JPH03181572A - Heat-sensitive recording ink - Google Patents
Heat-sensitive recording inkInfo
- Publication number
- JPH03181572A JPH03181572A JP1320247A JP32024789A JPH03181572A JP H03181572 A JPH03181572 A JP H03181572A JP 1320247 A JP1320247 A JP 1320247A JP 32024789 A JP32024789 A JP 32024789A JP H03181572 A JPH03181572 A JP H03181572A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- heat
- recording ink
- sensitive recording
- ink
- 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
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000000981 basic dye Substances 0.000 claims abstract description 9
- 239000012046 mixed solvent Substances 0.000 claims abstract description 8
- SDDLEVPIDBLVHC-UHFFFAOYSA-N Bisphenol Z Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCCC1 SDDLEVPIDBLVHC-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000975 dye Substances 0.000 claims description 10
- 230000035945 sensitivity Effects 0.000 abstract description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000007646 gravure printing Methods 0.000 abstract description 5
- 239000000976 ink Substances 0.000 description 24
- 235000019441 ethanol Nutrition 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 3
- 150000003951 lactams Chemical class 0.000 description 3
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- WNZQDUSMALZDQF-UHFFFAOYSA-N 2-benzofuran-1(3H)-one Chemical compound C1=CC=C2C(=O)OCC2=C1 WNZQDUSMALZDQF-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 2
- -1 propatool Chemical compound 0.000 description 2
- AEYOJVYWEWMNGJ-UHFFFAOYSA-N 3-(methylamino)-3h-2-benzofuran-1-one Chemical compound C1=CC=C2C(NC)OC(=O)C2=C1 AEYOJVYWEWMNGJ-UHFFFAOYSA-N 0.000 description 1
- MQJTWPAGXWPEKU-UHFFFAOYSA-N 3-[4-(dimethylamino)phenyl]-3-(1,2-dimethylindol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C3=CC=CC=C3N(C)C=2C)C2=CC=CC=C2C(=O)O1 MQJTWPAGXWPEKU-UHFFFAOYSA-N 0.000 description 1
- ZKUWHPNJONEJEE-UHFFFAOYSA-N 3-[4-(dimethylamino)phenyl]-3-(2-methyl-1h-indol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C3=CC=CC=C3NC=2C)C2=CC=CC=C2C(=O)O1 ZKUWHPNJONEJEE-UHFFFAOYSA-N 0.000 description 1
- KFMASHHCLJTUDI-UHFFFAOYSA-N 4-[2-[2,2-bis[4-(dimethylamino)phenyl]-1-phenylethoxy]-1-[4-(dimethylamino)phenyl]-2-phenylethyl]-n,n-dimethylaniline Chemical compound C1=CC(N(C)C)=CC=C1C(C=1C=CC(=CC=1)N(C)C)C(C=1C=CC=CC=1)OC(C=1C=CC=CC=1)C(C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 KFMASHHCLJTUDI-UHFFFAOYSA-N 0.000 description 1
- DPTAYXRMLJNOCN-UHFFFAOYSA-N 5-(dimethylamino)-3h-2-benzofuran-1-one Chemical compound CN(C)C1=CC=C2C(=O)OCC2=C1 DPTAYXRMLJNOCN-UHFFFAOYSA-N 0.000 description 1
- MUWBLPSPEGTPEH-UHFFFAOYSA-N 6-(dimethylamino)-3,3-bis(9-ethylcarbazol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC=C2C3=CC(C4(C5=CC=C(C=C5C(=O)O4)N(C)C)C=4C=C5C6=CC=CC=C6N(C5=CC=4)CC)=CC=C3N(CC)C2=C1 MUWBLPSPEGTPEH-UHFFFAOYSA-N 0.000 description 1
- CRKAWLFCMDKQIT-UHFFFAOYSA-N 6-(dimethylamino)-3h-2-benzofuran-1-one Chemical compound CN(C)C1=CC=C2COC(=O)C2=C1 CRKAWLFCMDKQIT-UHFFFAOYSA-N 0.000 description 1
- NAPFLTSBKHTBHY-UHFFFAOYSA-N C(CCC)C1=CC=C(C=C1)NF Chemical compound C(CCC)C1=CC=C(C=C1)NF NAPFLTSBKHTBHY-UHFFFAOYSA-N 0.000 description 1
- ZKURGBYDCVNWKH-UHFFFAOYSA-N [3,7-bis(dimethylamino)phenothiazin-10-yl]-phenylmethanone Chemical compound C12=CC=C(N(C)C)C=C2SC2=CC(N(C)C)=CC=C2N1C(=O)C1=CC=CC=C1 ZKURGBYDCVNWKH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 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
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 239000001761 ethyl methyl cellulose Substances 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000001016 thiazine dye Substances 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は感熱記録用インキに関し、特にカブリが無く、
しかも記録感度及び不透明性に優れた感熱記録用インキ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a heat-sensitive recording ink, which is particularly fog-free and
Moreover, the present invention relates to a heat-sensitive recording ink having excellent recording sensitivity and opacity.
「従来の技術」
従来感熱ヘッドからの熱エネルギーを利用して発色せし
める感熱記録体はよく知られている。"Prior Art" Conventionally, thermal recording materials that develop color using thermal energy from a thermal head are well known.
かかる感熱記録体は比較的安価であり、また記録機器が
コンパクトでかつその保守も比較的容易であるためファ
クシミリや各種計算機等の記録媒体としてのみならず感
熱ラベル等巾広い分野において使用されている。Such heat-sensitive recording media are relatively inexpensive, the recording equipment is compact, and maintenance is relatively easy, so they are used not only as recording media for facsimiles and various calculators, but also in a wide range of fields such as heat-sensitive labels. .
また最近ではその特徴を活かし、定期券、回数券、その
他種々のプリペイドカード等に利用され、その用途の拡
大と共にグラビア印刷によるパターン印刷可能な感熱記
録用インキの開発が望まれている。Moreover, recently, taking advantage of its characteristics, it has been used for commuter passes, coupon tickets, and various other prepaid cards, and as its uses expand, there is a desire to develop a thermal recording ink that can print patterns by gravure printing.
かかる感熱記録用インキには、インキ自体に不要な発色
（カブリ）の無いことが要求され、例えば、特開昭５６
−３２５６３号、特開平１−９６２７１号には、塩基性
染料（ロイコ染料）および顕色剤に対し不活性な溶剤と
してナフテン系炭化水素や芳香族炭化水素の使用が提案
されている。Such heat-sensitive recording inks are required to have no unnecessary color development (fogging) in the ink itself, and for example,
32563 and JP-A-1-96271 propose the use of naphthenic hydrocarbons and aromatic hydrocarbons as solvents that are inert to basic dyes (leuco dyes) and color developers.
しかしながら、これらの有機溶剤もロイコ染料および顕
色剤の双方に対して十分に不活性ではないためインキ自
体にカブリを生じ、結果としてグラビア印刷した印刷面
にもカブリを来す。However, since these organic solvents are not sufficiently inert to both the leuco dye and the color developer, fogging occurs on the ink itself, and as a result, the printed surface of the gravure print also becomes foggy.
また、顕色剤に対する溶解性が良好な有毅溶剤を用いた
感熱記録用インキには、紙に印刷した際に、顕色剤が溶
剤と共に紙層中に浸透してしまい、記録感度及び不透明
性が低下するという欠点があった。In addition, when thermal recording ink uses a strong solvent that has good solubility in the developer, when printed on paper, the developer permeates into the paper layer along with the solvent, resulting in poor recording sensitivity and opacity. The disadvantage was that the performance decreased.
「発明が解決しようとする課題」
上記の如き現状に鑑み本発明者らは、カブリが無く、し
かも記録感度や不透明性にも優れた感熱記録用インキを
得るべく、特に顕色剤及び溶剤について幅広い検討を重
ねた。``Problems to be Solved by the Invention'' In view of the above-mentioned current situation, the present inventors aimed to obtain a heat-sensitive recording ink that is fog-free and has excellent recording sensitivity and opacity, especially regarding color developers and solvents. A wide range of studies were conducted.
