JP2601502B2 - Color-developed sheet for pressure-sensitive recording - Google Patents
Color-developed sheet for pressure-sensitive recordingInfo
- Publication number
- JP2601502B2 JP2601502B2 JP63061682A JP6168288A JP2601502B2 JP 2601502 B2 JP2601502 B2 JP 2601502B2 JP 63061682 A JP63061682 A JP 63061682A JP 6168288 A JP6168288 A JP 6168288A JP 2601502 B2 JP2601502 B2 JP 2601502B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- color
- acid
- sensitive recording
- adhesive
- 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
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- Color Printing (AREA)
Description
【発明の詳細な説明】 （Ａ）産業上の利用分野 本発明は感圧記録用顕色シートの製造方法に関するも
のであり、特に顕色剤としてサリチル酸誘導体および／
または、その多価金属塩を使用する顕色剤シートに関す
る。The present invention relates to a method for producing a color developing sheet for pressure-sensitive recording, and particularly relates to a salicylic acid derivative and / or a color developing agent.
Alternatively, the present invention relates to a developer sheet using the polyvalent metal salt.
（Ｂ）従来の技術 電子供与性のほぼ無色の有機化合物（以下発色剤と称
する）と電子受容性の個体酸（以下顕色剤と称する）と
の接触反応にて発色像を得ることは古くから知られてい
る。この現象を具体的に利用したものとしては、例えば
感圧複写紙（例、米国特許2505470号、同2505489号明細
書）や感熱記録紙（例、特公昭45-14039号公報）などが
ある。(B) Prior Art Obtaining a color image by a contact reaction between an electron-donating almost colorless organic compound (hereinafter referred to as a color former) and an electron-accepting solid acid (hereinafter referred to as a developer) has long been practiced. Known from. Specific examples of the use of this phenomenon include pressure-sensitive copying paper (eg, US Pat. Nos. 2,505,470 and 2,505,489) and thermosensitive recording paper (eg, Japanese Patent Publication No. 45-14039).
一般に感圧複写紙用顕色剤としては、活性白土、酸性
白土、アタパルガイトなどの無機個体酸が多用されてき
た。しかし、これらの粘土系個体酸は、発色画像の湿気
や光に対する安定性に欠けている。このため、サリチル
酸誘導体および／または、その多価金属塩が用いられる
ようになってきた。サリチル酸誘導体多価金属塩は、そ
れ自身顕色能を有するが、サリチル酸誘導体は多価金属
塩の酸化物、水酸化物、炭酸塩との併用により、顕色剤
として用いられる（特公昭52-20883号公報）。しかし、
これらの顕色剤は発色濃度、発色速度が十分でなく、し
かも、例え発色濃度や発色速度が十分のものができたと
しても感圧複写紙にとって発色と並んで重要な特性であ
る汚れ特性に欠けるものしか得られないのが現状であ
る。ここで言う汚れ特性とは、塗工、スリット、印刷な
どの他、実使用上での意図しない不本意な発色汚れ（ス
マッジ）を言う。In general, inorganic solid acids such as activated clay, acid clay, and attapulgite have been frequently used as a developer for pressure-sensitive copying paper. However, these clay-based solid acids lack the stability of a color image to moisture and light. For this reason, salicylic acid derivatives and / or polyvalent metal salts thereof have been used. The salicylic acid derivative polyvalent metal salt itself has a color developing ability, but the salicylic acid derivative is used as a color developer in combination with oxides, hydroxides and carbonates of the polyvalent metal salt (Japanese Patent Publication No. No. 20883). But,
These color developing agents do not have sufficient color density and color developing speed, and even if they have sufficient color density and color developing speed, they have a stain characteristic which is an important characteristic along with color development for pressure-sensitive copying paper. At present, you can only get what you lack. The dirt characteristics referred to here include, in addition to coating, slitting, printing, and the like, unintentional undesired coloring stains (smudges) in actual use.
感圧記録用顕色シートで用いられている接着剤には、
タンパク質、セルロース、サッカロースの如き水溶性天
然高分子化合物やポリビニルアルコール、ポリビニルピ
ロリドン、スチレン−無水マレイン酸共重合体、ポリア
クリル酸、スチレン−ブタジエンラテックスなどの如き
水溶性合成高分子化合物やラテックス類、市販のポリア
クリルアミドなどがある。Adhesives used in pressure-sensitive recording developer sheets include:
Proteins, cellulose, water-soluble natural polymer compounds such as saccharose and polyvinyl alcohol, polyvinylpyrrolidone, styrene-maleic anhydride copolymer, polyacrylic acid, water-soluble synthetic polymer compounds such as styrene-butadiene latex and latex, There are commercially available polyacrylamide and the like.
接着剤の役割りは感圧複写紙用顕色剤シートに於いて
は、単に平判状支持体ベースとの結着のみにとどまらず
特性にも大きく関与してくる。The role of the adhesive in the color developer sheet for pressure-sensitive copying paper is not limited to the binding to the plain support base, but also greatly affects the properties.
とりわけ感圧複写紙用顕色剤シートにとって最も重要
な特性である発色性能との関係が最も深い。従って、好
ましい接着剤を用いれは少ない顕色剤量で濃い発色画像
が得られるが接着剤の選択を誤ると多い量でも十分な発
色濃度が得られないこともある。発色向上のため、この
接着剤としてカルボキシ変性ラテックスを用いたもの
（特公昭53-9126、特公昭54-18165）があるが、十分で
はなかった。市販品としてのポリアクリルアミドはアク
リルアミド、アクリル酸、アクリルニトリル、ブチルア
クリレート或いは特殊なものを付加させたようなものも
あるが、その殆どは３〜４成分系の共重合物である。こ
れらの使用材料種の選択や使用比率は、それぞれの使用
目的に合った形で設定されており、過去にサリチル酸誘
導体及び／または、その多価金属塩を使用した感圧複写
紙用顕色剤シートに適したポリアクリルアミドは提案さ
れていなかった。市販品のポリアクリルアミドを用いた
場合（特公昭58-41759）、発色能力は十分ではなかっ
た。In particular, it has the deepest relationship with the color forming performance, which is the most important characteristic for the color developer sheet for pressure-sensitive copying paper. Therefore, when a preferable adhesive is used, a dark color-developed image can be obtained with a small amount of the developer, but if the adhesive is selected incorrectly, a sufficient color density may not be obtained even with a large amount. For the purpose of improving color development, there are adhesives using carboxy-modified latex (JP-B-53-9126, JP-B-54-18165), but they have not been sufficient. Commercially available polyacrylamides include acrylamide, acrylic acid, acrylonitrile, butyl acrylate, and those to which special substances are added, but most of them are copolymers of three to four components. The selection of the types of materials used and the proportions used are set in accordance with the purpose of use, and a developer for pressure-sensitive copying paper using a salicylic acid derivative and / or a polyvalent metal salt thereof in the past. No suitable polyacrylamide for the sheet has been proposed. When a commercially available polyacrylamide was used (Japanese Patent Publication No. 58-41759), the coloring ability was not sufficient.
（Ｃ）発明が解決しようとする課題 そこで、本発明者はサリチル酸誘導体および／また
は、その多価金属塩を用いて、発色濃度向上、およびス
マッジ特性改良の多くの試験を行なった結果、画像発色
濃度が著しく高く、発色速度が速く、しかも汚れ特性の
良好な顕色シートを提供するものである。(C) Problems to be Solved by the Invention Therefore, the present inventor conducted a number of tests for improving color density and improving smudge characteristics using a salicylic acid derivative and / or a polyvalent metal salt thereof. An object of the present invention is to provide a color developing sheet having a remarkably high density, a high color developing speed and good stain characteristics.
（Ｄ）課題を解決するための手段 本発明はサリチル酸誘導体及び／または、その多価金
属塩並びにカオリンを主成分とする塗層にアクリルアミ
ド対アクリル酸の重合比が重量比で99.5対0.5〜90対10
の範囲の接着剤を含む感圧記録用顕色シートである。本
発明で用いられるサリチル酸誘導体としてはサリチル酸
もしくはサリチル酸のベンゼン核がアルキル・シクロア
ルキル・アリール、もしくはハロゲン・ヒドロキシなど
の基を１から４個置換基として持つもの、又はサリチル
酸もしくはサリチル酸のベンゼン核が１から３個の上記
置換基を有するものとアルデヒドとの重合物などを挙げ
ることができる。最も代表的なものとしては、サリチル
酸、５−tert−ブチルサリチル酸、3,5−ジ−tert−ブ
チルサリチル酸、3,5−ジ−tert−アミルサリチル酸、
3,5−ジ−sec−ブチルサリチル酸、５−ノニルサリチル
酸、３−メチル−５−イソアミルサリチル酸、５−イソ
アミルサリチル酸、３−シクロヘキシルサリチル酸、５
−シクロヘキシルサリチル酸、3,5−ジシクロヘキシル
サリチル酸、3,5−ジ（α，α−ジメチルベンジル）サ
リチル酸、3,5−ジベンジルサリチル酸、３−（α，α
−ジメチルベンジル）−５−tert−ブチルサリチル酸、
3,5−ジ（α−メチルベンジル）サリチル酸、３−フェ
ニルサリチル酸、3,5−ジフェニルサリチル酸、,3−フ
ェニル−５−tert−ブチルサリチル酸、３−ベンジル−
５−フェニルサリチル酸、3,5−ジクロルサリチル酸、
３−クロル−５−メチルサリチル酸、３−クロル−５−
エチルサリチル酸、３−クロル−５−フェニルサリチル
酸、サリチル酸−ホルムアルデヒド重合体、2,6−ジヒ
ドロキシ安息香酸−ホルムアルデヒド重合体などが用い
られる。以上のようなサリチル酸誘導体は、すべて多価
金属と塩を形成し、用いられる多価金属として、亜鉛、
マグネシウム、チタン、アルミニウム、カルシウム、コ
バルト、ニッケル、マンガン、スズ、銅などがある。ま
た、塩でない酸の形の該誘導体と金属化合物とを混合使
用してもよい。(D) Means for Solving the Problems The present invention provides a coating layer containing a salicylic acid derivative and / or a polyvalent metal salt thereof and kaolin as a main component, wherein the polymerization ratio of acrylamide to acrylic acid is 99.5 to 0.5 to 90 by weight. Vs. 10
Is a pressure-sensitive recording developer sheet containing an adhesive in the range of (1). Examples of the salicylic acid derivative used in the present invention include those in which the benzene nucleus of salicylic acid or salicylic acid has 1 to 4 substituents such as alkyl / cycloalkyl / aryl or halogen / hydroxy, or the benzene nucleus of salicylic acid or salicylic acid And a polymer of the compound having three substituents and an aldehyde. Most typical are salicylic acid, 5-tert-butylsalicylic acid, 3,5-di-tert-butylsalicylic acid, 3,5-di-tert-amylsalicylic acid,
3,5-di-sec-butylsalicylic acid, 5-nonylsalicylic acid, 3-methyl-5-isoamylsalicylic acid, 5-isoamylsalicylic acid, 3-cyclohexylsalicylic acid, 5
-Cyclohexylsalicylic acid, 3,5-dicyclohexylsalicylic acid, 3,5-di (α, α-dimethylbenzyl) salicylic acid, 3,5-dibenzylsalicylic acid, 3- (α, α
-Dimethylbenzyl) -5-tert-butylsalicylic acid,
3,5-di (α-methylbenzyl) salicylic acid, 3-phenylsalicylic acid, 3,5-diphenylsalicylic acid, 3,3-phenyl-5-tert-butylsalicylic acid, 3-benzyl-
5-phenylsalicylic acid, 3,5-dichlorosalicylic acid,
3-chloro-5-methylsalicylic acid, 3-chloro-5-
Ethyl salicylic acid, 3-chloro-5-phenylsalicylic acid, salicylic acid-formaldehyde polymer, 2,6-dihydroxybenzoic acid-formaldehyde polymer and the like are used. The above salicylic acid derivatives all form salts with polyvalent metals, and zinc,
Magnesium, titanium, aluminum, calcium, cobalt, nickel, manganese, tin, copper and the like. Further, the derivative in the form of an acid which is not a salt and a metal compound may be mixed and used.
本発明で用いられるカオリンとは、一般的には無機顔
料に属し、アルミニウム、ケイ素を主体とする粘土鉱物
である。本発明ではカオリンの比が重量比で1:0.5〜1:8
の範囲が好ましく、より好ましくは1:2〜1:5の範囲であ
る。カオリン比が0.5より少なくなると印字した時の発
色文字のにじみが大きくなり好ましくない。又、カオリ
ン比が８より大きくなると発色文字が不連続となる文字
切れ現象を起こすため不都合である。Kaolin used in the present invention generally belongs to inorganic pigments and is a clay mineral mainly composed of aluminum and silicon. In the present invention, the ratio of kaolin is 1: 0.5 to 1: 8 by weight.
