JPH0485375A - Ink composition for ink jet printing - Google Patents
Ink composition for ink jet printingInfo
- Publication number
- JPH0485375A JPH0485375A JP2196093A JP19609390A JPH0485375A JP H0485375 A JPH0485375 A JP H0485375A JP 2196093 A JP2196093 A JP 2196093A JP 19609390 A JP19609390 A JP 19609390A JP H0485375 A JPH0485375 A JP H0485375A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- pigment
- drying
- parts
- sugar alcohol
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 238000007641 inkjet printing Methods 0.000 title description 2
- 239000000049 pigment Substances 0.000 claims abstract description 38
- 239000002270 dispersing agent Substances 0.000 claims abstract description 23
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000005846 sugar alcohols Chemical class 0.000 claims abstract description 15
- 230000002776 aggregation Effects 0.000 claims abstract description 12
- 239000003960 organic solvent Substances 0.000 claims abstract description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012736 aqueous medium Substances 0.000 claims abstract description 8
- 239000004202 carbamide Substances 0.000 claims abstract description 8
- 238000004220 aggregation Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 150000002772 monosaccharides Chemical class 0.000 claims description 3
- 150000004043 trisaccharides Chemical class 0.000 claims description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005054 agglomeration Methods 0.000 abstract description 7
- 239000003112 inhibitor Substances 0.000 abstract description 7
- 239000006229 carbon black Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 abstract description 2
- 239000000600 sorbitol Substances 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 66
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 18
- 239000002245 particle Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000002609 medium Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920001542 oligosaccharide Polymers 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- -1 amine salts Chemical class 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 235000000346 sugar Nutrition 0.000 description 3
- 150000008163 sugars Chemical class 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QGKMIGUHVLGJBR-UHFFFAOYSA-M (4z)-1-(3-methylbutyl)-4-[[1-(3-methylbutyl)quinolin-1-ium-4-yl]methylidene]quinoline;iodide Chemical compound [I-].C12=CC=CC=C2N(CCC(C)C)C=CC1=CC1=CC=[N+](CCC(C)C)C2=CC=CC=C12 QGKMIGUHVLGJBR-UHFFFAOYSA-M 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 150000002016 disaccharides Chemical class 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002482 oligosaccharides Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- XJCCHWKNFMUJFE-CGQAXDJHSA-N Maltotriitol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O[C@@H]([C@H](O)[C@@H](O)CO)[C@H](O)CO)O[C@H](CO)[C@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 XJCCHWKNFMUJFE-CGQAXDJHSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 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
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 238000009835 boiling Methods 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
- 238000005119 centrifugation Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 150000005125 dioxazines Chemical class 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000845 maltitol Substances 0.000 description 1
- 235000010449 maltitol Nutrition 0.000 description 1
- VQHSOMBJVWLPSR-WUJBLJFYSA-N maltitol Chemical compound OC[C@H](O)[C@@H](O)[C@@H]([C@H](O)CO)O[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O VQHSOMBJVWLPSR-WUJBLJFYSA-N 0.000 description 1
- 229940035436 maltitol Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003973 paint 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
- 239000003208 petroleum Substances 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
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical class S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はインキジェット用インキ組成物に関し、更に詳
しくは着色剤に顔料を使用したインキジェット用水性顔
料インキについて、インキの乾燥防止性に優れ、又、乾
燥した場合でも再溶解性に優れたインキジェット用イン
キ組成物に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an ink composition for inkjet, and more specifically, to an aqueous pigment ink for inkjet that uses a pigment as a colorant, and which has excellent drying prevention properties. The present invention also relates to an inkjet ink composition that has excellent resolubility even when dried.
［従来の技術及びその課題］
従来、インキジェット記録方式は静粛性、記録速度、印
字品位、ランニングコスト等に優れ、般に広（普及して
いる。[Prior art and its problems] Conventionally, inkjet recording methods have been excellent in quietness, recording speed, printing quality, running cost, etc., and have been widely used.
