JPH0225338B2 - - Google Patents
Info
- Publication number
- JPH0225338B2 JPH0225338B2 JP22651382A JP22651382A JPH0225338B2 JP H0225338 B2 JPH0225338 B2 JP H0225338B2 JP 22651382 A JP22651382 A JP 22651382A JP 22651382 A JP22651382 A JP 22651382A JP H0225338 B2 JPH0225338 B2 JP H0225338B2
- Authority
- JP
- Japan
- Prior art keywords
- armature
- buffer sheet
- electromagnetic core
- dot
- dot printer
- 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.)
- Expired
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
- Impact Printers (AREA)
Description
【発明の詳細な説明】
(1) 発明の技術分野
本発明はドツトプリンタ用ヘツドに関し、特に
アーマチユアと電磁コア間に設けた緩衝シートの
長寿命化のための改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a head for a dot printer, and particularly to an improvement for extending the life of a buffer sheet provided between an armature and an electromagnetic core.
(2) 技術の背景
ドツトプリンタ用ヘツドは電磁石でアーマチユ
アを駆動しアーマチユアの先端に固定したピンワ
イヤを前方に押出して印字を行うものである。こ
のようなドツトプリンタ用ヘツドは、ドツト形成
用ピンワイヤを支持する複数のアーマチユアを円
環状に設け、各アーマチユアに対向して電磁コア
を設け、アーマチユアおよび電磁コアの摩耗対策
の一例として例えばカプトンシート又はマイラシ
ートからなる緩衝シートをアーマチユアおよび電
磁コア間に連続円環状に配設している。(2) Background of the technology Dot printer heads print by driving an armature with an electromagnet and pushing forward a pin wire fixed to the tip of the armature. Such a head for a dot printer is provided with a plurality of armatures supporting dot forming pin wires in an annular shape, and an electromagnetic core is provided facing each armature, and as an example of a measure against wear of the armature and the electromagnetic core, for example, a Kapton sheet or mylar is used. A buffer sheet consisting of a sheet is arranged in a continuous annular shape between the armature and the electromagnetic core.
(3) 従来技術と問題点
従来のドツトプリンタ用ヘツドにおいては、緩
衝シートは一定位置に保持されていたため、アー
マチユアの打撃点において部分的に摩耗、劣化が
激しく、寿命が短く交換周期が短くなり交換作業
の手間を要するものであつた。(3) Conventional technology and problems In conventional heads for dot printers, the buffer sheet was held in a fixed position, so it was subject to severe wear and deterioration at the impact point of the armature, resulting in a short lifespan and a short replacement cycle, requiring replacement. This required a lot of work and effort.
(4) 発明の目的
本発明は上記従来技術の欠点は鑑みなされたも
のであつて、緩衝シートの長寿命化を図り、交換
による材料の無駄および交換作業の手間を省いた
ドツトプリンタ用印字ヘツドの提供を目的とす
る。(4) Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks of the prior art, and provides a print head for dot printers that extends the lifespan of the buffer sheet and eliminates the waste of materials and labor of replacement work. For the purpose of providing.
(5) 発明の構成
この目的を達成するため、本発明では、ドツト
形成用ピンワイヤを支持する複数のアーマチユア
を円環状に設け、各アーマチユアに対向して電磁
コアを設け、アーマチユアおよび電磁コア間に円
環状緩衝シートを配設したドツトプリンタ用ヘツ
ドにおいて、上記緩衝シートを支持部材により回
転可能に支持すると共に、上記アーマチユアの中
心軸を電磁コアの中心軸に対し上記緩衝シートの
円周方向に関しずらせて配置したことを特徴とし
ている。(5) Structure of the Invention In order to achieve this object, in the present invention, a plurality of armatures supporting dot forming pin wires are provided in an annular shape, an electromagnetic core is provided opposite to each armature, and an electromagnetic core is provided between the armature and the electromagnetic core. In a dot printer head provided with an annular buffer sheet, the buffer sheet is rotatably supported by a support member, and the center axis of the armature is offset with respect to the center axis of the electromagnetic core in the circumferential direction of the buffer sheet. It is characterized by its placement.
(6) 発明の実施例
第１図および第２図は各々本発明に係るドツト
プリンタ用印字ヘツドの断面図および部分平面図
である。ドツト形成用ピンワイヤ１は支持片２の
先端に装着される。支持片２は強磁性体材料から
なるアーマチユア３に保持される。アーマチユア
３には板バネ４が固定され、この板バネ４は強磁
性体材料からなる支持体５に保持され、この支持
体５はヨーク９及びセパレータ１０を介して永久
磁石に吸引される。アーマチユア３はドツト数に
対応した数だけ中心軸Ｘの廻りに円環状に配設さ
れる。各アーマチユア３に対向して電磁コア７が
設けられる。(6) Embodiments of the Invention FIGS. 1 and 2 are a sectional view and a partial plan view, respectively, of a print head for a dot printer according to the present invention. The dot-forming pin wire 1 is attached to the tip of the support piece 2. The support piece 2 is held by an armature 3 made of ferromagnetic material. A leaf spring 4 is fixed to the armature 3, and this leaf spring 4 is held by a support 5 made of a ferromagnetic material, and this support 5 is attracted to a permanent magnet via a yoke 9 and a separator 10. The number of armatures 3 corresponding to the number of dots is arranged in an annular shape around the central axis X. An electromagnetic core 7 is provided opposite each armature 3.
