JPS62116154A - Ink jet recorder - Google Patents
Ink jet recorderInfo
- Publication number
- JPS62116154A JPS62116154A JP25486185A JP25486185A JPS62116154A JP S62116154 A JPS62116154 A JP S62116154A JP 25486185 A JP25486185 A JP 25486185A JP 25486185 A JP25486185 A JP 25486185A JP S62116154 A JPS62116154 A JP S62116154A
- Authority
- JP
- Japan
- Prior art keywords
- driving
- ejection
- ink
- inkjet recording
- amount
- 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
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
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
-
- 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
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04541—Specific driving circuit
-
- 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
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0459—Height of the driving signal being adjusted
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明はインクジェット記録装置に係り、特に複数のイ
ンクジェットヘッドを集積してなるオンデマンド型のイ
ンクジェット記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an inkjet recording device, and particularly to an on-demand type inkjet recording device that integrates a plurality of inkjet heads.
[従来の技術]
大量の情報を短時間で処理するために、記録装置の高速
化が強く要望されている。インクを吐出することにより
記録を行うインクジェット記録装置においてかかる情報
の高速処理を達成させるには、ヘッド各々の周波数特性
を向上させるか、あるいは複数のヘッドを集積させて広
範囲で記録を行うようにすることが考えられるが、ヘッ
ドの周波数特性には自ずから限界があるので、大幅な高
速化を達成するためには複数のヘッドを集積させるのが
望ましいこととなる。[Prior Art] In order to process a large amount of information in a short time, there is a strong demand for faster recording devices. In order to achieve high-speed processing of information in an inkjet recording device that records by ejecting ink, it is necessary to improve the frequency characteristics of each head or to integrate multiple heads to perform recording over a wide range. However, since there is a natural limit to the frequency characteristics of the head, it is desirable to integrate a plurality of heads in order to achieve a significant increase in speed.
従来、この種の装置においては、比較的小さい部分にヘ
ッドを集積させるという構造上の制限から、インクに吐
出エネルギを作用させる電気−機械変換素子としての板
状のピエゾ索子を有する所謂サイロニクス型のヘッドを
集積させた形態のものが多く採用されている。Conventionally, in this type of device, due to the structural limitation of integrating the head in a relatively small area, a so-called thyronics type device has been used, which has a plate-shaped piezo probe as an electro-mechanical transducer that applies ejection energy to the ink. Many types of heads are integrated.
[発明が解決しようとする問題点]
しかしながら、かかる形態、あるいはまた円筒形状のピ
エゾ素子を有する所謂グールド型のヘッドを集積した形
態であっても同様であるが、このような装置では電気−
機械変換素子を使用し、インク吐出に際して機械振動を
起こさせる方式であるために、ヘッドの集積を行った場
合、各々のヘッド間で前記振動による相互干渉が生じる
。すなわち、例えば隣接するヘッドが同時に駆動された
ような場合、単独で駆動される場合と比較してより大き
なエネルギが作用するため、記録されたドツト径や飛翔
的液滴(ドロップレット)の吐出速度が変化し、従って
記録品位が低下する等の問題点がある。特に、駆動電圧
を可変とすることでインク吐出量を制御し、以て中間調
を表現するような場合、この問題点は一層顕著となる。[Problems to be Solved by the Invention] However, the same applies to this form or a form in which a so-called Gould type head having a cylindrical piezo element is integrated, but in such a device, the electrical
Since this method uses a mechanical transducer element to cause mechanical vibrations during ink ejection, when heads are integrated, mutual interference occurs between the heads due to the vibrations. In other words, for example, when adjacent heads are driven at the same time, more energy is applied than when they are driven alone, so the recorded dot diameter and droplet ejection speed are There are problems such as a change in the recording quality and a deterioration in recording quality. In particular, this problem becomes even more pronounced when the drive voltage is made variable to control the amount of ink ejection to express halftones.
