JPH0251395B2 - - Google Patents
Info
- Publication number
- JPH0251395B2 JPH0251395B2 JP60286355A JP28635585A JPH0251395B2 JP H0251395 B2 JPH0251395 B2 JP H0251395B2 JP 60286355 A JP60286355 A JP 60286355A JP 28635585 A JP28635585 A JP 28635585A JP H0251395 B2 JPH0251395 B2 JP H0251395B2
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- wax
- thermal transfer
- ink
- ink 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.)
- Expired - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 24
- 230000008018 melting Effects 0.000 claims description 15
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 14
- 239000000194 fatty acid Substances 0.000 claims description 14
- 229930195729 fatty acid Natural products 0.000 claims description 14
- 150000004665 fatty acids Chemical class 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000001993 wax Substances 0.000 description 37
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 206010047571 Visual impairment Diseases 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ORAWFNKFUWGRJG-UHFFFAOYSA-N Docosanamide Chemical compound CCCCCCCCCCCCCCCCCCCCCC(N)=O ORAWFNKFUWGRJG-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- KNUQSCOJQIOBPL-UHFFFAOYSA-N benzamide;octadecanoic acid Chemical compound NC(=O)C1=CC=CC=C1.CCCCCCCCCCCCCCCCCC(O)=O KNUQSCOJQIOBPL-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000006367 bivalent amino carbonyl group Chemical group [H]N([*:1])C([*:2])=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- -1 isocyanate compounds Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
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
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
【発明の詳細な説明】
〔概要〕
本発明は繰り返し転写可能な熱転写インクシー
トを用いた熱転写記録装置やフアクシミリ等によ
り印字の熱写記録時に、転写後の熱転写インクシ
ートのインク層表面に生じた転写残像状の粗面パ
ターン上を、サーマルヘツドが押圧した状態で摺
動することにより、記録紙上に前記粗面パターン
が汚れとして転写されることを防止するため、該
熱転写インクシートの熱溶融性インク層を構成す
る低融点ワツクス材に、ウレタン結合を有するワ
ツクス状化合物と脂肪酸アミドワツクスを用いる
ことにより、転写後のインク層に発生する粗面の
固さを常温で強固なものにして、該粗面パターン
が残像の形の汚れや地汚れとして記録紙に転写さ
れることを解消し、繰り返し転写記録において、
印字品質の劣化のない鮮明な印字記録を再現性良
く得ることを可能にしたものである。[Detailed Description of the Invention] [Summary] The present invention provides a method for reducing the amount of damage that occurs on the surface of the ink layer of the thermal transfer ink sheet after transfer during thermal recording of printing using a thermal transfer recording device or facsimile machine that uses a thermal transfer ink sheet that can be repeatedly transferred. In order to prevent the rough surface pattern from being transferred as a stain onto the recording paper by sliding the rough surface pattern in the form of a transfer residual image while being pressed by the thermal head, the heat-melting property of the thermal transfer ink sheet is By using a wax-like compound with urethane bonds and fatty acid amide wax as the low-melting point wax material constituting the ink layer, the hardness of the rough surface that occurs in the ink layer after transfer is made firm at room temperature, and the roughness is improved. Eliminates the problem of surface patterns being transferred to recording paper as afterimage-shaped stains or background smudges, and in repeated transfer recording,
This makes it possible to obtain clear print records with good reproducibility without deterioration in print quality.
本発明はサーマルヘツドを用いた熱転写記録装
置、或いはフアクシミリ等に適用される熱転写イ
ンクシートに係り、特に繰り返し転写可能な熱転
写インクシートの改良に関するものである。
The present invention relates to a thermal transfer ink sheet that is applied to a thermal transfer recording device using a thermal head or a facsimile machine, and particularly relates to an improvement of a thermal transfer ink sheet that can be repeatedly transferred.