一方、この方式はノズルの目詰まり性の問題があり、イ
ンキ媒体に高沸点溶剤を使用する等の乾燥防止を施した
り、プリンタ装置内部に洗浄機構やノズルキャップを取
付る等して実用化している。On the other hand, this method has the problem of nozzle clogging, and it has not been put into practical use by taking steps to prevent drying, such as using a high-boiling point solvent for the ink medium, or by installing a cleaning mechanism or nozzle cap inside the printer. There is.
又、着色剤は上記問題に対応するため、通常染料が使用
されている。染料はインキが乾燥によりノズル部に固体
化した場合でも洗浄等により容易に再溶解することがで
きるからである。しがしながら、染料による記録物は耐
光性や耐水性が不十分であるという欠点がある。In order to solve the above problem, dyes are usually used as coloring agents. This is because even if the ink solidifies in the nozzle portion due to drying, the dye can be easily redissolved by washing or the like. However, recorded materials using dyes have the drawback of insufficient light fastness and water fastness.
インキの着色剤として顔料を使用すればこれら堅牢度の
問題は解決されるが、顔料粒子がプリンタの微細なノズ
ル孔を詰まらせるという基本的問題がある。又、インキ
が乾燥により固体化してしまうという問題があり、顔料
インキの実用化は困難であった。Although the use of pigments as colorants in inks solves these fastness problems, there is a fundamental problem in that the pigment particles clog the fine nozzle holes of the printer. Furthermore, there is a problem that the ink becomes solid upon drying, making it difficult to put pigment ink into practical use.
特に顔料インキの場合、乾燥により固体化すると顔料粒
子は凝集してしまい、ノズル孔を詰まらせたり、染料イ
ンキのようにインキ媒体又は特定の洗浄液を用いて再溶
解しようとしても溶解されず、ノズルの詰まりを解決で
きないという実用上大きな問題があった。Particularly in the case of pigment inks, when they solidify upon drying, the pigment particles aggregate and clog the nozzle holes, or, like dye inks, cannot be dissolved even if you try to re-dissolve them using an ink medium or a specific cleaning solution, and the nozzle particles become clogged. There was a major practical problem in that the blockage could not be resolved.
本発明者は、以前に顔料の分散剤として特定のポリマー
分散剤を使用し、且つインキ組成物中にエチレングリコ
ール等の不揮発性有機溶剤を含有させることによって前
者の問題を解決した。The present inventor previously solved the former problem by using a specific polymer dispersant as a pigment dispersant and by incorporating a nonvolatile organic solvent such as ethylene glycol into the ink composition.
しかしながら、顔料インキの乾燥とそれに続く顔料凝集
という問題があり、未だ十分な性能を有した顔料インキ
は提供されていない。However, there are problems with drying of the pigment ink and subsequent pigment aggregation, and a pigment ink with sufficient performance has not yet been provided.
従って本発明の目的は、インキジェット方式等のインキ
とじてに最適な水性顔料インキを提供することである。Therefore, an object of the present invention is to provide an aqueous pigment ink that is most suitable for inkjet printing and the like.
［課題を解決するための手段］
本発明によれば、顔料、ポリマー分散剤、水性媒体及び
乾燥・凝集防止剤からなり、上記水性媒体が水と不揮発
性有機溶剤とからなり、上記乾燥・凝集防止剤が尿素と
糖アルコールとの混合物であることを特徴とするインキ
ジェット用インキ組成物によって上記目的が達成された
。[Means for Solving the Problems] According to the present invention, the pigment, a polymer dispersant, an aqueous medium, and a drying/aggregation prevention agent are comprised, and the aqueous medium is comprised of water and a nonvolatile organic solvent, and the drying/aggregation prevention agent is The above object has been achieved by an inkjet ink composition characterized in that the inhibitor is a mixture of urea and a sugar alcohol.
［作 用］
ポリマー分散剤及び不揮発性有機溶剤を含む顔料インキ
に特定の乾燥・凝集防止剤を添加することによりインキ
の乾燥を遅延し、インキノズルが詰まることな（安定に
インキが吐出し、更にインキが乾燥固化した場合でも、
水によりノズルを洗浄することでインキ乾燥物が容易に
溶解し、顔料が凝集することなくインキの再吐出が可能
な水性顔料インキを提供することができる。[Function] By adding a specific drying/agglomeration inhibitor to pigmented ink containing a polymer dispersant and a non-volatile organic solvent, the drying of the ink is delayed and the ink nozzle is not clogged (the ink is stably ejected, Furthermore, even if the ink dries and solidifies,
By washing the nozzle with water, the dried ink is easily dissolved, and it is possible to provide an aqueous pigment ink in which the ink can be re-discharged without agglomeration of the pigment.
