along the length of the members 52, 53, and 54 on the film 51 which is tensioned and suspended.
フィルム51としては熱容量を小さくしてクイックスタ
ート性をよくするために100μm以下好ましくは40μm
以下のもともと剛性の低い(コシが弱い)薄肉のものが
使用されており、また該フィルム51が複数の掛け渡し部
材52・53・54間に掛け渡されるためにフィルムの周長も
長く、その結果としてもフィルム51の剛性が低いもので
あるところ、このようなフィルムに上述のような非常に
大きな寄り力が働いて寄り移動することでその寄り移動
側のフィルム端部がその側の装置部材に押し当たると、
フィルム端部は大きな寄り力に耐え切れずに座屈・破損
等のダメージを生じる結果となる。
100 μm or less, preferably 40 μm, for improving the quick start property by reducing the heat capacity as the film 51
Originally, a thin material having a low rigidity (low stiffness) is used, and the film 51 is stretched between a plurality of bridging members 52, 53, 54, so that the circumferential length of the film is long. As a result, even though the rigidity of the film 51 is low, such a film is subjected to a very large biasing force as described above to move and the film end on the shift side is shifted to the device member on the side. When you hit
The end of the film cannot withstand a large deviation force, resulting in damage such as buckling or breakage.
またフィルム51の寄り位置によってはフィルムの搬送
力のバランスが崩れたり、定着時の加圧力のバランスが
均一にならなかったり、加熱体54の温度分布のバランス
が崩れる等の問題が生じることもある。
Further, depending on the position of the film 51, there may be a problem that the balance of the conveying force of the film is lost, the balance of the pressing force at the time of fixing is not uniform, and the balance of the temperature distribution of the heating element 54 is lost. .
本発明は同じくエンドレスの耐熱性フィルムを用いた
フィルム加熱方式に属するものであるが、駆動トルク・
フィルム寄り力の低減を図り、上述のような問題点を解
消した像加熱装置を提供することを目的とする。
The present invention also belongs to a film heating method using an endless heat-resistant film,
It is an object of the present invention to provide an image heating apparatus which can reduce a film shift force and solve the above-mentioned problems.
(問題点を解決するための手段) 本発明は、加熱体と、前記加熱体と摺動するエンドレ
ス状のフィルムと、前記フィルムを介して前記加熱体と
ニップを形成しフィルムを駆動する駆動回転部材と、前
記フィルムの内側に設けられたフィルムをガイドするた
めのガイド部材と、を有し、前記フィルムは前記ガイド
部材に対してルーズに懸回されており、前記ガイド部材
は少なくとも前記フィルムの移動方向に関して前記加熱
体の上流側にガイド部を有し、前記ニップで画像を担持
した記録材を挟持搬送し画像を加熱する像加熱装置にお
いて、前記フィルムの駆動時、前記フィルムは前記ガイ
ド部と前記ニップでテンションが作用しており、前記ガ
イド部と前記ニップの間に前記フィルムをガイドしない
非ガイド部を有することを特徴とする像加熱装置、であ
る。
(Means for Solving the Problems) The present invention provides a heating element, an endless film that slides on the heating element, and a driving rotation that forms a nip with the heating element via the film and drives the film. Member, and a guide member for guiding a film provided inside the film, the film is loosely suspended with respect to the guide member, the guide member is at least the film In an image heating apparatus having a guide portion on the upstream side of the heating body with respect to a moving direction, and nipping and conveying a recording material carrying an image in the nip and heating the image, the film is driven by the guide portion when the film is driven. And a non-guide portion that does not guide the film between the guide portion and the nip. Thermal equipment.
(作用) (1)フィルムを駆動させ、加熱体を発熱させた状態に
おいて、フィルムを挟んで加熱体と圧接部材(駆動回転
部材)との間に形成させたニップ部のフィルムと圧接部
材との間に顕画像を支持した記録材を顕画像担持面側を
フィルム側にして導入すると、記録材はフィルム外面に
密着してフィルムと一緒にニップ部を移動通過してい
き、その移動通過過程でニップ部においてフィルム内面
に接している加熱体の熱エネルギーがフィルムを介して
記録材に付与され、顕画像を支持した記録材がフィルム
加熱方式で加熱処理される。
(Operation) (1) In a state where the film is driven and the heating element generates heat, the film in the nip portion formed between the heating element and the pressure contact member (driving rotary member) with the film interposed therebetween and the pressure contact member. When the recording material supporting the developed image is introduced with the developed image carrying surface side in the film side, the recording material adheres to the outer surface of the film and moves through the nip together with the film, and in the process of moving and passing. In the nip portion, the thermal energy of the heating element in contact with the inner surface of the film is applied to the recording material via the film, and the recording material supporting the visible image is heated by a film heating method.
(2)フィルムは少なくとも一部は常に即ちフィルム非
駆動時もフィルム駆動時もテンションフリー(テンショ
ンが加わらない状態)の部分がある構成(テンションフ
リータイプ)となすことにより、前述第13図例装置のも
ののように周長の長いフィルムを常に全周的にテンショ
ンを加えて張り状態にして駆動させる構成(テンション
タイプ)のものに比べてフィルム駆動のための駆動トル
クを大幅に低減することが可能となる。
(2) The film shown in FIG. 13 is provided with a structure in which at least a part of the film has a tension-free portion (a state in which tension is not applied) at all times, that is, both when the film is not driven and when the film is driven. It is possible to greatly reduce the driving torque for film driving compared to the configuration (tension type) in which a film with a long perimeter is always tensioned and driven over the entire circumference, such as that of Becomes
従って装置構成や駆動系構成を簡略化・小型化・低コ
スト化等すること、装置構成部品や組み立て精度をラフ
にすることも可能となる。
Therefore, it is possible to simplify, reduce the size, reduce the cost, and the like of the device configuration and the drive system configuration, and to make the device components and assembly accuracy rough.
(3)またフィルル駆動過程でフィルム幅方向の一方側
又は他方側への寄り移動を生じたとしてもその寄り力は
前述第13図例のテンションタイプの装置のもののように
フィルム全周長にテンションが加わっているものよりも
大幅に小さいものとなる。
(3) Even if the film is shifted to one side or the other side in the film width direction in the process of driving the filter, the shift force is set to a tension corresponding to the entire circumference of the film as in the tension type apparatus of FIG. Is significantly smaller than the one with
そのためフィルムが寄り移動してその寄り移動側のフ
ィルム端部がその側の装置サイド部材に押し当り状態に
なってもフィルム寄り力が小さいのでその寄り力に対し
フィルムの剛性(コシの強さ)が十分に打ち勝ちフィル
ム端部のダメージが防止される。
Therefore, even if the film shifts and the film end on the shift side comes into contact with the device side member on that side, the film shift force is small, so the film rigidity (strength) against the shift force is small. Is sufficiently overcome to prevent damage to the edge of the film.
従ってフィムルの寄り移動を例えば鍔座(フランジ部
材)のような簡単なフィルム端部規制部材により規制す
ることが可能となり、フィルムの寄り移動検知手段・戻
し移動手段等を含む大掛りなフィルム寄り移動制御機構
の必要性はなく、この点においても装置構成を簡略化・
小型化・低コスト化等することが可能となる。
Therefore, it is possible to restrict the deviation movement of the film by a simple film end regulating member such as a flange seat (flange member), and a large film deviation movement including a film deviation detection means and a return movement means. There is no need for a control mechanism.
It is possible to reduce the size and cost.
またフィルムとしては寄り力が低下する分、剛性を低
下させることができるので、より薄肉で熱容量が小さい
ものを使用して装置のクイックスタート性を向上させる
ことが可能となる。
In addition, since the film can be reduced in rigidity as much as the biasing force is reduced, it is possible to improve the quick start property of the apparatus by using a thinner film having a smaller heat capacity.
(4)フィルムは、非駆動時においては加熱体と圧接部
材とのニップ部に挟まれている部分を除く残余の大部分
の略全周長部分がテンションフリーであり、フィルム駆
動がなされると、該ニップ部と、該ニップ部よりもフィ
ルム移動方向上流側であって該ニップ部近傍のフィルム
内面ガイド部分と該ニップ部の間の部分のみにおいてテ
ンションが加わる関係構成とすることで、(2)・
(3)項でのべたようにフィルム駆動力が小さく、また
フィルム寄り力も小さくなると共に、このフィルム駆動
時においては少なくともニップ部の記録材進入側近傍の
フィルム部分面及びニップ部のフィルム部分面について
のシワの発生が上記テンションの作用により防止され
る。
(4) When the film is not driven, almost the entire circumference of the film except for the portion sandwiched between the nip portion between the heating element and the pressure contact member is tension-free, and when the film is driven. (2) The tension is applied only to the portion between the nip portion and the film inner surface guide portion near the nip portion on the upstream side of the nip portion in the film moving direction and between the nip portion. ) ・
As described in the item (3), the film driving force is small and the film biasing force is also small. At the time of driving the film, at least the film partial surface near the recording material entry side of the nip portion and the film partial surface of the nip portion Is prevented by the action of the tension.
これによりニップ部へ導入される記録材は常にシワの
ないフィルム面に対応密着してニップ部をフィルムと一
緒に移動通過する。従ってシワのあるフィルム面に被加
熱材が密着して、或いはシワのあるフィルムがニツプ部
を通過する事態を生じることによる加熱ムラ・定着ムラ
の発生、フィルム面の折れすじの発生等が防止される。
Thereby, the recording material introduced into the nip portion always moves and passes through the nip portion together with the film in close contact with the film surface without wrinkles. Therefore, the occurrence of uneven heating and fixing due to the situation in which the material to be heated adheres to the wrinkled film surface or the occurrence of the situation where the wrinkled film passes through the nip portion, generation of folding lines on the film surface, and the like are prevented. You.
(5)圧接部材はフィルムを挟んで加熱体に圧接しつつ
駆動源により回転駆動されてフィルム内面を加熱体面に
摺動させつつフィルムを所定の速度で記録材搬送方向へ
移動駆動させる回転体(フィルムの圧接と駆動の両機能
を有するローラ体又はエンドレスベルト体)とすること
で、フィルムにかかる寄り力を低減することが可能とな
ると共に、該回転体の位置や該回転体を駆動するための
ギアの位置精度を向上させることができ、装置構成が簡
略化され、安価で信頼性の高い装置とすることができ、
また使用するエンドレスフィルムの全周長を短いものと
することができる。
(5) A rotating member that is rotated by a drive source while being pressed against a heating body with the film interposed therebetween, and that drives the film to move at a predetermined speed in the recording material conveying direction while sliding the inner surface of the film against the heating body surface. A roller body or an endless belt body having both functions of pressing and driving the film), it is possible to reduce the biasing force applied to the film and to drive the position of the rotating body and the rotating body. Gear position accuracy can be improved, the device configuration can be simplified, and an inexpensive and highly reliable device can be obtained.
Further, the entire circumference of the endless film used can be reduced.
(実施例) 図面は本発明の一実施例装置(画像加熱定着装置10
0)を示したものである。
(Embodiment) The drawings show an apparatus according to an embodiment of the present invention (image heating fixing device 10).
0).
(1)装置100の全体的概略構造 第1図は装置100の横断面図、第2図は縦断面図、第
3図・第4図は装置の右側面図と左側面図、第5図は要
部の分解斜視図である。
(1) Overall schematic structure of the apparatus 100 FIG. 1 is a transverse sectional view of the apparatus 100, FIG. 2 is a longitudinal sectional view, FIGS. 3 and 4 are right and left side views of the apparatus, and FIG. FIG. 3 is an exploded perspective view of a main part.
1は板金製の横断面上向きチャンネル(溝)形の横長
の装置フレーム(底板)、2・3はこの装置フレーム1
の左右両端部に該フレーム1に一体に具備させた左側壁
板と右側壁板、4は装置の上カバーであり、左右の側壁
板2・3の上端部間にはめ込んでその左右端部を夫々左
右側壁板2・3に対してねじ5で固定される。ねじ5を
ゆるめ外すことで取り外すことができる。
Reference numeral 1 denotes a horizontally long apparatus frame (bottom plate) having an upward channel (groove) in cross section made of sheet metal;
The left side wall plate and the right side wall plate integrally provided with the frame 1 at both left and right end portions thereof are upper covers of the apparatus, and are fitted between the upper end portions of the left and right side wall plates 2 and 3 so that the left and right end portions are formed. The left and right side wall plates 2 and 3 are fixed with screws 5 respectively. It can be removed by loosening the screw 5.
6・7は左右の各側壁板2・3の略中央部面に対称に
形成した縦方向の切欠き長穴、8・9はその各長穴6・
7の下端部に嵌係合させた左右一対の軸受部材である。
Reference numerals 6 and 7 denote longitudinally-notched elongated holes formed symmetrically in the substantially central surfaces of the left and right side wall plates 2 and 3, and 8 and 9 denote respective elongated holes 6.
7 is a pair of left and right bearing members fitted and engaged with the lower end of the bearing 7.
10は後述する加熱体との間でフィルムを挟んでニップ
部を形成し、フィルムを駆動する回転体(駆動回転部
材)としてのフィルム加圧ローラ(圧接ローラ、バック
アップローラ)であり、中心軸11と、この軸に外装した
シリコンゴム等の離型性のよいゴム弾性体からなるロー
ラ部12とからなり、中心軸11の左右端部を夫々前記左右
の軸受部材8・9に回転自由に軸受支持させてある。
Reference numeral 10 denotes a film pressing roller (pressing roller, backup roller) serving as a rotating body (drive rotating member) that forms a nip portion with a film interposed between the heating body and a heating body, which will be described later. And a roller portion 12 made of a rubber elastic material having good releasability, such as silicone rubber, provided on the shaft. The left and right ends of the central shaft 11 are rotatably mounted on the left and right bearing members 8 and 9 respectively. It is supported.
13は、板金製の横長のステーであり、後述するフィル
ム21の内面ガイド部材と、後述する加熱体19・断熱部材
20の支持・補強部材を兼ねる。
Reference numeral 13 denotes a horizontally long stay made of sheet metal, and an inner surface guide member of a film 21 described later, a heating body 19 and a heat insulating member described later.
Also serves as 20 supporting and reinforcing members.
このステー13は、横長の平な底面部14と、この底面部
14の長手両辺から夫々一連に立ち上がらせて具備させた
横断面外向き円弧カーブの前壁板15と後壁板16と、底面
部14の左右両端部から夫々外方へ突出させた左右一対の
水平張り出しラグ部17・18を有している。
The stay 13 has a horizontally long flat bottom portion 14 and this bottom portion.
A front wall plate 15 and a rear wall plate 16 having a cross section outwardly curved arc provided by being sequentially raised from both longitudinal sides of 14 respectively, and a pair of right and left protruding outward from both right and left ends of the bottom portion 14 respectively. It has horizontal overhang lugs 17 and 18.
19は後述する構造(第6図)を有する横長の低熱容量
線状加熱体であり、横長の断熱部材20に取付け支持させ
てあり、この断熱部材20を加熱体19側を下向きにして前
記ステー13の横長底面部14の下面に並行に一体に取付け
支持させてある。
Reference numeral 19 denotes a horizontally long low-heat-capacity linear heating element having a structure to be described later (FIG. 6), which is attached to and supported by a horizontally long heat-insulating member 20. 13 is attached to and supported by the lower surface of the horizontally long bottom surface portion 14 in parallel.
21はエンドレスの耐熱性フィルムであり、加熱体19・
断熱部材20を含むステー13に外嵌させてある。このエン
ドレスの耐熱性フィルム21の内周長と、加熱体19・断熱
部材20を含むステー13の外周長はフィルム21の方を例え
ば3mmほど大きくしてあり、従ってフィルム21は加熱体1
9・断熱部材20を含むステー13に対して周長が余裕をも
