JPH0382546A - Liquid jet recording apparatus - Google Patents
Liquid jet recording apparatusInfo
- Publication number
- JPH0382546A JPH0382546A JP21968589A JP21968589A JPH0382546A JP H0382546 A JPH0382546 A JP H0382546A JP 21968589 A JP21968589 A JP 21968589A JP 21968589 A JP21968589 A JP 21968589A JP H0382546 A JPH0382546 A JP H0382546A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- liquid chamber
- communication ports
- recording
- flow path
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000004891 communication Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 10
- 230000001902 propagating effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000007639 printing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000006089 photosensitive glass Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
挟免光立
本発明は、液体噴射記録装置に関し、例えば、インクジ
ェットプリンタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid jet recording device, for example, an inkjet printer.
丈未挟先
ノンインパクト記録法は、記録時における騒音の発生が
無視し得る程度に極めて小さいという点において、最近
関心を集めている。その中で、高速記録が可能であり、
而も所謂普通紙に特別の定着処理を必要とせずに記録の
行える所謂インクジェット記録法は極めて有力な記録法
であって、これまでにも様々な方式が提案され、改良が
加えられて商品化されたものもあれば、現在もなお実用
化への努力が続けられているものもある。The non-impact recording method with a long and narrow tip has recently attracted attention because the noise generated during recording is so small that it can be ignored. Among them, high-speed recording is possible,
However, the so-called inkjet recording method, which allows recording on plain paper without the need for special fixing treatment, is an extremely powerful recording method, and various methods have been proposed, improved, and commercialized. Some have been developed, and efforts are still being made to put them into practical use.
この様なインクジェット記録法は、所謂インクと称され
る記録液体の小滴(droplet )を飛翔させ、記
録部材に付着させて記録を行うものであって、この記録
液体の小滴の発生法によって幾つかの方式に大別される
0例えば、Stam+ms方式は、記録信号に応じて吐
出口より記録液体の小滴を吐出飛翔させて記録するもの
である。つまり、このSteams方式は、記録液体を
吐出する吐出口を有する記録ヘッドに付設されているピ
エゾ振動素子に。In this inkjet recording method, recording is performed by causing droplets of a recording liquid called ink to fly and adhere to a recording member. For example, in the Stam+ms method, recording is performed by ejecting small droplets of recording liquid from an ejection port in response to a recording signal. In other words, the Steam method uses a piezo vibrating element attached to a recording head that has an ejection port for ejecting recording liquid.
電気的な記録信号を印加し、この電気的な記録信号をピ
エゾ振動素子の機械的振動に変え、該機械的振動に従っ
て前記吐出口より記録液体の小滴を吐出飛翔させて記録
部材に付着させることで記録を行うものである。Applying an electrical recording signal, converting the electrical recording signal into mechanical vibration of the piezo vibrating element, and according to the mechanical vibration, droplets of recording liquid are ejected from the ejection port and attached to the recording member. This is how records are made.
更に、特開昭48−9622号公報(米国特許第374
7120号明細書に対応)には、変形例として、前記の
ピエゾ振動素子等の手段による機械的振動エネルギーを
利用する代わりに熱エネルギーを利用することが記載さ
れている。Furthermore, Japanese Patent Application Laid-Open No. 48-9622 (U.S. Patent No. 374)
No. 7120 (corresponding to the specification) describes, as a modification, the use of thermal energy instead of the mechanical vibration energy by means such as the piezo vibrating element.
即ち、上記公報には、圧力上昇を生じさせる蒸気を発生
するために液体を直接加熱する加熱コイルをピエゾ振動
素子の代りの圧力上昇手段として使用することが記載さ
れている。That is, the above-mentioned publication describes the use of a heating coil that directly heats a liquid as a pressure increasing means in place of the piezo vibrating element in order to generate steam that causes a pressure increase.
前述のような、記録液体の小滴の発生法において、複数
ノズルを有する場合、駆動ノズルに隣接したノズルへ圧
力波が共通液室(中継液室)を介して伝播し、隣接した
ノズルを駆動したとき、その吐出インク液滴の大きさや
吐出速度、吐出タイミングを変化させたり、粒子化状態
を不安定にさせたりして悪影響を及ぼす。In the method of generating small droplets of recording liquid as described above, when multiple nozzles are used, a pressure wave propagates to the nozzle adjacent to the driving nozzle via a common liquid chamber (relay liquid chamber) and drives the adjacent nozzle. When this happens, the size, ejection speed, and ejection timing of the ejected ink droplets may be changed, and the state of particle formation may be made unstable, resulting in adverse effects.
本発明に係る従来技術の記載された公知文献としては次
のものがある。特開昭56−84975号公報には、ノ
ズルの全てが連絡している中継液室にポリエチレンなど
の連続空孔を有する多孔性物質からなる膜を配し、これ
によって圧力波を吸収または伝播を阻止することが開示
されている。Publicly known documents describing the prior art related to the present invention include the following. Japanese Patent Laid-Open No. 56-84975 discloses that a film made of a porous material such as polyethylene is arranged in a relay liquid chamber with which all nozzles communicate, and this absorbs or propagates pressure waves. Disclosed is to prevent.
また、特開昭56−84976号公報には、ノズルの全
てが連絡している中継液室の内壁を加工して凹凸をつけ
るか、あるいは樹脂フィルムなどの凹凸のある薄片を内
壁面に貼付して圧力波を乱反射させることが開示されて
いる。Furthermore, Japanese Patent Application Laid-Open No. 56-84976 discloses that the inner wall of the relay liquid chamber, which all the nozzles communicate with, is processed to have unevenness, or a thin piece of resin film or the like with unevenness is attached to the inner wall surface. It has been disclosed that pressure waves can be diffusely reflected by
さらに、特開昭56−93566号公報には、中継液室
の内壁面が凹面をなし1反射圧力波を拡散させることが
開示されている。Furthermore, Japanese Patent Application Laid-Open No. 56-93566 discloses that the inner wall surface of the relay liquid chamber is a concave surface to diffuse one reflected pressure wave.
従来、上記のように圧力波が隣接ノズルへ伝播しないよ
うに、共通液室内壁に多孔質膜を配したり、内壁面を凹
凸状に加工したり、湾曲にするといったことが考案され
ている。しかし、これらの方法、手段では、共通液室の
構造が複雑になり、製作工程の数が増えてしまう、又、
多孔性膜を用いる場合は、ゴミの発生源になり得ること
もあり、目づまりの原因にもなる。Conventionally, in order to prevent pressure waves from propagating to adjacent nozzles as described above, ideas have been devised such as arranging a porous membrane on the wall of the common liquid chamber, processing the inner wall surface into an uneven shape, or making it curved. . However, with these methods and means, the structure of the common liquid chamber becomes complicated and the number of manufacturing steps increases;
When a porous membrane is used, it can become a source of dust and cause clogging.
且−一匁
本発明は、上述のごとき実情に鑑みてなされたもので、
構造が簡単でしかも効率よく隣接ノズル間のクロストー
クを防止することで、吐出速度吐出タイミング及び粒子
化状態の安定化を図り、画像印字品質の向上を実現させ
る液体噴射記録装置を提供することを目的としてなされ
たものである。The present invention was made in view of the above-mentioned circumstances, and
It is an object of the present invention to provide a liquid jet recording device that has a simple structure and efficiently prevents crosstalk between adjacent nozzles, thereby stabilizing the ejection speed, ejection timing, and particle formation state, and improving the image printing quality. It was done for a purpose.