［好ましい実施態様］
次に好ましい実施態様を挙げて本発明を更に詳しく説明
する。[Preferred Embodiments] Next, the present invention will be described in more detail by citing preferred embodiments.
本発明で使用する顔料は、従来各種の着色分野で使用さ
れている有機顔料及び無機顔料であり、従来公知のいず
れの顔料も使用することができ、例えば、アゾ系、フタ
ロシアニン系、キナクリドン系、アンスラキノン系、ジ
オキサジン系、インジゴ・チオインジゴ系、ペリノン・
ペリレン系、イソインドレノン系、アゾメチンアゾ系、
カーボンブラックが挙げられ、又、蛍光染料等により着
色した樹脂粒子等の蛍光プラスチックピグメントも好ま
しく使用できる。The pigments used in the present invention are organic pigments and inorganic pigments that have been conventionally used in various coloring fields, and any conventionally known pigments can be used, such as azo-based, phthalocyanine-based, quinacridone-based, Anthraquinone series, dioxazine series, indigo/thioindigo series, perinone/
Perylene series, isoindorenone series, azomethine azo series,
Examples include carbon black, and fluorescent plastic pigments such as resin particles colored with fluorescent dyes and the like can also be preferably used.
本発明のインキ組成物において使用する顔料の使用割合
は、被記録物体に十分な着色濃度を与える濃度であれば
いずれの濃度でもよいが、−船釣にはインキ組成物中で
３乃至１０重量％を占める割合が好ましい。The proportion of the pigment used in the ink composition of the present invention may be any concentration as long as it provides sufficient coloring density to the recorded object; % is preferred.
又、本発明で使用するポリマー分散剤は、分散剤とバイ
ンダーの両方の作用を有し、インキ中に分散させた顔料
粒子の分散安定拝を向上させ、且つ被記録物体に付着さ
せられた顔料粒子を接着させる作用を有する。Furthermore, the polymer dispersant used in the present invention has the functions of both a dispersant and a binder, and improves the dispersion stability of pigment particles dispersed in the ink, and also improves the dispersion stability of pigment particles dispersed in the ink, and improves the dispersion stability of the pigment particles adhered to the recording object. It has the effect of adhering particles.
このようなポリマー分散剤は、構造的に大別すると縮合
系重合体及び付加重合体に分けられ、既存のものがいず
れも使用可能であり、好ましいものとして、縮合系のも
のは、例えば、特開昭６０−２６０７０号公報に記載の
ポリエステル系分散剤があり、又、付加重合系の分散剤
としては、α、β−エチレン性不餡和基を有するモノマ
ーの付加重合体が挙げられる。Such polymer dispersants can be roughly divided into condensation polymers and addition polymers based on their structure. Any existing ones can be used, and condensation polymers are preferable, such as special polymers. There is a polyester dispersant described in JP-A No. 60-26070, and examples of addition polymerization dispersants include addition polymers of monomers having α,β-ethylenically unsaturated groups.
特に好ましいものは付加重合体系分散剤であり、これら
の分散剤は親油性部分を形成する七ツマ−と親水性部分
を形成するモノマーとの共重合によって得られる。Particularly preferred are addition polymer based dispersants, which are obtained by copolymerization of a heptamer forming the lipophilic part and a monomer forming the hydrophilic part.
上記の如き付加重合性ポリマー分散剤は、親水性及び親
油性のモノマーを適当な割合で混合し、従来公知の混合
重合方法、例えば、溶液重合方法、懸濁重合方法、乳化
重合方法等、いずれの重合方法によっても得ることがで
きる。必要に応じて重合調節剤等公知の添加剤も使用す
ることができる。その際に使用する重合媒体は、インキ
の水性媒体として使用し得る水又は親水性溶媒であれば
、そのまま得られた重合液をインキの媒体として使用す
ることができるし、又、重合体を溶液から分離した後、
適当な媒体に再度溶解させて使用することもできる。The above addition-polymerizable polymer dispersant can be prepared by mixing hydrophilic and lipophilic monomers in appropriate proportions and using any conventional mixed polymerization method, such as solution polymerization method, suspension polymerization method, emulsion polymerization method, etc. It can also be obtained by the polymerization method of Known additives such as polymerization regulators can also be used if necessary. As long as the polymerization medium used at that time is water or a hydrophilic solvent that can be used as an aqueous medium for ink, the polymerization liquid obtained as is can be used as an ink medium, or the polymer can be used as a solution for ink. After separating from
It can also be used after being redissolved in an appropriate medium.
このようにして得られるポリマー分散剤は、特にその分
子量によって規定されるものではないが、１，０００乃
至１００，０００の範囲の分子量を有するものが、溶液
中の重合体倉荷率、溶液粘度及びそれを使用したインキ
組成物の粘度等の性質、記録物の堅牢度等の品質等から
好ましいものである。The polymer dispersant obtained in this way is not particularly defined by its molecular weight, but those having a molecular weight in the range of 1,000 to 100,000 are It is preferable from the viewpoint of properties such as viscosity of an ink composition using it and quality such as fastness of recorded matter.
本発明においては、インキ中の顔料のバインダーとして
、前記のポリマー分散剤がそのまま使用できるが、ポリ
マー分散剤のみではバインダーとしては量が不足し、筆
記物の耐摩擦性等が十分でない場合には、上記分散剤に
加えて又は代えて他の水溶性樹脂を添加することもでき
る。In the present invention, the above-mentioned polymer dispersant can be used as it is as a binder for the pigment in the ink, but if the amount of the polymer dispersant alone is insufficient as a binder and the abrasion resistance of writing is not sufficient, In addition to or in place of the above-mentioned dispersant, other water-soluble resins may also be added.
このような水溶性樹脂としては、例えば、アクリル樹脂
、スチレン−無水マレイン酸樹脂、マレイン化油、マレ
イン化ポリブタジェン、マレイン化アルキド樹脂、マレ
イン化石油樹脂、マレイン化ロジンエステル、ポリビニ
ルピロリドン等のアルカリ金属、アンモニア、アミン塩
等が好ましく、インキの粘度を過度に上昇させない範囲
の量で使用する。Examples of such water-soluble resins include alkali metal resins such as acrylic resins, styrene-maleic anhydride resins, maleated oils, maleated polybutadiene, maleated alkyd resins, maleated petroleum resins, maleated rosin esters, and polyvinylpyrrolidone. , ammonia, amine salts, etc. are preferred, and are used in amounts that do not excessively increase the viscosity of the ink.
上記の如き分散剤或は水溶性樹脂のインキ組成物におけ
る使用量は、顔料の種類及び夫々の銘柄によって異なり
一層に規定し得るものではないが、顔料１００重量部に
対して約３乃至１００重量部の割合である。The amount of the above-mentioned dispersant or water-soluble resin used in the ink composition varies depending on the type and brand of the pigment and cannot be further specified, but it is approximately 3 to 100 parts by weight per 100 parts by weight of the pigment. This is the percentage of
又、本発明のインキ組成物を構成する水性媒体は、水と
不揮発性有機溶媒とからなり、不揮発性有機溶剤は、ノ
ズルでのインキの乾燥防止効果を有するものであり、例
えば、エチレングリコール、ジエチレングリコール、ト
リエチレングリコール、プロピレングリコール、ジプロ
ピレングリコール、メチルセロソルブアセテート、メチ
ルカルピトール、エチルカルピトール、ブチルカルピト
ール、グリセリン等が挙げられ、これらの不揮発性有機
溶剤は水１００重量部に対して３０乃至８０重量部の比
率で使用するのが好ましい。Further, the aqueous medium constituting the ink composition of the present invention is composed of water and a non-volatile organic solvent, and the non-volatile organic solvent has the effect of preventing the ink from drying in the nozzle, such as ethylene glycol, Examples include diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, methyl cellosolve acetate, methyl carpitol, ethyl carpitol, butyl carpitol, glycerin, etc. These nonvolatile organic solvents are used in an amount of 30 parts by weight per 100 parts by weight of water. It is preferable to use it in a proportion of 80 to 80 parts by weight.
本発明で使用する乾燥・凝集防止剤の一つの成分は尿素
である。尿素はインキ１００重量部に対して５乃至３０
重量部の比率で使用するのが好ましい。One component of the drying/agglomeration inhibitor used in the present invention is urea. Urea is 5 to 30 parts by weight per 100 parts by weight of ink.
Preferably, they are used in parts by weight.
更にもう１つの成分は糖類を還元して得られる糖アルコ
ール類であり、具体的にいえば１糖から得られるソルビ
ット、２糖から得られるマルチトール、３糖から得られ
るマルトトリイトール、更に４糖以上の糖類から得られ
るいわゆるオリゴ糖アルコールが挙げられる。これらの
糖アルコール類はインキ１００重量部に対して５乃至２
０重量部の比率で使用するのが好ましい。Yet another component is sugar alcohols obtained by reducing sugars, specifically sorbitol obtained from monosaccharides, maltitol obtained from disaccharides, maltotriitol obtained from trisaccharides, and Examples include so-called oligosaccharide alcohols obtained from sugars or higher sugars. These sugar alcohols are contained in an amount of 5 to 2 parts per 100 parts by weight of the ink.
Preferably, a proportion of 0 parts by weight is used.
上記糖アルコールは工業的には上記各種糖アルコール類
の混合物の溶液として容易に入手できるが、オリゴ糖ア
ルコール単品は非常に粘稠でありインキに添加した場合
インキ粘度が上昇し、実用的なインキを供することがで
きない。このため本発明ではこのようなオリゴ糖アルコ
ールの含有量があまり多（ない糖アルコール混合物又は
オリゴ糖アルコールを含まない１糖、２糖又は３糖から
得られる糖アルコール或はこれらの混合物を使用するの
が好ましい。The above sugar alcohols are industrially easily available as a solution of a mixture of the various sugar alcohols mentioned above, but oligosaccharide alcohols alone are very viscous and when added to ink, the ink viscosity increases, making it difficult to create practical inks. cannot be provided. For this reason, in the present invention, a sugar alcohol mixture containing not much oligosaccharide alcohol, a sugar alcohol obtained from monosaccharide, disaccharide, or trisaccharide containing no oligosaccharide alcohol, or a mixture thereof is used. is preferable.
更に、本発明ではその他、従来公知の添加剤を必要に応
じて添加することができる。Furthermore, in the present invention, other conventionally known additives may be added as necessary.
本発明のインキジェット用インキ組成物は、上記の構成
成分及び配合からなり、その製造方法は各種の方法が採
用できる。例えば、上記の各種成分を配合し、これをボ
ールミル、ホモミキサーサンドグラインダー、スピード
ラインミル、ロールミル等の従来公知の分散機により顔
料を混合暦数した後、濃度、粘度、その他の物性値を調
整し、濾過、遠心分離等で粗大粒子を除去しインキを得
ることができる。The ink jet ink composition of the present invention comprises the above-mentioned components and formulations, and various methods can be employed for its production. For example, the various ingredients listed above are mixed, mixed with pigment using a conventionally known dispersing machine such as a ball mill, homo mixer sand grinder, speed line mill, roll mill, etc., and then the concentration, viscosity, and other physical property values are adjusted. Then, coarse particles can be removed by filtration, centrifugation, etc. to obtain ink.
［実施例］
次に実施例及び比較例を挙げて本発明を更に具体的に説
明する。尚、文中、部又は％とあるのは特に断りのない
限り重量基準である。[Example] Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. In the text, parts or percentages are based on weight unless otherwise specified.
実施例
カーボンブラック［商品名 カーボンブラック＃１００
０、三菱化成製］ １００部分散剤［
商品名 Ｊ−６２、ジョンソンポリマー製、樹脂分３４
％］ １００部水
３５０部上記成分を混合し、
ペイントコンデショナーｒレッドデビル社製］で２時間
分散処理し、超遠心分離機にかけ、分散不良の粗大粒子
を除き、黒色の水性分散液［Ａ］を得た。Example Carbon Black [Product Name Carbon Black #100
0, manufactured by Mitsubishi Kasei] 100 part dispersant [
Product name J-62, made by Johnson Polymer, resin content 34
%] 100 parts water
Mix 350 parts of the above ingredients,
The dispersion was treated with Paint Conditioner R (manufactured by Red Devil Co., Ltd.) for 2 hours, and then subjected to an ultracentrifuge to remove poorly dispersed coarse particles to obtain a black aqueous dispersion [A].
この分散液Ａに
エチレングリコール ２６０部ジエチレ
ングリコール １１５部水
４００部を加えて混合攪
拌し、顔料濃度７．５％、粘度３、７ｃｐ ［２５℃］
及び表面張力４４ ｄｙｎｅ／ ｃｍの黒色インキＩＩ
］を得た。Add 260 parts of ethylene glycol to this dispersion A, 115 parts of diethylene glycol, and 115 parts of water.
Add 400 parts and mix and stir to obtain a pigment concentration of 7.5% and a viscosity of 3.7 cp [25°C]
and black ink II with a surface tension of 44 dyne/cm.
] was obtained.
シアニンブルー［商品名 シアニンブルー４９３０、大
日精化製コ １００部分散剤［商品
名 Ｊ−６２，ジョンソンポリマー製、樹脂分３４％コ
１２０部水
３５０部エチレングリコール
２６０部を混合し、同様に顔料分散処理
を行い、更にエチレングリコール ２６
０部ジエチレングリコール １１５部水
４００部を加
えて混合攪拌し、顔料濃度７％、粘度４． Ｏｃｐ［２
５℃］及び表面張力４６ｄｙｎｅ／ ｃｒｎの青色イン
キ［ｎｌを得た。Cyanine Blue [Product Name: Cyanine Blue 4930, manufactured by Dainichiseika Chemical Co., Ltd. 100 parts Dispersant [Product Name: J-62, manufactured by Johnson Polymer Co., Ltd., resin content 34% Co., 120 parts water]
350 parts ethylene glycol
260 parts of ethylene glycol were mixed, subjected to pigment dispersion treatment in the same manner, and further 26 parts of ethylene glycol was added.
0 parts diethylene glycol 115 parts water
Add 400 parts and mix and stir until the pigment concentration is 7% and the viscosity is 4. Ocp[2
5° C.] and a surface tension of 46 dyne/crn [nl] was obtained.
上記インキＩ及びＨについて乾燥・凝集防止剤を加えた
インキの実施例と比較例を下記第２表に記す。Examples and comparative examples of inks to which a drying/agglomeration inhibitor was added for the above Inks I and H are shown in Table 2 below.
糖アルコールは下記第１表に示す組成である。The sugar alcohol has a composition shown in Table 1 below.
（以下余白）
１表
（以下余白）
これらの実施例及び比較例の各インキをインキカートリ
ッジ［ＤＩＣＯＮＩＸ社製、ノズル径６０μｍ］に充填
し、インキが吐出することを確認した後、室内又は加温
状態に所定の時間放置し、インキが正常に吐出するかど
うか調べた（第３表の項目Ａ）。更にノズルがインキ乾
燥により固化した時、ノズル部を蒸留水に１５分間浸し
、ノズルの水をふき取り、再度吐出の可否を調べた（第
３表の項目Ｂ）。これらの結果を下記第３表に示す。(Margin below) Table 1 (Margin below) Each ink of these Examples and Comparative Examples was filled into an ink cartridge [manufactured by DICONIX, nozzle diameter 60 μm], and after confirming that the ink was ejected, it was stored indoors or under heating. The ink was left in this state for a predetermined period of time, and it was examined whether the ink was ejected normally (item A in Table 3). Furthermore, when the nozzle was solidified by drying the ink, the nozzle part was immersed in distilled water for 15 minutes, the water from the nozzle was wiped off, and the ability to eject was checked again (item B in Table 3). These results are shown in Table 3 below.
