JPS59174388A - Thermal recording material - Google Patents

Thermal recording material

Info

Publication number
JPS59174388A
JPS59174388A JP58048013A JP4801383A JPS59174388A JP S59174388 A JPS59174388 A JP S59174388A JP 58048013 A JP58048013 A JP 58048013A JP 4801383 A JP4801383 A JP 4801383A JP S59174388 A JPS59174388 A JP S59174388A
Authority
JP
Japan
Prior art keywords
heat
recording material
protective layer
coated
water
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
Application number
JP58048013A
Other languages
Japanese (ja)
Other versions
JPH0216712B2 (en
Inventor
Kenichi Tanaka
賢一 田中
Takeshi Suzuki
武 鈴木
Chifuyu Kuriyama
栗山　千冬
Kensaku Azuma
健策 東
Mitsuhiro Yoshida
光宏 吉田
Nobuhiro Kubota
展弘 久保田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tomoegawa Co Ltd
Original Assignee
Tomoegawa Paper Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tomoegawa Paper Co Ltd filed Critical Tomoegawa Paper Co Ltd
Priority to JP58048013A priority Critical patent/JPS59174388A/en
Publication of JPS59174388A publication Critical patent/JPS59174388A/en
Publication of JPH0216712B2 publication Critical patent/JPH0216712B2/ja
Granted legal-status Critical Current

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
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/04—Direct thermal recording [DTR]

Abstract

PURPOSE:A thermal recording material having improved water resistance and chemical resistance by orderly providing a heat-sensitive color-forming layer composed of a leuco dye, an electron acceptant substance, and a binder and a protective layer composed of a carboxyl group-modified water-soluble butyral resin and polyamide-epoxy resin on a supporter. CONSTITUTION:A paint composed primarily of a leuco dye, an electron acceptant substance, and a binder is coated on a supporter and dried to form a heat- sensitive color-forming layer. On the color-forming layer, a protective layer paint composed primarily of a carboxyl group-modified polyvinyl alcohol and a polyamide-epoxy resin as a cross linking agent is coated to obtain a thermal recording material. To the protective layer composition, polyvinyl alcohol, starch, methyl cellulose, hydroxyethyl cellulose, etc., may be added to an extent that characteristic properties such as water resistance, chemical resistance, etc., are not damaged. Also, as needed, a pigment, a lubricant, a dispersant, a surfactant, etc., may be added.

Description

【発明の詳細な説明】 本発明は耐水性及び耐薬品性を改良した感熱記録体であ
シ、更に詳細には常温架橋性の保護層を有する感熱記録
体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-sensitive recording material having improved water resistance and chemical resistance, and more particularly to a heat-sensitive recording material having a protective layer crosslinkable at room temperature.

従来、クリスタルバイオレットラクトンの如きロイコ染
料とビスフェノールＡの如きフェノール性化合物とを結
着剤などと共に支持体上に塗布した感熱記録体が公知で
ある。（特公昭４５−１４０３９など）。この種の感熱
記録体は印字が容易であり、かつ、得られた記録が鮮明
である等のことから、プリンターやファクシミリ用の記
録体として広く利用されている。また、最近ではその特
徴を活かし、定期券、回数券等の券紙類やカード、ラベ
ル類への利用とその用途も拡大してきている。Conventionally, heat-sensitive recording materials are known in which a leuco dye such as crystal violet lactone and a phenolic compound such as bisphenol A are coated on a support together with a binder and the like. (Special Public Interest Publication No. 45-14039, etc.). This type of thermal recording material is widely used as a recording material for printers and facsimiles because it is easy to print and the resulting records are clear. In addition, recently, by taking advantage of its characteristics, its use in ticket papers such as commuter passes and coupon tickets, cards, and labels, and its applications have been expanded.

