JPH0796336B2 - Thermal recording sheet - Google Patents
Thermal recording sheetInfo
- Publication number
- JPH0796336B2 JPH0796336B2 JP62310321A JP31032187A JPH0796336B2 JP H0796336 B2 JPH0796336 B2 JP H0796336B2 JP 62310321 A JP62310321 A JP 62310321A JP 31032187 A JP31032187 A JP 31032187A JP H0796336 B2 JPH0796336 B2 JP H0796336B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- recording sheet
- leuco dye
- color
- methyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
- B41M5/337—Additives; Binders
- B41M5/3375—Non-macromolecular compounds
-
- 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
- B41M5/3336—Sulfur compounds, e.g. sulfones, sulfides, sulfonamides
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
【発明の詳細な説明】 （Ａ）産業上の利用分野 本発明は、ロイコ染料と該ロイコ染料を加熱時に発色さ
せる顕色剤を主たる構成要素とする感熱記録シートに関
し、特に粘着ラベル用に好適で、高速印字が可能、か
つ、白紙部および発色部の劣化を防止した感熱記録シー
トに関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a heat-sensitive recording sheet mainly composed of a leuco dye and a developer that develops a color when the leuco dye is heated, and is particularly suitable for adhesive labels. In addition, the present invention relates to a heat-sensitive recording sheet capable of high-speed printing and preventing deterioration of a white paper portion and a coloring portion.
（Ｂ）従来技術およびその問題点 従来、シート状支持体の表面に淡色若しくは無色をロイ
コ染料と、加熱によって該ロイコ染料を発色させる顕色
剤と、から成る感熱記録紙が知られており、この感熱記
録紙は粘着ラベルなどの用途にも利用されている。この
様な粘着ラベル用感熱記録紙は通常サーマルヘッドによ
り印字される。この印字方式は従来のインクによる印字
方式のものに比較してコンパクトで且つ印字を美麗な行
ない得るという利点を備えている。(B) Prior art and its problems Conventionally, a heat-sensitive recording paper comprising a leuco dye of a light color or a colorless color on the surface of a sheet-like support and a color developer which develops the leuco dye by heating is known. This thermal recording paper is also used for applications such as adhesive labels. Such thermal recording paper for adhesive labels is usually printed by a thermal head. This printing method has the advantages that it is more compact than the conventional printing method using ink and that printing can be performed beautifully.
しかしながらこの様な感熱記録紙の記録層にジオクチル
アジベート（DOA）やジオクチルフタレート（DOP）の様
な可塑剤を含有するプラスチックフィルムが接触すると
印字部（画像部）が消色するという問題が発生する。However, when a plastic film containing a plasticizer such as dioctyl adipate (DOA) or dioctyl phthalate (DOP) comes into contact with the recording layer of such a thermal recording paper, the printed part (image part) is erased. To do.
即ち、スーパーマーケットにおける生鮮食料品などの販
売に於いて、ポリスチレンシートの如きプラスチックト
レーの肉、魚、野菜、惣菜を入れ、その上から軟質ポリ
塩化ビニルなどのストレッチフィルムによりラッピング
を施し、その表面に計量プリンターで印字された粘着ラ
ベルを貼布するのが一般的である。この時に包装した商
品を積み重ねたりして陳列する場合には粘着ラベル用に
従来の感熱記録紙を用いると、粘着ラベルとラップフィ
ルムが密着した時にラップフィルム中の可塑剤が粘着ラ
ベル表面の感熱発色層中に浸透し時間の経過と共に印字
部（画像部）が消色して了い、商品の販売に大きな障害
となる。That is, in the sale of perishable foods in supermarkets, put meat, fish, vegetables, side dishes in a plastic tray such as polystyrene sheet, wrap it with a stretch film such as soft polyvinyl chloride, and on the surface It is common to apply an adhesive label printed by a measuring printer. If the conventional thermosensitive recording paper is used for the adhesive label when the products wrapped at this time are stacked or displayed, the plasticizer in the wrap film causes the thermosensitive coloring on the surface of the adhesive label when the adhesive label and the wrap film are in close contact with each other. It penetrates into the layer and the printed part (image part) disappears with the passage of time, which is a major obstacle to the sale of products.
この可塑剤による印字部（画像部）の消色を防ぐため
に、支持体上にロイコ染料から成る発色剤と、該ロイコ
染料を加熱時に発色させる顕色剤、例えば有機酸やフェ
ノール性化合物から成る顕色剤と、を含有する感熱発色
層を設けると共に、該感熱発色層の上に保護層としての
水溶性高分子層を設けたものが知られている。In order to prevent the decolorization of the printed part (image part) by this plasticizer, it is composed of a color former consisting of a leuco dye on a support and a color developer, such as an organic acid or a phenolic compound, which develops a color when the leuco dye is heated. It is known that a thermosensitive coloring layer containing a color developer is provided, and a water-soluble polymer layer as a protective layer is provided on the thermosensitive coloring layer.
しかしながら、この様な感熱記録材料の場合には可塑剤
に対しての保存性が改良されるものの、保護層を形成し
たことにより熱応答性に劣るという欠点が生じる。However, in the case of such a heat-sensitive recording material, although the storability with respect to the plasticizer is improved, the heat response is inferior due to the formation of the protective layer.
最近の印字機は高速化、省電力化に向いつつあり、それ
に伴い、感熱記録紙の熱応答性を向上させることが強く
要望されているところから、熱応答性に優れ、かつ、白
紙部および発色部の劣化を防止した感熱記録シートの開
発が緊急課題となっている。Recent printers are becoming faster and more energy efficient, and there is a strong demand to improve the thermal response of the thermal recording paper. There is an urgent need to develop a heat-sensitive recording sheet that prevents deterioration of the coloring part.
（Ｃ）発明の目的 本発明者は、可塑剤等に対して保存性が改良され、か
つ、熱応答性が向上した感熱記録シートに関して鋭意検
討した結果、本発明に到達した。(C) Object of the invention The present inventors have arrived at the present invention as a result of extensive studies on a heat-sensitive recording sheet having improved storage stability with respect to a plasticizer and the like and improved thermal response.
（Ｄ）発明の構成 即ち、本発明は、無色ないし淡色のロイコ染料と加熱時
に該ロイコ染料と反応して発色させる顕色剤および増感
剤とを含有する感熱記録層を設けると共に、該感熱記録
層の上に高分子化合物の保護層が設けられている感熱記
録シートにおいて、該ロイコ染料として３−ジブチルア
ミノ−６−メチル−７−アニリノフルオラン、３−ジブ
チルアミノ−７−オルソクロルアリノフルオランの中の
１種を使用し、顕色剤として、ビス−（３−アリル−４
−ヒドロキシフェニル）スルホン、増感剤としてシュウ
酸ジベンジルを使用したことを特徴とする「特許請求の
範囲と同じ」感熱記録シートを提供することにある。(D) Structure of the Invention That is, the present invention provides a heat-sensitive recording layer containing a colorless or light-colored leuco dye and a color developer and a sensitizer which react with the leuco dye to produce a color when heated, and In a heat-sensitive recording sheet having a protective layer of a polymer compound provided on the recording layer, 3-dibutylamino-6-methyl-7-anilinofluorane and 3-dibutylamino-7-orthochlor are used as the leuco dye. One of alinofluorane is used, and bis- (3-allyl-4) is used as a developer.
-Hydroxyphenyl) sulfone and dibenzyl oxalate as a sensitizer are used to provide a "same as claimed" thermal recording sheet.
上記構成により、原因は不明であるが印字機の高速化、
省電力化に対応可能な熱応答性に優れ、かつ、高温（70
℃）で保存しても地肌部の発色がなく白いままであり、
可塑剤等に対し発色部の保存性に優れた感熱記録シート
を開発することができた。Due to the above configuration, although the cause is unknown, speeding up of the printing machine,
It has excellent thermal responsiveness for power saving and high temperature (70
Even if stored at (° C), the skin remains white without coloring.
We were able to develop a heat-sensitive recording sheet with excellent preservability in the colored area against plasticizers.
上記構成を一ケ所でも変更すれば熱応答性、高温保存時
の地肌部の白さ、発色部の保存性の三つの特性のうちい
ずれかが悪化してしまい、実用に供せなくなった。Even if the above configuration is changed even in one place, any one of the three characteristics of the thermal response, the whiteness of the background portion at the time of high temperature storage, and the storage stability of the color-developed portion deteriorates, making it unusable for practical use.
本発明において用いられる主な成分を以下に詳細に説明
するが、本発明の要旨を越えない限り、本発明を限定す
るものではない。The main components used in the present invention will be described in detail below, but the present invention is not limited thereto without departing from the gist of the present invention.
バインダーとしては、デンプン類、ヒドロキシエチルセ
ルロース、メチルセルロース、カルボキシメチルセルロ
ース、ゼラチン、カゼイン、ポリビニルアルコール、変
性ポリビニルアルコール、スチレン−無水マレイン酸共
重合体、エチレン−無水マレイン酸共重合体などの水溶
性バインダー、スチレン−ブタジエン共重合体、アクリ
ロニトリルーブタジエン共重合体、アクリル酸メチル−
ブタジエン共重合体などのラテックス系水不溶性バイン
ダーなどが挙げられる。As the binder, starch, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, polyvinyl alcohol, modified polyvinyl alcohol, styrene-maleic anhydride copolymer, water-soluble binder such as ethylene-maleic anhydride copolymer, styrene -Butadiene copolymer, acrylonitrile-butadiene copolymer, methyl acrylate-
Examples include latex-based water-insoluble binders such as butadiene copolymer.
顔料としては、ケイソウ土、タルク、カオリン、焼成カ
オリン、炭酸カルシウム、炭酸マグネシウム、酸化チタ
ン、酸化亜鉛、酸化ケイ素、水酸化アルミニウム、尿素
−ホルマリン樹脂などが挙げられる。Examples of the pigment include diatomaceous earth, talc, kaolin, calcined kaolin, calcium carbonate, magnesium carbonate, titanium oxide, zinc oxide, silicon oxide, aluminum hydroxide, and urea-formalin resin.
その他に、ステアリン酸亜鉛、ステアリン酸カルシウム
等の高級脂肪酸金属塩、パラフィン、酸化パラフィン、
ポリエチレン、酸化ポリエチレン、ステアリン酸アミ
ド、カスターワックス等のワックス類を、また、ジオク
チルスルホコハク酸ナトリウム等の分散剤、ベンゾフェ
ノン系、ベンゾトリアゾール系などの紫外線吸収剤、さ
らに界面活性剤、蛍光染料などが用いられ得る。In addition, higher fatty acid metal salts such as zinc stearate and calcium stearate, paraffin, oxidized paraffin,
Waxes such as polyethylene, polyethylene oxide, stearic acid amide, and castor wax are used, and dispersants such as sodium dioctylsulfosuccinate, ultraviolet absorbers such as benzophenone-based and benzotriazole-based, and surfactants and fluorescent dyes are used. Can be done.
本発明による感熱記録材に用いられる支持体としては紙
が主として用いられるが、各種不織布、プラスチックフ
ィルム、合成紙、金属箔等あるいはこれらを組合わせた
複合シートを任意に用いることができる。Paper is mainly used as a support for the heat-sensitive recording material according to the present invention, but various non-woven fabrics, plastic films, synthetic papers, metal foils, etc., or a composite sheet in which these are combined can be optionally used.
必要に応じて感熱発色層と支持体の間にアンダーコート
層を設けてもよい。An undercoat layer may be provided between the thermosensitive color developing layer and the support, if necessary.
保護層としては一般に、水溶性高分子化合物が良く、ア
ルギン酸塩、ヒドロキシエチルセルロース、メチルセル
ロース、カルボキシメチルセルロース、ポリビニルアル
コールの中より選ばれる高分子化合物の単用または２種
以上の併用したものが良い。As the protective layer, generally, a water-soluble polymer compound is preferable, and a polymer compound selected from alginates, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose and polyvinyl alcohol may be used alone or in combination of two or more kinds.
また、例えば、アクリル系ラテックス、ビニル系アクリ
ル樹脂、酢酸ビニル・エチレン共重合物、シリコン・ア
クリレート樹脂、スチレン・ブタジエン系ラテックス等
の皮膜形成高分子エマルジョンの導入も図られており、
効果を挙げている。In addition, for example, introduction of film-forming polymer emulsions such as acrylic latex, vinyl acrylic resin, vinyl acetate / ethylene copolymer, silicon / acrylate resin, and styrene / butadiene latex has been attempted.
It has an effect.
さらには、耐水化剤、紫外線吸収剤、離型剤の１種また
は２種以上を併用して、耐水性、耐光性を賦与し、粘着
による皮膜剥離（ブロッキング）を防止したものが好ま
しい。Further, it is preferable to use one or more of a water resistant agent, an ultraviolet absorber and a release agent in combination to impart water resistance and light resistance and prevent film peeling (blocking) due to adhesion.
一方、支持体の裏面には固体表面、例えば、ラップフィ
ルム、包装紙などに貼布し得る様に通常の方法により接
着剤層を設け、その表面に剥離台紙を貼布する。更に接
着剤層と支持体の間に可塑剤などの浸透を防止する為の
障壁層を設けることも出来る。On the other hand, on the back surface of the support, an adhesive layer is provided by a usual method so that it can be applied to a solid surface such as a wrap film or wrapping paper, and a release mount is applied to the surface. Further, a barrier layer for preventing penetration of a plasticizer or the like can be provided between the adhesive layer and the support.
（Ｅ）実施例１ 下記組成物より成る混合物を各々ボールミルで平均粒径
が１〜３μｍになる様に粉砕分散化してＡ液、Ｂ液を調
整した。(E) Example 1 Liquids A and B were prepared by pulverizing and dispersing a mixture of the following compositions in a ball mill so that the average particle diameter was 1 to 3 μm.
（重量部） Ａ液 ３−ジブチルアミノ−６−メチル−７−アニリノフルオ
ラン １ 10％ポリビニルアルコール 1.5 水 2.5 Ｂ液 ビス−（３−アリル−４−ヒドロキシフェニル）スルホ
ン ２ シュウ酸ジベンジル ２ 炭酸カルシウム ３ 10％ポリビニルアルコール 10.5 水 17.5 Ａ液とＢ液を混合して感熱発色層の塗工液とし、上質紙
（坪量50g/m2）の片面に塗布、乾燥して塗布量5g/m2の
感熱発色層を形成させ、ベック平滑度が100秒以上とな
るようにカレンダー掛けを行ない感熱記録紙を作成し
た。(Parts by weight) Liquid A 3-dibutylamino-6-methyl-7-anilinofluorane 1 10% Polyvinyl alcohol 1.5 Water 2.5 Liquid B Bis- (3-allyl-4-hydroxyphenyl) sulfone 2 Dibenzyl oxalate 2 Carbonate Calcium 3 10% Polyvinyl alcohol 10.5 Water 17.5 Liquid A and liquid B are mixed to form a coating liquid for the thermosensitive coloring layer, which is applied to one side of a fine paper (basis weight 50 g / m 2 ) and dried to give an application amount of 5 g / m The thermosensitive coloring layer 2 was formed, and calendering was performed so that the Beck's smoothness was 100 seconds or more to prepare a thermosensitive recording paper.
Ｃ液 10％ポリビニルアルコール 10 20％アクリル系樹脂 ５ 30％ステアリン酸亜鉛 ２ 上記感熱記録紙の感熱発色層上に保護層形成液Ｃ液を塗
布し、乾燥して塗布量3g/m2の保護層を形成し、ベック
平滑度が300秒以上となるようにカレンダー掛けを行な
い、更に、この感熱記録紙と裏面に対し、シリコーン樹
脂を塗工した剥離紙をシリコーン樹脂面に塗布量20g/m2
になる様にアクリル系粘着剤層を設けたものをその粘着
剤層を介して貼合わせ、次いで適当な大きさに切り抜い
て感熱粘着ラベルを得た。C liquid 10% Polyvinyl alcohol 10 20% Acrylic resin 5 30% Zinc stearate 2 Protective layer forming liquid C liquid is applied on the thermosensitive coloring layer of the above thermosensitive recording paper and dried to protect the coating amount of 3 g / m 2 . A layer is formed and calendered so that the Beck's smoothness is 300 seconds or more.Furthermore, a release paper coated with silicone resin is applied to the surface of this thermosensitive recording paper and the back surface at a coating amount of 20 g / m 2. 2
A sheet provided with an acrylic pressure-sensitive adhesive layer so as to form a laminate was stuck via the pressure-sensitive adhesive layer, and then cut out to an appropriate size to obtain a heat-sensitive adhesive label.
実施例２ 実施例１の染料３−ジブチルアミノ−６−メチル−７−
アニリノフルオランの代わりに３−ジブチルアミノ−７
−オルソクロル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、感熱粘着ラベルを得た。Example 2 Dye of Example 1 3-dibutylamino-6-methyl-7-
3-dibutylamino-7 instead of anilinofluorane
-A heat-sensitive adhesive label was obtained in the same manner as in Example 1 except that orthochloranilinofluoran was used.
比較例１ 実施例１の染料３−ジブチルアミノ−６−メチル−７−
アニリノフルオランの代わりに３−（Ｎ−メチル−Ｎ−
シクロヘキシルアミノ）−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、感熱粘
着ラベルを得た。Comparative Example 1 Dye of Example 1 3-dibutylamino-6-methyl-7-
3- (N-methyl-N- instead of anilinofluorane
A heat-sensitive adhesive label was obtained in the same manner as in Example 1 except that cyclohexylamino) -6-methyl-7-anilinofluorane was used.
比較例２ 実施例１で染料３−ジブチルアミノ−６−メチル−７−
アニリノフルオランの代わりに３−ジエチルアミノ−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と同様にして感熱粘着ラベルを得た。Comparative Example 2 Dye 3-dibutylamino-6-methyl-7- in Example 1
3-diethylamino-6 instead of anilinofluorane
A heat-sensitive adhesive label was obtained in the same manner as in Example 1 except that -methyl-7-anilinofluorane was used.
比較例３ 実施例１で染料３−ジブチルアミノ−６−メチル−７−
アニリノフルオランの代わりに３−（Ｎ−エチル−Ｎ−
iso−ペンチル）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、感熱粘
着ラベルを得た。Comparative Example 3 Dye 3-dibutylamino-6-methyl-7-in Example 1
3- (N-ethyl-N- instead of anilinofluorane
A heat-sensitive adhesive label was obtained in the same manner as in Example 1 except that iso-pentyl) amino-6-methyl-7-anilinofluorane was used.
比較例４ 実施例１で顕色剤ビス−（３−アリル−４−ヒドロキシ
フェニル）スルホ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、感熱粘着ラベルを得
た。Comparative Example 4 A heat-sensitive adhesive label was obtained in the same manner as in Example 1 except that bisphenol A was used instead of the developer bis- (3-allyl-4-hydroxyphenyl) sulfone in Example 1.
比較例５ 実施例２で顕色剤ビス−（３−アリル−４−ヒドロキシ
フェニル）スルホンの代わりにビスフェノールＡを用い
た以外は実施例２と同様にして、感熱粘着ラベルを得
た。Comparative Example 5 A heat-sensitive adhesive label was obtained in the same manner as in Example 2 except that bisphenol A was used in place of the developer bis- (3-allyl-4-hydroxyphenyl) sulfone in Example 2.
比較例６ 実施例１で増感剤シュウ酸ジベンジルの代わりにステア
リン酸アマイドを用いた以外は実施例１と同様にして、
感熱粘着ラベルを得た。Comparative Example 6 In the same manner as in Example 1 except that the sensitizer dibenzyl oxalate was replaced with amide stearate in Comparative Example 6,
A heat-sensitive adhesive label was obtained.
比較例７ 実施例２で増感剤シュウ酸ジベンジルの代わりにステア
リン酸アマイドを用いた以外は実施例１と同様にして、
感熱粘着ラベルを得た。Comparative Example 7 In the same manner as in Example 1 except that the sensitizer dibenzyl oxalate was replaced with amide stearate in Comparative Example 7,
A heat-sensitive adhesive label was obtained.
以上のようにして得られた９種の感熱粘着ラベルを用い
て、熱応答性、地肌カブリ、耐可塑剤性試験を実施し
た。Using the 9 types of heat-sensitive adhesive labels obtained as described above, heat responsiveness, background fogging, and plasticizer resistance tests were conducted.
（１）熱応答性 印字装置TH−PMD（大倉電機（株）製）を用いて印加エ
ネルギーを変化させて印字し、発色濃度をマクベス濃度
計RD−514で測定した。(1) Thermal response Printing was performed by changing the applied energy using a printer TH-PMD (manufactured by Okura Electric Co., Ltd.), and the color density was measured with a Macbeth densitometer RD-514.
値が高い程良い。The higher the value, the better.
（２）地肌カブリ 70℃24時間放置した後の地肌濃度を測定した。値が低い
程良い。(2) Background fog The background density was measured after leaving at 70 ° C for 24 hours. The lower the value, the better.
（３）耐可塑剤性 デジタルスケールＤ−805P（（株）石田衝器製作所製）
を用いて印字し、ポリ塩化ビニルのラップを重ねて押圧
下40℃24hr放置した後の濃度を測定し、式 （放置後濃度／放置前濃度）×100（％） を用いて計算した。値が高い程良い。(3) Plasticizer resistance Digital Scale D-805P (manufactured by Ishida Imoki Co., Ltd.)
Was printed, and a polyvinyl chloride wrap was overlaid and left standing at 40 ° C. for 24 hours under pressure. Then, the density was measured and calculated using the formula (density after standing / concentration before standing) × 100 (%). The higher the value, the better.
（Ｆ）発明の効果 表１から明らかなように本発明の感熱粘着ラベルは熱応
答性が改良され、かつ、地肌カブリが少なく、画像の耐
可塑剤性にすぐれたものであった。 (F) Effects of the invention As is clear from Table 1, the heat-sensitive adhesive label of the present invention has improved thermal responsiveness, less background fogging, and excellent plasticizer resistance of images.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display area E
Claims (1)
加熱時に該ロイコ染料と反応して発色させる顕色剤およ
び増感剤とを含有する感熱記録層を設けると共に、該感
熱記録層の上に高分子化合物の保護層が設けられている
感熱記録シートにおいて、該ロイコ染料として３−ジブ
チルアミノ−６−メチル−７−アニリノフルオラン、３
−ジブチルアミノ−７−オルソクロルアニリノフルオラ
ンの中の１種を使用し、顕色剤として、ビス−（３−ア
リル−４−ヒドロキシフェニル）スルホン、増感剤とし
てシュウ酸ジベンジルを使用したことを特徴とする感熱
記録シート。1. A heat-sensitive recording layer containing a colorless or pale-colored leuco dye and a color developer and a sensitizer which react with the leuco dye when heated to form a color on a support. In a thermosensitive recording sheet having a protective layer of a polymer compound provided thereon, 3-dibutylamino-6-methyl-7-anilinofluorane, 3 or 3 is used as the leuco dye.
-Dibutylamino-7-orthochloranilinofluorane was used as one type, bis- (3-allyl-4-hydroxyphenyl) sulfone was used as a color developer, and dibenzyl oxalate was used as a sensitizer. A heat-sensitive recording sheet characterized in that
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310321A JPH0796336B2 (en) | 1987-12-07 | 1987-12-07 | Thermal recording sheet |
| DE88114606T DE3881990T2 (en) | 1987-09-08 | 1988-09-07 | Heat sensitive recording material. |
| EP88114606A EP0306916B1 (en) | 1987-09-08 | 1988-09-07 | A heat-sensitive recording material |
| US07/241,849 US4999332A (en) | 1987-09-08 | 1988-09-08 | Heat-sensitive recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62310321A JPH0796336B2 (en) | 1987-12-07 | 1987-12-07 | Thermal recording sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01150576A JPH01150576A (en) | 1989-06-13 |
| JPH0796336B2 true JPH0796336B2 (en) | 1995-10-18 |
Family
ID=18003826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62310321A Expired - Fee Related JPH0796336B2 (en) | 1987-09-08 | 1987-12-07 | Thermal recording sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0796336B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2672150B2 (en) * | 1989-06-15 | 1997-11-05 | 富士写真フイルム株式会社 | Thermal recording material |
| US5098882A (en) * | 1989-08-24 | 1992-03-24 | Daio Paper Corporation | Heat-sensitive recording medium |
| JPH03218891A (en) * | 1990-01-24 | 1991-09-26 | Kanzaki Paper Mfg Co Ltd | Thermal recording material |
| JP2607740B2 (en) * | 1990-07-12 | 1997-05-07 | 王子製紙株式会社 | Method for producing coating solution for high brightness thermal recording material |
| JP2790731B2 (en) * | 1990-07-31 | 1998-08-27 | 富士写真フイルム株式会社 | Thermal recording material |
| AU725956B2 (en) * | 1997-05-14 | 2000-10-26 | Nippon Kayaku Kabushiki Kaisha | Heat-sensitive recording material and novel crystal of bisphenol S derivative |
| JP6893473B2 (en) | 2015-11-20 | 2021-06-23 | 日本化薬株式会社 | Thermal recording material and diphenyl sulfone |
-
1987
- 1987-12-07 JP JP62310321A patent/JPH0796336B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01150576A (en) | 1989-06-13 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |