JPS5872473A - Printer - Google Patents

Abstract

PURPOSE:To prevent the delay of the release of a printing hammer as well as raise the quality of print without causing any heating problems, etc., and without the need for complicated control by a method in which printing is made by driving a printing hammer for only odd-number figure or evennumber figure. CONSTITUTION:When exciting a solenoid coil 4, the attractive force of a permanent magnet 1 is counterveiled, and by the restoration force of a plate spring 5, a printing pin 6 is collided against a platen through a printing paper and an ink ribbon and the printing paper is printed. Whereupon, the solenoid coil 4 is wound around an even-number figure pole 30 but not around an odd-number figure pole 30, and also the printing pin 6 is provided only to an even-number figure plate spring 5. Thus, even when more than given number of solenoid coils 4 are excited, since magnetic flux flowing in the pole 30 can flow into the adjacent odd-number figure pole 30, the magnetic attractive force of the figure pole ready for releasing is not increased, and thereby the delay of the release does not occur and the letter aligning characteristics does not fall.

Description

【発明の詳細な説明】 本発明は、弾性支持板に支持きれ、該弾性支持板が弾性
変形した後退位置で永久磁石による吸引力によりポール
に吸着保持きれる印字ハノマを印字位置に沿って往復移
動させ、この往復移動時に前記印字ハノマを釈放して印
字する印字装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for reciprocating a printing hanoma that can be fully supported by an elastic support plate and held on a pole by the attraction force of a permanent magnet at a retracted position where the elastic support plate is elastically deformed along the printing position. The present invention relates to a printing device that prints by releasing the printing panel during this reciprocating movement.

かかる印字装置として、例えば特開昭５１−４０２２１
号公報に開示されている如く、前記印字ハノマをドツト
を印字する印字ピンとしたドツトマトリクスプリッタが
あるが、以下ドットマトリクスプリンタを例にとって説
明する。As such a printing device, for example, Japanese Patent Application Laid-Open No. 51-40221
As disclosed in the above publication, there is a dot matrix splitter in which the printing panel is a printing pin for printing dots, and the explanation will be given below by taking a dot matrix printer as an example.

ドツトマトリクスプリンタの印字ハンマ駆動装置は、第
１図に示す如く、本発明印字ハンマを構成する印字ピン
６及び磁性材からプランジャ７をその前面に装着した本
発明弾性支持板を構成する板バネ５、永久磁石１、フロ
ントヨーク２、リアヨーク３及び該リアヨーク３の上方
脚部すなわちボール部３０に巻回された釈放用電磁コイ
ル４等から構成される。前記板バネ５の下端すなわち固
定端はフロント戸−り２を貫通したネジ９を介して永久
磁石１の前面に設けられたスペーサ８に固定される。な
お１０は板バネ５をスペーサ８に固定するネジである。As shown in FIG. 1, the printing hammer drive device of a dot matrix printer includes a printing pin 6 which constitutes the printing hammer of the present invention, and a plate spring 5 which constitutes the elastic support plate of the present invention, on the front of which is attached a plunger 7 made of magnetic material. , a permanent magnet 1, a front yoke 2, a rear yoke 3, and a releasing electromagnetic coil 4 wound around the upper leg or ball portion 30 of the rear yoke 3. The lower end, that is, the fixed end of the leaf spring 5 is fixed to a spacer 8 provided on the front surface of the permanent magnet 1 via a screw 9 passing through the front door door 2. Note that 10 is a screw for fixing the leaf spring 5 to the spacer 8.

また前記フロントヨーク２の上端゛には印字ピン６及び
プランジャ７が通過する溝が設けられている。Further, the upper end of the front yoke 2 is provided with a groove through which the printing pin 6 and the plunger 7 pass.

前記印字ピン６は、板バネ５が弾性変形した後退位置で
前記永久磁石１の磁気吸引力により前記ボール部３０に
保持されている。前記電磁コイル４を励磁すると前記磁
気吸引力は相殺され、板ノくネ５はその復元力により飛
行して油記印字ピン６を図示しない印字用紙及びイック
リボノを介して図示しないプラテンに衝突させる。この
印字用紙上にはドツトが印字される。The printing pin 6 is held by the ball portion 30 by the magnetic attraction force of the permanent magnet 1 at the retreated position where the leaf spring 5 is elastically deformed. When the electromagnetic coil 4 is excited, the magnetic attraction force is canceled out, and the plate nozzle 5 flies due to its restoring force, causing the oil printing pin 6 to collide with a platen (not shown) via a printing paper (not shown) and a quick rib (not shown). Dots are printed on this printing paper.

従って、前記永久磁石１、ヨーク２．５等を印字位置に
沿って延ばすと共に印字ピノ６を支持した板バネ５を印
字位置に沿って複数個差べて設け、これら構成要素を収
容した図示しないハンマバンクを介して印字位１１に沿
って往復移動させると共に前記印字用紙を１ドツト行ず
つステップ送りさせ、前記往復移動時に前記電磁コイル
を励磁させて印字ピン６を釈放することにより１行印字
が可能となる。すなわち、１個の印字ピ／６が印字する
桁数に対応する距離だけ前記ハンマバンクが往復移動さ
せられる。Therefore, the permanent magnet 1, yoke 2.5, etc. are extended along the printing position, and a plurality of leaf springs 5 supporting the printing pins 6 are provided at different intervals along the printing position to accommodate these components (not shown). The printing paper is moved reciprocatingly along the printing position 11 via a hammer bank, and the printing paper is fed step by step one dot line at a time, and during the reciprocating movement, the electromagnetic coil is energized and the printing pin 6 is released, thereby printing one line. It becomes possible. That is, the hammer bank is reciprocated by a distance corresponding to the number of digits printed by one printing pin/6.

上記構成のドツトプリンタにおいてつき゛のような問題
があった。すなわち、所定数以上の電磁コイル４が励磁
されて印字ビ／６が釈放きれる場合、印字ピン６の釈放
が遅れ字並び特性が低下するといつ間１題がある。どの
現象は特開昭５６−５６８８５号公報にも開示されてお
り、電磁コイル４の励磁時間を大きくすることにより前
記釈放が遅れないようにしているものがあるが、制御が
複雑になると共に電磁コイル４の発熱が大きくなるとい
う新たな問題がある。The dot printer with the above configuration always had the following problems. That is, when more than a predetermined number of electromagnetic coils 4 are excited and the printing pins 6 are completely released, there is a problem that the release of the printing pins 6 is delayed and the character arrangement characteristics deteriorate. This phenomenon is also disclosed in Japanese Unexamined Patent Publication No. 56-56885, and there is a method in which the excitation time of the electromagnetic coil 4 is increased to prevent the release from being delayed, but the control becomes complicated and the electromagnetic There is a new problem that the heat generation of the coil 4 increases.

また両隣りの印字ピン６が釈放された後所定時間遅れて
中央の印字ピン６を釈放しようとする場合、その釈放が
遅れ上記同様字並び特性が低下する。Further, if the central printing pin 6 is released after a predetermined time delay after the printing pins 6 on both sides have been released, the release is delayed and the character arrangement characteristics deteriorate as described above.

この現象は、両隣りのボール部ろ０に流れていた磁束が
中央のボール部５０に流れ込み中央の磁気吸引力が犬き
くなって電磁コイル４の励磁による相殺が遅れるためと
考えられる。この場合も上記同様電磁コイル４の励磁時
間を大きくすることにより釈放が遅れないようにするこ
とが可能であるが、上記と同様な問題が生ずる。This phenomenon is thought to be because the magnetic flux flowing through the adjacent ball portions 0 flows into the center ball portion 50, making the magnetic attraction force at the center stronger and canceling out by the excitation of the electromagnetic coil 4 delayed. In this case as well, it is possible to prevent the release from being delayed by increasing the excitation time of the electromagnetic coil 4 as described above, but the same problem as described above occurs.

本発明の目的は、上記した従来技術の欠点をなくシ、印
字品質の低下を防止することである、本発明は奇数桁の
みあるいは偶数桁のみの印字ハンマを駆動して印字する
ことにより、所定数以上の印字ハンマが駆動される際の
印字ノ・ツマの釈放の遅れ、あるいは中央の印字ノ・／
マの釈放の遅れを防止することを特徴としたものである
。An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to prevent deterioration in print quality. Delay in releasing the printing knob when more than one printing hammer is driven, or the central printing knob/
This system is characterized by preventing delays in the release of prisoners.

