JPS6253844A - Printing head - Google Patents
Printing headInfo
- Publication number
- JPS6253844A JPS6253844A JP19352185A JP19352185A JPS6253844A JP S6253844 A JPS6253844 A JP S6253844A JP 19352185 A JP19352185 A JP 19352185A JP 19352185 A JP19352185 A JP 19352185A JP S6253844 A JPS6253844 A JP S6253844A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- armature
- stopper
- wires
- resin sheet
- 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.)
- Granted
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
Description
【発明の詳細な説明】
産業上の利用分野
本発明はインパクトドツトマトリクスプリンターの印字
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 print head for an impact dot matrix printer.
従来の技術
近年、ドツトプリンターの印字ヘッドにコストの安いフ
ラッパー一体型の印字ヘッドが用いられるようになって
きた。2. Description of the Related Art In recent years, inexpensive flapper-integrated print heads have come to be used as print heads for dot printers.
以下に従来の印字ヘッドについて2つの例を挙げて説明
する。Two examples of conventional print heads will be described below.
第3図は従来の印字ヘッドの断面図であり、■はアーマ
チュア、2はアーマチュア1の可動端に溶接固定されて
いる印字ワイヤー、3はアーマチュア1を磁力により吸
引し、印字ワイヤー2に印字動作をさせる電磁石である
。アーマチュア1は電磁石3の外側端を支点として揺動
できる。9は第4図に示す形状の樹脂成型のストッパー
で、アーマチュア1はバネ5により常時ストッパー9側
に圧接されている。6はアーマチュア1を電磁石3の支
点に押し付けている押さえバネ、7は印字ヘッドのカバ
ー、8はストッパー9及び押さえバネ6をカバー7に圧
接する支持部材である。Figure 3 is a cross-sectional view of a conventional print head, where ■ is the armature, 2 is a print wire welded and fixed to the movable end of the armature 1, and 3 is a print wire that attracts the armature 1 by magnetic force and prints on the print wire 2. It is an electromagnet that allows The armature 1 can swing around the outer end of the electromagnet 3 as a fulcrum. Reference numeral 9 denotes a resin-molded stopper having the shape shown in FIG. 4, and the armature 1 is always pressed against the stopper 9 by a spring 5. Reference numeral 6 denotes a presser spring that presses the armature 1 against the fulcrum of the electromagnet 3, 7 a cover for the print head, and 8 a support member that presses the stopper 9 and the presser spring 6 against the cover 7.
以上のように構成された印字ヘッドについて、以下にそ
の動作を説明する。The operation of the print head configured as described above will be described below.
まず初期の状態でバネ5によりストッパー9に圧接され
ていたアーマチュア1は、電磁石3が励磁されることに
より吸引され、電磁石3の外側端を支点として揺動し、
同時にアーマチュア1の可動端に溶接固定された印字ワ
イヤー2が動作し、印字動作を行う。First, the armature 1, which was in pressure contact with the stopper 9 by the spring 5 in the initial state, is attracted by the electromagnet 3 being excited, and swings around the outer end of the electromagnet 3 as a fulcrum.
At the same time, the printing wire 2 fixed by welding to the movable end of the armature 1 operates to perform a printing operation.
次に電磁石3の励磁が終わると、アーマチュア1と印字
ワイヤー2はバネ5によって押し戻され、ストッパー9
に弾接して初期状態に戻る。Next, when the electromagnet 3 is energized, the armature 1 and the printing wire 2 are pushed back by the spring 5, and the stopper 9
It collides with the object and returns to its initial state.
次に第5図は他の従来例の印字ヘッドの断面図である。Next, FIG. 5 is a sectional view of another conventional print head.
1はアーマチュア、2・は印字ワイヤー、3は電磁石、
5はバネ、7はカバー、8は支持部材でこれらは前記の
従来例の構成と同じものであるので前記の従来例と同じ
番号を付し説明を省略する。10は周辺部にOリングの
ガイドを持ち、印字ヘッドの外周で支持される樹脂成型
のストッパー、11はアーマチュア1を電磁石3の外側
端に圧接するOリングである。1 is the armature, 2 is the printing wire, 3 is the electromagnet,
Reference numeral 5 designates a spring, 7 a cover, and 8 a support member, which have the same structure as in the prior art example described above, and therefore are given the same numbers as in the prior art example and their explanations will be omitted. 10 is a resin-molded stopper that has an O-ring guide on its periphery and is supported on the outer periphery of the print head, and 11 is an O-ring that presses the armature 1 into contact with the outer end of the electromagnet 3.
以上の他の従来例の構成の印字ヘッドの動作は前記の従
来例の場合と同様である。The operation of the print head having the configuration of the other conventional example described above is similar to that of the conventional example described above.
発明が解決しようとする問題点
しかしながら、従来の構成ではストッパーが樹脂成型品
であり、成型条件によって寸法性質を左右されるため、
アーマチュアが当接する部分の厚さや弾性が周方向に一
定ではなく、印字品質を低下させるという問題を有して
いた。Problems to be Solved by the Invention However, in the conventional configuration, the stopper is a resin molded product, and its dimensional properties are affected by molding conditions.
There was a problem in that the thickness and elasticity of the portion in contact with the armature were not constant in the circumferential direction, which deteriorated printing quality.
これは、複数個の印字ワイヤーが同時に印字を行うとき
に、ストッパー9の厚さや弾性が周方向で違うと揺動ス
トロークが変わるため、印字用紙への到達時間が均一で
なくなるが、印字ヘッドは印字用紙上を移動しながら印
字を行うため、印字ワイヤーの到達時間のずれがドツト
のずれとなり印字品質を低下させ、また、ストロークが
均一でないと、印字ワイヤーの終速度が変化し、印字圧
にばらつきを生じ、印字品質を低下させるということで
ある。This is because when multiple printing wires print at the same time, if the thickness and elasticity of the stopper 9 differs in the circumferential direction, the swing stroke will change, making the arrival time to the printing paper uneven, but the printing head Since printing is performed while moving on the printing paper, deviations in the arrival time of the printing wire cause the dots to shift, reducing printing quality.In addition, if the stroke is not uniform, the final speed of the printing wire changes, causing the printing pressure to change. This means that variations occur and print quality deteriorates.
問題点を解決するための手段
本発明は、アーマチュアのストッパーに樹脂製シートを
用いた印字装置である。Means for Solving the Problems The present invention is a printing device that uses a resin sheet as a stopper of an armature.
作 用
前記構成によれば、樹脂製シートの平面度が元来良好な
ため揺動ストロークが均一で、印字ワイヤーが印字媒体
に到達する時間が均一になり、また、その際の強さが均
一になる
実施例
第1図は本発明の一実施例における印字ヘッドの断面図
である。1はアーマチュア、2は印字ワイヤー、3は電
磁石、5はバネ、6は押さえバネ、7はカバー、8は支
持部材でこれらは従来例の構成と同じものであり従来例
と同じ番号を付し説明を省略する。4は樹脂製シートの
ストッパーで、第2図に示すように位置決め用の穴が設
けられていて、支持部材8とカバー7に押さえバネ6と
共に固定され、アーマチュア1がバネ5によって圧接さ
れている。Effect According to the above configuration, since the flatness of the resin sheet is originally good, the swinging stroke is uniform, the time for the printing wire to reach the printing medium is uniform, and the strength at that time is uniform. Embodiment FIG. 1 is a sectional view of a print head in an embodiment of the present invention. 1 is an armature, 2 is a printing wire, 3 is an electromagnet, 5 is a spring, 6 is a presser spring, 7 is a cover, and 8 is a support member. These are the same structures as the conventional example, and are given the same numbers as the conventional example. The explanation will be omitted. Reference numeral 4 denotes a stopper made of a resin sheet, which is provided with a hole for positioning as shown in FIG. .
以上のように構成された印字ヘッドについて、以下にそ
の動作を説明する。The operation of the print head configured as described above will be described below.
まず初期の状態でバネ5によりストッパー4に圧接され
ていたアーマチュア1は、電磁石3が励磁されることに
より吸引され、電磁石3の外側端を支点として揺動し、
同時にアーマチュア1の可動端に溶接された印字ワイヤ
ー2が動作し、印字動作を行う。First, the armature 1, which was in pressure contact with the stopper 4 by the spring 5 in the initial state, is attracted by the electromagnet 3 being excited, and swings around the outer end of the electromagnet 3 as a fulcrum.
At the same time, the printing wire 2 welded to the movable end of the armature 1 operates to perform a printing operation.
次に電磁石3の励磁が終わると、アーマチュア1と印字
ワイヤー2はバネ5によって押し戻され、ストッパー9
に弾接して初期状態に戻る。Next, when the electromagnet 3 is energized, the armature 1 and the printing wire 2 are pushed back by the spring 5, and the stopper 9
It collides with the object and returns to its initial state.