その結果、特定の顕色剤と特定の比率からなるアルコー
ル／水混合溶剤を用いることで、かかる目的が達成され
ることを見出し、本発明を完成するに至った。As a result, the inventors discovered that the above object could be achieved by using a specific color developer and an alcohol/water mixed solvent having a specific ratio, and completed the present invention.
「課題を解決するための手段」
本発明は、無色又は淡色の塩基性染料、及び該染料を熱
時発色せしめる顕色剤を溶剤中に溶解又は分散せしめた
感熱記録用インキにおいて、顕色剤として１．１−ビス
（４−ヒドロキシフェニル）シクロヘキサンを用い、か
つ溶剤としてアルコール１００重量部に対して水２０〜
１００重量部を含む混合溶剤を用いることを特徴とする
感熱記録用インキである。"Means for Solving the Problems" The present invention provides a heat-sensitive recording ink in which a colorless or light-colored basic dye and a color developer that causes the dye to develop color when heated are dissolved or dispersed in a solvent. 1.1-bis(4-hydroxyphenyl)cyclohexane was used as the solvent, and 20 to 20 parts of water was used per 100 parts by weight of alcohol as the solvent.
This is a heat-sensitive recording ink characterized by using a mixed solvent containing 100 parts by weight.
「作用」
本発明は上記の如く、顕色剤として１，１−ビス（４−
ヒドロキシフェニル）シクロヘキサン、？８ 剤として
アルコール１００重量部に対して水を２０〜１００重量
部、好ましくは２５〜８０重量部含む混合溶剤を使用す
るところに重大な特徴を有するものである。"Function" As described above, the present invention uses 1,1-bis(4-
hydroxyphenyl) cyclohexane,? 8. An important feature is that a mixed solvent containing 20 to 100 parts by weight, preferably 25 to 80 parts by weight of water per 100 parts by weight of alcohol is used as the agent.
本発明においては、顕色剤として特定の化合物を選択的
に使用することでカブリを防止し、また溶剤として上記
特定の割合で混合されたくアルコール／水）混合溶剤を
用いることにより、顕色剤の溶剤に対する溶解性を適度
な領域に抑制し、記録感度及び印刷部の不透明性に優れ
た感熱記録用インキを得ているものである。In the present invention, fogging is prevented by selectively using a specific compound as a color developer, and by using a mixed solvent (alcohol/water) mixed in the above specific ratio as a solvent, the color developer The solubility of the heat-sensitive recording ink in the solvent is suppressed to an appropriate range, and the thermal recording ink is excellent in recording sensitivity and opacity of the printed area.
因に、アルコール１００重量部に対して水の添加量が２
０重量部以下では記録感度及び不透明性の改善効果が殆
ど認められず、また、水を１００重量部以上添加すると
インキの流動性が悪くなり印刷ムラを生じてしまう。Incidentally, the amount of water added to 100 parts by weight of alcohol is 2
If water is added below 0 parts by weight, little improvement in recording sensitivity and opacity will be observed, and if water is added in excess of 100 parts by weight, the fluidity of the ink will deteriorate, resulting in uneven printing.
本発明において使用されるアルコールの種類としては、
特に限定するものではないが、メタノール、エタノール
、プロパツール、ブタノール等カ好ましい。The types of alcohol used in the present invention include:
Although not particularly limited, methanol, ethanol, propatool, butanol and the like are preferred.
無色又は淡色の塩基性染料としては各種公知のものが使
用でき、具体的には例えば下記が例示できる。Various known colorless or light-colored basic dyes can be used, and specific examples include the following.
