JPS60204352A - Ink jet recording head - Google Patents
Ink jet recording headInfo
- Publication number
- JPS60204352A JPS60204352A JP6056184A JP6056184A JPS60204352A JP S60204352 A JPS60204352 A JP S60204352A JP 6056184 A JP6056184 A JP 6056184A JP 6056184 A JP6056184 A JP 6056184A JP S60204352 A JPS60204352 A JP S60204352A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- flow path
- recording head
- resistor
- ink flow
- 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
- B41J2/055—Devices for absorbing or preventing back-pressure
-
- 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
- B41J2002/14403—Structure thereof only for on-demand ink jet heads including a filter
Landscapes
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】 〔技術分野〕 本発明は、インクジェット記録ヘッドに関する。[Detailed description of the invention] 〔Technical field〕 The present invention relates to an inkjet recording head.
詳しくは、インク流路の改良に関するものである。Specifically, the invention relates to improvement of the ink flow path.
従来のインクジェット記録ヘッド怖、記録へ。 Traditional inkjet recording heads are scary to record.
ド内のインク流路およびノズル部の液滴吐出口への流路
を短かくして、液流の円滑な流出と記録ヘッドの性能向
上を図る構成のものがあった。液滴吐出の為のエネルギ
ーロスが増大するため、液滴の吐出速度が遅く、安定性
が低下していた。また、ノズル流路の巾を広くすると高
密度なノズル配列が出来なくなシ、高品質な画像が得ら
れないという欠点があった。Some printers have a structure in which the ink flow path within the head and the flow path to the droplet ejection opening of the nozzle portion are shortened to ensure smooth outflow of the liquid flow and to improve the performance of the print head. Since the energy loss for ejecting the droplets increases, the ejection speed of the droplets is slow and the stability is reduced. Furthermore, if the width of the nozzle flow path is increased, a high-density nozzle arrangement cannot be achieved, and a high-quality image cannot be obtained.
本発明の目的は、改良されたインクジェット記録ヘッド
を提供することにある。An object of the present invention is to provide an improved inkjet recording head.
本発明のかかる目的は、インク流路の後方に液流の＊ｂ
を防ぐ、抵抗体が付設されたインクジェット記録ヘッド
によって達成される。Such an object of the present invention is to create a liquid flow *b behind the ink flow path.
This is achieved by using an inkjet recording head equipped with a resistor to prevent this.
本発明の一実施例について図面を参照にして説明する。 An embodiment of the present invention will be described with reference to the drawings.
第１図は従来例で、第２図、第３図は本実施例である。FIG. 1 shows a conventional example, and FIGS. 2 and 3 show this embodiment.
１はインク流路で２はオリフィス、３は吐出エネルギー
発生体たとえばヒーター又は圧電素子であシ、該エネル
ギー発生体３はインク流路１に設けられている。４はノ
ズルであシ、５は抵抗体でおる。抵抗体５はインク流路
１の後背部分の近傍またはインク流路１の内側に付設さ
れる。1 is an ink flow path, 2 is an orifice, and 3 is an ejection energy generator such as a heater or a piezoelectric element; the energy generator 3 is provided in the ink flow path 1. 4 is a nozzle, and 5 is a resistor. The resistor 5 is attached near the rear portion of the ink flow path 1 or inside the ink flow path 1.
第２図において、エネルギー発生体３によって発生した
エネルギーは、オリフィス２およびノズル４の後方に作
用する。ノズル４の後方に向う圧力は抵抗体５によシ反
作用を受けるために、ノズル４方向への圧力にはエネル
ギーのロスが少なくなる。従って、ノズル４の先端から
吐出する液滴の吐出エネルギーが、抵抗体５の無い場合
に比べて、増大するために吐出速度が増加し、吐出の安
定性が極めて向上する。抵抗体５の付設によって、イン
ク流路１を短かくしても吐出が安定するため、エネルギ
ー発生体３への指令とノズル４からの吐出との応答性が
極めて向上する。In FIG. 2, the energy generated by the energy generator 3 acts behind the orifice 2 and the nozzle 4. In FIG. Since the pressure toward the rear of the nozzle 4 is reacted by the resistor 5, energy loss in the pressure toward the nozzle 4 is reduced. Therefore, the ejection energy of the droplet ejected from the tip of the nozzle 4 is increased compared to the case without the resistor 5, so that the ejection speed is increased and the stability of ejection is greatly improved. By providing the resistor 5, the ejection is stabilized even if the ink flow path 1 is shortened, so the responsiveness between the command to the energy generator 3 and the ejection from the nozzle 4 is greatly improved.
第３図は、抵抗体５を流体素子としたもので、これによ
ジオリフイス内のインク流圧力は制御される。即ち、逆
方向の流体抵抗は犬きくなシ、順方向の流体抵抗は極め
て少ない。このことから吐出時のエネルギーロスは少な
く、また、インク供給時の流体抵抗は小さいために、容
易にインク流路１にインクを供給することができる。In FIG. 3, the resistor 5 is used as a fluid element, which controls the ink flow pressure within the georifice. That is, the fluid resistance in the reverse direction is extremely small, and the fluid resistance in the forward direction is extremely small. Therefore, energy loss during ejection is small, and fluid resistance during ink supply is small, so ink can be easily supplied to the ink flow path 1.
第４図はインク流路１の３方を閉塞し、インクの供給を
ノズル４の側面から行なわせる記録へ。In FIG. 4, three sides of the ink flow path 1 are closed, and ink is supplied from the side of the nozzle 4 for recording.
ドを示す。３方向閉塞によシ液滴の吐出方向が制御され
てエネルギーロスが低減され、安定性が極めて向上する
。Indicates the mode. The three-way blockage controls the ejection direction of droplets, reduces energy loss, and greatly improves stability.
本発明によれば、改良されたインク流路によって、イン
クの供給と液滴の吐出エネルギーが効率良く用いられて
、吐出の安定性が図れたインクジェット記録ヘッドが得
られる。According to the present invention, it is possible to obtain an inkjet recording head in which ink supply and droplet ejection energy are efficiently used by the improved ink flow path, resulting in stable ejection.
第１図は従来例のインクジェット記録ヘッドの概略図、
第２図、第３図、第４図は本発明のインクジェット記録
ヘッドの概略図である。
１・・・インク流路、２・・・オリフィス、３・・・エ
ネルギー発生体、４・・・ノズル、５・・・抵抗体。FIG. 1 is a schematic diagram of a conventional inkjet recording head.
FIG. 2, FIG. 3, and FIG. 4 are schematic diagrams of the inkjet recording head of the present invention. DESCRIPTION OF SYMBOLS 1... Ink channel, 2... Orifice, 3... Energy generator, 4... Nozzle, 5... Resistor.
Claims (2)
抵抗体を付設したことを特徴とするインクジェット記録
へ、ド。(1) Inkjet recording characterized by having a resistor attached to the ink flow path to reduce backward outflow.
は閉鎖していることを特徴とする特許請求の範囲第１項
記載のインクジェット記録ヘッド。(2) The inkjet recording head according to claim 1, wherein the ink flow path is open only in the ejection direction and closed in the remaining three directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6056184A JPS60204352A (en) | 1984-03-30 | 1984-03-30 | Ink jet recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6056184A JPS60204352A (en) | 1984-03-30 | 1984-03-30 | Ink jet recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60204352A true JPS60204352A (en) | 1985-10-15 |
Family
ID=13145800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6056184A Pending JPS60204352A (en) | 1984-03-30 | 1984-03-30 | Ink jet recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60204352A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159354A (en) * | 1990-01-17 | 1992-10-27 | Canon Kabushiki Kaisha | Liquid jet recording head having tapered liquid passages |
| US5900894A (en) * | 1996-04-08 | 1999-05-04 | Fuji Xerox Co., Ltd. | Ink jet print head, method for manufacturing the same, and ink jet recording device |
| US5988798A (en) * | 1991-01-17 | 1999-11-23 | Canon Kabushiki Kaisha | Fluid ejection head with multi-dimensional fluid path |
| US6022100A (en) * | 1991-03-20 | 2000-02-08 | Canon Kabushiki Kaisha | Liquid jet recording head having internal structure for controlling droplet ejection and ink flow |
| EP2340938A1 (en) * | 2002-07-03 | 2011-07-06 | Dimatix, Inc. | Printhead |
-
1984
- 1984-03-30 JP JP6056184A patent/JPS60204352A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159354A (en) * | 1990-01-17 | 1992-10-27 | Canon Kabushiki Kaisha | Liquid jet recording head having tapered liquid passages |
| US6224197B1 (en) | 1990-01-17 | 2001-05-01 | Canon Kabushiki Kaisha | Liquid jet recording head having tapered liquid passages |
| US5988798A (en) * | 1991-01-17 | 1999-11-23 | Canon Kabushiki Kaisha | Fluid ejection head with multi-dimensional fluid path |
| US6022100A (en) * | 1991-03-20 | 2000-02-08 | Canon Kabushiki Kaisha | Liquid jet recording head having internal structure for controlling droplet ejection and ink flow |
| US5900894A (en) * | 1996-04-08 | 1999-05-04 | Fuji Xerox Co., Ltd. | Ink jet print head, method for manufacturing the same, and ink jet recording device |
| EP2340938A1 (en) * | 2002-07-03 | 2011-07-06 | Dimatix, Inc. | Printhead |
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