[問題点を解決するための手段]
本発明は、かかる問題点を解決し、ヘッド間の相互干渉
を無くすることにより、高品位な記録を行うことができ
るインクジェット記録装置を提供することを目的とする
。[Means for Solving the Problems] An object of the present invention is to solve these problems and provide an inkjet recording device that can perform high-quality recording by eliminating mutual interference between heads. shall be.
出部材の各々に対応して配設され駆動信号の供給に応じ
てインクの吐出エネルギを作用させる吐出エネルギ発生
手段とを具えたインクジェット記録装置において、吐出
エネルギ発生手段の各々に対応し、当該対応した吐出エ
ネルギ発生手段に対して供給される駆動信号の大きさを
、他の吐出エネルギ発生手段に対して供給される駆動信
号の大きさに応じて補正する補正手段を具備したことを
特徴とする。In an inkjet recording apparatus comprising an ejection energy generating means disposed corresponding to each of the ejecting members and applying ejection energy of ink in response to supply of a drive signal, a method corresponding to each of the ejection energy generating means and the corresponding corresponding one is provided. The invention is characterized by comprising a correction means for correcting the magnitude of the drive signal supplied to the ejection energy generation means according to the magnitude of the drive signal supplied to the other ejection energy generation means. .
[作 用]
すなわち、本発明によれば、吐出エネルギが吐出部材間
で干渉するような場合も他の吐出エネルギ発生手段への
駆動信号の大きさに応じて一つの吐出エネルギ発生手段
への駆動信号の大きさが補正されるので、吐出エネルギ
発生手段には適正量の駆動信号が供給されることになる
。[Function] That is, according to the present invention, even when ejection energy interferes between ejection members, one ejection energy generation means is driven depending on the magnitude of a drive signal to another ejection energy generation means. Since the magnitude of the signal is corrected, an appropriate amount of drive signal is supplied to the ejection energy generating means.
[実施例] 以下、図面を参照して本発明の詳細な説明する。[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.
第1図は本発明を適用可能なインクジェット記録装置の
主要部の一構成例であり、ここではグールドタイプのヘ
ッドをn個集積した形態のものを示している。図におい
て、6はインク供給口で、ここから供給されたインクは
共通インク室5から異物捕集用のフィルタ7を介してノ
ズル1−1〜1−nに供給される。各ヘッド内では、圧
力室4がインクで充填され、電気−機械変換素子3に例
えばパネル状の電気信号が加えられると素子3が変形し
、圧力波が4内に作用するとほぼ同時にオリフィス2か
らインク滴が吐出される。FIG. 1 shows an example of the configuration of the main parts of an inkjet recording apparatus to which the present invention can be applied, and here a configuration in which n Gould type heads are integrated is shown. In the figure, 6 is an ink supply port, and ink supplied from this port is supplied from the common ink chamber 5 to the nozzles 1-1 to 1-n via a filter 7 for collecting foreign matter. In each head, a pressure chamber 4 is filled with ink, and when an electrical signal is applied to the electro-mechanical transducer 3, for example in the form of a panel, the element 3 deforms, and a pressure wave acts in the ink, almost simultaneously from the orifice 2. Ink droplets are ejected.
第2図は隣接するヘッド間の圧力の干渉量を示し、例え
ば第1図のノズルl−1に対応した素子3を波高V[ボ
ルト]で駆動したときにノズルニー2内の圧力室4′で
観測される圧力δの大きさを表したものである。FIG. 2 shows the amount of pressure interference between adjacent heads. For example, when the element 3 corresponding to nozzle l-1 in FIG. This represents the magnitude of the observed pressure δ.
第3図は第1図におけるノズル1−1に対応した素子3
を波高一定のパルス信号で駆動したとき、各ノズル内の
圧力室における発生圧力δを示したものである。Figure 3 shows element 3 corresponding to nozzle 1-1 in Figure 1.
This figure shows the pressure δ generated in the pressure chamber in each nozzle when driven by a pulse signal with a constant wave height.