Is more preferable, and more preferably in the range of 1: 2 to 1: 5. If the kaolin ratio is less than 0.5, the bleeding of colored characters when printing is undesirably large. On the other hand, if the kaolin ratio is larger than 8, the color-developed characters will be discontinuous, which is inconvenient.
本発明の接着剤は、従来紙塗工用接着剤として用いら
れることはなかったものでアクリルアミド対アクリル酸
の重合比が重量比で99.5:0.5〜90:10の範囲のものを使
用する。アクリルアミドとアクリル酸の重合比率でアク
リル酸を0.5％より少なくすると合成反応が不安定とな
り一定の品質のものが得られにくくなる。又、10％以上
のアクリル酸比にすると多くなるに従って発色濃度の低
下が顕著となってくるので好ましくない。もちろん本発
明による接着剤以外の接着剤も目的とする品質設計に応
じた範囲内での併用は可能である。その他、消泡剤、滑
剤、分散剤、浸透剤、耐水化剤など必要に応じて使用す
ることができる。このようにして得られた塗液はエアー
ナイフコーター、ブレードコーター、カーテンコータ
ー、ロッドコーター、ゲートロールコーターなどで塗布
されるが塗布方法は本発明に於いては特に限定されな
い。The adhesive of the present invention has not been conventionally used as an adhesive for paper coating, and has a polymerization ratio of acrylamide to acrylic acid in the range of 99.5: 0.5 to 90:10 by weight. If acrylic acid is less than 0.5% in the polymerization ratio of acrylamide and acrylic acid, the synthesis reaction becomes unstable, and it becomes difficult to obtain a product of constant quality. On the other hand, when the acrylic acid ratio is 10% or more, the decrease in color density becomes remarkable as the ratio increases, which is not preferable. Of course, adhesives other than the adhesive according to the present invention can be used together within the range according to the intended quality design. In addition, an antifoaming agent, a lubricant, a dispersant, a penetrant, a waterproofing agent and the like can be used as required. The coating liquid thus obtained is applied by an air knife coater, blade coater, curtain coater, rod coater, gate roll coater, or the like, but the coating method is not particularly limited in the present invention.
（Ｅ）作用 本発明に於いて汚れ特性が良く画像発色濃度の良好な
感圧記録用顕色シートが得られるが、発色濃度に関して
は接着剤の効果が大きいが、カオリンとの併用によりさ
らに発色濃度は向上する。発色濃度はマイクロカプセル
が破壊された時、染料を含む内相油が速やかに顕色剤層
へ浸透するのが好ましいが、この意味から本発明の接着
剤を使用すると、浸透しやすくなっているものと推定さ
れている。又、汚れ特性についてはカオリンの効果が大
きい。感圧記録用顕色シートの汚れ特性は上用紙とのズ
レによる摩擦汚れが主なものである。従って、感圧記録
用顕色シートの摩擦抵抗が大きい方が汚れ易く摩擦抵抗
は小さい方が望ましい。各種顔料を用いた感圧記録用顕
色シートの摩擦抵抗を調べてみるとカオリンが最も摩擦
抵抗が小さいため汚れにくかった。(E) Action In the present invention, a pressure-sensitive recording developer sheet having good stain characteristics and good image color density can be obtained. However, the effect of the adhesive on the color density is great, but the color is further improved by the combined use with kaolin. The concentration improves. When the microcapsules are destroyed, it is preferable that the internal phase oil containing the dye quickly penetrates into the color developer layer when the microcapsules are destroyed. In this sense, the use of the adhesive of the present invention facilitates the penetration. It is estimated that In addition, the effect of kaolin on the stain characteristics is great. The stain characteristic of the pressure-sensitive recording color developing sheet is mainly frictional stain due to deviation from the upper sheet. Therefore, it is desirable that the frictional resistance of the pressure-sensitive recording color developing sheet be large, and that the frictional resistance be small. When the frictional resistance of a pressure-sensitive recording color developing sheet using various pigments was examined, it was found that kaolin had the smallest frictional resistance and thus was difficult to stain.
