JP2859192B2 - Ink jet recording device - Google Patents
Ink jet recording deviceInfo
- Publication number
- JP2859192B2 JP2859192B2 JP1289096A JP1289096A JP2859192B2 JP 2859192 B2 JP2859192 B2 JP 2859192B2 JP 1289096 A JP1289096 A JP 1289096A JP 1289096 A JP1289096 A JP 1289096A JP 2859192 B2 JP2859192 B2 JP 2859192B2
- Authority
- JP
- Japan
- Prior art keywords
- material particles
- discharge
- voltage
- color material
- discharge electrode
- 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 - Fee Related
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
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
- B41J2002/061—Ejection by electric field of ink or of toner particles contained in ink
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はインクジェット記録
装置に関し、特に顔料系インク中の色材粒子を電気泳動
現象により制御するようにしたインクジェット記録装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus, and more particularly to an ink jet recording apparatus in which coloring material particles in a pigment ink are controlled by an electrophoretic phenomenon.
【０００２】[0002]
【従来の技術】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、簡単な機
構で記録媒体上に直接高速記録が可能であり、しかも普
通紙に記録の行える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
ている。2. Description of the Related Art The non-impact recording method has recently attracted attention in that noise during recording is extremely small to a negligible level. Among them, the ink jet recording method that can directly perform high-speed recording on a recording medium with a simple mechanism and that can perform recording on plain paper is an extremely powerful recording method, and various methods have been proposed so far. ing.
【０００３】従来、この種のインクジェット記録装置
は、例えば特開昭６０−２２８１６２号公報に示される
ように、記録媒体背面に設けた対向電極とこれに対向し
た針状の排出電極間に電圧を印加し、発生した電界の静
電力によりインク等の色材を飛翔せしめ、記録を行う方
法が示されている。Conventionally, this type of ink jet recording apparatus has a voltage applied between a counter electrode provided on the back surface of a recording medium and a needle-shaped discharge electrode facing the counter electrode, as disclosed in Japanese Patent Application Laid-Open No. 60-228162, for example. A method is described in which a color material such as ink is caused to fly by the electrostatic force of an applied and generated electric field to perform recording.
【０００４】図７は従来のこの種のインクジェット記録
装置の斜視図、図８はその平面図、図６は電気泳動電極
と排出電極への印加電圧波形図である。FIG. 7 is a perspective view of this type of conventional ink jet recording apparatus, FIG. 8 is a plan view thereof, and FIG. 6 is a waveform diagram of voltage applied to an electrophoretic electrode and a discharge electrode.
【０００５】図７を参照すると、顔料系インク２９が満
たされているインク室１と、この顔料系インク２９中の
色材粒子を電気泳動現象によりインク吐出口２へ集中さ
せるための電気泳動電極３と、インク吐出口２へ集中し
た色材粒子を排出させ記録媒体４上に飛翔させるための
複数の排出電極２５と、排出電極２５に対向し記録媒体
４の背面に配設した対向電極７を有している。インク吐
出口２は各排出電極２５の先端で凸状の顔料系インク２
９のメニスカスができるように、流路壁２８により各排
出電極２５毎に仕切られている。インク室１は、インク
供給口２６とインク排出口２７とで不図示のインクタン
クとチューブにより接続されている。インク室１内の顔
料系インク２９は、背圧を付与されていてインク室１内
を強制的に循環している。Referring to FIG. 7, an ink chamber 1 filled with a pigment-based ink 29 and an electrophoretic electrode for concentrating color material particles in the pigment-based ink 29 to the ink discharge port 2 by an electrophoretic phenomenon. 3, a plurality of discharge electrodes 25 for discharging the color material particles concentrated on the ink discharge ports 2 to fly on the recording medium 4, and a counter electrode 7 disposed on the back surface of the recording medium 4 so as to face the discharge electrodes 25. have. The ink discharge port 2 has a convex pigment-based ink
Each discharge electrode 25 is partitioned by a flow path wall 28 so that nine meniscuses are formed. The ink chamber 1 is connected to an ink tank (not shown) by an ink supply port 26 and an ink discharge port 27 via a tube. The pigment-based ink 29 in the ink chamber 1 is forcibly circulating in the ink chamber 1 under a back pressure.
