JPH032092A - Thermal transfer recording material - Google Patents
Thermal transfer recording materialInfo
- Publication number
- JPH032092A JPH032092A JP1138719A JP13871989A JPH032092A JP H032092 A JPH032092 A JP H032092A JP 1138719 A JP1138719 A JP 1138719A JP 13871989 A JP13871989 A JP 13871989A JP H032092 A JPH032092 A JP H032092A
- Authority
- JP
- Japan
- Prior art keywords
- thermal transfer
- transfer recording
- recording material
- ink
- surface tension
- 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
- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 5
- 239000011737 fluorine Substances 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 abstract description 5
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 229920002284 Cellulose triacetate Polymers 0.000 abstract description 2
- 239000004952 Polyamide Substances 0.000 abstract description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 abstract description 2
- 229920000515 polycarbonate Polymers 0.000 abstract description 2
- 239000004417 polycarbonate Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 238000004040 coloring Methods 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 229920006255 plastic film Polymers 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- -1 Polyethylene terephthalate Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- VOWAEIGWURALJQ-UHFFFAOYSA-N Dicyclohexyl phthalate Chemical compound C=1C=CC=C(C(=O)OC2CCCCC2)C=1C(=O)OC1CCCCC1 VOWAEIGWURALJQ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野ｌ
クシミリ等の熱転写記録装置に供する熱転写ｉ！ａ録材
に関し、特に比較的寓速なライン型熱転写記録装置で平
滑度の低い紙に対しても印字品質や画像の優れた転写が
得られる熱転写記録装置に供する熱転写記録材に関する
。Detailed Description of the Invention] (Industrial Field of Use) Regarding thermal transfer i!a recording materials used in thermal transfer recording devices such as Kushimiri, especially for paper with low smoothness in relatively fast line-type thermal transfer recording devices. The present invention also relates to a thermal transfer recording material used in a thermal transfer recording device that can provide excellent print quality and image transfer.
【従来の技術Ｊ
近年、熱転写記録はノンインパクトで無騒音、メンテナ
ンスフリー、低コスト、小型軽量化可能、カラー化可能
等の特徴を有する為に、ファクシミリ、コンピュータ端
末、レコーダ等多くの分野で用いられている。[Conventional Technology J] In recent years, thermal transfer recording has been used in many fields such as facsimiles, computer terminals, and recorders because it has the characteristics of being non-impact, noiseless, maintenance-free, low cost, small and lightweight, and can be colored. It is being
しかし、本熱転写記録方式の転写性は、転写紙に普通紙
を用いた場合、普通紙表面の凹凸、表面物性、インク層
の接着力、浸透性等に大きく影響される。特に表面凹凸
の大きい紙の場合には熱溶融したインクが凸部或はその
近傍にのみ付着するため、印字された像の一部が欠けた
りして印字品位を低下させることになる。However, when plain paper is used as the transfer paper, the transferability of this thermal transfer recording method is greatly influenced by the unevenness of the surface of the plain paper, the surface physical properties, the adhesive strength of the ink layer, the permeability, etc. Particularly in the case of paper with large surface irregularities, the thermally molten ink adheres only to the convex portions or the vicinity thereof, resulting in parts of the printed image being chipped off and degrading the print quality.
上記課題を解決するために、インクフィルムの綴本発明
は、熱転写型プリンタや、複写機、ファ成や構造を工夫
したり、ヘッドの構造を工夫して紙当り性を良くする、
或はヘッドとプラテンの接触圧をあげたり、ヘッドに振
動を加える等のいろいろな技術が提案されている。In order to solve the above-mentioned problems, the present invention proposes a thermal transfer printer, a copier, a printer, a copying machine, a structure, a head structure, etc., which improves the paper contact property.
Alternatively, various techniques have been proposed, such as increasing the contact pressure between the head and the platen, or applying vibration to the head.
しかしながら、先のインクフィルムやヘッド構造の改善
に関しても、各々印字品質に向上は見られるものの、従
来の印字機構に使用してもそれほどの効果をもたらすも
のではなかった。特に印字機構に関してはヘッド圧を上
げると、紙とインク間の摩擦が大きくなり地汚れが発生
し、印字品位を著しく悪くする欠点があった。However, although the aforementioned improvements in ink film and head structure have improved printing quality, they have not produced much of an effect even when used in conventional printing mechanisms. In particular, with respect to the printing mechanism, when the head pressure is increased, the friction between the paper and the ink increases, causing background smearing, which significantly deteriorates the printing quality.
そこで、地汚れ等の発生を防止し印字機構に負担をかけ
ずに低平清紙にも優れた印字品質、画像を得る方式とし
て、熱転写記録材上の固体インクを加熱溶融する記録部
と該熱転写記録材を被転写物に加圧転写する転写部を分
離して設け、記録ヘッドを発熱してインクを溶融させ、
直ちに隣接する加圧ローラにより記録紙及び熱転写記録
材を加圧したのち記録紙と熱転写記録材を剥離する技術
が考案されている。この記録装置の構造図を第２図に示
す。Therefore, as a method to prevent background smudges and to obtain excellent print quality and images even on low-quality paper without putting a burden on the printing mechanism, we developed a recording section that heats and melts the solid ink on the thermal transfer recording material. A separate transfer section is provided to pressurize and transfer the thermal transfer recording material to the transfer target, and the recording head generates heat to melt the ink.
A technique has been devised in which the recording paper and the thermal transfer recording material are immediately pressed by an adjacent pressure roller and then the recording paper and the thermal transfer recording material are separated. A structural diagram of this recording apparatus is shown in FIG.
［発明が解決しようとする課題及び目的ｌしかしながら
、従来のインクを用いた熱転写記録材を先の熱転写記録
装置に用いた場合、−旦溶融したインクが加圧ローラま
で移動する間に、溶融したインクが溶融していない外周
部に広がってしまい均一なドツトが形成できないといっ
た課題があった。[Problems and Objectives to be Solved by the Invention] However, when a thermal transfer recording material using conventional ink is used in the above-mentioned thermal transfer recording device, - While the ink that has been melted moves to the pressure roller, There was a problem in that the ink spread around the unmelted outer periphery, making it impossible to form uniform dots.
そこで本発明は、インク溶融と加圧転写機構を分離した
熱転写記録装置に供する熱転写記録材にあって溶融した
インクが外周部に広がらない熱転写記録材を提供するこ
とにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a thermal transfer recording material that is used in a thermal transfer recording device in which ink melting and pressure transfer mechanisms are separated, and in which melted ink does not spread to the outer circumference.
【課題を解決するための手段Ｊ
上記譚趙を解決するために、本発明の熱転写記録材は、
記録ヘッドにラインサーマルヘッドを用い、熱転写記録
材上の固体インクを加熱溶融する記録部と該熱転写記録
材を被転写物に加圧転写する転写部が分離して設けられ
た熱転写記録装置に供する熱転写記録材に於て、前記固
体インクの表面張力が３０ｄｙｎ／ｃｍ （１００℃）
以下である事を特徴とする。[Means for Solving the Problems J] In order to solve the above problem, the thermal transfer recording material of the present invention has the following features:
A thermal transfer recording device is provided in which a line thermal head is used as a recording head, and a recording section that heats and melts solid ink on a thermal transfer recording material and a transfer section that pressurizes and transfers the thermal transfer recording material to an object to be transferred are provided separately. In the thermal transfer recording material, the surface tension of the solid ink is 30 dyn/cm (100°C)
It is characterized by the following:
更には、前記固体インクはフッソ系及び／又はシリコン
系界面活性剤を含有している事を特徴とする。Furthermore, the solid ink is characterized in that it contains a fluorine-based and/or silicon-based surfactant.
１実施例１
以下に、本発明の実施例を詳細に説明するが本発明はこ
れに限定するものではない。1 Example 1 Examples of the present invention will be described in detail below, but the present invention is not limited thereto.
第１図に本発明の熱転写記録材の構造を示す。FIG. 1 shows the structure of the thermal transfer recording material of the present invention.
基材１としては、従来より公知のフィルムを用いること
ができ、例えばポリエステル、トリアセチルセルロース
、ポリカーボネート、ポリアミド、ポリイミドどうの比
較的耐熱性の優れたグラスチックフィルムが使用できる
０本実施例では、厚さ約６μのポリエチレンテレフタレ
ートを用いた。As the base material 1, conventionally known films can be used, for example, glass films made of polyester, triacetylcellulose, polycarbonate, polyamide, polyimide, etc., which have relatively excellent heat resistance, can be used. Polyethylene terephthalate with a thickness of about 6 μm was used.
又、ヘッドと接触する基材１の表面にシリコーン樹脂、
フッソ樹脂、エポキシ樹脂、フェノール樹脂等からなる
耐熱性保護層２を設けることにより、基材１の耐熱性を
向上することができる。本実施例では、シリコン樹脂を
主成分とする層厚が約０． ２μの耐熱性保護層２を用
いた。In addition, silicone resin,
By providing the heat-resistant protective layer 2 made of fluorocarbon resin, epoxy resin, phenol resin, etc., the heat resistance of the base material 1 can be improved. In this example, the thickness of the layer mainly composed of silicone resin is about 0. A heat-resistant protective layer 2 with a thickness of 2μ was used.
