JPH0238469A - Ink composition and its production - Google Patents
Ink composition and its productionInfo
- Publication number
- JPH0238469A JPH0238469A JP63188235A JP18823588A JPH0238469A JP H0238469 A JPH0238469 A JP H0238469A JP 63188235 A JP63188235 A JP 63188235A JP 18823588 A JP18823588 A JP 18823588A JP H0238469 A JPH0238469 A JP H0238469A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- wax
- particles
- pigment
- thermal transfer
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 46
- 239000002245 particle Substances 0.000 claims abstract description 44
- 239000000049 pigment Substances 0.000 claims abstract description 32
- 239000006185 dispersion Substances 0.000 claims abstract description 13
- 239000012736 aqueous medium Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000003960 organic solvent Substances 0.000 claims abstract description 4
- 239000001993 wax Substances 0.000 claims description 36
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 41
- 239000010410 layer Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 19
- 238000002844 melting Methods 0.000 description 13
- 239000000839 emulsion Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- -1 polyethylenes Polymers 0.000 description 10
- 238000001035 drying Methods 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000012188 paraffin wax Substances 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229940081735 acetylcellulose Drugs 0.000 description 2
- 239000004203 carnauba wax Substances 0.000 description 2
- 235000013869 carnauba wax Nutrition 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920006015 heat resistant resin Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000088 plastic resin Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000010023 transfer printing Methods 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000004163 Spermaceti wax Substances 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004204 candelilla wax Substances 0.000 description 1
- 235000013868 candelilla wax Nutrition 0.000 description 1
- 229940073532 candelilla wax Drugs 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 238000007757 hot melt coating Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene 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
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012176 shellac wax Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 235000019385 spermaceti wax Nutrition 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000007651 thermal printing Methods 0.000 description 1
- 230000008542 thermal sensitivity Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は熱転写シート用インキ組成物に関し、製造が容
易で高品質の転写画像を与える熱転写シートの製造に有
用なインキ組成物及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an ink composition for thermal transfer sheets, and relates to an ink composition useful for manufacturing thermal transfer sheets that are easy to manufacture and provide high-quality transferred images, and a method for manufacturing the same. Regarding.
（従来の技術及びその問題点）
従来、コンピューターやワードプロセッサーの出カブリ
ントを熱転写方式によって印字する場合には、基材フィ
ルムの一方の面に熱溶融性インキ層を設けた熱転写シー
トが使用されている。(Prior art and its problems) Conventionally, when printing output prints from computers or word processors using a thermal transfer method, a thermal transfer sheet with a heat-melting ink layer provided on one side of a base film has been used. .
この従来の熱転写シートは、基材フィルムとして厚さ１
０乃至２０μｍのコンデンサ紙やパラフィン紙のような
紙或いは厚さ３乃至２０μｍのポリエステルやセロファ
ンのようなプラスチックのフィルムを用い、ワックスに
顔料や染料等の着色剤を混合した熱溶融性インキ層をコ
ーティングにより設けて製造したものである。This conventional thermal transfer sheet has a thickness of 1 mm as a base film.
Using paper such as capacitor paper or paraffin paper with a thickness of 0 to 20 μm, or a plastic film such as polyester or cellophane with a thickness of 3 to 20 μm, a layer of heat-melting ink made by mixing coloring agents such as pigments and dyes with wax is applied. It is manufactured by coating.
以上の様な熱転写シートは基材フィルム上に、ワックス
、及び顔料を含む溶融液をホットメルトコートにより形
成しているが、この方法ては塗工時に比較的高い温度を
要求される為、種々の問題が有った。これらの問題を解
決する方法としてワックスの水性エマルジョンと顔料の
水性分散体を混合してエマルジョンインキを作製し、こ
れを通常の方法で塗布及び乾燥する方法が提案されてい
る。Thermal transfer sheets as described above are formed by hot-melt coating a molten liquid containing wax and pigments on a base film, but this method requires a relatively high temperature during coating, so there are various There was a problem. As a method for solving these problems, a method has been proposed in which an aqueous wax emulsion and an aqueous pigment dispersion are mixed to prepare an emulsion ink, which is then applied and dried in a conventional manner.
このエマルジョンインキ方法においては、塗工後乾燥温
度を比較的低温にするとインキ層はエマルジョン粒子の
集合体として形成される結果、熱転写時にはインキ切れ
が良くなり、解像性が向上するが、一方ではインキ層の
剥落の問題、乾燥不均一による転写印字の白抜けの問題
、顔料が表面にもむき出しのまま存在する結果、転写時
に被転写材とのこすれにより、被転写材の地汚れ等の問
題、更には被転写材に対する接着不良等の問題が発生す
る。In this emulsion ink method, when the drying temperature after coating is set to a relatively low temperature, the ink layer is formed as an aggregate of emulsion particles, which results in better ink removal during thermal transfer and improved resolution. Problems with peeling of the ink layer, problems with white spots in transfer printing due to uneven drying, problems such as background stains on the transfer material due to the pigment being exposed on the surface and rubbing against the transfer material during transfer, Furthermore, problems such as poor adhesion to the transfer material occur.
上記接着性の問題はワックス中に接着性の良い熱可塑性
樹脂を併用し、且つインキ層の乾燥時の温度を高めて均
一層とすることにより成る程度解決されるが、逆に接着
性樹脂の存在によって転写時のインキ層の膜切れ性（印
字文字等のシャープさ）が低下するという問題が生じる
。The above adhesion problem can be solved to some extent by using a thermoplastic resin with good adhesion in the wax and increasing the drying temperature of the ink layer to form a uniform layer. The presence of such particles causes a problem in that the film cutting properties of the ink layer during transfer (sharpness of printed characters, etc.) are reduced.
従って本発明の目的は、上記の如き問題を解決した熱転
写シートを与えるインキ組成物を提供することである。Therefore, an object of the present invention is to provide an ink composition that provides a thermal transfer sheet that solves the above-mentioned problems.
（問題点を解決するための手段） 上記目的は以下の本発明によって達成される。(Means for solving problems) The above objects are achieved by the present invention as described below.
すなわち、本発明は、ワックス、顔料及び熱可塑性樹脂
を一体化した粒子及び熱可塑性樹脂の粒子を水性媒体中
に分散させたことを特徴とする熱転写シートのインキ層
形成用インキ組成物及びワックス、顔料及び熱可塑性樹
脂を一旦溶融混合又は親水性有機溶剤中で溶解混合後、
水性媒体中に分散させ、更に熱可塑性樹脂の水性分散液
と混合することを特徴とする熱転写シートのインキ層形
成用インキ組成物の製造方法である。That is, the present invention provides an ink composition and wax for forming an ink layer of a thermal transfer sheet, characterized in that particles in which wax, pigment, and thermoplastic resin are integrated and particles of thermoplastic resin are dispersed in an aqueous medium; Once the pigment and thermoplastic resin are melt-mixed or dissolved and mixed in a hydrophilic organic solvent,
This is a method for producing an ink composition for forming an ink layer of a thermal transfer sheet, which comprises dispersing the composition in an aqueous medium and further mixing it with an aqueous dispersion of a thermoplastic resin.
（作 用）
ワックス、顔料及び熱可塑性樹脂を一旦均一に混合して
水中に分散させることにより、顔料粒子はワックス及び
熱可塑性樹脂によって被覆された状態になるのて、転写
時に被転写材との摩擦によっても地汚れの発生が少ない
。(Function) By uniformly mixing the wax, pigment and thermoplastic resin and dispersing them in water, the pigment particles are coated with the wax and thermoplastic resin, so that they do not interact with the material to be transferred during transfer. There is little scuffing caused by friction.
又、ベヒクルの１成分として接着性の良好な熱可塑性樹
脂を含有しているので基材フィルムに対する接着性が向
上して箔落ちの問題が生じない。Furthermore, since the vehicle contains a thermoplastic resin with good adhesiveness as one component, the adhesiveness to the base film is improved and the problem of foil falling does not occur.
又、同様な理由で被転写材に対する接着性も向上し、白
抜は文字等も発生しない。Furthermore, for the same reason, the adhesion to the transfer material is improved, and no characters or the like are generated in the white areas.
更にインキ層の乾燥温度をワックスと熱可塑性樹脂との
混合物の融点以上で且つ熱可塑性樹脂粒子の融点以下の
温度とすることにより、インキ層はワックスと熱可塑性
樹脂とからなる均一層中に熱可塑性樹脂の粒子が分散し
た状態になり、完全に相溶した層に比ベインキ層の膜強
度が低下して熱転写時の膜切れ性が向上し、シャープで
解像性の高い印字が可能となる。Furthermore, by setting the drying temperature of the ink layer to a temperature higher than the melting point of the mixture of wax and thermoplastic resin and lower than the melting point of the thermoplastic resin particles, the ink layer is heated in a uniform layer consisting of wax and thermoplastic resin. The plastic resin particles become dispersed, and the film strength of the baked ink layer decreases compared to the completely compatible layer, which improves the film tearability during thermal transfer and enables sharp, high-resolution printing. .
（好ましい実施態様）
次に好ましい実施態様により本発明を更に詳しく説明す
る。(Preferred Embodiments) Next, the present invention will be explained in more detail with reference to preferred embodiments.
本発明のインキ組成物はワックス、顔料、熱可塑性樹脂
及び水性媒体を主要成分として構成され、ワックス、顔
料及び熱可塑性樹脂が一体化された粒子の状態で水性媒
体中に分散し、更にその中に熱可塑性樹脂の粒子が分散
していることを特徴とする。The ink composition of the present invention is composed of a wax, a pigment, a thermoplastic resin, and an aqueous medium as main components, and the wax, the pigment, and the thermoplastic resin are dispersed in the aqueous medium in the form of integrated particles. It is characterized by having thermoplastic resin particles dispersed in it.
本発明において使用するワックスは、熱転写シートのイ
ンキ層のベヒクルの主成分となるものであり、ワックス
の代表例としては、マイクロクリスタリンワックス、カ
ルナバワックス、パラフィンワックス等がある。更に、
フィッシャートロプシュワックス、各種低分子量ポリエ
チレン、木ロウ、ミツロウ、鯨ロウ、イポタロウ、羊毛
ロウ、セラックワックス、キャンデリラワックス、ペト
ロラクタム、ポリエステルワックス、−都度性ワックス
、脂肪酸エステル、脂肪酸アミド等種々のワックスが挙
げられる。The wax used in the present invention is a main component of the vehicle of the ink layer of the thermal transfer sheet, and representative examples of the wax include microcrystalline wax, carnauba wax, paraffin wax, and the like. Furthermore,
Various waxes such as Fischer-Tropsch wax, various low molecular weight polyethylenes, wood wax, beeswax, spermaceti wax, ipotal wax, wool wax, shellac wax, candelilla wax, petrolactam, polyester wax, assorted waxes, fatty acid esters, fatty acid amides, etc. Can be mentioned.
又、本発明で使用する顔料は、カーボンブラシりを代表
例とする黒色顔料が大部分使用されるが、カラー画像形
成用熱転写シートの場合にはイエロー、シアン、マゼン
タの公知の顔料が使用され、更に特殊用途の場合には金
属光沢顔料、蛍光顔料、体質顔料等も使用てき、顔料の
種類は特に限定されない。Furthermore, most of the pigments used in the present invention are black pigments, of which carbon brushing is a typical example, but in the case of thermal transfer sheets for color image formation, known pigments of yellow, cyan, and magenta are used. Furthermore, for special purposes, metallic luster pigments, fluorescent pigments, extender pigments, etc. may also be used, and the type of pigment is not particularly limited.
本発明では使用する熱可塑性樹脂は、比較的低融点の樹
脂であって、例えば、エチレン−酢酸ビニル共重合体（
ＥＶＡ）、エチレン−アクリル酸エステル共重合体（Ｅ
ＥＡ）、ポリエチレン、ポリスチレン、ポリプロピレン
、ポリブデン、石油樹脂、塩化ビニル樹脂、塩化ビニル
−酢酸ビニル共重合体、ポリビニルアルコール、塩化ビ
ニリデン樹脂、メタクリル樹脂、ポリアミド、ポリカー
ボネート フッ素樹脂、ポリビニルフォルマール、ポリ
ビニルブチラール、アセチルセルロース、ニトロセルロ
ース、ポリ酢酸ビニル、ポリイソブチレン、エチルセル
ロース又はポリアセタール等が挙げられ、特に従来感熱
接着剤として使用されている比較低軟化点、例えば、５
０乃至８０℃の軟化点を有するものが好ましい。The thermoplastic resin used in the present invention is a resin with a relatively low melting point, such as ethylene-vinyl acetate copolymer (
EVA), ethylene-acrylic acid ester copolymer (E
EA), polyethylene, polystyrene, polypropylene, polybutene, petroleum resin, vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, vinylidene chloride resin, methacrylic resin, polyamide, polycarbonate, fluororesin, polyvinyl formal, polyvinyl butyral, Examples include acetylcellulose, nitrocellulose, polyvinyl acetate, polyisobutylene, ethylcellulose or polyacetal, and in particular those with a relatively low softening point, such as 5
Those having a softening point of 0 to 80°C are preferred.
本発明において使用する水性媒体は水を主成分とし、そ
の中に水溶性の有機溶剤、界面活性剤、分散剤、保護コ
ロイド、レベリング剤、消泡剤等を含むことができる。The aqueous medium used in the present invention has water as its main component, and can contain water-soluble organic solvents, surfactants, dispersants, protective colloids, leveling agents, antifoaming agents, and the like.
以上の如き成分からなる本発明のインキ組成物は、一体
化粒子中のワックス、顔料及び熱可塑性樹脂の重量比が
ワックス１００部当り顔料が５乃至５０部、熱可塑性樹
脂が５乃至１，０００部の範囲であるのが好ましく、又
、分散液中の全固形分は約１０乃至６０重量％の濃度が
好ましい範囲である。In the ink composition of the present invention comprising the above components, the weight ratio of wax, pigment and thermoplastic resin in the integrated particles is 5 to 50 parts of pigment and 5 to 1,000 parts of thermoplastic resin per 100 parts of wax. 10 to 60% by weight of the total solids in the dispersion.
又、−像化粒子と熱可塑性樹脂粒子の重量比は一体化粒
子１００部当り１０乃至３００部の範囲であるのが好ま
しい。The weight ratio of the -imaged particles to the thermoplastic resin particles is preferably in the range of 10 to 300 parts per 100 parts of the integrated particles.
上記エマルジョンインキは、先ず、−像化粒子にするべ
き成分を１００℃前後の温度に加熱して全体を溶融液状
にして均一に混合し、これを水性媒体中に分散させるこ
とによって得られる。又、別の好ましい方法として、−
像化粒子にするべき成分をメタノール、エタノール、プ
ロパツール、アセトン、メチルエチルケトン、トルエン
、キシレン、酢酸エチル、酢酸ブチル等の溶剤中に溶解
及び分散させ、必要に応じて加熱して均一に混合し、こ
れを水性媒体中に分散させる方法によっても得られる。The above-mentioned emulsion ink is obtained by first heating the components to be formed into image-forming particles to a temperature of around 100 DEG C., turning the whole into a molten liquid, mixing uniformly, and dispersing this in an aqueous medium. Moreover, as another preferable method, -
Components to be formed into image particles are dissolved and dispersed in a solvent such as methanol, ethanol, propatool, acetone, methyl ethyl ketone, toluene, xylene, ethyl acetate, butyl acetate, etc., and heated if necessary to mix uniformly. It can also be obtained by dispersing it in an aqueous medium.
以上の方法における分散方法自体はいずれも従来公知の
方法に準じて行うことができる。The dispersion method itself in the above method can be carried out according to any conventionally known method.
一方、熱可塑性樹脂粒子の分散液は多数の物が市販され
、これらの市場がら人手できるエマルション、ラテック
ス、ディスバージョン等がいずれも使用できるが、樹脂
としては上記−像化粒子よりも２乃至２０℃程度融点が
高いものを選択するのが好ましい。融点が高い限り、こ
れらの樹脂粒子は前記ワックスとの混合物でもよい。On the other hand, a large number of dispersions of thermoplastic resin particles are commercially available, and any of these commercially available emulsions, latexes, dispersions, etc., can be used. It is preferable to select one having a high melting point of about ℃. These resin particles may be mixed with the wax as long as the melting point is high.
本発明のインキ組成物は前記−像化粒子の分散体と上記
樹脂粒子の分散液とを単に混合することによって得られ
る。The ink composition of the present invention can be obtained by simply mixing the above-mentioned dispersion of imaged particles and the above-mentioned dispersion of resin particles.
以上の如き方法により得られるエマルジョンインキは、
従来の同種インキがワックス及び顔料の粒子が夫々別々
に分散しているのに対し、粒子の夫々はワックス、顔料
及び熱可塑性樹脂が一体化された状態となっており、更
にそこに熱可塑性樹脂粒子が混在している点が特徴的で
ある。The emulsion ink obtained by the above method is
Whereas conventional similar inks have wax and pigment particles dispersed separately, each particle is an integrated wax, pigment, and thermoplastic resin, and the thermoplastic resin is also added to the particles. It is characterized by a mixture of particles.
以上の如き本発明のエマルジョンインキを用いて熱転写
シートを製造する方法自体は、公知の方法でよくインキ
を基材フィルムの上に塗工し乾燥すればよい。The method of producing a thermal transfer sheet using the emulsion ink of the present invention as described above may be carried out by any known method, and the ink may be applied onto a base film and dried.
基材フィルムとしては、従来の熱転写シートに使用され
ていると同じ基材フィルムがそのまま用いることができ
ると共に、その他のものも使用することができ、特に制
限されない。As the base film, the same base film used in conventional thermal transfer sheets can be used as is, and other films can also be used, and there are no particular limitations.
好ましい基材フィルムの具体例としては、例えば、ポリ
エステル、ポリプロピレン、セロハン、ポリカーボネー
ト、酢酸セルロース、ポリエチレン、ポリ塩化ビニル、
ポリスチレン、ナイロン、ポリイミド、ポリ塩化ビニリ
デン、ポリビニルアルコール、フッ素樹脂、塩化ゴム、
アイオノマー等のプラスチックフィルム、コンデンサー
紙、パラフィン紙等の紙類、不織布等かあり、又、これ
らを複合した基材フィルムであってもよい。Specific examples of preferred base films include polyester, polypropylene, cellophane, polycarbonate, cellulose acetate, polyethylene, polyvinyl chloride,
Polystyrene, nylon, polyimide, polyvinylidene chloride, polyvinyl alcohol, fluororesin, chlorinated rubber,
Examples include plastic films such as ionomers, papers such as condenser paper and paraffin paper, nonwoven fabrics, and base films made of composites of these materials.
この基材フィルムの厚さは、その強度及び熱伝導性が適
切になるように材料に応じて適宜変更することができる
が、その厚さは、好ましくは、例えば、２乃至２５μｍ
である。The thickness of this base film can be changed as appropriate depending on the material so that its strength and thermal conductivity are appropriate, but the thickness is preferably, for example, 2 to 25 μm.
It is.
基材フィルム上へ前記エマルジョンインキを塗布する方
法としては、グラビアコート、ロールコート、エアナイ
フコートその他多くの手段等が挙げられ、塗布後の乾燥
温度は任意でよく、例えば、乾燥温度が一体化粒子の融
点未満であれば、粒子形状を保持したインキ層が形成さ
れ、一方、一体化粒子の融点以上且つ熱可塑性樹脂粒子
の融点未満の温度で乾燥すれば、ワックス＋樹脂の均な
層中に樹脂粒子が分散したインキ層が形成される。形成
されるインキ層の厚さは、必要な濃度と熱感度との調和
がとれるように決定すべきであって、０．１乃至３０μ
ｍの範囲、好ましくは１乃至２０μｍの範囲である。Methods for applying the emulsion ink onto the base film include gravure coating, roll coating, air knife coating, and many other methods, and the drying temperature after application may be arbitrary. If the temperature is lower than the melting point of the thermoplastic resin particles, an ink layer that maintains the particle shape will be formed.On the other hand, if it is dried at a temperature higher than the melting point of the integrated particles and lower than the melting point of the thermoplastic resin particles, an even layer of wax + resin will be formed. An ink layer in which resin particles are dispersed is formed. The thickness of the ink layer formed should be determined to balance the required density and thermal sensitivity, and should be between 0.1 and 30 μm.
m, preferably in the range 1 to 20 μm.
上記インキ層上には表面層を形成してもよく、形成する
表面層は前述の如きワックスから形成ず１す
るのが好ましく、いずれの方法で形成してもよいが、好
ましい方法は、ワックスを含む水性分散体を使用する方
法である。A surface layer may be formed on the ink layer, and it is preferable that the surface layer is not made of wax as described above, and may be formed by any method, but a preferred method is to use wax as described above. This method uses an aqueous dispersion containing
基材フィルムに熱に弱い材料を用いる場合、サーマルヘ
ッドに接する側の表面に、サーマルヘッドのスティッキ
ングを防止する層を設けることが好ましい。スティッキ
ング防止層は、耐熱性のある樹脂と熱離型剤又は滑剤の
働きをする物質とを基本的な構成成分とする。耐熱性の
ある樹脂としては、ガラス転移点が６０℃以上の合成樹
脂又はＯＨ基又はＣ０ＯＨ基を有する熱可塑性樹脂にア
ミノ基を２個以上有する化合物又はジイソシアネート若
しくはトリイソシアネートを加えて若干の架橋硬化を起
させたものが好適である。熱離型剤又は滑剤は、ワック
ス類や高級脂肪酸のアミド、エステル及び塩のような加
熱により溶融してその作用をするものと、弗素樹脂や無
機物質の粉末のように固体のままで役立つものとがある
。When a heat-sensitive material is used for the base film, it is preferable to provide a layer on the surface in contact with the thermal head to prevent sticking of the thermal head. The anti-sticking layer basically includes a heat-resistant resin and a substance that functions as a heat release agent or a lubricant. Heat-resistant resins include synthetic resins with a glass transition point of 60°C or higher, or thermoplastic resins having OH or COOH groups, and a compound having two or more amino groups, or diisocyanate or triisocyanate added to slightly crosslink and cure. Preferably, those that cause Thermal mold release agents or lubricants include those that melt when heated, such as waxes and amides, esters, and salts of higher fatty acids, and those that remain solid, such as fluororesin and inorganic substance powders. There is.
このようなスティッキング防止層を設けることによって
、熱に弱いプラスチックフィルムを基材とした熱転写シ
ートにおいてもスティッキングが起こることなく熱印字
が可能であって、プラスチックフィルムの持つ切れにく
さ、加工のし易さ等のメリットが生かせる。By providing such an anti-sticking layer, it is possible to perform thermal printing without causing sticking even on thermal transfer sheets based on heat-sensitive plastic films, and it is possible to print them thermally without causing sticking, thereby reducing the resistance to cutting and ease of processing that plastic films have. You can take advantage of the advantages of
熱転写画像は一般に印字に光沢があり、美麗である反面
、文書が読みにくくなることもあるのて、艶消し印字が
望ましいことがある。そのような場合は、例えば、出願
人の提案した（特願昭５８−２０８３０８号）ように、
基材フィルム上に無機顔料、例えば、シリカ、炭酸カル
シウム等を適宜の溶剤に分散させたものをコーティング
してマット層を設けた上に、熱溶融性インキ層をコーテ
ィングして熱転写シートを構成するとよい。或いは基材
フィルム自体をマット加工して使用してもよい（やはり
出願人の提案にかかる特願昭５８−２０８３０７号の技
術）。Thermal transfer images generally have glossy and beautiful prints, but the documents may become difficult to read, so matte prints are sometimes desirable. In such a case, for example, as proposed by the applicant (Japanese Patent Application No. 58-208308),
A thermal transfer sheet is formed by coating a base film with an inorganic pigment such as silica, calcium carbonate, etc. dispersed in an appropriate solvent to provide a matte layer, and then coating a heat-melting ink layer. good. Alternatively, the base film itself may be matted and used (this is also the technique of Japanese Patent Application No. 1983-208307 proposed by the applicant).
本発明をカラー印字用の熱転写シートに適用できること
はいうまでもないから、多色の熱転写シートも又本発明
の範囲に含まれる。又、熱転写プリンターとしてはライ
ン或はシリアルタイプのいずれにも適用することがてき
る。Since it goes without saying that the present invention can be applied to thermal transfer sheets for color printing, multicolor thermal transfer sheets are also included within the scope of the present invention. Further, as a thermal transfer printer, it can be applied to either a line or serial type.
（効 果）
以上の如き本発明によれば、ワックス、顔料及び熱可塑
性樹脂を一旦均一に混合して水中に分散させることによ
り、顔料粒子はワックス及び熱可塑性樹脂によって被覆
された状態になるので、転写時に被転写材との摩擦によ
っても地汚れの発生が少ない。(Effects) According to the present invention as described above, by uniformly mixing the wax, pigment, and thermoplastic resin and dispersing the mixture in water, the pigment particles are coated with the wax and the thermoplastic resin. Also, there is less background staining due to friction with the transfer material during transfer.
又、ベヒクルの１成分として接着性の良好な熱可塑性樹
脂を含有しているので基材フィルムに対する接着性が向
上して箔落ちの問題が生じない。Furthermore, since the vehicle contains a thermoplastic resin with good adhesiveness as one component, the adhesiveness to the base film is improved and the problem of foil falling does not occur.
又、同様な理由で被転写材に対する接着性も向上し、白
抜は文字等も発生しない。Furthermore, for the same reason, the adhesion to the transfer material is improved, and no characters or the like are generated in the white areas.
更にインキ層の乾燥温度をワックスと熱可塑性樹脂との
混合物の融点以上で且つ熱可塑性樹脂粒子の融点以下の
温度とすることにより、インキ層はワックスと熱可塑性
樹脂とからなる均一層中に熱可塑性樹脂の粒子が分散し
た状態になり、インキ層の膜強度が低下して熱転写時の
膜切れ性が向上し、シャープで解像性の高い印字が可能
とな（実施例）
以下、実施例を挙げて本発明を更に具体的に説明する。Furthermore, by setting the drying temperature of the ink layer to a temperature higher than the melting point of the mixture of wax and thermoplastic resin and lower than the melting point of the thermoplastic resin particles, the ink layer is heated in a uniform layer consisting of wax and thermoplastic resin. The plastic resin particles become dispersed, the film strength of the ink layer decreases, and the film tearability during thermal transfer improves, enabling sharp, high-resolution printing (Example) The following is an example. The present invention will be explained in more detail by referring to the following.
尚、文中、部又は％とあるのは特に断りのない限り重量
基準である。In the text, parts or percentages are based on weight unless otherwise specified.
実施例１
カーボンブラック（ダイヤブラックＧ、三菱化成製）
１５部エチレン／酢酸ビニ
ル共重合体（ＥＶ八へレックス３１０、三井ポリケミカ
ル製） １０部パラフィンワックス（パラフィン１５
叶、日木精蝋製） ５０部
カルナバワックス ２５部上記成分を
約１００乃至１２０℃でアトライタにより溶融混練し、
この溶融混練液を、０．５％のノニオン性界面活性剤を
含む２００部の水中にデイシルバーで強力に攪拌しなが
ら注入し、更の３０分間攪拌して固形公約３３％の黒色
の水性エマルジョンを得た。更にこの中にエチレン／酢
酸ビニル共重合体（ＥＶＡフレックス３１０、三井ポリ
ケミカル製）の水性分散液（固形分４０％）１０部を添
加混合して本発明のインキ組成物を得た。Example 1 Carbon black (Diablack G, manufactured by Mitsubishi Kasei)
15 parts ethylene/vinyl acetate copolymer (EV Yahelex 310, manufactured by Mitsui Polychemicals) 10 parts paraffin wax (paraffin 15
50 parts carnauba wax 25 parts The above ingredients were melted and kneaded using an attritor at about 100 to 120°C,
This melt-kneaded solution was poured into 200 parts of water containing 0.5% nonionic surfactant while vigorously stirring with a day silver, and stirred for an additional 30 minutes to form a black aqueous emulsion with a solid content of approximately 33%. I got it. Furthermore, 10 parts of an aqueous dispersion (solid content: 40%) of an ethylene/vinyl acetate copolymer (EVA Flex 310, manufactured by Mitsui Polychemicals) was added and mixed to obtain an ink composition of the present invention.
上記インキ組成物をグラビアロール方式て固形分として
３ｇ／ｒｎ’の割合て厚さ３．５μｍのポリエチレンテ
レフタレートのフィルムの表面に塗布し、次いで約６５
乃至７０℃の温度で乾燥して熱転写シートを得た。The above ink composition was applied to the surface of a polyethylene terephthalate film with a thickness of 3.5 μm at a solid content of 3 g/rn' using a gravure roll method, and then about 6.5 μm in thickness.
A thermal transfer sheet was obtained by drying at a temperature of 70°C to 70°C.
上記の熱転写シートは折り曲げてもインキ層の剥離は無
く、表面を濾紙で軽くこすりても濾紙の汚れは発生せず
、又、被転写紙として平滑度の低い上質紙を使用し、市
販のサーマルヘッドを使用して熱転写印字を行ったとこ
ろ、解像性に優れたシャープな画質となり、又、ボイド
も少ない耐摩耗性に優れた印字が得られ、被転写紙の地
汚れも発生しなかった。The above thermal transfer sheet does not peel off the ink layer even when folded, and the filter paper does not become stained even when the surface is lightly rubbed with filter paper.In addition, high-quality paper with low smoothness is used as the transfer paper, and commercially available thermal transfer sheets are used. When thermal transfer printing was performed using the head, the image quality was sharp with excellent resolution, and prints with excellent abrasion resistance were obtained with few voids, and there was no background smudge on the transfer paper. .
実施例２
ＥＶ八へレックス２５０の水性エマルジョン（固形分２
０％）３０部を実施例１の３３％黒色水性エマルジョン
１００部に加え、以下実施例１と同様にして本発明のイ
ンキ組成物を得、且つ乾燥温度を６０乃至６５℃とし、
耐汚染性及び耐摩耗性に優れた熱転写シートを得た。Example 2 Aqueous emulsion of EV 8 Helex 250 (solid content 2
0%) was added to 100 parts of the 33% black aqueous emulsion of Example 1, and the ink composition of the present invention was obtained in the same manner as in Example 1, and the drying temperature was 60 to 65 ° C.
A thermal transfer sheet with excellent stain resistance and abrasion resistance was obtained.
Claims (4)
子及び熱可塑性樹脂の粒子を水性媒体中に分散させたこ
とを特徴とする熱転写シートのインキ層形成用インキ組
成物。(1) An ink composition for forming an ink layer on a thermal transfer sheet, characterized in that particles in which wax, pigment, and thermoplastic resin are integrated and particles of thermoplastic resin are dispersed in an aqueous medium.
又は有機溶剤中で溶解混合後、水性媒体中に分散させ、
更に熱可塑性樹脂の水性分散液と混合することを特徴と
する熱転写シートのインキ層形成用インキ組成物の製造
方法。(2) Wax, pigment and thermoplastic resin are melt-mixed or dissolved and mixed in an organic solvent, and then dispersed in an aqueous medium,
A method for producing an ink composition for forming an ink layer of a thermal transfer sheet, which further comprises mixing with an aqueous dispersion of a thermoplastic resin.
の重量比がワックス１００部当り顔料が５乃至５０部、
熱可塑性樹脂が５乃至１，０００部の範囲である請求項
１及び２に記載のインキ組成物及び製造方法。(3) The weight ratio of wax, pigment and thermoplastic resin in the integrated particles is 5 to 50 parts pigment per 100 parts wax;
The ink composition and manufacturing method according to claims 1 and 2, wherein the thermoplastic resin is in the range of 5 to 1,000 parts.
粒子１００部当り１０乃至３００部の範囲である請求項
１及び２に記載のインキ組成物及び製造方法。(4) The ink composition and manufacturing method according to Claims 1 and 2, wherein the weight ratio of the integrated particles to the thermoplastic resin particles is in the range of 10 to 300 parts per 100 parts of the integrated particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188235A JPH0238469A (en) | 1988-07-29 | 1988-07-29 | Ink composition and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188235A JPH0238469A (en) | 1988-07-29 | 1988-07-29 | Ink composition and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0238469A true JPH0238469A (en) | 1990-02-07 |
Family
ID=16220156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63188235A Pending JPH0238469A (en) | 1988-07-29 | 1988-07-29 | Ink composition and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0238469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206037A (en) * | 2014-04-19 | 2015-11-19 | ゼロックス コーポレイションＸｅｒｏｘ Ｃｏｒｐｏｒａｔｉｏｎ | Process for preparing aqueous inkjet printing ink |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60212390A (en) * | 1984-04-06 | 1985-10-24 | Canon Inc | Coating liquid for producing thermal transfer material |
| JPS6357679A (en) * | 1986-08-28 | 1988-03-12 | Osaka Shiiring Insatsu Kk | Hot-melt ink |
-
1988
- 1988-07-29 JP JP63188235A patent/JPH0238469A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60212390A (en) * | 1984-04-06 | 1985-10-24 | Canon Inc | Coating liquid for producing thermal transfer material |
| JPS6357679A (en) * | 1986-08-28 | 1988-03-12 | Osaka Shiiring Insatsu Kk | Hot-melt ink |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206037A (en) * | 2014-04-19 | 2015-11-19 | ゼロックス コーポレイションＸｅｒｏｘ Ｃｏｒｐｏｒａｔｉｏｎ | Process for preparing aqueous inkjet printing ink |
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