JP6870198B2 - Thermal transfer image receiving sheet - Google Patents
Thermal transfer image receiving sheet Download PDFInfo
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- JP6870198B2 JP6870198B2 JP2015014066A JP2015014066A JP6870198B2 JP 6870198 B2 JP6870198 B2 JP 6870198B2 JP 2015014066 A JP2015014066 A JP 2015014066A JP 2015014066 A JP2015014066 A JP 2015014066A JP 6870198 B2 JP6870198 B2 JP 6870198B2
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- 238000012546 transfer Methods 0.000 title claims description 50
- 239000010410 layer Substances 0.000 claims description 77
- 239000011347 resin Substances 0.000 claims description 40
- 229920005989 resin Polymers 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 17
- -1 polyethylene Polymers 0.000 claims description 17
- 239000003431 cross linking reagent Substances 0.000 claims description 12
- 238000007373 indentation Methods 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 125000004069 aziridinyl group Chemical group 0.000 claims description 2
- 238000000859 sublimation Methods 0.000 description 10
- 230000008022 sublimation Effects 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000007541 indentation hardness test Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- Thermal Transfer Or Thermal Recording In General (AREA)
Description
本発明はサーマルヘッド等を介して昇華性染料を熱転写することにより画像を記録するために用いられる熱転写受像シートに関する。 The present invention relates to a thermal transfer image receiving sheet used for recording an image by thermally transferring a sublimation dye via a thermal head or the like.
デジタルカメラ等で撮影した画像を印刷する方式としては、インクジェット方式、昇華転写記録方式が主流である。昇華転写記録方式はインクジェット方式と比して階調表現に優れるという利点がある。 Inkjet method and sublimation transfer recording method are the mainstream methods for printing images taken by a digital camera or the like. The sublimation transfer recording method has an advantage that it is superior in gradation expression as compared with the inkjet method.
昇華転写記録方式においては、基材上に例えばシアン、マゼンダ、イエローの熱昇華性染料層を形成した熱転写シートと、基材上に熱昇華性染料を受容し得る受容層を形成した熱転写受像シートとを対向して重ね合わせ、サーマルヘッドを熱転写シートの染料層を形成していない側に接触させ、画像情報に応じて熱をかけ各昇華性染料を熱転写受像シートに所定量移行させることにより画像を形成する。サーマルヘッドに印加する熱量に応じて染料の転写量を細かく制御することができるため、階調表現に優れた画像を得ることが可能である。 In the sublimation transfer recording method, a thermal transfer sheet having a heat sublimation dye layer of, for example, cyanide, magenta, or yellow formed on a base material and a heat transfer image receiving sheet having a receiving layer capable of receiving the heat sublimation dye formed on the base material. The thermal head is brought into contact with the side of the thermal transfer sheet on which the dye layer is not formed, and heat is applied according to the image information to transfer a predetermined amount of each sublimation dye to the thermal transfer image receiving sheet. To form. Since the transfer amount of the dye can be finely controlled according to the amount of heat applied to the thermal head, it is possible to obtain an image excellent in gradation expression.
熱転写受像シートは、基材上に少なくとも熱昇華性染料を受容し得る受容層を設けたものである。熱転写受像シートの基材として一般的な合成紙を用いた場合、コシの弱さと耐熱性不足が問題となる。とりわけ耐熱性不足はカール、シワ等の品質不良を引き起こし大きな問題となっていた。 The thermal transfer image receiving sheet is provided with a receiving layer capable of receiving at least a thermal sublimation dye on a base material. When general synthetic paper is used as the base material of the heat transfer image receiving sheet, the weakness of stiffness and insufficient heat resistance become problems. In particular, insufficient heat resistance causes quality defects such as curls and wrinkles, which has been a major problem.
こうした課題を解決するために、例えば特許文献１には比較的安価で熱収縮率が小さいポリエチレンテレフタレートを主成分として含む背面フィルム層を用いる提案がなされている。 In order to solve such a problem, for example, Patent Document 1 proposes using a back film layer containing polyethylene terephthalate as a main component, which is relatively inexpensive and has a small heat shrinkage rate.
