JPH0519649A - Image heating device - Google Patents
Image heating deviceInfo
- Publication number
- JPH0519649A JPH0519649A JP3173952A JP17395291A JPH0519649A JP H0519649 A JPH0519649 A JP H0519649A JP 3173952 A JP3173952 A JP 3173952A JP 17395291 A JP17395291 A JP 17395291A JP H0519649 A JPH0519649 A JP H0519649A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heating
- heater
- image
- power
- 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.)
- Granted
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電子写真装置、静電記録
装置等の画像形成装置に用いられ記録材上の画像を加熱
して定着や表面性の改質を行なう像加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image heating apparatus which is used in an image forming apparatus such as an electrophotographic apparatus or an electrostatic recording apparatus to heat an image on a recording material to fix or modify the surface property.
【０００２】[0002]
【従来の技術】像加熱装置の代表である加熱定着装置と
して特開昭６３−３１３１８２号公報、特開平２−１５
７８７８号公報等で、昇温の速い加熱体と薄膜のフィル
ムを用いたものが提案されている。2. Description of the Related Art As a heat fixing device which is a representative of image heating devices, JP-A-63-313182 and JP-A-2-15 are known.
In Japanese Patent No. 7878, there is proposed a device using a heating body having a rapid temperature rise and a thin film.
【０００３】このようなフィルム加熱装置の一例を図１
１に示す。An example of such a film heating apparatus is shown in FIG.
Shown in 1.
【０００４】薄肉の耐熱性フィルム１（又はシート）
と、該フィルム１の移動駆動手段１１と、該フィルム１
を中にしてその一方面側に固定支持して配置された一定
温調されるヒータ６と、他方面側に該ヒータ６に対向し
て配置され該ヒータ６に対して該フィルム１を介して画
像定着するべき記録材Ｐの顕画像担持面を密着させる加
圧部材２を有し、該フィルム１は少なくとも画像定着実
行時は該フィルム１と加圧部材２との間に搬送導入され
る画像定着すべき記録材Ｐ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１を挟んでヒータ６と加
圧部材２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１を介して該ヒータ６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１と記録材Ｐを分離
点で離間させることを基本とする加熱装置である。Thin heat-resistant film 1 (or sheet)
And the movement driving means 11 for the film 1 and the film 1
A heater 6 which is fixedly supported on one side of the heater 6 and whose temperature is controlled, and on the other side of the heater 6 facing the heater 6 with the film 1 interposed therebetween. The film 1 has a pressurizing member 2 for closely contacting the developed image bearing surface of the recording material P to be image-fixed, and the film 1 is an image conveyed and introduced between the film 1 and the pressurizing member 2 at least when image fixing is performed. To move the recording material P to be fixed in the forward direction at substantially the same speed, and to pass through a nip portion as a fixing portion formed by pressing the heater 6 and the pressing member 2 with the traveling moving film 1 interposed therebetween. The heated image bearing surface of the recording material is heated by the heater 6 through the film 1 to apply thermal energy to the visualized image (unfixed toner image) to soften / melt it, and then after passing through the fixing section. To separate the film 1 and the recording material P at the separation point A heating device for a basic.
【０００５】尚、１２はフィルム１にテンションを加え
るテンションローラである。Reference numeral 12 is a tension roller for applying tension to the film 1.
【０００６】このようなフィルム加熱方式は非常に熱容
量が小さく昇温の速い加熱体を用いることができ、ヒー
タが所定の加熱温度に達する迄の時間を大きく短縮でき
る。In such a film heating system, a heating body having a very small heat capacity and a rapid temperature rise can be used, and the time required for the heater to reach a predetermined heating temperature can be greatly shortened.
【０００７】また、ヒータ６の温度制御はサーミスタ４
によるヒータ６の検知温度が一定となるように発熱体５
への通電を制御する。The temperature of the heater 6 is controlled by the thermistor 4
So that the temperature detected by the heater 6 is constant.
Control energization to.
【０００８】[0008]
【発明が解決する問題点】しかし、入力電圧の変動、発
熱体の抵抗値のばらつきがあると、発熱体の抵抗値がか
わり、温調精度が非常に劣化する。However, if the input voltage fluctuates or the resistance value of the heating element varies, the resistance value of the heating element changes and the temperature control accuracy deteriorates significantly.
【０００９】このため入力電圧や発熱体の抵抗値を検知
して通電電力を切り換えることも考えられるが、特別な
検知回路及び検知のための不必要な時間を必要とする。For this reason, it is possible to detect the input voltage or the resistance value of the heating element to switch the energizing power, but a special detection circuit and unnecessary time for detection are required.
【００１０】[0010]
【問題点を解決する手段】上記問題点を解決する本発明
は、加熱体と、加熱体の温度を検知する温度検知部材
と、を有し、温度検知部材の検知温度が所定温度に一定
に維持されるように加熱体へ通電する制御手段と、を有
する像加熱装置において、上記加熱体に通電開始から上
記所定温度に達する迄の間に検知された昇温速度に基づ
き加熱体への通電電力を制御する制御手段を有すること
を特徴とするものである。The present invention which solves the above problems has a heating element and a temperature detecting member for detecting the temperature of the heating element, and the detection temperature of the temperature detecting member is kept constant at a predetermined temperature. In an image heating device having a control means for energizing the heating body so as to be maintained, energizing the heating body based on a temperature rising rate detected from the start of energization of the heating body until the temperature reaches the predetermined temperature. It has a control means for controlling electric power.
【００１１】[0011]
【実施例】以下本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【００１２】図１は本発明実施するフィルム加熱装置の
略断面図及びヒータ表面温度を制御するための制御部の
ブロック図である。FIG. 1 is a schematic sectional view of a film heating apparatus embodying the present invention and a block diagram of a control unit for controlling a heater surface temperature.
【００１３】本実施例では記録材送りスピード（プロセ
ス・スピード）５０ｍｍ／ｓｅｃでＡ４サイズを毎分８
枚出力するレーザー・ビーム・プリンター（不図示）の
加熱定着装置に本実施例を適用する。In this embodiment, the recording material feeding speed (process speed) is 50 mm / sec and the A4 size is 8 per minute.
This embodiment is applied to a heating and fixing device of a laser beam printer (not shown) that outputs one sheet.
【００１４】この加熱定着装置の基本構成は図１１と同
様であり、詳しい説明は省略する。The basic structure of this heat fixing device is the same as that shown in FIG. 11, and a detailed description thereof will be omitted.
【００１５】ヒータ６はフィルムの移動方向と略直交す
る方向にそって設けられ、厚さ１ｍｍの良熱伝導性のセ
ラミックと、このセラミックの下面に設けられた抵抗値
３４Ωの抵抗発熱体からなる。The heater 6 is provided along a direction substantially orthogonal to the moving direction of the film, and is composed of a ceramic having a good thermal conductivity having a thickness of 1 mm and a resistance heating element having a resistance value of 34Ω provided on the lower surface of the ceramic. .
【００１６】セラミックの上面には温度検知素子である
サーミスタ４が設けられている。A thermistor 4, which is a temperature detecting element, is provided on the upper surface of the ceramic.
【００１７】サーミスタ４の出力信号はＡ／Ｄコンバー
タを介してＣＰＵ８に入力される。ＣＰＵ８はこの入力
信号に基づき、ＡＣドライバ９を介して発熱体５への通
電電力を制御し、ヒータの表面温度を１８０℃になるよ
う温調している。通電電力を決定する方法としては、立
ち上がり時デューティ１００％のフル通電し、サーミス
タ４検知温度が１８０℃に達する前の１６０℃から１７
０℃まで上がるまでのスピードを検知する。このスピー
ドから、ヒータ６へのフル通電時の供給電力（Ｗ）を想
定し１８０℃に温調するのに最適な電力（Ｗo）になる
ようにＷの通電割合（ａ％）を決定する。The output signal of the thermistor 4 is input to the CPU 8 via the A / D converter. Based on this input signal, the CPU 8 controls the electric power supplied to the heating element 5 via the AC driver 9 and adjusts the surface temperature of the heater to 180 ° C. As a method of determining the energizing power, the energization is performed at a full duty with a duty of 100% at the time of rising, and the thermistor 4 detects a temperature of 160 ° C. to 17 ° C.
