JPS60166462A - Ink jet head - Google Patents
Ink jet headInfo
- Publication number
- JPS60166462A JPS60166462A JP2349284A JP2349284A JPS60166462A JP S60166462 A JPS60166462 A JP S60166462A JP 2349284 A JP2349284 A JP 2349284A JP 2349284 A JP2349284 A JP 2349284A JP S60166462 A JPS60166462 A JP S60166462A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- sheet
- thin plate
- nozzles
- chamber
- 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
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
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
Abstract
Description
【発明の詳細な説明】
ｆａ＋ 発明の技術分野
本発明はインクジェットヘッドの改良に係り、特に圧力
室に連なるインク導出路とノズルとが位置ずれしないよ
うにしたインクジェットヘノ１に関する。DETAILED DESCRIPTION OF THE INVENTION fa+ Technical Field of the Invention The present invention relates to an improvement in an inkjet head, and particularly to an inkjet head 1 in which an ink outlet path connected to a pressure chamber and a nozzle are prevented from being misaligned.
（ｂｌ 技術の背景
印字記録用インクが収容されている圧力室」二に設置さ
れている圧電素子に印字情報に基づいて電圧を印加する
ことにより、該圧電素子を歪ま丑、この歪みによる圧力
を圧力室に伝達し、圧力室に連通して圧力室の一端部に
設けられているノズルより圧力室内に収容されている印
字記録用インクを記録紙上に噴射記録するインクジェッ
ト記録方法は周知である。このインクジェット記録方法
はノンインパクト記録方式であり、印字記録する際の騒
音の発生が少なく、印字記録の品位が高いので、電子計
算機の出力情報を記録するのに最近広く用いられるよう
になってきている。(bl Technological background) By applying a voltage to the piezoelectric element installed in the pressure chamber containing print recording ink based on the printing information, the piezoelectric element is distorted, and the pressure caused by this distortion is reduced. An inkjet recording method is well known in which ink is transmitted to a pressure chamber and is ejected onto recording paper from a nozzle provided at one end of the pressure chamber so as to communicate with the pressure chamber. This inkjet recording method is a non-impact recording method that generates little noise during printing and has high quality printing, so it has recently become widely used for recording information output from electronic computers. There is.
（Ｃ１従来技術と問題点
第１図は従来のインクジェットヘットの平面図で、第２
図は第１図をＩ−ＩＩ線に沿って切断した断面図である
。図示するように従来のインクジエソ１−ヘッドは、内
部に印字記録用インクが収容され圧電素子ＩＡ、 ＩＢ
、・・・・・からの圧力を伝達する圧力室２Ａ、２Ｂ、
・・・・・と、この圧力室２Ａ、２Ｂ、・・・・・の一
端部に連通し端部にインクを記録紙（図示せず）上に噴
出さゼるためのノズル３Ａ 、 ３Ｂ 、・・・・・と
、圧力室２Δ。(C1 Prior art and problems Figure 1 is a plan view of a conventional inkjet head, and Figure 2 is a plan view of a conventional inkjet head.
The figure is a sectional view of FIG. 1 taken along line I-II. As shown in the figure, the conventional inkjet 1-head contains print recording ink and uses piezoelectric elements IA and IB.
, pressure chambers 2A, 2B, which transmit pressure from...
. . . and nozzles 3A, 3B, which communicate with one end of the pressure chambers 2A, 2B, . ...and pressure chamber 2Δ.
２Ｂ・・・・・よりノズル３Δ、３Ｂ、・・・・・に連
通ずるインク導出路４Ａ、４Ｂ・・・・・と、この圧力
室２Ａ、２Ｂ・・・・・にインクを供給するためにイン
クを貯蔵する共通・インク室５と、この共通インク室５
にインクタンク（図示せず）よりインクを供給するイン
ク供給路６とからなっている。従来、このようなインク
シェ。In order to supply ink to the ink outlet paths 4A, 4B, which communicate with the nozzles 3Δ, 3B, and so on from 2B, and the pressure chambers 2A, 2B, and so on. A common ink chamber 5 that stores ink, and a common ink chamber 5 that stores ink.
and an ink supply path 6 for supplying ink from an ink tank (not shown). Traditionally, inkshe like this.