【０００６】次に動作について図６および図８を図７に
併せて参照して説明する。本装置は帯電している色材粒
子を含んでいる顔料系インクに電界を加えると色材粒子
が電界の下で一方向に動くという電気泳動現象を利用し
たものである。すなわち、電気泳動電極３に図６に示す
一定電圧Ｖ１を与え、顔料系インク２９が満たされてい
るインク室１に電界を加えると顔料系インク２９中の色
材粒子がインク吐出口２へある電気泳動速度で移動す
る。色材粒子の排出を行う排出電極２５に図６に示す電
圧Ｖ２、時間Ｔ２のパルス状排出電圧Ｖｅｊを印加する
と、静電気力によって色材粒子は排出電極２５の先端部
に移動し集中する。色材粒子は静電気力によってメニス
カス力、顔料系インクの表面張力や粘性力等に打ち勝っ
て、このパルス状の排出電圧Ｖｅｊに同期したタイミン
グで図８に示すように微小な飛翔粒子群８となって排出
電極２５の先端部から飛翔し、記録媒体４上に付着す
る。色材粒子の補給が行われ、この様な動作が繰り返さ
れて記録媒体４上に画像が形成される。一方、図８に示
すように色材粒子の排出を行う任意の排出電極２５以外
の色材粒子の排出を行わない排出電極は０Ｖとなってい
る。Next, the operation will be described with reference to FIGS. 6 and 8 together with FIG. This apparatus utilizes an electrophoretic phenomenon in which, when an electric field is applied to a pigment-based ink containing charged coloring material particles, the coloring material particles move in one direction under the electric field. That is, when a constant voltage V1 shown in FIG. 6 is applied to the electrophoretic electrode 3 and an electric field is applied to the ink chamber 1 filled with the pigment-based ink 29, the color material particles in the pigment-based ink 29 are present at the ink discharge ports 2. Move at electrophoretic speed. When a voltage V2 shown in FIG. 6 and a pulsed discharge voltage Vej for a time T2 shown in FIG. 6 are applied to the discharge electrode 25 for discharging the color material particles, the color material particles move to the tip of the discharge electrode 25 and concentrate due to the electrostatic force. The coloring material particles overcome the meniscus force, the surface tension and the viscous force of the pigment-based ink by the electrostatic force, and become fine flying particle groups 8 as shown in FIG. 8 at a timing synchronized with the pulsed discharge voltage Vej. And fly from the tip of the discharge electrode 25 and adhere to the recording medium 4. Color material particles are supplied, and such an operation is repeated to form an image on the recording medium 4. On the other hand, as shown in FIG. 8, the discharge electrodes that do not discharge the color material particles other than the discharge electrode 25 that discharges the color material particles are at 0V.
【０００７】[0007]
【発明が解決しようとする課題】しかし、上述したイン
クジェット記録装置において、色材粒子の排出を行う排
出電極（Ａ）と色材粒子の排出を行わない排出電極
（Ｂ）との電圧の印加方法が上述した方法では、排出電
極（Ａ）から排出電極（Ｂ）方向に電界が発生するた
め、排出電極（Ｂ）に色材粒子が移動してしまうという
問題点がある。However, in the above-described ink jet recording apparatus, a method of applying a voltage between the discharge electrode (A) for discharging the color material particles and the discharge electrode (B) for not discharging the color material particles. However, the above-described method has a problem in that an electric field is generated from the discharge electrode (A) in the direction of the discharge electrode (B), so that the color material particles move to the discharge electrode (B).
【０００８】また、排出電極（Ａ）から排出電極（Ｂ）
の方向に発生する電界強度を小さくするために排出電極
（Ｂ）に排出電極（Ａ）の印加電圧に近い電圧を印加す
ると色材粒子の排出を行わない排出電極（Ｂ）から色材
粒子が排出してしまうという問題点もある。[0008] Also, the discharge electrode (A) to the discharge electrode (B)
When a voltage close to the voltage applied to the discharge electrode (A) is applied to the discharge electrode (B) in order to reduce the electric field strength generated in the direction of (1), the color material particles are discharged from the discharge electrode (B) that does not discharge the color material particles. There is also a problem of discharging.
【０００９】[0009]
【課題を解決するための手段】本発明のインクジェット
記録装置は、顔料系インクが満たされているインク室
と、この顔料系インク中の色材粒子を電気泳動現象によ
りインク吐出口へ集中させるための電気泳動電極と、前
記インク吐出口へ集中した前記色材粒子を排出させて記
録媒体上に飛翔させるための複数の排出電極と、この排
出電極に対向した位置で前記記録媒体の背面に配設した
対向電極とを備えたインクジェット記録装置において、
前記排出電極への印加電圧を制御する第一の制御手段
と、任意の前記排出電極から前記色材粒子の排出を行う
ように前記対向電極への印加電圧を制御する第二の制御
手段とを備える。SUMMARY OF THE INVENTION An ink jet recording apparatus according to the present invention has an ink chamber filled with a pigment-based ink and a color material particle in the pigment-based ink which is concentrated at an ink discharge port by an electrophoretic phenomenon. An electrophoresis electrode, a plurality of discharge electrodes for discharging the color material particles concentrated on the ink discharge ports and causing the color material particles to fly onto a recording medium, and disposed on the back surface of the recording medium at a position facing the discharge electrode. In the ink jet recording apparatus provided with the provided counter electrode,
First control means for controlling the voltage applied to the discharge electrode, and second control means for controlling the voltage applied to the counter electrode so as to discharge the color material particles from any of the discharge electrodes. Prepare.
【００１０】また、本発明のインクジェット記録装置
は、前記色材粒子の排出を行う任意の前記排出電極へ前
記色材粒子が排出するしきい値電圧（Ｖｔｈ）以下の電
圧（Ｖ１）を、前記色材粒子の排出を行わない任意の前
記排出電極へ電圧（Ｖ１）より若干低い電圧（Ｖ２）を
印加し、任意の前記排出電極から前記色材粒子の排出を
行うときに前記対向電極に電圧（−Ｖ３）を印加するこ
とを特徴とする。Further, in the ink jet recording apparatus of the present invention, the voltage (V1) equal to or lower than a threshold voltage (Vth) at which the color material particles are discharged to any of the discharge electrodes for discharging the color material particles is applied. A voltage (V2) slightly lower than the voltage (V1) is applied to any of the discharge electrodes that do not discharge color material particles, and a voltage is applied to the counter electrode when the color material particles are discharged from any of the discharge electrodes. (-V3) is applied.
【００１１】[0011]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して詳細に説明する。図１は本発明の一実
施の形態のインクジェット記録装置の簡単な基本構造図
（平面図）、図２はこの実施の形態の排出電極（Ａ）お
よび排出電極（Ｂ）と対向電極への印加電圧波形図、図
３は排出電極（Ａ）近傍の色材粒子の分布図、図４は排
出電極（Ｂ）近傍の色材粒子の分布図、図５は排出電極
（Ａ）近傍の電界の方向図、図６は電気泳動電極と排出
電極への印加電圧波形図である。Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a simplified basic structural view (plan view) of an ink jet recording apparatus according to an embodiment of the present invention, and FIG. 2 is a discharge electrode (A) and an discharge electrode (B) of this embodiment and application to a counter electrode. FIG. 3 is a distribution diagram of color material particles near the discharge electrode (A), FIG. 4 is a distribution diagram of color material particles near the discharge electrode (B), and FIG. 5 is a diagram of an electric field near the discharge electrode (A). FIG. 6 is a directional diagram, and FIG. 6 is a waveform diagram of a voltage applied to the electrophoresis electrode and the discharge electrode.
