JPH0239388B2 - - Google Patents
Info
- Publication number
- JPH0239388B2 JPH0239388B2 JP56165060A JP16506081A JPH0239388B2 JP H0239388 B2 JPH0239388 B2 JP H0239388B2 JP 56165060 A JP56165060 A JP 56165060A JP 16506081 A JP16506081 A JP 16506081A JP H0239388 B2 JPH0239388 B2 JP H0239388B2
- Authority
- JP
- Japan
- Prior art keywords
- printing
- magnetic
- armature
- magnetic path
- magnetic flux
- 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
- 230000004907 flux Effects 0.000 claims description 37
- 230000005284 excitation Effects 0.000 claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 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
Description
【発明の詳細な説明】
本発明はワイヤードツトプリンタに用いられる
印字ヘツドに係り特に磁気特性を改良した印字ヘ
ツドに関す。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a print head used in a wire dot printer, and more particularly to a print head with improved magnetic properties.
印字ワイヤーによつて形成されたドツトの集合
により文字等のパターン形成を行なうプリンタは
文字種類が多く、またコピーを必要とする用途に
極めて好適で経済的である。印字品質の向上のた
めには、ワイヤーを細く、また数を増して、各独
立に作動できることが必要となる。またコンピユ
ータ端末機としての用途が拡大している為、高速
作動することが要請されている。近来この種のプ
リンタ用印字ヘツドは小型化高速化及び消費電力
の低減化の観点から釈放型印字マグネツトが用い
られている。 Printers that form patterns such as characters by a collection of dots formed by printing wires can produce many types of characters, and are extremely suitable and economical for applications requiring copying. In order to improve printing quality, it is necessary to make the wires thinner and increase the number of wires so that each wire can operate independently. In addition, as its use as a computer terminal is expanding, it is required to operate at high speed. Recently, open type print magnets have been used in print heads for printers of this type from the viewpoints of smaller size, higher speed, and lower power consumption.
第１図〜第６図を参照して従来の方法を説明す
ると、第１図は本発明が適用されるワイヤードツ
トプリンタを例示する平面図、第２図は第１図の
印字ヘツドの印字マグネツト部を示す斜視図、第
３図は第２図の側面図、第４図は従来方法による
印字ヘツドを例示する側面図、第５図は第４図の
アマチユア部の正面図、第６図は第４図のＢ方向
矢視展開図である。 The conventional method will be explained with reference to FIGS. 1 to 6. FIG. 1 is a plan view illustrating a wire dot printer to which the present invention is applied, and FIG. 3 is a side view of FIG. 2, FIG. 4 is a side view illustrating a print head according to the conventional method, FIG. 5 is a front view of the armature section of FIG. 4, and FIG. 6 is a side view of FIG. FIG. 4 is a developed view taken in the direction of arrow B in FIG. 4;
図中、１，１−１〜１−３はコア、２，２−１
〜２−３はコイル、３，３−１〜３−３はアマチ
ユア、３ａは保持部、４は印字ワイヤー、５はガ
イドフレーム、５ａはピンガイド、５ｂはピン
孔、６は支持ばね、７ａ，７ｂ，７ｂ−１〜７ｂ
−３は磁路部、７ｃは側磁路部、８は永久磁石、
９はフレーム、１０はプラテン、１１は印字用
紙、１２ａ，１２ｂはスプロケツト、１３はキヤ
リア、１５はガイドシヤフト、１６は送りねじ、
１７はベルト、１９はモータ、２０はインクリボ
ンカセツト、２０ａはインクリボン、２１は印字
ヘツド、２１ａ（第６図に２１ａ−１〜２１ａ−
３で示す）は印字マグネツト、I1−１〜I1−３は
吸引磁束、I2−１〜I2−３は励磁磁束、I3−１，
I3−３は干渉磁束を示す。 In the figure, 1,1-1 to 1-3 are cores, 2,2-1
~2-3 is a coil, 3, 3-1 to 3-3 are armatures, 3a is a holding part, 4 is a printing wire, 5 is a guide frame, 5a is a pin guide, 5b is a pin hole, 6 is a support spring, 7a , 7b, 7b-1 to 7b
-3 is a magnetic path part, 7c is a side magnetic path part, 8 is a permanent magnet,
9 is a frame, 10 is a platen, 11 is a printing paper, 12a, 12b are sprockets, 13 is a carrier, 15 is a guide shaft, 16 is a feed screw,
17 is a belt, 19 is a motor, 20 is an ink ribbon cassette, 20a is an ink ribbon, 21 is a print head, 21a (21a-1 to 21a- in FIG. 6)
3) is a printing magnet, I 1 -1 to I 1 -3 are attraction magnetic fluxes, I 2 -1 to I 2 -3 are exciting magnetic fluxes, I 3 -1,
I 3 -3 indicates interference magnetic flux.
