JPS62149771A - Dry lithographic printing ink composition - Google Patents
Dry lithographic printing ink compositionInfo
- Publication number
- JPS62149771A JPS62149771A JP60290418A JP29041885A JPS62149771A JP S62149771 A JPS62149771 A JP S62149771A JP 60290418 A JP60290418 A JP 60290418A JP 29041885 A JP29041885 A JP 29041885A JP S62149771 A JPS62149771 A JP S62149771A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- boiling point
- lithographic printing
- low
- printing
- 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
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- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水なし平版印刷用インキ組成物に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an ink composition for waterless lithographic printing.
現在平版印刷は、油性インキと水の反撥性を利用して、
親油的な画線部に油性インキを、また親水性を有する非
画線部には水を供給することによって印刷が行なわれて
いる。Currently, lithographic printing uses the repellency of oil-based ink and water.
Printing is carried out by supplying oil-based ink to the lipophilic image area and water to the hydrophilic non-image area.
これに対して水なし平版印刷では、水なし平版印刷用イ
ンキと特殊シリコーンゴムとの反撥性を利用するもので
、親油性を有する画線部には水なし平版印刷用インキを
供給し、非画線部では特殊シリコーンがこの水なし平版
印刷用インキを反撥して印刷が行なわれる。On the other hand, waterless lithographic printing utilizes the repellency of waterless lithographic printing ink and special silicone rubber, and the waterless lithographic printing ink is supplied to the oleophilic image area, and the non-waterless lithographic printing ink is In the printing area, special silicone repels this waterless planographic ink and printing is performed.
従来水なし平版印刷用インキとしては1通常インキのタ
ック値を上げてインキ自身の凝集力を高めることによっ
て、特殊シリコーンとの反撥性を付与口たものが知られ
ている。ところがこのようなインキは、普通の平版印刷
で用いられる油性インキにくらべてやや硬い。そのため
特に冬場の印刷では、室温が低いためにインキがさらに
硬くなシ、インキつぼからのインキ供給性や印刷機上の
ロール間でのインキ転位性が悪くなって印刷物の品質を
損ねたシする。Conventionally, as inks for waterless planographic printing, there are known inks that are made repellent to special silicones by increasing the tack value of a normal ink and increasing the cohesive force of the ink itself. However, this type of ink is slightly harder than the oil-based ink used in ordinary planographic printing. Therefore, especially when printing in winter, the ink becomes even harder due to the low room temperature, and the ink supply from the ink fountain and ink transfer between rolls on the printing press deteriorates, which impairs the quality of printed matter. .
このようなトラブルをなくすために、冬場の低い室温で
も流動するような硬さに設計された冬用インキと、逆に
室温が高くなる夏場には、シリコーンとのインキ反撥性
を重視したインキに設計された夏用インキと、さらにそ
れらの中間的な特性全有する春秋用インキを用意してそ
れぞれ使い分けてきた。In order to eliminate such troubles, we use winter inks that are designed to have a hardness that allows them to flow even at low room temperatures in the winter, and conversely, in the summer when room temperatures are high, we use inks that emphasize ink repellency with silicone. We have prepared a designed summer ink and a spring/autumn ink that has all of the characteristics intermediate between the two, and have used each ink accordingly.
ところが空調設備が置かれていても、冬場の空調前後の
温度差は激しく大きい。そして印刷機は空調を開始して
もすぐには昇温しない。このような状態で印刷を開始す
るとインキの供給性が悪くまたインキのロール転位性が
悪いために、印刷品質が低下する。このような印刷スタ
ート時のトラブルを解消する手段としては、印刷機をヒ
ーター等で温める方法や、インキ希釈液をロール上にス
プレーする方法がある。ところが前者の場合では昇温に
時間金髪することや、特に小型印刷機等ではそのような
加熱装置がないのが普通であシ実用性に欠ける。また後
者のスプレ一方法では、水なし平版印刷時に高沸点のイ
ンキの溶媒を添加すると、インキのシリコーン反撥性が
低下し、その結果印刷物に地汚れが発生したシして実用
上問題がある。However, even if air conditioning equipment is installed, the temperature difference between before and after the air conditioning in winter is extremely large. The temperature of the printing press does not rise immediately even after the air conditioning is started. If printing is started in such a state, the ink supply performance is poor and the roll dislocation property of the ink is poor, resulting in a decrease in printing quality. As a means of solving such troubles at the start of printing, there are a method of warming the printing machine with a heater, etc., and a method of spraying a diluted ink onto the roll. However, in the former case, it takes a long time to raise the temperature, and small printing presses in particular do not usually have such a heating device, making it impractical. Furthermore, in the latter spray method, if a high boiling point ink solvent is added during waterless planographic printing, the silicone repellency of the ink decreases, resulting in scumming on printed matter, which poses a practical problem.
〔発明が解決しようとする問題点〕
本発明は上述のごとき従来技術の諸欠点に鑑み創案され
たもので、その目的は水なし平版印刷用インキの低温時
流動性を改善し、冬場の印刷を容易にすると同時に高温
時にも良好に使用できる水なし平版印刷用インキを提供
することにある。[Problems to be Solved by the Invention] The present invention was devised in view of the above-mentioned drawbacks of the prior art, and its purpose is to improve the flowability of waterless lithographic printing ink at low temperatures, thereby improving printing performance in winter. An object of the present invention is to provide a waterless lithographic printing ink that can be used easily even at high temperatures.
かかる本発明の目的は沸点が150℃以上の高沸点溶剤
と、沸点が一10°C〜130℃の低沸点溶剤を含有す
ることを特徴とする水なし平版印刷用インキ組成物によ
シ達成される。The object of the present invention is achieved by an ink composition for waterless lithographic printing characterized by containing a high boiling point solvent with a boiling point of 150°C or higher and a low boiling point solvent with a boiling point of 110°C to 130°C. be done.
すなわち9本発明の水なし平版印刷用インキ組成物は、
ビヒクル樹脂、顔料、添加剤等と上記のごとき沸点の異
なる特定の2種の溶剤とを主成分とするもので、使用さ
れるビヒクル樹脂としては凝集力の大きいものを用いる
ことにょシインキ全体の凝集力が向上して、シリコーン
版面でのインキ反撥性を付与させるようにするのがよい
。That is, the ink composition for waterless lithographic printing of the present invention is
The main components are vehicle resin, pigments, additives, etc., and two specific solvents with different boiling points as mentioned above.The vehicle resin used must have a large cohesive force to coagulate the entire ink. It is preferable that the strength is improved to impart ink repellency on the silicone printing plate.
本発明において用いられる高沸点溶剤は沸点が150℃
以上のもの、好ましくは200℃以上。The high boiling point solvent used in the present invention has a boiling point of 150°C
above, preferably 200°C or above.
550℃以下のものがよい。この高沸点溶剤は。A temperature of 550°C or lower is preferable. This high boiling point solvent.
印刷が完了してインキが紙の上に乗ってから徐々に紙に
浸透する適度の浸透性と必要な蒸発性を確保する上で重
要であり、沸点が150℃未満の場合には印刷機上での
蒸発が起こシ、インキの流動性が低下したシ、固化して
正常な印刷ができなくなるため好ましくない。該高沸点
溶剤のインキ組成物中の含有量は特に限定されないが、
好ましくは15〜45重量係の範囲で選択するのがよい
。It is important to ensure that the ink gradually penetrates into the paper after printing is completed and the ink has the necessary evaporation ability. This is undesirable because it causes evaporation, reduces the fluidity of the ink, and solidifies the ink, making it impossible to print normally. The content of the high boiling point solvent in the ink composition is not particularly limited, but
Preferably, it is selected in the range of 15 to 45 weight coefficients.
本発明で使用可能な高沸点溶剤を具体的に挙げると1例
えば“ダイヤレン168″、(沸点−270〜510’
O,三菱油化■製)、“5号ンルペント″(沸点=25
5〜287℃1日本石油■製)。Specific examples of high-boiling point solvents that can be used in the present invention include 1. For example, "Dialen 168",
O, made by Mitsubishi Yuka ■), "No. 5 Nlupento" (boiling point = 25
5-287℃ 1 Nippon Oil ■).
14号ンルベント″(沸点=255〜266°C)。No. 14 Bento'' (boiling point = 255-266°C).
”5号ソルベント”(沸点=276〜313°C)。"No. 5 Solvent" (boiling point = 276-313°C).
