JPH0243076A - Heater controller in printer device - Google Patents
Heater controller in printer deviceInfo
- Publication number
- JPH0243076A JPH0243076A JP19392688A JP19392688A JPH0243076A JP H0243076 A JPH0243076 A JP H0243076A JP 19392688 A JP19392688 A JP 19392688A JP 19392688 A JP19392688 A JP 19392688A JP H0243076 A JPH0243076 A JP H0243076A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- temperature
- voltage
- power
- supply
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はプリンタ装置に関し、特にプリンタ装置のトナ
ーの定着に使用するヒータの制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device, and more particularly to a control device for a heater used for fixing toner in a printer device.
［従来の技術］
従来、この種のヒータの温度制御は、ヒータの温度を検
出し、ヒータの温度があらかじめ定められた上限温度よ
り高い場合はヒータの電源をオフとし、逆にあらかじめ
定められた下限温度より低い場合は、ヒータの電源をオ
ンとするという、温度のみを制御パラメータとする単な
るオン−オフ制御をすることにより行なっている。[Prior Art] Conventionally, temperature control of this type of heater involves detecting the temperature of the heater, turning off the power to the heater when the temperature of the heater is higher than a predetermined upper limit temperature, and conversely turning off the heater at a predetermined upper limit temperature. When the temperature is lower than the lower limit temperature, the power to the heater is turned on, which is a simple on-off control using only the temperature as a control parameter.
［発明が解決しようとする課題］
上述した従来のヒータの制御装置は、あらかじめ設定し
たヒータの温度の上限値と下限値により、ヒータへの供
給の電源をオン−オフしており、ヒータの抵抗値は温度
が低いと低く、温度が高いと抵抗値も高いので、ヒータ
温度の設定値にもよるが、供給電源オン時に大電流が流
れ、供給電源にスパイクノイズが発生し同じ電源を使用
している他の機器へ悪影響を生じさせるという問題があ
った。[Problems to be Solved by the Invention] The conventional heater control device described above turns on and off the power supply to the heater based on the upper and lower limits of the heater temperature set in advance. The resistance value is low when the temperature is low, and the resistance value is high when the temperature is high, so although it depends on the heater temperature setting, a large current flows when the power supply is turned on, and spike noise occurs in the power supply, making it difficult to use the same power supply. There was a problem in that it had an adverse effect on other equipment being used.
［課題を解決するための手段］
本発明のプリンタ装置のヒータ制御装置は、プリンタの
トナー定着用のヒータと、該ヒータへ電源を供給する交
流電源と、該ヒータの温度を検出する温度検出回路と、
上記ヒータの温度から該ヒータへの印加電圧を決める演
算回路と、上記ヒータへの電源供給を制御する制御回路
とを有するものである。[Means for Solving the Problems] A heater control device for a printer device according to the present invention includes a heater for toner fixing of the printer, an AC power source that supplies power to the heater, and a temperature detection circuit that detects the temperature of the heater. and,
The heater includes an arithmetic circuit that determines a voltage to be applied to the heater based on the temperature of the heater, and a control circuit that controls power supply to the heater.
［実施例］ 次に、本発明の実施例を図面を参照して説明する。[Example] Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示すブロック図である。ヒ
ータ電源１は通常商用交流電源が使用され、スイッチ７
を通してヒータ２に電源を供給する。スイッチ７は半導
体のスイッチイング素子トランジスタやＳＣＲ等の高速
のスイッチングが可使なものである。ヒータ２の温度は
温度センサー３及び温度検出回路４で検出される。演算
回路５はヒータ２の温度からヒータの抵抗を算出し、ヒ
ータ電［１からヒータ２へ流れる電流があらかじめ設定
した値を越えないようにヒータ２への制御電圧を決定す
る。制御回路６はそのヒータへの制御電圧から、ヒータ
２への供給電圧のスイッチング信号を発生し、ヒータ２
への供給電圧が制御電圧を越えないように制御する。FIG. 1 is a block diagram showing one embodiment of the present invention. The heater power supply 1 is usually a commercial AC power supply, and the switch 7
Power is supplied to the heater 2 through. The switch 7 is a semiconductor switching element capable of high-speed switching such as a transistor or an SCR. The temperature of the heater 2 is detected by a temperature sensor 3 and a temperature detection circuit 4. The arithmetic circuit 5 calculates the resistance of the heater 2 from the temperature of the heater 2, and determines the control voltage to the heater 2 so that the current flowing from the heater voltage 1 to the heater 2 does not exceed a preset value. The control circuit 6 generates a switching signal for the supply voltage to the heater 2 from the control voltage to the heater, and
The voltage supplied to the terminal is controlled so that it does not exceed the control voltage.
