JPH0330955A - Control apparatus of dot matrix printer - Google Patents

Control apparatus of dot matrix printer

Info

Publication number
JPH0330955A
JPH0330955A JP1167539A JP16753989A JPH0330955A JP H0330955 A JPH0330955 A JP H0330955A JP 1167539 A JP1167539 A JP 1167539A JP 16753989 A JP16753989 A JP 16753989A JP H0330955 A JPH0330955 A JP H0330955A
Authority
JP
Japan
Prior art keywords
printing
temperature
charge
discharge circuit
dot matrix
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
Application number
JP1167539A
Other languages
Japanese (ja)
Inventor
Hitoshi Kiyofuji
清藤 均
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP1167539A priority Critical patent/JPH0330955A/en
Publication of JPH0330955A publication Critical patent/JPH0330955A/en
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Impact Printers (AREA)

Abstract

PURPOSE:To perform control while estimating actual temperature and to properly control the temperature of a printing head by reproducing the temperature state of each drive coil in a charge and discharge circuit. CONSTITUTION:A case having 24 printing pins is shown and printing pin driving data D1-D24 driving the respective printing pins of a printing head are generated from a printing data output part 1. A printing timing generating means 2 generates a printing timing signal T and sends the same to a charge and discharge circuit block 3 along with the printing pin driving data D1-D4. The charge and discharge circuit block 3 consists of 24 charge and discharge circuit parts 101-124 and the circuit constitutions thereof are same. Further, a printing control part 4 synthetically judges whether the temperature lowering means of the printing head is executed from the output results of the respective charge and discharge circuit parts 101-124.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は複数の印字ピンを用いて印字を行なうドツトマ
トリックスプリンタの制御方式に関し、特に印字ベツド
の温度を制御するドツトマトリックスプリンタの制御方
式に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a control method for a dot matrix printer that prints using a plurality of printing pins, and more particularly to a control method for a dot matrix printer that controls the temperature of a printing bed. .

〔従来の技術〕[Conventional technology]

従来、この糧のドツトマトリックスプリンタにおいて印
字ヘッドの温度をある温度以下にするためには、印字ヘ
ッドに温度セ/すを実装し、検出温度を印字制御部が監
視し、定められた温度を越えた場合には、温度を低下さ
せる手段を駆動するように行われている。かかる温度を
低下させる方法としては、常に片方向へ(例えば、左か
ら右方向へ)印字する方法、印字動作を一時中断する方
法あるいはファンによる強制空冷を行なう方法等がある
Conventionally, in order to keep the temperature of the print head below a certain temperature in this type of dot matrix printer, a temperature control unit is implemented in the print head, and the print control unit monitors the detected temperature and prevents the print head from exceeding a predetermined temperature. In such cases, means are activated to reduce the temperature. Methods for lowering the temperature include a method of always printing in one direction (for example, from left to right), a method of temporarily interrupting the printing operation, and a method of performing forced air cooling using a fan.

〔発明が解決しようとする線層〕[Line layer that the invention attempts to solve]

上述した従来のドツトマトリックスプリンタにおいて、
通常印字ヘッド1個に対する温度センサは1〜2個実装
されている。また、印字ヘッド内のドツト駆動部分(印
字ピン)の数は9〜24であシ、各々発熱体となる。こ
のため1〜2個の温度センナによる監視では、発熱体の
実際の温度と温度センサによる検出温度とに誤差が発生
する。
In the conventional dot matrix printer mentioned above,
Usually, one or two temperature sensors are mounted for one print head. Further, the number of dot driving parts (print pins) in the print head is between 9 and 24, each of which serves as a heat generating element. Therefore, when monitoring using one or two temperature sensors, an error occurs between the actual temperature of the heating element and the temperature detected by the temperature sensor.

かかる温度誤差は発熱体と温度センサとの間の熱伝導の
良否により異なるが、印字ピン数の多いプリンタはど誤
差は大きくなり、無視できなくなる。すなわち、この結
果、印字ヘッドの温度が高くなりすぎてプリンタを危険
な状態にするという欠点がある。
This temperature error varies depending on the quality of heat conduction between the heating element and the temperature sensor, but printers with a large number of printing pins have large errors that cannot be ignored. As a result, the temperature of the print head becomes too high, putting the printer in a dangerous condition.