サーマルプリンタやフアクシミリの記録方式の
一つに熱転写記録方式がある。これはプラテン等
にガイドされた普通紙、例えば通常用いられてい
る上質紙等の記録紙上に、熱溶融性インク層を設
けた構成の熱転写インクシートを介してサーマル
ヘツドを押圧し、この状態のサーマルヘツドの複
数の発熱部を印字情報に基づいて選択的に発熱さ
せ、熱溶融性インクを記録紙に転写して記録を行
うものである。 One of the recording methods for thermal printers and facsimiles is the thermal transfer recording method. This is done by pressing a thermal head through a thermal transfer ink sheet with a heat-melting ink layer on plain paper, such as commonly used high-quality paper, which is guided by a platen or the like. A plurality of heat generating parts of a thermal head are selectively made to generate heat based on print information, and heat-melting ink is transferred onto recording paper to perform recording.
上記した熱転写インクシートは、一般的には一
回の転写記録で記録に供したインク層部分が抜け
てしまい、多数回の使用ができないワンタイムタ
イプの熱転写インクシートが広く用いられている
が、記録を得るためのコストが高くなり、記録後
の不要となつた熱転写インクシートの処分も問題
となることから、近来、多数回繰り返して使用可
能な熱転写インクシートが開発され、種々の構成
のものが提案されている。 The thermal transfer ink sheets described above are widely used as one-time type thermal transfer ink sheets, which cannot be used multiple times because the ink layer used for recording is generally removed after one transfer recording. As the cost of obtaining records increases and the disposal of unnecessary thermal transfer ink sheets after recording becomes a problem, recently thermal transfer ink sheets that can be used repeatedly have been developed, and they are available in various configurations. is proposed.
このような多数回繰り返して使用可能とする熱
転写インクシートは、長期間の使用が可能となる
利点を有する反面、転写記録後のインク層表面が
転写残像状の粗面パターンとなることは否めず、
その粗面部分上を、押圧したサーマルヘツドが唯
単に摺動するだけで記録紙上に粗面パターンが汚
れとして転写する現象があり、このような現象は
鮮明な転写記録を実現するうえで排除することが
必要である。 Such thermal transfer ink sheets that can be used repeatedly have the advantage of being able to be used for a long period of time, but on the other hand, it is undeniable that the surface of the ink layer after transfer recording becomes a rough pattern like a transfer image. ,
There is a phenomenon in which the rough surface pattern is transferred as dirt onto the recording paper simply by sliding the pressed thermal head over the rough surface, and this phenomenon must be eliminated in order to achieve clear transfer recording. It is necessary.
従来の繰り返し転写可能な熱転写インクシート
の構造は第３図に示すように、例えばポリエステ
ルフイルム等からなる基材１上にポリエステル樹
脂などからなる中間接着層２を介して、着色剤と
してカヤセツトブラツク（日本化薬製）からなる
染料を１重量部と、低融点ワツクス材として脂肪
酸アミドワツクス（日本油脂社製）を２重量部及
びパラフインワツクスを１重量部とを混合し、更
に充填材として凝集性に優れたカーボンブラツク
からなる微粉末の0.8重量部とをアセトン等によ
り混合・分散させた熱溶融性インク層３を設けた
構造からなつている。
As shown in FIG. 3, the structure of a conventional thermal transfer ink sheet that can be repeatedly transferred is as follows. (manufactured by Nippon Kayaku), 2 parts by weight of fatty acid amide wax (manufactured by NOF Corporation) as a low melting point wax material, and 1 part by weight of paraffin wax are mixed, and further aggregated as a filler. It has a structure in which a heat-melting ink layer 3 is formed by mixing and dispersing 0.8 parts by weight of fine powder made of carbon black with excellent properties using acetone or the like.
なお、上記カーボンブラツクからなる微粉末
は、この場合黒色顔料として用いるものではな
く、この微粉末の混合・分散により前記基材１上
の着色剤と低融点ワツクス材からなるインク組成
物質が多孔質なスポンジ状構造体に形成され、熱
によつて粘度の低下したインク組成物質を僅かづ
つインク層３表面に滲出させる媒体の役割を果た
している。 Note that the fine powder made of carbon black is not used as a black pigment in this case, but by mixing and dispersing this fine powder, the ink composition material made of the colorant and low melting point wax material on the base material 1 becomes porous. It is formed into a sponge-like structure and serves as a medium that causes the ink composition material whose viscosity has been reduced by heat to ooze out onto the surface of the ink layer 3 little by little.
そして記録紙上に上記熱転写インクシートのイ
ンク層３表面を重ね合わせた状態で、その基材１
面にサーマルヘツドを押圧し、該サーマルヘツド
の複数の発熱部を印字情報に基づいて選択的に発
熱させることにより、インク層３内のインク組成
物質が選択的に加熱溶融されて、該インク層３表
面に適量滲出し、この滲出したインク組成物質の
みが記録紙に転写され、繰り返し再現性良く転写
記録を行うことを可能としている。 Then, with the surface of the ink layer 3 of the thermal transfer ink sheet superimposed on the recording paper, the base material 1
By pressing a thermal head against the surface and selectively generating heat from a plurality of heat generating parts of the thermal head based on the printed information, the ink composition material in the ink layer 3 is selectively heated and melted, and the ink layer 3 is heated and melted. 3, and only this exuded ink composition material is transferred to the recording paper, making it possible to repeatedly perform transfer recording with good reproducibility.
ところで、このような従来の熱転写インクシー
トでは、繰り返し使用時における転写後の熱転写
インクシートのインク層３表面が転写残像跡を有
するパターン状に粗面化され、その粗面部分上を
サーマルヘツドが押圧した状態で唯単に摺動する
だけで記録紙上に前記粗面パターンが残像の形の
汚れとして転写され、印字品質を悪化させる欠点
がある。
By the way, in such a conventional thermal transfer ink sheet, the surface of the ink layer 3 of the thermal transfer ink sheet after transfer during repeated use is roughened in a pattern with transfer residual image marks, and the thermal head is moved over the rough surface portion. Simply sliding under pressure causes the rough surface pattern to be transferred onto the recording paper as a stain in the form of an afterimage, which has the drawback of deteriorating print quality.
この現象は前記インク層３を構成する低融点ワ
ツクス材の硬さが、常温で比較的軟らかく、イン
ク層の粗面パターンにおける突起部分が脆いとい
う材質に起因している。 This phenomenon is due to the fact that the hardness of the low melting point wax material constituting the ink layer 3 is relatively soft at room temperature, and the protrusions in the rough surface pattern of the ink layer are brittle.
一方、印字の滲みをなくすために、該インク層
のバインダとして分子内に−NHCO−なる原子
団を有する化合物であるウレタンワツクスを用い
たワンタイム転写記録タイプの感熱転写シートが
特開昭58−199195号公報により提案されている。 On the other hand, in order to eliminate blurring of printed characters, a one-time transfer recording type heat-sensitive transfer sheet using urethane wax, a compound having an -NHCO- atomic group in its molecules, was developed as a binder for the ink layer. - It is proposed by Publication No. 199195.
かかるウレタンワツクスを熱溶融性インク層を
構成する低融点ワツクス材として適用した場合、
皮報形成能に優れ、常温での硬度が高く粘着性が
低いので、転写後のインク層表面による記録紙へ
の転写汚れがなく、また転写後のインク層表面に
転写残像状の粗面が例え生じても記録紙への転写
汚れが発生し難いが、一方、転写記録時の溶融粘
度が高く粘着性も高いので均質な転写が得られ
ず、また転写濃度が薄いため記録品質が低下する
という欠点があつた。 When such urethane wax is applied as a low melting point wax material constituting the heat-melting ink layer,
It has excellent report forming ability, high hardness at room temperature, and low adhesiveness, so there is no transfer stain on the recording paper due to the surface of the ink layer after transfer, and there is no rough surface like a transfer residual image on the surface of the ink layer after transfer. Even if it occurs, transfer stains on the recording paper are unlikely to occur, but on the other hand, the melt viscosity during transfer recording is high and the adhesiveness is high, making it difficult to obtain homogeneous transfer, and the recording quality deteriorates due to the low transfer density. There was a drawback.
本発明はこのような従来の欠点に鑑み、多数回
の転写記録を繰り返しても、記録紙上の印字記録
に汚れがなく、常に鮮明な印字記録が得られる新
規な熱転写インクシートを提供することを目的と
するものである。 In view of these conventional drawbacks, the present invention aims to provide a new thermal transfer ink sheet that does not stain the printed records on the recording paper and always provides clear printed records even if transfer recording is repeated many times. This is the purpose.
本発明は上記目的を達成するため、第１図に示
すようにポリエステルフイルムからなる基材２１
上に、ポリエステル樹脂とポリアミド樹脂とから
なる中間接着層２２を介して、着色剤としてカヤ
セツトブラツクからなる染料を１重量部、低融点
ワツクス材として分子内にウレタン結合の−
NHCO−なる原子団を有するワツクス状化合物
であるウレタンワツクスの２重量部とワツクス状
脂肪酸アミドを0.1〜１重量部及びパラフインワ
ツクスの１重量部と、更に充填材として凝集性に
優れたカーボンブラツクからなる微粉末の0.5重
量部とをアセトン等の溶剤により混合・分散させ
た熱溶融性インク層２３を設けた繰り返し転写可
能な熱転写インクシートを構成する。
In order to achieve the above object, the present invention has a base material 21 made of polyester film as shown in FIG.
On top of this, 1 part by weight of a dye made of Kayaset Black as a coloring agent and - of urethane bond in the molecule as a low melting point wax material are applied via an intermediate adhesive layer 22 made of a polyester resin and a polyamide resin.
2 parts by weight of urethane wax, which is a wax-like compound having an atomic group called NHCO-, 0.1 to 1 part by weight of wax-like fatty acid amide, 1 part by weight of paraffin wax, and carbon with excellent cohesion as a filler. A thermal transfer ink sheet that can be repeatedly transferred is provided with a heat-melting ink layer 23 made by mixing and dispersing 0.5 parts by weight of a fine powder of black using a solvent such as acetone.
本発明の熱転写インクシートとしては、均質な
転写を得るためには、着色剤を含む低融点ワツク
ス材が良好な粘着性で、かつ溶融状態において充
填材の〓間から熱溶融性インク層の表面に効率良
く滲み出させるために低溶融粘度であり、更に転
写後の熱溶融性インク層表面の粗面化をなくし、
強固に固化する皮膜形成能が要求される。
In order to obtain homogeneous transfer in the thermal transfer ink sheet of the present invention, it is necessary that the low melting point wax material containing the colorant has good adhesion and that in the molten state, it should be able to penetrate between the filler and the surface of the hot melt ink layer. It has a low melt viscosity for efficient oozing, and also eliminates roughening of the surface of the hot-melt ink layer after transfer.
The ability to form a film that solidifies strongly is required.
そこで本発明では、天然ワツクスや合成ワツク
スと同様な熱溶融性を有し、粘着性が良好で固化
時の皮膜形成能に優れた分子内にウレタン結合の
−NHCO−なる原子団を有するワツクス状化合
物、即ちイソシアネート化合物とアルコール類、
アミン類、チオール類、カルボン酸類の内の何れ
か一種との反応生成物で、特に分子量が100〜
1000のウレタンワツクスと、ステアリン酸ベンズ
アミド、ベヘン酸アミド等を主成分とするワツク
ス状の脂肪酸アミドとを重量比で混合することに
より、該混合ワツクス材を溶融した際の融点が共
融点効果により低下し、かつ溶融粘度も低くな
る、また常温で強固に固化する現象を見出した。 Therefore, in the present invention, we developed a wax-like wax that has -NHCO- atomic group of urethane bond in the molecule, which has heat melting properties similar to natural wax and synthetic wax, has good adhesiveness, and has excellent film-forming ability when solidified. compounds, namely isocyanate compounds and alcohols,
A reaction product with any one of amines, thiols, and carboxylic acids, especially those with a molecular weight of 100~
By mixing 1000 urethane wax and wax-like fatty acid amide whose main components are stearic acid benzamide, behenic acid amide, etc. in a weight ratio, the melting point when the mixed wax material is melted is lowered due to the eutectic point effect. We have found that the melt viscosity decreases and the melt viscosity also decreases, and that it solidifies strongly at room temperature.
従つて、この現象に着目して上記した混合ワツ
クス材を、繰り返し転写可能な熱転写インクシー
トにおける熱溶融性インク層を着色剤及び充填材
と共に構成する低融点ワツクス材として適用し、
かかる熱転写インクシートリボン状にしてシリア
ル熱転写プリンタに装着し、記録紙上に該熱転写
インクシートを介してサーマルヘツドを押圧した
状態で、印字パルス幅を１ｍｓ、印字エネルギー
を30ｍＪ／mm2として繰り返し転写記録を行つたと
ころ、良好な印字濃度で転写され、また転写後の
インク層表面の転写跡が粗面となり難く、かつ粗
面となつても強固に固化されるので転写汚れや地
汚れのない鮮明な印字記録を再現性よく繰り返し
得ることができる。 Therefore, focusing on this phenomenon, the above-mentioned mixed wax material is applied as a low melting point wax material that constitutes the heat-melting ink layer in a heat transfer ink sheet that can be repeatedly transferred, together with a colorant and a filler,
The thermal transfer ink sheet is shaped into a ribbon and attached to a serial thermal transfer printer, and while the thermal head is pressed onto the recording paper through the thermal transfer ink sheet, transfer recording is repeatedly performed with a printing pulse width of 1 ms and a printing energy of 30 mJ/mm 2 . When this process was performed, the print was transferred with good density, and the transfer traces on the surface of the ink layer after transfer were unlikely to become rough, and even if the surface was rough, it was firmly solidified, so the transfer was clear with no stains or background stains. It is possible to repeatedly obtain a print record with good reproducibility.
以下図面を用いて本発明の実施例について詳細
に説明する。
Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明に係る繰り返し転写可能な熱転
写インクシートの一実施例を説明するための要部
断面図である。 FIG. 1 is a sectional view of a main part for explaining an embodiment of a thermal transfer ink sheet that can be repeatedly transferred according to the present invention.
図において、２１は厚さが6μｍのポリエステ
ルフイルムからなる基材であり、該基材２１上
に、ポリエステル樹脂とポリアミド樹脂とからな
る中間接着層２２を3μｍの厚さに設ける。 In the figure, 21 is a base material made of a polyester film having a thickness of 6 μm, and an intermediate adhesive layer 22 made of a polyester resin and a polyamide resin is provided on the base material 21 to have a thickness of 3 μm.
またその中間接着層２２上に、例えば着色剤と
してカヤセツトブラツクKR（日本化薬社製）か
らなる染料の1.0重量部と、低融点ワツクス材と
してヘキサメチレンジイソシアネートとエチルア
ルコールとの反応生成物で分子内にウレタン結合
の−NHCO−なる原子団を有するワツクス状化
合物である、アルフローDH−20（日本油脂社製）
からなる接着性の強い皮膜形成能の優れたウレタ
ンワツクスの２重量部と、前記ウレタンワツクス
を低溶融粘度化するステアリン酸ベンズアミドを
主成分とするワツクス状脂肪酸アミド（AS−20、
日本油脂社製）の0.1〜1.0重量部及びパラフイン
ワツクス（SP0145、日本精蝋社製）の1.0重量部
と、更に充填材として凝集性に優れたトーカブラ
ツク＃7550（東海カーボン社製）からなる微粉末
の0.8重量部とをアセトン等の溶剤により混合・
分散させた熱溶融性インク層２３を10μｍの厚さ
に設けた繰り返し転写可能な熱転写インクシート
を構成する。 Further, on the intermediate adhesive layer 22, for example, 1.0 parts by weight of a dye made of Kayaset Black KR (manufactured by Nippon Kayaku Co., Ltd.) as a coloring agent and a reaction product of hexamethylene diisocyanate and ethyl alcohol as a low melting point wax material. Alflo DH-20 (manufactured by NOF Corporation) is a wax-like compound that has a -NHCO- atomic group with a urethane bond in its molecule.
2 parts by weight of a urethane wax with excellent film-forming ability with strong adhesive properties, and a wax-like fatty acid amide (AS-20,
0.1 to 1.0 parts by weight of Paraffin Wax (SP0145, manufactured by Nippon Seiro Co., Ltd.) and 1.0 parts by weight of paraffin wax (SP0145, manufactured by Nippon Seiro Co., Ltd.), and Toka Black #7550 (manufactured by Tokai Carbon Co., Ltd.), which has excellent cohesive properties as a filler. Mix 0.8 parts by weight of fine powder with a solvent such as acetone.
A thermal transfer ink sheet that can be repeatedly transferred is constituted by providing a dispersed heat-melting ink layer 23 with a thickness of 10 μm.
しかして、かかる熱転写インクシートをリボン
状にして、例えばシリアル熱転写プリンタにおけ
る記録紙上に装着し、当該熱転写インクリボン上
にサーマルヘツドを押圧した状態で、印字エネル
ギーを30ｍＪ／mm2、印字パルス幅を１ｍｓとして
繰り返し転写記録を行つた結果、該熱転写インク
リボンのインク層２３を構成する低融点ワツクス
材が、粘着性の強いウレタンワツクスとワツクス
状の脂肪酸アミドとの混合ワツクスから成るた
め、転写時の溶融粘度が低くなるので、カーボン
ブラツクからなる充填材の〓間から前記インク層
２３の表面に効率良く滲み出し、良好な印字濃度
で転写され、また転写後のインク層表面の転写跡
が皮膜形成能により粗面となり難く、かつ粗面と
なつても強固に固化されるので転写汚れや地汚れ
のない鮮明な印字記録を再現性良く繰り返し得る
ことが可能となる。更に比較的、紙面の粗い記録
紙に対しても同様に転写汚れのない鮮明な印字記
録を繰り返し転写することが可能となる。 The thermal transfer ink sheet is shaped into a ribbon and mounted on recording paper in a serial thermal transfer printer, for example, and with a thermal head pressed onto the thermal transfer ink ribbon, the printing energy is set to 30 mJ/mm 2 and the printing pulse width is set to 30 mJ/mm 2 . As a result of repeating transfer recording at 1 ms, the low melting point wax material constituting the ink layer 23 of the thermal transfer ink ribbon is composed of a mixed wax of highly adhesive urethane wax and waxy fatty acid amide. Since the melt viscosity of the carbon black filler becomes low, it oozes out efficiently from between the gaps between the fillers made of carbon black onto the surface of the ink layer 23, and is transferred with a good print density, and the transfer traces on the surface of the ink layer after transfer are removed from the film. Because of its forming ability, it is difficult to form a rough surface, and even if it becomes a rough surface, it is firmly solidified, making it possible to repeatedly obtain clear print records with good reproducibility without transfer stains or background stains. Furthermore, it is possible to repeatedly transfer clear print records without transfer stains even to recording paper with a relatively rough surface.
なお、第２図は上記実施例による熱転写インク
リボンのインク層を構成する低融点ワツクス材に
おけるウレタンワツクスに対する脂肪酸アミドワ
ツクスの配合重量比を０〜0.6に変化した場合の
転写濃度（Optical Density）との関係を示す。 In addition, FIG. 2 shows the transfer density (optical density) when the blending weight ratio of fatty acid amide wax to urethane wax in the low melting point wax material constituting the ink layer of the thermal transfer ink ribbon according to the above example was changed from 0 to 0.6. shows the relationship between
ウレタンワツクスは粘着性が強く常温での硬度
が高く皮膜形成能に優れているため、図示のよう
にワツクス状脂肪酸アミドと混合しない場合に
は、転写後の記録紙に対する転写汚れは生じ難い
が、転写時の溶融粘度が高いので、転写の均質性
が悪く転写濃度が低下する。 Urethane wax has strong adhesiveness, high hardness at room temperature, and excellent film-forming ability, so if it is not mixed with waxy fatty acid amide as shown in the figure, transfer stains on the recording paper after transfer are unlikely to occur. Since the melt viscosity during transfer is high, the uniformity of transfer is poor and the transfer density is reduced.
またウレタンワツクスに対するワツクス状脂肪
酸アミドの配合重量比を0.1から1.5と変化させて
いくと、この混合ワツクスの溶融粘度が低下する
方向に調整され、均質な転写により転写濃度も増
加し、しかも転写後の記録紙面に対する転写汚れ
のない鮮明な転写記録像が得られる。 Furthermore, by changing the blending weight ratio of waxy fatty acid amide to urethane wax from 0.1 to 1.5, the melt viscosity of this mixed wax is adjusted to decrease, and the transfer density increases due to homogeneous transfer. A clear transferred recorded image without transfer stains on the subsequent recording paper surface can be obtained.
更にウレタンワツクスに対するワツクス状脂肪
酸アミドの配合重量比を増加する、転写転写濃度
は減少する傾向となり、前記配合重量比が0.6程
度になると転写後の記録紙面に対する転写汚れが
発生するようになることが確認できた。 Furthermore, as the blending weight ratio of waxy fatty acid amide to urethane wax increases, the transfer density tends to decrease, and when the blending weight ratio becomes about 0.6, transfer stains will occur on the recording paper surface after transfer. was confirmed.
以上の説明から明らかなように、本発明に係る
繰り返し転写可能な熱転写インクシートによれ
ば、該熱転写インクリボンのインク層を構成する
低融点ワツクス材が、ウレタンワツクスと脂肪酸
アミドワツクスとの混合により常温で従来のもの
よりもかたくなり、粘着力も低くなるため、繰り
返し転写記録時に、該インク層の表面が粗面にな
つても、該粗面パターンが残像の形の汚れや地汚
れとして記録紙に転写されることが解消し、鮮明
で印字濃度の良好な印字記録を再現性よく繰り返
し転写することができる優れた利点を有する。
As is clear from the above description, according to the repeatable transferable thermal transfer ink sheet according to the present invention, the low melting point wax material constituting the ink layer of the thermal transfer ink ribbon is formed by mixing urethane wax and fatty acid amide wax. It becomes harder and has lower adhesive strength than conventional ink layers at room temperature, so even if the surface of the ink layer becomes rough during repeated transfer recording, the rough surface pattern will remain on the recording paper as stains in the form of afterimages or background stains. It has the excellent advantage of being able to eliminate the problem of image transfer, and to repeatedly transfer clear print records with good print density with good reproducibility.
従つて、サーマルプリンタ、或いはフアクシミ
リ等に用いられる繰り返し転写可能な熱転写イン
クシート、またはインクリボンに適用して極めて
有利であり、実用上優れた効果を奏する。 Therefore, it is extremely advantageous to apply it to thermal transfer ink sheets or ink ribbons capable of repeated transfer used in thermal printers, facsimile machines, etc., and produces excellent practical effects.
第１図は本発明に係る熱転写インクシートの一
実施例を説明するための要部断面図。第２図は熱
溶融性インク層を構成する低融点ワツクス材中の
ウレタンワツクスに対する脂肪酸アミドワツクス
の配合重量比と転写濃度との関係を示す図。第３
図は従来の熱転写インクシートを説明するための
要部断面図である。
第１図において、２１は基材、２２は中間接着
層、２３は熱溶融性インク層をそれぞれ示す。
FIG. 1 is a sectional view of essential parts for explaining an embodiment of a thermal transfer ink sheet according to the present invention. FIG. 2 is a diagram showing the relationship between the blending weight ratio of fatty acid amide wax to urethane wax in the low melting point wax material constituting the heat-melting ink layer and the transfer density. Third
The figure is a sectional view of essential parts for explaining a conventional thermal transfer ink sheet. In FIG. 1, 21 is a base material, 22 is an intermediate adhesive layer, and 23 is a heat-melting ink layer.
