JPH0212266B2 - - Google Patents
Info
- Publication number
- JPH0212266B2 JPH0212266B2 JP56059535A JP5953581A JPH0212266B2 JP H0212266 B2 JPH0212266 B2 JP H0212266B2 JP 56059535 A JP56059535 A JP 56059535A JP 5953581 A JP5953581 A JP 5953581A JP H0212266 B2 JPH0212266 B2 JP H0212266B2
- Authority
- JP
- Japan
- Prior art keywords
- ink
- water
- jet printing
- viscosity
- dye
- 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
- 238000007639 printing Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000080 wetting agent Substances 0.000 claims description 10
- 239000003429 antifungal agent Substances 0.000 claims description 7
- 229940121375 antifungal agent Drugs 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 230000000855 fungicidal effect Effects 0.000 claims description 6
- 239000000417 fungicide Substances 0.000 claims description 6
- XDILZEPJCPEDLT-UHFFFAOYSA-N [Na].[O-][N+]1=CC=CC=C1S Chemical compound [Na].[O-][N+]1=CC=CC=C1S XDILZEPJCPEDLT-UHFFFAOYSA-N 0.000 claims description 3
- 239000000976 ink Substances 0.000 description 44
- 239000000975 dye Substances 0.000 description 24
- 239000011734 sodium Substances 0.000 description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- 229920001223 polyethylene glycol Polymers 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000002738 chelating agent Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical class [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 2
- 101100014485 Arabidopsis thaliana GLL22 gene Proteins 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000005185 salting out Methods 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- 239000010981 turquoise Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000083869 Polyommatus dorylas Species 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- XNRNJIIJLOFJEK-UHFFFAOYSA-N sodium;1-oxidopyridine-2-thione Chemical compound [Na+].[O-]N1C=CC=CC1=S XNRNJIIJLOFJEK-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- YXZRCLVVNRLPTP-UHFFFAOYSA-J turquoise blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Cu+2].NC1=NC(Cl)=NC(NC=2C=C(NS(=O)(=O)C3=CC=4C(=C5NC=4NC=4[N-]C(=C6C=CC(=CC6=4)S([O-])(=O)=O)NC=4NC(=C6C=C(C=CC6=4)S([O-])(=O)=O)NC=4[N-]C(=C6C=CC(=CC6=4)S([O-])(=O)=O)N5)C=C3)C(=CC=2)S([O-])(=O)=O)=N1 YXZRCLVVNRLPTP-UHFFFAOYSA-J 0.000 description 1
- DKBXPLYSDKSFEQ-UHFFFAOYSA-L turquoise gll Chemical compound [Na+].[Na+].[Cu+2].N1=C(N=C2[N-]3)[C]4C(S(=O)(=O)[O-])=CC=CC4=C1N=C([N-]1)C4=CC=CC(S([O-])(=O)=O)=C4C1=NC(C=1C4=CC=CC=1)=NC4=NC3=C1[C]2C=CC=C1 DKBXPLYSDKSFEQ-UHFFFAOYSA-L 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
【発明の詳細な説明】
本発明はジエツト印刷用水性インキの改良に係
り、特にジエツト印刷機のフイルタ及びノズル部
で目詰りをおこすことなく長期間の連続循環噴射
が可能なジエツト印刷用水性インキを提供せんと
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of water-based inks for jet printing, and particularly to water-based inks for jet printing that can be sprayed in continuous circulation over a long period of time without clogging the filters and nozzles of jet printing machines. We aim to provide the following.
一般にジエツト印刷方式におけるインキは直径
が20〜100μｍの如く微細なノズルオリフイスか
ら噴射する。従つてこのノズルオリフイスは僅か
な不溶固形物の付着によつても目詰りをおこして
円滑なインキの噴射をさまたげているものであ
る。又異物がオリフイスに到達しないようにイン
キ流路途中においてフイルタを挿入することがあ
るが一定限度以上のフイルタ目詰りもインキ噴射
圧に影響をあたえる。従つてジエツト印刷用イン
キにはその重要な特性としてインキを長期噴射す
るも優れた安定性が要求されるものである。また
ジエツト印刷用インキには更に重要な特性として
均一粒径のインキ粒子により形成されることが要
求される。この均一粒径のインキ粒子を形成する
にはインキの粘度、表面張力及び電導度等が重要
な因子となり、例えば荷電量制御形のジエツト印
刷機用インキとしては常温で3cP以下の粘度、
40dyne／cm以上の表面張力及び１〜10ｍｓ／cm
の電導度を有することが好ましい。 Generally, ink in jet printing is ejected from a fine nozzle orifice with a diameter of 20 to 100 μm. Therefore, the nozzle orifice can become clogged even with the slightest amount of undissolved solid matter adhering to it, thereby interfering with smooth ink jetting. In addition, a filter is sometimes inserted in the ink flow path to prevent foreign matter from reaching the orifice, but even if the filter becomes clogged beyond a certain limit, it also affects the ink injection pressure. Therefore, an important characteristic of jet printing inks is that they must have excellent stability during long-term jetting. Another important characteristic of jet printing ink is that it is formed of ink particles of uniform particle size. To form ink particles with a uniform particle size, the viscosity, surface tension, and conductivity of the ink are important factors.For example, ink for charge control type jet printing machines has a viscosity of 3 cP or less at room temperature,
Surface tension of 40dyne/cm or more and 1 to 10ms/cm
It is preferable to have an electrical conductivity of .
従来噴射を中断放置した際にノズル部内に残留
したインキが乾燥固化して引起すノズルの目詰り
をグリコール系湿潤剤の添加により防止した水性
インキが知られている。一方着色成分としては記
録後の耐水性及び耐光性のよい染料が望ましいと
されていた。就中水に対する親和性を大きくする
効果のあるスルホン酸基を含有する直後染料が溶
解性の点から望ましいものである。然しながらス
ルホン酸基含有染料は水溶液中で会合をおこし易
い傾向があり、その結果長時間の燥り返し回収使
用中又は噴射中断時における温度又は共存塩類濃
度の変化が原因となつてインキ液粘度もしくはフ
イルタ部通過抵抗の増大がおこり、インキ粒子の
不揃い、偏向角異状、記録画像の解像低下等をも
たらす欠点があつた。この欠点は防黴剤として２
−ピリジンチオール−１−オキサイドナトリウム
塩（ソジウムオマジン）を使用する場合は特に問
題となつていた。 BACKGROUND ART Water-based inks are known in which the addition of a glycol-based wetting agent prevents nozzle clogging caused by drying and solidification of ink remaining in the nozzle portion when jetting is interrupted and left undisturbed. On the other hand, as the coloring component, dyes with good water resistance and light resistance after recording were considered desirable. Among these, immediate dyes containing sulfonic acid groups, which have the effect of increasing affinity for water, are desirable from the viewpoint of solubility. However, sulfonic acid group-containing dyes tend to aggregate in aqueous solutions, and as a result, changes in temperature or coexisting salt concentration during long-term drying and recovery use or during jetting interruptions can cause changes in ink liquid viscosity or This increases the resistance to pass through the filter, resulting in irregularities in ink particles, irregularities in deflection angle, and decreased resolution of recorded images. This drawback is that as a fungicide,
-Pyridinethiol-1-oxide sodium salt (sodium omazine) was particularly problematic.
本発明はこれらの欠点を改善せんとして鋭意研
究を行つた結果、長期安定して記録保存性のよい
ジエツト印刷用水性インキを見出したものであ
る。即ち本発明は水溶性染料、防黴剤及び湿潤剤
を水に溶解してなるジエツト印刷用水性インキに
おいて、水溶性塗料は下記構造式を示し且つイン
キ中の無機性不純物の含有量が0.5重量％以下で
あり、
（ただしｎ＝２〜４の整数）
又防黴剤は２−ピリジンチオール−１−オキサイ
ドナトリウム塩からなるものである。 The present invention has been made as a result of extensive research aimed at improving these drawbacks, and has resulted in the discovery of a water-based ink for jet printing that is stable over a long period of time and has good record storage properties. That is, the present invention provides a water-based jet printing ink prepared by dissolving a water-soluble dye, a fungicide, and a wetting agent in water, wherein the water-soluble paint has the following structural formula and the content of inorganic impurities in the ink is 0.5% by weight. % or less, (However, n=an integer of 2 to 4) The antifungal agent is composed of 2-pyridinethiol-1-oxide sodium salt.
而して上記の構造式を有する水溶性染料とし
て、特に好ましい染料としてはC.I.Direct blue
86が挙げられ、市販品としては、例えばAizen
Primula Turquoise Blue GLH（保土谷化学）、
Kayarus Turquoise Blue GL（日本化薬）、
Sumilight Supra Turquiore Blue G.Cone（住友
化学）等として市販され、耐光性、耐水性に優れ
ている。本発明者等はこの染料が後述する湿潤剤
であるポリエチレングリコールにもよく溶解し且
つ防黴剤のソジウムオマジンとも化学反応をおこ
さない安定な染料であることを確認した。 A particularly preferred water-soluble dye having the above structural formula is CIDirect blue.
86, and commercially available products include Aizen
Primula Turquoise Blue GLH (Hodogaya Chemical),
Kayarus Turquoise Blue GL (Nippon Kayaku),
It is commercially available as Sumilight Supra Turquiore Blue G.Cone (Sumitomo Chemical) and has excellent light resistance and water resistance. The present inventors have confirmed that this dye is a stable dye that dissolves well in polyethylene glycol, which is a wetting agent to be described later, and does not chemically react with sodium omazine, a fungicide.
然しながらインキ配合後、粘度測定を行つたと
ころ第１図に示す如く非ニユートン粘度がみら
れ、放置、乾燥によりそれが更に顕著になること
が認められた。これは染料の会合が当初より存在
し、放置、乾燥と共に進行することを意味し、事
実インキとしての長期噴射安定性に問題を生じ
た。 However, when the viscosity was measured after the ink was formulated, non-Newtonian viscosity was observed as shown in FIG. 1, and it was observed that this became more pronounced as the ink was left to stand and dry. This means that the dye association exists from the beginning and progresses as the ink is left to stand and dries, which actually caused problems in the long-term jetting stability of the ink.
而して上記の市販染料は染色用のものであり、
例えばこれらの染料に含まれるNa2SO4のような
無機化合物を熱重量分析により灰分として検出し
た結果、50％以上含有していることを確認した。
この際染料中の銅原子、スルホン基も灰分として
残るため補正して無機性不樹物含量を求めた。し
かしこれを例えば水−エタノール再結晶法や酢酸
ソーダ塩析法のような精製操作により無機性不純
物を15重量％以下にすることが出来た。そこで無
機性不純物含量を４％に精製した上記の染料につ
いて２％の水溶液及びこれに更に２％塩化ナトリ
ウムを添加したものの粘度を測定したところ第２
図に示す結果を得た。この結果より上記染料は共
存無機塩が多ければ会合し、共存無機塩が少けれ
ば会合しないことを確認することができた。 Therefore, the above commercially available dyes are for dyeing,
For example, as a result of detecting inorganic compounds such as Na 2 SO 4 contained in these dyes as ash by thermogravimetric analysis, it was confirmed that they contained 50% or more.
At this time, since the copper atoms and sulfone groups in the dye also remained as ash, the content of inorganic inorganic substances was determined by correcting them. However, by purification operations such as water-ethanol recrystallization and sodium acetate salting-out, it was possible to reduce the inorganic impurities to 15% by weight or less. Therefore, we measured the viscosity of a 2% aqueous solution of the above dye purified to a 4% inorganic impurity content and an additional 2% sodium chloride solution.
The results shown in the figure were obtained. From this result, it was confirmed that the above-mentioned dye associates when there is a large amount of coexisting inorganic salt, and does not associate when there is a small amount of coexisting inorganic salt.
又本発明においてインキの防黴剤として２−ピ
リジンチオール−１−オキサイドナトリウム塩
（ソジウムオマジン）を使用するが、これは他の
防黴剤に比して人体に対する影響がないのみなら
ず防黴性が極めて高いため塩添加による染料会合
効率を少くすることが可能である。なおその添加
量は0.05〜0.5重量％が望ましく、0.05重量％未満
ではその効果が薄く、且つ0.5重量％を越えても
それ程顕著にあらわれないためである。 Furthermore, in the present invention, 2-pyridinethiol-1-oxide sodium salt (sodium omadine) is used as a fungicide for the ink, which not only has no effect on the human body compared to other fungicide, but also has a high antifungal property. Since this is extremely high, it is possible to reduce the dye association efficiency due to salt addition. The amount added is preferably 0.05 to 0.5% by weight, because if it is less than 0.05% by weight, the effect will be weak, and if it exceeds 0.5% by weight, it will not be so noticeable.
又湿潤剤としてはエチレングリコール、グリセ
リン、ジエチレングリコール又はそれにより高分
子量のポリエチレングリコールが使用されるが、
特にPEG＃200、PEG＃300が吸湿性、低蒸発性
及び顔料溶解性の点から好ましい。その添加量は
10〜30重量％でよく、10％未満では吸湿性に乏し
く十分な湿潤効果がえられず又30％を越えると粘
度を不当に高めるためおもわしくない。 Ethylene glycol, glycerin, diethylene glycol, or higher molecular weight polyethylene glycol is used as a wetting agent.
