JPS596270A - Quick-drying ink for ink jet recording - Google Patents
Quick-drying ink for ink jet recordingInfo
- Publication number
- JPS596270A JPS596270A JP11649882A JP11649882A JPS596270A JP S596270 A JPS596270 A JP S596270A JP 11649882 A JP11649882 A JP 11649882A JP 11649882 A JP11649882 A JP 11649882A JP S596270 A JPS596270 A JP S596270A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- water
- drying
- quick
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001035 drying Methods 0.000 title abstract description 22
- 239000002904 solvent Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 150000005846 sugar alcohols Polymers 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229920005862 polyol Polymers 0.000 abstract 2
- 150000003077 polyols Chemical class 0.000 abstract 2
- -1 ethylene glycol) Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 21
- 239000000203 mixture Substances 0.000 description 7
- 239000000080 wetting agent Substances 0.000 description 5
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 235000006732 Torreya nucifera Nutrition 0.000 description 1
- 244000111306 Torreya nucifera Species 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- MPCYPRXRVWZKGF-UHFFFAOYSA-J tetrasodium 5-amino-3-[[4-[4-[(8-amino-1-hydroxy-3,6-disulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]-4-hydroxynaphthalene-2,7-disulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].C1=C(S([O-])(=O)=O)C=C2C=C(S([O-])(=O)=O)C(N=NC3=CC=C(C=C3)C3=CC=C(C=C3)N=NC3=C(C=C4C=C(C=C(C4=C3O)N)S([O-])(=O)=O)S([O-])(=O)=O)=C(O)C2=C1N MPCYPRXRVWZKGF-UHFFFAOYSA-J 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はインクジェット記録用インクに関するものであ
り、特に印字後の速乾性を改良したインクジェット記録
用インクに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inkjet recording ink, and more particularly to an inkjet recording ink with improved quick drying properties after printing.
インクジェット記録用インクとして求められる基本特性
として、１）ヘッドノズル内で蒸発乾燥しない、２）記
録媒体上での見かけの乾燥時間が短い、３）記録媒体上
でのにじみが少ない、等があり、りの特性については吸
水性の多９１１アルコール系湿１１１１剤を添加するこ
とにより蒸発乾燥を防いでいる。また、２）、 ３）
の特性については、揮発性溶剤や界面活性剤を添加す
ることにより改善がなされており、特に水、多価アルコ
ール糸１ｉｆ＝ ｆｌＷ剤の系に界面活性剤を添加する
ことにより非常に速乾性が向上することが、報告されて
いる。（特開昭５５−６５２６９号公報、特ｆ？）Ｊｌ
ｌｔ’（５６−９５９６１号公報参照）
しかし、紙の繊維方向に煩雑に浸透するため印字品質の
低下を招いてしまうことが指摘され、この点を改善する
ものとして、水、多価アルコール系湿潤剤に塩基性物質
、具体的にはアルカリ金属の水酸化物を添加することで
印字ドツトの円形度を保持しながら比較的速く記録紙上
で乾燥するインクが報告されている。（特開昭５６−５
７８６２号公報） しかし、速乾性という点ではまだ満
足できるインクとは言い難い。The basic properties required for an inkjet recording ink include 1) no evaporation and drying within the head nozzle, 2) short apparent drying time on the recording medium, and 3) little bleeding on the recording medium. Regarding the properties of drying, evaporation and drying are prevented by adding a water-absorbing poly-911 alcohol-based humectant. Also, 2), 3)
Its properties have been improved by adding volatile solvents and surfactants, and in particular, by adding surfactants to the water and polyhydric alcohol yarn system, extremely quick drying properties have been achieved. It has been reported that there is an improvement. (Unexamined Japanese Patent Publication No. 55-65269, special f?) Jl
lt' (Refer to Publication No. 56-95961) However, it has been pointed out that printing quality deteriorates due to complicated penetration in the direction of paper fibers. It has been reported that an ink that dries relatively quickly on recording paper while maintaining the circularity of printed dots by adding a basic substance, specifically an alkali metal hydroxide to the agent, has been reported. (Unexamined Japanese Patent Publication No. 56-5
(Japanese Patent Publication No. 7862) However, it is still difficult to say that the ink is satisfactory in terms of quick drying properties.
本発明は、印字品質な低下させずに、記録紙上での速乾
性の向上をはかり、インクジェット記録用インクとして
の緒特性を満足するインクを提供することを目的として
いる。An object of the present invention is to provide an ink that improves quick-drying properties on recording paper without deteriorating printing quality, and that satisfies the properties required as an inkjet recording ink.
本研究者らは速乾性について一層の向上を目指し、鋭慧
研究を行った結果、水、多価アルコール系湿１Ｍ剤にア
ルカリ金属水酸化物をＰＨ値１２．０から１３．５の範
囲で添加し、それとともに揮発性溶剤を３ｗｔ％ から
１０ｗｔ％ の範囲で添加することにより、揮発性溶剤
無添加のインクに比較して印字品質は同程度を保持しな
がら速乾性を２倍以上にあげることを発見した。Aiming to further improve quick-drying properties, these researchers conducted in-depth research and found that an alkali metal hydroxide was added to a 1M moistening agent based on water and polyhydric alcohol at a pH value in the range of 12.0 to 13.5. By adding a volatile solvent in the range of 3wt% to 10wt%, the quick drying speed is more than doubled while maintaining the same print quality compared to ink without volatile solvents. I discovered that.
揮発性溶剤として、水と自由に混合し、アルカリ溶液中
での安定性を考慮すると、脂肪族低級アルコール類やケ
トン類などの一部が挙げられる。Examples of volatile solvents include aliphatic lower alcohols and ketones, which mix freely with water and are stable in alkaline solutions.
また添加量は、ｊＱｗｔ％ を越える範囲では速乾性は
満足されるが、配録紙上での繊維方向への浸透が顕著に
なり印字ドツトの円形度が悪く、添加にが３ ｗｔ％
に満たない範囲では満足できる速乾性が上げられない。Also, if the amount added exceeds jQwt%, the quick drying property will be satisfied, but the penetration in the direction of the fibers on the recording paper will be significant and the circularity of the printed dots will be poor.
If the range is less than , satisfactory quick-drying performance cannot be achieved.
以上より、水、多価アルコール系湿潤剤にアルカリ金属
水酸化物をＰＨ値が１２．０から１５５の範囲で添加し
、揮発性溶剤を５ ｗｔ％ から１０ｗｔ％ 添加した
インクが、高印字品質を保持しながら速乾性を上げるこ
とができる。From the above, ink containing water or a polyhydric alcohol-based wetting agent with an alkali metal hydroxide added with a pH value in the range of 12.0 to 155, and a volatile solvent added in an amount of 5 wt% to 10 wt% has high print quality. It is possible to improve quick drying while retaining moisture.
本発明に使用される染料は、水溶性で、耐水性、耐光性
に優れていて、しかもアルカリで安定なものに限定され
、ＫａｙａＫｕ Ｄｌｒｅｏｔ Ｄｅｅｐ ＢｌａｃＫ
ＸＡ、 ＫａｙａＫｕ Ｄｉｒｅｃｔ ５ｐｅ
ｃｉａｌ ＢｌａｃＫ ＡＸＮ、 Ｋａ３ｒａｇ
ｅｔＢｌａｏｋ ００９Ａ、 Ｋａｙａｓａｔ ０１０
、Ｋａｙａｓｅｔ Ｂｌａｃｋ ０２１、 Ｋａｙａ
ｓｅｔ Ｖｉｏｌｅｔ ００１ 、Ｋａｙａｓｅｔ Ｂ
ｌｕｅ ００５ 。The dye used in the present invention is limited to one that is water-soluble, has excellent water resistance and light resistance, and is stable in alkali.
XA, KayaKu Direct 5pe
cial BlackK AXN, Ka3rag
etBlaok 009A, Kayasat 010
, Kayaset Black 021, Kaya
set Violet 001, Kayaset B
lue 005.
Ｋａｙａｓｅｔ Ｔｕｒｑｕｎｏｉｓｅ Ｂｌｕｅ Ｇ
Ｌ などが具体例として挙げられ、単独であるいは２
種類以上で用いられる。添加量は色調コン（ラスト、添
加後の析出等を考慮し、１ ｗｔ％ から９ ｗｔ％
にするのが望ましい。Kayaset Turqunoise Blue G
Specific examples include L, used alone or in combination
Used for more than one type. The amount added is from 1 wt% to 9 wt%, considering the color tone contrast (last, precipitation after addition, etc.)
It is desirable to do so.
湿潤剤は、ノズルでの目詰り防止、染料の分散性を保つ
ために添加するが、インクの粘度への影響などを考慮に
入れると、４５ｗｔ％ 以下が望まシく、具体的には、
エチレングリコール、トリエチレングリコールなどの脂
肪族多価アルコール類やこれらの誘導体が挙げられる。The wetting agent is added to prevent clogging in the nozzle and to maintain the dispersibility of the dye, but taking into account the effect on the viscosity of the ink, it is desirable to have a wetting agent of 45 wt% or less, and specifically,
Examples include aliphatic polyhydric alcohols such as ethylene glycol and triethylene glycol, and derivatives thereof.
塩基性物質としては、水や湿潤剤に対する溶解性がすぐ
れしかも安定な強塩基性物質が望ましい。この条件を満
足するものとしてアルカリ金属の水酸化物が挙げられる
が、湿潤剤との化学反応などの影響を考慮すると水酸化
カリウムが望ましく、ＰＨ値を１２．０から１３．５に
するように添加する。As the basic substance, a strong basic substance that has excellent solubility in water and a wetting agent and is stable is desirable. Alkali metal hydroxides are examples of compounds that satisfy this condition, but potassium hydroxide is preferable in consideration of the effects of chemical reactions with wetting agents, and the pH value should be adjusted to between 12.0 and 13.5. Added.
また、インクの長期安定性等を保持するためにＮ−メチ
ル２−ピロリドン、ホクサエイドＸＬ（北興化学（株）
製）、ＥＤＴＡ等を少量添加する以下、実施例によって
、本発明を説明する。In addition, to maintain the long-term stability of the ink, N-methyl 2-pyrrolidone, Hokusaaid XL (Hokuko Chemical Co., Ltd.)
The present invention will be explained below with reference to examples in which small amounts of EDTA, etc. are added.
実施例１
組成
上記の組成で調製されたインクの粘度ηは＆５９七ンチ
ポイズ、ＰＨ１２，９５乾燥時間は一般のインクジェッ
ト用インクが５ｃ秒程度、またＰＨ値が１２．０から１
５５に調整された揮発性溶剤無添加のインクが１０秒で
あるのに対し上記組成で調製されたインクは４秒である
。また、高温（６５℃）放置後もノズルの目詰りは認め
られなかった０
実施例２
上記の組成で調製されたインクの粘度ηは２０℃で３．
２７ ａ、ｐ、、 ＰＨ１３，０５、また乾燥時間は、
ぬれ性が大きいため少量でも４秒とかなり速い。また実
施例１と同様に、高温（６５℃）に放置後のノズルの目
詰りは詔められない。Example 1 Composition The ink prepared with the above composition has a viscosity η of &597 inch poise, a pH of 12.95, a drying time of about 5 csec for general inkjet inks, and a pH value of 12.0 to 1.
The time required for the ink prepared with the above composition is 4 seconds, while the time required for the ink prepared with the above composition is 10 seconds. Further, no clogging of the nozzle was observed even after being left at a high temperature (65°C).0 Example 2 The viscosity η of the ink prepared with the above composition was 3.
27 a, p, PH13,05, and drying time is
Due to its high wettability, it takes only 4 seconds even with a small amount. Also, as in Example 1, there was no problem with nozzle clogging after being left at high temperature (65° C.).
実施例３
上記の組成で調製されたインクの粘度ηは２０℃で２．
８７０．ｐ、で、低粘度を保つことができ、ＰＨ値は１
２．９５．また乾燥時間は５秒である。Example 3 The viscosity η of the ink prepared with the above composition was 2.
870. p, it is possible to maintain low viscosity and the pH value is 1.
2.95. Further, the drying time was 5 seconds.
高温（６５℃）に放置後もノズルの目詰りは認められな
かった。No clogging of the nozzle was observed even after being left at high temperature (65°C).
以上の説明のように、本発明のインクはインクジェット
用インクとしての緒特性を満足することは言うまでもな
く、揮発性溶剤の添加により、蒸 ′発速度の増大
に加えてぬれ性がよくなるという同時に２つの効果によ
り速乾性を上げることを実現した。As explained above, it goes without saying that the ink of the present invention satisfies the initial characteristics as an inkjet ink, and the addition of a volatile solvent not only increases the evaporation rate but also improves wettability. This has resulted in faster drying due to two effects.
乾燥時間は４〜５秒で ＰＨ１２，０から１３．５に調
整した揮発性溶剤無添加のインクの乾燥時間に比較して
４０％から６０％の範囲で乾燥時間の短縮が実現できた
。さらに、印字品質は、円形度の非常に高いＰＨ値が１
２．０から１３．５に調整した揮発性溶剤無添加のイン
クの印字と比較して色の濃さ、甲形度において十分匹敵
するものであった。The drying time was 4 to 5 seconds, which was a 40% to 60% reduction in drying time compared to the drying time of an ink with no volatile solvent added whose pH was adjusted from 12.0 to 13.5. Furthermore, the print quality has a very high circularity with a pH value of 1.
In comparison with printing using ink with no volatile solvent added, which was adjusted from 2.0 to 13.5, the color depth and shell shape were sufficiently comparable.
以 上 出願人 信州精器株式会社 代理人 弁理士 最上 務that's all Applicant: Shinshu Seiki Co., Ltd. Agent Patent Attorney Mogami
Claims (1)
性インクにおいて、揮発性溶剤を５ ｗｔ％から１０ｗ
ｔ％ 、塩基性物質をＰＨ値が１２０から１５．５を与
えるようにそれぞれ添加することを特徴としたインクジ
ェット記録用速乾性インク。In water-soluble ink whose main components are water-soluble dye, polyhydric alcohol, and water, the volatile solvent is 5 wt% to 10 w.
t% and a basic substance are added to give a pH value of 120 to 15.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11649882A JPS596270A (en) | 1982-07-05 | 1982-07-05 | Quick-drying ink for ink jet recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11649882A JPS596270A (en) | 1982-07-05 | 1982-07-05 | Quick-drying ink for ink jet recording |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596270A true JPS596270A (en) | 1984-01-13 |
Family
ID=14688622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11649882A Pending JPS596270A (en) | 1982-07-05 | 1982-07-05 | Quick-drying ink for ink jet recording |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596270A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566976A (en) * | 1978-11-13 | 1980-05-20 | Seiko Epson Corp | Quick-drying ink for ink-jet recording |
| JPS5657862A (en) * | 1979-10-17 | 1981-05-20 | Seiko Epson Corp | Ink for ink-jet recording |
-
1982
- 1982-07-05 JP JP11649882A patent/JPS596270A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566976A (en) * | 1978-11-13 | 1980-05-20 | Seiko Epson Corp | Quick-drying ink for ink-jet recording |
| JPS5657862A (en) * | 1979-10-17 | 1981-05-20 | Seiko Epson Corp | Ink for ink-jet recording |
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