一方、熱転写受像シートの受容層側ともう一方の側に搬送性、裏面筆記性、糊付け性、バックプリント適性等を付与するために背面層が設けられる場合がある（例えば特許文献２〜５参照）。
On the other hand, a back layer may be provided on the receiving layer side and the other side of the heat transfer image receiving sheet in order to impart transportability, backside writing property, gluing property, backprint suitability, etc. (see, for example,
上記特許文献２〜５は基材として用いた合成紙上に直接背面層を形成したものであり、基材と背面層の間に背面フィルム層を設けた場合については言及されていない。本発明者らが検討したところ、基材、背面フィルム層、背面層をこの順に積層した熱転写受像シートにおいては、紙送りローラを具備する記録装置に用いた際に紙送り量のズレに起因する染料インクの付着位置ズレが発生することが分かった。インクの付着位置ズレは印画品質を著しく損なうため、解決が急務となっていた。
The above-mentioned
本発明は係る事情を鑑みてなされたものであり、基材、背面フィルム層、背面層をこの順に積層した熱転写受像シートにおいて、インクの付着位置ズレを生じない、優れた印画品質を達成するものである。 The present invention has been made in view of the above circumstances, and achieves excellent printing quality without causing an ink adhesion position shift in a heat transfer image receiving sheet in which a base material, a back film layer, and a back layer are laminated in this order. Is.
本発明者らは鋭意検討を重ねた結果、基材の一方の面に染料受容層、他方の面に樹脂層、背面層が順次積層されてなる熱転写受像シートにおいて、熱転写時のインクの付着位置ズレを防止するためには、樹脂層の剥離強度及び背面層の押し込み硬度を制御することが重要であることを見出し、本発明を完成させた。 As a result of diligent studies, the present inventors have found that in a heat transfer image receiving sheet in which a dye receiving layer is sequentially laminated on one surface of a base material, a resin layer on the other surface, and a back surface layer, the ink adhesion position during heat transfer. We have found that it is important to control the peel strength of the resin layer and the indentation hardness of the back layer in order to prevent the displacement, and completed the present invention.
本発明は以下のものにより構成される。 The present invention comprises the following.
（１）基材の一方の面に受容層、他方の面に樹脂層と背面層とが順次積層され、かつ、前記背面層が最表層を構成する熱転写受像シートであって、
前記基材が紙基材にポリエチレンまたはポリプロピレンを被覆して成り、
前記背面層は少なくともバインダ樹脂と架橋剤とを含有する組成物からなり、
前記基材と前記樹脂層との剥離強度が４Ｎ／１０ｍｍ以上であり、
前記背面層側からのナノインデンテーション法で測定された押し込み硬度が０．３ＧＰａ以上であることを特徴とする熱転写受像シートである。
(1) A thermal transfer image receiving sheet in which a receiving layer is sequentially laminated on one surface of a base material, and a resin layer and a back surface layer are sequentially laminated on the other surface, and the back surface layer constitutes the outermost layer.
The base material consists of a paper base material coated with polyethylene or polypropylene.
The back layer is composed of a composition containing at least a binder resin and a cross-linking agent.
The peel strength between the base material and the resin layer is 4N / 10 mm or more.
The thermal transfer image receiving sheet is characterized in that the indentation hardness measured by the nanoindentation method from the back layer side is 0.3 GPa or more.
（２）前記架橋剤がアジリジン系化合物であることを特徴とする（１）に記載の熱転写受像シートである。 (2) The thermal transfer image receiving sheet according to (1) , wherein the cross-linking agent is an aziridine-based compound.
（３）前記バインダ樹脂がガラス転移温度６０℃以上のポリエステル樹脂からなることを特徴とする（１）または（２）に記載の熱転写受像シートである。 ( 3 ) The thermal transfer image receiving sheet according to (1 ) or ( 2 ), wherein the binder resin is made of a polyester resin having a glass transition temperature of 60 ° C. or higher.
（４）前記組成物がディスパージョンからなることを特徴とする（１）〜（３）のいずれかに記載の熱転写受像シートである。 ( 4 ) The thermal transfer image receiving sheet according to any one of (1 ) to ( 3 ), wherein the composition comprises a dispersion.
