JP3027216B2 - Color former sheet for carbonless pressure-sensitive copying paper - Google Patents

Color former sheet for carbonless pressure-sensitive copying paper

Info

Publication number
JP3027216B2
JP3027216B2 JP3081393A JP8139391A JP3027216B2 JP 3027216 B2 JP3027216 B2 JP 3027216B2 JP 3081393 A JP3081393 A JP 3081393A JP 8139391 A JP8139391 A JP 8139391A JP 3027216 B2 JP3027216 B2 JP 3027216B2
Authority
JP
Japan
Prior art keywords
color
paper
color former
parts
sensitive copying
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 - Lifetime
Application number
JP3081393A
Other languages
Japanese (ja)
Other versions
JPH04290785A (en
Inventor
宜弘 鳥居
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.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills 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 Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP3081393A priority Critical patent/JP3027216B2/en
Publication of JPH04290785A publication Critical patent/JPH04290785A/en
Application granted granted Critical
Publication of JP3027216B2 publication Critical patent/JP3027216B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明はノーカーボン感圧複写紙
に関し、更に詳細にはノーカーボン感圧複写紙用発色剤
シートの印刷適性とのりづけ適性向上に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbonless pressure-sensitive copying paper, and more particularly to an improvement in printing and gluing properties of a color former sheet for carbonless pressure-sensitive copying paper.

【0002】[0002]

【従来の技術】電子供与性染料と電子受容性酸性物質を
使用したノーカーボン感圧複写紙は、例えば米国特許第
2505489号、同4480052号明細書に詳細に
記載されているように、基本的には電子供与性染料(以
下、発色剤と称す)を高沸点溶媒に溶解しマイクロカプ
セルに内蔵して紙の如き支持体の裏面に塗布した発色剤
シート(以下、上用紙と称する場合がある)と好適粒径
に粉砕した電子受容性酸性物質(以下、顕色剤と称す)
を紙の如き支持体の表面に塗布した顕色剤シート(以
下、下用紙と称する場合がある)から成り、上用紙−下
用紙の塗布面を対向させ筆記或はタイプライター等で加
圧印字すると加圧部のマイクロカプセルが破壊されて流
出した発色剤と顕色剤が接触して発色反応を起こし発色
画像が得られる。更に、ノーカーボン感圧複写紙は多数
枚複写が必要であり又要求されるので、紙の如き支持体
の表面に顕色剤、裏面にマイクロカプセルを塗布し、顕
色剤と発色剤を1枚で兼ね備えたシートを中用紙とし
て、上用紙−中用紙−中用紙・・・下用紙と中用紙を多
数枚組み合わせることにより、多くの複写記録が可能で
ある。
2. Description of the Related Art Carbon-free pressure-sensitive copying papers using an electron-donating dye and an electron-accepting acidic substance are described in US Pat. No. 2,505,489 and US Pat. A color former sheet (hereinafter sometimes referred to as upper paper) in which an electron-donating dye (hereinafter, referred to as a color former) is dissolved in a high-boiling-point solvent, embedded in microcapsules, and applied to the back surface of a support such as paper. ) And an electron-accepting acidic substance pulverized to a suitable particle size (hereinafter referred to as a color developer)
Is applied on the surface of a support such as paper (hereinafter sometimes referred to as lower paper), and the upper and lower papers are coated with pressure and printed by writing or using a typewriter or the like. Then, the microcapsules in the pressurizing section are broken, and the color developing agent and the color developing agent that have flowed out come into contact with each other to cause a color forming reaction, thereby obtaining a color formed image. Further, since the carbonless pressure-sensitive copying paper requires or requires a large number of copies, a developer is applied to the surface of a support such as paper and a microcapsule is applied to the back surface, and the developer and the color former are combined. A large number of copies and recordings are possible by combining a large number of lower sheets and middle sheets with upper sheets-medium sheets-medium sheets...

【0003】[0003]

【発明が解決しようとする課題】このようなノーカーボ
ン感圧複写紙は、通常、各種の伝票類、ワードプロセッ
サー用紙等の広範囲に使用されており、中でもクレジッ
ト業界、保険業界のおける申込書、契約書等の需要が急
増している。最近、これらの申込書、契約書等は上用紙
の表面に色インキを1色のみならず2〜3色と多色印刷
を施し、色彩性豊かな商品として使用するが、一般の上
用紙の表面は表面強度を維持するために澱粉等の水溶性
高分子を少量サイズプレス塗布しているが、その殆どは
紙支持体のパルプ繊維が露出しており、色インキ着肉性
・鮮明性等の印刷適性が劣り、又色インキの裏抜けがあ
る。
Such carbonless pressure-sensitive copy paper is generally used in a wide variety of forms such as various slips, word processor paper, etc., and, in particular, applications and contracts in the credit and insurance industries. The demand for papers etc. is increasing rapidly. Recently, these applications and contracts have been used as multi-color printing not only one color but also two or three colors on the surface of the upper paper, and used as a product with rich colors. On the surface, a small amount of water-soluble polymer such as starch is applied by size press to maintain the surface strength, but most of the surface has pulp fibers of the paper support exposed, and the color ink deposition property and sharpness etc. Has poor printability and strike-through of color ink.

【0004】そこで、従来より色インキの着肉性向上及
び裏抜け防止を図るために紙支持体の叩解度を上げパル
プ繊維を短くし、平滑度を高くするとか、坪量を増やす
とか或は紙支持体中にタルク等の顔料を抄き込んで対策
としている。しかしながら、これらの対策では実用的に
問題があった。即ち、パルプ繊維を短く或は紙支持体中
にタルク等の顔料を抄き込むと紙支持体は破れやすく強
度は弱くなり、更に剛直度が低下し、カプセル塗布時の
製造工程、印刷加工時の紙切れ、スプロケット・ミシン
目刃の摩耗が大きくなり、トラブルが発生する。又、坪
量を増やすと、紙支持体の厚さが増え印字発色能力の低
下につながる。
[0004] Therefore, in order to improve the inking property of color inks and prevent strike-through, conventionally, the degree of beating of the paper support is increased to shorten the pulp fiber and increase the smoothness, increase the basis weight, or increase the basis weight. Pigments such as talc are incorporated into the paper support to take measures. However, these measures have practical problems. That is, if the pulp fiber is shortened or a pigment such as talc is incorporated into the paper support, the paper support is easily broken, the strength is weakened, the rigidity is further reduced, and the manufacturing process during capsule coating and the printing process Of paper, wear of sprockets and perforation blades increases, causing trouble. On the other hand, when the basis weight is increased, the thickness of the paper support increases, which leads to a decrease in the printing color developing ability.

【0005】依って実用的に効果がある対策としては紙
支持体の表面に白色顔料を塗布し、平滑性、不透明向上
により、色インキの着肉性・鮮明性を維持し、更に裏抜
け防止を図る方法がある。処がこの方法は上記問題は解
決できるが、それ以外のノーカーボン感圧複写紙として
重要な特性であるのりづけ適性がなくなってしまう。そ
れは通常のノーカーボン感圧複写紙を申込書、契約書等
に使用する場合、上用紙−中用紙・・・下用紙を1セッ
トとして重ね合わせて側面にセット用のりでのりづけす
ると、各セット毎の接着、剥離はスムーズであるが、上
用紙表面に顔料層を設けると剥離適性がなくなってしま
う。この原因は紙支持体自体は適切な撥のり・撥水性が
あるように設計されているが、ただ単に顔料層を設けた
だけでは撥のり・撥水性が低下し、セット用のりが側面
より多く浸み込むために起こる。
Therefore, as a practically effective countermeasure, a white pigment is applied to the surface of a paper support to improve the smoothness and opacity, thereby maintaining the inking property and sharpness of the color ink, and further preventing strike-through. There is a way to plan. Although this method can solve the above problem, it loses the gluing suitability, which is another important characteristic of carbonless pressure-sensitive copying paper. When using normal carbon-free pressure-sensitive copy paper for application forms, contracts, etc., upper paper-middle paper ... lower paper is stacked as one set and glued on the side with a set glue, each set Adhesion and peeling are smooth every time, but if a pigment layer is provided on the surface of the upper paper, the suitability for peeling is lost. The reason for this is that the paper support itself is designed to have appropriate repellency and water repellency, but simply providing a pigment layer will reduce the repellency and water repellency, and the set glue will be more than the side Happens to infiltrate.

【0006】一方、特開平2−134282号公報に
は、紙支持体の表面に撥水剤を撥のり剤として含有した
顔料類を塗布して隠蔽層を設けると記載されており、本
発明者らが実験により評価すると、確かにのりづけ適性
向上に効果のあることが認められたが、比較的多量の撥
水剤が必要であるとか、効果的であっても分散、調液時
の泡立ちやすさ、又、機械的・熱的安定性に欠ける撥水
剤もあり、製造及び品質安定性は更に改良が望まれる。
On the other hand, JP-A-2-134282 describes that a concealing layer is provided by applying pigments containing a water repellent as a repellent on the surface of a paper support. When Luo evaluated by experiment, certainly, but it is effective for gluing aptitude improvement was observed, Toka there is a need for a relatively large amount of the water-repellent agents, even in the effective dispersion, foaming at the time of liquid preparation Some water repellents lack ease of use and mechanical and thermal stability, and further improvement in production and quality stability is desired.

【0007】従って本発明の目的は発色剤シートである
上用紙表面の印刷適性及びのりづけ適性向上を図り、更
にその製造工程時にまったく問題のない実用的に優れた
ノーカーボン感圧複写紙用発色剤シートを提供すること
である。
Accordingly, an object of the present invention is to improve the printability and the gluing suitability of the surface of the upper paper, which is a color former sheet, and to provide a practically excellent color for carbonless pressure-sensitive copying paper without any problem during the production process. It is to provide an agent sheet.

【0008】[0008]

【課題を解決するための手段】本発明者らは広範な実験
・研究を鋭意進めた結果、塗布製造工程でまったく問題
なく、然も色インキ着肉性・鮮明性等の印刷適性向上及
び色インキ裏抜け防止が図られ、更にのりづけ適性に優
れたノーカーボン感圧複写紙用発色剤シートを開発し
た。即ち、本発明は発色剤シートの表面に白色顔料と
色顔料100重量部に対して、0.01〜10重量部の
アルキルエチレン尿素を主成分とした顔料層を設けるこ
とにより目的は達成され、更にアルキル基が炭素数10
〜18のアルキルエチレン尿素とすることにより顕著な
効果が得られる。
As a result of extensive studies and researches, the present inventors have found no problems in the coating and manufacturing process, and yet have improved printing suitability such as color ink deposition and clarity, and color. We have developed a colorant sheet for carbon-free pressure-sensitive copying paper that prevents ink strike-through and has excellent gluing suitability. That is, the present invention is a white pigment and white on the surface of the color former sheet
The object is achieved by providing a pigment layer containing 0.01 to 10 parts by weight of an alkylethylene urea as a main component with respect to 100 parts by weight of a color pigment.
A remarkable effect can be obtained by setting the alkyl ethylene urea to 1818.

【0009】本発明に使用する白色顔料は、例えば具体
的にはアルミニウム、亜鉛、マグネシウム、カルシウ
ム、チタン等の炭酸塩、酸化物、水酸化物、硫酸塩及び
天然シリカ、クレー、ゼオライト、カオリン、焼成カオ
リン等の粘土類を含む無機系白色顔料;合成シリカ、ス
チレン樹脂、メラミン樹脂、アクリル樹脂、尿素樹脂等
の共重合体を含む有機系顔料から1種又は2種以上選ば
れる。
The white pigments used in the present invention include, for example, carbonates, oxides, hydroxides, sulfates and natural silicas such as aluminum, zinc, magnesium, calcium and titanium, clays, zeolites, kaolins and the like. One or more inorganic white pigments including clays such as calcined kaolin; and one or more inorganic pigments including organic pigments including copolymers such as synthetic silica, styrene resin, melamine resin, acrylic resin, and urea resin.

【0010】本発明に使用するアルキルエチレン尿素
、好ましくはアルキル基が炭素数10〜18のエチレ
ン尿素であり、例えば具体的にはデシルエチレン尿素、
ウンデシルエチレン尿素、ミリスチルエチレン尿素、ペ
ンタデシルエチレン尿素、セチルエチレン尿素、オレイ
ルエチレン尿素、ステアリルエチレン尿素であり、特に
好ましくはラウリルエチレン尿素、オレイルエチレン尿
素、ステアリルエチレン尿素である。アルキルエチレン
尿素の添加量は白色顔料100重量部に対して、0.0
1〜10重量部である。好ましくは0.05〜8重量部
であり、特に好ましくは0.1〜3重量部である。0.
01重量部未満ではのりづけ適性向上が殆ど図れず、1
0重量部を越えると色インキ着肉性が劣り、特に2〜3
色と色インキを多色印刷方式で使用頻度の高いオフセッ
ト印刷適性が得られず、実用的商品価値の低下を招く。
The alkyl ethylene urea used in the present invention is preferably an ethylene urea in which the alkyl group has 10 to 18 carbon atoms.
Undecyl ethylene urea, myristyl ethylene urea, pentadecyl ethylene urea, cetyl ethylene urea, oleyl ethylene urea, and stearyl ethylene urea, particularly preferably lauryl ethylene urea, oleyl ethylene urea, and stearyl ethylene urea. The addition amount of the alkyl ethylene urea is 0.0
It is 1 to 10 parts by weight. Preferably it is 0.05 to 8 parts by weight, particularly preferably 0.1 to 3 parts by weight. 0.
If the amount is less than 01 parts by weight, the improvement of gluing suitability is hardly achieved, and 1
When the amount exceeds 0 parts by weight, the color ink deposition property is inferior.
Color and color ink cannot be applied in a multi-color printing method, which is frequently used for offset printing, and the practical commercial value is reduced.

【0011】本発明に使用する結着剤としては、例えば
具体的には穀物澱粉、α化澱粉、酸化澱粉、エーテル化
澱粉、エステル化澱粉等の澱粉類:膠、ゼラチン、カゼ
イン、コラーゲン、ビスコース等のプロティン類:メチ
ルセルロース、エチルセルロース、ヒドロキシエチルセ
ルロース、カルボキシメチルセルロース等のセルロース
類:寒天、アルギン酸ナトリウム、アラビアゴム等の多
糖類:ポリビニルアルコール、ポリビニルピドリドン、
ポリアクリル酸、ポリアクリルアミド、マレイン酸共重
合物等の水溶性高分子;スチレンブタジエン系、アクリ
ルニトリル−ブタジエン系、メチルメタアクリレート−
ブタジエン系、アクリル酸エステル系、酢酸ビニル系ラ
テックスエマルジョン及びこれらのカルボキシ変性物が
挙げられる。
Examples of the binder used in the present invention include starches such as cereal starch, pregelatinized starch, oxidized starch, etherified starch, and esterified starch: glue, gelatin, casein, collagen, bis Proteins such as courses: celluloses such as methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose: polysaccharides such as agar, sodium alginate, and gum arabic: polyvinyl alcohol, polyvinylpyridone,
Water-soluble polymers such as polyacrylic acid, polyacrylamide, and maleic acid copolymer; styrene butadiene, acrylonitrile-butadiene, methyl methacrylate
Examples include butadiene-based, acrylate-based, vinyl acetate-based latex emulsions and carboxy-modified products thereof.

【0012】更に本発明の顔料層は所望により、分散
剤、防腐剤、消泡剤、ダスティング防止剤と共に顔料層
用塗布液と成し、エアーナイフ、カーテン、ロール、ブ
レード等の塗布方式で0.5〜10g/m2(乾燥重量
固形分)になるよう塗布される。 好ましくは1.5〜
8g/m2であり、特に好ましくは3〜6g/m2であ
る。 0.5g/m2未満では色インキの着肉性・鮮明
性向上に効果が得られず、10g/m2を越えると顔料
層が厚くなり印字発色能力が低下する。
Further, the pigment layer of the present invention is formed into a coating liquid for the pigment layer together with a dispersant, a preservative, an antifoaming agent and an anti-dusting agent, if desired, and is coated by an air knife, curtain, roll, blade or the like. It is applied so as to be 0.5 to 10 g / m 2 (dry weight solid content). Preferably 1.5 to
Was 8 g / m 2, particularly preferably 3 to 6 g / m 2. If the amount is less than 0.5 g / m 2 , the effect of improving the inking property and sharpness of the color ink cannot be obtained. If the amount exceeds 10 g / m 2 , the pigment layer becomes thick and the printing color developing ability decreases.

【0013】本発明に使用するノーカーボン感圧複写紙
用発色剤シートの発色剤としては、例えば具体的には
3,3−ビス(p−ジメチルアミノフェニル)−6−ジ
メチルアミノフタリド、3−(p−ジメチルアミノフェ
ニル)−3−(1,2−ジメチルインドール−3−イ
ル)フタリド、3,3−ビス(1,2−ジメチルインド
ール−3−イル)−5−ジメチルアミノフタリド、3,
3−ビス(9−エチルカルバゾール−3−イル)−6−
ジメチルアミノフタリド等のトリアリルメタン系;4,
4’−ビス−ジメチルアミノベンズヒドリルベンジルエ
ーテル、N−ハロフェニル−ロイコオーラミン、N−
2,4,5−トリクロロフェニルロイコオーラミン等の
ジフェニルメタン系;ベンゾイルロイコメチレンブル
ー、p−ニトロベンゾイルロイコメチレンブルー等のチ
アジン系;3−メチル−スピロ−ジナフトピラン、3−
フェニル−スピロ−ジナフトピラン、3−プロピル−ス
ピロ−ジベンゾピラン等のスピロ系;ローダミン−B−
アニリノラクタム、ローダミン(p−ニトロアニリノ)
ラクタム、ローダミン(o−クロロアニリノ)ラクタム
等のラクタム系;3−ジメチルアミノ−7−メトキシフ
ルオラン、3−ジエチルアミノ−6−メチル−7−クロ
ロフルオラン、3−(N−エチル−p−トルイジノ)−
7−メチルフルオラン、3−ジエチルアミノ−7−N−
メチルアミノフルオラン、3−ジエチルアミノ−7−ジ
ベンジルアミノフルオラン、3−(N−エチル−p−ト
ルイジノ)−6−メチル−7−フェニルアミノフルオラ
ン、3−ジエチルアミノ−6−メチル−7−フェニルア
ミノフルオラン、3−(N−シクロヘキシル−N−メチ
ルアミノ)−6−メチル−7−フェニルアミノフルオラ
ン、3−ピペリジノ−6−メチル−7−フェニルアミノ
フルオラン、3−ジエチルアミノ−6−メチル−7−キ
シリジノフルオラン等のフルオラン系等が挙げられる。
Examples of the color former of the color former sheet for carbonless pressure-sensitive copying paper used in the present invention include, for example, 3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide, -(P-dimethylaminophenyl) -3- (1,2-dimethylindol-3-yl) phthalide, 3,3-bis (1,2-dimethylindol-3-yl) -5-dimethylaminophthalide, 3,
3-bis (9-ethylcarbazol-3-yl) -6
Triallylmethanes such as dimethylaminophthalide; 4,
4'-bis-dimethylaminobenzhydryl benzyl ether, N-halophenyl-leuco auramine, N-
Diphenylmethanes such as 2,4,5-trichlorophenylleuco auramine; thiazines such as benzoyl leucomethylene blue and p-nitrobenzoyl leucomethylene blue; 3-methyl-spiro-dinaphthopyran;
Spiro-based compounds such as phenyl-spiro-dinaphthopyran and 3-propyl-spiro-dibenzopyran; rhodamine-B-
Anilinolactam, rhodamine (p-nitroanilino)
Lactams such as lactam and rhodamine (o-chloroanilino) lactam; 3-dimethylamino-7-methoxyfluoran, 3-diethylamino-6-methyl-7-chlorofluoran, 3- (N-ethyl-p-toluidino) −
7-methylfluoran, 3-diethylamino-7-N-
Methylaminofluoran, 3-diethylamino-7-dibenzylaminofluoran, 3- (N-ethyl-p-toluidino) -6-methyl-7-phenylaminofluoran, 3-diethylamino-6-methyl-7- Phenylaminofluoran, 3- (N-cyclohexyl-N-methylamino) -6-methyl-7-phenylaminofluoran, 3-piperidino-6-methyl-7-phenylaminofluoran, 3-diethylamino-6 And fluoran compounds such as methyl-7-xylidinofluoran.

【0014】これらの発色剤は高沸点溶媒である例えば
具体的にはジイソプロピルナフタレンで代表されるアル
キルナフタレン類、1−フェニル−1−キシリルエタン
で代表されるジアリルアルカン類、イソプロピルビフェ
ニルで代表されるアルキルビフェニル類、その他トリア
リルジメタン類、アルキルベンゼン類、ベンジルナフタ
レン類、ジアリルアルキレン類、アリルインダン類等の
芳香族炭化水素;フタル酸ジブチル、マレイン酸ジオク
チル等で代表されるカルボン酸エステル化合物;トリク
レジルフォスフェートで代表されるリン酸エステル系化
合物;ヒマシ油、大豆油、綿実油等の植物油又はその変
性油;鉱物油のような天然物高沸点留分(脂肪族炭化水
素より成る)等に溶解され、本発明においても使用す
る。
These color formers are high-boiling solvents, for example, specifically, alkylnaphthalenes represented by diisopropylnaphthalene, diallylalkanes represented by 1-phenyl-1-xylylethane, and alkyl represented by isopropylbiphenyl. Biphenyls, other aromatic hydrocarbons such as triallyldimethanes, alkylbenzenes, benzylnaphthalenes, diallylalkylenes, allylindanes; carboxylate compounds represented by dibutyl phthalate, dioctyl maleate; Phosphate ester compounds represented by zyl phosphate; vegetable oils such as castor oil, soybean oil, and cottonseed oil or modified oils thereof; dissolved in high-boiling fractions (consisting of aliphatic hydrocarbons) of natural products such as mineral oils It is also used in the present invention.

【0015】これらの発色剤内蔵マイクロカプセルは小
麦澱粉、微細パルプ粉末等の緩衝剤、ポリビニルアルコ
ール、ラテックスエマルジョン等の結着剤と共にエアー
ナイフ、カーテン等の塗布方式で3〜8g/m2(乾燥
重量固形分)塗布されるが、特に好ましくは4〜6g/
2である。
[0015] These microcapsules containing a color forming agent are coated with a buffer such as wheat starch and fine pulp powder and a binder such as polyvinyl alcohol and latex emulsion by an air knife, a curtain or the like in a coating method of 3 to 8 g / m 2 (dry). Weight solids), but particularly preferably 4 to 6 g /
m 2 .

【0016】上記の高沸点溶媒に溶解された発色剤はコ
アセルベーション法、インサイチュー法、界面重合法等
の方法により、マイクロカプセル化され内蔵する。一
方、これらの発色剤と接触して発色反応を起こす顕色剤
としては、例えば具体的には酸性白土、アタパルガイト
・クレー等の天然粘土鉱物、酸性白土を鉱酸で処理した
活性白土、特開昭7−15996号公報記載の半合成固
体酸等の無機系顕色剤;各種フェノール化合物、ノボラ
ック型フェノール樹脂、芳香族カルボン酸多価金属塩及
び最近提案された特開昭3−186729号、同63−
254124号公報記載のサリチル酸樹脂の多価金属化
物が挙げられ、本発明においても使用される。
The color former dissolved in the above-mentioned high boiling point solvent is microencapsulated by a method such as a coacervation method, an in-situ method or an interfacial polymerization method. On the other hand, examples of a color developer that causes a color reaction upon contact with these color formers include, for example, acid clay, natural clay minerals such as attapulgite clay, activated clay obtained by treating acid clay with a mineral acid, and JP Inorganic developers such as semi-synthetic solid acids described in JP-A-7-15996; various phenol compounds, novolak-type phenol resins, polyvalent metal salts of aromatic carboxylic acids, and recently proposed JP-A-3-186729. Id 63-
No. 254124 discloses polyvalent metal products of salicylic acid resin, which are also used in the present invention.

【0017】[0017]

【実施例】以下、最も代表的な実施例により本発明の好
適態様と優れた効果を具体的に説明する。尚、以下の部
はすべて重量部であり、%はすべて重量%を表す。
The preferred embodiments and excellent effects of the present invention will be specifically described below with reference to the most typical examples. In addition, the following parts are all parts by weight, and all% represent weight%.

【0018】実施例1 水120部に分散剤であるピロリン酸ナトリウム0.5
部を溶解した後、炭酸カルシウム粉末100部を徐々に
添加・分散後、10%酸化澱粉水溶液50部、50%カ
ルボキシ変性スチレンブタジエン共重合体ラテックスエ
マルジョン30部を順次添加して完全分散後、20%デ
シルエチレン尿素分散液0.5部を添加し、顔料層用塗
布液とした。この塗布液を坪量40g/m2の上質紙の
表面に塗布量が4g/m2(乾燥重量固形分)となるよ
うにブレードコーターで塗布し、顔料層シートを作成し
た。
Example 1 A dispersing agent, sodium pyrophosphate 0.5 in 120 parts of water
After dissolution of 100 parts of calcium carbonate powder, 100 parts of calcium carbonate powder is gradually added and dispersed, 50 parts of a 10% aqueous solution of oxidized starch and 30 parts of 50% carboxy-modified styrene-butadiene copolymer latex emulsion are sequentially added and completely dispersed. % Decylethylene urea dispersion was added in an amount of 0.5 part to prepare a coating liquid for a pigment layer. This coating solution was applied to the surface of a high-quality paper having a basis weight of 40 g / m 2 by a blade coater so that the coating amount was 4 g / m 2 (dry weight solid content), to prepare a pigment layer sheet.

【0019】高沸点炭化水素溶媒:フェニルキシリルエ
タン95部に発色剤:3,3−(p−ジメチルアミノフ
ェニル)−6−ジメチルアミノフタライド5部を溶解し
た液がメラミン−ホルムアルデヒド樹脂壁膜として内蔵
したマイクロカプセルを作成した。水400部に平均粒
径20μmの小麦澱粉25部を添加し、分散・混合後、
40%発色剤内蔵マイクロカプセル250部、48%ア
ルカリ増粘型スチレン−ブタジエン共重合体ラテックス
エマルジョン42部を徐々に順次分散・混合し、発色剤
用塗布液とした。この塗布液を上記顔料層シートの裏面
に塗布量が4g/m2(乾燥重量固形分)となるように
エアーナイフコーターで塗布し、発色剤シートを作成し
た。
High-boiling hydrocarbon solvent: 95 parts of phenylxylylethane, 5 parts of 3,3- (p-dimethylaminophenyl) -6-dimethylaminophthalide dissolved in 5 parts of melamine-formaldehyde resin wall film The microcapsule built as was made. To 400 parts of water was added 25 parts of wheat starch having an average particle size of 20 μm, and after dispersion and mixing,
250 parts of microcapsules containing a 40% color-forming agent and 42 parts of a 48% alkali-thickened styrene-butadiene copolymer latex emulsion were gradually dispersed and mixed to obtain a coating solution for a color-forming agent. This coating solution was applied to the back surface of the pigment layer sheet with an air knife coater so that the coating amount was 4 g / m 2 (dry weight solid content), to prepare a color former sheet.

【0020】実施例2 実施例1の20%デシルエチレン尿素分散液0.5部を
20%ステアリルエチレン尿素分散液0.5部に同量置
き換えて顔料層用塗布液とした以外は同様の方法で顔料
層シートを作成し、次いで発色剤シートを作成した。
Example 2 A similar method was used except that 0.5 part of the 20% decylethylene urea dispersion of Example 1 was replaced with 0.5 part of a 20% stearylethylene urea dispersion in the same amount to obtain a coating liquid for a pigment layer. To form a pigment layer sheet, and then a color former sheet.

【0021】実施例3 実施例1の炭酸カルシウム粉末100部と20%デシル
エチレン尿素分散液0.5部を焼成カオリン粉末15
部、炭酸カルシウム粉末85部と20%ステアリルエチ
レン尿素分散液0.5部に同量置き換えて顔料層用塗布
液とした以外は同様の方法で顔料層シートを作成し、次
いで発色剤シートを作成した。
Example 3 100 parts of the calcium carbonate powder of Example 1 and 0.5 part of a 20% decylethylene urea dispersion were mixed with calcined kaolin powder 15
, A pigment layer sheet was prepared in the same manner except that the same amount was replaced with 85 parts of calcium carbonate powder and 0.5 part of a 20% stearyl ethylene urea dispersion to prepare a pigment layer coating solution, and then a color former sheet was prepared. did.

【0022】実施例1の炭酸カルシウム粉末100部と
20%デシルエチレン尿素分散液0.5部をカオリン粉
末30部、炭酸カルシウム粉末60部、酸化チタン粉末
10部と20%ステアリルエチレン尿素分散液0.5部
に同量置き換えて顔料層用塗布液とした以外は同様の方
法で顔料層シートを作成し、次いで発色剤シートを作成
した。
100 parts of the calcium carbonate powder of Example 1 and 0.5 part of a 20% decylethylene urea dispersion were mixed with 30 parts of kaolin powder, 60 parts of calcium carbonate powder, 10 parts of titanium oxide powder and 20% stearylethylene urea dispersion 0 A pigment layer sheet was prepared in the same manner except that the same amount was replaced with 0.5 part to prepare a pigment layer coating solution, and then a color former sheet was prepared.

【0023】比較例1 実施例1の発色剤用塗布液を坪量40g/m2の上質紙
の裏面に塗布量が4g/m2(乾燥重量固形分)となる
ようにエアーナイフコーターで塗布し、発色剤シートを
作成した。
Comparative Example 1 The coating solution for a color former of Example 1 was applied to the back surface of a high-quality paper having a basis weight of 40 g / m 2 by an air knife coater so that the application amount was 4 g / m 2 (dry weight solid content). Then, a coloring agent sheet was prepared.

【0024】比較例2 実施例1の顔料層用塗布液の20%デシルエチレン尿素
分散液0.5部を除いて顔料層用塗布液とした以外は同
様の方法で顔料層シートを作成し、次いで発色剤シート
を作成した。
Comparative Example 2 A pigment layer sheet was prepared in the same manner as in Example 1 except that a pigment layer coating liquid was used except that 0.5 parts of a 20% decylethylene urea dispersion of the pigment layer coating liquid was used. Next, a color former sheet was prepared.

【0025】◎試験方法 ○白紙不透明度 JIS.P−8138の方法に基ずき、ハンター白色計
で実施例1〜4、比較例1〜2で作成した発色剤シート
の白紙不透明度を測定した。数値は大きい程、不透明度
が高いことを示す。
◎ Test method ○ White paper opacity JIS. Based on the method of P-8138, the opacity of the white sheets of the color former sheets prepared in Examples 1 to 4 and Comparative Examples 1 and 2 was measured with a Hunter white meter. The higher the numerical value, the higher the opacity.

【0026】○色インキ着肉性・鮮明性及び裏抜け評価 PS版を製版作成し、色インキ印刷順序を1色目墨、2
色目藍、3色目黄とした。宮腰製作所製“ミヤスター1
8型”オフセット印刷機により印刷スピード(100m
/min)、シートテンション(10kg/cm)、イ
ンキロールよりのインキ送り量(ツメ5)と同条件に
し、実施例1〜4、比較例1〜2で作成した発色剤シー
トの表面に上記色インキを順次印刷し、多色印刷した
後、印刷面をルーペ(拡大鏡)で観察し、色インキ着肉
性・鮮明性を評価した。○印は印刷インキ濃度が高く、
着肉性に優れ、画像は鮮明であり、×印はインキ濃度に
濃淡があり、着肉性・鮮明性は劣る。更に多色印刷した
発色剤シートの裏面より目視観察し、裏抜け度合いを評
価した。○印は殆ど裏抜けがない。×印は裏抜けがあ
る。
○ Evaluation of color ink inking property, clarity and strike-through A PS plate was prepared, and the color ink printing order was changed to 1 color ink, 2 color ink,
The color was indigo and the color was yellow. "Miya Star 1" manufactured by Miyakoshi
Printing speed (100m) by 8 "offset printing machine
/ Min), the sheet tension (10 kg / cm), and the ink feed amount from the ink roll (claw 5) under the same conditions, and the above-described color was applied to the surface of the color former sheet prepared in Examples 1-4 and Comparative Examples 1-2. After the inks were sequentially printed and multicolor printed, the printing surface was observed with a loupe (magnifying glass) to evaluate the color ink deposition and sharpness. ○ mark has high printing ink density,
It is excellent in the inking property, the image is clear, and the X mark has shading in the ink density, and the inking property and the sharpness are inferior. Further, the back surface of the multicolor printed color former sheet was visually observed to evaluate the degree of strike-through. O mark shows almost no strikethrough. Crosses have strikethroughs.

【0027】○撥のり性 実施例1〜4、比較例1〜2で作成した発色剤シートの
表面にのりづけ用のりである市販三菱ノーカーボン感圧
複写紙用「NCR紙接着剤」をマイクロピペットで20
0μl滴下し、30分後にその直径を測定した。
Glue repellency "NCR paper adhesive" for commercially available Mitsubishi carbonless pressure-sensitive copying paper, which is a glue on the surface of the color former sheet prepared in Examples 1-4 and Comparative Examples 1-2, was micro-coated. 20 with pipette
0 μl was dropped, and the diameter was measured 30 minutes later.

【0028】○剥離性 一般ノーカーボン感圧複写紙を伝票類として使用するよ
うに、実施例1〜4、比較例1〜2で作成した発色剤シ
ートである上用紙−市販三菱NCR紙ブルー発色用中用
紙(N−40)−市販三菱NCR紙下用紙(N−40)
を1セットとして200セット重ね合わせ、タテ15c
m×ヨコ10cmの大きさになるようにギロチンカッタ
ーで断裁し、側面を整えた後、上記市販「NCR紙接着
剤」をハケで側面に均一になるよう塗布し、加重1.5
Kgを掛け、1時間後の各セット間の剥離性を評価し
た。○印は各セット毎の剥離性良好、×印不良とした。
剥離 Releasability Upper paper which is a color former sheet prepared in Examples 1-4 and Comparative Examples 1-2 so as to use general carbonless pressure-sensitive copying paper as a slip-commercially available Mitsubishi NCR paper blue color In-use paper (N-40)-Commercially available Mitsubishi NCR paper under paper (N-40)
As one set, superimpose 200 sets, vertical 15c
After cutting with a guillotine cutter so as to have a size of mx 10 cm in width and adjusting the side surface, the above-mentioned commercially available "NCR paper adhesive" is uniformly applied to the side surface with a brush, and a weight of 1.5 is applied.
Kg was applied to evaluate the peelability between each set after 1 hour. The mark 良好 indicates good peelability for each set, and the mark 不良 poor.

【0029】実施例1〜4、比較例1〜2についての各
試験測定結果、評価結果を表1、表2に示した。
Tables 1 and 2 show the results of the test measurements and evaluation results for Examples 1 to 4 and Comparative Examples 1 and 2.

【0030】[0030]

【表1】 [Table 1]

【0031】[0031]

【表2】 [Table 2]

【0032】[0032]

【発明の効果】紙支持体の裏面にマイクロカプセルを塗
布した撥色剤シートにおいて、実施例の如く発色剤シー
トの表面に白色顔料とアルキル基が炭素数10〜18の
アルキルエチレン尿素を主成分とした顔料層を設けるこ
とにより、不透明度が高く、更に色インキ着肉性・鮮明
性等の印刷適性に優れ、多色印刷が可能であり、且つの
りづけ適性が良好な実用的商品価値の高いノーカーボン
感圧複写紙用発色剤シートが開発された。
According to the color repellent sheet in which microcapsules are coated on the back surface of a paper support, a white pigment and an alkylethylene urea having an alkyl group having 10 to 18 carbon atoms are formed on the surface of the color former sheet as in the embodiment. By providing a pigment layer, the opacity is high, the printability such as the color ink inking property and the sharpness is excellent, the multicolor printing is possible, and the gluing aptitude is good. Highly carbon-free color former sheets for pressure-sensitive copying paper have been developed.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】支持体の裏面に電子供与性染料を内蔵する
マイクロカプセルを塗布した発色剤シートにおいて、表
面に白色顔料と白色顔料100重量部に対して、0.0
1〜10重量部のアルキルエチレン尿素を主成分とした
顔料層を設けノーカーボン感圧複写紙用発色剤シー
ト。
1. A color former sheet coated with a microcapsule containing an electron donating dye on the back surface of a support, the surface of which is white pigment and 100 parts by weight of white pigment.
1-10 parts by weight alkyl ethylene urea carbonless pressure-sensitive copying paper for color former sheet provided with a pigment layer mainly composed of.
JP3081393A 1991-03-19 1991-03-19 Color former sheet for carbonless pressure-sensitive copying paper Expired - Lifetime JP3027216B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3081393A JP3027216B2 (en) 1991-03-19 1991-03-19 Color former sheet for carbonless pressure-sensitive copying paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3081393A JP3027216B2 (en) 1991-03-19 1991-03-19 Color former sheet for carbonless pressure-sensitive copying paper

Publications (2)

Publication Number Publication Date
JPH04290785A JPH04290785A (en) 1992-10-15
JP3027216B2 true JP3027216B2 (en) 2000-03-27

Family

ID=13745061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3081393A Expired - Lifetime JP3027216B2 (en) 1991-03-19 1991-03-19 Color former sheet for carbonless pressure-sensitive copying paper

Country Status (1)

Country Link
JP (1) JP3027216B2 (en)

Also Published As

Publication number Publication date
JPH04290785A (en) 1992-10-15

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