Claims (1)
と低融点ワツクス材及び充填材とからなる熱溶融
性インク層２３を設けて成る繰り返し転写可能な
熱転写インクシートにおいて、 上記熱溶融性インク層２３を構成する低融点ワ
ツクス材が、少なくともウレタン結合を有するワ
ツクス状化合物とワツクス状脂肪酸アミドとから
なることを特徴とする熱転写インクシート。 ２ 上記ウレタン結合を有するワツクス状化合物
に対するワツクス状脂肪酸アミドの混合比が５〜
50重量％であることを特徴とする請求項１記載の
熱転写インクシート。[Claims] 1. A thermal transfer ink sheet capable of repeated transfer, comprising a heat-melting ink layer 23 made of a colorant, a low-melting wax material, and a filler provided on a base material 21 via an intermediate adhesive layer 22. . A thermal transfer ink sheet, wherein the low melting point wax material constituting the heat-melting ink layer 23 comprises at least a wax-like compound having a urethane bond and a wax-like fatty acid amide. 2 The mixing ratio of the waxy fatty acid amide to the waxy compound having the urethane bond is 5 to 5.
The thermal transfer ink sheet according to claim 1, characterized in that the amount is 50% by weight.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60286355A JPS62144996A (en) | 1985-12-18 | 1985-12-18 | Thermal transfer ink sheet |
| KR1019860010641A KR920001485B1 (en) | 1985-12-18 | 1986-12-12 | Inksheet pepeatedly usable in thermal recording |
| EP86117680A EP0260347B1 (en) | 1985-12-18 | 1986-12-18 | Ink sheet repeatedly usable in thermal recording |
| DE8686117680T DE3685754T2 (en) | 1985-12-18 | 1986-12-18 | REUSABLE DYE-CONTAINING LAYER FOR THERMAL TRANSFER PRINT. |
| US07/952,193 US5227246A (en) | 1985-12-18 | 1992-09-28 | Ink sheet usable in thermal recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60286355A JPS62144996A (en) | 1985-12-18 | 1985-12-18 | Thermal transfer ink sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62144996A JPS62144996A (en) | 1987-06-29 |
| JPH0251395B2 true JPH0251395B2 (en) | 1990-11-07 |
Family
ID=17703302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60286355A Granted JPS62144996A (en) | 1985-12-18 | 1985-12-18 | Thermal transfer ink sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62144996A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227246A (en) * | 1985-12-18 | 1993-07-13 | Fujitsu Limited | Ink sheet usable in thermal recording |
| KR920001485B1 (en) * | 1985-12-18 | 1992-02-15 | 후지쓰 가부시끼가이샤 | Inksheet pepeatedly usable in thermal recording |
| JPS6447588A (en) * | 1987-08-18 | 1989-02-22 | Mitsubishi Chem Ind | Thermal transfer recording medium |
| JPH01118484A (en) * | 1987-10-30 | 1989-05-10 | Mitsubishi Kasei Corp | Heat-sensitive transfer recording medium |
| JPH06104387B2 (en) * | 1988-09-29 | 1994-12-21 | 株式会社巴川製紙所 | Thermal transfer recording medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199195A (en) * | 1982-05-17 | 1983-11-19 | Dainippon Printing Co Ltd | Heat sensitive transfer sheet |
| JPS60234888A (en) * | 1984-05-09 | 1985-11-21 | Konishiroku Photo Ind Co Ltd | Thermal transfer recording medium |
| JPS61212393A (en) * | 1985-03-15 | 1986-09-20 | Hitachi Ltd | Method for controlling oxidation ditch |
-
1985
- 1985-12-18 JP JP60286355A patent/JPS62144996A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199195A (en) * | 1982-05-17 | 1983-11-19 | Dainippon Printing Co Ltd | Heat sensitive transfer sheet |
| JPS60234888A (en) * | 1984-05-09 | 1985-11-21 | Konishiroku Photo Ind Co Ltd | Thermal transfer recording medium |
| JPS61212393A (en) * | 1985-03-15 | 1986-09-20 | Hitachi Ltd | Method for controlling oxidation ditch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62144996A (en) | 1987-06-29 |
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