本発明の（１）に記載の構成によれば、基材の他方の面に樹脂層と背面層とを順次積層してなる熱転写受像シートにおいて、前記基材と前記樹脂層との剥離強度を４Ｎ以上とすることにより、熱転写受像シートがプリンタに具備された送りローラで搬送される際に、基材と樹脂層との層間の結着の弱さに起因するズレの発生を防ぐことができる。また、さらに前記背面層側からの押し込み硬度を０．３ＧＰａ以上とすることにより、送りローラとの接点でのロール圧による表面変形を防ぐことができ、印画時のズレによる印画品質の低下を抑制することができる。 According to the configuration described in (1) of the present invention, in a thermal transfer image receiving sheet in which a resin layer and a back surface layer are sequentially laminated on the other surface of the base material, the peel strength between the base material and the resin layer is determined. By setting the value to 4N or more, it is possible to prevent the occurrence of deviation due to the weak bonding between the base material and the resin layer when the thermal transfer image receiving sheet is conveyed by the feed roller provided in the printer. .. Further, by setting the indentation hardness from the back layer side to 0.3 GPa or more, it is possible to prevent surface deformation due to roll pressure at the contact point with the feed roller, and it is possible to suppress deterioration of printing quality due to misalignment during printing. can do.
（２）に記載の構成によれば、前記背面層をバインダ樹脂と架橋剤とを含有する組成物から形成することで、架橋密度の高い背面層を形成することができる。その結果、背面層の表面硬度が向上し、送りローラとの接点でのロール圧による表面変形を防ぐことができ、印画時のズレによる印画品質の低下を抑制することができる。 According to the configuration described in (2), the back layer having a high cross-linking density can be formed by forming the back layer from a composition containing a binder resin and a cross-linking agent. As a result, the surface hardness of the back surface layer is improved, surface deformation due to roll pressure at the contact point with the feed roller can be prevented, and deterioration of printing quality due to misalignment during printing can be suppressed.
（３）に記載の構成によれば、前記架橋剤にポットライフや反応性に優れたアジリジン系化合物を用いることで、より効率的に架橋密度を高めることができ生産性が向上する。 According to the configuration described in (3), by using an aziridine-based compound having excellent pot life and reactivity as the cross-linking agent, the cross-linking density can be increased more efficiently and the productivity is improved.
（４）に記載の構成によれば、前記バインダ樹脂がガラス転移温度６０℃以上のポリエステル樹脂からなることで、前記背面層側からの押し込み硬度を０．３ＧＰａ以上とすることにより、送りローラとの接点でのロール圧による表面変形を防ぐことができ、印画時
のズレによる印画品質の低下を抑制することができる。
According to the configuration described in (4), the binder resin is made of a polyester resin having a glass transition temperature of 60 ° C. or higher, and the indentation hardness from the back surface layer side is set to 0.3 GPa or higher to form a feed roller. It is possible to prevent surface deformation due to roll pressure at the contact point, and it is possible to suppress deterioration of printing quality due to misalignment during printing.
（５）に記載の構成によれば、前記組成物がディスパージョンからなることにより環境負荷の少ない製造方法で熱転写受像シートを得ることができる。 According to the configuration described in (5), since the composition is composed of dispersion, a heat transfer image receiving sheet can be obtained by a manufacturing method having a small environmental load.
このように本発明の熱転写受像シートを用いることにより、インクの付着位置ズレが生じない、高品質な画像を得ることが可能である。 By using the heat transfer image receiving sheet of the present invention in this way, it is possible to obtain a high-quality image in which the ink adhesion position does not shift.
本発明の詳細な内容を以下に説明する。 The detailed contents of the present invention will be described below.
