JP2708641B2 - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JP2708641B2 JP2708641B2 JP3071027A JP7102791A JP2708641B2 JP 2708641 B2 JP2708641 B2 JP 2708641B2 JP 3071027 A JP3071027 A JP 3071027A JP 7102791 A JP7102791 A JP 7102791A JP 2708641 B2 JP2708641 B2 JP 2708641B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- paper
- temperature
- roller
- fixing device
- 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
Links
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- Fixing For Electrophotography (AREA)
- Control Of Temperature (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真装置における
定着装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for an electrophotographic apparatus.
【０００２】[0002]
【従来の技術】従来、プリンタ、複写機等において画像
を形成する場合、一般にカールソン方式による電子写真
記録方法が用いられている。該電子写真記録方法におい
ては、帯電された感光体ドラムの表面を露光装置によっ
て露光し、光学手段によって読み取った原稿上の画像を
感光体ドラム上に静電潜像として形成するようになって
いる。該静電潜像は、現像装置によって現像された後、
転写装置によって記録媒体上に転写され、定着装置によ
って定着されて画像が形成されるようになっている。そ
して、上記感光体ドラムを繰り返し使用するために、転
写後に感光体ドラムに残留したトナーはクリーニング装
置によって清掃される。2. Description of the Related Art Conventionally, when an image is formed on a printer, a copying machine, or the like, an electrophotographic recording method based on the Carlson method is generally used. In the electrophotographic recording method, the surface of a charged photosensitive drum is exposed by an exposure device, and an image on a document read by an optical unit is formed as an electrostatic latent image on the photosensitive drum. . After the electrostatic latent image is developed by a developing device,
The image is transferred onto a recording medium by a transfer device and fixed by a fixing device to form an image. Then, in order to use the photosensitive drum repeatedly, the toner remaining on the photosensitive drum after the transfer is cleaned by a cleaning device.
【０００３】上記定着装置は、通常、ヒートローラとバ
ックアップローラとから成るヒートローラ定着器で構成
され、ヒートローラは各種方法によって加熱される（特
開昭５６−１６２７７２号公報、特開昭６０−２６００
７７号公報及び実開昭５７−２２７６３号公報参照）。
図２は従来の定着装置の概略図である。The above fixing device is generally constituted by a heat roller fixing device comprising a heat roller and a backup roller, and the heat roller is heated by various methods (Japanese Patent Application Laid-Open Nos. 56-162772 and 60-162772). 2600
No. 77 and Japanese Utility Model Laid-Open No. 57-22763).
FIG. 2 is a schematic diagram of a conventional fixing device.
【０００４】図において、１はヒートローラ、２はヒー
トローラ１に対向させて配設されるバックアップローラ
である。上記ヒートローラ１は図示しない駆動部によっ
てギヤ３を介して回転させられる。上記ヒートローラ１
とバックアップローラ２との間に未定着のトナーを担持
した紙を通すと、トナーがヒートローラ１によって加熱
され、熱定着が行われる。上記ヒートローラ１は、金属
製パイプ４の周囲に電気絶縁層５を被覆し、更にその周
囲に発熱体７を設け、最外部にフッ素樹脂膜から成る離
型層８を被覆して形成される。上記発熱体７の両端部に
はリング状の電極６Ａ、６Ｂが設けられ、該電極６Ａ、
６Ｂは、給電部９と接触させられ、交流電源１０から給
電される。上記発熱体７は加熱され、図示しないサーミ
スタ等によって温度を検出することにより定着温度にな
るように制御が行われる。In FIG. 1, reference numeral 1 denotes a heat roller, and 2 denotes a backup roller provided to face the heat roller 1. The heat roller 1 is rotated via a gear 3 by a driving unit (not shown). Heat roller 1
When a sheet carrying unfixed toner is passed between the heat roller 1 and the backup roller 2, the toner is heated by the heat roller 1, and heat fixing is performed. The heat roller 1 is formed by covering an electric insulating layer 5 around a metal pipe 4, further providing a heating element 7 therearound, and covering a release layer 8 made of a fluororesin film on the outermost side. . Ring-shaped electrodes 6A and 6B are provided at both ends of the heating element 7, and the electrodes 6A and 6B are provided.
6B is brought into contact with the power supply unit 9 and is supplied with power from the AC power supply 10. The heating element 7 is heated, and the temperature is detected by a thermistor (not shown) or the like, so that the heating element 7 is controlled to the fixing temperature.
【０００５】図３は従来の定着装置における発熱体の回
路モデルを示す図である。図において、７は発熱体、１
５〜２０は該発熱体７を構成する複数の抵抗であり、該
抵抗１５〜２０は紙幅方向に直列に接続されて配列され
る。そして、紙幅方向の両端に給電部９が設けられ、該
給電部９を介して上記発熱体７が電源２１に接続され
る。FIG. 3 is a diagram showing a circuit model of a heating element in a conventional fixing device. In the figure, 7 is a heating element, 1
Reference numerals 5 to 20 denote a plurality of resistors constituting the heating element 7, and the resistors 15 to 20 are connected and arranged in series in the paper width direction. The power supply units 9 are provided at both ends in the paper width direction, and the heating element 7 is connected to the power supply 21 via the power supply units 9.
【０００６】また、Ａはヒートローラ１の全域にわたる
だけの幅を有しない紙を通紙させた場合の通紙部、Ｂは
そのときの非通紙部である。上記通紙部Ａには抵抗１７
〜２０が、非通紙部Ｂには抵抗１５、１６が位置させら
れ、上記各抵抗１５〜２０がそれぞれ発熱するようにな
っている。A is a paper passing portion when paper having a width not large enough to cover the entire area of the heat roller 1 is passed, and B is a non-paper passing portion at that time. The paper passing section A has a resistor 17
The resistors 15 and 16 are located in the non-sheet passing portion B, and each of the resistors 15 to 20 generates heat.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記構
成の定着装置においては、幅の狭い紙を連続して使用
し、ヒートローラ１の一部に対してのみ通紙すると、ヒ
ートローラ１の非通紙部Ｂの温度が定着温度より高くな
ってしまう。すなわち、ヒートローラ１をサーミスタ等
によって定着温度になるように制御を行った場合、通紙
部Ａは紙に熱を奪われるが非通紙部Ｂは紙に熱を奪われ
ない。そして、その状態で幅の広い紙を通すと非通紙部
Ｂの温度が定着温度より高くなって定着過剰となり、一
旦（いったん）紙に転写されたトナーがヒートローラ１
に再び付着してしまう。However, in the fixing device having the above-mentioned structure, when narrow paper is continuously used and only a part of the heat roller 1 is passed, the non-passage of the heat roller 1 is prevented. The temperature of the paper section B becomes higher than the fixing temperature. That is, when the heat roller 1 is controlled to a fixing temperature by a thermistor or the like, the paper passing portion A loses heat to the paper, but the non-paper passing portion B does not lose heat to the paper. Then, when a wide sheet is passed in this state, the temperature of the non-sheet passing portion B becomes higher than the fixing temperature and the fixing is excessive, so that the toner once (once) transferred to the sheet is heated by the heat roller 1.
Will adhere again.
【０００８】本発明は、上記従来の定着装置の問題点を
解決して、非通紙部の温度が上昇するのを防止するとと
もに、温度制御機能を有する定着装置を提供することを
目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the conventional fixing device and to provide a fixing device which prevents a temperature of a non-sheet passing portion from rising and has a temperature control function. .
【０００９】[0009]
【課題を解決するための手段】そのために、本発明の定
着装置は、回転自在に配設されたローラ、該ローラと対
向させて配設され、上記ローラの軸方向に延在させて長
尺状に形成され、かつ、温度の上昇に伴って抵抗が大き
くなる特性を有する発熱体、及び該発熱体の長手方向に
延在させて配設され、上記発熱体と共にヒータ部を構成
する電極を備え、紙送りを行うとともに紙上のトナーを
定着する。For this purpose, a fixing device according to the present invention comprises a roller rotatably disposed, a roller disposed opposite to the roller, and an elongated roller extending in the axial direction of the roller. A heating element formed in a shape and having a characteristic that the resistance increases with an increase in temperature, and an electrode that is disposed to extend in the longitudinal direction of the heating element and constitutes a heater section together with the heating element. To feed the paper and fix the toner on the paper.
【００１０】そして、上記電極には、紙送り方向に対し
て平行な向きの電流を上記発熱体に流すための電圧が印
加され、上記ヒータ部は紙送り方向において固定され
る。A voltage is applied to the electrodes so that a current in a direction parallel to the paper feeding direction flows through the heating element, and the heater section is fixed in the paper feeding direction.
【００１１】[0011]
【作用】本発明によれば、上記のように定着装置は、回
転自在に配設されたローラ、該ローラと対向させて配設
され、上記ローラの軸方向に延在させて長尺状に形成さ
れ、かつ、温度の上昇に伴って抵抗が大きくなる特性を
有する発熱体、及び該発熱体の長手方向に延在させて配
設され、上記発熱体と共にヒータ部を構成する電極を備
え、紙送りを行うとともに紙上のトナーを定着する。According to the present invention, as described above, the fixing device is provided with a roller rotatably disposed, disposed opposite to the roller, and extended in the axial direction of the roller to have a long shape. A heating element that is formed and has a characteristic that resistance increases with an increase in temperature, and an electrode that is disposed to extend in the longitudinal direction of the heating element and constitutes a heater unit together with the heating element, The paper is fed and the toner on the paper is fixed.
【００１２】そして、上記電極には、紙送り方向に対し
て平行な向きの電流を上記発熱体に流すための電圧が印
加され、上記ヒータ部は紙送り方向において固定され
る。この場合、未定着のトナーが付着させられた紙は、
上記ローラと発熱体との間に送られ、該発熱体によって
加熱されて定着が行われる。このとき、通紙部において
は通紙される紙が加熱されるので温度が低下するが、非
通紙部においては紙が通紙されないので温度が上昇しよ
うとする。ところが、上記発熱体において、非通紙部に
対応する部分の抵抗が大きくなり、流れる電流が少なく
なるので、非通紙部の温度が上昇するのを抑制する。A voltage is applied to the electrodes so that a current in a direction parallel to the paper feeding direction flows through the heating element, and the heater section is fixed in the paper feeding direction. In this case, the paper to which the unfixed toner is attached is
The sheet is sent between the roller and the heating element, and is heated by the heating element to perform fixing. At this time, the temperature of the paper passing portion is reduced because the paper to be passed is heated, but the temperature of the non-paper passing portion tends to rise because the paper is not passed. However, in the heating element, the resistance of the portion corresponding to the non-sheet passing portion increases, and the flowing current decreases, so that the temperature of the non-sheet passing portion is prevented from rising.
【００１３】[0013]
【実施例】以下、本発明の実施例について図面を参照し
ながら詳細に説明する。図４は発熱体の温度上昇による
抵抗値の変動を示す図である。図の直線αに示すよう
に、発熱体７の各抵抗１５〜２０は温度上昇と共に抵抗
値が増加する。したがって、従来の定着装置において非
通紙部Ｂの抵抗１５、１６の抵抗値が通紙部Ａの抵抗１
７〜２０の抵抗値より増加するので、発熱体７全体の抵
抗値が小さくなり発熱量が少なくなってしまう。そこ
で、通紙部Ａを定着温度に維持するような制御を行う
と、非通紙部Ｂの温度は上昇方向へフィードバックされ
ることになる。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 4 is a diagram showing a change in resistance value due to a rise in temperature of the heating element. As shown by the straight line α in the figure, the resistances of the respective resistors 15 to 20 of the heating element 7 increase as the temperature increases. Therefore, in the conventional fixing device, the resistance values of the resistors 15 and 16 of the non-sheet passing portion B are equal to the resistance 1
Since the resistance value increases from 7 to 20, the resistance value of the entire heating element 7 decreases, and the heat generation amount decreases. Therefore, if control is performed to maintain the paper passing portion A at the fixing temperature, the temperature of the non-paper passing portion B is fed back in the rising direction.
【００１４】図１は本発明の定着装置を説明するための
前提となる、バックアップローラと対向させて配設され
たヒートローラの断面図、図５はヒートローラの要部破
断図である。図において、４は金属製パイプであり、該
金属製パイプ４に電気絶縁層５が被覆される。電極２６
Ａはリング状部２６Ａ1 、及び金属製パイプ４の軸方
向、すなわち、紙幅方向に形成された細い帯状部２６Ａ
2 から成る。電極２６Ｂはリング状部２６Ｂ1 、及び金
属製パイプ４の軸方向に形成される細い帯状部２６Ｂ2
から成る。上記電極２６Ｂの帯状部２６Ｂ2 は、電極２
６Ａの帯状部２６Ａ2 に対して金属製パイプ４の反対側
に形成され、円周方向における両者間の距離が等しくな
るように平行に配設される。このような構成の電極２６
Ａ、２６Ｂの上に、更に発熱体２７、フッ素樹脂から成
る離型層８が順次被覆される。なお、本実施例の発熱体
２７は、バックアップローラに対向させて回転自在に配
設するのではなく、固定して配設され、紙送り方向に電
圧が印加される。FIG. 1 is a cross-sectional view of a heat roller provided opposite to a backup roller, which is a prerequisite for explaining the fixing device of the present invention. FIG. 5 is a cutaway view of a main part of the heat roller. In the figure, reference numeral 4 denotes a metal pipe, and the metal pipe 4 is covered with an electric insulating layer 5. Electrode 26
A is a thin band-like portion 26A formed in the axial direction of the ring-shaped portion 26A 1 and the metal pipe 4, that is, in the paper width direction.
Consists of two . The electrode 26B has a ring-shaped portion 26B 1 and a thin band-shaped portion 26B 2 formed in the axial direction of the metal pipe 4.
Consists of Strip portion 26B 2 of the electrode 26B, the electrode 2
6A is formed against belt portion 26A 2 on the opposite side of the metal pipe 4, the distance between them in the circumferential direction is arranged parallel to to be equal. Electrode 26 having such a configuration
A heating element 27 and a release layer 8 made of a fluororesin are sequentially coated on A and 26B. Note that the heating element 27 of this embodiment is not fixed to the backup roller but rotatably arranged, but is fixedly arranged and a voltage is applied in the paper feeding direction.
【００１５】図６は本発明の定着装置における発熱体の
回路モデルを示す図である。図において、２７は発熱
体、３１〜３７は該発熱体２７を構成する複数の抵抗で
ある。該抵抗３１〜３７は、紙幅方向に並列に接続され
て配列されて、電極２６Ａ、２６Ｂを介して電源２１に
接続される。また、Ａは発熱体２７の全域にわたるだけ
の幅を有しない紙を通紙させた場合の通紙部、Ｂはその
ときの非通紙部である。上記通紙部Ａには抵抗３３〜３
７が、非通紙部Ｂには抵抗３１、３２が位置させられ、
上記各抵抗３１〜３７がそれぞれ発熱するようになって
いる。FIG. 6 is a diagram showing a circuit model of a heating element in the fixing device of the present invention. In the figure, 27 is a heating element, and 31 to 37 are a plurality of resistors constituting the heating element 27. The resistors 31 to 37 are connected and arranged in parallel in the paper width direction, and are connected to the power supply 21 via the electrodes 26A and 26B. A is a paper passing portion when paper not having a width sufficient to cover the entire area of the heating element 27 is passed, and B is a non-paper passing portion at that time. The paper passing section A has resistors 33 to 3
7, resistors 31 and 32 are located in the non-sheet passing portion B,
Each of the resistors 31 to 37 generates heat.
【００１６】この場合、非通紙部Ｂの温度が上昇すると
抵抗３１、３２の抵抗値が増加するので、非通紙部Ｂの
発熱が抑制される。一方、通紙部Ａの抵抗３３〜３７に
流れる電流は、抵抗３１、３２の抵抗値が大きくなって
も変化せず発熱量は変わらない。したがって、通紙部Ａ
を定着温度に維持するために制御しても非通紙部Ｂの温
度が上昇することはない。In this case, when the temperature of the non-sheet passing portion B increases, the resistance values of the resistors 31 and 32 increase, so that the heat generation of the non-sheet passing portion B is suppressed. On the other hand, the current flowing through the resistors 33 to 37 of the sheet passing portion A does not change even if the resistances of the resistors 31 and 32 increase, and the amount of generated heat does not change. Therefore, the paper passing section A
Is controlled to maintain the fixing temperature at the fixing temperature, the temperature of the non-sheet passing portion B does not increase.
【００１７】図７は本発明の定着装置における発熱体の
温度上昇による抵抗値の変動を示す図である。図の曲線
βで示されるような温度依存性を示す抵抗３１〜３７を
使用すると、温度を一定温度Ｔに維持することができる
だけでなく、紙幅方向の温度ムラの発生を抑制すること
ができる。FIG. 7 is a diagram showing a change in resistance value due to a rise in the temperature of the heating element in the fixing device of the present invention. The use of the resistors 31 to 37 exhibiting the temperature dependence as shown by the curve β in the drawing not only can maintain the temperature at the constant temperature T but also can suppress the occurrence of temperature unevenness in the paper width direction.
【００１８】また、電極２６Ａ、２６Ｂは発熱体２７の
外部に配設することができ、また、複数本の対の構成す
ることもできる。このように、電極２６Ａ、２６Ｂ間に
電圧を印加して定着温度になるまで加熱し、その後は図
示しないサーミスタ等によって定着温度を維持するよう
に制御が行われる。The electrodes 26A and 26B can be disposed outside the heating element 27, and a plurality of pairs can be formed. As described above, a voltage is applied between the electrodes 26A and 26B to heat until the fixing temperature is reached, and thereafter control is performed by a thermistor (not shown) or the like to maintain the fixing temperature.
【００１９】さらに、上記発熱体２７としてチタン酸バ
リウムを主体としたセラミックを使用すれば自己温度制
御作用によってサーミスタ等を不要にすることもでき
る。なお、本発明は上記実施例に限定されるものではな
く、本発明の趣旨に基づいて種々変形させることが可能
であり、それらを本発明の範囲から排除するものではな
い。Furthermore, if a ceramic mainly composed of barium titanate is used as the heating element 27, a thermistor or the like can be made unnecessary by the self-temperature control action. It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.
【００２０】[0020]
【発明の効果】以上詳細に説明したように、本発明によ
れば、定着装置は、回転自在に配設されたローラ、該ロ
ーラと対向させて配設され、上記ローラの軸方向に延在
させて長尺状に形成され、かつ、温度の上昇に伴って抵
抗が大きくなる特性を有する発熱体、及び該発熱体の長
手方向に延在させて配設され、上記発熱体と共にヒータ
部を構成する電極を備え、紙送りを行うとともに紙上の
トナーを定着する。As described above in detail, according to the present invention, the fixing device is provided with a rotatably disposed roller, disposed opposite to the roller, and extending in the axial direction of the roller. A heating element having a characteristic that the resistance increases with an increase in temperature; and a heating element that is disposed so as to extend in the longitudinal direction of the heating element, and includes a heater section together with the heating element. It comprises the constituent electrodes, feeds the paper and fixes the toner on the paper.
【００２１】そして、上記電極には、紙送り方向に対し
て平行な向きの電流を上記発熱体に流すための電圧が印
加され、上記ヒータ部は紙送り方向において固定され
る。この場合、温度の上昇に伴って発熱体における非通
紙部に対応する部分の抵抗が大きくなり、流れる電流が
少なくなるので、非通紙部の温度が上昇するのを抑制す
ることができる。したがって、紙幅の狭い紙を連続して
通紙させても、紙幅方向において発熱体を均一な温度に
することができる。A voltage is applied to the electrodes so that a current in a direction parallel to the paper feeding direction flows through the heating element, and the heater is fixed in the paper feeding direction. In this case, as the temperature rises, the resistance of the portion of the heating element corresponding to the non-sheet passing portion increases, and the flowing current decreases, so that the temperature of the non-sheet passing portion can be suppressed from rising. Therefore, even when narrow paper is continuously passed, the heating element can be kept at a uniform temperature in the paper width direction.
【図１】本発明の定着装置を説明するための前提とな
る、バックアップローラと対向させて配設されたヒート
ローラの断面図である。FIG. 1 is a cross-sectional view of a heat roller disposed opposite to a backup roller, which is a premise for describing a fixing device of the present invention.
【図２】従来の定着装置の概略図である。FIG. 2 is a schematic diagram of a conventional fixing device.
【図３】従来の定着装置における発熱体の回路モデルを
示す図である。FIG. 3 is a diagram illustrating a circuit model of a heating element in a conventional fixing device.
【図４】発熱体の温度上昇による抵抗値の変動を示す図
である。FIG. 4 is a diagram showing a change in resistance value due to a temperature rise of a heating element.
【図５】ヒートローラの要部破断図である。FIG. 5 is a cutaway view of a main part of the heat roller.
【図６】本発明の定着装置における発熱体の回路モデル
を示す図である。FIG. 6 is a diagram showing a circuit model of a heating element in the fixing device of the present invention.
【図７】本発明の定着装置における発熱体の温度上昇に
よる抵抗値の変動を示す図である。FIG. 7 is a diagram showing a change in resistance value due to a temperature rise of a heating element in the fixing device of the present invention.
１ ヒートローラ ２ バックアップローラ ４ 金属製パイプ ５ 電気絶縁層 ８ 離型層 ２６Ａ、２６Ｂ 電極 ２６Ａ1 、２６Ｂ1 リング状部 ２６Ａ2 、２６Ｂ2 帯状部 ２７ 発熱体 ３１〜３７ 抵抗1 Heat roller 2 backup roller 4 metal pipe 5 electrically insulating layer 8 release layer 26A, 26B electrodes 26A 1, 26B 1 ring section 26A 2, 26B 2 belt portion 27 heating elements 31 to 37 resistor
フロントページの続き (56)参考文献 特開 昭61−148477（ＪＰ，Ａ) 特開 昭61−148476（ＪＰ，Ａ) 特開 昭58−194074（ＪＰ，Ａ)Continuation of the front page (56) References JP-A-61-148477 (JP, A) JP-A-61-148476 (JP, A) JP-A-58-194074 (JP, A)
Claims (1)
と対向させて配設され、上記ローラの軸方向に延在させ
て長尺状に形成され、かつ、温度の上昇に伴って抵抗が
大きくなる特性を有する発熱体、及び該発熱体の長手方
向に延在させて配設され、上記発熱体と共にヒータ部を
構成する電極を備え、紙送りを行うとともに紙上のトナ
ーを定着する定着装置において、 （ａ）上記電極には、紙送り方向に対して平行な向きの
電流を上記発熱体に流すための電圧が印加され、 （ｂ）上記ヒータ部は紙送り方向において固定されるこ
とを特徴とする定着装置。1. A roller rotatably disposed, disposed in opposition to the roller, formed in an elongated shape extending in the axial direction of the roller, and having a resistance as the temperature rises. A heating element having a characteristic of increasing the size of the heating element, and an electrode disposed to extend in the longitudinal direction of the heating element and constituting a heater section together with the heating element. In the apparatus, (a) a voltage is applied to the electrode so that a current in a direction parallel to a paper feeding direction is applied to the heating element, and (b) the heater is fixed in the paper feeding direction. A fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071027A JP2708641B2 (en) | 1991-04-03 | 1991-04-03 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071027A JP2708641B2 (en) | 1991-04-03 | 1991-04-03 | Fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04305679A JPH04305679A (en) | 1992-10-28 |
| JP2708641B2 true JP2708641B2 (en) | 1998-02-04 |
Family
ID=13448636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3071027A Expired - Lifetime JP2708641B2 (en) | 1991-04-03 | 1991-04-03 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2708641B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722025A (en) * | 1995-10-24 | 1998-02-24 | Minolta Co., Ltd. | Fixing device |
| US6239411B1 (en) * | 1995-10-27 | 2001-05-29 | Minolta Co., Ltd. | Fixing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58194074A (en) * | 1982-05-10 | 1983-11-11 | Konishiroku Photo Ind Co Ltd | Fixing device |
| JPS61148476A (en) * | 1984-12-21 | 1986-07-07 | Canon Inc | Roller for heat fixing and fixing device having said roller |
| JPH0711729B2 (en) * | 1984-12-21 | 1995-02-08 | キヤノン株式会社 | Roller for heat fixing and fixing device having the same |
-
1991
- 1991-04-03 JP JP3071027A patent/JP2708641B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04305679A (en) | 1992-10-28 |
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