JPH0172342U - - Google Patents
Info
- Publication number
- JPH0172342U JPH0172342U JP1987167909U JP16790987U JPH0172342U JP H0172342 U JPH0172342 U JP H0172342U JP 1987167909 U JP1987167909 U JP 1987167909U JP 16790987 U JP16790987 U JP 16790987U JP H0172342 U JPH0172342 U JP H0172342U
- Authority
- JP
- Japan
- Prior art keywords
- armature
- detection circuit
- electromagnet
- dot printing
- displacement
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims 3
- 230000005284 excitation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Impact Printers (AREA)
Description
第１図は本考案の一実施例を示す側断面図、第
２図は同実施例の要部分解斜視図、第３図は同実
施例の要部分解斜視図、第４図は同実施例の要部
斜視図、第５図は同実施例の動作原理を示す説明
図、第６図は同実施例の要部斜視図、第７図ａ，
ｂは同実施例の要部側面図、第８図は同実施例の
検出回路を示す回路図、第９図は同実施例の作用
を示すグラフ、第１０図はドツト印字ヘツドの側
断面図、第１１図はドライブタイムと印字ワイヤ
変位の関係を示す波形図、第１２図は従来例の側
断面図である。
２……永久磁石、９……コア、１０……コイル
、１１……電磁石、１４……アーマチユア、１５
……印字ワイヤ、１７……検出基板、１８ａ，１
８ｂ……極板、２６…検出回路。
Fig. 1 is a side sectional view showing one embodiment of the present invention, Fig. 2 is an exploded perspective view of the main part of the same embodiment, Fig. 3 is an exploded perspective view of the main part of the same embodiment, and Fig. 4 is the same embodiment. FIG. 5 is an explanatory diagram showing the principle of operation of the embodiment; FIG. 6 is a perspective view of the essential parts of the embodiment; FIG. 7a,
Fig. 8 is a circuit diagram showing the detection circuit of the same embodiment, Fig. 9 is a graph showing the operation of the same embodiment, and Fig. 10 is a side sectional view of the dot printing head. , FIG. 11 is a waveform diagram showing the relationship between drive time and printing wire displacement, and FIG. 12 is a side sectional view of a conventional example. 2... Permanent magnet, 9... Core, 10... Coil, 11... Electromagnet, 14... Armature, 15
...Printing wire, 17...Detection board, 18a, 1
8b... Pole plate, 26... Detection circuit.
Claims (1)
吸引して板ばねを撓ませておき、この吸引磁束を
電磁石による消磁磁束で打ち消してアーマチユア
を解放することによつてアーマチユアの先端に固
着した印字ワイヤを駆動するドツト印字ヘツドに
おいて、 互いに異符号の電荷を付加し、前記アーマチユ
アを側面より挟んで対向配置する一対の極板と、 該極板の静電容量の変化よりアーマチユアの変
位量を検出する検出回路とを設け、 印字時、前記検出回路の検出したアーマチユア
の変位量に応じて前記電磁石の励磁時間を決定す
ることを特徴とするドツト印字ヘツド。[Scope of Claim for Utility Model Registration] The armature is attracted by the magnetic flux generated by a permanent magnet to bend the leaf spring, and this magnetic flux is canceled by the demagnetizing flux generated by the electromagnet to release the armature. In the dot printing head that drives the fixed printing wire, a pair of electrode plates are placed facing each other with the armature sandwiched from the sides, and charges of opposite signs are added to each other, and the displacement of the armature is determined by changes in the capacitance of the electrode plates. 1. A dot printing head, comprising: a detection circuit for detecting the amount of dot printing; and during printing, the excitation time of the electromagnet is determined according to the amount of displacement of the armature detected by the detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987167909U JPH0172342U (en) | 1987-11-04 | 1987-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987167909U JPH0172342U (en) | 1987-11-04 | 1987-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0172342U true JPH0172342U (en) | 1989-05-16 |
Family
ID=31456627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987167909U Pending JPH0172342U (en) | 1987-11-04 | 1987-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0172342U (en) |
-
1987
- 1987-11-04 JP JP1987167909U patent/JPH0172342U/ja active Pending
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