JPH0729422B2 - Orifice plate assembly method - Google Patents
Orifice plate assembly methodInfo
- Publication number
- JPH0729422B2 JPH0729422B2 JP19852687A JP19852687A JPH0729422B2 JP H0729422 B2 JPH0729422 B2 JP H0729422B2 JP 19852687 A JP19852687 A JP 19852687A JP 19852687 A JP19852687 A JP 19852687A JP H0729422 B2 JPH0729422 B2 JP H0729422B2
- Authority
- JP
- Japan
- Prior art keywords
- orifice plate
- ink
- air
- discharge ports
- adhesive
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 16
- 239000000853 adhesive Substances 0.000 claims description 30
- 230000001070 adhesive effect Effects 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 24
- 230000005499 meniscus Effects 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000976 ink Substances 0.000 claims 14
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000006089 photosensitive glass Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229940035339 tri-chlor Drugs 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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
- B41J2/16—Production of nozzles
-
- 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
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1623—Manufacturing processes bonding and adhesion
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
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させ被記録物に文
字・画像等を記録するインクジェット記録装置等に用い
られるオフィス板の組立方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for assembling an office plate used in an inkjet recording apparatus or the like for recording characters, images, etc. on a recording object by ejecting ink from minute openings.
従来の技術 複数のオリフィスを位置精度良く対向させることが必要
のマルチノズルインクジェット記録ヘッドとして特開昭
62−39249号公報に示されるものがある。第３図（ａ）
・（ｂ）を参照して説明する。第３図（ａ）は空気流を
用いたマルチノズルヘッドの平面図、同図（ｂ）は断面
図である。ボディ部材16の上に制御電極15が、さらにそ
の上に第１のオリフィス板７が、制御電極15に形成され
ている開口部17と第１のオリフィス板７に形成されてい
るインク吐出口２が同軸となるように合わされた状態で
接着剤14により取り付けられている。第１のオリフィス
板７を覆うように、第２のオリフィス板６が接着剤13に
より取り付けられており、それらの間に形成される空気
層８の第１のオリフィス板７の端面21と第２のオリフィ
ス板６の端面22との間（以下厚さ23と呼ぶ）の寸法は、
スペーサ11、12により規制されている。第１のオリフィ
ス板７と第２のオリフィス板６は、感光性ガラスで作ら
れており絶縁物である。第１のオリフィス板７には、イ
ンクのメニスカスを安定に保持するためとか空気の流れ
を均一にするために、リング状突出部９や突起部10がエ
ッチング技術により形成されており、インク吐出口２を
除く他のエッチングされた部分は空気層８の一部を成し
ている。第１のオリフィス板７の制御電極15側には、不
図示のイク供給源に連絡されたインク室４が形成されて
いる。インク吐出口２に対向して第２のオリフィス板６
には、空気吐出口１が形成されており、また第２のオリ
フィス板６外面には、共通電極５が設けられている。ボ
ディ部材16の外壁18と内壁19との間に空気室３が形成さ
れており、空気室３と空気層８は連通している。制御電
極15は信号源20に、空気室３は空気供給源（図示省略）
に、およびインク室４はインク供給源（図示省略）に接
続されている。2. Description of the Related Art As a multi-nozzle ink jet recording head that requires a plurality of orifices to face each other with high positional accuracy.
There is one disclosed in Japanese Patent Publication No. 62-39249. Fig. 3 (a)
-It demonstrates with reference to (b). FIG. 3 (a) is a plan view of a multi-nozzle head using an air flow, and FIG. 3 (b) is a sectional view. The control electrode 15 is provided on the body member 16, and the first orifice plate 7 is further provided thereon. The opening 17 formed in the control electrode 15 and the ink ejection port 2 formed in the first orifice plate 7 are provided. Are attached by an adhesive 14 in a state where they are aligned so as to be coaxial. The second orifice plate 6 is attached by an adhesive 13 so as to cover the first orifice plate 7, and the end face 21 of the first orifice plate 7 and the second orifice plate 7 of the air layer 8 formed between them are The dimension between the end face 22 of the orifice plate 6 (hereinafter referred to as the thickness 23) is
It is regulated by the spacers 11 and 12. The first orifice plate 7 and the second orifice plate 6 are made of photosensitive glass and are insulators. On the first orifice plate 7, ring-shaped protrusions 9 and protrusions 10 are formed by an etching technique in order to stably hold the ink meniscus and to make the air flow uniform. The other etched portions except 2 form part of the air layer 8. On the control electrode 15 side of the first orifice plate 7, an ink chamber 4 connected to an ink supply source (not shown) is formed. A second orifice plate 6 facing the ink ejection port 2
Is formed with an air discharge port 1, and a common electrode 5 is provided on the outer surface of the second orifice plate 6. The air chamber 3 is formed between the outer wall 18 and the inner wall 19 of the body member 16, and the air chamber 3 and the air layer 8 communicate with each other. The control electrode 15 is the signal source 20, and the air chamber 3 is the air supply source (not shown).
