JPH0767813B2 - Piezoelectric print head - Google Patents
Piezoelectric print headInfo
- Publication number
- JPH0767813B2 JPH0767813B2 JP2175009A JP17500990A JPH0767813B2 JP H0767813 B2 JPH0767813 B2 JP H0767813B2 JP 2175009 A JP2175009 A JP 2175009A JP 17500990 A JP17500990 A JP 17500990A JP H0767813 B2 JPH0767813 B2 JP H0767813B2
- Authority
- JP
- Japan
- Prior art keywords
- print head
- actuator
- piezoelectric element
- gel
- silicone
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 15
- 229920001296 polysiloxane Polymers 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 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
- B41J2/295—Actuators for print wires using piezoelectric elements
Landscapes
- Impact Printers (AREA)
Description
【発明の詳細な説明】 〔概 要〕 圧電素子型印字ヘッドの構造に関し、 駆動時の低騒音化を目的とし、 印字ワイヤを駆動する圧電素子のアクチェータを複数個
備えた圧電素子型印字ヘッドにおいて、アクチェータの
外側部及びその周辺部をゲル状のシリコーン系材料で覆
って構成する。DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding a structure of a piezoelectric element type print head, a piezoelectric element type print head provided with a plurality of piezoelectric element actuators for driving a print wire for the purpose of reducing noise during driving. The outer part of the actuator and its peripheral part are covered with a gel-like silicone material.
本発明は、圧電素子型印字ヘッドの構造に関する。 The present invention relates to a structure of a piezoelectric element type print head.
近来、印字品質と印字速度の向上が要望されており、ワ
イヤドット式印字ヘッドのアクチェータとしても積層型
圧電素子等が用いられるようになって来た。Recently, there has been a demand for improvement in printing quality and printing speed, and a laminated piezoelectric element or the like has come to be used also as an actuator for a wire dot type print head.
然し乍ら積層型圧電素子は、伸縮の際に騒音を生じる短
所があり対策が要望されている。However, the laminated piezoelectric element has a drawback that noise is generated when it expands and contracts, and a countermeasure is demanded.
本発明が適用される圧電素子型印字ヘッドは、第２図の
側面図に示す如く、圧電素子を用いたアクチェータ１
と、アクチェータ１の伸縮面（登頂部）に接続するばね
部３を有するアーマチュア２と、アーマチュア２をばね
部４を介して支持する支柱５と、アーマチュア２の先端
に支持された印字ワイヤ６とから構成されている。The piezoelectric element type print head to which the present invention is applied is, as shown in the side view of FIG. 2, an actuator 1 using a piezoelectric element.
An armature 2 having a spring portion 3 connected to the stretchable surface (climbing portion) of the actuator 1; It consists of
アクチェータ１に印字信号に基づいた電荷を負荷する
と、積層された圧電素子の個々に電歪が生じ柱状となっ
た圧電素子が一体になって伸縮動作する。When the actuator 1 is loaded with a charge based on a print signal, electrostriction occurs in each of the laminated piezoelectric elements, and the piezoelectric elements having a columnar shape are integrally expanded and contracted.
この伸縮量は微小なものであって、印字ヘッドとしては
この微小な運動を梃の原理を応用したアーマチュア２や
ばね部３、４等から成る拡大機構に依って拡大し、印字
を行うようにしている。The amount of expansion and contraction is very small. As a print head, this minute movement is enlarged by an enlargement mechanism consisting of an armature 2 and springs 3 and 4 applying the principle of leverage, and printing is performed. ing.
斯かる構成の圧電アクチェータ１は、図示の如く、所要
数（例えば24個或いは48個）が個々にプリント基板７上
に円形或いは楕円形に配されて、24或いは48ピンの印字
ヘッドを構成している。As shown in the figure, the piezoelectric actuator 1 having such a configuration has a required number (for example, 24 or 48) individually arranged in a circular or elliptical shape on the printed circuit board 7 to form a print head of 24 or 48 pins. ing.
以上の説明のようにアクチェータは、個々に母材となる
圧電素子の積層基板を切断しこれを積層して作られる。As described above, the actuator is made by cutting the laminated substrates of the piezoelectric elements which are the base materials individually and laminating them.
従って、印字ヘッドのアクチェータとして動作した時に
可成りの騒音を発生すると言う問題点があった。Therefore, there is a problem that a considerable amount of noise is generated when operating as an actuator of the print head.
