JPH0667623B2 - Impact dot head - Google Patents
Impact dot headInfo
- Publication number
- JPH0667623B2 JPH0667623B2 JP1394785A JP1394785A JPH0667623B2 JP H0667623 B2 JPH0667623 B2 JP H0667623B2 JP 1394785 A JP1394785 A JP 1394785A JP 1394785 A JP1394785 A JP 1394785A JP H0667623 B2 JPH0667623 B2 JP H0667623B2
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- sound
- back stopper
- sound absorbing
- stopper
- 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
- 239000002184 metal Substances 0.000 claims description 3
- 239000011358 absorbing material Substances 0.000 description 12
- 239000011810 insulating material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000002195 synergetic 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
- B41J2/275—Actuators for print wires of clapper type
Landscapes
- Impact Printers (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 本発明は印字騒音を低減させたインパクトドットヘッド
に関するものである。Description: TECHNICAL FIELD The present invention relates to an impact dot head with reduced printing noise.
第３図に示す従来例において、印字動作終了後アクチュ
エーター31の衝撃を受け加振されるバックストッパー36
は、表面積が大で騒音の放射エネルギーが大であった。
この為バックストッパー36に防音材等37を付加した例も
あるが、機械的にバックストッパー36は剛性が高くなけ
ればならず、防音材37との相対変位が小さい為に防音材
37を付加しても防音材37は単にバックストッパー36の振
動により発生する音波の方向を分散させる効果のみであ
り、騒音の音響エネルギーそのものの削減には大きな効
果がなかった。In the conventional example shown in FIG. 3, the back stopper 36 is vibrated by the impact of the actuator 31 after the printing operation is completed.
Had a large surface area and a large amount of noise radiant energy.
For this reason, there is an example in which a soundproof material 37 etc. is added to the back stopper 36, but the back stopper 36 must be mechanically high in rigidity, and since the relative displacement with the soundproof material 37 is small, the soundproof material is
Even if 37 was added, the soundproof material 37 had only the effect of dispersing the direction of the sound wave generated by the vibration of the back stopper 36, and had no great effect in reducing the acoustic energy itself of noise.
本発明の目的はバックストッパーの振動を吸音部材で減
衰せしめ、さらに遮音部材で遮音せしめる事による印字
時の騒音を低減したインパクトドットヘッドを提供する
事にある。An object of the present invention is to provide an impact dot head in which the sound of a back stopper is damped by a sound absorbing member, and the noise at the time of printing due to the sound insulating member is reduced.
［課題を解決するための手段］ 本発明によるインパクトドットヘッドは、一端で回動可
能に支持され、弾性力で常時復帰方向に付勢されるアク
チュエーターと、このアクチュエーターを印字方向に駆
動するコイルが捲装されたコアと、アクチュエーターに
駆動され先端でインクリボンを介して用紙を打撃する印
字ワイヤと、復帰するアクチュエーターの他端が当接す
るダンパー部材が設けられたバックストッパーと、この
バックストッパーの全背面に設けられた多孔質部材より
なる吸音部材と、この吸音部材の全背面に設けられた金
属製の遮音部材とを備えたことを特徴とするものであ
る。[Means for Solving the Problems] The impact dot head according to the present invention includes an actuator that is rotatably supported at one end and is constantly urged in the return direction by an elastic force, and a coil that drives the actuator in the printing direction. The wound core, the print wire that is driven by the actuator to hit the paper through the ink ribbon at the tip, the back stopper provided with the damper member with which the other end of the returning actuator abuts, and the entire back stopper. The sound absorbing member made of a porous member is provided on the back surface, and the sound absorbing member made of metal is provided on the entire back surface of the sound absorbing member.
以下図面に従って本発明を詳細に説明する。第１図は本
発明の一実施例を示す図で、印字ワイヤー２を有するア
クチュエーター１は回転支点部1aを支点バネ10で押圧さ
れ回転可能になっている。コア４に巻回されたコイル３
で発生した磁束がコア4,アクチュエーター１で構成され
る磁気回路を通る。印字ワイヤー２を有するアクチュエ
ーター１は復帰バネ９によりストッパーゴム５が装着さ
れているバックストッパー６に押圧され待機位置に保持
されている。バックストッパー６の面6aには吸音材７、
例えばフエルトが設けられており、さらに吸音材７には
遮音材８、例えば剛性の高い金属が設けられている。プ
ラテン13と印字ワイヤー２の間にインクリボン11,紙12
が設けられている。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a view showing an embodiment of the present invention, in which an actuator 1 having a print wire 2 is rotatable by pressing a rotation fulcrum portion 1a with a fulcrum spring 10. Coil 3 wound around core 4
The magnetic flux generated in 1 passes through the magnetic circuit composed of the core 4 and the actuator 1. The actuator 1 having the print wire 2 is held by the return spring 9 against the back stopper 6 to which the stopper rubber 5 is attached and held at the standby position. The sound absorbing material 7, on the surface 6a of the back stopper 6,
For example, a felt is provided, and the sound absorbing material 7 is provided with a sound insulating material 8, for example, a metal having high rigidity. Ink ribbon 11, paper 12 between platen 13 and print wire 2
Is provided.
前記構成において動作を説明する。印字指令信号により
コイル３に通電するとコア4,アクチュエーター１を通る
磁束が発生し、アクチュエーター１とコア４との間に吸
引力が生じ、印字ワイヤー２を有するアクチュエーター
１が支点バネ10に押圧されている支点1aを支点にして、
時計回りに回転運動する。印字ワイヤー２はアクチュエ
ーター１の回転運動により右方向に運動して、インクリ
ボン11,紙12を介してプラテン13に衝突し紙12上にドッ
トを形成し印字をする。印字終了後印字ワイヤー２を有
するアクチュエーターはプラテン13からの反発力及び復
帰バネ９のバネ力により左方向に戻り、ダンパー部材で
あるストッパーゴム５が装着されているバックストッパ
ー６に衝突し、バックストッパー６を加振する。バック
ストッパー６の面6aには本発明による吸音材７及び遮音
材８がこの順番に設けられているため、バックストッパ
ー６の振動により発生した音波はまず吸音材７を通過す
る際に音響エネルギーが減少し、さらに遮音材８により
遮音される。The operation of the above configuration will be described. When the coil 3 is energized by the print command signal, a magnetic flux passing through the core 4 and the actuator 1 is generated, an attractive force is generated between the actuator 1 and the core 4, and the actuator 1 having the print wire 2 is pressed by the fulcrum spring 10. With fulcrum 1a
Rotate clockwise. The printing wire 2 moves to the right by the rotational movement of the actuator 1 and collides with the platen 13 via the ink ribbon 11 and the paper 12 to form dots on the paper 12 for printing. After the printing is completed, the actuator having the printing wire 2 returns to the left by the repulsive force from the platen 13 and the spring force of the return spring 9, and collides with the back stopper 6 to which the stopper rubber 5 as the damper member is attached, thereby causing the back stopper. Excitate 6. Since the sound absorbing material 7 and the sound insulating material 8 according to the present invention are provided on the surface 6a of the back stopper 6 in this order, the sound wave generated by the vibration of the back stopper 6 first has acoustic energy when passing through the sound absorbing material 7. The noise is reduced, and the sound insulation material 8 further shields the sound.
また吸音材７がバックストッパー６と遮音材８の間にあ
る為、バックストッパー６の振動により遮音材８の振動
が励起され両者の振動変位に位相差を生じさせ、吸音材
７が減衰材としても作用しバックストッパー６の振動を
速やかに減衰させ、効果的にバックストッパー６から発
生する騒音の低減が図れる。Further, since the sound absorbing material 7 is between the back stopper 6 and the sound insulating material 8, the vibration of the sound insulating material 8 is excited by the vibration of the back stopper 6 to cause a phase difference in the vibration displacement of both, and the sound absorbing material 7 serves as a damping material. This also acts to quickly damp the vibration of the back stopper 6 and effectively reduce the noise generated from the back stopper 6.
実際に本発明による24ピンワイヤーインパクトドットヘ
ッドで印字した時、吸音材及び遮音材を用いなかった
り、この順番にしなかった時にくらべ3dB（Ａ）〜4dB
（Ａ）減少し、その効果は非常に大であった。When actually printing with the 24-pin wire impact dot head according to the present invention, 3 dB (A) to 4 dB compared to the case where no sound absorbing material and sound insulating material are used or when this order is not used.
(A) It decreased and the effect was very large.
又、第２図に他の実施例を示す。本実施例は、アクチュ
エーター21にプランジャー14が固着されており、アクチ
ュエーター21の一端に印字ワイヤー22が係合している。
コイル23で発生した磁束がコア24,サイドヨーク15,プラ
ンジャー14で構成される磁気回路を通る。ストッパーゴ
ム25が装着されているバックストッパー26の面26aには
吸音材27、例えば弾性変形しやすい発泡性シリコンゴム
が設けられており、さらに吸音材27には遮音材28、例え
ば比重の高い鉛板が設けられている。印字指令信号によ
りコイル23に通電すると、コイル23によって磁束が発生
しプランジャー14とコア24との間に吸引力が生じ、プラ
ンジャー14が固着されているアクチュエーター21が印字
ワイヤー22を付勢して印字を行なう。印字終了後アクチ
ュエーター21と印字ワイヤー22は、プラテン13からの反
発力及び復帰バネ９のバネ力により戻り、ストッパーゴ
ム25が装着されているバックストッパー26に衝突し、バ
ックストッパー26を加振するが、バックストッパー26の
面26aには本発明による吸音材27及び遮音材28がこの順
番に設けられているため、速やかに減衰し、しかも遮音
されるために騒音の低減が図られる。Another embodiment is shown in FIG. In this embodiment, the plunger 14 is fixed to the actuator 21, and the print wire 22 is engaged with one end of the actuator 21.
The magnetic flux generated in the coil 23 passes through the magnetic circuit composed of the core 24, the side yoke 15, and the plunger 14. The surface 26a of the back stopper 26 on which the stopper rubber 25 is mounted is provided with a sound absorbing material 27, for example, foamable silicone rubber that is easily elastically deformed, and the sound absorbing material 27 has a sound insulating material 28, for example, lead with high specific gravity. A plate is provided. When the coil 23 is energized by the print command signal, a magnetic flux is generated by the coil 23 and a suction force is generated between the plunger 14 and the core 24, and the actuator 21 to which the plunger 14 is fixed urges the print wire 22. To print. After the printing is completed, the actuator 21 and the printing wire 22 return by the repulsive force from the platen 13 and the spring force of the return spring 9, collide with the back stopper 26 having the stopper rubber 25 attached thereto, and vibrate the back stopper 26. Since the surface 26a of the back stopper 26 is provided with the sound absorbing material 27 and the sound insulating material 28 according to the present invention in this order, the sound is quickly attenuated and the sound is insulated, so that the noise can be reduced.
以上詳細に説明したように本発明によれば、アクチュエ
ーターがバックストッパーに衝突する事により生ずるバ
ックストッパーの振動を、吸音材で速やかに減衰させ、
さらに遮音材で遮音させる事が可能となり、この吸音部
材と遮音部材の相乗効果によりバックストッパーの振動
による騒音が減少し、インパクトドットヘッドプリンタ
ーの印字騒音の低減に大きな効果がある。As described in detail above, according to the present invention, the vibration of the back stopper caused by the actuator colliding with the back stopper is quickly attenuated by the sound absorbing material,
Furthermore, it becomes possible to insulate sound by a sound insulation material, and the synergistic effect of the sound absorption member and the sound insulation member reduces noise due to vibration of the back stopper, which is greatly effective in reducing printing noise of the impact dot head printer.
第１図は本発明の一実施例を示すインパクトドットヘッ
ドの断面図、第２図は他の実施例を示す断面図、第３図
は従来例を示す断面図である。 1,21,31……アクチュエーター 2,22,32……印字ワイヤー 3,23,33……コイル 4,24,34……コア 6,26,36……バックストッパー 7,27……吸音材 8,28……遮音材FIG. 1 is a sectional view of an impact dot head showing an embodiment of the present invention, FIG. 2 is a sectional view showing another embodiment, and FIG. 3 is a sectional view showing a conventional example. 1,21,31 …… Actuator 2,22,32 …… Printing wire 3,23,33 …… Coil 4,24,34 …… Core 6,26,36 …… Back stopper 7,27 …… Sound absorbing material 8 , 28 …… Sound insulation
Claims (1)
復帰方向に付勢されるアクチュエーターと、 このアクチュエーターを印字方向に駆動するコイルが捲
装されたコアと、 前記アクチュエーターに駆動され先端でインクリボンを
介して用紙を打撃する印字ワイヤと、 復帰する前記アクチュエーターの他端が当接するダンパ
ー部材が設けられたバックストッパーと、 このバックストッパーの全背面に設けられた多孔質部材
よりなる吸音部材と、 この吸音部材の全背面に設けられた金属製の遮音部材と
を備えたことを特徴とするインパクトドットヘッド。1. An actuator rotatably supported at one end and constantly urged in a return direction by an elastic force, a core wound with a coil for driving the actuator in a printing direction, and driven by the actuator. It consists of a print wire that strikes the paper at the tip through an ink ribbon, a back stopper that is provided with a damper member that the other end of the returning actuator contacts, and a porous member that is provided on the entire back surface of this back stopper. An impact dot head comprising a sound absorbing member and a metal sound insulating member provided on the entire back surface of the sound absorbing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1394785A JPH0667623B2 (en) | 1985-01-28 | 1985-01-28 | Impact dot head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1394785A JPH0667623B2 (en) | 1985-01-28 | 1985-01-28 | Impact dot head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61172744A JPS61172744A (en) | 1986-08-04 |
| JPH0667623B2 true JPH0667623B2 (en) | 1994-08-31 |
Family
ID=11847399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1394785A Expired - Lifetime JPH0667623B2 (en) | 1985-01-28 | 1985-01-28 | Impact dot head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667623B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2841397B2 (en) * | 1988-12-01 | 1998-12-24 | セイコーエプソン株式会社 | Inkjet recording head |
-
1985
- 1985-01-28 JP JP1394785A patent/JPH0667623B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61172744A (en) | 1986-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |