JPH0899468A - Heat reversible heat sensitive recording material - Google Patents
Heat reversible heat sensitive recording materialInfo
- Publication number
- JPH0899468A JPH0899468A JP6237245A JP23724594A JPH0899468A JP H0899468 A JPH0899468 A JP H0899468A JP 6237245 A JP6237245 A JP 6237245A JP 23724594 A JP23724594 A JP 23724594A JP H0899468 A JPH0899468 A JP H0899468A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sensitive recording
- recording material
- reversible
- layer
- 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
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、可視画像を繰り返し表
示、消去することができる熱可逆性感熱記録材料に関す
る。FIELD OF THE INVENTION The present invention relates to a thermoreversible thermosensitive recording material capable of repeatedly displaying and erasing a visible image.
【０００２】[0002]
【従来の技術】交通機関の定期券、催し会場や建物への
入場許可証などは、毎日繰り返し使用されるが、管理上
不正乗車、不正入場をチエツクする手段がない。近年、
一部で磁気カ−ドによるチエツク法も採用されつつある
が、チエツクの有無が目視できないため、装置上のトラ
ブルによるチエツクもれのおそれがあり、管理者、利用
者とも不便を感じていた。また各種プリペイドカ−ドに
おいても、磁気カ−ドやＩＣカ−ドが使用されている
が、記録内容が直接目視できないため、支払い金額や残
額を簡単にチエツクできず、使用者に対する内容保証の
点で問題があった。2. Description of the Related Art A commuter pass for a transportation facility, an admission permit for an event venue or a building, etc. are used repeatedly every day, but there is no means for checking illegal boarding or entrance due to management. recent years,
The check method using magnetic cards is being adopted in some cases, but since the presence or absence of the check cannot be visually checked, there is a risk of the check leak due to a trouble on the device, and both the manager and the user feel inconvenient. Magnetic cards and IC cards are also used in various prepaid cards, but since the recorded contents cannot be viewed directly, it is not possible to easily check the amount paid or the balance, which guarantees the contents to the user. There was a problem in terms.
【０００３】そのため従来、記録媒体に目視可能な記録
を行い、またそれを消去する方法が提案されている。例
えば、合成樹脂母材の中に有機低分子物質を分散させ、
温度により透明状態と不透明（白濁）状態に変化する材
料（特開昭５５−１５４１９８）を使用することが提案
されている。この材料は、特定のある温度域から常温に
冷却すると透明になり、またそれよりも高い別の温度域
から常温に冷却されると白濁する性質を有するため、そ
れを利用して可視画像を可逆的に印字・消去することが
できる。Therefore, conventionally, there has been proposed a method of visually recording on a recording medium and erasing it. For example, disperse an organic low molecular weight substance in a synthetic resin matrix,
It has been proposed to use a material (JP-A-55-154198) that changes between a transparent state and an opaque (white turbid) state depending on temperature. This material has the property of becoming transparent when cooled to a room temperature from a certain temperature range, and having the property of becoming cloudy when cooled to a room temperature from another temperature range higher than that, so it can be used to reversible visible images. Can be printed / erased manually.
【０００４】[0004]
【発明が解決しようとする課題】この感熱記録材料は、
ベース基材上に感熱記録層を塗布して作成するため、均
一塗布が困難な媒体や、ベース基材の一部にのみ感熱記
録層を形成したい場合には極めて作成が困難であった。This heat-sensitive recording material is
Since the heat-sensitive recording layer is applied and formed on the base material, it is extremely difficult to form the heat-sensitive recording layer on a medium where uniform application is difficult or when it is desired to form the heat-sensitive recording layer only on a part of the base material.
【０００５】[0005]
【課題を解決するための手段】本発明は上記問題点を解
決するものであって、その要旨は、樹脂母材中に有機低
分子物質を分散させてなり、温度により透明状態と不透
明状態との可逆変化を生じる熱可逆性感熱記録層を有す
る感熱記録材料であって、耐熱性樹脂フイルム上に感熱
記録層、鏡面反射層および保護被膜を順次形成してな
り、その記録材料を対象物に貼り付けて可視画像を表
示、消去するようにした熱可逆性感熱記録材料にある。SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and the gist thereof is to disperse an organic low molecular weight substance in a resin base material and to bring it into a transparent state or an opaque state depending on temperature. A thermosensitive recording material having a thermoreversible thermosensitive recording layer that causes a reversible change of a thermosensitive recording layer, a thermosensitive recording layer, a specular reflection layer, and a protective coating are sequentially formed on a heat-resistant resin film. It is a thermoreversible thermosensitive recording material which is pasted to display and erase a visible image.
