JPH01120359A - Dot printer - Google Patents
Dot printerInfo
- Publication number
- JPH01120359A JPH01120359A JP27838687A JP27838687A JPH01120359A JP H01120359 A JPH01120359 A JP H01120359A JP 27838687 A JP27838687 A JP 27838687A JP 27838687 A JP27838687 A JP 27838687A JP H01120359 A JPH01120359 A JP H01120359A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- groove
- permanent magnet
- base yoke
- base
- 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
Links
- 239000012790 adhesive layer Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明はプリントワイヤを磁気力にょシ駆動し、ドツト
マトリックスで印字を行うドツトプリンタに関する。DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention] (Industrial Field of Application) The present invention relates to a dot printer that prints in a dot matrix by magnetically driving a print wire.
（従来の技術）
従来のドツトプリンタの磁気回路としては、例えば第３
図に示す磁気回路がある。ベースヨーク１１永久磁石２
、外側ヨーク３から構成されており、各々は、接着によ
シ一体となっている。したがって、ベースヨーク１、永
久磁石２、外側ヨーク３の各々の間には、接着層９が存
在している。(Prior art) As a magnetic circuit of a conventional dot printer, for example, the third
There is a magnetic circuit shown in the figure. Base yoke 11 permanent magnet 2
, and an outer yoke 3, each of which is glued together. Therefore, an adhesive layer 9 exists between each of the base yoke 1, permanent magnet 2, and outer yoke 3.
接着層９の厚みを均一に調整することは、従来よシ困難
でｂるため、ベースヨーク１、永久磁石２、外側ヨーク
３を接着によシ一体としたのちに、ベースヨーク１のア
ーマチュア７吸引面と外側ヨーク３の接着面と反対側の
面とを同一の平面とするために研磨を行っていたため、
製造性が悪かった。Since it is difficult to adjust the thickness of the adhesive layer 9 uniformly than in the past, after the base yoke 1, permanent magnet 2, and outer yoke 3 are integrated by adhesive, the armature 7 of the base yoke 1 is Because the suction surface and the surface opposite to the adhesive surface of the outer yoke 3 were polished to make them the same plane,
Manufacturability was poor.
また、磁気回路中に存在する接着層−９は、いわゆるエ
アーギャップであるため接着層が均一でないということ
は、磁気回路中のエアーギャップが均−でないことに表
る。し九がって、吸引力にばらつきが生じる原因となっ
ていた九めプリントワイヤの動作特性にばらつきが生じ
、印字品質の低下を招いていた。また、従来の構成の磁
気回路では複数の印字ハンマーが同時に駆動する際の磁
気干渉対策として、永久磁石２の外側にベースヨーク１
と外側ヨーク３を橋絡する側磁路１０を設けることが有
効であるため、側磁路１０を設けていたが、部品点数が
多くなり、また工程の増加に伴ってコストが高くなって
いた。Furthermore, since the adhesive layer 9 present in the magnetic circuit is a so-called air gap, the fact that the adhesive layer is not uniform is reflected in the fact that the air gap in the magnetic circuit is not uniform. As a result, the operating characteristics of the printing wire, which caused variations in suction force, varied, resulting in a deterioration in printing quality. In addition, in the magnetic circuit of the conventional configuration, a base yoke is placed outside the permanent magnet 2 as a countermeasure against magnetic interference when multiple printing hammers are driven simultaneously.
Since it is effective to provide a side magnetic path 10 that bridges the outer yoke 3 and the outer yoke 3, the side magnetic path 10 has been provided, but the number of parts increases and the cost increases as the number of steps increases. .
（発明が解決しようとする問題点）
上記のように従来の磁気回路を持つドツトプリンタでは
、吸引力のばらつきによるプリントワイヤの動作特性に
ばらつきが生じ、印字品質が著しく低下するという問題
点に加えて製造性の悪さ、及び部品点数の増加等による
コスト高になるという問題点があっ九。(Problems to be Solved by the Invention) As mentioned above, in dot printers with conventional magnetic circuits, in addition to the problem that the operating characteristics of the print wire vary due to variations in the attraction force, the print quality deteriorates significantly. There are problems such as poor manufacturability and high costs due to an increase in the number of parts.
