JPH0730367Y2 - Hammer mechanism - Google Patents
Hammer mechanismInfo
- Publication number
- JPH0730367Y2 JPH0730367Y2 JP6110889U JP6110889U JPH0730367Y2 JP H0730367 Y2 JPH0730367 Y2 JP H0730367Y2 JP 6110889 U JP6110889 U JP 6110889U JP 6110889 U JP6110889 U JP 6110889U JP H0730367 Y2 JPH0730367 Y2 JP H0730367Y2
- Authority
- JP
- Japan
- Prior art keywords
- printing
- hammer
- striking force
- height
- hammer mechanism
- 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 - Lifetime
Links
Landscapes
- Impact Printers (AREA)
Description
【考案の詳細な説明】 〔考案の利用分野〕 本考案は、印刷ハンマを複数個備えたハンマ機構部に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Utilization of the Invention] The present invention relates to a hammer mechanism section having a plurality of printing hammers.
従来例を第４図により説明する。 A conventional example will be described with reference to FIG.
第４図は、従来のハンマ機構部１を示す上面図である。FIG. 4 is a top view showing the conventional hammer mechanism section 1.
ハンマ機構部１は印刷ハンマ10を複数個備え、マグネッ
トの磁力により印刷ハンマ10を通常弾性変形させて吸引
しておき印刷指令のあった場合にハンマコイル３に電流
を流して印刷ハンマ10を飛び出させている。The hammer mechanism unit 1 is provided with a plurality of printing hammers 10. Normally, the printing hammers 10 are elastically deformed and attracted by the magnetic force of a magnet, and when there is a print command, a current is passed through the hammer coil 3 to cause the printing hammers 10 to pop out. ing.
以上のような構成のハンマ機構部において印刷指令が入
った場合、印刷ハンマ10が作動することによりマグネッ
トを含むハンマ機構部１の磁気抵抗が増加し周辺桁へ悪
影響を及ぼすことが知られている。It is known that when a print command is input to the hammer mechanism section having the above-described structure, the print hammer 10 operates to increase the magnetic resistance of the hammer mechanism section 1 including the magnet, which adversely affects the peripheral digits. .
具体的には単桁で作動する時に比較して、印刷ハンマ10
の保持力が磁束量の増大と共に増大し印刷品質上好まし
くない打撃力の変化が表われる。これは第２図に示す如
く、中央部において、影響が大きく正常状態より打撃力
が低下するという不具合となる。この結果、印刷品質
は、左右が濃く、中央部が淡いという濃淡差が発生する
こととなり甚だ不都合である。Specifically, compared to when operating with a single digit, the printing hammer 10
The holding force of the magnetic field increases with an increase in the amount of magnetic flux, and a change in the striking force, which is unfavorable for print quality, appears. As shown in FIG. 2, this causes a problem that the impact is great in the central portion and the striking force is lower than in the normal state. As a result, the print quality is deeply inconvenient because the left and right sides are dark and the center is light.
本考案の目的は、上記した従来技術の欠点をなくし、全
桁に渡り印刷ハンマを駆動した場合においても、印刷品
質を常に安定させておくことである。An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to always keep the print quality stable even when the printing hammer is driven over all digits.
本考案は、ハンマストロークを変化させると打撃力も変
化するという点に着目し、磁気交渉による濃淡差をなく
すよう印刷ピンの高さを工夫したものである。In the present invention, the height of the printing pin is devised so that the striking force also changes when the hammer stroke is changed, and the difference in shade due to magnetic negotiation is eliminated.
本考案における実施例を第１図に示す。第１図において
中央部の印刷ピン２に対して両端部の印刷ピン２の高さ
を第２図のグラフで両端の打撃力の大きい分だけ両端に
近づくに従って除々に低くしてゆく構成とする。（最端
部の印刷ピン２は中央部の印刷ピン２に比較してｌ−
ｌ′分低くなる）すなわち第３図に示す如くギャップが
l1からl2に広くなると打撃力もf1からf2と低下する。す
なわち印刷ピン２の高さを低くすることはギャップが広
くなることであり、これは打撃力を低下させることであ
る。An embodiment of the present invention is shown in FIG. In FIG. 1, the height of the printing pin 2 at both ends is lower than that of the printing pin 2 at the central portion in the graph of FIG. 2 as the striking force at both ends increases toward the ends. . (The printing pin 2 at the end is 1-
1'm lower), that is, as shown in FIG.
As the power increases from l 1 to l 2 , the striking force also decreases from f 1 to f 2 . That is, lowering the height of the printing pin 2 means widening the gap, which means lowering the striking force.
従って、第２図の両端の打撃力を均等にするべく打撃力
のオーバ分に見合った印刷ピン２の高さに低くすればい
いわけである。Therefore, it is sufficient to lower the height of the printing pin 2 commensurate with the excess of the striking force in order to equalize the striking force at both ends in FIG.
これにより第２図の打撃力のグラフは平坦となり打撃力
の均一化を図ることができる。As a result, the striking force graph of FIG. 2 becomes flat, and the striking force can be made uniform.
以上の如く印刷ピン２の高さを変化させることにより濃
淡差のない安定した印刷品質を得ることが可能となる。By changing the height of the printing pin 2 as described above, it is possible to obtain stable print quality with no difference in density.
本考案によれば、ギャップの変化を印刷ピンにより行う
こととしたが、対向するプラテンで行ってもよい（プラ
テンの場合も両端のギャップを広くする方向である）。According to the present invention, the change of the gap is performed by the printing pin, but it may be performed by the opposing platens (in the case of the platen, the gaps at both ends are also widened).
また、印刷ピン２の高さを同じとし、印刷ピンの吸着し
ているヨーク面を中央部と両端部で変化させてもよい。Further, the heights of the printing pins 2 may be the same, and the yoke surface on which the printing pins are attracted may be changed between the central portion and both end portions.
本考案によれば全桁印刷しても、磁気干渉に見合う打撃
力の低下をギャップ変化により補正することが可能とな
るので常に安定した印刷品質を得ることができる。According to the present invention, even if all the digits are printed, it is possible to correct the reduction of the striking force commensurate with the magnetic interference by changing the gap, so that it is possible to always obtain stable print quality.
第１図は本考案によるハンマ機構部を示す上面図、第２
図は従来例によるハンマ位置と打撃力の関係を示すグラ
フ、第３図はギャップと打撃力の関係を示すグラフ、第
４図は従来例によるハンマ機構部を示す上面図である。 図において、１はハンマ機構部、２は印刷ハンマ、３は
ハンマコイル、10は従来例における印刷ハンマである。FIG. 1 is a top view showing a hammer mechanism portion according to the present invention, and FIG.
FIG. 4 is a graph showing the relationship between the hammer position and the striking force according to the conventional example, FIG. 3 is a graph showing the relationship between the gap and the striking force, and FIG. 4 is a top view showing the hammer mechanism portion according to the conventional example. In the figure, 1 is a hammer mechanism part, 2 is a printing hammer, 3 is a hammer coil, and 10 is a conventional printing hammer.
Claims (1)
に沿い複数個並べて設け、永久磁石を含む磁気回路によ
り前記印刷ハンマを印刷待機位置まで弾性変形させて、
印刷指令によりハンマコイルに電流を流して弾性エネル
ギーにより印刷させるハンマ機構部において、行方向中
央部の印刷ピンの高さを行方向両端部の印刷ピンの高さ
より高くしたことを特徴とするハンマ機構部。1. A plurality of printing hammers provided with printing pins are arranged side by side in the row direction, and the printing hammers are elastically deformed to a printing standby position by a magnetic circuit including a permanent magnet,
In a hammer mechanism section in which an electric current is applied to a hammer coil in response to a print command to print by elastic energy, the height of the printing pin at the center in the row direction is made higher than the height of the printing pins at both ends in the row direction. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6110889U JPH0730367Y2 (en) | 1989-05-26 | 1989-05-26 | Hammer mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6110889U JPH0730367Y2 (en) | 1989-05-26 | 1989-05-26 | Hammer mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH031045U JPH031045U (en) | 1991-01-08 |
| JPH0730367Y2 true JPH0730367Y2 (en) | 1995-07-12 |
Family
ID=31589066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6110889U Expired - Lifetime JPH0730367Y2 (en) | 1989-05-26 | 1989-05-26 | Hammer mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730367Y2 (en) |
-
1989
- 1989-05-26 JP JP6110889U patent/JPH0730367Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH031045U (en) | 1991-01-08 |
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