ってルーズに外嵌している。
21 is an endless heat-resistant film,
It is externally fitted to the stay 13 including the heat insulating member 20. The inner peripheral length of the endless heat-resistant film 21 and the outer peripheral length of the stay 13 including the heating element 19 and the heat insulating member 20 are larger than the film 21 by, for example, about 3 mm.
9. The circumference of the stay 13 including the heat insulating member 20 is loosely fitted with a margin.
22・23はフィルム21を加熱体19・断熱部材20を含むス
テー13に外嵌した後にステー13の左右端部の各水平張り
出しラグ部17・18に対して嵌着して取付け支持させた左
右一対のフィルム端部規制フランジ部材である。後述す
るように、この左右一対の各フランジ部材22・23の鍔座
の内面22a・23a間の間隔寸法G(第8図)はフィルム21
の幅寸法C(同)よりもやや大きく設定してある。
22 and 23 are formed by externally fitting the film 21 to the stay 13 including the heating element 19 and the heat insulating member 20 and then fitting and supporting the horizontally protruding lugs 17 and 18 at the left and right ends of the stay 13 It is a pair of film end regulating flange members. As will be described later, the distance G (FIG. 8) between the inner surfaces 22a and 23a of the flange seats of the pair of left and right flange members 22 and 23 is
Is set slightly larger than the width dimension C (the same).
24・25はその左右一対の各フランジ部材22・23の外面
から外方へ突出させた水平張り出しラグ部であり、前記
ステー13側の外向き水平張り出しラグ部17・18は夫々こ
のフランジ部材22・23の上記水平張り出しラグ部24・25
の肉厚内に具備させた差し込み用穴部に十分に嵌入して
いて左右の各フランジ部材22・23をしっかりと支持して
いる。
Reference numerals 24 and 25 denote horizontal overhang lugs protruding outward from the outer surfaces of the pair of left and right flange members 22 and 23, and the outward horizontal overhang lugs 17 and 18 on the stay 13 side are respectively provided by the flange members 22 and 23.・ 23 horizontal overhang lugs 24 ・ 25
It is fully fitted in the insertion hole provided in the wall thickness of the first member, and firmly supports the left and right flange members 22 and 23.
装置の組み立ては、左右の側壁板2・3間から上カバ
ー4を外した状態において、軸11の左右端部側に予め左
右の軸受部材8・9を嵌着したフィルム加圧ローラ10の
その左右の軸受部材8・9を左右側壁板2・3の縦方向
切欠き長穴6・7に上端開放部から嵌係合させて加圧ロ
ーラ10を左右側壁板2・3間に入れ込み、左右の軸受部
材8・9が長穴6・7の下端部に受け止められる位置ま
で下ろす(落し込み式)。
The assembling of the apparatus is carried out by removing the upper cover 4 from the space between the left and right side walls 2 and 3 and setting the left and right bearing members 8 and 9 on the left and right end portions of the shaft 11 in advance. The left and right bearing members 8 and 9 are fitted into the longitudinal notches 6 and 7 of the left and right side wall plates 2.3 and 3 from the upper end open portions, and the pressure roller 10 is inserted between the left and right side wall plates 2 and 3. The bearing members 8 and 9 are lowered to a position where they can be received by the lower ends of the elongated holes 6 and 7 (drop-down type).
次いで、ステー13、加熱体19、断熱部材20、フィルム
21、左右のフランジ部材22・23を図のような関係に予め
組み立てた中間組立て体を、加熱体19側を下向きにし
て、かつ断熱部材20の左右の外方突出端と左右のフラン
ジ部材22・23の水平張り出しラグ部24・25を夫々左右側
壁板2・3の縦方向切欠き長穴6・7に上端開放部から
嵌係合させて左右側壁板2・3間に入れ込み、下向きの
加熱体19がフィルム21を挟んで先に組み込んである加圧
ローラ10の上面に当って受け止められるまで下ろす(落
し込み式)。
Next, a stay 13, a heating body 19, a heat insulating member 20, a film
21, an intermediate assembly in which the left and right flange members 22 and 23 are pre-assembled in the relationship shown in the figure, with the heating body 19 side facing downward, and the left and right outwardly projecting ends of the heat insulating member 20 and the left and right flange members 22. The 23 horizontal overhang lugs 24 and 25 are fitted into the longitudinal cutout slots 6 and 7 of the left and right side wall plates 2.3 and 3 from the upper end open portions, and are inserted between the left and right side wall plates 2 and 3 to face downward. The heating body 19 is lowered until it is received by hitting the upper surface of the pressure roller 10 previously incorporated with the film 21 interposed therebetween (drop-down type).
そして左右側壁板2・3の外側に長穴6・7を通して
突出している、左右の各フランジ部材22・23のラグ部24
・25の上に夫々コイルばね26・27をラグ部上面に設けた
支え凸起で位置決めさせて縦向きにセットし、上カバー
4を、該上カバー4の左右端部側に夫々設けた外方張り
出しラグ部28・29を上記セットしたコイルばね26・27の
上端に夫々対応させて各コイルばね26・27をラグ部24・
28、25・29間に押し縮めながら、左右の側壁板2・3の
上端部間の所定の位置まで嵌め入れてねじ5で左右の側
壁板2・3間に固定する。
The lugs 24 of the left and right flange members 22 and 23 protrude outside the left and right side wall plates 2 and 3 through the elongated holes 6 and 7.
・ Coil springs 26 and 27 are positioned vertically on support lugs provided on the upper surface of the lug, and set vertically, and upper cover 4 is provided on the left and right end sides of upper cover 4. Each of the coil springs 26, 27 is attached to the lug 24, with the overhang lugs 28, 29 corresponding to the upper ends of the set coil springs 26, 27, respectively.
While being compressed between 28, 25, and 29, they are fitted to a predetermined position between the upper end portions of the left and right side wall plates 2, 3 and fixed between the left and right side wall plates 2, 3 with screws 5.
これによりコイルばね26・27の押し縮め反力で、ステ
ー13、加熱体19、断熱部材20、フィルム21、左右のフラ
ンジ部材22・23の全体が下方へ押圧付勢されて加熱体19
と加圧ローラ10とがフィルム21を挟んで長手各部略均等
に例えば総圧4〜7kgの当接圧をもって圧接した状態に
保持される。
As a result, the stay 13, the heating element 19, the heat insulating member 20, the film 21, and the entire left and right flange members 22 and 23 are pressed downward by the reaction force of the coil springs 26 and 27, and the heating element 19 is pressed.
The pressure roller 10 and the pressure roller 10 are held in a state in which they are pressed almost uniformly across the film 21 with a contact pressure of, for example, a total pressure of 4 to 7 kg.
30・31は左右の側壁板2・3の外側に長穴6・7を通
して突出している断熱部材20の左右両端部に夫々嵌着し
た、加熱体19に対する電力供給用の給電コネクタであ
る。
Reference numerals 30 and 31 denote power supply connectors for supplying electric power to the heating element 19, which are fitted respectively to the left and right ends of the heat insulating member 20 protruding outside the left and right side wall plates 2 and 3 through the long holes 6 and 7.
32は装置フレーム1の前面壁に取付けて配設した被加
熱材入口ガイドであり、装置へ導入される被加熱材とし
ての、顕画像(粉体トナー像)Taを支持する記録材シー
トP(第7図)をフィルム21を挟んで圧接している加熱
体19と加圧ローラ10とのニップ部(加熱定着部)Nのフ
ィルム21と加圧ローラ10との間に向けて案内する。
Reference numeral 32 denotes a heated material entrance guide which is mounted on the front wall of the apparatus frame 1 and supports a visible image (powder toner image) Ta as a heated material introduced into the apparatus. 7) is guided between the film 21 and the pressure roller 10 in the nip portion (heat fixing portion) N between the heating body 19 and the pressure roller 10 which are pressed against each other with the film 21 interposed therebetween.
33は装置フレーム1の後面壁に取付けて配設した被加熱
材出口ガイド(分離ガイド)であり、上記ニップ部を通
過して出た記録シートを下側の排出ローラ34と上側のピ
ンチコロ38とのニップ部に案内する。
Reference numeral 33 denotes a heated material exit guide (separation guide) attached to the rear wall of the apparatus frame 1 for discharging the recording sheet passing through the nip portion to a lower discharge roller 34 and an upper pinch roller 38. To the nip.
排出ローラ34はその軸35の左右両端部を左右の側壁板
2・3に設けた軸受36・37間に回転自由に軸受支持させ
てある。ピンチコロ38はその軸39を上カバー4の後面壁
の一部を内側に曲げて形成したフック部40に受け入れさ
せて自重と押しばね41とにより排出ローラ34の上面に当
接させてある。このピンチコロ38は排出ローラ34の回転
駆動に従動回転する。
The discharge roller 34 is rotatably supported at both left and right ends of a shaft 35 between bearings 36 and 37 provided on the left and right side walls 2 and 3. The pinch roller 38 has its shaft 39 received by a hook 40 formed by bending a part of the rear wall of the upper cover 4 inward, and is brought into contact with the upper surface of the discharge roller 34 by its own weight and a pressing spring 41. The pinch roller 38 is driven to rotate by the rotation of the discharge roller 34.
G1は、右側壁板3から外方へ突出させたローラ軸11の
右端に固着した第1ギア、G3はおなじく右側壁板3から
外方へ突出させた排出ローラ軸35の右端に固着した第3
ギア、G2は右側壁板3の外面に枢着して設けた中継ギア
としての第2ギアであり、上記の第1ギアG1と第3ギア
G3とに噛み合っている。
G1 is a first gear fixed to the right end of the roller shaft 11 projecting outward from the right side wall plate 3, and G3 is similarly a first gear fixed to the right end of the discharge roller shaft 35 projecting outward from the right side wall plate 3. 3
The gear G2 is a second gear as a relay gear provided by being pivotally attached to the outer surface of the right side wall plate 3. The first gear G1 and the third gear G2 are provided.
Meshing with G3.
第1ギアG1は不図示の駆動源機構の駆動ギアG0から駆
動力を受けて加圧ローラ10が第1図上反時計方向に回転
駆動され、それに連動して第1ギアG1の回転力が第2ギ
アG2を介して第3ギアG3へ伝達され排出ローラ34も第1
図上反時計方向に回転駆動される。
The first gear G1 receives a driving force from a driving gear G0 of a driving source mechanism (not shown), and the pressing roller 10 is driven to rotate counterclockwise in FIG. 1, and in conjunction therewith, the rotating force of the first gear G1 is reduced. The output roller 34 transmitted to the third gear G3 via the second gear G2 is also the first gear G3.
It is driven to rotate counterclockwise in the figure.
(2)動作 エンドレスの耐熱性フィルム21は非駆動時においては
第6図の要部部分拡大図のように加熱体19と加圧ローラ
10とのニップ部Nに挟まれている部分を除く残余の大部
分の略全周長部分がテンションフリーである。
(2) Operation When the endless heat-resistant film 21 is not driven, the heating element 19 and the pressure roller as shown in FIG.
Except for the portion sandwiched between the nip portion N and the portion 10, almost the entire circumference of the remaining portion is tension-free.
第1ギアG1に駆動源機構の駆動ギアG0から駆動が伝達
されて加圧ローラ10が所定の周速度で第7図上反時計方
向へ回転駆動されると、ニップ部Nにおいてフィルム21
に回転加圧ローラ10との摩擦力で送り移動力がかかり、
エンドレスの耐熱性フィルム21が加圧ローラ10の回転周
速と略同速度をもってフィルム内面が加熱体19面を摺動
しつつ時計方向Aに回動移動駆動される。
When the drive is transmitted from the drive gear G0 of the drive source mechanism to the first gear G1 and the pressure roller 10 is driven to rotate in the counterclockwise direction in FIG.
Feed force is applied by the frictional force with the rotating pressure roller 10,
The endless heat-resistant film 21 is rotationally driven in the clockwise direction A while the inner surface of the film slides on the surface of the heating body 19 at substantially the same rotational speed as the rotational speed of the pressure roller 10.
このフィルム21の駆動状態においてはニップ部Nより
もフィルム回動方向上流側のフィルム部分に引き寄せ力
fが作用することで、フィルム21は第7図に実線で示し
たようにニップ部Nよりもフイルム回動方向上流側であ
って該ニップ部近傍のフイルム内面ガイド部分、即ちフ
ィルム21を外嵌したステー13のフィルム内面ガイドとし
ての外向き円弧カーブ前面板15の略下半面部分に対して
接触して摺動を生じながら回動する。
In the driving state of the film 21, the pulling force f acts on the film portion upstream of the nip portion N in the film rotation direction, so that the film 21 is more than the nip portion N as shown by the solid line in FIG. Contacting the film inner surface guide portion near the nip portion on the upstream side in the film rotation direction, that is, the substantially lower half surface portion of the outwardly curved arc front plate 15 as the film inner surface guide of the stay 13 on which the film 21 is fitted. Then, it rotates while sliding.
その結果、回動フィルム21には上記の前面板15との接
触摺動部の始点部Oからフィルム回動方向下流側のニッ
プ部Nにかけてのフィルム部分Bにテンシヨンが作用し
た状態で回動することで、少なくともそのフィルム部分
面、即ちニップ部Nの記録材シート進入側近傍のフィル
ム部分面B、及びニップ部Nのフィルム部分についての
シワの発生が上記のテンションの作用により防止され
る。
As a result, the rotating film 21 rotates in a state where tension is applied to the film portion B from the starting point O of the contact sliding portion with the front plate 15 to the nip portion N on the downstream side in the film rotating direction. As a result, at least the film portion surface, that is, the film portion surface B near the recording material sheet entry side of the nip portion N and the film portion of the nip portion N are prevented from wrinkling by the action of the above-described tension.
特に前面板15とニップ部Nの間にフィルム21をガイド
しない非ガイド部があるので、前面板15でテンションの
作用を受けたフィルム21はこの非ガイド部で何の障害も
無く引き伸ばされることができニップ部Nに入る前にフ
ィルム21のシワをより確実に防止することができる。
In particular, since there is a non-guide portion that does not guide the film 21 between the front plate 15 and the nip portion N, the film 21 subjected to tension by the front plate 15 can be stretched without any obstacle by the non-guide portion. The wrinkles of the film 21 can be more reliably prevented before entering the nip portion N.
そして上記のフィルム駆動と、加熱体19への通電を行
わせた状態において、入口ガイド32に案内されて被加熱
材としての未定着トナー像Taを担持した記録材シートP
がニップ部Nの回動フィルム21と加圧ローラ10との間に
像担持面上向きで導入されると記録材シートPはフィル
ム21の面に密着してフィルム21と一緒にニップ部Nを移
動通過していき、その移動通過過程でニップ部Nにおい
てフィルム内面に接している加熱体19の熱エネルギーが
フィルムを介して記録材シートPに付与されトナー画像
Taは軟化溶融像Tbとなる。
Then, in the state where the above-described film drive and the energization of the heating element 19 are performed, the recording material sheet P carrying the unfixed toner image Ta as the material to be heated is guided by the entrance guide 32.
When the recording material sheet P is introduced between the rotating film 21 of the nip portion N and the pressure roller 10 in an upward direction, the recording material sheet P comes into close contact with the surface of the film 21 and moves along the nip portion N together with the film 21. The heat energy of the heating element 19 that is in contact with the inner surface of the film at the nip portion N is applied to the recording material sheet P via the film in the process of moving and passing the toner image.
Ta becomes a softened and fused image Tb.
ニップ部Nを通過した記録材シートPはトナー温度が
ガラス転移点より大なる状態でフィルム21面から離れて
出口ガイド33で排出ローラ34とピンチコロ38との間に案
内されて装置外へ送り出される。記録材シートPがニッ
プ部Nを出てフィルム21面から離れて排出ローラ34へ至
るまでの間に軟化・溶融トナー像Tbは冷却して固化像化
Tcして定着する。
The recording material sheet P that has passed through the nip N is separated from the surface of the film 21 with the toner temperature higher than the glass transition point, guided by the exit guide 33 between the discharge roller 34 and the pinch roller 38, and sent out of the apparatus. . The softened / fused toner image Tb is cooled and solidified while the recording material sheet P exits the nip portion N and leaves the film 21 to reach the discharge roller 34.