Detects the speed up to 0 ℃. From this speed, the energization ratio (a%) of W is determined so that the electric power (W) supplied to the heater 6 when fully energized is assumed and the electric power (W o ) is optimal for controlling the temperature to 180 ° C. .
【００１８】図２に本実施例による温度制御方法のフロ
ーチャートを示す。
１）本実施例のフィルム加熱定着装置を有する画像形成
装置への通電（全波）が開始されると、ＣＰＵ８へリセ
ット信号が入力され、２）ヒータ６の表面温度の測定を
開始する。次に３）ヒータ表面温度が１６０℃から１７
０℃になる時間を検知し、４）昇温スピードと１８０℃
温調に最適な電力値の関係を示したテーブルより、通電
電力に対応する通電割合波数を決定し、５）温調を開始
する。FIG. 2 shows a flow chart of the temperature control method according to this embodiment. 1) When energization (full-wave) to the image forming apparatus having the film heating and fixing device of this embodiment is started, a reset signal is input to the CPU 8 and 2) measurement of the surface temperature of the heater 6 is started. Next, 3) heater surface temperature is from 160 ° C to 17
4) Temperature rising speed and 180 ℃
The energization ratio wave number corresponding to the energized power is determined from the table showing the relationship of the optimum power value for the temperature adjustment, and 5) the temperature adjustment is started.
【００１９】ここで、通電割合波数を決定するテーブル
について詳しく説明する。Here, the table for determining the energization ratio wave number will be described in detail.
【００２０】ヒータ６へ供給される電力とヒータ表面１
８０℃付近の昇温スピードの関係は図３に示すように、
１対１で対応される。このことより、ヒータ昇温速度を
計測することで、入力電力を知ることができる。Electric power supplied to the heater 6 and the heater surface 1
As shown in FIG. 3, the relationship of the temperature rising speed near 80 ° C.
There is a one-to-one correspondence. From this, the input power can be known by measuring the heater heating rate.
【００２１】また、この図から１８０℃に温調を維持す
る電力（Ｗo）もわかる。これは、昇温速度がゼロのと
きであり、本実施例では、１７０Ｗである。即ち、１７
０Ｗを印加し続けることで加熱体は１８０℃の状態に維
持される。入力電力（Ｗ）を適正電力（Ｗo）にする割
合（ａ％）はFurther, the electric power (W o ) for maintaining the temperature control at 180 ° C. can also be seen from this figure. This is when the heating rate is zero, and is 170 W in the present embodiment. That is, 17
The heating body is maintained at 180 ° C. by continuously applying 0 W. The ratio (a%) of making the input power (W) the appropriate power (W o ) is
【００２２】[0022]
【外１】 であらわせられる。[Outer 1] Can be represented.
【００２３】図３より、昇温スピードと入力電力の関係
がわかっているため、上式と合わせて、昇温速度と通電
割合ａ（％）の関係も図４のように決定される。これ
が、昇温速度検知による電力補正の基本テーブルとな
る。本実施例では１６半波を１つのサイクルとする波数
制御を採用しているため、昇温速度から出力する波数は
縦軸左のようになる。Since the relationship between the heating rate and the input power is known from FIG. 3, the relationship between the heating rate and the energization rate a (%) is also determined as shown in FIG. 4 together with the above equation. This serves as a basic table for power correction based on the temperature rise rate detection. In this embodiment, since the wave number control with 16 half waves as one cycle is adopted, the wave number output from the heating rate is as shown on the left side of the vertical axis.