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、３．３−ビス（ｐ−ジメチルアミ
ノフェニル）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−（ｐ−ジメチルアミノフェニル）−３
−（２−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（１゜２−
ジメチルインドール−３−イル）−６−’；メチルアミ
ノフタリド、３，３−ビス（９−エチルカルバゾルルー
３〜イル）−６−ジメチルアミノフタリド、３．３−ビ
ス（２−フェニルインドール−３−イル）−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−メチルビロール−３−イル）−６−シメチル
アごノフタリド等のトリアリルメタン系染料、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７ Ｑン、Ｎ−２，４
，５−１−リクロロフェニルロイコオーラごン等のジフ
ェニルメタン系染料、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
ジン系染料、３−メチル−スピロ−ジナフトピラン、３
−エチル−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−ベンジル−スピロ−ジナフト
ピラン、３−メチル−ナフト （６′−メトキシベンゾ
〉スピロピラン、３−プロピル−スピロジベンゾピラン
等のスピロ系染料、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（０−クロロアニリノ）ラクタム等のラクタム系染料
、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−メトキシフルオラン、３−ジエチ
ルアミノ−７−メトキシフルオラン、３−ジエチルアミ
ノ−７−クロロフルオラン、３−ジエチルアミノ−６−
メチル−７−クロロフルオラン、３−ジエチルアミノ−
６，７−シメチルフルオラン、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アセチル−Ｎ−メチルアミノフルオラン
、３−ジニチルアξノー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−ジエチルアミノ−７−Ｎ−メチル−Ｎ−ベン
ジル７ミノフルオラン、３−ジエチルアミノ−ツーＮ−
クロロエチル−Ｎ−メチルアミノフルオラン、３−ジエ
チルアミノ−７−Ｎ−ジエチルアミノフルオラン、３−
（Ｎ−エチルｐ−１−ルイジノ）−６−メチル−７−フ
ェニ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−（ｐ−トルイジノ）フルオ
ラン、３−ジエチルアミノ−６−メチルーツツエニルア
ミノフルオラン、３−ジブチルアミノ−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−７
−（２−カルボメトキシフェニルアミノ）フルオラン、
３−（Ｎ−エチル−Ｎ−イソアごルアミノ）−６−メチ
ル−７フエニルアミノフルオラン、３−（Ｎ−シクロへ
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−ピロリジノ−６メチルー７−
フエ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、３−ジエ
チルアミノ７−（０−クロロフェニルアミノ）フルオラ
ン、３−ジブチルアミノ−７−（０−クロロフェニルア
ミノ〉フルオラン、３−ピロリジノ−６−メチル−７−
ｐ−ブチルフェニルアミノフルオラン等のフルオラン系
染料等。勿論、これらの塩基性染料は必要に応じて２種
類以上を併用することもできる。3.3-bis(p-dimethylaminophenyl)6-dimethylaminophthalide, 3.3-bis(p-dimethylaminophenyl)phthalide, 3-(p-dimethylaminophenyl)-3-(1,2- Dimethylindol-3-yl)phthalide, 3-(p-dimethylaminophenyl)-3
-(2-methylindol-3-yl)phthalide, 3.
3-bis(1,2-dimethylindol-3-yl)=
5-dimethylaminophthalide, 3,3-bis(1゜2-
dimethylindol-3-yl)-6-'; methylaminophthalide, 3,3-bis(9-ethylcarbazol-3-yl)-6-dimethylaminophthalide, 3,3-bis(2-phenyl) indol-3-yl)-6-dimethylaminophthalide, 3-p-dimethylaminophenyl-
Triallylmethane dyes such as 3-(1-methylpyrrol-3-yl)-6-dimethylagonophthalide, 4,4'
Bis-dimethylaminobenzhydrylbenzyl ether, N-halophenyl-leuko7 Qn, N-2,4
, diphenylmethane dyes such as 5-1-lichlorophenylleucooragon, thiazine dyes such as benzoylleucomethylene blue and p-nitrobenzoylleucomethylene blue, 3-methyl-spiro-dinaphthopyran, 3
Spiro dyes such as -ethyl-spiro-dinaphthopyran, 3-phenyl-spiro-dinaphthopyran, 3-benzyl-spiro-dinaphthopyran, 3-methyl-naphtho (6'-methoxybenzo) spiropyran, 3-propyl-spirodibenzopyran , rhodamine B-anilinolactam,
Lactam dyes such as rhodamine<p-nitroanilino)lactam, rhodamine(0-chloroanilino)lactam, 3-dimethylamino-7-methoxyfluorane, 3-
Diethylamino-6-methoxyfluorane, 3-diethylamino-7-methoxyfluorane, 3-diethylamino-7-chlorofluorane, 3-diethylamino-6-
Methyl-7-chlorofluorane, 3-diethylamino-
6,7-dimethylfluorane, 3-(N-ethyl-p
-Toluidino)-7-methylfluorane, 3-diethylamino-7-N-acetyl-N-methylaminofluorane, 3-dinithylamino-7-N-methylaminofluorane, 3-diethylamino-7-dibenzylaminofluorane Orane, 3-diethylamino-7-N-methyl-N-benzyl 7minofluorane, 3-diethylamino-2N-
Chloroethyl-N-methylaminofluorane, 3-diethylamino-7-N-diethylaminofluorane, 3-
(N-Ethyl p-1-luidino)-6-methyl-7-phenylaminofluorane, 3-(N-ethyl-p-toluidino)-6-methyl-7-(p-toluidino)fluorane, 3-diethylamino -6-methyl-tzenylaminofluorane, 3-dibutylamino-6-methyl-7
-phenylaminofluorane, 3-diethylamino-7
-(2-carbomethoxyphenylamino)fluorane,
3-(N-ethyl-N-isoagorulamino)-6-methyl-7phenylaminofluorane, 3-(N-cyclohexyl-N-methylamino)-6-methyl-7-phenylaminofluorane , 3-pyrrolidino-6methyl-7-
Phenylaminofluorane, 3-piperidino-6-methyl-7-phenylaminofluorane, 3-diethylamino-6-methyl-7-xylidinofluorane, 3-diethylamino 7-(0-chlorophenylamino)fluoran, 3 -dibutylamino-7-(0-chlorophenylamino>fluorane, 3-pyrrolidino-6-methyl-7-
Fluoran dyes such as p-butylphenylaminofluorane, etc. Of course, two or more of these basic dyes can be used in combination if necessary.
上記各種の塩基性染料のうちでも、特にフルオラン系染
料が好ましい。Among the various basic dyes mentioned above, fluoran dyes are particularly preferred.
本発明の感熱記録用インキは、上記の如き塩基性染料、
特定の顕色剤、混合溶剤の他に、必要に応して水及びア
ルコールの混合溶剤に可溶なエチルセルロース、メチル
セルロース及ヒフチラール樹脂等の接着剤、さらには炭
酸マグネシウム、酸性白土、酸化ケイ素等の無機顔料、
融点が６０〜１５０℃の範囲にある熱溶融性有機化合物
、界面活性剤等を任意に添加してボールミル、サンドミ
ル等の分散機により混錬して調整される。The thermal recording ink of the present invention comprises a basic dye as described above,
In addition to specific color developers and mixed solvents, adhesives such as ethyl cellulose, methyl cellulose and hiftyral resins that are soluble in mixed solvents of water and alcohol, as well as magnesium carbonate, acid clay, silicon oxide, etc. inorganic pigment,
It is prepared by optionally adding a heat-fusible organic compound having a melting point in the range of 60 to 150°C, a surfactant, etc., and kneading with a dispersing machine such as a ball mill or a sand mill.
感熱記録用インキは、紙、フィルム、合成紙、アルミ箔
等に印刷又は塗布されて感熱記録体とされるが、インキ
層の形成方法については、グラビア印刷等の印刷方式、
又はロールコータ−、リバースコーター ドクターコー
ター等の塗工機による塗工方式から適宜選択することが
可能である。Thermosensitive recording ink is printed or coated on paper, film, synthetic paper, aluminum foil, etc. to make a thermosensitive recording medium, but the method for forming the ink layer may include printing methods such as gravure printing,
Alternatively, it is possible to appropriately select a coating method using a coating machine such as a roll coater, a reverse coater, a doctor coater, or the like.
「実施例」
以下に実施例を示し、本発明をより具体的に説明するが
、勿論これらに限定されるものではない。"Example" The present invention will be described in more detail with reference to Examples below, but the present invention is of course not limited to these.
なお、特に断らない限り例中の部および％はそれぞれ重
量部および重量％を示す。In addition, unless otherwise specified, parts and % in the examples indicate parts by weight and % by weight, respectively.
実施例１
イソプロピルアルコール １５０部水
５０部１
．１−ビス（４−ヒドロキシフェニル）シクロヘキサン
３０部３− （Ｎ−エ
チル−ｐ−）ルイジノ）−６−メチル−７−フェニルア
ミノフルオラン １０部炭酸カルシウム
１０部エチルセルロース
１０部この組成物をサンドミルで３時間混練し、感熱
記録用インキを得た。Example 1 Isopropyl alcohol 150 parts water
50 parts 1
．． 1-bis(4-hydroxyphenyl)cyclohexane 30 parts 3-(N-ethyl-p-)luidino)-6-methyl-7-phenylaminofluorane 10 parts Calcium carbonate
10 parts ethylcellulose
10 parts of this composition was kneaded in a sand mill for 3 hours to obtain a heat-sensitive recording ink.
実施例２
エチルアルコール １５０部水
５０部１１
−ビス（４−ヒドロキシフェニル）シクロヘキサン
３０部３−ジブチルアミノ
−６−メチル−７−フェニルアミノフルオラン
１０部水酸化アルミニウム
１０部ブチラール樹脂 １０部
この組成物をサンドミルで３時間混練し、感熱記録用イ
ンキを得た。Example 2 Ethyl alcohol 150 parts water
50 parts 11
-bis(4-hydroxyphenyl)cyclohexane
30 parts 3-dibutylamino-6-methyl-7-phenylaminofluorane
10 parts aluminum hydroxide
10 parts Butyral resin 10 parts This composition was kneaded in a sand mill for 3 hours to obtain a heat-sensitive recording ink.
比較例１
実施例１において１．１−ビス（４−ヒドロキシフェニ
ル）シクロヘキサンの代わりにビスフェノールＡを用い
た以外は実施例１と同様にして感熱記録用インキを得た
。Comparative Example 1 A thermal recording ink was obtained in the same manner as in Example 1 except that bisphenol A was used instead of 1.1-bis(4-hydroxyphenyl)cyclohexane.
比較例２
実施例２において水を除いた以外は実施例２と同様にし
て感熱記録用インキを得た。Comparative Example 2 A thermosensitive recording ink was obtained in the same manner as in Example 2 except that water was removed.
比較例３
実施例２においてエチルアルコール１５０部を８０部、
水５０部を１２０部添加した以外は実施例２と同様にし
て感熱記録用インキを得た。Comparative Example 3 In Example 2, 150 parts of ethyl alcohol was replaced with 80 parts,
A thermal recording ink was obtained in the same manner as in Example 2 except that 120 parts of 50 parts of water was added.
比較例４
実施例２においてエチルアルコール１５０部を１８０部
、水５０部を２０部添加した以外は実施例２と同様にし
て感熱記録用インキを得た。Comparative Example 4 A thermal recording ink was obtained in the same manner as in Example 2, except that 180 parts of 150 parts of ethyl alcohol and 20 parts of 50 parts of water were added.
かくして得られた６種類の感熱記録用インキをグラビア
印刷方式で４６ｇ／ｒｄの上質紙上に乾燥塗布量が３
ｇ ／ ｒｄとなるようにパターン印刷し、感熱記録体
を得た。The six types of heat-sensitive recording inks thus obtained were printed on 46 g/rd high-quality paper using a gravure printing method with a dry coating amount of 3.
A pattern was printed to give a g/rd, and a heat-sensitive recording material was obtained.
得られた感熱記録体の地肌カブリ、発色性、及び印刷適
性を以下の方法で評価し、その結果を第１表に示した。The background fog, color development, and printability of the obtained heat-sensitive recording material were evaluated by the following methods, and the results are shown in Table 1.
ｆｌ＋ 地肌カブリ
マクヘス反射濃度計（ＲＤ−９１４型、マクベス社製）
にて濃度を測定した。fl+ Skin fog Machess reflection densitometer (model RD-914, manufactured by Macbeth)
The concentration was measured at
（２）記録感度
６ ｈ）／ｍのサーマルヘッド（京セラ社製、発熱体
抵抗５５７Ω／Ｆ７））を用い、ヘッド入力０．２６Ｗ
／Ｆフトで記録エネルギー１．０゜１、５ ｍ Ｊ ／
Ｆ７）の各条件で記録し、その記録濃度をマクベス反
射濃度計（ＲＤ−９１４型、マクベス社製）にて測定し
た。(2) Using a thermal head (manufactured by Kyocera, heating element resistance 557 Ω/F7) with a recording sensitivity of 6 h)/m, the head input was 0.26 W.
/F-foot recording energy 1.0゜1.5 mJ /
F7), and the recorded density was measured using a Macbeth reflection densitometer (model RD-914, manufactured by Macbeth).
（３）不透明性
ＪＩＳＰ８１３８の方法に準じて感熱記録体の不透明度
を測定した。(3) Opacity The opacity of the thermosensitive recording material was measured according to the method of JISP8138.
（４） 印刷ムラ
上記グラビア印刷方式で得られた感熱記録体の印刷ムラ
を目視判定した。(4) Printing unevenness The printing unevenness of the heat-sensitive recording material obtained by the above-mentioned gravure printing method was visually determined.
○：印刷ムラ無し
×：多くの印刷ムラ有り
第
１表
「効果」
第１表の結果から明らかな様に、本発明の感熱記録用イ
ンキは地肌カブリが極めて少なく、しかも記録感度及び
不透明性にも優れたものであった。○: No printing unevenness ×: Many printing unevenness Table 1 "Effects" As is clear from the results in Table 1, the thermal recording ink of the present invention has extremely little background fog, and has excellent recording sensitivity and opacity. was also excellent.
Claims (1)
める顕色剤を溶剤中に溶解又は分散せしめた感熱記録用
インキにおいて、顕色剤として１、１−ビス（４−ヒド
ロキシフェニル）シクロヘキサンを用い、かつ溶剤とし
てアルコール１００重量部に対して水２０〜１００重量
部を含む混合溶剤を用いることを特徴とする感熱記録用
インキ。1,1-bis(4-hydroxyphenyl)cyclohexane as the color developer in a heat-sensitive recording ink in which a colorless or light-colored basic dye and a color developer that causes the dye to develop color when heated are dissolved or dispersed in a solvent. and a mixed solvent containing 20 to 100 parts by weight of water to 100 parts by weight of alcohol as a solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320247A JPH03181572A (en) | 1989-12-08 | 1989-12-08 | Heat-sensitive recording ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320247A JPH03181572A (en) | 1989-12-08 | 1989-12-08 | Heat-sensitive recording ink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03181572A true JPH03181572A (en) | 1991-08-07 |
Family
ID=18119368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1320247A Pending JPH03181572A (en) | 1989-12-08 | 1989-12-08 | Heat-sensitive recording ink |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03181572A (en) |
-
1989
- 1989-12-08 JP JP1320247A patent/JPH03181572A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100430239C (en) | thermal recorder | |
| JPH0157679B2 (en) | ||
| JP3063075B2 (en) | Thermal recording medium | |
| JPH03181572A (en) | Heat-sensitive recording ink | |
| JPH03128285A (en) | Thermal recording sheet | |
| JP2001205938A (en) | Anti-counterfeit heat discoloration material | |
| JP3414928B2 (en) | Thermal recording material for infrared laser | |
| JP3852302B2 (en) | Laser recording type thermal recording medium | |
| JP2910031B2 (en) | Thermal recording medium | |
| JP2793861B2 (en) | Thermal recording ink | |
| JPS63132087A (en) | heat sensitive recording sheet | |
| JP2794244B2 (en) | Recording material | |
| JP2617505B2 (en) | Multicolor thermal recording medium | |
| JP4148853B2 (en) | Laser recording type thermal recording medium | |
| JP3029014B2 (en) | Thermal recording sheet | |
| JPS58173695A (en) | Heat sensitive recording sheet | |
| JP4238435B2 (en) | Fixing method of thermal fixing type thermal recording medium | |
| JP2975334B2 (en) | Pressure-sensitive and heat-sensitive multiplex copying paper and method for producing the same | |
| JP2967712B2 (en) | Thermal recording medium | |
| JP3747946B2 (en) | Thermal recording material | |
| JP2971908B2 (en) | Thermal recording medium | |
| JPH0632048A (en) | Pressure sensitive recording paper | |
| JPH01105779A (en) | heat sensitive recording material | |
| JPH0995061A (en) | Two-color thermal recording medium | |
| JPH029684A (en) | Thermal recording sheet |