JPH09197895A - Thermal fixing device - Google Patents
Thermal fixing deviceInfo
- Publication number
- JPH09197895A JPH09197895A JP2309096A JP2309096A JPH09197895A JP H09197895 A JPH09197895 A JP H09197895A JP 2309096 A JP2309096 A JP 2309096A JP 2309096 A JP2309096 A JP 2309096A JP H09197895 A JPH09197895 A JP H09197895A
- Authority
- JP
- Japan
- Prior art keywords
- fixing device
- heat
- heater
- temperature
- operation mode
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機等における
熱定着装置、より詳細には、電気ヒータを熱源とする熱
定着装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat fixing device in a copying machine or the like, and more particularly to a heat fixing device using an electric heater as a heat source.
【０００２】[0002]
【従来の技術】電子写真装置には、従来より、熱定着の
熱源として立ち上がりの早い、すなわち、通電を開始し
てから短時間で被加熱物の温度を高くすることが出来る
ハロゲンランプをヒータとして使用している。このハロ
ゲンランプを用いたヒータは、消費電力が１ｋＷ前後と
大きく、ＯＮ時には１０Ａ前後の大きな定常電流が流れ
る。また、ＯＦＦ状態からＯＮしたときには、定常時の
約１０倍の突入電流が流れる。この大きな突入電流を該
熱定着装置が消費することにより、該熱定着装置が接続
されている交流電源に電圧変動を生じさせてしまう。2. Description of the Related Art Conventionally, a halogen lamp has been used as a heater in an electrophotographic apparatus as a heat source for heat fixing, which is capable of raising the temperature of an object to be heated quickly, that is, in a short time after starting energization. I'm using it. The heater using this halogen lamp has a large power consumption of about 1 kW, and when it is turned on, a large steady current of about 10 A flows. Further, when turned on from the OFF state, an inrush current that is about 10 times that in the steady state flows. The large inrush current consumed by the thermal fixing device causes a voltage fluctuation in the AC power source to which the thermal fixing device is connected.
【０００３】[0003]
【発明が解決しようとする課題】而して、近年、装置を
接続する交流電源に対して、該装置を交流電源に接続し
た時に、該交流電源に電圧変動等の電源妨害の少ない装
置が求められている。しかし、前述のごとき、電子写真
装置の熱定着装置は、温度をほぼ一定に保つために、熱
源のヒータをＯＮ／ＯＦＦしているため、ＯＮするたび
に交流電源に電圧変動をきたし、近くの照明にちらつき
を発生させてしまう。Therefore, in recent years, for an AC power supply for connecting a device, when the device is connected to the AC power supply, a device having less power disturbance such as voltage fluctuation in the AC power supply is demanded. Has been. However, as described above, in the heat fixing device of the electrophotographic apparatus, since the heater of the heat source is turned on / off to keep the temperature substantially constant, each time the heater is turned on, a voltage fluctuation occurs in the AC power source, and the nearby It causes flickering in the lighting.
【０００４】[0004]
【課題を解決するための手段】請求項１の発明は、複数
個の電気ヒータを熱源とする熱定着装置を有し、各ヒー
タへの通電をＯＮ／ＯＦＦ制御することにより熱定着装
置の温度を制御し、熱消費量が異なる複数の動作モード
を有する熱定着装置において、前記複数ある電気ヒータ
のうち、一個のヒータの発熱量を、それぞれの動作モー
ドにおける熱消費量の変動量のなかの最大の変動量より
も大きくし、もって、ＯＮ／ＯＦＦ制御するヒータを、
複数あるヒータのうちの一個だけとし、各動作モード内
での定常電流による電圧変動を小さくしたものである。According to the present invention, there is provided a thermal fixing device having a plurality of electric heaters as heat sources, and the temperature of the thermal fixing device is controlled by controlling ON / OFF of energization to each heater. In the thermal fixing device having a plurality of operation modes in which the heat consumption amount is different, the heat generation amount of one of the plurality of electric heaters is set as a variation amount of the heat consumption amount in each operation mode. Set the heater to be larger than the maximum fluctuation amount and control ON / OFF.
Only one of the plurality of heaters is used to reduce the voltage fluctuation due to the steady current in each operation mode.
