JPH0334473B2 - - Google Patents
Info
- Publication number
- JPH0334473B2 JPH0334473B2 JP59002082A JP208284A JPH0334473B2 JP H0334473 B2 JPH0334473 B2 JP H0334473B2 JP 59002082 A JP59002082 A JP 59002082A JP 208284 A JP208284 A JP 208284A JP H0334473 B2 JPH0334473 B2 JP H0334473B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sensitive recording
- methyl
- color
- recording material
- 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
Links
- 239000000463 material Substances 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009472 formulation Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- -1 P-hydroxybenzoic acid ester Chemical class 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- JJXVDRYFBGDXOU-UHFFFAOYSA-N dimethyl-4-hydroxyphthalate Natural products COC(=O)C1=CC=C(O)C=C1C(=O)OC JJXVDRYFBGDXOU-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002985 plastic film Substances 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
- LIZLYZVAYZQVPG-UHFFFAOYSA-N (3-bromo-2-fluorophenyl)methanol Chemical compound OCC1=CC=CC(Br)=C1F LIZLYZVAYZQVPG-UHFFFAOYSA-N 0.000 description 1
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 1
- TZMSYXZUNZXBOL-UHFFFAOYSA-N 10H-phenoxazine Chemical compound C1=CC=C2NC3=CC=CC=C3OC2=C1 TZMSYXZUNZXBOL-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- MWRVRCAFWBBXTL-UHFFFAOYSA-N 4-hydroxyphthalic acid Chemical compound OC(=O)C1=CC=C(O)C=C1C(O)=O MWRVRCAFWBBXTL-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- MOZDKDIOPSPTBH-UHFFFAOYSA-N Benzyl parahydroxybenzoate Chemical compound C1=CC(O)=CC=C1C(=O)OCC1=CC=CC=C1 MOZDKDIOPSPTBH-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Chemical class N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 125000003387 indolinyl group Chemical class N1(CCC2=CC=CC=C12)* 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003503 terephthalic acid derivatives Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000013053 water resistant agent Substances 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
- B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Description
本発明は感熱記録体に関するもので更に詳しく
は高速記録適性にすぐれかつ保存安定性を向上さ
せた感熱記録体に関する。
通常無色ないし淡色の発色性物質（以下ロイコ
化合物と云う。）および顕色剤とを含む感熱記録
紙はたとえば、特公昭45−14039号などによつて
すでに公知である。この記録紙は熱エネルギーを
記録層に与えてロイコ化合物、有機酸および結着
剤を軟化あるいは溶融し、両発色成分を接触させ
て発色反応させる原理に基づくものであり、近時
各種プリンター、フアクシミリ等の分野で使用さ
れている。該記録紙の記録特性は用途によつて異
なるが、たとえば記録速度を上げるためには、記
録装置の改良とともに記録紙自身の発色性を促進
する必要があるといえる。
発色性を促進する方法としては一般に低融点物
質を記録層中に含有させる方法と顕色剤の融点を
下げるという方法が考えられるが、本発明は後者
の方法により感熱記録体の発色性を促進する方法
である。従来感熱記録体の発色性を促進するため
の顕色剤の提案は種々なされているが、実用可能
なものとしてはＰ−ヒドロキシ安息香酸エステル
（特開昭56−144193号）および４−ヒドロキシフ
タル酸ジエステル（特開昭58−153692号）等が考
えられる。しかしながらこれらの物質はいずれも
得られた画像の退色性が著しく劣るという欠点を
有している。そこで退色性を改良するために酸化
防止剤等の各種薬品の添加も提案されているが満
足出来るものが得られていない。
そこで本発明者らは高速記録性にすぐれ、かつ
保存安定性にもすぐれた感熱記録体を得ることを
目的として鋭意研究を行なつた結果、本発明をな
すに至つた。
すなわち本発明はロイコ化合物と、このロイコ
化合物を加熱時発色させる顕色剤とを含む感熱記
録層を有する感熱記録体において、顕色剤として
下式で表わされる物質を少なくとも一種含有する
ことを特徴とする感熱記録体に関するものであ
る。
式
本発明において、上記した物質は感熱記録層の
全固形分中に１〜40重量％含有させることにより
目的を達成することが出来る。また上記した物質
と他の公知の顕色剤を併用する事も可能である。
次に本発明に用いられる物質について述べる。
(1) ロイコ化合物
