JPS6317060A - Printing element - Google Patents
Printing elementInfo
- Publication number
- JPS6317060A JPS6317060A JP16227086A JP16227086A JPS6317060A JP S6317060 A JPS6317060 A JP S6317060A JP 16227086 A JP16227086 A JP 16227086A JP 16227086 A JP16227086 A JP 16227086A JP S6317060 A JPS6317060 A JP S6317060A
- Authority
- JP
- Japan
- Prior art keywords
- base
- drive source
- thermal
- printing
- ceramic
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 abstract description 9
- 229920005989 resin Polymers 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 6
- 229920002050 silicone resin Polymers 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発８Ａｒｉ印字エレメント、特に圧電セラミ、り材の
電歪縦効果により発生した寸法歪をレバー機構で拡大し
て印字用ワイヤに伝達しドツト印字する印字エレメント
に関する。[Detailed Description of the Invention] [Industrial Application Field] The 8Ari printing element of the present invention, in particular the piezoelectric ceramic, magnifies the dimensional distortion generated by the electrostrictive longitudinal effect of the material using a lever mechanism and transmits it to the printing wire to form a dot. Concerning the printing element to be printed.
従来、ドツト印字ヘッドの小形化・低電力化を図るため
、セラミ、り素子が電歪縦効果により発生する寸法歪を
レバー機構で拡大し印字用ワイヤに伝達してドツト印字
を行なうようにした印字エレメントが提案されている。Conventionally, in order to make the dot print head more compact and use less power, a lever mechanism was used to magnify the dimensional distortion caused by the electrostrictive longitudinal effect of the ceramic element and transmit it to the printing wire to print dots. A printing element is proposed.
第２図は従来の印字エレメントの傳造例を示す斜視図で
ろる。２個のセラミ、り素子２ｒ金属の中間部材１２を
介在させて接続したものが、印字動作の駆動源である。FIG. 2 is a perspective view showing an example of the construction of a conventional printing element. The two ceramic elements 2r connected through a metal intermediate member 12 are the driving source for the printing operation.
この駆動源のセラミック素子２の下端はベースｌの内底
部に接続してめ９、また上端はレバー３および４の下端
部にそれぞれ接続しである。レバー３および４の下端部
はベース１にも接続しており、レバー３および４の上端
部はそれぞれとンジ５および６を介してレバー７に接続
している。レバー７には、印字用のワイヤ８が取付けで
ある。The lower end of the ceramic element 2 of this drive source is connected to the inner bottom of the base l, and the upper end is connected to the lower ends of the levers 3 and 4, respectively. The lower ends of levers 3 and 4 are also connected to base 1, and the upper ends of levers 3 and 4 are connected to lever 7 via hinges 5 and 6, respectively. A printing wire 8 is attached to the lever 7.
印字駆動時には、セラミ、り素子２が電歪縦効果により
破線矢印Ａの同きに伸びて寸法歪？発生し、これに応じ
てレバー３および４の上端にそれぞれ破線矢印Ｂおよび
Ｃの向きの変位を生ずる。During printing, the ceramic element 2 stretches in the same direction as the dashed arrow A due to the electrostrictive longitudinal effect, causing dimensional distortion. This causes the upper ends of levers 3 and 4 to be displaced in the directions of dashed arrows B and C, respectively.
この両変位に伴なう偶力はとンジ５および６を介してレ
バー７に伝達され、これに応じてレバー７に回転運動を
生じワイヤ８が破線矢印りの向きにインパクトしてドツ
ト印字を行なう。The couple of forces accompanying these two displacements is transmitted to the lever 7 via the hinges 5 and 6, and in response, the lever 7 rotates, causing the wire 8 to impact in the direction of the dashed arrow, thereby printing dots. Let's do it.