【０００５】請求項２の発明は、複数個の電気ヒータを
熱源とする熱定着装置を有し、各ヒータへの通電をＯＮ
／ＯＦＦ制御することにより熱定着装置の温度を制御
し、熱消費量が異なる複数の動作モードを有し、前記複
数ある電気ヒータのうち、一個のヒータの発熱量を、そ
れぞれの動作モードにおける熱消費量の変動量のなかの
最大の変動量よりも大きくした熱定着装置において、前
記ヒータとして、ニクロム線ヒータを使用し、もって、
突入電流による電圧変動を小さくしたものである。According to a second aspect of the present invention, there is provided a thermal fixing device having a plurality of electric heaters as heat sources, and each heater is energized.
The temperature of the heat fixing device is controlled by controlling ON / OFF, and a plurality of operation modes having different heat consumptions are provided. Among the plurality of electric heaters, the heat generation amount of one heater is set to the heat amount in each operation mode. In the thermal fixing device in which the fluctuation amount of the consumption amount is larger than the maximum fluctuation amount, a nichrome wire heater is used as the heater.
The voltage fluctuation due to the inrush current is reduced.
【０００６】請求項３の発明は、複数個の電気ヒータを
熱源とする熱定着装置を有し、各ヒータへの通電をＯＮ
／ＯＦＦ制御することにより熱定着装置の温度を制御
し、熱消費量が大きい第一の動作モードと、熱消費量が
それより小さい第二の動作モードを有する熱定着装置に
おいて、前記電気ヒータは、ハロゲンランプヒータと、
ニクロム線ヒータとからなり、第一の動作モードにおい
ては、ハロゲンランプヒータを常にＯＮさせ、ニクロム
線ヒータをＯＮ／ＯＦＦ制御することにより熱定着装置
の温度を制御し、第二の動作モードにおいては、ハロゲ
ンランプヒータを常にＯＦＦさせ、ニクロム線ヒータを
ＯＮ／ＯＦＦ制御することを特徴とし、もって、ヒータ
のＯＮ／ＯＦＦ動作に、ＯＮ時の突入電流の小さいニク
ロム線ヒータを用いるようにし、突入電流による電圧変
動を小さくするとともに、熱定着装置の立ち上りを早く
するようにしたものである。According to a third aspect of the present invention, a heat fixing device having a plurality of electric heaters as heat sources is provided, and each heater is turned on.
In the thermal fixing device, the temperature of the thermal fixing device is controlled by performing ON / OFF control, and the electric heater has a first operation mode in which the heat consumption is large and a second operation mode in which the heat consumption is smaller. , Halogen lamp heater,
In the first operation mode, the halogen lamp heater is always turned on and the nichrome wire heater is turned on / off to control the temperature of the thermal fixing device. In the second operation mode, the nichrome wire heater is used. The halogen lamp heater is always turned off, and the nichrome wire heater is controlled to be turned on / off. Therefore, the nichrome wire heater with a small inrush current at ON is used for the heater on / off operation, and the inrush current is controlled. It is intended to reduce the voltage fluctuation due to the above and to speed up the start-up of the thermal fixing device.
【０００７】[0007]
【発明の実施の形態】図１は、本発明による熱定着装置
の一実施例を説明するための電気回路図で、図中、１０
は熱定着装置、１１は温度検出素子（サーミスタ）、１
２はマイコン、１３は交流電源で、熱定着装置１０は、
ハロゲンランプヒータＨ1とニクロム線ヒータＨ2を有
し、これらヒータＨ1，Ｈ2は、マイコン１２によってオ
ン、オフ制御されるスイッチング素子１，２を通して交
流電源１３により加熱される。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an electric circuit diagram for explaining an embodiment of a heat fixing device according to the present invention.
Is a heat fixing device, 11 is a temperature detecting element (thermistor), 1
2 is a microcomputer, 13 is an AC power supply, and the thermal fixing device 10 is
It has a halogen lamp heater H 1 and a nichrome wire heater H 2 , and these heaters H 1 and H 2 are heated by an AC power supply 13 through switching elements 1 and 2 which are controlled to be turned on and off by a microcomputer 12.
