JPH01160650A - Printing head - Google Patents

Printing head

Info

Publication number
JPH01160650A
JPH01160650A JP32067287A JP32067287A JPH01160650A JP H01160650 A JPH01160650 A JP H01160650A JP 32067287 A JP32067287 A JP 32067287A JP 32067287 A JP32067287 A JP 32067287A JP H01160650 A JPH01160650 A JP H01160650A
Authority
JP
Japan
Prior art keywords
coil spring
platen
stiffness
pin
pins
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
JP32067287A
Other languages
Japanese (ja)
Inventor
Hideyo Hashimoto
橋本　英世
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP32067287A priority Critical patent/JPH01160650A/en
Publication of JPH01160650A publication Critical patent/JPH01160650A/en
Pending legal-status Critical Current

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
    • B41J2/235—Print head assemblies
    • B41J2/25—Print wires
    • B41J2/26—Connection of print wire and actuator

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To uniformize an impact pressure on a platen by setting stiffness of a coil spring located an armature for each individual pin number and mounting the coil spring. CONSTITUTION:In a spring charging-type printing head which is driven by a coil spring, the distance between a platen 3 and wire 4 for a center pin is shorter than those for an upper and a lower pin because the platen 3 is round. In addition, a pin guide 5 has holes 51-1 for #1 and holes 51-24 for #24, totaling 24 holes, through which wire 4 is inserted. Then, for instance, a coil spring 1 with high stiffness is mounted in pins #1, #2, #3, #4 and #21, #22, #23, #24, while a coil spring with low stiffness is mounted in pins #11, #12, #13 and #14. In other pins, a coil spring with moderate stiffness is mounted. In this manner, the impact pressure on the platen 3 becomes uniform.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は印字ヘッドに関し、特にコイルスプリングのス
ティフネスの設定内容の改善を図った印字ヘッドに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a print head, and particularly to a print head in which stiffness settings of a coil spring are improved.

〔従来の技術〕[Conventional technology]

従来、この種の印字ヘッドには、すべて同一スエイフネ
スのスプリングが挿入されていた。Conventionally, all print heads of this type have springs of the same slenderness inserted therein.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の印字ヘッドは、同一スティフネスのスプ
リングを実装しているので、丸いプラテンに対するイン
パクト圧が均一にとれないという欠点がある。Since the above-described conventional print heads are equipped with springs having the same stiffness, they have the disadvantage that the impact pressure against the round platen cannot be uniformly applied.

つまり、プラテンが丸いため、プラテンと各ピン、ワイ
ヤーまでの距離が異なり、印字ヘッド自体は各ピンのイ
ンパクト圧が同じでもプラテン表面に於いてはインパク
ト圧が異ってしまう、たとえば、２４ワイヤーを有する
プリンタ装置では、＃１．２．２３．２４といった端ピ
ンではインパクト圧が小さくなり＃１１．１２．１３．
１４とい・っな中央ピンではインパクト圧が大きくなる
。In other words, because the platen is round, the distance from the platen to each pin and wire is different, and even though the impact pressure of each pin is the same for the print head itself, the impact pressure on the platen surface is different. In printers having #1.2.23.24 end pins, the impact pressure is small and #11.12.13.
The impact pressure will be large at the center pin such as 14.

このようなインパクト圧を均一にするため、スプリング
とアマチュアの間にある媒体（キャップ）の厚さを変え
る調整を行っており、これには莫大な調整工数を必要と
する欠点がある。In order to make the impact pressure uniform, adjustments are made by changing the thickness of the medium (cap) between the spring and the armature, but this has the disadvantage of requiring a huge amount of adjustment man-hours.

本発明の目的は上述した欠点を除去し、プラテンに対す
るイパクト圧の均一が図れる印字ヘッドを提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a print head that can achieve uniform impact pressure against the platen.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の印字ヘッドは、コイルスプリング駆動のスプリ
ングチャージ式の印字ヘッドにおいて、アマチュア下部
にあるコイルスプリングのスティフネスを各ピン番号別
に設定して実装する手段を備えて構成される。The print head of the present invention is a spring-charge type print head driven by a coil spring, and includes means for setting and mounting the stiffness of the coil spring at the lower part of the armature for each pin number.

〔実施例〕〔Example〕

次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明の印字ヘッドの一実施例を示す構成図で
ある。第１図の実施例は、コイルスプリング１、キャッ
プ２、ワイヤ４、ピンガイド５、ワイヤガイド６、アマ
チュアガイド７、永久磁石８、コイル９、コアベース１
０、アマチュア１１等を備えて構成され、コイルスプリ
ング１は、＃１〜＃２４各ピンに対し１個ずつ計２４個
同心円状に並べられている。＃１．＃２．＃３．＃４及
び＃２１．＃２２．＃２３．＃２４の各ピンにはスティ
フネスが大なるコイルスプリングが実装され、＃１１．
＃１２．＃１３．＃１４の各ピンにはスティフネスの小
なるコイルスプリングが実装され、その他のピンには、
スティフネスが中位のコイルスプリングが実装されてい
る。FIG. 1 is a block diagram showing an embodiment of the print head of the present invention. The embodiment shown in FIG. 1 includes a coil spring 1, a cap 2, a wire 4, a pin guide 5, a wire guide 6, an armature guide 7, a permanent magnet 8, a coil 9, and a core base 1.
0, armature 11, etc., and a total of 24 coil springs 1 are arranged concentrically, one for each pin #1 to #24. #1. #2. #3. #4 and #21. #22. #23. A coil spring with high stiffness is mounted on each pin of #24, and a coil spring with high stiffness is mounted on each pin of #24.
#12. #13. A coil spring with small stiffness is mounted on each pin of #14, and the other pins are equipped with a coil spring with low stiffness.
A coil spring with medium stiffness is installed.

第２図は第１図の印字ヘッドとプラテン３との配置関係
を示す側面図で、プラテン３が丸いため、上下ピンより
も中央ピンの方がプラテン３とワイヤ４との距離が小さ
い。FIG. 2 is a side view showing the arrangement relationship between the print head shown in FIG. 1 and the platen 3. Since the platen 3 is round, the distance between the platen 3 and the wire 4 is smaller at the center pin than at the upper and lower pins.

第３図はピンガイド５の正面図で、＃に対する５１−１
から＃２４に対する５１−２４まで２４個の穴を有し、
その穴にワイヤ４が挿入されている。Figure 3 is a front view of the pin guide 5, with 51-1 for #.
It has 24 holes from 51-24 to #24,
A wire 4 is inserted into the hole.

こうして、印字ヘッド内のスプリングをスティフネス別
に実用することにより、プラテン表示上のインパクト圧
が均等に維持される。In this way, by using the springs in the print head according to their stiffness, the impact pressure on the platen display is maintained evenly.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、印字ヘッド内のスプリン
グをスティフネス別に実装することにより、プラテン表
面上のインパクト圧が均等に維持されて正常な印字がで
き、インパクト圧を均一にするための調整工数が大幅に
短縮され大幅なコストダウンが図れる印字ヘッドが実現
できるという効果がある。As explained above, the present invention maintains the impact pressure on the platen surface evenly by mounting the springs in the print head according to their stiffness, thereby enabling normal printing. This has the effect of making it possible to realize a print head that can significantly shorten the time and achieve significant cost reductions.

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

第１図は本発明の印字ヘッドの一実施例を示す構成図、
第２図は第１図の印字ヘッドとプラテン３との配置関係
を示す側面図、第３図は第１図のピンガイドの正面図で
ある。 ｌ・・・コイルスプリング、２・・・キャップ、３・・
・プラテン、４・・・ワイヤ、５・・・ピンガイド、６
・・・ワイヤガイド、７・・・アマチュアガイド、８・
・・永久磁石、９・・・コイル、１０・・・コアベース
、１１・・・アマチュア。FIG. 1 is a configuration diagram showing an embodiment of the print head of the present invention;
2 is a side view showing the arrangement relationship between the print head shown in FIG. 1 and the platen 3, and FIG. 3 is a front view of the pin guide shown in FIG. 1. l...Coil spring, 2...Cap, 3...
・Platen, 4...Wire, 5...Pin guide, 6
...Wire guide, 7...Amateur guide, 8.
...Permanent magnet, 9...Coil, 10...Core base, 11...Amateur.

Claims (1)

【特許請求の範囲】[Claims] コイルスプリング駆動のスプリングチャージ式の印字ヘ
ッドにおいて、アマチュア下部にあるコイルスプリング
のスティフネス（ｓｔｉｆｆｎｅｓｓ）を各ピン番号別
に設定して実装する手段を備えて成ることを特徴とする
印字ヘッド。A spring-charged print head driven by a coil spring, comprising means for setting and mounting the stiffness of the coil spring at the lower part of the armature for each pin number.
JP32067287A 1987-12-18 1987-12-18 Printing head Pending JPH01160650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32067287A JPH01160650A (en) 1987-12-18 1987-12-18 Printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32067287A JPH01160650A (en) 1987-12-18 1987-12-18 Printing head

Publications (1)

Publication Number Publication Date
JPH01160650A true JPH01160650A (en) 1989-06-23

Family

ID=18124039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32067287A Pending JPH01160650A (en) 1987-12-18 1987-12-18 Printing head

Country Status (1)

Country Link
JP (1) JPH01160650A (en)

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