無色ないし淡色であつて顕色剤と反応して発
色する物質でトリフエニルメタン系、トリフエ
ニルメタンフタリド系、フルオラン系、ロイコ
オーラミン系、ジフエニルメタン系、フエノチ
アジン系、フエノキサジン系、スピロピラン
系、インドリン系、インジゴ系などの各種誘導
体が挙げられ、特に限定されるものではないが
以下のものが例示できる。
クリスタルバイオレツトラクトン（青色）、
３−ジエチルアミノ−６−メチル−７−アニリ
ノフルオラン（黒色）、３−（Ｎ−エチル−Ｐ−
トルイデイノ）−６−メチル−７−アニリノフ
ルオラン（黒色）、３−ジエチルアミノ−６−
メチル−７−（オルト、パラ−ジメチルアニリ
ノ）フルオラン（黒色）、３−ピロリデイノ−
６−メチル−７−アニリノフルオラン（黒色）、
３−ピペリデイノ−６−メチル−７−アニリノ
フルオラン（黒色）、３−（Ｎ−シクロヘキシル
−Ｎ−メチルアミノ）−６−メチル−７−アニ
リノフルオラン（黒色）、３−ジエチルアミノ
−７−（オルト−クロロアニリノ）フルオラン
（黒色）、３−ジエチルアミノ−７−（メタ−ト
リフルオロメチルアニリノ）フルオラン（黒
色）、３−ジエチルアミノ−６−メチル−クロ
ロフルオラン（赤色）、３−ジエチルアミノ−
６−メチル−フルオラン（赤色）、３−シクロ
ヘキシルアミノ−６−クロロフルオラン（橙
色）、３−（Ｎ−イソアミル−Ｎ−エチルアミ
ノ）−６−メチル−７−アニリノフルオラン
（黒色）。
(2) 発色促進剤
本発明の感熱記録体の記録特性をさらに上げ
るためには従来知られているような発色促進
剤、たとえばステアリン酸アマイド等の脂肪酸
アマイド、テレフタル酸エステルなどが用いら
れる。
(3) 結着剤
主として水溶性結着剤を用いて微粒子状に分
散された発色剤を互いに隔離させて固着させる
ものであり、ポリビニルアルコール、メチルセ
ルロース、カルボキシメチルセルロース、ヒド
ロキシエチルセルロース、ポリアクリル酸、カ
ゼイン、ゼラチン、でんぷんおよびそれらの誘
導体などが挙げられる。
(4) その他の添加剤
本発明の感熱記録体には必要に応じて感熱層
中に他の添加物質たとえばクレー、炭酸カルシ
ウム、水酸化アルミニウム、タルク、酸化チタ
ン、酸化亜鉛等の無機または有機顔料、ワツク
ス類、保存安定のための酸化防止剤、紫外線吸
収剤ステイツク防止のための各種脂肪酸金属
塩、耐水性向上のための耐水化剤、フエノール
樹脂、界面活性剤等を添加することも可能であ
る。
(5) 基体
本発明は基体に前記した物質を含む感熱塗料
を塗布してつくられる。基体としては、一般に
は上質紙、中質紙、コート紙をはじめとする紙
が用いられるが、その他ガラス繊維シート、プ
ラスチツクシート、フイルムラミネート紙など
も基体として使用することが出来る。
本発明の感熱記録体は、高速記録性と保存安
定性をあわせて満足するため、きわめて有用で
ある。
以下に本発明の効果を実施例により更に詳細に
説明する。
実施例 １
(a) 感熱記録体の製造
下記の組成のＡ液およびＢ液を各々別々にペ
イントシエーカー（東洋精機製）で10時間分散
させた。
Ａ液：
３−（Ｎ−シクロヘキシル−Ｎ−メチル）アミ
ノ−６−メチル−７−アニリノフルオラン ５ｇ
水酸化アルミニウム 28ｇ
ステアリン酸亜鉛 ５ｇ
ポリビニルアルコール12％液 35ｇ
水 52ｇ
Ｂ液：
15ｇ
カオリン 20ｇ
ステアリン酸亜鉛 ３ｇ
ポリビニルアルコール12％液 35ｇ
水 52ｇ
次にＡ液125ｇ、Ｂ液125ｇとポリビニルアル
コール12％液50ｇ、水40ｇを加えて混合撹拌し
調整して塗液をつくり、次にこの塗液を50ｇ／
m2の上質紙の表面にマイヤバーを用いて乾燥後
の塗布量が８ｇ／m2になるよう塗布乾燥し感熱
記録体を得た。
実施例 ２
実施例１で用いたＡ液の配合のうち３−（Ｎ−
シクロヘキシル−Ｎ−メチル）アミノ−６−メチ
ル−７−アニリノフルオランの代りに３−（Ｎ−
イソアミル−Ｎ−エチル）アミノ−６−メチル−
７−アニリノフルオランを用いた以外は実施例１
と同様にして感熱記録体を得た。
実施例 ３、４
実施例１で用いたＢ液の配合のうち
の代りに
を用いた以外は実施例１と同様にして感熱記録体
を得、また
を用いた以外は実施例１と同様にして感熱記録体
を得、それぞれ実施例３、４の感熱記録体とし
た。
比較例 １、２
実施例１で用いたＢ液の配合のうち
のかわりにＰ−ヒドロキシ安息香酸ベンジルエス
テルを用いた以外は実施例１と同様にして感熱記
録体を得、また４−ヒドロキシフタル酸ジメチル
エステルを用いた以外は実施例１と同様にして感
熱記録体を得、それぞれ比較例１、２の感熱記録
体とした。
以上実施例および比較例、で得た感熱記録体を
記録面がベツク平滑度で500秒になるようテスト
スーパーキヤレンダーで表面処理した。
次に表面処理して得られた感熱記録体について
市販のＧフアクシミリ装置FACOM FAX
621C（富士通(株)製）で記録電力0.85W／dot、通電
時間0.45ｍsec、周期約５ｍsec／ｌの条件で印字
を行い、印字した時の画像濃度および地肌濃度を
マクベス濃度計RD−514を用いて測定した。
保存性は40℃、90％の条件に保持した恒温恒湿
室で48時間保存した後の濃度を示した。実施例お
よび比較例について表の結果を得た。
The present invention relates to a heat-sensitive recording material, and more particularly to a heat-sensitive recording material having excellent suitability for high-speed recording and improved storage stability. A thermosensitive recording paper containing a normally colorless to light-colored color-forming substance (hereinafter referred to as a leuco compound) and a color developer is already known, for example, from Japanese Patent Publication No. 14039/1983. This recording paper is based on the principle that thermal energy is applied to the recording layer to soften or melt the leuco compound, organic acid, and binder, and the two coloring components are brought into contact to cause a coloring reaction. It is used in fields such as Although the recording characteristics of the recording paper differ depending on the use, for example, in order to increase the recording speed, it is necessary to improve the recording apparatus and to promote the color development of the recording paper itself. Generally speaking, methods for promoting color development include a method of including a low melting point substance in the recording layer and a method of lowering the melting point of a color developer, but the present invention promotes color development of a thermosensitive recording material by the latter method. This is the way to do it. Various color developers have been proposed to promote the color development of heat-sensitive recording materials, but the ones that are practical include P-hydroxybenzoic acid ester (Japanese Patent Application Laid-open No. 144193/1983) and 4-hydroxyphthalate. Acid diesters (JP-A-58-153692) and the like can be considered. However, all of these materials have the disadvantage that the resulting images have significantly poor fading resistance. Therefore, the addition of various chemicals such as antioxidants has been proposed in order to improve the fading property, but nothing satisfactory has been obtained. Therefore, the present inventors conducted extensive research aimed at obtaining a heat-sensitive recording medium that has excellent high-speed recording properties and excellent storage stability, and as a result, the present invention was completed. That is, the present invention provides a heat-sensitive recording material having a heat-sensitive recording layer containing a leuco compound and a color developer that causes the leuco compound to develop color when heated, which is characterized by containing at least one substance represented by the following formula as the color developer. The present invention relates to a heat-sensitive recording medium. Formula In the present invention, the object can be achieved by containing the above-mentioned substances in an amount of 1 to 40% by weight in the total solid content of the heat-sensitive recording layer. It is also possible to use the above-mentioned substances in combination with other known color developers. Next, the substances used in the present invention will be described. (1) Leuco compounds Colorless or light-colored substances that develop color by reacting with color developers, including triphenylmethane, triphenylmethanephthalide, fluoran, leucoolamine, diphenylmethane, phenothiazine, and phenoxazine. , spiropyran derivatives, indoline derivatives, indigo derivatives, and the like. Examples include, but are not limited to, the following. Crystal violet lactone (blue),
3-diethylamino-6-methyl-7-anilinofluorane (black), 3-(N-ethyl-P-
toluideino)-6-methyl-7-anilinofluorane (black), 3-diethylamino-6-
Methyl-7-(ortho, para-dimethylanilino)fluoran (black), 3-pyrrolidino-
6-methyl-7-anilinofluorane (black),
3-piperidino-6-methyl-7-anilinofluorane (black), 3-(N-cyclohexyl-N-methylamino)-6-methyl-7-anilinofluorane (black), 3-diethylamino-7 -(ortho-chloroanilino)fluoran (black), 3-diethylamino-7-(meta-trifluoromethylanilino)fluoran (black), 3-diethylamino-6-methyl-chlorofluoran (red), 3-diethylamino-
6-Methyl-fluorane (red), 3-cyclohexylamino-6-chlorofluorane (orange), 3-(N-isoamyl-N-ethylamino)-6-methyl-7-anilinofluorane (black). (2) Color Development Accelerator In order to further improve the recording properties of the heat-sensitive recording medium of the present invention, conventionally known color development promoters such as fatty acid amides such as stearamide, terephthalic acid esters, and the like are used. (3) Binder A water-soluble binder is used to isolate and fix the coloring agent dispersed in fine particles from each other, such as polyvinyl alcohol, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, polyacrylic acid, and casein. , gelatin, starch and their derivatives. (4) Other additives The heat-sensitive recording material of the present invention may contain other additives in the heat-sensitive layer as necessary, such as inorganic or organic pigments such as clay, calcium carbonate, aluminum hydroxide, talc, titanium oxide, zinc oxide, etc. It is also possible to add waxes, antioxidants for storage stability, various fatty acid metal salts to prevent ultraviolet absorber staining, water resistant agents to improve water resistance, phenolic resins, surfactants, etc. be. (5) Substrate The present invention is produced by coating a substrate with a heat-sensitive paint containing the above-mentioned substances. Papers such as wood-free paper, medium-quality paper, and coated paper are generally used as the substrate, but other materials such as glass fiber sheets, plastic sheets, and film laminated papers can also be used as the substrate. The heat-sensitive recording medium of the present invention is extremely useful because it satisfies both high-speed recording performance and storage stability. The effects of the present invention will be explained in more detail below using Examples. Example 1 (a) Production of heat-sensitive recording material Liquids A and B having the following compositions were separately dispersed in a paint shaker (manufactured by Toyo Seiki Co., Ltd.) for 10 hours. Solution A: 3-(N-cyclohexyl-N-methyl)amino-6-methyl-7-anilinofluorane 5g Aluminum hydroxide 28g Zinc stearate 5g Polyvinyl alcohol 12% solution 35g Water 52g Solution B: 15 g Kaolin 20 g Zinc stearate 3 g Polyvinyl alcohol 12% solution 35 g Water 52 g Next, add 125 g of Part A, 125 g of Part B, 50 g of 12% polyvinyl alcohol solution, and 40 g of water, mix and stir, and adjust to make a coating solution. 50g/of this coating liquid
A heat-sensitive recording material was obtained by applying and drying the coating onto the surface of a m 2 high-quality paper using a Meyer bar so that the coating amount after drying was 8 g/m 2 . Example 2 Among the formulations of liquid A used in Example 1, 3-(N-
3-(N-methyl)amino-6-methyl-7-anilinofluorane instead of cyclohexyl-N-methyl)amino-6-methyl-7-anilinofluorane
isoamyl-N-ethyl)amino-6-methyl-
Example 1 except that 7-anilinofluorane was used.
A heat-sensitive recording material was obtained in the same manner as above. Examples 3 and 4 Among the formulations of liquid B used in Example 1 instead of A thermosensitive recording material was obtained in the same manner as in Example 1 except that Thermal recording bodies were obtained in the same manner as in Example 1, except that the thermosensitive recording bodies of Examples 3 and 4 were used, respectively. Comparative Examples 1 and 2 Among the formulations of liquid B used in Example 1 A thermosensitive recording material was obtained in the same manner as in Example 1 except that P-hydroxybenzoic acid benzyl ester was used instead, and a thermosensitive recording material was obtained in the same manner as in Example 1 except that 4-hydroxyphthalic acid dimethyl ester was used. The obtained bodies were used as heat-sensitive recording bodies of Comparative Examples 1 and 2, respectively. The heat-sensitive recording bodies obtained in the above Examples and Comparative Examples were surface-treated with a test super calender so that the recording surface had a Bekk smoothness of 500 seconds. Next, regarding the heat-sensitive recording material obtained by surface treatment, the commercially available G facsimile machine FACOM FAX
621C (manufactured by Fujitsu Ltd.) under the conditions of a recording power of 0.85 W/dot, a current conduction time of 0.45 msec, and a cycle of approximately 5 msec/l. It was measured using Storage stability is the concentration after storage for 48 hours in a constant temperature and humidity room maintained at 40°C and 90%. Table results were obtained for Examples and Comparative Examples.
【表】【table】
【表】
以上本発明の感熱記録体がすぐれた特徴を持つ
ている事が実証された。[Table] It has been demonstrated that the heat-sensitive recording material of the present invention has excellent characteristics.
Claims (1)
色性物質を加熱時発色させる顕色剤とを含む感熱
記録層を有する感熱記録体において、顕色剤とし
て下式で表わされる物質を少なくとも一種含有す
ることを特徴とする感熱記録体。 [Scope of Claims] 1. In a heat-sensitive recording material having a heat-sensitive recording layer containing a normally colorless or light-colored color-forming substance and a color developer that causes the color-forming substance to develop color when heated, the color developer is represented by the following formula. 1. A heat-sensitive recording material characterized by containing at least one kind of substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59002082A JPS60145885A (en) | 1984-01-11 | 1984-01-11 | Thermal recording body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59002082A JPS60145885A (en) | 1984-01-11 | 1984-01-11 | Thermal recording body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60145885A JPS60145885A (en) | 1985-08-01 |
| JPH0334473B2 true JPH0334473B2 (en) | 1991-05-22 |
Family
ID=11519423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59002082A Granted JPS60145885A (en) | 1984-01-11 | 1984-01-11 | Thermal recording body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60145885A (en) |
-
1984
- 1984-01-11 JP JP59002082A patent/JPS60145885A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60145885A (en) | 1985-08-01 |
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