【００１２】初めに、排出電極から色材粒子が排出でき
るために必要な排出電極と対向電極への印加電圧の関係
について説明する。色材粒子が排出電極から排出するた
めには排出電極と対向電極間である大きさの印加電圧差
が必要である。排出電極から色材粒子が排出できるとき
の排出電極と対向電極との最小の印加電圧差をしきい値
電圧Ｖｔｈとする。排出電極と対向電極への印加電圧差
がＶｔｈ以上のときは色材粒子が排出電極から排出し、
排出電極と対向電極への印加電圧差がＶｔｈより小さい
ときは色材粒子は排出電極から排出しない。First, the relationship between the discharge electrode and the voltage applied to the counter electrode necessary for discharging the color material particles from the discharge electrode will be described. In order for the color material particles to be discharged from the discharge electrode, an applied voltage difference of a certain magnitude between the discharge electrode and the counter electrode is required. The minimum applied voltage difference between the discharge electrode and the counter electrode when the color material particles can be discharged from the discharge electrode is defined as a threshold voltage Vth. When the applied voltage difference between the discharge electrode and the counter electrode is equal to or greater than Vth, the coloring material particles are discharged from the discharge electrode,
When the voltage difference between the discharge electrode and the counter electrode is smaller than Vth, the coloring material particles are not discharged from the discharge electrode.
【００１３】図１を参照すると、電気泳動電極３に図６
に示す一定電圧Ｖ１の電圧を与え、顔料系インクが満た
されているインク室１に電界を加えると顔料系インク中
の色材粒子がインク吐出口２へある電気泳動速度で移動
する。インク吐出口２に色材粒子が移動すると、図３に
示すようにメニスカス１３が生じる。Referring to FIG. 1, FIG.
Is applied, and an electric field is applied to the ink chamber 1 filled with the pigment-based ink, the color material particles in the pigment-based ink move at a certain electrophoretic speed to the ink discharge port 2. When the color material particles move to the ink discharge port 2, a meniscus 13 is generated as shown in FIG.
【００１４】制御部１０はコンピュータ等から入力イン
ターフェース９を経由して入力される印字データおよび
印字制御信号に応じて色材粒子の排出を行う排出電極
（Ａ）５と色材粒子の排出を行わない排出電極（Ｂ）６
に与えるべき電圧信号と対向電極７へ与えるべき電圧信
号とを決定し、排出電極電圧制御部１１と対向電極電圧
制御部１２に信号を送出する。排出電極電圧制御部１１
は制御部１０からの信号を検出すると排出電極（Ａ）５
には図２に示すしきい値電圧Ｖｔｈよりも若干低い電圧
Ｖ１，時間Ｔ１のパルス状の排出電圧Ｖｅｊを、排出電
極（Ｂ）６には図２に示す電圧Ｖ１よりも若干低い電圧
Ｖ２を印加する。また、対向電極電圧制御部１２は制御
部１０からの信号を検出すると対向電極７に図２に示す
電圧−Ｖ３を印加する。A control unit 10 discharges color material particles and discharges color material particles in accordance with print data and a print control signal input from a computer or the like via an input interface 9. No discharge electrode (B) 6
And the voltage signal to be applied to the common electrode 7 are determined, and the signals are sent to the discharge electrode voltage control unit 11 and the common electrode voltage control unit 12. Discharge electrode voltage controller 11
Detects the signal from the controller 10 and detects the discharge electrode (A) 5
A voltage V1 slightly lower than the threshold voltage Vth shown in FIG. 2 and a pulsed discharge voltage Vej at time T1. A voltage V2 slightly lower than the voltage V1 shown in FIG. Apply. Further, upon detecting a signal from the control unit 10, the counter electrode voltage control unit 12 applies the voltage -V3 shown in FIG.