In particular, PEG #200 and PEG #300 are preferred from the viewpoints of hygroscopicity, low evaporation, and pigment solubility. The amount added is
The amount may be 10 to 30% by weight; if it is less than 10%, it will have poor hygroscopicity and a sufficient wetting effect will not be obtained, and if it exceeds 30%, it will undesirably increase the viscosity.
更にキレート剤を添加することによりインキが
大気中のカルシウム粉等を吸収して不溶塩を生成
したりソジウムオマジンが重金属シオンと不溶性
キレートを生成することを防ぐ意味で効果があ
る。 Furthermore, the addition of a chelating agent is effective in preventing the ink from absorbing calcium powder etc. in the atmosphere to form insoluble salts and preventing sodium omazine from forming insoluble chelates with heavy metal ions.
次に本発明の実施例について説明する。 Next, examples of the present invention will be described.
実施例 １
染料：酢酸ソーダ塩析法により無機性不純物含量
４％に精製したC.I.Direct Blue 86
……3.0重量％
防黴剤：ソジウムオマジン ……0.3 〃
湿潤剤：PEG＃300 ……15.0 〃
キレート剤：EDTAナトリウム塩 ……0.1 〃
溶媒：水 ……残部
上記組成物を均一に溶解した後、0.5μのミリポ
アフイルタで過してジエツト記録用インキを調
整した。このインキは粘度2.30c.P、表面張力
45dyne／cm、電導度5.0ｍｓ／cmの特性を示した。Example 1 Dye: CIDirect Blue 86 purified to 4% inorganic impurity content by sodium acetate salting out method
...3.0% by weight Antifungal agent: Sodium Omazine ...0.3 Wetting agent: PEG #300 ...15.0 Chelating agent: EDTA sodium salt ...0.1 Solvent: Water ...Remainder After uniformly dissolving the above composition, The jet recording ink was prepared by passing it through a 0.5μ Millipore filter. This ink has a viscosity of 2.30cP and a surface tension of
It exhibited characteristics of 45dyne/cm and conductivity of 5.0ms/cm.
このインキをノズルオリフイス径30μのジエツ
ト印刷機を用いて噴射試験を行い、3000時間以上
の噴射安定性を確認した。又このインキをサンプ
ル管に入れ開栓状態で６ケ月放置乾燥させたが不
溶固形物の発生は全く見られなかつた。 A jetting test was conducted on this ink using a jet printing machine with a nozzle orifice diameter of 30μ, and jetting stability was confirmed for over 3000 hours. This ink was placed in a sample tube and allowed to dry for 6 months with the cap open, but no insoluble solid matter was observed.
実施例 ２
染料：水−エタノール再結晶法により無機性不純
物含量15％に精製したC.I.Direct Blue 86
……2.5重量％
防黴剤：ソジウムオマジン ……0.1 〃
湿潤剤：PEG＃200 ……11.0 〃
キレート剤：EDTAナトリウム塩 ……0.1 〃
溶媒：水 ……残部
上記組成物を実施例１と同様の方法にてジエツ
ト印刷用インキに調整した。このインキの粘度は
1.6c.P、表面張力54dyne／cm、電導度5.7ｍｓ／
cmの特性を示し、実施例１と同様に噴射試験及び
乾燥試験を行つたが3000時間以上の噴射、６ケ月
放置にて何等不溶固形物を発生しなかつた。Example 2 Dye: CIDirect Blue 86 purified to 15% inorganic impurity content by water-ethanol recrystallization method
...2.5% by weight Antifungal agent: Sodium Omazine ...0.1 Wetting agent: PEG #200 ...11.0 Chelating agent: EDTA sodium salt ...0.1 Solvent: Water ...Remainder The above composition was prepared in the same manner as in Example 1. The method was used to prepare an ink for jet printing. The viscosity of this ink is
1.6cP, surface tension 54dyne/cm, conductivity 5.7ms/
The spraying test and drying test were conducted in the same manner as in Example 1, but no insoluble solids were generated after spraying for more than 3,000 hours and standing for 6 months.
比較例 １
染料：水−エタノール再生法により精製した無機
性不純物含量９％のC.I.Direct Blue ２（アゾ
系染料） ……1.8重量％
防黴剤：ソジウムオマジン ……0.3 〃
湿潤剤：PEG＃200 ……15 〃
キレート剤：EDTAナトリウム塩 ……0.1 〃
溶媒：水 ……残部
上記組成物を実施例１と同様の方法にてジエツ
ト印刷用インキを調整した。このインキの粘度は
当初1.8C.Pであつたが、サンプル管に入れ開栓状
態で２週間経過したところ10C.P.以上に上昇しゲ
ル状態に変つた。これは染料がソジウムオマジン
によつて会合することが認められた。Comparative Example 1 Dye: CIDirect Blue 2 (azo dye) with 9% inorganic impurity content purified by water-ethanol regeneration method...1.8% by weight Antifungal agent: Sodium Omazine...0.3 Wetting agent: PEG#200... 15 Chelating agent: EDTA sodium salt...0.1 Solvent: Water...Remainder A jet printing ink was prepared from the above composition in the same manner as in Example 1. The viscosity of this ink was initially 1.8 C.P., but when it was placed in a sample tube and left open for two weeks, it rose to over 10 C.P. and turned into a gel state. It was observed that the dye was associated with sodium omazine.
比較例 ２
染料：添加塩約56重量％を含有するC.I.Direct
Blue 86（商品名Chlorantine Fast Turquoise
Blue GLL22％、Ciba社製） ……2.9重量％
防黴剤：ジヒドロ酢酸ナトリウム ……0.3 〃
湿潤剤：PEG＃300 ……15.0 〃
溶媒：水 ……残部
上記組成物を実施例１と同様の方法にてジエツ
ト印刷用インキに調整した。このインキは粘度
2.5C.P、表面張力45dyne／cm、電導度5.2ｍｓ／
cmの特性を示した。又このインキをサンプル管に
入れ、開栓状態で２週間放置後粘度を測定したと
ころ非ニユートン粘性を示しており、10sec-1以
下のずり速度においては10CP以上となつていた。
又このインクをノズルオリフイス径30μのジエツ
ト印刷機を用いて噴射試験を行つたところ約12時
間でフイルタ及びノズルに目詰りを生じ噴射不能
になつた。Comparative Example 2 Dye: CIDirect containing about 56% by weight of added salt
Blue 86 (Product name: Chlorantine Fast Turquoise)
Blue GLL22%, manufactured by Ciba)...2.9% by weight Antifungal agent: Sodium dihydroacetate...0.3 Wetting agent: PEG#300...15.0 Solvent: Water...Remainder The above composition was prepared in the same manner as in Example 1. The method was used to prepare an ink for jet printing. This ink has a viscosity of
2.5CP, surface tension 45dyne/cm, conductivity 5.2ms/
The characteristics of cm were shown. When this ink was placed in a sample tube and left open for two weeks, the viscosity was measured, and it showed non-Newtonian viscosity, with a shear rate of 10 CP or more at a shear rate of 10 sec -1 or less.
When this ink was tested in a jet printing machine with a nozzle orifice diameter of 30 microns, the filter and nozzle became clogged in about 12 hours, making jetting impossible.
比較例 ３
染料：添加塩約56重量％を含有するC.I.Direct
Blue 86（商品名Chlorantine Fast Turquoise
Blue GLL22％、Ciba社製） ……2.9重量％
防黴剤：ソジウムオマジン ……0.3重量％
湿潤剤：PEG＃300 ……15.0重量％
キレート剤：EDTAナトリウム塩 ……0.1重量％
溶媒：水 ……残部
上記組成物を実施例１と同様な方法にてジエツ
ト印刷用インキを調整した。このインキをサンプ
ル管に入れ、開栓状態で２週間放置後粘度を測定
したところ、非ニユートン粘性を示しており、染
料の会合によるゲル状態への変化が認められた。
また、前記インキをノズルオリフイス径30μのジ
エツト印刷機を用いて噴射試験を行つたところ、
約12時間でフイルタ及びノズルにより目詰りを生
じ、噴射不能になつた。Comparative Example 3 Dye: CIDirect containing approximately 56% by weight of added salt
Blue 86 (Product name: Chlorantine Fast Turquoise)
Blue GLL22%, manufactured by Ciba)...2.9% by weight Antifungal agent: Sodium Omazine...0.3% by weight Wetting agent: PEG#300...15.0% by weight Chelating agent: EDTA sodium salt...0.1% by weight Solvent: Water... Remainder: A jet printing ink was prepared using the above composition in the same manner as in Example 1. When this ink was placed in a sample tube and left open for two weeks, the viscosity was measured, and it showed non-Newtonian viscosity, and a change to a gel state due to dye association was observed.
In addition, when the above ink was subjected to a jetting test using a jet printing machine with a nozzle orifice diameter of 30μ,
After about 12 hours, the filter and nozzle became clogged and spraying became impossible.
以上詳述した如く本発明ジエツト印刷用インキ
は染料の会合、カビの発生等によるノズル、フイ
ルタの目詰りがおこらず、又インキの乾燥条件下
においても染料の析出や不溶固形物が発生せず、
ジエツト印刷機用インキとして長期に亘り使用し
うる等顕著な効果を有する。 As detailed above, the jet printing ink of the present invention does not cause clogging of nozzles or filters due to dye association or mold growth, and also does not cause dye precipitation or insoluble solid matter to occur even under ink drying conditions. ,
It has remarkable effects such as being able to be used for a long time as an ink for jet printing presses.
第１図は未精製染料を用いたジエツト印刷用イ
ンキの粘度とずり速度との関係曲線図、第２図は
精製したC.I.Direct Blue 86水溶液及びそれに塩
化ナトリウムを添加した溶液の粘度とずり速度と
の関係曲線図である。
１……インキ配合直後の粘度特性、２……乾燥
により28％濃縮後の粘度特性、３……精製したC.
I.Direct Blue 86の２％水溶液の粘度特性、４…
…精製したC.I.Direct Blue 86の２％水溶液に２
％の塩化ナトリウムを添加した溶液の粘度特性。
Figure 1 shows the relationship between viscosity and shear rate for jet printing ink using unpurified dye, and Figure 2 shows the relationship between viscosity and shear rate for purified CIDirect Blue 86 aqueous solution and a solution containing sodium chloride. It is a relationship curve diagram. 1... Viscosity properties immediately after ink formulation, 2... Viscosity properties after 28% concentration by drying, 3... Purified C.
Viscosity characteristics of 2% aqueous solution of I.Direct Blue 86, 4…
...2% aqueous solution of purified CIDirect Blue 86
Viscosity properties of solutions with addition of % sodium chloride.
Claims (1)
てなるジエツト印刷用水性インキにおいて、水溶
性染料は下記構造式を示し且つインキ中の無機性
不純物の含有量が0.5重量％以下であり、 （ただしｎ＝２〜４の整数） 又防黴剤は２−ピリジンチオール−１−オキサイ
ドナトリウム塩からなることを特徴とするジエツ
ト印刷用水性インキ。[Scope of Claims] 1. In a water-based jet printing ink prepared by dissolving a water-soluble dye, a fungicide, and a wetting agent in water, the water-soluble dye has the following structural formula, and the content of inorganic impurities in the ink is is 0.5% by weight or less, (However, n=an integer of 2 to 4) Further, a water-based ink for jet printing, wherein the antifungal agent is composed of 2-pyridinethiol-1-oxide sodium salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56059535A JPS57174359A (en) | 1981-04-20 | 1981-04-20 | Water ink for jet printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56059535A JPS57174359A (en) | 1981-04-20 | 1981-04-20 | Water ink for jet printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57174359A JPS57174359A (en) | 1982-10-27 |
| JPH0212266B2 true JPH0212266B2 (en) | 1990-03-19 |
Family
ID=13116046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56059535A Granted JPS57174359A (en) | 1981-04-20 | 1981-04-20 | Water ink for jet printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57174359A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59124967A (en) * | 1982-12-29 | 1984-07-19 | Canon Inc | Recording liquid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212008A (en) * | 1975-07-18 | 1977-01-29 | Nippon Telegraph & Telephone | Water ink for jet printing |
| JPS5212009A (en) * | 1975-07-18 | 1977-01-29 | Nippon Telegraph & Telephone | Water ink for jet printing |
| JPS55144064A (en) * | 1979-04-26 | 1980-11-10 | Canon Inc | Recording liquid |
-
1981
- 1981-04-20 JP JP56059535A patent/JPS57174359A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212008A (en) * | 1975-07-18 | 1977-01-29 | Nippon Telegraph & Telephone | Water ink for jet printing |
| JPS5212009A (en) * | 1975-07-18 | 1977-01-29 | Nippon Telegraph & Telephone | Water ink for jet printing |
| JPS55144064A (en) * | 1979-04-26 | 1980-11-10 | Canon Inc | Recording liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57174359A (en) | 1982-10-27 |
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