And the ink chamber 4 is connected to an ink supply source (not shown).
空気吐出口１からは、不図示の空気供給源から送られて
くる空気流が空気室３と空気層を通り、インク室４と空
気室３との間に設けられた間隙部でインク吐出口２から
空気吐出口１に向かって空気の圧力を減少させる圧力勾
配を形成しながら、空気吐出口１から流出している。共
通電極５と制御電極15との間に、所定の信号の印加に対
応して電位差が設けられると、インク吐出口２に空気吐
出口１と同軸になるように形成されているインクのメニ
スカスが静電力の作用により引き伸ばされ、空気流によ
り加速を受けながら空気吐出口１よりインクが吐出す
る。From the air discharge port 1, an air flow sent from an air supply source (not shown) passes through the air chamber 3 and the air layer, and the ink discharge port is formed in a gap portion provided between the ink chamber 4 and the air chamber 3. The air flows out from the air discharge port 1 while forming a pressure gradient that decreases the pressure of the air from 2 toward the air discharge port 1. When a potential difference is provided between the common electrode 5 and the control electrode 15 in response to the application of a predetermined signal, the ink meniscus formed in the ink ejection port 2 so as to be coaxial with the air ejection port 1 is generated. The ink is ejected from the air ejection port 1 while being stretched by the action of the electrostatic force and being accelerated by the air flow.
第３図に示されたようなマルチノズルインクジェット記
録ヘッドでは、空気層８の厚さ23の寸法精度が必要であ
る。厚さ23の寸法にバラツキが生じると、共通電極５と
インク吐出口２に形成されるインクのメニスカス間に作
用する静電力や、空気吐出口１より流出する空気による
加速力にバラツキが生じ、インクの吐出特性にバラツキ
が生じてしまう。厚さ23の寸法精度を出すということは
第１のオリフィス板７の端面21と第２のオリフィス板６
の端面22の平行度を良くすることであるが、それにはそ
れぞれのオリフィス板７と６を平らに組立ることが重要
なポイントとなっている。In the multi-nozzle ink jet recording head as shown in FIG. 3, dimensional accuracy of the thickness 23 of the air layer 8 is required. When the thickness 23 varies, the electrostatic force acting between the common electrode 5 and the ink meniscus formed in the ink ejection port 2 and the acceleration force of the air flowing out from the air ejection port 1 also vary. Ink ejection characteristics vary. The dimensional accuracy of the thickness 23 means that the end face 21 of the first orifice plate 7 and the second orifice plate 6 are
In order to improve the parallelism of the end faces 22 of the above, it is an important point to assemble the orifice plates 7 and 6 flat.
第４図は、第３図に示されたインクジェット記録ヘッド
の従来のオリフィス板の組立方法を示し第３図（ａ）の
Ａ−Ａ′線と同じところで断面にした場合の断面図であ
る。ボディ部材16の上に複数個の制御電極15が配置さ
れ、瞬間接着剤により動かないように固定される。制御
電極15は金属であるので反りがあり、ボディ部材16の上
に平らに配置することは難かしく、図中のように凹凸に
なっている。次に接着剤14を塗布し、その上に第１のオ
リフィス板７を置き、開口部17（第３図参照）とインク
吐出口２が同軸となるように位置合わせをする。第１の
オリフィス板７の上に押さえ治具24を置き、平面度の精
度が良い押さえ治具24の押さえ面25により第１のオリフ
ィス板７が押さえられた状態で、接着剤14を硬化させて
いる。FIG. 4 is a sectional view showing a method of assembling the conventional orifice plate of the ink jet recording head shown in FIG. 3 and taken along the same line as the line AA ′ in FIG. 3 (a). A plurality of control electrodes 15 are arranged on the body member 16 and fixed by an instant adhesive so as not to move. Since the control electrode 15 is made of metal, it has a warp, and it is difficult to dispose the control electrode 15 flat on the body member 16, and the control electrode 15 is uneven as shown in the figure. Next, the adhesive 14 is applied, the first orifice plate 7 is placed thereon, and the opening 17 (see FIG. 3) and the ink ejection port 2 are aligned with each other. The pressing jig 24 is placed on the first orifice plate 7, and the adhesive 14 is cured while the first orifice plate 7 is pressed by the pressing surface 25 of the pressing jig 24 having high flatness accuracy. ing.
発明が解決しようとする問題点 第４図に示したような組立方法においては、第１のオリ
フィス板７が感光性ガラスで作られており、厚さが0.2m
m以下と薄く、ヤング率が約８×105kgf/cm2であるので
反り易いために、第１のオリフィス板７が取り付けられ
るときに当たる箇所が制御電極15が凹凸になっており平
らでない場合や、また当たる箇所がボディ部材16の外壁
18の上には設けられておらず、当たる箇所が接着する範
囲の中に適当な間隔に分散して設けられていない場合で
あると、押さえ治具24により第１のオリフィス板７を精
度良く平らに押さえることができず、反りの高さ26が５
〜10μｍと反ったまま接着剤14が硬化してしまうので、
第１のオリフィス板７を平らに組立ることができないと
いう問題があった。Problems to be Solved by the Invention In the assembly method as shown in FIG. 4, the first orifice plate 7 is made of photosensitive glass and has a thickness of 0.2 m.
When the control electrode 15 is uneven and is not flat when the first orifice plate 7 is attached, the thickness is less than m and the Young's modulus is about 8 × 10 5 kgf / cm 2 , so it is easily warped. And the part that hits again is the outer wall of the body member 16.
In the case where it is not provided on 18 and the hitting portions are not provided at appropriate intervals within the bonding range, the first jig 7 is used to accurately position the first orifice plate 7. It cannot be pressed flat and the warp height 26 is 5
Since the adhesive 14 hardens while warping with ~ 10 μm,
There is a problem that the first orifice plate 7 cannot be assembled flat.
第２のオリフィス板６においても第３図を見てわかるよ
うに、取り付けられるときに当たる箇所がスペーサ11と
12のみであり接着する範囲の中に適当な間隔に分散して
いないために、平らに組立ることができないという問題
があった。Also in the second orifice plate 6, as can be seen in FIG.
There was a problem that it could not be assembled flat because it was only 12 and it was not dispersed at an appropriate interval in the bonded area.
第１のオリフィス板７と第２のオリフィス板６を平らに
組立てることができないために、空気層８の厚さ23の寸
法にバラツキが生じ、その結果インクの吐出特性が不均
一にならざるを得なかった。Since it is not possible to assemble the first orifice plate 7 and the second orifice plate 6 flat, the thickness 23 of the air layer 8 varies, and as a result, the ink ejection characteristics become uneven. I didn't get it.
本発明は以上のような難点を解消し、オリフィス板を精
度良く平らに接着させることのできる組立方法を提供す
るものである。The present invention solves the above problems and provides an assembling method capable of accurately and flatly adhering an orifice plate.
問題点を解決するための手段 本発明は、上記課題を解決すために、インクを供給する
インク供給源と、空気流を供給するための空気流供給源
と、複数のインク吐出口を有する絶縁性の第１のオリフ
ィス板と、前記第１のオリフィス板に対向して設けら
れ、前記複数の空気吐出口と同軸上にインクのメニスカ
スが各々形成されるよう前記複数の空気吐出口に対向し
て配された複数の空気吐出口を有する絶縁性の第２のオ
リフィス板と、前記複数のインク吐出口の各々と前記複
数の空気吐出口の各々との対応した間隙部分において急
激な曲がりを生じさせながら前記複数の空気吐出口より
空気流を送出させ、前記複数のインク吐出口から前記複
数の空気吐出口に至る方向に空気の圧力の減少するよう
な圧力勾配の変化する空間を形成する第１の手段と、前
記第２のオリフィス板の前面に形成された共通電極と前
記複数のインク吐出口の各々の内のインクとの間に信号
に応じて選択的に電位差を生じさせる第２の手段とを有
し、第２の手段の電位差による誘引力により前記複数の
インク吐出口に生じているインクのメニスカスを引き伸
ばし、前記第１の手段により圧力勾配の変化する空間に
生じる空気流の加速力を作用させ、前記複数のインク吐
出口内のインクを対応した前記複数の空気吐出口を経て
外方に吐出させるインクジェット記録装置における前記
第１および／または第２のオリフィス板の組立方法であ
って、前記オリフィス板を押さえ治具の平面度の精度が
出された面に、前記オリフィス板の全体を押さえながら
仮止め用接着剤により平に仮止めする仮止め工程と、前
記仮止め工程後、前記押さえ治具に仮止めしたままの状
態で被接着部材に前記オリフィス板を接着剤により接着
する接着工程と、前記接着工程後、溶剤により前記仮止
め用接着剤を溶解して前記押さえ治具を取り除く工程と
を有するオリフィス板の組立方法を提供するものであ
る。Means for Solving the Problems In order to solve the above problems, the present invention provides an ink supply source for supplying ink, an air flow supply source for supplying an air flow, and an insulation having a plurality of ink ejection ports. And a plurality of air discharge ports that are provided so as to face the first orifice plate and that form ink meniscuses coaxially with the plurality of air discharge ports. Insulating second orifice plate having a plurality of air ejection ports arranged in a distributed manner, and a sharp bend is generated in a corresponding gap portion between each of the plurality of ink ejection ports and each of the plurality of air ejection ports. While forming a space in which a pressure gradient changes such that an air flow is sent out from the plurality of air ejection ports to decrease the air pressure in a direction from the plurality of ink ejection ports to the plurality of air ejection ports. One hand A step, and second means for selectively producing a potential difference between the common electrode formed on the front surface of the second orifice plate and the ink in each of the plurality of ink ejection ports according to a signal. The meniscus of the ink generated in the plurality of ink ejection ports is extended by the attraction force due to the potential difference of the second means, and the acceleration force of the air flow generated in the space where the pressure gradient changes by the first means is increased. A method for assembling the first and / or second orifice plate in an ink jet recording apparatus, wherein the first and / or second orifice plates are made to act and eject the ink in the plurality of ink ejection openings to the outside through the corresponding plurality of air ejection openings. Temporary fixing step of temporarily fixing the orifice plate flatly with an adhesive for temporary fixing while pressing the entire orifice plate on the surface where the accuracy of the flatness of the jig is shown; After that, an adhering step of adhering the orifice plate to the adherend member with an adhesive while being temporarily fixed to the pressing jig, and after the adhering step, the temporary fixing adhesive is dissolved with a solvent to The present invention provides a method for assembling an orifice plate, including a step of removing a holding jig.
作 用 本発明によれば、反り易いオリフィス板を押さえ治具に
平らに仮止めしたままの状態で、被接着部材にオリフィ
ス板を接着するため、オリフィス板が取り付けられると
きに当たる箇所（オリフィス板を支える箇所）が凹凸し
ていたり、また当たる箇所が接着する範囲の中に適当な
間隔に分散して設けられていなくとも、オリフィス板を
平らに精度良く組立ることができる。According to the present invention, the orifice plate is adhered to the adherend member while the orifice plate which is easily warped is temporarily temporarily fixed to the jig, so that the orifice plate is attached to the portion (orifice plate The orifice plate can be flatly and accurately assembled even if the supporting portions are uneven or if the contacting portions are not provided at appropriate intervals dispersed in the bonding area.
実施例 以下、本発明の実施例について、図面とともに詳細に説
明する。Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings.
第１図（ａ）は本発明の適用されるインクジェットヘッ
ドの一例を示す平面図、第１図（ｂ）（ｃ）は第１図
（ａ）のＢ−Ｂ′線断面に対応する工程図である。同図
（ｂ）において、まずホットプレート29の上に押さえ治
具26を置き、温度を60℃に上げる。押さえ治具26の押さ
え面27は、20mm平方で１μｍ平面度の精度が出された面
である。温度が60℃に上げられた押さえ面27に仮止め用
接着剤28を塗布する。仮止め用接着剤28は、エレクトロ
ンワックス（宗電子工業（株）製）というパラフィン系
の接着剤で、約34℃で軟らかくなりはじめ約48℃以上の
温度では液体状となり、またトリクロルエタン、トリク
ロルエチレン等の溶剤により溶解可能なものである。次
に第１のオリフィス板７を端面21側を押さえ面27に向け
て置き、その上に弾性部材31、さらにその上に重し30を
置いて第１のオリフィス板７を押さえる。弾性部材31
は、スポンジ、ゴム、布地等の弾性のあるものであり、
第１のオリフィス板７の全体を万遍無く押さえるため
に、第１のオリフィス板７と重し30の間に入れられる。
重し30は、第１のオリフィス板７を平らに押さえること
ができる重さのものが用いられる。第１のオリフィス板
７の全体を押さえると、端面21と押さえ面27の間にある
液体状の仮止め用接着剤28の大部分が横に押し出され、
端面21が押さえ面27に沿うので、第１のオリフィス板７
が平らな状態となる。温度が下がると仮止め用接着剤28
は固体状となるので、第１のオリフィス板７の全体を押
さえながら温度を下げて、押さえ面27に第１のオリフィ
ス板７を仮止め用接着剤28により平らに仮止めする。FIG. 1A is a plan view showing an example of an inkjet head to which the present invention is applied, and FIGS. 1B and 1C are process diagrams corresponding to a section taken along the line BB ′ of FIG. 1A. Is. In the same figure (b), first, the pressing jig 26 is placed on the hot plate 29, and the temperature is raised to 60 ° C. The pressing surface 27 of the pressing jig 26 is a surface having a squareness of 20 μm and an accuracy of 1 μm flatness. The adhesive 28 for temporary fixing is applied to the pressing surface 27 whose temperature has been raised to 60 ° C. The temporary fixing adhesive 28 is an electron wax (manufactured by So Denshi Kogyo Co., Ltd.), which is a paraffin adhesive that begins to soften at about 34 ° C and becomes liquid at a temperature of about 48 ° C or higher, and also trichloroethane, trichlor. It can be dissolved in a solvent such as ethylene. Next, the first orifice plate 7 is placed with the end face 21 side facing the pressing surface 27, the elastic member 31 is placed thereon, and the weight 30 is placed on the elastic member 31 to press the first orifice plate 7. Elastic member 31
Is an elastic material such as sponge, rubber, cloth,
In order to uniformly press the entire first orifice plate 7, it is inserted between the first orifice plate 7 and the weight 30.
The weight 30 is of a weight that can hold the first orifice plate 7 flat. When the entire first orifice plate 7 is pressed, most of the liquid temporary fixing adhesive 28 between the end surface 21 and the pressing surface 27 is pushed out laterally,
Since the end surface 21 extends along the pressing surface 27, the first orifice plate 7
Becomes flat. Temporary adhesive 28 when the temperature drops
Becomes solid, the temperature is lowered while pressing the entire first orifice plate 7, and the first orifice plate 7 is temporarily fixed to the pressing surface 27 by the temporary fixing adhesive 28.
つぎに第１図（ｃ）において、ボディ部材16の上に複数
個の制御電極15を瞬間接着剤により固定してから、第１
のオリフィス板７を接着させる範囲に接着剤14を塗布す
る。接着剤14は、室温硬化型で硬化中の収縮が小さいも
のであり、ここではエポキシ樹脂接着剤を用いている。
第１のオリフィス板７を押さえ治具26に仮止めしたまま
の状態で接着剤14の上に置き、第１図（ａ）に示した位
置合わせ用開口部32から覗いて、開口部17（第３図参
照）とインク吐出口２が同軸となるように位置合わせを
し、仮止め用接着剤28が軟らかくならない室温で接着剤
14を硬化させる。位置合わせ用開口部32は、第１のオリ
フィス板７を仮止めするのに押さえたときに、第１のオ
リフィス板７に反りを生じさせないために小さな開口と
する。被接着部材のボディ部材16と制御電極15に第１の
オリフィス板７を接着した後、トリクロルエチレンの溶
剤による超音波洗浄により仮止め用接着剤28を溶解し、
押さえ治具26を取り除く。Next, referring to FIG. 1 (c), a plurality of control electrodes 15 are fixed on the body member 16 with an instant adhesive, and then the first
The adhesive agent 14 is applied to the area where the orifice plate 7 of FIG. The adhesive 14 is a room temperature curable type and has a small shrinkage during curing, and an epoxy resin adhesive is used here.
The first orifice plate 7 is placed on the adhesive 14 in a state where it is temporarily fixed to the holding jig 26, and it is seen through the alignment opening 32 shown in FIG. (See FIG. 3) and the ink ejection port 2 are aligned so that they are coaxial, and the adhesive 28 for temporary fixing does not become soft at room temperature.
Cure 14 The positioning opening 32 is a small opening so that the first orifice plate 7 is not warped when pressed to temporarily fix the first orifice plate 7. After adhering the first orifice plate 7 to the body member 16 of the adherend member and the control electrode 15, the temporary fixing adhesive 28 is dissolved by ultrasonic cleaning with a solvent of trichloroethylene,
Remove the holding jig 26.
本実施例によれば、第１のオリフィス板７を押さえ治具
26の押さえ面27に平らに仮止めしたままの状態で、被接
着部材のボディ部材16と制御電極15に接着するため、押
さえ面27の20mm平方で１μｍの平面度に近い精度で、第
１のオリフィス板７を平らに組立てることができた。反
りの高さ26（第４図参照）でいうと、２μｍ以内の良い
精度で組立てることができた。According to this embodiment, the jig for holding the first orifice plate 7
In order to bond the body member 16 of the adherend member and the control electrode 15 in a state of being temporarily fixed to the pressing surface 27 of 26, the accuracy of the first surface is close to the flatness of 1 μm in 20 mm square of the pressing surface 27. It was possible to assemble the orifice plate 7 of No. 1 flat. As for the warp height 26 (see FIG. 4), the assembly could be done with good accuracy within 2 μm.
次に、第２の実施例について説明する。第２図は第２の
オリフィス板６の組立方法を示し、（ａ）は平面図、
（ｂ）は断面図である。第２図は、前記第１の実施例と
同様の手順により、押さえ治具34の平面度の精度が出さ
れた押さえ面35に、第２のオリフィス板６を仮止め用接
着剤28により平らに仮止めされたところである。第２の
オリフィス板６は、表端面36を平らに仮止めした場合、
端面22の平面度が20mm平方で１μｍ以内となるように精
度が出されている。押さえ治具34に仮止めしたままの状
態で（以下第３図も参照）被接着部材の第１のオリフィ
ス板７とボディ部材16および制御電極15に接着剤13によ
り第２のオリフィス板６を接着する。このとき、第１の
オリフィス板７と第２のオリフィス板６の間にはスペー
サ11と12が入れられ、また位置合わせ用開口部33から覗
いて、空気吐出口１とインク吐出口２が同軸となるよう
に位置合わせをしている。次にトリクロルエチレンの溶
剤による超音波洗浄により仮止め用接着剤28を溶解し、
押さえ治具34を取り除く。Next, a second embodiment will be described. FIG. 2 shows an assembling method of the second orifice plate 6, (a) is a plan view,
(B) is a sectional view. FIG. 2 shows that the second orifice plate 6 is flattened by the adhesive 28 for temporary fixing on the pressing surface 35 of the pressing jig 34 where the flatness of the pressing jig 34 has been obtained by the same procedure as in the first embodiment. It has been temporarily stopped by. If the front end surface 36 is temporarily fixed to the second orifice plate 6 flatly,
The precision is set so that the flatness of the end face 22 is within 1 μm in a square of 20 mm. While being temporarily fixed to the pressing jig 34 (see also FIG. 3 below), the second orifice plate 6 is attached to the first orifice plate 7 of the adherend member, the body member 16 and the control electrode 15 with the adhesive 13. To glue. At this time, spacers 11 and 12 are inserted between the first orifice plate 7 and the second orifice plate 6, and the air ejection port 1 and the ink ejection port 2 are coaxial with each other as seen through the alignment opening 33. It is aligned so that Next, the temporary fixing adhesive 28 is dissolved by ultrasonic cleaning with a solvent of trichlorethylene,
Remove the holding jig 34.
本実施例によれば、第２のオリフィス板６を平らに組立
てることができ、反りの高さでいうと、２μｍ以内の良
い精度で組立てることができた。According to this embodiment, the second orifice plate 6 can be assembled flat, and the warp height can be assembled with good accuracy within 2 μm.
発明の効果 以上の説明より明らかなように本発明によればオリフィ
ス板を平らに組立てることができるので、次のような効
果が得られる。EFFECTS OF THE INVENTION As is clear from the above description, according to the present invention, the orifice plate can be flatly assembled, so that the following effects can be obtained.
（１）空気層８の厚さ23の寸法のバラツキが４μｍ以内
に押さえられ、マルチノズルにおけるインクの吐出特性
のバラツキを小さくすることができた。(1) The variation in the dimension of the thickness 23 of the air layer 8 was suppressed within 4 μm, and the variation in the ink ejection characteristics in the multi-nozzle could be reduced.
（２）オリフィス板を押さえ治具に平らに仮止めしたま
まの状態で接着するため、オリフィス板が取り付けられ
るときに当たる箇所が凹凸していたり、また当たる箇所
が接着する範囲の中に適当な間隔に分散して設けられて
いなくとも良いため、その分制約が少なくなりインクジ
ェットヘッドの構造の設計の自由度が広がる。(2) Since the orifice plate is bonded to the jig in a state where it is temporarily temporarily fixed, the contact part is uneven when the orifice plate is attached, and the contact part has an appropriate interval within the bonded range. Since it is not necessary to disperse the ink jet heads, the restrictions are reduced and the degree of freedom in designing the structure of the inkjet head is expanded.
（３）オリフィス板を押さえ治具に平らに仮止めしたま
まの状態で、マルチノズルにおける制御電極15の開口部
17とインク吐出口２または、インク吐出口２と空気吐出
口１の位置合わせを行なうので、作業が容易になりかつ
精度良く合わせることができる。(3) The opening of the control electrode 15 in the multi-nozzle with the orifice plate held flat and temporarily fixed to the jig.
Since the position of 17 and the ink ejection port 2 or the position of the ink ejection port 2 and the air ejection port 1 are aligned, the work is facilitated and the alignment can be performed accurately.
第１図は本発明の第１実施例のオリフィス板の組立方法
の工程を示し、（ａ）は平面図、（ｂ）（ｃ）は第１図
（ａ）のＢ−Ｂ′矢視断面図、第２図は本発明の第２実
施例の組立方法の工程図を示し、（ａ）は平面図、
（ｂ）は断面図、第３図は本発明の適用されるインクジ
ェット記録ヘッドの一例を示し、（ａ）は平面図、
（ｂ）は（ａ）のＡ−Ａ′線断面図、第４図は第３図の
インクジェット記録ヘッドの従来のオリフィス板の組立
方法を示し、第３図（ａ）のＡ−Ａ′線断面図である。 ６……第２のオリフィス板、７……第１のオリフィス
板、13,14……接着剤、26,34……押さえ治具、27,35…
…押さえ面、28……仮止め用接着剤。FIG. 1 shows the steps of the method for assembling the orifice plate according to the first embodiment of the present invention, (a) is a plan view, (b) and (c) are sectional views taken along the line BB ′ of FIG. 1 (a). FIGS. 2A and 2B are process diagrams of the assembling method according to the second embodiment of the present invention, in which FIG.
(B) is a sectional view, FIG. 3 shows an example of an inkjet recording head to which the present invention is applied, (a) is a plan view,
(B) is a sectional view taken along the line AA 'in (a), FIG. 4 shows a conventional method for assembling the orifice plate of the ink jet recording head shown in FIG. 3, and FIG. FIG. 6 ... Second orifice plate, 7 ... First orifice plate, 13,14 ... Adhesive, 26,34 ... Holding jig, 27,35 ...
… Pressing surface, 28 …… Temporary adhesive.
Claims (1)
を供給するための空気流供給源と、複数のインク吐出口
を有する絶縁性の第１のオリフィス板と、前記第１のオ
リフィス板に対向して設けられ、前記複数の空気吐出口
と同軸上にインクのメニスカスが各々形成されるよう前
記複数の空気吐出口に対向して配された複数の空気吐出
口を有する絶縁性の第２のオリフィス板と、前記複数の
インク吐出口の各々と前記複数の空気吐出口の各々との
対応した間隙部分において急激な曲がりを生じさせなが
ら前記複数の空気吐出口より空気流を送出させ、前記複
数のインク吐出口から前記複数の空気吐出口に至る方向
に空気の圧力の減少するような圧力勾配の変化する空間
を形成する第１の手段と、前記第２のオリフィス板の前
面に形成された共通電極と前記複数のインク吐出口の各
々の内のインクとの間に信号に応じて選択的に電位差を
生じさせる第２の手段とを有し、第２の手段の電位差に
よる誘引力により前記複数のインク吐出口に生じている
インクのメニスカスを引き伸ばし、前記第１の手段によ
り圧力勾配の変化する空間に生じる空気流の加速力を作
用させ、前記複数のインク吐出口内のインクを対応した
前記複数の空気吐出口を経て外方に吐出させるインクジ
ェット記録装置における前記第１および／または第２の
オリフィス板の組立方法であって、前記オリフィス板を
押さえ治具の平面度の精度が出された面に、前記オリフ
ィス板の全体を押さえながら仮止め用接着剤により平に
仮止めする仮止め工程と、前記仮止め工程後、前記押さ
え治具に仮止めしたままの状態で被接着部材に前記オリ
フィス板を接着剤により接着する接着工程と、前記接着
工程後、溶剤により前記仮止め用接着剤を溶解して前記
押さえ治具を取り除く工程とを有するオリフィス板の組
立方法。1. An ink supply source for supplying ink, an air flow supply source for supplying an air flow, an insulating first orifice plate having a plurality of ink discharge ports, and the first orifice plate. And an insulating first member having a plurality of air discharge ports arranged facing the plurality of air discharge ports so that ink meniscuses are formed coaxially with the plurality of air discharge ports. The second orifice plate, and the air flow is sent out from the plurality of air discharge ports while causing a sharp bend in the corresponding gap portion between each of the plurality of ink discharge ports and each of the plurality of air discharge ports, First means for forming a space in which the pressure gradient changes such that the pressure of air decreases in the direction from the plurality of ink ejection openings to the plurality of air ejection openings, and the first means is formed on the front surface of the second orifice plate. Was done Second means for selectively producing a potential difference between the electrode and the ink in each of the plurality of ink ejection openings according to a signal, and the plurality of means are attracted by the potential difference of the second means. The meniscus of the ink generated in the ink discharge port of the above is extended, and the acceleration force of the air flow generated in the space where the pressure gradient changes by the first means is applied, and the ink in the plurality of ink discharge ports corresponds to the plurality of inks. A method of assembling the first and / or second orifice plate in an ink jet recording apparatus for ejecting outward through the air ejection port, wherein the surface of the jig that holds the orifice plate with high accuracy of flatness is provided. In addition, a temporary fixing step of temporarily fixing the orifice plate flatly with an adhesive for temporary fixing while pressing the entire orifice plate, and a state of being temporarily fixed to the pressing jig after the temporary fixing step. It said orifice plate wear member and bonding step of bonding by an adhesive, after the bonding step, the assembly method of the orifice plate and a step of removing the pressing jig by dissolving the temporary fixing adhesive by solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19852687A JPH0729422B2 (en) | 1987-08-07 | 1987-08-07 | Orifice plate assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19852687A JPH0729422B2 (en) | 1987-08-07 | 1987-08-07 | Orifice plate assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6442247A JPS6442247A (en) | 1989-02-14 |
| JPH0729422B2 true JPH0729422B2 (en) | 1995-04-05 |
Family
ID=16392608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19852687A Expired - Lifetime JPH0729422B2 (en) | 1987-08-07 | 1987-08-07 | Orifice plate assembly method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729422B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2833903B2 (en) * | 1992-02-14 | 1998-12-09 | 京セラ株式会社 | Imaging device |
| JP2001096802A (en) * | 1999-10-04 | 2001-04-10 | Canon Inc | Method of manufacturing LED array head |
-
1987
- 1987-08-07 JP JP19852687A patent/JPH0729422B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6442247A (en) | 1989-02-14 |
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