本発明は、駆動時の低騒音化を目的とするものである。The present invention is intended to reduce noise during driving.
上記目的を達成する為に本発明に於いては、第１図の側
面図に示す如く、アクチェータ１の外側部1a及びその周
辺部８をゲル状のシリコーン系材料９で覆うようにした
ものである。In order to achieve the above object, in the present invention, as shown in the side view of FIG. 1, the outer side portion 1a of the actuator 1 and its peripheral portion 8 are covered with a gel-like silicone material 9. is there.
ゲル状のシリコーン系材料９は、例えばポリマー分子量
を上げ架橋密度を下げた時に低周波領域で損失係数の大
きなゲルを得ることが出来、防振−衝撃吸収性能に優れ
ている。The gel-like silicone material 9 can obtain a gel having a large loss coefficient in the low frequency region when, for example, the polymer molecular weight is increased and the crosslinking density is decreased, and is excellent in vibration damping-shock absorption performance.
従ってこれを防振材として印字ヘッドのアクチェータに
採用することで、広域にわたる振動周波数に対して防振
・防音効果を向上させることが出来る。Therefore, by adopting this as an anti-vibration material in the actuator of the print head, it is possible to improve anti-vibration and anti-noise effects over a wide range of vibration frequencies.
第１図は本発明の一実施例である。 FIG. 1 shows an embodiment of the present invention.
全図を通じて同一部分には同一符号を付して示した。The same portions are denoted by the same reference numerals throughout the drawings.
本発明に於いては、第１図の側面図に示す如く、アクチ
ェータ１の外側部1a及びその周辺部８をゲル状のシリコ
ーン系材料９で覆うようにしたもので、アーマチュア２
や印字ワイヤ６等の可動部品は除くように注意するもの
である。In the present invention, as shown in the side view of FIG. 1, the outer portion 1a of the actuator 1 and its peripheral portion 8 are covered with a gel-like silicone material 9, and the armature 2
Be careful not to remove movable parts such as the print wire 6 and the print wire 6.
ゲル状のシリコーン系材料９は、防音・防振材料として
衝撃力の吸収性に優れている。The gel-like silicone material 9 is excellent in absorbing impact force as a soundproofing / vibrationproofing material.
即ち、シリコーンゲルは、液状のシリコーンオイルをハ
イドロサイレーション（付加）反応に依り、従来のシリ
コーンエラストマーの1/5〜1/10の架橋密度で硬化させ
たシリコーンの寒天状の材料である。That is, the silicone gel is a silicone agar-like material obtained by curing a liquid silicone oil by a hydrosilation (addition) reaction with a crosslinking density of 1/5 to 1/10 that of a conventional silicone elastomer.
シリコーンゲルは、硬化前は比較的低粘度の液体だが、
硬化した後はプリン状のタックの強いゲル状エラストマ
ーとなり、オルガノポリシロキサン特有の性質と、低架
橋密度から生じる特性を併せ持つ機能性素材である。Silicone gel is a liquid of relatively low viscosity before curing,
After curing, it becomes a gel-like elastomer with a strong purine-like tack, and is a functional material that has both the properties peculiar to organopolysiloxane and the properties resulting from its low crosslink density.
基本構造は、両末端、側鎖にビニル基を持ったオルガノ
ポリシロキサンをポリハイドロジエンシロキサンで架橋
したもので、架橋密度、分子量を変えることに依り粘弾
性特性（弾性率、損失係数tanδ）を調整することが出
来る。The basic structure is an organopolysiloxane having vinyl groups at both ends and side chains crosslinked with polyhydrodiene siloxane. Viscoelastic properties (elastic modulus, loss coefficient tan δ) can be obtained by changing the crosslink density and molecular weight. It can be adjusted.
例えば、ポリマー分子量を上げ架橋密度を下げた時に
は、低周波領域で損失係数の大きなゲルを得ることが出
来て、防振−衝撃吸収性能に優れている。For example, when the polymer molecular weight is increased and the crosslinking density is decreased, a gel having a large loss coefficient can be obtained in the low frequency region, and the vibration-damping / shock absorbing performance is excellent.
従って、これを防振材として印字ヘッドのアクチェータ
１に塗布すべく採用することで、アクチェータ１及びそ
の付近の広域にわたる振動周波数に対して防振・防音効
果を向上させることが出来るものである。Therefore, by adopting this as a vibration-proof material so as to be applied to the actuator 1 of the print head, it is possible to improve the vibration-proof / sound-proof effect against a wide range of vibration frequencies of the actuator 1 and its vicinity.