第２図は本発明の一実施例を示すもので、前記電磁コイ
ル４は偶数桁のボール部５０に巻回され、奇数桁のボー
ル部３０Ｋｌ’ｊ：巻回準れない。また該奇数桁のボー
ル部５０に吸着保持される板ノくネ５には印字ピノ６が
設けられない。すなわち、偶数桁の板バネ５にのみ印字
ピン６が設けられる。FIG. 2 shows an embodiment of the present invention, in which the electromagnetic coil 4 is wound around even-numbered ball portions 50, and the odd-numbered ball portions 30Kl'j are not wound in the same manner. Further, the printing pins 6 are not provided in the plate holes 5 which are sucked and held by the ball portions 50 of the odd-numbered digits. That is, the printing pins 6 are provided only on the leaf springs 5 of even number digits.

この結果、所定数以上の電磁コイル４が励磁されても、
そのボール部５０に流れていた磁束が隣接する奇数桁の
ボール部５θに流れ込むことができるので、釈放しよう
とする桁のボール部５０の磁気吸引力が大きくなること
はなくなり、釈放が遅れることはなくなる。すなわち字
並び特性が低下することはない。また中央の桁の釈放が
遅れることもなくなり字並び特性は低下しない。なお、
この実施例によれば、奇数桁のボール部が熱伝導によっ
て偶数桁で発生した熱を放散するという冷却フィンの作
用もするので、冷却能力が大きくなり高負荷印字が可能
となる。As a result, even if more than a predetermined number of electromagnetic coils 4 are excited,
Since the magnetic flux flowing through the ball portion 50 can flow into the adjacent ball portion 5θ of the odd-numbered digit, the magnetic attraction force of the ball portion 50 of the digit to be released will not increase, and the release will not be delayed. It disappears. In other words, the character arrangement characteristics do not deteriorate. Furthermore, there is no delay in the release of the central digit, and the character arrangement characteristics do not deteriorate. In addition,
According to this embodiment, the ball portions of odd-numbered digits act as cooling fins to dissipate heat generated in even-numbered digits by thermal conduction, so the cooling capacity is increased and high-load printing is possible.

なお、偶数桁のみの印字ピン６を駆動するようにしたが
、奇数桁のみを駆動するようＫしてもよく、また印字ピ
ン６を偶数桁のみに設けるとしたが、全桁に設けてもよ
い（半分は使用されないが）。Although the printing pins 6 are driven only for even-numbered digits, it may be possible to drive only odd-numbered digits, and although the printing pins 6 are provided only for even-numbered digits, they may be provided for all digits. Good (although half of it is never used).

上記実施例においては、機械的構造によって奇数桁のみ
あるいは偶数のみの印字ピン６を駆動して印字するよう
にしたが、電磁コイル４及び印字ピン６を全桁設け、電
気的に奇数桁のみあるいは偶数桁の−みの印字ピン６を
駆動するように制御してもよい。この場合、交互に奇数
桁のみあるいは偶数桁のみの印字ピノ６を駆動すること
も可能であり、印字ピン６等の寿命を長くすることがで
きる。またドツトマトリクスプリンタとして説明したが
、印字ピノ６を通常の印字ハンマとし、活字搬送体上の
活字に衝突させて印字するラインプリンタに適用するこ
とも可能である。In the above embodiment, the printing pins 6 of only odd numbered digits or only even numbered digits are driven and printed by the mechanical structure, but the electromagnetic coil 4 and the printing pins 6 are provided for all digits, and electrically only the odd numbered digits or only the even numbered digits are driven. It may be controlled to drive only the printing pins 6 of even-numbered digits. In this case, it is also possible to alternately drive the printing pins 6 for only odd-numbered digits or only for even-numbered digits, and the life of the printing pins 6 and the like can be extended. Further, although the embodiment has been described as a dot matrix printer, it is also possible to use the printing pin 6 as a normal printing hammer and apply it to a line printer that prints by colliding with the type on the type carrier.

以上のように本発明によれば、複雑な制御を必委とせず
、また新たな発熱等の問題を起すことなく、印字ハンマ
の釈放の遅れを防止することができ、字並び特性等の印
字品質を向上できる。As described above, according to the present invention, it is possible to prevent a delay in the release of the printing hammer without requiring complicated control or causing problems such as new heat generation, and to improve printing characteristics such as character arrangement characteristics. Quality can be improved.

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

図は本発明装置の一実施例であるドットマ）　ＩＪクス
プリンタを示すものであって、第１図は印字ハンマ駆動
装置の一例を示す断面側面図、第２図は一実施例を示す
展開斜視図である。図において、１は永久磁石、２はフ
ロントヨーク、５はリアヨーク、５０はポール部、４は
釈放用電磁コイル、５、・は板バネ（弾性支持板）、６
は印字ピン（印字ハンマ）、７はプランジャ、８Ｆｉス
ペーサ、９゜１０は固定ネジである。The figures show an IJ printer which is an embodiment of the device of the present invention, in which Fig. 1 is a cross-sectional side view showing an example of a printing hammer drive device, and Fig. 2 is an exploded perspective view showing one embodiment. It is a diagram. In the figure, 1 is a permanent magnet, 2 is a front yoke, 5 is a rear yoke, 50 is a pole part, 4 is a release electromagnetic coil, 5, . is a leaf spring (elastic support plate), 6
is a printing pin (printing hammer), 7 is a plunger, 8Fi spacer, 9° and 10 are fixing screws.

Claims (1)

【特許請求の範囲】 １、　印字位置に沿って延びた永久磁石と、印字位置に
沿って並べて設けられた複数のポールを有するヨークと
、弾性支持板に支持され、該弾性支持板が弾性変形した
後退位置で前記ポールに吸着保持される印字／・ツマと
、前記ポールに取り付けられた釈放用電磁コイルと、こ
れら永久磁石、ヨーク、弾性支持片及び印字ノ・ツマ等
を収容したハ／マバノクとを備え、該ノ・ツマパックを
印字位置に沿って往復移動させ、この往復移動中に前記
釈放用電磁コイルを励磁し、弾性支持板を釈放して印字
ノ・ツマにより印字する印字装置であって、 前記印字位置に沿って設けられた複数の印字ハンマのう
ち、奇数桁のみあるいは偶数桁のみの印字ハノマを駆動
して印字することを特徴とした印字装置。 ２、前記釈放用電磁コイルを前記ポールの奇数桁のみあ
るいは偶数桁のみに取り付けたことを特徴とする特許請
求の範囲第１項記載の印字装置。 ろ、前記印字ハノマを前記弾性支持体の奇数桁のみある
いは偶数桁のみに支持させたことを特徴とする特許請求
の範囲第１項記載の印字装置。 ４、前記釈放用電磁コイルを奇数のみあるいは偶数桁の
みを励磁させることを特徴とする特許請求の範囲第１項
記載の印字装置。[Claims] 1. A permanent magnet extending along the printing position, a yoke having a plurality of poles arranged in parallel along the printing position, and supported by an elastic support plate, the elastic support plate being elastically deformed. A printing tab which is attracted and held on the pole in the retracted position, a releasing electromagnetic coil attached to the pole, and a printing tab that accommodates these permanent magnets, a yoke, an elastic support piece, a printing tab, etc. The printing device comprises: a printing device which reciprocates the knob pack along a printing position, excites the releasing electromagnetic coil during this reciprocating movement, releases the elastic support plate, and prints with the printing knob; A printing device characterized in that, among the plurality of printing hammers provided along the printing position, printing is performed by driving printing hammers for only odd numbered digits or only for even numbered digits. 2. The printing device according to claim 1, wherein the release electromagnetic coil is attached only to odd-numbered digits or only to even-numbered digits of the pole. 2. The printing device according to claim 1, wherein the printing panel is supported only by odd-numbered digits or only by even-numbered digits of the elastic support. 4. The printing device according to claim 1, wherein the release electromagnetic coil is excited only for odd number digits or only for even number digits.