【０００６】以下本発明を詳しく説明する。図１は本発
明熱可逆性感熱記録材料の例を示す断面図、図２は本発
明熱可逆性感熱記録材料をカード基材に貼付した例の斜
視図である。図１において、１は耐熱性樹脂フイルムで
あり、例えばポリエチレンテレフタレート（ＰＥＴ）か
らなり、厚さは１〜２０μｍ程度が好適である。２は感
熱記録層であり、耐熱性樹脂フイルム上に例えば厚さ３
〜２０μｍ程度に塗布形成してある。その上に、記録の
コントラストを上げるための鏡面反射層３と、保護被膜
４を形成してある。各層間には必要に応じアンカー剤層
などを設けても良い。The present invention will be described in detail below. FIG. 1 is a sectional view showing an example of the thermoreversible thermosensitive recording material of the present invention, and FIG. 2 is a perspective view of an example in which the thermoreversible thermosensitive recording material of the present invention is attached to a card substrate. In FIG. 1, reference numeral 1 denotes a heat resistant resin film, which is made of, for example, polyethylene terephthalate (PET), and the thickness is preferably about 1 to 20 μm. Reference numeral 2 is a heat-sensitive recording layer, which has a thickness of, for example, 3 on the heat-resistant resin film.
The coating is formed to have a thickness of about 20 μm. A specular reflection layer 3 for increasing the recording contrast and a protective coating 4 are formed thereon. An anchor agent layer or the like may be provided between the layers as necessary.
【０００７】このようにして形成された感熱記録材料５
を適宜寸法に裁断し、保護被膜４側に接着剤または粘着
剤などを塗布し、例えばカードなどの対象物に貼り付け
て使用する。図２はその例を示すもので、必要な印刷表
示などを施したカード基材７の一部に接着剤または粘着
剤により貼り付けてある。この状態では、耐熱性樹脂フ
イルム１が表面になって、サーマルヘツドなどの熱や圧
力に対する保護層として機能する。Thermal recording material 5 thus formed
Is cut to an appropriate size, an adhesive or a pressure sensitive adhesive is applied to the protective coating 4 side, and the product is attached to an object such as a card for use. FIG. 2 shows an example thereof, which is attached to a part of the card substrate 7 on which necessary printing and the like are provided by an adhesive or a pressure sensitive adhesive. In this state, the heat-resistant resin film 1 becomes the surface and functions as a protective layer against heat and pressure such as a thermal head.
【０００８】このようにして作成されたカードは、感熱
記録材料５をサーマルヘツド、加熱スタンプ、加熱ロー
ルなどの加熱手段により温度Ｔ1 に加熱して透明化す
る。次に透明化した感熱記録材料５を、サーマルヘツ
ド、加熱印判などにより、表示文字部のみ局部的に、透
明化温度Ｔ1 よりも高い温度Ｔ2 に加熱してやると、そ
の部分が白濁（不透明化）して記録表示を行なうことが
できる。その記録の消去は、再度感熱記録材料５を透明
化温度Ｔ1 に加熱することにより行なう。The card thus produced is made transparent by heating the heat-sensitive recording material 5 to a temperature T 1 by a heating means such as a thermal head, a heating stamp or a heating roll. Next, the transparent heat-sensitive recording material 5 is locally heated to a temperature T 2 higher than the clearing temperature T 1 by using a thermal head, a heating stamp or the like, and the part is clouded (opaque). ) To display a record. The recording is erased by heating the heat-sensitive recording material 5 again to the transparentizing temperature T 1 .
【０００９】耐熱性樹脂フイルム１としては、ＰＥＴ、
ポリエーテルイミド、ポリエーテルエーテルケトン、ポ
リサルフオン、ポリフエニレンサルフアイド、ポリアリ
レート、ポリエーテルサルフオン、ポリカーボネート、
ポリエチレンナフタレート、ポリイミドなどの耐熱性良
好で透明なフイルムを採用することができる。As the heat-resistant resin film 1, PET,
Polyetherimide, polyetheretherketone, polysulfone, polyphenylene sulfide, polyarylate, polyether sulfone, polycarbonate,
A transparent film having good heat resistance, such as polyethylene naphthalate or polyimide, can be used.
