JPS6157387A - Thermal recording material - Google Patents
Thermal recording materialInfo
- Publication number
- JPS6157387A JPS6157387A JP59178507A JP17850784A JPS6157387A JP S6157387 A JPS6157387 A JP S6157387A JP 59178507 A JP59178507 A JP 59178507A JP 17850784 A JP17850784 A JP 17850784A JP S6157387 A JPS6157387 A JP S6157387A
- Authority
- JP
- Japan
- Prior art keywords
- color
- recording material
- heat
- sensitive recording
- fluoran
- 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.)
- Granted
Links
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)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は感熱記録体に関するもので更に詳しくは高速記
録適性と保存安定性にすぐれかつ良好な黒色画像を得る
ことの出来る感熱記録体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-sensitive recording material, and more particularly to a heat-sensitive recording material that has excellent high-speed recording suitability and storage stability, and is capable of obtaining a good black image.
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。）および顕色惰すとを含む感熱記録紙はたとえば
、特公昭４５−１４０３９号などによってすでに公知で
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、ファクシミリ等の分野
で使用されている。該記録紙の記録特性は用途によって
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
あシ、近年この方向の感熱紙の開発が求められている。A thermosensitive recording paper containing a normally colorless to light-colored color-forming substance (hereinafter referred to as a leuco compound) and a color-developing substance is already known, for example, from Japanese Patent Publication No. 14039/1983. This recording paper applies thermal energy to the recording layer to soften or melt the leuco compound, organic acid, and binder.
It is based on the principle of bringing both coloring components into contact to cause a coloring reaction, and has recently been used in various fields such as printers and facsimile machines. The recording characteristics of the recording paper differ depending on the use, but for example, in order to increase the recording speed, it is necessary to improve the recording device and promote the color development of the recording paper itself, and in recent years there has been a demand for the development of thermal paper in this direction. It is being
従来よシ顕色剤としてはビスフェノールＡが一般的に使
用されてきたがビスフェノールＡは融点が１５７℃と高
く高速記録適性がなく、高速記録適性を上げるため各種
の増感剤を添加する事も提案されているもののいまだ十
分効果があるものはない。Conventionally, bisphenol A has been commonly used as a color developer, but bisphenol A has a high melting point of 157°C and is not suitable for high-speed recording, so various sensitizers are sometimes added to improve suitability for high-speed recording. Although many proposals have been made, none are yet sufficiently effective.
また高速記録適性を上げるためより融点の低い顕色剤の
提案も多数なされておシ、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５６−１４４１９
３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。In addition, many proposals have been made for color developers with lower melting points to improve suitability for high-speed recording, and P-
Hydroxybenzoic acid ester (JP-A-56-14419
No. 3) and 4-hydroxyphthalic acid diester (JP-A-58-153692). 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.
以上の理由から、本発明者は先に顕色剤として４，４′
−ジヒドロキシ−３，３′−ジイソプロピルジフェニル
−２，２−プロパンを提案した（特願昭５９−１３０１
３５）。For the above reasons, the present inventors first used 4,4' as a color developer.
-dihydroxy-3,3'-diisopropyldiphenyl-2,2-propane (Patent application 1301/1989)
35).
本顕色剤を用いたも、のは発色性・保存性ともＰ−ヒド
ロキシ安息香酸エステルや４−ヒドロキシフタル酸ジエ
ステル等に比較し、格段に優れているものの、得られる
画像の色相が赤味を帯びて良好な黒色画像を得ることが
出来ず、また指紋付着部が退色しやすいという欠点があ
った。Even when this color developer is used, it has much better color development and storage stability than P-hydroxybenzoic acid ester and 4-hydroxyphthalic acid diester, but the hue of the resulting image is reddish. This has the disadvantage that it is impossible to obtain a good black image due to the tinge of color, and that the fingerprint-attached area is easily discolored.
本発明者は顕色剤４．４′−ジヒドロキシ−３，３′−
ジイソプロピルジフェニル−２，２−プロパンの持つ優
れた特徴を保持しつつ、しかも良好な黒色画像を得るこ
との出来る感熱記録体、更にまた指紋付着部が退色しに
くい感熱記録体を提供する事を目的として鋭意研究を行
なった結果、本発明をなすに至った。The inventor has discovered that the color developer 4,4'-dihydroxy-3,3'-
The object of the present invention is to provide a heat-sensitive recording material that retains the excellent characteristics of diisopropyldiphenyl-2,2-propane and is capable of obtaining a good black image, and furthermore, a heat-sensitive recording material that is resistant to discoloration in areas where fingerprints are attached. As a result of intensive research, the present invention has been completed.
すなわち、本発明は通常無色ないし淡色の発色性物質と
、この発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、発色性物質が３
−ジ−Ｎ−ブチルアミノ−７−（２−フルオロフェニル
アミノ）フルオランおよび式（１）
で示されるフルオラン物質より選はれる１種または複数
種よりなり、しかも、顕色剤が４．４′−ジヒドロキシ
−３，３−ジインプロピルジフェニル−２，２−プロパ
ン
（Ｒ，はイングロビル基をあられす。）を用いた事を特
徴とする感熱記録体に関する。That is, the present invention provides 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.
-di-N-butylamino-7-(2-fluorophenylamino)fluoran and one or more fluoran substances represented by the formula (1), and the color developer is 4.4' -Dihydroxy-3,3-diimpropyldiphenyl-2,2-propane (R represents an inglovir group).
式（１）で示されるフルオラン化合物と４．４−ジヒド
ロキシ−３，３−ジイソプロピルフェニル−２，２−プ
ロパンとの組合せで得られる感熱記録体は発色色相が赤
゛味となったり、発色部に指紋が付着した場合消色した
シする問題があった。The heat-sensitive recording material obtained by combining the fluoran compound represented by formula (1) and 4,4-dihydroxy-3,3-diisopropylphenyl-2,2-propane has a reddish color hue and a color-forming area. There was a problem that the color would disappear if fingerprints were attached to it.
また顕色剤として４．４−ジヒドロキシ−３，３−ジイ
ソプロピルフェニル−２，２−プロパｙｆ用い、発色剤
として３−ジ−Ｎ−ブチルアミノ−７−（２−フルオロ
フェニルアミノ）フルオランを用いた場合にも色相が緑
色がかり、指紋付着部の退色性も著しい改善ばされず、
画像濃度も良好ではなかった。従って本発明のようにこ
れら３者を組合わせることによ）前記した欠点をすべて
解決した感熱記録体を得ることが出来るということは思
いもよらぬことであった。In addition, 4,4-dihydroxy-3,3-diisopropylphenyl-2,2-propyf was used as a color developer, and 3-di-N-butylamino-7-(2-fluorophenylamino)fluoran was used as a color former. Even when the color was removed, the hue became greenish, and the fading resistance of the fingerprint-attached area was not significantly improved.
Image density was also not good. Therefore, it was unexpected that by combining these three materials as in the present invention, it was possible to obtain a heat-sensitive recording material that solved all of the above-mentioned drawbacks.
本発明において式（１）のフルオラン化合物は１種でも
複数でも良く、３−ジ−Ｎ−ブチルアミノ−７−（２−
フルオロフェニルアミノ）フルオランとの混合比率は１
０／９０〜９０／１０の割合が好ましい。この比率をは
ずれた場合には色相の緑味、赤味が強くなシ、良好な黒
色画像を得ることが出来ない。また指紋付着による消色
を改善することが出来ない。In the present invention, the fluoran compound of formula (1) may be one or more, and may be 3-di-N-butylamino-7-(2-
The mixing ratio with fluorophenylamino) fluorane is 1
A ratio of 0/90 to 90/10 is preferred. If this ratio is exceeded, it will not be possible to obtain a strong greenish or reddish hue or a good black image. Furthermore, it is not possible to improve the decolorization caused by fingerprints.
次に本発明に用いられる物質について述べる。Next, the substances used in the present invention will be described.
（１）式（１）のロイコ化合物
３−ジエチルアミノ−６−メチル−７−アニリノフルオ
ラン、３−（Ｎ−シクロヘキシル−Ｎ−メチルアミノ）
−６−メチル−７−アニリノフルオラン、３−（Ｎ−イ
ンアミル−Ｎエチルアミノ）−６−メチル−７−アニリ
ノフルオラン、３−（Ｎ−インブチル−Ｎ−エチルアミ
ノ）−６−メチル−７−アニリノフルオラン、３−？’
ロリシノ−６−メチル−７−アニリノフルオラン、３−
ピペリジノ−６−メチル−７−アニリノフルオラン、３
−ジプロピルアミノ−６−メチル−７−アニリノフルオ
ラン、３−ジベンジル了ミノ−６−メチル−７−アニリ
ノフルオランなどがあげられる。(1) Leuco compound of formula (1) 3-diethylamino-6-methyl-7-anilinofluorane, 3-(N-cyclohexyl-N-methylamino)
-6-Methyl-7-anilinofluorane, 3-(N-inamyl-N-ethylamino)-6-methyl-7-anilinofluorane, 3-(N-inbutyl-N-ethylamino)-6- Methyl-7-anilinofluorane, 3-? '
loricino-6-methyl-7-anilinofluorane, 3-
piperidino-6-methyl-7-anilinofluorane, 3
Examples thereof include -dipropylamino-6-methyl-7-anilinofluorane, 3-dibenzylamino-6-methyl-7-anilinofluorane, and the like.
（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、テルフェニル、パラベンジルビフェニル、オクタ
ヒドロアントラセン、ベンジルマンデル酸、各種ナフタ
リン誘導体などが用いられる。(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 accelerators such as fatty acid amides such as stearamide, terephthalate esters, terphenyl, Parabenzylbiphenyl, octahydroanthracene, benzylmandelic acid, various naphthalene derivatives, etc. are used.
（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ｔ’）、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４体などが挙げられる。(3) Binder A water-soluble binder is used to isolate and fix the coloring agent dispersed in fine particles from each other (t'), polyvinyl alcohol, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, polyacrylic acid. , casein, gelatin, starch and derivatives thereof.
（４）その他の添加物
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、メルク、酸化チタン、酸化亜鉛等の無機または
有機顔料、ワックス類、保存安定のための酸化防止剤、
フェノール樹脂、紫外線吸収剤、スティック防止のため
の各種脂肪酸金属塩、耐水性向上のための耐水化剤、フ
ェノール樹脂、界面活性剤等を添加することも可能であ
る。(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, Merck, titanium oxide, zinc oxide, etc. , waxes, antioxidants for storage stability,
It is also possible to add a phenol resin, an ultraviolet absorber, various fatty acid metal salts to prevent stickiness, a water resistance agent to improve water resistance, a phenol resin, a surfactant, and the like.
（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、プラスチックシート、フィルムラミネー
ト紙なども基体として使用することが出来る。(5) Substrate The present invention is produced by coating a substrate with a heat-sensitive paint containing the above-mentioned substances. The substrate is generally high quality paper, medium quality paper,
Paper such as coated paper is used, but other materials such as glass fiber sheets, plastic sheets, film-laminated papers, etc. can also be used as the substrate.
本発明の感熱記録体は、高速記録性と保存安定性をあわ
せて満足するうえに良好な黒色画像を得ることが出来、
更にまた指紋付着部が退色しにぐいという特徴を有する
きわめて有用な感熱記録体である。The heat-sensitive recording material of the present invention satisfies both high-speed recording performance and storage stability, and can also obtain good black images.
Furthermore, it is an extremely useful heat-sensitive recording material having the characteristic that the fingerprint-attached portion is resistant to discoloration.
□ 〔実施例〕
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
。□ [Example] The effects of the present invention will be explained in more detail below with reference to Examples.
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ェ
ーカー（東洋鞘機製）で１０時間分散させた。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 Sayaki Co., Ltd.) for 10 hours.
Ａ液：
３−ジ−Ｎ−ブチルアミノ−７−（２−フルオロフェニ
ルアミノ）フルオラン ２．５１３−（Ｎ−シ
クロヘキシル−Ｎ−メチル）アミノ−６−メチル−７−
アニリツフルオラン
２，５？水酸化アルミニウム ２８２
ステアリン酸亜鉛 ５２ホリビニルアル
コ一ル１２％ｉ ３ｓｙ水
５２２Ｂ液：
４．４−ジヒドロキシ−３，３７−ジインブロビルジフ
エニルー２．２−プロパン １５２カオリン
２０９ステアリン酸亜鉛
３２ポリビニルアル；−ル１２チ液 ３
５２水
５２１次にＡ液１２５？、Ｂ液１２５？とポ゛リビニル
アルコール１２チ液５０？、水４゜２を加えて混合攪拌
し調整して塗液をっくシ、次にこの塗液を５０９／−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８
１Ａｒ？になるよう塗布乾燥し感熱記録体を得た。Solution A: 3-di-N-butylamino-7-(2-fluorophenylamino)fluorane 2.513-(N-cyclohexyl-N-methyl)amino-6-methyl-7-
Aniritsu fluoran
2,5? Aluminum hydroxide 282
Zinc stearate 52 holvinyl alcohol 12%i 3sy water
522B solution: 4,4-dihydroxy-3,37-diimbrobyldiphenyl-2,2-propane 152 kaolin
209 Zinc stearate
32 polyvinyl alcohol 12 liquid 3
52 water
521 Next is A liquid 125? , B liquid 125? And polyvinyl alcohol 12% liquid 50? , add 4°2 of water, mix and stir to adjust and coat the coating solution. Next, apply this coating solution to the surface of 509/- high quality paper using a Meyer bar until the coating amount after drying is 8.
1Ar? The mixture was coated and dried to obtain a heat-sensitive recording material.
実施例２
実施例１で用いたＡＭ、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
ニリツフルオランの代りに３−（Ｎ−インアミル−Ｎ−
エチル）アミノ−６−メチル−７−アニリツフルオラン
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
。Example 2 Among the formulations of AM used in Example 1, 3-(N-ynamyl-N-
A thermosensitive recording material was obtained in the same manner as in Example 1 except that ethyl)amino-6-methyl-7-anilite fluorane was used.
実施例３
実施例２でｍ−たＡ液配合のうち３−ジーＮ−７’Ｆ−
ルー ７− （２−フルオロ２エニルアミノ）フルオラ
ンと３−（Ｎ−インアミル−Ｎ−エチル〕アミノ−６−
メチル−７−アニリツフルオランとの混合比率を１：２
にした以外は実施例１と同様にして感熱記録体を得た。Example 3 Among the liquid A formulations m- in Example 2, 3-G-N-7'F-
7-(2-fluoro2enylamino)fluorane and 3-(N-ynamyl-N-ethyl]amino-6-
Mixing ratio with methyl-7-anilite fluorane is 1:2.
A thermosensitive recording material was obtained in the same manner as in Example 1 except that
実施例４
実施例３のフルオラン染料の混合比率を２：ｌにした以
外は実施例１と同様にして感熱記録体を得た。Example 4 A thermosensitive recording material was obtained in the same manner as in Example 1 except that the mixing ratio of the fluoran dye in Example 3 was changed to 2:1.
実施例５
実施例１の塗液と実施例２の塗液を同量混合し、新たな
塗液を得、実施例１と同様にして感熱記録体を得た。Example 5 The same amounts of the coating liquid of Example 1 and the coating liquid of Example 2 were mixed to obtain a new coating liquid, and a heat-sensitive recording material was obtained in the same manner as in Example 1.