しかるに、これらの新たな用途では、従来のオフィス等
での使用環境に比べ、非常に苛酷な条件下におかれるこ
とが多く、この種の感熱記録体では不都合な場合が多い
。たとえば、この種の感熱記録体はロイコ染料とフェノ
ール性化合物との化学反応を利用しているため、薬品性
が極めて悪く、可塑剤を含む塩化ビニル製の定期入れや
食品ランプに接触させておいたシ、食用油、・・ンドク
リームや整髪剤などが付着したりすると、記録部が消色
したり、未記録部が発色したりして記録が判読できなく
なる。まだ、この種の感熱記録体は、水系分散塗料とし
て支持体上に塗工されるだめ、水濡れ状態で表面を摩擦
されたりすると、塗膜が容易に剥離溶出してしまい、記
録が判読できなくなる。即ち、これらの新たな用途に対
応するためにば、可塑剤や油などに対する耐薬品性及・
び強固なＬ 耐水性の両面を兼ね備えて感熱記録体であることが必要
となる。However, these new uses often involve conditions that are much harsher than the conventional environments in which they are used, such as in offices, and this type of heat-sensitive recording material is often inconvenient. For example, this type of heat-sensitive recording material uses a chemical reaction between a leuco dye and a phenolic compound, so it has extremely poor chemical resistance and cannot be used in contact with PVC commuter bags or food lamps that contain plasticizers. If dirt, edible oil, cream, hair styling product, etc. get on the recorder, the recorded area will fade or the unrecorded area will become colored, making the record illegible. However, since this type of heat-sensitive recording material is coated onto a support as a water-based dispersion paint, if the surface is rubbed while wet, the coating film will easily peel off and elute, making the record unreadable. It disappears. In other words, in order to respond to these new uses, chemical resistance against plasticizers and oil, etc.
It is necessary for the heat-sensitive recording material to have both of the following characteristics: strong L and water resistance.

従来、上記の感熱記録体の耐薬品性を向上させるため支
持体上に感熱発色層、さらにこの上に薬品の浸入を防ぐ
保護層を設けるという構成の感熱記録体が種々提案され
ている。、（特開昭５４−１２８３４７、特開昭５６−
１２６１９３、特開昭５７−２９４９１、特開昭５７−
１０５３９０など）。しかしながら、耐薬品性を満足し
ても、未だ強固な耐水性を備えている感熱記録体は開発
されていない。というのは、上記保護層としては耐薬品
性は勿論のこと、発色感度を低下させない、スティッキ
ングを生じない、地かぶりを生じない等の特性が要求さ
れ、これらの特性を満足するためＫは水溶性高分子を主
体とした保護層が望ましく、ゆえに耐水性が不充分にな
るのである。また、特開昭５６−１４６７９には水溶性
高分子化合物と耐水化剤を併用する保護層について記載
されているが、保護層は感熱発色層上に塗工されるため
、耐水化処理に熱を加えることができず、回報に記載さ
れている材料では充分な耐水性を得ることができない。Conventionally, in order to improve the chemical resistance of the heat-sensitive recording material, various heat-sensitive recording materials have been proposed in which a heat-sensitive coloring layer is provided on a support, and a protective layer for preventing penetration of chemicals is provided thereon. , (JP-A-54-128347, JP-A-56-
126193, JP-A-57-29491, JP-A-57-
105390 etc.). However, even if chemical resistance is satisfied, a heat-sensitive recording material with strong water resistance has not yet been developed. This is because the above-mentioned protective layer is required not only to have chemical resistance but also to have properties such as not reducing color development sensitivity, not causing sticking, and not causing background fog, and in order to satisfy these properties, K is water-soluble. It is desirable to use a protective layer mainly composed of a polyester polymer, which results in insufficient water resistance. In addition, JP-A-56-14679 describes a protective layer that uses a water-soluble polymer compound and a water-resistant agent in combination, but since the protective layer is coated on the heat-sensitive coloring layer, the water-resistant treatment requires heat cannot be added, and the materials described in the circular cannot provide sufficient water resistance.

従って、本発明の目的は前記の欠点を解決することにち
り、更に詳細には耐薬品性を有することは勿論のこと、
常温放置で充分な架橋反応を生じ、強固な耐水性を発揮
する保護層を有する感熱記録体を提供することにある。Therefore, the object of the present invention is to solve the above-mentioned drawbacks, and more specifically, to provide chemical resistance as well as
The object of the present invention is to provide a heat-sensitive recording material having a protective layer that undergoes a sufficient crosslinking reaction when left at room temperature and exhibits strong water resistance.

