JPH07314694A - Ink-jet recording head and ink-jet recording device - Google Patents
Ink-jet recording head and ink-jet recording deviceInfo
- Publication number
- JPH07314694A JPH07314694A JP11148194A JP11148194A JPH07314694A JP H07314694 A JPH07314694 A JP H07314694A JP 11148194 A JP11148194 A JP 11148194A JP 11148194 A JP11148194 A JP 11148194A JP H07314694 A JPH07314694 A JP H07314694A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- nozzle
- nozzle plate
- eutectoid
- recording head
- 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
Links
- 238000007747 plating Methods 0.000 claims abstract description 39
- 229920001971 elastomer Polymers 0.000 claims abstract description 28
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 229920002313 fluoropolymer Polymers 0.000 claims description 9
- 239000004811 fluoropolymer Substances 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 239000005871 repellent Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 71
- -1 halogen ions Chemical class 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000873 masking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 230000005499 meniscus Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 230000002940 repellent Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910001453 nickel ion Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229920005556 chlorobutyl Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/1433—Structure of nozzle plates
-
- 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
- B41J2/162—Manufacturing of the nozzle plates
-
- 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
- B41J2/164—Manufacturing processes thin film formation
- B41J2/1643—Manufacturing processes thin film formation thin film formation by plating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
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ヘッド
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording head for ejecting ink droplets to form an image on a recording medium.
【０００２】[0002]
【従来の技術】インクジェット記録装置において、イン
クノズル周縁部に不均一なインクの溜りがあると、吐出
するインク滴が正規の飛翔方向から離脱したり、さらに
は上記インク溜りによりインク滴形成時のメニスカスの
安定性が低下して吐出異常になり良好な記録が行えなく
なる。さらに印字品質を向上するために、単位当りのイ
ンクノズル数を多くしてドット密度を高める場合、これ
に応じてインク滴、インクノズルは小さくなり、インク
ノズル間距離は狭くなる。したがって、インクノズル周
縁部における不均一なインクの溜りの影響はより受けや
すい。また、高速印字を実現するために、高周波数で駆
動する場合も同様に上記影響を受けやすい。2. Description of the Related Art In an ink jet recording apparatus, if there are non-uniform ink pools around the ink nozzles, the ejected ink drops may separate from the normal flight direction, and the ink pools may cause ink drop formation. The stability of the meniscus is reduced, and ejection abnormality occurs, making it impossible to perform good recording. Further, in order to improve the printing quality, when the number of ink nozzles per unit is increased to increase the dot density, the ink droplets and ink nozzles are reduced accordingly, and the distance between the ink nozzles is reduced. Therefore, it is more susceptible to the non-uniform accumulation of ink in the peripheral portion of the ink nozzle. In addition, in order to realize high-speed printing, driving at a high frequency is also likely to be affected by the above.
【０００３】そのため、インクノズルの周縁部にインク
を弾く撥水性を有した表面処理を施して上述の問題を解
決し、安定したインク滴の吐出を得ようとする提案が数
多く報告されている。特開平５−１１６３２７号公報
に、ステンレス製ノズルプレートにニッケル金属イオン
とフッ素系高分子の粒子を分散させた電解液の中に浸漬
し、ついで該フッ素系高分子の融点以上の温度で加熱し
て、前記ノズルプレートの該当する部位にフッ素系高分
子共析メッキの撥水性の皮膜を設けて濡れが生じるのを
抑えるようにした技術が示されている。Therefore, many proposals have been made to solve the above problems by performing surface treatment having water repellency for repelling ink on the peripheral portion of the ink nozzle to obtain stable ejection of ink droplets. In Japanese Unexamined Patent Publication No. 5-116327, a stainless nozzle plate is immersed in an electrolytic solution in which nickel metal ions and particles of a fluoropolymer are dispersed, and then heated at a temperature equal to or higher than the melting point of the fluoropolymer. Then, there is disclosed a technique in which a water-repellent film of fluoropolymer eutectoid plating is provided on a corresponding portion of the nozzle plate to suppress the occurrence of wetting.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ノズル
でのインク目詰まりによる吐出不良を防いだり、吐出不
能時に回復させる手段としてキャップを用いることが一
般に行われており、キャップの材質及びインクの種類に
よっては、前記共析メッキの皮膜がキャップゴムとの当
接部分で腐食し、それが進行してノズル近傍まで達し撥
水性を損なうことがある。However, a cap is generally used as a means for preventing ejection failure due to ink clogging at the nozzle and for recovering when ejection is impossible. Depending on the material of the cap and the type of ink, a cap is used. In some cases, the film of the eutectoid plating corrodes at the contact portion with the cap rubber, which progresses to reach the vicinity of the nozzle and impairs water repellency.