Tc and fix.
上記においてニップ部Nへ導入された記録材シートP
は前述したようにテンションが作用していてシワのない
フィルム部分面に常に対応密着してニップ部Nをフィル
ム21と一緒に移動するのでシワのあるフィルムがニップ
部Nを通過する事態を生じることによる加熱ムラ・定着
ムラの発生、フィルム面の折れすじを生じない。
Recording material sheet P introduced into nip N in the above
As described above, the tension acts on the film portion surface without wrinkles, and the nip portion N moves together with the film 21 in close contact with the film portion 21. Therefore, a situation in which the wrinkled film passes through the nip portion N may occur. This causes no uneven heating and uneven fixing, and no breakage of the film surface.
フィルム21は被駆動時も駆動時もその全周長の一部N
又はB・Nにしかテンションが加わらないから、即ち非
駆動時(第6図)においてはフィルム21はニップ部Nを
除く残余の大部分の略全周長部分がテンションフリーで
あり、駆動時もニップ部Nと、そのニップ部Nの記録材
シート進入側近傍部のフィルム部分Bについてのみテン
ションが作用し残余の大部分の略全周長部分がテンショ
ンフリーであるから、また全体に周長の短いフィルムを
使用できるから、フィルム駆動のために必要な駆動トル
クは小さいものとなり、フィルム装置構成、部品、駆動
系構成は簡略化・小型化・低コスト化される。
The film 21 has a part N of its entire circumference both when driven and when driven.
Alternatively, since tension is applied only to BN, that is, when the film 21 is not driven (FIG. 6), the film 21 is substantially free of tension over the entire remaining portion except for the nip portion N. The tension acts only on the nip portion N and the film portion B near the recording material sheet entry side of the nip portion N, and almost the entire remaining circumferential portion is tension-free. Since a short film can be used, the driving torque required for driving the film is small, and the film device configuration, components, and drive system configuration are simplified, downsized, and reduced in cost.
またフィルム21の非駆動時(第6図)も駆動時(第7
図)もフィルム21には上記のように全周長の一部N又は
B・Nにしかテンションが加わらないので、フィルム駆
動時にフィルム21にフィルム幅方向の一方側Q(第2
図)、又は他方側Rへの寄り移動を生じても、その寄り
力は小さいものである。
When the film 21 is not driven (FIG. 6), it is also driven (FIG. 7).
As shown in the figure, since tension is applied only to a part N or BN of the entire circumferential length of the film 21 as described above, the film 21 is driven on one side Q (second
(See FIG. 2), or even if a shift to the other side R occurs, the shift force is small.
そのためフィルム21が寄り移動Q又はRしてその左端
縁が左側フランジ部材22のフィルム端部規制面としての
鍔座内面22a、或は右端縁が右側フランジ部材23の鍔座
内面23aに押し当り状態になってもフィルム寄り力が小
さいからその寄り力に対してフィルムの剛性が十分に打
ち勝ちフィルム端部が座屈・破損するなどのダメージを
生じない。そしてフィルムの寄り規制手段は本実施例装
置のように簡単なフランジ部材22・23で足りるので、こ
の点でも装置構成の簡略化、小型化・低コスト化がなさ
れ、安価で信頼性の高い装置を構成できる。
Therefore, the film 21 is shifted Q or R, and the left edge of the film 21 is pressed against the flange seat inner surface 22a as the film end regulating surface of the left flange member 22, or the right edge is pressed against the flange seat inner surface 23a of the right flange member 23. However, since the film deviating force is small, the rigidity of the film sufficiently overcomes the deviating force, and no damage such as buckling or breakage of the film end occurs. Since the simple means for regulating the film deviation is only required by the flange members 22 and 23 as in the apparatus of this embodiment, the apparatus configuration can be simplified, miniaturized and reduced in cost in this respect as well, and the inexpensive and highly reliable apparatus can be used. Can be configured.
フィルム寄り規制手段としては本実施例装置の場合の
フランジ部材22・23の他にも、例えばフィルム21の端部
にエンドレスフィルム周方向に耐熱性樹脂から成るリブ
を設け、このリブを規制してもよい。
As the film deviation regulating means, in addition to the flange members 22 and 23 in the case of the apparatus of the present embodiment, for example, a rib made of a heat-resistant resin is provided at the end of the film 21 in the circumferential direction of the endless film, and the rib is regulated. Is also good.
更に、使用フィルム21としては上記のように寄り力が
低下する分、剛性を低下させることができるので、より
薄肉で熱容量が小さいものを使用して装置のクイックス
タート性を向上させることができる。
Further, as the film 21 to be used, the rigidity can be reduced as much as the biasing force is reduced as described above, so that a thinner film having a smaller heat capacity can be used to improve the quick start property of the apparatus.
(3)フィルム21について。(3) Film 21
フィルム21は熱容量を小さくしてクイックスタート性
を向上させるために、フィルム21の膜厚Tは総厚100μ
m以下、好ましくは40μm以下、20μm以上の耐熱性・
離形性・強度・耐久性等のある単層或は複合層フィルム
を使用できる。
The film 21 has a total thickness of 100 μm in order to reduce the heat capacity and improve the quick start property.
m, preferably 40 μm or less, heat resistance of 20 μm or more.
A single layer or composite layer film having releasability, strength, durability and the like can be used.
例えば、ポリイミド・ポリエーテルイミド(PEI)・
ポリエーテルサルホン(PES)・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(PF
A)・ポリエーテルエーテルケトン(PEEK)・ポリパラ
バン酸(PPA)、或いは複合層フィルム例えば20μm厚
のポリイミド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・FEP等のフッ素樹脂・
シリコン樹脂等、更にはそれに導電材(カーボンブラッ
ク・グラファイト・導電性ウイスカなど)を添加した離
型性コート層を10μm厚に施したものなど。
For example, polyimide / polyetherimide (PEI)
Polyethersulfone (PES) / tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PF
A)-Polyetheretherketone (PEEK)-Polyparabanic acid (PPA), or PTFE on at least the image contacting surface side of a composite film such as a 20 µm thick polyimide film
(Tetrafluoroethylene resin), fluororesin such as PAF, FEP, etc.
Silicone resin, etc., and a 10 μm thick release coating layer to which conductive materials (carbon black, graphite, conductive whiskers, etc.) are added.
(4)加熱体19・断熱部材20について。(4) Heating body 19 and heat insulating member 20.
加熱体19は前述第13図例装置の加熱体54と同様に、ヒ
ータ基板19a(第6図参照)・通電発熱抵抗体(発熱
体)19b・表面保護層19c・検温素子19d等よりなる。
The heating element 19 includes a heater substrate 19a (see FIG. 6), a current-generating heating resistor (heating element) 19b, a surface protection layer 19c, a temperature measuring element 19d, and the like, similarly to the heating element 54 of the apparatus shown in FIG.
ヒータ基板19aは耐熱性、絶縁性、低熱容量・高熱伝
導性の部材であり、例えば、厚み1mm・巾10mm・長さ240
mmのアルミナ基板である。
The heater substrate 19a is a member having heat resistance, insulation, low heat capacity and high thermal conductivity, for example, a thickness of 1 mm, a width of 10 mm, and a length of 240 mm.
mm alumina substrate.
発熱体19bはヒータ基板19aの下面(フィルタ21との対
面側)の略中央部に長手に沿って、例えば、Ag/Pd(銀
パラジウム)、Ta2N、RuO2等の電気抵抗材料を厚み約10
μm・巾1〜3mmの線状もしくは細帯状にスクリーン印
刷等により塗工し、その上に表面保護層19cとして耐熱
ガラスを約10μmコートしたものである。
The heating element 19b is made of an electric resistance material such as Ag / Pd (silver palladium), Ta 2 N, or RuO 2 along the length substantially at the center of the lower surface of the heater substrate 19a (facing the filter 21). About 10
It is coated by a screen printing or the like in a linear or narrow band having a width of 1 to 3 mm with a thickness of 1 to 3 mm, and a heat-resistant glass is coated thereon as a surface protective layer 19c by about 10 μm.
検温素子19dは一例としてヒータ基板19aの上面(発熱
体19bを設けた面とは反対側面)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。低熱容量のサーミスタなども使用で
きる。
The temperature measuring element 19d is, for example, a low-heat-capacity temperature measuring resistor such as a Pt film provided by applying a screen printing or the like to a substantially central portion of the upper surface of the heater substrate 19a (the side opposite to the surface on which the heating element 19b is provided). Body. A thermistor with a low heat capacity can also be used.
本例の加熱体19の場合は、線状又は細帯状をなす発熱
体19bに対し画像形成スタート信号により所定のタイミ
ングにて通電して発熱体19bを略全長にわたって発熱さ
せる。
In the case of the heating element 19 of the present example, the heating element 19b having a linear or narrow band shape is energized at a predetermined timing by an image forming start signal to cause the heating element 19b to generate heat over substantially the entire length.
通電はAC100Vであり、検温素子19c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供給電力を制御してい
る。
The energization is 100 V AC, and the supplied electric power is controlled by controlling the phase angle to be energized by an energization control circuit (not shown) including a triac according to the temperature detected by the temperature detecting element 19c.
加熱体19はその発熱体19bへの通電により、ヒータ基
板19a・発熱体19b・表面保護層19cの熱容量が小さいの
で加熱体表面が所要の定着温度(例えば140〜200℃)ま
で急速に温度上昇する。
The heating element 19 has a small heat capacity of the heater substrate 19a, the heating element 19b, and the surface protection layer 19c due to the current supply to the heating element 19b, so that the temperature of the heating element surface rapidly rises to a required fixing temperature (for example, 140 to 200 ° C.). I do.
そしてこの加熱体19に接する耐熱性フィルム21も熱容
量が小さく、加熱体19側の熱エネルギーが該フィルム21
を介して該フィルムに圧接状態の記録材シートP側に効
果的に伝達されて画像の加熱定着が実行される。
The heat capacity of the heat-resistant film 21 in contact with the heating element 19 is also small, and the heat energy of the heating element 19 is
The heat transfer is effectively transmitted to the recording material sheet P side in pressure contact with the film through the film, and the image is heated and fixed.
上記のように加熱体19と対向するフィルムの表面温度
は短時間にトナーの融点(又は記録材シート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、クイッ
クスタート性に優れ、加熱体19をあらかじめ昇温させて
おく、いわゆるスタンバイ温調の必要がなく、省エネル
ギーが実現でき、しかも機内昇温も防止できる。
As described above, the surface temperature of the film facing the heating element 19 rises to a sufficiently high temperature relative to the melting point of the toner (or the temperature at which the toner can be fixed to the recording material sheet P) in a short time, so that quick start performance is excellent. In addition, there is no need to raise the temperature of the heating element 19 in advance, that is, so-called standby temperature control, so that energy can be saved and the temperature inside the apparatus can be prevented.
断熱部材20は加熱体19を断熱して発熱を有効に使うよ
うにするもので、断熱性・高耐熱性を有する、例えばPP
S(ポリフェニレンサルファイド)・PAI(ポリアミドイ
ミド)・PI(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である。
The heat insulating member 20 insulates the heating element 19 to use heat effectively, and has heat insulating property and high heat resistance, for example, PP
High heat resistant resin such as S (polyphenylene sulfide), PAI (polyamide imide), PI (polyimide), PEEK (polyetheretherketone), liquid crystal polymer, etc.
(5)フィルム幅Cとニップ長Dについて。(5) About film width C and nip length D.
第8図の寸法関係図のように、フィルム21の幅寸法を
Cとし、フィルム21を挟んで加熱体19と回転体としての
加圧ローラ10の圧接により形成されるニップ長寸法をD
としたとき、C<Dの関係構成に設定するのがよい。
As shown in the dimensional relationship diagram of FIG. 8, the width of the film 21 is C, and the length of the nip formed by pressing the heating member 19 and the pressing roller 10 as a rotating member is D with the film 21 interposed therebetween.
In this case, it is preferable to set a relational configuration of C <D.
即ち上記とは逆にC≧Dの関係構成でローラ10により
フィルム21の搬送を行なうと、ニップ長Dの領域内のフ
ィルム部分が受けるフィルム搬送力(圧接力)と、ニッ
プ長Dの領域外のフィルム部分が受けるフィルム搬送力
とが、前者のフィルム部分の内面は加熱体19の面に接し
て摺動搬送されるのに対して後者のフィルム部分の内面
は加熱体19の表面とは材質の異なる断熱部材20の面に接
して摺動搬送されるので、大きく異なるためにフィルム
21の幅方向両端部分にフィルム搬送過程でシワや折れ等
の破損を生じるおそれがある。
That is, when the film 21 is conveyed by the roller 10 in the configuration of C ≧ D, the film conveyance force (pressing force) received by the film portion in the nip length D region and the nip length D out of the nip length D region are reversed. The film transport force received by the film portion of the former is that the inner surface of the former film portion is slid and transported in contact with the surface of the heating body 19, whereas the inner surface of the latter film portion is the material of the surface of the heating body 19 Because it is slid and conveyed in contact with the surface of the heat insulating member 20 of different
There is a possibility that the film 21 may be damaged at the both ends in the width direction, such as wrinkles or breakage during the film transport process.
これに対してC<Dの関係構成に設定することで、フ
ィルム21の幅方向全長域Cの内面が加熱体19の長さ範囲
D内の面に接して該加熱体表面を摺動して搬送されるの
でフィルム幅方向全長域Cにおいてフィルム搬送力が均
一化するので上記のようなフィルム端部破損トラブルが
回避される。
On the other hand, by setting the relationship of C <D, the inner surface of the entire length region C in the width direction of the film 21 comes into contact with the surface within the length range D of the heating member 19 and slides on the surface of the heating member. Since the film is conveyed, the film conveying force becomes uniform in the entire length region C in the film width direction, so that the above-described trouble of the film end portion damage is avoided.
また回転体として本実施例で使用した加圧ローラ10は
シリコンゴム等の弾性に優れたゴム材料製であるので、
加熱されると表面の摩擦係数が変化する。そのため加熱
体19の発熱体19bに関してその長さ範囲寸法をEとした
とき、その発熱体19bの長さ範囲Eに対応する部分にお
けるローラ10とフィルム21間の摩擦係数と、発熱体19b
の長さ範囲Eの外側に対応する部分におけるローラ10と
フィルム21間の摩擦係数は異なる。
Further, since the pressure roller 10 used in this embodiment as a rotating body is made of a rubber material having excellent elasticity such as silicon rubber,
When heated, the coefficient of friction of the surface changes. Therefore, when the length range dimension of the heating element 19b of the heating element 19 is E, the coefficient of friction between the roller 10 and the film 21 at a portion corresponding to the length range E of the heating element 19b and the heating element 19b
The coefficient of friction between the roller 10 and the film 21 in a portion corresponding to the outside of the length range E of the roller 10 is different.
しかし、E<C<Dの寸法関係構成に設定することに
より、発熱体19bの長さ範囲Eとフィルム幅Cの差を小
さくすることができるため発熱体19bの長さ範囲Eの内
外でのローラ10とフィルム21との摩擦係数の違いがフィ
ルムの搬送に与える影響を小さくすることができる。
However, by setting the dimensional relationship of E <C <D, the difference between the length range E of the heating element 19b and the film width C can be reduced. The effect of the difference in the coefficient of friction between the roller 10 and the film 21 on the transport of the film can be reduced.
