JPH06336011A - Printing head device - Google Patents
Printing head deviceInfo
- Publication number
- JPH06336011A JPH06336011A JP12916793A JP12916793A JPH06336011A JP H06336011 A JPH06336011 A JP H06336011A JP 12916793 A JP12916793 A JP 12916793A JP 12916793 A JP12916793 A JP 12916793A JP H06336011 A JPH06336011 A JP H06336011A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- ink
- pressure chamber
- crank
- change
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧電素子の駆動により
圧力室内の容積を変化させて該圧力室内の内容物を吐出
するインクジェット方式のプリンタヘッド等に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet type printer head or the like which drives a piezoelectric element to change the volume in a pressure chamber to discharge the contents in the pressure chamber.
【０００２】[0002]
【従来の技術】図７は従来装置の断面図、図８は従来装
置の斜視図である。圧電素子８５の変化量を直接インク
吐出ノズル８１の圧力室９０に伝えインクを吐出させて
いる。尚８７はマクラ、８８はベースプレート、８９は
圧電素子８５と貫通孔の隙間を防ぐシールである。圧電
素子８５に駆動電圧が加わると圧電素子８５が変化を起
こし矢印の方向へ収縮する。圧電素子８５が収縮すると
圧電素子８５の先端部にあるインク吐出ノズル８１の圧
力室９０の内部容積が大きくなり内部圧力が低下する
為、スリット８６を通してインクが圧力室９０に供給さ
れる。８３，８４は各々インクパスＡ、インクパスＢで
ある。2. Description of the Related Art FIG. 7 is a sectional view of a conventional device, and FIG. 8 is a perspective view of the conventional device. The amount of change of the piezoelectric element 85 is directly transmitted to the pressure chamber 90 of the ink ejection nozzle 81 to eject the ink. Reference numeral 87 is a muffler, 88 is a base plate, and 89 is a seal for preventing a gap between the piezoelectric element 85 and the through hole. When a drive voltage is applied to the piezoelectric element 85, the piezoelectric element 85 changes and contracts in the direction of the arrow. When the piezoelectric element 85 contracts, the internal volume of the pressure chamber 90 of the ink ejection nozzle 81 at the tip of the piezoelectric element 85 increases and the internal pressure decreases, so that ink is supplied to the pressure chamber 90 through the slit 86. Reference numerals 83 and 84 denote an ink path A and an ink path B, respectively.
【０００３】次に、圧電素子８５の電圧がカットされる
と圧電素子８５は元の状態に復帰し圧力室９０の内部容
積は小さくなり内部圧力が高くなる。圧力室９０内のイ
ンクは圧力室９０後方がスリット８６になっている為、
管路抵抗が大きいので圧力室９０の前方へ流れオリフィ
ス孔８２より吐出される。以上は公知資料として特開昭
５７−２４２６２号公報が挙げられる。Next, when the voltage of the piezoelectric element 85 is cut, the piezoelectric element 85 returns to its original state, and the internal volume of the pressure chamber 90 becomes smaller and the internal pressure becomes higher. Since the ink in the pressure chamber 90 has a slit 86 behind the pressure chamber 90,
Since the conduit resistance is large, it flows toward the front of the pressure chamber 90 and is discharged from the orifice hole 82. As a known material, JP-A-57-24262 can be mentioned.