（以下余白）
○：正常にインキが吐出
×：ノズルにインキが固まり吐出しないｍ：テストせず
又、実施例１．３、比較例１．２．３及び５の各インキ
２ｇを径４５ｍｍ、深さ８ｍｍのシャーレに取り、４５
℃で３時間乾燥した後４ｇの水を加え１時間放置する。(Margins below) ○: Ink is discharged normally ×: Ink hardens in the nozzle and does not discharge m: Not tested Also, 2 g of each ink of Example 1.3, Comparative Examples 1.2.3 and 5 was applied to a diameter of 45 mm, Place in a Petri dish with a depth of 8 mm and place 45
After drying at ℃ for 3 hours, 4 g of water was added and left for 1 hour.
この顔料分散液の粒度分布の測定を行い平均粒径を調べ
た。結果を下記第４表に示す。The particle size distribution of this pigment dispersion was measured to find out the average particle size. The results are shown in Table 4 below.
［測定機；コールタ−サブミクロン粒子アナライザー］
（以下余白）
第
表
Ａ：加温前平均粒径
Ｂ：加温後手均粒径
：顔料が再分散しないため測定できない実施例１．２及
び３のインキはノズルが目詰まりすることなく、安定に
インキ吐出が可能なインキであった。更に乾燥条件とし
て４５℃加温下においてインキが固化した場合にも顔料
が凝集することなく水により溶解し、ノズルの詰まりを
容易に解決できるものであった。[Measuring device: Coulter Submicron Particle Analyzer] (The following is a blank space) Table A: Average particle size before heating B: Average particle size after heating: Examples 1.2 and 3 that cannot be measured because the pigment is not redispersed The ink was an ink that could be stably ejected without clogging the nozzles. Furthermore, even when the ink solidified under heating at 45° C. as a drying condition, the pigment was dissolved by water without agglomerating, making it possible to easily solve nozzle clogging.
［効 果］
以上の如き本発明によれば、ポリマー引散剤及び不揮発
性有機溶剤を含む顔料インキに特定の乾燥・凝集防止剤
を添加することによりインキの乾燥を遅延し、インキノ
ズルが詰まることな（安定にインキが吐出し、更にイン
キが乾燥固化した場合でも、水によりノズルを洗浄する
ことでインキ乾燥物が容易に溶解し、顔料が凝集するこ
とな（インキの再吐出が可能な水性顔料インキを提供す
ることができる。[Effect] According to the present invention as described above, by adding a specific drying/agglomeration inhibitor to pigment ink containing a polymer dispersant and a nonvolatile organic solvent, drying of the ink is delayed and ink nozzles are prevented from clogging. (Even if the ink is stably discharged and the ink dries and solidifies, washing the nozzle with water will easily dissolve the dried ink and prevent the pigment from agglomerating.) Pigment ink can be provided.
Claims (1)
止剤からなり、上記水性媒体が水と不揮発性有機溶剤と
からなり、上記乾燥・凝集防止剤が尿素と糖アルコール
との混合物であることを特徴とするインキジェット用イ
ンキ組成物。 ２、糖アルコールが１糖〜３糖を還元して得られる糖ア
ルコール又はこれらの混合物である請求項１に記載のイ
ンキジェット用インキ組成物。 ３、尿素がインキ１００重量部に対し５乃至３０重量％
の範囲である請求項１に記載のインキジェット用インキ
組成物。 ４、糖アルコールがインキ１００重量部に対し５乃至２
０重量％の範囲である請求項１に記載のインキジェット
用インキ組成物。[Scope of Claims] 1. Comprised of a pigment, a polymer dispersant, an aqueous medium, and a drying/aggregation prevention agent, the aqueous medium comprising water and a nonvolatile organic solvent, and the drying/aggregation prevention agent comprising urea and a sugar alcohol. An inkjet ink composition characterized by being a mixture of. 2. The inkjet ink composition according to claim 1, wherein the sugar alcohol is a sugar alcohol obtained by reducing monosaccharide to trisaccharide, or a mixture thereof. 3. Urea is 5 to 30% by weight based on 100 parts by weight of ink
The ink composition for inkjet according to claim 1, which is within the range of . 4. Sugar alcohol: 5 to 2 parts per 100 parts by weight of ink
The inkjet ink composition according to claim 1, wherein the content is in the range of 0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196093A JPH0485375A (en) | 1990-07-26 | 1990-07-26 | Ink composition for ink jet printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196093A JPH0485375A (en) | 1990-07-26 | 1990-07-26 | Ink composition for ink jet printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485375A true JPH0485375A (en) | 1992-03-18 |