【０００８】図１において、ハロゲンランプを用いたヒ
ータＨ1は、スイッチング素子であるトライアック１に
直列に接続され、ニクロム線ヒータＨ2は、トライアッ
ク２に直列に接続され、それぞれ交流電源１３に接続さ
れている。熱定着装置１０には、温度センサであるサー
ミスタ１１が取り付けられている。この定着装置１０の
温度を制御するマイコン１２は、前述のサーミスタ１１
の抵抗値の変化により定着装置の温度を検知する。そし
て、定着装置の温度が設定温度よりも低いときには、絶
縁のためのフォトトライアック４を介して、トライアッ
ク２にトリガ信号を送り、該トライアック２をＯＮし、
ニクロム線ヒータＨ2に通電して発熱させる。熱定着装
置１０が設定温度よりも高くなれば、マイコン１２は、
トライアック２へのトリガ信号の発生を停止し、ニクロ
ム線ヒータＨ2への通電を止める。In FIG. 1, a heater H 1 using a halogen lamp is connected in series to a triac 1 which is a switching element, and a nichrome wire heater H 2 is connected in series to a triac 2 and connected to an AC power source 13, respectively. Has been done. A thermistor 11, which is a temperature sensor, is attached to the thermal fixing device 10. The microcomputer 12 that controls the temperature of the fixing device 10 includes the thermistor 11 described above.
The temperature of the fixing device is detected by the change in the resistance value of. When the temperature of the fixing device is lower than the set temperature, a trigger signal is sent to the triac 2 via the phototriac 4 for insulation to turn on the triac 2.
The nichrome wire heater H 2 is energized to generate heat. If the heat fixing device 10 becomes higher than the set temperature, the microcomputer 12
The generation of the trigger signal to the triac 2 is stopped, and the power supply to the nichrome wire heater H 2 is stopped.
【０００９】また、マイコン１２は、図示していない装
置全体を制御する制御部からの画像形成開始信号を受け
ると、絶縁のためのフォトトライアック３を介して、ト
ライアック１にトリガ信号を送り、トライアック１をＯ
Ｎし、ハロゲンランプを用いたヒータＨ1に通電し、該
ハロゲンランプヒータＨ1を発熱させる。そして、画像
形成終了信号を受けると、マイコン１２は、トライアッ
ク１へのトリガ信号の発生を停止し、ハロゲンランプＨ
1を用いたヒータへの通電を止める。Further, when the microcomputer 12 receives an image formation start signal from a control unit for controlling the entire apparatus (not shown), it sends a trigger signal to the triac 1 via the phototriac 3 for insulation, and the triac 1 1 for O
Then, the heater H 1 using a halogen lamp is energized to heat the halogen lamp heater H 1 . When the image formation end signal is received, the microcomputer 12 stops the generation of the trigger signal to the triac 1, and the halogen lamp H
Stop energizing the heater with 1 .
【００１０】今、本装置に電源を投入し、本装置を立上
げる時、定着装置１０の温度が設定温度よりも低いとき
には、定着装置が設定温度に達するまで、ハロゲンラン
プを用いたヒータＨ1に通電し、発熱させる。したがっ
て、装置の立上り時で、定着装置が冷えているときは、
ハロゲンランプを用いたヒータＨ1とニクロム線ヒータ
Ｈ2の両方に通電して設定温度に達するまで加熱する。
そして、設定温度に達すると、定着装置を設定温度に保
つだけの熱消費量が少ない動作モードである待機状態と
し、ハロゲンランプを用いたヒータＨ1への通電を止
め、前述のように、サーミスタ１１による検知温度によ
り、ニクロム線ヒータＨ2をＯＮ／ＯＦＦ制御して、定
着装置の温度を設定温度に保つ。Now, when the temperature of the fixing device 10 is lower than the set temperature when the power of the device is turned on and the device is started up, a heater H 1 using a halogen lamp is used until the fixing device reaches the set temperature. Energize to generate heat. Therefore, when the fixing device is cold when the device starts up,
Both the heater H 1 using a halogen lamp and the nichrome wire heater H 2 are energized and heated until the set temperature is reached.
Then, when the temperature reaches the set temperature, the fixing device is set to a standby state, which is an operation mode in which the amount of heat consumption for keeping the set temperature is small, and the heater H 1 using the halogen lamp is de-energized. The nichrome wire heater H 2 is ON / OFF controlled by the temperature detected by 11 to maintain the temperature of the fixing device at the set temperature.