トヘノドは、第１図、第２図に示すように、例えばステ
ンレスのような薄板１１に前記した圧力室２Δ。As shown in FIGS. 1 and 2, the pressure chamber 2Δ is formed in a thin plate 11 made of stainless steel, for example.
２Ｂ・・・・・、ノズル３Ａ 、 ３Ｂ・・・・・、イ
ンク導出路４Ａ、４Ｂ・・・・・、共通インク室５等を
、薄板の厚さ方向に所定の深さまでエツチングによって
形成したインク流路板となる薄板１１と、圧電素子ＩＡ
、 ＩＢ・・・・の圧力を伝達する振動板となるステン
レスの薄板１２とが溶接によって接続加工された後、こ
の薄板１２上に圧電素子ｌ＾、ＩＴＪ・・・・・が各圧
力室２Ａ 、 ２Ｂ・・・・・上に接着剤等を用いて接
着固定され、更にインク供給管７が接着材等により取り
つげられて、図示するようなインクジエソ１−ヘッドを
得ていた。2B..., nozzles 3A, 3B..., ink outlet channels 4A, 4B..., common ink chamber 5, etc. were formed by etching to a predetermined depth in the thickness direction of the thin plate. Thin plate 11 serving as an ink flow path plate and piezoelectric element IA
, IB... are connected by welding to a stainless steel thin plate 12 which becomes a diaphragm for transmitting the pressure, and piezoelectric elements l^, ITJ... are placed on this thin plate 12 in each pressure chamber 2A. , 2B, etc., using an adhesive or the like, and the ink supply pipe 7 was attached with an adhesive or the like to obtain an inkjet head as shown in the figure.
然し、このような従来のインクジェノ）−ヘット′は、
ノズル３Ａ、３Ｂ・・・・・の深さ方向の寸法が０．０
４＋＝ｍ〜０．０５ｎで圧力室２Ａ 、 ２Ｂ・・・・
・や、インク導出路心。However, such conventional inkgeno)-het'
The depth dimension of nozzles 3A, 3B... is 0.0
4+=m~0.05n, pressure chambers 2A, 2B...
・Ya, ink lead-out path.
４Ｂ・・・・・の深さ方向の寸法が規制されて浅くなる
ため、インクがこのノズルに充分供給されない欠点があ
った。Since the dimension in the depth direction of 4B is regulated and becomes shallow, there is a drawback that ink is not sufficiently supplied to this nozzle.
そこで第３図に示すように、各圧力室２Δ、２Ｉ３・・
・と、インク導出路４Ａ、４Ｂ・・・・・と共通インク
室５とが貫通されて形成されたステンレス製の薄板２１
と、この薄板２１の上に各圧力室２／ｌ 、 ２Ｂ・・
・・・と、インク導出路４八、４Ｂ・・・・・と、共通
インク室５とノズル３八。Therefore, as shown in Fig. 3, each pressure chamber 2Δ, 2I3...
A stainless steel thin plate 21 formed by passing through the ink outlet channels 4A, 4B, and the common ink chamber 5.
And, on top of this thin plate 21, each pressure chamber 2/l, 2B...
. . . , the ink outlet passages 48, 4B, . . . , the common ink chamber 5 and the nozzle 38.