これによって、ローラ10によりフィルム21を安定に駆
動することが可能となり、フィルム端部の破損を防止す
ることが可能となる。
As a result, the film 21 can be driven stably by the roller 10, and damage to the edge of the film can be prevented.
フィルム端部規制手段としてのフランジ部材22・23の
フィルム端部規制面22a・23aは加圧ローラ10の長さ範囲
内であり、フィルムが寄り移動してもフィルム端部のダ
メージ防止がなされる。
The film end regulating surfaces 22a and 23a of the flange members 22 and 23 as the film end regulating means are within the length range of the pressure roller 10, so that even if the film shifts, the film end is prevented from being damaged. .
(6)加圧ローラ10について。(6) Pressure roller 10
加熱体19との間にフィルム21を挟んでニップ部Nを形
成し、またフィルムを駆動する回転体としての加圧ロー
ラ10は、例えば、シリコンゴム等の離型性のよいゴム弾
性体からなるものであり、その形状は長手方向に関して
ストレート形状ものよりも、第9図(A)又は同図
(B)の誇張模型図のように逆クラウン形状、或いは逆
クラウン形状でその逆クラウンの端部をカット12aした
実質的に逆クラウン形状のものがよい。
The nip portion N is formed between the heating member 19 and the film 21. The pressure roller 10 as a rotating member for driving the film is made of, for example, a rubber elastic material having good releasability such as silicon rubber. The shape is an inverted crown shape as shown in an exaggerated model diagram of FIG. 9A or 9B, or an end portion of the inverted crown in an inverted crown shape, in comparison with a straight shape in the longitudinal direction. A substantially inverted crown shape obtained by cutting 12a is preferable.
逆クラウンの程度dはローラ10の有効長さHが例えば
230mmである場合において d=100〜200μm に設定するのがよい。
The effective length H of the roller 10 is, for example, the degree d of the inverted crown.
In the case of 230 mm, it is preferable to set d = 100 to 200 μm.
即ち、ストレート形状ローラの場合は部品精度のバラ
ツキ等により加熱体19とのニップ部Nにおいて該ローラ
によりフィルム21に加えられるフィルム幅方向に関する
圧力分布はフィルムの幅方向端部よりも中央部の方が高
くなることがあった。つまり該ローラによるフィルムの
搬送力はフィルム幅方向端部よりも中央部の方が大き
く、フィルム21には搬送に伴ない搬送力の小さいフィル
ム部分が搬送力の大きいフィルム部分へ寄り向う力が働
くので、フィルム端部側のフィルム部分がフィルム中央
部分へ寄っていきフィルムにシワを発生させることがあ
り、更にはニップ部Nに記録材シートPが導入されたと
きにはその記録材シートPにニップ部搬送通過過程でシ
ワを発生させることがある。
That is, in the case of a straight-shaped roller, the pressure distribution in the film width direction applied to the film 21 by the roller at the nip portion N with the heating element 19 due to variations in component accuracy or the like is closer to the central portion than to the edge in the width direction of the film. Was sometimes higher. In other words, the transporting force of the film by the rollers is greater at the center than at the ends in the width direction of the film, and a force acts on the film 21 such that the film portion having a smaller transporting force is directed toward the film portion having the greater transporting force. Therefore, the film portion on the side of the film edge may approach the center portion of the film and cause wrinkles in the film. Further, when the recording material sheet P is introduced into the nip portion N, the recording material sheet P In some cases, wrinkles may be generated during the transport passage.
これに対して加圧ローラ10を逆クラウンの形状にする
ことによって加熱体19とのニップ部Nにおいて該ローラ
によりフィルム21に加えられるフィルム幅方向に関する
圧力分布は上記の場合とは逆にフィルムの幅方向端部の
方が中央部よりも大きくなり、これによりフィルム21に
は中央部から両端側へ向う力が働いて、即ちシワのばし
作用を受けながらフィルム21の搬送がなされ、フィルム
のシワを防止できると共に、導入記録材シートPのシワ
発生を防止することが可能である。
On the other hand, by forming the pressure roller 10 in the shape of an inverted crown, the pressure distribution in the film width direction applied to the film 21 by the roller at the nip portion N with the heating element 19 is opposite to the above case. The widthwise end is larger than the center, whereby a force is applied to the film 21 from the center toward both ends, that is, the film 21 is conveyed while undergoing a wrinkle elongation action, and the film wrinkles are reduced. It is possible to prevent wrinkles from occurring on the introduced recording material sheet P while preventing the occurrence of wrinkles.
回転体としての加圧ローラ10は本実施例装置のように
加熱体19との間にフィルム21を挟んで加熱体19にフィル
ム21を圧接させると共に、フィルム21を所定速度に移動
駆動し、フィルム21との間に被加熱材としての記録材シ
ートPが導入されたときはその記録材シートPをフィル
ム21面に密着させて加熱体19に圧接させてフィルム21と
共に所定速度に移動駆動させる駆動部材とすることによ
りフィルムにかかる寄り力を低減することが可能となる
と共に、加圧ローラ10の位置や該ローラを駆動するため
のギアの位置精度を向上させることができる。
The pressurizing roller 10 as a rotating body presses the film 21 against the heating body 19 with the film 21 interposed therebetween with the heating body 19 as in the apparatus of the present embodiment, and drives and moves the film 21 to a predetermined speed, When a recording material sheet P as a material to be heated is introduced between the recording material sheet 21 and the recording material sheet 21, the recording material sheet P is brought into close contact with the surface of the film 21, pressed against the heating body 19, and driven to move at a predetermined speed together with the film 21. As a member, the biasing force applied to the film can be reduced, and the position of the pressure roller 10 and the position accuracy of the gear for driving the roller can be improved.
即ち、加熱体19に対してフィルム21又はフィルム21と
記録材シートPとを加圧圧接させる加圧機能と、フィル
ム21を移動駆動させる駆動機能とを夫々別々の加圧機能
回転体(必要な加圧力はこの回転体を加圧することによ
り得る)とフィルム駆動機能回転体で行なわせる構成の
ものとした場合には、加熱体19とフィルム駆動機能回転
体間のアライメントが狂った場合に薄膜のフィルム21に
は幅方向への大きな寄り力が働き、フィルム21の端部は
折れやシワ等のダメージを生じるおそれがある。
That is, the pressurizing function for pressurizing the film 21 or the film 21 and the recording material sheet P against the heating body 19 and the driving function for moving and driving the film 21 are separately provided by a pressurizing function rotating body (necessary (The pressing force is obtained by pressurizing the rotating body) and the film driving function rotating body is used. If the alignment between the heating body 19 and the film driving function rotating body is out of order, the thin film is formed. A large biasing force acts on the film 21 in the width direction, and the end of the film 21 may be damaged or broken.
またフィルムの駆動部材を兼ねる加圧回転体に加熱体
19と圧接に必要な加圧力をバネ等の押し付けにより加え
る場合には該回転体の位置や、該回転体を駆動するため
のギアの位置精度がだしずらい。
A heating element is added to the pressure rotating body that also serves as the film driving member.
When the pressing force required for the pressure contact with 19 is applied by pressing with a spring or the like, the position of the rotating body and the positional accuracy of the gear for driving the rotating body are difficult.
これに対して前記したように、加熱体19に定着時に必
要な加圧力を加え回転体たる加圧ローラ10により記録材
シートPをフィルム21を介して圧接させると共に、記録
材シートPとフィルム21の駆動をも同時に行なわせるこ
とにより、前記の効果を得ることができると共に、装置
の構成が簡略化され、安価で信頼性の高い装置を得るこ
とができる。
On the other hand, as described above, the recording material sheet P is brought into pressure contact with the heating member 19 via the film 21 by applying a pressing force required for fixing to the heating member 19 by the pressing roller 10 serving as a rotating member. The above-mentioned effects can be obtained by simultaneously performing the above driving, and the configuration of the device is simplified, so that an inexpensive and highly reliable device can be obtained.
なお、回転体としてはローラ10に代えて、第10図のよ
うに回動駆動されるエンドレスベルト10Aとすることも
できる。
Note that, instead of the roller 10, the rotating body may be an endless belt 10A that is driven to rotate as shown in FIG.
(7)記録材シート排出速度について。(7) Recording material sheet discharge speed.
ニップ部Nに導入された被加熱材としての記録材シー
トPの加圧ローラ10(回転体)による搬送速度、即ち該
ローラ10の周速度をV10とし、排出ローラ34の記録材シ
ート排出搬送速度、即ち該排出ローラ34の周速度をV34
としたとき、V10>V34の速度関係に設定するのがよい。
その速度差は数%例えば1〜3%程度の設定でよい。
The conveying speed of the recording material sheet P introduced into the nip portion N as the material to be heated by the pressing roller 10 (rotary body), that is, the peripheral speed of the roller 10 is V10, and the recording material sheet discharging and conveying speed of the discharging roller 34 That is, the peripheral speed of the discharge roller 34 is V34
, It is preferable to set the speed relationship of V10> V34.
The speed difference may be set at several%, for example, about 1 to 3%.
装置に導入して使用できる記録材シートPの最大幅寸
法をF(第8図参照)としたとき、フィルム21の幅寸法
Cとの関係において、F<Cの条件下ではV10≦V34とな
る場合にはニップ部Nと排出ローラ34との両者間にまた
がって搬送されている状態にある記録材シートPはニッ
プ部Nを通過中のシート部分は排出ローラ34によって引
っ張られる。
When the maximum width dimension of the recording material sheet P that can be introduced into the apparatus and used is F (see FIG. 8), V10 ≦ V34 under the condition of F <C in relation to the width dimension C of the film 21. In such a case, the sheet portion of the recording material sheet P which is being conveyed across both the nip portion N and the discharge roller 34 is pulled by the discharge roller 34 while passing through the nip portion N.
このとき、表面に離型性の良いPTFE等のコーティング
がなされているフィルム21は加圧ローラ10と同一速度で
搬送されている。一方記録材シートPにはローラ10によ
る搬送力の他に排出ローラ34による引っ張り搬送力も加
わるため、加圧ローラ10の周速よりも速い速度で搬送さ
れる。つまりニップ部Nにおいて記録材シートPとフィ
ルム21はスリップする状態を生じ、そのために記録材シ
ートPがニップ部Nを通過している過程で記録材シート
P上の未定着トナー像Ta(第7図)もしくは軟化・溶融
状態となったトナー像Tbに乱れを生じさせる可能性があ
る。
At this time, the film 21 whose surface is coated with PTFE or the like having good releasability is conveyed at the same speed as the pressure roller 10. On the other hand, the recording material sheet P is conveyed at a speed higher than the peripheral speed of the pressure roller 10 because a pulling conveyance force by the discharge roller 34 is applied in addition to the conveyance force by the roller 10. That is, in the nip portion N, the recording material sheet P and the film 21 slip, so that the unfixed toner image Ta (the seventh image) on the recording material sheet P while the recording material sheet P passes through the nip portion N is generated. There is a possibility that the toner image Tb in the softened / melted state may be disturbed.
そこで前記したように加圧ローラ10の周速度V10と排
出ローラ34の周速度V34を V10>V34 の関係に設定することで、記録材シートPとフィルム21
にはシートPに排出ローラ34による引っ張り力が作用せ
ず加圧ローラ10の搬送力のみが与えられるので、シート
Pとフィルム21間のスリップにもとずく上記の画像乱れ
の発生を防止することができる。
Therefore, as described above, by setting the peripheral speed V10 of the pressure roller 10 and the peripheral speed V34 of the discharge roller 34 in a relationship of V10> V34, the recording material sheet P and the film 21
Since the pulling force of the discharge roller 34 does not act on the sheet P and only the conveying force of the pressure roller 10 is applied to the sheet P, it is possible to prevent the occurrence of the above-described image disorder based on the slip between the sheet P and the film 21. Can be.
排出ローラ34は本実施例では像加熱装置100側に配設
具備させてあるが、像加熱装置100を組み込む画像形成
装置等本体側に具備させてもよい。
In this embodiment, the discharge roller 34 is provided on the image heating apparatus 100 side, but may be provided on the main body side such as an image forming apparatus in which the image heating apparatus 100 is incorporated.
(8)フィルム端部規制フランジ間隔について。(8) Regarding the film end regulating flange interval.
フィルム端部規制手段としての左右一対のフランジ部
22・23のフィルム端部規制面としての鍔座内面22a・23a
間の間隔寸法をG(第8図)としたとき、フィルム21の
幅寸法Cとの関係において、C<Gの寸法関係に設定す
るのがよい。例えばCを230mmとしたときGは1〜3mm程
度大きく設定するのである。
A pair of left and right flanges as film edge regulating means
Inner surface 22a / 23a of flange seat as film end regulating surface of 22/23
Assuming that the distance between the gaps is G (FIG. 8), the relationship with the width C of the film 21 is preferably set to C <G. For example, when C is set to 230 mm, G is set to be larger by about 1 to 3 mm.
即ち、フィルム21はニップ部Nにおいて例えば200℃
近い加熱体19の熱を受けて膨張して寸法Cが増加する。
従って常温時におけるフィルム21の幅寸法Cとフランジ
間隔寸法GをC=Gに設定してフィルム21の両端部をフ
ランジ部材22・23で規制するようにすると、装置稼働時
には上述したフィルムの熱膨張によりC>Gの状態を生
じる。フィルム21は例えば50μm程度の薄膜フィルムで
あるために、C>Gの状態ではフランジ部材22・23のフ
ィルム端部規制面22a・23aに対するフィルム端部当接圧
力(端部圧)が増大してそれに耐え切れずに端部折れ・
座屈等のダメージを受けることになると共に、フィルム
端部圧の増加によりフィルム21の端部とフランジ部材22
・23のフィルム端部規制面22a・23a間での摩擦力も増大
するためにフィルムの搬送力が低下してしまうことにも
なる。
That is, the film 21 is, for example, 200 ° C. in the nip portion N.
The dimension C increases due to expansion due to the heat of the nearby heating element 19.
Therefore, if the width C and the distance G between the flanges of the film 21 at normal temperature are set to C = G and both ends of the film 21 are regulated by the flange members 22 and 23, the above-mentioned thermal expansion of the film during the operation of the apparatus. Produces a state of C> G. Since the film 21 is, for example, a thin film having a thickness of about 50 μm, in the state of C> G, the contact pressure (end pressure) of the flange members 22 and 23 against the film end regulating surfaces 22 a and 23 a increases. The end breaks without being able to endure it
In addition to being damaged by buckling and the like, the end of the film 21 and the flange member 22
The frictional force between the film end regulating surfaces 22a and 23a of the film 23 also increases, so that the film conveying force is reduced.
C<Gの寸法関係に設定することによって、加熱によ
りフィルム21が膨張しても、膨張量以上の隙間(G−
C)をフィルム21の両端部とフランジ部材のフィルム端
部規制面22a・23a間に設けることによりフィルム21の両
端部が同時にフランジ部材のフィルム端部規制面22a・2
3aに当接することはない。
By setting the dimensional relationship of C <G, even if the film 21 expands due to heating, the gap (G−
C) is provided between both ends of the film 21 and the film end regulating surfaces 22a and 23a of the flange member so that both ends of the film 21 are simultaneously formed on the film end regulating surfaces 22a and 2a of the flange member.
No contact with 3a.
従ってフィルム21が熱膨張してもフィルム端部圧接力
は増加しないため、フィルム21の端部ダメージを防止す
ることが可能になると共に、フィルム駆動力も軽減させ
ることができる。
Therefore, even if the film 21 thermally expands, the end contact pressure of the film 21 does not increase, so that the end of the film 21 can be prevented from being damaged, and the driving force of the film 21 can be reduced.
(9)各部材間の摩擦係数関係について。(9) Relationship of friction coefficient between each member.
a.フィルム21の外周面に対するローラ(回転体)10表面
の摩擦係数をμ1、 b.フィルム21の内周面に対する加熱体19表面の摩擦係数
をμ2、 c.加熱体19表面に対するローラ10表面の摩擦係数をμ
3、 d.被加熱材としての記録材シートP表面に対するフィル