【００１１】紙などの画像支持体とトナーを加熱するた
めに熱消費量が大きい動作モードである画像形成状態と
なると、ハロゲンランプを用いたヒータＨ1に通電し、
前述のように検知温度により、ニクロム線ヒータＨ2を
ＯＮ／ＯＦＦ制御して、定着装置の温度を設定温度に保
つ。待機状態での熱消費量は、装置が置かれている場所
の室温により異なり、装置の使用温度範囲では、例え
ば、２００Ｗ〜１５０Ｗであり、変動量は、５０Ｗであ
る。画像形成状態での熱消費量は、使用する画像支持体
の種類、厚さ、大きさや形成速度により異なり、装置で
使用できる画像支持体の範囲では、例えば、１０００Ｗ
〜６００Ｗであり、変動量は、４００Ｗである。したが
って、この場合、ＯＮ／ＯＦＦ制御するニクロム線ヒー
タＨ2は、４００Ｗより大きい５００Ｗのヒータを用い
る。ハロゲンランプを用いたヒータＨ1には、５００Ｗ
のものを用いる。When an image forming state, which is an operation mode in which a large amount of heat is consumed to heat the image support such as paper and the toner, is set, the heater H 1 using a halogen lamp is energized,
As described above, the nichrome wire heater H 2 is ON / OFF controlled by the detected temperature to maintain the temperature of the fixing device at the set temperature. The heat consumption amount in the standby state varies depending on the room temperature of the place where the device is placed, and in the operating temperature range of the device, for example, is 200 W to 150 W, and the variation amount is 50 W. The heat consumption in the image forming state varies depending on the type, thickness, size and forming speed of the image support to be used, and in the range of the image support usable in the apparatus, for example, 1000 W
˜600 W, and the variation amount is 400 W. Therefore, in this case, as the nichrome wire heater H 2 for ON / OFF control, a heater of 500 W, which is larger than 400 W, is used. Heater H 1 using a halogen lamp has 500W
Use the one.
【００１２】[0012]
【発明の効果】請求項１の発明は、複数個の電気ヒータ
を熱源とする熱定着装置を有し、各ヒータへの通電をＯ
Ｎ／ＯＦＦ制御することにより熱定着装置の温度を制御
し、熱消費量が異なる複数の動作モードを有する熱定着
装置において、前記複数ある電気ヒータのうち、一個の
ヒータの発熱量を、それぞれの動作モードにおける熱消
費量の変動量のなかの最大の変動量よりも大きくしたこ
とを特徴としたもので、前記実施例で説明すると、熱定
着装置としては、合計１０００Ｗのヒータが必要である
が、５００Ｗのヒータ２本にすることにより、各動作モ
ード内では、熱定着装置の温度を制御するためにＯＮ／
ＯＦＦ制御するヒータは、５００Ｗのヒータ一個だけに
なり、各動作モード内での定常電流による電圧変動を小
さく出来る。According to the present invention, there is provided a thermal fixing device having a plurality of electric heaters as heat sources, and each heater is energized by O
By controlling the temperature of the heat fixing device by performing N / OFF control, and in a heat fixing device having a plurality of operation modes with different heat consumption amounts, the heat generation amount of one of the plurality of electric heaters is set to It is characterized in that it is set to be larger than the maximum fluctuation amount of the heat consumption amount in the operation mode. As described in the above embodiment, the heat fixing device requires a heater of 1000 W in total. , By using two heaters of 500 W, it is turned on / off in order to control the temperature of the heat fixing device in each operation mode.
The heater to be turned off is only one heater of 500 W, and the voltage fluctuation due to the steady current in each operation mode can be reduced.
【００１３】請求項２の発明は、複数個の電気ヒータを
熱源とする熱定着装置を有し、各ヒータへの通電をＯＮ
／ＯＦＦ制御することにより熱定着装置の温度を制御
し、熱消費量が異なる複数の動作モードを有し、前記複
数ある電気ヒータのうち、一個のヒータの発熱量を、そ
れぞれの動作モードにおける熱消費量の変動量のなかの
最大の変動量よりも大きくした熱定着装置において、前
記ヒータとして、ニクロム線ヒータを使用することを特
徴としたもので、熱定着装置の温度を制御するためにＯ
Ｎ／ＯＦＦ制御するヒータに、ＯＮ時の突入電流がハロ
ゲンランプヒータより小さいニクロム線ヒータを使用し
たので、突入電流による電圧変動を小さくできる。According to a second aspect of the present invention, there is provided a heat fixing device having a plurality of electric heaters as heat sources, and the power to each heater is turned on.
The temperature of the heat fixing device is controlled by controlling ON / OFF, and a plurality of operation modes having different heat consumptions are provided. Among the plurality of electric heaters, the heat generation amount of one heater is set to the heat amount in each operation mode. In the thermal fixing device in which the fluctuation amount of the consumption amount is made larger than the maximum fluctuation amount, a nichrome wire heater is used as the heater, and in order to control the temperature of the thermal fixing device.
