JPH0313385A - Thermal recording material - Google Patents
Thermal recording materialInfo
- Publication number
- JPH0313385A JPH0313385A JP1150297A JP15029789A JPH0313385A JP H0313385 A JPH0313385 A JP H0313385A JP 1150297 A JP1150297 A JP 1150297A JP 15029789 A JP15029789 A JP 15029789A JP H0313385 A JPH0313385 A JP H0313385A
- Authority
- JP
- Japan
- Prior art keywords
- dye
- pts
- parts
- color
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 8
- 150000002989 phenols Chemical class 0.000 claims abstract 2
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 abstract description 19
- 238000000576 coating method Methods 0.000 abstract description 19
- 239000006185 dispersion Substances 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- -1 phenol compound Chemical class 0.000 abstract description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract description 4
- 229920001225 polyester resin Polymers 0.000 abstract description 4
- 239000004645 polyester resin Substances 0.000 abstract description 4
- 239000004926 polymethyl methacrylate Substances 0.000 abstract description 4
- 239000004925 Acrylic resin Substances 0.000 abstract description 3
- 229920000178 Acrylic resin Polymers 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract 4
- 229910000040 hydrogen fluoride Inorganic materials 0.000 abstract 4
- 239000007788 liquid Substances 0.000 description 33
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000000975 dye Substances 0.000 description 15
- 230000035945 sensitivity Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004014 plasticizer Substances 0.000 description 6
- 239000002612 dispersion medium Substances 0.000 description 5
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 238000001454 recorded image Methods 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Description
【発明の詳細な説明】
（Ｉ）産業上の利用分野
本発明は、感熱記録材料に関し、更に詳しく述べるなら
ば、記録像の保存安定性に優れ、さらに熱応答性にも優
れた感熱記録材料に関するものである。DETAILED DESCRIPTION OF THE INVENTION (I) Industrial Application Field The present invention relates to a heat-sensitive recording material, and more specifically, a heat-sensitive recording material that has excellent storage stability of recorded images and also has excellent thermal responsiveness. It is related to.
（２）従来の技術
感熱記録材料は、一般に支持体上に電子供与性の通常無
色ないし淡色の染料前駆体と電子受容性の顕色剤とを主
成分とする感熱記録層を設け、熱ヘッド、熱ペン、レー
ザー光等で加熱することにより染料前駆体と顕色剤とが
瞬時反応し、記録画像が得られるもので、このような材
料は良く知られている。かかる感熱記録材料は比較的簡
単な装置で記録が得られ、保守が容易であること、騒音
の発生がないことなどの利点があり、計測用記録計、フ
ァクシミリ、コンピューターの端末機、ラベル、乗車券
等自動券売機など広範囲の分野に利用されている。(2) Conventional technology Heat-sensitive recording materials generally have a heat-sensitive recording layer containing an electron-donating, usually colorless or light-colored dye precursor and an electron-accepting color developer as main components on a support. When heated with a thermal pen, laser light, etc., the dye precursor and color developer react instantaneously to obtain a recorded image, and such materials are well known. Such heat-sensitive recording materials have the advantages of being able to record with relatively simple equipment, being easy to maintain, and not generating noise, and are widely used in measuring recorders, facsimiles, computer terminals, labels, and vehicles. It is used in a wide range of fields such as automatic ticket vending machines.
近年、キャッシュレス回数券、磁気回数券、道路通行券
、プリペイドカード等において磁気カード類の普及には
目ざましいものがある。この場合、磁気記録層を施した
支持体のもう一方の面には顧客がカードを使用する毎に
変動する残額表示とか、あるいはカードの有効期間、発
行口等を可視情報として記録する必要がある。このよう
な記録を行う手段としては、前述の感熱記録をはじめ、
感熱転写、ジアゾ複写方式等が考えられるが、これらの
中で、とくに感熱記録方式は、単に加熱するだけで鮮明
な記録画像が得られることから磁気カードの裏面を構成
する記録層として大いに着目されている。BACKGROUND ART In recent years, magnetic cards such as cashless coupons, magnetic coupons, road passes, prepaid cards, etc. have become rapidly popular. In this case, it is necessary to record visible information on the other side of the support with a magnetic recording layer, such as the remaining amount that changes each time the customer uses the card, the card's validity period, and the issuing port. . Means for such recording include the aforementioned thermal recording,
Thermal transfer, diazo copying, and other methods are considered, but among these, the thermal recording method is attracting a lot of attention as a recording layer that makes up the back side of a magnetic card because a clear recorded image can be obtained simply by heating. ing.
しかしながら、磁気カードに施される感熱記録層は、通
常のファクシミリ用と比べて、その用途から明かなとお
り、顧客カードに対する取扱い性、使用頻度等において
きわめて過酷な実用特性を要求されている。従って、従
来技術にあるロイコ染料系の感熱記録材料を、そのまま
磁気カード等の記録層に適用すると保存安定性をはじめ
、耐水性、耐薬品性等に重大な支障を生じ、実用上大き
な問題をかかえるものであった。However, as is clear from its use, the heat-sensitive recording layer applied to magnetic cards is required to have extremely harsh practical characteristics in terms of ease of handling customer cards, frequency of use, etc., compared to those for ordinary facsimile machines. Therefore, if the conventional leuco dye-based heat-sensitive recording material is applied as it is to the recording layer of a magnetic card, it will cause serious problems in storage stability, water resistance, chemical resistance, etc., and pose a serious problem in practical use. It was something to hold on to.
（３）発明が解決しようとする課題
記録像の保存安定性を改良するために、特開昭６２−１
９８４９６．特開昭１３２−２０１４７９などに各種の
染料、顕色剤等が提案されている。特に支持体として合
成紙、合成樹脂を用い、分散媒体として有機溶剤を用い
る場合、改良に伴って記録層の白色度が低下したり、熱
応答性が悪くなる等の新たな欠点が付随するため、必ず
しも満足すべき結果は得られていない。また、支持体に
合成樹脂等を用い、分散媒体として水を用いる方法が特
開昭０２−１８０２５等に提案されているが、かなり強
固なオーバーコート層が必要である。(3) Problems to be solved by the invention In order to improve the storage stability of recorded images,
98496. Various dyes, color developers, etc. have been proposed in Japanese Patent Application Laid-Open No. 132-201479. In particular, when synthetic paper or synthetic resin is used as a support and an organic solvent is used as a dispersion medium, new drawbacks such as a decrease in the whiteness of the recording layer and a worsening of thermal responsiveness accompany improvements. However, satisfactory results have not always been obtained. Furthermore, a method using a synthetic resin or the like as a support and water as a dispersion medium has been proposed in JP-A-18025-1989, etc., but this requires a fairly strong overcoat layer.
かかる現状に鑑み、本発明は、記録層中に含有せしめる
染料、顕色剤について鋭意検討の結果、上記の如き欠点
を伴うことなく、磁気カード等の記録層に要求されるき
びしい保存安定性および耐薬品性を有し、地肌部の白色
度の高い感熱記録材料を提供するものである。In view of the current situation, the present invention has been developed as a result of intensive studies on dyes and color developers to be contained in the recording layer, and has been developed to meet the severe storage stability required for the recording layer of magnetic cards, etc., without the above-mentioned drawbacks. The object of the present invention is to provide a heat-sensitive recording material that has chemical resistance and a high degree of whiteness in the background area.
（４）課題を解決するための手段
本発明によれば、即ち、ロイコ染料として（Ｉ）に示す
フルオラン染料、顕色剤として、（■）および（ＩＩり
に示すフェノール化合物を含む感熱記録材料が提供され
る。(4) Means for Solving the Problems According to the present invention, a heat-sensitive recording material containing a fluoran dye shown in (I) as a leuco dye and a phenol compound shown in (■) and (II) as a color developer is provided.
（Ｉ）
本発明において、フルオラン染料と顕色剤の使用比率、
顕色剤の混合比率は、適宜選択されるもので、特に限定
するものではないが、一般にフルオラン染料１重量部に
対して０．５〜ＩＯ！ｌｆｉ量部、好ましくは１〜４重
量部程度の顕色剤が使用される。(I) In the present invention, the usage ratio of fluoran dye and color developer,
The mixing ratio of the color developer is appropriately selected and is not particularly limited, but is generally 0.5 to IO! to 1 part by weight of fluoran dye. lfi parts, preferably about 1 to 4 parts by weight of the color developer is used.
さらに、顕色剤（Ｕ）および（ＩＩＩ）の混合比率は、
顕色剤（■）１重量部に対して０．１〜１０重皿部、好
ましくは０．２５〜３重量部程度の顕色剤（ＩＩＩ）を
使用するのが望ましい。これは、融点が若干高いが酸性
度が高（保存性に寄与できる顕色剤（ＩＩ）と、融点が
低く感度が高くなる顕色剤（ｍ）の両者の特徴を引き出
すために最適な混合比率である。Furthermore, the mixing ratio of the color developer (U) and (III) is
It is desirable to use about 0.1 to 10 parts by weight, preferably about 0.25 to 3 parts by weight, of the color developer (III) per 1 part by weight of the color developer (■). This is an optimal mixture to bring out the characteristics of both the color developer (II), which has a slightly high melting point but high acidity (which contributes to storage stability), and the color developer (m), which has a low melting point and high sensitivity. It is a ratio.
さらに本発明の支持体としては、従来の紙を用いること
もできるが、塩化ビニル樹脂、ポリエステル樹脂、ポリ
プロピレン樹脂等のシート、合成紙、または、ラミネー
ト紙等の高度の耐水性、耐薬品性、耐久性を有した合成
樹脂シートを使用するのが望ましい。分散媒体に水を用
いて合成樹脂上に感熱塗液を塗布することも可能である
が、水系バインダーを用いるため耐水性を付与するのが
難しい。ところで、本発明のフルオラン染料は有機溶剤
への溶解度が従来品に比べ低く、感熱塗液中で発色せず
に塗布できるため、地肌カブリが生じず、白色度の高い
感熱記録フィルムが作成できる。そこで、親油性バイン
ダーを用い有機溶剤を分散媒体として容品に合成樹脂上
に塗布することが可能であり、耐水性も向上させること
ができる。Further, as the support of the present invention, conventional paper can be used, but sheets of vinyl chloride resin, polyester resin, polypropylene resin, etc., synthetic paper, or laminated paper with high water resistance, chemical resistance, etc. It is desirable to use a durable synthetic resin sheet. Although it is possible to apply a heat-sensitive coating liquid onto a synthetic resin using water as a dispersion medium, it is difficult to impart water resistance because a water-based binder is used. By the way, the fluoran dye of the present invention has a lower solubility in organic solvents than conventional products, and can be applied in a heat-sensitive coating solution without developing color, so a heat-sensitive recording film with high whiteness can be produced without causing background fog. Therefore, it is possible to coat the synthetic resin onto the container using a lipophilic binder and an organic solvent as a dispersion medium, and the water resistance can also be improved.
前述のフルオラン染料、顕色剤を含む塗液の調整は、−
船釣にベンゼン、トルエン、キシレン、メチルエチルケ
トン、メチルイソブチルケトン、酢酸チェル、メチルセ
ルソルブ、ブチルセルソルブ、イソホロン等の有機溶剤
を分散媒体とし、ボールミル、アトライター、ペイント
コンディショナー等の粉砕機により、粉砕、分散される
。The preparation of the coating liquid containing the above-mentioned fluoran dye and color developer is as follows: -
For boat fishing, use an organic solvent such as benzene, toluene, xylene, methyl ethyl ketone, methyl isobutyl ketone, chel acetate, methyl cellosolve, butyl cellosolve, or isophorone as a dispersion medium, and use a pulverizer such as a ball mill, attritor, or paint conditioner to pulverize. , distributed.
