JPH04169238A - Ink-jet record head - Google Patents
Ink-jet record headInfo
- Publication number
- JPH04169238A JPH04169238A JP29768690A JP29768690A JPH04169238A JP H04169238 A JPH04169238 A JP H04169238A JP 29768690 A JP29768690 A JP 29768690A JP 29768690 A JP29768690 A JP 29768690A JP H04169238 A JPH04169238 A JP H04169238A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- plate
- ink
- attached
- nozzles
- 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
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 abstract description 8
- 239000010893 paper waste Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 scum Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
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ヘッドに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an inkjet recording head.
（従来の技術）
従来インクジェット記録ヘッドにおし）て、インク粒を
吐出するノズルを、プラスチ・ツク材料に穿設して形成
していた。第７図に示すように金属、プラスチック、ガ
ラス等によって作られたインク流路を備えた基板１０を
、基板保護としてケース３で凹み、ケース全面にインク
粒を吐出するためのノズル５をプラスチック材料に穿設
したノズルプレート１を固定している。このようなイン
クジェット記録ヘッドにおいて、印字するときの用紙に
よるノズルプレート１への擦れ、金属片、塵、はこり等
によりノズルプレート１の面、ノズル５に微少な傷を形
成してしまう。ノズル５に傷を発生した場合、インクジ
ェット記録ヘッドの主たる目的である、インク粒を安定
して吐出させるということが不可能となりインク粒が本
来吐出する方向と異なる方向へ吐出してしまう。また、
塵、はこり、印字用紙による紙屑等の異物のノズル５へ
の付着、侵入により、目的とするインク粒が得られなく
なる。また、ノズルプレート１ヘキヤツプ１１をノズル
プレート１の面へ吸着させてキャップ１１内を負圧にし
てノズル５へ詰まった異物を吸い出す際に、ノズルプレ
ート１の面に形成された傷によりキャップ１１の吸着が
不十分になるという問題がある。(Prior Art) In a conventional inkjet recording head, nozzles for ejecting ink droplets were formed by drilling them into a plastic material. As shown in FIG. 7, a substrate 10 with an ink flow path made of metal, plastic, glass, etc. is recessed in a case 3 to protect the substrate, and a nozzle 5 for ejecting ink droplets over the entire surface of the case is made of plastic material. A nozzle plate 1 drilled in the hole is fixed. In such an inkjet recording head, minute scratches are formed on the surface of the nozzle plate 1 and the nozzles 5 due to rubbing of the nozzle plate 1 by paper, metal pieces, dust, chips, etc. during printing. If the nozzle 5 is damaged, it becomes impossible to stably eject ink droplets, which is the main purpose of an inkjet recording head, and the ink droplets are ejected in a direction different from the direction in which they are originally ejected. Also,
Due to adhesion or intrusion of foreign matter such as dust, scum, paper waste from printing paper, etc. to the nozzle 5, it becomes impossible to obtain the desired ink droplets. In addition, when the cap 11 of the nozzle plate 1 is attracted to the surface of the nozzle plate 1 to create a negative pressure inside the cap 11 and suck out the foreign matter clogged in the nozzle 5, the cap 11 may be damaged due to scratches formed on the surface of the nozzle plate 1. There is a problem that adsorption becomes insufficient.
（！！明が解決しようとする課題）
本発明はインクジェット記録ヘッドにおいて、インク粒
を吐出するノズルをプラスチック材料で形成したノズル
プレートへの印字するときの用紙による擦れ、金属片、
塵、はこり等の異物の接触等によりノズルプレートに穿
設したノズル、及びその面への傷を防ぐインクジェット
記録ヘッドを提供することを目的とする。(!!Problems to be Solved by Akira) The present invention provides an inkjet recording head in which nozzles for ejecting ink droplets are used to print on a nozzle plate made of a plastic material.
An object of the present invention is to provide an inkjet recording head that prevents nozzles formed in a nozzle plate and their surfaces from being damaged due to contact with foreign objects such as dust and scum.
（課題を解決するための手段）
このような問題を解決するため、本発明において、プラ
スチック材料で形成されたノズルプレートにノズルを穿
設したインクジェット記録ヘッドにおける、ノズル周囲
に、金属材料で形成されたノズル保護プレートを備えた
。(Means for Solving the Problems) In order to solve such problems, in the present invention, in an inkjet recording head in which nozzles are formed in a nozzle plate formed of a plastic material, a metal material is formed around the nozzles. Equipped with a nozzle protection plate.
