JPH05261918A - Ink jet head - Google Patents
Ink jet headInfo
- Publication number
- JPH05261918A JPH05261918A JP6239392A JP6239392A JPH05261918A JP H05261918 A JPH05261918 A JP H05261918A JP 6239392 A JP6239392 A JP 6239392A JP 6239392 A JP6239392 A JP 6239392A JP H05261918 A JPH05261918 A JP H05261918A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- ink chamber
- pressure
- dummy
- chambers
- 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
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は印字データの入力を受け
た時点で、インク滴を飛翔させ、このインク滴により記
録用紙にドットを形成させるオンデマンド方式のインク
ジェットヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-demand type ink jet head for ejecting ink droplets when receiving print data and forming dots on a recording sheet by the ink droplets.
【０００２】[0002]
【従来の技術】ノズルを備えたインク室を設け、圧電素
子で構成された圧力発生部材の変位によってインク室の
インク圧力を高め、ノズルからインク滴として吐出する
タイプのインクジェットヘッドにおいて、インク滴を吐
出する瞬間にインク室内に発生するインク圧力が１気圧
程度と大きいため、インク室を囲むインク室壁の剛性は
吐出特性に極めて重要である。すなわち、剛性が高いと
充分にインク室のインク圧力が高まり、インク滴の吐出
速度、吐出体積ともに大きくなる。一方、インク室を囲
むインク室壁の剛性が前記インク室壁より低いと、イン
ク圧力が前記圧力より低く、よってインク滴の吐出速
度、吐出体積も小さくなるといった特性がある。そのた
め、従来の構成のインク室においては、最端部のインク
室でインク室壁が厚く剛性が大きいため、そのインク室
のみインク滴の吐出速度、吐出体積が大きくなる現象が
起こる。しかし、印字品質においては一部のインク滴の
み吐出速度、吐出体積が大きいことは欠点として作用
し、記録媒体上に形成されるドット径が大きい、印字濃
度が高いという現象となって現れ、印字に縞状のむらが
生じる問題があった。2. Description of the Related Art In an ink jet head of a type in which an ink chamber having a nozzle is provided, the ink pressure in the ink chamber is increased by the displacement of a pressure generating member composed of a piezoelectric element and the ink is ejected from the nozzle as an ink droplet. Since the ink pressure generated in the ink chamber at the moment of ejection is as large as about 1 atm, the rigidity of the ink chamber wall surrounding the ink chamber is extremely important for the ejection characteristics. That is, if the rigidity is high, the ink pressure in the ink chamber is sufficiently increased, and the ejection speed and the ejection volume of the ink droplet are increased. On the other hand, when the rigidity of the ink chamber wall surrounding the ink chamber is lower than that of the ink chamber wall, the ink pressure is lower than the pressure, so that the ejection speed and ejection volume of the ink droplet are also reduced. Therefore, in the ink chamber having the conventional configuration, the ink chamber wall at the endmost portion is thick and has a large rigidity, so that a phenomenon occurs in which the ink droplet ejection speed and ejection volume increase only in that ink chamber. However, in terms of print quality, the fact that the ejection speed and ejection volume of only some ink droplets are large acts as a drawback, and it appears as the phenomenon that the dot diameter formed on the recording medium is large and the printing density is high. There was a problem that striped unevenness occurred on the surface.
【０００３】[0003]
【発明が解決しようとする課題】記録ヘッドの小型化、
高密度化を図るほど、インク室は小さくなる。よって、
インク室壁の肉厚も薄くなり、インク室最端部の肉厚の
剛性とそれ以外のインク室の肉厚の剛性との差が大きく
なってくる。そのために、全てのインク室において、イ
ンク室壁の剛性を均一にすることは、極めて重要とな
る。そこで、本発明の目的は、印字吐出に使用される全
てのインク室において、インク室壁の剛性を均一にする
ことによって、インク滴の吐出速度、吐出体積のバラつ
きをなくし、縞状のムラがない良好な印字を行えるヘッ
ドを実現することにある。Reducing the size of the recording head,
The higher the density, the smaller the ink chamber. Therefore,
The wall thickness of the ink chamber wall also becomes thin, and the difference between the wall thickness rigidity of the ink chamber outermost portion and the wall thickness rigidity of the other ink chambers becomes large. Therefore, it is extremely important to make the rigidity of the ink chamber wall uniform in all the ink chambers. Therefore, an object of the present invention is to make the rigidity of the ink chamber wall uniform in all the ink chambers used for print ejection, thereby eliminating variations in ink droplet ejection speed and ejection volume, resulting in striped unevenness. It is to realize a head capable of excellent printing.
【０００４】[0004]
【課題を解決するための手段】本発明のインクジェット
ヘッドは、駆動電圧によって圧力発生部材を変位させ、
インク室のインク圧力を高めることによってインク滴を
吐出するインクジェットヘッドにおいて、インク室列の
少なくとも一端に少なくとも１つのダミーインク室が設
けられていることを特徴とする。また、係るインクジェ
ットヘッドにおいて、ノズル形成基板に前記ダミーイン
ク室に通じるノズルが設けられていることを特徴とす
る。また、係るインクジェットヘッドにおいて、前記ダ
ミーインク室に対向して前記圧力発生部材が配置されて
いることを特徴とする。In the ink jet head of the present invention, a pressure generating member is displaced by a driving voltage,
In an inkjet head that ejects ink droplets by increasing the ink pressure in the ink chamber, at least one dummy ink chamber is provided at at least one end of the ink chamber row. Further, in the inkjet head, the nozzle forming substrate is provided with a nozzle communicating with the dummy ink chamber. Further, in the inkjet head, the pressure generating member is arranged so as to face the dummy ink chamber.
【０００５】[0005]
【実施例】以下、本発明の詳細を実施例により図面を参
照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings.
【０００６】図１は本発明の１実施例のインクジェット
ヘッドの斜視図である。圧力発生部材列１５０、１５
１、１５２はその長手方向の約半分の一面を基板１４に
固着されつつ、固着されない半分の先端を弾性板３０に
接合されている。弾性板３０の上にはインク室１７１が
配置されインクで満たされている。インク室形成基板３
６上にはノズル形成基板３３が接合され、インク室１７
１に連続してノズル３４が形成されている。FIG. 1 is a perspective view of an ink jet head according to one embodiment of the present invention. Pressure generating member row 150, 15
About one half of the longitudinal direction of each of the reference numerals 1 and 152 is fixed to the substrate 14, and the tip of the other half is fixed to the elastic plate 30. An ink chamber 171 is arranged on the elastic plate 30 and filled with ink. Ink chamber forming substrate 3
The nozzle forming substrate 33 is bonded onto the ink chamber 6, and the ink chamber 17
The nozzle 34 is formed continuously from No. 1.
【０００７】図２は本発明のインクジェットヘッドの断
面図である。インク室１７０、１７１、１７２、１７
３、１７４、１７５の両端にはダミーインク室１６０、
１６１が形成されている。圧力発生部材１５０、１５
１、１５２、１５３、１５４、１５５がインク室１７
０、１７１、１７２、１７３、１７４、１７５に１対１
で配置されていが、ダミーインク室１６０、１６１に対
応する圧力発生部材、ノズルは配置されていない状態で
ある。FIG. 2 is a sectional view of the ink jet head of the present invention. Ink chambers 170, 171, 172, 17
Dummy ink chamber 160 is provided at both ends of 3, 174 and 175.
161 is formed. Pressure generating members 150, 15
1, 152, 153, 154, and 155 are ink chambers 17.
1 to 1 for 0, 171, 172, 173, 174, 175
However, the pressure generating members and nozzles corresponding to the dummy ink chambers 160 and 161 are not arranged.
【０００８】図３は図２に示したインクジェットヘッド
の吐出状態を示した図である。圧力発生部材１５３を駆
動することによってインク室１７３内の圧力を高め、イ
ンク滴５０をノズル１９３より吐出している。この様な
状況ではインク室１７３内に約１気圧程度の圧力が発生
することが実験によりわかっているが、この圧力によっ
てインク室１７３を構成しているインク室壁１８３、１
８４は変形し、外部にたわむことが知られている。実際
にはこのたわみ量は微小でインク室１７２、１７４内に
はほとんど圧力を生じない程度であるが、インクを吐出
するインク室１７３内の圧力の高まり方に影響を与える
ことがわかっている。すなわち、インク室壁１８３、１
８４の剛性が高く、たわみ量がごく少ない場合、図１０
に示すごとく、インク室１７３内の圧力は急上昇すると
ともに圧力の最大値Ｐ１も大きい。その結果、吐出する
インク滴の形状は柱状になり吐出速度、吐出体積は大き
くなる。それに対して、インク室壁１８３、１８４の剛
性が低く、たわみ量が大きい場合、図１１に示すごと
く、インク室１７３内の圧力は緩やかに上昇するととも
にその最大値Ｐ２は小さくなる。すなわち、Ｔ２＞Ｔ１
かつＰ２＜Ｐ１である。その結果、吐出するインク滴の
形状は球形になり吐出速度、吐出体積は小さくなる。こ
のようにインク室壁１８３、１８４の剛性の大小はイン
クの吐出特性に大きく影響するのである。FIG. 3 is a diagram showing the ejection state of the ink jet head shown in FIG. The pressure inside the ink chamber 173 is increased by driving the pressure generating member 153, and the ink droplet 50 is ejected from the nozzle 193. It has been experimentally known that a pressure of about 1 atm is generated in the ink chamber 173 in such a situation. However, this pressure causes the ink chamber walls 183, 1 constituting the ink chamber 173 to be formed.
It is known that 84 deforms and bends to the outside. In reality, the amount of this deflection is very small and causes almost no pressure in the ink chambers 172 and 174, but it is known that it affects how the pressure in the ink chamber 173 for ejecting ink increases. That is, the ink chamber walls 183, 1
When the rigidity of 84 is high and the amount of deflection is extremely small,
As shown in, the pressure inside the ink chamber 173 rises rapidly and the maximum value P1 of the pressure is large. As a result, the shape of the ejected ink droplet becomes columnar, and the ejection speed and the ejection volume increase. On the other hand, when the rigidity of the ink chamber walls 183 and 184 is low and the amount of deflection is large, as shown in FIG. 11, the pressure in the ink chamber 173 gradually rises and its maximum value P2 decreases. That is, T2> T1
And P2 <P1. As a result, the shape of the ejected ink droplet becomes spherical and the ejection speed and the ejection volume become small. As described above, the rigidity of the ink chamber walls 183 and 184 greatly affects the ink ejection characteristics.
【０００９】しかし、本発明の実施例では図４のように
ダミーインク室１６０を設けているため、印字吐出に使
用される最端部のインク室１７０を形成するインク室壁
１８０の剛性を他のインク室壁の剛性と等しくすること
ができる。すなわち、インク室壁１８０はダミーインク
室１６０の方向にたわむため、インク室壁１８１と剛性
を等しくすることができた。その結果、インク室１７０
内で、時間に対する発生する圧力の高まり方、圧力の最
大値が他のインク室のそれと等しくなり、全てのインク
室で吐出するインク滴の形状、吐出速度、吐出体積がそ
ろう効果が得られたのである。そのため、本発明のイン
クジェットヘッドで印字を行なった場合には、印字濃
度、印字ドットサイズが均一な印字を得ることができる
ようになったのである。However, in the embodiment of the present invention, since the dummy ink chamber 160 is provided as shown in FIG. 4, the rigidity of the ink chamber wall 180 forming the ink chamber 170 at the endmost portion used for print ejection is different. It can be made equal to the rigidity of the ink chamber wall. That is, since the ink chamber wall 180 is bent in the direction of the dummy ink chamber 160, the rigidity can be made equal to that of the ink chamber wall 181. As a result, the ink chamber 170
In the above, the generated pressure rises with time, and the maximum value of the pressure becomes equal to that of other ink chambers, and the effect that the shape, ejection speed, and ejection volume of the ink droplets ejected in all ink chambers are equalized was obtained. Of. Therefore, when printing is performed with the inkjet head of the present invention, it is possible to obtain printing with uniform print density and print dot size.
【００１０】第２の実施例は、図５に示したようにダミ
ーインク室１６０、１６１につながるダミーノズル２０
０、２０１を設けたものである。図６は図５のＺーＺ断
面に加えてダミーノズル２００、２０１等を付加した図
である。一般的に本発明のインクジェットヘッドは矢印
６１の方向を垂直上方に向けて使用する。その場合、イ
ンク導入路５２から気泡２１０が混入しても、ダミーノ
ズル２００、２０１からインクをパージする事によって
ダミーインク室１６０、１６１から効率良く気泡２１１
等を回収することができる利点がある。また、図６に示
したようにダミーインク室１６０、１６１の形状をイン
ク室１７０、１７１、１７２、１７３、１７４、１７５
と等しくすることによってインクに対する流路抵抗をそ
ろえ、適量のパージで充分に気泡２１１等を排出できる
利点がある。ただし、流路抵抗が最適値であればダミー
インク室１６０、１６１の形状は別の形状であってもよ
い。In the second embodiment, the dummy nozzle 20 connected to the dummy ink chambers 160 and 161 as shown in FIG.
0 and 201 are provided. FIG. 6 is a view in which dummy nozzles 200, 201 and the like are added in addition to the ZZ section of FIG. Generally, the inkjet head of the present invention is used with the direction of arrow 61 directed vertically upward. In this case, even if the air bubble 210 is mixed from the ink introduction path 52, by purging the ink from the dummy nozzles 200 and 201, the air bubble 211 is efficiently discharged from the dummy ink chambers 160 and 161.
Etc. can be collected. Further, as shown in FIG. 6, the shapes of the dummy ink chambers 160 and 161 are changed to ink chambers 170, 171, 172, 173, 174, 175.
By making them equal to each other, the flow path resistance to the ink can be made uniform, and the bubbles 211 and the like can be sufficiently discharged by an appropriate amount of purging. However, the dummy ink chambers 160 and 161 may have different shapes as long as the flow path resistance has an optimum value.
【００１１】さらに、図７に示したようにダミー圧力発
生部材１４０、１４１を設けた第３の実施例も可能であ
る。この場合、印字タイミングとは異なる任意タイミン
グでダミー圧力発生部材１４０、１４１を駆動して、ダ
ミーインク室１６１にたまった気泡２１２をインク滴５
０と一緒に排出することができ、パージと合わせて更に
充分な気泡排出をすることができる利点がある。Furthermore, a third embodiment in which dummy pressure generating members 140 and 141 are provided as shown in FIG. 7 is also possible. In this case, the dummy pressure generating members 140 and 141 are driven at an arbitrary timing different from the printing timing to cause the bubbles 212 accumulated in the dummy ink chamber 161 to be discharged into the ink droplet 5.
It is possible to discharge together with 0, and there is an advantage that it is possible to further discharge bubbles sufficiently in combination with purging.
【００１２】本発明のインクジェットヘッドの製造工程
では、図８に示したようにノズル形成基板３３とインク
室形成基板２３０を積層したものと、弾性板３０とイン
ク室形成基板２３１を積層したものを、図９に示したよ
うに圧着冶具１３４で支持して圧力Ｐで熱融着すること
によって接合する工程がある。このとき、その融着面の
シール性はインク漏れを防ぎ充分にインクに圧力を伝え
るという意味で非常に重要である。本発明の実施例で
は、ダミーインク室１６０、１６１があるのでインク室
壁１８０、１８６の融着面に圧力が集中して確実に融着
することになる。このため、吐出に使用される最端部の
インク室１７０、１７５であっても確実にシールされる
利点が生まれたのである。In the process of manufacturing the ink jet head of the present invention, as shown in FIG. 8, one in which the nozzle forming substrate 33 and the ink chamber forming substrate 230 are laminated and one in which the elastic plate 30 and the ink chamber forming substrate 231 are laminated are used. As shown in FIG. 9, there is a step of supporting by the crimping jig 134 and thermally fusing with the pressure P to join them. At this time, the sealing property of the fused surface is very important in the sense of preventing ink leakage and sufficiently transmitting pressure to the ink. In the embodiment of the present invention, since the dummy ink chambers 160 and 161 are provided, the pressure is concentrated on the fusion surfaces of the ink chamber walls 180 and 186, and the fusion is surely performed. Therefore, there is an advantage that even the ink chambers 170 and 175 at the outermost end used for ejection can be reliably sealed.