本発明は、上記事情に鑑みてなされたもので、プリント
ワイヤの動作特性をほぼ一定にし、印字品質を著しく向
上させることができ、また製造性の悪さ、及び部品点数
の増加等を解消することにより、コストを低下すること
ができるドツトプリンタの提供を目的とする。The present invention has been made in view of the above circumstances, and has the object of making the operating characteristics of the print wire almost constant, significantly improving the printing quality, and solving problems such as poor manufacturability and an increase in the number of parts. An object of the present invention is to provide a dot printer that can reduce costs.
（問題点を解決するための手段）
本発明においては、永久磁石によりプリントワイヤの取
付けられた弾性体を偏倚し、ベースヨークに巻回された
コイルを励磁することにより永久磁石の磁界を打消して
偏倚状態の弾性体を解放し、プリントワイヤを駆動して
印字を行なうドツトプリンタにおいて、ベースヨークに
溝を設け、この溝に永久磁石を挿入して磁気回路を構成
している。(Means for solving the problem) In the present invention, the magnetic field of the permanent magnet is canceled by biasing the elastic body to which the printed wire is attached by the permanent magnet and exciting the coil wound around the base yoke. In a dot printer that prints by releasing a biased elastic body and driving a print wire, a groove is provided in the base yoke, and a permanent magnet is inserted into this groove to form a magnetic circuit.
（作用）
このように構成されたものにあっては、ベースヨークは
分割されずに一体構造であυ、このベースヨークに溝を
設けて永久磁石を接着剤等？用いずに挿入し固定してい
る。したがって、ペースヨーク中に接着剤等が介在しな
いため、従来接着層がエアーギャップの働きをしてその
接着層の厚みの不均一がプリントワイヤの動作にばらつ
きを及ぼしていたものが本発明では解消できる。(Function) In a device configured in this way, the base yoke is an integral structure without being divided, and a groove is provided in this base yoke and a permanent magnet is attached using an adhesive or the like. It is inserted and fixed without being used. Therefore, since there is no adhesive or the like intervening in the pace yoke, the present invention eliminates the problem that conventionally the adhesive layer acts as an air gap and the uneven thickness of the adhesive layer causes variations in the operation of the printed wire. can.
またベースヨークは溝を設けたのみで分割されておらず
、溝以外の残りのベースヨーク部分が、コイルを励磁し
て生じる永久磁石とは逆向きの磁界の通路となるため、
わざわざ従来のように側磁路を設ける必要がない。In addition, the base yoke is not divided except for the groove, and the remaining part of the base yoke other than the groove serves as a path for the magnetic field in the opposite direction to the permanent magnet generated by exciting the coil.
There is no need to take the trouble to provide a side magnetic path as in the conventional case.
また、従来のようにヨークが別体となっており後に接着
する場合には、ヨーク面とアーマチェア吸引面を面一に
そろえるための研磨の工程が必要となってくるが、本発
明のように一体で構成した場合には、このような後の研
磨工程は必要ない。In addition, when the yoke is separate and later glued together as in the past, a polishing process is required to align the yoke surface and the armchair suction surface flush, but with the present invention, In the case of an integral structure, such a subsequent polishing step is not necessary.
（実施例）
以下この発明の一実施例を図面を参照しながら説明する
。(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.
第１図はこの発明の一実施例に係るドツトプリンタの概
略断面図を示すもので、第２図と同一な構成部分には同
符号を付して説明する。FIG. 1 shows a schematic sectional view of a dot printer according to an embodiment of the present invention, and the same components as in FIG. 2 are designated by the same reference numerals and will be described.
即ち、この発明の一実施例に係る第１図のドツトプリン
タでは、第２図に示した従来のドツトプリンタの磁気回
路において分離した別個の部品であったベースヨーク１
と外側ヨーク３とを一体のベースヨーク１としたことを
特徴としている。That is, in the dot printer of FIG. 1 according to an embodiment of the present invention, the base yoke 1, which was a separate and separate component in the magnetic circuit of the conventional dot printer shown in FIG.
and an outer yoke 3 are integrated into a base yoke 1.
