JPH0427587A - Manufacture of thermal transfer sheet - Google Patents
Manufacture of thermal transfer sheetInfo
- Publication number
- JPH0427587A JPH0427587A JP2132605A JP13260590A JPH0427587A JP H0427587 A JPH0427587 A JP H0427587A JP 2132605 A JP2132605 A JP 2132605A JP 13260590 A JP13260590 A JP 13260590A JP H0427587 A JPH0427587 A JP H0427587A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thermal transfer
- transfer sheet
- ink layer
- wax
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000839 emulsion Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 73
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 17
- 239000000155 melt Substances 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 8
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 21
- 238000007639 printing Methods 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 15
- 230000001235 sensitizing effect Effects 0.000 abstract description 13
- 239000003086 colorant Substances 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 6
- 238000011109 contamination Methods 0.000 abstract 2
- 238000009472 formulation Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 33
- 239000000463 material Substances 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 239000004203 carnauba wax Substances 0.000 description 8
- 235000013869 carnauba wax Nutrition 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000012188 paraffin wax Substances 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 229920000298 Cellophane Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000007757 hot melt coating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- 241000735234 Ligustrum Species 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
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 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
- 239000012736 aqueous medium Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 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
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 238000002156 mixing Methods 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
- 239000003921 oil Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 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
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000012176 shellac wax Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019385 spermaceti wax Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- 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）
本発明は熱転写シートの製造方法に関し、更に詳しくは
被転写材の搬送速度を熱転写シートの搬送速度よりも大
にして行う熱転写方法（以下単にＮ倍モード法という）
において、印字時の地汚れ、尾引き等がな（、更に印字
の濃度や解像性等が改良された熱転写シートの提供を目
的とする。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a thermal transfer sheet, and more specifically to a thermal transfer method (hereinafter simply referred to as (referred to as the N-fold mode method)
An object of the present invention is to provide a thermal transfer sheet that is free from scumming, trailing, etc. during printing (and has improved print density, resolution, etc.).
（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. .
上記従来の熱転写シートは、基材フィルムとして厚さ１
０〜２０μｍのコンデンサ紙やパラフィン紙の様な紙或
いは厚さ３〜２０μｍのポリエステルやセロファンの様
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。The above conventional thermal transfer sheet has a thickness of 1 as a base film.
Using paper such as capacitor paper or paraffin paper with a thickness of 0 to 20 μm, or 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.
上記熱転写シートの１つの問題は、同一箇所では１回の
印字しか行えず、従って印字の幅と同一の幅の熱転写シ
ートが消費されるという経済性の問題である。One problem with the thermal transfer sheet described above is the economical problem in that printing can be performed only once at the same location, and therefore a thermal transfer sheet of the same width as the printing width is consumed.
この様な問題を解決する方法としては、同一箇所で複数
回の印字が可能な多数回印字用熱転写シートを使用する
方法が知られているが、この方法では使用回数に従って
印字濃度が低下して均一濃度の印字が困難であるという
問題がある。A known method to solve this problem is to use a thermal transfer sheet for multiple printing, which can print multiple times at the same location, but with this method, the print density decreases with the number of times it is used. There is a problem in that it is difficult to print with uniform density.
又、別の方法としては、被転写材の搬送速度を熱転写シ
ートの搬送速度よりも大にして（両者の搬送方法は同一
方向でも逆方向でもよい）行うＮ倍モード方法がある。Another method is an N-times mode method in which the conveying speed of the transfer material is made higher than the conveying speed of the thermal transfer sheet (both conveying methods may be in the same direction or in opposite directions).
この方法では被転写材の搬送速度なＮとし、熱転写シー
トの搬送速度なＮ。In this method, N is the conveyance speed of the transfer material, and N is the conveyance speed of the thermal transfer sheet.
としＮＵＮ とすると、印字距離はＮでありながら、
熱転写シートの消費量はＮｏであり、例えば、Ｎ＝５．
Ｎ ＝１とすると、熱転写シートの消費量は従来の１
１５となり非常に経済的である。If NUN, the printing distance is N, but
The consumption amount of the thermal transfer sheet is No, for example, N=5.
When N = 1, the consumption of thermal transfer sheet is 1
15, which is very economical.
しかしながら、この方法では被転写材と熱転写シートと
が相対的に摩擦されながら移動することから、被転写材
に地汚れや印字の尾引きが発生し、鮮明且つ高解像度の
印字が困難であるという問題がある。However, in this method, the transfer material and the thermal transfer sheet move while being subjected to relative friction, which causes background smudges and trailing of the print on the transfer material, making it difficult to print with clear and high resolution. There's a problem.
地汚れの問題を解決する方法として、インキ層の表面に
無色のワックス層を形成する方法があるが、この表面層
は摩擦によって容易に取り去られ、十分な解決策にはな
っていない。一方、屋上きを解決する方法として、イン
キ層を比較的溶融粘度の高いワックスで形成する方法が
あるが、この方法では、インキ層の被転写材に対する濡
れが悪（、紙の様に表面の粗い被転写材の場合にはボイ
ド（白抜け）が発生し、高濃度感及び高解像性の印字が
困難である。One way to solve the background smudge problem is to form a colorless wax layer on the surface of the ink layer, but this surface layer is easily removed by friction and is not a sufficient solution. On the other hand, there is a method to solve the problem of rooftop coating, in which the ink layer is formed using a wax with a relatively high melt viscosity. In the case of a rough transfer material, voids (white spots) occur, making it difficult to print with high density and high resolution.
従って、本発明の目的は以上の如き欠点を解決し、Ｎ倍
モード法においても、印字時の地汚れ、尾引き等がなく
、更に印字の１度や解像性等が改良された熱転写シート
を提供することである。Therefore, an object of the present invention is to solve the above-mentioned drawbacks, and to provide a thermal transfer sheet that is free from background smudges, trailing, etc. during printing even in the N-times mode method, and has improved printing accuracy, resolution, etc. The goal is to provide the following.
（問題点を解決する為の手段） 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.
即ち、本発明は、基材フィルムの一方の面に、下記イン
キ層よりも溶融粘度の低い増感層を形成し、次いで該イ
ンク層上に加熱により溶融する転写インキ層を形成する
熱転写シートの製造方法において、上記増感層をワック
スのエマルジョンを塗工して形成することを特徴とする
熱転写シートの製造方法である。That is, the present invention provides a thermal transfer sheet in which a sensitized layer having a lower melt viscosity than the ink layer described below is formed on one side of a base film, and then a transfer ink layer that is melted by heating is formed on the ink layer. This method of manufacturing a thermal transfer sheet is characterized in that the sensitized layer is formed by coating a wax emulsion.
（作 用）
熱転写シートのインキ層を高溶融粘度に形成し、インキ
層と基材フィルムとの間に低溶融粘度の増感層を形成す
ることによって、Ｎ倍モード法においても、印字時の地
汚れや尾引き等がなく、更に印字の濃度や解像性等が改
良された熱転写シートが提供される。(Function) By forming the ink layer of the thermal transfer sheet with a high melt viscosity and forming a sensitized layer with a low melt viscosity between the ink layer and the base film, even in the N-fold mode method, the A thermal transfer sheet is provided that is free from scumming, trailing, etc., and has improved print density, resolution, and the like.
又、上記増感層をエマルジョン方法で形成することによ
って、均一膜厚の増感層が形成されるので、印字間の濃
度のバラツキのない高品位口字が可能となる。Furthermore, by forming the sensitizing layer by an emulsion method, a sensitizing layer with a uniform thickness is formed, so that high-quality characters with no density variation between printings are possible.
（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.
本発明で用いる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
いることが出来ると共に、その他のものも使用すること
が出来、特に制限されない。As the base film used in the present invention, 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、不織布等があり、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
切になる様に材料に応じて適宜変更することが出来るが
、その厚さは、好ましくは、例えば、２〜２５μｍ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.
本発明では上記基材フィルムの面に増感層を介して熱溶
融性インキ層を必要な材料を配合したインキから形成す
る。In the present invention, a heat-melting ink layer is formed on the surface of the base film via a sensitizing layer using an ink containing necessary materials.
増感層は主として、ワックスから形成するが、このワッ
クス層は後述のインキ層と同様に着色剤で着色されてい
てもよいし、勿論無色でもよい。The sensitizing layer is mainly formed from wax, but this wax layer may be colored with a coloring agent like the ink layer described later, or it may be colorless.
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、カルナウバワックス、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、イボタ
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、−都度性ワックス、脂肪酸エス
テル、脂肪酸アミド等、種々のワックスが用いられるが
、本発明では上記ワックスの中で１００℃における溶融
粘度が１００ｃｐｓ以下、好ましくは５０ｃｐｓ以下の
ものを使用する。溶融粘度が高過ぎるとインキ層と同様
になり増感作用が不足し、ボイドが発生し易い、この様
な増感層は０．１〜２μｍ、好ましくは０．５〜１．５
ｕｍ程度の厚みに設ければよい、増感層が薄すぎると増
感効果が不十分で、厚すぎると感度が低下する。Representative examples of wax include microcrystalline wax, carnauba wax, paraffin wax, and the like. In addition, various waxes such as Fischer-Tropsch wax, various low molecular weight polyethylenes, wood wax, beeswax, spermaceti wax, privet wax, wool wax, shellac wax, candelilla wax, petrolactam, assorted waxes, fatty acid esters, fatty acid amides, etc. However, in the present invention, among the above waxes, those having a melt viscosity at 100° C. of 100 cps or less, preferably 50 cps or less are used. If the melt viscosity is too high, it becomes similar to the ink layer, resulting in insufficient sensitizing effect and voids are likely to occur.Such a sensitizing layer has a thickness of 0.1 to 2 μm, preferably 0.5 to 1.5
If the sensitizing layer is too thin, the sensitizing effect will be insufficient, and if it is too thick, the sensitivity will decrease.
上記増感層を従来と同様にホットメルトコート等により
形成する場合には、核層が非常に薄い為均一厚みの層の
形成が困難であり、本発明では、ワックスを含む水性分
散体を使用するエマルジョン方法で形成する。好ましい
方法はワックスの水分散体を基材フィルム上に塗工し、
ワックスの融点以下又は以上の温度で乾燥する方法であ
る。When the above-mentioned sensitized layer is formed by hot melt coating as in the past, it is difficult to form a layer with a uniform thickness because the core layer is very thin.In the present invention, an aqueous dispersion containing wax is used. It is formed using an emulsion method. A preferred method is to apply an aqueous dispersion of wax onto a base film,
This is a method of drying at a temperature below or above the melting point of wax.
上記ワックスを含む水性媒体は水又は水と水溶性有機溶
剤、例えば、メタノール、エタノール、イソプロパツー
ルとの混合物であり、この様な水溶性有機溶剤を水１０
０重量部当り５〜２００重量部使用することにより、ワ
ックス水分散体の基材フィルムに対する濡れ性が向上す
る。The aqueous medium containing the wax is water or a mixture of water and a water-soluble organic solvent, such as methanol, ethanol, isopropanol, and the water-soluble organic solvent is mixed with 10% of water.
By using 5 to 200 parts by weight per 0 parts by weight, the wettability of the aqueous wax dispersion to the base film is improved.
更に上記ワックス水分散体は、少量の乳化剤（界面活性
剤）や、レベリング剤等の公知の添加剤を含有すること
が出来る。この分散液の固形分は約１０〜５０重量％程
度である。Furthermore, the wax aqueous dispersion may contain a small amount of known additives such as an emulsifier (surfactant) and a leveling agent. The solids content of this dispersion is about 10 to 50% by weight.
上記ワックスから形成される増感層は、ワックスを含む
インキ組成物を従来公知の塗工方法で塗工し、乾燥する
ことによって形成されるが、乾燥温度をワックスの融点
以上の温度で行えば、表面平滑な増感層が形成され、一
方、ワックスの融点よりも低い温度で乾燥すれば、分散
体の粒子形状が残った微細凹凸形状の表面を有する増感
層が形成される。The sensitized layer formed from the above-mentioned wax is formed by applying an ink composition containing the wax using a conventionally known coating method and drying it. A sensitized layer with a smooth surface is formed, whereas a sensitized layer with a finely uneven surface in which the particle shape of the dispersion remains is formed when dried at a temperature lower than the melting point of the wax.
上記増感層上に設けるインキ層は、着色剤とビヒクルと
からなり、更に必要に応じて種々の添加剤を加えたもの
でもよい。上記着色剤としては、有機又は無機の顔料若
しくは染料のうち、記録材料として良好な特性を何する
もの、例えば、十分な着色１度を有し、光、熱、温度等
により変褪色しないものが好ましい。勿論、ブラックの
他にシアン、マゼンタ、イエロー等種々の色の着色剤を
も用いることが出来る。The ink layer provided on the sensitized layer comprises a colorant and a vehicle, and may further contain various additives as required. The above-mentioned coloring agent includes organic or inorganic pigments or dyes that have good properties as a recording material, such as those that have sufficient coloring degree and do not discolor due to light, heat, temperature, etc. preferable. Of course, colorants of various colors other than black, such as cyan, magenta, and yellow, can also be used.
本発明においては、比較的小面積のインキ層によりＮ倍
の印字を行う為に、インキ層の着色剤濃度は比較的高濃
度に設定する必要があり、インキ層の厚みにもよるが、
インキ層が３〜２０μｍの好ましい範囲においては、好
ましい濃度は２０〜７０重量％、より好ましくは３０〜
５０重量％の範囲であり、濃度が低過ぎると印字濃度が
不足し、又、高過ぎると、紙に対するインキの濡れが悪
く、ボイドが発生し易く好ましくない。In the present invention, in order to print N times as many characters using a relatively small area of the ink layer, it is necessary to set the colorant concentration of the ink layer to a relatively high concentration, and depending on the thickness of the ink layer,
In a preferred range of ink layer thickness of 3 to 20 μm, the preferred concentration is 20 to 70% by weight, more preferably 30 to 70% by weight.
It is in the range of 50% by weight, and if the concentration is too low, the print density will be insufficient, and if it is too high, the ink will not wet the paper easily and voids will easily occur, which is not preferable.
使用するビヒクルとしては、前記のワックスを主成分と
し、その他ワックスと乾性油、樹脂、鉱油、セルロース
及びゴムの誘導体等との混合物が用いられる。The vehicle used includes the above-mentioned wax as a main component, and mixtures of other waxes with drying oils, resins, mineral oils, cellulose, rubber derivatives, and the like.
以上の着色剤とビヒクルからなるインキは、１００℃に
おける溶融粘度が３００ｃｐｓ以上になる様に配合する
ことが好ましく、ワックスのみでは溶融粘度を３００ｃ
ｐｓ以上に出来ない場合には、ビニル系樹脂等の各種の
熱可塑性樹脂を併用してその凝集力を上げ溶融粘度を向
上させることが出来る０通常ビニル系樹脂をワックスの
７重量％以上併用することによつて溶融粘度を３００ｃ
ｐｓ以上とすることが出来る。好ましい溶融粘度は１０
０℃において３００〜１，０００ｃｐｓであり、溶融粘
度が低過ぎると地汚れや尾引きの問題が顕著になり、又
、溶融粘度が高過ぎるとボイドが発生し易い、更に後述
の様な滑剤をインキ層に包含させても地汚れや尾引きの
点が改善される。The ink consisting of the above colorant and vehicle is preferably blended so that the melt viscosity at 100°C is 300 cps or more, and wax alone has a melt viscosity of 300 cps or more.
If it is not possible to achieve a wax content higher than ps, various thermoplastic resins such as vinyl resins can be used in combination to increase the cohesive force and improve the melt viscosity. 0Usually vinyl resins are used in combination with 7% by weight or more of the wax. By reducing the melt viscosity to 300c
ps or more. The preferred melt viscosity is 10
It is 300 to 1,000 cps at 0°C, and if the melt viscosity is too low, problems such as scumming and trailing become noticeable, and if the melt viscosity is too high, voids are likely to occur. Even if it is included in the ink layer, scumming and trailing can be improved.
上記インキ層を増感層上へ形成する方法としては、ホッ
トメルトコートの外、ホットラッカーコート、グラビア
コート、グラビアリバースコート、ロールコート、その
他多くの手段で夫々の塗工液を塗布する方法等が挙げら
れる。Methods for forming the above ink layer on the sensitized layer include hot melt coating, hot lacquer coating, gravure coating, gravure reverse coating, roll coating, and many other methods of applying the respective coating liquids. can be mentioned.
本発明では上記インキ層の表面に無着色の表面層を形成
することが好ましい、この表面層は、例えば、前記の様
なワックスから形成してもよいし、インキ層のビヒクル
（メジウム）から形成してもよいし、更に好ましくは滑
性ワックス、シリコーンワックス、弗素系樹脂、シリコ
ーン系樹脂、高級脂肪酸アミド、エステル、界面活性剤
等の滑剤から形成したり、これらの滑剤に加えて熱可塑
性樹脂を併用してその被膜強度を向上させることが好ま
しく、又、滑剤層と樹脂層との２層構成の表面層として
もよい。特にこれらの表面層を滑剤やビヒクルの水性分
散体を塗工及び低温乾燥して形成することによって、粒
子形状の残った微小凹凸形状の表面が形成されるので、
−層地汚れ防止性に優れた熱転写シートとすることが出
来る。In the present invention, it is preferable to form an uncolored surface layer on the surface of the ink layer. This surface layer may be formed from wax as described above, or may be formed from the vehicle (medium) of the ink layer. It may be formed from a lubricant such as a lubricating wax, a silicone wax, a fluorine resin, a silicone resin, a higher fatty acid amide, an ester, a surfactant, or a thermoplastic resin in addition to these lubricants. It is preferable to use them in combination to improve the coating strength, and the surface layer may have a two-layer structure consisting of a lubricant layer and a resin layer. In particular, by forming these surface layers by coating an aqueous dispersion of a lubricant or vehicle and drying at a low temperature, a surface with a microscopic unevenness in which the particle shape remains is formed.
- A thermal transfer sheet with excellent layer stain prevention properties can be obtained.
尚、以上の本発明の熱転写シートの背面には、サーマル
ヘッドのスティッキングを防止する層を設けてもよいの
は当然である。It goes without saying that a layer for preventing sticking of the thermal head may be provided on the back surface of the thermal transfer sheet of the present invention.
本発明をカラー印字用の熱転写シートに適用出来ること
は云う迄もないから、同一基材に２色以上塗り分けられ
た多色の熱転写シートも又本発明の範囲に含まれる。It goes without saying that the present invention can be applied to thermal transfer sheets for color printing, so multi-colored thermal transfer sheets in which two or more colors are applied to the same base material are also included within the scope of the present invention.
（実施例）
次に実施例及び比較例を挙げて本発明を更に具体的に説
明する。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。(Example) Next, the present invention will be explained in more detail by giving examples and comparative examples. In the text, parts or percentages are based on weight unless otherwise specified.
実施例１
下記組成の塗工液を背面にスリップ層を形成した厚さ６
．０μｍのポリエステルフィルム（商品名「ルミラー」
東し■製）の表面に塗布量が乾燥特約１ 、０ ｇ／ｒ
ｄ （１、０ｇ／ｎｆはｌＬＬｍに相当する。以下同じ
）になる様に塗布して増感層（１００℃溶融粘度２８ｃ
ｐｓ）を形成した。Example 1 A slip layer was formed on the back surface using a coating liquid with the following composition, and the thickness was 6.
．． 0 μm polyester film (product name: Lumirror)
The coating amount on the surface of Toshi ■ is 1.0 g/r.
d (1.0 g/nf corresponds to lLLm. The same applies hereinafter), and the sensitized layer (melt viscosity at 100 °C
ps) was formed.
皿玉屋里ヱエ放旦戒
カルナバワックス ３０部ノニオン
系界面活性剤 １部イソプロパツール
１００部水
３０部次に下記の組成の組成物
を温度１００”Ｃで加熱し、ホットメルトによるロール
コート法にて上記増感層の表面に塗布量８ｇ／ｒｒｒの
割合で塗布して熱転写インキ層（１００℃溶融粘度５０
０ｃｐｓ）を形成した。Saratamaya Rie Hodankai Carnauba Wax 30 parts Nonionic surfactant 1 part Isopropanol 100 parts Water
30 parts Next, a composition having the following composition was heated at a temperature of 100"C and applied to the surface of the sensitized layer at a coating amount of 8 g/rrr by hot melt roll coating to form a thermal transfer ink layer (100" C). °C melt viscosity 50
0 cps).
インキ インキ
カルナバワックス ２０部エチレン
／酢酸ビニル共重合体くスミテートＫＣ−１０、住友化
学製） １３部１５０”Ｆパラフ
ィンワックス ４５部カーボンブラック
３５部次に、下記の組成物を温度６０℃で
加熱し、ホットラッカーグラビアコート法により２．０
ｇ／耐の割合で塗工及び乾燥させて表面層を形成し本発
明の熱転写シートを得た。Ink Ink Carnauba wax 20 parts Ethylene/vinyl acetate copolymer Sumitate KC-10 (manufactured by Sumitomo Chemical) 13 parts 150"F paraffin wax 45 parts Carbon black
35 parts Next, the following composition was heated at a temperature of 60°C, and a 2.0%
A surface layer was formed by coating and drying at a ratio of g/durability to obtain a thermal transfer sheet of the present invention.
を工′
エチレン／酢酸ビニル共重合体（スミテートＥＣ−１０
、住友化学製） ４０部カルナバワッ
クス ２０部１５０”Ｆパラフィン
ワックス ５０部キシレン
１００部インプロパツール
１０部実施例２
増感層を１５０＠ Ｆパラフィンワックス（１００℃溶
融粘度５ｃｐｓ）を用いて１．０ｇ／−の厚みに形成し
、他は実施例１と同様にして本発明の熱転写シートを作
成した。Ethylene/vinyl acetate copolymer (Sumitate EC-10)
(manufactured by Sumitomo Chemical) 40 parts carnauba wax 20 parts 150"F paraffin wax 50 parts xylene
100 copies of improv tool
10 parts Example 2 A thermal transfer sheet of the present invention was prepared in the same manner as in Example 1 except that a sensitizing layer was formed using 150@F paraffin wax (100°C melt viscosity 5 cps) to a thickness of 1.0 g/-. Created.
実施例３
増感層を下記のワックス組成（１００℃溶融粘度８０ｃ
ｐｓ）を用いて１．ｏｇ／耐の厚みに形成し、他は実施
例１と同様にして本発明の熱転写シートを作成した。Example 3 The sensitized layer was made of the following wax composition (melt viscosity at 100°C: 80c).
ps) using 1. A thermal transfer sheet of the present invention was prepared in the same manner as in Example 1, except that the sheet was formed to a thickness of 0.05 oz.
１玉！里ヱエ戒旦爪
カルナバワックス １９部塩化ビニ
ル／酢酸ビニル共重合体（エバフレックス２１Ｏ１三井
ポリケミカル製） １部イソプロパツール
６０部水
１００部実施例４
増感層を下記のワックス組成（１００℃溶融粘度５０ｃ
ｐｓｌを用いて１．０ｇ／ｒＴ１′の厚みに形成し、他
は実施例１と同様にして本発明の熱転写シートを作成し
た。1 ball! Riie Kaidan Claw Carnauba Wax 19 parts Vinyl chloride/vinyl acetate copolymer (Evaflex 21O1 manufactured by Mitsui Polychemicals) 1 part Isopropanol
60 parts water
100 parts Example 4 The sensitized layer was made of the following wax composition (melt viscosity at 100°C: 50c)
A thermal transfer sheet of the present invention was prepared in the same manner as in Example 1 except that it was formed using psl to a thickness of 1.0 g/rT1'.
且ｆｆｌ圭工戒皿滅
カルナバワックス １９部塩化ビニ
ル／酢酸ビニル共重合体（エバフレックス２１Ｏ１三井
ポリケミカル製） ０．５部インプロパツール
６０部水
１００部実施例５
増感層を下記のワックス組成（１００℃溶融粘度１６ｃ
ｐｓ）を用いて１．５ｇ／−の厚みに形成し、他は実施
例１と同様にして本発明の熱転写シートを作成した。andffl Keiko Kaidara Mei Carnauba Wax 19 parts Vinyl chloride/vinyl acetate copolymer (Evaflex 21O1 manufactured by Mitsui Polychemicals) 0.5 parts Improper Tool
60 parts water
100 parts Example 5 The sensitizing layer was made of the following wax composition (melt viscosity at 100°C: 16c).
A thermal transfer sheet of the present invention was prepared in the same manner as in Example 1, except that the sheet was formed to have a thickness of 1.5 g/- using (PS).
皇Ｗヱエ液■或
キャンデリラワックス ３０部エマルジ
ョン形成用界面活性剤 １部イソプロパツール
５０部水
５０部実施例６
下記の組成の組成物を温度１００℃で加熱し、ホットメ
ルトによるロールコート法にて実施例１の増感層の表面
に塗布量８ｇ／ｒ／の割合で塗布して熱転写インキ層（
１００℃溶融粘度８００ｃｐｓ）を形成し、他は実施例
１と同様にして本発明の熱転写シートを得た。Emulsion forming surfactant 1 part isopropanol 50 parts water
50 parts Example 6 A composition having the following composition was heated at a temperature of 100°C and applied to the surface of the sensitized layer of Example 1 at a coating amount of 8 g/r/by hot-melt roll coating method for thermal transfer. Ink layer (
A thermal transfer sheet of the present invention was obtained in the same manner as in Example 1 except that the sheet had a melt viscosity of 800 cps at 100°C.
インキ インキ
カルナバワックス ２０部エチレン
／酢酸ビニル共重合体（スミテートにＣ−１０，住友化
学製） ２０部１５０°Ｆパラフイ
ンワツクス ４５部カーボンブラック
３５部実施例７
下記の組成の組成物を温度１００℃で加熱し、ホットメ
ルトによるロールコート法にて実施例１の増感層の表面
に塗布量８ ｇ／ｒｄの割合で塗布して熱転写インキ層
（１００℃溶融粘度４００ｃｐｓ）を形成し、他は実施
例１と同様にして本発明の熱転写シートを得た。Ink Ink Carnauba wax 20 parts Ethylene/vinyl acetate copolymer (Sumitate C-10, manufactured by Sumitomo Chemical) 20 parts 150°F paraffin wax 45 parts Carbon black
35 parts Example 7 A composition having the following composition was heated at a temperature of 100°C and applied to the surface of the sensitized layer of Example 1 at a coating amount of 8 g/rd using a hot melt roll coating method for thermal transfer. A thermal transfer sheet of the present invention was obtained in the same manner as in Example 1 except that an ink layer (melt viscosity at 100°C: 400 cps) was formed.
インキ インキ
カルナバワックス ２０部エチレン
／酢酸ビニル共重合体（スミテートにＣ−１０、住友化
学製） １０部１５０°Ｆパラフ
インワツクス ４５部カーボンブラック
２５部比較例】
実施例１において増感層及び表面層を形成しなかったこ
と以外は実施例１と同様にして比較例の熱転写シートを
得た。Ink Ink Carnauba wax 20 parts Ethylene/vinyl acetate copolymer (Sumitate C-10, manufactured by Sumitomo Chemical) 10 parts 150°F paraffin wax 45 parts Carbon black
25 parts Comparative Example A thermal transfer sheet of a comparative example was obtained in the same manner as in Example 1 except that the sensitized layer and surface layer were not formed in Example 1.
比較例２
実施例１において増感層を形成しなかったこと以外は実
施例１と同様にして比較例の熱転写シートを得た。Comparative Example 2 A thermal transfer sheet of a comparative example was obtained in the same manner as in Example 1 except that the sensitized layer was not formed in Example 1.
比較例３
実施例３において塩化ビニル／酢酸ビニル共重合体１部
を５部にして１００℃溶融粘度を３００ｃｐｓにし、他
は実施例３と同様にして比較例の熱転写シートを得た。Comparative Example 3 A thermal transfer sheet of a comparative example was obtained in the same manner as in Example 3 except that 1 part of the vinyl chloride/vinyl acetate copolymer in Example 3 was changed to 5 parts to give a melt viscosity of 300 cps at 100°C.
使用例１
前記実施例と比較例の熱転写シートを夫々Ｎ倍モード用
印字評価機（Ｎ＝６）で印字して比較し、その結果を下
記第１表に示した。尚、記録紙としてはＴＲＷＩ（十条
製紙製）を使用した。Use Example 1 The thermal transfer sheets of the above Example and Comparative Example were printed and compared using an N-time mode printing evaluation machine (N=6), and the results are shown in Table 1 below. Note that TRWI (manufactured by Jujo Paper Industries) was used as the recording paper.
遭Ｉ」−ｊく
０：良好 Δ；やや不良 ×：不良
（効 果）
以上説明の様に、熱転写シートのインキ層を高溶融粘度
に形成し、インキ層と基材フィルムとの間に低溶融粘度
の増感層を形成することによって、Ｎ倍モード法におい
ても、印字時の地汚れや尾引き等がな（、更に印字の濃
度や解像性等が改良された熱転写シートが提供される。0: Good Δ: Slightly poor ×: Poor (effect) As explained above, the ink layer of the thermal transfer sheet is formed with a high melt viscosity, and there is a low By forming a sensitized layer of melt viscosity, a thermal transfer sheet with improved print density, resolution, etc. can be provided without scumming or trailing during printing even in the N-times mode method. Ru.
又、上記増感層をエマルジョン方法で形成することによ
って、均一膜厚の増感層が形成されるので、
印字間の濃度のバラツキのない高品位印字が可能となる
。Furthermore, by forming the sensitized layer by an emulsion method, a sensitized layer with a uniform thickness is formed, so that high-quality printing without density variations between printings is possible.
Claims (7)
溶融粘度の低い増感層を形成し、次いで該インク層上に
加熱により溶融する転写インキ層を形成する熱転写シー
トの製造方法において、上記増感層をワックスのエマル
ジョンを塗工して形成することを特徴とする熱転写シー
トの製造方法。(1) In a method for producing a thermal transfer sheet, which comprises forming a sensitized layer having a lower melt viscosity than the ink layer described below on one side of a base film, and then forming a transfer ink layer that melts by heating on the ink layer. . A method for producing a thermal transfer sheet, characterized in that the sensitized layer is formed by coating a wax emulsion.
ｐｓ以上であり、増感層の溶融粘度が１００℃において
１００ｃｐｓ以下である請求項１に記載の熱転写シート
の製造方法。(2) The melt viscosity of the ink layer is 300c at 100℃
The method for producing a thermal transfer sheet according to claim 1, wherein the sensitized layer has a melt viscosity of 100 cps or less at 100°C.
求項１に記載の熱転写シートの製造方法。(3) The method for producing a thermal transfer sheet according to claim 1, wherein the ink layer has a pigment concentration of 20 to 70% by weight.
項１に記載の熱転写シートの製造方法。(4) The method for producing a thermal transfer sheet according to claim 1, wherein the ink layer has a thickness in the range of 3 to 20 μm.
として形成されている請求項１に記載の熱転写シートの
製造方法。(5) The method for producing a thermal transfer sheet according to claim 1, wherein the ink layer is formed using wax and a thermoplastic resin as a vehicle.
る請求項１に記載の熱転写シートの製造方法。(6) The method for producing a thermal transfer sheet according to claim 1, wherein an uncolored surface layer is formed on the surface of the ink layer.
シートの製造方法。(7) The method for producing a thermal transfer sheet according to any one of claims 1 to 6, which is for N-times mode.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2132605A JPH0427587A (en) | 1990-05-24 | 1990-05-24 | Manufacture of thermal transfer sheet |
| US07/560,593 US5219638A (en) | 1989-08-02 | 1990-07-31 | Thermal transfer sheet |
| DE69022918T DE69022918T2 (en) | 1989-08-02 | 1990-08-01 | Thermal transfer layer. |
| EP19900308468 EP0411924B1 (en) | 1989-08-02 | 1990-08-01 | Thermal transfer sheet |
| CA 2022582 CA2022582C (en) | 1989-08-02 | 1990-08-02 | Thermal transfer sheet |
| US08/013,610 US5362549A (en) | 1989-08-02 | 1993-02-04 | Thermal transfer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2132605A JPH0427587A (en) | 1990-05-24 | 1990-05-24 | Manufacture of thermal transfer sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0427587A true JPH0427587A (en) | 1992-01-30 |
Family
ID=15085245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2132605A Pending JPH0427587A (en) | 1989-08-02 | 1990-05-24 | Manufacture of thermal transfer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427587A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5848613A (en) * | 1995-08-11 | 1998-12-15 | Aisin Aw Co., Ltd. | Electromagnetic pressure regulating valve |
| JP2007317433A (en) * | 2006-05-24 | 2007-12-06 | Mitsubishi Cable Ind Ltd | Connecting element |
| JP2007317434A (en) * | 2006-05-24 | 2007-12-06 | Mitsubishi Cable Ind Ltd | Connection member |
| JP2008166136A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Connecting member, and harness connector using this connecting member |
| JP2008166134A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Harness connector |
| JP2008166133A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Connecting member and harness connector using this connecting member |
| JP2008262838A (en) * | 2007-04-13 | 2008-10-30 | Mitsubishi Cable Ind Ltd | Wire terminal |
-
1990
- 1990-05-24 JP JP2132605A patent/JPH0427587A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5848613A (en) * | 1995-08-11 | 1998-12-15 | Aisin Aw Co., Ltd. | Electromagnetic pressure regulating valve |
| JP2007317433A (en) * | 2006-05-24 | 2007-12-06 | Mitsubishi Cable Ind Ltd | Connecting element |
| JP2007317434A (en) * | 2006-05-24 | 2007-12-06 | Mitsubishi Cable Ind Ltd | Connection member |
| JP2008166136A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Connecting member, and harness connector using this connecting member |
| JP2008166134A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Harness connector |
| JP2008166133A (en) * | 2006-12-28 | 2008-07-17 | Mitsubishi Cable Ind Ltd | Connecting member and harness connector using this connecting member |
| JP2008262838A (en) * | 2007-04-13 | 2008-10-30 | Mitsubishi Cable Ind Ltd | Wire terminal |
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