ム21の外周面の摩擦係数をμ4、 e.記録材シートP表面に対するローラ10表面の摩擦係数
をμ5、 f.装置に導入される記録材シートPの搬送方向の最大長
さ寸法を1、 g.装置が画像加熱定着装置として転写式画像形成装置に
組み込まれている場合において画像転写手段部から画像
加熱定着装置としての該装置のニップ部Nまでの記録材
シート(転写材)Pの搬送路長をl2、 とする。
a. The friction coefficient of the surface of the roller (rotary body) 10 against the outer peripheral surface of the film 21 is μ1, b. The friction coefficient of the surface of the heater 19 against the inner peripheral surface of the film 21 is μ2, c. Coefficient of friction μ
3. d. The coefficient of friction of the outer peripheral surface of the film 21 against the surface of the recording material sheet P as the material to be heated is μ4, e. The friction coefficient of the surface of the roller 10 against the surface of the recording material sheet P is μ5, and f. The maximum length dimension of the recording material sheet P in the transport direction is 1, g. When the apparatus is incorporated in a transfer type image forming apparatus as an image heating and fixing apparatus, the image transfer means unit transfers the image from the image transfer unit to the image heating and fixing apparatus. The transport path length of the recording material sheet (transfer material) P up to the nip portion N is l2.
而して、μ1とμ2との関係は μ1>μ2 の関係構成にする。 Thus, the relationship between μ1 and μ2 has a relationship of μ1> μ2.
即ち、この種のフィルム加熱方式の装置では前記μ4
とμ5との関係はμ4<μ5と設定されており、また画
像形成装置では前記1とl2との関係は1>l2となっ
ている。
That is, in this type of film heating system, the μ4
Is set to μ4 <μ5, and in the image forming apparatus, the relationship between 1 and l2 is 1> l2.
このとき、μ1≦μ2では加熱定着手段の断面方向で
フィルム21と記録材シートPがスリップ(ローラ10の周
速に対してフィルム21の搬送速度が遅れる)して、加熱
定着時に記録材シート上のトナー画像が乱されてしま
う。
At this time, when μ1 ≦ μ2, the film 21 and the recording material sheet P slip in the cross-sectional direction of the heat fixing means (the conveyance speed of the film 21 is delayed with respect to the peripheral speed of the roller 10), and the recording material sheet Is disturbed.
また、記録材シートPとフィルム21が一体でスリップ
(ローラ10の周速に対してフィルム21と記録材シートP
の搬送速度が遅れる)した場合には、転写式画像形成装
置の場合では画像転写手段部において記録材シート(転
写材)上にトナー画像が転写される際に、やはり記録材
上のトナー画像が乱されてしまう。
Further, the recording material sheet P and the film 21 slip together (the film 21 and the recording material sheet P with respect to the peripheral speed of the roller 10).
In the case of a transfer type image forming apparatus, when the toner image is transferred onto the recording material sheet (transfer material) in the image transfer unit, the toner image on the recording material is also transferred. It will be disturbed.
上記のようにμ1>μ2とすることにより、断面方向
でのローラ10に対するフィルム21と記録材シートPのス
リップを防止することができる。
By setting μ1> μ2 as described above, it is possible to prevent the film 21 and the recording material sheet P from slipping on the roller 10 in the cross-sectional direction.
また、フィルム21の幅寸法Cと、回転体としてのロー
ラ10の長さ寸法Hと、加熱体19の長さ寸法Dに関して、
C<H、C<Dという条件において、 μ1>μ3 の関係構成にする。
Further, regarding the width dimension C of the film 21, the length dimension H of the roller 10 as a rotating body, and the length dimension D of the heating body 19,
Under the conditions of C <H and C <D, the relational configuration of μ1> μ3 is established.
即ち、μ1≦μ3の関係では加熱定着手段の幅方向
で、フィルム21とローラ10がスリップし、その結果フィ
ルム21と記録材シートPがスリップし、加熱定着時に記
録材シート上のトナー画像が乱されてしまう。
That is, in the relationship of μ1 ≦ μ3, the film 21 and the roller 10 slip in the width direction of the heat fixing unit, and as a result, the film 21 and the recording material sheet P slip, and the toner image on the recording material sheet is disturbed during the heat fixing. Will be done.
上記のようにμ1>μ3の関係構成にすることで、幅
方向、特に記録材シートPの外側でローラ10に対するフ
ィルム21のスリップを防止することができる。
With the relation of μ1> μ3 as described above, it is possible to prevent the film 21 from slipping with respect to the roller 10 in the width direction, particularly, outside the recording material sheet P.
このようにμ1>μ2、μ1>μ3とすることによ
り、フィルム21と記録材シートPの搬送速度は常にロー
ラ10の周速度と同一にすることが可能となり、定着時ま
たは転写時の画像乱れを防止することができ、μ1>μ
2、μ1>μ3を同時に実施することにより、ローラ10
の周速(=プロセススピード)と、フィルム21及び記録
材シートPの搬送速度を常に同一にすることが可能とな
り、転写式画像形成装置においては安定した定着画像を
得ることができる。
By setting μ1> μ2 and μ1> μ3 in this manner, the transport speed of the film 21 and the recording material sheet P can always be made equal to the peripheral speed of the roller 10, and image disturbance during fixing or transfer can be prevented. Μ1> μ
2. By simultaneously executing μ1> μ3, the roller 10
And the transport speed of the film 21 and the recording material sheet P can always be the same, and a stable fixed image can be obtained in the transfer type image forming apparatus.
(10)フィルムの寄り制御について。(10) About the film shift control.
第1〜10図の実施例装置のフィルム寄り制御はフィル
ム21を中にしてその幅方向両端側にフィルム端部規制用
の左右一対のフランジ部材22・23を配設してフィルム21
の左右両方向の寄り移動Q・Rに対処したものであるが
(フィルム両側端部規制式)、フィルム片側端部規制式
として次のような構成も有効である。
In the apparatus for controlling the film shift of the embodiment shown in FIGS. 1 to 10, a pair of left and right flange members 22 and 23 for regulating the film end is disposed at both ends in the width direction with the film 21 as the center.
The following configuration is also effective as a film one-side end regulation type, in which the shift movement QR in both the left and right directions is dealt with.
即ち、フィルムの幅方向への寄り方向は常に左方Qか
右方Rへの一方方向となるように、例えば、第11図例装
置のように左右の加圧コイルばね26・27の駆動側のばね
27の加圧力f27が非駆動側のばね26の加圧力f26に比べて
高くなる(f27>f26)ように設定することでフィルム21
を常に駆動側である右方Rへ寄り移動するようにした
り、その他、加熱体19の形状やローラ10の形状を駆動端
側と非駆動端側とで変化をつけてフィルムの搬送力をコ
ントロールしてフィルムの寄り方向を常に一方向のもの
となるようにし、その寄り側のフィルム端部をその側の
フィルム端部の規制部材としてのフランジ部材や、フィ
ルムリブと係合案内部材等の手段で規制する、つまり第
11図例装置においてフィルム21の寄り側Rの端部のみを
規制部材27で規制することにより、フィルムの寄り制御
を安定に且つ容易に行なうことが可能となる。これによ
り装置が画像加熱定着装置である場合では常に安定し良
好な定着画像を得ることができる。
That is, the drive direction of the left and right pressure coil springs 26 and 27 as shown in the apparatus of FIG. Spring
By setting the pressing force f27 of the film 27 to be higher than the pressing force f26 of the spring 26 on the non-drive side (f27> f26), the film 21
To control the film transport force by always moving to the right side R, which is the driving side, and by changing the shape of the heating element 19 and the shape of the roller 10 between the driving end side and the non-driving end side. The direction of the shift of the film is always in one direction, and the end of the film on the shift side is a flange member as a regulating member for the end of the film on that side, or a means such as a film rib and an engagement guide member. Regulation, that is,
In the apparatus shown in FIG. 11, by restricting only the end portion on the side R of the film 21 by the restricting member 27, the film can be controlled stably and easily. Thereby, when the apparatus is an image heating and fixing apparatus, a stable and good fixed image can be always obtained.
また、エンドレスフィルム21はニップ部Nを形成する
加圧ローラ10により駆動されているため特別な駆動ロー
ラは必要としない。
Further, since the endless film 21 is driven by the pressure roller 10 forming the nip portion N, no special driving roller is required.
このような作用効果はフィルムに全周的にテンション
をかけて駆動するテンションタイプの装置構成の場合で
も、本実施例装置のようにテンションフリータイプの装
置構成の場合でも同様の効果を得ることができるが、該
手段構成はテンションフリータイプのものに殊に最適な
ものである。
The same effect can be obtained even in the case of a tension type device configuration in which the film is tensioned and driven around the entire circumference, or in the case of a tension free type device configuration as in the present embodiment. Although possible, the arrangement is particularly suitable for tension-free types.
(11)画像形成装置例 第12図は第1〜10図例の画像加熱定着装置100を組み
込んだ画像形成装置の一例の概略構成を示している。
(11) Example of Image Forming Apparatus FIG. 12 shows a schematic configuration of an example of an image forming apparatus incorporating the image heating / fixing apparatus 100 of FIGS.
本例の画像形成装置は転写式電子写真プロセス利用の
レーザービームプリンタである。
The image forming apparatus of this embodiment is a laser beam printer using a transfer type electrophotographic process.
60はプロセスカートリッジであり、回転ドラム型の電
子写真感光体(以下、ドラムと記す)61・帯電器62・現
像器63・クリーニング装置64の4つのプロセス機器を包
含させてある。このプロセスカートリッジは装置の開閉
部65を開けて装置内を開放することで装置内の所定の位
置に対して着脱交換自在である。
Reference numeral 60 denotes a process cartridge, which includes four process devices of a rotating drum type electrophotographic photosensitive member (hereinafter, referred to as a drum) 61, a charger 62, a developing device 63, and a cleaning device 64. The process cartridge is detachably attached to and removed from a predetermined position in the apparatus by opening the opening / closing section 65 of the apparatus and opening the inside of the apparatus.
画像形成スタート信号によりドラム61が矢示の時計方
向に回転駆動され、その回転ドラム61面が帯電器62によ
り所定の極性・電位に一様帯電され、そのドラムの帯電
処理面に対してレーザースキャナ66から出力される、目
的の画像情報の時系列電気デジタル画素信号に対応して
変調されたレーザビーム67による主走査露光がなされる
ことで、ドラム61面に目的の画像情報に対応した静電潜
像が順次に形成されていく。その潜像は次いで現像器63
でトナー画像として顕画化される。
The drum 61 is rotated in the clockwise direction indicated by the arrow in response to the image formation start signal, and the surface of the rotating drum 61 is uniformly charged to a predetermined polarity and potential by the charger 62. The main scanning exposure with the laser beam 67 modulated according to the time-series electric digital pixel signal of the target image information output from the target image information is performed on the surface of the drum 61 by the electrostatic force corresponding to the target image information. Latent images are sequentially formed. The latent image is then developed 63
Is visualized as a toner image.
一方、給紙カセット68内の記録材シートPが給紙ロー
ラ69と分離パッド70との共働で1枚宛分離給送され、レ
ジストローラ対71によりドラム61の回転と同期取りされ
てドラム61とそれに対向圧接している転写ローラ72との
定着部たる圧接ニップ部73へ給送され、該給送記録材シ
ートP面にドラム1面側のトナー画像が順次に転写され
ていく。
On the other hand, the recording material sheet P in the paper feed cassette 68 is separated and fed one by one by the cooperation of the paper feed roller 69 and the separation pad 70, and synchronized with the rotation of the drum 61 by the registration roller pair 71 so that the drum 61 The sheet is fed to a pressure nip 73, which is a fixing portion of a transfer roller 72 that is in pressure contact with the transfer roller 72, and the toner image on the drum 1 side is sequentially transferred to the sheet P of the fed recording material.
転写部73を通った記録材シートPはドラム61面から分
離されて、ガイド74で定着装置100へ導入され、前述し
た該装置100の動作・作用で未定着トナー画像の加熱定
着が実行されて出口75から画像形成物(プリント)とし
て出力される。
The recording material sheet P that has passed through the transfer unit 73 is separated from the surface of the drum 61 and introduced into the fixing device 100 by the guide 74, and the unfixed toner image is heated and fixed by the operation and operation of the device 100 described above. The image is output from the outlet 75 as an image formed product (print).
転写部73を通って記録材シートPが分離されたドラム
61面はクリーニング装置64で転写残りトナー等の付着汚
染物の除去を受けて繰り返して作像に使用される。
Drum from which recording material sheet P is separated through transfer unit 73
The surface 61 is repeatedly used for image formation after the removal of contaminants such as transfer residual toner by a cleaning device 64.
なお、本発明の像加熱装置は上述例の画像形成装置の
画像熱定着装置としてだけでなく、その他に、画像面加
熱つや出し装置、仮定着装置などとしても効果的に活用
することができる。
The image heating apparatus of the present invention can be effectively used not only as the image heat fixing apparatus of the image forming apparatus of the above-described example but also as an image surface heating polisher, a hypothetical wearing apparatus, and the like.
(発明の効果) 以上のように本発明のフィルム加熱方式の像加熱装置
はフィルムについてテンションフリータイプの構成のも
のであるから、フィルムの駆動力を低減することが可能
となると共に、フィルムの寄り力を小さくできてフィル
ム端部ダメージを防止し得、装置部品や組み立て精度を
ラフにすることも可能で、装置構成を簡略化・小型化・
低コスト化でき、しかも安定性・信頼性のある装置とな
る。
(Effect of the Invention) As described above, since the film heating type image heating apparatus of the present invention has a tension-free type configuration for the film, it is possible to reduce the driving force of the film and to shift the film. The force can be reduced to prevent damage to the edge of the film, and the equipment parts and assembly accuracy can be roughened.
A device that can be reduced in cost and that is stable and reliable.
加圧回転体(駆動回転部材)によりフィルムを駆動す
ることにより装置の構成が更に簡略化されると共に、コ
ストの低減が可能となる。
Driving the film by the pressurizing rotating body (driving rotating member) further simplifies the configuration of the apparatus and reduces costs.
【図面の簡単な説明】[Brief description of the drawings]
第1図は一実施例装置の横断面図。 第2図は縦断面図。 第3図は右側面図。 第4図は左側面図。 第5図は要部の分解斜視図。 第6図は非駆動時のフィルム状態を示した腰部の拡大横
断面図。 第7図は駆動時の同上図。 第8図は構成部材の寸法関係図。 第9図(A)・(B)は夫々回転体としてのローラ10の
形状例を示した誇張形状図。 第10図は回転体として回動ベルトを用いた例を示す図。 第11図はフィルム片側端部規制式の装置例の縦断面図。 第12図は画像形成装置例の概略構成図。 第13図はフィルム加熱方式の画像加熱定着装置の公知例
の概略構成図。 19は加熱体、21はエンドレスフィルム、13はステー、10
は回転体としてのローラ。
FIG. 1 is a cross-sectional view of an apparatus according to one embodiment. FIG. 2 is a longitudinal sectional view. FIG. 3 is a right side view. FIG. 4 is a left side view. FIG. 5 is an exploded perspective view of a main part. FIG. 6 is an enlarged cross-sectional view of a waist showing a film state when not driven. FIG. 7 is the same as above during driving. FIG. 8 is a dimensional relation diagram of constituent members. 9 (A) and 9 (B) are exaggerated shapes showing examples of the shape of the roller 10 as a rotating body. FIG. 10 is a diagram showing an example in which a rotating belt is used as a rotating body. FIG. 11 is a longitudinal sectional view of an example of an apparatus of a film one side end regulating type. FIG. 12 is a schematic configuration diagram of an example of an image forming apparatus. FIG. 13 is a schematic configuration diagram of a known example of a film heating type image heating fixing device. 19 is a heating element, 21 is an endless film, 13 is a stay, 10
Is a roller as a rotating body.