Since the nichrome wire heater whose inrush current when ON is smaller than that of the halogen lamp heater is used as the heater for N / OFF control, the voltage fluctuation due to the inrush current can be reduced.
【００１４】請求項３の発明は、複数個の電気ヒータを
熱源とする熱定着装置を有し、各ヒータへの通電をＯＮ
／ＯＦＦ制御することにより熱定着装置の温度を制御
し、熱消費量が大きい第一の動作モードと、熱消費量が
それより小さい第二の動作モードを有する熱定着装置に
おいて、前記電気ヒータを、ハロゲンランプヒータと、
ニクロム線ヒータとし、第一の動作モードにおいては、
ハロゲンランプヒータを常にＯＮさせ、ニクロム線ヒー
タをＯＮ／ＯＦＦ制御することにより熱定着装置の温度
を制御し、第二の動作モードにおいては、ハロゲンラン
プヒータを常にＯＦＦさせ、ニクロム線ヒータをＯＮ／
ＯＦＦ制御することにより熱定着装置の温度を制御する
ことを特徴としたもので、熱定着装置の温度を制御する
ためにＯＮ／ＯＦＦ制御するヒータに、ＯＮ時の突入電
流がハロゲンランプヒータより小さいニクロム線ヒータ
を使用したので、突入電流による電圧変動を小さくする
ことができる。また、各動作モード内ではＯＮ／ＯＦＦ
しないヒータに、ＯＮしたときの加熱が早いハロゲンラ
ンプヒータを使用することにより、熱定着装置の立ち上
りを早くすることができる。According to a third aspect of the present invention, there is provided a heat fixing device having a plurality of electric heaters as heat sources, and each heater is energized.
The temperature of the heat fixing device is controlled by controlling ON / OFF, and in the heat fixing device having the first operation mode in which the heat consumption is large and the second operation mode in which the heat consumption is smaller, the electric heater is , Halogen lamp heater,
As a nichrome wire heater, in the first operation mode,
The halogen lamp heater is always turned on and the nichrome wire heater is turned on / off to control the temperature of the heat fixing device. In the second operation mode, the halogen lamp heater is always turned off and the nichrome wire heater is turned on / off.
It is characterized by controlling the temperature of the heat fixing device by controlling the OFF, and the rush current at the time of ON is smaller than that of the halogen lamp heater in the heater which is ON / OFF controlled to control the temperature of the heat fixing device. Since the nichrome wire heater is used, the voltage fluctuation due to the inrush current can be reduced. Also, ON / OFF in each operation mode
By using a halogen lamp heater that quickly heats when turned on as a heater that does not turn on, the heat fixing device can be started up quickly.
【図１】 本発明による熱定着装置の一実施例を説明す
るための電気回路図である。FIG. 1 is an electric circuit diagram for explaining an embodiment of a heat fixing device according to the present invention.
【符号の説明】 １，２…トライアック、３，４…フォトトライアック、
１０…熱定着装置、１１…サーミスタ、１２…マイコ
ン、１３…交流電源。[Explanation of Codes] 1, ... Triac, 3, 4 ... Phototriac,
10 ... Thermal fixing device, 11 ... Thermistor, 12 ... Microcomputer, 13 ... AC power supply.
Claims (3)
装置を有し、各ヒータへの通電をＯＮ／ＯＦＦ制御する
ことにより熱定着装置の温度を制御し、熱消費量が異な
る複数の動作モードを有する熱定着装置において、前記
複数ある電気ヒータのうち、一個のヒータの発熱量が、
それぞれの動作モードにおける熱消費量の変動量のなか
の最大の変動量よりも大きいことを特徴とする熱定着装
置。1. A thermal fixing device having a plurality of electric heaters as heat sources, wherein the temperature of the thermal fixing device is controlled by controlling ON / OFF of electricity to each heater, and a plurality of heat consuming devices having different heat consumptions are controlled. In a thermal fixing device having an operation mode, the heat generation amount of one of the plurality of electric heaters is
A thermal fixing device characterized by being larger than the maximum fluctuation amount of the fluctuation amount of heat consumption in each operation mode.