図１に示すように、本発明は基材２の一方の面に染料受容層３、他方の面に樹脂層４と背面層５とが順次積層された熱転写受像シート１であり、特に基材１と樹脂層４との剥離強度が４Ｎ以上で、背面層５側からの押し込み硬度が０．３ＧＰａ以上であることを特徴とする熱転写受像シート１である。
As shown in FIG. 1, the present invention is a thermal transfer image receiving sheet 1 in which a dye receiving layer 3 is sequentially laminated on one surface of a
（基材）
基材１としては上質紙、コート紙、各種合成紙、レジンコート紙等を適宜用いることが可能である。とりわけ、セルロース繊維紙の表裏をポリエチレンやポリプロピレン樹脂で被覆したレジンコート紙は白色度、光沢度に優れるため好適に用いられる。
(Base material)
As the base material 1, high-quality paper, coated paper, various synthetic papers, resin-coated paper and the like can be appropriately used. In particular, resin-coated paper in which the front and back surfaces of cellulose fiber paper are coated with polyethylene or polypropylene resin is preferably used because it has excellent whiteness and glossiness.
（樹脂層）
上記で説明したように熱転写受像シート１の裏面、すなわち基材１の裏面に直接積層する樹脂層４は、熱転写時の熱圧に起因する搬送のズレを抑制するためのものであり、基材１との強い密着性（強い剥離強度）と耐熱性（特に寸法安定性や平滑性等）が要求される。剥離強度は強いほど良いが、４Ｎ／１０ｍｍ以上の強度を有するものが好ましい。
(Resin layer)
As described above, the back surface of the heat transfer image receiving sheet 1, that is, the
例えば、樹脂層４としてポリエチレンテレフタレート（ＰＥＴ）フィルムを用いた場合、紙基材との間に押出ラミネーターを用いてポリエチレンやポリプロピレン樹脂を３００℃程度の高温で押出し、紙基材と溶融積層させることで４Ｎ以上の強度を有することができる。またこの溶融押出しに際しては、基材（紙基材とポリエチレンまたはポリプロピレンとの積層体）との十分な剥離強度を保つために、ＰＥＴフィルムとしては易接着処理もしくはコロナ処理されたものを用いることが好ましい。とりわけ易接着処理を施したＰＥＴフィルムは高い剥離強度を有するため好適に用いられる。
For example, when a polyethylene terephthalate (PET) film is used as the
（背面層）
本発明に係る背面層は樹脂層の上に形成され、押し込み硬度が０．３ＧＰａ以上であることを特徴とし、少なくともバインダ樹脂と架橋剤を含有する組成物からなる。前記背面層の押し込み硬度を０．３ＧＰａ以上とすることにより、送りローラとの接点でのロール圧による表面変形を防ぐことができ、印画時のズレによる印画品質の低下を抑制することができる。前記組成物は水系、溶剤系の塗布液として用いることが可能であるが、環境負荷の少ない水系塗布液が好ましく用いられる。
(Back layer)
The back layer according to the present invention is formed on a resin layer, has a pressing hardness of 0.3 GPa or more, and is composed of a composition containing at least a binder resin and a cross-linking agent. By setting the indentation hardness of the back surface layer to 0.3 GPa or more, it is possible to prevent surface deformation due to roll pressure at the contact point with the feed roller, and it is possible to suppress deterioration of printing quality due to misalignment during printing. The composition can be used as a water-based or solvent-based coating liquid, but a water-based coating liquid having a small environmental load is preferably used.
押し込み硬度０．３ＧＰａ以上を得るために、バインダ樹脂としてはガラス転移温度が６０℃以上のポリエステル樹脂が好ましく、また、架橋剤としてはイソシアネート系、オキサゾリン系、カルボジイミド系、アジリジン系を用いることができるが、中でもポットライフ、反応性に優れたアジリジン系化合物が好適に用いられる。例えば、６０℃以上の
ポリエステル樹脂としてはＭＤ−１２００（東洋紡社製）等が、また、アジリジン系架橋剤としては、ＰＺ−３３（日本触媒社製）等が挙げられる。
In order to obtain an indentation hardness of 0.3 GPa or more, a polyester resin having a glass transition temperature of 60 ° C. or higher is preferable as the binder resin, and an isocyanate-based, oxazoline-based, carbodiimide-based, or aziridine-based resin can be used as the cross-linking agent. However, among them, an aziridine-based compound having excellent pot life and reactivity is preferably used. For example, MD-1200 (manufactured by Toyobo Co., Ltd.) and the like can be mentioned as a polyester resin having a temperature of 60 ° C. or higher, and PZ-33 (manufactured by Nippon Shokubai Co., Ltd.) and the like can be mentioned as an aziridine-based cross-linking agent.