Claims (1)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】加熱体と、前記加熱体と摺動するエンドレ
    ス状のフィルムと、前記フィルムを介して前記加熱体と
    ニップを形成しフィルムを駆動する駆動回転部材と、前
    記フィルムの内側に設けられたフィルムをガイドするた
    めのガイド部材と、を有し、前記フィルムは前記ガイド
    部材に対してルーズに懸回されており、前記ガイド部材
    は少なくとも前記フィルムの移動方向に関して前記加熱
    体の上流側にガイド部を有し、前記ニップで画像を担持
    した記録材を挟持搬送し画像を加熱する像加熱装置にお
    いて、 前記フィルムの駆動時、前記フィルムは前記ガイド部と
    前記ニップでテンションが作用しており、前記ガイド部
    と前記ニップの間に前記フィルムをガイドしない非ガイ
    ド部を有することを特徴とする像加熱装置。
    1. A heating element, an endless film that slides on the heating element, a driving rotating member that forms a nip with the heating element via the film and drives the film, and is provided inside the film. A guide member for guiding the film, wherein the film is loosely suspended with respect to the guide member, and the guide member is at least upstream of the heating body with respect to a moving direction of the film. An image heating apparatus that has a guide portion, and heats an image by nipping and conveying a recording material carrying an image in the nip, wherein when the film is driven, the film acts on the guide portion and the nip in tension. An image heating apparatus having a non-guide portion that does not guide the film between the guide portion and the nip.
JP15360290A 1990-06-11 1990-06-11 Image heating device Expired - Lifetime JP2884714B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15360290A JP2884714B2 (en) 1990-06-11 1990-06-11 Image heating device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP15360290A JP2884714B2 (en) 1990-06-11 1990-06-11 Image heating device
EP91109513A EP0461595B1 (en) 1990-06-11 1991-06-10 Heating apparatus using endless film
DE69117806T DE69117806T2 (en) 1990-06-11 1991-06-10 Heater with continuous film
US08/347,182 US5525775A (en) 1990-06-11 1994-11-22 Heating apparatus using endless film