次に、各分散液を混合し、通常バインダーとして、ポリ
メチルメタクリレートのようなアクリル系樹脂、ポリエ
ステル樹脂等が、全固形分ｔｏｉｆｉ量部に対し１〜３
０重量部、好ましくは２〜１０匝量部程度添加される。Next, each dispersion liquid is mixed, and an acrylic resin such as polymethyl methacrylate, a polyester resin, etc. is usually added as a binder to 1 to 3 parts of the total solid content toifi.
It is added in an amount of about 0 parts by weight, preferably about 2 to 10 parts by weight.
さらに、填料として、酸化チタン等の無機顔料を添加す
ることもある。Furthermore, an inorganic pigment such as titanium oxide may be added as a filler.
このようにして調整された感熱塗液を用いて支持体上に
記録層を形成する方法については特に限定されるもので
なく、例えば、エアーナイフコーティング、ブレードコ
ーティング、スクリーン印刷等により塗液を塗布、乾燥
する。また、塗液の塗布量についても特に限定されるも
のではなく、通常乾燥重量で２〜１２ｇ：／ゴ、好まし
くは５〜８ｇ／イ程度の範囲で２整される。There are no particular limitations on the method of forming a recording layer on the support using the heat-sensitive coating liquid prepared in this way. For example, the coating liquid is applied by air knife coating, blade coating, screen printing, etc. ,dry. Further, the amount of the coating liquid to be applied is not particularly limited, and is usually set in a dry weight range of 2 to 12 g/g, preferably 5 to 8 g/g.
本発明の感熱記録材料は、記録層中に三量化フルオラン
染料と顕色剤として２種類の化合物を組み合わせて含有
しているため、優れた耐湿性、耐可塑剤性、耐油性を発
揮するが、これらの特性等をさらに高めるために記録層
上に溶剤タイプ、例えば、ポリウレタン樹脂、アクリル
系樹脂、ポリエステル樹脂、エポキシ樹脂、弗素系樹脂
等の各踵ポリマーを主成分とするオーバーコート層を設
けることもできる。The heat-sensitive recording material of the present invention exhibits excellent moisture resistance, plasticizer resistance, and oil resistance because the recording layer contains a combination of a trimerized fluoran dye and two types of compounds as color developers. In order to further enhance these characteristics, an overcoat layer mainly composed of a solvent type polymer such as polyurethane resin, acrylic resin, polyester resin, epoxy resin, fluorine resin, etc. is provided on the recording layer. You can also do that.
さらにオーバーコート層中には、印刷適性やスティッキ
ングを改善するために、必要に応じてステアリン酸亜鉛
、ステアリン酸カルシウム等の滑剤、その他各種助剤を
適宜添加することができる。Furthermore, in order to improve printability and sticking, lubricants such as zinc stearate and calcium stearate, and other various auxiliary agents can be appropriately added to the overcoat layer, if necessary.
（５）作 用
本発明の感熱記録材料は、地肌カブリがなく、発色感度
が優れるとともに、保存性に優れた発色画像を与えるこ
とができる。本発明の記録材料が、白色度に優れている
理由については、フルオラン染料の有機溶剤への溶解度
が従来品に比べ低く、感熱塗液中で発色せずに塗布でき
るため地肌カブリが生じない。また、可塑剤や油等にも
溶けにく（なるため耐薬品性等が向上したものと思われ
る。(5) Effect The heat-sensitive recording material of the present invention has no background fog, has excellent color development sensitivity, and can provide color images with excellent storage stability. The reason why the recording material of the present invention has excellent whiteness is that the solubility of the fluoran dye in organic solvents is lower than that of conventional products, and it can be coated in a heat-sensitive coating solution without developing color, so no background fogging occurs. In addition, it is difficult to dissolve in plasticizers, oils, etc. (this is thought to improve chemical resistance, etc.).
さらに、融点が若干高いが酸性度が高く保存性に寄与で
きる顕色剤（ｎ）と融点が低く感度が高くなる顕色剤（
ｍ）という両者の特徴を組み合わせることにより、増感
剤を使用せずに高感度が得られ、良好な保存安定性が得
られた。Furthermore, a color developer (n) has a slightly high melting point but is highly acidic and can contribute to storage stability, and a color developer (n) has a low melting point and increases sensitivity.
By combining the characteristics of both m), high sensitivity was obtained without using a sensitizer, and good storage stability was obtained.
以下に実施例及び比較例をあげて、本発明をさらに詳細
に説明するが、勿論これらに限定されるものではない。The present invention will be explained in more detail with reference to Examples and Comparative Examples below, but it is of course not limited thereto.
なお、実施例及び比較例において「部」は、特に断わら
ない限り「重量部」を示す。In the Examples and Comparative Examples, "parts" indicate "parts by weight" unless otherwise specified.
（６）実施例
実施例 １
［分散液Ａ］
フルオラン染料（Ｉ） ２０部ト
ル エ ン ８０部〔分散液Ｂ
］
３．４−ジヒドロキシフェニルニル−
トリルスルホン（ＩＩ ） ２０部ト
ル エ ン ８０部［分散液
Ｃ］
没食子酸ステアリン（ＩＩＩ） ２０部ト
ル エ ン ８０部これら
の組成物をそれぞれペイントコンディショナーをもちい
て平均粒子径３ｕＩｕになるまで粉砕、分散して分散液
Ａ、Ｂ、Ｃを調整した。(6) Examples Example 1 [Dispersion A] Fluoran dye (I) 20 parts
Luene 80 parts [Dispersion B
] 20 parts of 3.4-dihydroxyphenyl-tolylsulfone (II)
Luene 80 parts [Dispersion C] Stearic gallic acid (III) 20 parts Toluene 80 parts Each of these compositions was ground and dispersed using a paint conditioner until the average particle size was 3uIu, and Dispersion A was obtained. , B, and C were adjusted.
次いで、Ａ液１０部、Ｂ液５部、Ｃ液１５部、ポリメチ
ルメタクリレート（三菱レイヨン製）１０％トルエン溶
液１０部、トルエン５部を混合攪拌し塗液とした。得ら
れた塗液をポリエチレンテレフタレートフィルムに乾燥
後の塗布量が８ｇ／ｒｒｆによるように塗布乾燥した。Next, 10 parts of liquid A, 5 parts of liquid B, 15 parts of liquid C, 10 parts of a 10% toluene solution of polymethyl methacrylate (manufactured by Mitsubishi Rayon), and 5 parts of toluene were mixed and stirred to prepare a coating liquid. The obtained coating liquid was applied and dried on a polyethylene terephthalate film so that the coating amount after drying was 8 g/rrf.
さらに感熱層の上に、ステアリン酸亜鉛を含むポリメチ
ルメタクリレートのトルエン溶液をオーバーコート層と
して塗布乾燥し感熱記録フィルムを作成した。Furthermore, a toluene solution of polymethyl methacrylate containing zinc stearate was applied as an overcoat layer on the heat-sensitive layer and dried to prepare a heat-sensitive recording film.
実施例 ２
感熱塗液調整において、Ａ液ｌＯ部、Ｂ液７．５部、Ｃ
液１２，５部を使用した以外は実施例１と同様にして感
熱記録フィルムを得た。Example 2 In preparing a heat-sensitive coating liquid, 10 parts of liquid A, 7.5 parts of liquid B, C
A thermosensitive recording film was obtained in the same manner as in Example 1 except that 12.5 parts of the liquid was used.
実施例 ３
感熱塗液調整において、Ａ液ｌＯ部、Ｂ液ｌＯ部、Ｃ液
１０部を使用した以外は実施例１と同様にして感熱記録
フィルムを得た。Example 3 A heat-sensitive recording film was obtained in the same manner as in Example 1, except that 10 parts of liquid A, 10 parts of liquid B, and 10 parts of liquid C were used in preparing the heat-sensitive coating liquid.
実施例 ４
感熱塗液調整において、Ａ液１０部、Ｂ液１５部、Ｃ液
５部を使用した以外は実施例１と同様にして感熱記録フ
ィルムを得た。Example 4 A heat-sensitive recording film was obtained in the same manner as in Example 1, except that 10 parts of liquid A, 15 parts of liquid B, and 5 parts of liquid C were used in preparing the heat-sensitive coating liquid.
比較例 １
感熱塗液調整において、人波１０部、Ｃ液２ｏ部を使用
した以外は実施例１と同様にして感熱記録フィルムを得
た。Comparative Example 1 A heat-sensitive recording film was obtained in the same manner as in Example 1, except that 10 parts of human wave and 20 parts of liquid C were used in preparing the heat-sensitive coating liquid.
比較例 ２
感熱塗液調整において、Ａ液１０部、Ｂ液２ｏ部を使用
した以外は実施例１と同様にして感熱記録フィルムを得
た。Comparative Example 2 A heat-sensitive recording film was obtained in the same manner as in Example 1, except that 10 parts of liquid A and 20 parts of liquid B were used in preparing the heat-sensitive coating liquid.
比較例 ３
［分散液Ｄ］
３− （Ｎ−メチル−Ｎ−シクロ
ヘキシル）＝６−メチル−７−２０部
アニリノフルオラン
ト ル エ ン
８０部感熱塗液調整において、Ｄ液１ｏ
部、Ｃ液２ｏ部を使用した以外は実施例１と同様にして
感熱記録フィルムを得た。Comparative Example 3 [Dispersion D] 3-(N-Methyl-N-cyclohexyl)=6-methyl-7-20 parts Anilinofluorantoluene
80 parts In preparing the heat-sensitive coating liquid, 1 o of liquid D
A thermosensitive recording film was obtained in the same manner as in Example 1, except that 20 parts of liquid C and 20 parts of liquid C were used.
比較例 ４
［分散液Ｅ］
４．４′−イソプロピリデンジフェノール ２０部ト
ル エ ン
８０部感熱塗液、２部整におイテ、ＤＩ＆ｘ
ａ部、Ｅｌ＆２０部を使用した以外は実施例１と同様に
して感熱記録フィルムを得た。Comparative Example 4 [Dispersion E] 20 parts of 4.4'-isopropylidenediphenol
Le en
80 parts heat-sensitive coating liquid, 2 parts for adjustment, DI&x
A thermosensitive recording film was obtained in the same manner as in Example 1 except that part a and 20 parts of El were used.
かくして得られた７Ｆｆｉ類の感熱記録フィルムについ
て以下の評価試験を行いその結果を第１表に記載した。The following evaluation tests were conducted on the 7Ffi heat-sensitive recording film thus obtained, and the results are listed in Table 1.
［発色濃度］
大金電気製動感度試験機でパルス幅３０ａｓ、電圧１４
Ｖで印字して得られた記録像の発色濃度をマクベスａ度
計で測定した。[Color density] Pulse width 30 as, voltage 14 using Daikin Electric dynamic sensitivity tester
The color density of the recorded image obtained by printing with V was measured using a Macbeth a meter.
Ｃ地肌濃度］
地肌カブリの程度を評価するために、地肌部分の濃度を
マクベス濃度計で測定した。C Background Density] In order to evaluate the degree of background fog, the density of the background part was measured using a Macbeth densitometer.
Ｃ熱安定性］
印字後の感熱記録フィルムをＧＯ’Ｃで２４時間放置後
、その反射１度を１＃１定した。そして、以ドに示す式
で残存率を算出した。C Thermal Stability] After the printed heat-sensitive recording film was left in GO'C for 24 hours, the degree of reflection was determined as 1#1. Then, the survival rate was calculated using the formula shown below.
［温湿熱性］
印字後の感熱記録フィルムを４０”Ｃ１相対湿度９０％
で２４時間放置後、その反射濃度を測定した。そして、
残存率を同様に算出した。[Temperature, humidity and heat properties] After printing, the thermal recording film was heated to 40" C1 relative humidity 90%.
After being left for 24 hours, the reflection density was measured. and,
The residual rate was calculated in the same manner.
［耐可塑剤性］
印字後の感熱記録フィルムに、塩ビラツブを１００ｇ／
ｃ−の圧力、４０℃で２４時間密着させた後、その反射
濃度を測定した。そして、残存率を同様に算出した。[Plasticizer resistance] 100 g of PVC rubber was added to the heat-sensitive recording film after printing.
After being brought into close contact with each other for 24 hours at a pressure of c- and 40°C, the reflection density was measured. Then, the residual rate was calculated in the same manner.
第１表に示した結果より、顕色剤１）だけでは発色感度
がやや劣り、顕色剤（Ｉ［ｌ［）だけでは耐可塑剤性、
温湿熱性がやや劣った。さらに、従来の染料を用いると
耐可塑剤性がまったくないことがわかる。このように顕
色剤（Ｉ１）と顕色剤（ｍ）を、最適な混合比率で使用
することにより、高感度でかつ良好な保存安定性が得ら
れた。From the results shown in Table 1, the color development sensitivity is slightly inferior when using color developer 1) alone, and the plasticizer resistance is poor when using only color developer (I [l[)].
Temperature and humidity properties were slightly inferior. Furthermore, it can be seen that there is no plasticizer resistance when using conventional dyes. By using the color developer (I1) and the color developer (m) at an optimal mixing ratio in this manner, high sensitivity and good storage stability were obtained.
（以下余白）
（ア）発明の効果
第１表の結果から明かなように、本発明の感熱記録フィ
ルムは、地肌部分の白色度が高くかつ発色感度が同等で
あるにもかかわらず、いずれも発色画像の安定性に優れ
ており、特に耐可塑剤性、熱安定性、温湿熱性等に改善
の効果が著しい感熱記録材料であった。(Left below) (A) Effect of the invention As is clear from the results in Table 1, the thermal recording film of the present invention has a high degree of whiteness in the background portion and a similar color sensitivity, but both It was a heat-sensitive recording material with excellent stability of colored images, and in particular, significant improvements in plasticizer resistance, thermal stability, heat and humidity properties, etc.
Claims (1)
しめる顕色剤を設けた感熱記録材料において、ロイコ染
料として（Ｉ）に示すフルオラン染料を含有し、 ▲数式、化学式、表等があります▼ （Ｉ） 顕色剤として、（II）および（III）に示すフェノール
化合物を含有することを特徴とする感熱記録材料。 ▲数式、化学式、表等があります▼ （II） ▲数式、化学式、表等があります▼ （III）[Claims] A heat-sensitive recording material in which a leuco dye and a color developer that causes the leuco dye to develop color when heated are provided on a support, which contains a fluoran dye shown in (I) as the leuco dye, and has the following formula: There are chemical formulas, tables, etc. ▼ (I) A heat-sensitive recording material characterized by containing the phenolic compounds shown in (II) and (III) as a color developer. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (III)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1150297A JPH0313385A (en) | 1989-06-13 | 1989-06-13 | Thermal recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1150297A JPH0313385A (en) | 1989-06-13 | 1989-06-13 | Thermal recording material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0313385A true JPH0313385A (en) | 1991-01-22 |
Family
ID=15493924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1150297A Pending JPH0313385A (en) | 1989-06-13 | 1989-06-13 | Thermal recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0313385A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058548A (en) * | 1991-05-01 | 1993-01-19 | Tomoegawa Paper Co Ltd | Thermal recording medium |
| JPH0672037A (en) * | 1992-08-28 | 1994-03-15 | Nippon Paper Ind Co Ltd | Thermal recording sheet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63209992A (en) * | 1987-02-27 | 1988-08-31 | Oji Paper Co Ltd | Thermal recording material |
-
1989
- 1989-06-13 JP JP1150297A patent/JPH0313385A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63209992A (en) * | 1987-02-27 | 1988-08-31 | Oji Paper Co Ltd | Thermal recording material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058548A (en) * | 1991-05-01 | 1993-01-19 | Tomoegawa Paper Co Ltd | Thermal recording medium |
| JPH0672037A (en) * | 1992-08-28 | 1994-03-15 | Nippon Paper Ind Co Ltd | Thermal recording sheet |
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