尚、ゲル状のシリコーン系材料９としては、シーゲル社
（株）製のωタイプが最適で衝撃力の吸収性に優れてい
る。The ω type manufactured by Siegel Co., Ltd. is the most suitable as the gel-like silicone material 9 and is excellent in impact force absorption.
又、同社製のαタイプ、βタイプ、γタイプの何れかを
用いても同様の効果を奏することが出来る。Further, the same effect can be obtained by using any of α type, β type and γ type manufactured by the same company.
上記説明においてゲル状のシリコーン系材料９の塗布
は、圧電素子で成るアクチェータ１に塗布することで行
ったが、印字ワイヤを備えたアーマチュアを電磁石で吸
着する吸着型の印字ヘッド、及び、永久磁石で吸着した
アーマチュアを電磁石で釈放する釈放型の印字ヘッド
に、可動部を除いて塗布するようにしても同様の効果を
奏することが可能である。In the above description, the gel-like silicone material 9 was applied by applying it to the actuator 1 composed of a piezoelectric element. However, an attraction type print head that attracts an armature equipped with a print wire with an electromagnet, and a permanent magnet. The same effect can be obtained even when the armature adsorbed in (1) is applied to a release type print head which releases with an electromagnet except the movable part.
本発明を適用することで、圧電素子型印字ヘッドの駆動
時に生じるアクチェータの低騒音化が可能となり、作業
環境の改善を図れる等、産業上に多大の効果を奏する。By applying the present invention, it is possible to reduce the noise of the actuator that occurs when the piezoelectric element type print head is driven, and it is possible to achieve a great industrial effect such as improving the working environment.
第１図は本発明の圧電素子型印字ヘッドの側面図、 第２図は従来の圧電素子型印字ヘッドの側面図である。 図に於いて、 １はアクチェータ、1aは外側部、 ２はアーマチュア、３、４はばね部、 ５は支柱、６は印字ワイヤ、 ７はプリント基板、８は周辺部、 ９はゲル状のシリコーン系材料である。 FIG. 1 is a side view of a piezoelectric element type print head of the present invention, and FIG. 2 is a side view of a conventional piezoelectric element type print head. In the figure, 1 is an actuator, 1a is an outer part, 2 is an armature, 3 and 4 are spring parts, 5 is a pillar, 6 is a print wire, 7 is a printed circuit board, 8 is a peripheral part, and 9 is a gel-like silicone. It is a system material.
Claims (1)
クチェータ（１）を複数個備えた圧電素子型印字ヘッド
において、 前記アクチェータ（１）の外側部（1a）及びその周辺部
（８）をゲル状のシリコーン系材料（９）で覆ったこと
を特徴とする圧電素子型印字ヘッド。1. A piezoelectric element type print head comprising a plurality of piezoelectric element actuators (1) for driving a print wire (6), the outer portion (1a) of the actuator (1) and its peripheral portion (8). A piezoelectric element type print head, characterized in that the gel-like silicone material (9) is covered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2175009A JPH0767813B2 (en) | 1990-07-02 | 1990-07-02 | Piezoelectric print head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2175009A JPH0767813B2 (en) | 1990-07-02 | 1990-07-02 | Piezoelectric print head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470356A JPH0470356A (en) | 1992-03-05 |
| JPH0767813B2 true JPH0767813B2 (en) | 1995-07-26 |
Family
ID=15988622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2175009A Expired - Fee Related JPH0767813B2 (en) | 1990-07-02 | 1990-07-02 | Piezoelectric print head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767813B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69328734T2 (en) | 1992-06-23 | 2000-09-07 | Fujitsu Ltd | Print head with print wires |
| KR100612320B1 (en) * | 2004-06-17 | 2006-08-16 | 삼성전자주식회사 | Ink Jet Head and Fabricating Method Thereof, Head Exchange Method Thereby |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317060A (en) * | 1986-07-09 | 1988-01-25 | Nec Corp | Printing element |
| JP2800177B2 (en) * | 1987-11-18 | 1998-09-21 | セイコーエプソン株式会社 | Manufacturing method of wire dot head |
-
1990
- 1990-07-02 JP JP2175009A patent/JPH0767813B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0470356A (en) | 1992-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |