JPH05117564A - Emulsion ink for perforated plate printing - Google Patents

Emulsion ink for perforated plate printing

Info

Publication number
JPH05117564A
JPH05117564A JP31199891A JP31199891A JPH05117564A JP H05117564 A JPH05117564 A JP H05117564A JP 31199891 A JP31199891 A JP 31199891A JP 31199891 A JP31199891 A JP 31199891A JP H05117564 A JPH05117564 A JP H05117564A
Authority
JP
Japan
Prior art keywords
resin
oil
ink
oil phase
emulsion
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.)
Granted
Application number
JP31199891A
Other languages
Japanese (ja)
Other versions
JP3073818B2 (en
Inventor
Naoto Shimoda
直人 霜田
Fumiaki Arai
文明 新井
Masahiro Koike
正洋 小池
Hitoshi Ueda
仁士 上田
Hiroshi Tateishi
比呂志 立石
Keisuke Asada
啓介 浅田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku Ricoh Co Ltd
Ricoh Co Ltd
Original Assignee
Tohoku Ricoh Co Ltd
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tohoku Ricoh Co Ltd, Ricoh Co Ltd filed Critical Tohoku Ricoh Co Ltd
Priority to JP31199891A priority Critical patent/JP3073818B2/en
Publication of JPH05117564A publication Critical patent/JPH05117564A/en
Application granted granted Critical
Publication of JP3073818B2 publication Critical patent/JP3073818B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE:To obtain the subject ink useful for a rotary printing machine of perforated plate, having excellent fixation, humidity dependence, emulsion stability and image quality, comprising a specific water-in-oil emulsion, by adding a resin, etc., to the oil phase. CONSTITUTION:The objective ink comprising a water-in-oil emulsion composed of 10-50wt.% oil phase such as liquid paraffin and 90-50wt.% water phase, a resin containing at least one of a phenolic and an alcoholic hydroxyl groups and having 3,000-150,000 number-average molecular weight and a gelatinizing agent (e.g. aluminum octylate) in the oil phase. The oil phase preferably has a viscosity ratio at shear rate 1/second of after gelatinization/before gelatinization of 1.5-10.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は孔版印刷用エマルジョン
インキに関し、詳しくは定着性、エマルジョン安定性に
優れた孔版印刷用エマルジョンインキに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulsion ink for stencil printing, and more particularly to an emulsion ink for stencil printing having excellent fixability and emulsion stability.

【0002】[0002]

【従来の技術】孔版印刷方式は、周知のように孔版印刷
原紙を用い、この原紙に製版を施して形成された穿孔部
を通して原紙の一方の側より他方の側へインキを移動さ
せることにより、紙などの被印刷物面に印刷を行なうも
のである。近年、輪転孔版印刷機にもマイクロコンピュ
ーター等による自動化が進み、操作が簡単になってきて
おり、これにともない、様々な環境で印刷開始直後から
良好な印刷物を入手できることが要望されている。とこ
ろで、従来の孔版印刷用インキには、インキの保存安定
性の向上やインキの紙への定着性を良好ならしめる等の
目的で樹脂が添加されている。これらの樹脂としては、
例えばフェノール樹脂、マレイン酸樹脂、石油樹脂、ア
ルキッド樹脂、ゴム誘導体樹脂などが知られているが、
これらの樹脂で十分な安定性、定着性を得るためには多
くの樹脂を必要とするのが実情である。しかし、この場
合、インキの流動性を著しく損ねることがあり、その結
果、均一な画像濃度が得られなかったり、ドラム後端部
からのインキのはみ出しが発生したり、また、得られる
画像品質の温度依存性が低下するといった欠点が認めら
れていた。
2. Description of the Related Art A stencil printing method uses a stencil printing base paper as is well known, and by moving ink from one side of the base paper to the other side through a perforation portion formed by making a plate on the base paper, Printing is performed on the surface of an object to be printed such as paper. In recent years, a rotary stencil printing machine has also been automated by a microcomputer or the like and has become easy to operate, and accordingly, it has been demanded that a good printed matter can be obtained immediately after starting printing in various environments. By the way, a resin has been added to conventional stencil printing inks for the purpose of improving the storage stability of the ink and improving the fixability of the ink on paper. These resins include
For example, phenol resin, maleic acid resin, petroleum resin, alkyd resin, rubber derivative resin, etc. are known.
In reality, many resins are required to obtain sufficient stability and fixability with these resins. However, in this case, the fluidity of the ink may be significantly impaired, and as a result, uniform image density may not be obtained, ink may be squeezed out from the rear end of the drum, and the obtained image quality may be poor. It has been recognized that there is a drawback that the temperature dependence is reduced.

