JPH0596726A - Inkjet recording device - Google Patents
Inkjet recording deviceInfo
- Publication number
- JPH0596726A JPH0596726A JP25932291A JP25932291A JPH0596726A JP H0596726 A JPH0596726 A JP H0596726A JP 25932291 A JP25932291 A JP 25932291A JP 25932291 A JP25932291 A JP 25932291A JP H0596726 A JPH0596726 A JP H0596726A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- head substrate
- thin plate
- adhesive
- flow path
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000002950 deficient Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
(57)【要約】
【目的】 インクオリフィス部とインク吐出用薄板との
接着面に接着剤溜りを設けて、インク吐出用穴、インク
オリフィス部の穴を接着剤によりふさがれてしまうのを
防ぐ、又はインクオリフィス部を形成した時に発生する
バリによってヘツド基板とインク吐出用薄板の接着不良
の発生を防ぐ。
【構成】 ヘッド基板とインク吐出用薄板接着面側のイ
ンクオリフィス部の外周に断面積２０（μｍ2 ）以上５
００（μｍ2 ）以下の前記ヘッド基板製造過程時に発生
するバリを回避する構造を兼ねた接着剤溜り用の間隙を
設る。
(57) [Abstract] [Purpose] An adhesive reservoir is provided on the bonding surface between the ink orifice and the thin plate for ink ejection to prevent the hole for ink ejection and the hole for the ink orifice from being blocked by the adhesive. Or, it is possible to prevent occurrence of defective adhesion between the head substrate and the ink discharge thin plate due to burrs generated when the ink orifice portion is formed. [Structure] A cross-sectional area of 20 (μm 2 ) or more on the outer circumference of the ink orifice portion on the adhesion surface side of the head substrate and the ink discharge thin plate
A gap for accumulating an adhesive having a size of 00 (μm 2 ) or less, which also serves as a structure for avoiding burrs generated during the manufacturing process of the head substrate, is provided.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、インク滴を飛翔させて
記録媒体上に画像を形成するインクジェット記録装置の
構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an ink jet recording apparatus for ejecting ink droplets to form an image on a recording medium.
【０００２】[0002]
【従来の技術】従来の同一構造のインクジェット記録装
置においては、図３（ａ）、（ｂ）に示すようにヘッド
基板１の流路の断面形状においてインク吐出用薄板１０
と接着剤を用いて接合されるインクノズル面側の形状は
間隙がなく鋭利な角となっていた。2. Description of the Related Art In a conventional ink jet recording apparatus having the same structure, as shown in FIGS. 3 (a) and 3 (b), the thin plate 10 for ejecting ink has a sectional shape of a flow path of a head substrate 1.
The shape on the ink nozzle surface side, which is joined using an adhesive, has a sharp angle with no gap.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の方法で
はヘッド基板１とインク吐出用薄板１０を接着剤を用い
て接合した場合に余剰接着剤１４がインクノズル部に進
入してしまいノズル穴の穴径が一定しない。またヘッド
基板１の製造過程において発生するノズル穴部のバリが
インク吐出用薄板１０を接着剤を用いて接合する場合に
接合の妨げになりインク吐出用薄板１０がヘッド基板１
に密着性良く接合できないため、インクの飛行特性に大
きく影響するノズル穴の形状を不安定にする。つまり図
３（ａ）に示すようにヘッド基板１とインク吐出用薄板
１０を接合した後のノズル穴部８の断面形状は余剰接着
剤のはみ出しによって穴形状が変動的になる。または、
図３（ｂ）に示すようにヘッド基板１とインク吐出用薄
板１０を接合するとヘッド基板１に発生したバリ７によ
ってインク吐出用薄板１０がヘッド基板１に密着性良く
接合できない。However, in the conventional method, when the head substrate 1 and the thin plate 10 for ejecting ink are joined by using an adhesive, the excess adhesive 14 enters the ink nozzle portion and the nozzle hole Hole diameter is not constant. In addition, burrs in the nozzle holes generated during the manufacturing process of the head substrate 1 hinder the joining when the thin plate 10 for ejecting ink is joined using an adhesive, and the thin plate 10 for ejecting ink is the head substrate 1.