【００１３】[0013]
【発明の効果】以上説明したように、本発明のインクジ
ェットヘッドはインク室列の最端部にダミーインク室を
設けているため、吐出に使用される最端部のインク室で
インク室壁の剛性を他のインク室壁と等しくすることが
できる。その結果、インク室内に発生する圧力の高まり
方、圧力の最大値が他のインク室のそれと等しくなり、
全てのインク室で吐出するインク滴の飛翔形状、吐出速
度、吐出体積がそろうため、印字濃度、印字ドットサイ
ズの点で均一な品質を得ることができる利点が生じた。
また、ダミーインク室につながるダミーノズルを設けた
ことで、インク導入路から気泡が混入しても、ダミーノ
ズルからインクをパージする事によってダミーインク室
から効率良く気泡を排出することができる利点がある。
また、ダミーインク室の形状を他のインク室と等しくす
ることによってインクに対する流路抵抗をそろえ、適量
のパージで充分に気泡を排出できる利点がある。また、
ダミーインク室に対向するようにダミー圧力発生部材を
設け、印字タイミングとは異なる任意タイミングでダミ
ー圧力発生部材を駆動することで、ダミーインク室にた
まった気泡をインク滴と一緒に排出することができ、パ
ージと合わせて更に充分な気泡排出をすることができる
利点がある。また、本発明のインクジェットヘッドの製
造工程には、２枚のインク室形成基板を熱融着すること
によって接合する工程がある。このとき、その融着面の
シール性はインク漏れを防ぎ充分にインクに圧力を伝え
るという意味で非常に重要である。本発明では、ダミー
インク室があるためインク室壁の融着面に圧力が集中し
て確実に融着することになる。このため、吐出に使用さ
れる最端部のインク室であっても確実にシールされる利
点がある。As described above, since the ink jet head of the present invention is provided with the dummy ink chamber at the end of the ink chamber row, the ink chamber wall at the end of the ink chamber used for ejection is The rigidity can be made equal to that of other ink chamber walls. As a result, how the pressure generated in the ink chamber rises, the maximum value of the pressure becomes equal to that of other ink chambers,
Since the flying shapes, ejection speeds, and ejection volumes of the ink droplets ejected in all the ink chambers are the same, there is an advantage that uniform quality can be obtained in terms of print density and print dot size.
Further, by providing the dummy nozzle connected to the dummy ink chamber, even if bubbles are mixed from the ink introduction path, there is an advantage that the bubbles can be efficiently discharged from the dummy ink chamber by purging the ink from the dummy nozzle. is there.
Further, by making the shape of the dummy ink chamber the same as the other ink chambers, there is an advantage that the flow path resistance to the ink is made uniform and the bubbles can be sufficiently discharged by an appropriate amount of purging. Also,
By providing the dummy pressure generating member so as to face the dummy ink chamber and driving the dummy pressure generating member at an arbitrary timing different from the printing timing, the air bubbles accumulated in the dummy ink chamber can be discharged together with the ink droplets. In addition to the purging, there is an advantage that the bubbles can be discharged more sufficiently. In addition, the manufacturing process of the inkjet head of the present invention includes a process of joining two ink chamber forming substrates by heat fusion. At this time, the sealing property of the fused surface is very important in the sense of preventing ink leakage and sufficiently transmitting pressure to the ink. In the present invention, since the dummy ink chamber is provided, the pressure is concentrated on the fusion surface of the ink chamber wall to ensure the fusion. Therefore, there is an advantage that even the most end ink chamber used for ejection is reliably sealed.
【図１】本発明のインクジェットヘッドの斜視図。FIG. 1 is a perspective view of an inkjet head of the present invention.
