JPH03152171A - Ink jet recording liquid - Google Patents
Ink jet recording liquidInfo
- Publication number
- JPH03152171A JPH03152171A JP1291572A JP29157289A JPH03152171A JP H03152171 A JPH03152171 A JP H03152171A JP 1291572 A JP1291572 A JP 1291572A JP 29157289 A JP29157289 A JP 29157289A JP H03152171 A JPH03152171 A JP H03152171A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- recording liquid
- liquid
- ejection
- trimethylolpropane
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 67
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000004044 response Effects 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000306 component Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- -1 phlopylene gellicol Chemical compound 0.000 description 4
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical group OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 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
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000005456 alcohol based solvent Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000012533 medium component Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- LYCAIKOWRPUZTN-NMQOAUCRSA-N 1,2-dideuteriooxyethane Chemical compound [2H]OCCO[2H] LYCAIKOWRPUZTN-NMQOAUCRSA-N 0.000 description 1
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000012745 brilliant blue FCF Nutrition 0.000 description 1
- 239000004161 brilliant blue FCF Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- DHQJMKJYFOHOSY-UHFFFAOYSA-L disodium 4-amino-3-[[4-[4-[(2,4-diaminophenyl)diazenyl]-3-methylphenyl]-2-methylphenyl]diazenyl]-5-oxido-6-phenyldiazenyl-7-sulfonaphthalene-2-sulfonate Chemical compound [Na+].[Na+].Cc1cc(ccc1N=Nc1ccc(N)cc1N)-c1ccc(N=Nc2c(N)c3c(O)c(N=Nc4ccccc4)c(cc3cc2S([O-])(=O)=O)S([O-])(=O)=O)c(C)c1 DHQJMKJYFOHOSY-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 1
- 235000012756 tartrazine Nutrition 0.000 description 1
- 239000004149 tartrazine Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 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）
本発明は、インクジェット記録装置用の、より詳しくは
、熱エネルギーを利用して、記録ヘッドに設けられた微
細なインク吐出口（吐出オリフィス）からインクを吐出
させることにより飛翔液滴を形成して、その液滴によっ
て記録を行なうインクジェット記録装置に適した記録液
に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an inkjet recording device, more specifically, to a fine ink ejection opening (ejection orifice) provided in a recording head using thermal energy. The present invention relates to a recording liquid suitable for an inkjet recording apparatus that forms flying droplets by ejecting ink from a surface and performs recording using the droplets.
（従来の技術）
インクジェット記録方式による記録は、低騒音であシ、
且つ記録の高速化及びカラー化が容易であシ、又、普通
紙が使用できる可能性があるため、近年各種プリンター
コピー ファクシミ’）等への応用、開発が盛んに行
なわれている。(Prior art) Recording using the inkjet recording method is low noise,
In addition, it is easy to record at high speed and in color, and it is possible to use plain paper, so it has been actively developed and applied to various printers, copies, facsimile machines, etc. in recent years.
この様なインクジェット記録法は、インクと称される記
録液の液滴を飛翔させ、これを被記録材に付着させて記
録を行なうものである。かかる記録液は、記録剤（染料
又は顔料）及びこれを溶解又は分散する液媒体（水又は
各種有機溶剤或はこれらの混合物）を基本的成分とし、
又必要に応じて各種添加剤が添加されている。この様な
記録法には、液滴の発生方法や液滴の飛翔方向の制御方
法を異にする糧々の方、式がある。例えば、飛翔液滴の
発生方法としては、ピエゾ振動子によって記録液に圧力
を加える方法、記録液に静電界をかけてその引力を利用
する方法、記録液に熱エネルギーを加えてその際発生す
る圧力を利用する方法などが知られている。In such an inkjet recording method, recording is performed by causing droplets of a recording liquid called ink to fly and adhere to a recording material. The basic components of such a recording liquid include a recording agent (dye or pigment) and a liquid medium for dissolving or dispersing it (water or various organic solvents or mixtures thereof),
Additionally, various additives are added as necessary. Such recording methods include various methods and formulas that differ in the method of generating droplets and the method of controlling the flight direction of the droplets. For example, flying droplets can be generated by applying pressure to the recording liquid using a piezoelectric vibrator, by applying an electrostatic field to the recording liquid and utilizing its attractive force, or by applying thermal energy to the recording liquid. A method using pressure is known.
この様に、液滴の発生方法だけを見ても、その方法は様
々である。従って、良好な記録を行うためには、使用さ
れる記録液が液滴の発生方法或は液滴の飛翔方向の制御
方法に応じて最適な物性値、例えば粘度、表面張力、比
抵抗、誘電率等を有する必要がある。そして、何れの方
式に於いても、記録液は、長期間の保存或は記録の休止
中に液媒体成分の気化或は構成成分の化学変化等により
、固形分が生じてはならない。一般にこの種の記録装置
の吐出オリフィスは、微細な穴（一般に直径２０〜６０
．ｌｊｍ程度）であるために、固形分の発生は目詰まり
の原因になり液滴が全く吐出しなくなることがあるから
である。また、吐出停止が起こらないまでも、固形分の
発生は、均一な液滴の発生酸は液滴の安定な飛翔等に対
して悪影響を及ぼし吐出安定性、吐出応答性及び記録性
を低下させる原因とな゛る。また、記録液の構成成分が
化学変化を起こすと、調合時に所望の値に調整された記
録液の物性値が変化し、やはり、吐出安定性、吐出応答
性及び記録性を低下させる弊害もある。従って気化しに
くい液媒体成分、化学的に安定な記録剤、及び上記の欠
点を生じない液媒体の組合せが求められている。As described above, there are various methods for generating droplets. Therefore, in order to perform good recording, the recording liquid used must have optimal physical properties, such as viscosity, surface tension, specific resistance, and dielectric It is necessary to have a rate etc. In either method, the recording liquid must not contain any solid content due to vaporization of the liquid medium components or chemical changes in the constituent components during long-term storage or when recording is stopped. Generally, the ejection orifice of this type of recording device is a fine hole (generally 20 to 60 mm in diameter).
．． 1jm), the generation of solid content may cause clogging and may prevent droplets from being ejected at all. In addition, even if ejection does not stop, the generation of solid content will cause uniform droplets to be generated.Acid will have a negative effect on the stable flight of droplets, reducing ejection stability, ejection response, and recording performance. It becomes the cause. Furthermore, if the constituent components of the recording liquid undergo chemical changes, the physical properties of the recording liquid, which were adjusted to desired values during compounding, will change, which also has the disadvantage of reducing ejection stability, ejection response, and recording performance. . Therefore, there is a need for a combination of liquid medium components that are difficult to vaporize, a chemically stable recording agent, and a liquid medium that does not cause the above-mentioned drawbacks.
特に、記録に使用する飛翔液滴を、熱エネルギーを利用
して形成する場合、上記の比較的緩慢な化学変化や、溶
剤分の気化の他に、液有形成時に記録液に加えられた熱
エネルギーが、インク中の溶剤成分を急激に気化して焦
げ付きを起こしこの焦げ付きによる固形分、を吐出オリ
フィス内において発生させたシ吐出オリフィス内の記録
液を加熱して化学変化を激化させるので、その結果、吐
出安定性、吐出応答性及び記録性等を損なう度合が顕著
となる。また、連続印字時に、液滴形成のために加えら
れた熱エネルギーが、吐出オリフィス周辺に蓄積されて
長時間連続印字性を損なう弊害もある。In particular, when the flying droplets used for recording are formed using thermal energy, in addition to the relatively slow chemical changes mentioned above and the vaporization of the solvent, the heat applied to the recording liquid when the liquid is formed is The energy rapidly vaporizes the solvent components in the ink, causing scorching, and this scorching causes solid content to be generated in the ejection orifice.The energy then heats the recording liquid in the ejection orifice and intensifies the chemical change. As a result, the degree to which ejection stability, ejection responsiveness, recording performance, etc. are impaired becomes significant. Furthermore, during continuous printing, thermal energy applied to form droplets accumulates around the ejection orifice, impairing long-term continuous printing.
（発明が解決しようとする課題）
本発明は、上記のような、熱エネルギーを利用して吐出
オリフィスからインク滴を吐出させて記録を行なうイン
クジェット記録装置用記録液の問題点を解消すること、
即ち、熱エネルギーが加えられても、記録液成分の焦げ
付きや、化学変化による固形分の発生を防ぐと共に物性
値つ変化も防いで、吐出安定性、吐出応答性、記録性及
び長時間連続印字性などが＾好で、滲みやカスレが無く
鮮明な高品位の印字による安定した記鎌を可能とする熱
エネルギーを利用したインクジェット記録用の記録液の
提供を目的とする。(Problems to be Solved by the Invention) The present invention aims to solve the above-mentioned problems with a recording liquid for an inkjet recording device that performs recording by ejecting ink droplets from an ejection orifice using thermal energy.
In other words, even when heat energy is applied, it prevents the recording liquid components from burning and solid content due to chemical changes, and also prevents changes in physical properties, improving ejection stability, ejection response, recording performance, and long-term continuous printing. The purpose of the present invention is to provide a recording liquid for inkjet recording using thermal energy that has good properties and enables stable recording with clear, high-quality printing without bleeding or fading.
（課題を解決するための手段）
上記目的を達成するために、本発明のインクジェット記
録液は、熱エネルギーを利用して、液路に供給されてい
る記録液体を、前記液路に連通ずる吐出口より吐出し飛
翔液滴を形成して記録を行なうインクジェット記録装置
用の記録液に於いて、トリメチロールプロパンを含有す
ることを特徴とするものである。(Means for Solving the Problems) In order to achieve the above object, the inkjet recording liquid of the present invention utilizes thermal energy to direct the recording liquid supplied to the liquid path into a jet that communicates with the liquid path. A recording liquid for an inkjet recording apparatus that performs recording by forming flying droplets discharged from an outlet is characterized by containing trimethylolpropane.
即ち、本発明のインクジェット記録液は、記録像を形成
する成分である記録剤と、記録剤を溶解又は分散させる
ための液媒体に、トリメチロールプロパンが加えられた
もので、また必要に応じて各種添加剤が加えられるもの
である。That is, the inkjet recording liquid of the present invention has trimethylolpropane added to a recording agent, which is a component for forming a recorded image, and a liquid medium for dissolving or dispersing the recording agent. Various additives may be added.
本発明の記録液に使用するトリメチロールプロパンの好
ましい含有量は、記録液全重量に対してＯ，１〜５０重
量％であり、より好適には、５〜３０重量％の範囲でお
る。The preferred content of trimethylolpropane used in the recording liquid of the present invention is 1 to 50% by weight, more preferably 5 to 30% by weight, based on the total weight of the recording liquid.
また本発明の記録液に使用する液媒体としては、従来か
ら本発明に関わる技術分野で一般的に使用されている水
或は下記のような非水系液体を使用することが出来る。Further, as the liquid medium used in the recording liquid of the present invention, water or a non-aqueous liquid as described below, which has conventionally been commonly used in the technical field related to the present invention, can be used.
例、ｔばメチルアル；−ル、エチルアルコールｎ−７’
ａｋ”ルアルコール、ベンジルアルコール等の炭素数１
〜１Ｑのアルキルアルコール系溶剤、ニチレングリコー
ル、フロピレンゲリコール、グリセリン等の多価アルコ
ール系溶剤、テトラヒドロフラン、ジオキサン等の環状
エーテル系溶剤、その他トリエタノールアミン、ジメチ
ルホルムアミド等のアミン系、アミド系、Ｎ−メチル−
２−ピロリドン、１．３−ジメチル−２−イミダゾリジ
ノン等の倉窒素複素環系、等の各種の溶剤が挙げられる
。これらの列挙した液媒体は、使用される記録用や添加
剤との親和性及び記録液としての前述の諸特性を満足し
得るように適宜選択して使用されるものであるが、更に
、所望の特性を有する記録液を調合するために、必要に
応じて適宜２種以上を混合してもヨイ。トリメチロール
ブロノ（ンは、特に吸湿性に優れる丸め、水を含むか、
又は水と親和性の強い溶剤系を選択するのが望ましい。Examples, methyl alcohol, ethyl alcohol n-7'
ak” alcohol, benzyl alcohol, etc. with a carbon number of 1
~1Q alkyl alcohol solvents, polyhydric alcohol solvents such as nitylene glycol, phlopylene gellicol, and glycerin, cyclic ether solvents such as tetrahydrofuran and dioxane, and other amine-based and amide-based solvents such as triethanolamine and dimethylformamide. N-methyl-
Examples include various solvents such as nitrogen heterocyclic ring systems such as 2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone. The liquid media listed above are appropriately selected and used so as to satisfy the above-mentioned properties as well as compatibility with the recording medium used and additives. In order to prepare a recording liquid having the following characteristics, two or more types may be mixed as necessary. Trimethylol bromine is a particularly hygroscopic round, containing water or
Alternatively, it is desirable to select a solvent system that has a strong affinity for water.
また、本発明の記録液に使用する記録用としては、長時
間放置による意向や記録液タンク内での沈降、凝集、更
には供給管や吐出オリフィスの目詰まシを起こさない様
に前記液媒体組成分や添加剤との関係を考慮すると共に
、被記録材の特性に応じてその記録条件に適合するよう
に適宜選択し危ければならないが、従来より知られてい
る染料や顔料の多くのものが有効であシ、トリメチロー
ルプロパン、及び前記のトリメチロールプロパンと混合
し得る溶剤群の中から選ばれた溶剤に安定に溶解、又は
分散可能なものであればよい。In addition, when used for recording with the recording liquid of the present invention, the liquid medium should be carefully prepared so as to prevent it from leaving for a long time, sedimentation, agglomeration in the recording liquid tank, and clogging of the supply pipe and discharge orifice. In addition to considering the relationship with the composition and additives, it is necessary to make appropriate selections to suit the recording conditions according to the characteristics of the recording material, but many of the dyes and pigments known in the past Any material may be used as long as it is effective and can be stably dissolved or dispersed in a solvent selected from the group consisting of trimethylolpropane and the solvents that can be mixed with trimethylolpropane.
本発明の記録液は、上記の成分を基本構成成分とし、そ
れ自体優れた性質を有するものであるが、更に一層顕著
な記録特性を具備せしめる為に、種々の添加剤が添加さ
れても良い。このような添加剤としては、例えば粘度調
整剤、表面張力調整剤、比抵抗値調整剤などが挙げられ
る。The recording liquid of the present invention has the above-mentioned components as its basic constituents and has excellent properties in itself, but various additives may be added in order to provide even more remarkable recording properties. . Examples of such additives include viscosity modifiers, surface tension modifiers, resistivity modifiers, and the like.
（作 用）
本発明の記録液に使用するトリメチロールプロパンは、
常温では固体であるが、沸点が高く、しかも水や、アル
コール類、グリコール類、等の各種有機溶剤に対して優
れた溶解度を示し、その溶液は、溶剤の揮発によっても
、容易に固化しない。更にトリメチロールプロパンの溶
液は、各種染料に対する溶解力や、各種顔料に対する分
散安定性に優れている。このために、記録液を構成する
成分の一部が蒸発してしまっても、ノズルの目詰まシを
起こす心配が全く無い。(Function) The trimethylolpropane used in the recording liquid of the present invention is
Although it is solid at room temperature, it has a high boiling point and exhibits excellent solubility in water and various organic solvents such as alcohols and glycols, and its solution does not easily solidify even when the solvent evaporates. Furthermore, trimethylolpropane solutions have excellent dissolving power for various dyes and dispersion stability for various pigments. Therefore, even if some of the components constituting the recording liquid evaporate, there is no fear that the nozzles will become clogged.
この様に記録液中にトリメチロールプロパンを含有する
と、低温から高温に至る広範囲な温度範囲にわたって、
記録液の保存性、吐出安定性、吐出応答性、長時間連続
記録性に於いて良好な結果が得られる。特に、非動作状
態で放置された後の初期吐出性、及び長時間連続記録時
の記録安定性に於いて卓越した効果を発揮する。In this way, when trimethylolpropane is contained in the recording liquid, over a wide temperature range from low to high temperatures,
Good results can be obtained in terms of recording liquid storage stability, ejection stability, ejection response, and long-term continuous recording performance. In particular, it exhibits outstanding effects in initial ejection performance after being left in a non-operating state and recording stability during long-term continuous recording.
（実施例） 以下、本発明を、実施例により更に具体的に説明する。(Example) EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples.
以下において、「チ」は、全て「重量％」を示すものと
する。In the following, all "chi" indicates "wt%".
実施例
Ｃ，１，ダイレクトブラック１５４ ５
’チ２−ピロリドン １０％ト
リメチロールプロパン １０チ水
’
ｉ’５％上記の組成で充分に攪拌を行なった後、１μｍ
以上の不溶性成分の粒子を濾過によって取シ除き、本発
明の記録液を調製した。Example C, 1, Direct Black 154 5
2-pyrrolidone 10% trimethylolpropane 10% water
'
i'5% After sufficient stirring with the above composition, 1 μm
The above particles of insoluble components were removed by filtration to prepare a recording liquid of the present invention.
実施例２
Ｃ，１，フードブラック２ ４％エチ
レングリコール エａ％トリメ
チロールプロパン エｏ％Ｎ−メチル
ー２−ピロリドン １０％水
６１’ｌ上記の
組成で、実施例１と同様にして本発明の記録液を調製し
た。Example 2 C,1, Food Black 2 4% Ethylene Glycol Air% Trimethylolpropane Eo% N-Methyl-2-pyrrolidone 10% Water
61'l A recording liquid of the present invention was prepared in the same manner as in Example 1 with the above composition.
実施例３゜
ｃ、ｒ、アシッドブルー９
５％エチレングリ；−ル ２
０％トリメチロールプロパン １ｏ
チ水
６４％上記の組成で、実施例１と同様にして本発明の
記録液を調製した。Example 3゜c, r, acid blue 9
5% ethylene glycol 2
0% trimethylolpropane 1o
Chi water
64% A recording liquid of the present invention was prepared in the same manner as in Example 1 with the above composition.
実施例４゜ Ｃ，１，アシッドイエロー２３ エチレングリコール ジエチレングリコール トリメチロールプロパン 水 上記の組成で、実施例 の記録液をｔｌ裳した。Example 4゜ C, 1, acid yellow 23 ethylene glycol diethylene glycol trimethylolpropane water With the above composition, Example A recording liquid of 100 liters was applied.
実施例５゜ Ｃ１−アシッドレッド８７ プロピレングリコール トリメチールプロパン 水 上記の組成で、 ６ ％ ５チ １５ ％ ７４％ 実施例１と同様にして本発明 ６％ ２０チ １０チ ５％ ５９％ １と同様にして本発明 の記録液を調製した。Example 5゜ C1-Acid Red 87 Propylene glycol trimethylpropane water With the above composition, 6% 5chi 15% 74% The present invention was carried out in the same manner as in Example 1. 6% 20 chi 10 chi 5% 59% The present invention in the same manner as 1. A recording liquid was prepared.
また、上記の各実施例と比較するために、実施例１〜５
のトリメチロールプロパンを、各実施例で使用されてい
る水以外の有機溶剤に置換（複数の有機溶剤を使用して
いるものは各有機溶剤の比率を維持して置換）して、実
施例１〜５と同様の処理により、実施例１〜５に対応し
て、比較例１〜５の記録液を調製した。In addition, in order to compare with each of the above examples, Examples 1 to 5
Example 1 was obtained by replacing trimethylolpropane with an organic solvent other than water used in each example (in cases where multiple organic solvents are used, the ratio of each organic solvent is maintained). Recording liquids of Comparative Examples 1 to 5 were prepared in accordance with Examples 1 to 5 by the same treatment as in Examples 1 to 5.
そして、まず、上記の各実施例の記録液について長期保
存性のテストを行なった。即ち、実施例１〜５の記録液
を、−３０’Ｃと６０℃で６ケ月保存した後の状態を観
察したが、不溶分の析出はみられず、ま九液の物性や色
調にも変化がなかった。First, a long-term storage stability test was conducted on the recording liquids of each of the above examples. That is, the state of the recording liquids of Examples 1 to 5 after being stored at -30'C and 60°C for 6 months was observed, and no precipitation of insoluble matter was observed, and no changes were observed in the physical properties or color tone of the liquids. There was no change.
次に、上記の各実施例と各比較例の記録液について、吐
出安定性と吐出応答性のテストを行なった。尚、これら
のテストは、発熱素子をインク吐出のエネルギー源とし
て利用したオンデマンド型のインクジェットプリンタ（
オリフィスサイズφ６０ ／ａｎ 、ノズル数１２本、
駆動電圧１５Ｖ、周波数１ＫＨｚ） を用いて行なっ
た。Next, ejection stability and ejection responsiveness tests were conducted for the recording liquids of each of the above-mentioned Examples and Comparative Examples. These tests were conducted using an on-demand inkjet printer that uses a heating element as an energy source for ink ejection.
Orifice size φ60/an, number of nozzles: 12,
The test was carried out using a driving voltage of 15 V and a frequency of 1 KHz).
これらテストの内容と結果は以下の通シである。The contents and results of these tests are as follows.
■ 吐出安定性
５℃、４０℃の雰囲気中で、それぞれ２４時間の連続吐
出テストを行なったが、実施例の記録液は、いずれの条
件でも、終始安定した記録が可能でちったが、比較例の
記ｅｍｕ。■ Ejection stability Continuous ejection tests were conducted for 24 hours in an atmosphere of 5°C and 40°C, and the recording liquid of the example was able to perform stable recording from beginning to end under both conditions. An example of emu.
長時間吐出を行なわせると、吐出不良となシ、印字にカ
スレを生じた。When the ink was ejected for a long period of time, ejection failure occurred and prints were blurred.
■ 吐出応答性
室温で、２秒毎の間欠吐出と、２ケ月間放置後の吐出に
ついて調べたが、実施例の記録液は、いずれの場合もオ
リアイス先端での目詰まりがなく、安定で均一に記録が
可能であったのに対し、比較例の各記録液は、２ケ月間
放置後の吐出では、オリフィスに目詰まシを生じ、極度
の吐出不良となった。■ Ejection response At room temperature, intermittent ejection every 2 seconds and ejection after being left for 2 months were investigated, and in both cases, the recording liquid of the example was stable and uniform without clogging at the tip of the oriice. However, when the recording liquids of the comparative examples were ejected after being left for two months, the orifices were clogged, resulting in extremely poor ejection.
（発明の効果）
本発明は紙上の通りであり、長期間保存しても或は熱エ
ネルギーが加えられても固形分を生じることがないので
オリフィスに目詰まシを起すことがなく且つ物性値も変
化しないので、長時間連続的に吐出が良好な状態を維持
できて、滲みやカスレの無い鮮明な高品位の印字による
安定した記録を連続長期的に可能とする効果がおる。(Effects of the Invention) The present invention is as described on paper, and does not generate solid content even when stored for a long period of time or when thermal energy is applied, so the orifice does not become clogged and the physical property values do not change. Since the inkjet ink does not change, it is possible to maintain a good ejection condition continuously for a long time, which has the effect of making stable recording with clear, high-quality printing without bleeding or fading possible over a long period of time.
特 許出願 人 三菱鉛兼株式会社Patent applicant: Mitsubishi Chikane Co., Ltd.
Claims (1)
録液体を、前記液路に連通する吐出口より吐出し飛翔液
滴を形成して記録を行なうインクジェット記録装置用の
記録液に於いて、トリメチロールプロパンを含有するこ
とを特徴とするインクジェット記録液。 ２、前記トリメチロールプロパンの含有量を記録液の全
重量に対して０．１〜５０％の範囲とした請求項１記載
のインクジェット記録液。[Claims] 1. An inkjet recording device that performs recording by ejecting recording liquid supplied to a liquid path from an ejection port communicating with the liquid path to form flying droplets using thermal energy. An inkjet recording liquid characterized by containing trimethylolpropane. 2. The inkjet recording liquid according to claim 1, wherein the content of the trimethylolpropane is in the range of 0.1 to 50% based on the total weight of the recording liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1291572A JPH03152171A (en) | 1989-11-09 | 1989-11-09 | Ink jet recording liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1291572A JPH03152171A (en) | 1989-11-09 | 1989-11-09 | Ink jet recording liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03152171A true JPH03152171A (en) | 1991-06-28 |
Family
ID=17770660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1291572A Pending JPH03152171A (en) | 1989-11-09 | 1989-11-09 | Ink jet recording liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03152171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018044025A (en) * | 2016-09-12 | 2018-03-22 | 日本化薬株式会社 | Ink and inkjet recording method |
-
1989
- 1989-11-09 JP JP1291572A patent/JPH03152171A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018044025A (en) * | 2016-09-12 | 2018-03-22 | 日本化薬株式会社 | Ink and inkjet recording method |
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