JPS61222759A - Dot printer head - Google Patents

Dot printer head

Info

Publication number
JPS61222759A
JPS61222759A JP6485685A JP6485685A JPS61222759A JP S61222759 A JPS61222759 A JP S61222759A JP 6485685 A JP6485685 A JP 6485685A JP 6485685 A JP6485685 A JP 6485685A JP S61222759 A JPS61222759 A JP S61222759A
Authority
JP
Japan
Prior art keywords
iron piece
electromagnet
movable iron
stopping
piece
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
JP6485685A
Other languages
Japanese (ja)
Inventor
Yoshihiro Torisawa
鳥澤　良広
Takafumi Fukushima
孝文 福島
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric Co Ltd
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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP6485685A priority Critical patent/JPS61222759A/en
Publication of JPS61222759A publication Critical patent/JPS61222759A/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
    • B41J2/275—Actuators for print wires of clapper type

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To permit high-speed printing to be performed by providing an electromagnet by which to restore a mobile iron piece to the original position and then stop it, separately from an electromagnet to drive the mobile iron piece. CONSTITUTION:When a mobile iron piece 7 with a projected needle 8 is restored by the force of a spring 10 by displacement, stop current is supplied to the coil 15 of an electromagnet 13 for stopping. The piece 7 is attracted by the magnet 13 and then by a core 14. Therefore, the bounding of the piece 7 by collision with the electromagnet 13 is avoided. Since the time until it is stopped is short, the drive current can be quickly supplied, and the printing speed can thus be hastened.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、たとえばニードル等の印字素子を駆動するこ
とにより記録媒体にドツトを形成し、このドツトの集合
で文字や図形などを印字するドツトプリンタヘッドに関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dot printer head that forms dots on a recording medium by driving a printing element such as a needle, and prints characters, figures, etc. with a collection of these dots. It is something.

従来の技術 従来、印字素子としてニードルを使用する形式のものに
おいて、そのニードルを記録紙に衝突させてドツトを形
成するインパクト方式のもめとニードルの先端にインク
を保持させて記録紙に近接させ静電力または電磁力でイ
ンクを飛翔させるノンインパクト方式のものがある。い
ずれの方式のものも、駆動後に復帰したニードルはスト
ッパーまたはダンパーにより原位置停止するように配慮
されている。この従来のドツトプリンタヘッドの一例を
第３図に基づいて説明する。Conventional technology Conventionally, in printers that use a needle as a printing element, there is an impact method in which the needle collides with the recording paper to form a dot, and an impact method in which the needle is held in the tip of the needle and brought close to the recording paper to remain static. There is a non-impact type that uses electric or electromagnetic force to propel the ink. In either system, the needle returned to its original position after being driven is stopped by a stopper or damper. An example of this conventional dot printer head will be explained based on FIG.

まず、ハウジング１内にはコア２とコイル３とよりなる
駆動用電磁石４が設けられている。この駆動用電磁石４
の前記コア２と一体のヨーク５の端部には支点６が形成
されている。この支点６に一部を接合させて前記コア２
に対向する可動鉄片７が回動自在に設けられ、この可動
鉄片７の先端には印字素子としてのニードル８が取り付
けられている。このニードル８は前記ハウジング１のノ
ーズ９からその先端を突出させている。また、前記可動
鉄片７は圧縮ばね１ｏにより前記コア２と離反する方向
に付勢されている。この可動鉄片７ノ背面はダンパー１
１に当接されて静止時の原位置が定められている。さら
に、前記可動鉄片７の前記支点６側の背面は、押えばね
１２によりその浮き上がりが防止されている。First, a driving electromagnet 4 consisting of a core 2 and a coil 3 is provided within the housing 1 . This driving electromagnet 4
A fulcrum 6 is formed at the end of the yoke 5 which is integral with the core 2. A portion of the core 2 is joined to this fulcrum 6.
A movable iron piece 7 facing the is rotatably provided, and a needle 8 as a printing element is attached to the tip of the movable iron piece 7. The needle 8 has its tip protruding from the nose 9 of the housing 1. Further, the movable iron piece 7 is urged in a direction away from the core 2 by a compression spring 1o. The back of this movable iron piece 7 is damper 1
1, and its original position at rest is determined. Further, the back surface of the movable iron piece 7 on the fulcrum 6 side is prevented from lifting up by a pressing spring 12.

