JPH07110031B2 - Fax machine - Google Patents
Fax machineInfo
- Publication number
- JPH07110031B2 JPH07110031B2 JP63242797A JP24279788A JPH07110031B2 JP H07110031 B2 JPH07110031 B2 JP H07110031B2 JP 63242797 A JP63242797 A JP 63242797A JP 24279788 A JP24279788 A JP 24279788A JP H07110031 B2 JPH07110031 B2 JP H07110031B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- power supply
- supply unit
- load
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Facsimiles In General (AREA)
- Non-Adjustable Resistors (AREA)
- Control Of Temperature (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はファクシミリ装置に関し、特にファクシミリ装
置内部の電源ユニットの過熱制御に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine, and more particularly to overheat control of a power supply unit inside the facsimile machine.
従来、ファクシミリ装置の過熱制御は次のような方法で
行われることが多かった。Conventionally, the overheat control of a facsimile apparatus is often performed by the following method.
１）電源ユニット自体がその内部温度を監視しており一
定温度以上になると、電源ユニットの保護のため電源出
力を停止する。1) The power supply unit itself monitors its internal temperature, and when it exceeds a certain temperature, power supply output is stopped to protect the power supply unit.
２）電源ユニットが検知した温度情報を装置側で読取
り、電源ユニットに対して出力断を指示する。この指示
により電源ユニットは出力を停止する。2) The temperature information detected by the power supply unit is read on the device side and the power supply unit is instructed to cut off the output. The power supply unit stops the output according to this instruction.
上述した従来のファクシミリ装置の過熱制御方法は、次
のような問題がある。The above-described conventional overheat control method for a facsimile device has the following problems.
前記１）の例では温度の監視、出力の停止、出力の復旧
をすべて電源ユニット内部で行わなければならないため
電源ユニットの構成が複雑になる。また装置側では予期
せず電源が落ちるためメモリの待避が間に合わず装置の
異常状態を引き起こす恐れがある。In the above example 1), temperature monitoring, output stoppage, and output restoration must all be performed inside the power supply unit, which complicates the configuration of the power supply unit. Further, since the power supply of the device unexpectedly goes down, the memory may not be saved in time, which may cause an abnormal state of the device.
前記２）の例では出力の停止、復旧の指示は装置側で行
うものの停止、復旧の動作そのものは電源ユニット内部
で行うため、前記１）の例に比べて電源ユニットの構成
は簡単にならない。In the example of 2) above, although the output stop / recovery instruction is given on the device side, the operation of the stop / recovery itself is performed inside the power supply unit. Therefore, the configuration of the power supply unit is not simple as compared with the example of 1) above.
本発明の目的は、電源ユニットを複雑にしないで過熱制
御ができるファクシミリ装置を提供することにある。An object of the present invention is to provide a facsimile apparatus that can control overheating without complicating a power supply unit.
本発明のファクシミリ装置は、電源ユニット内部の温度
を検知する温度センサを有する電源ユニットと、前記温
度センサの出力を監視し電源の内部温度が予め定めた一
定温度を越えたかどうかあるいは下回ったかどうか判断
する判断回路と、前記判断回路が前記一定温度を越えた
と判断した場合には電源の負荷を減らすように制御し、
前記一定温度を下回ったと判断した場合には予め定めた
一定時間経過後、電源の負荷を減らす前の状態に戻すよ
うに制御する制御回路とを有している。The facsimile apparatus of the present invention monitors a power supply unit having a temperature sensor for detecting the temperature inside the power supply unit, and monitors the output of the temperature sensor to determine whether the internal temperature of the power supply exceeds or falls below a predetermined constant temperature. And a determination circuit for controlling to reduce the load of the power source when the determination circuit determines that the temperature exceeds the certain temperature,
When it is determined that the temperature has dropped below the predetermined temperature, the control circuit controls so that after a predetermined time has passed, the load of the power source is returned to the state before the reduction.
次に、本発明の実施例について図面を参照して説明す
る。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のファクシミリ装置の過熱制
御に関するブロック図である。１はファクシミリ装置、
２は電源ユニット、３は温度センサ（サーミスタを含
む）で電源ユニット内部の温度変化を電圧の変化の形で
装置側へ伝える（温度が上がると電圧も上がる）。な
お、ここでは電源ユニット以外の部分を装置側と呼ぶ。FIG. 1 is a block diagram relating to overheat control of a facsimile apparatus according to an embodiment of the present invention. 1 is a facsimile machine,
Reference numeral 2 is a power supply unit, and 3 is a temperature sensor (including a thermistor), which transmits a temperature change inside the power supply unit to the apparatus side in the form of a voltage change (when the temperature rises, the voltage rises). Note that, here, the parts other than the power supply unit are called the device side.
４は判断回路で、温度センサ３の出力電圧が予め定めた
一定温度に相当する電圧を越えたと判断するとこれを制
御回路５に伝える。制御回路５はこれを受けて電源の負
荷６の消費電流を減らすように制御を行う。図示してい
ないが、モータの回転の停止、サーマルヘッドによる記
録印字の停止を行う。負荷を切り離すためのスイッチ回
路などを特別に設けたりはしていない。７は、電源出力
である。Reference numeral 4 denotes a judgment circuit, which notifies the control circuit 5 when it judges that the output voltage of the temperature sensor 3 has exceeded a voltage corresponding to a predetermined constant temperature. In response to this, the control circuit 5 controls to reduce the current consumption of the load 6 of the power supply. Although not shown, the rotation of the motor and the recording / printing by the thermal head are stopped. No special switch circuit is provided to disconnect the load. Reference numeral 7 is a power supply output.
判断回路４は、負荷を減らしたために電源ユニット２の
内部温度が下がり、温度センサ３の出力電圧が予め定め
た一定温度に相当する電圧を下回ったと判断するとこれ
を制御回路５に伝える。制御回路５はこれを受けると予
め定めた一定時間経過後、電源の負荷状態を減らす前の
状態に戻す様に制御を行う。一定時間待つのは、すぐに
戻すとまたすぐに過熱するのを避けるためである。When the judgment circuit 4 judges that the internal temperature of the power supply unit 2 has dropped due to the reduction of the load and the output voltage of the temperature sensor 3 has fallen below a voltage corresponding to a predetermined constant temperature, the judgment circuit 4 notifies the control circuit 5 of this. Upon receiving this, the control circuit 5 performs control so as to return to the state before the load state of the power source is reduced after a predetermined time has elapsed. The reason for waiting for a certain period of time is to avoid overheating soon after returning immediately.
以上説明したように本発明は、温度センサ以外の過熱制
御回路を電源ユニットから分離することにより電源ユニ
ットの構成を簡単しに、あわせて装置側の負荷制御をわ
ざわざ専用のスイッチ回路などをもたずに実現すること
により（上述の判断回路、制御回路は通常のファクシミ
リの有するマイクロ・コンピュータのプログラミングに
より容易に実現できる）ファクシミリ装置に低価格化を
もたらすという効果がある。As described above, the present invention simplifies the configuration of the power supply unit by separating the overheat control circuit other than the temperature sensor from the power supply unit, and also has a dedicated switch circuit for the purpose of load control on the device side. Without realizing it (the above-mentioned judgment circuit and control circuit can be easily realized by programming of a microcomputer included in an ordinary facsimile), there is an effect that the cost of the facsimile machine can be reduced.
第１図は本発明の実施例を示すブロック図である。 １……ファクシミリ装置、２……電源ユニット、３……
温度センサ、４……判断回路、５……制御回路、６……
負荷、７……電源出力。FIG. 1 is a block diagram showing an embodiment of the present invention. 1 ... Facsimile device, 2 ... Power supply unit, 3 ...
Temperature sensor, 4 ... Judgment circuit, 5 ... Control circuit, 6 ...
Load, 7 ... Power output.
Claims (1)
給すると共に電源内部の温度を検知する温度センサを有
する電源ユニットと、前記温度センサの出力を監視し電
源の内部温度が予め定めた一定温度を越えたかどうかあ
るいは下回ったかどうか判断する判断回路と、前記判断
回路が前記一定温度を越えたと判断した場合には電源の
負荷を減らすように制御し、前記一定温度を下回ったと
判断した場合には予め定めた一定時間経過後、電源の負
荷を減らす前の状態に戻すように制御する制御回路とを
有するファクシミリ装置。1. A power supply unit having a temperature sensor for supplying electric power to each circuit section in a facsimile machine and for detecting the temperature inside the power supply, and monitoring the output of the temperature sensor to keep the internal temperature of the power supply constant at a predetermined level. A judgment circuit for judging whether or not the temperature has been exceeded or has dropped, and when the judgment circuit has judged that the temperature has exceeded the certain temperature, the load of the power supply is controlled to be reduced, and when it has been judged that the temperature has dropped below the certain temperature. Is a facsimile machine having a control circuit for controlling to return to a state before the load on the power source is reduced after a predetermined time has elapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63242797A JPH07110031B2 (en) | 1988-09-27 | 1988-09-27 | Fax machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63242797A JPH07110031B2 (en) | 1988-09-27 | 1988-09-27 | Fax machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0290778A JPH0290778A (en) | 1990-03-30 |
| JPH07110031B2 true JPH07110031B2 (en) | 1995-11-22 |
Family
ID=17094433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63242797A Expired - Fee Related JPH07110031B2 (en) | 1988-09-27 | 1988-09-27 | Fax machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07110031B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61197257A (en) * | 1985-02-28 | 1986-09-01 | Shinko Electric Co Ltd | Thermal transfer type printer |
-
1988
- 1988-09-27 JP JP63242797A patent/JPH07110031B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0290778A (en) | 1990-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |