JPH04170478A - Ink for ink jet recording - Google Patents
Ink for ink jet recordingInfo
- Publication number
- JPH04170478A JPH04170478A JP2297690A JP29769090A JPH04170478A JP H04170478 A JPH04170478 A JP H04170478A JP 2297690 A JP2297690 A JP 2297690A JP 29769090 A JP29769090 A JP 29769090A JP H04170478 A JPH04170478 A JP H04170478A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- inkjet recording
- present
- recording
- surface tension
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006103 coloring component Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000000049 pigment Substances 0.000 claims description 17
- 238000012546 transfer Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 abstract description 5
- UZZFFIUHUDOYPS-UHFFFAOYSA-L disodium 4-amino-3,6-bis[[4-[(2,4-diaminophenyl)diazenyl]phenyl]diazenyl]-5-oxido-7-sulfonaphthalene-2-sulfonate Chemical compound [Na+].[Na+].Nc1ccc(N=Nc2ccc(cc2)N=Nc2c(N)c3c(O)c(N=Nc4ccc(cc4)N=Nc4ccc(N)cc4N)c(cc3cc2S([O-])(=O)=O)S([O-])(=O)=O)c(N)c1 UZZFFIUHUDOYPS-UHFFFAOYSA-L 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 53
- 238000000034 method Methods 0.000 description 11
- 230000000740 bleeding effect Effects 0.000 description 9
- 239000000975 dye Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- -1 keto alcohols Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229930194542 Keto Natural products 0.000 description 1
- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000000981 basic dye Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- PXZQEOJJUGGUIB-UHFFFAOYSA-N isoindolin-1-one Chemical compound C1=CC=C2C(=O)NCC2=C1 PXZQEOJJUGGUIB-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- DGBWPZSGHAXYGK-UHFFFAOYSA-N perinone Chemical compound C12=NC3=CC=CC=C3N2C(=O)C2=CC=C3C4=C2C1=CC=C4C(=O)N1C2=CC=CC=C2N=C13 DGBWPZSGHAXYGK-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、液体インクにより文字・画像の記録を行う印
写装置に用いるインクジェット記録用インクに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet recording ink used in a printing device that records characters and images using liquid ink.
［従来の技術］
従来、インクジェット記録方式に用いるインクとしては
、臭気・安全性等の面から水性インクが主流をしめてお
り、各種の水溶性染料を水または水と水溶性有機溶剤の
混合溶剤に溶解させ、必要により各種添加剤が添加され
た溶解系インクが現在使用されている。こ−れらのイン
クジェット記録の長所としては、直接記録であるためプ
ロセスが簡単である、無騒音である、カラー化が容易で
ある、高速記録が可能である、普通紙が使用できるため
低うンニングコストである、微小インク滴を吐出させる
ため高解像度の記録が可能である等の優れた特徴を有し
ており、将来が注目されている。[Prior Art] Traditionally, water-based inks have been the mainstream ink used in inkjet recording systems due to odor and safety issues, and various water-soluble dyes have been mixed with water or a mixed solvent of water and water-soluble organic solvents. Dissolved inks are currently used, which are made by dissolving the inks and adding various additives as necessary. The advantages of these inkjet recordings are that the process is simple because it is direct recording, there is no noise, colorization is easy, high-speed recording is possible, and low noise is achieved because plain paper can be used. It has excellent features such as low running costs and the ability to perform high-resolution recording by ejecting minute ink droplets, and is attracting attention in the future.
［発明が解決しようとする課題］
しかし前記の従来技術では、
（１）被転写体上でインクかにじみ、高品位な記録画像
が得られない。[Problems to be Solved by the Invention] However, with the above-mentioned prior art, (1) Ink smears on the transfer target, making it impossible to obtain a high-quality recorded image.
（２）サテライト粒子が発生しやすく、高解像度の印字
品質が得られない。(2) Satellite particles are likely to occur, making it impossible to obtain high-resolution printing quality.
等の課題がある。There are other issues.
前記課題を解決するために、例えば、特開昭５６−５７
８６２号公報には、強塩基物質を添加し高ｐＨ（ベーハ
ー）とし普通紙の耐水処理剤であるサイズ剤やバルブ材
を化学的に溶解し、ドツトの広がりと吸収性を制御する
方法が提案されているが、上記問題点を完全に解決する
対策とはなっていない。In order to solve the above problem, for example, Japanese Patent Application Laid-Open No. 56-57
Publication No. 862 proposes a method of controlling dot spread and absorbency by adding a strong basic substance to raise the pH (Beher) and chemically dissolving the sizing agent and valve material, which are water-resistant treatment agents for plain paper. However, it is not a measure that completely solves the above problems.
そこで、本発明はこのような問題点を解決するもので、
本発明の第１の目的は、あらゆる被転写体に対して文字
・画像のにじみが生じない、輪郭が鮮明で高濃度なプリ
ントを可能にするインクジェット記録用インクを提供す
ることにある。Therefore, the present invention aims to solve these problems.
A first object of the present invention is to provide an inkjet recording ink that enables high-density printing with clear outlines and no bleeding of characters or images on any transfer material.
本発明の第２の目的は、飛行曲がり、サテライト等の生
じない吐出安定性・吐出応答性に優れたインクジェット
記録用インクを提供することにある。A second object of the present invention is to provide an inkjet recording ink that has excellent ejection stability and ejection response without causing flight deflection, satellites, etc.
［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用インクは、液体インクに
より文字・画像の記録を行うインクジェット記録用イン
クにおいて、少なくとも水と着色剤からなり、記録液滴
と被転写体との初期接触角が７５度以上で、かつ２０°
Ｃにおける表面張力が４０ ｄ ｙ ｎ ｅ ／ ｃ
ｍ以上であることを特徴とする。[Means for Solving the Problems] The inkjet recording ink of the present invention is an inkjet recording ink for recording characters and images using a liquid ink, which is composed of at least water and a colorant, and has a structure in which recording droplets and a transferred object are in contact with each other. The initial contact angle is 75 degrees or more and 20 degrees
The surface tension at C is 40 dyn e/c
m or more.
さらに、前記着色剤として染料及び／又は顔料を３重量
％〜１０重量％含有することを特徴とする。Furthermore, it is characterized by containing 3% by weight to 10% by weight of dye and/or pigment as the coloring agent.
［作用コ
本発明者は、国内及び国外のオフィスで使用されている
代表的な上質紙、ボンド紙、ＰＰＣ用紙再生紙について
各種インク物性と印字品質の関係を調査した結果、記録
液滴と被転写体との初期接触角が７５度以上で、かつ２
０℃における表面張力が４２ ｄ ｙ ｎ ｅ ／ ｃ
ｍ以上であれば繊維に沿ったヒゲ状のにじみを著しく
低減することができ、第１図に示す如く、着色成分は付
着した位置にとどまり、輪郭の鮮明なドツトが固化・定
着することを実験により確認した。[Function] As a result of investigating the relationship between various ink physical properties and print quality for typical high-quality paper, bond paper, and recycled PPC paper used in domestic and overseas offices, the inventor found that recording droplets and The initial contact angle with the transfer body is 75 degrees or more, and 2
The surface tension at 0°C is 42 dyn e/c
If it is more than m, whisker-like bleeding along the fibers can be significantly reduced, and as shown in Figure 1, the coloring component remains in the attached position, and the experiment shows that dots with clear outlines are solidified and fixed. Confirmed by.
［実施例コ
以下に本発明のインクジェット記録用インクについて具
体的に例示する。[Example] The inkjet recording ink of the present invention will be specifically illustrated below.
本発明に使用する着色剤としては、好適な物として直接
染料、酸性染料、塩基性染料、反応染料、食品用色素等
に代表される水溶性染料及び分散染料を使用することが
できる。As the coloring agent used in the present invention, water-soluble dyes and disperse dyes represented by direct dyes, acid dyes, basic dyes, reactive dyes, food colorings, etc. can be suitably used.
又、顔料としては、無Ｉ！顔料（カーボンブラック）、
有機顔料（不溶性アゾ顔料、溶性アゾ顔料、フタロシア
ニン系顔料、イソインドリノン系高級顔料、キナクリド
ン系高級顔料、ペリノン・ペリレン系高級顔料）等があ
る。そのほか顔料表面を樹脂等で処理した加工顔料（グ
ラフトカーボン等）も使用できる。Also, as a pigment, Mu I! pigment (carbon black),
Examples include organic pigments (insoluble azo pigments, soluble azo pigments, phthalocyanine pigments, isoindolinone-based high-grade pigments, quinacridone-based high-grade pigments, perinone/perylene-based high-grade pigments), etc. In addition, processed pigments (grafted carbon, etc.) whose pigment surfaces are treated with resin or the like can also be used.
顔料の粒径としては、１．０μｍ以下に微粒子化されて
いる物が好適である。As for the particle size of the pigment, it is preferable that the pigment be finely divided to 1.0 μm or less.
染料・顔料の添加量としては、１重量％未満では、所望
の色調・温度が得られず、２０重１％を越えると目詰ま
り・保存安定性に支障をきたす可能性があるために１重
量％〜２０重量％が好ましく、より好適には３重量％か
ら１０重量％が好ましい。If the amount of dye/pigment added is less than 1% by weight, the desired color tone and temperature cannot be obtained, and if it exceeds 20% by weight, it may cause clogging or impede storage stability. % to 20% by weight, more preferably 3% to 10% by weight.
顔料分散方法としては、ボールミル、サンドミル、ペブ
ルミル、アトライター、ロールミル、アジテータ−ミル
、ヘンシェルミキサー、コロイドミル、超音波ホモジナ
イザー、ショットミル、パールミル、ジェットミル、オ
ングミル、メカノヒユージョン（ホソカワミクロン）、
ハイブリダイゼーション（奈良機械製作所）等の微粉砕
機・超微粉砕機が使用できる。Pigment dispersion methods include ball mill, sand mill, pebble mill, attritor, roll mill, agitator mill, Henschel mixer, colloid mill, ultrasonic homogenizer, shot mill, pearl mill, jet mill, ong mill, Mechano Fusion (Hosokawa Micron),
A fine grinder or ultra-fine grinder such as Hybridization (Nara Kikai Seisakusho) can be used.
又、プレミキサ−として、ディスパーサ−、インペラー
ミキサー等を用い予備分散を行えばより効果的である。Further, it is more effective to carry out preliminary dispersion using a disperser, impeller mixer, etc. as a premixer.
分散安定性を付与するための分散剤・界面活性剤として
、接触角・表面張力を下げない低起泡性の分散剤・界面
活性剤を選択する必要がある。As a dispersant/surfactant for imparting dispersion stability, it is necessary to select a low foaming dispersant/surfactant that does not lower the contact angle or surface tension.
本発明に用いる溶媒は、イオン交換水、接触角・表面張
力を下げない保湿剤としての水溶性有機溶剤として表面
張力が４０ ｄ ｙ ｎ ｅ ／ ｃ ｍ以上の炭素数
１〜４のアルキルアルコール類、ケトンまたはケトアル
コール類、エーテル類、ポリアルキレングリコール類、
アルキレン基が２〜６個の炭素原子を含むアルキレング
リコール類、グリセリン、多価アルコールの低級アルキ
ルエーテル、Ｎ−メチル−２−ピロリドン、トリエタノ
ールアミン、１．３−ジメチル−２−イミダゾリジノン
等が用いられるが、これに限定される物ではない。Solvents used in the present invention include ion-exchanged water, alkyl alcohols having 1 to 4 carbon atoms and having a surface tension of 40 dyne/cm or more as a water-soluble organic solvent as a humectant that does not lower the contact angle or surface tension. , ketone or keto alcohols, ethers, polyalkylene glycols,
Alkylene glycols in which the alkylene group has 2 to 6 carbon atoms, glycerin, lower alkyl ether of polyhydric alcohol, N-methyl-2-pyrrolidone, triethanolamine, 1,3-dimethyl-2-imidazolidinone, etc. is used, but is not limited to this.
本発明の基本構成は以上の通りであるが、従来公知の分
散剤、界面活性剤、粘度調整剤、表面張力調整剤、比抵
抗調整剤、ｐＨ調整剤、防カビ剤、浸透剤、キレート化
剤等を被転写体上での接触角が７５度以上で、２０℃に
おける表面張力が４２ｄ ｙ ｎ ｅ ／ ｃ ｍ以上
に保ちながら必要に応じて添加することができる。The basic structure of the present invention is as described above, but conventionally known dispersants, surfactants, viscosity modifiers, surface tension modifiers, resistivity modifiers, pH modifiers, fungicides, penetrants, chelating agents, etc. Agents and the like can be added as necessary while maintaining a contact angle of 75 degrees or more on the transfer target and a surface tension of 42 dyne/cm or more at 20°C.
インク物性としては、動作時の温度を０℃〜５０℃に設
定した場合におけるインク粘度は、ヘッドの高速応答下
におけるインクの供給の安定性及びインクの液滴飛翔安
定性・周波数特性を考慮すると吐出ノズル近傍において
２０ｍＰａ−５以下が必要であり、さらに高速応答性実
現のためには１．５〜１０ｍＰａ−５がより好ましい。Regarding ink physical properties, the ink viscosity when the operating temperature is set between 0℃ and 50℃ is determined by considering the stability of ink supply under high-speed response of the head, and the flight stability and frequency characteristics of ink droplets. 20 mPa-5 or less is required near the discharge nozzle, and more preferably 1.5 to 10 mPa-5 in order to realize high-speed response.
又、本発明のインクジェット記録用インクは、必要によ
り熱風・加熱ロール・赤外線等の熱定着手段により乾燥
・定着させ、より一層の速乾性を付与することもできる
。Further, the inkjet recording ink of the present invention can be dried and fixed by a heat fixing means such as hot air, a heated roll, or infrared rays, if necessary, to impart even faster drying properties.
更に、本発明のインクジェット記録用インクは、第２図
に示すように、従来のオンデマンドタイプのインク溜一
部を形成する容器に信号により変形する圧電素子を設け
、変形時に生じる圧力によりインクを液適として飛翔さ
せるインクジェット方式、第３図に示すように、熱エネ
ルギーの作用によるインクの急激な体積変化を利用した
バブルジェット方式、第４図に示すように、超音波等に
よりミストを発生させるインクミスト方式、第５図に示
すように、インク溜部内にノズルに対向させて圧電素子
を配設し、この圧電素子の収縮によりインク滴を飛翔さ
せるインクジェット方式に使用することができ、より好
適には、１０ｍ／ｓ以上の高吐出スピードで１ドツト当
り０．１μｇ以下のマイクロドツトを飛翔可能な記録方
法によれば、本発明の記録インクを高速で被転写体に衝
突させることができるために少量で必要なドツト径を得
ることができ、第６図（ａ）に示すように、通常のイン
クドツト（第６図（ｂ））に比べ、体積の減量、表面積
の坩加により、速乾性を向上させることができ、にじみ
を完全に防止することができる。Furthermore, as shown in FIG. 2, the inkjet recording ink of the present invention is provided with a piezoelectric element that deforms in response to a signal in a container forming a portion of a conventional on-demand type ink reservoir, and the ink is deformed by the pressure generated during deformation. The inkjet method uses ink to fly as a droplet, the bubble jet method uses rapid volume changes in ink due to the action of thermal energy, as shown in Figure 3, and the mist is generated using ultrasonic waves, etc., as shown in Figure 4. The ink mist method, as shown in FIG. 5, can be used in the inkjet method, in which a piezoelectric element is disposed in the ink reservoir so as to face the nozzle, and the ink droplets are ejected by the contraction of the piezoelectric element, which is more suitable. According to a recording method capable of ejecting microdots of 0.1 μg or less per dot at a high ejection speed of 10 m/s or more, the recording ink of the present invention can be made to collide with the transfer target at high speed. The required dot diameter can be obtained with a small amount, and as shown in Figure 6 (a), compared to normal ink dots (Figure 6 (b)), the volume is reduced and the surface area is increased, resulting in quick drying. can be improved, and bleeding can be completely prevented.
以下、実施例・比較例を挙げることにより本発明を具体
的に説明するが、本例が本発明を限定するものではない
。Hereinafter, the present invention will be specifically explained by giving Examples and Comparative Examples, but these Examples do not limit the present invention.
実施例
表１に示すインク組成、表２に示すインク物性のインク
ジェット記録用インクを試作し、実施例、比較例とした
。Examples Inkjet recording inks having the ink composition shown in Table 1 and the ink physical properties shown in Table 2 were prototyped and used as Examples and Comparative Examples.
表１のインクジェット記録用インクを用い、記録方法と
して、第７図に示した圧電材料と導電材料をそれぞれ層
状に交互に積層した圧電素子を配列してなる圧電素子列
を、一端を固定して、他端を自由端としてノズル開口に
対向させた試作ヘッドを用い、一般上質紙、ボンド紙、
ＰＰＣ用紙、再生紙、一般○ＨＰシートの各種被転写体
に対して文字、グラフィック等を印字し、以下の評価を
行った。Using the inkjet recording ink shown in Table 1, as a recording method, a piezoelectric element array consisting of piezoelectric elements arranged in alternate layers of piezoelectric material and conductive material shown in FIG. 7 is fixed at one end. , using a prototype head with the other end facing the nozzle opening as a free end, to print general high-quality paper, bond paper,
Characters, graphics, etc. were printed on various transfer materials such as PPC paper, recycled paper, and general HP sheets, and the following evaluations were performed.
評価方法を下記に示す。The evaluation method is shown below.
１、にじみ評価
顕微鏡による１００倍、４００倍での観察と目視による
観察
＠：織繊維沿ったにじみもなく繊維上にドツトが保持さ
れている
○：織繊維沿ったにじみは少しあるが目視ではわからな
い
Δ：目視で若干にじみがわかる
×：かなりにじんで、エツジがギザギザしている２、吐
出安定性
インクジェット記録装置にインクを充填し、印字
＠：３時間以上問題なく印字可能
Ｏ：１時間以上３時間未満問題なく印字可能Ｘ：１時間
未満でドツトずれが生じる
３、記録温度
マクベス温度計による反射０・Ｄ値の測定４、光沢度評
価
デジタル光沢計（村上色彩技術研究新製）による７５度
鏡面光沢度の測定
０２８０以上
△：５１〜７９
×：５０以下
５．０ＨＰシートへの記録
Ｏ：記録可
×：記録不可
インク物性調査方法を以下に示す。1. Bleeding evaluation Observation using a microscope at 100x and 400x magnification and visual observation @: Dots are retained on the fibers without any bleeding along the woven fibers ○: There is some bleeding along the woven fibers, but it cannot be seen visually. Δ: Slight bleeding is visible with the naked eye ×: Significant bleeding and jagged edges 2, Ejection stability When the inkjet recording device is filled with ink, printing @: Can be printed for more than 3 hours without problems O: More than 1 hour 3 Can be printed without problems for less than an hour Measurement of specular gloss: 0280 or more △: 51 to 79 ×: 50 or less 5.0 Recording on HP sheet O: Recordable ×: Recordable The ink physical property investigation method is shown below.
Ａ、粘度
レオメトリックス・ファーイースト社製フルード・スペ
クトロメーターによる２０℃での定常粘度測定
Ｂ１表面張力
表面張力計による測定
（協和界面科学製）
Ｃ８接触角
自動接触角計（ＣＺ−Ａ型）
（協和界面科学製）
以上の評価結果を表３に示す。A. Steady viscosity measurement at 20°C using a fluid spectrometer manufactured by Viscosity Rheometrics Far East Co., Ltd. B1 Surface tension measurement using a surface tension meter (manufactured by Kyowa Interface Science) C8 Contact angle automatic contact angle meter (CZ-A type) ( (manufactured by Kyowa Interface Science) The above evaluation results are shown in Table 3.
表３より明らかなように、実施例１〜５の記録インクは
、印字品質（にじみ、湯度、光沢）、吐出安定性につい
て、比較例に比べ、極めて優れた結果が得られた。As is clear from Table 3, the recording inks of Examples 1 to 5 gave extremely superior results in terms of printing quality (bleeding, hot water content, gloss) and ejection stability compared to the comparative example.
［発明の効果コ
以上説明したように、本発明のインクジェット記録用イ
ンクによれば、少なくとも水と着色剤からなり、記録液
滴と被転写体との初期接触角が７５度以上で、かつ２０
℃における表面張力が４０ｄ ｙ ｎ ｅ ／ ｃ ｍ
以上で、染料及び／又は顔料を３重量％〜１０重量％含
有することにより、あらゆる被転写体に対して、にじま
ず、高温度で鮮明な記録を可能にするという効果を有す
る。[Effects of the Invention] As explained above, the inkjet recording ink of the present invention is composed of at least water and a colorant, and the initial contact angle between the recording droplet and the transfer target is 75 degrees or more, and
The surface tension at °C is 40 d yne/cm
As described above, by containing the dye and/or pigment in an amount of 3% to 10% by weight, it has the effect of enabling clear recording at high temperatures without smearing on any transfer material.
又、本発明のインクジェット記録用インクによれば、通
常のインクジェット記録では使用できない一般ＯＨＰシ
ートにも、高品位な印字が可能であるという効果も有量
る。Furthermore, the inkjet recording ink of the present invention has a significant effect in that high-quality printing is possible even on general OHP sheets that cannot be used in ordinary inkjet recording.