Publications (2)

Publication Number Publication Date
JPH0444075A JPH0444075A (en) 1992-02-13
JP2884714B2 true JP2884714B2 (en) 1999-04-19

Family

ID=15566074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15360290A Expired - Lifetime JP2884714B2 (en) 1990-06-11 1990-06-11 Image heating device

Country Status (1)

Country Link
JP (1) JP2884714B2 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296783C (en) * 2002-04-25 2007-01-24 佳能株式会社 Image heating apparatus
US8213827B2 (en) 2009-09-01 2012-07-03 Ricoh Company, Ltd. Fixing device, image forming apparatus incorporating same, and fixing method
US8428501B2 (en) 2009-09-03 2013-04-23 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8437675B2 (en) 2009-11-30 2013-05-07 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same having a laminated heater with a flexible heat generation sheet
US8498561B2 (en) 2009-11-17 2013-07-30 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same having a reinforcing member including first and second flanges
US8515324B2 (en) 2009-09-08 2013-08-20 Ricoh Company, Ltd. Fixing device and image forming apparatus employing the fixing device
US8548366B2 (en) 2010-03-03 2013-10-01 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8559860B2 (en) 2010-01-26 2013-10-15 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8583019B2 (en) 2010-03-03 2013-11-12 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8588670B2 (en) 2010-05-07 2013-11-19 Ricoh Company, Ltd. Fixing device having a reflector and image forming apparatus incorporating same
US8588668B2 (en) 2010-03-18 2013-11-19 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8600276B2 (en) 2010-01-27 2013-12-03 Ricoh Company, Limited Heat conduction unit, fixing device, and image forming apparatus
US8606135B2 (en) 2009-09-15 2013-12-10 Ricoh Company, Limited Fixing device and image forming apparatus employing the fixing device
US8630572B2 (en) 2010-03-11 2014-01-14 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8744330B2 (en) 2010-03-08 2014-06-03 Ricoh Company, Ltd. Fixing device having a plurality of heat sources and a plurality of temperature detectors and image forming apparatus including same
US8811837B2 (en) 2010-03-04 2014-08-19 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US9310733B2 (en) 2010-02-07 2016-04-12 Ricoh Company, Ltd. Fixing device and image forming apparatus including same

Families Citing this family (188)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3252501B2 (en) * 1992-12-02 2002-02-04 キヤノン株式会社 Image forming device
JP3301162B2 (en) * 1993-04-28 2002-07-15 キヤノン株式会社 Heating equipment
US5532806A (en) * 1993-04-28 1996-07-02 Canon Kabushiki Kaisha Image fixing apparatus having means for preventing temperature unevenness
US5535012A (en) * 1993-07-31 1996-07-09 Canon Kabushiki Kaisha Information transmit/receive apparatus onto which a sorter can be mounted via an adapter
DE69422757T2 (en) 1993-07-31 2000-07-06 Canon Kk Image communication device with unit for storing recording paper
JP3453420B2 (en) * 1993-07-31 2003-10-06 キヤノン株式会社 Sheet loading device
US5682576A (en) * 1994-06-07 1997-10-28 Canon Kabushiki Kaisha Fixing device
US5801359A (en) * 1994-07-08 1998-09-01 Canon Kabushiki Kaisha Temperature control that defects voltage drop across excitation coil in image heating apparatus
JPH0830125A (en) 1994-07-12 1996-02-02 Canon Inc Heater and image formning device
JPH08314312A (en) * 1995-05-22 1996-11-29 Canon Inc Rotary body for pressing, heating device and image forming device
JP3445034B2 (en) * 1995-07-28 2003-09-08 キヤノン株式会社 Heating equipment
JP3445035B2 (en) * 1995-07-28 2003-09-08 キヤノン株式会社 Heating equipment
US5722026A (en) * 1995-08-31 1998-02-24 Canon Kabushiki Kaisha Pressing rotator and heating-fixing apparatus using the same
JP3102317B2 (en) * 1995-09-08 2000-10-23 キヤノン株式会社 Pressure roller, fixing device, and image forming device
US5819149A (en) 1995-11-01 1998-10-06 Canon Kabushiki Kaisha Image forming apparatus preventing change of size of image
US6469279B1 (en) 1996-03-07 2002-10-22 Canon Kabushiki Kaisha Image heating apparatus and heater
US5960243A (en) * 1996-07-03 1999-09-28 Fuji Xerox Co., Ltd. Fixation apparatus and image forming apparatus
US6337928B1 (en) 1996-08-26 2002-01-08 Canon Kabushiki Kaisha Image transmission apparatus and method therefor
JPH10186920A (en) * 1996-12-24 1998-07-14 Canon Inc Fixing device
JP3450623B2 (en) * 1997-01-21 2003-09-29 キヤノン株式会社 Image forming device
JP3372811B2 (en) * 1997-02-03 2003-02-04 キヤノン株式会社 Heat fixing device
JPH1124492A (en) * 1997-07-03 1999-01-29 Canon Inc Thermal fixing device
JPH11133803A (en) 1997-10-30 1999-05-21 Canon Inc Fixing device and image forming device
JP3780081B2 (en) * 1997-11-07 2006-05-31 キヤノン株式会社 Image forming apparatus
US6175699B1 (en) 1998-05-29 2001-01-16 Canon Kabushiki Kaisha Image fixing device with heater control
US6423941B1 (en) 1998-08-31 2002-07-23 Canon Kabushiki Kaisha Image heating apparatus and heater
JP3647290B2 (en) 1998-11-30 2005-05-11 キヤノン株式会社 Image heating apparatus and image forming apparatus
JP3576845B2 (en) 1998-11-30 2004-10-13 キヤノン株式会社 Tube coating roller manufacturing method, tube coating roller, and heat fixing device having tube coating roller
US6377777B1 (en) 1999-02-19 2002-04-23 Canon Kabushiki Kaisha Fluorine-containing resin-coated pressure roller and heat-fixing device
US6346800B1 (en) 1999-02-24 2002-02-12 Canon Kabushiki Kaisha Power supply device and fixing device operating with the power supply device
JP2000250340A (en) 1999-02-26 2000-09-14 Canon Inc Fixing device and image forming device
JP2000321895A (en) 1999-05-07 2000-11-24 Canon Inc Image heating device and image forming device
JP2001100575A (en) 1999-07-23 2001-04-13 Canon Inc Image heating device
JP4136210B2 (en) 1999-07-30 2008-08-20 キヤノン株式会社 Heating apparatus and image forming apparatus
JP3634679B2 (en) 1999-07-30 2005-03-30 キヤノン株式会社 Heating device
JP2001083822A (en) 1999-09-13 2001-03-30 Canon Inc Heating device, image heating device and image forming device
US6459878B1 (en) 1999-09-30 2002-10-01 Canon Kabushiki Kaisha Heating assembly, image-forming apparatus, and process for producing silicone rubber sponge and roller
JP4592040B2 (en) 1999-11-11 2010-12-01 キヤノン株式会社 Power supply device for image forming apparatus, image forming apparatus using the same, and fixing device
JP2001215767A (en) 2000-02-07 2001-08-10 Canon Inc Color image forming device
EP1143303B1 (en) 2000-03-27 2007-01-10 Canon Kabushiki Kaisha Image forming method
JP2002033182A (en) 2000-05-10 2002-01-31 Canon Inc Heating device and image forming device
JP2001324892A (en) 2000-05-17 2001-11-22 Canon Inc Image heating device, and image forming device provided with the same
JP3631105B2 (en) 2000-05-31 2005-03-23 キヤノン株式会社 Fixing film and image heating apparatus using the same
JP2002015839A (en) 2000-06-29 2002-01-18 Canon Inc Heating element, heating device, and image-forming device
JP2002025752A (en) 2000-07-10 2002-01-25 Canon Inc Heater, heating device, and image-forming device
US6594456B2 (en) 2000-07-26 2003-07-15 Canon Kabushiki Kaisha Image forming apparatus
JP4579393B2 (en) 2000-09-25 2010-11-10 キヤノン株式会社 Image heating device
US6516166B2 (en) 2000-09-28 2003-02-04 Canon Kabushiki Kaisha Image fixing apparatus
JP4630447B2 (en) 2000-11-08 2011-02-09 キヤノン株式会社 Image forming apparatus
JP4659204B2 (en) 2000-11-24 2011-03-30 キヤノン株式会社 Fixing apparatus and image forming apparatus provided with the fixing apparatus
US6701102B2 (en) 2000-12-01 2004-03-02 Canon Kabushiki Kaisha Method and apparatus for controlling the temperature in a fixing device of an image forming apparatus
JP4474056B2 (en) 2001-01-31 2010-06-02 キヤノン株式会社 Heating device
JP3814542B2 (en) 2001-02-20 2006-08-30 キヤノン株式会社 Image heating device
JP2002328548A (en) 2001-02-28 2002-11-15 Canon Inc Image forming device
JP4598970B2 (en) 2001-03-05 2010-12-15 キヤノン株式会社 Image forming apparatus
JP2002268412A (en) 2001-03-07 2002-09-18 Canon Inc Thermal fixing device and image forming device
JP4672888B2 (en) 2001-03-09 2011-04-20 キヤノン株式会社 Fixing device
JP4125023B2 (en) 2001-03-13 2008-07-23 キヤノン株式会社 Fixing device
JP2003131502A (en) 2001-08-10 2003-05-09 Canon Inc Heater having imide base sliding layer and image heating device using the heater
JP3970122B2 (en) 2001-08-10 2007-09-05 キヤノン株式会社 Image heating apparatus having metal rotating body in contact with heater, rotating body, and method of manufacturing the rotating body
JP4261859B2 (en) 2001-10-09 2009-04-30 キヤノン株式会社 Image heating device
JP3870060B2 (en) 2001-10-12 2007-01-17 キヤノン株式会社 Image heating device
JP3826008B2 (en) 2001-10-15 2006-09-27 キヤノン株式会社 Image heating device
JP2003241549A (en) 2001-12-10 2003-08-29 Canon Inc Image heating apparatus
US6947699B2 (en) 2002-02-05 2005-09-20 Canon Kabushiki Kaisha Image heating apparatus with projection extending in longitudinal direction of supporting member
JP2003233264A (en) 2002-02-12 2003-08-22 Canon Inc Fixing device
JP2004006299A (en) 2002-04-22 2004-01-08 Canon Inc Heater having heat generating resistor on substrate, and image heating device using the same
JP2004013045A (en) 2002-06-11 2004-01-15 Canon Inc Image heating device and image forming apparatus
JP4100975B2 (en) 2002-06-13 2008-06-11 キヤノン株式会社 Heating apparatus and image forming apparatus
US6929894B2 (en) 2002-07-10 2005-08-16 Canon Kabushiki Kaisha Toner and fixing method
JP4298410B2 (en) 2002-08-19 2009-07-22 キヤノン株式会社 Image heating apparatus and pressure roller used in the apparatus
JP3977200B2 (en) 2002-08-23 2007-09-19 キヤノン株式会社 Image heating device
JP3990957B2 (en) 2002-08-28 2007-10-17 キヤノン株式会社 Heat fixing device
US6947679B2 (en) 2002-08-29 2005-09-20 Canon Kabushiki Kaisha Image forming apparatus and fixing temperature control method
CN100338536C (en) 2002-10-21 2007-09-19 佳能株式会社 Image forming device
JP2004144833A (en) 2002-10-22 2004-05-20 Canon Inc Heating device
JP2004170950A (en) 2002-11-06 2004-06-17 Canon Inc Image heating device
JP4095406B2 (en) 2002-11-06 2008-06-04 キヤノン株式会社 Heat fixing device
US7010256B2 (en) 2002-11-14 2006-03-07 Canon Kabushiki Kaisha Image heating apparatus having recording medium conveying nip nonuniform in pressure distribution
JP4290015B2 (en) 2003-01-10 2009-07-01 キヤノン株式会社 Color toner and image forming apparatus
US7076183B2 (en) 2003-01-21 2006-07-11 Canon Kabushiki Kaisha Image fusing device and image forming apparatus
JP2004281286A (en) 2003-03-18 2004-10-07 Canon Inc Heating device
US7218873B2 (en) 2003-03-31 2007-05-15 Canon Kabushiki Kaisha Image generating apparatus
JP4454972B2 (en) 2003-06-30 2010-04-21 キヤノン株式会社 Image forming apparatus
JP2005032455A (en) 2003-07-07 2005-02-03 Canon Inc Heating device and image forming apparatus
JP2005107237A (en) 2003-09-30 2005-04-21 Canon Inc Image forming apparatus
JP4617140B2 (en) * 2003-11-27 2011-01-19 キヤノン株式会社 Image heating device
JP2005166299A (en) 2003-11-28 2005-06-23 Canon Inc Heating device and image forming device
JP4599176B2 (en) 2004-01-23 2010-12-15 キヤノン株式会社 Image heating apparatus and heater used in the apparatus
JP2005242321A (en) 2004-01-30 2005-09-08 Canon Inc Image heating apparatus using roller provided with heat insulation layer consisting of porous ceramics material
JP2005242333A (en) 2004-01-30 2005-09-08 Canon Inc Image heating apparatus provided with flexible sleeve
JP4298542B2 (en) 2004-02-20 2009-07-22 キヤノン株式会社 Image heating device
JP4262119B2 (en) 2004-02-27 2009-05-13 キヤノン株式会社 Image forming apparatus
JP4508692B2 (en) 2004-03-24 2010-07-21 キヤノン株式会社 Pressure member, image heating apparatus, and image forming apparatus
JP2005316443A (en) 2004-03-30 2005-11-10 Canon Inc Image-heating device and conveyance roller used for the device
JP4280664B2 (en) 2004-03-31 2009-06-17 キヤノン株式会社 Image heating device
JP4522138B2 (en) 2004-05-07 2010-08-11 キヤノン株式会社 Heat fixing device
JP4557623B2 (en) 2004-07-29 2010-10-06 キヤノン株式会社 Image forming apparatus
US7397488B2 (en) 2004-09-09 2008-07-08 Canon Kabushiki Kaisha Image forming apparatus
JP2006084821A (en) 2004-09-16 2006-03-30 Canon Inc Heat fixing apparatus
JP4773785B2 (en) 2004-09-28 2011-09-14 キヤノン株式会社 Image heating device
JP4614382B2 (en) 2004-10-29 2011-01-19 キヤノン株式会社 Power supply apparatus, heating apparatus, and image forming apparatus
JP2006163298A (en) 2004-12-10 2006-06-22 Canon Inc Color image forming apparatus
JP4621015B2 (en) 2004-12-10 2011-01-26 キヤノン株式会社 Heating device
JP4621033B2 (en) 2005-01-19 2011-01-26 キヤノン株式会社 Image heating device
JP4564861B2 (en) 2005-02-18 2010-10-20 キヤノン株式会社 Image forming apparatus
JP4804024B2 (en) 2005-04-14 2011-10-26 キヤノン株式会社 Image heating apparatus and image forming apparatus
JP4745712B2 (en) * 2005-04-26 2011-08-10 キヤノン株式会社 Fixing device
JP2007025237A (en) 2005-07-15 2007-02-01 Ricoh Co Ltd Fixing device and image forming apparatus
JP5037871B2 (en) 2005-07-27 2012-10-03 キヤノン株式会社 Fixing device
US7421219B2 (en) 2005-09-13 2008-09-02 Canon Kabushiki Kaisha Image forming apparatus
JP2007079033A (en) 2005-09-13 2007-03-29 Canon Inc Image heating apparatus
JP4773781B2 (en) 2005-09-13 2011-09-14 キヤノン株式会社 Image forming apparatus
JP4890821B2 (en) 2005-09-13 2012-03-07 キヤノン株式会社 Image forming apparatus
JP4701050B2 (en) 2005-09-13 2011-06-15 キヤノン株式会社 Image forming apparatus
JP4732088B2 (en) 2005-09-13 2011-07-27 キヤノン株式会社 Image heating device
JP2007079507A (en) 2005-09-16 2007-03-29 Canon Inc Heating device and image forming apparatus
US8026030B2 (en) 2005-11-07 2011-09-27 Canon Kabushiki Kaisha Toner
JP2007199485A (en) 2006-01-27 2007-08-09 Canon Inc Image forming apparatus
JP4795039B2 (en) 2006-02-03 2011-10-19 キヤノン株式会社 Fixing device
JP4498369B2 (en) 2006-02-14 2010-07-07 キヤノン株式会社 Image heating apparatus and flexible sleeve used in the image heating apparatus
JP2007322888A (en) 2006-06-02 2007-12-13 Oki Data Corp Fixing device and image forming apparatus
JP5100061B2 (en) 2006-08-24 2012-12-19 キヤノン株式会社 Fixing apparatus and image forming apparatus
JP2008058378A (en) 2006-08-29 2008-03-13 Canon Inc Image heating device
JP4917903B2 (en) 2007-01-31 2012-04-18 株式会社リコー Heating device, fixing device, temperature control method for heating member, and image forming apparatus
JP2009145568A (en) 2007-12-13 2009-07-02 Canon Inc Heater and image heating device having the same
JP5253240B2 (en) 2008-03-14 2013-07-31 キヤノン株式会社 Image heating apparatus and heater used in the image heating apparatus
JP5127542B2 (en) 2008-04-07 2013-01-23 キヤノン株式会社 Fixing device
JP5366427B2 (en) 2008-04-09 2013-12-11 キヤノン株式会社 Film and image heating apparatus provided with the film
JP5464902B2 (en) 2008-05-30 2014-04-09 キヤノン株式会社 Fixing device
JP5365908B2 (en) 2008-06-16 2013-12-11 株式会社リコー Fixing apparatus and image forming apparatus
JP5142874B2 (en) 2008-07-30 2013-02-13 キヤノン株式会社 Image forming apparatus
JP2010102305A (en) 2008-09-24 2010-05-06 Canon Inc Image forming apparatus
JP5225134B2 (en) 2009-02-09 2013-07-03 キヤノン株式会社 Image heating device
WO2010114150A1 (en) 2009-03-30 2010-10-07 キヤノン株式会社 Image forming system and image forming apparatus
US8331819B2 (en) 2009-06-11 2012-12-11 Canon Kabushiki Kaisha Image forming apparatus
JP5496642B2 (en) * 2009-12-24 2014-05-21 キヤノンファインテック株式会社 Fixing apparatus and image forming apparatus
JP5564981B2 (en) * 2010-02-25 2014-08-06 株式会社リコー Fixing apparatus and image forming apparatus
JP5556236B2 (en) * 2010-02-26 2014-07-23 株式会社リコー Fixing device and image forming apparatus having the same
JP2011191591A (en) 2010-03-16 2011-09-29 Ricoh Co Ltd Fixing device and image forming apparatus
JP5515906B2 (en) 2010-03-18 2014-06-11 株式会社リコー Fixing apparatus and image forming apparatus
JP5814574B2 (en) 2010-03-29 2015-11-17 キヤノン株式会社 Fixing device and flexible sleeve used for the fixing device
JP5465100B2 (en) 2010-06-15 2014-04-09 キヤノン株式会社 Image heating device
JP5496003B2 (en) 2010-07-29 2014-05-21 キヤノン株式会社 Fixing device
EP2453316B1 (en) 2010-11-12 2021-03-24 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
JP5747502B2 (en) 2010-11-12 2015-07-15 株式会社リコー Fixing apparatus and image forming apparatus
JP2012123244A (en) 2010-12-09 2012-06-28 Canon Inc Image forming apparatus
JP5744497B2 (en) 2010-12-09 2015-07-08 キヤノン株式会社 Image forming apparatus
JP5696835B2 (en) 2010-12-14 2015-04-08 株式会社リコー Fixing apparatus and image forming apparatus
JP5589820B2 (en) 2010-12-17 2014-09-17 株式会社リコー Fixing apparatus and image forming apparatus
US8929788B2 (en) 2011-03-02 2015-01-06 Ricoh Company, Ltd. Fixing device having a fixing pad and a pressing pad and image forming apparatus incorporating the same
JP5768507B2 (en) 2011-03-17 2015-08-26 株式会社リコー Fixing apparatus and image forming apparatus
JP5950622B2 (en) 2011-04-19 2016-07-13 キヤノン株式会社 Image heating device
JP5832149B2 (en) 2011-06-02 2015-12-16 キヤノン株式会社 Image heating apparatus and heater used in the apparatus
JP5852332B2 (en) 2011-06-03 2016-02-03 キヤノン株式会社 Image heating device
US8934804B2 (en) 2011-11-29 2015-01-13 Brother Kogyo Kabushiki Kaisha Stay and guide configurations for a fuser unit
JP6136221B2 (en) * 2011-12-27 2017-05-31 株式会社リコー Fixing apparatus and image forming apparatus
JP6390933B2 (en) * 2011-12-27 2018-09-19 株式会社リコー Fixing apparatus and image forming apparatus
JP6025405B2 (en) 2012-06-04 2016-11-16 キヤノン株式会社 Belt changing unit and belt changing method
JP2014016603A (en) 2012-06-11 2014-01-30 Canon Inc Image heating device and belt replacement method
JP6230325B2 (en) 2012-09-24 2017-11-15 キヤノン株式会社 Fixing device
JP6202928B2 (en) 2012-09-24 2017-09-27 キヤノン株式会社 Fixing device
JP6177055B2 (en) 2012-10-29 2017-08-09 キヤノン株式会社 Coating apparatus, coating method, fixing member manufacturing apparatus, fixing member manufacturing method
JP6103913B2 (en) 2012-12-11 2017-03-29 キヤノン株式会社 Fixing device
JP2014142606A (en) 2012-12-25 2014-08-07 Canon Inc Image forming apparatus
JP6173040B2 (en) 2013-05-23 2017-08-02 キヤノン株式会社 Fixing belt and fixing device
US9367008B2 (en) 2013-05-31 2016-06-14 Canon Kabushiki Kaisha Electrophotographic member and heat fixing assembly
US9250578B2 (en) 2013-09-26 2016-02-02 Canon Kabushiki Kaisha Fixing device and image forming apparatus
JP6063858B2 (en) * 2013-12-16 2017-01-18 京セラドキュメントソリューションズ株式会社 Fixing apparatus and image forming apparatus
JP6406849B2 (en) * 2014-03-28 2018-10-17 キヤノン株式会社 Image forming apparatus
US9581943B2 (en) 2014-04-30 2017-02-28 Canon Kabushiki Kaisha Heat fixing apparatus and grease composition for the heat fixing apparatus
JP6391404B2 (en) 2014-10-06 2018-09-19 キヤノン株式会社 Fixing device
JP6422356B2 (en) * 2015-01-29 2018-11-14 キヤノン株式会社 Image forming apparatus
JP6485145B2 (en) 2015-03-19 2019-03-20 株式会社リコー Fixing apparatus and image forming apparatus
JP6558970B2 (en) 2015-06-12 2019-08-14 キヤノン株式会社 Heating apparatus and image forming apparatus
US9964873B2 (en) 2015-06-22 2018-05-08 Ricoh Company, Ltd. Toner, developer, image forming apparatus and toner housing unit
EP3156850A1 (en) 2015-09-25 2017-04-19 Canon Kabushiki Kaisha Fixing device
JP2017116870A (en) 2015-12-25 2017-06-29 キヤノン株式会社 Image heating device and image formation device
JP6614966B2 (en) 2015-12-25 2019-12-04 キヤノン株式会社 Image forming apparatus
JP6708421B2 (en) 2016-02-01 2020-06-10 キヤノン株式会社 Image heating device and image forming device
US10613474B2 (en) 2017-01-30 2020-04-07 Canon Kabushiki Kaisha Image forming apparatus
JP2018188619A (en) 2017-04-28 2018-11-29 キヤノン株式会社 Liquid silicone rubber mixture, and electrophotographic member and fixing device
JP2019028101A (en) 2017-07-25 2019-02-21 キヤノン株式会社 Pressure roller, image heating device, and image forming apparatus
JP2019032357A (en) 2017-08-04 2019-02-28 キヤノン株式会社 Image heating device and image forming apparatus
JP2020042240A (en) 2018-09-13 2020-03-19 キヤノン株式会社 Image heating device and image forming apparatus
JP2020106674A (en) 2018-12-27 2020-07-09 キヤノン株式会社 Image heating device
JP2020106672A (en) 2018-12-27 2020-07-09 キヤノン株式会社 Heat heating device
JP2021128217A (en) 2020-02-12 2021-09-02 キヤノン株式会社 Fixing device and image forming device using it