【００２４】また、昇温速度を検知するためのヒータ６
の表面温度は、１８０℃付近の方がよい。これは、サー
ミスタ４の温度による抵抗値変化はリニアではなく、指
数関数的に変化するため広い温度領域で感度を高くする
ことができないため、実際に制御する温度領域付近で最
大の感度となるように図５に示す制御回路のＲ1の値を
設定するためである。このため昇温速度の検知は１００
℃以上が好ましい。また、１８０℃近ぼうでは、オーバ
ーシュートが大きくなるため、本実施例ではヒーター６
の表面温度が１６０℃〜１７０℃になるときの時間を検
知し、昇温速度とした。Further, the heater 6 for detecting the rate of temperature rise
The surface temperature of is preferably about 180 ° C. This is because the resistance value change due to the temperature of the thermistor 4 is not linear and changes exponentially, and therefore the sensitivity cannot be increased in a wide temperature range, so that the maximum sensitivity is obtained in the vicinity of the actually controlled temperature range. This is for setting the value of R 1 of the control circuit shown in FIG. Therefore, the temperature rise rate is 100
C. or higher is preferable. Further, since the overshoot becomes large near 180 ° C., the heater 6 is used in this embodiment.
The time required for the surface temperature of the sample to reach 160 ° C to 170 ° C was detected and used as the rate of temperature increase.
【００２５】以上の様なアルゴリズムを実施すること
で、ヒータ６の表面温度の昇温スピードを検知するだけ
で、ヒータ６を一定温度に維持する温調時の最適な通電
電力が決定される。By executing the algorithm as described above, only by detecting the temperature rising speed of the surface temperature of the heater 6, the optimum energizing power during temperature control for maintaining the heater 6 at a constant temperature is determined.
【００２６】（第２の実施例）図６は本発明の第２の実
施例を適用するフィルム加熱定着装置の略断面図と、制
御部のブロック図を示す。本実施例では、サーミスタ４
の温度測定バラツキを補正するため、補正値入力部１０
を有している。補正値の入力はあらかじめ個々のサーミ
スタ３の温度測定誤差を測定で求め、特にデータ入力す
る温度領域でのティピカルなサーミスタの出力値との差
を求めること又はフィルム加熱定着装置に組み込んだ状
態でヒータ６の表面の立上り温度カーブを求め、そこで
上記と同様にティピカルなサーミスタが出すべき出力電
圧との差を求める方法などがある。以上のような方法で
サーミスタ４の温度測定誤差を求めた後は例えばディッ
プスイッチ等を用いてＣＰＵ８に補正情報を入力してや
る。ＣＰＵ８はこの補正情報に基づき昇温スピードと波
数の関係を示したテーブルの波数の値を全体的にシフト
することで装置によらず、より安定した温調制御が可能
となる。(Second Embodiment) FIG. 6 shows a schematic sectional view of a film heating and fixing apparatus to which the second embodiment of the present invention is applied and a block diagram of a control section. In this embodiment, the thermistor 4
In order to correct the temperature measurement variation of the correction value input unit 10
have. To input the correction value, the temperature measurement error of each thermistor 3 is obtained by measurement in advance, and in particular, the difference from the typical output value of the thermistor in the temperature range where the data is input is obtained or the heater is installed in the film heating and fixing device. There is also a method of obtaining the rising temperature curve of the surface of No. 6 and then obtaining the difference from the output voltage to be output by the typical thermistor in the same manner as above. After the temperature measurement error of the thermistor 4 is obtained by the above method, the correction information is input to the CPU 8 by using, for example, a dip switch. Based on this correction information, the CPU 8 shifts the wave number value in the table showing the relationship between the temperature rising speed and the wave number as a whole, thereby enabling more stable temperature control regardless of the device.
【００２７】（第３の実施例）図７に本発明の更に好ま
しい実施例を説明する。(Third Embodiment) FIG. 7 illustrates a further preferred embodiment of the present invention.
【００２８】第１，第２の実施例では加熱体の一定温調
時一定電力を発熱体に印加し続けているが、サーミスタ
その他のばらつき、環境変動があると、加熱体温度が所
定の定着温度と異なってくる場合がある。In the first and second embodiments, the constant electric power is continuously applied to the heating element during the constant temperature control of the heating element. However, if the thermistor or the like causes variations or environmental changes, the heating element temperature is fixed to a predetermined value. It may differ from the temperature.
【００２９】そこで本実施例では加熱体の昇降温をこま
めに繰り返すことで加熱体を一定温度に維持する。Therefore, in the present embodiment, the heating element is maintained at a constant temperature by frequently repeating the temperature rising / falling of the heating element.
