JPS61110559A - Ink jet recorder - Google Patents

Ink jet recorder

Info

Publication number
JPS61110559A
JPS61110559A JP23383484A JP23383484A JPS61110559A JP S61110559 A JPS61110559 A JP S61110559A JP 23383484 A JP23383484 A JP 23383484A JP 23383484 A JP23383484 A JP 23383484A JP S61110559 A JPS61110559 A JP S61110559A
Authority
JP
Japan
Prior art keywords
ink
nozzle
heat generating
present
inkjet recording
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.)
Granted
Application number
JP23383484A
Other languages
Japanese (ja)
Other versions
JPH064327B2 (en
Inventor
Shigeaki Sumiya
繁明 角谷
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 JP59233834A priority Critical patent/JPH064327B2/en
Publication of JPS61110559A publication Critical patent/JPS61110559A/en
Publication of JPH064327B2 publication Critical patent/JPH064327B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14088—Structure of heating means
    • B41J2/14112—Resistive element
    • B41J2/1412—Shape
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14032—Structure of the pressure chamber
    • B41J2/1404—Geometrical characteristics
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14387—Front shooter

Abstract

PURPOSE:To jet an ink droplet with low energy and improve response frequency, by disposing a heating part at a place recessed from the surrounding wall surface. CONSTITUTION:A base 1 is provided with a nozzle 2, a part of a base 3 opposed to the nozzle 2 is precessed, and the heating part 4 is provided in the recessed part. When the heating part 4 is operated on generate heat, a bubble 5 is generated, which grows while displacing the ink. In this case, since the ink can not escape in the passage direction, it is totally displaced while being provided with a momentum component in the nozzle direction. By the pressure in the nozzle direction thus generated, the ink droplet 6 is formed, and is ejected. Accordingly, the ink droplet can be jetted out with low energy, and the response frequency is improved.

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関するものである
◎ 〔従来の技術〕 従来、インクを加熱してその圧力でインクを吐出するイ
ンクジェット記録装置が提案されているが吐出圧力等が
弱く実用上問題点があった。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an inkjet recording device.◎ [Prior Art] Conventionally, an inkjet recording device has been proposed that heats ink and ejects the ink using the resulting pressure. However, the discharge pressure was weak and there were practical problems.

〔発明の解決しようとする問題点〕[Problem to be solved by the invention]

本発明のインクジェット記録装置はかかる欠点を除去し
、実用化に供せられる記録装置を提供することを目的と
する。An object of the inkjet recording apparatus of the present invention is to eliminate such drawbacks and provide a recording apparatus that can be put to practical use.

〔問題点を解決するための手段〕[Means for solving problems]

本発明のインクジェット記録装置は、対向する１対の基
板間にインク流路を形成すると共に前記基板の少なくと
も一方にインク吐出口を設け、該吐出口に対応して発熱
部を設けると共に、前記吐出口に対応して前記基板の少
なくとも一方の該基板部分に凹部を設けたことを特徴と
する特許 本発明のインクジェット記録装置のヘッドは、壁面Ａと
壁面Ｂの、２つの対向する壁面に挾まれた領域をインク
流路とし、壁面Ａにインク吐出ノズルを設け、壁面Ｂの
、前記インク吐出ノズルと対向する部分に発熱部を設け
た構造のインク吐出機構において、前記壁面Ｂ又は、人
のうち、前記発熱部の存在する部分を周囲の壁面に対し
てくぼませて、そのくぼみの中に前記発熱部が存在する
ようにしたものである◇ 〔実施例〕 第１図は本発明のインクジェット記録装置の実施例の主
要断面図である。基板Ａ１にノズル２があり、基板Ｂ３
の、ノズル２に対向する部分がくぼんでおり、そのくぼ
みの中に発熱部４がある。The inkjet recording apparatus of the present invention includes an ink flow path formed between a pair of opposing substrates, an ink ejection port provided in at least one of the substrates, a heat generating portion corresponding to the ejection port, and an ink flow path formed between a pair of opposing substrates. The head of the inkjet recording apparatus of the present invention is sandwiched between two opposing wall surfaces, wall surface A and wall surface B. In the ink ejection mechanism, the ink ejection mechanism has a structure in which an ink flow path is provided in an ink flow path, an ink ejection nozzle is provided on a wall surface A, and a heat generating portion is provided on a portion of the wall surface B that faces the ink ejection nozzle. , the part where the heat generating part is present is depressed against the surrounding wall surface so that the heat generating part is present in the depression ◇ [Example] Fig. 1 shows the inkjet recording of the present invention. 1 is a main cross-sectional view of an embodiment of the device; FIG. Nozzle 2 is on board A1, and nozzle 2 is on board B3.
The part facing the nozzle 2 is recessed, and the heat generating part 4 is located in the recess.

発熱部４を発熱させるとバブル５が発生し、そのバブル
５の成長につれてインクが押しのけられるが、その際、
流路方向にインクの逃げ場がないために、インクはすべ
てノズル方向の運動量成分を与えられて押しのけられる
。この時に生じるノズル方向の圧力によって、インク液
滴６が形成すれ、発射される。When the heat generating section 4 generates heat, bubbles 5 are generated, and as the bubbles 5 grow, the ink is pushed away.
Since there is no place for the ink to escape in the direction of the flow path, all of the ink is given a momentum component in the direction of the nozzle and is pushed away. Due to the pressure generated in the nozzle direction at this time, ink droplets 6 are formed and ejected.

第２図は本発明のインクジェット記録装置の別の実施例
の主要断面図であり、基板Ｂ３の発熱部４のある部分が
周囲に対してくぼんでいるという条件を満たしつつ、発
熱部がらさらに離れた所では基板Ｂ３が再びへこんでイ
ンク流路を広げ、インク供給をスムーズにしている。FIG. 2 is a main sectional view of another embodiment of the inkjet recording apparatus of the present invention, in which the heat generating part 4 is further separated from the substrate B3 while satisfying the condition that a certain part of the heat generating part 4 is recessed relative to the surroundings. At this point, the substrate B3 is recessed to widen the ink flow path and smooth ink supply.

第６図は本発明のインクジェット記録装置の他の実施例
であり、基板Ｂ側の凹部に発熱部４を設けたものである
。FIG. 6 shows another embodiment of the inkjet recording apparatus of the present invention, in which a heat generating section 4 is provided in a recess on the substrate B side.

なお、本発明においては、対向する基板上に凹部やイン
ク吐出口を形成したが、必ずしも基板でなくてもよく、
基板間にスペーサで形成したインクの壁面で良いことは
勿論である。Note that in the present invention, the recesses and ink ejection ports are formed on the opposing substrates, but they do not necessarily have to be the substrates.
Of course, an ink wall formed by a spacer between the substrates may be used.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明によれば、発熱部を周囲の壁面
よりくぼませた所に配置したため、バブル発生時に生じ
る圧力のうち流路方向に逃げる成分が減少し、圧力が効
率よくノズル方向に向けられるようになった。このため
に、低エネルギーでインク液滴が発射でき、応答周波数
も向上するという効果及び、周囲のノズルに及ぼす影響
が少なく、マルチノズル化した時にノズルが高密度化で
きるという効果を有す。As described above, according to the present invention, since the heat generating part is arranged in a place recessed from the surrounding wall surface, the component of the pressure generated when bubbles are generated that escapes in the flow path direction is reduced, and the pressure is efficiently transferred toward the nozzle. Now you can direct it. For this reason, ink droplets can be ejected with low energy, the response frequency is improved, and there is less influence on surrounding nozzles, and when multi-nozzles are formed, the nozzle density can be increased.