一方、この温度誤差を考慮して、印字ヘッドの温度低下
手段を実行させる温度を低目に設定する方法も考えられ
るが、この場合は実際に印字ヘッドの温度が大して高く
もないのに温度低下手段が作動し、処理速度を低下させ
るという欠点がある。
On the other hand, it is possible to consider this temperature error and set the temperature at which the print head temperature reduction means is executed to a low value, but in this case, the temperature decreases even though the print head temperature is not very high. The disadvantage is that the method operates and slows down the processing speed.

本発明の目的は、かかる印字ヘッドの温度を適切に制御
することのできるドツトマトリックスプリンタの制御方
式を提供することにある。
An object of the present invention is to provide a control system for a dot matrix printer that can appropriately control the temperature of such a print head.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のドツトマトリックスプリンタの制御方式は、複
数個の印字ピンを用いて印字を行なうドツトマトリック
スプリンタの制御方式において、前記複数個の印字ピン
のそれぞれに対してそれぞれ駆動している時間および駆
動していない時間に応じて充放電を行なう複数個の充放
電回路を具備し、前記充放電回路の出力電圧に応じて印
字ヘッドの温度を制御するように構成される。
A control method for a dot matrix printer according to the present invention is a control method for a dot matrix printer that performs printing using a plurality of printing pins, and the driving time and driving time for each of the plurality of printing pins is determined. The printer is equipped with a plurality of charging/discharging circuits that perform charging/discharging depending on the time when the printer is not in use, and is configured to control the temperature of the print head according to the output voltage of the charging/discharging circuits.

〔尖施例〕[Tip example]

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を説明するためのプリンタの
制御回路のブロック図である。
FIG. 1 is a block diagram of a printer control circuit for explaining one embodiment of the present invention.

第1図に示すように、本実施例は印字ピンが24個の場
合について示しておシ、印字データ出力部1から印字ヘ
ッドの各印字ピンを駆動する印字ピン駆動データD1〜
D24 を発生する。印字タイミング発生手段2は印字
タイミング信号Tを発生し、印字ピン駆動データD1〜
D24と共に放放電回路ブロック3へ送出される。また
、充放電回路ブロック3は24個の充放電回路部101
〜124よりなり、各々の回路構成は同一である。更に
、4は印字制御部であシ、各充放電回路部101〜12
4の出力結果から印字ヘッドの温度低下手段を実行させ
るか否かを総合的に判断する。
As shown in FIG. 1, this embodiment shows a case where there are 24 printing pins. Printing pin drive data D1 to 24 drive each printing pin of the printing head from the printing data output unit 1.
Generates D24. The print timing generating means 2 generates a print timing signal T, and prints the print pin drive data D1 to
It is sent to the discharge/discharge circuit block 3 together with D24. In addition, the charging/discharging circuit block 3 includes 24 charging/discharging circuit sections 101.
124, each having the same circuit configuration. Furthermore, 4 is a printing control section, and each charging/discharging circuit section 101 to 12
Based on the output result of step 4, it is comprehensively determined whether or not to execute the print head temperature lowering means.

第2図は第1図に示す充放電回路部の具体的回路図であ
る。
FIG. 2 is a specific circuit diagram of the charging/discharging circuit section shown in FIG. 1.

