JPS6325944B2 - - Google Patents
Info
- Publication number
- JPS6325944B2 JPS6325944B2 JP10452380A JP10452380A JPS6325944B2 JP S6325944 B2 JPS6325944 B2 JP S6325944B2 JP 10452380 A JP10452380 A JP 10452380A JP 10452380 A JP10452380 A JP 10452380A JP S6325944 B2 JPS6325944 B2 JP S6325944B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- ink
- pressure chamber
- channel
- ejection
- 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
- 239000007788 liquid Substances 0.000 claims description 35
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 16
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/055—Devices for absorbing or preventing back-pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N2035/1027—General features of the devices
- G01N2035/1034—Transferring microquantities of liquid
- G01N2035/1041—Ink-jet like dispensers
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
【発明の詳細な説明】
本発明はインクジエツトプリンタに関し、特に
高速印字が可能なドロツプオンデマンド型液体噴
射ヘツドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ink jet printer, and more particularly to a drop-on-demand liquid ejecting head capable of high-speed printing.
従来この種の噴射ヘツドの１例として、第１図
ａ，ｂに示すものが既に知られて、いる。同図ａ
は平面図でｂは、そのＹ−Y′断面図を示す。こ
れは、電気機械変換手段として、例えばピエゾ振
動子１０１の両電極面にリード線を介して電気信
号に応じて入力電圧を印加し、可撓性プレート１
０２を伸縮変化させ噴射室１０３の容積変化を生
じさせる。この容積変化にて、噴射室１０３の内
圧を上昇させ、ノズル孔１０４によりインク滴を
噴射することができる。印加電圧除去後はプレー
ト１０２は時間の経過と共に正常な状態に戻る。
なお電気信号が印加されていないときは、ノズル
孔１０４とインクチヤンバ室（図示せず）との間
の水頭圧差を適当に保つことで、ノズル孔１０４
からのインク液もれを防止している。 As an example of this type of injection head, the one shown in FIGS. 1a and 1b is already known. Figure a
is a plan view, and b is a sectional view taken along Y-Y'. As an electromechanical conversion means, for example, an input voltage is applied to both electrode surfaces of the piezo vibrator 101 via lead wires according to an electric signal, and the flexible plate 1
02 is expanded and contracted to cause a change in the volume of the injection chamber 103. With this volume change, the internal pressure of the ejection chamber 103 can be increased, and ink droplets can be ejected from the nozzle hole 104. After the applied voltage is removed, the plate 102 returns to its normal state over time.
Note that when an electric signal is not applied, the nozzle hole 104 is
This prevents ink from leaking.
所で、電気信号を印加時、インク液はノズル孔
１０４より噴出されると同時にインクチヤンバ
（図示せず）に逆流してしまい、インク滴発生に
寄与しない余分な容積変化を噴射室１０３で生ず
ると言う悪い現象があつた。この為、所定のイン
ク滴を得るにはピエゾ振動子をより大きく歪変形
させるように印加電圧を大きくとる必要があり、
消費電力も増える傾向にあつた。一方、ピエゾ振
動子を大きく歪変形させるために、噴射室１０３
内のインク液も大きな振巾振動を起す。印加する
駆動周波数が高くなるにつれて、インク液の振巾
振動が減衰静止できなくなり、終局的にはインク
滴発生状態が電気信号に追従しなくなる悪い現象
を生じ、この為ノズル孔１０４より空気が噴射室
１０３に混入し、インク滴が発生しなくなると言
う欠点があつた。 However, when an electric signal is applied, the ink liquid is ejected from the nozzle hole 104 and simultaneously flows back into the ink chamber (not shown), causing an extra volume change in the ejection chamber 103 that does not contribute to the generation of ink droplets. A bad phenomenon occurred. Therefore, in order to obtain the desired ink droplets, it is necessary to apply a large voltage to cause the piezoelectric vibrator to undergo greater distortion.