また、背面層にはブロッキング性、インキ定着性を向上させるために各種フィラーを併用することが可能である。例えば、フィラーとしてはゲル法シリカ、コロイダルシリカ、更には高分子フィラー等を適宜用いることが可能である。 In addition, various fillers can be used in combination with the back layer in order to improve blocking property and ink fixability. For example, as the filler, gel method silica, colloidal silica, polymer filler and the like can be appropriately used.
（染料受容層）
本発明の熱転写受像シートにおいては、基材１の一方の面に昇華性染料を受容する染料受容層３が形成される。染料受容層は、例えばバインダ樹脂と離型剤を含有する塗布液を用いて形成される。受容層のバインダ樹脂としてはアクリル系樹脂、塩化ビニル系樹脂、ポリエステル系樹脂等を適宜用いることが可能であるが、染料受容性と離型性のバランスに優れた塩化ビニル・アクリル共重合体もしくは塩化ビニル・酢酸ビニル共重合体が好適に用いられる。
(Dye receiving layer)
In the thermal transfer image receiving sheet of the present invention, a dye receiving layer 3 that receives a sublimation dye is formed on one surface of the base material 1. The dye receiving layer is formed by using, for example, a coating liquid containing a binder resin and a mold release agent. As the binder resin of the receiving layer, an acrylic resin, a vinyl chloride resin, a polyester resin or the like can be appropriately used, but a vinyl chloride / acrylic copolymer having an excellent balance between dye acceptability and releasability or A vinyl chloride / vinyl acetate copolymer is preferably used.
受容層塗布液に用いる離型剤としては、シリコーンオイル、フッ素系化合物、リン酸エステル系化合物等を適宜用いることが可能である。本発明の水系塗布液においてはポリエーテル変性したシリコーンオイルがより好適に用いられる。 As the release agent used in the receiving layer coating liquid, silicone oil, a fluorine-based compound, a phosphoric acid ester-based compound, or the like can be appropriately used. In the aqueous coating liquid of the present invention, a polyether-modified silicone oil is more preferably used.
本発明の熱転写受像シートにおいて、染料転写時の熱により基材がダメージを受けることを避けるため、基材と染料受容層の間に中間層を設けることが可能である。中間層としてはバインダ樹脂に中空粒子を分散させたもの、あるいは発泡処理を施した高分子膜、例えば発泡ポリプロピレン等が好適に用いられる。 In the thermal transfer image receiving sheet of the present invention, an intermediate layer can be provided between the base material and the dye receiving layer in order to prevent the base material from being damaged by the heat during dye transfer. As the intermediate layer, a binder resin in which hollow particles are dispersed, or a polymer film subjected to a foaming treatment, for example, foamed polypropylene, or the like is preferably used.
以下、実施例等を挙げて本発明をさらに詳細に説明するが、本発明はこれらの実施例に限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to Examples and the like, but the present invention is not limited to these Examples.
＜実施例１＞
紙基材の一方の面にポリプロピレンで被覆した積層体の他方の面と、樹脂層として易接着ポリエチレンテレフタレート（東レ社製「ルミラーＵ３４」）とを、押出し機（エクストルーダー）にてポリプロピレンを押出し積層した。なお、押出し加工条件は、加工速度５０ｍ／ｍｉｍ、樹脂温度３２０℃であった。
<Example 1>
Polypropylene is extruded by using an extruder (extruder) to extrude the other surface of a laminate in which one surface of a paper base material is coated with polypropylene and the easily adhesive polyethylene terephthalate (“Lumilar U34” manufactured by Toray Industries, Inc.) as a resin layer. Laminated. The extrusion processing conditions were a processing speed of 50 m / mim and a resin temperature of 320 ° C.
次に上記樹脂層の上に、下記組成の背面層形成用組成物を乾燥後の塗布量が１．０ｇ／ｃｍ２になるようにグラビアコーターで塗布し、９０℃で１分間乾燥させて背面層を形成した。
なお、ポリエステル系ディスパージョンに含まれるポリエステルのガラス転移温度は６７℃である。
［背面層形成用組成物：固形分２７％］
・ポリエステル系ディスパージョン： １００ｇ
（東洋紡社製「ＭＤ‐１２００」、固形分３４％）
・アジリジン系架橋剤（日本触媒社製「ＰＺ‐３３」）： １．７ｇ
・純水： ３０．５ｇ
Next, on the resin layer, the composition for forming a back layer having the following composition is applied with a gravure coater so that the coating amount after drying becomes 1.0 g / cm 2 , and the back surface is dried at 90 ° C. for 1 minute. A layer was formed.
The glass transition temperature of the polyester contained in the polyester-based dispersion is 67 ° C.
[Composition for forming back layer: solid content 27%]
・ Polyester dispersion: 100g
("MD-1200" manufactured by Toyobo Co., Ltd., solid content 34%)
-Aziridine-based cross-linking agent ("PZ-33" manufactured by Nippon Shokubai Co., Ltd.): 1.7 g
・ Pure water: 30.5g
次に上記基材の他方の面をコロナ処理した後、その上面に下記組成の染料受容層形成用組成物をもちいて、乾燥後の塗布量が２．０ｇ／ｃｍ２になるようにグラビアコーターで塗布し、９０℃で１分間乾燥させて染料受容層を形成して熱転写受像シートを作製した。
［染料受容層形成用組成物：固形分２７％］
・塩化ビニル・アクリル共重合体： １００ｇ
（日信化学社製「ビニブラン７０１」、固形分３０％）
・ポリエーテル変性シリコーンオイル： ３．０ｇ
（信越化学社製「ＫＦ‐３５４Ｌ」）
・純水： １９．２ｇ
Next, after corona-treating the other surface of the base material, a composition for forming a dye receiving layer having the following composition is used on the upper surface thereof, and a gravure coater is used so that the coating amount after drying is 2.0 g / cm 2. And dried at 90 ° C. for 1 minute to form a dye receiving layer to prepare a heat transfer image receiving sheet.
[Composition for forming a dye receiving layer: solid content 27%]
-Vinyl chloride / acrylic copolymer: 100 g
("Viniblanc 701" manufactured by Nissin Chemical Co., Ltd., solid content 30%)
-Polyether-modified silicone oil: 3.0 g
("KF-354L" manufactured by Shin-Etsu Chemical Co., Ltd.)
・ Pure water: 19.2 g
＜実施例２＞
樹脂層としてコロナ処理ポリエチレンテレフタレート（東レ社製「ルミラーＳ１０５」を用いたこと以外は実施例１と同様にして熱転写受像シートを作製した。
<Example 2>
A thermal transfer image receiving sheet was produced in the same manner as in Example 1 except that corona-treated polyethylene terephthalate (“Lumirer S105” manufactured by Toray Industries, Inc.) was used as the resin layer.
＜実施例３＞
背面層の乾燥後の塗布量が２．０ｇ／ｃｍ２としたこと以外は実施例１と同様にして熱転写受像シートを作製した。
<Example 3>
A thermal transfer image receiving sheet was produced in the same manner as in Example 1 except that the coating amount of the back layer after drying was 2.0 g / cm 2.
＜実施例４＞
下記の背面層形成用組成物を用いた以外は実施例１と同様にして熱転写受像シートを作製した。
［背面層形成用組成物］
・ポリエステル系エマルジョン： １００ｇ
（東洋紡社製「ＭＤ‐１２００」、固形分３４％）
・アジリジン系架橋剤（日本触媒社製「ＰＺ‐３３」）： １．７ｇ
・コロイダルシリカ： ８５ｇ
（ＡＤＥＫＡ社製「ＡＴ−５０」、固形分４０％）
・純水 ７１．４ｇ
<Example 4>
A thermal transfer image receiving sheet was prepared in the same manner as in Example 1 except that the following composition for forming a back layer was used.