【０００４】更に特開昭６１−１２０７６２に挙げられ
るようなインクジェットヘッドの例もある。すなわち図
９で示す通り、１０１はノズル、１０２はベースプレー
ト、１０７はインク加圧液室、１１０はインク流路、１
０８はインク供給チューブであり、圧電素子１０５に駆
動パルスを印加し、上下方向に縮ませると、振動板１０
３は支持体１０４を支点として下方へ変位する。振動板
１０３は振動棒１０６を介して振動板１０９を下方へ変
位させ、インク加圧液室１０７の体積を減少させる。こ
れによりインク加圧液室１０７の内圧が高まり、インク
をノズル１０１より噴射する。Further, there is an example of an ink jet head as described in JP-A-61-120762. That is, as shown in FIG. 9, 101 is a nozzle, 102 is a base plate, 107 is an ink pressurizing liquid chamber, 110 is an ink flow path, 1
Reference numeral 08 denotes an ink supply tube, and when a drive pulse is applied to the piezoelectric element 105 and contracted in the vertical direction, the vibration plate 10
3 is displaced downward with the support 104 as a fulcrum. The vibrating plate 103 displaces the vibrating plate 109 downward via the vibrating rod 106 to reduce the volume of the ink pressurizing liquid chamber 107. As a result, the internal pressure of the ink pressurizing liquid chamber 107 increases, and ink is ejected from the nozzle 101.
【０００５】[0005]
【発明が解決しようとする課題】従来方式では圧電素子
に電圧を加えた時に生ずる機械的な変化を直接インク又
は振動板に与えてインクを噴射させているが圧電素子の
変化量が小さくインク吐出量を多くする為に駆動電圧を
高くしたり、又圧電素子を数枚重ね合わせた積層タイプ
にしたものを用いる等で対応していた。In the conventional method, the mechanical change generated when a voltage is applied to the piezoelectric element is directly applied to the ink or the vibrating plate to eject the ink, but the change amount of the piezoelectric element is small and the ink is ejected. This has been dealt with by increasing the drive voltage in order to increase the amount, or by using a laminated type in which several piezoelectric elements are stacked.
【０００６】しかし駆動電圧が高いと装置の小形化や安
全性等の面で問題があり又積層型圧電素子にしても、電
気的な接続の問題や変化力の方向（不要振動）の問題、
駆動部の大きさ（面積）や変化量がある程度決まってし
まうという問題があった。又、圧電素子の変化量を増幅
する場合であっても圧電素子の変化方向と増幅された変
化方向とは常に同一方向であり、支持板１０４等は接合
部であると共に曲げ運動の力が加わる部位であり、高価
な素材の使用を要求される。更に一つの圧電素子を用い
て、該圧電素子の一方向の変化を一方向にしか増幅でき
ない。However, when the driving voltage is high, there are problems in terms of downsizing of the device and safety, and even in the case of the laminated piezoelectric element, there is a problem of electrical connection and a problem of direction of change force (unnecessary vibration).
There has been a problem that the size (area) of the drive unit and the amount of change are determined to some extent. Further, even when the change amount of the piezoelectric element is amplified, the change direction of the piezoelectric element and the amplified change direction are always in the same direction, and the support plate 104 and the like are joints and a bending motion force is applied. It is a part and requires the use of expensive materials. Further, by using one piezoelectric element, the change in one direction of the piezoelectric element can be amplified only in one direction.
【０００７】[0007]
【課題を解決するための手段】本発明の請求項１記載の
プリントヘッドは、圧電素子の駆動により圧力室内の容
積を変化させて前記圧力室内のインクをオリフィス孔よ
り吐出させるさせるプリントヘッド装置において、該プ
リントヘッド本体と前記圧力室内に連通する連通孔を設
け、該連通孔にピストン部材を移動自在に装着すると共
に、前記ピストン部材と前記圧電素子との間に該圧電素
子の変化量を増幅し、かつ変化方向を変換する変化量変
換増幅手段を有することを特徴とするプリントヘッド装
置である。According to a first aspect of the present invention, there is provided a printhead device in which a piezoelectric element is driven to change a volume in a pressure chamber to eject ink in the pressure chamber from an orifice hole. , A communication hole communicating with the print head body and the pressure chamber is provided, a piston member is movably mounted in the communication hole, and a variation amount of the piezoelectric element is amplified between the piston member and the piezoelectric element. In addition, the print head device is characterized in that it has a change amount converting and amplifying means for changing the changing direction.