３Ｂ ・・・・・とを貫通して形成したステンレス装の
ｉ％７板２２とを重ね合わせ、この薄板２２の上にイン
ク供給路を有するステンレス製の薄板２３を重ね、また
薄板２１の下部に平板状の薄板２４を設置し、た状態で
、これ等薄板２Ｌ２２，２３．２４を溶接し”ζ接続し
た後、薄板２３上にインク供給管７および圧電素子ＩＡ
、 Ｉｌｌ・・・・・を樹脂等により接着してインクジ
ェノ１−ヘット構造をｉｑていた。3B . . . are stacked together with a stainless steel i%7 plate 22 formed by penetrating through the thin plate 22, a stainless steel thin plate 23 having an ink supply path is stacked on top of this thin plate 22, and the lower part of the thin plate 21 A flat thin plate 24 is installed on the thin plate 23, and after welding and connecting these thin plates 2L22, 23.24, the ink supply pipe 7 and the piezoelectric element IA are placed on the thin plate 23.
, Ill... were adhered with resin or the like to form an inkgeno 1-head structure.
然し、このような構造であるとノズル３Ａ、３Ｂ・・・
・・の中心軸と、インク導出路４Ａ、４Ｂ・・・・・と
の中心軸が合致せず位置ずれを生じ、インク粒子の噴射
が不安定になったりへ粒子化特性がばらつくといった問
題点があった。However, with such a structure, the nozzles 3A, 3B...
The central axes of ... and the central axes of the ink outlet paths 4A, 4B, etc. do not match, resulting in positional deviation, which causes problems such as unstable jetting of ink particles and variations in atomization characteristics. was there.
（ｄ）８明の目的
本発明は上記した問題点を除去するもので、ノズルの中
心軸の位置と、圧力室より連なるインク導出路の中心の
位置とが精度良く位置ずれしないように合致し、更に圧
力室よりノズルに連なるインク導出路が深く形成でき、
インクの流体抵抗を低くした状態でインクがノズルに充
分供給できるよ・うにした、高精度で、かつ高信頼度の
新規なインクジェットヘッドの提供を目的とするもので
ある。(d) 8th Purpose of the Invention The present invention is intended to eliminate the above-mentioned problems, and is to ensure that the position of the central axis of the nozzle and the position of the center of the ink outlet path connected from the pressure chamber match with high precision so as not to be misaligned. Furthermore, the ink outlet path connected to the nozzle can be formed deeper than the pressure chamber.
The object of the present invention is to provide a novel inkjet head with high accuracy and reliability, which is capable of sufficiently supplying ink to a nozzle while keeping the fluid resistance of the ink low.
ｔｅｌ 発明の構成
かかる目的を達成するための本発明のインクジェノトヘ
ソｌ”は、平板状の第１の薄板上に、インクを収容しか
つ圧電素子の圧力を伝達する圧力室と、圧力室に連なる
インク導出路と、圧力室にインクを供給する共通インク
室とを貫通して形成し、かつインク導出路に連なり、記
録紙にインクを噴射するためのノズルを所定の寸法の溝
形状に形成した第２の薄板を債閣し、該第２の薄板」−
に共通インク室にインクを供給するインク供給管を設け
た第３の薄板を積層し、前記第１．第２．第３の薄板の
それぞれを接合し、該第１の薄板と第３の薄板の少なく
とも一方の前記圧力室と対向する位置に前記圧電素子を
設けてなることを特徴とするものである。tel Structure of the Invention To achieve the above object, the ink generator of the present invention has a pressure chamber on a flat first thin plate, a pressure chamber for accommodating ink and transmitting the pressure of a piezoelectric element, and a pressure chamber for transmitting the pressure of a piezoelectric element. A nozzle is formed in the shape of a groove with predetermined dimensions to penetrate the continuous ink lead-out path and a common ink chamber that supplies ink to the pressure chamber, and is connected to the ink lead-out path to eject ink onto the recording paper. The second thin plate that has been removed is fixed, and the second thin plate is
A third thin plate provided with an ink supply pipe for supplying ink to the common ink chamber is laminated on the first thin plate. Second. The third thin plate is bonded to each other, and the piezoelectric element is provided at a position facing the pressure chamber of at least one of the first thin plate and the third thin plate.
（ｆｌ 発明の実施例
以下図面を用いて本発明の一実施例につき６イー細に説
明する。Embodiment of the Invention An embodiment of the invention will be described in detail below with reference to the drawings.