インク層３の成分としては、カーボンブラック等の顔料
、染料等の着色材、熱可塑性樹脂、ワラインクの溶融状
態を保つためにフタル酸ジシクシクロヘキシル、ポワオ
ールベンゾエート、ポリエチレングリコール、バニリン
等の過冷却特性を示す添加材を加えても良い。The components of the ink layer 3 include pigments such as carbon black, colorants such as dyes, thermoplastic resins, and supercooled dicyclohexyl phthalate, polyol benzoate, polyethylene glycol, vanillin, etc. to maintain the melted state of the wax ink. Additives that exhibit properties may be added.
（実施例１）
基材１上に下記の組成のインク層を厚みが約４μになる
ようにホットメルトコーターを用いて塗工した。(Example 1) An ink layer having the following composition was coated on the substrate 1 using a hot melt coater so that the thickness was about 4 μm.
インク層組成 重量部カーボンブラ
ック １３α−オレフィン無水マレイン
酸ワックスＥＶＡ樹脂 ５ポリ
オールベンゾエート ４７フツソ系界面活性剤
（ダイキン工業製
ＤＳ−４０３） ０．２このイ
ンクの１００℃に於ける表面張力を協和界面化学製表面
張力計を用いて測定したところ、２４ ｄ ｙ ｎ ／
ｃ ｍであった。Ink layer composition Parts by weight Carbon black 13 α-olefin maleic anhydride wax EVA resin 5 Polyol benzoate 47 Fuso-based surfactant (DS-403 manufactured by Daikin Industries) 0.2 The surface tension of this ink at 100°C was determined by Kyowa Interface Science. When measured using a manufactured surface tension meter, 24 d yn /
It was cm.
（実施例２）
基材１上に下記の組成のインク層を厚みが約５μになる
ようにホットメルトコーターを用いて塗工した。(Example 2) An ink layer having the following composition was coated on the base material 1 using a hot melt coater so that the thickness was about 5 μm.
インク層組成 重量部カーボンブラ
ック １５パラフインワツクス
３４ＥＶＡｐｌ脂 ６ベ
ンゾフレツクス ４５シリコン系界面活
性剤（東しシリコン製５Ｈ−３７’７１）
０．５このインクの１００℃に於ける表面張
力を実施例１と同様に測定したところ、２０ ｄ ｙ
ｎ ／ ｃ ｍであった。Ink layer composition Weight part Carbon black 15 Paraffin wax
34 EVApl fat 6 Benzoflex 45 Silicone surfactant (Toshi Silicon 5H-37'71)
0.5 When the surface tension of this ink at 100°C was measured in the same manner as in Example 1, it was found that 20 d y
It was n/cm.
（比較例１）
基材１上に下記の組成のインク層を厚みが約４μになる
ようにホットメルトコーターを用いて塗工した。(Comparative Example 1) An ink layer having the following composition was coated on the substrate 1 using a hot melt coater so that the thickness was about 4 μm.
インク層組成 重量部カーボンブラ
ック １３α−オレフィン無水マレイン
酸ワックスＥＶＡ樹脂 ５ポリ
オールベンゾエート ４７このインクの１００
℃における表面張力を実施例１と同様に測定したところ
、３５ ｄ ｙ ｎ ／ ｃ ｍであった。Ink layer composition Parts by weight Carbon black 13 α-olefin Maleic anhydride wax EVA resin 5 Polyol benzoate 47 100 of this ink
When the surface tension at ℃ was measured in the same manner as in Example 1, it was 35 dyn/cm.
上記実施例１．２及び比較例１で作成した熱転写記録材
を次の熱転写記録装置及び条件で転写を行った。The thermal transfer recording materials prepared in Example 1.2 and Comparative Example 1 were transferred using the following thermal transfer recording apparatus and conditions.
プラテン２１及び加圧ローラ２２はステンレススチール
製、ヘッドは発熱体をヘッドエツジ部に形成したものを
用いた。The platen 21 and pressure roller 22 were made of stainless steel, and the head had a heating element formed at the edge of the head.
転写条件
（１）プラテン−加圧ローラ圧力
４ ｋ ｇ ／ ｃ ｍ
（２）グラテン−ヘッド圧力
２０ｇ／ｃｍ
（３）パルス周期 ３ ｍ ｓ ｅ ｃ ／ ｌ
ｉ ｎ ｅ（４）印加エネルギー ０．２１ｍｊ／ｄａ
ｔ（５）パルス印加後の加圧までの時間
７７ｍ５
（６）プラテン径 Φ４０ｍｍ（７）加
圧ローラ径 Φ１０ｍｍ尚、転写紙はベ
ック平滑度が約３秒のランカスターボンド紙及び約３０
秒のＰＰＣ用紙を用いた。Transfer conditions (1) Platen-pressure roller pressure 4 kg/cm (2) Graten-head pressure 20 g/cm (3) Pulse period 3 msec/l
i n e (4) Applied energy 0.21 mj/da
t(5) Time from pulse application to pressure application 77m5 (6) Platen diameter Φ40mm (7) Pressure roller diameter Φ10mm The transfer paper is Lancaster bond paper with Beck smoothness of approximately 3 seconds and approximately 30 mm.
Second PPC paper was used.
転写結果を第１表に示す。尚、表中のＯ〜×は最良〜不
良を段階的に示す評価である。The transcription results are shown in Table 1. Note that O to × in the table is a graded evaluation from best to poor.
第１表
したインクが外周部に広がることなく圧力転写され、低
平滑紙にも安定した転写が得られた。一方、表面張力の
高い熱転写ｉ！［ｌ！録材は溶Ｉｔ ｆ＆圧力転写の間
に溶融インクが外周部に逃ばてしまい安定した転写が得
られなかった。The ink shown in Table 1 was pressure-transferred without spreading to the outer periphery, and stable transfer was obtained even on low-smooth paper. On the other hand, thermal transfer i! with high surface tension! [l! During melting and pressure transfer of the recording material, the molten ink escaped to the outer periphery and stable transfer could not be obtained.
［発明の効果１
本発明は以上説明したように、インク溶融と加圧転写機
構を分離した熱転写記録装置に供する熱転写記録材にお
いてフッソ系やシリコン系の界面活性剤を含有させイン
クの表面張力を３０ｄｙｎ／ ｃ ｍ以下にすることで
普通紙にたいしても安定した転写の可能な熱転写記録材
を得るものである。[Effect of the Invention 1] As explained above, the present invention improves the surface tension of the ink by containing a fluorine-based or silicon-based surfactant in a thermal transfer recording material used in a thermal transfer recording device in which ink melting and pressure transfer mechanisms are separated. By setting it to 30 dyn/cm or less, a thermal transfer recording material capable of stable transfer even to plain paper can be obtained.
結果より、表面張力が低い熱転写記録材は溶融The results show that thermal transfer recording materials with low surface tension melt.
第１図は、本発明の熱転写記録材の断面を示す構造図。
第２図は、本発明の熱転写記録材を用いる熱転写記録装
置の基本構成区。
１・・・基材
２・・・耐熱性保護層
３・・・インク雇
・プラテン
・加圧ローラ
・サーマルヘッド
・熱転写記録材
・転写紙
以上
出願人 セイコーエプソン株式会社
代理人弁理士 銘木 喜三部他１名
第２図FIG. 1 is a structural diagram showing a cross section of the thermal transfer recording material of the present invention. FIG. 2 shows the basic configuration of a thermal transfer recording device using the thermal transfer recording material of the present invention. 1...Substrate 2...Heat-resistant protective layer 3...Ink, platen, pressure roller, thermal head, thermal transfer recording material, transfer paper and above Applicant: Seiko Epson Corporation Representative Patent Attorney Kizo Meiki Department and 1 other person Figure 2
Claims (2)
写記録材上の固体インクを加熱溶融する記録部と該熱転
写記録材を被転写物に加圧転写する転写部が分離して設
けられた熱転写記録装置に供する熱転写記録材に於て、
前記固体インクの表面張力が３０ｄｙｎ／ｃｍ（１００
℃）以下である事を特徴とする熱転写記録材。(1) Thermal transfer recording uses a line thermal head as the recording head, and has a recording section that heats and melts the solid ink on the thermal transfer recording material and a transfer section that presses and transfers the thermal transfer recording material to the transferred object, which are provided separately. In the thermal transfer recording material used in the device,
The solid ink has a surface tension of 30 dyn/cm (100
℃) or less.
界面活性剤を含有している事を特徴とする特許請求の範
囲第１項記載の熱転写記録材。(2) The thermal transfer recording material according to claim 1, wherein the solid ink contains a fluorine-based and/or silicon-based surfactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138719A JPH032092A (en) | 1989-05-31 | 1989-05-31 | Thermal transfer recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138719A JPH032092A (en) | 1989-05-31 | 1989-05-31 | Thermal transfer recording material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032092A true JPH032092A (en) | 1991-01-08 |
Family
ID=15228545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1138719A Pending JPH032092A (en) | 1989-05-31 | 1989-05-31 | Thermal transfer recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571523U (en) * | 1992-02-28 | 1993-09-28 | 三菱農機株式会社 | Transmission structure |
| US5508885A (en) * | 1993-04-26 | 1996-04-16 | Mitsubishi Denki Kabushiki Kaisha | IC card having improved heat dissipation |
-
1989
- 1989-05-31 JP JP1138719A patent/JPH032092A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571523U (en) * | 1992-02-28 | 1993-09-28 | 三菱農機株式会社 | Transmission structure |
| US5508885A (en) * | 1993-04-26 | 1996-04-16 | Mitsubishi Denki Kabushiki Kaisha | IC card having improved heat dissipation |
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