第２図は、ヒータへの供給電圧１２と制御電圧１４及び
スイッチング信号１５の電圧レベルと時間関係及びヒー
タ電源ｌの出力電圧波形及び最大電圧１３との関係を示
している。即ち、スイッチ７は制御回路６からの制御に
よりオン−オフし、斜線で示した区間のみヒータ２へ電
圧を印加する。FIG. 2 shows the relationship between the supply voltage 12 to the heater, the voltage levels of the control voltage 14 and the switching signal 15, and the time relationship, and the relationship between the output voltage waveform of the heater power source 1 and the maximum voltage 13. That is, the switch 7 is turned on and off under control from the control circuit 6, and voltage is applied to the heater 2 only in the shaded area.
［発明の効果］
以上説明したように本発明に係るプリンタ装置のヒータ
制御装置は、プリンタのトナー定着用のヒータと、該ヒ
ータへ電源を供給する交流電源と、該ヒータの温度を検
出する温度検出回路と、上記ヒータの温度から該ヒータ
への印加電圧を決める演算回路と、上記ヒータへの電源
供給を制御する制御回路とを有するものとしたので、ヒ
ータへの供給電圧をヒータの温度だけでなく温度とヒー
タの抵抗との関係によって制御することにより、ヒータ
への電流が設定した値を越えないようにできるため、ヒ
ータへの供給電源の突入電流が大電流にならぬように抑
え、また供給電源への大。[Effects of the Invention] As explained above, the heater control device for a printer device according to the present invention includes a heater for fixing toner in a printer, an AC power supply for supplying power to the heater, and a temperature control device for detecting the temperature of the heater. Since it has a detection circuit, an arithmetic circuit that determines the voltage to be applied to the heater based on the temperature of the heater, and a control circuit that controls the power supply to the heater, the voltage supplied to the heater can be controlled only by the temperature of the heater. By controlling the relationship between the temperature and the resistance of the heater, it is possible to prevent the current to the heater from exceeding the set value, thereby suppressing the inrush current of the power supply to the heater from becoming a large current. Also large to supply power.
突入電流によるスパイクノイズの発生を抑えて同じ供給
電源を使用する他機器への悪影響防止に役立つという効
果がある。This has the effect of suppressing the generation of spike noise due to inrush current and helping to prevent adverse effects on other devices that use the same power supply.
第１図は本発明の一実施例を示すブロック図、第２図は
第１図の実施例の動作を示す信号のタイミング図である
。
１：ヒータ電源 ２：ヒータ３：温度センサ
ー ４：温度検出回路５：演算回路
６：制御回路７：スイッチング素子FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a signal timing chart showing the operation of the embodiment of FIG. 1: Heater power supply 2: Heater 3: Temperature sensor 4: Temperature detection circuit 5: Arithmetic circuit
6: Control circuit 7: Switching element
Claims (1)
供給する交流電源と、該ヒータの温度を検出する温度検
出回路と、上記ヒータの温度から該ヒータへの印加電圧
を決める演算回路と、上記ヒータへの電源供給を制御す
る制御回路とを有するプリンタ装置のヒータ制御装置。a heater for toner fixing of the printer; an AC power source for supplying power to the heater; a temperature detection circuit for detecting the temperature of the heater; an arithmetic circuit that determines a voltage to be applied to the heater from the temperature of the heater; A heater control device for a printer device, comprising a control circuit that controls power supply to a heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19392688A JPH0243076A (en) | 1988-08-03 | 1988-08-03 | Heater controller in printer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19392688A JPH0243076A (en) | 1988-08-03 | 1988-08-03 | Heater controller in printer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243076A true JPH0243076A (en) | 1990-02-13 |
Family
ID=16316042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19392688A Pending JPH0243076A (en) | 1988-08-03 | 1988-08-03 | Heater controller in printer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243076A (en) |
-
1988
- 1988-08-03 JP JP19392688A patent/JPH0243076A/en active Pending
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