第2図および第3図より、干渉圧力δは、で表わすこと
ができることがわかる。但し、ここで、Lは波高Vで駆
動したときの電気−機械変換素子と圧力測定点との距離
、αおよびβは形状や材質で決まる定数である。したが
って、形状や材質が決定された段階で干渉圧力δを推定
することができることがわかる。From FIGS. 2 and 3, it can be seen that the interference pressure δ can be expressed as . However, here, L is the distance between the electro-mechanical conversion element and the pressure measurement point when driven at the wave height V, and α and β are constants determined by the shape and material. Therefore, it can be seen that the interference pressure δ can be estimated at the stage when the shape and material are determined.
一方、駆動時の発生圧力とインク吐出量とはほぼ比例関
係が成立することが知られており、干渉圧力δはそのま
まインク吐出量の変化として現われる。On the other hand, it is known that there is a substantially proportional relationship between the pressure generated during driving and the amount of ink discharged, and the interference pressure δ directly appears as a change in the amount of ink discharged.
第4図は変換素子3の駆動回路の構成の一例を示し、図
中8−1は入力信号Aによってパルス波高を設定するた
めの増幅器である。DI、Ql、Q2は増幅器8−1の
出力が正のときのスイッチ回路を構成する。また、D2
.Q3.Q4は増幅器8−1の出力が負のときのスイッ
チ回路を構成する。これらスイッチ回路は共にタイミン
グパルスBによってオンとなりこのときに素子3が駆動
される。FIG. 4 shows an example of the configuration of a drive circuit for the conversion element 3, and 8-1 in the figure is an amplifier for setting the pulse height using the input signal A. DI, Ql, and Q2 constitute a switch circuit when the output of the amplifier 8-1 is positive. Also, D2
.. Q3. Q4 constitutes a switch circuit when the output of amplifier 8-1 is negative. Both of these switch circuits are turned on by the timing pulse B, and at this time the element 3 is driven.
第5図は第1図示のヘッドの集積体を駆動する駆動回路
の構成例を示す。不図示の駆動信号源から各ノズルの駆
動量を決定するための信号A−1〜A−nが供給された
とき、減算回路9−1にて隣接するノズルの駆動量に応
じて発生する干渉圧力δに見合う分の電圧が減算されて
波高値が決定され、第4図のスイッチング回路を集合し
たスイッチング回路9−2によって電圧補正された駆動
パルスを発生させる。なお、このときの補正量は抵抗器
R−1−R−kを適宜選択することにより設定できる。FIG. 5 shows an example of the configuration of a drive circuit for driving the head assembly shown in FIG. When signals A-1 to A-n for determining the drive amount of each nozzle are supplied from a drive signal source (not shown), interference occurs in the subtraction circuit 9-1 according to the drive amount of adjacent nozzles. A voltage corresponding to the pressure δ is subtracted to determine the peak value, and a voltage-corrected drive pulse is generated by the switching circuit 9-2, which is a collection of the switching circuits shown in FIG. Note that the amount of correction at this time can be set by appropriately selecting the resistors R-1-Rk.
すなわち、所定のインク吐出量が得られるように隣接す
るノズルの駆動により発生する干渉圧力の成分を補正す
べく駆動電圧を補正することが可能となり、従って適正
量のインク吐出が得られることになる。特に本例におい
ては、駆動電圧を変えることによりインク吐出量を制御
して中間調を表現するような場合、隣接するノズルの駆
!IJ量に応じた量だけ補正されるので、隣接ノズルが
いかなる電圧で駆動されても適正な補正がなされること
になる。また、インク吐出が行われないヘッドでは、入
力信号Aがゼロであるため、補正信号により、素子3に
かかるパルスが負となり、干渉圧力δによるメニスカス
の不要振動が抑制される効果もある。さらに、第1図の
ようにノズル整列されたことにより、隣接するヘッドの
干渉圧力δを補正するだけでその先への伝播が無くなる
ので、第5図示の回路によってほぼ正確に補正すること
ができる。In other words, it is possible to correct the driving voltage to correct the interference pressure component generated by driving adjacent nozzles so that a predetermined amount of ink is ejected, and therefore an appropriate amount of ink is ejected. . In particular, in this example, when controlling the amount of ink ejection by changing the drive voltage to express halftones, the drive of adjacent nozzles is different. Since the amount of correction is made in accordance with the IJ amount, appropriate correction will be made no matter what voltage the adjacent nozzle is driven with. Furthermore, since the input signal A is zero in a head that does not eject ink, the pulse applied to the element 3 becomes negative due to the correction signal, which also has the effect of suppressing unnecessary vibration of the meniscus due to the interference pressure δ. Furthermore, by arranging the nozzles as shown in Figure 1, just by correcting the interference pressure δ of the adjacent head, the propagation to the other side is eliminated, so it can be almost accurately corrected by the circuit shown in Figure 5. .
