JPS59135165A - Nozzle for inkjet printer - Google Patents
Nozzle for inkjet printerInfo
- Publication number
- JPS59135165A JPS59135165A JP969383A JP969383A JPS59135165A JP S59135165 A JPS59135165 A JP S59135165A JP 969383 A JP969383 A JP 969383A JP 969383 A JP969383 A JP 969383A JP S59135165 A JPS59135165 A JP S59135165A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- pore
- hole
- holes
- short tube
- 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
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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/1433—Structure of nozzle plates
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はコンピュータに連動するインクジェットプリン
タ用ノズルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nozzle for an inkjet printer that is linked to a computer.
インクジェットグリンタは−ａ小径のインク粒子を発生
させて紙面に噴出させる機構であるため、ノズルの孔径
は数１０ミクロン程度の微細孔を必要とし、これによっ
て乱流のない層流状態のインクジェットが形成されなけ
ればならない。そのため、ノズル先端部は一定直径のス
トレート部と後方に向って単葉双曲面的な広がりをもつ
形状が理想的であるとされている。Inkjet glitter is a mechanism that generates small-diameter ink particles and jets them onto the paper surface, so the nozzle requires microscopic holes with a diameter of several tens of microns, which creates an inkjet in a laminar flow state without turbulence. It must be. Therefore, it is said that the ideal shape of the nozzle tip is a straight part with a constant diameter and a single-plane hyperboloid-like expansion toward the rear.
従来このようなインクジェットノズルを製作する方法と
しては、たとえば第１図（ａｌに示すように。A conventional method for manufacturing such an inkjet nozzle is as shown in FIG. 1 (al).
ルビー、サファイヤ等を基材として、これにまず研磨加
工によって曲率半径数１００ミクロン程度の球面ａを設
け、ついでレーザービーム等を用いて数１０ミクロンの
微細孔すを形成し、この内面 ゛をダイヤモンド砥粒
等で仕上げする方法が知られているが、この方法ではレ
ーザービームにより微細孔すを形成させる際に２その中
心軸が球面ａの中心軸に対し振れ易く、また微細孔すの
内面仕上げ時に、その周縁部が欠落しやすいという難点
があった。Using ruby, sapphire, etc. as a base material, first, a spherical surface a with a radius of curvature of several hundred microns is formed by polishing, then a microscopic hole of several tens of microns is formed using a laser beam, etc., and this inner surface is made of diamond. A method of finishing with abrasive grains, etc. is known, but in this method, when forming micro holes with a laser beam, the center axis of the hole tends to swing relative to the center axis of the spherical surface a, and the inner surface of the micro hole cannot be finished. Sometimes, there was a problem in that the peripheral part was easily lost.
また、エレクトロフォーミング法によって微細孔を形成
させる方法が知られている。この方法では第１図［ｂｌ
に示すように微細孔の内周面に放射状に延びる細かい凹
溝Ｃからなる縞模様が形成され易いと共に層流状のイン
クジェットを形成するための一定直径領域がほとんど形
成できない不利があった。Furthermore, a method of forming micropores by electroforming is known. In this method, Figure 1 [bl
As shown in FIG. 2, there is a disadvantage that a striped pattern consisting of fine grooves C extending radially is likely to be formed on the inner peripheral surface of the micropores, and a constant diameter area for forming a laminar inkjet can hardly be formed.
さらに他の方法として一第１図（Ｃ１に示すように、基
材の片面にエツチング法によって凹陥部ｄを形成し、バ
イトを用いて微細孔ｅを設ける方法、あるいは第１図（
ｄｌに示すよう（二基材を両面からエツチングして微細
孔を形成させる方法が知られているが、ノズルのＪｌ’
６状に再現性が乏しく、生産性にも劣るものであった。Still another method is to form a recess d on one side of the base material by etching, as shown in Fig. 1 (C1), and to form a fine hole e using a cutting tool;
As shown in dl (a method is known in which micropores are formed by etching two substrates from both sides, the nozzle Jl'
6, the reproducibility was poor and the productivity was also poor.
上記のように従来の方法で得られたノズルは。The nozzle obtained by the conventional method as described above.
種々の膚を点があり一浬続噴射における層流の形成が容
易でなかった。There were various skin points, and it was not easy to form a laminar flow in one continuous injection.
本発明者らはこの点について種々研究の結果。The present inventors have conducted various studies on this point.
従来公知の方法では製作で赤なかった完全なノズルを得
ることができ、ここに新規なノズルとして提供しようと
するのであって１本発明のインクジェットプリンタ用ノ
ズルは、インク溶液の通孔からなる短管、細孔をもつア
プローチ槻および微細孔をもつオリフィス板を、各孔の
中心を合せてｉ沈積層し、拡散溶接により一体化してな
ることを特徴とするものである。It is possible to obtain a complete nozzle that could not be manufactured using conventionally known methods, and we would like to provide this as a new nozzle.1. It is characterized in that a pipe, an approach truss with fine holes, and an orifice plate with fine holes are deposited in layers with the centers of each hole aligned, and are integrated by diffusion welding.
以下これを第２〜４図について詳しく説明すると本発明
のインクジェットプリンタ用ノズルは、短管１．アプロ
ーチ槻２およびオリフィス板３の３個の部材からなり、
短管１は通常数酬ないし数１（１＋ｍ程度の長さで、中
空部がインク溶液の通孔４となっている。アプローチ槻
２は、短管１と同じ外径であるが中心部に通孔４よりも
径の小さい細孔５が設けられている。この細孔５は第３
図（ｅ１５二示すように一定の長さのストレート部をも
つ一定直径であるか（ｆ）（二示すように一端に向って
単葉双曲面的にひろがった形状である。したがって積厚
は層流形成に適当するストレート部と孔径によって適当
に１゛理される。This will be explained in detail below with reference to FIGS. 2 to 4. The inkjet printer nozzle of the present invention has a short tube 1. It consists of three members: an approach truss 2 and an orifice plate 3,
The short tube 1 usually has a length of about 1 to 1 (1+ m), and the hollow part serves as a through hole 4 for the ink solution.The approach tube 2 has the same outer diameter as the short tube 1, but has a hole in the center. A pore 5 having a smaller diameter than the through hole 4 is provided.
Either it has a constant diameter with a straight part of a constant length as shown in Figure (e152), or it has a shape that expands like a monoplane hyperboloid toward one end as shown in (f) (2).Therefore, the stacking thickness is laminar. The straight part and hole diameter are appropriately processed.
オリフィス板３はアプローチ槻２と同じ外径であるが、
＃１２の厚さは数１０乃ｍ〜数１００μｍ、中心部の孔
径は数１０ｐｍが適当である。The orifice plate 3 has the same outer diameter as the approach plate 2, but
The thickness of #12 is suitably several tens to several hundred μm, and the diameter of the pore at the center is several tens of pm.
前記アプローチｆｉ２２、オリフィス板３はパンチプレ
ス法による穿孔であるため高精度の加工ができ、ストレ
ート部の長さの管理は、′ｈ厚のｇ理で可能であるため
きわめて簡単である。Since the approach fi 22 and the orifice plate 3 are perforated by the punch press method, they can be processed with high precision, and the length of the straight portion can be controlled with a g-thickness of 100 mm, making it extremely easy.
本発明のノズルは一前記短管１．アグローチＲｉ２およ
びオリフィス板３をその各孔の中心を合せて、積層し、
３部材の拡散接合によって第４図に示すように一体化し
てなるもので、その構成部材は各々別個に加工でき、細
孔微細孔の形成はそれ自体それ程熟練を要しない加工技
術によって可能であるから、本発明によれば理想形に近
いインクジェットノズルを高い寸法精度のもとに再現性
よく製作でき、特にインクジェットに乱流を生じさせな
いノズル先端部の一定直径をもつストレート部の長さ管
理が部材シートの厚み管理だけで容易に達成できるので
、実用的価値はきわめて大きい。The nozzle of the present invention includes one short tube 1. Aggroche Ri2 and orifice plate 3 are stacked with the centers of their respective holes aligned,
It is made up of three parts that are integrated by diffusion bonding as shown in Figure 4, and each of the constituent parts can be processed separately, and the formation of the micropores itself is possible by a processing technique that does not require much skill. Therefore, according to the present invention, an inkjet nozzle close to the ideal shape can be manufactured with high dimensional accuracy and with good reproducibility, and in particular, the length of the straight part with a constant diameter at the tip of the nozzle can be controlled to prevent turbulence in the inkjet. This can be easily achieved just by controlling the thickness of the component sheet, so it has extremely great practical value.
なお１本発明のノズルを構成する各部材は、インク溶液
Ｃ二反応しない金属部材、セラミック部材等が適当であ
り一取り付けるプリント本体の構造に応じて第５図（イ
）（二示すよ５に先＠ｇを斜線に沿って切断し、 （１
ニア１のようＣ二取付は部りにスゲリューを設け、Ｉ、
Ｊのようにフランジｉを設け、あるいはに）のように取
付は部にテーパ（θ）をつけるなどして各種形状に加工
し、あるいはミラー仕上げをすることができる。Note that each member constituting the nozzle of the present invention is suitably made of a metal member, a ceramic member, etc. that does not react with the ink solution. Cut the tip @g along the diagonal line, (1
For installation of C2 like near 1, a sugeryu is provided on the part, I,
It can be processed into various shapes by providing a flange i as in J, or by adding a taper (θ) to the mounting part as in ), or it can be finished with a mirror finish.
第１図（ａｔ〜（ｄｌはそれぞれ公知の方法によって形
成したインクジェットノズルの形状を例示した断面図で
ある。
第２図は本発明によるノズルの構成部材の断面図であり
一第３図ｔｅｌ、ｆｆ＋は第２図の一部２の拡大図であ
る。
第４図は本発明のインクジェットノズルの縦断面図であ
る。
第５図は第４図のノズルの加工態様を示す縦断面図であ
る。
１、・・・短管、 ２・・・アプローチ板。
３・・・オリフィス板、 ４・・・通孔、 ５・・
・細管。
６・・・微細孔、 ７・・・ノズル。
第１図FIG. 1 (at to (dl) are cross-sectional views illustrating the shapes of inkjet nozzles formed by known methods, respectively. FIG. 2 is a cross-sectional view of constituent members of a nozzle according to the present invention. ff+ is an enlarged view of part 2 of FIG. 2. FIG. 4 is a longitudinal cross-sectional view of the inkjet nozzle of the present invention. FIG. 5 is a longitudinal cross-sectional view showing a processing mode of the nozzle of FIG. 4. 1. Short pipe, 2. Approach plate. 3. Orifice plate, 4. Through hole, 5.
・Tubules. 6... Micropore, 7... Nozzle. Figure 1
Claims (1)
ローチ板および微細孔をもつオリフィス板を御名孔の中
心を合せて順次積層し、拡散溶接により一体化してなる
ことを特徴とするインクジェットプリンタ用ノズル。 ２） 前記アプローチ管における一定＠径の細孔が一短
管に向って単葉双曲面的法がりをもつことを特徴とする
特許請求の範ｕ１４第１項記載のインクジェットプリン
タ用ノズル。[Scope of Claims] l) A short tube consisting of holes for ink solution - an approach plate with fine holes and an orifice plate with fine holes are laminated one after another with the center of the famous hole aligned, and are integrated by diffusion welding. A nozzle for an inkjet printer characterized by: 2) The nozzle for an inkjet printer according to claim 14, wherein the pores of a constant diameter in the approach tube have a monoplane hyperboloid slope toward the short tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP969383A JPS59135165A (en) | 1983-01-24 | 1983-01-24 | Nozzle for inkjet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP969383A JPS59135165A (en) | 1983-01-24 | 1983-01-24 | Nozzle for inkjet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59135165A true JPS59135165A (en) | 1984-08-03 |
Family
ID=11727298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP969383A Pending JPS59135165A (en) | 1983-01-24 | 1983-01-24 | Nozzle for inkjet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59135165A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043955A (en) * | 1973-08-21 | 1975-04-21 | ||
| JPS50102211A (en) * | 1974-01-09 | 1975-08-13 | ||
| JPS57208250A (en) * | 1981-06-18 | 1982-12-21 | Nitsukooshi Kk | Preparation of ink jet nozzle |
-
1983
- 1983-01-24 JP JP969383A patent/JPS59135165A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5043955A (en) * | 1973-08-21 | 1975-04-21 | ||
| JPS50102211A (en) * | 1974-01-09 | 1975-08-13 | ||
| JPS57208250A (en) * | 1981-06-18 | 1982-12-21 | Nitsukooshi Kk | Preparation of ink jet nozzle |
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