なお、符号４はＮ個（Ｎ＝１．２．・・・）の溝を持つ
ヨークプレート、６はＮ個の舌片を持つ板ばね、７は板
ばね６の各々の舌片に取付けられたＮ個のアマチュア、
８はアマチュア７に各々取りつけられたＮ本のプリント
ワイヤ、１１および１２はプリントワイヤの動作方向を
規制するガイド、２け永久磁石、５は鉄芯に巻かれたＮ
個のコイル、１３．１４はスペーサである。Note that 4 is a yoke plate having N grooves (N=1.2...), 6 is a leaf spring having N tongues, and 7 is attached to each tongue of the leaf spring 6. N amateurs,
8 is N printed wires attached to each armature 7, 11 and 12 are guides that regulate the direction of movement of the printed wires, 2 permanent magnets, and 5 is N wound around an iron core.
13 and 14 are spacers.
本発明によるドツトプリンタと従来のものを比較すると
、第２図に示した従来の磁気回路の構成のようにベース
ヨーク１と外側ヨーク３を分離した別個の部品とした場
合には、永久磁石２を磁気回路に挿入する九めには、ゝ
−スヨーク１と永久磁石２及び、外側ヨーク３と永久磁
石２とを接着によシ一体とする必要があった。ところが
、接着することにより存在する接着層９は均一に形成す
ることが困難である丸め、外側ヨーク３の接着層９側と
反対側の面と、ベースヨーク１のアーマチュア７を吸引
する面とを同一平面とするために両端面を研磨する必要
があった。このため製造性が悪かった。また、磁気回路
内に存在する接着層９はいわゆるエアーギャブであるた
め、接着層９の不均一は磁気回路ないにおけるエアーギ
ャグの不均一であり、このため吸引力にばらつきが生じ
ていた。この結果プリントワイヤの動作特性にばらつき
を生じ印字品質の著しい低下の原因になっていた。さら
忙複数本のプリントワイヤを同時に駆動する際の隣接磁
気回路からの磁気干渉の影響を緩和するために外側ヨー
ク３とベースヨーク１とを橋絡するように側磁路１０を
設ける必要があシ、したがって部品点数増加によるヘッ
ドコストの増加を招いていた。Comparing the dot printer according to the present invention with the conventional one, it is found that when the base yoke 1 and the outer yoke 3 are separated and separate parts as in the conventional magnetic circuit configuration shown in FIG. In order to insert the magnetic circuit into the magnetic circuit, it was necessary to integrate the outer yoke 1 and the permanent magnet 2 and the outer yoke 3 and the permanent magnet 2 by adhesive. However, the adhesive layer 9 that exists due to adhesion is difficult to form uniformly in a round shape, and the surface of the outer yoke 3 opposite to the adhesive layer 9 side and the surface of the base yoke 1 that attracts the armature 7 are It was necessary to polish both end faces to make them flush. This resulted in poor productivity. Furthermore, since the adhesive layer 9 present in the magnetic circuit is a so-called air gag, the non-uniformity of the adhesive layer 9 is due to the non-uniformity of the air gag in the magnetic circuit, which causes variations in the attractive force. As a result, the operating characteristics of the print wire vary, causing a significant deterioration in print quality. Furthermore, it is necessary to provide a side magnetic path 10 to bridge the outer yoke 3 and the base yoke 1 in order to reduce the influence of magnetic interference from adjacent magnetic circuits when driving multiple printed wires at the same time. Therefore, the head cost increases due to an increase in the number of parts.
そこで、第１図に示したようにベースヨークと外側ヨー
クとを一体の構造としひとつのベースヨーク１とし外側
ヨーク側に溝１ａに対して永久磁石２を挿入する構造と
したことにより、従来の磁気回路のように磁気回路内に
接着層９が存在しない。したがって、従来接着層９が存
在することにより生じていた問題点を全て解決すること
が可能となった。また、磁気干渉対策として外的に設け
てい九個磁路１０を構造上内包しているため磁気干渉対
策としても有効である。Therefore, as shown in Fig. 1, the base yoke and the outer yoke are integrated into one base yoke 1, and the permanent magnet 2 is inserted into the groove 1a on the outer yoke side. There is no adhesive layer 9 in the magnetic circuit as in the magnetic circuit. Therefore, it has become possible to solve all the problems conventionally caused by the presence of the adhesive layer 9. Further, since the structure includes nine magnetic paths 10 provided externally as a countermeasure against magnetic interference, it is effective as a countermeasure against magnetic interference.
また、上記実施例において溝１ａに挿入する永久磁石２
を二個以上に分割し容易に溝１ａに挿入しやすくすれば
組立て工程が簡単になる。Further, in the above embodiment, the permanent magnet 2 inserted into the groove 1a
The assembly process can be simplified by dividing into two or more pieces and making it easier to insert them into the groove 1a.
なお、第１図の実施例においては、ベースヨーク１ａに
設ける溝１ａをベースヨーク１の外周側に設けたがこれ
に限定されるものではなく、第２図中実線で示した磁路
の任意の位置、例えばベースヨーク１の図中下部に設け
て磁石２を挿入してもよい。このような位置にすれば磁
石を分割する必要がなく製作工程が楽になる。In the embodiment shown in FIG. 1, the groove 1a provided in the base yoke 1a is provided on the outer peripheral side of the base yoke 1, but this is not limiting. For example, the magnet 2 may be inserted at the lower part of the base yoke 1 in the figure. With this position, there is no need to separate the magnet, making the manufacturing process easier.
以上よシ明らかなように、この発明の構成によれば、吸
引力のばらつきや磁気干渉の影響を受けることなく、は
ぼ一定したプリントワイヤの動作波形を得ることができ
、印字品質を著しく向上することができる。また、製造
性も向上しヘッドコストを低下させることが可能になる
。As is clear from the above, according to the configuration of the present invention, a fairly constant operating waveform of the print wire can be obtained without being affected by variations in attraction force or magnetic interference, and printing quality is significantly improved. can do. Furthermore, it is possible to improve manufacturability and reduce head costs.
第１図と第２図は、この発明の一実施例に係るドツトプ
リンタの概略断面図、第３図は従来のドツトプリンタの
概略断面図である。
１・・・ベースヨーク、２・・・永久磁石、３・・・外
側ヨーク、５・・・コイル、６・・・板ばね、７・・・
アーマチュア、８・・・プリントワイヤ。
代理人 弁理士 則 近 憲 佑
同 松 山 光 之第１図1 and 2 are schematic sectional views of a dot printer according to an embodiment of the present invention, and FIG. 3 is a schematic sectional view of a conventional dot printer. DESCRIPTION OF SYMBOLS 1... Base yoke, 2... Permanent magnet, 3... Outer yoke, 5... Coil, 6... Leaf spring, 7...
Armature, 8...Printed wire. Agent Patent Attorney Noriyuki Chika Yudo Hikaru Matsuyama Figure 1
Claims (3)
性体を偏倚し、ベースヨークに巻回されたコイルを励磁
することにより前記永久磁石の磁界を打消して偏倚状態
の前記弾性体を解放し、プリントワイヤを駆動して印字
を行なうドットプリンタにおいて、前記ベースヨークに
溝を設け、この溝に前記永久磁石を挿入したことを特徴
とするドットプリンタ。(1) biasing the elastic body to which the printed wire is attached by a permanent magnet and exciting a coil wound around the base yoke to cancel the magnetic field of the permanent magnet and release the biased elastic body; A dot printer that performs printing by driving a print wire, characterized in that the base yoke is provided with a groove, and the permanent magnet is inserted into the groove.
れていることを特徴とする特許請求の範囲第１項記載の
ドットプリンタ。(2) The dot printer according to claim 1, wherein the permanent magnet is divided into a plurality of parts and inserted into the groove.
いることを特徴とする特許請求の範囲第１項記載のドッ
トプリンタ。(3) The dot printer according to claim 1, wherein the groove is provided at the bottom of the base yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27838687A JPH01120359A (en) | 1987-11-05 | 1987-11-05 | Dot printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27838687A JPH01120359A (en) | 1987-11-05 | 1987-11-05 | Dot printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01120359A true JPH01120359A (en) | 1989-05-12 |
Family
ID=17596617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27838687A Pending JPH01120359A (en) | 1987-11-05 | 1987-11-05 | Dot printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01120359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7880222B2 (en) | 2005-02-21 | 2011-02-01 | Sanken Electric Co., Ltd. | Semiconductor device having plural regions and elements with varying areas depending on the region |
-
1987
- 1987-11-05 JP JP27838687A patent/JPH01120359A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7880222B2 (en) | 2005-02-21 | 2011-02-01 | Sanken Electric Co., Ltd. | Semiconductor device having plural regions and elements with varying areas depending on the region |
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