ワイヤードツトプリンタは第１図に示すよう
に、フレーム９を有しており、フレーム９にはプ
ラテン１０が回転自在に支持されている。プラテ
ン１０には印字用紙１１が巻き掛けられており、
印字用紙１１はスプロケツト１２ａ，１２ｂ等に
より図中矢印Ａ方向に送られる。一方プラテン１
０の前面、即ち図中下方には、キヤリア１３がプ
ラテン１０と平行に設けられたガイドシヤフト１
５に摺動自在に嵌合しており、キヤリア１３は同
様にプラテン１０と平行に設けられた送りネジ１
６と螺合している。送りネジ１６はベルト１７等
を介してモータ１９に接続されており、従つて送
りネジ１６はモータ１９の正逆回転によつて、キ
ヤリア１３を図中矢印Ｃ，Ｄ方向に移動させるこ
とができる。キヤリア１３にはインクリボンカセ
ツト２０が搭載されており、カセツト２０には無
端状のインクリボン２０ａがその一部をプラテン
１０側に露出させた形で内蔵されている。また、
キヤリア１３には印字ヘツド２１がインクリボン
カセツト２０に囲まれた形で設置されており、印
字ヘツド２１にはドツトによつて印字を形成させ
るために複数個の印字マグネツト２１ａが設けら
れている。 As shown in FIG. 1, the wire dot printer has a frame 9, on which a platen 10 is rotatably supported. A printing paper 11 is wrapped around the platen 10.
The printing paper 11 is sent in the direction of arrow A in the figure by sprockets 12a, 12b, etc. On the other hand, platen 1
0, that is, at the bottom in the figure, there is a guide shaft 1 with a carrier 13 provided parallel to the platen 10.
5, and the carrier 13 is slidably fitted into the feed screw 1, which is also provided parallel to the platen 10.
It is screwed together with 6. The feed screw 16 is connected to a motor 19 via a belt 17 or the like, and therefore, the feed screw 16 can move the carrier 13 in the directions of arrows C and D in the figure by rotating the motor 19 in forward and reverse directions. . An ink ribbon cassette 20 is mounted on the carrier 13, and an endless ink ribbon 20a is built into the cassette 20 with a portion thereof exposed to the platen 10 side. Also,
A print head 21 is installed in the carrier 13 surrounded by an ink ribbon cassette 20, and the print head 21 is provided with a plurality of print magnets 21a for forming prints by dots.
印字マグネツト２１ａは第２図及び第３図に示
すように、コア１にコイル２が巻かれており、コ
ア１に当接するようにアマチユア３が配置されて
いる。アマチユア３には先端に印字ワイヤー４を
固着した保持部３ａが取付けられており、またア
マチユア３は支持ばね６によつて弾性的に支持さ
れ、支持ばね６の一端は磁路部７ａに固定されて
いる。磁路部７ａ，７ｂはその間に磁石８をはさ
み、且つ、コア１とアマチユア３をコ字形に囲む
ように配置されている。 As shown in FIGS. 2 and 3, the printing magnet 21a has a core 1 wound with a coil 2, and an armature 3 arranged so as to come into contact with the core 1. A holding part 3a having a printing wire 4 fixed to the tip thereof is attached to the armature 3, and the armature 3 is elastically supported by a support spring 6, and one end of the support spring 6 is fixed to a magnetic path part 7a. ing. The magnetic path portions 7a and 7b are arranged so as to sandwich the magnet 8 therebetween and surround the core 1 and the armature 3 in a U-shape.