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296783C (en) * 2002-04-25 2007-01-24 佳能株式会社 Image heating apparatus
US8213827B2 (en) 2009-09-01 2012-07-03 Ricoh Company, Ltd. Fixing device, image forming apparatus incorporating same, and fixing method
US8428501B2 (en) 2009-09-03 2013-04-23 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8515324B2 (en) 2009-09-08 2013-08-20 Ricoh Company, Ltd. Fixing device and image forming apparatus employing the fixing device
US8606135B2 (en) 2009-09-15 2013-12-10 Ricoh Company, Limited Fixing device and image forming apparatus employing the fixing device
US8498561B2 (en) 2009-11-17 2013-07-30 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same having a reinforcing member including first and second flanges
US8437675B2 (en) 2009-11-30 2013-05-07 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same having a laminated heater with a flexible heat generation sheet
US8682237B2 (en) 2010-01-26 2014-03-25 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8559860B2 (en) 2010-01-26 2013-10-15 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8600276B2 (en) 2010-01-27 2013-12-03 Ricoh Company, Limited Heat conduction unit, fixing device, and image forming apparatus
US9310733B2 (en) 2010-02-07 2016-04-12 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8583019B2 (en) 2010-03-03 2013-11-12 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8548366B2 (en) 2010-03-03 2013-10-01 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8811837B2 (en) 2010-03-04 2014-08-19 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8744330B2 (en) 2010-03-08 2014-06-03 Ricoh Company, Ltd. Fixing device having a plurality of heat sources and a plurality of temperature detectors and image forming apparatus including same
US8630572B2 (en) 2010-03-11 2014-01-14 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
US8588668B2 (en) 2010-03-18 2013-11-19 Ricoh Company, Ltd. Fixing device and image forming apparatus incorporating same
US8588670B2 (en) 2010-05-07 2013-11-19 Ricoh Company, Ltd. Fixing device having a reflector and image forming apparatus incorporating same

Also Published As

Publication number Publication date
JPH0444075A (en) 1992-02-13

Similar Documents

Publication Publication Date Title
JP2884714B2 (en) Image heating device
JP2884718B2 (en) Image heating device
JP2884717B2 (en) Image heating device
JP2884715B2 (en) Image heating device
JP2861280B2 (en) Heating equipment
JP2884716B2 (en) Image heating device
JP2917424B2 (en) Image heating device
JP2926904B2 (en) Image heating device
JP2940077B2 (en) Heating equipment
JP2900604B2 (en) Image heating device
JP2940161B2 (en) Image heating device
US5525775A (en) Heating apparatus using endless film
US5210579A (en) Image fixing apparatus having a parting resin layer for reducing frictional resistance of the film through which the image is heated
US5148226A (en) Heating apparatus using endless film
US5862435A (en) Image forming apparatus
JP2004184814A (en) Heating device
JP5911257B2 (en) Image heating device
US5196895A (en) Heating apparatus using endless film
JP2005050693A (en) Heating device and image forming device
JP2833088B2 (en) Fixing device
JP3119002B2 (en) Heating equipment
JP2987965B2 (en) Image heating device
JP3089676B2 (en) Heating equipment
JPH06282183A (en) Heating device
JP2949878B2 (en) Heating equipment

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080212

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090212

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100212

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100212

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110212

Year of fee payment: 12

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 12

Free format text: PAYMENT UNTIL: 20110212