【０００５】腐食は共析メッキの孔食という形態で発生
するが、水溶液中で保護皮膜をもち、環境中に十分の濃
度のハロゲンイオン（実際上、塩化物イオン）が存在す
ると、局部的な皮膜貫通がおこりうる状態となる。しか
も、このとき金属の電極電位が孔食電位より貴である
と、皮膜貫通部分は食孔として成長を続けるようにな
る。Corrosion occurs in the form of pitting corrosion of eutectoid plating, but if a protective film is present in an aqueous solution and a sufficient concentration of halogen ions (actually, chloride ions) are present in the environment, local corrosion occurs. It is in a state where film penetration can occur. Moreover, at this time, if the electrode potential of the metal is nobler than the pitting potential, the portion penetrating the film continues to grow as a pit.
【０００６】実際に、塩素元素を含むゴムの材質はその
傾向が著しく、ブチル、塩素化ブチルゴムが相当する。
反面、ブチルゴムは気密性及び耐薬品性に優れ、インク
ジェット記録装置に広く使用されている。インク中にも
塩化物イオンは十分含まれているが、キャップとの繰り
返しの密着動作のほうが支配的であった。Actually, the tendency of the material of the rubber containing chlorine element is remarkable, and butyl and chlorinated butyl rubber correspond to it.
On the other hand, butyl rubber has excellent airtightness and chemical resistance and is widely used in inkjet recording apparatuses. Chloride ions were also sufficiently contained in the ink, but repeated contact with the cap was dominant.
【０００７】また、ノズル部を保護する目的でノズル面
を凹部に形成するためにノズルプレート表面に１０〜２
０μ厚の金属メッキを形成した後、前記共析メッキを被
覆した場合では、下地のメッキまで腐食が進行して、キ
ャップのシール性が確保できないという事態にもなる。Further, in order to form the nozzle surface in the concave portion for the purpose of protecting the nozzle portion, 10 to 2 are formed on the surface of the nozzle plate.
In the case where the eutectoid plating is coated after the 0 μm-thick metal plating is formed, corrosion progresses to the underlying plating, and the sealing property of the cap cannot be ensured.
【０００８】本発明はこのような課題に鑑みてなされた
もので、その目的とするところは、長期において信頼性
のあるノズルプレートを有するインクジェット記録ヘッ
ドを提供することにある。The present invention has been made in view of such problems, and an object thereof is to provide an ink jet recording head having a nozzle plate which is reliable for a long period of time.
【０００９】[0009]
【課題を解決するための手段】このような問題を解消す
るために本発明のインクジェット記録ヘッドは、ノズル
プレート表面にフッ素系高分子共析メッキが被覆されて
いるインクジェット記録ヘッドにおいて、キャップゴム
が前記ノズルプレート面と当接する部分にフッ素系共析
メッキ未処理部を形成する構成としたことを特徴とす
る。In order to solve such a problem, an ink jet recording head of the present invention has a cap rubber in an ink jet recording head in which a surface of a nozzle plate is coated with a fluoropolymer eutectoid plating. It is characterized in that a fluorine-based eutectoid-plating untreated portion is formed in a portion in contact with the nozzle plate surface.
【００１０】[0010]
【実施例】以下、本発明の実施例について図面を用いて
詳細に説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１１】図１は、本発明の第１実施例であるインク
ジェト記録装置におけるノズルプレートの構造の平面図
を示す。また図２はそのノズルプレートの製造工程を示
したものである。FIG. 1 is a plan view showing the structure of a nozzle plate in an inkjet recording apparatus according to the first embodiment of the present invention. FIG. 2 shows the manufacturing process of the nozzle plate.
【００１２】はじめに、図２によりこのノズルプレート
の製造方法について説明する。図において符号１で示し
たノズルプレート１はステンレス鋼で形成されていて、
裏面２側に大きく開口した漏斗状部分３と、表面４側に
狭く開口したオリフィス部分５とからなる複数のノズル
孔６が設けられている。First, a method of manufacturing this nozzle plate will be described with reference to FIG. The nozzle plate 1 indicated by reference numeral 1 in the drawing is made of stainless steel,
A plurality of nozzle holes 6 each having a funnel-shaped portion 3 having a large opening on the back surface 2 side and an orifice portion 5 having a narrow opening on the front surface 4 side are provided.
【００１３】ノズルプレート１の表裏両面にドライフィ
ルムレジスト７ａ、７ｂをラミネートする。そしてつぎ
に、この上をマスク部材８ａ、８ｂで覆って、ノズルプ
レート１の裏面２の漏斗状部分３とその周囲部分９以外
の部分及びノズルプレート１表面４の共析メッキ未処理
部を露光し、現像除去することで共析メッキ未処理部の
マスキング層１０ａ、１０ｂが形成される。Dry film resists 7a and 7b are laminated on both front and back surfaces of the nozzle plate 1. Then, this is covered with mask members 8a and 8b, and the portion other than the funnel-shaped portion 3 of the back surface 2 of the nozzle plate 1 and its peripheral portion 9 and the undeposited eutectoid-plated portion of the surface 4 of the nozzle plate 1 are exposed. Then, by removing by development, the masking layers 10a and 10b in the untreated portions of eutectoid plating are formed.
【００１４】このようにしてマスキング層１０ａ、１０
ｂが形成されたノズルプレート１は、一旦酸で洗浄した
の上、ニッケルイオンとポリテトラフルオエチレン等の
撥水性高分子樹脂を電荷により分散させた電解液中に浸
漬し、ついで、電解液を攪拌しながらその表面に共析メ
ッキ１１を施す。In this way, the masking layers 10a, 10
The nozzle plate 1 on which b is formed is once washed with an acid, then immersed in an electrolytic solution in which nickel ions and a water repellent polymer resin such as polytetrafluoroethylene are dispersed by an electric charge, and then the electrolytic solution is removed. The surface is subjected to eutectoid plating 11 with stirring.
【００１５】この共析メッキ処理に使用されるフッ素系
高分子としては、ポリテトラフルオロエチレン、ポリパ
ーフルオロアルコキシブタジエン、ポリフルオロビニリ
デン、ポリフルオロビニル、ポリジパーフルオロアルキ
ルフマレートを単独及び混合したものが用いられる。As the fluorine-based polymer used in this eutectoid plating treatment, polytetrafluoroethylene, polyperfluoroalkoxybutadiene, polyfluorovinylidene, polyfluorovinyl, polydiperfluoroalkyl fumarate, alone or in a mixture. Is used.
【００１６】これにより、ポリテトラフルオロエチレン
の粒子は、ニッケルイオンを媒介としてマスキング層１
０ａ、１０ｂで被覆されていないノズルプレート１の表
裏面とノズル孔６の内面に均一の層となって付着する。
共析メッキの方法としては、インクジェット記録用イン
ク中にはＬｉ+、Ｎａ+、Ｋ+、Ｃａ2+、Ｃｌ-、Ｓ
Ｏ4 2 -、ＳＯ3 2-、ＮＯ3 -、ＮＯ2 -等のイオンが不純物と
して混入しているため、これらのイオン種の影響を受け
にくくかつ耐久性の高い電解法が適している。As a result, the particles of polytetrafluoroethylene are masked by nickel ions as a medium.
A uniform layer is attached to the front and back surfaces of the nozzle plate 1 not covered with 0a and 10b and the inner surface of the nozzle hole 6.
As a method of eutectoid plating, Li + , Na + , K + , Ca 2+ , Cl-, S in the ink for ink jet recording is used.
Since ions such as O 4 2 − , SO 3 2− , NO 3 − , and NO 2 − are mixed as impurities, an electrolytic method that is not easily influenced by these ion species and has high durability is suitable.
【００１７】つぎに、マスキング層１０ａ、１０ｂを剥
離液にて溶融除去する。つぎに、ノズルプレート１に荷
重を加えて反りの発生を抑えながら、これをポリテトラ
フルオロエチレンの融点以上の温度、例えば、３５０℃
以上の温度で加熱する。この時の荷重は、０．９８N/cm
2以上、好ましくは、４．９N/cm2の圧力をかけるとよ
い。Next, the masking layers 10a and 10b are melted and removed with a stripping solution. Then, while applying a load to the nozzle plate 1 to suppress the occurrence of warpage, the temperature of the nozzle plate 1 is set to a temperature equal to or higher than the melting point of polytetrafluoroethylene, for example, 350 ° C.
Heat at the above temperature. The load at this time is 0.98 N / cm
A pressure of 2 or more, preferably 4.9 N / cm 2 may be applied.
【００１８】これにより、ポリテトラフルオロエチレン
の粒子は、マスキング層１０ａ、１０ｂで被覆されてい
ないノズルプレート１の表裏面とノズル孔６の内面に融
着し、そこに平滑でしかも硬度の大なる撥インク性のメ
ッキ皮膜１２を形成する。As a result, the particles of polytetrafluoroethylene are fused to the front and back surfaces of the nozzle plate 1 not covered with the masking layers 10a and 10b and the inner surfaces of the nozzle holes 6, and they are smooth and have high hardness. An ink repellent plating film 12 is formed.
【００１９】フッ素系高分子共析メッキ層は、膜厚が薄
すぎるとインク吐出口を有する面の撥インク性が不十分
となり、厚すぎるとインク吐出口の径の精度へ影響がで
るから、メッキ層の膜厚は１〜１０μｍの範囲に抑える
ように制御する。また、メッキ層中のフッ素系高分子の
共析量は、メッキ層中１０〜５０vol％になるようにす
ることが好ましい。If the film thickness of the fluoropolymer eutectoid plating layer is too thin, the ink repellency of the surface having the ink ejection port will be insufficient, and if it is too thick, the accuracy of the diameter of the ink ejection port will be affected. The thickness of the plated layer is controlled to be within the range of 1 to 10 μm. Further, it is preferable that the eutectoid amount of the fluoropolymer in the plating layer is 10 to 50 vol% in the plating layer.
