JP2640235B2 - Desensitizing ink for pressure-sensitive recording paper - Google Patents
Desensitizing ink for pressure-sensitive recording paperInfo
- Publication number
- JP2640235B2 JP2640235B2 JP62264343A JP26434387A JP2640235B2 JP 2640235 B2 JP2640235 B2 JP 2640235B2 JP 62264343 A JP62264343 A JP 62264343A JP 26434387 A JP26434387 A JP 26434387A JP 2640235 B2 JP2640235 B2 JP 2640235B2
- Authority
- JP
- Japan
- Prior art keywords
- sensitive recording
- ink
- pressure
- recording paper
- desensitizing
- 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.)
- Expired - Fee Related
Links
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- Color Printing (AREA)
Description
【発明の詳細な説明】 （発明の分野） 本発明は感圧記録紙用減感インキに関し、更に詳しく
は、ガイドロール汚れ及びセツトオフ性に優れ、オフセ
ツト適性を著しく改良した感圧記録紙用減感インキに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a desensitizing ink for pressure-sensitive recording paper, and more particularly, to a pressure-sensitive recording paper excellent in guide roll stains and set-off properties and markedly improved in offset setting. Related to ink-sensitive ink.
（従来技術） 電子供与性のまたはプロトン受容性の無色の有機化合
物（以下発色剤と称する）と電子受容性のまたはプロト
ン放出性の化合物（以下顕色剤と称する）との反応にて
発色像を得ることは古くから知られている。この現像を
具体的に利用したものとして、感圧記録紙（例えば米国
特許2505470号、同2505489号、同2550471号、同2548366
号、同2712507号、同2730456号、同2730457号、同34182
50号、同3672935号）、感熱記録紙（例えば特公昭43-41
60号、同43-7600号、同45-14039号、米国特許2939009
号）等が挙げられる。更に顕色剤を塗布したシートに発
色剤を含むインキを供給して発色像を得る印刷方法も知
られている（ドイツ特許出願（OLS）1939962号）。顕色
剤とは前に定義した性質を有するもので、クレー類、フ
エノール樹脂類、芳香族カルボン酸の金属塩等が挙げら
れる。(Prior Art) A color image formed by a reaction between an electron-donating or proton-accepting colorless organic compound (hereinafter referred to as a color former) and an electron-accepting or proton-emitting compound (hereinafter referred to as a developer). Obtaining has been known for a long time. Specific examples of the use of this development include pressure-sensitive recording paper (for example, US Pat. Nos. 2,505,470, 2,505,489, 2,550,471, and 2,548,366).
Nos. 2712507, 2730456, 2730457, 34182
No. 50, No. 3672935), Thermal recording paper (for example, JP-B-43-41)
No. 60, No. 43-7600, No. 45-14039, U.S. Pat.
No.) and the like. Further, a printing method is also known in which an ink containing a color former is supplied to a sheet coated with a color developer to obtain a color image (German Patent Application (OLS) 1939962). The color developer has properties as defined above, and examples thereof include clays, phenol resins, and metal salts of aromatic carboxylic acids.
一般に感圧記録紙においては、発色像を得るのに前記
の発色剤を含んだマイクロカプセルを破壊させ、発色剤
と顕色剤を接触させることによつて行なわれる。一般に
これらの顕色剤は支持体の全面に均一に塗布され顕色剤
シートとして用いられるか、あるいはマイクロカプセル
含有層と接触させて支持体の同一面に塗布され、１枚で
感圧記録可能なシートとして用いられるが、感圧記録紙
の使用目的によつては、記録不要部分を有することがあ
り、このような場合には減感剤を含む減感インキを印刷
機等によつて顕色剤を含むシートの記録不要部分に塗布
して減感する方法がとられている。Generally, in a pressure-sensitive recording paper, a color image is obtained by destroying the microcapsules containing the color former and bringing the color former into contact with a color developer. In general, these developers are applied uniformly over the entire surface of the support and used as a developer sheet, or they are applied to the same surface of the support by contacting with a microcapsule-containing layer, and pressure-sensitive recording is possible with one sheet Although it may be used as a simple sheet, it may have a recording-unnecessary part depending on the purpose of the pressure-sensitive recording paper. In such a case, the desensitizing ink containing the desensitizing agent is exposed by a printing machine or the like. A method has been adopted in which desensitization is performed by applying the colorant-containing sheet to a recording unnecessary portion of the sheet.
このような目的に用いられる減感インキについては、
例えば米国特許27777805号、特公昭44-27255号、同45-2
1448号、同46-22651号、同46-29546号、特開昭47-32915
号、特公昭47-38201号、同48-4050号、特開昭48-6805
号、特公昭49-4484号、同49-19647号、同49-2300号、同
49-13850号、特開昭49-43708号、同49-72009号、同49-7
7709号、同49-77710号、同49-15513号、同49-8350号９
号、ドイツ特許出願（OLS）2343800号、同23590759号、
同2361856号、特公昭58-38119号、同61-2515号等に記載
されている。For desensitizing inks used for such purposes,
For example, U.S. Patent No. 27777805, JP-B-44-27255, and JP-B-45-2
No. 1448, No. 46-22651, No. 46-29546, JP 47-32915
No., JP-B-47-38201, JP-B-48-4050, JP-A-48-6805
No., Japanese Patent Publication No. 49-4484, No. 49-19647, No. 49-2300, No.
No. 49-13850, JP-A-49-43708, No. 49-72009, No. 49-7
7709, 49-77710, 49-15513, 49-8350 9
No., German Patent Application (OLS) No. 2343800, No. 2357959,
No. 2361856, JP-B-58-38119, and JP-A-61-2515.
ところが上記の減感インキは浸透乾燥型であるのでイ
ンキ乾燥型であるのでインキ乾燥性が遅く、印刷スピー
ドが上げ難いという欠点を有している。このような背景
から光硬化乾燥システムを減感印刷の技術分野へ応用す
ることが考えられ、減感インキ中に含まれるバインダー
に光硬化型のバインダーを用いることにより乾燥性を上
げようとした光硬化型減感インキが提案されているが
（特公昭61-54064号）、これはセツトオフ性及びガイド
ロール汚れが改良不充分であり、またオフセツト印刷適
性にも不充分な点が多く、改良が必要とされていた。However, the above-mentioned desensitizing ink is a penetrating drying type and therefore has a drawback that since it is an ink drying type, the ink drying property is slow and it is difficult to increase the printing speed. From such a background, it is conceivable to apply the photo-curing drying system to the technical field of desensitized printing, and to improve the drying property by using a photo-curable binder as a binder contained in the desensitized ink. Curable desensitizing inks have been proposed (Japanese Patent Publication No. 61-54064). However, these inks have insufficient set-off properties and dirt on guide rolls, and are also insufficient in suitability for offset printing. Was needed.
（発明の目的） 本発明の目的はガイドロール汚れ及びセツトオフ性に
優れ、かつオフセツト印刷適性を改良した光硬化性感圧
記録紙用減感インキを提供することにある。(Object of the Invention) An object of the present invention is to provide a photocurable desensitizing ink for pressure-sensitive recording paper which is excellent in guide roll contamination and set-off property and has improved suitability for offset printing.
（発明の構成） 上記目的は エチレン性不飽和二重結合を有する化合物バインダー
として用いた感圧記録用減感インキにおいて、一般式
〔Ｉ〕で示されるアミン１モルに対し、少なくともブチ
レンオキサイド５〜50モルを付加した付加体を減感剤と
して用い、エチレン性不飽和二重結合を有する化合物と
してポリエステルアクリレートとエポキシアクリレート
とを併用したたことを特徴とする記載の光硬化性感圧記
録紙用減感インキ。(Constitution of the Invention) The object of the present invention is to provide a pressure-sensitive recording desensitizing ink used as a compound binder having an ethylenically unsaturated double bond, wherein at least butylene oxide 5 to 5 moles per mole of the amine represented by the general formula [I]. The photocurable pressure-sensitive recording paper according to claim 1, wherein an adduct to which 50 mol is added is used as a desensitizer, and a polyester acrylate and an epoxy acrylate are used in combination as a compound having an ethylenically unsaturated double bond. Sensitive ink.
Ｒ−〔NH−（CH2）ｎ−〕ｍ‐NH2 〔Ｉ〕 （式中ＲはＨまたはアルキル基、ｍは１〜５の整数、
ｎは１〜17の整数） によつて達成された。R- [NH- (CH 2) n -] m -NH 2 (I) (wherein R is H or an alkyl group, m is an integer of 1 to 5,
n is an integer from 1 to 17).
以下本発明を詳しく説明する。 Hereinafter, the present invention will be described in detail.
本発明で用いられるエチレン性不飽和二重結合を有す
る化合物としては、アジピン酸・1,6−ヘキサンジオー
ル・アクリル酸、無水フタル酸・プロピレンオキシド・
アクリル酸、トリメツト酸・ジエチレングリコール・ア
クリル酸、トリメチロールプロパン・アジピン酸・水素
添加キヤスターオイル脂肪酸、のように多価アルコール
と多塩基酸から得られるポリエステルに（メタ）アク形
ロイル基を導入したポリエステルアクリレート及びビス
フエノールＡ・エピクロルヒドリン・アクリル酸、メタ
クリル酸変性エポキシ樹脂、フエノールノボラツク・エ
ピクロルヒドリン・アクリル酸のごときエポキシアクリ
レートである。Examples of the compound having an ethylenically unsaturated double bond used in the present invention include adipic acid, 1,6-hexanediol and acrylic acid, phthalic anhydride and propylene oxide.
Poly (meth) acroyl groups are introduced into polyesters obtained from polyhydric alcohols and polybasic acids, such as acrylic acid, trimetic acid / diethylene glycol / acrylic acid, trimethylolpropane / adipic acid / hydrogenated castor oil fatty acids. Epoxy acrylates such as polyester acrylate and bisphenol A / epichlorohydrin / acrylic acid, methacrylic acid-modified epoxy resin, and phenol novolak / epichlorohydrin / acrylic acid.
ポリエステル単独では光硬化性が不充分であり、ガイ
ドロール汚れ及びセツトオフ性が一般の浸透乾燥型の減
感インキと比べて充分な良化が見られない。またエポキ
シアクリレート単独ではオフセツト印刷適性、特に版の
非画像部の汚れ（以下地汚れと称する）に問題が生じ
る。ポリエステルアクリレートとエポキシアクリレート
の併用比率はインキ中の他の組成にも影響を受けるが、
好ましくは重量比で1:10〜2:1であり、更に好ましくは
1:5〜1:1である。Polyester alone is insufficient in photocurability, and the guide roll stain and set-off property are not sufficiently improved as compared with general permeation-drying type desensitizing inks. In addition, epoxy acrylate alone causes a problem in suitability for offset printing, particularly in stains on non-image portions of the plate (hereinafter referred to as background stains). The combination ratio of polyester acrylate and epoxy acrylate is also affected by other components in the ink,
It is preferably 1:10 to 2: 1 by weight ratio, more preferably
1: 5 to 1: 1.
本発明において調製される減感インキの物性として
は、30℃におけるタツクが4.5〜8.5、更に好ましくは5.
5〜7.0であり、25℃におけるフローが30〜42、更に好ま
しくは33〜38である。該範囲内に物性を調節することに
よつてオフセツト印刷適性改良の効果は著しく向上す
る。タツク値が適正範囲より小さく、またフロー値が適
正範囲より大きいと地汚れの改良効果は小さくなり、ま
たタツク値が適正範囲より大きく、フロー値が適正範囲
より小さいと地汚れは良化するが、逆に画像部への版残
りが発生する。As physical properties of the desensitizing ink prepared in the present invention, the tack at 30 ° C. is 4.5 to 8.5, more preferably 5.
The flow at 25 ° C. is 30 to 42, more preferably 33 to 38. By adjusting the physical properties within this range, the effect of improving the suitability for offset printing is significantly improved. If the tack value is smaller than the proper range and the flow value is larger than the proper range, the effect of improving background dirt will be reduced.If the tack value is larger than the proper range and the flow value is smaller than the proper range, the background dirt will be improved. On the contrary, a plate remains on the image portion.
これらの物性を調節する具体的な方法は特に限定され
るものではないが、２−エチルヘキシルアクリレート、
テトラヒドロフルフリルアクリレート、フエノキシエチ
ルアクリレート、1,3−ジオキソランアクリレートのご
とき単官能アクリレートモノマー及び／またはヘキサン
ジオールアクリレート、ネオペンチルグリコールジアク
リレート、ヒドリキシビバリン酸ネオペンケルグリコー
ルのごとき２官能アクリレートモノマーなどのてい粘度
モノマーを反応性希釈剤として用いたり、ワツクスある
いは有機粘土のようなインキ業界において通常用いられ
ているような物性調節剤を用いて行なえばよい。Specific methods for adjusting these physical properties are not particularly limited, but include 2-ethylhexyl acrylate,
Monofunctional acrylate monomers such as tetrahydrofurfuryl acrylate, phenoxyethyl acrylate, 1,3-dioxolane acrylate and / or bifunctional acrylates such as hexanediol acrylate, neopentyl glycol diacrylate, neopentyl glycol hydroxybivalate It may be carried out using a monomer having a high viscosity such as a monomer as a reactive diluent, or using a physical property modifier such as wax or organic clay which is generally used in the ink industry.
また本発明において減感剤として、一般式〔Ｉ〕に示
されるアミン１モルに少なくとも５〜50モルのブチレン
オキサイドを付加した付加体を用いることにより、更に
オフセツト適性は向上し、また減感効果、セツトオフ性
などの減感インキとしての一般的性能も向上する。Further, in the present invention, by using an adduct obtained by adding at least 5 to 50 mol of butylene oxide to 1 mol of the amine represented by the general formula [I], the suitability for offset is further improved, and the desensitizing effect is also improved. Also, general performance as a desensitizing ink such as set-off property is improved.
Ｒ−〔NH−（CH2）ｎ−〕ｍ−NH2 〔Ｉ〕 （式中ＲはＨ又はアルキル基、ｍは１〜５の整数、ｎは
１〜17の整数） Ｒは具体的にはＨ又は炭素数20以下のアルキル基であ
るが、好ましくは炭素数10以下のアルキル基又はＨ、更
に好ましくは炭素数４以下のアルキル基又はＨである。R- [NH- (CH 2) n -] m -NH 2 (I) (wherein R is H or an alkyl group, m is an integer of from 1 to 5, n represents an integer of 1 to 17) R is specifically Is H or an alkyl group having 20 or less carbon atoms, preferably an alkyl group or H having 10 or less carbon atoms, and more preferably an alkyl group or H having 4 or less carbon atoms.
又、ｍは１〜５の整数であるが、好ましくは１〜３、
更に好ましくはｍ＝２である。M is an integer of 1 to 5, preferably 1 to 3,
More preferably, m = 2.
又ｎは１〜17の整数であるが、好ましくは１〜10、更
に好ましくは１〜４である。N is an integer of 1 to 17, preferably 1 to 10, and more preferably 1 to 4.
以下その具体例をいくつか示す。 Some specific examples are shown below.
H2N(CH2)2NH2、H2N(CH2)2NH(CH2)2NH2、H2N(CH2)2NH
(CH2)2NH2、H3CNH(CH2)2NH2、H2N(CH2)3NH2、C17H35NH
(CH2)2NH(CH2)2NH2、C2H5NH−（CH２ ２ ２NH2等で
ある。H 2 N (CH 2 ) 2 NH 2 , H 2 N (CH 2 ) 2 NH (CH 2 ) 2 NH 2 , H 2 N (CH 2 ) 2 NH
(CH 2 ) 2 NH 2 , H 3 CNH (CH 2 ) 2 NH 2 , H 2 N (CH 2 ) 3 NH 2 , C 17 H 35 NH
(CH 2) 2 NH (CH 2) a 2 NH 2, C 2 H 5 NH- (CH 2 2 2 NH 2 and the like.
本発明の感圧記録紙用減感インキは前述の減感剤及び
バインダーに光重合開始剤及び顔料を添加するが、必要
に応じて熱重合禁止剤を添加してもよい。In the desensitizing ink for pressure-sensitive recording paper of the present invention, a photopolymerization initiator and a pigment are added to the above-described desensitizer and binder, and a thermal polymerization inhibitor may be added as necessary.
光重合開始剤としては、ベンゾフエノン、４−クロル
ベンゾフエノン、4,4′ビス（ジエチルアミノ）ベンゾ
フエノン、２−メチルベンゾフエノン、４−メチルベン
ゾフエノン、β−ナフチルフエニルケトン、２−ベンゾ
イルチオフエン、メチルオルソベンゾイル安息香酸メチ
ル、２−ベンゾイルピリジン、４−メチルベンジル等の
ベンジル系の光重合開始剤、キサントン、２−クロルキ
サントン、２−メチルキサントン、２−イソプロピルキ
サントン等のキサントン系の光重合開始剤、チオキサン
トン、２−クロルチオキサントン、２−メチルチオキサ
ントン、２−プロピルチオキサントンとうのチオキサン
トン系の光重合開始剤、アントラキノン、２−メチルア
ントラキノン、２−エチルアントラキノン、１−クロル
アントラキノン、９−フルオレン等のアントラキノン系
の光重合開始剤、アセトフエノン、４−メチルアセトフ
エノン、４−ジエチルアミノアセトフエノン、４−クロ
ルアセトフエノン、2,2−ジメトキシ−２−フエニルア
セトフエノン、2,2−ジメトキシアセトフエノン、2,2,2
−トリクロル−４′−ｔ−ブチルアセトフエノン、2,2
−ジクロル−４′−フエニルオキシアセトフエノン等の
アセトフエノン系の光重合開始剤、１−フエニル−1,2
プロパンジオン−２−（ｏ−ベンゾイル）オキシム等の
オキシム系の光重合開始剤、ベンゾインメチルエーテ
ル、ベンゾインエチルエーテル、ベンゾインイソプロピ
ルエーテル、ベンゾインブチルエーテルとうのベンゾイ
ン系の光重合開始剤が挙げられる。Examples of the photopolymerization initiator include benzophenone, 4-chlorobenzophenone, 4,4'bis (diethylamino) benzophenone, 2-methylbenzophenone, 4-methylbenzophenone, β-naphthylphenylketone, and 2-benzoyl. Benzyl-based photopolymerization initiators such as thiophene, methyl methylorthobenzoylbenzoate, 2-benzoylpyridine and 4-methylbenzyl; and xanthone-based initiators such as xanthone, 2-chloroxanthone, 2-methylxanthone and 2-isopropylxanthone. Photopolymerization initiator, thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, thioxanthone-based photopolymerization initiator such as 2-propylthioxanthone, anthraquinone, 2-methylanthraquinone, 2-ethylanthraquinone, 1-chloroanthraquinone, 9- Anthraquinone-based photopolymerization initiators such as fluorene, acetophenone, 4-methylacetophenone, 4-diethylaminoacetophenone, 4-chloroacetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2, 2-dimethoxyacetophenone, 2,2,2
-Trichloro-4'-t-butylacetophenone, 2,2
Acetophenone-based photopolymerization initiators such as -dichloro-4'-phenyloxyacetophenone, 1-phenyl-1,2
Oxime-based photopolymerization initiators such as propanedione-2- (o-benzoyl) oxime, and benzoin-based photopolymerization initiators such as benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin butyl ether are exemplified.
顔料としては、酸化チタン、酸化亜鉛、硫酸バリウ
ム、炭酸マグネシウム、炭酸カルシウム、炭酸バリウ
ム、水酸化マグネシウム、タルク、カオリン、ベントナ
イト、有機ベントナイト等従来公知のものが用いられ
る。As the pigment, conventionally known pigments such as titanium oxide, zinc oxide, barium sulfate, magnesium carbonate, calcium carbonate, barium carbonate, magnesium hydroxide, talc, kaolin, bentonite, and organic bentonite are used.
本発明の減感インキは顕色剤面に印刷され、直ちに光
照射されて始めて効果を発揮するものである。印刷方式
としてはオフセツト印刷、凸版印刷が適用されるが、特
にオフセツト印刷にとつて本発明は有効である。The desensitizing ink of the present invention is effective only when it is printed on the developer surface and immediately irradiated with light. Offset printing and letterpress printing are applied as printing methods, and the present invention is particularly effective for offset printing.
以下実施例において本発明を具体的に説明するが、本
発明は以下実施例のみに限定されるものではない。Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to the following Examples.
実施例 実施例中、部とは重量部を示す。Examples In Examples, "parts" means "parts by weight".
実施例−１ チタンホワイト 18部 有機ベントナイト ８部 イルガキユア−651（チバガイギー社製光重合開始剤） ５部 エベクリル440（UCB社製ポリエステルアクリレート） 15部 リポキシSP1519X-2 （昭和高分子（株）製エポキシアクリレート） 20部 減感剤（１） 30部 KAYARAD R604（日本化薬（株）製アクリレートモノマー） ４部 計 100部 上記処方により、タツク5.8、フロー35.0の減感イン
キＡを作成した。Example-1 18 parts of titanium white 8 parts of organic bentonite 8 parts Irgaki Yua-651 (photopolymerization initiator manufactured by Ciba Geigy) 5 parts Evecryl 440 (polyester acrylate manufactured by UCB) 15 parts Lipoxy SP1519X-2 (epoxy manufactured by Showa Polymer Co., Ltd.) Acrylate) 20 parts Desensitizer (1) 30 parts KAYARAD R604 ( Acrylic monomer manufactured by Nippon Kayaku Co., Ltd.) 4 parts 100 parts in total A desensitizing ink A having a tack of 5.8 and a flow of 35.0 was prepared according to the above formulation.
実施例−２ 実施例−１の減感インキＡの処方中、エベクリル440
をアロニツクスM8030（２）に変更（等量置換）し、タ
ツク6.0、フロー35.0の減感インキＢを作成した。Example-2 In the formulation of desensitizing ink A of Example-1, Ebecryl 440 was used.
Was changed to Aronix M8030 (2) (equivalent replacement) to prepare desensitizing ink B having a tack of 6.0 and a flow of 35.0.
（２）東亜合成化学工業（株）製ポリエステルアクリレ
ート 実施例−３〜７ 実施例−１と同一の素材にて配合比を変え、下記タツ
ク、フローの減感インキＣ、Ｄ、Ｅ、Ｆ、Ｇを作成し
た。 (2) Polyester acrylate manufactured by Toa Gosei Chemical Co., Ltd. Examples -3 to 7 The same materials as in Example 1 were used, but the mixing ratio was changed, and the following tack and flow desensitizing inks C, D, E, F, G was created.
比較例−１ 実施例−１の減感剤を に変えた以外は実施例−１と同様に減感インキを調製し
た。 Comparative Example-1 The desensitizer of Example-1 was used. A desensitizing ink was prepared in the same manner as in Example 1 except that the ink was changed to.
タツク 7.0、フロー40.0 各実施例、比較例による減感インキの性能について、
宮越機械製フオームオフ輪機により比較試験をした結果
を第１表に示す。Tack 7.0, Flow 40.0 Regarding the performance of the desensitizing ink according to each Example and Comparative Example,
Table 1 shows the results of a comparative test using a form-off wheel made by Miyakoshi Machinery.
Claims (1)
をバインダーとして用いた感圧記録紙用減感インキにお
いて、一般式〔Ｉ〕で示されるアミン１モルに対し、少
なくともブチレンオキサイド５〜50モルを付加した付加
体を減感剤として用い、エチレン性不飽和二重結合を有
する化合物としてポリエステルアクリレートとエポキシ
アクリレートとを併用したことを特徴とする光硬化性感
圧記録用減感インキ。 Ｒ−〔NH−（CH2）ｎ−〕ｍ−NH2 〔Ｉ〕 （式中ＲはＨまたはアルキル基、ｍは１〜５の整数、ｎ
は１〜17の整数）In a desensitizing ink for pressure-sensitive recording paper using a compound having an ethylenically unsaturated double bond as a binder, at least 5 to 50 butylene oxide is used per mole of the amine represented by the general formula [I]. A photocurable pressure-sensitive recording desensitizing ink, characterized in that a mole-added adduct is used as a desensitizer, and a polyester acrylate and an epoxy acrylate are used in combination as a compound having an ethylenically unsaturated double bond. R- [NH- (CH 2) n -] m -NH 2 (I) (wherein R is H or an alkyl group, m is an integer of from 1 to 5, n
Is an integer from 1 to 17)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62264343A JP2640235B2 (en) | 1987-10-20 | 1987-10-20 | Desensitizing ink for pressure-sensitive recording paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62264343A JP2640235B2 (en) | 1987-10-20 | 1987-10-20 | Desensitizing ink for pressure-sensitive recording paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01105776A JPH01105776A (en) | 1989-04-24 |
| JP2640235B2 true JP2640235B2 (en) | 1997-08-13 |
Family
ID=17401844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62264343A Expired - Fee Related JP2640235B2 (en) | 1987-10-20 | 1987-10-20 | Desensitizing ink for pressure-sensitive recording paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2640235B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52509A (en) * | 1975-06-20 | 1977-01-05 | Toyo Ink Mfg Co | Composition of desensitized ink |
| JPS59209191A (en) * | 1983-05-12 | 1984-11-27 | Mitsubishi Paper Mills Ltd | Desensitized ink for recording material |
-
1987
- 1987-10-20 JP JP62264343A patent/JP2640235B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01105776A (en) | 1989-04-24 |
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