JPS62161549A - Wire dot driving apparatus of printer - Google Patents

Wire dot driving apparatus of printer

Info

Publication number
JPS62161549A
JPS62161549A JP447786A JP447786A JPS62161549A JP S62161549 A JPS62161549 A JP S62161549A JP 447786 A JP447786 A JP 447786A JP 447786 A JP447786 A JP 447786A JP S62161549 A JPS62161549 A JP S62161549A
Authority
JP
Japan
Prior art keywords
power source
constant voltage
diode
voltage power
coil
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
JP447786A
Other languages
Japanese (ja)
Inventor
Yoshikiyo Futagawa
二川　良清
Akio Mitsuishi
明生 三石
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP447786A priority Critical patent/JPS62161549A/en
Publication of JPS62161549A publication Critical patent/JPS62161549A/en
Pending legal-status Critical Current

Links

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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/27—Actuators for print wires
    • B41J2/28—Actuators for print wires of spring charge type, i.e. with mechanical power under electro-magnetic control

Landscapes

  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE:To obtain the wire dot driving apparatus of a printer reduced in energy consumed as heat, by a method wherein a means for controlling the opening and closing of the output terminal of a constant voltage power source is provided and a diode is further provided to both output terminals and the cathode common terminal of the diode provided to a coil is connected to the input terminal of a constant voltage power source circuit. CONSTITUTION:The connection of the resistor 26 of a constant voltage power source 21 is changed over to provide a terminal 266 and the output of the constant voltage power source 21 is opened and closed through said terminal 26b. Further, a diode 36 is provided to both terminals of the output of the power source 21 and the cathode of a diode 33 is connected to the input terminal of the power source. By this constitution, almost all of the energy supplied by the power source 21 is participated in the operation of a movable iron piece. Further, because a condenser 31 repeats perfect charging and discharging, said condenser 31 is made small to a degree securing the stability of the power source 21 and energy due to charging and discharging is made min. By this method, the highly effective wire dot driving apparatus of a printer, wherein the constant voltage power source is also controlled to form the loop of a current due to the electromagnetic energy accumulated in a coil by the proper arrangement of the diode and power source efficiency is enhanced without wasteful consumption of heat, is obtained.

Description

【発明の詳細な説明】 （産業上の利用分野］ 本発明は文字、図形をドツトでプリント表現するワイヤ
ドツトプリンタのワイヤドツトを付勢制御する駆動装置
の回路構成に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a circuit configuration of a drive device for controlling the energization of wire dots in a wire dot printer that prints characters and figures using dots.

（従来の技術〕 従来の技術のワイヤドツトの回路構成を第４図、第５図
、第６図で説明する。第４図はワイヤドツトプリンタの
簡単な構造を示す図である。１はプランジャで、継鉄２
−、コイル８、可動鉄片４、及び復帰バネ５よ構成る。(Prior Art) The circuit configuration of a conventional wire dot printer will be explained with reference to Figs. 4, 5, and 6. Fig. 4 is a diagram showing a simple structure of a wire dot printer. 1 is a plunger; Yoke 2
-, a coil 8, a movable iron piece 4, and a return spring 5.

６はワイヤで可動鉄片４と亘接又は衝突係合している。A wire 6 is in contact with or collidingly engaged with the movable iron piece 4.

７はワイヤのガイドである０図示してないがこの様な電
磁装置を基本として７ワイヤ、２４ワイヤでシリアルプ
リンタを構成するのが一般である。８はインクリボン、
１０は記録紙、９はプラテンである。この様な構成で電
磁装置の複数のコイルを励磁する回路を示すのが第６図
である。7 is a wire guide 0 Although not shown in the drawings, a serial printer is generally constructed with 7 wires or 24 wires based on such an electromagnetic device. 8 is an ink ribbon,
10 is a recording paper, and 9 is a platen. FIG. 6 shows a circuit for exciting a plurality of coils of an electromagnetic device with such a configuration.

Ｊは整流回路、２１は定電圧電源であシ、２１Ｇは入力
端子、２１ｂは出力端子を表す。J is a rectifier circuit, 21 is a constant voltage power supply, 21G is an input terminal, and 21b is an output terminal.

４は主トランジスタで、低抗５とＩを介してトランジス
タ乙によってペース電流が制御される。4 is a main transistor, and the pace current is controlled by transistor B via low resistor 5 and I.

址抗２６４寸トランジスｉη冬４市’ｆ手λす甫Ｆ霜片
である。トランジスタムは出力電圧がゼーナダイオード
あの閾値を超えると通電して抵抗あの電流を吸収してト
ランジスタ田を遮断方向にして主トランジスタｎも遮断
方向に出力電圧を降下させて定電圧電源を構成するので
ある。抵抗あはゼーナダイオードの過電流防止用で、抵
抗四はバイアス抵抗でゼーナダイオードあの小さいリー
ク電流でトランジスタムが作動するのを防止する。コン
デンサー艶と３１は平滑用である。It is a 264-inch transistor with a resistance of 264 inches. When the output voltage exceeds the threshold of the zener diode, the transistor conducts electricity, absorbs the current of the resistor, turns the transistor field in the blocking direction, and the main transistor N also drops the output voltage in the blocking direction, forming a constant voltage power supply. It is. Resistor A is for overcurrent prevention of the Zener diode, and resistor No. 4 is a bias resistor that prevents the transistor from operating due to the small leakage current of the Zener diode. Condenser gloss and 31 are for smoothing.

印字データが端子３２Ｇに印加されるとトランジスタ３
２は通電してコイル８に所定の電流を流す。When print data is applied to the terminal 32G, the transistor 3
2 is energized to cause a predetermined current to flow through the coil 8.

複数のダイオードおはカソード側で共通に接続さｎゼー
ナ、ダイオードあを通過して電源の出力端子２１６に接
続される。第５図で（皿と表したものはトランジスタ３
２が通電して定電圧電源２１からコイル８にａｎ込む電
流である。イ、はトランジスタ３２の遮断時に貯られた
コイル８の電磁エネルギーによる電流を表す。The plurality of diodes are connected in common on the cathode side, and the diode A is connected to the output terminal 216 of the power supply. In Figure 5 (the plate is the transistor 3
2 is a current that flows into the coil 8 from the constant voltage power supply 21. A represents the current due to the electromagnetic energy of the coil 8 stored when the transistor 32 is turned off.

ここで、第６図でトランジスタ翌の通電、遮断ニヨルコ
イル８のエネルギーの出入関係を説明する。Ｃａ）はト
ランジスタ３２の通電時間巾τ、（ｂ）はコレクタ電圧
の変化をゼーナダイオードのゼーナ電圧”ｌｙ”ｌによ
る相違を示す。Ｅは電源４の電圧、Ｐはトランジスタ昭
の遮断時を、Ｑｌ　とｑ、はコイルに貯られた電磁エネ
ルギーが消える時点を示す。（（＋）はコイルに流ｎる
電流を示す、（ｄ）は電源２１がプランジャ１に供給し
たエネルギーの関係を示す図である。８曲線が電源２１
が供給したエネルギー、Ｓはコイル８のインダクタンス
をり、電流を（とす牡ば＋Ｌ４重とするコイル８の電磁
エネルギーである。ではトランジスタ３２が遮断後、電
熱エネルギー５＝４−ｘｒ４、のコイル８が消費したエ
ネルギーである。Ｅｌ−Ｔはゼーナダイオードが消費す
るエネルギーである。Now, with reference to FIG. 6, the relationship between the input and output of energy in the energization and interruption of the transistor coil 8 will be explained. Ca) is the conduction time width τ of the transistor 32, and (b) shows the difference in collector voltage change due to the zener voltage "ly"l of the zener diode. E is the voltage of the power supply 4, P is the time when the transistor A is cut off, and Ql and q are the times when the electromagnetic energy stored in the coil disappears. ((+) indicates the current flowing through the coil, (d) is a diagram showing the relationship between the energy supplied to the plunger 1 by the power source 21.
The energy supplied by S is the electromagnetic energy of the coil 8, which multiplies the inductance of the coil 8 and the current by multiplying by 8 is the energy consumed.El-T is the energy consumed by the zener diode.

従って、コイル８が可動鉄片を作動させる関与するエネ
ルギーは２時点０Ｒ−８とでとなる。Therefore, the energy involved by the coil 8 to actuate the moving iron is at two times 0R-8.

コ・ｒル３に貯えられた電磁エネルギーの量の割合は大
きく無駄にゼーナダイオードが消費するのである。A large proportion of the electromagnetic energy stored in the coil 3 is wasted by the zener diode.