盪−一玖
本発明は、上記目的を達成するために、導入される記録
液体を収容するとともに、該記録液体に圧電振動子によ
って圧力波を発生させるエネルギー作用部を付設した流
路と、該流路に連絡して前記記録液体を前記作用力によ
って液滴として吐出させるためのオリフィスと、前記流
路に連絡して前記流路に前記記録液体を導入するための
液室と、該液室に記録液体を導入する手段とよりなる液
体噴射記録装置において、前記液室と前記流路を連絡す
る連絡口に第2の液室を有する連絡口付板を備えたこと
を特徴としたものである。以下、本発明の実施例に基づ
いて説明する。(ii) In order to achieve the above-mentioned object, the present invention includes a flow path that accommodates the recording liquid to be introduced and is provided with an energy acting section that generates pressure waves in the recording liquid using a piezoelectric vibrator; an orifice that communicates with the flow path and causes the recording liquid to be ejected as droplets by the acting force; a liquid chamber that communicates with the flow path and introduces the recording liquid into the flow path; and the liquid chamber. A liquid jet recording device comprising means for introducing a recording liquid into a liquid jet device, characterized in that a connecting port connecting the liquid chamber and the flow path is provided with a plate with a connecting port having a second liquid chamber. be. Hereinafter, the present invention will be explained based on examples.
第3図は、本発明による液体噴射記録装置の積層PZT
を用いたオン・デマンド型インクジェットヘッドの斜視
図で、図中、5aはリード線、5bは接地用リード線、
7は基板、8は積層PZT(圧電素子)、9は流路板、
10は連絡口付板。FIG. 3 shows the laminated PZT of the liquid jet recording device according to the present invention.
In the figure, 5a is a lead wire, 5b is a grounding lead wire,
7 is a substrate, 8 is a laminated PZT (piezoelectric element), 9 is a channel plate,
10 is a board with a connecting port.
11は液室、12はインク供給管、13は銅線、14は
FPC115は吐出口である。PZTを挾むように流路
板9と基板7を配設し、長手方向にノズルプレートと液
室11を具備させて構成される。11 is a liquid chamber, 12 is an ink supply pipe, 13 is a copper wire, and 14 is an FPC 115 is an ejection port. A channel plate 9 and a substrate 7 are disposed to sandwich PZT, and a nozzle plate and a liquid chamber 11 are provided in the longitudinal direction.
第4図(a)は、第3図における■部の拡大図で、第4
図(b)は、第4図(a)の反対側の端部から見た図で
ある。図中、16はインク流路、17.22は流路板、
18はインク、19は電極。Figure 4(a) is an enlarged view of part ■ in Figure 3;
FIG. 4(b) is a view seen from the opposite end of FIG. 4(a). In the figure, 16 is an ink flow path, 17.22 is a flow path plate,
18 is ink, 19 is an electrode.
20は充填剤、21は積層PZT(圧電素子)、23は
第2の液室である。PZT21によって、各ノズルに対
応して、個別邸動可能なようにPZT21にはスリット
(溝)が形成され、その溝の残りの部分によって形成さ
れた凸部が厚み変位することで、該凸部に対抗して設け
られたインク流路16が容積変化し、対応するノズルか
らインク18が吐出する。また、溝部には隣接間の影響
を受けないように充填剤20等で充填されている。20 is a filler, 21 is a laminated PZT (piezoelectric element), and 23 is a second liquid chamber. A slit (groove) is formed in the PZT 21 so that the PZT 21 can be moved individually corresponding to each nozzle, and the thickness of the convex portion formed by the remaining portion of the groove changes, so that the convex portion The volume of the ink flow path 16 provided in opposition to the ink channel 16 changes, and the ink 18 is ejected from the corresponding nozzle. Further, the grooves are filled with a filler 20 or the like so as not to be influenced by adjacent grooves.
第5図は、流路板と連絡口付板の接合面すなわち、各ノ
ズルへのインク供給口の斜視図であり、図中、lは流路
板、li、l、、l、は積層pzT、3−013−2f
3−3はインク供給口、4は流路を作る壁(斜線部)
、16−8,16−、.16−、はそれぞれ吐出口1
5−、、15−2.15−□に連通する流路である。FIG. 5 is a perspective view of the joint surface of the channel plate and the connecting plate, that is, the ink supply port to each nozzle. , 3-013-2f
3-3 is the ink supply port, 4 is the wall that creates the flow path (shaded area)
, 16-8, 16-, . 16-, respectively, are discharge ports 1
5-, , 15-2. This is a flow path communicating with 15-□.