また磁路部７ａからアマチユア３の両側にギヤ
ツプをおいて係合する側磁路部７Ｃが張出してい
る。従つて印字マグネツト２１ａが作動していな
い時は、永久磁石８の磁力によつてアマチユア３
はコア１に吸着している。 Further, side magnetic path portions 7C protrude from the magnetic path portion 7a and engage with both sides of the armature 3 with a gap. Therefore, when the printing magnet 21a is not operating, the armature 3 is moved by the magnetic force of the permanent magnet 8.
is adsorbed to core 1.
このような構成を有するので、いま印字ヘツド
２１の印字マグネツト２１ａのコイル２に永久磁
石８のNS極とコア１の極が反対になるように電
流を流すと、コア１は電磁石となり永久磁石８の
吸引力を打消すように働き、支持ばね６によつて
蓄えられたエネルギによつてアマチユア３は磁路
部７ａ側、側ち第３図において上方に飛んで行
く。すると印字ワイヤー４も図中矢印Ｅ方向に突
出し、第１図に示すプラテン１０上の印字用紙１
１にインクリボン２０ａ介して衝突し印字が行な
われる。コイル２への通電を停止すると、コア１
の電磁力も消失し、アマチユア３は磁石８の吸引
力によつて、第３図中矢印Ｆ方向に運動し、コア
１に吸着されて、待機位置にもどる。このように
して印字ヘツド２１内の複数の印字マグネツト２
１ａを選択的に駆動しつつ、第１図に示すように
印字ヘツド２１をキヤリア１３と共に矢印Ｃ，Ｄ
方向に移動させて印字用紙１１への印字動作を行
なう。 With this configuration, if current is applied to the coil 2 of the printing magnet 21a of the printing head 21 so that the NS pole of the permanent magnet 8 and the pole of the core 1 are opposite to each other, the core 1 becomes an electromagnet and the permanent magnet 8 The armature 3 works to cancel the attractive force of the support spring 6, and by the energy stored by the support spring 6, the armature 3 flies upward toward the magnetic path section 7a side, ie, upward in FIG. Then, the printing wire 4 also protrudes in the direction of arrow E in the figure, and the printing paper 1 on the platen 10 shown in FIG.
1 through the ink ribbon 20a, and printing is performed. When power to coil 2 is stopped, core 1
The electromagnetic force also disappears, and the armature 3 moves in the direction of arrow F in FIG. 3 due to the attractive force of the magnet 8, is attracted to the core 1, and returns to the standby position. In this way, the plurality of print magnets 2 in the print head 21
1a, the printing head 21 and carrier 13 are moved along arrows C and D as shown in FIG.
printing operation on the printing paper 11.
かゝる印字ヘツド２１において、印字マグネツ
ト２１ａは第４図に示すように中心部に印字ワイ
ヤー４を集中させており、中央部に突き出したガ
イドフレーム５の先端にあるピンガイド５ａのピ
ン孔５ｂによつて印字ワイヤー４がガイドされて
いる。そして印字マグネツト２１ａの電磁石は第
５図に示すように磁路部７ｂと共に放射状に配列
している。 In such a printing head 21, the printing magnet 21a has the printing wire 4 concentrated in the center as shown in FIG. The printing wire 4 is guided by. The electromagnets of the printing magnet 21a are arranged radially together with the magnetic path section 7b as shown in FIG.
このように配列している印字マグネツト２１ａ
は複数の印字ワイヤー４を同時に駆動させること
があるが、特に隣同志が同時に駆動する場合には
電磁石が同時に励磁されると各電磁石の励磁磁束
が相互に流れ込むことにより磁気干渉を生ずる。
第６図でこれを説明する。 The printing magnets 21a arranged in this way
Although a plurality of printing wires 4 may be driven at the same time, especially when adjacent wires are driven at the same time, if the electromagnets are excited at the same time, the excitation magnetic flux of each electromagnet flows into each other, causing magnetic interference.
This will be explained in FIG.
まず、印字マグネツト２１ａ−１，２１ａ−２
が同時駆動する時、駆動のためにコイル２−１，
２−２に電流を流すと、矢印線で示す永久磁石８
による、吸引磁束I1−１，I1−２に対して逆方向
に矢印点線で示す励磁磁束I2−１，I2−２が発生
する。但し励磁磁束I2−２は図示していない。そ
してこの励磁磁束I2−１，I2−２が近接する磁性
部材に一部流入し特に隣接する電磁石内には強い
干渉磁束I3−２，I3−１となる。また印字マグネ
ツト２１ａ−２，２１ａ−３が同時駆動する場合
も同様に干渉磁束I3−３，I3−２となる。こゝで
干渉磁束I3−２は図示していない。この磁束の方
向は吸引磁束I1−１〜I1−３と同方向であるた
め、一緒になつて吸引力を強める作用をなし、従
つて励磁磁束I2−１〜I2−３が多くならないとア
マチユア３−１〜３−３を釈放しないという現象
が起き、電流がふえるばかりでなく印字ワイヤー
４の駆動速度が低下するので高速度が得にくいと
いう欠点がある。従つてプリンタの高速化の要請
から印字マグネツト２１ａの磁気特性を改善する
ことが望まれていた。 First, the printing magnets 21a-1, 21a-2
When the coils 2-1 and 2-1 are driven simultaneously, the coils 2-1 and
When a current is applied to 2-2, the permanent magnet 8 shown by the arrow line
Accordingly, excitation magnetic fluxes I 2 -1 and I 2 -2 shown by dotted arrow lines are generated in the opposite direction to the attractive magnetic fluxes I 1 -1 and I 1 -2. However, the excitation magnetic flux I 2 -2 is not shown. Part of the excitation magnetic fluxes I 2 -1 and I 2 -2 flows into the adjacent magnetic members, resulting in particularly strong interference magnetic fluxes I 3 -2 and I 3 -1 within the adjacent electromagnets. Similarly, when the printing magnets 21a-2 and 21a-3 are driven simultaneously, the interference magnetic fluxes I 3 -3 and I 3 -2 are generated. Here, the interference magnetic flux I 3 -2 is not shown. Since the direction of this magnetic flux is the same as that of the attracting magnetic fluxes I 1 -1 to I 1 -3, they work together to strengthen the attracting force, and therefore the exciting magnetic fluxes I 2 -1 to I 2 -3 are large. Otherwise, a phenomenon occurs in which the armatures 3-1 to 3-3 are not released, which not only increases the current but also reduces the driving speed of the printing wire 4, making it difficult to obtain a high speed. Therefore, in order to increase the speed of printers, it has been desired to improve the magnetic properties of the printing magnet 21a.
本発明の目的は上記の欠点を解決するためのも
ので、印字マグネツト間の磁気干渉を減少させ駆
動速度を改善した印字ヘツドを提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to overcome the above-mentioned drawbacks and to provide a print head which reduces magnetic interference between print magnets and improves drive speed.
本発明は磁路部７ａの一端には、複数の印字ワ
イヤの夫々の配設位置に対応して、夫々一対の側
磁路部７ｃが植立され、この側磁路部間には、支
持ばね６で磁路部７ａに支持され、かつ印字ワイ
ヤ保持部３ａの取付けられたアマチユア３が配置
され、磁路部の他端は継鉄及び永久磁石８を介し
て他の磁路部７ｂの一端と結合され、その他端上
部には、アマチユアに対応する位置にコイル２と
コア３とよりなる印字マグネツトが、コアの他端
がアマチユアに対面する如く取付けられ、アマチ
ユアは永久磁石よりの吸引磁束でコアに吸引さ
れ、印字マグネツトよりの励磁磁束で解放される
如き構造において、互いに隣接する印字マグネツ
トのコイル間であつて、側磁路部よりの吸引磁束
には影響を与えず、励磁磁束を通すべき部分は磁
性材を含んだ注型剤で充填されてなることを特徴
とする印字ヘツドである。かくすることにより磁
気干渉の影響を減少させることができる。 In the present invention, a pair of side magnetic path portions 7c are installed at one end of the magnetic path portion 7a, corresponding to the respective arrangement positions of a plurality of printing wires, and between these side magnetic path portions, a support is provided. An armature 3 supported by a magnetic path section 7a with a spring 6 and attached with a printing wire holding section 3a is disposed, and the other end of the magnetic path section is connected to another magnetic path section 7b via a yoke and a permanent magnet 8. A printing magnet consisting of a coil 2 and a core 3 is connected to one end and is attached to the upper part of the other end at a position corresponding to the armature so that the other end of the core faces the armature, and the armature receives magnetic flux attracted by the permanent magnet. In a structure in which the magnetic flux is attracted to the core and released by the excitation magnetic flux from the printing magnet, between the coils of the printing magnets that are adjacent to each other, the excitation magnetic flux is The part to be passed through is a printing head characterized by being filled with a casting agent containing a magnetic material. By doing so, the influence of magnetic interference can be reduced.
以下本発明による一実施例を第７図及び第８図
を参照して説明する。 An embodiment of the present invention will be described below with reference to FIGS. 7 and 8.
第７図は本発明による実施例を示す側面図、第
８図は第７図のB′方向矢視展開図である。図中、
２２は充填磁性材、I3−１，I3−３′は干渉磁束
を示す。 FIG. 7 is a side view showing an embodiment according to the present invention, and FIG. 8 is a developed view taken in the direction of arrow B' in FIG. In the figure,
22 is a filling magnetic material, and I 3 -1 and I 3 -3' are interference magnetic fluxes.
また第２図〜第６図と同一個所は同符号で示し
ている。 In addition, the same parts as in FIGS. 2 to 6 are indicated by the same reference numerals.
第７図及び第８図に示すように印字マグネツト
２１ａ−１，２１ａ−２，２１ａ−３の間にコア
２及び支持ばね６の作動をさまたげないように充
填磁性材２２を注入充填してある（第７図に１点
鎖線また第８図に斜線で示している）。このよう
な構成を有するので、いま印字マグネツト２１ａ
−１，２１ａ−２が同時駆動する場合について磁
束の状態を説明すると、図において矢印線で示し
た永久磁石８による吸引磁束I1−１，I1−２があ
り、コイル２−１，２−２の通電によつて図中矢
印点線で示した励磁磁束I2−１，I2−２が発生す
る。ここで励磁磁束I2−２は図に示していない。
この励磁磁束I2−１，I2−２は近接する磁性部材
に磁束が流入するが、印字マグネツト２１ａ−
１，２１ａ−２の間に充填磁性材２２があるた
め、大部分の干渉磁束I3−１′，I3−２′（I3−
２′は図に示していない。）がこれに吸収され、隣
の電磁石に及ぶ磁束は少ないものとなり従つて干
渉磁束I3−１，I3−２（I3−２は図に示していな
い）は少なくなる。印字マグネツト２１ａ−２，
２１ａ−３の同時駆動の場合も同様である。 As shown in FIGS. 7 and 8, a magnetic material 22 is injected and filled between the printing magnets 21a-1, 21a-2, and 21a-3 so as not to hinder the operation of the core 2 and the support spring 6. (Indicated by dash-dotted lines in FIG. 7 and diagonal lines in FIG. 8). Since it has such a configuration, now the printing magnet 21a
-1 and 21a-2 are driven simultaneously. To explain the state of magnetic flux when the coils 2-1 and 21a-2 are driven at the same time, there are magnetic fluxes I 1 -1 and I 1 -2 attracted by the permanent magnet 8 shown by arrows in the figure, and the coils 2-1 and 2 -2 generates excitation magnetic fluxes I 2 -1 and I 2 -2 shown by dotted arrow lines in the figure. Here, the exciting magnetic flux I 2 -2 is not shown in the figure.