次に第６図に示す関係を更に詳細に説明する。Next, the relationship shown in FIG. 6 will be explained in more detail.

こ＼で、コイル８の抵抗をデ、インダクタンスは可動鉄
片４の移動により変化するのでおるが一定のＬとする。Here, the resistance of the coil 8 is set to L, and the inductance changes as the movable iron piece 4 moves, but is constant L.

トランジスタ３２が通電中のコイル１；これが第６（Ｏ
）図の（、である。Coil 1 with transistor 32 energized; this is the sixth (O
) of the figure (, is.

にこｔ以後の電流（雪を求める。ゼーナダイオド具のゼ
ーナ電圧Ｖ、とすれば、 。これより第６（６ン図のＱ、、Ｑ、はｉ、　第０同様
に、 これから、ｖｚが高い８　Ｂ　＝　’ｒ　Ｌ　ｉ♂の電
磁エネルギーは早く消滅する。この早い消滅はワイヤの
作動上必要である。The current after Niko t (calculate the snow. If the zener voltage of the zener diode device is V, then . From this, the 6th (Q in the 6th diagram is i, and similarly to the 0th, from now on, vz is higher. 8 B = 'r The electromagnetic energy of L i♂ dissipates quickly. This fast dissipation is necessary for the operation of the wire.

第０になる時間ｉ慮は次の様に近似さ扛る。The 0th time i can be approximated as follows.

この時間１．で、ゼーナダイオドが消費するエネルギー
Ｉ’ｍは、 ７　ｇ５　。This time 1. So, the energy I'm consumed by the Zena diode is 7 g5.

−−）　ｄ　ｔ デ ｓ６ １＋□ ｍ となる。即ち、を皿を短くすると１３＝＝−）Ｌ４゜冨
のエネルギーは全てゼーナダイオードで消費することに
なる。本発明はとのゼーナダイオードの無駄消費を有効
にオリ用しようとするものである。--) d t des6 1+□ m. That is, if the plate is shortened, all the energy of 13==-)L4° will be consumed by the Zener diode. The present invention attempts to effectively utilize the wasteful consumption of Zener diodes.

（発明が解決しようとする問題点） 上記した従来技術では、プランジャ１のコイル８に蓄積
さｎたエネルギーは割合として大きな値であるが、ゼー
ナダイオードの熱消費になるという問題点を有する。そ
こで本発明はこの様な問題点を解決せんとするものであ
る。(Problems to be Solved by the Invention) The above-described conventional technology has a problem in that the energy accumulated in the coil 8 of the plunger 1 is relatively large, but results in heat consumption of the Zener diode. Therefore, the present invention aims to solve such problems.

本発明の目的とするところは、熱として消費するエネル
ギーを小さくしたプリンタのワイヤドツト駆動装置を提
供するところにある。An object of the present invention is to provide a wire dot drive device for a printer that consumes less energy as heat.

ｃ問題点を解決するための手段〕 本発明のワイヤドツト駆動装置は、定電圧電源の出力を
開閉制御する手段を設け、更に出力両端子にはダイオー
ドを設ける。コイルに付設した、ダイオードのカソード
共通端子は定電圧電源回路の入力端に接続して、コイル
に蓄積されたエネルギーを帰すようにするのである。Means for Solving Problem c] The wire dot driving device of the present invention is provided with means for controlling the opening and closing of the output of the constant voltage power supply, and further provided with diodes at both output terminals. The cathode common terminal of the diode attached to the coil is connected to the input terminal of the constant voltage power supply circuit to return the energy stored in the coil.

又は、スイッチング素子の速断よりミ源回路の遮断を早
くして、所定時間蓄積さした電磁エネルギーを可動鉄片
の作動に関与させる様にコイルに持続電流を流し、更に
残つ良電磁エネルギーは電源回路の入力側に帰す如くす
るのである。Alternatively, the power supply circuit can be cut off more quickly than the switching element, and a sustained current is passed through the coil so that the electromagnetic energy accumulated for a predetermined time is involved in the operation of the movable iron piece, and the remaining good electromagnetic energy is used in the power supply circuit. In other words, it is returned to the input side of .