２個のセラミック素子２の間に介在する中間部材１２は
、印字動作を繰返している時にセラミック素子２に過大
応力が作用してｖＬ壊するのを防止すると共に、動作中
の発熱により温度上昇？生じた際にベース１とセラミッ
ク素子２との熱Ｗ銀量の差が生じてワイヤ８の先端位置
が変わるのｔ防止するために、設けたものである。例え
ば、ベース１の材料に熱膨張係数が＋３ ｐ ｐ ｒｎ
／”Ｏのインバー鋼を使用した場合、セラミ、り索子２
の熱膨張係数が＋ｌｐｐｍ／”Ｏでりると、湿灰上昇時
におけるｋＩＡ励源の熱膨張量がベース１の熱膨張量よ
りも小さくなり、とＩＬによってワイヤ８の先端位置が
温度上昇Ｍ＋Ｊよりも後退して、印字時に印字圧不足の
原因になる。こり場合には、例えは中間部材１２の材料
とし″′Ｃ熱彫彊係叙が＋２０ｐｐｍ／”Ｏのステンレ
ス蛸を使用し、駆動源全長に対する中ｒ８１部材１２（
Ｄ長さの割合がｌＯ伽になるように中間部材１２に設け
れば、駆！ｖｌ源全長についての熱膨張係Ｕ１を実質的
に＋３ｐｐｍ／”Ｏｌすなわちベース１の熱膨張係数の
値に等しくする仁とができる。従来の印字エレメントで
は、このような温鼠補９Ｎを施して、動作中の偏置上昇
に起因するベース１２よびセラミ、り索子２の膨張量に
差か生じないようにしている。The intermediate member 12 interposed between the two ceramic elements 2 prevents the ceramic element 2 from being damaged due to excessive stress during repeated printing operations, and also prevents temperature rise due to heat generation during operation. This is provided to prevent the position of the tip of the wire 8 from changing due to a difference in the amount of heated W silver between the base 1 and the ceramic element 2. For example, if the base 1 material has a thermal expansion coefficient of +3 p p rn
/” When using invar steel of O, ceramic, ribbon 2
If the thermal expansion coefficient of is +lppm/"O, the amount of thermal expansion of the kIA excitation source when the wet ash rises is smaller than the amount of thermal expansion of the base 1, and the tip position of the wire 8 due to IL increases in temperature M+J If this occurs, the intermediate member 12 may be made of stainless steel with a thermal engraving rating of +20 ppm/O, and the drive Medium r81 member 12 (
If the intermediate member 12 is provided so that the ratio of the length of D is 10, then the drive! It is possible to make the thermal expansion coefficient U1 for the entire length of the vl source substantially equal to +3 ppm/"O1, that is, the value of the thermal expansion coefficient of the base 1. In the conventional printing element, such a thermal expansion coefficient 9N is applied. This is done so that there is no difference in the amount of expansion of the base 12 and the ceramic cord 2 due to eccentric elevation during operation.
〔発に！Ａが解決しようとする間龜点〕上述したよりな
従来の印字エレメントては、創作開始後に熱平稠すなわ
ちベース１と−ＮＪＪ＝＜セラミック素子２＄？よぴ中
間部材１２）とが同温になる状急に達するｌでに、かな
υ長時間を袂する。[Departure! The gap that A is trying to solve] The above-mentioned conventional printing elements have thermal consistency after the start of creation, that is, base 1 and -NJJ=<ceramic element 2 $? The intermediate member 12) is heated for a long time until it suddenly reaches the same temperature as the intermediate member 12).
この間では、発熱体である駆動源の温度上昇が先行し、
これに伴なって駆動源の熱膨張が先行して、ワイヤ８の
先端位置が温度上昇前よシも突出するので、ワイヤ８の
先端がインクリボンに引掛けるなどの不具合を生じ易い
という問題点がある。During this period, the temperature of the drive source, which is a heating element, increases first,
Along with this, the thermal expansion of the drive source precedes, and the tip of the wire 8 protrudes even before the temperature rises, so problems such as the tip of the wire 8 getting caught on the ink ribbon are likely to occur. There is.
本発明の目的は、上述の問題点を解決するため動作開始
後に熱平衡に達するまでに要する時間を従来よりも短縮
した印字エレメントを提供することにある。SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a printing element in which the time required to reach thermal equilibrium after the start of operation is shorter than that of the conventional printing element.
本発明の印字エレメントは、印字駆動時に電歪縦効果に
より寸法歪を発生するセラミ、り素子をもつ棒状の駆動
源と、Ｕ字状に形成してあシ内底部に前記駆動源の一端
を接続したベースと、前記駆動源の他端および前記ベー
スの両頂部に接続しており前記寸法歪を拡大し印字用ワ
イヤに伝達してドツト印字するためのレバー機佛とを有
する印字エレメントにおいて、
前記ベースおよび前記駆動源の各熱膨張係数を実質的に
等しくなるよう構成し且つ前記ベースおよび前記駆動源
の間に介在する空隙に高熱伝導率をもち弾力性のある絶
縁材を充填しである。The printing element of the present invention includes a rod-shaped driving source having a ceramic element that generates dimensional distortion due to electrostrictive longitudinal effect during printing driving, and a rod-shaped driving source having a U-shape and having one end of the driving source at the inner bottom of the recess. A printing element having a connected base, and a lever mechanism connected to the other end of the drive source and both tops of the base for magnifying the dimensional distortion and transmitting it to a printing wire to print dots, The base and the driving source are configured to have substantially equal coefficients of thermal expansion, and the gap between the base and the driving source is filled with an elastic insulating material having high thermal conductivity. .