第４図は本発明のインクジェットヘットの構造を示す断
面図、第５図は本発明のインクジェットヘッド形成用イ
ンク流路板の要部平面図、第６図は第５図を］−Ｉ］線
に沿って切断した断面図、第７図は本発明のインクジェ
・ノ１〜ヘットを形成するのに用いるインク流路板を製
造する際の、工程の一部を示す説明図である。FIG. 4 is a cross-sectional view showing the structure of the inkjet head of the present invention, FIG. 5 is a plan view of essential parts of the ink channel plate for forming the inkjet head of the present invention, and FIG. 6 is a cross-sectional view showing the structure of the inkjet head of the present invention. FIG. 7 is an explanatory diagram showing a part of the process in manufacturing the ink channel plate used to form the inkjet No. 1 to head of the present invention.
第４図、第５図、第６図に示すように本発明のインクシ
ェツトヘッドは、底板となるステンレス裂の平板状の第
１の薄板３１の上に厚さが８０〜２００１１ｍのステン
レス製のインク流路板となる第２の薄板３２を、ノズル
３Ａ、３Ｂ・・・・・の部分のみ深さ方向の寸法ｔ１が
３５〜４０μｍとなるようにして設置する。この第２の
薄板３２は、ノズル論、３Ｂ・・・・・部分のみ、薄板
３２の厚さの寸法に対して約１／２の＼１法になるよう
にエツチングし、圧力室２Ａ、２Ｂ・・・・・および、
インク導出１？δ４Ａ、４Ｂ・・・・・および、共通イ
ンク室５の部分はエツチングにより加工されている。そ
してこの上にはインク供給路６を有するステンレス製の
第３の薄板３３積層する。そしてこれら第１の薄板３１
、および第２の薄板３２、および第３の薄板３３を溶接
して接続した後、第３の薄板３３」二にインク供給管７
、および圧電素子ＩＡ、１Ｂ・・・・・を接着剤を用い
て固着することにより第４図に示す本発明のインクジェ
ノ）〜ヘノｌ′を得ることができる。このようなインク
流路板となる第２の薄板３２を形成するには、第７図に
示すようにステンレス製の薄板３２の表面側の共通イン
ク室５形成予定領域、圧力室２Ａ、 ２Ｂ・・・・・形
成予定領域、インク導出路４Ａ、４Ｂ・・・・・形成予
定領域、ノズル３Ａ、３Ｂ・・・・・形成予定領域を除
いた箇所にボトレジヌｌ−１１Ｓｉｉ４４Ａを塗布する
。またこのステンレス製の藁板３２の裏面側の共通イン
ク室５形成予定領域、■刃室２Ａ、２Ｂ・・・・・形成
予定領域、インク導出路４Ａ、 ４Ｂ・・・・・形成予
定領域を除いた箇所、ずなわらノズル３Ａ、３Ｂ・・・
・・形成予定領域上を含めた箇所にボトレジスト股４４
Ｂを塗布した状態で、この薄板３２をエツチング液に浸
漬させ、薄板３２の表側と裏側より同時にエツチング加
工する。このようにするとインク導出路４Ａ、４Ｂ・・
・・・の深さ方向の寸法゛が薄板３３の厚さ寸法に等し
い寸法まで深く形成されるので、ノズル３Ａ 、 ３Ｂ
・・・・・に円滑に流体抵抗の少ない状態でインクが供
給できる。またノズル３Ａ 、 ３Ｂ・・・・・の中心
軸とインク導出路４Ａ、 ４Ｂ・・・・・の中心軸との
位置ずれも生しなくなり、高精度に加工されたインクジ
ェットヘッドが得られるようになる。As shown in FIGS. 4, 5, and 6, the ink sheet head of the present invention has a stainless steel sheet having a thickness of 80 to 20,011 m on top of a flat first thin plate 31 made of stainless steel, which serves as a bottom plate. A second thin plate 32 serving as an ink flow path plate is installed so that the depth direction dimension t1 is 35 to 40 μm only at the nozzles 3A, 3B, . . . . This second thin plate 32 is etched so that only the nozzle theory, 3B... portion is approximately 1/2 of the thickness of the thin plate 32, and the pressure chambers 2A, 2B are etched. ·····and,
Ink derivation 1? δ4A, 4B, . . . and the common ink chamber 5 are processed by etching. A third thin plate 33 made of stainless steel and having an ink supply path 6 is laminated thereon. and these first thin plates 31
, the second thin plate 32, and the third thin plate 33 are welded and connected, and then the ink supply pipe 7 is connected to the third thin plate 33''.