【０００８】本発明の請求項２記載のプリントヘッドは
請求項１記載のプリントヘッド装置において、変化量
変換増幅手段と共に、圧電素子の変化を同時に複数方向
へ伝播させる複数方向伝播手段とを有することを特徴と
するプリントヘッド装置である。According to a second aspect of the present invention, there is provided a printhead device according to the first aspect, wherein the printhead includes a change amount conversion / amplification means and a multidirectional propagation means for simultaneously propagating a change in the piezoelectric element in a plurality of directions. Is a print head device.
【０００９】[0009]
【作用】上記構成により、圧電素子の変化量をクランク
を用いた増幅手段及び複数方向伝播手段により以下の利
点が挙げられる。With the above structure, the following advantages can be given by the amplifying means and the plural-direction transmitting means using the crank for the variation of the piezoelectric element.
【００１０】圧電素子の変化量の大きさを自由に設定
出来る。The amount of change in the piezoelectric element can be freely set.
【００１１】駆動電圧を低くして使用出来る。（低電
圧でも変化量を確保出来る） 変化量を直接利用しないので駆動部の大きさ（面積）
を自由に設定出来る。It can be used by lowering the driving voltage. (The amount of change can be secured even at low voltage) The size (area) of the drive unit because the amount of change is not used directly
Can be set freely.
【００１２】１つの圧電素子を用いて同時に複数の異
なった方向の変化力（駆動力）が取り出せる。By using one piezoelectric element, a plurality of changing forces (driving forces) in different directions can be simultaneously extracted.
【００１３】複数の圧電素子の変化力の合成が可能。It is possible to combine the changing forces of a plurality of piezoelectric elements.
【００１４】圧電素子の変化力の方向を変えることが
可能。It is possible to change the direction of the changing force of the piezoelectric element.
【００１５】（電流の方向を逆にしなくても力を逆向き
に出来る） 圧電素子の不要方向の動作影響を少なく出来る。(The force can be reversed without reversing the direction of the current.) The influence of the operation of the piezoelectric element in the unnecessary direction can be reduced.
【００１６】上記から低電圧駆動化による電源部の小型
・軽量化、変化量・駆動面積の適正化によるインク吐出
効率のアップ等が図れる。From the above, it is possible to reduce the size and weight of the power supply unit by driving at a low voltage and increase the ink ejection efficiency by optimizing the amount of change and the driving area.
【００１７】[0017]
【実施例】以下、図面に示した本発明の実施例に基づき
詳細を説明する。尚これらの実施例に本発明は限定され
るものではないことは勿論である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details will be described below based on the embodiments of the present invention shown in the drawings. Needless to say, the present invention is not limited to these examples.
【００１８】図１はプリントヘッド装置の外観図であ
り、１はインクカートリッジではキャリッジベース、３
は印字ヘッド、４はプラテンローラーである。すなわち
印字したい用紙をプラテンローラー４に巻き付け、イン
クカートリッジ１に注入されているインクを印字ヘッド
３より用紙に吹き付けることで印字を行う。尚ヘッド部
はキャリッジベース２上に搭載されており、水平自在に
移動することにより用紙の幅方向について印字を可能と
する。更に用紙長手方向についてはプラテンローラー４
を回転させることにより印字を行う。FIG. 1 is an external view of a print head device, in which 1 is a carriage base for an ink cartridge and 3 is an ink cartridge.
Is a print head, and 4 is a platen roller. That is, the paper to be printed is wound around the platen roller 4, and the ink injected into the ink cartridge 1 is sprayed from the print head 3 onto the paper to perform printing. The head unit is mounted on the carriage base 2 and can move horizontally so that printing can be performed in the width direction of the paper. Furthermore, regarding the longitudinal direction of the paper, the platen roller 4
Printing is performed by rotating.
【００１９】図２及び図３は本発明の実施例の説明図で
あり、図２は断面図を図３は斜視図を表す。以下、詳細
な動作説明を行う。2 and 3 are explanatory views of an embodiment of the present invention, FIG. 2 is a sectional view and FIG. 3 is a perspective view. The detailed operation will be described below.