【００３０】即ち、一定温調中もサーミスタでヒータ温
度を検出し、サーミスタの検知出力が所定の定着温度に
対応した所定値より低い時はヒータに昇温させる電力を
印加し、所定値より高い場合はヒータに降温させる電力
を印加する。That is, the heater temperature is detected by the thermistor even during constant temperature control, and when the detection output of the thermistor is lower than a predetermined value corresponding to a predetermined fixing temperature, electric power for heating the heater is applied, and the temperature is higher than the predetermined value. In this case, electric power for lowering the temperature is applied to the heater.
【００３１】図７のフローチャート中１）〜３）は第１
の実施例と同様であるので説明は省略する。In the flowchart of FIG. 7, 1) to 3) are the first
Since it is the same as the embodiment described above, the description thereof will be omitted.
【００３２】４）では１６０℃〜１７０℃間の昇温速度
に基づき図８のテーブルで理論的に１８０℃に維持され
る電力を与える波数（図中実線）より大きな電力を与え
る波数Ｈ1と小さな電力を与える波数Ｈ2の２つの波数を
決定している。In 4), based on the rate of temperature rise between 160 ° C. and 170 ° C., the wave number H 1 that gives a larger power than the wave number (solid line in the figure) that gives a power theoretically maintained at 180 ° C. in the table of FIG. Two wave numbers of wave number H 2 giving a small electric power are determined.
【００３３】そして５）では、サーミスタ検知温度が１
８０℃に対して高い温度を検知しているときは、Ｈ2の
波数による通電を行ないヒータを降温させ、１８０℃よ
り低い温度を検知しているときはＨ1の波数による通電
を行ないヒータを昇温させる。In 5), the temperature detected by the thermistor is 1
When a temperature higher than 80 ° C is detected, the heater is energized by the wave number of H 2 to lower the temperature, and when a temperature lower than 180 ° C is detected, the heater is energized by the wave number of H 1. Raise the temperature.
【００３４】尚、本実施例では一定温調中のヒータを降
温させる際にもヒータに電力を加えているが、これはヒ
ータの熱容量が小さいため通電をオフすると非常に降温
し、温調のリップルが大きくなってしまうからである。In this embodiment, electric power is applied to the heater even when the temperature of the heater during constant temperature control is lowered, but this is because the heat capacity of the heater is small, so that the temperature is greatly lowered when the energization is turned off. This is because the ripple becomes large.
【００３５】このように本実施例によればヒータを小さ
なリップルで一定温調することができる。As described above, according to this embodiment, it is possible to regulate the temperature of the heater with a small ripple.
【００３６】（第４の実施例）装置が冷えている状態と
十分に暖まっている状態では同じ温度を維持する場合に
必要なエネルギーは同じではない。(Fourth Embodiment) The energy required to maintain the same temperature when the apparatus is cold and when it is sufficiently warm is not the same.
【００３７】つまり、装置が冷えているときでは、例え
ば、加圧ローラに多くの熱を奪われ、その分多くの熱量
をヒータに与えないと温調温度を維持できない。That is, when the apparatus is cold, for example, a large amount of heat is taken by the pressure roller, and the heat control temperature cannot be maintained unless a large amount of heat is applied to the heater.
【００３８】これに対して、連続通紙後は装置があたた
まっているため、ヒータの奪われる熱量は少なくなり、
温調温度に必要な熱量は少なくなる。On the other hand, since the apparatus is warmed up after continuous paper feeding, the amount of heat taken by the heater is reduced,
The amount of heat required for the controlled temperature is reduced.
【００３９】これを示したものが図１０である。図１０
からわかるように連続通紙後に必要な最適入力電力は８
０Ｗになる。このときの電力と昇温速度の関係は、最適
電力が少なくなった分、左へ平行移動する。FIG. 10 shows this. Figure 10
As you can see, the optimum input power required after continuous paper feeding is 8
It becomes 0W. At this time, the relationship between the electric power and the temperature rising rate moves in parallel to the left as the optimum electric power decreases.
