JPH02200448A - Impact dot printer head - Google Patents
Impact dot printer headInfo
- Publication number
- JPH02200448A JPH02200448A JP2010189A JP2010189A JPH02200448A JP H02200448 A JPH02200448 A JP H02200448A JP 2010189 A JP2010189 A JP 2010189A JP 2010189 A JP2010189 A JP 2010189A JP H02200448 A JPH02200448 A JP H02200448A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- electromagnet
- armature
- polarity
- printing units
- 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
- 230000004907 flux Effects 0.000 abstract description 9
- 230000005284 excitation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はインパクトドツトプリンタの印字ヘッドに関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a print head for an impact dot printer.
従来、第１図に示す様な電磁石３を回巻したコア１と、
該コア１に吸引されるアーマチュア２と、ヨーク５とに
よって１つの印字ユニットを構成し、この印字ユニット
を複数個、放射状又は−列に配列した印字ヘッドが知ら
れている。この場合、各印字ユニットの電磁石３による
磁極の極性は、第４図（ａ）に示す様なすべて同一方向
か、第４図（ｂ）に示す様な隣りどうしが互いに逆方向
になる様に配置されていた。Conventionally, a core 1 has an electromagnet 3 wound around it as shown in FIG.
A printing head is known in which a printing unit is constituted by an armature 2 attracted to the core 1 and a yoke 5, and a plurality of printing units are arranged radially or in a row. In this case, the polarity of the magnetic poles of the electromagnets 3 of each printing unit may be in the same direction as shown in FIG. 4(a), or in opposite directions for adjacent ones as shown in FIG. 4(b). It was placed.
かかる従来技術に対し、第４図（ａ）に示す様な同一方
向の極性に配置した場合、印字ユニット内の磁束は１ｍ
６図の点線の如く通る。従って各印字ユニッートの共通
磁路となるフレーム８部６は、必要充分以上の断面積を
確保する様にしないと、１つの印字ユニットを駆動する
場合に比べ、近接する印字ユニットを同時に駆動した場
合、フレーム８部６で磁気飽和を起こし易くなる。第５
図ａは、この印字ユニットの極性を同一方向に配置した
場合の、印字力と隣接印字ユニット同時駆動本数の相関
を示している。第５図ａに示される様に、両隣りの２ケ
の印字ユニット同時駆動時以外は、１ケの印字ユニット
がアーマチュア２に磁束が流れることによって得られる
印字力は、同時駆動数が多い程低下し必要な印字品質が
得られなくなる。In contrast to this prior art, when the printing units are arranged with polarity in the same direction as shown in FIG. 4(a), the magnetic flux within the printing unit is 1 m.
It passes along the dotted line in Figure 6. Therefore, if the frame 8 section 6, which serves as the common magnetic path for each printing unit, does not have a cross-sectional area larger than necessary, it is necessary to ensure that the cross-sectional area of the frame 8 section 6, which serves as a common magnetic path for each printing unit, is larger than necessary.When driving adjacent printing units simultaneously, compared to when driving one printing unit, , magnetic saturation is likely to occur in the frame 8 portion 6. Fifth
Figure a shows the correlation between the printing force and the number of adjacent printing units simultaneously driven when the printing units are arranged with polarities in the same direction. As shown in Figure 5a, except when two adjacent printing units are driven simultaneously, the printing force obtained by one printing unit due to the magnetic flux flowing through the armature 2 increases as the number of simultaneous drives increases. The print quality deteriorates and the necessary print quality cannot be obtained.
尚第５図ａに於て、両隣りの２ケの印字ユニット同時駆
動時には、逆に印字力の増加傾向が見られるが、これは
第７図の点線で示す様なアーマチュア２を通らずに、隣
りのコアに漏れてしまう所謂漏れ磁束の減少する効果が
、磁気飽和による印字力低下を上まわっているからであ
る。In Fig. 5a, when two printing units on both sides are driven simultaneously, there is a tendency for the printing force to increase, but this is because the printing force does not pass through the armature 2 as shown by the dotted line in Fig. 7. This is because the effect of reducing so-called leakage magnetic flux that leaks to adjacent cores exceeds the decrease in printing force due to magnetic saturation.