Power consumption also tended to increase. On the other hand, in order to greatly distort the piezo vibrator, the injection chamber 103
The ink liquid inside also causes large amplitude vibrations. As the applied driving frequency increases, the amplitude vibration of the ink liquid becomes attenuated and cannot stand still, resulting in a bad phenomenon in which the state of ink droplet generation does not follow the electrical signal, and as a result, air is ejected from the nozzle hole 104. There is a drawback that the ink gets mixed into the chamber 103 and no ink droplets are generated.
また、噴射孔１０４より噴出したインク滴流量
を噴射室１０３に充填する必要があり、噴射室他
端のインク供給孔１０５を介して行うが、噴射室
１０３に介在するインク質量がその充填時間に大
きく寄与し、充填時間で数100μs以下の時間を要
する。所で、10〜20KHz程度の駆動周波数で動作
するときには、この充填時間も問題となり、高速
印字がむずかしくなる。 In addition, it is necessary to fill the ejection chamber 103 with the flow rate of ink droplets ejected from the ejection hole 104, and this is done through the ink supply hole 105 at the other end of the ejection chamber. It makes a large contribution and requires a filling time of several 100 μs or less. However, when operating at a driving frequency of about 10 to 20 KHz, this filling time also becomes a problem, making high-speed printing difficult.
更に、噴射室１０３の質量とインク液中の溶存
空気の影響でピエゾ振動子に印加する電気信号に
対し、噴射室１０４の内圧波形が遅延を生じる。
例えば10〜50μs程度の遅延時間でも10〜20KHzの
駆動周波数の動作では影響が生じ、高速印字がで
きなくなる原因となる。 Furthermore, due to the mass of the ejection chamber 103 and the air dissolved in the ink liquid, the internal pressure waveform of the ejection chamber 104 is delayed with respect to the electrical signal applied to the piezoelectric vibrator.
For example, even a delay time of about 10 to 50 μs will affect operation at a drive frequency of 10 to 20 KHz, causing high-speed printing to become impossible.
本発明の目的は、これらの欠点を除去し、駆動
周波数10KHz以上の動作、即ち毎秒当り10000ド
ツト以上のインク滴噴射が出来る液体噴射ヘツド
を提供することにある。本発明の他の目的は液体
噴射ヘツドの小型化と、高密度マルチノズル化が
可能な極めて実用的な液体噴射ヘツドを提供する
ことにある。 An object of the present invention is to eliminate these drawbacks and provide a liquid ejecting head that can operate at a driving frequency of 10 KHz or more, that is, ejects ink droplets of 10,000 dots or more per second. Another object of the present invention is to provide an extremely practical liquid ejecting head that can be miniaturized and can be made into a high density multi-nozzle.
本発明によれば、平行管路形状を有する噴射ノ
ズル部と、噴射ノズル部に連通する圧力室と、噴
射室他端に連通する絞りチヤンネル部を介してイ
ンクチヤンバ室との間に補助圧力室を設け、更に
噴射孔ノズル部と絞りチヤンネル部との２ケ所に
インクチヤンバ室に通じるインク供給孔を設けた
枚の平面構造の基板と、前記圧力室及び補助圧力
室の容積変化を生じぜる手段としてピエゾ振動子
を取付けた可撓性プレートと、前記インクチヤン
バ室を有する、平板構造の基板とから構成する液
体噴射ヘツドが得られる。 According to the present invention, an auxiliary pressure chamber is provided between the ejection nozzle portion having a parallel pipe shape, the pressure chamber communicating with the ejection nozzle portion, and the ink chamber chamber via the throttle channel portion communicating with the other end of the ejection chamber. A substrate having a planar structure, further provided with ink supply holes communicating with the ink chamber chamber at two locations, an injection hole nozzle portion and an aperture channel portion, and a means for causing a change in volume of the pressure chamber and the auxiliary pressure chamber. A liquid ejecting head is obtained which is composed of a flexible plate to which a piezoelectric vibrator is attached and a substrate having a flat plate structure and having the ink chamber chamber.