この目的を達成するため、本研究者は鋭意研究の結果、
耐薬品性（ｄ勿論のこと発色感度を低下させない、ステ
ィッキングを生じない、地かぶりを生じない等の特性を
有する保護層の材料として、水溶性ブチラール樹脂が有
効であることを見中し、これを常温で耐水化するだめに
検討を加えた結果、水溶性ブチラール樹脂にカルボキシ
ル基を導入し、架橋材としてポリアミドエポキシ樹脂を
添加することで常温において架橋反応を生じせしめ、強
固な耐水性を得ることに成功した。上記、カルボキシル
基を導入した水溶性ブチラール樹脂とポリアミドエポキ
シ樹脂を主成分とした保護層組成物を感熱発色層上に設
けることによって、耐薬品性は勿論のこと、非常に強固
な耐水性を有する感熱記録体を開発した。In order to achieve this purpose, this researcher has conducted intensive research and found that
Considering that water-soluble butyral resin is effective as a material for a protective layer that has properties such as chemical resistance (d), as well as properties such as not reducing color development sensitivity, not causing sticking, and not causing background fogging, we developed this material. As a result of our research into making water resistant at room temperature, we introduced carboxyl groups into water-soluble butyral resin and added polyamide epoxy resin as a crosslinking agent to cause a crosslinking reaction at room temperature, resulting in strong water resistance. By providing the above-mentioned protective layer composition mainly composed of water-soluble butyral resin into which a carboxyl group has been introduced and polyamide epoxy resin on the heat-sensitive coloring layer, it is not only chemical resistant but also extremely strong. We have developed a thermosensitive recording medium with excellent water resistance.

本発明の感熱記録体を製造するには、ますロイコ染料電
子受容性物質及び結着剤を主成分とする塗料を支持体上
に塗布乾燥し感熱発色層を形成し、この感熱発色層上に
上記カルボキシル基変性ポリビニルアルコールと架橋剤
としてのポリアミドエポキシ樹脂を主成分とする保護層
塗料を塗工し製没される。この保護層組成物には、耐水
性、耐薬品性等の特性を損なわない限りに於いて通常の
ポリビニルアルコール、澱粉、メチルセルロース、ヒド
ロキンエチルセルロース、ポリアクリルアミド、インブ
チレン−無ホマレイン酸アルカリ塩等の水溶性高分子化
合物、スチレン−ブタジェンラテックスやアクリル酸エ
ステル共重合体エマルジョン等が添加できる。まだ、必
要に応じ、炭酸カルノウムや水酸化アルミニウム等の顔
料や滑材、分散剤、界面活性剤等を添加することもでき
る。In order to produce the heat-sensitive recording material of the present invention, a paint containing a leuco dye electron-accepting substance and a binder as main components is coated on a support and dried to form a heat-sensitive coloring layer. A protective layer paint containing the above carboxyl group-modified polyvinyl alcohol and a polyamide epoxy resin as a crosslinking agent as the main components is coated, and then the product is manufactured. This protective layer composition may contain conventional polyvinyl alcohol, starch, methyl cellulose, hydroquine ethyl cellulose, polyacrylamide, inbutylene-anofomaleic acid alkali salt, etc., as long as it does not impair properties such as water resistance and chemical resistance. A water-soluble polymer compound, styrene-butadiene latex, acrylic acid ester copolymer emulsion, etc. can be added. If necessary, pigments such as carnoum carbonate and aluminum hydroxide, lubricants, dispersants, surfactants, etc. can also be added.

これら感熱発色層上に設けられる保護層の厚さとしては
、１μ准以上、好ましくは３〜１５μｍが耐薬品性、発
色感度の面で良好である。The thickness of the protective layer provided on these thermosensitive coloring layers is approximately 1 μm or more, preferably 3 to 15 μm, which is good in terms of chemical resistance and coloring sensitivity.

本発明に於ける発色層はロイコ染料、電子受容性物質及
び結着剤を主成分としているが、以下に各成分の具体例
を示す。The coloring layer in the present invention contains a leuco dye, an electron-accepting substance, and a binder as main components, and specific examples of each component are shown below.