【００１０】感熱記録材料５の感熱記録層２を構成する
高分子樹脂母材としては、透明で製膜性の良い樹脂が望
ましく、ポリ塩化ビニル、塩化ビニル−酢酸ビニル共重
合体などの塩化ビニル共重合体、ポリ塩化ビニリデン、
塩化ビニリデン共重合体、ポリエステル、ポリアミド、
ポリスチレン、ポリメチル（メタ）アクリレートまたは
その共重合体などが挙げられる。As the polymer resin base material constituting the heat-sensitive recording layer 2 of the heat-sensitive recording material 5, a transparent resin having a good film-forming property is desirable, and polyvinyl chloride, vinyl chloride such as vinyl chloride-vinyl acetate copolymer and the like. Copolymer, polyvinylidene chloride,
Vinylidene chloride copolymer, polyester, polyamide,
Examples thereof include polystyrene, polymethyl (meth) acrylate, and copolymers thereof.
【００１１】これらの樹脂としては、ガラス転移温度
（Ｔｇ）が６０℃〜１２５℃の範囲にあるものを選択す
るのが好ましい。即ち、感熱記録材料を高温、例えば４
０〜６０℃に保管後印字すると、常温で保管したものよ
りも高い印字エネルギが必要になるという傾向がある。
これは、高温中に保管すると、高分子樹脂母材が運動し
やすくなり、初期の結晶状態から融解エネルギの高い結
晶状態に変化するためと推測される。As these resins, those having a glass transition temperature (Tg) in the range of 60 ° C. to 125 ° C. are preferably selected. That is, the heat-sensitive recording material is heated to a high temperature, for example, 4
Printing after storage at 0 to 60 ° C tends to require higher printing energy than that stored at room temperature.
It is presumed that this is because, when stored at a high temperature, the polymer resin base material is likely to move and the crystalline state changes from the initial crystalline state to a crystalline state with high melting energy.
【００１２】そこで、Ｔｇが保管温度よりも高い（通常
６０℃以上）樹脂を選択することによりこの問題を解決
することができる。なおＴｇが１２５℃を超えると、印
字白濁時に１２５℃以上のエネルギを与えないと印字の
安定性が得られないので、繰り返し使用による熱劣化の
原因となり好ましくない。Therefore, this problem can be solved by selecting a resin having a Tg higher than the storage temperature (usually 60 ° C. or higher). If the Tg exceeds 125 ° C., the printing stability cannot be obtained unless energy of 125 ° C. or more is applied during printing turbidity, which causes thermal deterioration due to repeated use, which is not preferable.
【００１３】樹脂母材中に分散させる有機低分子物質と
しては、高級脂肪酸、高級ジカルボン酸、高級脂肪酸エ
ステル、高級ケトン、高級エ−テル、高級アルコ−ル、
およびその誘導体など、それ自体公知のものが挙げら
れ、透明化温度域を広げるために融点の異なるものを混
合して使用することができる。鏡面反射層２は、アルミ
ニウム、スズなどの金属の蒸着や箔貼り合わにより形成
することができる。また保護被覆４としては、例えばア
クリル樹脂塗膜を採用することができる。Organic low molecular weight substances dispersed in the resin matrix include higher fatty acids, higher dicarboxylic acids, higher fatty acid esters, higher ketones, higher ethers, higher alcohols,
Examples thereof include those known per se, such as derivatives thereof and derivatives thereof, and those having different melting points can be mixed and used in order to widen the transparentization temperature range. The specular reflection layer 2 can be formed by vapor deposition of a metal such as aluminum or tin or foil bonding. The protective coating 4 may be an acrylic resin coating film, for example.
【００１４】本発明記録材料は例えば、入場、買物、レ
ンタルなどのプリペイドカードの可視記録層材料として
使用することができ、使用の都度、使用金額および残額
を磁気記録とともに記録層２に可視的に表示することに
より、常に正確な残額を知ることができる。また各種感
熱記録紙として利用することができる。その場合、従来
はカード全体に感熱記録層を形成していたのに対し、必
要部分のみに感熱記録層を形成することができるので、
感熱記録層の厚さ均一性などが改善されるとともに製造
も容易になり、コスト的にも有利となる。また本発明感
熱記録材料は、平坦な対象物表面に形成された凹部内に
記録部を形成したり、曲面状の対象物に記録部を形成す
るなども容易に行なうことができる。The recording material of the present invention can be used, for example, as a visible recording layer material for prepaid cards for entrance, shopping, rental, etc., and each time the recording material is used, the used amount and the remaining amount are visually displayed on the recording layer 2 together with the magnetic recording. By displaying it, you can always know the exact balance. Further, it can be used as various thermal recording papers. In that case, conventionally, the heat-sensitive recording layer was formed on the entire card, whereas the heat-sensitive recording layer can be formed only on a necessary portion.
The uniformity of the thickness of the heat-sensitive recording layer is improved and the production is facilitated, which is advantageous in terms of cost. Further, the heat-sensitive recording material of the present invention can easily form a recording portion in a concave portion formed on the surface of a flat object, or a recording portion on a curved object.
【００１５】[0015]
【発明の効果】本発明の熱可逆性感熱記録材料を用いる
と、対象物の必要部分のみに感熱記録部を容易に形成す
ることができ、また平坦でない対象物に対しても感熱記
録部を容易に形成することができる。When the thermoreversible thermosensitive recording material of the present invention is used, the thermosensitive recording portion can be easily formed only on a necessary portion of the object, and the thermosensitive recording portion can be formed even on an object which is not flat. It can be easily formed.
【図１】本発明熱可逆性感熱記録材料の例を示す断面
図。FIG. 1 is a sectional view showing an example of a thermoreversible thermosensitive recording material of the present invention.
【図２】本発明熱可逆性感熱記録材料をカード基材に貼
付した例の斜視図。FIG. 2 is a perspective view of an example in which the thermoreversible thermosensitive recording material of the present invention is attached to a card substrate.
１ 耐熱性樹脂フイルム ２ 感熱記録層 ３ 鏡面反射層 ４ 保護被覆 ５ 感熱記録材料 ６ 接着剤または粘着剤 ７ カード基材 1 Heat-Resistant Resin Film 2 Thermosensitive Recording Layer 3 Specular Reflective Layer 4 Protective Coating 5 Thermosensitive Recording Material 6 Adhesive or Adhesive 7 Card Base Material
Claims (1)
てなり、温度により透明状態と不透明状態との可逆変化
を生じる熱可逆性感熱記録層を有する感熱記録材料であ
って、耐熱性樹脂フイルム上に感熱記録層、鏡面反射層
および保護被膜を順次形成してなり、その記録材料を対
象物に貼り付けて可視画像を表示、消去するようにした
熱可逆性感熱記録材料。1. A heat-sensitive recording material having a thermoreversible heat-sensitive recording layer in which an organic low-molecular substance is dispersed in a resin base material and which undergoes a reversible change between a transparent state and an opaque state depending on temperature. A thermoreversible thermosensitive recording material comprising a resin film, on which a thermosensitive recording layer, a specular reflection layer and a protective film are sequentially formed, and the recording material is attached to an object to display and erase a visible image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6237245A JPH0899468A (en) | 1994-09-30 | 1994-09-30 | Heat reversible heat sensitive recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6237245A JPH0899468A (en) | 1994-09-30 | 1994-09-30 | Heat reversible heat sensitive recording material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0899468A true JPH0899468A (en) | 1996-04-16 |
Family
ID=17012557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6237245A Pending JPH0899468A (en) | 1994-09-30 | 1994-09-30 | Heat reversible heat sensitive recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0899468A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02187389A (en) * | 1989-01-17 | 1990-07-23 | Tomoegawa Paper Co Ltd | Heat transfer sheet with reversible heat-sensitive recording layer |
| JPH054478A (en) * | 1991-06-05 | 1993-01-14 | Mitsubishi Plastics Ind Ltd | Visible recording magnetic card |
| JPH05139054A (en) * | 1991-11-21 | 1993-06-08 | Toppan Printing Co Ltd | Rewritable thermal recording medium |
| JPH0648034A (en) * | 1992-04-13 | 1994-02-22 | Ricoh Co Ltd | Reversible, thermosensible recording label and card |
| JPH0664317A (en) * | 1992-08-12 | 1994-03-08 | Mitsubishi Plastics Ind Ltd | Reversible thermal recording material |
-
1994
- 1994-09-30 JP JP6237245A patent/JPH0899468A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02187389A (en) * | 1989-01-17 | 1990-07-23 | Tomoegawa Paper Co Ltd | Heat transfer sheet with reversible heat-sensitive recording layer |
| JPH054478A (en) * | 1991-06-05 | 1993-01-14 | Mitsubishi Plastics Ind Ltd | Visible recording magnetic card |
| JPH05139054A (en) * | 1991-11-21 | 1993-06-08 | Toppan Printing Co Ltd | Rewritable thermal recording medium |
| JPH0648034A (en) * | 1992-04-13 | 1994-02-22 | Ricoh Co Ltd | Reversible, thermosensible recording label and card |
| JPH0664317A (en) * | 1992-08-12 | 1994-03-08 | Mitsubishi Plastics Ind Ltd | Reversible thermal recording material |
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