【0003】[0003]

【発明が解決しようとする課題】本発明の目的は、前記
従来技術の欠点を除去し、輪転孔版印刷機において、定
着性、エマルジョン安定性に優れて、且つインキ流動性
及び画像品質の温度依存性に優れた孔版印刷用エマルジ
ョンインキを提供するものである。
SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to provide excellent fixability and emulsion stability in a rotary stencil printing machine, and to depend on temperature dependence of ink fluidity and image quality. An emulsion ink for stencil printing having excellent properties is provided.

【0004】[0004]

【課題を解決するための手段】本発明の孔版印刷用エマ
ルジョンインキは、油相約10〜50重量%と水相約9
0〜50重量%とからなる油中水型エマルジョンからな
り、かつ、該油相中に樹脂およびその樹脂のゲル化剤を
含有することを特徴としている。
The emulsion ink for stencil printing of the present invention comprises an oil phase of about 10 to 50% by weight and an aqueous phase of about 9% by weight.
It is characterized by comprising a water-in-oil emulsion consisting of 0 to 50% by weight, and containing a resin and a gelling agent for the resin in the oil phase.

【0005】本発明者らは、前記目的を達成するため、
種々研究の結果、油中水型エマルジョンの油相中に樹脂
及びその樹脂のゲル化剤を含有せしめることによって定
着性、保存安定性に優れ、インキ流動性並びに画像品質
の温度依存性に優れた効果がもたらされることを見いだ
した。本発明はそれに基づいてなされたものである。
In order to achieve the above-mentioned object, the present inventors have
As a result of various studies, by including a resin and a gelling agent for the resin in the oil phase of the water-in-oil emulsion, the fixability and storage stability were excellent, and the ink fluidity and the image quality were highly temperature-dependent. I found that the effect was brought. The present invention has been made on the basis thereof.

【0006】以下に本発明をさらに詳細に説明する。前
記エマルジョンの水相は水、電解質、防黴剤、酸化防止
剤、水蒸発防止剤など、また前記油相は油成分、乳化剤
等から構成される。これらの構成成分は、エマルジョン
の形成を阻害しない公知のものが使用される。
The present invention will be described in more detail below. The water phase of the emulsion is composed of water, an electrolyte, a fungicide, an antioxidant, a water evaporation inhibitor and the like, and the oil phase is composed of an oil component, an emulsifier and the like. Known constituents which do not inhibit the formation of emulsion are used as these constituents.

【0007】本発明の孔版印刷用エマルジョンインキ
は、前記の通り、定着性、保存安定性に優れ、且つ流動
性、画像品質温度依存性も優れるようにする為に、油相
中に樹脂及びその樹脂のゲル化剤を含有することを最大
の特徴としている。ここでの樹脂はフェノール系水酸基
もしくはアルコール系水酸基のうち少なくとも一方を有
することが望ましい。これは、樹脂がゲル化される際、
樹脂の水酸基を中心にゲル化が起こるためである。
As described above, the emulsion ink for stencil printing of the present invention is excellent in fixability and storage stability, and also in fluidity and temperature dependence of image quality. The greatest feature is that it contains a resin gelling agent. The resin here preferably has at least one of a phenolic hydroxyl group and an alcoholic hydroxyl group. This is because when the resin is gelled,
This is because gelation occurs mainly in the hydroxyl groups of the resin.

【0008】また、この樹脂は平均分子量が3000〜1500
00であることが望ましく、6000〜20000であることが更
に望ましい。これは、平均分子量が3000より以下では定
着性、保存安定性に対する効果が少なく、また、平均分
子量が150000より以上ではインキの流動性が著しく損な
われ、均一な画像が得られなかったり、孔版印刷機のド
ラム後端部からのインキのはみ出しの発生が著しくなっ
たりする為である。
Further, this resin has an average molecular weight of 3000 to 1500.
It is preferably 00, more preferably 6000 to 20000. This is because when the average molecular weight is less than 3000, there is little effect on the fixability and storage stability, and when the average molecular weight is more than 150,000, the fluidity of the ink is significantly impaired, and a uniform image cannot be obtained, or stencil printing is performed. This is because the occurrence of ink spilling out from the rear end of the drum of the machine becomes remarkable.

【0009】また、ここでのゲル化剤は、Li、Na、
K、Al、Ca、Co、Fe、Mn、Mg、Pb、Z
n、Zrなどの金属を含む有機酸塩、有機キレート化合
物、金属石鹸オリゴマーなどの、前記樹脂の水酸基と配
位結合をなすものが望ましい。例えば、オクチル酸アル
ミなどのアクチル酸金属塩、ナフテン酸マンガンなどの
ナフテン酸金属塩、ステアリン酸亜鉛などのステアリン
酸金属塩、アルミニウムジイソプロポキシドモノエチル
アセトアセテートなどの有機キレート化合物、アルミニ
ウムオキサイドオクトエートなどの金属石鹸オリゴマー
が代表例として挙げられる。これらは、インキに強いシ
ェアが与えられた時にゲル化構造が破壊されやすく、そ
れによりインキ流動性を損なわず、また、弱いシェアが
与えられた時若しくは静置状態ではゲル構造を形成し、
油相を安定化し、温度変化による画像濃度を変化しにく
くする効果がある。
The gelling agent here is Li, Na,
K, Al, Ca, Co, Fe, Mn, Mg, Pb, Z
It is preferable to use an organic acid salt containing a metal such as n or Zr, an organic chelate compound, or a metal soap oligomer, which forms a coordinate bond with the hydroxyl group of the resin. For example, metal actylates such as aluminum octylate, metal naphthenates such as manganese naphthenate, metal stearates such as zinc stearate, organic chelate compounds such as aluminum diisopropoxide monoethylacetoacetate, aluminum oxide octoate. Typical examples are metal soap oligomers such as ates. These are apt to break the gelled structure when a strong share is given to the ink, thereby not impairing the ink fluidity, and when a weak share is given or in a stationary state, a gel structure is formed,
This has the effect of stabilizing the oil phase and making it difficult for the image density to change due to temperature changes.

【0010】さらに、油相はそのゲル化後/ゲル化前の
ずり速度1/secにおける粘度化が1.5〜10であ
ることが望ましい。これは、この粘度比以下では、ゲル
化による保存安定性の効果を得られず、逆に、この粘度
比以上では、逆にゲル構造が十分に破壊できず流動性を
損ねる為である。
Further, the viscosity of the oil phase after gelation / before gelation at a shear rate of 1 / sec is preferably 1.5 to 10. This is because below this viscosity ratio, the effect of storage stability due to gelation cannot be obtained, and conversely, above this viscosity ratio, on the contrary, the gel structure cannot be sufficiently destroyed and fluidity is impaired.

【0011】本発明で用いられる油相中の油成分として
は、従来公知のものが適用でき、例えば、流動パラフィ
ン、スピンドル油、軽油、灯油、マシン油、潤滑油の鉱
物油;オリーブ油、ナタネ油、ヒマシ油、大豆油等の植
物油等が使用される。また、本発明においては合成油も
使用できる。合成油を使用する場合、種々の化合物が利
用できる。代表的な合成ビヒクルは、ポリイソブチレ
ン、ポリイソブテン類、水素化ポリデセン類、トリメチ
ロールプロパンエステル類、ネオペンチルエステル及び
ペンタエリトリトールエステル、ジ(2−エチルヘキシ
ル)セバケート、ジ(2−エチルヘキシル)アジペー
ト、ジブチルフタレート、フルオロカーボン類、珪素エ
ステル類、シラン類、リン含有酸類のエステル類、液体
尿素、フェロセン誘導体類、水素化合成油類、鎖状ポリ
フェニル類、シロキサン類及びシリコーン類(ポリシロ
キサン類)、ブチル置換ビス(p−フェノキシフェニ
ル)エーテル類に代表されるアルキル置換ジフェニルエ
ーテル類、フェノキシフェニルエーテル類などがあげら
れる。
As the oil component in the oil phase used in the present invention, conventionally known ones can be applied, for example, liquid paraffin, spindle oil, light oil, kerosene, machine oil, mineral oil of lubricating oil; olive oil, rapeseed oil. Vegetable oils such as castor oil and soybean oil are used. Also, synthetic oils can be used in the present invention. When using synthetic oils, various compounds are available. Representative synthetic vehicles are polyisobutylene, polyisobutenes, hydrogenated polydecenes, trimethylolpropane esters, neopentyl esters and pentaerythritol esters, di (2-ethylhexyl) sebacate, di (2-ethylhexyl) adipate, dibutyl phthalate. , Fluorocarbons, silicon esters, silanes, esters of phosphorus-containing acids, liquid urea, ferrocene derivatives, hydrogenated synthetic oils, chain polyphenyls, siloxanes and silicones (polysiloxanes), butyl substitution Examples thereof include alkyl-substituted diphenyl ethers represented by bis (p-phenoxyphenyl) ethers and phenoxyphenyl ethers.

【0012】本発明で用いられる乳化剤は、好ましくは
非イオン系界面活性剤であり、例えば、ソルビタン高級
脂肪酸エステル、ポリオキシエチレンソルビタン高級脂
肪酸エステル、脂肪酸モノグリセリド、脂肪酸ジグリセ
リド及び高級アルコール、アルキルフェノール、脂肪酸
等の酸化エチレン付加物等があげられ、単独で或いはこ
れらのHLBの異なるものを2種以上組合せて安定性の
高いエマルジョンを調製する。
The emulsifier used in the present invention is preferably a nonionic surfactant such as sorbitan higher fatty acid ester, polyoxyethylene sorbitan higher fatty acid ester, fatty acid monoglyceride, fatty acid diglyceride and higher alcohol, alkylphenol, fatty acid and the like. Ethylene oxide adduct, etc., and one or a combination of two or more of these having different HLBs is used to prepare a highly stable emulsion.

【0013】本発明で用いられる顔料としては、例え
ば、ファーネスカーボンブラック、ランプブラック、シ
アニンブルー、シアニングリーン、レーキレッド、酸化
チタン、炭酸カルシウム等の有機及び/又は無機の顔料
があげられる。
Examples of the pigment used in the present invention include organic and / or inorganic pigments such as furnace carbon black, lamp black, cyanine blue, cyanine green, lake red, titanium oxide and calcium carbonate.

【0014】また、本発明で用いられる水相中の蒸発防
止剤兼凝結防止剤としては、エチレングリコール、ソル
ビトール、グリセリンなどの多価アルコールや、ポリエ
チレングリコール等が用いられる。防腐・防黴剤として
は、例えば、芳香族ヒドロキシ化合物およびその塩素化
物、サリチル酸、フェノール類、p−オキシ安息香酸メ
チル、p−オキシ安息香酸エチル等、ソルビン酸、デヒ
ドロ酢酸等が用いられる。
As the evaporation inhibitor and anti-caking agent in the aqueous phase used in the present invention, polyhydric alcohols such as ethylene glycol, sorbitol and glycerin, polyethylene glycol and the like are used. Examples of the antiseptic / antifungal agent include aromatic hydroxy compounds and chlorinated products thereof, salicylic acid, phenols, methyl p-oxybenzoate, ethyl p-oxybenzoate, etc., sorbic acid, dehydroacetic acid, etc.

【0015】本発明の孔版印刷用エマルジョンインキ
は、例えば前記の油成分に顔料、樹脂、ゲル化剤、乳化
剤を加えて混合した後、これに水相の溶液を添加して乳
化させることにより製造できる。
The emulsion ink for stencil printing of the present invention is produced, for example, by adding a pigment, a resin, a gelling agent and an emulsifying agent to the above oil component and mixing them, and then adding a solution of an aqueous phase to the mixture to emulsify the mixture. it can.

【0016】以下に、本発明について実施例および比較
例により更に具体的に説明する。なお、ここでの部は重
量基準である。
Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples. The parts here are based on weight.

【0017】実施例1 (着色剤) ファーネスカーボンブラック 5部 (溶剤) 7号ソルペント 7.5部 パラフィン系オイル 5部 (樹脂) ロジン変性フェノール樹脂(平均分子量12000) 8部 (ゲル化剤) オクチル酸アルミ 0.5部 (乳化剤1) ソルビタンセスキオレエート 4部 (乳化剤2) ポリオキシエチレンソルビタンモノオレエート 2部 を3本ロールミルで分散し油相とし、これに (水) イオン交換水 64部 (凝結防止剤)エチレングリコール 4部 の混合溶液(水相)を滴下しながら乳化して、孔版印刷
用エマルジョンインキを得た。
Example 1 (Colorant) Furnace carbon black 5 parts (Solvent) No. 7 Solpent 7.5 parts Paraffinic oil 5 parts (Resin) Rosin-modified phenolic resin (average molecular weight 12000) 8 parts (Gelling agent) Octyl Aluminum acid 0.5 parts (Emulsifier 1) Sorbitan sesquioleate 4 parts (Emulsifier 2) Polyoxyethylene sorbitan monooleate 2 parts Dispersed with a 3-roll mill to form an oil phase, and (water) ion-exchanged water 64 parts (Anti-caking agent) A mixed solution (aqueous phase) of 4 parts of ethylene glycol was added dropwise and emulsified to obtain an emulsion ink for stencil printing.

【0018】実施例2〜5及び比較例1〜7 表1に記載した処方で実施例1と同様な方法で孔版印刷
用エマルジョンインキを得た。
Examples 2-5 and Comparative Examples 1-7 Emulsion inks for stencil printing were obtained in the same manner as in Example 1 with the formulations shown in Table 1.

【0019】[0019]

【表1】 [Table 1]

【0020】これらインキのうち、実施例4、実施例
5、比較例6、比較例7のずり速度1/secにおける
ゲル化後の油相粘度とゲル化前の油相粘度の比を油相度
比として表2に示した。また併せて、実施例1のものも
記載した。
Among these inks, the ratio of the oil phase viscosity after gelling to the oil phase viscosity before gelling at the shear rate 1 / sec of Example 4, Example 5, Comparative Example 6, and Comparative Example 7 was calculated as the oil phase. The ratio is shown in Table 2. In addition, the example 1 is also described.

【表2】 [Table 2]

【0021】更に、これらのインキを用い、市販の感熱
孔版印刷機(リコー社製、プリポートSS955)で充
分印刷を行なってインキを印刷機内にいきわたらせた
後、10℃、20℃、30℃の環境温度で印刷した。こ
の際の印刷物の印刷濃度は反射式光学濃度計(マクベス
社製RD914)によって測定した。更に、濃度測定し
た部分をトンボモノ消しゴムを取り付けたクロックメー
ターで10往復/10秒で消去した後の濃度も測定し
(消去後濃度)/(印刷濃度)からインキの定着率を求
めた。また、インキ約1gを遠心沈降管に入れ60℃、
6300Gの条件で遠心分離した時の油分離率から保存
安定性を評価した。インキ流動性はスプレットメーター
による1分値(23℃)(試験開始1分経過時の直径の
大きさ)で示した。これらの結果を表3にまとめて示し
た。
Further, using these inks, sufficient printing was carried out with a commercially available heat-sensitive stencil printing machine (manufactured by Ricoh Company, Preport SS955) to spread the ink in the printing machine, and then at 10 ° C, 20 ° C, 30 ° C. Printed at ambient temperature. The printing density of the printed matter at this time was measured by a reflection type optical densitometer (RD914 manufactured by Macbeth Co.). Further, the density after erasing the density-measured portion with a clock meter equipped with a register mark eraser at 10 reciprocations / 10 seconds was also measured to obtain the ink fixing ratio from (density after erasing) / (print density). Also, put about 1g of ink in a centrifugal sedimentation tube,
The storage stability was evaluated from the oil separation rate after centrifugation under the condition of 6300G. The ink fluidity was indicated by a 1-minute value (23 ° C.) by a spread meter (size of diameter at 1 minute after the start of the test). The results are summarized in Table 3.

【表3】 定 着 性:○定着率0.7以上 △幸着率0.6〜0.7 ×定着率0.6以上 保存安定性:○油分確率0.5%以下 △油分離率0.5〜1.0% ×油分離率1.0%以上[Table 3] Deposition rate: ○ Fixing rate 0.7 or more △ Adhesion rate 0.6 to 0.7 × Fixing rate 0.6 or more Storage stability: ○ Oil content probability 0.5% or less △ Oil separation rate 0.5 to 1 0.0% x oil separation rate of 1.0% or more

【0022】[0022]

【発明の効果】実施例の記載から明らかなように、本発
明のエマルジョンインキは定着性、保存安定性にすぐ
れ、かつ、インキ流動性、画像品質温度依存性にすぐれ
たものである。
As is apparent from the description of the examples, the emulsion ink of the present invention is excellent in fixability and storage stability, and is excellent in ink fluidity and temperature dependence of image quality.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 新井 文明 東京都大田区中馬込1丁目3番6号 株式 会社リコー内 (72)発明者 小池 正洋 東京都大田区中馬込1丁目3番6号 株式 会社リコー内 (72)発明者 上田 仁士 東京都大田区中馬込1丁目3番6号 株式 会社リコー内 (72)発明者 立石 比呂志 東京都大田区中馬込1丁目3番6号 株式 会社リコー内 (72)発明者 浅田 啓介 宮城県柴田郡柴田町大字中名生字神明堂3 −1 東北リコー株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumiaki Arai, Inc. 1-3-6 Nakamagome, Ota-ku, Tokyo Stock company, Ricoh Co., Ltd. (72) Masahiro Koike, 1-3-6 Nakamagome, Ota-ku, Tokyo Shares In Ricoh Company (72) Inventor Hitoshi Ueda 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh (72) Inventor Hiroshi Tateishi 1-3-3 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh ( 72) Inventor Keisuke Asada 3-1, Shinmei-do, Nakameisei, Shibata-cho, Shibata-gun, Miyagi Prefecture Tohoku Ricoh Co., Ltd.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 油相約10〜50重量%と水相約90〜
50重量%とからなる油中水型エマルジョンからなり、
かつ、該油相中に樹脂及びその樹脂のゲル化剤を含有し
てなることを特徴とする孔版印刷用エマルジョンイン
キ。
1. An oil phase of about 10-50% by weight and an aqueous phase of about 90-.
It consists of a water-in-oil emulsion consisting of 50% by weight,
An emulsion ink for stencil printing, characterized in that a resin and a gelling agent for the resin are contained in the oil phase.
【請求項2】 前記樹脂はフェノール系あるいはアルコ
ール系水酸基のうち少なくとも一方を持つものである請
求項1記載の孔版印刷用エマルジョンインキ。
2. The emulsion ink for stencil printing according to claim 1, wherein the resin has at least one of phenolic and alcoholic hydroxyl groups.
【請求項3】 前記樹脂はその平均分子量が3000〜
150000である請求項1記載の孔版印刷用エマルジ
ョンインキ。
3. The resin has an average molecular weight of 3,000 to 3,000.
The emulsion ink for stencil printing according to claim 1, which is 150,000.
【請求項4】 前記樹脂はそのゲル化が配位結合により
なされている請求項1記載の孔版印刷用エマルジョンイ
ンキ。
4. The emulsion ink for stencil printing according to claim 1, wherein the resin is gelled by coordination bonds.
【請求項5】 前記油相はそのゲル化後/ゲル化前のず
り速度1/secにおける粘度比が1.5〜10である請求
項1記載の孔版印刷用エマルジョンインキ。
5. The emulsion ink for stencil printing according to claim 1, wherein the oil phase has a viscosity ratio of 1.5 to 10 at a shear rate of 1 / sec after gelation / before gelation.
JP31199891A 1991-10-29 1991-10-29 Emulsion ink for stencil printing Expired - Fee Related JP3073818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31199891A JP3073818B2 (en) 1991-10-29 1991-10-29 Emulsion ink for stencil printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31199891A JP3073818B2 (en) 1991-10-29 1991-10-29 Emulsion ink for stencil printing

Publications (2)

Publication Number Publication Date
JPH05117564A true JPH05117564A (en) 1993-05-14
JP3073818B2 JP3073818B2 (en) 2000-08-07

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ID=18023981

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06128518A (en) * 1992-10-16 1994-05-10 Tohoku Ricoh Co Ltd W/o emulsion ink
US5622548A (en) * 1995-05-19 1997-04-22 Micap Technology Corp. Duplicating inks for digital duplicators
JP2000017215A (en) * 1998-04-27 2000-01-18 Tohoku Ricoh Co Ltd Water-in-oil emulsion ink for stencil printing
JP2000017214A (en) * 1998-04-27 2000-01-18 Tohoku Ricoh Co Ltd Water-in-oil emulsion ink for stencil printing
US6117221A (en) * 1998-06-23 2000-09-12 Riso Kagaku Corporation Emulsion ink for stencil printing
US6663701B2 (en) * 2001-01-26 2003-12-16 Riso Kagaku Corporation Emulsion ink for stencil printing and its use
JP2011256322A (en) * 2010-06-11 2011-12-22 Riso Kagaku Corp Emulsion ink for stencil printing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06128518A (en) * 1992-10-16 1994-05-10 Tohoku Ricoh Co Ltd W/o emulsion ink
US5622548A (en) * 1995-05-19 1997-04-22 Micap Technology Corp. Duplicating inks for digital duplicators
JP2000017215A (en) * 1998-04-27 2000-01-18 Tohoku Ricoh Co Ltd Water-in-oil emulsion ink for stencil printing
JP2000017214A (en) * 1998-04-27 2000-01-18 Tohoku Ricoh Co Ltd Water-in-oil emulsion ink for stencil printing
US6117221A (en) * 1998-06-23 2000-09-12 Riso Kagaku Corporation Emulsion ink for stencil printing
US6663701B2 (en) * 2001-01-26 2003-12-16 Riso Kagaku Corporation Emulsion ink for stencil printing and its use
JP2011256322A (en) * 2010-06-11 2011-12-22 Riso Kagaku Corp Emulsion ink for stencil printing

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