【００２０】さらにノズルプレート１の裏面２に図示し
ないインク流路の形成された基体を接合することによ
り、インクジェット記録ヘッドの形成される。Further, an ink jet recording head is formed by joining a back surface 2 of the nozzle plate 1 to a substrate (not shown) in which ink flow paths are formed.
【００２１】このように、ノズルプレート１の表面４と
ノズル孔６の内面に形成された共析メッキ皮膜１２は撥
インク性が高いために、インクがノズル孔周縁部に不均
一なインク溜りとなって残ることはない。したがって、
吐出するインク滴が正規の飛翔方向から離脱したり、さ
らには上記インク溜りによりインク滴形成時のメニスカ
スの安定性が低下することもないため、安定して、高周
波数での記録書き込みを可能にする。As described above, since the eutectoid plating film 12 formed on the surface 4 of the nozzle plate 1 and the inner surface of the nozzle hole 6 has high ink repellency, the ink is unevenly accumulated in the peripheral portion of the nozzle hole. It does not remain. Therefore,
The ejected ink droplets do not separate from the normal flight direction, and the stability of the meniscus at the time of ink droplet formation does not decrease due to the ink pool, so stable and high-frequency recording / writing is possible. To do.
【００２２】ノズルプレートには図１で示すとおり、キ
ャップゴムが当接する部位には共析メッキ未処理部１３
が形成されていて、安定したステンレス鋼面のためイン
ク介在下でのキャップゴムとの繰り返しの密着動作によ
って腐食が発生することはない。したがって、キャップ
ゴムとの密着性が損なわれることはなく、信頼性の高い
シール性を確保できる。また、キャップゴムとの密着部
に発生した腐食がトリガーとなってノズル近傍の撥水を
低下させることもないため、長期にわたって高い撥イン
ク性を維持することが可能となる。As shown in FIG. 1, on the nozzle plate, the eutectoid-plated untreated portion 13 is provided at the portion where the cap rubber comes into contact.
Since a stable stainless steel surface is formed, corrosion does not occur due to repeated close contact with the cap rubber under the presence of ink. Therefore, the adhesiveness with the cap rubber is not impaired, and highly reliable sealability can be secured. In addition, since the corrosion generated at the contact portion with the cap rubber does not trigger the reduction of the water repellency near the nozzle, it is possible to maintain high ink repellency for a long period of time.
【００２３】図３は本発明の第２の実施例を示すもので
ある。ノズルプレートの製造方法は第１の実施例と同様
であり、図中のノズルプレート１表面の共析メッキ皮膜
１２及び未処理部１３ａ、１３ｂのパターンをフォトリ
ソにより形成する。FIG. 3 shows a second embodiment of the present invention. The manufacturing method of the nozzle plate is the same as that of the first embodiment, and the pattern of the eutectoid plating film 12 and the untreated portions 13a and 13b on the surface of the nozzle plate 1 in the figure is formed by photolithography.
【００２４】複数のノズル孔６を有するノズル列１４は
３列あり、カラー色のイエロー、マゼンタ、シアンのイ
ンクを吐出するように割り当てられている。そのノズル
列１４間に、共析メッキ未処理部１３ａがキャップゴム
が当接する共析メッキ未処理部１３ｂに連なる構成で形
成されている。したがって、第１の実施例と同様、キャ
ップゴムが当接する部位には共析メッキ未処理部１３が
形成されていて、安定したステンレス鋼面のためインク
介在下でのキャップゴムとの繰り返しの密着動作によっ
て腐食が発生することはない。したがって、キャップゴ
ムとの密着性が損なわれることはない。There are three nozzle rows 14 having a plurality of nozzle holes 6, and they are assigned so as to eject color inks of yellow, magenta and cyan. An eutectoid-plated untreated portion 13a is formed between the nozzle rows 14 so as to be continuous with the eutectoid-plated untreated portion 13b with which the cap rubber abuts. Therefore, as in the first embodiment, the eutectoid-plated untreated portion 13 is formed at the portion where the cap rubber abuts, and because of the stable stainless steel surface, repeated adhesion with the cap rubber under the presence of ink. Operation does not cause corrosion. Therefore, the adhesiveness with the cap rubber is not impaired.
【００２５】また、このようなカラーヘッドの場合、ノ
ズルプレート１表面に付着した付着物及び残インクを除
去するために弾性体のクリーニング部材で摺擦すると
き、特に、ノズル列の並び方向へ摺擦するとき、その動
作により残インク及び先行して当たるノズル列のノズル
から引き出したインクが、それ以降のノズル列へ達す
る。ノズル部ではそのインクメニスカスを安定に保持す
るために負圧がかかっており、前記インクはノズル内へ
引っ張られ、インクが混色する。Further, in the case of such a color head, when sliding with a cleaning member made of an elastic material in order to remove the adhered matter and the residual ink adhering to the surface of the nozzle plate 1, especially in the direction in which the nozzle rows are arranged. When rubbing, the remaining ink and the ink drawn from the nozzles of the nozzle row that hits the preceding ink reach the subsequent nozzle rows. Negative pressure is applied to the nozzle portion in order to stably hold the ink meniscus, and the ink is pulled into the nozzle to mix the ink.
【００２６】本発明の場合、各ノズル列１４が独立した
共析メッキ皮膜１２域に形成されていて、その間及びそ
の外側には未処理部１３ａ、１３ｂが設けられているた
め、クリーニング部材で運ばれるインクは、未処理部の
もつ親水性により貯留され、それ以降へ持ち越すインク
量が抑えられる。したがってインクの混色が低減され、
その回復手段として行う非印字時のインク吐出動作の吐
出数を低減することができる。In the case of the present invention, since each nozzle row 14 is formed in the independent eutectoid plating film 12 area and the untreated portions 13a and 13b are provided between and outside the same, they are carried by a cleaning member. The retained ink is stored due to the hydrophilicity of the untreated portion, and the amount of ink carried over to the subsequent portions is suppressed. Therefore, the color mixture of ink is reduced,
It is possible to reduce the number of ink ejection operations during non-printing performed as the recovery means.
【００２７】ここでは、ノズル列が３列のカラーヘッド
の場合について説明したが、ブラックインクも含めた４
列の４色カラーヘッドの構成の場合でも同様の効果が得
られる。Here, the case of a color head having three nozzle rows has been described, but four including black ink has been described.
The same effect can be obtained in the case of the configuration of the four-color color head in the row.
【００２８】図４は本発明の他の実施例を示すものであ
る。FIG. 4 shows another embodiment of the present invention.
【００２９】ノズルプレート１のノズル孔６形成面は他
の部分に比べ凹部１５であり、ノズル孔６を中心とした
同心円形状及び、１つのノズル列全体を含む長穴となっ
ている。キャップゴムが当接する部位もノズル形成面と
同一面上にある。そして、キャップゴムが当接する部位
は共析メッキ未処理部１３ｂが形成されており、それ以
外の部位は前述の実施例と同様に共析メッキ皮膜１２が
施されている。ノズル孔６形成面及びキャップゴムが当
接する部位の凹部は通常のニッケルメッキにより形成さ
れており、印字媒体等との接触によるノズルの保護及び
その周囲の撥水性確保の目的から５〜１５μｍの段差が
必要である。The surface of the nozzle plate 1 on which the nozzle holes 6 are formed is a concave portion 15 as compared with the other portions, and is a concentric circle centered on the nozzle holes 6 and an elongated hole including one entire nozzle row. The part where the cap rubber contacts is also on the same surface as the nozzle forming surface. An eutectoid-plated untreated portion 13b is formed on the portion contacting the cap rubber, and the eutectoid plating film 12 is applied to the other portions as in the above-described embodiment. The concave portion of the surface where the nozzle hole 6 is formed and the portion where the cap rubber abuts is formed by normal nickel plating, and a step of 5 to 15 μm is provided for the purpose of protecting the nozzle by contact with a printing medium and ensuring the water repellency around it. is necessary.
【００３０】ノズルプレート１の製造方法は共析メッキ
を被覆する前に、フォトリソにより凹部パターンを形成
する。さらに前述と同様の方法で共析メッキ及び未処理
部を形成する。本実施例でも第１の実施例と同様、キャ
ップゴムが当接する部位には共析メッキ未処理部１３が
形成されていて、安定したステンレス鋼面のためインク
介在下でのキャップゴムとの繰り返しの密着動作によっ
て腐食が発生することはない。In the method for manufacturing the nozzle plate 1, a concave pattern is formed by photolithography before coating the eutectoid plating. Further, the eutectoid plating and the untreated portion are formed by the same method as described above. In this embodiment as well, as in the first embodiment, the eutectoid-plated untreated portion 13 is formed at the portion where the cap rubber abuts, and because of the stable stainless steel surface, it repeats with the cap rubber under the presence of ink. Corrosion does not occur due to the close contact operation of.
【００３１】本発明では、共析メッキ未処理部１３ｂを
積極的に凹部に設けることにより、第２の実施例で述べ
た、クリーニング部材で運ばれるインクを、未処理部の
もつ親水性により貯留する機能がアップし、それ以降へ
持ち越すインク量がさらに抑えられる。また、その段差
部にクリーニング部材が押しつけられることにより、そ
れ自体も清浄化される。したがってインクの混色をより
低減することができる。カラーインクジェットヘッドで
は、インクを紙へ積極的に浸透させて速乾性を得ている
が、この種のインクは濡れ性が高く特に効果的である。
ノズル形成面の凹部には撥水処理が施されているため、
クリーニング部材により多量のインクを拭き残すことは
ない。In the present invention, the eutectoid-plated untreated portion 13b is positively provided in the concave portion, so that the ink carried by the cleaning member described in the second embodiment is retained by the hydrophilic property of the untreated portion. Function is improved, and the amount of ink carried over to the following is further suppressed. In addition, the cleaning member itself is cleaned by pressing the cleaning member against the stepped portion. Therefore, color mixture of ink can be further reduced. In a color inkjet head, ink is positively penetrated into paper to obtain quick drying property, but this kind of ink has high wettability and is particularly effective.
Since the recesses on the nozzle formation surface are treated to be water repellent,
A large amount of ink is not wiped off by the cleaning member.
【００３２】図５は本発明の他の実施例を示すものであ
る。ノズルプレートの製造方法は第１の実施例と同様で
あり、図中のノズルプレート１表面の共析メッキ皮膜１
２及び未処理部１３ｂ、１３ｃのパターンをフォトリソ
により形成する。本実施例でも第１の実施例と同様、キ
ャップゴムが当接する部位には共析メッキ未処理部１３
が形成されていて、安定したステンレス鋼面のためイン
ク介在下でのキャップゴムとの繰り返しの密着動作によ
って腐食が発生することはない。FIG. 5 shows another embodiment of the present invention. The manufacturing method of the nozzle plate is the same as that of the first embodiment, and the eutectoid plating film 1 on the surface of the nozzle plate 1 in the drawing is used.
2 and the unprocessed portions 13b and 13c are formed by photolithography. Also in this embodiment, as in the first embodiment, the eutectoid-plated untreated portion 13 is provided at the portion where the cap rubber comes into contact.
Since a stable stainless steel surface is formed, corrosion does not occur due to repeated close contact with the cap rubber under the presence of ink.
【００３３】本発明では、図で示すとおり、共析メッキ
未処理部に局部的に面積の広い部分１３ｃが形成されて
いて、キャップ１６内に設けられた多孔質部材１７が前
記未処理部１３ｃに当接する構成となっている。インク
流路内へのインク充填のために、キャップ１６内をバル
ブ１８及びポンプ１９の作用により負圧にしてノズル孔
よりインクを吸引する復帰動作の際に、親水性の共析メ
ッキ未処理部１３ｃに優先的に残存したインクを多孔質
部材１７を介して、積極的に吸収除去する。本実施例で
は濡れ性の高いインクを用いる場合に、とくに効果的で
ある。In the present invention, as shown in the figure, a portion 13c having a large area is locally formed in the untreated portion of the eutectoid plating, and the porous member 17 provided in the cap 16 is the untreated portion 13c. Is abutted against. In order to fill the ink flow path with ink, a negative pressure is applied to the inside of the cap 16 by the action of the valve 18 and the pump 19 to suck the ink from the nozzle hole. Ink remaining preferentially on 13c is positively absorbed and removed through the porous member 17. This embodiment is particularly effective when an ink having high wettability is used.
【００３４】[0034]
【発明の効果】以上述べたように本発明によれば、キャ
ップゴム部材が当接する部位には共析メッキ未処理部が
形成されているため、インク介在下でのキャップゴムと
の繰り返しの密着動作によって腐食が発生することはな
い。したがって、キャップゴムとの密着性が損なわれる
ことはなく、信頼性の高いシール性を確保できる。ま
た、キャップゴムとの密着部に発生した腐食がトリガー
となってノズル近傍の撥水を低下させることもないた
め、長期にわたって高い撥インク性を維持することが可
能となる。As described above, according to the present invention, since the undeposited eutectoid plating portion is formed at the portion where the cap rubber member contacts, repeated contact with the cap rubber is performed with the ink interposed. Operation does not cause corrosion. Therefore, the adhesiveness with the cap rubber is not impaired, and highly reliable sealability can be secured. In addition, since the corrosion generated at the contact portion with the cap rubber does not trigger the reduction of the water repellency near the nozzle, it is possible to maintain high ink repellency for a long period of time.
【００３５】また、共析メッキ未処理部は他の部分に比
べて親水性があるため、キャップゴムとの接触において
インクが介在した状態となり、密着性が高い。このため
にシール性に優れるという効果が得られる。Further, since the undeposited eutectoid plate is more hydrophilic than the other parts, the ink intervenes in contact with the cap rubber, and the adhesion is high. Therefore, the effect of excellent sealing property can be obtained.
【００３６】さらに、共析メッキ未処理部ではステンレ
ス鋼が露出している。共析メッキ面ではそのメッキ層中
にフッ素系高分子を１０〜５０vol％含有しているた
め、ステンレス鋼面に比べてやや硬度が劣る。キャップ
ゴム当接部を共析メッキ未処理部としたため、印字動作
中の紙擦り等のトラブルに伴う外傷のダメージもなく、
キャッピング時のシール性の信頼性が向上する。Furthermore, the stainless steel is exposed in the untreated portion of the eutectoid plating. The eutectoid plated surface contains 10 to 50 vol% of a fluorine-containing polymer in the plated layer, and thus is slightly inferior in hardness to the stainless steel surface. Since the cap rubber contact part is a non-eutectoid plating treated part, there is no damage due to external damage due to trouble such as paper rubbing during printing operation.
The reliability of the sealing property during capping is improved.
【図１】本発明におけるインクジェット記録ヘッドのノ
ズルプレートを示した平面図である。FIG. 1 is a plan view showing a nozzle plate of an inkjet recording head according to the present invention.
【図２】（ａ）乃至（ｇ）は、ノズルプレートに撥水性
皮膜を形成する各工程を示した図である。2A to 2G are diagrams showing respective steps of forming a water-repellent coating on a nozzle plate.
【図３】本発明の第２の実施例におけるンクジェット記
録ヘッドのノズルプレートを示した平面図である。FIG. 3 is a plan view showing a nozzle plate of an ink jet recording head according to a second embodiment of the invention.
【図４】本発明の第３の実施例におけるンクジェット記
録ヘッドのノズルプレートを示した断面図である。FIG. 4 is a cross-sectional view showing a nozzle plate of an ink jet recording head according to a third embodiment of the invention.
【図５】（ａ）は本発明の第４の実施例におけるンクジ
ェット記録ヘッドのノズルプレートを示した平面図、
（ｂ）はキャップとの構成を示した断面図である。FIG. 5A is a plan view showing a nozzle plate of an ink jet recording head according to a fourth embodiment of the present invention,
(B) is sectional drawing which showed the structure with a cap.
１ ノズルプレート ２ 裏面 ３ 漏斗状部分 ４ 表面 ５ オリフィス部分 ６ ノズル孔 ７ａ、７ｂ ドライフィルムレジスト ８ａ、８ｂ マスク部材 ９ 漏斗状部周囲 １０ａ、１０ｂ マスキング層 １１ 共析メッキ １２ 共析メッキ皮膜 １３、１３ｂ、１３ｃ 共析メッキ未処理部 １４ ノズル列 １５ 凹部 １６ キャップ １７ 多孔質部材 １８ バルブ １９ ポンプ 1 Nozzle plate 2 Back surface 3 Funnel-shaped portion 4 Surface 5 Orifice portion 6 Nozzle hole 7a, 7b Dry film resist 8a, 8b Mask member 9 Around the funnel-shaped portion 10a, 10b Masking layer 11 Eutectoid plating 12 Eutectoid plating film 13, 13b , 13c Eutectoid plated untreated portion 14 Nozzle row 15 Recessed portion 16 Cap 17 Porous member 18 Valve 19 Pump
Claims (4)
れ、表面にフッ素系高分子共析メッキが被覆されたノズ
ルプレートを有するインクジェット記録ヘッドであっ
て、 前記ノズルプレート表面のキャップゴムが当接する部分
にフッ素系共析メッキ未処理部を形成したことを特徴と
するインクジェット記録ヘッド。1. An ink jet recording head having a nozzle plate having a nozzle opening for ejecting ink, the surface of which is coated with a fluoropolymer eutectoid plating, wherein a cap rubber on the surface of the nozzle plate is contacted. An ink jet recording head, characterized in that a fluorine-based eutectoid plating untreated portion is formed in a contact portion.
数列有するノズルプレートを備えたインクジェット記録
ヘッドにおいて、 前記ノズルプレート表面は、フッ素系高分子共析メッキ
が被覆され、前記ノズル列間に所定の幅で帯状の共析メ
ッキ未処理部がキャップゴムと当接する共析メッキ未処
理部に連なる構成で形成されていることを特徴とするイ
ンクジェット記録ヘッド。2. An ink jet recording head comprising a nozzle plate having a plurality of nozzle rows each having a plurality of nozzle openings, wherein the nozzle plate surface is coated with a fluoropolymer eutectoid plating, and a predetermined distance is provided between the nozzle rows. The inkjet recording head is characterized in that a strip-shaped undeposited eutectoid-plated portion having a width of 10 mm is formed so as to be continuous with the undeposited eutectoid-plated portion that contacts the cap rubber.
べてがノズルプレート表面に対し凹状に形成されている
ことを特徴とする請求項１もしくは請求項２に記載のイ
ンクジェット記録ヘッド。3. The ink jet recording head according to claim 1, wherein a part or all of the undeposited eutectoid plating portion is formed in a concave shape with respect to the surface of the nozzle plate.
れたノズルプレートを有するインクジェット記録ヘッド
と、この記録ヘッドの前記ノズル開口部を覆うように選
択的に密着可能なキャップ部材とを有するインクジェッ
ト記録装置であって、 前記記録ヘッドのノズルプレート表面は、フッ素系高分
子共析メッキ及び共析メッキ未処理部が形成されてお
り、非印字時に前記共析メッキ未処理部の一部に当接す
る多孔質部材を前記キャップ部材内に設けたことを特徴
とするインクジェット記録装置。4. An inkjet having an inkjet recording head having a nozzle plate having nozzle openings for ejecting ink, and a cap member capable of selectively adhering so as to cover the nozzle opening of the recording head. In the recording apparatus, the surface of the nozzle plate of the recording head is formed with a fluoropolymer eutectoid plating and a non-eutectoid plating-treated portion, and a part of the non-eutectoid-plated untreated portion is applied during non-printing An ink jet recording apparatus, wherein a porous member in contact with the cap member is provided in the cap member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148194A JP3590420B2 (en) | 1994-05-25 | 1994-05-25 | Ink jet recording head and ink jet recording apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148194A JP3590420B2 (en) | 1994-05-25 | 1994-05-25 | Ink jet recording head and ink jet recording apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07314694A true JPH07314694A (en) | 1995-12-05 |
| JP3590420B2 JP3590420B2 (en) | 2004-11-17 |
Family
ID=14562356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11148194A Expired - Fee Related JP3590420B2 (en) | 1994-05-25 | 1994-05-25 | Ink jet recording head and ink jet recording apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3590420B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747960A1 (en) * | 1996-04-24 | 1997-10-31 | Toxot Sciences & Applic | Nozzle mounting for ink jet printer |
| JPH1071721A (en) * | 1996-08-30 | 1998-03-17 | Ricoh Co Ltd | Ink jet head, its manufacture, and ink jet recorder |
| WO2001034398A1 (en) * | 1999-11-11 | 2001-05-17 | Seiko Epson Corporation | Ink jet printer head and production method thereof, and polycyclic thiol compound |
| JP2006088389A (en) * | 2004-09-21 | 2006-04-06 | Ricoh Co Ltd | Image recording device and recording liquid cartridge mounted thereon |
| JP2008100445A (en) * | 2006-10-19 | 2008-05-01 | Sharp Corp | Liquid discharge head, liquid ejector and manufacturing method of liquid discharge head |
| US8152984B2 (en) | 2007-06-12 | 2012-04-10 | Brother Kogyo Kabushiki Kaisha | Method of manufacturing nozzle plate |
| US9006509B2 (en) | 2003-07-18 | 2015-04-14 | Kimberly-Clark Worldwide, Inc. | Absorbent article with high quality ink jet image produced at line speed |
| JP2017007118A (en) * | 2015-06-17 | 2017-01-12 | エスアイアイ・プリンテック株式会社 | Ink jet head, liquid jet recorder, and method for manufacturing ink jet head |
-
1994
- 1994-05-25 JP JP11148194A patent/JP3590420B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747960A1 (en) * | 1996-04-24 | 1997-10-31 | Toxot Sciences & Applic | Nozzle mounting for ink jet printer |
| JPH1071721A (en) * | 1996-08-30 | 1998-03-17 | Ricoh Co Ltd | Ink jet head, its manufacture, and ink jet recorder |
| WO2001034398A1 (en) * | 1999-11-11 | 2001-05-17 | Seiko Epson Corporation | Ink jet printer head and production method thereof, and polycyclic thiol compound |
| US6629754B1 (en) | 1999-11-11 | 2003-10-07 | Seiko Epson Corporation | Ink jet printer head manufacturing method thereof, and polycyclic thiol compounds |
| US9006509B2 (en) | 2003-07-18 | 2015-04-14 | Kimberly-Clark Worldwide, Inc. | Absorbent article with high quality ink jet image produced at line speed |
| US9901492B2 (en) | 2003-07-18 | 2018-02-27 | Kimberly-Clark Worldwide, Inc. | Absorbent article with high quality ink jet image produced at line speed |
| JP2006088389A (en) * | 2004-09-21 | 2006-04-06 | Ricoh Co Ltd | Image recording device and recording liquid cartridge mounted thereon |
| JP4570925B2 (en) * | 2004-09-21 | 2010-10-27 | 株式会社リコー | Image recording device |
| JP2008100445A (en) * | 2006-10-19 | 2008-05-01 | Sharp Corp | Liquid discharge head, liquid ejector and manufacturing method of liquid discharge head |
| US8152984B2 (en) | 2007-06-12 | 2012-04-10 | Brother Kogyo Kabushiki Kaisha | Method of manufacturing nozzle plate |
| JP2017007118A (en) * | 2015-06-17 | 2017-01-12 | エスアイアイ・プリンテック株式会社 | Ink jet head, liquid jet recorder, and method for manufacturing ink jet head |
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