（実施例）
そこで以下に本発明の詳細を図示した実施例に基づいて
説明する。(Example) The details of the present invention will be described below based on illustrated examples.
第１図は、本発明での一実施例でありノズル列に対して
垂直方向への断面図を示す。同図においてケース３に装
着されたノズル５を穿設したプラスチック材料で形成さ
れたノズルプレート１に、ノズル５を避けるように、例
えば板厚２０〜１００μｍ、材質ステンレスのノズル保
護プレート２を固定する。ノズル保護プレート２のノズ
ル５の近傍部にはテーバ４を備えた。ノズル５の付近に
付着した印字用紙による紙屑、金属片、塵、はこり等の
異物、ノズルプレートｌ上に付着した印字用紙による紙
屑、金属片、塵、はこり等の異物をゴムブレードを用い
て除去する際に、テーバ４がある場合とない場合とでは
、テーバ４がある場合の方が細かい異物、また、ノズル
プレート１の細部に付着した異物をも除去できる。FIG. 1 shows an embodiment of the present invention, and is a sectional view taken in a direction perpendicular to the nozzle array. In the same figure, a nozzle protection plate 2 made of stainless steel and having a thickness of 20 to 100 μm, for example, is fixed to a nozzle plate 1 made of plastic material with nozzles 5 bored therein, which is attached to a case 3 so as to avoid the nozzles 5. . A taper 4 is provided in the vicinity of the nozzle 5 of the nozzle protection plate 2. Use a rubber blade to remove foreign objects such as paper scraps, metal pieces, dust, and lumps from the printing paper attached to the vicinity of the nozzle 5, and foreign substances such as paper scraps, metal pieces, dust, and lumps from the printing paper attached to the nozzle plate l. When removing the nozzle plate 1 with or without the taber 4, the case with the taber 4 makes it possible to remove finer foreign matter as well as foreign matter adhering to the details of the nozzle plate 1.
第２図は第１図での実施例と同様、ケース３にノズル５
を穿設したノズルプレート１を装着し、ノズルを避ける
ようにノズル保護プレート２を固定し、更にノズルプレ
ート１に穿設したノズル５のインク粒吐出側に、溝また
は円形状の凹部６を備えたインクジェット記録ヘッドを
−示す。第３図は第２図でのノズル５の近傍の断面を示
す。この凹部６はノズル５を異物による損傷から保護す
るためのものである。この凹部６を備えた時もノズル保
護プレート２に第１図で示したようなテーバ４をノズル
保護プレート２に備えることによって凹部６、ノズル５
に付着した異物を第１図での説明と同様に、異物を除去
し易くなる。In FIG. 2, the nozzle 5 is installed in the case 3, similar to the embodiment shown in FIG.
A nozzle plate 1 having holes therein is attached, a nozzle protection plate 2 is fixed so as to avoid the nozzles, and a groove or a circular recess 6 is provided on the ink drop ejection side of the nozzle 5 formed on the nozzle plate 1. This figure shows an inkjet recording head. FIG. 3 shows a cross section near the nozzle 5 in FIG. 2. This recess 6 is for protecting the nozzle 5 from damage caused by foreign matter. Even when this recess 6 is provided, by providing the nozzle protection plate 2 with a taper 4 as shown in FIG.
This makes it easier to remove foreign matter that has adhered to it in the same way as explained in FIG.
第４図は、第１図、第２図での実施例でのノズル保護プ
レート２の接着方法の一例を示す。第１図、第２図では
、ノズルプレート１とノズル保護プレート２との間に接
着剤に類するものを介在させて接着するが、第４図の場
合はケース３にノズルプレート１を固定し、その上にノ
ズル保護プレート２をノズル保護プレート２の外周部に
接着剤７を盛り上げるようにして固定している。接着剤
７により、用紙がノズル保護プレート２の外周部に接触
した場合でも、その用紙の先端等の鋭利な部分がノズル
保護プレート２を剥がすことがない。FIG. 4 shows an example of a method of bonding the nozzle protection plate 2 in the embodiments shown in FIGS. 1 and 2. FIG. In FIGS. 1 and 2, the nozzle plate 1 and the nozzle protection plate 2 are bonded together using an adhesive, but in the case of FIG. 4, the nozzle plate 1 is fixed to the case 3, A nozzle protection plate 2 is fixed thereon by applying an adhesive 7 to the outer circumference of the nozzle protection plate 2. Because of the adhesive 7, even if the paper comes into contact with the outer circumference of the nozzle protection plate 2, sharp parts such as the leading edge of the paper will not peel off the nozzle protection plate 2.
第５図はケース３にノズルプレート１を固定し、その上
にノズル保護プレート２を固定する。この際ノズルプレ
ート１に突起部８を設ける。これにより前記実施例での
説明よりもノズルプレート１とノズル保護プレート２と
の段差が小さくなるため、ノズル５、凹部６に付着した
異物を除去し易くなる。ノズル保護プレート２と、ノズ
ルプレート１との段差に、テーバ４を備えることでノズ
ル５、凹部６に付着した異物がより除去し易くなる。In FIG. 5, a nozzle plate 1 is fixed to a case 3, and a nozzle protection plate 2 is fixed thereon. At this time, a protrusion 8 is provided on the nozzle plate 1. As a result, the difference in level between the nozzle plate 1 and the nozzle protection plate 2 becomes smaller than that described in the above embodiment, so that foreign matter attached to the nozzle 5 and the recess 6 can be easily removed. By providing the taper 4 at the step between the nozzle protection plate 2 and the nozzle plate 1, foreign matter attached to the nozzle 5 and the recess 6 can be more easily removed.
第６図は、ケース３にノズルプレート１を固定し、その
上にノズル保護プレート２を固定し、ノズルプレート１
に穿設されたノズル５内、及び、ノズル５の周辺部に、
塵、はこり、印字用紙による紙屑等の異物９が付着し目
的とするインク粒が得られなくなった状態を示す。FIG. 6 shows a case 3 in which the nozzle plate 1 is fixed, a nozzle protection plate 2 is fixed on top of the nozzle plate 1, and the nozzle plate 1 is fixed to the case 3.
Inside the nozzle 5 drilled in and around the nozzle 5,
This shows a state in which foreign matter 9 such as dust, sludge, and paper waste from printing paper has adhered, making it impossible to obtain desired ink droplets.
ノズル保護プレート２の材料にはステンレス等の金属を
使用しており、異物９によるノズル保護プレート２への
損傷がなく、このノズル保護プレート２にキャップ１１
を吸着させることでキャップ１１内を着実に負圧にする
ことができ、ノズル５に付着、侵入した異物９を確実に
吸い出すことができ、再びインク粒を安定して得ること
ができる。The material of the nozzle protection plate 2 is made of metal such as stainless steel, so that there is no damage to the nozzle protection plate 2 caused by foreign objects 9, and the cap 11 is attached to the nozzle protection plate 2.
By adsorbing the ink, the inside of the cap 11 can be steadily made negative pressure, and the foreign matter 9 that has adhered to or entered the nozzle 5 can be reliably sucked out, and ink droplets can be stably obtained again.
（発明の効果）
以上説明したように本発明においてはプラスチック材料
に穿設したノズルを避けてノズル周囲を金属プレートで
覆うことにより、印字する際の用紙による擦れ、金属片
、塵、はこり等によるノズルプレート面及びノズルの損
傷を防ぐことができ、インク粒を安定して吐出すること
ができる。(Effects of the Invention) As explained above, in the present invention, by avoiding the nozzle drilled in the plastic material and covering the nozzle periphery with a metal plate, there is no possibility of scratches caused by paper, metal fragments, dust, chips, etc. during printing. It is possible to prevent damage to the nozzle plate surface and nozzles caused by this, and it is possible to stably eject ink droplets.
第１図、 第２図、 第３図、 第４図、 第５図、第
６図は本発明での実施例を示し、第１図、第３図、第４
図、第５図、第６図はノズル近傍の断面図であり、第２
図は第３図をインク粒吐出側よりみた図である。第７図
は従来のインクジェット記録ヘッドを示す図である。
１・・・ノズルプレート
２・・・ノズル保護プレート
３・・・ケース
４・・・テーパ
５・・・ノズル
６・・・ノズル周囲の凹部
７・・・接着剤
８・・・突起部
９・・・異物
１０・・・基板
１１・・・キャップ
以上
出願人 セイコーエプソン株式会社
代理人 弁理士 鈴木喜三部 他−名
第１図
第２図
第３図
第６図1, 2, 3, 4, 5, and 6 show embodiments of the present invention.
Figures 5 and 6 are cross-sectional views of the vicinity of the nozzle.
The figure is a view of FIG. 3 viewed from the ink droplet ejection side. FIG. 7 is a diagram showing a conventional inkjet recording head. 1... Nozzle plate 2... Nozzle protection plate 3... Case 4... Taper 5... Nozzle 6... Concavity around nozzle 7... Adhesive 8... Protrusion 9. ...Foreign object 10...Substrate 11...Cap and above Applicant Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki et al. Figure 1 Figure 2 Figure 3 Figure 6
Claims (1)
向する紙面にインク粒を吐出して記録ドットを形成する
インクジェット記録ヘッドにおいて、ノズルを避けてノ
ズル周囲を金属プレートで覆うことを特徴とするインク
ジェット記録ヘッド。An inkjet recording head in which a plurality of nozzles are drilled in a plastic material and ink droplets are ejected from the nozzles onto an opposing paper surface to form recording dots, and the inkjet recording is characterized by covering the periphery of the nozzles with a metal plate avoiding the nozzles. head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29768690A JPH04169238A (en) | 1990-11-02 | 1990-11-02 | Ink-jet record head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29768690A JPH04169238A (en) | 1990-11-02 | 1990-11-02 | Ink-jet record head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04169238A true JPH04169238A (en) | 1992-06-17 |
Family
ID=17849837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29768690A Pending JPH04169238A (en) | 1990-11-02 | 1990-11-02 | Ink-jet record head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04169238A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134986A (en) * | 1992-10-30 | 1994-05-17 | Brother Ind Ltd | Ink-jet print head |
| JPH07195686A (en) * | 1993-12-28 | 1995-08-01 | Nec Corp | Ink jet print head |
| JPH09216354A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Ink jet printer, head unit and ink jet cartridge |
| JPH09216352A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Liquid emitting apparatus and method |
| JPH09216353A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Liquid emitting apparatus and emission recovering method |
| WO1998055317A1 (en) * | 1997-06-04 | 1998-12-10 | Seiko Epson Corporation | Ink jet recording head and ink jet recorder |
| JPH11157069A (en) * | 1997-11-26 | 1999-06-15 | Seiko Epson Corp | Ink jet recording head |
| JPH11277756A (en) * | 1998-03-30 | 1999-10-12 | Seiko Epson Corp | Ink-jet printing apparatus, printing head and its manufacture |
| JP2000141652A (en) * | 1998-11-12 | 2000-05-23 | Seiko Instruments Inc | Head chip and head unit |
| US6347859B1 (en) | 1999-07-02 | 2002-02-19 | Seiren Co., Ltd. | Injet print head and injet recorder |
| US6435648B1 (en) | 1996-02-13 | 2002-08-20 | Canon Kabushiki Kaisha | Liquid ejection apparatus using air flow to remove mist |
| EP1341670A1 (en) * | 2000-10-20 | 2003-09-10 | Silverbrook Research Pty. Limited | Printed media production |
| JP2003305845A (en) * | 2002-04-16 | 2003-10-28 | Seiko Epson Corp | Inkjet head |
| US6817696B2 (en) * | 2001-03-21 | 2004-11-16 | Olympus Optical Co., Ltd. | Ink jet printer |
| JP2006051746A (en) * | 2004-08-16 | 2006-02-23 | Ricoh Co Ltd | Liquid discharge head and image forming device |
| US7145696B2 (en) | 1998-11-09 | 2006-12-05 | Silverbrook Research Pty Ltd | Print data compression method and printer driver |
| US7201466B2 (en) | 1998-11-09 | 2007-04-10 | Silverbrook Research Pty Ltd | Capping mechanism driven by paper transport |
| US8061808B2 (en) | 2007-10-10 | 2011-11-22 | Canon Kabushiki Kaisha | Recording head |
| JP2017144665A (en) * | 2016-02-18 | 2017-08-24 | パナソニックＩｐマネジメント株式会社 | Inkjet head and inkjet device |
-
1990
- 1990-11-02 JP JP29768690A patent/JPH04169238A/en active Pending
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134986A (en) * | 1992-10-30 | 1994-05-17 | Brother Ind Ltd | Ink-jet print head |
| JPH07195686A (en) * | 1993-12-28 | 1995-08-01 | Nec Corp | Ink jet print head |
| JPH09216353A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Liquid emitting apparatus and emission recovering method |
| US6883895B2 (en) | 1996-02-13 | 2005-04-26 | Canon Kabushiki Kaisha | Liquid ejection apparatus, head unit and ink-jet cartridge |
| JPH09216352A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Liquid emitting apparatus and method |
| US6435648B1 (en) | 1996-02-13 | 2002-08-20 | Canon Kabushiki Kaisha | Liquid ejection apparatus using air flow to remove mist |
| JPH09216354A (en) * | 1996-02-13 | 1997-08-19 | Canon Inc | Ink jet printer, head unit and ink jet cartridge |
| US6270191B1 (en) | 1997-06-04 | 2001-08-07 | Seiko Epson Corporation | Ink jet recording head and ink jet recorder |
| WO1998055317A1 (en) * | 1997-06-04 | 1998-12-10 | Seiko Epson Corporation | Ink jet recording head and ink jet recorder |
| JPH11157069A (en) * | 1997-11-26 | 1999-06-15 | Seiko Epson Corp | Ink jet recording head |
| JPH11277756A (en) * | 1998-03-30 | 1999-10-12 | Seiko Epson Corp | Ink-jet printing apparatus, printing head and its manufacture |
| US8113647B2 (en) | 1998-11-09 | 2012-02-14 | Silverbrook Research Pty Ltd | Inkjet printer with a protective print media input tray |
| US7806500B2 (en) | 1998-11-09 | 2010-10-05 | Silverbrook Research Pty Ltd | Printer with processor having bused decoding and expansion units |
| US7571972B2 (en) | 1998-11-09 | 2009-08-11 | Silverbrook Research Pty Ltd | Printer with a processor having bused decoding and expansion units |
| US7540602B2 (en) | 1998-11-09 | 2009-06-02 | Silverbrook Research Pty Ltd | Inkjet printer with a protective print media input tray |
| US7145696B2 (en) | 1998-11-09 | 2006-12-05 | Silverbrook Research Pty Ltd | Print data compression method and printer driver |
| US7201466B2 (en) | 1998-11-09 | 2007-04-10 | Silverbrook Research Pty Ltd | Capping mechanism driven by paper transport |
| JP2000141652A (en) * | 1998-11-12 | 2000-05-23 | Seiko Instruments Inc | Head chip and head unit |
| US6347859B1 (en) | 1999-07-02 | 2002-02-19 | Seiren Co., Ltd. | Injet print head and injet recorder |
| EP1341670A1 (en) * | 2000-10-20 | 2003-09-10 | Silverbrook Research Pty. Limited | Printed media production |
| EP1341670A4 (en) * | 2000-10-20 | 2006-01-04 | Silverbrook Res Pty Ltd | Printed media production |
| US7303689B2 (en) | 2000-10-20 | 2007-12-04 | Silverbrook Research Pty Ltd | Method of manufacturing a nozzle assembly |
| US7465024B2 (en) | 2000-10-20 | 2008-12-16 | Silverbrook Research Pty Ltd. | Inkjet nozzle assembly incorporating a fluidic seal |
| US7669974B2 (en) | 2000-10-20 | 2010-03-02 | Silverbrook Research Pty Ltd | Nozzle assembly with lever arm and thermal bend actuator |
| US8393715B2 (en) | 2000-10-20 | 2013-03-12 | Zamtec Ltd | Inkjet nozzle assembly having displaceable roof defining ejection port |
| US8091985B2 (en) | 2000-10-20 | 2012-01-10 | Silverbrook Research Pty Ltd | Printhead having ejection nozzles with displaceable fluid chambers |
| US7891769B2 (en) | 2000-10-20 | 2011-02-22 | Kia Silverbrook | Inkjet printhead with nozzle assemblies having raised meniscus-pinning rims |
| US8029099B2 (en) | 2000-10-20 | 2011-10-04 | Silverbrook Research Pty Ltd | Nozzle assembly with thermal bend actuator for displacing nozzle |
| US7175776B2 (en) | 2000-10-20 | 2007-02-13 | Silverbrook Research Pty Ltd | Method of fabricating a micro-electromechanical device with a thermal actuator |
| US6817696B2 (en) * | 2001-03-21 | 2004-11-16 | Olympus Optical Co., Ltd. | Ink jet printer |
| JP2003305845A (en) * | 2002-04-16 | 2003-10-28 | Seiko Epson Corp | Inkjet head |
| JP4527466B2 (en) * | 2004-08-16 | 2010-08-18 | 株式会社リコー | Liquid ejection head and image forming apparatus |
| JP2006051746A (en) * | 2004-08-16 | 2006-02-23 | Ricoh Co Ltd | Liquid discharge head and image forming device |
| US8061808B2 (en) | 2007-10-10 | 2011-11-22 | Canon Kabushiki Kaisha | Recording head |
| JP2017144665A (en) * | 2016-02-18 | 2017-08-24 | パナソニックＩｐマネジメント株式会社 | Inkjet head and inkjet device |
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