JPH0747674A - Ink jet recorder - Google Patents

Ink jet recorder

Info

Publication number
JPH0747674A
JPH0747674A JP17945194A JP17945194A JPH0747674A JP H0747674 A JPH0747674 A JP H0747674A JP 17945194 A JP17945194 A JP 17945194A JP 17945194 A JP17945194 A JP 17945194A JP H0747674 A JPH0747674 A JP H0747674A
Authority
JP
Japan
Prior art keywords
ink
heating element
nozzle
recording
ink droplet
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
JP17945194A
Other languages
Japanese (ja)
Inventor
Shizuo Saito
静雄 斎藤
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP17945194A priority Critical patent/JPH0747674A/en
Publication of JPH0747674A publication Critical patent/JPH0747674A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To realize significant enhancement in the recording/writing speed by arranging ink pressurizing means, i.e., heating elements, on the rear inner face spaced apart by a distance corresponding to the quantity of ink droplet being jetted from the open end of nozzle. CONSTITUTION:A single ink sump 3 is communicated with an ink supply port 2 is formed in a base body 1 constituting a recording head in the longitudinal direction thereof and a large number of nozzles 5... are opened, as orifices 4, on one side of the base body 1. In this regard, a heating element 6 comprising an electric resistor is disposed on the rear inner face spaced apart by a distance corresponding to the quantity of ink droplet being jetted from the open end of each nozzle 5. A voltage corresponding to recording information is then applied to a required heating element 6 thus evaporating and expanding the ink in the vicinity of the heating element 6. The pressure is then applied to ink being held stably while forming meniscus thus jetting an ink droplet onto a recording medium.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はインクジェット記録装置
に関し、より詳しくは熱エネルギを利用してインク滴を
吐出する形式の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 of the type that ejects ink droplets by utilizing heat energy.

【0002】[0002]

【従来の技術】インクタンクと吐出口を結ぶ流路内に圧
電素子を配設し、これに信号電圧を印加して歪ませるこ
とにより流路内のインクを加圧し、その一部を吐出口よ
りインク液滴として記録媒体上に吐出させるようにした
オンデマンド型のインクジェット記録装置は、圧電素子
の配設に大きなスペ−スを要するためノズル先端までの
流路長が必然的に長くなって、インク滴の吐出応答性が
悪いといった問題を有している。
2. Description of the Related Art A piezoelectric element is arranged in a flow path connecting an ink tank and a discharge port, and a signal voltage is applied to the piezoelectric element to distort the ink in the flow path to partially press the ink. In an on-demand type ink jet recording apparatus in which ink droplets are ejected onto a recording medium, a large space is required for disposing the piezoelectric element, so that the flow path length to the nozzle tip is inevitably long. However, there is a problem that the ink droplet ejection response is poor.

【0003】[0003]

【発明が解決しようとする課題】本発明はこのような問
題に鑑みてなされたもので、その目的とするところは記
録速度を大巾に高めることのできる新たなインクジェッ
ト記録装置を提供することにある。
The present invention has been made in view of the above problems, and an object of the present invention is to provide a new ink jet recording apparatus capable of greatly increasing the recording speed. is there.

【0004】[0004]

【課題を解決するための手段】すなわち、本発明はこの
ような課題を達成するためのインクジェット記録装置と
して、インク加圧手段としての発熱体を、一端がインク
溜室に連通し他端がオリフィスとして開口するノズルの
開口端から吐出させるべきインク滴の量に相当する距離
を隔てたその後方内面に一体的に配設するようにしたも
のである。
That is, according to the present invention, as an ink jet recording apparatus for achieving such a problem, a heating element as an ink pressurizing means is provided with one end communicating with an ink reservoir and an orifice at the other end. Is integrally formed on the rear inner surface thereof with a distance corresponding to the amount of ink droplets to be ejected from the opening end of the nozzle.

【0005】[0005]

【作用】このように構成したことにより、インクを加熱
し気化膨張させた際の圧力を発熱体の直前に位置するイ
ンクに作用させて、これをインク滴として瞬間的に吐出
させる。
With this structure, the pressure when the ink is heated and vaporized and expanded acts on the ink located immediately before the heating element, and the ink is instantaneously ejected as an ink droplet.

【0006】[0006]

【実施例】そこで以下に図示した実施例について説明す
る。図1は本発明の一実施例を示したもので、記録ヘッ
ドを構成する基体1には、インク供給口2に連通する単
一のインク溜室3が基体1の長手方向に形成されてい
て、ここには、基体1の一側にオリフィス4として開口
する多数のノズル5…が連通している。
Embodiments Now, the embodiments shown in the drawings will be described. FIG. 1 shows an embodiment of the present invention. A single ink reservoir chamber 3 communicating with an ink supply port 2 is formed in a longitudinal direction of the substrate 1 which constitutes a recording head. A large number of nozzles 5 that open as orifices 4 communicate with one side of the base 1 here.

【0007】6は、ノズル5の開口端から吐出させるべ
きインク滴の量に相当する距離を隔てたその後方内面に
設けた電気抵抗体よりなる発熱体で、これらの発熱体6
…は、基体1の側方へ伸びる共通電極7を介して単一の
リ−ド線8に接続する一方、各ノズル5…に沿って基体
1の他側へと伸びる個々の信号電極9…を介して対応す
るリ−ド線10…のそれぞれに接続し、記録情報に応じ
た電圧が選択的に印加されるように構成されている。
Reference numeral 6 denotes a heating element made of an electric resistor provided on the inner surface of the rear of the nozzle 5 at a distance corresponding to the amount of ink droplets to be ejected from the opening end of the nozzle 5.
Are connected to a single lead wire 8 via a common electrode 7 extending laterally of the substrate 1, while individual signal electrodes 9 extending to the other side of the substrate 1 along each nozzle 5. Is connected to each of the corresponding lead lines 10 through., And a voltage according to the recorded information is selectively applied.

【0008】このように構成されたインクジェット記録
装置は、信号電極9を介して記録情報に応じた電圧が所
要の発熱体6に印加すると、抵抗体よりなるその発熱体
6はその近傍のインクを加熱して気化して膨張させ、そ
の際の圧力をその前方でメニスカスを形成して安定的に
保持されているインクに作用させて、これを直ちにイン
ク滴として図示しない記録媒体上に吐出させ、そこに一
画素分のドットを形成する。
In the ink jet recording apparatus thus constructed, when a voltage corresponding to the recording information is applied to the required heating element 6 via the signal electrode 9, the heating element 6 made of a resistor will eject ink in the vicinity thereof. It is heated to vaporize and expand, and the pressure at that time acts on the ink that is stably held by forming a meniscus in front of it, and immediately ejects it as an ink droplet onto a recording medium (not shown), A dot for one pixel is formed there.

【0009】[0009]

【発明の効果】以上述べたように本発明によれば、イン
ク加圧手段としての発熱体をノズルの開口端から吐出さ
せるべきインク滴の量に相当する距離を隔てた後方内面
に配設したので、記録情報に応じた電圧を抵抗体として
の発熱体に印加することによって、その部分のインクを
加熱気化し、その際の膨張圧をその直前のインクに伝え
てこれを直ちにインク滴として吐出させることができ、
この種のインクジェット記録装置の記録書込み速度を大
巾に向上させることができる。
As described above, according to the present invention, the heating element as the ink pressurizing means is arranged on the rear inner surface at a distance corresponding to the amount of the ink droplet to be ejected from the opening end of the nozzle. Therefore, by applying a voltage according to the recorded information to the heating element as a resistor, the ink in that portion is heated and vaporized, the expansion pressure at that time is transmitted to the ink immediately before, and this is immediately ejected as an ink droplet. Can be
The recording / writing speed of this type of inkjet recording apparatus can be greatly improved.

【0010】しかも、発熱体に加える熱エネルギ−の量
の如何に拘りなく、発熱体の前方に位置する一定量のイ
ンクをインク滴として吐出させることができるため、吐
出量を均一に制御するための機構を不要にすることがで
きるばかりでなく、気化したインクをインク滴とともに
ノズル外に放出することができるため、記録書込みに伴
って生じる記録ヘッドの熱的上昇をその分抑えることが
できる。
Moreover, regardless of the amount of heat energy applied to the heating element, a fixed amount of ink located in front of the heating element can be ejected as ink droplets, so that the ejection amount is controlled uniformly. In addition to not requiring the mechanism of (1), the vaporized ink can be discharged to the outside of the nozzle together with the ink droplet, so that the thermal rise of the recording head caused by recording and writing can be suppressed accordingly.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例をなす装置の断面図である。FIG. 1 is a cross-sectional view of an apparatus that constitutes an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 基体 3 インク溜室 5 ノズル 6 発熱体 7 共通電極 8 リード線 9 電極 10 リード線 1 Base 3 Ink Reservoir 5 Nozzle 6 Heating Element 7 Common Electrode 8 Lead Wire 9 Electrode 10 Lead Wire

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 インク加圧手段としての発熱体を、一端
がインク溜室に連通し他端がオリフィスとして開口する
ノズルの上記開口端から吐出させるべきインク滴の量に
相当する距離を隔てたその後方内面に一体的に配設した
ことを特徴とするインクジェット記録装置。
1. A heating element as an ink pressurizing means is separated from the opening end of a nozzle having one end communicating with an ink reservoir and the other end opening as an orifice, with a distance corresponding to the amount of ink droplets to be ejected. An ink jet recording apparatus, characterized in that the ink jet recording apparatus is integrally provided on the rear inner surface.
JP17945194A 1994-07-07 1994-07-07 Ink jet recorder Pending JPH0747674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17945194A JPH0747674A (en) 1994-07-07 1994-07-07 Ink jet recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17945194A JPH0747674A (en) 1994-07-07 1994-07-07 Ink jet recorder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3356024A Division JPH0725165B2 (en) 1991-12-20 1991-12-20 Inkjet recording device

Publications (1)

Publication Number Publication Date
JPH0747674A true JPH0747674A (en) 1995-02-21

Family

ID=16066094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17945194A Pending JPH0747674A (en) 1994-07-07 1994-07-07 Ink jet recorder

Country Status (1)

Country Link
JP (1) JPH0747674A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459139A (en) * 1977-10-19 1979-05-12 Canon Inc Recording head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5459139A (en) * 1977-10-19 1979-05-12 Canon Inc Recording head

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Effective date: 19951107