JP2002184554A - Heating device and fixing device as well as image forming device using it - Google Patents
Heating device and fixing device as well as image forming device using itInfo
- Publication number
- JP2002184554A JP2002184554A JP2001091553A JP2001091553A JP2002184554A JP 2002184554 A JP2002184554 A JP 2002184554A JP 2001091553 A JP2001091553 A JP 2001091553A JP 2001091553 A JP2001091553 A JP 2001091553A JP 2002184554 A JP2002184554 A JP 2002184554A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- auxiliary
- heating
- auxiliary power
- heating element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば各種材料
や装置を加熱する加熱装置とそれを使用した定着装置及
び電子写真方式を使用した複写機やプリンタ装置，ファ
クシミリ装置等の画像形成装置、特に省電力の効率化に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus for heating various materials and apparatuses, a fixing apparatus using the same, and an image forming apparatus such as a copying machine, a printer apparatus, a facsimile apparatus, etc. using an electrophotographic system, in particular. It is related to power saving efficiency.
【０００２】[0002]
【従来の技術】複写機やプリンタ装置等の画像形成装置
は普通紙やＯＨＰ等の記録媒体上に画像を形成する。こ
の画像形成装置は、画像形成の高速性や画像品質，コス
トなどから電子写真方式が採用されている。電子写真方
式は記録媒体上にトナー像を形成し、形成したトナー像
を熱と圧力で記録媒体に定着する方法であり、定着方式
としては安全性等の面からヒートローラ方式が現在最も
多く採用されている。ヒートローラ方式は、ハロゲンヒ
ータなどの発熱部材により加熱される加熱ローラと、加
熱ローラに対向配置される加圧ローラを圧接してニップ
部と呼ばれる相互圧接部を形成し、このニップ部にトナ
ー像が転写された記録媒体を通して加熱する方法であ
る。2. Description of the Related Art An image forming apparatus such as a copying machine or a printer forms an image on a recording medium such as plain paper or OHP. This image forming apparatus employs an electrophotographic method from the viewpoint of high-speed image formation, image quality, cost, and the like. The electrophotographic method is a method in which a toner image is formed on a recording medium, and the formed toner image is fixed on the recording medium by heat and pressure. As a fixing method, a heat roller method is currently most frequently used in terms of safety and the like. Have been. In the heat roller method, a heating roller heated by a heat-generating member such as a halogen heater and a pressure roller arranged opposite to the heating roller are pressed against each other to form a mutual pressing portion called a nip portion, and a toner image is formed on the nip portion. Is a method of heating through a recording medium on which is transferred.
【０００３】近年、環境問題が重要となり、複写機やプ
リンタ装置等の画像形成装置も省エネルギ化が進んでい
る。この画像形成装置の省エネルギを考えるに当たって
無視できないのは、トナーを記録媒体に定着する定着装
置の省電力である。画像形成装置の待機時における定着
装置の消費電力の低減としては、待機時には加熱ローラ
の温度を定着温度よりやや低い一定の温度に保つことに
より、使用時に直ちに使用可能温度まで立ち上げ、使用
者が定着ローラの昇温を待つことがないようにしてい
る。この場合、定着装置を使用していないときにもある
程度の電力を供給して余分なエネルギを消費していた。
この待機時の消費エネルギは機器の消費エネルギの約７
割から８割に上がると言われている。In recent years, environmental problems have become important, and energy saving has also been progressing in image forming apparatuses such as copiers and printers. In considering the energy saving of the image forming apparatus, what cannot be ignored is the power saving of the fixing device that fixes the toner on the recording medium. In order to reduce the power consumption of the fixing device during standby of the image forming apparatus, the temperature of the heating roller is maintained at a fixed temperature slightly lower than the fixing temperature during standby, so that the temperature immediately rises to the usable temperature at the time of use, and the user can use the device. It does not wait for the temperature of the fixing roller to rise. In this case, even when the fixing device is not used, a certain amount of power is supplied to consume extra energy.
The energy consumption during this standby is about 7% of the energy consumption of the equipment.
It is said to rise from 80% to 80%.
【０００４】この待機時の消費エネルギを削減してより
省電力化を図ることが望まれ、未使用時には電力供給を
ゼロにすることが求められてきている。しかしながら待
機時にエネルギ消費をゼロにすると、加熱ローラは鉄や
アルミなどの金属ローラを主に使用しており熱容量が大
きいため、約180℃前後の使用可能温度にまで昇温する
には数分から十数分など長い加熱時間が必要であり、使
用者の使い勝手が悪化してしまう。加熱ローラの昇温時
間を短くするためには、単位時間の投入エネルギすなわ
ち定格電力を大きくすると良い。実際に、プリント速度
の速い高速機には電源電圧を200Ｖにして対応している
装置も多い。しかし、日本国内の一般的なオフィスで
は、商用電源は100Ｖ15Ａであり、200Ｖに対応させるに
は設置場所の電源関連に特別な工事を施す必要があり一
般的な解決法とはいえない。このため、加熱ローラを短
時間で昇温させようとしても、最大投入エネルギーが電
源により決まってしまっていた。[0004] It is desired to reduce the energy consumption during standby to achieve more power saving, and it is required to reduce the power supply to zero when not in use. However, if the energy consumption is reduced to zero during standby, the heating roller mainly uses a metal roller such as iron or aluminum and has a large heat capacity, so it takes several minutes to 10 minutes to raise the temperature to a usable temperature of about 180 ° C. A long heating time such as several minutes is required, and the usability of the user deteriorates. In order to shorten the heating time of the heating roller, it is preferable to increase the input energy per unit time, that is, the rated power. In fact, many high-speed machines with a high printing speed are compatible with a power supply voltage of 200 V. However, in a general office in Japan, the commercial power supply is 100 V and 15 A, and it is not a general solution since it is necessary to perform a special work on a power supply in an installation place to support 200 V. For this reason, even if an attempt is made to raise the temperature of the heating roller in a short time, the maximum input energy has been determined by the power supply.
【０００５】これを改善するために例えば特開平10−10
913号公報に示されているように、定着装置が待機状態
になったときに一定レベルだけ低い電圧を加熱ローラに
供給して定着装置の温度が下がることを遅らせたり、特
開平10−282821号公報に示すように、定着装置の待機時
に補助電源である二次電池を充電し、定着装置を立ち上
げたときに主電源装置と二次電池や一次電池から電力を
供給して立上り時間を短縮するようにしたりしている。In order to improve this, for example, Japanese Patent Application Laid-Open No. 10-10
As shown in Japanese Patent Application Laid-Open No. 913, when the fixing device enters a standby state, a voltage lower by a certain level is supplied to the heating roller to delay the decrease in the temperature of the fixing device. As shown in the official gazette, the secondary battery as an auxiliary power supply is charged when the fixing device is on standby, and when the fixing device is started up, power is supplied from the main power supply device and the secondary battery or the primary battery to shorten the rise time. And so on.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら特開平10
−10913号公報に示された定着装置は待機時においても
定着装置に一定レベルだけ低い電圧を供給しているた
め、十分な省電力とはいえない。また、立ち上げ時の最
大供給電力を主電源装置から供給する電力より高めるこ
とを主にしたものではない。特開平10−282821号公報に
示された定着装置は、立ち上げ時に主電源装置と二次電
池や一次電池から電力を供給しているが、二次電源とし
ては一般にカドニカ電池や鉛蓄電池が使用され、この二
次電池は充放電を何回も繰り返すと容量が劣化し低下し
ていき、大電流で放電するほど寿命は短いという性質を
持つ。一般的に大電流で長寿命とされているカドニカ電
池でも充放電の繰り返し回数は約500〜1000回程度であ
り、一日に20回の充放電を繰り返すと一ヶ月程度で電池
の寿命が来てしまうことになり、交換の手間がかかり、
交換する電池代などのランニングコストも非常に高くつ
くという短所がある。さらに鉛蓄電池は液体の硫酸を使
用するなどのオフィス用機器としては好ましくない。SUMMARY OF THE INVENTION
The fixing device disclosed in JP-A-1010913 supplies a low voltage to the fixing device by a certain level even in a standby state, and therefore cannot be said to have sufficient power saving. Further, it is not intended to mainly increase the maximum supply power at the time of startup than the power supplied from the main power supply device. The fixing device disclosed in Japanese Patent Application Laid-Open No. H10-282821 supplies power from a main power supply and a secondary battery or a primary battery at the time of startup, but a CADNICA battery or a lead storage battery is generally used as a secondary power supply. However, the capacity of this secondary battery deteriorates and deteriorates when charging and discharging are repeated many times, and has a property that the life is shorter as the secondary battery is discharged with a larger current. Even with CADNICA batteries, which are generally regarded as having a long life at large currents, the number of repetitions of charge / discharge is about 500 to 1000 times, and if the charge / discharge is repeated 20 times a day, the battery life will be about 1 month. It takes time and effort to exchange,
The disadvantage is that the running cost of replacing the battery is very high. Furthermore, lead storage batteries are not preferred as office equipment such as those using liquid sulfuric acid.
【０００７】また、大電力の供給を開始したり停止する
際の急激な電流変化や突入電力等により被加熱回路への
負荷が増大するとともに周辺回路にも投入電流が流れノ
イズが発生するという問題がある。このため大容量の補
助電源からの電力供給は頻繁なオン／オフは好ましくな
い。また、大容量の電力を一度に供給すると供給過剰に
なり被加熱回路の温度が上昇しすぎる可能性もある。In addition, the load on the circuit to be heated increases due to a sudden change in current when starting or stopping the supply of a large amount of power or inrush power, and the input current also flows into the peripheral circuits to generate noise. There is. For this reason, frequent on / off of power supply from a large-capacity auxiliary power supply is not preferable. Further, if a large amount of electric power is supplied at one time, the supply becomes excessive and the temperature of the circuit to be heated may be too high.
【０００８】この発明はかかる短所を改善し、省電力効
果を高めるとともに大電力を供給する際の突入電流や急
激な電流変化によるノイズを低減し、かつ立上り時間を
短縮し、温度が上がりすぎることを防止することができ
る加熱装置とそれを使用した定着装置及び画像形成装置
を提供することを目的とするものである。The present invention improves such disadvantages, enhances the power saving effect, reduces noise due to inrush current and sudden current change when supplying large power, shortens the rise time, and increases the temperature too much. It is an object of the present invention to provide a heating device capable of preventing the occurrence of a fouling, a fixing device and an image forming device using the same.
【０００９】[0009]
【課題を解決するための手段】この発明に係る加熱装置
は、加熱部と主電源装置と補助電源装置と充電器と切替
装置及び制御部を有し、加熱部は主電源装置から供給さ
れる電力により発熱する主発熱体と、補助電源装置から
供給される電力により発熱する補助発熱体を有し、補助
電源装置は充放電可能なコンデンサを有し、充電器は主
電源装置から供給される電力で補助電源装置のコンデン
サを充電し、切替装置は補助電源装置の充電と補助電源
装置からの補助発熱体に対する電力供給を切え替え、制
御部は補助電源装置から補助発熱体に供給する電力量を
調整することを特徴とする。A heating device according to the present invention has a heating section, a main power supply, an auxiliary power supply, a charger, a switching device, and a control section, and the heating section is supplied from the main power supply. A main heating element that generates heat by electric power; an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply; the auxiliary power supply includes a chargeable / dischargeable capacitor; and a charger is supplied from the main power supply. The power supply charges the capacitor of the auxiliary power supply, the switching device switches between charging of the auxiliary power supply and power supply from the auxiliary power supply to the auxiliary heating element, and the control unit supplies power from the auxiliary power supply to the auxiliary heating element. It is characterized in that the amount is adjusted.
【００１０】上記制御部は補助電源装置から補助発熱体
に電力の供給を開始した時からあらかじめ定めた一定時
間経過したときに補助電源装置から補助発熱体に供給し
ている電力を遮断すると良い。また、切替装置は補助電
源装置から補助発熱体に供給している電力を遮断してい
るときに補助電源装置を充電器に接続して補助電源装置
をのコンデンサを充電すると良い。Preferably, the control section cuts off the power supplied from the auxiliary power supply to the auxiliary heating element when a predetermined period of time has elapsed since the supply of power from the auxiliary power supply to the auxiliary heating element. The switching device may connect the auxiliary power supply to a charger and charge a capacitor of the auxiliary power supply when the power supplied from the auxiliary power supply to the auxiliary heating element is cut off.
【００１１】この発明に係る第２の加熱装置は、加熱部
と主電源装置と補助電源装置と充電器と切替装置と残電
力検知装置及び制御部を有し、加熱部は主電源装置から
供給される電力により発熱する主発熱体と、補助電源装
置から供給される電力により発熱する補助発熱体を有
し、補助電源装置は充放電可能なコンデンサを有し、充
電器は主電源装置から供給される電力で補助電源装置の
コンデンサを充電し、切替装置は補助電源装置の充電と
補助電源装置からの補助発熱体に対する電力供給を切え
替え、残電力検知装置は補助電源装置は保有する電力量
を検出し、制御部は残電力検知装置で検出している補助
電源装置の保有電力量に応じて補助電源装置から補助発
熱体に供給する電力量を調整することを特徴とする。A second heating device according to the present invention has a heating unit, a main power supply device, an auxiliary power supply device, a charger, a switching device, a remaining power detection device, and a control unit, and the heating unit is supplied from the main power supply device. A main heating element that generates heat by the supplied power and an auxiliary heating element that generates heat by the power supplied from the auxiliary power supply, the auxiliary power supply has a chargeable / dischargeable capacitor, and the charger is supplied from the main power supply. The capacitor of the auxiliary power supply is charged with the power supplied, the switching device switches the charging of the auxiliary power supply and the power supply from the auxiliary power supply to the auxiliary heating element, and the remaining power detection device has the power held by the auxiliary power supply. The control unit adjusts the amount of power supplied from the auxiliary power supply to the auxiliary heating element according to the amount of power held by the auxiliary power supply detected by the remaining power detection device.
【００１２】上記制御部は残電力検知装置で検出してい
る補助電源装置の保有電力量があらかじめ定めた一定値
に低下したときに、補助電源装置から補助発熱体に供給
している電力を遮断するThe control unit shuts off power supplied from the auxiliary power supply to the auxiliary heating element when the amount of power held by the auxiliary power supply detected by the remaining power detection device decreases to a predetermined constant value. Do
【００１３】この発明に係る第３の加熱装置は、加熱部
と主電源装置と補助電源装置と充電器と切替装置と温度
検知装置及び制御部を有し、加熱部は主電源装置から供
給される電力により発熱する主発熱体と、補助電源装置
から供給される電力により発熱する補助発熱体を有し、
補助電源装置は充放電可能なコンデンサを有し、充電器
は主電源装置から供給される電力で補助電源装置のコン
デンサを充電し、切替装置は補助電源装置の充電と補助
電源装置からの補助発熱体に対する電力供給を切え替
え、温度検知装置は加熱部の温度を検出し、制御部は温
度検知装置で検出している加熱部の温度に応じて補助電
源装置から補助発熱体に供給する電力量を調整すること
を特徴とする。A third heating device according to the present invention has a heating unit, a main power supply device, an auxiliary power supply device, a charger, a switching device, a temperature detection device, and a control unit, and the heating unit is supplied from the main power supply device. A main heating element that generates heat by electric power, and an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply,
The auxiliary power supply has a chargeable / dischargeable capacitor, the charger charges the auxiliary power supply capacitor with power supplied from the main power supply, and the switching device charges the auxiliary power supply and generates auxiliary heat from the auxiliary power supply. The power supply to the body is switched, the temperature detection device detects the temperature of the heating section, and the control section controls the power supplied from the auxiliary power supply to the auxiliary heating element according to the temperature of the heating section detected by the temperature detection device. It is characterized in that the amount is adjusted.
【００１４】この発明に係る第４の加熱装置は、加熱部
と主電源装置と補助電源装置と充電器と切替装置及び温
度制御装置を有し、加熱部は主電源装置から供給される
電力により発熱する主発熱体と、補助電源装置から供給
される電力により発熱する補助発熱体を有し、補助電源
装置は充放電可能なコンデンサを有し、充電器は主電源
装置から供給される電力で補助電源装置のコンデンサを
充電し、切替装置は補助電源装置の充電と補助電源装置
からの補助発熱体に対する電力供給を切え替え、温度制
御装置は加熱部の温度変化により補助電源装置から補助
発熱体に供給する電力量を調整することを特徴とする。A fourth heating device according to the present invention has a heating section, a main power supply, an auxiliary power supply, a charger, a switching device, and a temperature control device, and the heating section is powered by power supplied from the main power supply. It has a main heating element that generates heat and an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply, the auxiliary power supply has a chargeable / dischargeable capacitor, and the charger uses electric power supplied from the main power supply. The capacitor of the auxiliary power supply is charged, the switching device switches the charging of the auxiliary power supply and the power supply from the auxiliary power supply to the auxiliary heating element, and the temperature control device generates the auxiliary heat from the auxiliary power supply due to the temperature change of the heating section. It is characterized in that the amount of power supplied to the body is adjusted.
【００１５】上記補助電源装置は複数のセルで構成し、
使用時に接続切替装置で複数のセルを直列に接続すると
良い。[0015] The auxiliary power supply device includes a plurality of cells,
A plurality of cells may be connected in series by a connection switching device during use.
【００１６】また、補助電源装置の複数のセルを充填す
るときに、各セルを順次充電すると良い。When a plurality of cells of the auxiliary power supply are filled, it is preferable to charge each cell sequentially.
【００１７】さらに、補助電源装置の複数のセルを充電
するときに、接続切替装置で各セルを並列に接続して同
時に充電しても良い。Further, when charging a plurality of cells of the auxiliary power supply, each cell may be connected in parallel by a connection switching device and charged at the same time.
【００１８】この発明の定着装置は、上記いずれかの加
熱装置を有し、定着ローラに加熱部を内蔵したことを特
徴とする。A fixing device according to the present invention includes any one of the above-mentioned heating devices, and has a heating unit built in the fixing roller.
【００１９】この発明に係る画像形成装置は、上記定着
装置を有し、電子写真方式で形成したトナー像を記録部
材に加熱溶着させることを特徴とする。An image forming apparatus according to the present invention includes the fixing device described above, and heats and fuses a toner image formed by an electrophotographic method to a recording member.
【００２０】[0020]
【発明の実施の形態】この発明の加熱装置は、加熱部と
主電源装置と補助電源装置とメインスイッチと充電器と
切替装置及び制御部を有する。加熱部は主電源装置から
供給される電力により発熱する主発熱体と、補助電源装
置から供給される電力により発熱する補助発熱体を有
し、被加熱体を加熱する。補助電源装置は充放電可能な
コンデンサを有する。メインスイッチは主電源装置から
主発熱体に供給する電力をオン／オフする。充電器は主
電源装置から供給される電力でコンデンサを有する補助
電源装置を充電する。切替装置は補助電源装置の充電と
補助電源装置からの補助発熱体に対する電力供給を切え
替る。制御部はあらかじめ設定された条件で補助電源装
置４から補助発熱体に供給する電力をオン／オフ制御す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS A heating apparatus according to the present invention has a heating section, a main power supply, an auxiliary power supply, a main switch, a charger, a switching device, and a control section. The heating unit has a main heating element that generates heat by electric power supplied from the main power supply device, and an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply device, and heats the object to be heated. The auxiliary power supply has a chargeable / dischargeable capacitor. The main switch turns on / off power supplied from the main power supply to the main heating element. The charger charges an auxiliary power supply having a capacitor with power supplied from the main power supply. The switching device switches charging of the auxiliary power supply and power supply from the auxiliary power supply to the auxiliary heating element. The control unit controls on / off of the power supplied from the auxiliary power supply device 4 to the auxiliary heating element under a preset condition.
【００２１】この加熱装置においては、待機時に切替装
置を切替て補助電源装置に充電器を接続し、補助電源装
置を充電しておく。この状態で加熱装置で加熱部を加熱
するときは、メインスイッチをオンにして主電源装置か
ら主発熱体に電力を供給し、同時に切替装置を切替て補
助電源装置から補助発熱体に電力を供給して、加熱部に
大容量の電力を供給し、加熱部を短時間で所定の温度に
立ち上げる。このように補助電源装置で補助発熱体に電
力を供給して加熱を開始してから、あらかじめ定めた所
定の時間が経過したときに、制御部は補助電源装置から
補助発熱体に供給している電力を遮断して加熱部の過熱
を防止して所定の温度に維持させる。In this heating device, the switching device is switched during standby and the charger is connected to the auxiliary power supply to charge the auxiliary power supply. When the heating unit is heated by the heating device in this state, the main switch is turned on to supply power from the main power supply to the main heating element, and simultaneously, the switching device is switched to supply power from the auxiliary power supply to the auxiliary heating element. Then, a large amount of electric power is supplied to the heating unit, and the heating unit is started up to a predetermined temperature in a short time. The control unit supplies the auxiliary heating element from the auxiliary power supply when a predetermined period of time elapses after the auxiliary power supply supplies power to the auxiliary heating element and starts heating. The power is cut off to prevent overheating of the heating unit and maintain a predetermined temperature.
