JPS5935351B2 - inkjet printer - Google Patents
inkjet printerInfo
- Publication number
- JPS5935351B2 JPS5935351B2 JP3071279A JP3071279A JPS5935351B2 JP S5935351 B2 JPS5935351 B2 JP S5935351B2 JP 3071279 A JP3071279 A JP 3071279A JP 3071279 A JP3071279 A JP 3071279A JP S5935351 B2 JPS5935351 B2 JP S5935351B2
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- deflection
- inkjet printer
- electrode
- ink
- 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
Links
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
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
- B41J2/075—Ink jet characterised by jet control for many-valued deflection
- B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
- B41J2/09—Deflection means
Landscapes
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
【発明の詳細な説明】
本発明は、マルチノズルを有する荷電偏向型インクジェ
ットプリンタの改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a charge deflection type inkjet printer having multiple nozzles.
従来から、マルチノズルを有する荷電偏向型インクジェ
ットプリンタとして、第１図に示すように、ノズル１、
２、３・・・・・・より射出され、帯電して飛翔するイ
ンク粒子の走行路４、５、６・・・・・・を並行して複
数路設け、この走行路毎に、偏向電極１、８、９・・・
・・・を設置させたものが知られている。Conventionally, as a charge deflection type inkjet printer having multiple nozzles, as shown in FIG.
A plurality of running paths 4, 5, 6, etc. are provided in parallel for the ink particles ejected from 2, 3..., charged and flying, and a deflection electrode is provided for each running path. 1, 8, 9...
It is known that...
これらの偏向電極Ｔ、８、９・・・・・・は、それぞれ
、インク粒子の走行路４、５、６・・・・・・を挾む一
対の正負の電極板Ｔａ−Ｔｂ、Ｂａ−８ｂ、９ａ−９ｂ
・・・・・・から構成されており、これらの正負の電極
板Ｔａ、Ｔｂ・・・・・・は、交互に異極となるよう配
列されている。ところで、この種のインクジェットプリ
ンタにおいては、隣接するインク粒子走行路に設けられ
た２組の偏向電極例えばＴと８の、異極性電極板間即ち
正電極板Ｔｂと負電極板Ｂａとの間隙１０には、その電
位差に応じた電界が生じる。These deflection electrodes T, 8, 9, . . . are a pair of positive and negative electrode plates Ta-Tb, Ba-, which sandwich the travel paths 4, 5, 6, . . . of the ink particles, respectively. 8b, 9a-9b
. . . These positive and negative electrode plates Ta, Tb . . . are arranged so as to alternately have different polarities. By the way, in this type of inkjet printer, the gap 10 between two sets of deflection electrodes, for example, T and 8, provided in adjacent ink particle running paths, is between electrode plates of different polarity, that is, between the positive electrode plate Tb and the negative electrode plate Ba. An electric field is generated depending on the potential difference.
而してこの間隙１０はプリンタの機能上は全く無用のも
のであるにもかかわらず、両電極間の絶縁破壊を防止す
るために一定の間隔を保つことを余儀無くされていた。
このために、隣接するノズル１と２の最小間隔はその偏
向電極電圧によつてほぼ決定され、これが記録密度向上
の妨げとなつていた。Although this gap 10 is completely useless in terms of the functionality of the printer, it has been necessary to maintain a certain distance in order to prevent dielectric breakdown between the two electrodes.
For this reason, the minimum distance between adjacent nozzles 1 and 2 is almost determined by the deflection electrode voltage, which has been an obstacle to improving recording density.
かかる欠点を回避するため、第２図に示すように、飛翔
するインク粒子の走行路４、５、６・・・・・・毎に、
単一電極板から成る偏向電極Ｔ’、８’、９’を、正負
交互に設置することも考えられるが、このようなインク
ジェットプリンタでは、ノズル１、２、３・・・・・・
の相互な間隔を短縮し得る反面、正負各電極用の別個の
回路が必要となり、回路構成が複雑となるうえに、イン
ク粒子は、インクのベースの種類とノズルの材質により
ー方の極性に荷電する傾向があるため、インク粒子の飛
翔が不安定になるという欠点があつた。In order to avoid such drawbacks, as shown in FIG.
Although it is possible to alternately install the deflection electrodes T', 8', 9' consisting of a single electrode plate in positive and negative directions, in such an inkjet printer, nozzles 1, 2, 3, . . .
On the other hand, it requires separate circuits for the positive and negative electrodes, which complicates the circuit configuration, and the ink droplets have different polarity depending on the type of ink base and the material of the nozzle. This has the disadvantage that the flight of the ink particles becomes unstable because of the tendency to be electrically charged.
