JPS604068A - Dot printer - Google Patents

Dot printer

Info

Publication number
JPS604068A
JPS604068A JP18954183A JP18954183A JPS604068A JP S604068 A JPS604068 A JP S604068A JP 18954183 A JP18954183 A JP 18954183A JP 18954183 A JP18954183 A JP 18954183A JP S604068 A JPS604068 A JP S604068A
Authority
JP
Japan
Prior art keywords
needle
magnetic
ink
magnetic ink
recording paper
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
JP18954183A
Other languages
Japanese (ja)
Inventor
Tsutomu Kimura
勤 木村
Takeyoshi Tsuge
柘植 武義
Yoshihiro Torisawa
鳥澤 良広
Ayumi Makino
牧野 歩
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.)
Tokyo Sanyo Electric Co Ltd
Toshiba TEC Corp
Original Assignee
Tokyo Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd, Tokyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP18954183A priority Critical patent/JPS604068A/en
Publication of JPS604068A publication Critical patent/JPS604068A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22Typewriters 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
    • B41J2/23Typewriters 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
    • B41J2/305Ink supply apparatus

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To lessen printing noise and further to make smooth sliding of needle possible, by a method wherein the magnetic ink caught with the top of needle is attached to recording paper and further the needle guide is made to be in contact with magnetic ink. CONSTITUTION:When electric power is applied to magnetic ink suction coil 16, the magnetic ink 24 of ink tank 20 is sucked by the magnetic flux generated between magnetic poles 19 and the film of magnetic ink is formed along slit 18. Then, the top of needle 9 is wetted with magnetic ink 24. by flight of needle 9 against recording paper 34 by excitation of electromagnet 7, the magnetic ink at the top of needle 9 becomes in contact with recording paper 34 and dot is formed. In that case, when the top of needle 9 slightly touches the recording paper 34, dot is formed and noise is very low without impact sound. Because there is a clearance between the needle guide 14 and the magnetic pole 19, the magnetic ink 24 between the magnetic poles 19 does never come in contact with the needle guide 14. Therefore, the needle 9 can be always smoothly slided.

Description

【発明の詳細な説明】 発明の技術分野 この発明は、ドツトプリンタに関するものでおる。[Detailed description of the invention] Technical field of invention This invention relates to a dot printer.

発明の技術的背景及びその問題点 従来のドツトプリンタは、プラテンに沿う感圧紙にニー
ドルをインパクトさせ、あるいは普通紙にインキリボン
t−介してインパクトさせるもので、いずれにしてもニ
ードルとプラテンとの衝突により騒音が大きし。
Technical background of the invention and its problems In conventional dot printers, a needle impacts pressure-sensitive paper along a platen, or impacts plain paper through an ink ribbon, and in either case, collision between the needle and the platen occurs. The noise is louder.

このようなことからプラテンの前面に磁極を対向さ誓、
これらの磁極間にインキタンク内の磁性インキ層を貫通
するニードルを記録紙に接触させる方式が考えられてい
る。具体的な構成としては特開昭56−95682号公
報に記載されたものが存する。
For this reason, it is recommended that the magnetic poles be opposed to the front of the platen.
A method has been considered in which a needle that penetrates the magnetic ink layer in the ink tank is brought into contact with the recording paper between these magnetic poles. A specific configuration is described in Japanese Patent Application Laid-Open No. 56-95682.

このものは、ニードルt−整列させてスライド自在に保
持するニードルガイドにおいて磁性インキを保持するた
め、ニードルガイ7、);に形成したガイド用の孔とニ
ードルとの隙間に磁性インキが常に浸入する。孔とニー
ドルとのクリアランスは目的上きわめて小さく、使用後
はその小さな隙間に浸入した磁性インキが乾燥して固形
化するため、再使用においてニードルが動かなくなる欠
点を有して−る。
In this case, since the magnetic ink is held in the needle guide which aligns the needles and holds them slidably, the magnetic ink always enters the gap between the guide hole formed in the needle guide 7) and the needle. . The clearance between the hole and the needle is extremely small for the intended purpose, and after use, the magnetic ink that has entered the small gap dries and solidifies, resulting in the disadvantage that the needle does not move when reused.

発明の目的 この発明はこのような点に鑑みなされたもので、印字騒
音を小さく、シかも、ニードルをスムーズにスライドさ
せうるドツトプリンタをうろことを目的とするものであ
る。
OBJECT OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide a dot printer that can reduce printing noise and allow the needle to slide smoothly.