【００２０】圧電素子２５に電圧が加わると、圧電素子
２５が変化して全長が短くなり、その先端に接続してあ
るクランク２４を働かす。クランク２４によって変化量
が増幅されると同時に力の方向が約９０度曲げられイン
ク吐出ノズル２１内の圧力室３０のピストン２３が下が
り圧力室３０内が負圧となる為、圧力室後方のスリット
２６を通してインクがノズル内部に供給される。圧電素
子２５とクランク２４とは接着剤等で接着している。次
に圧電素子２５に加わる電圧をカットすると圧電素子２
５がもとの状態に復帰し、再びクランク２４を働かし圧
力室３０のピストン２３が戻り圧力室内部の圧力が増加
するが、圧力室３０の後方はスリット２６になっており
管路抵抗が大きい為、圧力室３０の前方へ圧力が伝わり
圧力室内のインクは前方へと流れ先端部にあるオリフィ
ス孔２２より吐出される。戻しバネ３３は圧電素子２５
の電圧をカットした時にクランク２４を基の状態に戻す
役目をはたすものである。尚、上記接着関係によって戻
しバネ３３をなくす事もできる。ここで２７はインクパ
ス、２８はクランク２４の支点ピン、２９はベースプレ
ート、３２はベースプレート２９に圧電素子２５を取付
けるためのマクラと呼ばれるスペーサー、３１はピスト
ン２３が移動（上下動）する際に気密性を保持するため
のシールである。When a voltage is applied to the piezoelectric element 25, the piezoelectric element 25 changes to shorten the entire length, and the crank 24 connected to the tip of the piezoelectric element 25 works. The amount of change is amplified by the crank 24, and at the same time, the direction of the force is bent by about 90 degrees, the piston 23 of the pressure chamber 30 in the ink ejection nozzle 21 is lowered, and the inside of the pressure chamber 30 becomes a negative pressure. Ink is supplied through 26 to the inside of the nozzle. The piezoelectric element 25 and the crank 24 are adhered to each other with an adhesive or the like. Next, when the voltage applied to the piezoelectric element 25 is cut, the piezoelectric element 2
5 returns to the original state, the crank 24 works again, the piston 23 of the pressure chamber 30 returns, and the pressure inside the pressure chamber increases, but the slit 26 is behind the pressure chamber 30 and the conduit resistance is large. Therefore, the pressure is transmitted to the front of the pressure chamber 30, and the ink in the pressure chamber flows forward and is ejected from the orifice hole 22 at the tip. The return spring 33 is the piezoelectric element 25.
It serves to return the crank 24 to the original state when the voltage of is cut. The return spring 33 can be eliminated by the above adhesive relationship. Here, 27 is an ink path, 28 is a fulcrum pin of the crank 24, 29 is a base plate, 32 is a spacer for attaching the piezoelectric element 25 to the base plate 29, and 31 is an airtightness when the piston 23 moves (moves up and down). Is a seal for holding.
【００２１】尚上記実施例の利点を以下に挙げる。The advantages of the above embodiment are listed below.
【００２２】ａ、圧電素子２５を水平に設置している
為、高さを低く出来る。Since the piezoelectric element 25 is installed horizontally, the height can be reduced.
【００２３】ｂ、インク吐出ノズル２１を下面でベース
プレート２９に取付（接着・ビス止め等）している為、
ノズル２１の上下分割化が可能になりシール３１の注入
が容易になる。B. Since the ink discharge nozzle 21 is attached (adhesive, screwed, etc.) to the base plate 29 at the lower surface,
The nozzle 21 can be divided into upper and lower parts, and the seal 31 can be easily injected.
【００２４】ｃ、圧電素子２５への電気的接続用ケーブ
ルが後向きに取り出せるのでドライバー用基板との接続
が便利。C, The cable for electrical connection to the piezoelectric element 25 can be taken out backwards, so connection with the driver substrate is convenient.
【００２５】ｄ、圧電素子２５をベースプレート２９の
下部に設置する為、従来方式よりノズル２１周辺がすっ
きりする。D. Since the piezoelectric element 25 is installed below the base plate 29, the area around the nozzle 21 is cleaner than in the conventional method.
【００２６】ｅ、従来方式（圧電素子直接駆動方式）の
インク吐出ノズルをそのまま利用出来る。E, the ink ejection nozzle of the conventional method (piezoelectric element direct drive method) can be used as it is.
【００２７】ｆ、従来方式（圧電素子直接駆動方式）の
圧電素子ユニット（圧電素子８５＋マクラ８７：図８）
を利用出来る。F, a conventional type (piezoelectric element direct drive type) piezoelectric element unit (piezoelectric element 85 + macula 87: FIG. 8)
Can be used.
【００２８】ｇ、従来方式のインクカートリッジユニッ
トをそのまま転用出来る。The conventional ink cartridge unit can be used as it is.
【００２９】図４及び図５も同じく本発明の実施例であ
り、図４は断面図を図５は斜視図を表す。以下詳細な動
作説明を行う。4 and 5 are also embodiments of the present invention, FIG. 4 is a sectional view and FIG. 5 is a perspective view. The detailed operation will be described below.
【００３０】圧電素子４５に電圧が加わり全長が短くな
り、先端部に接続してあるクランク４４により変位量が
増幅されると同時にバブル５５が下げられると同時に加
圧インク供給口５７より加圧インクが供給される。圧電
素子４５とクランク４４とは接着剤等で固定されてい
る。次に圧電素子４５に加わる電圧をカットすると該素
子４５は元の状態に復帰し再びクランク４４を動かしバ
ルブ５５は元に戻る。これによりインク吐出ノズル４１
内の圧力が増加し先端部にあるオリフィス孔４２より吐
出される。この方式はインク供給に関し加圧して供給す
るものであるためバネ５６にてバルブ５５を保持する必
要がある。ここで４８はクランク４４の支点ピン４９は
ベースプレート５２，５２ａは各々マクラ、副マクラで
あり、圧電素子４５をベースプレート５２に固定してい
る。５１はバルブ５５が移動（上下動）する際に気密性
を保持するためのシールである。尚、インク吐出ノズル
４１内の圧力はインクセンサー部５４で検知している。
又、上記実施例の利点は図２，図３の例と同様である。A voltage is applied to the piezoelectric element 45 to shorten its total length, and the amount of displacement is amplified by the crank 44 connected to the tip of the piezoelectric element 45. At the same time, the bubble 55 is lowered and at the same time, the pressurized ink is supplied from the pressurized ink supply port 57. Is supplied. The piezoelectric element 45 and the crank 44 are fixed with an adhesive or the like. Next, when the voltage applied to the piezoelectric element 45 is cut, the element 45 returns to the original state, the crank 44 is moved again, and the valve 55 returns to the original state. Accordingly, the ink ejection nozzle 41
The internal pressure increases and is discharged from the orifice hole 42 at the tip. In this system, the valve 55 is required to be held by the spring 56 because it pressurizes and supplies the ink. Here, reference numeral 48 is a fulcrum pin 49 of the crank 44, base plates 52 and 52a are a muffler and a sub muffler, respectively, and the piezoelectric element 45 is fixed to the base plate 52. Reference numeral 51 is a seal for maintaining airtightness when the valve 55 moves (moves up and down). The pressure inside the ink discharge nozzle 41 is detected by the ink sensor unit 54.
Further, the advantages of the above embodiment are the same as those of the examples of FIGS.