即ち、本発明のワイヤドツトを用いたプリンタのワイヤ
ドツト駆動装置は、プリンタのワイヤドツトの駆動製雪
に於て、出力の開閉を制御する制御端子を有し出力両端
がダイオードで接続されている定電圧電源回路、この定
電圧電源回路の出力の一増に前記ワイヤドツトを付勢す
る共通端子を接続した複数個のコイル、こｎらのコイル
の他端には個別に印字データで制御され共通端子は前記
定電圧電源回路の他端に接続されるスイッチング素子、
及びこれらのスイッチング素子の接続点を分離接続し次
前記定電圧電源回路の入力端に電流を帰すダイオードよ
り構成して電源使用効率を高めたものである。That is, the wire dot driving device for a printer using the wire dot of the present invention is a constant voltage power supply having a control terminal for controlling opening/closing of the output and having both output ends connected with a diode in snow making for driving the wire dot of the printer. circuit, a plurality of coils connected to a common terminal that energizes the wire dots to the output of this constant voltage power supply circuit, the other ends of these coils are individually controlled by printed data, and the common terminal is A switching element connected to the other end of the constant voltage power supply circuit,
The power supply efficiency is improved by separately connecting the connection points of these switching elements and diodes which then return current to the input terminal of the constant voltage power supply circuit.

（作用］ このようにすることによｉ１従来枝術では、ゼーナダイ
オードのみでコイルの流れる電流を閉じていたが、定電
圧電源の出力端にダイオード、コイルの側端に接続した
ダイオードから定電圧電源の入力端に帰す電流ループを
構成したことによりコイルのインダクタンスの電流の連
続性から電源の入力端にエネルギーを押込むのである。(Function) By doing this, in the i1 conventional branch technique, the current flowing through the coil was closed only by the zener diode, but the current flowing through the coil is closed using only the zener diode, but the current flowing through the coil is closed by the diode at the output end of the constant voltage power supply, and the By constructing a current loop that returns to the input end of the voltage power supply, energy is pushed into the input end of the power supply from the continuity of the current in the inductance of the coil.

〔実施例〕〔Example〕

第１図は本発明の詳細な説明を簡略化する為、コイル８
を１個で示した具体的構成図である。In order to simplify the detailed explanation of the present invention, FIG.
FIG. 2 is a specific configuration diagram showing one unit.

第５図の定電圧電源２１の抵抗部を接続替して端子２６
　ｂを設けて、こｔにより定電圧電源２１の出力を開閉
するのである。By changing the connection of the resistor part of the constant voltage power supply 21 shown in Fig. 5, the terminal 26
b is provided, and this opens and closes the output of the constant voltage power supply 21.

更に電源２１の出力両端にダイオードあを設けるのであ
る。又、第５図のゼーナダイオードを取って、ダイオー
ド３３のカソードをｖＬ＠　２１の入力端に構成する。Furthermore, a diode is provided at both ends of the output of the power supply 21. Also, the Zener diode shown in FIG. 5 is taken and the cathode of the diode 33 is configured at the input terminal of vL@21.

こ＼で、第２０でトランジスタ３２と電源２１が同時に
導通、非導通にする場合について、第１図の動作を説明
する。（α）が導通正量であシ、（ｂ〕がトランジスタ
３２のコレクタ電圧波形、（Ｃ）が［流で、（−が導通
正量でコイル８に流れる電流、（藝は非導通区間のダイ
オードあ、コイル８、ダイオードお、電源２１のループ
に流ｒｔ７：Ｉ電流である。（ｄ）はエネルギー関係を
示す図で、Ｒ１が電源２１が供給したエネルギーである
。Ｓ、はコイル８の電磁エネルギー、斜線で示したＴ、
はとの電磁エネルギーをコイル８が消費したエネルギー
である。第１図の電Ｒｔｅは後述の理由によ〕第５図の
（８よ電流ｎる時間が長いので％Ｑ＋１時点を合せて比
較する為に、導通区間１区をτより短くシ穴。この様に
すると、ワイヤの付勢に関係するコイル３の消費エネル
ギーはＲ，−８，とＴ１となシ、残シの冗にエネルギー
は電源２１の入力端にりすのである。The operation shown in FIG. 1 will now be described for the case where the transistor 32 and the power supply 21 are made conductive and non-conductive at the same time in the twentieth step. (α) is the positive amount of conduction, (b) is the collector voltage waveform of the transistor 32, (C) is the current, (- is the positive amount of conduction and the current flowing through the coil 8, The current rt7:I flows through the loop of the diode A, coil 8, diode O, and the power source 21.(d) is a diagram showing the energy relationship, where R1 is the energy supplied by the power source 21.S is the energy of the coil 8. Electromagnetic energy, T shown with diagonal lines,
This is the energy that the coil 8 consumes from the electromagnetic energy of the dove. The electric current Rte in Fig. 1 is longer than that shown in Fig. 5 (8) due to the reason explained later], so in order to compare the current at %Q+1, the conduction section 1 is made shorter than τ. In this case, the energy consumption of the coil 3 related to the energization of the wire is R, -8, and T1, and the remaining energy is sent to the input terminal of the power source 21.