以上水した様に、同一方向の極性に配置した場合、共通
磁路部を大型化しないと複数ケの印字ユニット同時駆動
時の印字力が確保できず、印字ヘッドの小型、軽量化の
妨げとなる問題点を有していた。As mentioned above, if they are arranged with polarity in the same direction, it is not possible to secure the printing force when multiple printing units are driven simultaneously unless the common magnetic path section is enlarged, which hinders the reduction in size and weight of the print head. It had some problems.
また、第４図（ｂ）に示す様な、隣りどうしの印字ユニ
ットが互いに逆方向の磁極となる配置にした場合、隣接
印字ユニットの同時駆動時の磁束は第７図の様な流れを
行う、小型・軽量を前提としてコア１間を小さく設定す
る程、アーマチュア２を磁束が通らずに漏れてしまい結
果として第５図すに示す様に隣接印字ユニットを同時励
磁した場合、印字力低下をもたらす問題点を有していた
。In addition, when adjacent printing units are arranged so that their magnetic poles are in opposite directions, as shown in Figure 4(b), the magnetic flux when the adjacent printing units are driven simultaneously flows as shown in Figure 7. The smaller the distance between the cores 1 is set on the premise of compactness and light weight, the more the magnetic flux will not pass through the armature 2 and will leak, resulting in a decrease in printing force when adjacent printing units are simultaneously excited as shown in Figure 5. It had some problems.
本発明はかかる従来の問題点を解決し、印字ユニットの
複数同時駆動時の印字力低下を軽減し、小型・軽量のイ
ンパクトドツトプリンタヘッドを提供することを目的と
する。SUMMARY OF THE INVENTION An object of the present invention is to solve such conventional problems, reduce the decrease in printing power when a plurality of printing units are driven simultaneously, and provide a compact and lightweight impact dot printer head.
本発明は、複数の印字ユニットの各電磁石の励磁時に発
生する磁極の極性が、隣接する印字ユニット３ケを同極
で構成しこれを１ブロックとし、かつ隣接するブロック
毎に極性が異なる様に構成配置する手段により、かかる
従来技術の問題点を解決するものである。In the present invention, the polarity of the magnetic pole generated when each electromagnet of a plurality of printing units is excited is such that three adjacent printing units are composed of the same polarity and constitute one block, and the polarity is different for each adjacent block. The problem of the prior art is solved by means of configuration and arrangement.
第２図に本発明の極性構成を示す９本発明の配列では、
両隣りの印字ユニットが同極となる第２図（Ｃ）の場合
と、両隣りの印字ユニットのうち一方が異極となる第２
図（ｄ）の場合の２つが存在する。FIG. 2 shows the polar configuration of the present invention.9 In the arrangement of the present invention,
In the case of FIG. 2 (C) where the printing units on both sides have the same polarity, and in the case of the second case where one of the printing units on both sides has different polarity.
There are two cases shown in Figure (d).
各々の隣接印字ユニット同時駆動時の印字力変化を第３
図に示す、Ｃとｄの特性上２つのバラツキを有するもの
の、そのバラツキは、複数ケの印字ユニット同時駆動の
パターンによるバラツキを考慮すると少なく、かつ印字
力低下の度合は、従来例と比べて最小となる。The change in printing force when each adjacent printing unit is driven simultaneously is
Although there are two variations in the characteristics of C and d shown in the figure, these variations are small when considering the variations due to the pattern of simultaneous driving of multiple printing units, and the degree of decrease in printing force is compared to the conventional example. Minimum.
以下に本発明の実施例を図面に基いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明のインパクトドツトプリンタヘッドの側
断面図である。磁気回路を構成するコア１、ヨーク５及
びアーマチュア２と該アーマチュア２を適宜駆動する！
磁石３を備えた印字ユニットを複数隣接して配置されて
いる。第１図上半分には、電磁石３に通電した印字時の
印字ユニットの状態を示し、下半分には電磁石３に通電
していない為、レバー３は復帰バネ１２により、ダンパ
ストッパ１１に押しつけられた印字ユニットの待機状態
を示している。印字ユニットは印字時に、電磁石３に通
電することにより点線で示す磁束が発生する。FIG. 1 is a side sectional view of the impact dot printer head of the present invention. Drive the core 1, yoke 5, and armature 2 that make up the magnetic circuit as appropriate!
A plurality of printing units each having a magnet 3 are arranged adjacent to each other. The upper half of FIG. 1 shows the state of the printing unit when printing when the electromagnet 3 is energized, and the lower half shows the state of the printing unit when printing is performed when the electromagnet 3 is energized, and the lower half shows the state of the printing unit when the electromagnet 3 is not energized, so the lever 3 is pressed against the damper stopper 11 by the return spring 12. This shows the standby state of the printing unit. During printing, the printing unit generates magnetic flux shown by dotted lines by energizing the electromagnet 3.
このアーマチュア２を鎖交する磁束によりレバー８と一
体になったアーマチュア２がコア１に吸引され、レバー
８先端に係合されたワイヤ７を突出させることで、リボ
ン１３を介して紙１４を押打し印字がなされる。印字が
終了すると、電磁石３への通電を１了することによりレ
バー８は待帰状聾に戻る。The armature 2 integrated with the lever 8 is attracted to the core 1 by the magnetic flux interlinking the armature 2, and the wire 7 engaged with the tip of the lever 8 is caused to protrude, thereby pushing the paper 14 through the ribbon 13. Stamp printing is done. When printing is completed, the electromagnet 3 is energized once and the lever 8 returns to the return state.
第２図（ｂ）は本発明の特徴となる磁極の配列を示すフ
レーム及電磁石の横断面図である０本実施例では印字ユ
ニット総計２４ケが円配列されている例であり、図中印
字ユニット名ＡＢＣを１ブロックとすると他（Ｇ、
Ｈ，Ｉ） （Ｍ、 Ｎ、 百）（Ｓ、Ｔ、Ｕ）の
３ブｏツ’７ｇｔ１２’ｙ（７）印字ユニットが全て同
極、残りの１２ケが前記１２ケと逆方向の極性を示して
いる。FIG. 2(b) is a cross-sectional view of the frame and electromagnet showing the arrangement of magnetic poles, which is a feature of the present invention. In this embodiment, a total of 24 printing units are arranged in a circle; If unit name ABC is one block, others (G,
H, I) (M, N, 100) (S, T, U) 3 units '7gt12'y (7) All printing units have the same polarity, and the remaining 12 units have the opposite polarity to the above 12 units. It shows.
第２の実施例を第２図＜ｃ＞に示す、電磁石の極性を第
２図（ｂ）の如く配置するにあたり、すべての電磁石３
を同一の巻線方向で作られたものを用い、その極性を、
基板１０のパターンにより、決定している例である。The second embodiment is shown in FIG. 2<c>. When arranging the polarity of the electromagnets as shown in FIG. 2(b), all the electromagnets 3
are made with the same winding direction, and the polarity is
In this example, it is determined based on the pattern of the substrate 10.
第３の実施例は、電磁石の極性を第２図（ｂ）のように
配置するにあたり、必要に応じて第２図（ｄ）に示す巻
線方向の異なる２種類の電磁石３ａ、３ｂを使用する例
である。In the third embodiment, two types of electromagnets 3a and 3b with different winding directions as shown in FIG. 2(d) are used as necessary when arranging the polarity of the electromagnets as shown in FIG. 2(b). This is an example.
以上説明した様に、本発明によれば、複数の印字ユニッ
トを同時駆動した際の印字品質低下を押えつつ、印字ヘ
ッドの小型・軽量化が実現できる。As described above, according to the present invention, it is possible to reduce the size and weight of the print head while suppressing deterioration in print quality when a plurality of print units are driven simultaneously.
第１図はこの発明を具体化した印字ヘッドの側断面図。
第２図（ａ）は本発明の詳細な説明する為の磁極の配列
を示すフレーム及電磁石の横断面図。
第２図（ｂ）は本発明を示すフレーム及電磁石の横断面
図。
第２図（ｃ）は第２の実施例を示す、基板・フレームの
部分斜視図。
第２図（ｄ）は第３の実施例で説明される巻線方向が異
なるコイルの斜視図。
第３図は本発明による印字力と隣接印字ユニット同時駆
動本数の相関図。
第４図（ａ）、第４図（ｂ）は従来例を示す横断面図。
第５図は従来例による印字力と隣接印字ユニット同時駆
動本数の相関図。
第６図、第７図は、従来例の作用の説明図である。
ｌ・・・コア
２・・・アーマチュア
３・・・電磁石
５・・・ヨーク
６・・・フレームａ
７・・・ワイヤ
８・・・レバー
９・・・フレーム
１０・・・基板
１１・・・ダンパストッパ
１２・・・復帰バネ
１３・・・リボン
１４・・・紙
以 上
出願人 セイコーエプソン株式会社
代理人 弁理士 銘木 喜三部 他１名（Ｑ）
（ｂ）
第２図
Ｐ斉ｔ【ヒア千２・シト１司Ｗ季島巨實ｐｓｉ本１更第
３図
第５図FIG. 1 is a side sectional view of a print head embodying the invention. FIG. 2(a) is a cross-sectional view of a frame and an electromagnet showing the arrangement of magnetic poles for explaining the present invention in detail. FIG. 2(b) is a cross-sectional view of a frame and an electromagnet showing the present invention. FIG. 2(c) is a partial perspective view of the board and frame, showing the second embodiment. FIG. 2(d) is a perspective view of a coil with different winding directions explained in the third embodiment. FIG. 3 is a correlation diagram between printing force and the number of adjacent printing units driven simultaneously according to the present invention. FIG. 4(a) and FIG. 4(b) are cross-sectional views showing a conventional example. FIG. 5 is a correlation diagram between printing force and the number of adjacent printing units driven simultaneously in a conventional example. FIGS. 6 and 7 are explanatory diagrams of the operation of the conventional example. l... Core 2... Armature 3... Electromagnet 5... Yoke 6... Frame a 7... Wire 8... Lever 9... Frame 10... Board 11... Damper stopper 12...Return spring 13...Ribbon 14...Paper or more Applicant Seiko Epson Co., Ltd. agent Patent attorney Kisanbu Meiki and 1 other person (Q) (b) Figure 2 P Heresen 2 Shito 1ji W Kishima Koshi psi Book 1 Edit Figure 3 Figure 5
Claims (1)
アーマチュアを適宜駆動する電磁石を備えた印字ユニッ
トを複数隣接して配置したインパクトドットプリンタヘ
ッドに於いて、 前記複数の印字ユニットの各電磁石の励磁時に発生する
磁極の極性が、隣接する印字ユニット３ケを同極で構成
しこれを１ブロックとし、かつ隣接するブロック毎に極
性が異なる様に構成配置したことを特徴とするインパク
トドットプリンタヘッド。[Scope of Claims] In an impact dot printer head in which a plurality of printing units each including a core, a yoke, and an armature forming a magnetic circuit, and an electromagnet for appropriately driving the armature are arranged adjacent to each other, the plurality of printing units include: Impact characterized in that the polarity of the magnetic pole generated when each electromagnet is excited is configured such that three adjacent printing units are composed of the same polarity and constitute one block, and the polarity is different for each adjacent block. dot printer head.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010189A JPH02200448A (en) | 1989-01-30 | 1989-01-30 | Impact dot printer head |
| SG1995906947A SG26407G (en) | 1988-12-09 | 1989-12-07 | Wire-dot printer having printing wire driving device and manufacturing method thereof |
| EP89122589A EP0372557B1 (en) | 1988-12-09 | 1989-12-07 | Wire-dot printer having printing wire driving device and manufacturing method thereof |
| DE89122589T DE68910946T2 (en) | 1988-12-09 | 1989-12-07 | Dot-matrix printer with needle drive and method for its manufacture. |
| US07/449,691 US5174663A (en) | 1988-12-09 | 1989-12-11 | Wire dot print head and method for manufacturing same |
| US07/886,698 US5281037A (en) | 1988-12-09 | 1992-05-20 | Wire dot print head and method for manufacturing same |
| US08/093,913 US5368401A (en) | 1988-12-09 | 1993-07-20 | Wire dot print head with rotating lever |
| US08/310,091 US5527118A (en) | 1988-12-09 | 1994-09-22 | Wire dot print head and method for manufacturing same |
| HK72595A HK72595A (en) | 1988-12-09 | 1995-05-11 | Wire-dot printer having printing wire driving device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010189A JPH02200448A (en) | 1989-01-30 | 1989-01-30 | Impact dot printer head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02200448A true JPH02200448A (en) | 1990-08-08 |
Family
ID=12017723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010189A Pending JPH02200448A (en) | 1988-12-09 | 1989-01-30 | Impact dot printer head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02200448A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312194A (en) * | 1990-11-30 | 1994-05-17 | Citizen Watch Co., Ltd. | Printing head for printer |
-
1989
- 1989-01-30 JP JP2010189A patent/JPH02200448A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312194A (en) * | 1990-11-30 | 1994-05-17 | Citizen Watch Co., Ltd. | Printing head for printer |
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