and piezoelectric elements IA, 1B, . In order to form such a second thin plate 32 that serves as an ink flow path plate, as shown in FIG. . . . Formation area, ink outlet channels 4A, 4B . . . Formation area, nozzles 3A, 3B . . . Apply Botrezine l-11Sii 44A to areas other than the formation area. Also, on the back side of this stainless steel straw plate 32, the area where the common ink chamber 5 is scheduled to be formed, the area where the blade chambers 2A, 2B...are scheduled to be formed, the ink outlet channels 4A, 4B...are the areas where the formation is planned. Removed parts, Zunawara nozzles 3A, 3B...
・Bottom resist crotch 44 in the area including the area to be formed
With B applied, the thin plate 32 is immersed in an etching solution and etched from the front and back sides of the thin plate 32 at the same time. In this way, the ink outlet paths 4A, 4B...
Since the nozzles 3A and 3B are formed deeply so that the dimension in the depth direction of the nozzles 3A and 3B is equal to the thickness dimension of the thin plate 33,
Ink can be supplied smoothly with little fluid resistance. In addition, there is no misalignment between the central axes of the nozzles 3A, 3B, etc. and the central axes of the ink outlet paths 4A, 4B, etc., so that an inkjet head machined with high precision can be obtained. Become.
（ｇ＋ 発明の効果
以」二述べたように本発明のインクジェットヘッドムこ
まれば、ノズルおよびインクの通路を一枚の薄板に同時
に形成できるので、ノズルとインク導出路との位置ずれ
を生じることがなくなり、またインクの流体抵抗を少な
くして、インクが田川にノズルに供給されるようになる
。従って、インクの粒子化周波数を増大させた場合でも
インク粒子ｉＭに変動をきたさない粒子化特性の良好な
インクシェツトヘッドが得られる効果を牛しる。(g+ Effects of the Invention) As mentioned in 2, the problem with the inkjet head of the present invention is that the nozzle and the ink passage can be formed simultaneously on one thin plate, so there is no possibility of misalignment between the nozzle and the ink outlet path. In addition, the fluid resistance of the ink is reduced, and the ink is supplied to the nozzle in a continuous manner.Therefore, even when the ink atomization frequency is increased, the atomization characteristics do not cause fluctuations in the ink particles iM. We will show you the effects of a good ink sheet head.