【００２２】[0022]
【実施例】図１はこの発明の一実施例の構成を示す回路
図である。図に示すように、加熱装置１は、加熱部２と
主電源装置３と補助電源装置４とメインスイッチ５と充
電器６と切替装置７及び制御部８を有する。加熱部２は
主電源装置３から供給される電力により発熱する主発熱
体２ａと、補助電源装置４から供給される電力により発
熱する補助発熱体２ｂを有し、被加熱体を加熱する。主
電源装置３は加熱装置１の設置場所に備えられているコ
ンセントなどに接続され、加熱部２に応じた電圧の調整
及び交流と直流の整流などの機能を有しいる。補助電源
装置４は充放電可能なコンデンサを有する。この補助電
源装置４のコンデンサとしては、例えば日本ケミコン
（株）で開発した電気二重層コンデンサ等の2000Ｆ程度
の静電容量を有し、数秒から数10秒の電力供給には十分
な容量を備えている物や、例えば日本電気（株）の商品
名「ハイパーキャパシタ」という80Ｆ程度のコンデンサ
を使用する。メインスイッチ５は主電源装置３から主発
熱体２ａに供給する電力をオン／オフする。充電器６は
主電源装置３から供給される電力でコンデンサを有する
補助電源装置４を充電する。切替装置７は補助電源装置
４の充電と補助電源装置４からの補助発熱体２ｂに対す
る電力供給を切え替る。制御部８はスイッチ９とＣＰＵ
１０を有し、あらかじめ設定された条件で補助電源装置
４から補助発熱体２ｂに供給する電力をオン／オフ制御
する。FIG. 1 is a circuit diagram showing a configuration of an embodiment of the present invention. As shown in the figure, the heating device 1 includes a heating unit 2, a main power supply device 3, an auxiliary power supply device 4, a main switch 5, a charger 6, a switching device 7, and a control unit 8. The heating unit 2 has a main heating element 2a that generates heat by electric power supplied from the main power supply device 3 and an auxiliary heating element 2b that generates heat by electric power supplied from the auxiliary power supply device 4, and heats the object to be heated. The main power supply device 3 is connected to an outlet provided at a place where the heating device 1 is installed, and has functions such as voltage adjustment according to the heating unit 2 and rectification of AC and DC. The auxiliary power supply 4 has a chargeable / dischargeable capacitor. The capacitor of the auxiliary power supply 4 has a capacitance of about 2000F, such as an electric double layer capacitor developed by Nippon Chemi-Con Corporation, and has a sufficient capacity for power supply for several seconds to several tens of seconds. For example, a capacitor of about 80F called "Hypercapacitor" (trade name of NEC Corporation) is used. The main switch 5 turns on / off the power supplied from the main power supply 3 to the main heating element 2a. The charger 6 charges the auxiliary power supply 4 having a capacitor with the power supplied from the main power supply 3. The switching device 7 switches charging of the auxiliary power supply 4 and power supply from the auxiliary power supply 4 to the auxiliary heating element 2b. The control unit 8 includes a switch 9 and a CPU.
10 for controlling on / off the power supplied from the auxiliary power supply device 4 to the auxiliary heating element 2b under a preset condition.
【００２３】上記のように構成した加熱装置１において
は、待機時に切替装置７を切替て補助電源装置４に充電
器６を接続し、補助電源装置４を充電しておく。この状
態で加熱装置１で加熱部２を加熱するときは、メインス
イッチ５をオンにして主電源装置３から主発熱体２ａに
電力を供給し、同時に切替装置７を切替て補助電源装置
４から補助発熱体２ｂに電力を供給して、加熱部２に大
容量の電力を供給する。このように加熱部２の加熱を開
始するときに、主電源装置３と補助電源装置４の両方か
ら大容量の電力を加熱部２に供給するから、加熱部２を
短時間で所定の温度に立ち上げることができる。In the heating device 1 configured as described above, the switching device 7 is switched during standby, the charger 6 is connected to the auxiliary power device 4, and the auxiliary power device 4 is charged. When the heating unit 2 is heated by the heating device 1 in this state, the main switch 5 is turned on to supply electric power from the main power supply device 3 to the main heating element 2a. Power is supplied to the auxiliary heating element 2 b to supply a large amount of power to the heating unit 2. As described above, when the heating of the heating unit 2 is started, a large amount of electric power is supplied from both the main power supply device 3 and the auxiliary power supply device 4 to the heating unit 2, so that the heating unit 2 is heated to a predetermined temperature in a short time. Can be launched.
【００２４】補助電源装置４で加熱部２の補助発熱体２
ｂに電力を供給して加熱を開始してからあらかじめ定め
た所定の時間が経過したときに、制御部８は補助電源装
置４から補助発熱体２ｂに供給している電力を遮断して
加熱部２の過熱を防止して所定の温度に維持させる。補
助電源装置４から補助発熱体２ｂに供給している電力は
供給を開始してから時間が経過するにしたがって低減す
る。この供給電力の低減量に応じて補助電源装置４から
補助発熱体２ｂに供給している電力を遮断する時間を定
めて、供給している電力がある程度低減したときに補助
電源装置４から補助発熱体２ｂに供給している電力を遮
断することにより、大電力を供給している状態で遮断す
るときに発生する周囲回路の各部品の劣化や電磁ノイズ
を防止することができる。The auxiliary heating element 2 of the heating unit 2 is
When a predetermined period of time elapses after the power is supplied to the heating unit b and the heating is started, the control unit 8 cuts off the power supplied from the auxiliary power supply device 4 to the auxiliary heating element 2b, and 2 is maintained at a predetermined temperature by preventing overheating. The power supplied from the auxiliary power supply device 4 to the auxiliary heating element 2b decreases as time elapses from the start of the supply. A time period during which the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b is cut off in accordance with the reduction amount of the supplied power is determined. By shutting off the electric power supplied to the body 2b, it is possible to prevent the deterioration of each component of the peripheral circuit and the electromagnetic noise that occur when the electric power is shut off while the large electric power is being supplied.
【００２５】このように補助電源装置４から補助発熱体
２ｂに供給している電力を遮断したとき、補助電源装置
４には十分に充電されていない状態となる。そこで加熱
部２の温度が安定して比較的電力を消費しないときに、
切替装置７を充電器６側に切替て補助電源装置４に充電
器６を接続して主電源装置３から供給される電力で補助
電源装置４を充電しておく。そして加熱部２に再度多量
の電力を供給する必要があるとき、主電源装置３ととも
に補助電源装置４から電力を供給して加熱部２に多量の
エネルギを供給する。When the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b is cut off, the auxiliary power supply 4 is not sufficiently charged. Therefore, when the temperature of the heating unit 2 is stable and consumes relatively little power,
The switching device 7 is switched to the charger 6 side, the charger 6 is connected to the auxiliary power supply 4, and the auxiliary power supply 4 is charged with the power supplied from the main power supply 3. When a large amount of electric power needs to be supplied to the heating unit 2 again, electric power is supplied from the auxiliary power supply unit 4 together with the main power supply unit 3 to supply a large amount of energy to the heating unit 2.
【００２６】この補助電源装置４に有するコンデンサは
二次電池と異なり、化学反応を伴わないため次ぎのよう
な優れた特徴を有する。すなわち二次電池として一般的
なニッケル−カドミウム電池を用いた補助電源装置で
は、急速充電を行っても数時間の時間を有するが、コン
デンサを用いた補助電源装置４では数分程度の急速な充
電が可能であり、同一時間内で待機状態と加熱状態を繰
返した場合、コンデンサを用いた補助電源装置４を使用
することにより、加熱立ち上げ時に確実に補助電源装置
４から電力を供給することができ、加熱部２を短時間で
所定の温度に立ち上げることができる。また、ニッケル
−カドミウム電池は充放電の許容繰り返し回数が500回
ら1000回程度であるため加熱時用の補助電源としては寿
命が短く、交換の手間やコストが問題となる。これに対
してコンデンサを用いた補助電源装置４は充放電の許容
繰り返し回数が１万回以上であるとともに、充放電の繰
り返しによる劣化も少なく、さらに、鉛蓄電池のように
液交換や補充なども必要ないため、メンテナンスをほと
んど必要とせず、長期間安定して使用することができ
る。Unlike the secondary battery, the capacitor included in the auxiliary power supply 4 does not involve a chemical reaction and has the following excellent characteristics. That is, an auxiliary power supply using a general nickel-cadmium battery as a secondary battery has a time of several hours even when quick charging is performed, whereas an auxiliary power supply 4 using a capacitor has a rapid charging time of about several minutes. When the standby state and the heating state are repeated within the same time, by using the auxiliary power supply 4 using the capacitor, it is possible to reliably supply the power from the auxiliary power supply 4 at the time of heating up. Thus, the heating unit 2 can be raised to a predetermined temperature in a short time. Further, since the nickel-cadmium battery has an allowable repetition number of charge / discharge of about 500 to 1000 times, it has a short life as an auxiliary power supply for heating, and has a problem of replacement labor and cost. On the other hand, the auxiliary power supply 4 using a capacitor has an allowable number of repetitions of charge / discharge of 10,000 or more, has little deterioration due to repetition of charge / discharge, and has a liquid exchange or replenishment like a lead storage battery. Since it is not necessary, it requires little maintenance and can be used stably for a long period of time.
【００２７】上記実施例は加熱部２と切替装置７の間に
制御部８を設けた場合について説明したが、図２の回路
図に示すように、ＣＰＵ１０と切替装置７を有する充放
電切替装置１１により補助電源装置４の充電と補助発熱
体２ｂに対する電力の供給を切替るようにしても良い。In the above embodiment, the case where the control unit 8 is provided between the heating unit 2 and the switching device 7 has been described. However, as shown in the circuit diagram of FIG. 11 may be used to switch between charging the auxiliary power supply 4 and supplying power to the auxiliary heating element 2b.
【００２８】また、上記実施例は補助電源装置４で補助
発熱体２ｂに電力を供給して加熱を開始してからあらか
じめ定めた所定の時間が経過したときに、制御部８で補
助電源装置４から補助発熱体２ｂに供給している電力を
遮断する場合について説明したが、図３の回路図に示す
ように、補助電源装置４の残電力を検出する残電力検知
部１２を設け、補助電源装置４で補助発熱体２ｂに電力
を供給しているときに、残電力検知部１２で検出してい
る補助電源装置４の残電力があらかじめ定めた基準電力
まで低下した場合に制御部８により補助電源装置４から
補助発熱体２ｂに供給している電力を遮断したり、図４
の回路図に示すように、充放電切替装置１１により補助
電源装置４から補助発熱体２ｂに供給している電力を遮
断するようにしても良い。In the above embodiment, when a predetermined period of time elapses after the auxiliary power supply 4 supplies power to the auxiliary heating element 2b and starts heating, the controller 8 controls the auxiliary power supply 4 Has been described, the remaining power detection unit 12 for detecting the remaining power of the auxiliary power supply device 4 is provided as shown in the circuit diagram of FIG. When power is being supplied to the auxiliary heating element 2b by the device 4, when the remaining power of the auxiliary power supply device 4 detected by the remaining power detection unit 12 decreases to a predetermined reference power, the control unit 8 assists. The power supply from the power supply device 4 to the auxiliary heating element 2b is interrupted,
As shown in the circuit diagram of FIG. 6, the power supplied from the auxiliary power supply device 4 to the auxiliary heating element 2b may be cut off by the charge / discharge switching device 11.