[Composition for forming back layer]
・ Polyester emulsion: 100g
("MD-1200" manufactured by Toyobo Co., Ltd., solid content 34%)
-Aziridine-based cross-linking agent ("PZ-33" manufactured by Nippon Shokubai Co., Ltd.): 1.7 g
・ Colloidal silica: 85g
("AT-50" manufactured by ADEKA, solid content 40%)
・ Pure water 71.4g
＜比較例１＞
樹脂層として標準グレードのポリエチレンテレフタレート（東レ社製「ルミラーＳ１０」）を用いた以外は実施例１と同様にして熱転写受像シートを作製した。
<Comparative example 1>
A thermal transfer image receiving sheet was produced in the same manner as in Example 1 except that standard grade polyethylene terephthalate (“Lumilar S10” manufactured by Toray Industries, Inc.) was used as the resin layer.
＜比較例２＞
下記の背面層形成用組成物を用いた以外は実施例１と同様にして熱転写受像シートを作製した。
ポリエステル系エマルジョン（東洋紡社製「ＭＤ‐１２００」、固形分３４％）１００ｇ
純水２５．９ｇ
<Comparative example 2>
A thermal transfer image receiving sheet was prepared in the same manner as in Example 1 except that the following composition for forming a back layer was used.
Polyester emulsion ("MD-1200" manufactured by Toyobo Co., Ltd., solid content 34%) 100 g
Pure water 25.9g
＜評価＞
実施例１〜４及び比較例１〜２で得られた熱転写受像シートを用いて、剥離強度、押し込み硬度、印画の測定、評価を以下の方法にて行った。結果は以下の表１に記す。
<Evaluation>
Using the thermal transfer image receiving sheets obtained in Examples 1 to 4 and Comparative Examples 1 and 2, the peel strength, the indentation hardness, and the printing were measured and evaluated by the following methods. The results are shown in Table 1 below.
（剥離強度評価）
引張強度試験機(島津製作所社製「ＥＺ‐ＬＸ」)を用い、試験速度１０００ｍｍ／ｍｉｍにて剥離試験を行い背面フィルム層の剥離強度を調べた。
(Evaluation of peel strength)
Using a tensile strength tester (“EZ-LX” manufactured by Shimadzu Corporation), a peeling test was conducted at a test speed of 1000 mm / mim to examine the peeling strength of the back film layer.
（押し込み硬度評価）
押し込み硬度試験機（ＭＴＳ社製「ナノインデンターＤＣＭ」）にバーコビッチ圧子を装着し、背面層の押し込み硬度試験を行った。深さ８００ｎｍの硬度から押し込み硬度を算出した。
(Evaluation of indentation hardness)
A Berkovich indenter was attached to an indentation hardness tester (“Nano Indenter DCM” manufactured by MTS), and an indentation hardness test of the back layer was performed. The indentation hardness was calculated from the hardness at a depth of 800 nm.
（印画評価）
熱転写昇華型プリンタを４０℃８０％ＲＨの恒温恒湿槽に設置し、グレーベタ画像を１０枚連続で印画した。色ズレが１枚も発生しなかったものを〇、１枚以上発生したものを×とした。
(Printing evaluation)
A thermal transfer sublimation printer was installed in a constant temperature and humidity chamber at 40 ° C. and 80% RH, and 10 gray solid images were printed in succession. Those in which no color shift occurred were evaluated as 〇, and those in which one or more sheets were generated were evaluated as x.
＜比較評価結果＞
実施例１〜４で得られた本発明の熱転写受像シートは、いずれも基材と樹脂層との剥離強度が４Ｎ／１０ｍｍ以上であり、かつ、背面層の押し込み強度が０．３ＧＰａ以上を示し、色ズレ発生のない良好な印画特性が得られた。一方、比較例１で得られた比較例品は、標準の未処理ＰＥＴフィルムを用いた為に剥離強度が２．０Ｎ／１０ｍｍと低く、また、比較例２で得られた比較例品は背面層に架橋剤を用いないことから背面層の押し込み強度が０．２３ＧＰａと低く、印画時に色ズレが発生した。
<Comparison evaluation result>
The thermal transfer image receiving sheets of the present invention obtained in Examples 1 to 4 all show a peel strength of 4N / 10 mm or more between the base material and the resin layer, and a pushing strength of the back layer of 0.3 GPa or more. , Good printing characteristics without color shift were obtained. On the other hand, the comparative example product obtained in Comparative Example 1 has a low peel strength of 2.0 N / 10 mm because a standard untreated PET film is used, and the comparative example product obtained in Comparative Example 2 has a back surface. Since no cross-linking agent was used for the layer, the pushing strength of the back layer was as low as 0.23 GPa, and color shift occurred during printing.