第１図は従来のインクジェットヘットの平面図、第２図
は第１図をｒ−ｎ線に沿って切断した断面図、第３図は
従来のインクジエソ１−ヘノ１″の断面図、第４図は本
発明のインクジェットヘノｌ−の構造を示す断面図、第
５図は本発明のインクジェノ１−ヘッドの形成用薄板の
要部平面図、第６図は第５図をＩ−Ｈ線に沿って切断し
た断面図、第７図は本発明のインクジェノ１−ヘッドの
形成用薄板を製造する際の工程の一部を示す説明図であ
る。
図に於いてＩＡ、ＩＢ、・・・・・ば圧電素子、２Ａ、
２Ｂ、・・・・・は圧力室、３Ａ、３Ｂ、・・・・・は
ノズル、４Ａ、 ４Ｂ・旧・はインク導出路、５ば共通
インク収容室、６はインク供給路、７ばインク供給管、
１１，１２，２Ｌ２２，２３，２４゜３１．３２．３３
はステンレス薄板、４４八、４４Ｂはボトレジ第１図
第４図
４４Ｄ ｔ４ｄFig. 1 is a plan view of a conventional inkjet head, Fig. 2 is a cross-sectional view of Fig. 1 taken along line r-n, Fig. 3 is a cross-sectional view of a conventional inkjet head 1-heno 1'', and Fig. 4 is a sectional view of a conventional inkjet head. The figure is a cross-sectional view showing the structure of the inkjet head of the present invention, FIG. 7 is an explanatory view showing a part of the process of manufacturing the thin plate for forming the inkgeno 1 head of the present invention. In the figure, IA, IB, . . . ... Piezoelectric element, 2A,
2B, . . . are pressure chambers, 3A, 3B, . supply pipe,
11,12,2L22,23,24゜31.32.33
is a thin stainless steel plate, 448, 44B is a bottle register, Fig.
Claims (1)
の圧力を伝達する圧力室と、圧力室に連なるインク導出
路と、圧力室にインクを供給する共通インク室とを貫通
して形成し、かつインク導出路に連なり、記録紙にイン
クを噴射するだめのノズルを所定の寸法の溝形状に形成
した第２の薄板を積層し、該第２の薄板上に共通インク
室にインクを供給するインク供給路を形成した第３の薄
板を積層し、前記第１．第２．第３の薄板のそれぞれを
接合してなることを特徴とするインクジエソ１へヘッド
。A pressure chamber for accommodating ink and transmitting the pressure of the piezoelectric element, an ink outlet path connected to the pressure chamber, and a common ink chamber for supplying ink to the pressure chamber are passed through the first flat plate. A second thin plate connected to the ink outlet path and having a groove shape of a predetermined size with a nozzle for ejecting ink onto the recording paper is laminated, and ink is injected into the common ink chamber on the second thin plate. A third thin plate forming an ink supply path for supplying the ink is laminated, and the first thin plate is laminated. Second. An inkjet head characterized by being formed by joining each of the third thin plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2349284A JPS60166462A (en) | 1984-02-10 | 1984-02-10 | Ink jet head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2349284A JPS60166462A (en) | 1984-02-10 | 1984-02-10 | Ink jet head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60166462A true JPS60166462A (en) | 1985-08-29 |
| JPH0468151B2 JPH0468151B2 (en) | 1992-10-30 |
Family
ID=12111999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2349284A Granted JPS60166462A (en) | 1984-02-10 | 1984-02-10 | Ink jet head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60166462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100450532B1 (en) * | 2002-02-26 | 2004-09-30 | 주식회사 바드 | Printing-head unit for color ink-jet printer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50140227A (en) * | 1974-04-26 | 1975-11-10 | ||
| JPS5590371A (en) * | 1978-12-28 | 1980-07-08 | Seiko Epson Corp | Ink jet recording head |
| JPS56133171A (en) * | 1980-03-21 | 1981-10-19 | Seiko Epson Corp | Ink jet printing head |
| JPS5787956A (en) * | 1980-11-21 | 1982-06-01 | Fujitsu Ltd | Ink jet heat and manufacture thereof |
-
1984
- 1984-02-10 JP JP2349284A patent/JPS60166462A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50140227A (en) * | 1974-04-26 | 1975-11-10 | ||
| JPS5590371A (en) * | 1978-12-28 | 1980-07-08 | Seiko Epson Corp | Ink jet recording head |
| JPS56133171A (en) * | 1980-03-21 | 1981-10-19 | Seiko Epson Corp | Ink jet printing head |
| JPS5787956A (en) * | 1980-11-21 | 1982-06-01 | Fujitsu Ltd | Ink jet heat and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100450532B1 (en) * | 2002-02-26 | 2004-09-30 | 주식회사 바드 | Printing-head unit for color ink-jet printer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0468151B2 (en) | 1992-10-30 |
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