比較例１
実施例１で用いたＡ液の配合のうち３−ジ−Ｎ−ブチル
アミノ−７−（２−フルオロフェニルアミノ）フルオラ
ンに代えて３−（Ｎ−シクロヘキシルーＮ−メチル）ア
ミノ−６−メチル−７−アニリツフルオランを用イタ以
外は実施例１と同様にして感熱記録体を得た。Comparative Example 1 In the formulation of Solution A used in Example 1, 3-(N-cyclohexyl-N-methyl)amino- was used instead of 3-di-N-butylamino-7-(2-fluorophenylamino)fluorane. A thermosensitive recording material was obtained in the same manner as in Example 1, except that 6-methyl-7-anilite fluorane was used.
比較例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
ツフルオランに代えて３−ジ−Ｎ−ブチルアミノ−７−
（２−フルオロフェニルアミノ）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。Comparative Example 2 3-di-N-butylamino-7 was used in place of 3-(N-cyclohexyl-N-methyl)amino-6-methyl-7-anilite fluorane in the formulation of Solution A used in Example 1. −
A thermosensitive recording material was obtained in the same manner as in Example 1 except that (2-fluorophenylamino)fluoran was used.
比較例３．４．５
実施例１で用いたＢ液の配合のうち４，４−ジヒドロキ
シ−３，３−ジインプロビルジフェールの代りに
比較例３ではＰ−ヒドロキシ安息香酸ベンジルエステル
比較例４では４−ヒドロキシフタル酸ジメチルエステル
比較例５ではビスフェノールＡ
全周−た以外は実施例１と同様にして感熱記録体を得た
。Comparative Example 3.4.5 In Comparative Example 3, P-hydroxybenzoic acid benzyl ester Comparative Example 4 was used in place of 4,4-dihydroxy-3,3-diimprobil difer in the formulation of Solution B used in Example 1. In Comparative Example 5 of 4-hydroxyphthalic acid dimethyl ester, a thermosensitive recording material was obtained in the same manner as in Example 1 except that bisphenol A was added all around.
以上実施例および比較例、で得た感熱記録体を記録面が
ベック平滑度で５００秒になるようテストスーパーキャ
レンダーで表面処理した。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.
次に表面処理して得られた感熱記録体について市販の０
ｍ７アクシミリ装置ＦＡＣＯＭ ＦＡＸ６２１０（富士
通■製）で記録電力０．９６ Ｗ／″ｄａｔ、通電時間
０．４５ ｍ５ｅｃ、周期的５ ｍ３ｅｃ／ 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、その発色
色相を見た。Next, regarding the heat-sensitive recording material obtained by surface treatment, commercially available
Printing was performed using the m7 axis device FACOM FAX6210 (manufactured by Fujitsu ■) under the conditions of recording power 0.96 W/''dat, current conduction time 0.45 m5ec, periodicity of 5 m3ec/L, and the image density and background density when printed. was measured using a Macbeth densitometer RD-514, and the color hue was observed.
また、耐指紋退色性を見るため印字面に指紋を付着させ
４０℃、９０％ＲＨの条件に４８時間保存し、その時の
退色度合を目視で判定した。Further, in order to check the fingerprint fading resistance, a fingerprint was attached to the printed surface and stored at 40°C and 90% RH for 48 hours, and the degree of fading at that time was visually judged.
結果を第１表に示した。The results are shown in Table 1.
以上本発明の感熱記録体がすぐれた特徴を持っている事
が実証された。As described above, it has been demonstrated that the heat-sensitive recording material of the present invention has excellent characteristics.
第１表Table 1
Claims (1)
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、発色性物質が３−ジ−Ｎ−ブチルア
ミノ−７−（２−フルオロフエニルアミノ）フルオラン
および式（１）▲数式、化学式、表等があります▼（１
） （式中Ｒ＿１、Ｒ＿２は水素原子、アルキル基、脂環基
、アリル基、アラルキル基を示し、Ｒ＿１とＲ＿２は互
に環を形成する事もできる。）で示されるフルオラン物
質より選ばれる１種または複数種よりなり、しかも、顕
色剤として４，４−ジヒドロキシ−３，３−ジイソプロ
ピルジフエニル−２，２−プロパン ▲数式、化学式、表等があります▼ （Ｒ＿１はイソプロピル基をあらわす。） を用いた事を特徴とする感熱記録体。[Scope of Claims] 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, wherein the color-forming substance is 3-di-N -Butylamino-7-(2-fluorophenylamino)fluorane and formula (1) ▲ Contains mathematical formulas, chemical formulas, tables, etc. ▼ (1
) (In the formula, R_1 and R_2 represent a hydrogen atom, an alkyl group, an alicyclic group, an allyl group, and an aralkyl group, and R_1 and R_2 can also mutually form a ring.) 4,4-dihydroxy-3,3-diisopropyldiphenyl-2,2-propane is used as a color developer ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (R_1 represents an isopropyl group). ) A heat-sensitive recording material characterized by using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59178507A JPS6157387A (en) | 1984-08-29 | 1984-08-29 | Thermal recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59178507A JPS6157387A (en) | 1984-08-29 | 1984-08-29 | Thermal recording material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6157387A true JPS6157387A (en) | 1986-03-24 |
| JPH0418560B2 JPH0418560B2 (en) | 1992-03-27 |
Family
ID=16049672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59178507A Granted JPS6157387A (en) | 1984-08-29 | 1984-08-29 | Thermal recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157387A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002098673A1 (en) * | 2001-06-01 | 2002-12-12 | Fuji Photo Film Co., Ltd. | Thermosensitive recording material |
| US7098168B2 (en) | 2001-12-20 | 2006-08-29 | Fuji Photo Film Co., Ltd. | Heat-sensitive recording material |
| US7160840B2 (en) | 2001-06-28 | 2007-01-09 | Fuji Photo Film Co., Ltd. | Thermal recording material |
| US7167654B2 (en) | 2002-04-18 | 2007-01-23 | Opnext Japan, Inc. | Optoelectronic transceiver with power voltage supply detection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109454A (en) * | 1978-02-15 | 1979-08-28 | Kanzaki Paper Mfg Co Ltd | Heatsensitive recording element |
| JPS57150598A (en) * | 1981-03-12 | 1982-09-17 | Yoshitomi Pharmaceut Ind Ltd | Heat sensitive recording paper |
| JPS58208092A (en) * | 1982-05-28 | 1983-12-03 | Fuji Xerox Co Ltd | Heat sensitive recording paper |
-
1984
- 1984-08-29 JP JP59178507A patent/JPS6157387A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109454A (en) * | 1978-02-15 | 1979-08-28 | Kanzaki Paper Mfg Co Ltd | Heatsensitive recording element |
| JPS57150598A (en) * | 1981-03-12 | 1982-09-17 | Yoshitomi Pharmaceut Ind Ltd | Heat sensitive recording paper |
| JPS58208092A (en) * | 1982-05-28 | 1983-12-03 | Fuji Xerox Co Ltd | Heat sensitive recording paper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002098673A1 (en) * | 2001-06-01 | 2002-12-12 | Fuji Photo Film Co., Ltd. | Thermosensitive recording material |
| US7135431B2 (en) | 2001-06-01 | 2006-11-14 | Fuji Photo Film Co., Ltd. | Thermosensitive recording material |
| US7160840B2 (en) | 2001-06-28 | 2007-01-09 | Fuji Photo Film Co., Ltd. | Thermal recording material |
| US7098168B2 (en) | 2001-12-20 | 2006-08-29 | Fuji Photo Film Co., Ltd. | Heat-sensitive recording material |
| US7167654B2 (en) | 2002-04-18 | 2007-01-23 | Opnext Japan, Inc. | Optoelectronic transceiver with power voltage supply detection |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0418560B2 (en) | 1992-03-27 |
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