装置を有し、各ヒータへの通電をＯＮ／ＯＦＦ制御する
ことにより熱定着装置の温度を制御し、熱消費量が異な
る複数の動作モードを有し、前記複数ある電気ヒータの
うち、一個のヒータの発熱量が、それぞれの動作モード
における熱消費量の変動量のなかの最大の変動量よりも
大きい熱定着装置において、前記ヒータとして、ニクロ
ム線ヒータを使用することを特徴とする熱定着装置。2. A thermal fixing device having a plurality of electric heaters as heat sources, wherein the temperature of the thermal fixing device is controlled by controlling ON / OFF of electricity to each heater, and a plurality of heat consuming devices differ in heat consumption. In the thermal fixing device having an operation mode, the heat generation amount of one of the plurality of electric heaters is larger than the maximum variation amount of the heat consumption variation amount in each operation mode, As a heat fixing device, a nichrome wire heater is used.
装置を有し、各ヒータへの通電をＯＮ／ＯＦＦ制御する
ことにより熱定着装置の温度を制御し、熱消費量が大き
い第一の動作モードと、熱消費量がそれより小さい第二
の動作モードを有する熱定着装置において、前記電気ヒ
ータは、ハロゲンランプヒータと、ニクロム線ヒータと
からなり、第一の動作モードにおいては、ハロゲンラン
プヒータを常にＯＮさせ、ニクロム線ヒータをＯＮ／Ｏ
ＦＦ制御することにより熱定着装置の温度を制御し、第
二の動作モードにおいては、ハロゲンランプヒータを常
にＯＦＦさせ、ニクロム線ヒータをＯＮ／ＯＦＦ制御す
ることにより熱定着装置の温度を制御することを特徴と
する熱定着装置。3. A heat fixing device having a plurality of electric heaters as heat sources, wherein the temperature of the heat fixing device is controlled by controlling ON / OFF of electricity to each heater, and a large amount of heat is consumed. And a second operation mode in which the heat consumption is smaller than the above, the electric heater includes a halogen lamp heater and a nichrome wire heater, and in the first operation mode, a halogen lamp heater and a nichrome wire heater are used. Always turn on the lamp heater and turn on / off the nichrome wire heater.
The temperature of the heat fixing device is controlled by FF control, and in the second operation mode, the halogen lamp heater is always turned off and the nichrome wire heater is turned on / off to control the temperature of the heat fixing device. A heat fixing device characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309096A JPH09197895A (en) | 1996-01-16 | 1996-01-16 | Thermal fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309096A JPH09197895A (en) | 1996-01-16 | 1996-01-16 | Thermal fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09197895A true JPH09197895A (en) | 1997-07-31 |
Family
ID=12100738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2309096A Pending JPH09197895A (en) | 1996-01-16 | 1996-01-16 | Thermal fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09197895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0924576A2 (en) * | 1997-12-19 | 1999-06-23 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
-
1996
- 1996-01-16 JP JP2309096A patent/JPH09197895A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0924576A2 (en) * | 1997-12-19 | 1999-06-23 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
| EP0924576A3 (en) * | 1997-12-19 | 2000-07-19 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
| US6240263B1 (en) | 1997-12-19 | 2001-05-29 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1178369B1 (en) | Heater control apparatus and image forming apparatus | |
| JPH1116661A (en) | Heating control device and image forming device | |
| JPH04235583A (en) | Temperature controller | |
| JPS58105180A (en) | Device for controlling electric power of copying machine | |
| JP3909177B2 (en) | Image forming apparatus | |
| JPH09258601A (en) | Method for controlling temperature for heating fixing device and device therefor | |
| JPH09197895A (en) | Thermal fixing device | |
| JP3444455B2 (en) | Fixing heater current control method | |
| JP2000194237A (en) | Heating device, fixing device and image forming device | |
| JP2008233167A (en) | Power controller | |
| JP2005258346A (en) | Power control device, image forming apparatus and power control program | |
| JP2001022220A (en) | Fixing device | |
| JPH09230740A (en) | Electric heater controller | |
| JP2003131516A (en) | Fixing device | |
| JPH09197894A (en) | Fixing heater controller | |
| JP3855566B2 (en) | Heat treatment apparatus and image forming apparatus | |
| JP3378713B2 (en) | Image forming device | |
| JPS63253977A (en) | Temperature controller for fixing device | |
| JP2007121354A (en) | Heating device and electrophotographic apparatus | |
| JP4161539B2 (en) | Heater control device and image forming apparatus | |
| JPH03221983A (en) | Image forming device | |
| JP2006058396A (en) | Image forming apparatus | |
| JP2000267496A (en) | Fixing device and image forming device provided with the same | |
| JP2004200179A (en) | Electric heater controlling device | |
| JPH09244466A (en) | Fixing heater and exposure light source controller |