【図２】本発明の第１の実施例であるインクジェットヘ
ッドの断面図。FIG. 2 is a cross-sectional view of the inkjet head that is the first embodiment of the present invention.
【図３】本発明の第１の実施例であるインクジェットヘ
ッドのインク吐出図。FIG. 3 is an ink ejection diagram of an ink jet head that is a first embodiment of the present invention.
【図４】本発明の第１の実施例であるインクジェットヘ
ッドのインク吐出図。FIG. 4 is an ink ejection diagram of the inkjet head according to the first embodiment of the present invention.
【図５】本発明の第２の実施例であるインクジェットヘ
ッドの断面図。FIG. 5 is a sectional view of an inkjet head that is a second embodiment of the present invention.
【図６】本発明の第２の実施例のインク室の断面図。FIG. 6 is a sectional view of an ink chamber according to a second embodiment of the present invention.
【図７】本発明の第３の実施例の気泡排出時の断面図。FIG. 7 is a cross-sectional view of a third embodiment of the present invention when discharging bubbles.
【図８】本発明のインク室形成基板の接合図。FIG. 8 is a bonding diagram of the ink chamber forming substrate of the present invention.
【図９】本発明のインク室形成基板の接合図。FIG. 9 is a bonding diagram of the ink chamber forming substrate of the present invention.
【図１０】従来の問題を説明する説明図である。FIG. 10 is an explanatory diagram illustrating a conventional problem.
【図１１】従来の問題を説明する説明図である。FIG. 11 is an explanatory diagram illustrating a conventional problem.
３０ ．．．． 弾性板 ３３ ．．．． ノズル形成基板 ３４ ．．．． ノズル ３６ ．．．． キャビティ形成基板 ５０ ．．．． インク滴 ６１ ．．．． 矢印 １３４ ．．．． 圧着冶具 １４０ ．．．． ダミー圧力発生部材 １４１ ．．．． ダミー圧力発生部材 １５０ ．．．． 圧力発生部材 １５１ ．．．． 圧力発生部材 １５２ ．．．． 圧力発生部材 １５３ ．．．． 圧力発生部材 １５４ ．．．． 圧力発生部材 １５５ ．．．． 圧力発生部材 １６０ ．．．． ダミーインク室 １６１ ．．．． ダミーインク室 １７０ ．．．． インク室 １７１ ．．．． インク室 １７２ ．．．． インク室 １７３ ．．．． インク室 １７４ ．．．． インク室 １７５ ．．．． インク室 １８０ ．．．． インク室壁 １８１ ．．．． インク室壁 １８３ ．．．． インク室壁 １８４ ．．．． インク室壁 １９３ ．．．． ノズル ２００ ．．．． ダミーノズル ２０１ ．．．． ダミーノズル ２１０ ．．．． 気泡 ２１１ ．．．． 気泡 ２３０ ．．．． インク室形成基板 ２３１ ．．．． インク室形成基板 ２４０ ．．．． 融着面 ２４６ ．．．． 融着面 30. ． ． ． Elastic plate 33. ． ． ． Nozzle forming substrate 34. ． ． ． Nozzle 36. ． ． ． Cavity forming substrate 50. ． ． ． Ink drop 61. ． ． ． Arrow 134. ． ． ． Crimping jig 140. ． ． ． Dummy pressure generating member 141. ． ． ． Dummy pressure generating member 150. ． ． ． Pressure generating member 151. ． ． ． Pressure generating member 152. ． ． ． Pressure generating member 153. ． ． ． Pressure generating member 154. ． ． ． Pressure generating member 155. ． ． ． Pressure generating member 160. ． ． ． Dummy ink chamber 161. ． ． ． Dummy ink chamber 170. ． ． ． Ink chamber 171. ． ． ． Ink chamber 172. ． ． ． Ink chamber 173. ． ． ． Ink chamber 174. ． ． ． Ink chamber 175. ． ． ． Ink chamber 180. ． ． ． Ink chamber wall 181. ． ． ． Ink chamber wall 183. ． ． ． Ink chamber wall 184. ． ． ． Ink chamber wall 193. ． ． ． Nozzle 200. ． ． ． Dummy nozzle 201. ． ． ． Dummy nozzle 210. ． ． ． Bubbles 211. ． ． ． Bubbles 230. ． ． ． Ink chamber forming substrate 231. ． ． ． Ink chamber forming substrate 240. ． ． ． Fusing surface 246. ． ． ． Fusing surface
Claims (3)
せ、インク室のインク圧力を高めることによってインク
滴を吐出するインクジェットヘッドにおいて、インク室
列の少なくとも一端に少なくとも１つのダミーインク室
が設けられていることを特徴とするインクジェットヘッ
ド。1. An ink jet head for ejecting ink droplets by displacing a pressure generating member by a driving voltage to increase ink pressure in an ink chamber, wherein at least one dummy ink chamber is provided at at least one end of an ink chamber row. Inkjet head characterized in that
通じるノズルが設けられていることを特徴とする請求項
１記載のインクジェットヘッド。2. The ink jet head according to claim 1, wherein the nozzle forming substrate is provided with nozzles communicating with the dummy ink chambers.
発生部材が配置されていることを特徴とする請求項２記
載のインクジェットヘッド。3. The ink jet head according to claim 2, wherein the pressure generating member is arranged so as to face the dummy ink chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239392A JP3245936B2 (en) | 1992-03-18 | 1992-03-18 | Ink jet head and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239392A JP3245936B2 (en) | 1992-03-18 | 1992-03-18 | Ink jet head and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05261918A true JPH05261918A (en) | 1993-10-12 |
| JP3245936B2 JP3245936B2 (en) | 2002-01-15 |
Family
ID=13198847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6239392A Expired - Fee Related JP3245936B2 (en) | 1992-03-18 | 1992-03-18 | Ink jet head and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3245936B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276625A (en) * | 1994-04-14 | 1995-10-24 | Seiko Epson Corp | Ink jet type recording head |
| JPH081935A (en) * | 1994-03-28 | 1996-01-09 | Seiko Epson Corp | Ink jet record head |
| US5512793A (en) * | 1994-02-04 | 1996-04-30 | Ngk Insulators, Ltd. | Piezoelectric and/or electrostrictive actuator having dummy cavities within ceramic substrate in addition to pressure chambers, and displacement adjusting layers formed aligned with the dummy cavities |
| EP0755791A2 (en) * | 1995-07-24 | 1997-01-29 | Seiko Epson Corporation | Actuator unit for an ink jet recording head and method of fabricating same |
| US5696541A (en) * | 1994-03-28 | 1997-12-09 | Seiko Epson Corporation | Mechanism and method for adjustment of head position in ink-jet printer |
| JP2001301171A (en) * | 2000-04-25 | 2001-10-30 | Seiko Epson Corp | Ink jet head |
| JP2002225259A (en) * | 2000-11-21 | 2002-08-14 | Seiko Epson Corp | Ejecting method and device for material, manufacturing method and device for color filter, manufacturing method and device for liquid crystal device, manufacturing method and device for el device, and electronic equipment |
| JP2003159787A (en) * | 2001-11-28 | 2003-06-03 | Seiko Epson Corp | Ejection method and its apparatus, electro-optic device, method and apparatus for manufacturing the device, color filter, method and apparatus for manufacturing the filter, device with substrate, and method and apparatus for manufacturing the device |
| US6660332B2 (en) | 2000-11-21 | 2003-12-09 | Seiko Epson Corporation | Methods and apparatus for making color filter by discharging a filter material |
| JP2004094218A (en) * | 2000-11-21 | 2004-03-25 | Seiko Epson Corp | Method and apparatus for jetting material, method and apparatus for manufacturing color filter, method and apparatus for manufacturing liquid crystal device, method and apparatus for manufacturing el device, and electronic equipment |
| US7901741B2 (en) | 2001-01-15 | 2011-03-08 | Seiko Epson Corporation | Apparatus and method for producing color filters by discharging material |
| US8181595B2 (en) | 2002-12-24 | 2012-05-22 | Seiko Epson Corporation | Liquid droplet ejecting apparatus, electro-optical device, method of manufacturing the electro-optical device, and electronic apparatus |
| JP2017209979A (en) * | 2016-05-20 | 2017-11-30 | キヤノン株式会社 | Liquid discharge head |
| US10759166B2 (en) | 2018-03-28 | 2020-09-01 | Brother Kogyo Kabushiki Kaisha | Liquid ejection head and liquid ejection apparatus |
-
1992