（Ｆ）実施例 実施例によって本発明を更に詳しく説明するが実施例
中の「部」は全て重量部を表す。(F) Examples The present invention will be described in more detail with reference to Examples, but all "parts" in Examples represent parts by weight.
実施例１ 3,5−ジ−tert−ブチルサリチル酸亜鉛13部を１％ポ
リビニルアルコール水溶液280部に分散し、これに顔料
としてカオリン100部、５％ピロリン酸ナトリウム10
部、40％ポリアクリル酸ナトリウム４部を加え、ボール
ミルで２日間微粉砕した。次いで接着剤としてアクリル
アミド対アクリル酸が99.5対0.5（重量比）にて共重合
させた20％水溶液60部を加えてよく分散したものを塗液
とした。Example 1 13 parts of zinc 3,5-di-tert-butylsalicylate was dispersed in 280 parts of a 1% aqueous solution of polyvinyl alcohol, and 100 parts of kaolin as a pigment and 5% of sodium pyrophosphate 10% were dispersed therein.
And 4 parts of 40% sodium polyacrylate, and pulverized with a ball mill for 2 days. Next, 60 parts of a 20% aqueous solution in which acrylamide and acrylic acid were copolymerized at a ratio of 99.5 to 0.5 (weight ratio) was added as an adhesive, and the mixture was dispersed well to obtain a coating liquid.
この塗液を40g/m2の上質紙に塗布量が乾燥重量で7g/m
2となるようにブレードコーターで塗布し、感圧記録紙
用顕色剤シートを得た。The coating amount of fine paper coating solution 40 g / m 2 is 7g dry weight / m
The mixture was applied with a blade coater so as to obtain No. 2, and a developer sheet for pressure-sensitive recording paper was obtained.
実施例２ 実施例１のうち接着剤としてアクリルアミド対アクリ
ル酸の重合比率が重量比で90対10のものを固形分で同じ
量用いた以外は実施例１と同様にして感圧記録紙用顕色
剤シートを得た。Example 2 The same procedure as in Example 1 was repeated except that the same adhesive was used as an adhesive having a polymerization ratio of acrylamide to acrylic acid of 90:10 by weight, and the same amount of solids was used. A colorant sheet was obtained.
実施例３ 実施例１の接着剤のうち固形量の半分をデンプン（日
本食品加工（株）MS＃4600）に置き換えた以外は実施例
１と同様にして感圧記録紙用顕色剤シートを得た。Example 3 A developer sheet for pressure-sensitive recording paper was prepared in the same manner as in Example 1, except that half of the solid content of the adhesive of Example 1 was replaced with starch (MS # 4600, Japan Food Processing Co., Ltd.). Obtained.
実施例４ 実施例１の顔料を、カオリン40部と炭酸カルシウム60
部にした以外は実施例１と同様にして感圧記録紙用顕色
剤シートを得た。Example 4 The pigment of Example 1 was replaced with 40 parts of kaolin and 60 parts of calcium carbonate.
A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1 except that the above parts were used.
実施例５ 実施例１の顔料を、カオリン７部と炭酸カルシウム93
部にした以外は実施例１と同様にして感圧記録紙用顕色
剤シートを得た。Example 5 The pigment of Example 1 was replaced with 7 parts of kaolin and 93 calcium carbonate.
A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1 except that the above parts were used.
比較例１ 実施例１の接着剤をカルボキシ変性SBRに置き換えた
以外は実施例１と同様にして感圧記録紙用顕色剤シート
を得た。Comparative Example 1 A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1, except that the adhesive in Example 1 was replaced with carboxy-modified SBR.
但し、実施例１と同じ塗層表面の強度を得るには固形
分で16部を必要とした。However, in order to obtain the same strength of the coating layer surface as in Example 1, 16 parts by solid content were required.
比較例２ 実施例１の接着剤を酸化デンプンに置き換えた以外は
実施例１と同様にして感圧記録紙用顕色剤シートを得
た。Comparative Example 2 A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1 except that the adhesive of Example 1 was replaced with oxidized starch.
比較例３ 実施例１のうち、接着剤としてポリビニルアルコール
（日本合成（株）製商品名ゴーセノールNM-11）に置き
換えた以外は実施例１と同様にして、感圧記録紙用顕色
剤シートを得た。但し、実施例１に表面強度を揃えた場
合のポリビニルアルコールの必要量は10部（固形分）で
あった。Comparative Example 3 A developer sheet for pressure-sensitive recording paper was prepared in the same manner as in Example 1 except that polyvinyl alcohol (trade name: Gohsenol NM-11, manufactured by Nippon Gosei Co., Ltd.) was used as the adhesive. I got However, when the surface strength was made uniform in Example 1, the required amount of polyvinyl alcohol was 10 parts (solid content).
比較例４ 実施例１のうち、接着剤としてアクルリアミド80.5
％、アクリルニトリル12.0％、アクリル酸5.0％、ブチ
ルアクリレート2.5％の重合比（重量比）を持つ市販品
（荒川化学（株）製ポリマセット＃600）を実施例１と
同量使用した以外は実施例１と同様にして、感圧記録紙
用顕色剤シートを得た。Comparative Example 4 In Example 1, Acluriamide 80.5 was used as an adhesive.
%, Acrylonitrile 12.0%, acrylic acid 5.0%, butyl acrylate 2.5% polymerization ratio (weight ratio), a commercial product (Arakawa Chemical Co., Ltd. polymer set # 600) was used in the same amount as in Example 1. In the same manner as in Example 1, a developer sheet for pressure-sensitive recording paper was obtained.
比較例５ 実施例１のうち、接着剤としてアクリルアミド対アク
リル酸の重合比率が重量比で80対20のものを用いた以外
は実施例１と同様にして感圧記録紙用顕色剤シートを得
た。Comparative Example 5 A developer sheet for pressure-sensitive recording paper was prepared in the same manner as in Example 1 except that, as the adhesive, the one having a polymerization ratio of acrylamide to acrylic acid of 80:20 by weight was used. Obtained.
比較例６ 実施例１のうち接着剤としてアクリルアミド対アクリ
ル酸の重合比率が重量比で50対50のものを用いた以外は
実施例１と同様にして感圧記録紙用顕色剤シートを得
た。Comparative Example 6 A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1 except that the adhesive in which the polymerization ratio of acrylamide to acrylic acid was 50:50 by weight was used as the adhesive. Was.
比較例７ 実施例１の顔料を、炭酸カルシウム100部とした以外
は、実施例１と同様にして感圧記録紙用顕色剤シートを
得た。Comparative Example 7 A developer sheet for pressure-sensitive recording paper was obtained in the same manner as in Example 1, except that the pigment of Example 1 was changed to 100 parts of calcium carbonate.
実施例１〜５、比較例１〜７で作成した顕色シートを
評価するため、市販の三菱NCR紙上用紙ブルーを塗布面
が対向するように重ねてカレンダー加圧を行ない、顕色
シート塗布面を全面発色させた。In order to evaluate the developed sheets prepared in Examples 1 to 5 and Comparative Examples 1 to 7, a commercially available paper on Mitsubishi NCR paper was stacked so that the coated surfaces faced each other and calendered. Was developed over the entire surface.
表１には、ニップ圧290Kg/cm2のカレンダーロール通
過１分後、及び24時間後の発色濃度とそれらの比
（％）、スマッジを示した。（発色濃度の数値は高い方
が濃い色を示し、発色濃度の比（％）は高い方が発色速
度が速い事を示す。） 表１に示したスマッジ（％）は、市販の三菱NCR上用
紙をCB面が上になるように固定し、その上に適当な大き
さのCF紙を対向するように重ね、さらにCF紙の上に直径
5cm、重さ3Kgの錘をのせて、CF紙を錘ごと50cmの距離移
動させた時のCF面の反射率（％）を測定した。（反射率
が大きいほど、発色汚れが少ない） 実施例６〜10,比較例８〜14 実施例１〜５、比較例１〜７の3,5−ジ−tert−ブチ
ルサリチル酸亜鉛の代わりに、3,5−ジ−tert−ブチル
サリチル酸10部と酸化亜鉛３部を用いた以外は、実施例
１〜５、比較例１〜７と同様にし、各々を実施例６〜1
0、比較例８〜14とした。Table 1 shows the coloring densities, their ratios (%), and smudges after 1 minute and 24 hours after passing through a calender roll with a nip pressure of 290 kg / cm 2 . (The higher the color density value, the darker the color, and the higher the color density ratio (%), the faster the color development speed.) The smudges (%) shown in Table 1 are those on a commercially available Mitsubishi NCR. Fix the paper so that the CB side is facing up, stack an appropriate size of CF paper on top of it, and then put the diameter on the CF paper.
A weight of 5 cm and a weight of 3 kg was placed, and the reflectance (%) of the CF surface when the CF paper was moved with the weight by a distance of 50 cm was measured. (The higher the reflectance, the less color stains) Examples 6 to 10, Comparative Examples 8 to 14 Instead of zinc 3,5-di-tert-butylsalicylate of Examples 1 to 5 and Comparative Examples 1 to 7, 10 parts of 3,5-di-tert-butylsalicylic acid Examples 1 to 5 and Comparative Examples 1 to 7, except that 3 parts of zinc oxide were used.
0 and Comparative Examples 8 to 14.
実施例６〜10、比較例８〜14において試験をした結果
を表２に示す。Table 2 shows the results of the tests performed in Examples 6 to 10 and Comparative Examples 8 to 14.
実施例11〜15、比較例15〜21 実施例１〜５、比較例１〜７の3,5−ジ−tert−ブチ
ルサリチル酸亜鉛の代わりに、3,5−ジ（α−メチルベ
ンジル）サリチル酸亜鉛13部を用いた以外は、実施例１
〜５、比較例１〜７と同様にし、各々を実施例11〜15、
比較例15〜21とした。 Examples 11 to 15 and Comparative Examples 15 to 21 Instead of zinc 3,5-di-tert-butylsalicylate of Examples 1 to 5 and Comparative Examples 1 to 7, 3,5-di (α-methylbenzyl) salicylic acid Example 1 except that 13 parts of zinc were used
-5, Comparative Examples 1-7, and Examples 11-15,
Comparative Examples 15 to 21 were made.
実施例11〜15、比較例15〜21において試験をした結果
を表３に示す。Table 3 shows the results of the tests performed in Examples 11 to 15 and Comparative Examples 15 to 21.
表１〜３に示されるように、本発明のCF紙は発色濃
度、発色速度、発色汚れ（スマッジ）とも顕著に向上し
ている事が分かる。 As shown in Tables 1 to 3, it can be seen that the CF paper of the present invention has significantly improved color density, color developing speed, and color stain (smudge).
（Ｇ）発明の効果 以上のように本発明の顕色シートは、発色速度が従来
のものより速く、発色濃度も濃いので、印字直後でも、
良い画像濃度が得られ、実用的に読みやすくなる特性を
具備している。(G) Effects of the Invention As described above, the color developing sheet of the present invention has a higher color developing speed and a higher color developing density than conventional ones.
Good image density is obtained, and it has characteristics that make it practically easy to read.
Claims (2)
価金属塩並びにカオリンを主成分とする塗層にアクリル
アミド：アクリル酸の重合比が重量比で、99.5:0.5〜9
0:10の範囲の接着剤を含む感圧記録用顕色シート。1. A coating layer comprising a salicylic acid derivative and / or a polyvalent metal salt thereof and kaolin as a main component has a polymerization ratio of acrylamide: acrylic acid of 99.5: 0.5 to 9 by weight.
A pressure-sensitive recording developer sheet containing an adhesive in the range of 0:10.
価金属塩とカオリンの比が重量比で1:0.5〜1:8の範囲で
ある請求項１記載の感圧複写紙用顕色剤シート。2. The developer sheet for pressure-sensitive copying paper according to claim 1, wherein the ratio of salicylic acid derivative and / or polyvalent metal salt thereof to kaolin is in the range of 1: 0.5 to 1: 8 by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63061682A JP2601502B2 (en) | 1988-03-14 | 1988-03-14 | Color-developed sheet for pressure-sensitive recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63061682A JP2601502B2 (en) | 1988-03-14 | 1988-03-14 | Color-developed sheet for pressure-sensitive recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01234288A JPH01234288A (en) | 1989-09-19 |
| JP2601502B2 true JP2601502B2 (en) | 1997-04-16 |
Family
ID=13178280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63061682A Expired - Fee Related JP2601502B2 (en) | 1988-03-14 | 1988-03-14 | Color-developed sheet for pressure-sensitive recording |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2601502B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104377B2 (en) * | 1988-06-28 | 1994-12-21 | 新王子製紙株式会社 | Colored paper for pressure-sensitive copying paper |
-
1988
- 1988-03-14 JP JP63061682A patent/JP2601502B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01234288A (en) | 1989-09-19 |
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