本発明に使用されるロイコ染料とは、通常無色ないし淡
色のもので加熱時電子受容性物質と反応し、発色するも
のであり、 ３、３−　ヒス（ｐ−ジメチルアミノフェニル）−フタ
リド３．３−ビス＜ｐ−ジメチルアミノフェニル）−６
−シ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）−６−ジ
メチルアミノフェニル 等のトリフェニルメタンフタリド系染料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−７−
ンクロヘキソルアミノンルオラン ３−ジエチルアミノ−６〜メチル−７−アニリツフルオ
ジン ３−ビペリジノ−６−メチル−７−アニリノフルオラン
３−（Ｎ−メチル−Ｎ−シクロヘキンルノアミノ−６−
）ｆルー７−アニリツフルオラン等のフルオラン系染料
、 さらにはローダミンラクタム系、スピロピラン系、オー
ラミン系、フェノチアジン系などのロイコ染料が使用さ
れるが、本発明はこれらの代表例に限定されるものでは
ない。The leuco dye used in the present invention is usually colorless or light-colored and reacts with an electron-accepting substance when heated to develop color, and includes 3,3-his(p-dimethylaminophenyl)-phthalide. 3-bis<p-dimethylaminophenyl)-6
-Dimethylaminophthalide 3. Triphenylmethanephthalide dyes such as 3-bis(p-dimethylaminophenyl)-6-dimethylaminophenyl 3-diethylamino-7-chlorofluoran 3-diethylamino-7-
cyclohexolaminolluorane 3-diethylamino-6-methyl-7-anilithufluorazine 3-biperidino-6-methyl-7-anilinofluorane 3-(N-methyl-N-cyclohexylunoamino-6-
) Fluoran dyes such as f-7-anilitufluorane, and leuco dyes such as rhodamine lactam, spiropyran, auramine, and phenothiazine dyes are used, but the present invention is limited to these representative examples. isn't it.

上記、ロイコ染料を加熱時、発色させる電子受容性物質
としては、活性白土、ゼオライト、ベントナイトなどの
無機固体酸、シュウ酸、没食子酸、安息香酸、サリチル
酸などの有機酸やその金属塩なども使用できるが、好壕
しくけフェノール性化合物であり、たとえば、 ４．４′−イノプロピリデンジフェノール４．４′−イ
ンプロピリデンビス（２−クロロフェノール）４．４′
−インプロピリデンビス（２−メチルフェノール）４．
４′−インプロピリデンビス（２−ｔｅｒｔ　−ブチル
フェノール） ４．４’−シクロヘキンリデンジフェノール４−フェニ
ルフェノール、α−ナフトール、β−ナフトールｐ−ヒ
ドロキシ安息香酸エステル化合物などがあシ、これらの
１種または２種以上を使用することができる。As the electron-accepting substance that causes the leuco dye to develop color when heated, inorganic solid acids such as activated clay, zeolite, and bentonite, organic acids such as oxalic acid, gallic acid, benzoic acid, and salicylic acid, and their metal salts are also used. 4,4'-Inopropylidene diphenol 4,4'-Inopropylidene bis(2-chlorophenol) 4,4'
-Impropylidene bis(2-methylphenol)4.
4'-Impropylidene bis(2-tert-butylphenol) 4.4'-cyclohequinylidene diphenol 4-phenylphenol, α-naphthol, β-naphthol p-hydroxybenzoic acid ester compounds, etc., 1 of these A species or two or more species can be used.

これらのロイコ染料と電子受容性物Ｃ−とを支持体上に
担持しておくために使用される結着剤としては、ポリビ
ニルアルコール、澱粉、アラビアゴム、ゼラチン、メチ
ルセルロース、ヒドロキノエチルセルロース、カルホキ
／メチルセルロース、ポリビニルピロリド／、ポリアク
リルアマイド、スチレン−無水マレイン酸共重合体アル
カリ塩、インブチレン−無水マレイン酸アルカリ塩等の
水溶性高分子化合物、スチレンーブタジエンラテノクス
やアクリル酸エステル共重合体エマルジョンなどが使用
できる。まだ、必要に応じ、炭酸カルシウム、シリカ、
タルク、水酸化アルミニウム等の顔料や、ステアリン酸
アマイド、メチロール化ステアリン酸アマイド等の感度
向上剤などを含有させることができる。Binders used to support these leuco dyes and the electron acceptor C- on the support include polyvinyl alcohol, starch, gum arabic, gelatin, methylcellulose, hydroquinoethylcellulose, and calhoki/ Water-soluble polymer compounds such as methylcellulose, polyvinylpyrrolid/, polyacrylamide, styrene-maleic anhydride copolymer alkali salt, imbutylene-maleic anhydride alkali salt, styrene-butadiene latenox and acrylic acid ester copolymer Emulsions etc. can be used. Still, if necessary, add calcium carbonate, silica,
Pigments such as talc and aluminum hydroxide, and sensitivity improvers such as stearamide and methylolated stearamide can be contained.

以下、実施例により本発明を更に具体的に述べる。Hereinafter, the present invention will be described in more detail with reference to Examples.

実施例 Ａ液 Ｂ液 Ａｉ、Ｂ液をそれぞれ別々のボールミルで２４時間粉砕
、分散し、感熱発色層塗料を調整した。Example A liquid B liquid Ai and liquid B were each ground and dispersed in separate ball mills for 24 hours to prepare a heat-sensitive coloring layer coating.

上記感熱発色層塗料を坪量５０　ｆ／ｎ？の原紙に乾燥
後の塗工量５　？／ｒｒ？となるように塗工乾燥し、感
熱発色層を形成した。The above heat-sensitive coloring layer paint has a basis weight of 50 f/n? Coating amount after drying on base paper: 5 ? /rr? It was coated and dried to form a heat-sensitive coloring layer.

次いで下記に示す配合で保護層塗料を調整し、上記感熱
層上に乾燥後塗布量４？汐となるよう塗工し、本発明の
感熱記録体を得た。Next, a protective layer paint was prepared according to the formulation shown below, and after drying, a coating amount of 4? was applied onto the heat-sensitive layer. This was coated to give a watery texture to obtain a heat-sensitive recording material of the present invention.

比較例１〜′ｆ＋。Comparative Example 1~'f+.

実施例における感熱発色層をペースとして、以下に示す
保護層塗料を乾燥後の塗工量４９ＡＴ？と々ダ るように塗工し、比較例１〜ｆｉＶの感熱記録体を作製
した。Using the heat-sensitive coloring layer in the example as a pace, the protective layer paint shown below was coated in an amount of 49AT after drying. The coating was applied rapidly to produce heat-sensitive recording bodies of Comparative Examples 1 to fiV.

比較例１ 比較例２ 比較例３ 比較例４ 上記作製した実施例、比較例１〜惹の感熱記録体を２０
°Ｃ，６（１％ＲＩ（の常温、常湿下に１週間放置した
後、感熱記録装置（パナファノクス７０００、松下電送
製）で記録を行い、下記に示す試験を行った。Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 The above-produced examples, Comparative Examples 1 to 20
After being left at room temperature and humidity at 6°C (1% RI) for one week, recording was performed using a thermosensitive recording device (Panafanox 7000, manufactured by Matsushita Densen), and the following tests were conducted.

（１）耐可塑剤試験 ５０℃雰囲気中で、塩化ビニル製食品ランプフィルムを
記録部及び未記録部に２００２Δｄの圧力で２４時間接
触させ、記録部の濃度変化を測定した。(1) Plasticizer Resistance Test In an atmosphere of 50° C., a vinyl chloride food lamp film was brought into contact with the recorded and unrecorded areas at a pressure of 2002Δd for 24 hours, and the density change in the recorded areas was measured.

（２）耐油性試験 ５０℃雰囲気中で、綿実油を塗布し２４時間放置し、記
録部の濃度変化を測定した。(2) Oil resistance test Cottonseed oil was applied in an atmosphere of 50°C, left for 24 hours, and changes in density of the recorded area were measured.

（３）耐水性試験 試験片を２０°Ｃの水に完全に水没させ１時間放置し、
塗面の溶出状態を確認した後、取り出して表面を指で摩
擦して塗面の剥離の状態を調べ、下記により判定した。(3) Water resistance test The test piece was completely submerged in water at 20°C and left for 1 hour.
After confirming the elution state of the coated surface, the sample was taken out and the surface was rubbed with a finger to examine the state of peeling of the coated surface, which was judged as follows.

○：塗面の溶出、摩擦による剥離が全くない。○: No elution of the coated surface or peeling due to friction.

△、塗面の溶出は少ないが、摩擦により容易に剥離する
。△: There is little elution from the coated surface, but it peels off easily due to friction.

×：塗面が溶出する。×: The coated surface is eluted.

表１試験結果 結果に示されるごとく、水溶性バインダーは、１可塑剤
性と耐油性は比較的強いが耐水性においてｅ実用に耐え
ない。本実施例は、耐可塑剤性、耐油Ａも良く、さらに
耐水性も良い結果を示している。As shown in the test results in Table 1, the water-soluble binder has relatively strong plasticizer properties and oil resistance, but is not practical in terms of water resistance. This example shows good results in plasticizer resistance, oil resistance A, and water resistance.

特許出願人 株式会社巴川製紙所 ４９ 牡 よ、 注 一patent applicant Tomoekawa Paper Mill Co., Ltd. 49 male Yo, note one

Claims (1)

【特許請求の範囲】[Claims] 支持体上に無色ないし淡色のロイコ染料と該染料を熱時
発色させる電子受容性物質及び結着剤を主成分とする感
熱発色層を設け、さらにこの感熱発色層上にカルボキシ
ル基変性水溶性ブチラール樹脂とポリアミドエポキシ樹
脂を主成分とする保護層を設けてなる感熱記録体。A heat-sensitive coloring layer containing a colorless or light-colored leuco dye, an electron-accepting substance that causes the dye to color when heated, and a binder is provided on the support, and a carboxyl group-modified water-soluble butyral layer is further disposed on the heat-sensitive coloring layer. A heat-sensitive recording material with a protective layer mainly composed of resin and polyamide epoxy resin.
JP58048013A 1983-03-24 1983-03-24 Thermal recording material Granted JPS59174388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58048013A JPS59174388A (en) 1983-03-24 1983-03-24 Thermal recording material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58048013A JPS59174388A (en) 1983-03-24 1983-03-24 Thermal recording material

Publications (2)

Publication Number Publication Date
JPS59174388A true JPS59174388A (en) 1984-10-02
JPH0216712B2 JPH0216712B2 (en) 1990-04-18

Family

ID=12791418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58048013A Granted JPS59174388A (en) 1983-03-24 1983-03-24 Thermal recording material

Country Status (1)

Country Link
JP (1) JPS59174388A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134292A (en) * 1984-12-04 1986-06-21 Tomoegawa Paper Co Ltd Thermal recording material
JPS61270188A (en) * 1985-05-24 1986-11-29 Tomoegawa Paper Co Ltd Thermal recording medium
JPH01122483A (en) * 1987-11-06 1989-05-15 Ricoh Co Ltd Thermal recording material
JPH01190483A (en) * 1988-01-27 1989-07-31 Canon Inc Material to be recorded
JPH06247050A (en) * 1993-02-24 1994-09-06 Ricoh Co Ltd Heat sensitive recording material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134292A (en) * 1984-12-04 1986-06-21 Tomoegawa Paper Co Ltd Thermal recording material
JPH0446238B2 (en) * 1984-12-04 1992-07-29 Tomoegawa Paper Co Ltd
JPS61270188A (en) * 1985-05-24 1986-11-29 Tomoegawa Paper Co Ltd Thermal recording medium
JPH0422153B2 (en) * 1985-05-24 1992-04-15 Tomoegawa Paper Co Ltd
JPH01122483A (en) * 1987-11-06 1989-05-15 Ricoh Co Ltd Thermal recording material
JPH01190483A (en) * 1988-01-27 1989-07-31 Canon Inc Material to be recorded
JPH06247050A (en) * 1993-02-24 1994-09-06 Ricoh Co Ltd Heat sensitive recording material

Also Published As

Publication number Publication date
JPH0216712B2 (en) 1990-04-18

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