本発明による液体噴射ヘツドは、噴射ノズル部
の平行管路部と圧力室と補助圧力室との間の絞り
チヤンネル部との２ケ所にインクチヤンバ室に通
じるインク供給孔とを設けたチヤンネル形状を構
成することで、圧力室からインクチヤンバ室への
インク逆流を防止することができ、圧力室の容積
変化のインク滴発生効率を大きく向上させ、より
高速印字を可能としたことを特徴とする液体噴射
ヘツドである。また、圧力室にインク液を充填す
る時の管路抵抗は少なく、インク滴発生時の管路
抵抗が大きくなるように、圧力室の平行管路部、
絞りチヤンネル部及び２ケのインク供給口を構成
することで、圧力室のインク液減衰静止時間を短
くすることができ、更に噴射ノズル部からの空気
混入を防止することもできることを特徴とする液
体噴射ヘツド。 The liquid ejecting head according to the present invention has a channel shape in which ink supply holes communicating with the ink chamber chamber are provided in two places: the parallel pipe section of the ejecting nozzle section and the constricted channel section between the pressure chamber and the auxiliary pressure chamber. This liquid ejecting head is characterized by being able to prevent ink backflow from the pressure chamber to the ink chamber chamber, greatly improving the efficiency of ink droplet generation due to volume change in the pressure chamber, and enabling higher-speed printing. It is. In addition, the parallel pipe section of the pressure chamber is designed so that the pipe resistance when filling the pressure chamber with ink liquid is small and the pipe resistance when ink droplets are generated is large.
A liquid characterized in that by configuring an aperture channel portion and two ink supply ports, the ink liquid decay time in the pressure chamber can be shortened, and furthermore, it is possible to prevent air from entering from the ejection nozzle portion. injection head.
以下、本発明の一実施例について図面をもつて
詳細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第２図は本発明の基本動作を示すための１ケの
噴射ノズルからなる液体噴射ヘツドの平面図で、
第３図は第２図のＡ−A′断面図である。第４図
は７ケの噴射孔を有する液体噴射ヘツド基板の平
面図である。 FIG. 2 is a plan view of a liquid ejection head consisting of one ejection nozzle to show the basic operation of the present invention.
FIG. 3 is a sectional view taken along line A-A' in FIG. FIG. 4 is a plan view of a liquid ejection head substrate having seven ejection holes.
図において、１０はインク液を一定方向に噴出
するための平行管路形状を有する噴射ノズル部、
１１は噴射ノズル部１０に連通した圧力室でイン
ク滴を発生するための圧力を発生する所である。
圧力室１１がインクチヤンバ室１３に通ずるには
噴射ノズル部１０の平行管路部とインクチヤンバ
室１３とを通じるチヤンネル部A2のインク供給
孔１２−１と、圧力室１１他端の絞りチヤンネル
部１５とインクチヤンバ室１３とを通じるチヤン
ネル部A3のインク供給孔１２−２との２ケ所が
ある。圧力室１１へのインク充填は、インク供給
孔１２−１，１２−２を介して行われる。１４は
補助圧力室で絞りチヤンネル部１５と１６とを介
して圧力室１１とインクチヤンバ室１３に連通し
ている。これらを一枚の基板上に構成したのが噴
射チヤンネル基板１である。１７はガラスセラミ
ツクス、ステンレス等の可撓性プレートで、噴射
チヤンネル基板１上に取付けられ、インク液１８
を充填する構造になつておる。１９，２０はチタ
ン酸バリウム−鉛ジルコン塩酸、鉛チタン酸塩セ
ラミツク等で構成されたピエゾ振動子で主噴射室
１１と補助加圧室１４の容積変化を生じぜるため
にプレート１７上に取付つており、各ピエゾ振動
子の両電極面１９−１，１９−２，２０−１，２
０−２に電気信号を印加することで機械的歪が発
生し、プレート板を伸縮変形させ、圧力室１１と
補助圧力室１４の容積変化を起し、噴射ノズル部
から所定の大きさのインク滴を噴出させる。な
お、文字パターンを形成するためには必要な所定
の大きさのインク滴径は、記録紙へのみにじみを
考慮し、ノズル断面形状、電気信号波形、等で調
整することができる。 In the figure, 10 is an ejection nozzle section having a parallel pipe shape for ejecting ink liquid in a certain direction;
Reference numeral 11 is a pressure chamber communicating with the ejection nozzle section 10, which generates pressure for generating ink droplets.
The pressure chamber 11 communicates with the ink chamber chamber 13 through the ink supply hole 12-1 of the channel section A2 that communicates the parallel pipe section of the jet nozzle section 10 and the ink chamber chamber 13, and the throttle channel section 15 at the other end of the pressure chamber 11. There are two ink supply holes 12-2 in the channel portion A3 that communicate with the ink chamber chamber 13. The pressure chamber 11 is filled with ink through the ink supply holes 12-1 and 12-2. Reference numeral 14 denotes an auxiliary pressure chamber which communicates with the pressure chamber 11 and the ink chamber chamber 13 via throttle channel portions 15 and 16. The injection channel substrate 1 is a structure in which these components are formed on a single substrate. Reference numeral 17 denotes a flexible plate made of glass ceramics, stainless steel, etc., which is attached to the ejection channel substrate 1, and which is attached to the ink liquid 18.
The structure is such that it is filled with 19 and 20 are piezoelectric vibrators made of barium titanate-lead zirconium hydrochloride, lead titanate ceramic, etc., and are mounted on the plate 17 in order to cause a change in the volume of the main injection chamber 11 and the auxiliary pressurizing chamber 14. Both electrode surfaces 19-1, 19-2, 20-1, 2 of each piezo vibrator
By applying an electric signal to 0-2, mechanical strain is generated, causing the plate to expand and contract, causing a change in the volume of the pressure chamber 11 and the auxiliary pressure chamber 14, and causing ink of a predetermined size to be ejected from the ejection nozzle. Squirt out drops. Note that the diameter of a predetermined ink droplet required to form a character pattern can be adjusted by adjusting the cross-sectional shape of the nozzle, the electrical signal waveform, etc., taking into consideration bleeding onto the recording paper.
今ピエゾ振動子１９，２０に同時に電気信号を
印加すると、可撓性プレート１７が偏向し、圧力
室１１と伸縮圧力室１４の内圧が0.1〜0.6Kg／cm2
程度に瞬時に上昇する。すると噴射ノズル部１０
から、ある初速度（例えば１〜５ｍ／sec程度で
ある）でインク滴が噴出する。同時にインク滴１
８が絞りチヤンネル部１５を通つて補助圧力室１
４に逆流しようと作用する。所が補助圧力室１４
の内圧も圧力室１１の内圧と同程度に上昇してい
るので絞りチヤンネルA2を通つて圧力室１１に
インク液１８が流入しようと作用する。するとお
互いの力が絞りチヤンネル部A2で打消し合い、
圧力室１１内のインク液１８の逆流が発生しなく
なる。つまり１種の逆流防止弁の働きを絞りチヤ
ンネル部A2の所で生じることになる。この為、
圧力室１１の容積変化が少くなくて済み、最大の
効率では、この容積変化分は噴射したインク滴流
量に相当する分で良いことになる。従つて、従来
のようにインク液逆流分に対する余分な圧力室１
１の容積変化も必要なくなり、ピエゾ振動子のよ
り微少な歪偏向で、所定のインク滴を噴射するこ
とができた。この為毎秒10000〜30000ドツトの噴
出可能な高い駆動周波数に対し、インク滴発生が
十分に追従することができ、従来のヘツドに比較
してより高速印字が可能となつた。なお、補助圧
力室の内圧は電気信号の大きさを調整することで
圧力室１１の内圧と同じくすることができる。 Now, when electric signals are applied to the piezo vibrators 19 and 20 at the same time, the flexible plate 17 is deflected, and the internal pressure of the pressure chamber 11 and the expansion pressure chamber 14 is 0.1 to 0.6 Kg/cm 2
rises instantly to a degree. Then, the injection nozzle part 10
Ink droplets are ejected at a certain initial velocity (for example, about 1 to 5 m/sec). 1 ink drop at the same time
8 passes through the throttle channel part 15 to the auxiliary pressure chamber 1
It acts to reverse the flow to 4. The location is auxiliary pressure chamber 14
Since the internal pressure of the pressure chamber 11 has also increased to the same extent as the internal pressure of the pressure chamber 11, the ink liquid 18 tends to flow into the pressure chamber 11 through the throttle channel A2 . Then, each force is squeezed and cancels out in channel part A 2 ,
Backflow of the ink liquid 18 within the pressure chamber 11 no longer occurs. In other words, the function of a type of non-return valve occurs at the throttle channel portion A2 . For this reason,
The volume change of the pressure chamber 11 does not need to be small, and at maximum efficiency, this volume change may be equivalent to the flow rate of the ejected ink droplets. Therefore, as in the conventional case, there is an extra pressure chamber 1 for the ink liquid backflow.
There was no need for a change in the volume of the piezo vibrator, and a predetermined ink droplet could be ejected with a smaller strain deflection of the piezoelectric vibrator. For this reason, the generation of ink droplets can sufficiently follow the high driving frequency capable of ejecting 10,000 to 30,000 dots per second, making it possible to print at higher speeds than with conventional heads. Note that the internal pressure of the auxiliary pressure chamber can be made the same as the internal pressure of the pressure chamber 11 by adjusting the magnitude of the electric signal.
また、噴射ノズル部１０から放出したインク滴
流量分に相当するインク流量を圧力室１１に充填
するに必要な時間は、インク液の表面張力、ノズ
ル断面形状、圧力室１１のインク質量等の関数に
なつており、この時間を短くする為のチヤンネル
形状として、インク供給孔１２−１，１２−２を
介して圧力室１１に連通する管路抵抗値を小さく
なるように適当に設定しておく、すると電気信号
に対応し、圧力室の内圧波形の遅延が少なく、つ
まり追従性が良くなり、毎秒当り10000〜30000ド
ツトの高い駆動周波数でインク滴を発生すること
ができた。更にインク供給孔１２−１から、圧力
室１１にインクを充てんできるので、噴射ノズル
部先端１０−１に介在している、インク液１８の
圧力室１１方向への逆流移動がほとんどなく、ま
た噴出したインク滴流量に相当するインク流量を
噴射ノズル部先端１０−１に充てんする時間は圧
力室１１を介さないで極端に短い時間ですんだ。
この結果、毎秒10000〜30000ドツトで噴射して
も、その初速度が一定で安定動作することができ
た。 Further, the time required to fill the pressure chamber 11 with an ink flow rate corresponding to the flow rate of ink droplets ejected from the ejection nozzle section 10 is a function of the surface tension of the ink liquid, the cross-sectional shape of the nozzle, the ink mass in the pressure chamber 11, etc. In order to shorten this time, the channel shape is appropriately set so that the resistance value of the pipe communicating with the pressure chamber 11 via the ink supply holes 12-1 and 12-2 is small. Then, in response to electrical signals, the delay in the internal pressure waveform of the pressure chamber was small, that is, the followability was improved, and ink droplets could be generated at a high driving frequency of 10,000 to 30,000 dots per second. Furthermore, since the pressure chamber 11 can be filled with ink from the ink supply hole 12-1, there is almost no backflow movement of the ink liquid 18 in the direction of the pressure chamber 11, which is present at the tip 10-1 of the ejection nozzle part, and the ejection is prevented. The time required to fill the ejection nozzle tip 10-1 with an ink flow rate corresponding to the ink droplet flow rate obtained through the pressure chamber 11 is extremely short.
As a result, even when ejecting at 10,000 to 30,000 dots per second, the initial speed remained constant and stable operation was possible.
次に、実際に文字パターンを記録紙に印字する
方法について述べる。 Next, a method for actually printing character patterns on recording paper will be described.
第４図は一例として７ケの噴射ノズル部、圧力
室及び補助圧力室を有する噴射チヤンネル基板
で、このチヤンネル基板を可撓性プレート１７
と、インクチヤンバ室を形成した平面構造の基板
とではり合せ、液体噴射ヘツドを用い、この液体
噴射ヘツドの噴射ノズル列を記録紙送り方向と直
角にせいぜい１〜２mmの間隙で配置し、本ヘツド
を記録紙の送り方向に直角に移動させかつ、各圧
力室と補助圧力室への電気信号を５×７ドツトマ
トリツクスの構成の文字発生器（例えばNEC製
μPD403D−03、04）に接続し、印加することで
５×７ドツトの文字パターンを記録紙に記録する
ことができる。なお、この噴射ノズル部個数は幾
何構造上許される限りふやすことも当然可能であ
る。 As an example, FIG. 4 shows an injection channel board having seven injection nozzle parts, a pressure chamber, and an auxiliary pressure chamber, and this channel board is connected to a flexible plate 17.
A liquid ejecting head is used, and the ejecting nozzle rows of this liquid ejecting head are arranged perpendicularly to the recording paper feeding direction with a gap of at most 1 to 2 mm. is moved at right angles to the feeding direction of the recording paper, and electrical signals to each pressure chamber and auxiliary pressure chamber are connected to a character generator (for example, NEC μPD403D-03, 04) configured with a 5 x 7 dot matrix. , a character pattern of 5×7 dots can be recorded on recording paper. Incidentally, it is naturally possible to increase the number of injection nozzle parts as long as the geometrical structure allows.
以上記載したように、本発明の液体噴射ヘツド
は圧力室のインク液の逆流を防止し、かつインク
液減衰静止時間をより短くすることができたた
め、より高速印字が可能となつたものでその効果
は多大なものである。 As described above, the liquid ejecting head of the present invention can prevent backflow of ink liquid in the pressure chamber and shorten the ink liquid decay and standstill time, making it possible to print at higher speeds. The effects are enormous.
第１図は既知の液体噴射ヘツド概略図で、第２
図は本発明に用いられる液体ヘツドの一実施例を
示す平面図で、第３図はそのＡ−Ａ断面図、第４
図は７ケの一連のチヤンネル形状を一枚の平面構
造の基板に形成した噴射チヤンネル基板平面図で
ある。
図において、１０は噴射ノズル部、１１は圧力
室、１２−１，１２−２はインク供給孔、１３は
インクチヤンバ室、１４は補助圧力室、１５，１
６は絞りチヤンネル部、１７は可撓性プレート、
１９，２０はピエゾ振動子、３０は７ケのチヤン
ネル形状を一枚の平面構造の基板に形成した噴射
チヤンネル基板である。
FIG. 1 is a schematic diagram of a known liquid ejection head, and FIG.
The figure is a plan view showing one embodiment of the liquid head used in the present invention, and FIG.
The figure is a plan view of an injection channel substrate in which a series of seven channel shapes are formed on a single planar substrate. In the figure, 10 is a jet nozzle part, 11 is a pressure chamber, 12-1, 12-2 are ink supply holes, 13 is an ink chamber chamber, 14 is an auxiliary pressure chamber, 15, 1
6 is an aperture channel part, 17 is a flexible plate,
19 and 20 are piezo vibrators, and 30 is an injection channel substrate in which seven channel shapes are formed on a single planar substrate.
Claims (1)
とインクを供給する絞りチヤンネル部により連が
れた圧力室と、前記圧力室の一端に配設されたイ
ンク滴の噴射方向を定めるための平行管路形状を
有する噴射ノズルとから成るジエツトチヤンネル
系を形成する噴射チヤンネル基板と、前記噴射チ
ヤンネル基板のジエツトチヤンネル系を形成する
ように取付けた可撓性プレートと、前記圧力室の
容積変化を生じさせるため前記可撓性プレート上
に取付けたピエゾ振動子とを具備し、前記圧力室
の容積を急激に減少させ液圧を発生させてインク
滴を噴射する液体噴射ヘツドにおいて、前記圧力
室と前記インクチヤンバ室との間に補助圧力室を
設け、更に前記噴射ノズルと、前記圧力室と補助
圧力室との間の絞りチヤンネル部の２個所に前記
インクチヤンバ室に連通するインク供給孔を設け
たジエツトチヤンネル形状を形成した噴射チヤン
ネル基板を具備したことを特徴とする液体噴射ヘ
ツド。 ２ １ケのインクチヤンバ室に対し、複数列の前
記噴射ノズル部と圧力室及び補助圧力室並びに前
記インク供給孔とを設けたジエツトチヤンネル形
状を形成した噴射チヤンネル基板と、前記噴射チ
ヤンネル基板上に取付けた可撓性プレートと、前
記圧力室及び補助圧力室の容積変化を生じぜる手
段としてビエゾ振動子を前記可撓性プレートに取
付けた特許請求の範囲第１項記載の液体噴射ヘツ
ド。 ３ 前記噴射ノズル、圧力室、補助圧力室並びに
インク供給孔とを一枚の平面構造基板で形成し、
これに前記可撓性プレート並びに前記インクチヤ
ンバ室を有する平板構造の基板とをはり合せ一体
構造化した特許請求の範囲第１項もしくは第２項
記載の液体噴射ヘツド。[Scope of Claims] 1. An ink chamber chamber, a pressure chamber connected to the ink chamber chamber by an aperture channel section for supplying ink, and a pressure chamber disposed at one end of the pressure chamber for determining the jetting direction of ink droplets. an injection channel substrate forming a jet channel system comprising an injection nozzle having a parallel pipe shape; a flexible plate attached to form a jet channel system of the injection channel substrate; and a volume of the pressure chamber. A liquid ejection head is equipped with a piezoelectric vibrator mounted on the flexible plate to cause a change in pressure, and the liquid ejection head ejects an ink droplet by rapidly reducing the volume of the pressure chamber to generate liquid pressure. An auxiliary pressure chamber is provided between the ink chamber and the ink chamber, and ink supply holes communicating with the ink chamber are provided at two locations, one at the injection nozzle and the other at a throttle channel between the pressure chamber and the auxiliary pressure chamber. 1. A liquid ejecting head comprising an ejection channel substrate having a jet channel shape. 2. An ejection channel substrate formed with a jet channel shape in which a plurality of rows of the ejection nozzle portion, a pressure chamber, an auxiliary pressure chamber, and the ink supply hole are provided for one ink chamber chamber; 2. A liquid ejecting head according to claim 1, further comprising: a flexible plate attached thereto; and a Viezo vibrator attached to said flexible plate as means for causing a change in volume of said pressure chamber and said auxiliary pressure chamber. 3. The jet nozzle, the pressure chamber, the auxiliary pressure chamber, and the ink supply hole are formed of a single planar structure substrate,
3. A liquid ejecting head according to claim 1, wherein said flexible plate and a flat plate structure substrate having said ink chamber chamber are bonded thereto to form an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10452380A JPS5729463A (en) | 1980-07-30 | 1980-07-30 | Liquid jet head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10452380A JPS5729463A (en) | 1980-07-30 | 1980-07-30 | Liquid jet head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5729463A JPS5729463A (en) | 1982-02-17 |
| JPS6325944B2 true JPS6325944B2 (en) | 1988-05-27 |
Family
ID=14382845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10452380A Granted JPS5729463A (en) | 1980-07-30 | 1980-07-30 | Liquid jet head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5729463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0591582U (en) * | 1992-05-12 | 1993-12-14 | 貞雄 山本 | Cleaning stain removal mobile suction device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013557A (en) * | 1983-07-04 | 1985-01-24 | Nec Corp | Ink jet type printing head |
| JPS60145043U (en) * | 1984-03-07 | 1985-09-26 | 日本電気株式会社 | Multi-nozzle print head |
| JPS6110844U (en) * | 1984-06-26 | 1986-01-22 | 日本電気株式会社 | Multi-nozzle print head |
| US5751317A (en) * | 1996-04-15 | 1998-05-12 | Xerox Corporation | Thermal ink-jet printhead with an optimized fluid flow channel in each ejector |
| US6296811B1 (en) * | 1998-12-10 | 2001-10-02 | Aurora Biosciences Corporation | Fluid dispenser and dispensing methods |
| JP2007104947A (en) * | 2005-10-13 | 2007-04-26 | Daiwa Can Co Ltd | Method for adding aroma to packaged product |
-
1980
- 1980-07-30 JP JP10452380A patent/JPS5729463A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0591582U (en) * | 1992-05-12 | 1993-12-14 | 貞雄 山本 | Cleaning stain removal mobile suction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5729463A (en) | 1982-02-17 |
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