Since it is not possible to bond the ink with good adhesion, the shape of the nozzle hole, which greatly affects the flight characteristics of the ink, becomes unstable. That is, as shown in FIG. 3A, the cross-sectional shape of the nozzle hole portion 8 after the head substrate 1 and the thin plate 10 for ink ejection are joined, the hole shape becomes variable due to the excess adhesive protruding. Or
As shown in FIG. 3B, when the head substrate 1 and the ink discharge thin plate 10 are bonded, the ink discharge thin plate 10 cannot be bonded to the head substrate 1 with good adhesion due to the burr 7 generated on the head substrate 1.
【０００４】本発明は、このような問題に鑑みてなされ
たものであり、その目的とするところは安定した印字品
質の得られるインクジェット記録装置を提供する事にあ
る。The present invention has been made in view of the above problems, and an object thereof is to provide an ink jet recording apparatus which can obtain stable printing quality.
【０００５】[0005]
【課題を解決するための手段】本発明のインクジェット
記録装置は、 （１） 流路と流路穴を有するヘッド基板と、インク吐
出用穴を有するプレートを貼り合わせて形成したインク
ジェット記録装置において、前記流路と流路穴を有する
ヘッド基板のインク吐出用穴を有するプレートとの貼り
合わせ面側の該流路穴外周に接着剤溜り形状を有するこ
とを特徴とする。 （２） 前記接着剤溜り形状の断面形状において、前記
流路穴の外周に断面積２０（μｍ2 ）以上５００（μｍ
2 ）以下の間隙を設けた事を特徴とする。The ink jet recording apparatus of the present invention comprises: (1) an ink jet recording apparatus formed by adhering a head substrate having channels and channel holes to a plate having ink ejection holes, It is characterized in that it has an adhesive reservoir shape on the outer periphery of the flow path hole on the bonding surface side of the flow path and the head substrate having the flow path hole and the plate having the ink discharge holes. (2) In the cross-sectional shape of the adhesive reservoir shape, a cross-sectional area of 20 (μm 2 ) or more and 500 (μm) on the outer periphery of the flow path hole.
2 ) It is characterized by the following gaps.
【０００６】[0006]
【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。Embodiments of the present invention will be described below in detail with reference to the illustrated embodiments.
【０００７】図１（ａ）、図１（ｂ）は本発明を実施し
たインクジェット記録装置のヘッド基板１における流路
構造の概観図を示す。ポリサルフォンまたはポリカーボ
ネートなどの高分子材料を基材とし、それを射出成形す
ることにより製造されたヘッド基板１の片面は圧力室２
からなる連続する流路溝が形成されており、もう片面は
インク準備室４、インク供給口３、インクオリフィス部
６、間隙７より形成されている。そしてヘッド基板１の
両側に、高分子材よりなるインク密閉用薄板９、ＳＵ
Ｓ、ニッケルプレート、高分子フィルム等にインク吐出
穴を加工したインク吐出用薄板１０を接着剤により接合
することによりインクの流路は密閉されインク滴を吐出
するインク流路が形成される。インクは、圧力室２の位
置においてインク密閉用薄板９に接着された図示されて
いない圧電素子などのアクチュエーターの力によりイン
ク準備室４、インク供給口３を通りインク連絡流路５、
インクオリフィス部６を通ってインク吐出用薄板１０に
形成されているノズル穴８より吐出される。ここで言う
接着剤とは一般的な接着剤に限らず、ヘッド基板１とイ
ンク密閉用薄板９、インク吐出用薄板１０が同材質同士
もしくは溶解係数が近い場合には有機溶剤による接着で
もよい。1 (a) and 1 (b) are schematic views of a flow path structure in a head substrate 1 of an ink jet recording apparatus embodying the present invention. One side of the head substrate 1 manufactured by injection-molding a polymer material such as polysulfone or polycarbonate as a base material is a pressure chamber 2
Is formed, and the other surface is formed by the ink preparation chamber 4, the ink supply port 3, the ink orifice portion 6, and the gap 7. On both sides of the head substrate 1, a thin ink sealing plate 9 made of a polymer material, SU
By bonding the ink discharge thin plate 10 in which the ink discharge holes are formed on S, a nickel plate, a polymer film, or the like with an adhesive, the ink flow path is sealed and an ink flow path for discharging ink drops is formed. The ink passes through the ink preparation chamber 4, the ink supply port 3, and the ink communication channel 5 by the force of an actuator such as a piezoelectric element (not shown) adhered to the ink sealing thin plate 9 at the position of the pressure chamber 2.
The ink is ejected from the nozzle holes 8 formed in the ink ejection thin plate 10 through the ink orifice portion 6. The adhesive referred to here is not limited to a general adhesive, and may be an organic solvent if the head substrate 1, the ink sealing thin plate 9 and the ink discharging thin plate 10 are made of the same material or have similar solubility coefficients.
【０００８】この実施例では、ヘッド基板１のインクオ
リフィス部６先端の形状は図２（ａ）、（ｂ）に示すよ
うにインク吐出用薄板１０と接合される面に断面積幅５
μｍ、深さ５μｍの余剰接着剤１４溜りおよびヘッド基
板１の製造過程で発生したバリ７を回避する間隙１３が
設けてある。この場合間隙１３の断面積は２５μｍ2に
なる。これによりヘッド基板１とインク吐出用薄板１０
を接合した際の余剰接着剤１４は間隙１３に収まり図２
（ｂ）に示すようにヘッド基板１とインク吐出用薄板１
０が接合された後のインクオリフィス部６先端の断面形
状は安定した形状が得られる。尚かつヘッド基板１の製
造過程において発生するバリ７を回避でき、バリ７によ
る図３（ｂ）に示すようなインク吐出用薄板１０の接合
不良を避けることができる。In this embodiment, the shape of the tip of the ink orifice portion 6 of the head substrate 1 has a cross-sectional area width 5 on the surface to be joined to the ink ejection thin plate 10 as shown in FIGS.
A gap 13 is provided to avoid a surplus adhesive 14 pool having a depth of 5 μm and a depth of 5 μm and burrs 7 generated during the manufacturing process of the head substrate 1. In this case, the cross-sectional area of the gap 13 is 25 μm 2 . As a result, the head substrate 1 and the ink discharge thin plate 10
Excess adhesive 14 when joining the
As shown in (b), the head substrate 1 and the ink discharge thin plate 1
A stable cross-sectional shape of the tip of the ink orifice portion 6 after 0 is joined can be obtained. In addition, it is possible to avoid the burr 7 generated in the manufacturing process of the head substrate 1, and to avoid the bonding failure of the thin plate 10 for ink ejection as shown in FIG.
【０００９】図４（ａ）、（ｂ）に本発明による第２の
実施例によるインクオリフィス部６先端の断面形状を示
す。この例では間隙１３はＣ１５μｍの面が取られた形
状となっている。この場合間隙１３の断面積は約１２０
μｍ2 になる。この例でも余剰接着剤１４は図４（ｂ）
に示すように間隙１３に収まっている。FIGS. 4A and 4B show the sectional shape of the tip of the ink orifice portion 6 according to the second embodiment of the present invention. In this example, the gap 13 has a shape with a C15 μm surface. In this case, the cross-sectional area of the gap 13 is about 120.
It becomes μm 2 . In this example as well, the surplus adhesive 14 is shown in FIG.
As shown in FIG.
【００１０】尚、余剰接着剤１４を捕捉するための間隙
１３の必要断面積は、接着剤の種類及び量に応じて可変
であり、一般的に接着剤の粘度が高い場合や塗布量の多
い場合及び溶剤溶着用の有機溶剤の溶解力が高い場合や
塗布量の多い場合には間隙１３の断面積を大きくした方
が良い傾向にある。The required cross-sectional area of the gap 13 for capturing the surplus adhesive 14 is variable depending on the type and amount of the adhesive, and generally when the viscosity of the adhesive is high or the amount of application is large. In the case, or when the dissolving power of the organic solvent for solvent welding is high or when the coating amount is large, it tends to be better to increase the cross-sectional area of the gap 13.
【００１１】[0011]
【発明の効果】以上説明したように、本発明によればヘ
ッド基板の流路の断面形状において薄板と接合されるイ
ンクオリフィス先端部の周囲に断面積２０（μｍ2 ）以
上５００（μｍ2 ）以下の余剰接着剤溜り兼バリ逃げ用
の間隙を設けたことによりヘッド基板のインク流動、特
にインクの飛行特性に大きな影響を与えるインクノズル
穴部の断面形状を安定的に所望の形状として得ることが
でき、目的とする安定した印字品質の得られるインクジ
ェット記録装置を提供することができる。As described above, according to the present invention, in the cross-sectional shape of the flow path of the head substrate, the cross-sectional area is 20 (μm 2 ) or more and 500 (μm 2 ) or more around the tip of the ink orifice joined to the thin plate. The cross-sectional shape of the ink nozzle hole that has a large effect on the ink flow of the head substrate, especially the ink flight characteristics, can be stably obtained as the desired shape by providing the following gap for excess adhesive reservoir and burr escape. Therefore, it is possible to provide an inkjet recording apparatus that can obtain the desired stable printing quality.
【図１】（ａ）は、本発明のインクジェットヘッド基板
の流路構造を示す平面図。（ｂ）は、本発明のヘッド基
板の両面に薄板を接合した後の流路構造を示す図１
（ａ）の断面図。FIG. 1A is a plan view showing a flow channel structure of an inkjet head substrate of the present invention. FIG. 1B is a diagram showing a flow channel structure after bonding thin plates to both surfaces of the head substrate of the present invention.
Sectional drawing of (a).
【図２】（ａ）は、本発明のヘッド基板製造過程におけ
る発生したバリを回避するための間隙の説明図。（ｂ）
は、本発明の余剰接着剤溜りの間隙の説明図。FIG. 2A is an explanatory diagram of a gap for avoiding burrs generated in the head substrate manufacturing process of the present invention. (B)
[FIG. 3] is an explanatory view of a gap of a surplus adhesive reservoir of the present invention.
【図３】（ａ）は、従来のヘッド基板のノズル穴部の余
剰接着剤の説明図。（ｂ）は、従来のヘッド基板のノズ
ル穴部に発生したバリ部に薄板を接合した場合の説明
図。FIG. 3A is an explanatory diagram of a surplus adhesive in a nozzle hole portion of a conventional head substrate. FIG. 6B is an explanatory view of a case where a thin plate is joined to a burr portion generated in a nozzle hole portion of a conventional head substrate.
【図４】（ａ）は、本発明第２の実施例によるインクオ
リフィス部の本発明のヘッド基板製造過程における発生
したバリを回避するための間隙の説明図。（ｂ）は、本
発明第２の実施例による本発明の余剰接着剤溜りの説明
図。FIG. 4A is an explanatory diagram of a gap for avoiding a burr generated in a head substrate manufacturing process of the present invention in an ink orifice portion according to a second embodiment of the present invention. (B) is explanatory drawing of the surplus adhesive agent reservoir | storage of this invention by the 2nd Example of this invention.
１ ヘッド基板 ２ 圧力室 ３ インク供給口 ４ インク準備室 ５ インク連絡流路 ６ インクオリフィス部 ７ バリ ８ ノズル穴 ９ インク密閉用薄板 １０ インク吐出用薄板 １１ 一般面 １２ 接合面 １３ 間隙 １４ 余剰接着剤 1 Head Substrate 2 Pressure Chamber 3 Ink Supply Port 4 Ink Preparation Chamber 5 Ink Communication Channel 6 Ink Orifice Part 7 Burr 8 Nozzle Hole 9 Ink Sealing Thin Plate 10 Ink Discharging Thin Plate 11 General Surface 12 Bonding Surface 13 Gap 14 Surplus Adhesive
Claims (2)
ク吐出用穴を有するプレートを貼り合わせて形成したイ
ンクジェット記録装置において、前記流路と流路穴を有
するヘッド基板のインク吐出用穴を有するプレートとの
貼り合わせ面側の該流路穴外周に接着剤溜り形状を有す
ることを特徴とするインクジェット記録装置。1. An ink jet recording apparatus formed by bonding a head substrate having a flow path and a flow path hole and a plate having an ink discharge hole to a head substrate having the flow path and the flow path hole for ink discharge. An ink jet recording apparatus, characterized in that it has an adhesive reservoir shape on the outer periphery of the flow path hole on the bonding surface side with a plate having holes.
前記流路穴の外周に断面積２０（μｍ2 ）以上５００
（μｍ2 ）以下の間隙を設けた事を特徴とする請求項１
記載のインクジェット記録装置。2. In the cross-sectional shape of the adhesive reservoir shape,
Cross-sectional area of 20 (μm 2 ) or more on the outer periphery of the flow path hole 500
2. A gap of (μm 2 ) or less is provided.
The inkjet recording device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25932291A JPH0596726A (en) | 1991-10-07 | 1991-10-07 | Inkjet recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25932291A JPH0596726A (en) | 1991-10-07 | 1991-10-07 | Inkjet recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0596726A true JPH0596726A (en) | 1993-04-20 |
Family
ID=17332477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25932291A Pending JPH0596726A (en) | 1991-10-07 | 1991-10-07 | Inkjet recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0596726A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0694399A1 (en) * | 1994-07-18 | 1996-01-31 | Hewlett-Packard Company | Disruption of polymer surface of a nozzle member to inhibit adhesive flow |
| JP2000263778A (en) * | 1999-03-16 | 2000-09-26 | Seiko Epson Corp | Actuator device, ink jet recording head, and ink jet recording device |
| US7354138B2 (en) | 2004-07-16 | 2008-04-08 | Fujifilm Corporation | Liquid droplet discharge head, manufacturing method thereof, and image forming apparatus |
| JP2012218194A (en) * | 2011-04-05 | 2012-11-12 | Seiko Epson Corp | Liquid ejection head, and liquid ejector |
| JP2014148096A (en) * | 2013-02-01 | 2014-08-21 | Seiko Epson Corp | Liquid jet head, method of manufacturing the same, and liquid jet apparatus |
-
1991
- 1991-10-07 JP JP25932291A patent/JPH0596726A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0694399A1 (en) * | 1994-07-18 | 1996-01-31 | Hewlett-Packard Company | Disruption of polymer surface of a nozzle member to inhibit adhesive flow |
| JP2000263778A (en) * | 1999-03-16 | 2000-09-26 | Seiko Epson Corp | Actuator device, ink jet recording head, and ink jet recording device |
| US7354138B2 (en) | 2004-07-16 | 2008-04-08 | Fujifilm Corporation | Liquid droplet discharge head, manufacturing method thereof, and image forming apparatus |
| JP2012218194A (en) * | 2011-04-05 | 2012-11-12 | Seiko Epson Corp | Liquid ejection head, and liquid ejector |
| JP2014148096A (en) * | 2013-02-01 | 2014-08-21 | Seiko Epson Corp | Liquid jet head, method of manufacturing the same, and liquid jet apparatus |
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