These excitation magnetic fluxes I 2 -1 and I 2 -2 flow into adjacent magnetic members, but the magnetic fluxes I 2 -1 and I 2 -2 flow into the magnetic members adjacent to each other, but the magnetic fluxes I 2 -1 and I 2 -2 flow into the magnetic members adjacent to each other.
1 and 21a-2, most of the interference magnetic flux I 3 -1', I 3 -2' (I 3 -
2' is not shown in the figure. ) is absorbed by this, and the magnetic flux reaching the adjacent electromagnet becomes small, so that the interfering magnetic fluxes I 3 -1, I 3 -2 (I 3 -2 is not shown in the figure) become small. Printing magnet 21a-2,
The same applies to the simultaneous driving of 21a-3.
以上説明したように本発明によれば、同時駆動
する時の印字マグネツト相互間に生ずる磁気干渉
が減少し、電磁石コイルに流れる電流を減少で
き、印字ヘツドの動作速度を速くできるので、プ
リンタの高速化低電力化をはかることができ、か
つ印字マグネツト間の機械的結合も強固となり、
しかも印字ワイヤの復旧によるアマチユアがコア
に突当る際の振動もこの注型剤の存在によつて低
減されるという効果がある。 As explained above, according to the present invention, the magnetic interference that occurs between printing magnets when they are driven simultaneously can be reduced, the current flowing through the electromagnetic coil can be reduced, and the operating speed of the printing head can be increased, so that the printer can operate at high speeds. In addition, the mechanical bond between the printing magnets is also strong,
Furthermore, the presence of this casting agent has the effect of reducing vibrations caused when the armature hits the core due to restoration of the printing wire.
第１図は本発明が適用されるワイヤードツトプ
リンタを例示する平面図、第２図は第１図の印字
ヘツドの印字マグネツト部を示す斜視図、第３図
は第２図の側面図、第４図は従来方法による印字
ヘツドを例示する側面図、第５図は第４図のアマ
チユア部の正面図、第６図は第４図のＡ方向矢視
展開図、第７図は本発明による実施例を示す側面
図、第８図は第７図のB′方向矢視展開図である。
図において、１，１−１，１−２はコア、２，
２−１〜２−３はコイル、３，３−１〜３−３は
アマチユア、３ａは保持部、４は印字ワイヤー、
６は支持ばね、７ａ，７ｂ，７ｂ−１〜７ｂ−３
は磁路部、７ｃは側磁路部、８は永久磁石、２１
ａ（２１ａ−１〜２１ａ−３）は印字マグネツト、
２２は充填磁性材、I1−１〜I1−３は吸引磁束、
I2−１，I2−３は励磁磁束、I3−１，I3−１′，I3
−３，I3−３′は干渉磁束を示す。
FIG. 1 is a plan view illustrating a wire dot printer to which the present invention is applied, FIG. 2 is a perspective view showing the print magnet section of the print head in FIG. 1, FIG. 3 is a side view of FIG. 2, and FIG. 5 is a front view of the armature section of FIG. 4, FIG. 6 is a developed view in the direction of arrow A in FIG. 4, and FIG. 7 is an embodiment according to the present invention. A side view showing an example, and FIG. 8 is a developed view in the direction of arrow B' in FIG. 7. In the figure, 1, 1-1, 1-2 are cores, 2,
2-1 to 2-3 are coils, 3, 3-1 to 3-3 are amateurs, 3a is a holding part, 4 is a printing wire,
6 is a support spring, 7a, 7b, 7b-1 to 7b-3
is a magnetic path part, 7c is a side magnetic path part, 8 is a permanent magnet, 21
a (21a-1 to 21a-3) are printing magnets,
22 is a filling magnetic material, I 1 -1 to I 1 -3 are attraction magnetic fluxes,
I 2 -1, I 2 -3 are excitation magnetic fluxes, I 3 -1, I 3 -1', I 3
-3, I 3 -3' indicates interference magnetic flux.