【００１５】色材粒子の排出を行わない排出電極（Ｂ）
６には図２に示す電圧Ｖ２が印加されているが、排出電
極と対向電極との印加電圧差（Ｖ２＋Ｖ３）がしきい値
電圧Ｖｔｈよりも小さく（Ｖｔｈ＞Ｖ２＋Ｖ３）色材粒
子が排出電極（Ｂ）６の先端部に移動し集中するために
必要な静電気力を得られない。そのため図３に示すよう
な排出電極近傍の色材粒子の分布にはならず、排出電極
（Ｂ）６の先端部に移動するための静電気力が小さいの
で、メニスカス１３に働く表面張力により、図４に示す
ようにメニスカス１３がへこんでしまう。このため、色
材粒子は排出電極（Ｂ）６の基部に戻され、排出電極
（Ｂ）６の先端部には色材粒子の集中がないため、色材
粒子はインク吐出口２から排出しない。Discharge electrode (B) which does not discharge color material particles
2, the applied voltage difference (V2 + V3) between the discharge electrode and the counter electrode is smaller than the threshold voltage Vth (Vth> V2 + V3), and the color material particles are applied to the discharge electrode ( B) The electrostatic force required to move and concentrate on the tip of 6 cannot be obtained. Therefore, the distribution of the coloring material particles in the vicinity of the discharge electrode as shown in FIG. 3 does not occur, and the electrostatic force for moving to the tip of the discharge electrode (B) 6 is small. As shown in FIG. 4, the meniscus 13 is dented. Therefore, the color material particles are returned to the base of the discharge electrode (B) 6, and the color material particles are not discharged from the ink discharge port 2 because the color material particles are not concentrated at the tip of the discharge electrode (B) 6. .
【００１６】また、排出電極（Ｂ）６の電圧は図２に示
す排出電極（Ａ）５への印加電圧Ｖ１よりも若干低い電
圧Ｖ２であるため、排出電極（Ｂ）６と排出電極（Ａ）
５との間には図５に示す矢印Ａの電界による影響が非常
に少なくなり、排出電極（Ａ）５から排出電極（Ｂ）６
に向かって移動する色材粒子の量は少ない。Since the voltage of the discharge electrode (B) 6 is slightly lower than the voltage V1 applied to the discharge electrode (A) 5 shown in FIG. 2, the discharge electrode (B) 6 and the discharge electrode (A) )
The influence of the electric field indicated by the arrow A shown in FIG. 5 is very small between the discharge electrode (A) 5 and the discharge electrode (B) 6.
The amount of the color material particles moving toward is small.
【００１７】一方、排出電極（Ａ）５には図２に示す電
圧Ｖ１，時間Ｔ１のパルス状の排出電圧Ｖｅｊが印加さ
れる。排出電極（Ａ）５と対向電極７との印加電圧差
（Ｖ１＋Ｖ３）がしきい値電圧Ｖｔｈよりも大きい（Ｖ
ｔｈ≦Ｖ１＋Ｖ３）ため、静電気力によって色材粒子
は、図３に示すように、排出電極（Ａ）５の先端部に移
動し集中する。色材粒子は静電気力によってメニスカス
力、顔料系インクの表面張力や粘性力等に打ち勝って、
このパルス状の排出電圧Ｖｅｊに同期したタイミングで
微小な飛翔粒子群８となって排出電極（Ａ）５の先端部
から飛翔し、記録媒体４上に付着する。色材粒子の補給
が行われ、この様な動作が繰り返されて記録媒体４上に
画像が形成される。On the other hand, the discharge electrode (A) 5 is applied with a voltage V1 shown in FIG. 2 and a pulsed discharge voltage Vej at time T1. The applied voltage difference (V1 + V3) between the discharge electrode (A) 5 and the counter electrode 7 is larger than the threshold voltage Vth (V
(th ≦ V1 + V3), the coloring material particles move to the tip of the discharge electrode (A) 5 and concentrate due to the electrostatic force, as shown in FIG. The color material particles overcome the meniscus force, the surface tension and the viscous force of the pigment ink, etc. by the electrostatic force,
At the timing synchronized with the pulsed discharge voltage Vej, the flying particles 8 are formed into minute flying particles 8 and fly from the tip of the discharge electrode (A) 5 and adhere to the recording medium 4. Color material particles are supplied, and such an operation is repeated to form an image on the recording medium 4.