【００３１】次に、図６の本発明の実施例を詳細に説明
する。この場合も基本的原理すなわち圧電素子の変位量
をクランクを用いて増幅する操作は同様である。但しク
ランクは２方向クランク６４であり、圧電素子６５に電
圧が加わり全長が短くなるとピストン６２は下降しバル
ブ６７は図中左方向に動きインクが供給される圧力室６
８は負圧になっている。次に電圧をカットして圧電素子
６５の全長が元に戻るとピストン６２は上昇し（元の位
置に戻り）バルブ６７は図中右方向に動き（元の位置に
戻り）圧力室６８の圧力が増加しオリフィス孔６６より
インクが吐出される。尚、これによりインク吐出時にイ
ンクが逆流（吐出圧力がインク供給部へ戻る）するのを
防止するためのバルブの動作を１つの圧電素子で兼用で
きる。又圧電素子の変位力をインク吐出用として２方向
から加えることが出来るので圧力室内のインクに加わる
圧力の伝達効率を改善することができる。Next, the embodiment of the present invention shown in FIG. 6 will be described in detail. Also in this case, the basic principle, that is, the operation of amplifying the displacement amount of the piezoelectric element using the crank is the same. However, the crank is a two-way crank 64, and when voltage is applied to the piezoelectric element 65 and the total length is shortened, the piston 62 descends and the valve 67 moves leftward in the drawing to supply pressure to the pressure chamber 6
8 is negative pressure. Next, when the voltage is cut and the entire length of the piezoelectric element 65 returns to its original position, the piston 62 rises (returns to its original position), the valve 67 moves to the right in the figure (returns to its original position), and the pressure in the pressure chamber 68 increases. And the ink is ejected from the orifice hole 66. As a result, one piezoelectric element can also function as a valve for preventing ink from flowing back (ejection pressure returns to the ink supply portion) during ink ejection. Further, since the displacement force of the piezoelectric element can be applied from two directions for ejecting ink, the transmission efficiency of the pressure applied to the ink in the pressure chamber can be improved.
【００３２】シール６１、ピストン６３等は図２〜図５
の例と同じ使用法である。以上図６は１つの圧電素子で
２方向の変位力を出力している例を示した。The seal 61, the piston 63, etc. are shown in FIGS.
It has the same usage as the example. FIG. 6 shows an example in which one piezoelectric element outputs displacement force in two directions.
【００３３】一般的に圧電素子の変位量は圧電素子の板
厚・駆動電圧等で決まってしまうため、本発明のように
クランク等を用いピンを支点として力点（圧電素子が接
触しているクランク部）、作用点（バルブ・ピストン等
が接触しているクランク部）の長さ比を任意に決定し、
それに応じた増幅作用を得られることは非常に便利であ
る。尚圧電素子の性質として、その変位に関しては３次
元方向全てに変位するものであり、すなわち例えば３方
向をＸ，Ｙ，Ｚ方向とすると、Ｘ方向の変位力を利用し
たい場合でも、Ｙ，Ｚ方向への変位が発生し、その結
果、特にインクジェットプリンタ用のノズルの場合はイ
ンク吐出速度のバラツキ等不都合が生じることがあっ
た。ところが本発明の如く間接的にクランクを設置する
ことで、該クランクの材質を圧電素子より硬度の大きい
ものにしてやれば不要な（Ｙ，Ｚ方向）変位力は低減す
ることが可能となる。その他本発明は、上記しかつ図面
に示した実施例のみに限定されるものではなく、要旨を
逸脱しない範囲内で適宜変形して実施できることは勿論
である。Generally, the amount of displacement of the piezoelectric element is determined by the thickness of the piezoelectric element, the driving voltage, etc. Therefore, as in the present invention, a crank or the like is used, and a force point (a crank with which the piezoelectric element is in contact) with a pin as a fulcrum. Part), the point of action (crank part where the valve, piston, etc. are in contact), the length ratio is arbitrarily determined,
It is very convenient to be able to obtain the corresponding amplification effect. Incidentally, as a property of the piezoelectric element, with respect to its displacement, it is displaced in all three-dimensional directions, that is, assuming that the three directions are the X, Y, and Z directions, even if it is desired to use the displacement force in the X direction, the Y and Z directions are used. In some cases, in the case of nozzles for inkjet printers, inconveniences such as variations in ink ejection speed may occur. However, by indirectly installing the crank as in the present invention, if the material of the crank is made harder than the piezoelectric element, unnecessary (Y, Z direction) displacement force can be reduced. Others The present invention is not limited to the embodiments described above and shown in the drawings, and it is needless to say that the present invention can be appropriately modified and implemented without departing from the scope of the invention.