Claims (1)
夫々の配設位置に対応して、夫々一対の側磁路部
７ｃが植立され、この側磁路部間には、支持ばね
６で磁路部７ａに支持され、かつ印字ワイヤ保持
部３ａの取付けられたアマチユア３が配置され、
磁路部の他端は継鉄及び永久磁石８を介して他の
磁路部７ｂの一端と結合され、その他端上部に
は、アマチユアに対応する位置にコイル２とコア
３とよりなる印字マグネツトが、コアの他端がア
マチユアに対面する如く取付けられ、アマチユア
は永久磁石よりの吸引磁束でコアに吸引され、印
字マグネツトよりの励磁磁束で解放される如き構
造において、互いに隣接する印字マグネツトのコ
イル間であつて、側磁路部よりの吸引磁束には影
響を与えず、励磁磁束を通すべき部分は磁性材を
含んだ注型剤で充填されてなることを特徴とする
印字ヘツド。1 A pair of side magnetic path portions 7c are installed at one end of the magnetic path portion 7a, corresponding to the respective arrangement positions of the plurality of printing wires, and a support spring 6 is installed between the side magnetic path portions. An armature 3 supported by the magnetic path part 7a and having a printing wire holding part 3a attached thereto is disposed;
The other end of the magnetic path section is connected to one end of another magnetic path section 7b via a yoke and a permanent magnet 8, and a printed magnet consisting of a coil 2 and a core 3 is placed above the other end at a position corresponding to the armature. However, in a structure in which the other end of the core is installed so as to face the armature, and the armature is attracted to the core by the attraction magnetic flux from the permanent magnet and released by the excitation magnetic flux from the printing magnet, the coils of the printing magnets adjacent to each other are A print head characterized in that a portion between the print head and the magnetic flux through which the excitation magnetic flux should pass without affecting the magnetic flux attracted by the side magnetic path is filled with a casting agent containing a magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16506081A JPS5865672A (en) | 1981-10-16 | 1981-10-16 | Print head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16506081A JPS5865672A (en) | 1981-10-16 | 1981-10-16 | Print head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5865672A JPS5865672A (en) | 1983-04-19 |
| JPH0239388B2 true JPH0239388B2 (en) | 1990-09-05 |
Family
ID=15805084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16506081A Granted JPS5865672A (en) | 1981-10-16 | 1981-10-16 | Print head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5865672A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194870A (en) * | 1983-04-20 | 1984-11-05 | Citizen Watch Co Ltd | Spring energy accumulating type dot printing head |
| EP0157624A3 (en) * | 1984-03-30 | 1987-07-29 | Nec Home Electronics, Ltd. | Printer head bank and method of manufacturing the same |
| JPS612569A (en) * | 1984-06-15 | 1986-01-08 | Matsushita Electric Ind Co Ltd | Printing head for wire dot printer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342711B2 (en) * | 1975-10-30 | 1978-11-14 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759335Y2 (en) * | 1976-09-13 | 1982-12-18 |
-
1981
- 1981-10-16 JP JP16506081A patent/JPS5865672A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342711B2 (en) * | 1975-10-30 | 1978-11-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5865672A (en) | 1983-04-19 |
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