緩衝シート８は円環状をなしアーマチユア３と
電磁コア７との間に配置され、その外周を、セパ
レータ１０により支持体５とコア９との間に形成
された溝によつて回転可能に支持されている。ま
た各アーマチユア３は第３図に示すようにその中
心軸を電磁コア７の中心軸から前記緩衝シート８
の円周方向にずらせて配置されている。 The buffer sheet 8 has an annular shape and is arranged between the armature 3 and the electromagnetic core 7, and its outer periphery is rotatably supported by a groove formed between the support body 5 and the core 9 by the separator 10. ing. Further, each armature 3 has its central axis from the central axis of the electromagnetic core 7 to the buffer sheet 8, as shown in FIG.
are arranged so as to be shifted in the circumferential direction.
このように構成された本実施例は、電磁コア７
がアーマチユア３を吸引したとき、アーマチユア
３は電磁コア７の中心に引付けられるような分力
を生じ緩衝シート８に矢印Ａ方向の回転力を与え
る。これにより緩衝シート８は回転し、毎回異な
つた位置でアーマチユア３の衝撃を受けるように
なるため、従来の毎回同一箇所で衝撃を受けるの
に比し、寿命の延長が得られる。 In this embodiment configured in this way, the electromagnetic core 7
When the armature 3 is attracted by the armature 3, the armature 3 generates a component force that is attracted to the center of the electromagnetic core 7, and applies a rotational force to the buffer sheet 8 in the direction of arrow A. As a result, the buffer sheet 8 rotates and receives the impact from the armature 3 at a different position each time, resulting in a longer service life compared to the conventional case where the impact is applied at the same location each time.
(7) 発明の効果
以上説明したように、本発明に係るドツトプリ
ンタ用ヘツドにおいては、アーマチユアの衝撃力
により自動的に環状緩衝シートがアーマチユアの
打撃方向と直交する円周方向に力を受けて一定方
向に移動する構成がとられているため、アーマチ
ユアの印字動作毎に緩衝シートは円周方向にわず
かづつ移動する。従つて、緩衝シート全面が均一
に使用されるため部分的な劣化は防止され、緩衝
シートの寿命が長くなり、短期間での交換による
材料の無駄および交換作業の手間が省かれる。(7) Effects of the Invention As explained above, in the dot printer head according to the present invention, the impact force of the armature automatically causes the annular buffer sheet to receive a constant force in the circumferential direction perpendicular to the striking direction of the armature. Since the buffer sheet is configured to move in the circumferential direction, the buffer sheet moves slightly in the circumferential direction each time the armature performs a printing operation. Therefore, since the entire surface of the buffer sheet is used uniformly, local deterioration is prevented, the life of the buffer sheet is extended, and the wastage of materials due to short-term replacement and the hassle of replacement work are eliminated.
第１図および第２図は各々本発明に係るドツト
プリンタ用ヘツドの断面図および部分平面図、第
第３図は本発明の実施例におけるアーマチユア部
分の断面図である。
１……ピンワイヤ、３……アーマチユア、４…
…板バネ、７……電磁コア、８……緩衝シート。
1 and 2 are a sectional view and a partial plan view, respectively, of a head for a dot printer according to the present invention, and FIG. 3 is a sectional view of an armature portion in an embodiment of the present invention. 1...pin wire, 3...armature, 4...
...Plate spring, 7...Electromagnetic core, 8...Buffer sheet.
Claims (1)
ーマチユアを円環状に設け、各アーマチユアに対
向して電磁コアを設け、アーマチユアおよび電磁
コア間に円環状緩衝シートを配設したドツトプリ
ンタ用ヘツドにおいて、 上記緩衝シートを支持部材により回転可能に支
持すると共に、上記アーマチユアの中心軸を電磁
コアの中心軸に対し上記緩衝シートの円周方向に
関しずらせて配置したことを特徴とするドツトプ
リンタ用ヘツド。[Scope of Claims] 1. For a dot printer, in which a plurality of armatures supporting pin wires for dot formation are arranged in a ring, an electromagnetic core is provided facing each armature, and a circular buffer sheet is arranged between the armature and the electromagnetic core. A head for a dot printer, characterized in that the buffer sheet is rotatably supported by a support member, and the center axis of the armature is offset from the center axis of the electromagnetic core with respect to the circumferential direction of the buffer sheet. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22651382A JPS59118470A (en) | 1982-12-25 | 1982-12-25 | Head for dot printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22651382A JPS59118470A (en) | 1982-12-25 | 1982-12-25 | Head for dot printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118470A JPS59118470A (en) | 1984-07-09 |
| JPH0225338B2 true JPH0225338B2 (en) | 1990-06-01 |
Family
ID=16846299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22651382A Granted JPS59118470A (en) | 1982-12-25 | 1982-12-25 | Head for dot printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118470A (en) |
-
1982
- 1982-12-25 JP JP22651382A patent/JPS59118470A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59118470A (en) | 1984-07-09 |
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