- 1992-03-18 JP JP6239392A patent/JP3245936B2/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512793A (en) * | 1994-02-04 | 1996-04-30 | Ngk Insulators, Ltd. | Piezoelectric and/or electrostrictive actuator having dummy cavities within ceramic substrate in addition to pressure chambers, and displacement adjusting layers formed aligned with the dummy cavities |
| JPH081935A (en) * | 1994-03-28 | 1996-01-09 | Seiko Epson Corp | Ink jet record head |
| US5696541A (en) * | 1994-03-28 | 1997-12-09 | Seiko Epson Corporation | Mechanism and method for adjustment of head position in ink-jet printer |
| JPH07276625A (en) * | 1994-04-14 | 1995-10-24 | Seiko Epson Corp | Ink jet type recording head |
| EP0755791A2 (en) * | 1995-07-24 | 1997-01-29 | Seiko Epson Corporation | Actuator unit for an ink jet recording head and method of fabricating same |
| EP0755791A3 (en) * | 1995-07-24 | 1997-11-05 | Seiko Epson Corporation | Actuator unit for an ink jet recording head and method of fabricating same |
| US5907340A (en) * | 1995-07-24 | 1999-05-25 | Seiko Epson Corporation | Laminated ink jet recording head with plural actuator units connected at outermost ends |
| EP1034930A1 (en) * | 1995-07-24 | 2000-09-13 | Seiko Epson Corporation | Ink jet recording head |
| JP2001301171A (en) * | 2000-04-25 | 2001-10-30 | Seiko Epson Corp | Ink jet head |
| JP2002225259A (en) * | 2000-11-21 | 2002-08-14 | Seiko Epson Corp | Ejecting method and device for material, manufacturing method and device for color filter, manufacturing method and device for liquid crystal device, manufacturing method and device for el device, and electronic equipment |
| US6660332B2 (en) | 2000-11-21 | 2003-12-09 | Seiko Epson Corporation | Methods and apparatus for making color filter by discharging a filter material |
| JP2004094218A (en) * | 2000-11-21 | 2004-03-25 | Seiko Epson Corp | Method and apparatus for jetting material, method and apparatus for manufacturing color filter, method and apparatus for manufacturing liquid crystal device, method and apparatus for manufacturing el device, and electronic equipment |
| US6939407B2 (en) | 2000-11-21 | 2005-09-06 | Seiko Epson Corporation | Methods and apparatus for making color filter by discharging a filter material |
| US7901741B2 (en) | 2001-01-15 | 2011-03-08 | Seiko Epson Corporation | Apparatus and method for producing color filters by discharging material |
| JP2003159787A (en) * | 2001-11-28 | 2003-06-03 | Seiko Epson Corp | Ejection method and its apparatus, electro-optic device, method and apparatus for manufacturing the device, color filter, method and apparatus for manufacturing the filter, device with substrate, and method and apparatus for manufacturing the device |
| US7455389B2 (en) | 2001-11-28 | 2008-11-25 | Seiko Epson Corporation | Ejecting method and ejecting apparatus |
| US8181595B2 (en) | 2002-12-24 | 2012-05-22 | Seiko Epson Corporation | Liquid droplet ejecting apparatus, electro-optical device, method of manufacturing the electro-optical device, and electronic apparatus |
| JP2017209979A (en) * | 2016-05-20 | 2017-11-30 | キヤノン株式会社 | Liquid discharge head |
| US10759166B2 (en) | 2018-03-28 | 2020-09-01 | Brother Kogyo Kabushiki Kaisha | Liquid ejection head and liquid ejection apparatus |
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| Publication number | Publication date |
|---|---|
| JP3245936B2 (en) | 2002-01-15 |
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