【００４０】これら２つの系を満足するために、図９の
テーブルで２値の通電波数Ｈ1，Ｈ2′をＨは装置が冷え
ているときの最適電力すなわち１７０Ｗより少し高くな
るような供給電力になるような波数Ｈ1とし、Ｈ2′を通
続通紙後必要な最適電力すなわち８０Ｗよりも少し低く
なるような供給電力になるような波数Ｈ2′を設定す
る。In order to satisfy these two systems, the binary conduction wave numbers H 1 and H 2 ′ in the table of FIG. 9 are set such that H is slightly higher than the optimum power when the apparatus is cold, that is, 170 W. a wave number H 1 such that the supply power, set the 'wave number H 2 such that the power supply such that slightly lower than the required optimum power after passing continued sheet passing i.e. 80W' H 2.
【００４１】このようにすることで、装置が冷えている
ときでも、連続通紙した直後の再通紙モードにおいて
も、温調温度１８０℃での制御が可能となった。By doing so, it becomes possible to control the temperature control temperature of 180 ° C. even when the apparatus is cold and even in the re-feeding mode immediately after continuous feeding.
【００４２】前述第１〜第４の実施例では通電電力を制
御するのに波数を制御したが、位相制御や、またパルス
通電する場合はパルス幅を変えても良い。In the above-mentioned first to fourth embodiments, the wave number is controlled to control the energizing power, but the pulse width may be changed in the case of phase control or pulse energization.
【００４３】更に、加熱体としては熱容量が小さい場合
は加熱ローラ等にも使用できる。Further, when the heat capacity of the heating element is small, it can also be used as a heating roller or the like.
【００４４】[0044]
【発明の効果】以上説明した通り本発明によれば、入力
電圧や発熱体の抵抗値を検知する特別な検知回路や検知
のための特別な時間を必要とせずに加熱体を適正な設定
温度に一定温調できる。As described above, according to the present invention, the heating element can be set to a proper set temperature without requiring a special detection circuit for detecting the input voltage or the resistance value of the heating element or a special time for the detection. The temperature can be adjusted to a constant level.
【図１】本発明の実施例の像加熱装置の断面図である。FIG. 1 is a sectional view of an image heating apparatus according to an embodiment of the present invention.
【図２】本発明の実施例のフローチャートである。FIG. 2 is a flowchart of an embodiment of the present invention.
【図３】ヒータ昇温速度と供給電力の関係を示した図で
ある。FIG. 3 is a diagram showing a relationship between a heater temperature raising rate and supplied electric power.
【図４】昇温速度と最適な通電電力の関係を示した図で
ある。FIG. 4 is a diagram showing a relationship between a temperature rising rate and an optimum energizing power.
【図５】温度検出回路を示す図である。FIG. 5 is a diagram showing a temperature detection circuit.
【図６】本発明の第２実施例の断面図である。FIG. 6 is a sectional view of a second embodiment of the present invention.
【図７】本発明の第３実施例のフローチャートである。FIG. 7 is a flowchart of a third embodiment of the present invention.
【図８】本発明の第３実施例の昇温速度と最適な通電電
力の関係を示した図である。FIG. 8 is a diagram showing the relationship between the temperature rising rate and the optimum energizing power according to the third embodiment of the present invention.
【図９】本発明の第４実施例の昇温速度と最適な通電電
力の関係を示した図である。FIG. 9 is a diagram showing the relationship between the temperature rising rate and the optimum energizing power in the fourth embodiment of the present invention.
【図１０】本発明の第４実施例のヒータ昇温速度と最適
な通電電力の関係を示した図である。FIG. 10 is a diagram showing a relationship between a heater heating rate and an optimum energizing power according to a fourth embodiment of the present invention.
【図１１】従来の定着装置の断面図である。FIG. 11 is a sectional view of a conventional fixing device.