更に、本発明のインクジェット記録用インクは、インク
の表面張力が高いため、インクメニスカスの戻りが速く
なるため、ヘッドの周波数特性が良くなるという効果を
有する。Furthermore, since the ink for inkjet recording of the present invention has a high surface tension, the ink meniscus returns quickly, so that it has the effect of improving the frequency characteristics of the head.
更に、インク粒子がまとまりやすいため、サテライト粒
子が発生せず、吐出応答性に優れているという効果を有
する。Furthermore, since the ink particles are easily aggregated, satellite particles are not generated, and the ink has the effect that the ejection response is excellent.
第１図は、本発明による被転写体上のインクドツトを示
す模式図。
第２図は、本発明に用いる圧電素子制御方式の記録ヘッ
ドを示す平面図。
第３図は、本発明に用いるバブルジェット制御方式の記
録ヘッドを示す平面図。
第４図は、本発明に用いるインクミスト記録方式の概略
図。
第５図は、本発明に用いる他の圧電制御方式の記録ヘッ
ドを示す平面図。
第６図（ａ）は、本発明のインクジェット記録用インク
を高速で被転写体に付着させた時のインクドツトを示す
断面図。
第６図（ｂ）は、本発明のインクジェット記録用インク
の通常のインクドツトを示す断面図。
第７図は、本発明に用いる圧電制御方式の記録ヘッドの
実施例を示す断面図。
１・・・圧力室
２・・・圧電素子
３・・・金属板
４・・・インク供給バイブ
５・・・基板
６・・・ノズル形成基板
７・・・インク供給バイブ
８・・・発熱体
９・・・気泡
１０・・・プラテン
１１・・・被転写体
１２・・・インクミスト
１３・・・ゲート電圧
１４・・・アパーチャー
１５・・・イオン
１６・・・コロナ電極
１７・・・ノズル形成基板
１８・・・ノズル
１９・・・圧電素子
２０・・・金属板
２１・・・圧電変換器
２２・・・電源
２３・・・インク
２４・・・ノズル形成基板
２５・・・ノズル
２６・・・圧電素子
２７・・・接着剤もしくは樹脂
２８・・・支柱
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（化１名）第３図
第４図
第５図FIG. 1 is a schematic diagram showing ink dots on a transfer target according to the present invention. FIG. 2 is a plan view showing a piezoelectric element control type recording head used in the present invention. FIG. 3 is a plan view showing a bubble jet control type recording head used in the present invention. FIG. 4 is a schematic diagram of an ink mist recording method used in the present invention. FIG. 5 is a plan view showing another piezoelectric control type recording head used in the present invention. FIG. 6(a) is a cross-sectional view showing ink dots when the inkjet recording ink of the present invention is adhered to a transfer target at high speed. FIG. 6(b) is a sectional view showing a typical ink dot of the inkjet recording ink of the present invention. FIG. 7 is a sectional view showing an embodiment of a piezoelectric control recording head used in the present invention. 1... Pressure chamber 2... Piezoelectric element 3... Metal plate 4... Ink supply vibrator 5... Substrate 6... Nozzle forming substrate 7... Ink supply vibe 8... Heating element 9... Bubbles 10... Platen 11... Transferred object 12... Ink mist 13... Gate voltage 14... Aperture 15... Ion 16... Corona electrode 17... Nozzle Forming substrate 18... Nozzle 19... Piezoelectric element 20... Metal plate 21... Piezoelectric transducer 22... Power supply 23... Ink 24... Nozzle forming substrate 25... Nozzle 26... ...Piezoelectric element 27...Adhesive or resin 28...Strut and above Applicant: Seiko Epson Co., Ltd. Agent Patent attorney: Kizobe Suzuki (1 person) Figure 3 Figure 4 Figure 5
Claims (1)
ジェット記録用インクにおいて、水と着色成分を含有し
、被転写体との初期接触角が７５度以上で、かつ２０℃
における表面張力が４２ｄｙｎｅ／ｃｍ以上であること
を特徴とするインクジェット記録用インク。（２）前記
着色成分として染料及び／又は顔料を３重量％〜１０重
量％含有することを特徴とする請求項１記載のインクジ
ェット記録用インク。(1) Inkjet recording ink for recording characters and images using liquid ink, which contains water and coloring components, has an initial contact angle with the transfer target of 75 degrees or more, and has a temperature of 20°C.