【００３４】[0034]
【発明の効果】本発明によれば圧電素子の変位量をクラ
ンクを用いた増幅手段及び複数方向伝播手段により以下
の効果が期待できる。According to the present invention, the following effects can be expected by the amplifying means and the multi-directional propagating means using the crank for the displacement amount of the piezoelectric element.
【００３５】圧電素子の変化量の大きさを自由に設定
出来る。The amount of change in the piezoelectric element can be set freely.
【００３６】駆動電圧を低くして使用出来る。（低電
圧でも変化量を確保出来る） 変化量を直接利用しないので駆動部の大きさ（面積）
を自由に設定出来る。It can be used by lowering the driving voltage. (The amount of change can be secured even at low voltage) The size (area) of the drive unit because the amount of change is not used directly
Can be set freely.
【００３７】１つの圧電素子を用いて同時に複数の異
なった方向の変化力（駆動力）が取り出せる。By using one piezoelectric element, a plurality of changing forces (driving forces) in different directions can be simultaneously extracted.
【００３８】複数の圧電素子の変化力の合成が可能。It is possible to combine the changing forces of a plurality of piezoelectric elements.
【００３９】圧電素子の変化力の方向を変えることが
可能。It is possible to change the direction of the changing force of the piezoelectric element.
【００４０】（電流の方向を逆にしなくても力を逆向き
に出来る） 圧電素子の不要方向の動作影響を少なく出来る。(The force can be reversed without reversing the direction of the current.) The influence of the operation of the piezoelectric element in the unnecessary direction can be reduced.
【００４１】上記から低電圧駆動化による電源部の小型
・軽量化、変化量・駆動面積の適正化によるインク吐出
効率のアップ等が図れる。From the above, it is possible to reduce the size and weight of the power supply unit by driving at a low voltage and increase the ink ejection efficiency by optimizing the amount of change and the driving area.
【図１】プリントヘッド装置の外観斜視図である。FIG. 1 is an external perspective view of a print head device.
【図２】本発明の第１の実施例を示す断面図である。FIG. 2 is a cross-sectional view showing a first embodiment of the present invention.
【図３】本発明の第１の実施例を示す斜視図である。FIG. 3 is a perspective view showing a first embodiment of the present invention.
【図４】本発明の第２の実施例を示す断面図である。FIG. 4 is a sectional view showing a second embodiment of the present invention.
【図５】本発明の第２の実施例を示す斜視図である。FIG. 5 is a perspective view showing a second embodiment of the present invention.
【図６】本発明の第３の実施例を示す断面図である。FIG. 6 is a sectional view showing a third embodiment of the present invention.
【図７】従来装置を示す断面図である。FIG. 7 is a cross-sectional view showing a conventional device.
【図８】従来装置を示す斜視図である。FIG. 8 is a perspective view showing a conventional device.
【図９】他の従来装置を示す断面図である。FIG. 9 is a cross-sectional view showing another conventional device.