１ フィルム ２ 加圧ローラ ４ サーミスタ ５ 発熱体 ６ ヒータ 1 film 2 pressure roller 4 thermistor 5 heating element 6 heater
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福沢 大三 東京都大田区下丸子３丁目30番２号キヤノ ン株式会社内 (72)発明者 中村 俊治 東京都大田区下丸子３丁目30番２号キヤノ ン株式会社内 (72)発明者 大塚 康正 東京都大田区下丸子３丁目30番２号キヤノ ン株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Daizo Fukuzawa Kyano, 3-30-2 Shimomaruko, Ota-ku, Tokyo Within the corporation (72) Inventor Shunji Nakamura Kyano, 3-30-2 Shimomaruko, Ota-ku, Tokyo Within the corporation (72) Inventor Yasumasa Otsuka Kyano, 3-30-2 Shimomaruko, Ota-ku, Tokyo Within the corporation
Claims (5)
検知部材と、を有し、温度検知部材の検知温度が所定温
度に一定に維持されるように加熱体へ通電する像加熱装
置において、 上記加熱体に通電開始から上記所定温度に達する迄の間
に検知された昇温速度に基づき加熱体への通電電力を制
御する制御手段を有することを特徴とする像加熱装置。1. An image heating apparatus having a heating body and a temperature detecting member for detecting the temperature of the heating body, and energizing the heating body so that the temperature detected by the temperature detecting member is kept constant at a predetermined temperature. 2. An image heating apparatus according to claim 1, further comprising control means for controlling electric power supplied to the heating body based on a temperature rising rate detected from the start of energization of the heating body until the temperature reaches the predetermined temperature.
材と共に移動するフィルムを有し、顕画像はフィルムを
介して上記加熱体からの熱で加熱されることを特徴とす
る請求項１の像加熱装置。2. The apparatus further comprises a film that moves together with the recording material supporting the visible image, and the visible image is heated by the heat from the heating body through the film. Image heating device.
フィルムは加熱体に摺動することを特徴とする請求項２
の像加熱装置。3. The heating element is used in a stationary state, and the film slides on the heating element.
Image heating device.
温時、降温時共に加熱体に通電を行い、上記昇温速度に
基づき昇温時、降温時の両方の通電電力を制御すること
を特徴とする請求項１から３に記載の像加熱装置。4. The control means energizes the heating body during constant temperature control during heating and cooling, and controls both energization power during heating and cooling based on the heating rate. The image heating device according to any one of claims 1 to 3, wherein:
０℃以上、上記所定温度未満の状態にある時に行なわれ
ることを特徴とする請求項１から４の像加熱装置。5. The heating temperature is 10 when detecting the heating rate.
The image heating apparatus according to claim 1, wherein the image heating apparatus is performed when the temperature is 0 ° C. or higher and lower than the predetermined temperature.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17395291A JP2925364B2 (en) | 1991-07-15 | 1991-07-15 | Image heating device |
| US07/912,722 US5444521A (en) | 1991-07-15 | 1992-07-13 | Image fixing device capable of controlling heating overshoot |
| EP92112007A EP0523638B1 (en) | 1991-07-15 | 1992-07-14 | Fixing device capable of controlling heating overshoot |
| DE69219823T DE69219823T2 (en) | 1991-07-15 | 1992-07-14 | Fuser capable of controlling excess heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17395291A JP2925364B2 (en) | 1991-07-15 | 1991-07-15 | Image heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0519649A true JPH0519649A (en) | 1993-01-29 |
| JP2925364B2 JP2925364B2 (en) | 1999-07-28 |
Family
ID=15970104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17395291A Expired - Fee Related JP2925364B2 (en) | 1991-07-15 | 1991-07-15 | Image heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2925364B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07219369A (en) * | 1993-12-16 | 1995-08-18 | Xerox Corp | Method and equipment for heat treatment of toner picture |
| JP2010191204A (en) * | 2009-02-18 | 2010-09-02 | Canon Inc | Image heating apparatus |
| JP2015219343A (en) * | 2014-05-16 | 2015-12-07 | キヤノン株式会社 | Heater control device, image heating device, and image forming apparatus |
-
1991
- 1991-07-15 JP JP17395291A patent/JP2925364B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07219369A (en) * | 1993-12-16 | 1995-08-18 | Xerox Corp | Method and equipment for heat treatment of toner picture |
| JP2010191204A (en) * | 2009-02-18 | 2010-09-02 | Canon Inc | Image heating apparatus |
| JP2015219343A (en) * | 2014-05-16 | 2015-12-07 | キヤノン株式会社 | Heater control device, image heating device, and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2925364B2 (en) | 1999-07-28 |
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