発明の概要 この発明は、インキ保持部によシ膜状に保持された磁性
インキにニードルを貫通させ、ニードルの先端で捕捉し
た磁性インキを記録紙に付着し、したがって、記録紙に
対するニードルの印字圧を大幅に低下して印字騒音金低
くするようにし、また、ニードルガイドに磁性インキが
触れないようにし、したがって、ニードルガイドに磁性
インキが付着して固形化することがなく、ニードルを常
にスムーズにスライドさせうるように構成したものであ
る。
SUMMARY OF THE INVENTION This invention allows a needle to penetrate magnetic ink held in a film form by an ink holding section, and the magnetic ink captured at the tip of the needle is attached to recording paper, thereby preventing the needle from printing on the recording paper. The pressure is significantly reduced to reduce printing noise, and the magnetic ink does not come into contact with the needle guide. Therefore, the magnetic ink does not stick to the needle guide and solidify, and the needle is always moved smoothly. It is designed so that it can be slid.

発明の実施例 この発明の一実施例を図面に基いて説明する。Examples of the invention An embodiment of the present invention will be described based on the drawings.

(1)は筐体で、この筐体11Jには印字ヘッド(2)
を搭載したキャリア(3)がキャリアシャフト(4)と
ガイドシャフト(5)とに保持されてスライド自在に設
けられている。筐体tlJの上面には一部しか図示しな
いがカバー(6)が設けられている。印字ヘッド(2)
は複数の電磁石(7)ヲ環状に配列して収納したマグネ
ットケース(8)と複数のニードル(9)を保持したガ
イドフV−ムu01とよりなる。各′電磁石(刀のアマ
チュアUυはニードル(9)に当接してニードルスプリ
ング俣りにより復帰方向に付勢されストッパ時に圧接さ
れている。ガイドフV−ムt101にはニードル(9)
t″整列せるニードルガイドu41151が固定され、
このガイドフレーム住Qの両側には磁性インキ吸引コイ
ル(1119の両極に結合された磁性板aηが固定され
、これらの磁性板t1′?)の先端にはスリット賭金間
して対向するインキ保持部である磁極(LIが連続して
形成され、スリン) t181からニードル(9)の先
熾が突出している。
(1) is a housing, and this housing 11J has a print head (2).
A carrier (3) carrying the is slidably held by a carrier shaft (4) and a guide shaft (5). A cover (6) is provided on the top surface of the housing tlJ, although only a portion thereof is shown. Print head (2)
consists of a magnet case (8) containing a plurality of electromagnets (7) arranged in a ring shape and a guide frame u01 holding a plurality of needles (9). Each 'electromagnet (armature Uυ of the sword comes into contact with the needle (9) and is urged in the return direction by the needle spring arm and is pressed into contact with the stopper. The needle (9) is attached to the guide frame V-m t101.
Needle guide u41151 to align t'' is fixed,
Magnetic plates aη coupled to both poles of the magnetic ink suction coil (1119) are fixed on both sides of the guide frame Q, and ink holding coils facing each other are placed at the tips of these magnetic plates t1'? The tip of the needle (9) protrudes from the magnetic pole (LI is formed continuously, Surin) t181.

磁極1間のギャップは上部に向うにつれ次第に小さくな
るようにテーパー状に形成されている。また、磁極(1
鎌はニードルガイドIに対して所定の間隔をあけて前方
に位置されている。
The gap between the magnetic poles 1 is formed in a tapered shape so that it becomes gradually smaller toward the top. In addition, the magnetic pole (1
The sickle is positioned in front of the needle guide I at a predetermined distance.

さらに、印字ヘッド(2)には偏平のインキタンク四と
カートリッジリ〃とが着脱自在に取付けられている。イ
ンキタンク四の上面には磁極−の下端を挿入するスリッ
ト状の小孔四と中央に位置する通孔(ハ)とが連続して
形成され、また、磁性インキ(241qを補給する開口
(ハ)が形成されている。インキタンク四の下面には磁
極−の下端と対向する永久磁石(至)が固定されている
。そして、カートリッジ圓の下面には開口−1“に嵌合
されるmanが形成され、この筒t2ηの下端には内部
の磁性インキn″f:排出する開口ullJが形成され
、筒(2つの内部には密着時に開口t2alt−閉止す
る栓(29)がスプリング夏により下方へ付勢されて上
下動自在に嵌合されている。また、この栓シ9)の下面
には棒u〃が突出形成され、外周には複数の切欠い4が
形成さ牡ている。これらの切欠国の底を結ぶ円の半径は
開ロリ〜の半径よりも大きくしてるる。
Further, a flat ink tank 4 and a cartridge cartridge are detachably attached to the print head (2). On the top surface of the ink tank 4, a slit-like small hole 4 into which the lower end of the magnetic pole is inserted and a through hole (c) located in the center are continuously formed, and an opening (c) for replenishing the magnetic ink (241q) is formed in succession. ) is formed on the lower surface of the ink tank 4. A permanent magnet (to) facing the lower end of the magnetic pole is fixed on the lower surface of the ink tank 4. A permanent magnet (to) facing the lower end of the magnetic pole 4 is fixed on the lower surface of the cartridge circle. An opening ullJ is formed at the lower end of this cylinder t2η to discharge the internal magnetic ink n″f, and a plug (29) that closes the opening t2alt when the two cylinders are brought into close contact with each other is opened downward by a spring spring. A rod U is formed protruding from the lower surface of the stopper 9), and a plurality of notches 4 are formed on the outer periphery. The radius of the circle connecting the bottoms of the notched countries is larger than the radius of the open loli.

さらに、印字ヘッド(2)の前面には紙送りローラ曽に
より送られる記録紙1.t41が永久磁石−に支えられ
て設けられている。
Further, in front of the print head (2), there is a recording paper 1. t41 is supported by a permanent magnet.

このような構成において、磁性インキ吸引コイルueに
通電すると、磁性μ坤間に生ずる磁束によりインキタン
ク四の磁性インキ(至)が吸引されてスリットu81に
沿って磁性インキ膜が形成され、ニードル(9)の先端
部が磁性インキ124Jで濡れる。したがって、特定し
た゛電磁石(7)全励磁しニードル(9)を記録紙−に
向けて飛ばすことによりニードル(9)先端の磁性イン
キ(至)が記録紙(至)に接触してドラ)’lI−形成
する。この場合、ニードル(9)の先端が記録紙(至)
に軽くタッチすればドツトが形成されるので従来のよう
な衝突音はなく騒音はきわめて低い。本実施例によれば
ニードル(9)の先端が記録紙(至)に接近するとニー
ドル(9)′先端の磁性インキ+241に永久磁石61
が吸引するので、ニードル(9)のストロークを記録紙
(至)に接触させない小さなストロークに設定して印字
騒音をさらに小さくすることも可能である。
In such a configuration, when the magnetic ink attraction coil ue is energized, the magnetic ink (to) in the ink tank 4 is attracted by the magnetic flux generated between the magnetic inks, a magnetic ink film is formed along the slit u81, and the needle ( The tip of 9) is wetted with magnetic ink 124J. Therefore, by fully energizing the specified electromagnet (7) and flying the needle (9) toward the recording paper, the magnetic ink at the tip of the needle (9) comes into contact with the recording paper (drag). lI-form. In this case, the tip of the needle (9) is toward the recording paper.
If you lightly touch it, a dot is formed, so there is no collision sound like in the past, and the noise is extremely low. According to this embodiment, when the tip of the needle (9) approaches the recording paper (to), the permanent magnet 61 is applied to the magnetic ink +241 at the tip of the needle (9)'.
It is also possible to further reduce printing noise by setting the stroke of the needle (9) to a small stroke that does not bring it into contact with the recording paper (to).

また、磁性インキ吸引コイル四の磁力は一定であり、イ
ンキタンク囚の磁性インキ(241は消費量に応じてカ
ートリッジI2υから補給されるので一定のレベルに維
持され、したがって、スリット賭における磁性インキ膜
のレベルも一定で上部のニードル(9)に磁性インキ(
至)が達しないような事態は全くない。
In addition, the magnetic force of the magnetic ink suction coil 4 is constant, and the magnetic ink (241) in the ink tank is replenished from the cartridge I2υ according to the consumption amount, so it is maintained at a constant level, and therefore the magnetic ink film in the slit The level of the magnetic ink (
There is no situation in which the above is not reached.

さらに、磁極1間のギャップに下部が広く上部に向うに
つれ(インキタンク(至)から遠くなるにつれ)次第に
狭くなるように設定したことにより、第6図に示すよう
にギャップが小さい上部はど磁場の強さが強い。したが
って、磁性インキレ勾の消費量に応じて最上部のニード
ル(9)にも磁性インキe勾をインキタンク四から速や
かに供給することができ、印字パターンの上部だけが印
字濃度が薄くなることはない。
Furthermore, by setting the gap between magnetic poles 1 to be wide at the bottom and gradually narrow toward the top (as it gets farther from the ink tank), as shown in Figure 6, the gap at the top where the gap is small is reduced by the magnetic field. The strength of is strong. Therefore, the magnetic ink e-gradient can be quickly supplied from the ink tank 4 to the uppermost needle (9) according to the consumption amount of the magnetic ink gradient, and the print density will not be reduced only in the upper part of the print pattern. do not have.

印字終了に際しては磁性インキ吸引コイルα6)への通
電を切る。このときに、磁性インキt241は表面張力
によタスリツ) t181に溜まり易いが、永久磁石四
の磁力によって速やかにインキタンク四に回収される。
At the end of printing, the power to the magnetic ink attraction coil α6) is turned off. At this time, the magnetic ink t241 tends to accumulate in the ink tank t181 due to surface tension, but is quickly collected in the ink tank 4 by the magnetic force of the permanent magnet 4.

このようにして印字が行なわれるが、ニードルガイドI
と磁極Illとの間には間隔がおいているため磁極u9
間の磁性インキ(至)がニードルガイドIに触れること
はない。したがって、ニードルガイド側に形成された孔
とニードル(9)とのクリアランスは0.01〜0.0
3mm指であるが、この小さな隙間に磁性インキc勺が
浸入して乾燥し固形化するようなことはない。したがっ
て、ニードル(9) ’e 常にスムーズにスライドさ
せることができる。
Printing is performed in this way, but the needle guide I
Since there is a gap between the magnetic pole Ill and the magnetic pole U9
The magnetic ink in between never touches the needle guide I. Therefore, the clearance between the hole formed on the needle guide side and the needle (9) is 0.01 to 0.0.
Although it is a 3mm finger, there is no possibility that the magnetic ink will penetrate into this small gap and dry and solidify. Therefore, the needle (9) can always be slid smoothly.

発明の効果 この発明は上述のように構成したので、記録紙に対する
ニードルの印字圧力を弱めて印字騒音をきわめて小さく
することができ、また、ニードルガイドに磁性インキが
付着して固形化することを防止することができ、したが
って、ニードルを常にスムーズにスライドさせることが
できる等の効果を有するものである。
Effects of the Invention Since the present invention is configured as described above, it is possible to weaken the printing pressure of the needle against the recording paper, thereby making printing noise extremely small, and also to prevent magnetic ink from adhering to the needle guide and solidifying. Therefore, it has the effect that the needle can always slide smoothly.

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

図面はこの発明の一実施例を示すもので、第1図は縮小
し一部を切欠して全体の構at示す斜視図、第2図は平
面崗、第3図は縦断側面図、第4図は分解斜視図、第5
図は一部を切欠し拡大した正面図、第6図は磁場の強さ
と磁極間のギャップとの関係を示すグラフである。 9・・・ニードル、14・・・ニードルガイド、19・
・・磁極(インキ保持部)、24・・・磁性インキ、3
4・・・記録紙出 願 人 東京電気株式会社 1 −第Z口
The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the entire structure with a reduced size and a part cut away, Fig. 2 is a plan view, Fig. 3 is a longitudinal side view, and Fig. 4 is a perspective view showing the overall structure. The figure is an exploded perspective view, No. 5
The figure is a partially cutaway and enlarged front view, and FIG. 6 is a graph showing the relationship between the strength of the magnetic field and the gap between the magnetic poles. 9... Needle, 14... Needle guide, 19.
...Magnetic pole (ink holding part), 24...Magnetic ink, 3
4...Record paper applicant: Tokyo Electric Co., Ltd. 1-Exit Z

Claims (1)

【特許請求の範囲】[Claims] 磁性イン中を膜状に保持するインキ保持部を設け、この
インキ保持部に保持された前記磁性インキを捕捉して記
録紙に印字する複数のニードルを設け、これらのニード
ルをスライド自在に保持するニードルガイドを前記イン
キ保持部の近傍に前記磁性インキに触れないように間隔
t−Sけて対向させて設けたことを特徴とするドツトプ
リンタ。
An ink holding part that holds the magnetic ink in a film form is provided, a plurality of needles are provided for capturing the magnetic ink held in the ink holding part and printing on recording paper, and these needles are held slidably. A dot printer characterized in that a needle guide is provided in the vicinity of the ink retaining portion and facing the needle guide at an interval t-S so as not to touch the magnetic ink.
JP18954183A 1983-10-11 1983-10-11 Dot printer Pending JPS604068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18954183A JPS604068A (en) 1983-10-11 1983-10-11 Dot printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18954183A JPS604068A (en) 1983-10-11 1983-10-11 Dot printer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11224283A Division JPS604075A (en) 1983-06-22 1983-06-22 Dot printer

Publications (1)

Publication Number Publication Date
JPS604068A true JPS604068A (en) 1985-01-10

Family

ID=16243032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18954183A Pending JPS604068A (en) 1983-10-11 1983-10-11 Dot printer

Country Status (1)

Country Link
JP (1) JPS604068A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63123499U (en) * 1987-02-02 1988-08-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63123499U (en) * 1987-02-02 1988-08-11
JPH055190Y2 (en) * 1987-02-02 1993-02-10

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