ここで、本実施例ではストッパー4に合成樹脂のシート
を用いたため、印字ワイヤーの揺動するストロークが周
方向に均一で、複数個の印字ワイヤーが同時に印字を行
うとき、印字ワイヤーが印字用紙に同時に到達する。こ
のため、到達時間の違いによるドツトのずれが起こらな
い。In this embodiment, since a synthetic resin sheet is used for the stopper 4, the swinging stroke of the printing wire is uniform in the circumferential direction, and when multiple printing wires print simultaneously, the printing wire touches the printing paper. arrive at the same time. Therefore, no dot misalignment occurs due to differences in arrival time.
またストロークが均一なため印字ワイヤーの終速度が等
しく、均一な印字圧で印字する。Also, because the stroke is uniform, the final speed of the printing wire is equal, and printing is performed with uniform printing pressure.
発明の効果
本発明は、ストッパーに樹脂製シートを用いることによ
り、アーマチュアの揺動するストロークを周方向に均一
にし、印字品質を向上することができる優れた印字ヘッ
ドを実現できるものである。Effects of the Invention The present invention uses a resin sheet for the stopper to make the swinging stroke of the armature uniform in the circumferential direction, thereby realizing an excellent print head that can improve print quality.
第1図は本発明の一実施例の印字ヘッドの断面図、第2
図は樹脂製シートのストッパーの平面図、第3図は従来
の印字ヘッドの一例を示す断面図、第4図は成型品の内
側支持のストッパーの平面図、第5図は従来の印字ヘッ
ドの他の例を示す断面図、第6図は成型品の外側支持の
ストッパーの平面図である。
1・・・アーマチュア、2・・・印字ワイヤー、3・・
・電磁石、4・・・樹脂製シートのストッパー、5・・
・バネ、6・・・押さえバネ、7・・・カバー、8・・
・支持部材、9・・・内側支持のストッパー、10・・
・外側支持のストッパー、11・・・Oリング
代理人の氏名ブF理士 中 Mi 男 ほか1名第1
図
第2図
第 3 図
第 4 図
第5図
第6図FIG. 1 is a sectional view of a print head according to an embodiment of the present invention, and FIG.
The figure is a plan view of a resin sheet stopper, Figure 3 is a sectional view showing an example of a conventional print head, Figure 4 is a plane view of a stopper that supports the inside of a molded product, and Figure 5 is a diagram of a conventional print head. A sectional view showing another example, and FIG. 6 is a plan view of a stopper for supporting the outside of the molded product. 1... Armature, 2... Printing wire, 3...
・Electromagnet, 4...Resin sheet stopper, 5...
・Spring, 6... Pressing spring, 7... Cover, 8...
・Supporting member, 9...Inner support stopper, 10...
・Outside support stopper, 11... Name of O-ring representative: F, Physician, Mi, Male, and 1 other person 1st
Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
に付勢されたアーマチュアと、前記アーマチュアの可動
端部にそれぞれ配設された印字ワイヤーと、前記アーマ
チュアを選択的に駆動して前記印字ワイヤーに記録媒体
への打撃印字を行わせる電磁石と、前記アーマチュアの
復帰時にその可動端部に当接する位置に配置され、合成
樹脂のシート材を環状に打ち抜いて構成した弾性部材と
を設けたことを特徴とする印字ヘッド。an armature arranged radially with its movable end facing inward and biased toward the return side; a printing wire disposed at each movable end of the armature; and selectively driving the armature to An electromagnet for causing the printing wire to perform impact printing on a recording medium, and an elastic member formed by punching out a synthetic resin sheet material into an annular shape and arranged at a position to abut the movable end of the armature when the armature returns. A print head characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60193521A JPH0639170B2 (en) | 1985-09-02 | 1985-09-02 | Print head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60193521A JPH0639170B2 (en) | 1985-09-02 | 1985-09-02 | Print head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6253844A true JPS6253844A (en) | 1987-03-09 |
JPH0639170B2 JPH0639170B2 (en) | 1994-05-25 |
Family
ID=16309451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60193521A Expired - Lifetime JPH0639170B2 (en) | 1985-09-02 | 1985-09-02 | Print head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0639170B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5174663A (en) * | 1988-12-09 | 1992-12-29 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53100022A (en) * | 1977-02-09 | 1978-09-01 | Singer Co | Wire matrix type head |
-
1985
- 1985-09-02 JP JP60193521A patent/JPH0639170B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53100022A (en) * | 1977-02-09 | 1978-09-01 | Singer Co | Wire matrix type head |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5174663A (en) * | 1988-12-09 | 1992-12-29 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
US5281037A (en) * | 1988-12-09 | 1994-01-25 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
US5368401A (en) * | 1988-12-09 | 1994-11-29 | Seiko Epson Corporation | Wire dot print head with rotating lever |
US5527118A (en) * | 1988-12-09 | 1996-06-18 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
JPH0639170B2 (en) | 1994-05-25 |
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