積層PZT2−1.l、、l、を同時駆動させたときに
、吐出口151から吐出するインク吐出速度vj1と、
積層PZT2−.を単独で開動させたときのインク吐出
速度Vjzを比較すると、vjlくVjiである。これ
は、積層PZTに限らず、圧力波を発生させて吐出口よ
りインクを吐出させる場合、隣接ノズル(流路16−1
.16−お及び16−、)間で、液室11を介して圧力
波が伝播し、相互干渉を起こすからである0本発明は、
この点に着目し、液室と該流路を連絡する連絡口に第2
の液室をもつ連絡口付板をもつことを特徴とし、上記の
相互干渉を防止しようというものである。Laminated PZT2-1. The ink ejection speed vj1 ejected from the ejection port 151 when l, , l are simultaneously driven;
Laminated PZT2-. Comparing the ink ejection speed Vjz when the ink is opened and moved independently, it is vjl lower than Vji. This is not limited to laminated PZT, but when generating pressure waves to eject ink from the ejection port, the problem is that the adjacent nozzle (flow path 16-1
.. 16- and 16-,), pressure waves propagate through the liquid chamber 11 and cause mutual interference.
Focusing on this point, we installed a second port connecting the liquid chamber and the flow path.
It is characterized by having a connecting plate with a liquid chamber, and is intended to prevent the above-mentioned mutual interference.
第1図は、本発明による液体噴射記録装置のヘッド部の
一実施例を説明するための構成図で1図中、6は連絡口
、10は連絡口付板、11は液室、16は流路、23は
第2の液室である。FIG. 1 is a configuration diagram for explaining one embodiment of the head section of a liquid jet recording apparatus according to the present invention. In the figure, 6 is a communication port, 10 is a plate with a communication port, 11 is a liquid chamber, and 16 is The flow path 23 is a second liquid chamber.
第1図は、流路16と液室11との間に第2の液室23
を設けたものである。この第2の液室23を設けること
で、連絡口6から液室11を介して隣接する連絡口6へ
伝搬する圧力波を乱反射させ、隣接連絡口6への圧力波
の回折を防止するものである。第1図において、流路1
6へのインクの供給は、連絡口付板10の第2の液室2
3及び連絡口6を通して行なわれる。尚、この連絡口6
はインク供給における流体抵抗の役割を果たすもので、
連絡口6の径は吐出口径とのバランスで最適な径にする
ことができる。FIG. 1 shows a second liquid chamber 23 between the flow path 16 and the liquid chamber 11.
It has been established. By providing this second liquid chamber 23, the pressure waves propagating from the communication port 6 to the adjacent communication port 6 via the liquid chamber 11 are diffusely reflected, thereby preventing the pressure waves from being diffracted to the adjacent communication port 6. It is. In FIG. 1, flow path 1
6 is supplied with ink from the second liquid chamber 2 of the connecting plate 10.
3 and communication port 6. In addition, this contact point 6
plays the role of fluid resistance in ink supply,
The diameter of the communication port 6 can be set to an optimum diameter in balance with the discharge port diameter.
第2図(a)〜(c)は、第2の液室を形成する連絡口
付板10の他の実施例を示すものである。FIGS. 2(a) to 2(c) show other embodiments of the connecting plate 10 forming the second liquid chamber.
第2図(a)は、第1図の連絡口付板に比べて液室11
から第2の液室23への流入口を狭めたもので、第2図
(b)は、さらに第2の液室の内壁面を曲面にしたもの
である。また、第2図(Q)は、流路16の流入口と連
絡口6の径を等しくした例である。Figure 2(a) shows the liquid chamber 11 compared to the plate with the connection port in Figure 1.
FIG. 2(b) shows the inner wall surface of the second liquid chamber further curved. Moreover, FIG. 2 (Q) is an example in which the diameters of the inflow port of the flow path 16 and the communication port 6 are made equal.
