JPH0232853A - Inkjet recording apparatus - Google Patents

Inkjet recording apparatus

Info

Publication number
JPH0232853A
JPH0232853A JP18433288A JP18433288A JPH0232853A JP H0232853 A JPH0232853 A JP H0232853A JP 18433288 A JP18433288 A JP 18433288A JP 18433288 A JP18433288 A JP 18433288A JP H0232853 A JPH0232853 A JP H0232853A
Authority
JP
Japan
Prior art keywords
ink
signal voltage
electrode
air
voltage
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
Application number
JP18433288A
Other languages
Japanese (ja)
Inventor
Hajime Oda
小田　元
Kenji Akami
研二 赤見
Koichi Saito
幸一 斉藤
Masayoshi Miura
眞芳 三浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18433288A priority Critical patent/JPH0232853A/en
Publication of JPH0232853A publication Critical patent/JPH0232853A/en
Pending legal-status Critical Current

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
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/02—Air-assisted ejection

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To make an ink return faster to an ink discharge port with improving the responding efficiency by providing two electrodes in an ink chamber of an inkjet recording apparatus which utilizes the air flow and electrostatic force, one being applied with a signal voltage and the other being applied with a signal voltage reverse to said signal voltage applied to said one electrode. CONSTITUTION:An electrode 112 is provided in the vicinity of an ink discharge port 107 of an ink chamber 106. An electrode 109 is always applied with a minus bias voltage Vb=-500V, while the electrode 112 is applied with a plus signal voltage Vs=+500V. When the signal voltage Vs is ON, a reverse signal voltage Vs' is at an OFF state (0V, or in a floating state), without particular influences upon the discharge of ink. As soon as the signal voltage Vs is turned OFF, the ink extended from the discharge port 107 is returned to the side of the port 107 due to the viscosity and the surface tension thereof etc. At this time, the reverse signal voltage Vs' becomes ON, resulting in addition of the force of the electric field to the ink. Accordingly, the returning speed of ink is increased, thereby improving the responding efficiency.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、微小開口よりインクを吐出して被記録物上に
文字、図形等を記録するインクジェット記録装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an inkjet recording apparatus that records characters, figures, etc. on a recording material by ejecting ink from a minute opening.

従来の技術 従来、空気流と静電力を利用して微小開口よシインクを
吐出するようにしたインクジェット記録装置として、例
えば特開昭５７−１２０４５２号公報や特開昭６２−３
９２５１号公報に記載されているような構成が知られて
いる。以下、従来のインクジェット記録装置について第
３図を参照しながら説明する。ボディ部材１０１の外壁
の先端に絶縁材製の空気ノズル板１０２が取付けられ、
内壁の先端に絶縁材製のインクノズル板１０３が取付け
られ、ボディ部材１０１の外壁と内壁の間に空気室１０
４が形成され、空気ノズル板１０２とインクノズル板１
０３の間に空気室１０４に連通ずる空気流路１０５が形
成され、インクノズル１０３の内側にインク室１０６が
形成されている。インクノズル板１０３にはインク吐出
口１０７が形成され、空気ノズル板１０２にはインク吐
出口１０７に対向して空気吐出口１０８が形成されてい
る。空気ノズル板１０２の外面には空気吐出口１０８の
外周において電極１０９が設けられている。空気室１０
４は空気供給管１１０により空気供給源（図示省略）に
連通され、インク室１０６は導電材製のインク供給管１
１１によりインク供給源（図示省略）に連通されている
。電極１０９とインク供給管１１１は信号源１１２に接
続されている。2. Description of the Related Art Conventionally, as an inkjet recording device that uses air flow and electrostatic force to eject ink through a minute aperture, for example, Japanese Patent Laid-Open No. 57-120452 and Japanese Patent Laid-Open No. 62-3 are known.
A configuration as described in Japanese Patent No. 9251 is known. Hereinafter, a conventional inkjet recording apparatus will be explained with reference to FIG. An air nozzle plate 102 made of an insulating material is attached to the tip of the outer wall of the body member 101,
An ink nozzle plate 103 made of an insulating material is attached to the tip of the inner wall, and an air chamber 10 is formed between the outer wall and the inner wall of the body member 101.
4 is formed, air nozzle plate 102 and ink nozzle plate 1
An air flow path 105 communicating with an air chamber 104 is formed between the ink nozzles 103 and an ink chamber 106 is formed inside the ink nozzle 103. The ink nozzle plate 103 has an ink discharge port 107 formed therein, and the air nozzle plate 102 has an air discharge port 108 formed opposite to the ink discharge port 107 . An electrode 109 is provided on the outer surface of the air nozzle plate 102 at the outer periphery of the air outlet 108 . Air chamber 10
4 is connected to an air supply source (not shown) through an air supply pipe 110, and the ink chamber 106 is connected to an ink supply pipe 1 made of a conductive material.
11 communicates with an ink supply source (not shown). Electrode 109 and ink supply tube 111 are connected to signal source 112 .

次に上記従来例について説明する。空気供給源よシ空気
が空気室１０４に送られ、これよシ急激な曲シを生じな
がら空気流路１０５に空気層として一定流速で流出し、
この空気が空気吐出口１０８及びインク吐出口１０７近
傍で急激な曲りを生じながら空気吐出口１０８より流出
している。一方、インク室１０６はインク供給源からの
インクで常時溝たされておシ、空気供給源よシ送られる
空気圧力によりインク供給源及びインク室１０６内のイ
ンクには一定の圧力が加えられている。これによジイン
クジエツト記録装置の非記録時に、空気流により生じる
インク吐出口１０７近傍の空気圧力とインク吐出口１０
７内のインク圧力がほぼ等しくインク吐出口１０７に生
じるインクのメニスカスが静止して保たれている。そし
て電極１０９とインク供給管１１１に電位差を生じさせ
ると、この電位差による静電力によってインク吐出口１
０７に生じているインクのメニスカスが空気吐出口１０
８の方向に引き伸ばされる。インク吐出口１０７がら空
気吐出口１０８に至る空気流路１０５には空気流によっ
て急激な圧力勾配の変化が生じているため、インク吐出
口１０７のインクのメニスカスは一定長さ以上引き伸ば
されると急激に加速され、空気吐出口１０８より吐出す
る。Next, the above conventional example will be explained. Air is sent from an air supply source to the air chamber 104, and then flows out into the air passage 105 as an air layer at a constant flow rate while making a sharp bend.
This air flows out from the air outlet 108 while making a sharp bend near the air outlet 108 and the ink outlet 107 . On the other hand, the ink chamber 106 is constantly filled with ink from the ink supply source, and a constant pressure is applied to the ink inside the ink supply source and the ink chamber 106 due to the air pressure sent from the air supply source. There is. As a result, when the di-inkjet recording device is not recording, the air pressure near the ink ejection port 107 generated by the air flow and the ink ejection port 10 are reduced.
Since the ink pressure within the ink discharge port 107 is approximately equal, the ink meniscus generated at the ink ejection port 107 is kept stationary. When a potential difference is generated between the electrode 109 and the ink supply tube 111, the electrostatic force caused by this potential difference causes the ink discharge port to
The ink meniscus generated at 07 is the air outlet 10
It is stretched in the direction of 8. Since the air flow path 105 from the ink ejection port 107 to the air ejection port 108 has a rapid pressure gradient change caused by the air flow, the meniscus of the ink at the ink ejection port 107 will suddenly change if it is stretched beyond a certain length. The air is accelerated and discharged from the air discharge port 108.

実際には、インクジェット記録ヘッドの応答性、吐出量
等の特性を考慮して、第４図（ａ）　、　（ｂ）に示す
ように電極１０９にはマイナスのバイアス電圧ｖｂ１イ
ンク供給管１１１にはプラス矩形波状の信号電圧Ｖｓ　
を印加する。バイアス電圧ｖｂは、インク吐出口１０７
におけるインクメニカスをやや凸状にしてインク吐出を
容易に行ない得る状態に設定しておく。このような状態
にしておくと信号電圧Ｖｓの値を下げることができる。In reality, taking into consideration the characteristics of the inkjet recording head such as responsiveness and ejection amount, a negative bias voltage vb1 is applied to the electrode 109, and a negative bias voltage vb1 is applied to the ink supply pipe 111, as shown in FIGS. 4(a) and 4(b). Positive rectangular wave signal voltage Vs
Apply. The bias voltage vb is applied to the ink ejection port 107
The ink menicus is made slightly convex so that ink can be easily ejected. If this state is maintained, the value of the signal voltage Vs can be lowered.

実際の駆動電圧としては、第４図（ｂ）に示すようにバ
イアス電圧ｖｂ−５００Ｖ１信号電圧■Ｓ＝＋５００ｖ
ニ設定シテする。As shown in Fig. 4(b), the actual driving voltage is bias voltage vb-500V1 signal voltage ■S=+500v
Configure the settings.

バイアス電圧ｖｂと信号電圧Ｖｓの極性を変えてバイア
ス電圧ｖｂをプラスに、信号電圧Ｖｓをマイナスにして
も、特性上それほど大きな差はない０ 発明が解決しようとする課題 上記従来例におけるバイアス電圧ｖｂと信号電圧Ｖｓの
信号形態を導入した場合においても、応答性は約ｌ　Ｑ
　ＫＨｚであり、高速度記録がますます要求される中、
応答性のさらなる向上が課題として残っていた。Even if the polarities of the bias voltage vb and the signal voltage Vs are changed to make the bias voltage vb positive and the signal voltage Vs negative, there is not that much difference in characteristics0 Problems to be Solved by the Invention Bias voltage vb in the above conventional example Even when the signal form of signal voltage Vs is introduced, the response is about lQ
KHz, and as high-speed recording is increasingly required,
Further improvement in responsiveness remained an issue.

本発明は、以上の課題に応えるもので、インクジェット
ヘッドの応答性の向上を目的とするものである。The present invention addresses the above-mentioned problems and aims to improve the responsiveness of an inkjet head.

課題を解決するだめの手段 上記目的を達成するために、請求項１の発明においては
、インク室内部のインク吐出口近傍とインク吐出口とは
離れた位置の２ケ所に電極を設け、インク吐出口近傍の
電極には信号電圧を印加し、インク吐出口とは離れた位
置の電極には、信号電圧とは逆位相の信号電圧を印加す
るものである。Means for Solving the Problems In order to achieve the above object, in the invention according to claim 1, electrodes are provided at two locations, one near the ink discharge port inside the ink chamber and the other at a position away from the ink discharge port. A signal voltage is applied to an electrode near the outlet, and a signal voltage having an opposite phase to the signal voltage is applied to an electrode located away from the ink ejection port.

請求項２の発明においては、インク室内部のインク吐出
口近傍とインク吐出口とは離れた位置の２ケ所に電極を
設け、インク吐出口近傍の電極には信号電圧を印加し、
インク吐出口とは離れた位置の電極に信号電圧とは逆位
相で、かつ位相を早めた電圧を印加するものである。In the invention as claimed in claim 2, electrodes are provided at two locations inside the ink chamber, one near the ink ejection port and the other at a position away from the ink ejection port, and a signal voltage is applied to the electrode near the ink ejection port.
A voltage that is opposite in phase to the signal voltage and advanced in phase is applied to an electrode located away from the ink ejection port.

作　　　　用 本発明は、上記構成にすることにより、インク吐出口か
ら引伸ばされ吐出完了したインクのインク吐出口側への
戻りを速め、応答性の向上を図るものである。Function: By having the above-mentioned configuration, the present invention aims to speed up the return of the ink that has been stretched and ejected from the ink ejection port to the ink ejection port side, thereby improving responsiveness.

実施例 以下、第１図を参照しながら本発明の実施例について説
明する。第１図は請求１記載の発明のインクジェット記
録装置の構造を示すものである。Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIG. FIG. 1 shows the structure of an inkjet recording apparatus according to the first aspect of the invention.

インク室１０６のインク吐出口１０７近傍には電極１１
２が設けられている。その他は、従来例で示した第３図
の構造と同様なので説明を省略する。An electrode 11 is located near the ink discharge port 107 of the ink chamber 106.
2 is provided. The rest is the same as the structure shown in FIG. 3 in the conventional example, so the explanation will be omitted.

第２図（ａ）に示したように、電極１０９にはマイナス
のバイアス電圧ｖｂ＝−５００ｖを常時印加し、電極１
１２には、プラスの信号電圧Ｖｓ　＝　＋　５００　Ｖ
を印加する。この状態で、通常の記録特性（特に応答性
）で記録が行なえる。さらに、導電性のインク供給管１
１１に信号電圧Ｖｓと逆位相の信号電圧Ｖｓ’　＝　十
ｘＶを印加する。As shown in FIG. 2(a), a negative bias voltage vb=-500v is constantly applied to the electrode 109, and the electrode 109 is
12, the positive signal voltage Vs = +500 V
Apply. In this state, recording can be performed with normal recording characteristics (particularly responsiveness). Furthermore, a conductive ink supply pipe 1
11, a signal voltage Vs'=10xV having an opposite phase to the signal voltage Vs is applied.

信号電圧ＶｓがＯＮ時には逆信号電圧ｖＳ′はＯＦＦ状
態（ｏＶ、もしくは浮いた状態でもよい）になっており
、インク吐出にほとんど影響を与えない。信号電圧Ｖｓ
がＯＦＦ状態になった瞬間、インク吐出口１０７よシ引
伸ばされたインクはインク吐出口１０７側へ、インクの
粘性や表面張力などのために、戻される。この時逆信号
電圧Ｖｓ’がＯＮ状態となり、この戻りに対して電界の
力がさらに加わる。従って、戻シの速度が速くなり、応
答性が向上する。逆信号電圧ｖｓ′の値Ｘは、＋５００
Ｖ前後もしくは、それ以上の値で効果が高くなシ、応答
性として、約２０％程向上する。When the signal voltage Vs is ON, the reverse signal voltage vS' is in an OFF state (oV or may be in a floating state) and has almost no effect on ink ejection. Signal voltage Vs
At the moment when the ink is turned off, the ink that has been stretched through the ink ejection port 107 is returned to the ink ejection port 107 side due to the viscosity and surface tension of the ink. At this time, the reverse signal voltage Vs' is in the ON state, and the force of the electric field is further applied to this return. Therefore, the return speed becomes faster and responsiveness improves. The value X of the reverse signal voltage vs' is +500
If the value is around V or above, the effect will be high, but the response will be improved by about 20%.

バイアス電圧ｖｂをプラスにとった場合には、Ｖｓ　、
　Ｖｓ’をマイナスにすれば、はとんど同様の結果が得
られる。When the bias voltage vb is set to positive, Vs,
If Vs' is made negative, almost the same result can be obtained.

第２図（ｂ）は請求項２記載の発明における信号波形図
を示す。この実施例は、第１図の構成のインクジェット
記録装置において、電圧１０９にはマイナスのバイアス
電圧Ｖｂ　＝　−５００Ｖを常時印加し、電極１１２に
は、プラスの信号電圧Ｖｓ＝＋５００Ｖを印加する。こ
の状態で、通常の記録特性（特に応答性）で記録が行な
える。この構成は第２図（ａ）に示した請求項１記載の
発明と共通である。本実施例においては、さらに、導電
性のインク供給管１１１に信号電圧ｖＳと逆でしかも位
相をΔｔだけ早めた信号電圧Ｖｓ　＝　＋　ｘＶを印加
する。FIG. 2(b) shows a signal waveform diagram in the invention according to claim 2. In this embodiment, in the inkjet recording apparatus having the configuration shown in FIG. 1, a negative bias voltage Vb = -500V is constantly applied to the voltage 109, and a positive signal voltage Vs = +500V is applied to the electrode 112. In this state, recording can be performed with normal recording characteristics (particularly responsiveness). This configuration is common to the invention according to claim 1 shown in FIG. 2(a). In this embodiment, a signal voltage Vs = + xV, which is opposite to the signal voltage vS and whose phase is advanced by Δt, is further applied to the conductive ink supply tube 111.

電極１１２とインク供給管１１１との間には、ある程度
の距離があり、インク室１０６内のインクの比抵抗、誘
電率によって、わずかな時間的遅れΔｔが生じる。従っ
て信号電圧ＶｓがＯＮになる時には、逆信号電圧■ｌを
Δｔだけ早めてＯＦＦ状態にする。また、信号電圧Ｖｓ
がＯＦＦになる時には逆信号電圧Ｖｓ＃をΔｔだけ早め
てＯＮ状態にすることによって、信号電圧ＶｓがＯＦＦ
になった瞬間、インク吐出口１０７よシ引伸ばされてい
たインクはインク吐出口１０７側へ、インクの粘性や表
面張力などのため戻されるが、それに加えて、遅れなく
・同時にこの戻シに対して電界の力が作用する。従って
戻りの速度が速くなり、応答性が向上する。There is a certain distance between the electrode 112 and the ink supply pipe 111, and a slight time delay Δt occurs depending on the resistivity and dielectric constant of the ink in the ink chamber 106. Therefore, when the signal voltage Vs turns ON, the reverse signal voltage 1 is advanced by Δt to turn it OFF. In addition, the signal voltage Vs
When the signal voltage Vs is turned OFF, the reverse signal voltage Vs# is advanced by Δt and turned ON.
At the moment when the ink is stretched out from the ink ejection port 107, it is returned to the ink ejection port 107 side due to the viscosity and surface tension of the ink. The force of the electric field acts on it. Therefore, the return speed becomes faster and responsiveness improves.

逆信号電圧ＶｓＯ値は、＋５００Ｖ前後もしくはそれ以
上の値で効果が高くなシ、応答性として、２０〜３０％
程度向上する。The effect is not high when the reverse signal voltage VsO value is around +500V or higher, and the response is 20 to 30%.
The degree of improvement.

バイアス電圧ｖｂをプラスにとった場合には、Ｖｓ　、
　Ｖｓをマイナスにすれば、はとんど同様の結果が得ら
れる。When the bias voltage vb is set to positive, Vs,
If Vs is made negative, almost the same result can be obtained.

発明の効果 以上のように、本発明は空気流と静電力を利用したイン
クジェット記録装置のインク室内に２つの電極を設け、
一方の電極に信号電圧を、他方の電極に信号電圧とは逆
の信号の電圧を印加することにより、インク吐出口への
インクの戻りを速め応答性を向上させることができ、そ
の効果は大きい。Effects of the Invention As described above, the present invention provides two electrodes in the ink chamber of an inkjet recording device that utilizes air flow and electrostatic force.
By applying a signal voltage to one electrode and a voltage with a signal opposite to the signal voltage to the other electrode, it is possible to speed up the return of ink to the ink ejection port and improve responsiveness, which has a large effect. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明のインクジェット記録装置の一実施例を
示す断面側面図、第２図（ａ）は第１図のインクジェッ
ト記録装置の動作波形の一実施例を示す波形図、第２図
（ｂ）は動作波形の他の実施例を示す波形図、第３図は
従来のインクジェット記録装置を示す断面側面図、第４
図（ａ）はその駆動電圧説明用の断面側面図、同図（ｂ
）は駆動電圧説明波形図である。 １０１・・・ボディ部材、１０２・・空気ノズル板、１
０３・・インクノズル板、１０４・・・空気室、１０５
　・空気流路、１０６・・・インク室、１０７・・イン
ク吐出口、１０８空気吐出口、１０９　　電極、１１０
・・・空気供給管、１１１・・・インク供給管、１１２
・・・電極。 代理人の氏名　弁理士　粟　野　重　孝　ほか１名第 図 第 図 （λつ （ね） ５ｏｏｖ −，ｓｃ０ＶFIG. 1 is a cross-sectional side view showing an embodiment of the inkjet recording apparatus of the present invention, FIG. b) is a waveform diagram showing another example of operation waveforms, FIG. 3 is a cross-sectional side view showing a conventional inkjet recording device, and FIG.
Figure (a) is a cross-sectional side view for explaining the driving voltage, and Figure (b) is a cross-sectional side view for explaining the driving voltage.
) is a waveform diagram illustrating the driving voltage. 101...Body member, 102...Air nozzle plate, 1
03... Ink nozzle plate, 104... Air chamber, 105
- Air flow path, 106... Ink chamber, 107... Ink discharge port, 108 Air discharge port, 109 Electrode, 110
... Air supply pipe, 111 ... Ink supply pipe, 112
···electrode. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (2)

【特許請求の範囲】[Claims] （１）インク吐出口に対向して空気吐出口を有する空気
ノズル板の表面側に設けられた第１の電極と、前記イン
ク吐出口に連通したインク室の内部にあって、前記イン
ク吐出口周辺に存在する第２の電極と、前記インク室の
内部にあって、第２の電極とは離れた位置に存在する第
３の電極を備え、第１の電極には、バイアス電圧を、第
２の電極には信号電圧を、第３の電極には、第２の電極
に印加された信号電圧とは逆位相の信号の電圧を、それ
ぞれ印加することを特徴とするインクジェット記録装置
。(1) A first electrode provided on the surface side of an air nozzle plate having an air ejection port facing the ink ejection port, and a first electrode provided inside an ink chamber communicating with the ink ejection port, A second electrode is provided at the periphery of the ink chamber, and a third electrode is provided inside the ink chamber and is located away from the second electrode. An inkjet recording apparatus characterized in that a signal voltage is applied to the second electrode, and a signal voltage having an opposite phase to the signal voltage applied to the second electrode is applied to the third electrode. （２）第３の電極に、第２の電極に印加される信号電圧
とは逆の位相で、かつ位相をわずかに早めた電圧を印加
する請求項１記載のインクジェット記録装置。(2) The inkjet recording apparatus according to claim 1, wherein a voltage is applied to the third electrode in a phase opposite to and slightly advanced in phase with respect to the signal voltage applied to the second electrode.
JP18433288A 1988-07-22 1988-07-22 Inkjet recording apparatus Pending JPH0232853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18433288A JPH0232853A (en) 1988-07-22 1988-07-22 Inkjet recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18433288A JPH0232853A (en) 1988-07-22 1988-07-22 Inkjet recording apparatus

Publications (1)

Publication Number Publication Date
JPH0232853A true JPH0232853A (en) 1990-02-02

Family

ID=16151460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18433288A Pending JPH0232853A (en) 1988-07-22 1988-07-22 Inkjet recording apparatus

Country Status (1)

Country Link
JP (1) JPH0232853A (en)

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