しかして、駆動用電磁石４のコイル３には印字信号に一
致した駆動電流Ａが通電されるが、この通電時に可動鉄
片７はコア２に吸引され、ニードル８を突出させる。こ
れにより、その印字方式に応じてニードル８が記録紙に
衝突するか近接するかしてドツトを形成する。そして、
突出後には圧縮ばね１０の力によりニードル８および可
動鉄片７は復帰するが、ダンパー１１に衝突して原位置
に停止する。Thus, the coil 3 of the drive electromagnet 4 is energized with a drive current A that matches the print signal, and when this current is energized, the movable iron piece 7 is attracted to the core 2, causing the needle 8 to protrude. As a result, the needle 8 either collides with the recording paper or comes close to it, forming a dot depending on the printing method. and,
After protruding, the needle 8 and the movable iron piece 7 return to their original positions due to the force of the compression spring 10, but they collide with the damper 11 and are stopped at their original positions.

発明が解決しようとする問題点 第４図に示すように、駆動用電磁石４のコイル３に駆動
電流Ａが通電されると可動鉄片７は移動してニードル８
を駆動するが、復帰時にその復帰速度が大きいためにダ
ンパー１１に衝突する衝撃が大きく、その反動として反
発力も大きいことから圧縮ばね１０の押圧力に抗してバ
ウンドする。Problems to be Solved by the Invention As shown in FIG.
However, at the time of return, the return speed is high, so the impact colliding with the damper 11 is large, and as a reaction, the repulsive force is also large, so it bounces against the pressing force of the compression spring 10.

このバウンドは複数回繰り返され、順次減衰して静止す
る。したがって、可動鉄片７が完全に停止するまでは次
の駆動電流Ａを与えることができず、高速印字を行なう
ことができないものである。This bouncing is repeated multiple times, and it gradually decays and comes to rest. Therefore, the next drive current A cannot be applied until the movable iron piece 7 has completely stopped, making it impossible to perform high-speed printing.

問題点を解決するための手段 可動鉄片を駆動する駆動用電磁石とは別にその可動鉄片
を動作前の原位置に復帰させて停止させる停止用電磁石
を設ける。Means for Solving the Problems Separate from the driving electromagnet for driving the movable iron piece, a stopping electromagnet is provided for returning the movable iron piece to its original position before operation and stopping it.

作用 可動鉄片の復帰時に停止用電磁石に通電することにより
その可動鉄片は停止用電磁石の吸引力で吸引されてバウ
ンドのない状態で停止する。そのため、静止するまでの
時間が短くて次の駆動電流の通電を早く行なうことがで
き、これにより、高速印字が行なわれる。By energizing the stopping electromagnet when the working movable iron piece returns, the movable iron piece is attracted by the attractive force of the stopping electromagnet and stops without bouncing. Therefore, the time required for the printer to come to rest is short, and the next drive current can be applied quickly, resulting in high-speed printing.

実施例 本発明の一実施例を第１図および第２図に基づいて説明
する。前述の第３図について説明した部分と同一部分は
同一符号を用い説明も省略する。Embodiment An embodiment of the present invention will be described based on FIGS. 1 and 2. Components that are the same as those described in connection with FIG. 3 above are designated by the same reference numerals, and explanations thereof will be omitted.

本実施例は、前述のダンパー１１が設けられていた位置
に停止用電磁石１３を設けたものである。In this embodiment, a stopping electromagnet 13 is provided at the position where the damper 11 described above was provided.

この停止用電磁石１３はコア１４とコイル１５とよりな
る。This stopping electromagnet 13 consists of a core 14 and a coil 15.

このような構成において、駆動用電磁石４に駆動電流Ａ
を通電すると可動鉄片７が駆動用電磁石４に吸引されて
変位し、ニードル８を突出させる点は前述の第３図に示
したものと同様である。このようにして変位した可動鉄
片７は圧縮ばね１０の力で復帰するが、この復帰時に停
止用電磁石１３のコイル１５に停止電流Ｂが通電される
。この停止電流Ｂで発生した磁束は可動鉄片７を吸引し
てその可動鉄片７をコア１４に吸着させる。そのため、
可動鉄片７が停止用電磁石１３に衝突してバウンドする
ことがない。このような動作を行なわせる停止電流Ｂの
通電タイミングは、可動鉄片７が停止用電磁石１３のコ
ア１４に近接した状態で通電が開始されることが望まし
い、これにより、停止用電磁石１３の磁束が可動鉄片７
の復帰速度を加速することが少なく、かつ、コア１４に
衝突または近接してからのバウンド発生を有効に防止す
る。In such a configuration, a drive current A is applied to the drive electromagnet 4.
When energized, the movable iron piece 7 is attracted by the drive electromagnet 4 and displaced, causing the needle 8 to protrude, similar to that shown in FIG. 3 above. The movable iron piece 7 thus displaced is returned to its original position by the force of the compression spring 10, but at the time of this return, a stopping current B is applied to the coil 15 of the stopping electromagnet 13. The magnetic flux generated by this stop current B attracts the movable iron piece 7 and causes the movable iron piece 7 to be attracted to the core 14. Therefore,
The movable iron piece 7 does not collide with the stopping electromagnet 13 and bounce. It is desirable that the energization timing of the stop current B to perform such an operation is such that the energization is started when the movable iron piece 7 is close to the core 14 of the stop electromagnet 13. As a result, the magnetic flux of the stop electromagnet 13 is reduced. Movable iron piece 7
This reduces the acceleration of the return speed of the core 14, and effectively prevents the occurrence of bouncing after colliding with or approaching the core 14.