Family
ID=16352099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196093A Pending JPH0485375A (en) | 1990-07-26 | 1990-07-26 | Ink composition for ink jet printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485375A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06200199A (en) * | 1993-01-06 | 1994-07-19 | Seiko Epson Corp | Ink composition for ink jet recording |
| US5354369A (en) * | 1992-05-13 | 1994-10-11 | Canon Kabushiki Kaisha | Ink, ink-jet recording process making use of the ink, and equipment therefor |
| JPH09100430A (en) * | 1995-05-04 | 1997-04-15 | Scitex Digital Printing Inc | Method for improving resistivity of dry film of carbon pigment ink jet printing ink |
| US5686508A (en) * | 1993-11-12 | 1997-11-11 | Canon Kabushiki Kaisha | Ink and ink jet recording method and apparatus using the same |
| EP0818518A2 (en) * | 1996-07-10 | 1998-01-14 | Kabushiki Kaisha Pilot | Direct filling ink capable of being used for a ballpoint pen containing an aqueous ink composition |
| US5847026A (en) * | 1994-07-05 | 1998-12-08 | Brother Kogyo Kabushiki Kaisha | Recording ink containing pigment particles and polyvinyl pyrrolidone |
| WO2019073893A1 (en) * | 2017-10-10 | 2019-04-18 | Dic株式会社 | Ink, inkjet recording ink, and printed article |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6274973A (en) * | 1985-09-28 | 1987-04-06 | Pentel Kk | Recording ink |
| JPS6431880A (en) * | 1987-07-27 | 1989-02-02 | Mitsubishi Pencil Co | Water-color ink for writing utensil |
| JPH02214785A (en) * | 1989-02-14 | 1990-08-27 | Mitsubishi Pencil Co Ltd | Water-based ink |
-
1990
- 1990-07-26 JP JP2196093A patent/JPH0485375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6274973A (en) * | 1985-09-28 | 1987-04-06 | Pentel Kk | Recording ink |
| JPS6431880A (en) * | 1987-07-27 | 1989-02-02 | Mitsubishi Pencil Co | Water-color ink for writing utensil |
| JPH02214785A (en) * | 1989-02-14 | 1990-08-27 | Mitsubishi Pencil Co Ltd | Water-based ink |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5354369A (en) * | 1992-05-13 | 1994-10-11 | Canon Kabushiki Kaisha | Ink, ink-jet recording process making use of the ink, and equipment therefor |
| JPH06200199A (en) * | 1993-01-06 | 1994-07-19 | Seiko Epson Corp | Ink composition for ink jet recording |
| US5686508A (en) * | 1993-11-12 | 1997-11-11 | Canon Kabushiki Kaisha | Ink and ink jet recording method and apparatus using the same |
| US5847026A (en) * | 1994-07-05 | 1998-12-08 | Brother Kogyo Kabushiki Kaisha | Recording ink containing pigment particles and polyvinyl pyrrolidone |
| JPH09100430A (en) * | 1995-05-04 | 1997-04-15 | Scitex Digital Printing Inc | Method for improving resistivity of dry film of carbon pigment ink jet printing ink |
| EP0818518A2 (en) * | 1996-07-10 | 1998-01-14 | Kabushiki Kaisha Pilot | Direct filling ink capable of being used for a ballpoint pen containing an aqueous ink composition |
| EP0818518A3 (en) * | 1996-07-10 | 1998-04-08 | Kabushiki Kaisha Pilot | Direct filling ink capable of being used for a ballpoint pen containing an aqueous ink composition |
| US5925175A (en) * | 1996-07-10 | 1999-07-20 | Kabushiki Kaisha Pilot | Direct filling ink capable of being used for a ballpoint pen containing an aqueous ink composition |
| WO2019073893A1 (en) * | 2017-10-10 | 2019-04-18 | Dic株式会社 | Ink, inkjet recording ink, and printed article |
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