従って、本発明は従来技術では熱として消費したものを
可動活用する特徴がある。Therefore, the present invention has the feature of movably utilizing what was consumed as heat in the prior art.

ここで、（６の数分方程式を解く。ダイオードのドロッ
プを無視して、電源２１の入出力電圧Ｅとるから、ｔ、
Ｑ、＜ｔ、　　となる。Here, solve the fractional equation of (6).Ignore the drop of the diode and take the input/output voltage E of the power supply 21, so t,
Q, <t.

コイル８の抵抗ｒが消費したエネルギーＥＴはＣｄ）図
である。The energy ET consumed by the resistance r of the coil 8 is shown in Cd).

次に第８図で、′ｗＬ源２１とトランジスタ３２の通電
時間を変えた場合を説明する。１８時間は同時で、１８
時間はトランジスタ３２のみが通電、τ盛時間は両方非
通電の電流の流れである。こｔらを示すのが第８（α）
＃　（ｉ　、（＃）である。電流（、と（蓼は第２図で
示した形態と同じである。Next, referring to FIG. 8, a case will be described in which the energization time of the 'wL source 21 and the transistor 32 is changed. 18 hours at the same time, 18
During the time period, only the transistor 32 is energized, and during the τ period, current flows when both transistors are not energized. This is shown in the 8th (α)
# (i, (#). The currents (, and () are the same as the form shown in FIG. 2.

１３時間の電流（番はダイオードあ、コイル８、トラン
ジスタ諺からのループに流れる電流であるである。13 hours of current (the number is the current flowing in the loop from diode A, coil 8, transistor proverb).

ｔ＝ｏ　、　ｉ４　＝τ。、１＝■、ｉ番＝０より（番
＝イ、１″″鷲となる。この電流（番の減衰は１！流（
１の豆上が９と同じ率である。コイル３で示す。τ６区
間では第２図の（、と同じ形態のｔ＊が流れる。１番は
コイルが消費したエネルギーである。従って、コイル８
は１２時間に蓄えたエネルギーを所定の時間内に消費す
る。わずか残ったエネルギーは電源２１の入力端に帰す
のである従って、電源２１が供給したエネルギーはほと
んど可動鉄片の作動に関与するのである。t=o, i4=τ. , 1 = ■, i number = 0 (number = i, 1""). This current (attenuation of number is 1! current (
The ratio of 1 is the same as 9. Shown as coil 3. In the τ6 section, t* having the same form as (, in Fig. 2) flows. No. 1 is the energy consumed by the coil. Therefore, the coil 8
consumes the energy stored over 12 hours within a given time. The little remaining energy is returned to the input end of the power source 21, so that most of the energy supplied by the power source 21 is involved in the operation of the movable iron piece.

尚、記述が遅ｎたがコンデンサー３１は本発明では完全
充放電を繰返すので、電源２１の安定性を確保する程度
の小さいものにして、充放電によるエネルギーを最小に
する。Although the description is slow, the capacitor 31 is completely charged and discharged repeatedly in the present invention, so the capacitor 31 is made small enough to ensure the stability of the power supply 21, and the energy due to charging and discharging is minimized.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明によｎば、定電圧電源も制御し
てコイルに蓄積されｆｃ電磁エネルギーによる電流を適
切なダイオード配置によってループを形成して無駄に熱
消費することなく電源効率を高めた効果大のプリンタの
ワイヤドツト駆動装置が得られるのでちる。As described above, according to the present invention, the constant voltage power supply is also controlled and the current generated by the fc electromagnetic energy accumulated in the coil is formed into a loop by appropriate diode arrangement, thereby increasing the power efficiency without wasting heat. This makes it possible to obtain a highly effective printer wire dot drive device.