なお、ノズルの駆動回路は種々の構成とすることができ
るのは言うまでもない。It goes without saying that the nozzle drive circuit can have various configurations.
第6図は素子3を駆動するためのスイッチング回路の他
の構成である。本例は、第4図示の例に比べて増幅器a
−tの出力が負の)−矢のスイ・す壬゛ノグ回路を省略
してOv人力時の補正がなされないようにしたものであ
る。これは、もともとδが小さい場合に有効である。す
なわち、第4図示の例ではOv入力時にδのみで吐出が
なされる場合をも補正するのに対し、本例はδ値が小で
あり補正の必要が無いとして省略したものである。FIG. 6 shows another configuration of the switching circuit for driving the element 3. In this example, compared to the example shown in FIG.
- The output of t is negative) - The arrow switch/switch circuit is omitted so that no correction is made when Ov is manually operated. This is originally effective when δ is small. That is, in the example shown in FIG. 4, the case where ejection is performed only with δ at the time of Ov input is also corrected, whereas this example is omitted because the δ value is small and there is no need for correction.
また、上述の2実施例においてはアナログ的補正演算を
行ったが、ディジタル信号で補正演算を行うようにして
もよいのは勿論である。さらにマイクロコンピュータを
用い、処理の過程で例えば110Mに設けたルックアッ
プテーブルを参照しつつ補正演算を行うようにすること
も容易である。Further, in the two embodiments described above, analog correction calculations were performed, but it goes without saying that the correction calculations may be performed using digital signals. Furthermore, it is easy to use a microcomputer to perform correction calculations while referring to a look-up table provided in, for example, 110M during the processing process.
さらに、上述の実施例においては干渉圧力が正の場合を
扱ったが、ヘッドの構造によってこれが負になるような
場合には減算器9−1に変えて加算器を設ければ同様の
補正が可能となる。Furthermore, although the above embodiment deals with the case where the interference pressure is positive, if the interference pressure becomes negative depending on the structure of the head, a similar correction can be made by providing an adder in place of the subtractor 9-1. It becomes possible.
加えて、上述の実施例では駆動量として電圧値を用いた
が、例えばパルス幅等で制御する場合は、パルス幅補正
を行うようにすれば同様な効果が得られる。In addition, although the voltage value was used as the driving amount in the above-described embodiment, when controlling by pulse width or the like, for example, the same effect can be obtained by performing pulse width correction.
[発明の効!J、]
以上説明したように、本発明によれば、ヘッド間の吐出
エネルギの相互干渉による悪影響を排除でき、以て高品
位の画像記録が行えるようになる。[Efficacy of invention! J, ] As described above, according to the present invention, it is possible to eliminate the adverse effects caused by the mutual interference of ejection energies between heads, thereby making it possible to perform high-quality image recording.