An inkjet recording ink having a surface tension of 42 dyne/cm or more. (2) The inkjet recording ink according to claim 1, characterized in that the coloring component contains 3% to 10% by weight of a dye and/or a pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29769090A JP3047452B2 (en) | 1990-11-02 | 1990-11-02 | Inkjet recording ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29769090A JP3047452B2 (en) | 1990-11-02 | 1990-11-02 | Inkjet recording ink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04170478A true JPH04170478A (en) | 1992-06-18 |
| JP3047452B2 JP3047452B2 (en) | 2000-05-29 |
Family
ID=17849895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29769090A Expired - Lifetime JP3047452B2 (en) | 1990-11-02 | 1990-11-02 | Inkjet recording ink |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047452B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594081A2 (en) * | 1992-10-21 | 1994-04-27 | Canon Kabushiki Kaisha | Ink, ink jet recording method using the same and recording equipment containing the ink |
| WO1999012395A1 (en) * | 1997-09-02 | 1999-03-11 | Seiko Epson Corporation | Method of producing organic el element and organic el element |
| US6929689B2 (en) | 2002-04-30 | 2005-08-16 | Sharp Kabushiki Kaisha | Ink for inkjet recording |
| JP2006152270A (en) * | 2004-11-02 | 2006-06-15 | Kao Corp | Water-based ink for use in ink-jet recording |
-
1990
- 1990-11-02 JP JP29769090A patent/JP3047452B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594081A2 (en) * | 1992-10-21 | 1994-04-27 | Canon Kabushiki Kaisha | Ink, ink jet recording method using the same and recording equipment containing the ink |
| EP0594081A3 (en) * | 1992-10-21 | 1995-01-11 | Canon Kk | Ink, ink jet recording method using the same and recording equipment containing the ink. |
| US5849815A (en) * | 1992-10-21 | 1998-12-15 | Canon Kabushiki Kaisha | Ink, ink jet recording method using the same and recording equipment containing the ink |
| WO1999012395A1 (en) * | 1997-09-02 | 1999-03-11 | Seiko Epson Corporation | Method of producing organic el element and organic el element |
| US6929689B2 (en) | 2002-04-30 | 2005-08-16 | Sharp Kabushiki Kaisha | Ink for inkjet recording |
| JP2006152270A (en) * | 2004-11-02 | 2006-06-15 | Kao Corp | Water-based ink for use in ink-jet recording |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3047452B2 (en) | 2000-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0787596B1 (en) | Ink-jet printing process, apparatus and materials | |
| CN101204877B (en) | Inkjet recording method and recorded matter | |
| JP3033093B2 (en) | Image recording ink and image recording method | |
| JP2867491B2 (en) | Image recording ink | |
| US4965609A (en) | Jet recording method using ink with viscosity of at least 2cp which is heated to lower the viscosity thereof to below 2cp before jetting | |
| CN101220227A (en) | Pigment dispersion, ink composition, inkset, and recording device | |
| US20100189902A1 (en) | Ink jet recording ink, ink jet image-forming method and ink jet recording apparatus | |
| GB2140020A (en) | Recording liquid | |
| JPH09286941A (en) | Ink for ink jet-recording and recording method | |
| JP2008019287A (en) | Recording liquid | |
| JP5930176B2 (en) | Ink for inkjet recording | |
| DE68910844T2 (en) | Thermally reversible sol-gel phase change ink or ink for pulse inkjet printing. | |
| EP0412548B1 (en) | Image recording ink composition and method of using same | |
| JPH04170478A (en) | Ink for ink jet recording | |
| JP2020019843A (en) | Ink, ink storage container and inkjet recording device | |
| JP2675825B2 (en) | Inkjet recording method | |
| JP2001039006A (en) | Recording method and recorded matter recorded thereby | |
| JPH04169269A (en) | Ink jet printing method | |
| CN100402295C (en) | Ink jet recording method and ink jet recording apparatus | |
| JP2006116794A (en) | Inkjet recording method and inkjet printer employing the same | |
| JP2005162899A (en) | Ink for inkjet recording and recording method | |
| JP3047435B2 (en) | Image recording ink | |
| JP3097103B2 (en) | Manufacturing method of recording ink | |
| JPH04235042A (en) | Ink jet recording method | |
| JPH04170477A (en) | Ink for ink jet recording |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080324 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090324 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090324 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100324 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100324 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110324 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110324 Year of fee payment: 11 |