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

第１図は本発明の実施例を示す図、第２図は第１図の動
作例を示す図、第８図は第１図の他の動作例を示す図で
ある。 ＠４図は本発明に係るプリンタの電磁機構の簡単例を示
す図である。第５図は従来技術のプリンタのワイヤドツ
ト駆動装置を示す図であシ、第６図は第５図の動作例を
示す図。 １０．ワイヤを付勢するプランジャ ８０．プランジャのコイル ２１、、定電圧電源 ３２、、トランジスタ ３３　、３１３　、　、ダイオード 翼ｇ　３５　ｅ　ｅゼーナダイオード 以上。 ３ブシンソ讐ｎプｆＪし （山） 第５図 第６図1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the operation of FIG. 1, and FIG. 8 is a diagram showing another example of the operation of FIG. 1. @4 Figure is a diagram showing a simple example of the electromagnetic mechanism of the printer according to the present invention. FIG. 5 is a diagram showing a wire dot driving device of a conventional printer, and FIG. 6 is a diagram showing an example of the operation of FIG. 5. 10. Plunger 80 for energizing the wire. Plunger coil 21, constant voltage power supply 32, transistors 33, 313, diode wings g 35 ee Zener diode or higher. Figure 5 Figure 6

Claims (1)

【特許請求の範囲】[Claims] プリンタのワイヤドットの駆動装置に於て、出力の開閉
を制御する制御端子を有し出力両端がダイオードで接続
されている定電圧電源回路、この定電圧電源回路の出力
の一端に前記ワイヤドットを付勢する共通端子を接続し
た複数個のコイル、これらのコイルの他端には個別に印
字データで制御され共通端子は前記定電圧電源回路の他
端に接続されるスイッチング素子、及びこれらのスイッ
チング素子の接続点を分離接続した前記定電圧電源回路
の入力端に電流を帰すダイオードより構成したことを特
徴とするプリンタのワイヤドット駆動装置。In the wire dot drive device of a printer, a constant voltage power supply circuit has a control terminal for controlling opening and closing of the output and both output ends are connected with diodes, and the wire dot is connected to one end of the output of this constant voltage power supply circuit. A plurality of coils connected to a common terminal to be energized, a switching element that is individually controlled by printed data at the other end of these coils, and whose common terminal is connected to the other end of the constant voltage power supply circuit, and a switching element for these coils. 1. A wire dot drive device for a printer, comprising a diode that returns current to an input terminal of the constant voltage power supply circuit in which connection points of elements are connected separately.
JP447786A 1986-01-13 1986-01-13 Wire dot driving apparatus of printer Pending JPS62161549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP447786A JPS62161549A (en) 1986-01-13 1986-01-13 Wire dot driving apparatus of printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP447786A JPS62161549A (en) 1986-01-13 1986-01-13 Wire dot driving apparatus of printer

Publications (1)

Publication Number Publication Date
JPS62161549A true JPS62161549A (en) 1987-07-17

Family

ID=11585188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP447786A Pending JPS62161549A (en) 1986-01-13 1986-01-13 Wire dot driving apparatus of printer

Country Status (1)

Country Link
JP (1) JPS62161549A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0373870A2 (en) * 1988-12-13 1990-06-20 Seiko Epson Corporation Dot wire driving apparatus
EP0380352A2 (en) * 1989-01-27 1990-08-01 Seiko Epson Corporation Circuit for activating print head of wire printer
JPH04357049A (en) * 1990-08-21 1992-12-10 Seiko Epson Corp Printing wire driving apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0373870A2 (en) * 1988-12-13 1990-06-20 Seiko Epson Corporation Dot wire driving apparatus
US5149214A (en) * 1988-12-13 1992-09-22 Seiko Epson Corporation Print wire driving apparatus
EP0380352A2 (en) * 1989-01-27 1990-08-01 Seiko Epson Corporation Circuit for activating print head of wire printer
US5099383A (en) * 1989-01-27 1992-03-24 Seiko Epson Corporation Print head activating circuit for a wire dot printer
JPH04357049A (en) * 1990-08-21 1992-12-10 Seiko Epson Corp Printing wire driving apparatus

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