“0号ソルベントM″(沸点=219〜247°C)(
いずれも日本石油■製)などがあり、これらは単独又は
2種以上混合、して使用される。“No. 0 Solvent M” (boiling point = 219-247°C) (
(all manufactured by Nippon Oil Corporation), and these are used alone or in combination of two or more.
本発明において使用される低沸点溶剤は水なしめり、か
つ七の沸点が−11J O−牲キ噌Cで゛りゐものであ
って、具体例をあげると、n−ブタン(沸点−0,5℃
)、n−ペンタン、n−ヘキサン。The low boiling point solvent used in the present invention is water diluted and has a boiling point of -11 5℃
), n-pentane, n-hexane.
n−へブタン、ベンゼン、トルエン、キシレンのような
脂肪族および芳香族炭化水素類、メチルアルコール、n
−7’ロピルアルコール、 iso −7”ロビルアル
コール、n−ブチルアルコール、1so−ブチルアルコ
ールなどのアルコール類、アセトン。Aliphatic and aromatic hydrocarbons such as n-hebutane, benzene, toluene, xylene, methyl alcohol, n
Alcohols such as -7'ropyl alcohol, iso-7''ropyl alcohol, n-butyl alcohol, 1so-butyl alcohol, acetone.
メチルエチルケトン、アセチルアセトンなどのケトン類
、メチルアセテート、エチルアセテート。Ketones such as methyl ethyl ketone and acetylacetone, methyl acetate, and ethyl acetate.
n−ブチルアセテートなどのエステル類、四塩化炭素ク
ロロホルム、塩化メチレンなどの塩素化炭化水素類など
があげられるが、経済性や臭気、性能mからn−ペンタ
ン、n−ヘキサン、塩化メチレン、n−へブタンなどが
好適である。Examples include esters such as n-butyl acetate, chlorinated hydrocarbons such as carbon tetrachloride chloroform, and methylene chloride, but due to economic efficiency, odor, and performance, n-pentane, n-hexane, methylene chloride, Hebutane and the like are preferred.
低沸点溶剤の沸点が一10℃未満の場合は、インキ中に
有機溶媒を含有させることが困難であり。When the boiling point of the low boiling point solvent is less than 110° C., it is difficult to incorporate the organic solvent into the ink.
蒸発が激しいために低温時でもすぐにインキが硬また低
沸点溶剤の沸点が−→°Cを越える場合は、低温時にお
いては勿論、高温時(30°C〜40’C)でもインキ
中の有機溶媒がほとんど蒸発しないで、インキ中に多量
残ってしまうために、インキの地汚れ性が低下し印刷品
質を悪くする。低温時はインキ中の有機溶剤の蒸発が遅
く、高温時には速かに蒸発が行なわれるような有機溶剤
となすためには、沸点が好ましくは一り0℃〜125°
0゜さらに好ましくは一10°C〜i o o ’aの
ものを使用するのがよい。Due to intense evaporation, the ink quickly becomes hard even at low temperatures.If the boiling point of the low-boiling solvent exceeds -→°C, the ink may harden not only at low temperatures but also at high temperatures (30°C to 40'C). Since the organic solvent hardly evaporates and remains in a large amount in the ink, the scumming resistance of the ink decreases and print quality deteriorates. In order to create an organic solvent in the ink that evaporates slowly at low temperatures and evaporates quickly at high temperatures, the boiling point is preferably between 0°C and 125°C.
0°C, more preferably -10°C to i o o'a.
該低沸点溶剤の水なし平版印刷用インキ組成物中の含有
率は0.1重量〜20重量となすのがよく。The content of the low boiling point solvent in the waterless lithographic printing ink composition is preferably 0.1 to 20 weight.
さらに好ましくは1〜16重量%である。この含有量が
0.1重量%未満ではインキの改質効果がほとんどなく
、また20重量%を越えると版上でのインキ中に有機溶
剤が残留して、インキの耐地汚れ性が低下し印刷物に地
汚れが発生する。More preferably, it is 1 to 16% by weight. If the content is less than 0.1% by weight, there will be little effect of modifying the ink, and if it exceeds 20% by weight, the organic solvent will remain in the ink on the plate, reducing the stain resistance of the ink. Scratches appear on printed matter.
本発明に係るインキ組成物の作シ方としては。How to prepare the ink composition according to the present invention.
特に限定されないが、好ましくはビヒクル樹脂。Although not particularly limited, vehicle resin is preferred.
植物油、顔料、高沸点溶剤、添加剤等からなる水なし平
版印刷用インキを作った後9次に低沸点溶剤を添加する
のがよい。After preparing a waterless lithographic printing ink consisting of vegetable oil, pigment, high boiling point solvent, additives, etc., it is preferable to add a low boiling point solvent.
ここで水なし平版印刷用インキの作り方は、一般の平版
印刷用インキと同様であるが、低沸点溶剤を添加すると
きn−ブタンやn−ペンタンのような沸点の特に低い溶
剤では、混合中に低沸点溶剤が蒸発しないように工夫す
ることが望ましい。Here, the method of making waterless lithographic printing ink is the same as that of general lithographic printing ink, but when adding a low-boiling point solvent, it is difficult to make the waterless lithographic printing ink during mixing. It is desirable to take measures to prevent low boiling point solvents from evaporating.
例えば、低沸点溶剤の沸点よシ低い温度で調製すること
により低沸点溶剤を逃すことなく水なし平版印刷用イン
キに含有させることができる。For example, by preparing the ink at a temperature lower than the boiling point of the low-boiling point solvent, the low-boiling point solvent can be incorporated into the waterless lithographic printing ink without escaping.
本発明で用いられるビヒクル樹脂としては、ロジン変性
フェノール樹脂やアクリル酸変性2エチルヘキシル重合
体、アルキッド樹脂、ロジンエステル樹脂9召油樹脂等
、平版印刷用インキ用途として従来よシ用いられている
ものが使用できる。Vehicle resins used in the present invention include those conventionally used for lithographic printing inks, such as rosin-modified phenol resins, acrylic acid-modified 2-ethylhexyl polymers, alkyd resins, rosin ester resins, and oil resins. Can be used.
また着色剤としては、従来一般の無機有機の顔料を使用
することができ、さらに植物油としてはアマニ油、桐油
、サフラワ油等の乾性又は半乾性油を使用することがで
きる。その他添加剤としては、従来一般に用いられてい
るワックス、ドライヤーなどを必要に応じて加えること
ができる。As the colorant, conventional inorganic and organic pigments can be used, and as the vegetable oil, dry or semi-drying oils such as linseed oil, tung oil, and safflower oil can be used. As other additives, conventionally commonly used waxes, dryers, etc. can be added as necessary.
本発明の水なし平版印刷用インキ組成物は上述のごとく
構成したので、従来の水なし平版印刷用インキに見られ
る諸欠点を確す消することができると共に以下に示すよ
うな優れた作用効果を奏するものである。Since the ink composition for waterless lithographic printing of the present invention is constructed as described above, it can definitely eliminate the various defects seen in conventional waterless lithographic printing inks, and also has the following excellent effects: It is something that plays.
(1)冬場の印刷開始時に印刷機を加熱したり。(1) Heating the printing press when starting printing in winter.
高沸点溶剤をスプレーする必要がない。No need to spray high boiling point solvents.
(2) インキを使用温度によって何種類も使い分け
なくてもよい。(2) There is no need to use different types of ink depending on the operating temperature.
(3) どのような条件でもインキのロール転位性が
よい。(3) Good roll dislocation properties of the ink under any conditions.
(4)チューブ供給性が大幅に向上する。(4) Tube supplyability is greatly improved.
に示す各種低沸点溶剤全2重量係ずつ添加し、インキヘ
ラでよく練った。このときの温度は有機溶剤の蒸発を防
ぐために15゛C以下にして行った。A total of 2 parts by weight of various low-boiling point solvents shown in the following were added and thoroughly kneaded with an ink spatula. The temperature at this time was kept below 15°C to prevent evaporation of the organic solvent.
このようにして調製された4種類(Nl12〜凰5)の
インキについてフロー値(流動性)とタック値(粘性)
を、温度を15〜35℃と変化させて測定したところ表
2.乙に示した様に、フロー値ではいずれの場合も全て
の温度で低沸点溶剤と添加シテいない随1のインキにく
らべて大きくなり低温特性が改善されることがわかった
。また一方タツク値は、いずれのサンプルも全ての温度
で低沸点溶剤を無添加の隘1と同じ値を示しておシ、こ
れはインコメ−ターのロール上で1分以外にインキ中の
低沸点溶剤がほとんど蒸発してなくなったためである。Flow values (fluidity) and tack values (viscosity) of the four types of inks (Nl 12 to 凰 5) prepared in this way
Table 2. was measured by changing the temperature from 15 to 35°C. As shown in Figure B, it was found that the flow value was greater in all cases at all temperatures than the first ink without the addition of a low-boiling point solvent, and the low-temperature properties were improved. On the other hand, the tack value for all samples showed the same value as No. 1 without the addition of low-boiling point solvents at all temperatures. This is because most of the solvent has evaporated.
これらの結果は印刷中に添加溶剤が蒸発し、印刷物に悪
影響を与えないことを意味している。These results mean that the additive solvent evaporates during printing and does not adversely affect the printed matter.
随5のインキを出口径15−のアルミニウム製チューブ
に詰めたものを用意し、リコーオートプリンター260
0で水なし平版印刷を行なったところ、インキのチュー
ブ押出しも容易であり、かつ室温15°Cから40″o
fで徐々に昇温しながら印刷したが、いずれの温度でも
印刷がスムースで好ましい印刷物が得られた。Prepare an aluminum tube with an outlet diameter of 15 mm filled with No. 5 ink, and use the Ricoh Auto Printer 260.
When waterless lithographic printing was performed at 0°C, it was easy to extrude the ink into tubes, and it was possible to extrude the ink from 15°C to 40°C.
Printing was carried out while gradually increasing the temperature at f, but printing was smooth and favorable printed matter was obtained at any temperature.
一方、有機溶媒を添加していないlalで同様のテスト
ヲ行なったところ、室温15°C付近ではインキチュー
ブの押し出し性が悪く、また印刷機上でインキのロール
転位性が悪いために、印刷品質の悪い印刷物しか得られ
なかった。On the other hand, when we conducted a similar test using lal to which no organic solvent was added, we found that the extrusion of the ink tube was poor at room temperature around 15°C, and the roll dislocation of the ink on the printing press was poor, resulting in poor print quality. I only got bad prints.
ここで用いた水なし平版は2紙ベースのシリコーン版に
電子写真法によってトナー画像を形成したものである。The waterless lithographic plate used here is a two-paper-based silicone plate on which a toner image is formed by electrophotography.
またフロー値は東洋精機■製のスプレッドメーターで測
定した。タンク値は熊谷理機工業■製イ/コメーターB
−45i用いて測定くものて゛とる。In addition, the flow value was measured using a spread meter manufactured by Toyo Seiki ■. The tank value is made by Kumagai Riki Kogyo ■/Kometer B
-45i to take measurements.
表−1 インキ組成Table-1 Ink composition
Claims (2)
0℃〜130℃の低沸点溶剤を含有することを特徴とす
る水なし平版印刷用インキ組成物。(1) A high boiling point solvent with a boiling point of 150℃ or higher and a boiling point of -1
An ink composition for waterless lithographic printing, characterized in that it contains a low boiling point solvent of 0°C to 130°C.
重量%〜20重量%であることを特徴とする特許請求の
範囲第1項記載の水なし平版印刷用インキ組成物。(2) The content of the low boiling point solvent in the ink composition is 0.1
The ink composition for waterless lithographic printing according to claim 1, characterized in that the ink composition is from % to 20% by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60290418A JPS62149771A (en) | 1985-12-25 | 1985-12-25 | Dry lithographic printing ink composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60290418A JPS62149771A (en) | 1985-12-25 | 1985-12-25 | Dry lithographic printing ink composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62149771A true JPS62149771A (en) | 1987-07-03 |
Family
ID=17755770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60290418A Pending JPS62149771A (en) | 1985-12-25 | 1985-12-25 | Dry lithographic printing ink composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62149771A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03281674A (en) * | 1990-03-30 | 1991-12-12 | Toyo Ink Mfg Co Ltd | Dry lithographic printing ink |
-
1985
- 1985-12-25 JP JP60290418A patent/JPS62149771A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03281674A (en) * | 1990-03-30 | 1991-12-12 | Toyo Ink Mfg Co Ltd | Dry lithographic printing ink |
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