JPS62244658A - Printing head - Google Patents
Printing headInfo
- Publication number
- JPS62244658A JPS62244658A JP8884486A JP8884486A JPS62244658A JP S62244658 A JPS62244658 A JP S62244658A JP 8884486 A JP8884486 A JP 8884486A JP 8884486 A JP8884486 A JP 8884486A JP S62244658 A JPS62244658 A JP S62244658A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic circuit
- magnetic
- yoke
- spring
- printing
- 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 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000005516 engineering process Methods 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
Landscapes
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、−ドツトインパクトプリンタの印字ヘッド、
特に、その磁気回路部分の形状に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides: - a print head for a dot impact printer;
In particular, it concerns the shape of the magnetic circuit portion.
従来、印字ヘッドの磁気回路の断面は、四角い形状をし
ていた。Conventionally, the cross section of the magnetic circuit of a print head has been square in shape.
上述した従来の磁気回路は、ワイヤ駆動時における磁束
変化時に、磁気回路内にうず電流が流れやすくなり、従
って、磁束の変化が遅くなる、ワイヤの応答周波数が遅
くなる、印字ヘッドの発熱が大きい等の欠点がある。In the conventional magnetic circuit described above, when the magnetic flux changes when the wire is driven, eddy current tends to flow in the magnetic circuit, resulting in slow changes in magnetic flux, slow response frequency of the wire, and large heat generation in the print head. There are drawbacks such as.
本発明は、磁気回路にスロットを有している。 The present invention has a slot in the magnetic circuit.
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、本発明の実施例の概念図を示し、第２図は第
１図におけるＡ−Ａ’断面の断面図を示す。FIG. 1 shows a conceptual diagram of an embodiment of the present invention, and FIG. 2 shows a cross-sectional view taken along the line AA' in FIG.
第１図における印字ヘッドの磁気回路は、磁石５、ヨー
クｌ、ハンマスプリング３により構成されている、印字
動作を行なう時はコイル２に電流を流して％磁気回路の
磁束を打ち消すことにより、ハンマスプリング３を吸引
する力を打ち消し、スプリングの上端がヨーク面から高
速で離れることにより、印字ワイヤ４が飛び出し、印字
動作を行なう。The magnetic circuit of the print head in Fig. 1 is composed of a magnet 5, a yoke l, and a hammer spring 3. When performing a printing operation, a current is applied to the coil 2 to cancel out the magnetic flux of the magnetic circuit. By canceling the suction force of the spring 3 and causing the upper end of the spring to separate from the yoke surface at high speed, the printing wire 4 jumps out and performs a printing operation.
コイル２に通電した時、磁束が急激に０になればそれだ
け早くハンマスプリング３が動作できるが、磁速変化時
に磁気回路内にうず電流が発生して、磁速の変化をさま
たげようとする。従って、第２図に示す断面図のように
ヨーク１にスロットを設け、うず電流を流れにくくする
。When the coil 2 is energized, the sooner the magnetic flux becomes zero, the faster the hammer spring 3 can operate, but when the magnetic speed changes, eddy currents are generated in the magnetic circuit and try to block the change in magnetic speed. Therefore, as shown in the cross-sectional view of FIG. 2, slots are provided in the yoke 1 to make it difficult for eddy current to flow.
以上説明したように、本発明は、磁気回路にスロットを
設けることにより、うず電流を軽減して、印字ワイヤの
応答周波数を上げると共に、印字ヘッドの発熱を軽減で
きる効果がある。As described above, the present invention has the effect of reducing eddy current, increasing the response frequency of the print wire, and reducing heat generation of the print head by providing slots in the magnetic circuit.
第１図は本発明の概念図、第２図は第１図のＡ−Ａ’断
面図を示す。
１・・・・・・ヨーク、２・・・・・・コイル、３・・
・・・・ハンマスプリング、４・・・・・・印字ワイヤ
、５・・・・・・磁石、６・・・第１図
５、 石龜石FIG. 1 is a conceptual diagram of the present invention, and FIG. 2 is a sectional view taken along the line AA' in FIG. 1... Yoke, 2... Coil, 3...
...Hammer spring, 4...Printing wire, 5...Magnet, 6...Fig.
Claims (1)
気回路部分にスロットを有することを特徴とする印字ヘ
ッド。A print head for a dot impact printer, characterized by having a slot in a magnetic circuit portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8884486A JPS62244658A (en) | 1986-04-16 | 1986-04-16 | Printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8884486A JPS62244658A (en) | 1986-04-16 | 1986-04-16 | Printing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62244658A true JPS62244658A (en) | 1987-10-26 |
Family
ID=13954277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8884486A Pending JPS62244658A (en) | 1986-04-16 | 1986-04-16 | Printing head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62244658A (en) |
-
1986
- 1986-04-16 JP JP8884486A patent/JPS62244658A/en active Pending
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