このようにして可動鉄片７の動作が繰り返して行われる
が、可動鉄片７が始動してから完全に静止するまでの時
間は短くなり、駆動電流Ａを通電する間隔が短くてよい
ことになる。したがって、高速印字が可能になる。Although the operation of the movable iron piece 7 is performed repeatedly in this manner, the time from when the movable iron piece 7 is started until it comes to a complete standstill is shortened, and the interval at which the drive current A is applied can be shortened. Therefore, high-speed printing becomes possible.

発明の効果 本発明は、上述のように可動鉄片を駆動する駆動用電磁
石の他に可動鉄片を動作前の原位置に復帰させて停止さ
せる停止用電磁石を設けたので。Effects of the Invention The present invention includes, in addition to the driving electromagnet that drives the movable iron piece as described above, a stopping electromagnet that returns the movable iron piece to its original position before operation and stops it.

この停止用電磁石が可動鉄片を吸引することによりその
可動鉄片の復帰時に発生する可動鉄片のバウンドを確実
に防止することができ、これにより、可動鉄片の始動か
ら完全に静止するまでの時間が短くなり、高速印字を行
うことができるものである。By attracting the movable iron piece, this stopping electromagnet can reliably prevent the movable iron piece from bouncing, which occurs when the movable iron piece returns.This shortens the time from when the movable iron piece starts to when it comes to a complete standstill. This enables high-speed printing.

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

第１図は本発明の一実施例を示す縦断側面図、第２図（
ａ）　（ｂ）　（ｃ）は駆動電流と停止電流と可動鉄片
の変位とのタイミングを示す波形図、第３図は従来の一
例を示す縦断側面図、第４図（ａ）　（ｂ）は駆動電流
と可動鉄片とのタイミングを示す波形図である。 ４・・・駆動用電磁石、７・・・可動鉄片、８・・・ニ
ードル（印字素子）、１３・・・停止用電磁石出　願　
人　　　東京電気株式会社 ３」　国 、７３２剛Fig. 1 is a longitudinal cross-sectional side view showing one embodiment of the present invention, Fig. 2 (
a) (b) (c) are waveform diagrams showing the timing of the drive current, stop current, and displacement of the movable iron piece, Fig. 3 is a longitudinal cross-sectional side view showing an example of the conventional example, and Fig. 4 (a) and (b) are FIG. 3 is a waveform diagram showing the timing of the drive current and the movable iron piece. 4...Driving electromagnet, 7...Movable iron piece, 8...Needle (printing element), 13...Stopping electromagnet Application
People Tokyo Electric Co., Ltd. 3” Country, 732 Tsuyoshi

Claims (1)

【特許請求の範囲】[Claims] 印字素子を保持した可動鉄片を駆動する駆動用電磁石を
設け、この駆動用電磁石に印字信号に一致した駆動電流
を通電することにより前記印字素子を記録媒体に向けて
移動させるようにしたものにおいて、前記可動鉄片を動
作前の原位置に復帰させて停止させる停止用電磁石を設
けたことを特徴とするドットプリンタヘッド。A driving electromagnet for driving a movable iron piece holding a printing element is provided, and the printing element is moved toward a recording medium by applying a driving current that matches a printing signal to the driving electromagnet, A dot printer head characterized in that a stop electromagnet is provided for returning the movable iron piece to its original position before operation and stopping the movable iron piece.
JP6485685A 1985-03-28 1985-03-28 Dot printer head Pending JPS61222759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6485685A JPS61222759A (en) 1985-03-28 1985-03-28 Dot printer head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6485685A JPS61222759A (en) 1985-03-28 1985-03-28 Dot printer head

Publications (1)

Publication Number Publication Date
JPS61222759A true JPS61222759A (en) 1986-10-03

Family

ID=13270242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6485685A Pending JPS61222759A (en) 1985-03-28 1985-03-28 Dot printer head

Country Status (1)

Country Link
JP (1) JPS61222759A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024543A (en) * 1988-05-25 1991-06-18 Seiko Epson Corporation Impact dot print head
US5039235A (en) * 1988-10-18 1991-08-13 Seiko Epson Corporation Printer utilizing improved impact dot print head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5024543A (en) * 1988-05-25 1991-06-18 Seiko Epson Corporation Impact dot print head
US5039235A (en) * 1988-10-18 1991-08-13 Seiko Epson Corporation Printer utilizing improved impact dot print head

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