本発明は、かかる従来の欠点を解消すべくなされたもの
で、偏向電極を、一対の対向電極板により構成すると共
に隣接する偏向電極間の互いに対向する電極板を、誘電
体板の両面へ、両電極間の直線距離より沿面距離が長く
なるようにして一体に形成させた叙上の欠点のないイン
クジェットプリンタを提供しようとするものである。The present invention was made in order to eliminate such conventional drawbacks, and the deflection electrode is constituted by a pair of opposing electrode plates, and the mutually opposing electrode plates between adjacent deflection electrodes are arranged on both sides of a dielectric plate. It is an object of the present invention to provide an inkjet printer which is integrally formed so that the creepage distance between the two electrodes is longer than the straight line distance, and which does not have the above-mentioned drawbacks.
以下図面に示す実施例につき本発明の詳細を説明する。The present invention will be explained in detail below with reference to embodiments shown in the drawings.
第３図において、液室１１は図示しないインク貯蔵タン
クより供給されるインク１２が満たされ、オリフイス状
ノズル１３，１４・・・・・・に対応する液室壁１５に
はインクを霧化し、オリフイス状ノズル１３，１４・・
・・・・より射出するための附勢源である振動子１６，
１７・・・・・・が取り付けられている。In FIG. 3, the liquid chamber 11 is filled with ink 12 supplied from an ink storage tank (not shown), and the ink is atomized in the liquid chamber wall 15 corresponding to the orifice-shaped nozzles 13, 14, . Orifice-like nozzles 13, 14...
... vibrator 16, which is an auxiliary force source for ejecting more,
17... is attached.
また各ノズルの前方には、射出後のインク粒子に図示し
ない信号源から供給される信号に対応した電荷を適宜附
与する荷電電極１８，１９が配置されている。更にイン
ク粒子の走行路前方には、並行する各インク粒子走行路
毎にこの走行路２０，２１・・・を挟んで互に一面を対
向させその対向面間に電界を形成する正電極板２２ａ，
２３ａと負電極板２２ｂ，２３ｂとから成る偏向電極２
２，２３が設けられている。２４，２５は偏向を受けず
に直進するインク粒子を回収するガタ一を示している。Further, in front of each nozzle, charging electrodes 18 and 19 are arranged to appropriately impart electric charge to the ejected ink droplets in accordance with a signal supplied from a signal source (not shown). Further, in front of the ink particle running path, there is a positive electrode plate 22a for each parallel ink particle running path, with one surface facing each other across the running path 20, 21, etc., and forming an electric field between the opposing surfaces. ，
23a and negative electrode plates 22b and 23b.
2 and 23 are provided. Reference numerals 24 and 25 indicate rattles that collect ink particles that travel straight without being deflected.
而して、偏向電極２２の負電極板２２ｂは隣接する偏向
電極２３の対向する正電極板２３ａと誘電体板２６を介
して積層一体化されており、他の偏向電極もそれぞれ同
様の構成とされている。Thus, the negative electrode plate 22b of the deflection electrode 22 is laminated and integrated with the opposing positive electrode plate 23a of the adjacent deflection electrode 23 via the dielectric plate 26, and the other deflection electrodes have the same structure. has been done.
上記誘電体板２６はポリエチレンテレフタレートフイル
ム（商品名 マイラ一）やアクリル板のようなプラスチ
ツクのフイルム、シートあるいは薄板より構成されてお
り、負電極板２２ｂおよび正電極板２３ａは、第３図お
よび第４図に示すように、誘電体板２６の両面へ、その
直線距離より沿面距離が長くなるように、すなわち、誘
電体板２６の周縁部が残るようにして銅、銀その他の導
電金属を蒸着、スパツタリング、メツキあるいはラミネ
ート等の手段により一体に被着させて形成されている。
第５図は、負電極板２２ｂと正電極板２３ａ間の、沿面
距離を大きくとるために、誘電体板２６の周縁部へ、負
電極２２ｂおよび正電極２３ａに跨つて、絶縁性プラス
チツク２７を被着させた例であり、第６図は、同じ目的
で誘電体板２６の周縁部に等電位面に平行に摺曲部を形
成させたものである。The dielectric plate 26 is made of a plastic film, sheet, or thin plate such as a polyethylene terephthalate film (trade name Mylar) or an acrylic plate, and the negative electrode plate 22b and the positive electrode plate 23a are As shown in Figure 4, copper, silver, or other conductive metal is deposited on both sides of the dielectric plate 26 so that the creepage distance is longer than the straight line distance, that is, the peripheral edge of the dielectric plate 26 remains. , by sputtering, plating, laminating, or the like.
In FIG. 5, an insulating plastic 27 is placed around the periphery of the dielectric plate 26, spanning the negative electrode 22b and the positive electrode 23a, in order to increase the creepage distance between the negative electrode plate 22b and the positive electrode plate 23a. FIG. 6 shows an example in which a sliding portion is formed on the peripheral edge of the dielectric plate 26 parallel to the equipotential surface for the same purpose.
以上のように構成された本発明のイックジェットプリン
タにおいては、隣接する偏向電極の異極性の電極板が誘
電体板の両面へ両電極板間の沿面距離が直線距離より長
くなるようにしてそれぞれ一体に形成されているので、
両電極間の間隔がきわめて短かいにもかかわらずその間
に高電圧を加えても絶縁破壊を生じるおそれが無く、従
来のものよりもノズルの間隔を狭めて記録密度を向上さ
せることができる。In the IC jet printer of the present invention configured as described above, electrode plates of different polarities of adjacent deflection electrodes are attached to both sides of the dielectric plate so that the creepage distance between the two electrode plates is longer than the straight line distance. Since it is integrally formed,
Even though the distance between the two electrodes is extremely short, there is no risk of dielectric breakdown even if a high voltage is applied therebetween, and the recording density can be improved by narrowing the distance between the nozzles compared to conventional devices.
また、その全幅を従来方式よりも大幅に短縮することが
可能である。Further, the total width can be significantly reduced compared to the conventional method.
第１図および第２図は、従来のイックジェットプリンタ
の構成を示す説明図、第３図は、本発明のイックジェッ
トプリンタの構成を示す説明図、第４図は、本発明に使
用される偏向電極の電極板を示す正面図、第５図および
第６図は、本発明に使用される偏向電極の変形例を示す
側面図である。
１，２，３，１３，１４・・・・・・ノズル、４，５，
６，２０，２１・・・・・・インク粒子の走行路、７，
８，９，７″，８′，９′，２２，２３・・・・・・偏
向電極、１８，１９・・・・・・荷電電極。1 and 2 are explanatory diagrams showing the configuration of a conventional IC jet printer, FIG. 3 is an explanatory diagram showing the configuration of an IC jet printer according to the present invention, and FIG. 4 is an explanatory diagram showing the configuration of an IC jet printer used in the present invention. A front view showing an electrode plate of a deflection electrode, and FIGS. 5 and 6 are side views showing modified examples of the deflection electrode used in the present invention. 1, 2, 3, 13, 14... Nozzle, 4, 5,
6, 20, 21... Travel path of ink particles, 7,
8, 9, 7'', 8', 9', 22, 23... Deflection electrode, 18, 19... Charging electrode.
Claims (1)
各インク粒子の走行路ごとに正、負一対の偏向電極を各
隣接する電極が異極となるように配設するとともに、各
走行路間において隣接する互いに異極となる偏向電極を
誘電体板の両面に、その両電極間の直線距離よりも沿面
距離が長くなるようにそれぞれ取り付けるようにしたこ
とを特徴とするインクジェットプリンタ。1 In charge deflection type with multi-nozzle type,
A pair of positive and negative deflection electrodes are arranged for each travel path of each ink particle so that the adjacent electrodes have different polarities, and adjacent deflection electrodes with different polarities are connected to a dielectric plate between each travel path. An inkjet printer characterized in that the electrodes are attached to both sides of the printer so that the creepage distance is longer than the straight line distance between the two electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071279A JPS5935351B2 (en) | 1979-03-16 | 1979-03-16 | inkjet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3071279A JPS5935351B2 (en) | 1979-03-16 | 1979-03-16 | inkjet printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55123479A JPS55123479A (en) | 1980-09-22 |
| JPS5935351B2 true JPS5935351B2 (en) | 1984-08-28 |
Family
ID=12311250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3071279A Expired JPS5935351B2 (en) | 1979-03-16 | 1979-03-16 | inkjet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935351B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007021752A (en) * | 2005-07-12 | 2007-02-01 | Fujifilm Holdings Corp | Inkjet head, inkjet recorder using the same and inkjet plate making apparatus |
| US8540351B1 (en) * | 2012-03-05 | 2013-09-24 | Milliken & Company | Deflection plate for liquid jet printer |
-
1979
- 1979-03-16 JP JP3071279A patent/JPS5935351B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55123479A (en) | 1980-09-22 |
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