１・・・熱転写受像シート
２・・・基材
３・・・染料受容層
４・・・樹脂層
５・・・背面層
1 ... Thermal transfer
Claims (4)
前記基材が紙基材にポリエチレンまたはポリプロピレンを被覆して成り、
前記背面層は少なくともバインダ樹脂と架橋剤とを含有する組成物からなり、
前記基材と前記樹脂層との剥離強度が４Ｎ／１０ｍｍ以上であり、
前記背面層側からのナノインデンテーション法で測定された押し込み硬度が０．３ＧＰａ以上であることを特徴とする熱転写受像シート。 A thermal transfer image receiving sheet in which a receiving layer is sequentially laminated on one surface of a base material, a resin layer and a back surface layer are sequentially laminated on the other surface, and the back surface layer constitutes the outermost layer.
The base material consists of a paper base material coated with polyethylene or polypropylene.
The back layer is composed of a composition containing at least a binder resin and a cross-linking agent.
The peel strength between the base material and the resin layer is 4N / 10 mm or more.
A thermal transfer image receiving sheet characterized in that the indentation hardness measured by the nanoindentation method from the back layer side is 0.3 GPa or more.
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| JP7005996B2 (en) * | 2017-08-07 | 2022-01-24 | 凸版印刷株式会社 | Thermal transfer image receiving sheet |
| JP6988281B2 (en) * | 2017-09-04 | 2022-01-05 | 凸版印刷株式会社 | Thermal transfer image receiving sheet and its manufacturing method |
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| JPS63239086A (en) * | 1987-03-27 | 1988-10-05 | Toyo Ink Mfg Co Ltd | Thermal transfer material |
| JPH03275386A (en) * | 1990-03-27 | 1991-12-06 | Tomoegawa Paper Co Ltd | Thermal transfer image receiving medium |
| JP3341218B2 (en) * | 1993-02-24 | 2002-11-05 | 大日本印刷株式会社 | Thermal transfer image receiving sheet |
| JP3357960B2 (en) * | 1993-03-19 | 2002-12-16 | 大日本印刷株式会社 | Thermal transfer image receiving sheet |
| JPH0796680A (en) * | 1993-09-29 | 1995-04-11 | Victor Co Of Japan Ltd | Image receiving paper for thermal transfer recording |
| JPH10217622A (en) * | 1997-02-10 | 1998-08-18 | Oji Paper Co Ltd | Receptor tucked sheet for heat transfer |
| JP3259833B2 (en) * | 1998-04-02 | 2002-02-25 | 東洋紡績株式会社 | Thermal transfer image receiving sheet |
| JP2000118158A (en) * | 1998-10-16 | 2000-04-25 | Oji Paper Co Ltd | Thermal transfer accepting sheet |
| JP2002274068A (en) * | 2001-03-19 | 2002-09-25 | Fuji Photo Film Co Ltd | Image receiving sheet |
| GB0108199D0 (en) * | 2001-04-02 | 2001-05-23 | Dupont Teijin Films Us Ltd | Multilayer film |
| US7364777B1 (en) * | 2004-08-18 | 2008-04-29 | Multi-Color Corporation | Heat-transfer label assembly and method of using the same |
| JP4932752B2 (en) * | 2008-01-28 | 2012-05-16 | 富士フイルム株式会社 | Thermal transfer image-receiving sheet |
| CN102725141B (en) * | 2010-01-21 | 2015-09-30 | 日东电工株式会社 | Hyaline membrane and utilization thereof |
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