【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へラドの実
施例の主要断面図。 第２図は本発明のインクジェット記録装置のヘッドの他
の実施例の主要断面図。 第３図は本発明のインクジェット記録装置のヘッド部分
のその他の実施例。 以　　上FIG. 1 is a main sectional view of an embodiment of a spatula of an inkjet recording apparatus according to the present invention. FIG. 2 is a main sectional view of another embodiment of the head of the inkjet recording apparatus of the present invention. FIG. 3 shows another embodiment of the head portion of the ink jet recording apparatus of the present invention. that's all

Claims (1)

【特許請求の範囲】[Claims] 対向する１対の基板間にインク流路を形成すると共に前
記基板の少なくとも一方にインク吐出口を設け、該吐出
口に対応して発熱部を設けると共に、前記吐出口に対応
して前記基板の少なくとも一方の該基板部分に凹部を設
けたことを特徴とするインクジェット記録装置。An ink flow path is formed between a pair of opposing substrates, an ink ejection port is provided in at least one of the substrates, a heat generating portion is provided corresponding to the ejection port, and a heat generating portion is provided in the substrate corresponding to the ejection port. An inkjet recording device characterized in that a recess is provided in at least one of the substrate portions.
JP59233834A 1984-11-06 1984-11-06 Inkjet recording device Expired - Lifetime JPH064327B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59233834A JPH064327B2 (en) 1984-11-06 1984-11-06 Inkjet recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59233834A JPH064327B2 (en) 1984-11-06 1984-11-06 Inkjet recording device

Publications (2)

Publication Number Publication Date
JPS61110559A true JPS61110559A (en) 1986-05-28
JPH064327B2 JPH064327B2 (en) 1994-01-19

Family

ID=16961292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59233834A Expired - Lifetime JPH064327B2 (en) 1984-11-06 1984-11-06 Inkjet recording device

Country Status (1)

Country Link
JP (1) JPH064327B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255551A (en) * 1988-04-06 1989-10-12 Ricoh Co Ltd Liquid injection recording head
EP1172212A3 (en) * 2000-07-11 2002-03-27 Samsung Electronics Co., Ltd. Bubble-jet type ink-jet printhead
WO2011053277A1 (en) 2009-10-27 2011-05-05 Hewlett-Packard Development Company, L.P. Thermal inkjet printhead with heating element in recessed substrate cavity
JP2014231219A (en) * 2013-05-02 2014-12-11 キヤノン株式会社 Liquid discharge head and ink jet recorder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588660A (en) * 1981-07-09 1983-01-18 Canon Inc Liquid jet type recording head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588660A (en) * 1981-07-09 1983-01-18 Canon Inc Liquid jet type recording head

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01255551A (en) * 1988-04-06 1989-10-12 Ricoh Co Ltd Liquid injection recording head
EP1172212A3 (en) * 2000-07-11 2002-03-27 Samsung Electronics Co., Ltd. Bubble-jet type ink-jet printhead
US6761433B2 (en) 2000-07-11 2004-07-13 Samsung Electronics Co., Ltd. Bubble-jet type ink-jet printhead
WO2011053277A1 (en) 2009-10-27 2011-05-05 Hewlett-Packard Development Company, L.P. Thermal inkjet printhead with heating element in recessed substrate cavity
EP2493693A1 (en) * 2009-10-27 2012-09-05 Hewlett-Packard Development Company, L.P. Thermal inkjet printhead with heating element in recessed substrate cavity
KR20120099655A (en) * 2009-10-27 2012-09-11 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. Thermal inkjet printhead with heating element in recessed substrate cavity
EP2493693A4 (en) * 2009-10-27 2014-01-01 Hewlett Packard Development Co Thermal inkjet printhead with heating element in recessed substrate cavity
JP2014231219A (en) * 2013-05-02 2014-12-11 キヤノン株式会社 Liquid discharge head and ink jet recorder

Also Published As

Publication number Publication date
JPH064327B2 (en) 1994-01-19

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term