第1図は本発明を適用可能なインクジェット記録装置の
主要部の一構成例を示す断面図、第2図は隣接するヘッ
ド間の圧力干渉量を説明するための線図、
第3図は第1図における1ノズルに対応して配設した吐
出エネルギ発生手段としての電気−機械変換素子を駆動
したときに他のノズル群に伝播する圧力干渉量を説明す
るための線図、
第4図は電気−機械変換素子のスイッチング回路の一構
成例を示す回路図、
第5図は第1図示の主要部を駆動するための駆動回路の
一構成例を示す回路図、
第6図は電気−機械変換素子のスイッチング回路の他の
構成例を示す回路図である。
1−I N1−n・・・ノズル、
3.3−1〜3−n・・・電気−機械変換素子、4・・
・圧力室、
8−1・・・増幅器、
9−1・・・減算回路、
9−2・・・スイッチング回路、
δ・・・圧力干渉量。
第1図
第2図
/−27−31−4−−−−−1−n
第3図
第4図FIG. 1 is a sectional view showing a configuration example of the main part of an inkjet recording apparatus to which the present invention can be applied, FIG. 2 is a diagram for explaining the amount of pressure interference between adjacent heads, and FIG. Figure 4 is a diagram for explaining the amount of pressure interference that propagates to other nozzle groups when an electro-mechanical conversion element as a discharge energy generating means arranged corresponding to one nozzle in Figure 1 is driven. A circuit diagram showing an example of a configuration of a switching circuit of an electro-mechanical conversion element, FIG. 5 is a circuit diagram showing an example of a configuration of a drive circuit for driving the main parts shown in FIG. 1, and FIG. FIG. 3 is a circuit diagram showing another configuration example of a switching circuit of a conversion element. 1-I N1-n...Nozzle, 3.3-1 to 3-n...Electro-mechanical conversion element, 4...
・Pressure chamber, 8-1...Amplifier, 9-1...Subtraction circuit, 9-2...Switching circuit, δ...Pressure interference amount. Figure 1 Figure 2/-27-31-4----1-n Figure 3 Figure 4
Claims (1)
部材と、該複数の吐出部材の各々に対応して配設され駆
動信号の供給に応じてインクの吐出エネルギを作用させ
る吐出エネルギ発生手段とを具えたインクジェット記録
装置において、 前記吐出エネルギ発生手段の各々に対応し、当該対応し
た吐出エネルギ発生手段に対して供給される駆動信号の
大きさを、他の吐出エネルギ発生手段に対して供給され
る駆動信号の大きさに応じて補正する補正手段を具備し
たことを特徴とするインクジェット記録装置。 2)特許請求の範囲第1項記載のインクジェット記録装
置において、前記複数の吐出部材は並列に集積された集
積体の形態を有し、前記補正手段は隣接する吐出部材に
対応して配設された吐出エネルギ発生手段への駆動信号
の大きさに応じて前記補正を行うようにしたことを特徴
とするインクジェット記録装置。 3)特許請求の範囲第1項または第2項記載のインクジ
ェット記録装置において、前記吐出エネルギ発生手段は
電気信号の供給に応じて機械的エネルギをインクに作用
させる電気−機械変換素子を有することを特徴とするイ
ンクジェット記録装置。[Claims] 1) A plurality of ejection members having ejection ports for ejecting ink, and a plurality of ejection members disposed corresponding to each of the plurality of ejection members and configured to emit ink ejection energy in response to supply of a drive signal. In an inkjet recording apparatus, the magnitude of the drive signal supplied to each of the ejection energy generating means is set to be different from that of the other ejection energy. An inkjet recording apparatus characterized by comprising a correction means for correcting according to the magnitude of a drive signal supplied to the generation means. 2) In the inkjet recording apparatus according to claim 1, the plurality of ejection members have the form of a stack stacked in parallel, and the correction means is disposed corresponding to adjacent ejection members. An inkjet recording apparatus characterized in that the correction is performed in accordance with the magnitude of a drive signal sent to an ejection energy generating means. 3) In the inkjet recording apparatus according to claim 1 or 2, the ejection energy generating means includes an electro-mechanical conversion element that applies mechanical energy to the ink in response to the supply of an electric signal. Features of inkjet recording device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25486185A JPS62116154A (en) | 1985-11-15 | 1985-11-15 | Ink jet recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25486185A JPS62116154A (en) | 1985-11-15 | 1985-11-15 | Ink jet recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62116154A true JPS62116154A (en) | 1987-05-27 |
Family