【００２９】このようにして補助電源装置４から補助発
熱体２ｂに供給している電力が一定値まで低減したとき
に、補助電源装置４から供給している電力を遮断するこ
とにより、大電力を供給している状態で遮断するときに
引き起こす周囲回路の各部品の劣化や電磁ノイズを確実
に防止することができる。As described above, when the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b is reduced to a certain value, the power supplied from the auxiliary power supply 4 is cut off, so that a large amount of power can be obtained. It is possible to reliably prevent the deterioration of the components of the peripheral circuit and the electromagnetic noise caused when the power supply is cut off in the supply state.
【００３０】また、図５の回路図に示すように、加熱部
２の温度を検出する例えばサーミスタや熱電対や放射温
度計等の温度検知部１３を設け、主電源装置３と補助電
源装置４で加熱部２の主発熱体２ａと補助発熱体２ｂに
電力を供給しているときの加熱部２の温度を温度検知部
１３で測定し、温度検知部１３で測定している加熱部２
の温度があらかじめ設定した所定の温度の上限値に達し
たときに、制御部８や充放電切替装置１１により補助電
源装置４から補助発熱体２ｂに供給している電力を遮断
しても良い。そして補助電源装置４から補助発熱体２ｂ
に供給している電力を遮断している間に補助電源装置４
を充電し、温度検知部１３で測定している加熱部２の温
度があらかじめ設定した所定の温度の下限値に達したと
きに、補助電源装置４から補助発熱体２ｂに再度電力を
供給する。As shown in the circuit diagram of FIG. 5, a temperature detecting unit 13 such as a thermistor, a thermocouple or a radiation thermometer for detecting the temperature of the heating unit 2 is provided, and the main power supply unit 3 and the auxiliary power supply unit 4 are provided. The temperature of the heating unit 2 when power is supplied to the main heating element 2a and the auxiliary heating element 2b of the heating unit 2 is measured by the temperature detection unit 13, and the heating unit 2 measured by the temperature detection unit 13
When the temperature reaches the predetermined upper limit of the predetermined temperature, the control section 8 or the charge / discharge switching device 11 may cut off the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b. Then, the auxiliary heating element 2b is supplied from the auxiliary power supply device 4.
Auxiliary power supply 4 while power supply to
When the temperature of the heating unit 2 measured by the temperature detection unit 13 reaches a predetermined lower limit of the predetermined temperature, the power is again supplied from the auxiliary power supply device 4 to the auxiliary heating element 2b.
【００３１】このように補助電源装置４から補助発熱体
２ｂに供給している電力をオン／オフ制御することによ
り、主電源装置３から主発熱体２ａに供給している電力
をオン／オフせずに加熱部２の温度を一定に維持して温
度が上がりすぎることを防止できる。By controlling on / off of the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b, the power supplied from the main power supply 3 to the main heating element 2a is turned on / off. Instead, the temperature of the heating unit 2 can be kept constant to prevent the temperature from rising too high.
【００３２】上記実施例は加熱部２の温度を温度検知部
１３で検出し、検出した温度により制御部８や充放電切
替装置１２により補助電源装置４から補助発熱体２ｂに
供給している電力をオン／オフ制御する場合について説
明したが、図６の回路図に示すように、加熱部２の近傍
にサーモスタット等の温度調整部１４を設け、加熱部２
の温度が設定温度まで上昇したときに温度調整部１５で
補助電源装置４から補助発熱体２ｂに供給している電力
を遮断するようにして、温度調整部１４で補助電源装置
４から供給している電力をオン／オフ制御するようにし
ても良い。また、温度調整部１４にサーモスタット等と
ともに温度ヒューズ等の過熱防止部材を設けると、加熱
部２の過熱をより確実に防止することができる。In the above embodiment, the temperature of the heating section 2 is detected by the temperature detecting section 13 and the electric power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b by the control section 8 and the charge / discharge switching device 12 based on the detected temperature. Has been described, the temperature adjustment unit 14 such as a thermostat is provided near the heating unit 2 as shown in the circuit diagram of FIG.
When the temperature has risen to the set temperature, the power supplied from the auxiliary power supply 4 to the auxiliary heating element 2b is cut off by the temperature control unit 15 and supplied from the auxiliary power supply 4 by the temperature control unit 14. On / off control of the electric power may be performed. If an overheat prevention member such as a temperature fuse is provided in the temperature adjustment section 14 together with a thermostat or the like, overheating of the heating section 2 can be more reliably prevented.
【００３３】また、図７に示すように、補助電源装置４
を直列に接続された複数のコンデンサ４ａ〜４ｎで構成
すると良い。このように補助電源装置４を複数のコンデ
ンサ４ａ〜４ｎで構成することにより、例えば、全体で
６０Ｖの補助電源装置４を作るときには１２Ｖのコンデ
ンサを５個直列に接続することで実現できる。また、補
助電源装置４の直列に接続されたコンデンサ４ａ〜４ｎ
の接続をオン，オフする切替スイッチ１５ａ，１５ｂ
と、各コンデンサ４ａ〜４ｎと充電器６との接続を切り
換える充填切替スイッチ１６，１７を設けることによ
り、各コンデンサ４ａ〜４ｎを別々に充電することがで
きる。すなわち、補助電源装置４の各コンデンサ４ａ〜
４ｎを充電するときは、切替装置７を充電器６がわに切
り替えて、切替スイッチ１５ａ，１５ｂをオフにし、充
填切替スイッチ１６，１７をコンデンサ４ａに接続する
ことによりコンデンサ４ａを充電する。コンデンサ４ａ
を完全に充電したら、充填切替スイッチ１６，１７をコ
ンデンサ４ｂに接続して充電する。このように充填切替
スイッチ１６，１７を順次切り替えてコンデンサ４ｎま
で順次充電し、全てのコンデンサ４ａ〜４ｎを完全に充
電したら、切替スイッチ１５ａ，１５ｂをオンにしてコ
ンデンサ４ａ〜４ｎを直列に接続する。そして加熱装置
1で加熱部２を加熱するときは、切替装置７を補助発熱
体２ｂ側に切り替え、切替スイッチ１６をコンデンサ４
ａに接続して補助電源装置４のコンデンサ４ａ〜４ｎか
ら補助発熱体２ｂに電力を供給する。このように直列に
接続された複数のコンデンサ４ａ〜４ｎから補助発熱体
２ｂに電力を供給することにより、高電圧の補助電源と
して利用することができる。また、各コンデンサ４ａ〜
４ｎを順次充電するから、低電圧の充電器６を使用して
各コンデンサ４ａ〜４ｎを充電することができ、コスト
ダウンを図るとともに、加熱装置１を小型化することが
できる。As shown in FIG. 7, the auxiliary power supply 4
Is preferably composed of a plurality of capacitors 4a to 4n connected in series. By configuring the auxiliary power supply 4 with the plurality of capacitors 4a to 4n in this way, for example, when the auxiliary power supply 4 of 60V in total is manufactured, it can be realized by connecting five 12V capacitors in series. The capacitors 4a to 4n connected in series with the auxiliary power supply 4
Switches 15a, 15b for turning on and off the connection of
And the charging changeover switches 16 and 17 for switching the connection between the capacitors 4a to 4n and the charger 6, the respective capacitors 4a to 4n can be charged separately. That is, each of the capacitors 4 a to 4
When charging 4n, the charger 6 switches the switching device 7 to turn off the changeover switches 15a and 15b, and connects the charging changeover switches 16 and 17 to the capacitor 4a to charge the capacitor 4a. Capacitor 4a
Is completely charged, the charging switches 16 and 17 are connected to the capacitor 4b for charging. As described above, the charge changeover switches 16 and 17 are sequentially switched to sequentially charge the capacitors 4n, and when all the capacitors 4a to 4n are completely charged, the changeover switches 15a and 15b are turned on to connect the capacitors 4a to 4n in series. . And heating device
When the heating unit 2 is heated by 1, the switching device 7 is switched to the auxiliary heating element 2 b side, and the switching switch 16 is switched to the capacitor 4.
a to supply power to the auxiliary heating element 2b from the capacitors 4a to 4n of the auxiliary power supply device 4. By supplying power to the auxiliary heating element 2b from the plurality of capacitors 4a to 4n connected in series in this manner, the auxiliary heating element 2b can be used as a high-voltage auxiliary power supply. In addition, each capacitor 4a ~
Since the capacitors 4a to 4n are sequentially charged, the capacitors 4a to 4n can be charged by using the low-voltage charger 6, so that the cost can be reduced and the size of the heating device 1 can be reduced.
【００３４】上記実施例はコンデンサ４ａ〜４ｎを直列
に接続し、各コンデンサ４ａ〜４ｎを個々に充電した場
合について説明したが、例えば図９の（ｂ）に示すよう
に、補助発熱体２ｂに電力を供給するときは、直列に接
続した複数のコンデンサ４ａ〜４ｄから補助発熱体２ｂ
に電力を供給し、各コンデンサ４ａ〜４ｄを充電すると
き、（ａ）に示すように、直列に接続した複数のコンデ
ンサ４ａ，４ｂと直列に接続した複数のコンデンサ４
ｃ，４ｄを並列に接続して充電器６で充電するようにし
ても良い。このように複数のコンデンサを同時に充電す
ることにより、各コンデンサ４ａ〜４ｄの充電量のばら
っきを低減することができる。また、各コンデンサ４ａ
〜４ｄが完全に充電される前に補助発熱体２ｂに電力を
供給する必要が生じたときに、各コンデンサ４ａ〜４ｄ
の充電量のバランスを取ることができ、補助発熱体２ｂ
に安定して電力を供給することができる。In the above embodiment, the case where the capacitors 4a to 4n are connected in series and the capacitors 4a to 4n are individually charged has been described. For example, as shown in FIG. When power is supplied, the auxiliary heating element 2b is connected to a plurality of capacitors 4a to 4d connected in series.
When power is supplied to the capacitors 4a to 4d to charge the capacitors 4a to 4d, a plurality of capacitors 4a and 4b connected in series and a plurality of capacitors 4
c and 4d may be connected in parallel and charged by the charger 6. By charging a plurality of capacitors at the same time as described above, it is possible to reduce variations in the charge amounts of the capacitors 4a to 4d. Also, each capacitor 4a
When it becomes necessary to supply power to the auxiliary heating element 2b before the capacitors 4a to 4d are fully charged, the capacitors 4a to 4d
And the auxiliary heating element 2b
Power can be supplied stably.
【００３５】また、図９に示すように、直列に接続した
複数のコンデンサ４ａ，４ｂと直列に接続した複数のコ
ンデンサ４ｃ，４ｄを並列に接続し、（ｂ）に示すよう
に、並列に接続されたコンデンサ群から補助発熱体２ｂ
に電力を供給し、各コンデンサ４ａ〜４ｄを充電すると
き、（ａ）に示すように、直列に接続した複数のコンデ
ンサ４ａ，４ｂと直列に接続した複数のコンデンサ４
ｃ，４ｄを別個に充電するようにしても良い。このよう
にしても各コンデンサ４ａ〜４ｄを充電する充電器６を
低電圧化することができる。Further, as shown in FIG. 9, a plurality of capacitors 4a, 4b connected in series and a plurality of capacitors 4c, 4d connected in series are connected in parallel, and as shown in FIG. Auxiliary heating element 2b
When power is supplied to the capacitors 4a to 4d to charge the capacitors 4a to 4d, a plurality of capacitors 4a and 4b connected in series and a plurality of capacitors 4
c and 4d may be charged separately. Also in this case, the voltage of the charger 6 for charging the capacitors 4a to 4d can be reduced.
【００３６】次ぎにこの加熱装置１を例えば電子写真方
式の複写機やプリンタ装置等の画像形成装置で記録媒体
に転写されたトナー像を加熱，加圧して記録媒体に固着
させる定着装置に適用した実施例について説明する。Next, the heating device 1 is applied to a fixing device that heats and presses a toner image transferred onto a recording medium by an image forming apparatus such as an electrophotographic copying machine or a printer to fix the toner image on the recording medium. An example will be described.
【００３７】電子写真方式の画像形成装置２０は、図７
の構成図に示すように、感光体２１と、感光体２１に沿
って設けられた帯電装置２２と、感光体２１の回転方向
の帯電装置２２より下流側に設けられ、書込装置の一部
を構成してレーザ光２３を感光体２１の表面に入射する
ミラー２４と、レーザ光２３の入射する書込部の下流側
に設けられ、現像ローラ２５ａを有する現像装置２５
と、現像装置２５の下流側に設けられた転写装置２６
と、転写装置２６の下流側に設けられ、クリーニングブ
レード２７ａを有するクリーニング装置２７と、給紙装
置２８及び定着装置２９を有する。給紙装置２８は給紙
トレイ３０と給紙コロ３１と記録紙搬送路３２及びレジ
ストローラ対３３を有し、給紙トレイ３０に収納された
記録紙を転写装置２６に搬送する。The image forming apparatus 20 of the electrophotographic system has the configuration shown in FIG.
And a charging device 22 provided along the photoconductor 21 and a portion of the writing device provided downstream of the charging device 22 in the rotation direction of the photoconductor 21 as shown in FIG. And a developing device 25 having a developing roller 25a provided downstream of a writing section where the laser beam 23 is incident, and a mirror 24 for projecting the laser beam 23 onto the surface of the photoconductor 21.
And a transfer device 26 provided downstream of the developing device 25.
And a cleaning device 27 provided downstream of the transfer device 26 and having a cleaning blade 27 a, and a sheet feeding device 28 and a fixing device 29. The paper feeding device 28 has a paper feeding tray 30, a paper feeding roller 31, a recording paper conveying path 32, and a pair of registration rollers 33, and conveys the recording paper stored in the paper feeding tray 30 to the transfer device 26.
【００３８】定着装置２９は、図８の断面図に示すよう
に、定着ローラ３４と加圧ローラ３５を有する。定着ロ
ーラ３４には例えばハロゲンヒータからなる主発熱体２
ａと補助発熱体２ｂからなる加熱部２を内蔵し、主電源
装置３と補助電源装置４から供給される電力により温度
が上昇し、補助電源装置４から供給される電力をオン／
オフ制御することにより一定温度に保たれている。The fixing device 29 has a fixing roller 34 and a pressure roller 35 as shown in the sectional view of FIG. The fixing roller 34 includes, for example, the main heating element 2 including a halogen heater.
a and a heating unit 2 comprising an auxiliary heating element 2b, the temperature of which rises due to the power supplied from the main power supply 3 and the auxiliary power supply 4, and the power supplied from the auxiliary power supply 4 is turned on / off.
It is kept at a constant temperature by turning it off.
【００３９】上記のように構成した画像形成装置２０に
おいて画像を形成するとき、回転している感光体２１の
表面を帯電装置２２により均一に帯電し、帯電した感光
体２１の表面に、書込装置から画像情報に応じて出射さ
れるレーザ光２３をミラー２４で反射して入射して形成
する画像に応じた静電潜像を形成する。この感光体２１
の表面に形成した静電潜像を現像装置２５で現像してト
ナー像を形成する。一方、給紙コロ３１により給紙トレ
イ３０から給紙された記録紙は記録紙搬送路３２を通り
レジストローラ３３の位置で一旦停止している。そして
感光体２１に形成されたトナー像が転写装置２６に達す
るのと同じタイミングでレジストローラ対３３から記録
紙を送りだして、感光体２１に形成されたトナー像を転
写装置２６で記録紙に転写する。転写装置２６でトナー
像が転写された記録紙は、図７に示すように定着装置２
９に送られる。また、記録紙に転写されずに感光体２１
に残留したトナーはクリーニング装置２７で除去され
る。When an image is formed in the image forming apparatus 20 configured as described above, the surface of the rotating photosensitive member 21 is uniformly charged by the charging device 22 and writing is performed on the charged surface of the photosensitive member 21. The laser beam 23 emitted from the apparatus in accordance with the image information is reflected by the mirror 24 and is incident thereon to form an electrostatic latent image corresponding to the image formed. This photoconductor 21
The electrostatic latent image formed on the surface is developed by the developing device 25 to form a toner image. On the other hand, the recording paper fed from the paper feed tray 30 by the paper feed roller 31 passes through the recording paper conveyance path 32 and temporarily stops at the position of the registration roller 33. Then, the recording paper is fed from the pair of registration rollers 33 at the same timing as the toner image formed on the photoconductor 21 reaches the transfer device 26, and the toner image formed on the photoconductor 21 is transferred onto the recording paper by the transfer device 26. I do. The recording paper onto which the toner image has been transferred by the transfer device 26 is fixed to the fixing device 2 as shown in FIG.
9 Also, the photoconductor 21 is not transferred to the recording paper.
Is removed by the cleaning device 27.
【００４０】定着装置２９に送られたトナー像３６が転
写された記録紙３７は定着ローラ３４と加圧ローラ３５
の間に搬送され、一定温度に加熱された定着ローラ３４
によりトナーを加熱溶融して記録紙３７にトナー像３６
を定着する。このトナー像３６を記録紙３７に定着する
定着ローラ３４の加熱部２は主発熱体２ａと補助発熱体
２ｂを有し、主電源装置３と補助電源装置４から供給さ
れる電力により温度が上昇し、補助電源装置４から供給
される電力をオン／オフ制御することにより、定着ロー
ラ３４の温度が高くなりすぎることを防止して一定温度
に保つことができ、トナーを安定して加熱溶融すること
ができ、良質なトナー像３６を記録紙３７に定着して形
成することができる。また、定着ローラ３４に内蔵した
加熱部２の主発熱体２ａと補助発熱体２ｂに主電源装置
３と補助電源装置４から電力を供給して定着ローラ３４
の温度を上昇させるから、定着ローラ３４の表面温度を
所定の定着温度に迅速に上昇させることができる。The recording paper 37 on which the toner image 36 sent to the fixing device 29 is transferred is fixed to a fixing roller 34 and a pressure roller 35.
The fixing roller 34 conveyed during the period and heated to a constant temperature
Heats and melts the toner to form a toner image 36 on the recording paper 37.
To establish. The heating section 2 of the fixing roller 34 for fixing the toner image 36 to the recording paper 37 has a main heating element 2a and an auxiliary heating element 2b, and the temperature is increased by electric power supplied from the main power supply 3 and the auxiliary power supply 4. By controlling on / off of the power supplied from the auxiliary power supply device 4, the temperature of the fixing roller 34 can be prevented from becoming too high, and can be maintained at a constant temperature, and the toner can be stably heated and melted. As a result, the high quality toner image 36 can be fixed on the recording paper 37 and formed. Further, power is supplied from the main power supply unit 3 and the auxiliary power supply unit 4 to the main heating element 2a and the auxiliary heating element 2b of the heating unit 2 incorporated in the fixing roller 34 so that the fixing roller 34
, The surface temperature of the fixing roller 34 can be quickly increased to a predetermined fixing temperature.
【００４１】[0041]
【発明の効果】この発明は以上説明したように、加熱部
に主発熱体と補助発熱体を設け、主発熱体には主電源装
置から電力を供給し、補助発熱体には補助電源装置から
電力を供給するから、加熱部の加熱を開始するときに、
主電源装置と補助電源装置の両方から大容量の電力を供
給して加熱部を短時間で所定の温度に立ち上げることが
でき、待機時に加熱部に電力を供給しないですむ。As described above, according to the present invention, the main heating element and the auxiliary heating element are provided in the heating section, power is supplied from the main power supply to the main heating element, and the auxiliary power supply is supplied to the auxiliary heating element. Because power is supplied, when starting heating of the heating unit,
By supplying a large amount of power from both the main power supply and the auxiliary power supply, the heating unit can be started up to a predetermined temperature in a short time, and there is no need to supply power to the heating unit during standby.
【００４２】また、補助電源装置から補助発熱体に供給
している電力量を調整しながら加熱部を加熱するから、
加熱部の温度を均一に保持することができる。Since the heating unit is heated while adjusting the amount of electric power supplied from the auxiliary power supply to the auxiliary heating element,
The temperature of the heating unit can be kept uniform.
【００４３】さらに、コンデンサを有する補助電源装置
から補助発熱体に電力の供給を開始した時からあらかじ
め定めた一定時間経過したときに補助電源装置から補助
発熱体に供給している電力を遮断することにより、補助
電源装置から補助発熱体に供給している電力がある程度
低減したときに補助電源装置から補助発熱体に供給して
いる電力を遮断することができ、大電力を供給している
状態で遮断するときに発生する周囲回路の各部品の劣化
や電磁ノイズを防止することができる。Further, the power supplied from the auxiliary power supply to the auxiliary heating element is cut off when a predetermined period of time has elapsed since the supply of power from the auxiliary power supply having the capacitor to the auxiliary heating element is started. By this, when the power supplied from the auxiliary power supply to the auxiliary heating element is reduced to some extent, the power supplied from the auxiliary power supply to the auxiliary heating element can be cut off, and in a state where large power is supplied. It is possible to prevent deterioration of each component of the peripheral circuit and electromagnetic noise generated when the circuit is cut off.
【００４４】また、補助電源装置から補助発熱体に供給
している電力を遮断しているときに補助電源装置を充電
器に接続して充電することにより、補助電源装置から補
助発熱体に供給する電力を確実に保持することができ
る。Also, when the power supplied from the auxiliary power supply to the auxiliary heating element is cut off, the auxiliary power supply is connected to the charger and charged, so that the auxiliary power supply supplies the auxiliary heating element. Power can be reliably held.
【００４５】また、補助電源装置の保有電力量に応じて
補助電源装置から補助発熱体に供給する電力量を調整す
ることにより、補助電源装置から補助発熱体に必要とす
る電力を確実に供給することができる。Further, by adjusting the amount of power supplied from the auxiliary power supply to the auxiliary heating element in accordance with the amount of power held by the auxiliary power supply, the required power is reliably supplied from the auxiliary power supply to the auxiliary heating element. be able to.
【００４６】さらに、補助電源装置の保有電力量があら
かじめ定めた一定値に低下したときに、補助電源装置か
ら補助発熱体に供給している電力を遮断することによ
り、大電力を供給している状態で遮断するときに発生す
る周囲回路の各部品の劣化や電磁ノイズをより確実に防
止することができる。Further, when the amount of power held by the auxiliary power supply drops to a predetermined constant value, the power supplied from the auxiliary power supply to the auxiliary heating element is cut off to supply large power. It is possible to more reliably prevent the deterioration of each component of the peripheral circuit and the electromagnetic noise that occur when the circuit is cut off in the state.
【００４７】また、加熱部の温度を検出し、検出した温
度が一定になるように補助電源装置から補助発熱体に供
給する電力量を調整することにより、加熱部の温度が高
くなりすぎることを防いで、加熱部を一定の温度に保つ
ことができる。Further, by detecting the temperature of the heating section and adjusting the amount of power supplied from the auxiliary power supply to the auxiliary heating element so that the detected temperature becomes constant, it is possible to prevent the temperature of the heating section from becoming too high. In this way, the heating unit can be kept at a constant temperature.
【００４８】また、加熱部の温度変化により補助電源装
置から補助発熱体に供給する電力量を調整することによ
り、加熱部を一定の安定した温度に保つことができる。Further, by adjusting the amount of electric power supplied from the auxiliary power supply to the auxiliary heating element by changing the temperature of the heating section, the heating section can be maintained at a constant and stable temperature.
【００４９】さらに、補助電源装置は複数のセルで構成
し、使用時に接続切替装置で複数のセルを直列に接続す
ることにより、高電圧で大電力を供給することができ
る。Further, the auxiliary power supply device is composed of a plurality of cells, and by using the connection switching device to connect the plurality of cells in series during use, it is possible to supply a large amount of power at a high voltage.
【００５０】また、補助電源装置の複数のセルを充填す
るときに、各セルを順次充電することにより、低電圧の
充電器を使用して充電することができ、充電器を小型化
してコストダウンを図ることができる。When a plurality of cells of the auxiliary power supply device are charged, each cell is charged sequentially, so that the battery can be charged using a low-voltage charger. Can be achieved.
【００５１】また、補助電源装置の複数のセルを充填す
るときに、接続切替装置で各セルを並列に接続して同時
に充電することにより、各セルの充電量のばらっきを低
減することができる。また、各セルが完全に充電される
前に補助発熱体に電力を供給する必要が生じたときに、
各セルの充電量のバランスを取ることができ、補助発熱
体に安定して電力を供給することができる。Further, when a plurality of cells of the auxiliary power supply device are filled, by connecting the cells in parallel by the connection switching device and charging them at the same time, it is possible to reduce the variation in the charge amount of each cell. it can. Also, when it becomes necessary to supply power to the auxiliary heating element before each cell is fully charged,
The charge amount of each cell can be balanced, and power can be stably supplied to the auxiliary heating element.
【００５２】この加熱装置を定着装置に設け、定着ロー
ラに加熱部を内蔵することにより、定着ローラの温度を
所定の温度に迅速に立ち上げて所定温度に保つことがで
きるから、待機時に定着ローラに電力を供給しなくても
良く、省エネルギを図ることができる。By providing this heating device in the fixing device and incorporating a heating section in the fixing roller, the temperature of the fixing roller can be quickly raised to a predetermined temperature and maintained at the predetermined temperature. It is not necessary to supply power to the power supply, and energy can be saved.
【００５３】また、画像形成装置に上記定着装置を設
け、電子写真方式で形成したトナー像を記録部材に加熱
溶着させることにより、トナーを安定して加熱溶融する
ことができ、良質なトナー像を記録紙に定着して形成す
ることができる。Further, by providing the fixing device in the image forming apparatus and heating and fusing the toner image formed by the electrophotographic method to the recording member, the toner can be stably heated and melted, and a high quality toner image can be formed. It can be formed by fixing to recording paper.
【図１】この発明の実施例の加熱装置の構成を示す回路
図である。FIG. 1 is a circuit diagram showing a configuration of a heating device according to an embodiment of the present invention.
【図２】この発明の第２の実施例の加熱装置の構成を示
す回路図である。FIG. 2 is a circuit diagram showing a configuration of a heating device according to a second embodiment of the present invention.
【図３】この発明の第３の実施例の加熱装置の構成を示
す回路図である。FIG. 3 is a circuit diagram showing a configuration of a heating device according to a third embodiment of the present invention.
【図４】この発明の第４の実施例の加熱装置の構成を示
す回路図である。FIG. 4 is a circuit diagram showing a configuration of a heating device according to a fourth embodiment of the present invention.
【図５】この発明の第５の実施例の加熱装置の構成を示
す回路図である。FIG. 5 is a circuit diagram showing a configuration of a heating device according to a fifth embodiment of the present invention.
【図６】この発明の第６の実施例の加熱装置の構成を示
す回路図である。FIG. 6 is a circuit diagram showing a configuration of a heating device according to a sixth embodiment of the present invention.
【図７】この発明の第７の実施例の加熱装置の構成を示
す回路図である。FIG. 7 is a circuit diagram showing a configuration of a heating device according to a seventh embodiment of the present invention.
【図８】この発明の第８の実施例の補助電源装置の構成
を示す回路図であるFIG. 8 is a circuit diagram showing a configuration of an auxiliary power supply device according to an eighth embodiment of the present invention.
【図９】この発明の第９の実施例の補助電源装置の構成
を示す回路図であるFIG. 9 is a circuit diagram showing a configuration of an auxiliary power supply according to a ninth embodiment of the present invention.
【図１０】この発明の実施例の画像形成装置の構成図で
ある。FIG. 10 is a configuration diagram of an image forming apparatus according to an embodiment of the present invention.
【図１１】上記画像形成装置の定着装置の構成を示す断
面図である。FIG. 11 is a cross-sectional view illustrating a configuration of a fixing device of the image forming apparatus.
１；加熱装置、２；加熱部、２ａ；主発熱体、２ｂ；補
助発熱体、３；主電源装置、４；補助電源装置、５；メ
インスイッチ、６；充電器、７；切替装置、８；制御
部、１２；残電力検知部、１３；温度検知部、１４；温
度調整部、２０；画像形成装置、２９；定着装置、３
４；定着ローラ、３５；加圧ローラ。DESCRIPTION OF SYMBOLS 1; Heating apparatus, 2; Heating part, 2a; Main heating element, 2b; Auxiliary heating element, 3; Main power supply, 4; Auxiliary power supply, 5; Main switch, 6; Control unit 12, remaining power detection unit 13, temperature detection unit 14, temperature adjustment unit 20, image forming apparatus 29, fixing device 3,
4: fixing roller, 35: pressure roller.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H027 DA03 DA38 EA15 EC20 ED25 EE02 EE07 EF09 ZA01 2H033 AA32 AA41 BA25 BB18 BB21 CA01 CA23 CA48 3K058 AA02 AA73 AA81 BA18 CA12 CA23 CA61 CA69 CB02 DA02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H027 DA03 DA38 EA15 EC20 ED25 EE02 EE07 EF09 ZA01 2H033 AA32 AA41 BA25 BB18 BB21 CA01 CA23 CA48 3K058 AA02 AA73 AA81 BA18 CA12 CA23 CA61 CA69 CB02 DA02
Claims (13)
電器と切替装置及び制御部を有し、 加熱部は主電源装置から供給される電力により発熱する
主発熱体と、補助電源装置から供給される電力により発
熱する補助発熱体を有し、 補助電源装置は充放電可能なコンデンサを有し、充電器
は主電源装置から供給される電力で補助電源装置のコン
デンサを充電し、 切替装置は補助電源装置の充電と補助電源装置からの補
助発熱体に対する電力供給を切え替え、 制御部は補助電源装置から補助発熱体に供給する電力量
を調整することを特徴とする加熱装置。A heating unit, a main power supply, an auxiliary power supply, a charger, a switching device, and a control unit, wherein the heating unit generates heat by electric power supplied from the main power supply; The auxiliary power supply has a chargeable / dischargeable capacitor, the charger charges the capacitor of the auxiliary power supply with the power supplied from the main power supply, and switches. A heating device characterized in that the device switches between charging of the auxiliary power supply and power supply from the auxiliary power supply to the auxiliary heating element, and the control unit adjusts the amount of power supplied from the auxiliary power supply to the auxiliary heating element.
体に電力の供給を開始した時からあらかじめ定めた一定
時間経過したときに補助電源装置から補助発熱体に供給
している電力を遮断する請求項１記載の加熱装置。2. The control unit according to claim 1, wherein the control unit cuts off the power supplied from the auxiliary power supply to the auxiliary heating element when a predetermined period of time elapses after the power supply from the auxiliary power supply to the auxiliary heating element is started. The heating device according to claim 1.
熱体に供給している電力を遮断しているときに補助電源
装置を充電器に接続する請求項２記載の加熱装置。3. The heating device according to claim 2, wherein the switching device connects the auxiliary power supply to the charger when the power supplied from the auxiliary power supply to the auxiliary heating element is cut off.
電器と切替装置と残電力検知装置及び制御部を有し、 加熱部は主電源装置から供給される電力により発熱する
主発熱体と、補助電源装置から供給される電力により発
熱する補助発熱体を有し、 補助電源装置は充放電可能なコンデンサを有し、充電器
は主電源装置から供給される電力で補助電源装置のコン
デンサを充電し、 切替装置は補助電源装置の充電と補助電源装置からの補
助発熱体に対する電力供給を切え替え、 残電力検知装置は補助電源装置は保有する電力量を検出
し、 制御部は残電力検知装置で検出している補助電源装置の
保有電力量に応じて補助電源装置から補助発熱体に供給
する電力量を調整することを特徴とする加熱装置。4. A main heating element having a heating unit, a main power supply, an auxiliary power supply, a charger, a switching device, a remaining power detection device, and a control unit, wherein the heating unit generates heat by electric power supplied from the main power supply. And an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply, the auxiliary power supply has a chargeable / dischargeable capacitor, and the charger uses the electric power supplied from the main power supply as a capacitor of the auxiliary power supply. The switching device switches the charging of the auxiliary power supply and the power supply from the auxiliary power supply to the auxiliary heating element, the remaining power detection device detects the amount of power held by the auxiliary power supply, and the control unit controls the remaining power. A heating device, wherein the amount of power supplied from the auxiliary power supply to the auxiliary heating element is adjusted according to the amount of power held by the auxiliary power supply detected by the power detection device.
いる補助電源装置の保有電力量があらかじめ定めた一定
値に低下したときに、補助電源装置から補助発熱体に供
給している電力を遮断する請求項４記載の加熱装置。5. The power supply from the auxiliary power supply to the auxiliary heating element when the amount of power of the auxiliary power supply detected by the remaining power detection device decreases to a predetermined constant value. The heating device according to claim 4, wherein the heating device is shut off.