これらの連終口付板はガラス、樹脂、感光ガラス、シリ
コン等をエツチング技術、フォトリソ技術等を用いて容
易に製作することができる。These plates with continuous openings can be easily manufactured from glass, resin, photosensitive glass, silicon, etc. using etching technology, photolithography technology, etc.
羞−一来
以上の説明から明らかなように1本発明によると、液室
と連絡口との間に第2の液室が設けであるので、圧力波
が乱反射し、隣接連絡口への回折を防止することができ
る。また、容易に低コストで相互干渉を防止でき、高画
像品質を得ることができる。1. As is clear from the above explanation, according to the present invention, since the second liquid chamber is provided between the liquid chamber and the communication port, pressure waves are diffusely reflected and diffracted to the adjacent communication port. can be prevented. Further, mutual interference can be easily prevented at low cost and high image quality can be obtained.
第1図は1本発明による液体噴射記録装置のヘッド部の
一実施例を説明するための構成図、第2図(a)〜(c
)は、連絡口付板の他の実施例を示す図、第3図は、本
発明による液体噴射記録装置のヘッド部の斜視図、第4
図(a)は、第3図における■部の拡大図、第4図(b
)は、第4図(a)の反対側の端部から見た図、第5図
は、インク供給口の斜視図である。
6・・・連絡口、10・・・連絡口板、11・・・液室
、16・・・流路、23・・・第2液室。FIG. 1 is a configuration diagram for explaining one embodiment of a head section of a liquid jet recording apparatus according to the present invention, and FIGS. 2(a) to (c)
) is a diagram showing another embodiment of the plate with a connecting hole, FIG. 3 is a perspective view of the head section of the liquid jet recording device according to the present invention, and FIG.
Figure (a) is an enlarged view of part ■ in Figure 3, and Figure 4 (b).
) is a view seen from the opposite end of FIG. 4(a), and FIG. 5 is a perspective view of the ink supply port. 6... Communication port, 10... Communication port plate, 11... Liquid chamber, 16... Channel, 23... Second liquid chamber.
Claims (1)
体に圧電振動子によって圧力波を発生させるエネルギー
作用部を付設した流路と、該流路に連絡して前記記録液
体を前記作用力によって液滴として吐出させるためのオ
リフィスと、前記流路に連絡して前記流路に前記記録液
体を導入するための液室と、該液室に記録液体を導入す
る手段とよりなる液体噴射記録装置において、前記液室
と前記流路を連絡する連絡口に第2の液室を有する連絡
口付板を備えたことを特徴とする液体噴射記録装置。1. A flow path that accommodates the recording liquid to be introduced and is provided with an energy acting section that generates pressure waves in the recording liquid using a piezoelectric vibrator, and a flow path connected to the flow path that causes the recording liquid to be moved by the acting force. A liquid jet recording device comprising an orifice for ejecting liquid droplets, a liquid chamber for communicating with the flow path and introducing the recording liquid into the flow path, and means for introducing the recording liquid into the liquid chamber. 2. A liquid jet recording device according to claim 1, further comprising a plate with a connecting port having a second liquid chamber at a connecting port connecting the liquid chamber and the flow path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21968589A JPH0382546A (en) | 1989-08-25 | 1989-08-25 | Liquid jet recording apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21968589A JPH0382546A (en) | 1989-08-25 | 1989-08-25 | Liquid jet recording apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0382546A true JPH0382546A (en) | 1991-04-08 |
Family
ID=16739367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21968589A Pending JPH0382546A (en) | 1989-08-25 | 1989-08-25 | Liquid jet recording apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0382546A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002210963A (en) * | 2001-01-15 | 2002-07-31 | Matsushita Electric Ind Co Ltd | Liquid ejector, ink jet spray comprising it and method for manufacturing liquid ejector |
-
1989
- 1989-08-25 JP JP21968589A patent/JPH0382546A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002210963A (en) * | 2001-01-15 | 2002-07-31 | Matsushita Electric Ind Co Ltd | Liquid ejector, ink jet spray comprising it and method for manufacturing liquid ejector |
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