ID=17270859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25486185A Pending JPS62116154A (en) | 1985-11-15 | 1985-11-15 | Ink jet recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62116154A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993385A (en) * | 1989-04-04 | 1991-02-19 | Fuji Jukogyo Kabushiki Kaisha | Device for controlling speed of an engine |
US6386666B1 (en) | 1998-02-13 | 2002-05-14 | Toshiba Tec Kabushiki Kaisha | Ink-jet head driving device |
JP2013517971A (en) * | 2010-01-29 | 2013-05-20 | ヒューレット−パッカード デベロップメント カンパニー エル.ピー. | Crosstalk reduction in piezoelectric print heads |
US20170326874A1 (en) * | 2016-05-11 | 2017-11-16 | Ricoh Company, Ltd. | Drive waveform generating device, liquid discharge device, and liquid discharge apparatus |
JP2017206004A (en) * | 2016-05-11 | 2017-11-24 | 株式会社リコー | Drive waveform generation device, device for discharging liquid |
-
1985
- 1985-11-15 JP JP25486185A patent/JPS62116154A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993385A (en) * | 1989-04-04 | 1991-02-19 | Fuji Jukogyo Kabushiki Kaisha | Device for controlling speed of an engine |
US6386666B1 (en) | 1998-02-13 | 2002-05-14 | Toshiba Tec Kabushiki Kaisha | Ink-jet head driving device |
JP2013517971A (en) * | 2010-01-29 | 2013-05-20 | ヒューレット−パッカード デベロップメント カンパニー エル.ピー. | Crosstalk reduction in piezoelectric print heads |
US8770692B2 (en) | 2010-01-29 | 2014-07-08 | Hewlett-Packard Development Company, L.P. | Crosstalk reduction in piezo printhead |
US20170326874A1 (en) * | 2016-05-11 | 2017-11-16 | Ricoh Company, Ltd. | Drive waveform generating device, liquid discharge device, and liquid discharge apparatus |
JP2017206004A (en) * | 2016-05-11 | 2017-11-24 | 株式会社リコー | Drive waveform generation device, device for discharging liquid |
US10166767B2 (en) * | 2016-05-11 | 2019-01-01 | Ricoh Company, Ltd. | Drive waveform generating device, liquid discharge device, and liquid discharge apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5024589B2 (en) | Droplet discharge device, droplet discharge characteristic correction method, and ink jet recording apparatus | |
US5359350A (en) | Method of driving ink jet printing head | |
EP1634705B1 (en) | Line-type ink-jet recording apparatus | |
JP4729976B2 (en) | Ink jet recording head, head manufacturing method, and ink jet recording apparatus | |
JP2006231685A (en) | Inkjet recording device | |
US20040051750A1 (en) | Method of controlling an inkjet printhead, an inkjet printhead suitable for use of said method, and an inkjet printer comprising said printhead | |
JP4069123B2 (en) | Inkjet recording device | |
WO2005120840A1 (en) | Ink jet recording device and ink jet recording method | |
EP1027218B1 (en) | Ink jet printer | |
JPS62116154A (en) | Ink jet recorder | |
US7625053B2 (en) | Ink jet recording apparatus | |
JP2018114642A (en) | Inkjet head | |
JP2008272952A (en) | Method for driving inkjet head, inkjet head and inkjet recorder | |
JP2007118294A (en) | Driving device for inkjet head, and driving method | |
JP2004042414A (en) | Driving method for ink jet head, and ink jet printer using the driving method | |
JP4797550B2 (en) | Droplet discharge device | |
JP5432627B2 (en) | Inkjet recording device | |
JPH0691204A (en) | Piezoelectric liquid droplet ejection device | |
JP2007118278A (en) | Driving method for inkjet head, inkjet head, and inkjet recording device | |
JPH04339660A (en) | Method for driving liquid jet recording head | |
JPH06191023A (en) | Liquid-jet recording apparatus | |
JP2007283706A (en) | Driving device of droplet discharge head and driving method of droplet discharge head | |
JPS593888Y2 (en) | Inkjet recording device drive control circuit | |
JPH0952359A (en) | Ink jet recording apparatus | |
JPH1110866A (en) | Ink jet recording device |