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図は本発明の一実施例を示す正面図でるる。FIG. 1 is a front view showing one embodiment of the present invention.
本実施例は、第２図に示した従来の印字エレメントにお
けるセラミ、り索子２および中間部材１２から成る駆動
源とベース１との間の空隙に、熱伝導率が高い絶縁体、
例えばシリコン系の樹脂材１゜を充填した構造をもつ。In this embodiment, an insulator with high thermal conductivity is used in the gap between the base 1 and the drive source made of ceramic, wire rod 2 and intermediate member 12 in the conventional printing element shown in FIG.
For example, it has a structure filled with 1° silicon-based resin material.
すなわち第１図において、Ｕ字形状のベース１の内底部
には、２個のセラミ、り素子２を中間部材１２を介在さ
せて接続した駆動源の下端が接続されており、ベース１
の上端部および駆動源の上端には、レバー３および４の
各下端部が接続されている。ベース１の内部側面および
これに対向している駆動源の側面の間に介在する空隙に
は、熱伝導を良くするためにアルミナなどを添加したシ
リコン樹脂の樹脂材１ｏを充填してるる。シリコン樹脂
は、弾力性があり変形を与えない。That is, in FIG. 1, the lower end of a drive source, which is made by connecting two ceramic elements 2 with an intermediate member 12 interposed, is connected to the inner bottom of a U-shaped base 1.
The lower ends of the levers 3 and 4 are connected to the upper end and the upper end of the drive source. A gap between the inner side surface of the base 1 and the side surface of the driving source facing the base 1 is filled with a resin material 1o made of silicone resin to which alumina or the like is added in order to improve heat conduction. Silicone resin is elastic and does not deform.
本実施例では、印字動作中に駆動源のセラミック素子２
からの発熱が、樹脂材１２内を迫りペースｌに伝導され
るので、動作開始後に熱平衡に達するまでに値する時間
は、従来よりも著しく短縮される。例えば−実験例では
、熱平衡に達するのに要する時間は、従来の印字エレメ
ントで３０分前後であり、これに対し本実施例ｆｔ逼用
したもので１分前後である。この結果、本実施例を適用
することにより、従来のようなワイヤ８の先端がインク
リボンを引掛けるなどの不具合の発生を防止することが
できる。In this embodiment, the ceramic element 2 of the drive source is
Since the heat generated from the resin material 12 is conducted to the pace l, the time required to reach thermal equilibrium after the start of operation is significantly shorter than in the past. For example, in experimental examples, the time required to reach thermal equilibrium was approximately 30 minutes with a conventional printing element, whereas it was approximately 1 minute with the present embodiment. As a result, by applying this embodiment, it is possible to prevent the occurrence of problems such as the tip of the wire 8 catching the ink ribbon as in the conventional case.
なお、ペース１とセラミ、り素子２との熱膨張係数が来
賓的に一致するよう材質を選定すれば、中間部材１２を
除去できる。Note that the intermediate member 12 can be removed if the materials are selected so that the thermal expansion coefficients of the paste 1 and the ceramic element 2 match with each other.
以上説明したように本発明には、熱平衡に達するのに要
する時間を従来よりも短縮した印字エレメントを笑現で
きるという効果がある。As explained above, the present invention has the effect of realizing a printing element in which the time required to reach thermal equilibrium is shorter than that of the conventional printing element.
第１図は本発明の実施例を示す正面図、第２図は従来の
印字エレメントを示す看視図である。
１・・・・・・ペース、２・・・・・・セラミ、り素子
、３，４゜７・・・・・・ヒンジ、５，６・・・・・・
ヒンジ、８・・・・・・ワイヤ、１０・・・・・・樹脂
材、１２・・・・・・中間部材。FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a conventional printing element. 1...Pace, 2...Ceramic element, 3,4°7...Hinge, 5,6...
Hinge, 8...Wire, 10...Resin material, 12...Intermediate member.
Claims (1)
ック素子をもつ棒状の駆動源と、Ｕ字状に形成してあり
内底部に前記駆動源の一端を接続したベースと、前記駆
動源の他端および前記ベースの両頂部に接続しており前
記寸法歪を拡大し印字用ワイヤに伝達してドット印字す
るためのレバー機構とを有する印字エレメントにおいて
、前記ベースおよび前記駆動源の各熱膨張係数を実質的
に等しくなるよう構成し且つ前記ベースおよび前記駆動
源の間に介在する空隙に高熱伝導率をもち弾力性のある
絶縁材を充填してあることを特徴とする印字エレメント
。A rod-shaped drive source having a ceramic element that generates dimensional distortion due to electrostrictive longitudinal effect during printing drive, a base formed in a U-shape with one end of the drive source connected to the inner bottom, and the other drive sources. In a printing element having a lever mechanism connected to an end and both tops of the base and for enlarging the dimensional distortion and transmitting it to a printing wire to print dots, each thermal expansion coefficient of the base and the drive source is A printing element characterized in that: the base and the driving source are substantially equal to each other, and a gap between the base and the driving source is filled with an elastic insulating material having high thermal conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16227086A JPS6317060A (en) | 1986-07-09 | 1986-07-09 | Printing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16227086A JPS6317060A (en) | 1986-07-09 | 1986-07-09 | Printing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6317060A true JPS6317060A (en) | 1988-01-25 |
| JPH0519909B2 JPH0519909B2 (en) | 1993-03-18 |
Family
ID=15751267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16227086A Granted JPS6317060A (en) | 1986-07-09 | 1986-07-09 | Printing element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6317060A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01124272U (en) * | 1988-02-16 | 1989-08-24 | ||
| JPH0387240U (en) * | 1989-12-21 | 1991-09-04 | ||
| JPH0470356A (en) * | 1990-07-02 | 1992-03-05 | Fujitsu Ltd | Piezoelectric element-type printing head |
| US5133612A (en) * | 1990-10-03 | 1992-07-28 | Brother Kogyo Kabushiki Kaisha | Dot impact type printing head with adhesively attached base unit |
| US5165807A (en) * | 1991-02-08 | 1992-11-24 | Brother Kogyo Kabushiki Kaisha | Printing head having a distortion element |
| US5184901A (en) * | 1989-07-20 | 1993-02-09 | Fujitsu Ltd. | Displacement magnifying mechanism for a print element |
| JPH0541798U (en) * | 1991-11-07 | 1993-06-08 | 富士通株式会社 | Piezoelectric element type wire dot printing head |
| EP0587192A1 (en) * | 1988-07-08 | 1994-03-16 | Fujitsu Limited | Electro-distortion device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177373A (en) * | 1982-04-12 | 1983-10-18 | Hitachi Ltd | Printing head |
| JPS5965491A (en) * | 1982-10-06 | 1984-04-13 | Hitachi Ltd | Piezo-electric fine displacement device |
| JPS6092868A (en) * | 1983-10-27 | 1985-05-24 | Nec Corp | Printing element and manufacture thereof |
-
1986
- 1986-07-09 JP JP16227086A patent/JPS6317060A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177373A (en) * | 1982-04-12 | 1983-10-18 | Hitachi Ltd | Printing head |
| JPS5965491A (en) * | 1982-10-06 | 1984-04-13 | Hitachi Ltd | Piezo-electric fine displacement device |
| JPS6092868A (en) * | 1983-10-27 | 1985-05-24 | Nec Corp | Printing element and manufacture thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01124272U (en) * | 1988-02-16 | 1989-08-24 | ||
| EP0587192A1 (en) * | 1988-07-08 | 1994-03-16 | Fujitsu Limited | Electro-distortion device |
| US5184901A (en) * | 1989-07-20 | 1993-02-09 | Fujitsu Ltd. | Displacement magnifying mechanism for a print element |
| JPH0387240U (en) * | 1989-12-21 | 1991-09-04 | ||
| JPH0470356A (en) * | 1990-07-02 | 1992-03-05 | Fujitsu Ltd | Piezoelectric element-type printing head |
| US5133612A (en) * | 1990-10-03 | 1992-07-28 | Brother Kogyo Kabushiki Kaisha | Dot impact type printing head with adhesively attached base unit |
| US5165807A (en) * | 1991-02-08 | 1992-11-24 | Brother Kogyo Kabushiki Kaisha | Printing head having a distortion element |
| JPH0541798U (en) * | 1991-11-07 | 1993-06-08 | 富士通株式会社 | Piezoelectric element type wire dot printing head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519909B2 (en) | 1993-03-18 |
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