電器と切替装置と温度検知装置及び制御部を有し、 加熱部は主電源装置から供給される電力により発熱する
主発熱体と、補助電源装置から供給される電力により発
熱する補助発熱体を有し、 補助電源装置は充放電可能なコンデンサを有し、充電器
は主電源装置から供給される電力で補助電源装置のコン
デンサを充電し、 切替装置は補助電源装置の充電と補助電源装置からの補
助発熱体に対する電力供給を切え替え、 温度検知装置は加熱部の温度を検出し、 制御部は温度検知装置で検出している加熱部の温度に応
じて補助電源装置から補助発熱体に供給する電力量を調
整することを特徴とする加熱装置。6. A heating unit having a heating unit, a main power supply, an auxiliary power supply, a charger, a switching device, a temperature detection device, and a control unit, wherein the heating unit is configured to generate a main heat generated by electric power supplied from the main power supply. The auxiliary power supply has an auxiliary heating element that generates heat by electric power supplied from the auxiliary power supply, the auxiliary power supply has a chargeable / dischargeable capacitor, and the charger uses the electric power supplied from the main power supply to power the capacitor of the auxiliary power supply. The switching device switches between charging the auxiliary power supply and supplying power to the auxiliary heating element from the auxiliary power supply, the temperature detection device detects the temperature of the heating section, and the control section detects the temperature using the temperature detection device. A heating device that adjusts the amount of power supplied from an auxiliary power supply device to an auxiliary heating element according to a temperature of a heating unit.
電器と切替装置及び温度制御装置を有し、 加熱部は主電源装置から供給される電力により発熱する
主発熱体と、補助電源装置から供給される電力により発
熱する補助発熱体を有し、 補助電源装置は充放電可能なコンデンサを有し、充電器
は主電源装置から供給される電力で補助電源装置のコン
デンサを充電し、 切替装置は補助電源装置の充電と補助電源装置からの補
助発熱体に対する電力供給を切え替え、 温度制御装置は加熱部の温度変化により補助電源装置か
ら補助発熱体に供給する電力量を調整することを特徴と
する加熱装置。7. A heating section, a main power supply, an auxiliary power supply, a charger, a switching device, and a temperature control device, wherein the heating section generates a main heating element by the electric power supplied from the main power supply, and an auxiliary power supply. An auxiliary heating element that generates heat by electric power supplied from the device, the auxiliary power supply device has a chargeable / dischargeable capacitor, a charger charges the capacitor of the auxiliary power supply device with electric power supplied from the main power supply device, The switching device switches between charging the auxiliary power supply and supplying power to the auxiliary heating element from the auxiliary power supply, and the temperature control device adjusts the amount of power supplied from the auxiliary power supply to the auxiliary heating element by a change in the temperature of the heating section. A heating device, characterized in that:
請求項１乃至７のいずれかに記載の加熱装置。8. The heating device according to claim 1, wherein the auxiliary power supply device includes a plurality of cells.
に直列に接続する接続切替装置を有する請求項８記載の
加熱装置。9. The heating device according to claim 8, further comprising a connection switching device for connecting a plurality of cells of the auxiliary power supply device in series when used.
するときに各セルを順次充電する請求項９記載の加熱装
置。10. The heating device according to claim 9, wherein each of the plurality of cells of the auxiliary power supply device is sequentially charged when the plurality of cells are filled.
するときに、接続切替装置で各セルを並列に接続して同
時に充電する請求項９記載の加熱装置。11. The heating device according to claim 9, wherein when charging a plurality of cells of the auxiliary power supply device, the connection switching device connects the cells in parallel and charges the cells simultaneously.
加熱装置を有し、定着ローラに加熱部を内蔵したことを
特徴とする定着装置。12. A fixing device comprising the heating device according to claim 1, wherein the fixing roller has a built-in heating unit.
電子写真方式で形成したトナー像を記録部材に加熱溶着
させることを特徴とする画像形成装置。13. A fixing device according to claim 12, comprising:
An image forming apparatus wherein a toner image formed by an electrophotographic method is heated and fused to a recording member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001091553A JP2002184554A (en) | 2000-10-04 | 2001-03-28 | Heating device and fixing device as well as image forming device using it |
| US09/966,075 US6542705B2 (en) | 2000-09-29 | 2001-10-01 | Electrophotographic heating apparatus, system, and method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-304718 | 2000-10-04 | ||
| JP2000304718 | 2000-10-04 | ||
| JP2001091553A JP2002184554A (en) | 2000-10-04 | 2001-03-28 | Heating device and fixing device as well as image forming device using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002184554A true JP2002184554A (en) | 2002-06-28 |
Family
ID=26601514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001091553A Pending JP2002184554A (en) | 2000-09-29 | 2001-03-28 | Heating device and fixing device as well as image forming device using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002184554A (en) |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003067930A1 (en) | 2002-02-04 | 2003-08-14 | Ricoh Company, Ltd. | Heating apparatus, fixing apparatus, and image forming apparatus |
| WO2004008808A1 (en) * | 2002-07-12 | 2004-01-22 | Ricoh Company, Ltd. | Heating apparatus, auxiliary power supply apparatus, auxiliary power supply system, fixation apparatus, and moving picture formation apparatus |
| EP1542085A1 (en) | 2003-12-08 | 2005-06-15 | Ricoh Company, Ltd. | Heating device with power supplies, fixing device using the heating device and image forming apparatus using the fixing device |
| EP1542092A2 (en) | 2003-12-08 | 2005-06-15 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| JP2005221685A (en) * | 2004-02-05 | 2005-08-18 | Ricoh Co Ltd | Capacitor, fixing device and image forming apparatus |
| EP1562085A3 (en) * | 2004-02-05 | 2005-10-05 | Ricoh Company, Ltd. | Image forming apparatus |
| US6987936B2 (en) | 2003-06-05 | 2006-01-17 | Ricoh Company, Ltd. | Image forming apparatus, image forming method, and fixing unit |
| JP2006058520A (en) * | 2004-08-19 | 2006-03-02 | Ricoh Co Ltd | Power supply circuit, power supply device and image forming apparatus |
| JP2006078771A (en) * | 2004-09-09 | 2006-03-23 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| US7024128B2 (en) | 2002-09-24 | 2006-04-04 | Ricoh Co., Ltd. | Image forming apparatus and method |
| JP2006106717A (en) * | 2004-09-08 | 2006-04-20 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| US7054570B2 (en) | 2003-03-27 | 2006-05-30 | Ricoh Company, Ltd. | Image-forming apparatus |
| US7122767B2 (en) | 2004-02-03 | 2006-10-17 | Ricoh Company, Limited | Method for controlling power supply to fixing roller in image forming apparatus |
| JP2007010910A (en) * | 2005-06-29 | 2007-01-18 | Kyocera Mita Corp | Image forming apparatus |
| EP1760543A2 (en) * | 2005-08-30 | 2007-03-07 | Ricoh Company, Ltd. | Image forming apparatus, method for controlling image forming apparatus, fixing apparatus |
| JP2007072008A (en) * | 2005-09-05 | 2007-03-22 | Ricoh Co Ltd | Image forming apparatus |
| US7212759B2 (en) | 2003-03-27 | 2007-05-01 | Ricoh Company, Ltd. | Heating device, fixing device and image forming apparatus |
| JP2007121936A (en) * | 2005-10-31 | 2007-05-17 | Kyocera Mita Corp | Fixing apparatus and image forming apparatus |
| JP2007209149A (en) * | 2006-02-03 | 2007-08-16 | Ricoh Co Ltd | Power supply device and image forming apparatus |
| US7308216B2 (en) | 2004-08-23 | 2007-12-11 | Ricoh Company, Ltd. | Image forming apparatus and method to supply power to a fixing device |
| JP2008003147A (en) * | 2006-06-20 | 2008-01-10 | Ricoh Co Ltd | Image forming apparatus, power source supply control method and program |
| JP2008011700A (en) * | 2002-12-05 | 2008-01-17 | Ricoh Co Ltd | Image forming apparatus and inter image forming apparatus power-cooperative system |
| US7333743B2 (en) | 2004-09-09 | 2008-02-19 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7343113B2 (en) * | 2004-09-08 | 2008-03-11 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7356270B2 (en) | 2004-09-08 | 2008-04-08 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7366432B2 (en) | 2004-09-08 | 2008-04-29 | Ricoh Company, Ltd. | Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method |
| JP2008102532A (en) * | 2007-11-05 | 2008-05-01 | Ricoh Co Ltd | Image forming apparatus |
| US7463841B2 (en) | 2004-11-26 | 2008-12-09 | Ricoh Company, Ltd. | Heating device, fuser device, and image forming apparatus including power supply devices for supplying power to a heating unit |
| US7546057B2 (en) | 2005-05-27 | 2009-06-09 | Ricoh Company, Limited | Capacitor power supply unit, heating device, image forming apparatus, and copying device |
| US7551869B2 (en) | 2004-08-23 | 2009-06-23 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| JP2009186511A (en) * | 2008-02-01 | 2009-08-20 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| JP2010217662A (en) * | 2009-03-18 | 2010-09-30 | Fuji Xerox Co Ltd | Fixing device, image forming apparatus and program |
| US7881632B2 (en) | 2006-11-09 | 2011-02-01 | Kabushiki Kaisha Toshiba | Image forming apparatus for controlling fixing operation with auxiliary power source |
| US7894736B2 (en) | 2006-11-07 | 2011-02-22 | Ricoh Company, Ltd. | Image forming apparatus including control for main and auxiliary heating members |
| US8010010B2 (en) * | 2007-06-11 | 2011-08-30 | Ricoh Company, Ltd. | Energy storage device, image forming apparatus including energy storage device, and discharge control method |
| US8155541B2 (en) | 2009-04-08 | 2012-04-10 | Kabushiki Kaisha Toshiba | Fixing device which detects anomaly of heater |
| JP2012095481A (en) * | 2010-10-28 | 2012-05-17 | Kyocera Mita Corp | Charging control device and image forming apparatus |
| US8447200B2 (en) | 2009-12-24 | 2013-05-21 | Samsung Electronics Co., Ltd. | Fusing device, image forming apparatus having the same, and control method thereof |
| US8736861B2 (en) | 2005-09-12 | 2014-05-27 | Ricoh Company, Ltd. | Image forming apparatus |
-
2001
- 2001-03-28 JP JP2001091553A patent/JP2002184554A/en active Pending
Cited By (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473972A1 (en) * | 2002-02-04 | 2004-11-03 | Ricoh Company, Ltd. | Heating apparatus, fixing apparatus, and image forming apparatus |
| US7546050B2 (en) | 2002-02-04 | 2009-06-09 | Ricoh Company, Ltd. | Fixing apparatus including a fixing roller and a pressurization roller |
| US7247816B2 (en) | 2002-02-04 | 2007-07-24 | Ricoh Company, Ltd. | Heating apparatus, fixing apparatus, and image forming apparatus |
| EP1473972A4 (en) * | 2002-02-04 | 2007-05-23 | Ricoh Kk | Heating apparatus, fixing apparatus, and image forming apparatus |
| WO2003067930A1 (en) | 2002-02-04 | 2003-08-14 | Ricoh Company, Ltd. | Heating apparatus, fixing apparatus, and image forming apparatus |
| US7002112B2 (en) | 2002-02-04 | 2006-02-21 | Ricoh Company, Ltd. | Heating apparatus for increasing temperature in short period of time with minimum overshoot |
| WO2004008808A1 (en) * | 2002-07-12 | 2004-01-22 | Ricoh Company, Ltd. | Heating apparatus, auxiliary power supply apparatus, auxiliary power supply system, fixation apparatus, and moving picture formation apparatus |
| US7421224B2 (en) | 2002-07-12 | 2008-09-02 | Ricoh Company, Ltd. | Heating device, auxiliary power supplying device, auxiliary power supplying system, fixing device, and image forming apparatus |
| KR100672799B1 (en) * | 2002-07-12 | 2007-01-24 | 가부시키가이샤 리코 | Heating apparatus, auxiliary power supply apparatus, auxiliary power supply system, fixation apparatus, and moving picture formation apparatus |
| US7196286B2 (en) | 2002-07-12 | 2007-03-27 | Ricoh Company, Ltd. | Heating apparatus, auxiliary power supply apparatus, auxiliary power supply system, fixation apparatus, and moving picture formation apparatus |
| US7024128B2 (en) | 2002-09-24 | 2006-04-04 | Ricoh Co., Ltd. | Image forming apparatus and method |
| JP2008011700A (en) * | 2002-12-05 | 2008-01-17 | Ricoh Co Ltd | Image forming apparatus and inter image forming apparatus power-cooperative system |
| JP4653792B2 (en) * | 2002-12-05 | 2011-03-16 | 株式会社リコー | Image forming apparatus and power coordination system between image forming apparatuses |
| US7212758B2 (en) | 2003-03-27 | 2007-05-01 | Ricoh Company, Ltd. | Image-forming apparatus |
| US7054570B2 (en) | 2003-03-27 | 2006-05-30 | Ricoh Company, Ltd. | Image-forming apparatus |
| US7212759B2 (en) | 2003-03-27 | 2007-05-01 | Ricoh Company, Ltd. | Heating device, fixing device and image forming apparatus |
| US6987936B2 (en) | 2003-06-05 | 2006-01-17 | Ricoh Company, Ltd. | Image forming apparatus, image forming method, and fixing unit |
| US7885569B2 (en) | 2003-12-08 | 2011-02-08 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit |
| EP1542092A3 (en) * | 2003-12-08 | 2005-10-12 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| US7664410B2 (en) | 2003-12-08 | 2010-02-16 | Ricoh Company, Ltd. | Image forming apparatus with control of power to a fixing unit |
| US7609988B2 (en) | 2003-12-08 | 2009-10-27 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit time |
| US7957663B2 (en) | 2003-12-08 | 2011-06-07 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| EP1542085A1 (en) | 2003-12-08 | 2005-06-15 | Ricoh Company, Ltd. | Heating device with power supplies, fixing device using the heating device and image forming apparatus using the fixing device |
| EP1542092A2 (en) | 2003-12-08 | 2005-06-15 | Ricoh Company, Ltd. | Heater, fixing unit and image forming apparatus |
| US7122767B2 (en) | 2004-02-03 | 2006-10-17 | Ricoh Company, Limited | Method for controlling power supply to fixing roller in image forming apparatus |
| EP1562085A3 (en) * | 2004-02-05 | 2005-10-05 | Ricoh Company, Ltd. | Image forming apparatus |
| US7239821B2 (en) | 2004-02-05 | 2007-07-03 | Ricoh Company, Ltd. | Image forming apparatus including a heating unit |
| JP4532921B2 (en) * | 2004-02-05 | 2010-08-25 | 株式会社リコー | Image forming apparatus |
| JP2005221685A (en) * | 2004-02-05 | 2005-08-18 | Ricoh Co Ltd | Capacitor, fixing device and image forming apparatus |
| US7496309B2 (en) | 2004-02-05 | 2009-02-24 | Ricoh Company, Ltd. | Image forming apparatus with auxiliary power source |
| JP2006058520A (en) * | 2004-08-19 | 2006-03-02 | Ricoh Co Ltd | Power supply circuit, power supply device and image forming apparatus |
| US7308216B2 (en) | 2004-08-23 | 2007-12-11 | Ricoh Company, Ltd. | Image forming apparatus and method to supply power to a fixing device |
| US7551869B2 (en) | 2004-08-23 | 2009-06-23 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7343113B2 (en) * | 2004-09-08 | 2008-03-11 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7565087B2 (en) | 2004-09-08 | 2009-07-21 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| US7366432B2 (en) | 2004-09-08 | 2008-04-29 | Ricoh Company, Ltd. | Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method |
| US7356270B2 (en) | 2004-09-08 | 2008-04-08 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| JP2006106717A (en) * | 2004-09-08 | 2006-04-20 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| JP2006078771A (en) * | 2004-09-09 | 2006-03-23 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| US7333743B2 (en) | 2004-09-09 | 2008-02-19 | Ricoh Company, Ltd. | Fixing device, image forming apparatus including the fixing device, and fixing method |
| JP4679857B2 (en) * | 2004-09-09 | 2011-05-11 | 株式会社リコー | Fixing apparatus and image forming apparatus |
| US7463841B2 (en) | 2004-11-26 | 2008-12-09 | Ricoh Company, Ltd. | Heating device, fuser device, and image forming apparatus including power supply devices for supplying power to a heating unit |
| US7546057B2 (en) | 2005-05-27 | 2009-06-09 | Ricoh Company, Limited | Capacitor power supply unit, heating device, image forming apparatus, and copying device |
| JP4685524B2 (en) * | 2005-06-29 | 2011-05-18 | 京セラミタ株式会社 | Image forming apparatus |
| JP2007010910A (en) * | 2005-06-29 | 2007-01-18 | Kyocera Mita Corp | Image forming apparatus |
| EP1760543A3 (en) * | 2005-08-30 | 2007-04-25 | Ricoh Company, Ltd. | Image forming apparatus, method for controlling image forming apparatus, fixing apparatus |
| EP1760543A2 (en) * | 2005-08-30 | 2007-03-07 | Ricoh Company, Ltd. | Image forming apparatus, method for controlling image forming apparatus, fixing apparatus |
| US7933529B2 (en) | 2005-08-30 | 2011-04-26 | Ricoh Company, Ltd. | Image forming apparatus, method for controlling image forming apparatus, fixing apparatus |
| JP2007072008A (en) * | 2005-09-05 | 2007-03-22 | Ricoh Co Ltd | Image forming apparatus |
| US9213297B2 (en) | 2005-09-12 | 2015-12-15 | Ricoh Company, Ltd. | Image forming apparatus |
| US8736861B2 (en) | 2005-09-12 | 2014-05-27 | Ricoh Company, Ltd. | Image forming apparatus |
| JP2007121936A (en) * | 2005-10-31 | 2007-05-17 | Kyocera Mita Corp | Fixing apparatus and image forming apparatus |
| JP2007209149A (en) * | 2006-02-03 | 2007-08-16 | Ricoh Co Ltd | Power supply device and image forming apparatus |
| JP2008003147A (en) * | 2006-06-20 | 2008-01-10 | Ricoh Co Ltd | Image forming apparatus, power source supply control method and program |
| US7894736B2 (en) | 2006-11-07 | 2011-02-22 | Ricoh Company, Ltd. | Image forming apparatus including control for main and auxiliary heating members |
| US7881632B2 (en) | 2006-11-09 | 2011-02-01 | Kabushiki Kaisha Toshiba | Image forming apparatus for controlling fixing operation with auxiliary power source |
| US8010010B2 (en) * | 2007-06-11 | 2011-08-30 | Ricoh Company, Ltd. | Energy storage device, image forming apparatus including energy storage device, and discharge control method |
| JP2008102532A (en) * | 2007-11-05 | 2008-05-01 | Ricoh Co Ltd | Image forming apparatus |
| JP4695127B2 (en) * | 2007-11-05 | 2011-06-08 | 株式会社リコー | Image forming apparatus |
| JP2009186511A (en) * | 2008-02-01 | 2009-08-20 | Ricoh Co Ltd | Fixing device and image forming apparatus |
| JP2010217662A (en) * | 2009-03-18 | 2010-09-30 | Fuji Xerox Co Ltd | Fixing device, image forming apparatus and program |
| US8155541B2 (en) | 2009-04-08 | 2012-04-10 | Kabushiki Kaisha Toshiba | Fixing device which detects anomaly of heater |
| US8447200B2 (en) | 2009-12-24 | 2013-05-21 | Samsung Electronics Co., Ltd. | Fusing device, image forming apparatus having the same, and control method thereof |
| JP2012095481A (en) * | 2010-10-28 | 2012-05-17 | Kyocera Mita Corp | Charging control device and image forming apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002184554A (en) | Heating device and fixing device as well as image forming device using it | |
| JP4578178B2 (en) | Image forming apparatus | |
| US7333743B2 (en) | Fixing device, image forming apparatus including the fixing device, and fixing method | |
| JP4866031B2 (en) | Image forming apparatus | |
| US7551869B2 (en) | Fixing device, image forming apparatus including the fixing device, and fixing method | |
| JP4530770B2 (en) | Fixing apparatus and image forming apparatus | |
| EP1542085B1 (en) | Heating device with power supplies, fixing device using the heating device and image forming apparatus using the fixing device | |
| JP2006078771A (en) | Fixing device and image forming apparatus | |
| JP4614086B2 (en) | Fixing apparatus and image forming apparatus | |
| JP2002280146A (en) | Heating device, fixing device and image forming device | |
| JP2003257590A (en) | Heating device, and fixing device and image forming device using the same | |
| JP4494762B2 (en) | Image forming apparatus and auxiliary power supply method for image forming apparatus | |
| JP4376082B2 (en) | Fixing apparatus and image forming apparatus | |
| JP5240344B2 (en) | Image forming apparatus | |
| JP2005017564A (en) | Fixing device and image forming apparatus using the same | |
| JP2007156034A (en) | Image forming apparatus | |
| JP2011180619A (en) | Image forming apparatus | |
| JP2004253349A (en) | Heating device, fixing device, and image forming apparatus | |
| JP4230344B2 (en) | Image forming apparatus | |
| JP4878344B2 (en) | Image forming apparatus | |
| JP4244066B2 (en) | Image forming apparatus | |
| JP2004296166A (en) | Heating device, fixing device using it, and image forming device using the fixing device | |
| JP4950132B2 (en) | Heating device and image forming apparatus using the same | |
| JP2005216786A (en) | Heating device, fixing device using it, and image forming device | |
| JP2009003448A (en) | Image forming apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050916 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061219 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070219 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070619 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070803 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080205 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080326 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20080415 |
|
| A912 | Removal of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20080516 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20091207 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20091209 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20100115 |