１ インクカートリッジ ２ キャリッジベース ３ 印字ヘッド ４ プラテンローラー ２１ インク吐出ノズル ２２ オリフィス孔 ２３ ピストン ２４ クランク ２５ 圧電素子 ２６ スリット ２７ インクパス ２８ ピン ２９ ベースプレート ３０ 圧力室 ３１ シール ３２ マクラ ３３ 戻しバネ ４１ インク吐出ノズル ４２ オリフィス孔 ４４ クランク ４５ 圧電素子 ４８ ピン ４９ ベースプレート ５１ シール ５２ マクラ ５２ａ スペーサ（副マクラ） ５４ インクセンサー部 ５５ バルブ ５６ バネ ５７ 力圧インク供給口 ６１ シール ６２ ピストン ６３ ピン ６４ ２方向クランク ６５ 圧電素子 ６６ オリフィス孔 ６７ バルブ ６８ 圧力室 ８１ インク吐出ノズル ８２ オリフィス孔 ８３ インクパスＡ ８４ インクパスＢ ８５ 圧電素子 ８６ スリット ８７ マクラ ８８ ベースプレート ８９ シール ９０ 圧力室 １０１ ノズル １０２ ベースプレート １０３ 振動板（弾性体） １０４ 支持板（弾性部材） １０５ 圧電素子 １０６ 振動棒 １０７ インク加圧液室 １０８ インク供給チューブ １０９ 振動板 １１０ インク流路 1 Ink Cartridge 2 Carriage Base 3 Print Head 4 Platen Roller 21 Ink Ejection Nozzle 22 Orifice Hole 23 Piston 24 Crank 25 Piezoelectric Element 26 Slit 27 Ink Pass 28 Pin 29 Base Plate 30 Pressure Chamber 31 Seal 32 Macula 33 Return Spring 41 Ink Ejection Nozzle 42 Orifice Hole 44 Crank 45 Piezoelectric element 48 Pin 49 Base plate 51 Seal 52 Marker 52a Spacer (sub-marker) 54 Ink sensor part 55 Valve 56 Spring 57 Forced ink supply port 61 Seal 62 Piston 63 pin 64 Two-way crank 65 Piezoelectric element 66 Orifice hole 67 Valve 68 Pressure Chamber 81 Ink Ejection Nozzle 82 Orifice Hole 83 Ink Path A 84 Ink Path B 85 Piezoelectric Element 86 Sleeve To 87 macula 88 base plate 89 seal 90 pressure chamber 101 nozzle 102 base plate 103 vibrating plate (elastic body) 104 support plate (elastic member) 105 piezoelectric element 106 vibrating rod 107 ink pressurizing liquid chamber 108 ink supply tube 109 vibrating plate 110 ink flow Road
Claims (2)
変化させて前記圧力室内のインクをオリフィス孔より吐
出させるさせるプリントヘッド装置において、該プリン
トヘッド本体と前記圧力室内に連通する連通孔を設け、
該連通孔にピストン部材を移動自在に装着すると共に、
前記ピストン部材と前記圧電素子との間に該圧電素子の
変化量を増幅し、かつ変化方向を変換する変化量変換増
幅手段を有することを特徴とするプリントヘッド装置。1. A printhead device in which the volume of a pressure chamber is changed by driving a piezoelectric element so that ink in the pressure chamber is ejected from an orifice hole, and a communication hole communicating with the printhead body and the pressure chamber is provided. ,
A piston member is movably mounted in the communication hole, and
A printhead device comprising a change amount conversion / amplification means for amplifying a change amount of the piezoelectric element and for changing a change direction between the piston member and the piezoelectric element.
いて、変化量変換増幅手段と共に、圧電素子の変化を同
時に複数方向へ伝播させる複数方向伝播手段とを有する
ことを特徴とするプリントヘッド装置。2. The printhead device according to claim 1, further comprising: a change amount conversion / amplification unit, and a multi-direction propagation unit that simultaneously propagates a change in the piezoelectric element in a plurality of directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12916793A JPH06336011A (en) | 1993-05-31 | 1993-05-31 | Printing head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12916793A JPH06336011A (en) | 1993-05-31 | 1993-05-31 | Printing head device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06336011A true JPH06336011A (en) | 1994-12-06 |
Family
ID=15002803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12916793A Pending JPH06336011A (en) | 1993-05-31 | 1993-05-31 | Printing head device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06336011A (en) |
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-
1993
- 1993-05-31 JP JP12916793A patent/JPH06336011A/en active Pending
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