【００１８】[0018]
【発明の効果】以上説明したように、本発明は、排出電
極への印加電圧を制御する第一の制御手段と、任意の排
出電極から色材粒子の排出を行うように対向電極への印
加電圧を制御する第二の制御手段とを設け、色材粒子の
排出を行う任意の排出電極へ色材粒子が排出するしきい
値電圧（Ｖｔｈ）以下の電圧（Ｖ１）を、色材粒子の排
出を行わない任意の排出電極へ電圧（Ｖ１）より若干低
い電圧（Ｖ２）を印加し、任意の排出電極から色材粒子
の排出を行うときに対向電極に電圧（−Ｖ３）を印加す
るように制御したので、色材粒子の排出を行わない排出
電極から色材粒子が排出するのを防ぐことができる。As described above, according to the present invention, the first control means for controlling the voltage applied to the discharge electrode, and the application to the counter electrode so as to discharge the color material particles from any discharge electrode. A second control means for controlling the voltage, and applying a voltage (V1) equal to or lower than a threshold voltage (Vth) at which the color material particles are discharged to an arbitrary discharge electrode for discharging the color material particles; A voltage (V2) slightly lower than the voltage (V1) is applied to any discharge electrode that does not discharge, and a voltage (-V3) is applied to the counter electrode when discharging the color material particles from any discharge electrode. , It is possible to prevent the color material particles from being discharged from the discharge electrode that does not discharge the color material particles.
【００１９】また、色材粒子の排出を行う任意の排出電
極と色材粒子の排出を行わない任意の排出電極との印加
電圧差により発生する電界の影響により、色材粒子が色
材粒子の排出を行わない任意の排出電極に向かって移動
する量を少なくすることができる。Further, the color material particles are affected by an electric field generated by an applied voltage difference between an arbitrary discharge electrode for discharging the color material particles and an arbitrary discharge electrode for not discharging the color material particles. The amount of movement toward any discharge electrode that does not discharge can be reduced.
【図１】本発明の一実施の形態のインクジェット記録装
置の簡単な基本構造図（平面図）である。FIG. 1 is a simple basic structural diagram (plan view) of an ink jet recording apparatus according to an embodiment of the present invention.
【図２】この実施の形態の排出電極（Ａ）および排出電
極（Ｂ）と対向電極への印加電圧波形図である。FIG. 2 is a waveform diagram of a voltage applied to a discharge electrode (A), a discharge electrode (B), and a counter electrode in this embodiment.
【図３】排出電極（Ａ）近傍の色材粒子の分布図であ
る。FIG. 3 is a distribution diagram of color material particles near a discharge electrode (A).
【図４】排出電極（Ｂ）近傍の色材粒子の分布図であ
る。FIG. 4 is a distribution diagram of color material particles near a discharge electrode (B).
【図５】排出電極（Ａ）近傍の電界の方向図である。FIG. 5 is a direction diagram of an electric field near a discharge electrode (A).
【図６】電気泳動電極と排出電極への印加電圧波形図で
ある。FIG. 6 is a waveform diagram of a voltage applied to an electrophoresis electrode and a discharge electrode.
【図７】従来のインクジェット記録装置の斜視図であ
る。FIG. 7 is a perspective view of a conventional ink jet recording apparatus.
【図８】従来のインクジェット記録装置の平面図であ
る。FIG. 8 is a plan view of a conventional ink jet recording apparatus.
１ インク室 ２ インク吐出口 ３ 電気泳動電極 ４ 記録媒体 ５ 排出電極（Ａ） ６ 排出電極（Ｂ） ７ 対向電極 ８ 飛翔粒子群 ９ 入力インターフェース １０ 制御部 １１ 排出電極電圧制御部 １２ 対向電極電圧制御部 １３ メニスカス １４ 色材粒子 DESCRIPTION OF SYMBOLS 1 Ink chamber 2 Ink discharge port 3 Electrophoretic electrode 4 Recording medium 5 Discharge electrode (A) 6 Discharge electrode (B) 7 Counter electrode 8 Flying particle group 9 Input interface 10 Control unit 11 Discharge electrode voltage control unit 12 Counter electrode voltage control Part 13 Meniscus 14 Colorant particles
───────────────────────────────────────────────────── フロントページの続き (72)発明者 末次 淳一 新潟県柏崎市田尻工業団地7546 新潟日 本電気株式会社内 (72)発明者 島 和男 新潟県柏崎市田尻工業団地7546 新潟日 本電気株式会社内 (56)参考文献 特開 平９−164669（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B41J 2/06──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junichi Suetsugu 7546 Tajiri Industrial Park, Kashiwazaki City, Niigata Prefecture Niigata Nippon Electric Co., Ltd. (72) Inventor Kazuo Shima 7546 Tajiri Industrial Park, Kashiwazaki City, Niigata Prefecture Niigata Nippon Electric Co., Ltd. (56) References JP-A-9-164669 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) B41J 2/06
Claims (2)
と、この顔料系インク中の色材粒子を電気泳動現象によ
りインク吐出口へ集中させるための電気泳動電極と、前
記インク吐出口へ集中した前記色材粒子を排出させて記
録媒体上に飛翔させるための複数の排出電極と、この排
出電極に対向した位置で前記記録媒体の背面に配設した
対向電極とを備えたインクジェット記録装置において、
前記排出電極への印加電圧を制御する第一の制御手段
と、任意の前記排出電極から前記色材粒子の排出を行う
ように前記対向電極への印加電圧を制御する第二の制御
手段とを備えることを特徴とするインクジェット記録装
置。1. An ink chamber filled with a pigment-based ink, an electrophoretic electrode for concentrating coloring material particles in the pigment-based ink to an ink discharge port by an electrophoretic phenomenon, and a concentration in the ink discharge port. An ink jet recording apparatus comprising: a plurality of discharge electrodes for discharging the color material particles to fly on a recording medium; and a counter electrode disposed on a back surface of the recording medium at a position facing the discharge electrode. ,
First control means for controlling the voltage applied to the discharge electrode, and second control means for controlling the voltage applied to the counter electrode so as to discharge the color material particles from any of the discharge electrodes. An ink jet recording apparatus comprising:
出電極へ前記色材粒子が排出するしきい値電圧（Ｖｔ
ｈ）以下の電圧（Ｖ１）を、前記色材粒子の排出を行わ
ない任意の前記排出電極へ電圧（Ｖ１）より若干低い電
圧（Ｖ２）を印加し、任意の前記排出電極から前記色材
粒子の排出を行うときに前記対向電極に電圧（−Ｖ３）
を印加することを特徴とする請求項１記載のインクジェ
ット記録装置。2. A threshold voltage (Vt) at which the color material particles are discharged to any of the discharge electrodes for discharging the color material particles.
h) Applying the following voltage (V1) to any of the discharge electrodes that do not discharge the color material particles, a voltage (V2) slightly lower than the voltage (V1), and applying the color material particles from any of the discharge electrodes Voltage (-V3) is applied to the counter electrode when discharging
2. The ink jet recording apparatus according to claim 1, wherein the voltage is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1289096A JP2859192B2 (en) | 1996-01-29 | 1996-01-29 | Ink jet recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1289096A JP2859192B2 (en) | 1996-01-29 | 1996-01-29 | Ink jet recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09201969A JPH09201969A (en) | 1997-08-05 |
| JP2859192B2 true JP2859192B2 (en) | 1999-02-17 |
Family
ID=11817999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1289096A Expired - Fee Related JP2859192B2 (en) | 1996-01-29 | 1996-01-29 | Ink jet recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2859192B2 (en) |
-
1996
- 1996-01-29 JP JP1289096A patent/JP2859192B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09201969A (en) | 1997-08-05 |
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