第2図に示すように、各充放電回路部は印字ピン駆動デ
ータD1〜D24  と印字タイミング信号Tの論理を
とるANDゲート11を有し、このANDゲート11の
出力は該当する印字ピンを駆動する時、論理″1”Kな
り、それ以外の時は論理10″になる。また、12は抵
抗RとコンデンサCを有し充放電を行うRC充放電ユニ
ットであり、論理″′1#のときは放電される。更に、
13は電圧比較器であり、RC充放電ユニット12の出
力を(→端子に接続し且つ基準電圧Vcを(→端子に接
続する。このとき、RC充放電ユニット12の出力が基
準電圧Vc よりも低い場合は、論理″′O”高い場合
は論理11#となる出力が得られる。かかる充放電回路
部により、印字ピンの駆動回数の頻度が設定値を越えて
いるか否かを判定することが可能となる。
As shown in FIG. 2, each charge/discharge circuit section has an AND gate 11 that takes the logic of print pin drive data D1 to D24 and print timing signal T, and the output of this AND gate 11 drives the corresponding print pin. When the logic is ``1'', the logic is ``K'', and otherwise the logic is ``10''. In addition, 12 is an RC charging/discharging unit that has a resistor R and a capacitor C and performs charging and discharging, and the logic ``1'' is the logic ``1''. When it is discharged. Furthermore,
13 is a voltage comparator, which connects the output of the RC charge/discharge unit 12 to the (→ terminal) and connects the reference voltage Vc to the (→ terminal. At this time, the output of the RC charge/discharge unit 12 is lower than the reference voltage Vc. When it is low, the output is logic ``'O'' and when it is high, it is output as logic 11#.With this charging/discharging circuit section, it is possible to determine whether the frequency of driving the printing pin exceeds the set value. It becomes possible.

〔発明の効果〕〔Effect of the invention〕

以上発明した様に、本発明のドツトマトリックスプリン
タの制御方式は、各駆動コイルの温度状態を充放電回路
に再現することによシ、実際の温度を予想しながら制御
することが可能となるため、印字ヘッドの温度を適切に
制御できるという効果がある。
As invented above, the control method of the dot matrix printer of the present invention enables control while predicting the actual temperature by reproducing the temperature state of each drive coil in the charging/discharging circuit. This has the effect of appropriately controlling the temperature of the print head.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例を説明するためのプリンタの
制御回路のブロック図、第2図は第1図に示す充放電回
路部の具体的回路図である。 1・・・・・・データ出力部、2・・・・・・印字タイ
ミング発生手段、3・・・・・・充放電回路ブロック、
4・・・・・・印字制御部、101〜124・・・・・
・充放電回路部、11・・・・・・ANDゲート、12
・・・・・・RC充放電ユニット、13・・・・・・電
圧比較器。
FIG. 1 is a block diagram of a control circuit of a printer for explaining one embodiment of the present invention, and FIG. 2 is a specific circuit diagram of the charging/discharging circuit section shown in FIG. 1. 1...Data output section, 2...Print timing generation means, 3...Charging/discharging circuit block,
4...Print control section, 101-124...
・Charge/discharge circuit section, 11...AND gate, 12
...RC charging/discharging unit, 13...Voltage comparator.

Claims (1)

【特許請求の範囲】[Claims] 複数個の印字ピンを用いて印字を行なうドットマトリッ
クスプリンタの制御方式において、前記複数個の印字ピ
ンのそれぞれに対してそれぞれ駆動している時間および
駆動していない時間に応じて充放電を行なう複数個の充
放電回路を具備し、前記充放電回路の出力電圧に応じて
印字ヘッドの温度を制御することを特徴とするドットマ
トリックスプリンタの制御方式。
In a control method for a dot matrix printer that performs printing using a plurality of printing pins, a plurality of dot matrix printers charge and discharge each of the plurality of printing pins according to the time when each of the plurality of printing pins is driven and the time when it is not driven. 1. A control method for a dot matrix printer, comprising: a charge/discharge circuit; and a temperature of a print head is controlled according to an output voltage of the charge/discharge circuit.
JP1167539A 1989-06-28 1989-06-28 Control apparatus of dot matrix printer Pending JPH0330955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1167539A JPH0330955A (en) 1989-06-28 1989-06-28 Control apparatus of dot matrix printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1167539A JPH0330955A (en) 1989-06-28 1989-06-28 Control apparatus of dot matrix printer

Publications (1)

Publication Number Publication Date
JPH0330955A true JPH0330955A (en) 1991-02-08

Family

ID=15851577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1167539A Pending JPH0330955A (en) 1989-06-28 1989-06-28 Control apparatus of dot matrix printer

Country Status (1)

Country Link
JP (1) JPH0330955A (en)

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