JPH03159789A - Thermal transfer ink sheet - Google Patents
Thermal transfer ink sheetInfo
- Publication number
- JPH03159789A JPH03159789A JP1297672A JP29767289A JPH03159789A JP H03159789 A JPH03159789 A JP H03159789A JP 1297672 A JP1297672 A JP 1297672A JP 29767289 A JP29767289 A JP 29767289A JP H03159789 A JPH03159789 A JP H03159789A
- Authority
- JP
- Japan
- Prior art keywords
- thermal transfer
- ink sheet
- ink layer
- liquid crystal
- transfer 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
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 13
- 239000003094 microcapsule Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- HVYWMOMLDIMFJA-UHFFFAOYSA-N 3-cholesterol Natural products C1C=C2CC(O)CCC2(C)C2C1C1CCC(C(C)CCCC(C)C)C1(C)CC2 HVYWMOMLDIMFJA-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
サーマルヘッドを用いた熱転写記録方式のプリンタやフ
ァクシミリ等に適用される熱転写インクシ一トに関し、
簡単な構造で、転写画像に温度識別機能を持たせること
のできる熱転写インクシ一トを提供することを目的とし
、
温度により色が可逆的に変化する性質を持つ液晶を、加
熱により溶融しない透明性樹脂で包んだマイクロカプセ
ルと、熱可塑性樹脂との混合物から構成されるインク層
をシート基村上に塗設したことを特徴とする熱転写イン
クシ一トを構成する。[Detailed Description of the Invention] [Summary] Regarding a thermal transfer ink sheet applied to a thermal transfer recording type printer using a thermal head, facsimile, etc., it is possible to provide a temperature identification function to a transferred image with a simple structure. The aim is to provide a thermal transfer ink sheet that can be made by using a mixture of thermoplastic resin and microcapsules in which liquid crystal, which has the property of reversibly changing color depending on temperature, is wrapped in transparent resin that does not melt when heated. The thermal transfer ink sheet is characterized by having an ink layer coated on a sheet substrate.
本発明は熱転写インクシ一トに関する。本発明の熱転写
インクシ一トはサーマルヘッドを用いた熱転写記録方式
のプリンタやファクシミリ等に適用される。The present invention relates to thermal transfer ink sheets. The thermal transfer ink sheet of the present invention is applied to thermal transfer recording type printers, facsimile machines, etc. using thermal heads.
従来の熱転写インクシ一トの概要図を第５図に示す。図
示のように、従来の熱転写インクシ一ト１０のベースフ
ィルム、即ち基材ｌ１は例えばポリエステルなどの表面
が平滑なプラスティクフィルムからなり、その上に熱溶
融性インク層１２が塗工されている。熱溶融性インクは
ワックス材に色材を混入した固体インクである。上記の
熱転写インクシー｝１０を記録紙１３上に熱溶融性イン
ク層１２を対応させて重ねた状態で、インクシートの基
材１１の面にサーマルヘッド１４を押圧し、該サーマル
ヘッド１４の発熱素子により前記熱溶融性インク層１２
を選択的に加熱して、該インク層表面で溶融したインク
或分をしみ出させ、記録紙１３上に所定の文字又はパタ
ーンを転写する。A schematic diagram of a conventional thermal transfer ink sheet is shown in FIG. As shown in the figure, the base film of the conventional thermal transfer ink sheet 10, that is, the base material l1, is made of a smooth-surfaced plastic film such as polyester, and a heat-melting ink layer 12 is coated thereon. . Hot-melt ink is a solid ink made by mixing a wax material with a coloring material. With the heat-melting ink layer 12 superimposed on the recording paper 13, the thermal head 14 is pressed against the surface of the base material 11 of the ink sheet, and the heating element of the thermal head 14 is pressed against the surface of the base material 11 of the ink sheet. The heat-melting ink layer 12
is selectively heated, a portion of the ink melted on the surface of the ink layer oozes out, and predetermined characters or patterns are transferred onto the recording paper 13.
上記の様な従来の熱転写インクシー｝１０を適用すると
、温度による転写像表面の色の変化がないために、転写
画像に温度識別機能を持たせることが出来なかった。When the conventional thermal transfer ink sheet 10 as described above is applied, the transferred image cannot have a temperature identification function because there is no change in color on the surface of the transferred image due to temperature.
そこで、本発明は、簡単な構造で、転写画像に温度識別
機能を持たせることのできる熱転写インクシ一トを提供
することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a thermal transfer ink sheet that has a simple structure and can provide a transferred image with a temperature identification function.
本発明は上記問題を解決するため、第１図に示す様な熱
転写インクシ一トを適用して転写を行う。In order to solve the above problem, the present invention performs transfer by applying a thermal transfer ink sheet as shown in FIG.
即ち、本発明の熱転写インクシ一トは、シート基村上２
１上に、温度により色が可逆的に変化する性質を持つ液
晶３２を、サーマルヘッドｌ４による加熱により溶融し
ない透明性樹脂３１で包んだマイクロカプセル２３ （
第２図）と熱可塑性樹脂２４との混合物から構成される
インク層２２を塗設したことを特徴とする。That is, the thermal transfer ink sheet of the present invention has a sheet base Murakami 2.
1, microcapsules 23 (
2) and a thermoplastic resin 24 is applied.
第３図に示すように、本発明の熱転写インクシ一ト２０
を、インク層２２側を記録紙ｌ３に向けて、この記録紙
１３に重ね合わせてプラテンローラ等の支持体１５に押
しつけ、インクシ一ト２０の基材２１側よりサーマルヘ
ッド１４上の複数の発熱部を印字情報に基づいて選択的
に発熱させると、第３図に示す様に、印字パターンに従
い液晶マイクロカプセル２３が記録紙１３上に転写され
ていく。As shown in FIG. 3, a thermal transfer ink sheet 20 of the present invention
is superimposed on the recording paper 13 with the ink layer 22 side facing the recording paper l3 and pressed against a support 15 such as a platen roller. When the parts are selectively heated based on the print information, the liquid crystal microcapsules 23 are transferred onto the recording paper 13 according to the print pattern, as shown in FIG.
以下、添付図面を参照して本発明の実施例を詳細に説明
する。Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図は本発明に関わる熱転写インクシ一トの概略断面
図である。図において、２１は例えば５μｍの厚さのポ
リエチレンテレフタートフィルム（ＰＥＴ）からなるシ
ート状の基材、２２は例えば９μｍの厚さのインク層で
ある。該インク層２２は第２図に示すようなマイクロカ
プセル２３と例えば酢酸ビニル樹脂等の透明熱可塑性樹
脂（熱変形温度４０℃〉 ２４の重量比４：６の混合物
である。FIG. 1 is a schematic cross-sectional view of a thermal transfer ink sheet according to the present invention. In the figure, 21 is a sheet-like base material made of polyethylene tereftate film (PET) with a thickness of, for example, 5 μm, and 22 is an ink layer with a thickness of, for example, 9 μm. The ink layer 22 is a mixture of microcapsules 23 as shown in FIG. 2 and a transparent thermoplastic resin (heat distortion temperature: 40 DEG C.) 24, such as vinyl acetate resin, in a weight ratio of 4:6.
該マイクロカプセル２３は外皮３１がサーマルヘッド１
４による加熱によっては溶けない、例えばフェノール樹
脂などの透明性高融点樹脂（熱変形温度１３０℃）であ
り、内容物（液晶或分）３２は、例えば第４図に示すよ
うな構造を有するコレステリγク液晶である。コレステ
リック液晶としては、例えば塩化コレステリンノナン酸
コレステリン、オレイン酸コレステリン等がある。該イ
ンク層２２を基材２１上に塗工する手段としては、外被
（透明性樹脂）３１を形或しているフェノール樹脂が一
般溶剤に抵抗を示すのに対し、酢酸ビニル樹脂は多くの
溶剤に溶けるため、例えば溶剤としてアセトンを用いた
ソルベントコーティング法ヲ用いる。The outer shell 31 of the microcapsule 23 is the thermal head 1.
The content (liquid crystal) 32 is a transparent high melting point resin (heat deformation temperature: 130°C) such as phenol resin, which does not melt when heated by 4, and the content (liquid crystal) 32 is, for example, cholesteric resin having a structure as shown in FIG. It is a gamma liquid crystal. Examples of cholesteric liquid crystals include cholesterin chloride, cholesterin nonanoate, and cholesterin oleate. As a means for coating the ink layer 22 on the base material 21, the phenol resin forming the outer cover (transparent resin) 31 is resistant to general solvents, while the vinyl acetate resin is resistant to many solvents. Since it is soluble in a solvent, for example, a solvent coating method using acetone as a solvent is used.
このような構成の熱転写インクシ一ト２０を第４図に示
す様にサーマルプリンタに配設された記録紙１３にイン
ク層２２面を対向させて装着し、サーマルヘッド１４を
押圧した状態で、印加電力をＬＯＷ／ｍｍ” 、印字パ
ルス幅を４ｍｓとした印字条件で転写記録を行う。The thermal transfer ink sheet 20 having such a structure is mounted on the recording paper 13 disposed in a thermal printer as shown in FIG. Transfer recording is performed under printing conditions where the power is LOW/mm" and the printing pulse width is 4 ms.
この熱転写インクシ一ト２０と記録紙ｌ３を該インクシ
一トの基材２１側を外側くサーマルヘッド１４側）にし
て重ね合わせてプラテンローラ等の支持体１５に押しつ
けサーマルヘッド１４上の複数の発熱部を印字情報に基
づいて選択的に発熱させると、インク層２２中の熱可塑
性透明樹脂２４が溶融し２て流動することにより液晶マ
イクロカプセル２３が記録紙１３に転写される。該液晶
マイクロカプセル２３中の液晶或分３２は温度変化でラ
センのピッチの変化を起こし、敗乱する光の波長が変わ
って変色するため２値の色変化をする。The thermal transfer ink sheet 20 and the recording paper 13 are placed one on top of the other with the base material 21 side of the ink sheet facing outward (the thermal head 14 side) and pressed against a support 15 such as a platen roller to generate a plurality of heat waves on the thermal head 14. When the portion is selectively heated based on printed information, the thermoplastic transparent resin 24 in the ink layer 22 melts and flows, thereby transferring the liquid crystal microcapsules 23 onto the recording paper 13. The liquid crystal portion 32 in the liquid crystal microcapsule 23 causes a change in helical pitch due to a temperature change, and the wavelength of the disrupted light changes, resulting in color change, resulting in a binary color change.
これにより、サーマルヘッド１４上の複数の発熱部の各
々について温度変化を感知することができる。Thereby, temperature changes can be sensed for each of the plurality of heat generating parts on the thermal head 14.
上記のように本発明の熱転写インクシ一ト２０によれば
、インク層２２中のマイクロカプセル２３内部に複屈折
を行う液晶を含んでおり、転写像面の色が温度により２
値の変化をするため、異なる色調による印刷に使用でき
る他、温度計や各種工業用検査等にも適用することがで
きる。As described above, according to the thermal transfer ink sheet 20 of the present invention, the microcapsules 23 in the ink layer 22 contain a liquid crystal that exhibits birefringence, and the color of the transferred image surface varies depending on the temperature.
Since the value changes, it can be used for printing with different color tones, and can also be applied to thermometers and various industrial inspections.
第１図は本発明の熱転写記録インクシ一トを説明するた
めの要部断面図、第２図は第１図に示した本発明の熱転
写インクシ一トに含まれるマイクロカプセルの詳細断面
図、第３図は本発明における熱転写インクシ一トを適用
して熱転写記録を行う状態を示す図、第４図は本発明の
熱転写インクシ一トにおけるマイクロカプセルの内容物
であるコレステリック液晶の構造図、第５図は従来の熱
転写記録インクシートの概略断面図である。
１３・・・記録紙、
１４・・・サーマルヘッド、
１５・・・支持体（プラテン）
２０・・・熱転写インクシート
２１・・・基材、
２２・・・インク層、
２３・・・マイクロ力ブセノベ
２４・・・熱可塑性樹脂、
３ｌ・・・透明性樹脂、
３２・・・液晶或分。FIG. 1 is a cross-sectional view of essential parts for explaining the thermal transfer recording ink sheet of the present invention, and FIG. 2 is a detailed cross-sectional view of microcapsules included in the thermal transfer ink sheet of the present invention shown in FIG. 3 is a diagram showing a state in which thermal transfer recording is performed using the thermal transfer ink sheet of the present invention, FIG. 4 is a structural diagram of cholesteric liquid crystal that is the content of microcapsules in the thermal transfer ink sheet of the present invention, and FIG. The figure is a schematic cross-sectional view of a conventional thermal transfer recording ink sheet. 13...Recording paper, 14...Thermal head, 15...Support (platen) 20...Thermal transfer ink sheet 21...Base material, 22...Ink layer, 23...Micro force Busenobe 24...Thermoplastic resin, 3l...Transparent resin, 32...Liquid crystal.
Claims (1)
３２）を、加熱により溶融しない透明性樹脂（３１）で
包んだマイクロカプセル（２３）と、熱可塑性樹脂（２
４）との混合物から構成されるインク層（２２）をシー
ト基材（２１）上に塗設したことを特徴とする熱転写イ
ンクシート。1. Liquid crystal whose color changes reversibly depending on temperature (
32), a microcapsule (23) wrapped in a transparent resin (31) that does not melt by heating, and a thermoplastic resin (2).
A thermal transfer ink sheet characterized in that an ink layer (22) composed of a mixture of 4) and 4) is coated on a sheet base material (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1297672A JPH03159789A (en) | 1989-11-17 | 1989-11-17 | Thermal transfer ink sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1297672A JPH03159789A (en) | 1989-11-17 | 1989-11-17 | Thermal transfer ink sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03159789A true JPH03159789A (en) | 1991-07-09 |
Family
ID=17849644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1297672A Pending JPH03159789A (en) | 1989-11-17 | 1989-11-17 | Thermal transfer ink sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03159789A (en) |
-
1989
- 1989-11-17 JP JP1297672A patent/JPH03159789A/en active Pending
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