JPH0288293A - Thermal transfer ink image receiving sheet - Google Patents
Thermal transfer ink image receiving sheetInfo
- Publication number
- JPH0288293A JPH0288293A JP63239729A JP23972988A JPH0288293A JP H0288293 A JPH0288293 A JP H0288293A JP 63239729 A JP63239729 A JP 63239729A JP 23972988 A JP23972988 A JP 23972988A JP H0288293 A JPH0288293 A JP H0288293A
- Authority
- JP
- Japan
- Prior art keywords
- calcium carbonate
- thermal transfer
- receiving layer
- sheet
- image
- 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.)
- Granted
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 55
- 239000002245 particle Substances 0.000 claims abstract description 40
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000011164 primary particle Substances 0.000 claims abstract description 5
- 238000004438 BET method Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 29
- 235000010216 calcium carbonate Nutrition 0.000 description 19
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 239000000049 pigment Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 239000003086 colorant Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000008120 corn starch Substances 0.000 description 2
- 229940099112 cornstarch Drugs 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 1
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229910002029 synthetic silica gel Inorganic materials 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Paper (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はサーマルヘッドからの加熱によりインクシート
から熱溶融インク画像を転写させる熱転写プリンターに
用いるインク画像受容シートに関するものである０本発
明のインク画像受容シートは、濃度階調を用いるフルカ
ラー画像転写に有用なもので、高濃度、均一、高解像度
の鮮明なインク画像を受容記録することができる。Detailed Description of the Invention [Industrial Application Field] The present invention relates to an ink image receiving sheet used in a thermal transfer printer that transfers a hot melt ink image from an ink sheet by heating from a thermal head. The image-receiving sheet is useful for full-color image transfer using density gradation, and is capable of receiving and recording clear ink images of high density, uniformity, and high resolution.
最近サーマルヘッドを用いた熱溶融インク転写プリンタ
ーや、昇華染料転写プリンターは、鮮明な印字・画像が
可能であり、このため複写機、カラーコンピューターグ
ラフィックスプリンターおよびカラービデオプリンター
などのフルカラー用に注目されている。Recently, thermal melt ink transfer printers and sublimation dye transfer printers that use thermal heads are capable of producing clear prints and images, and are therefore attracting attention as full-color applications such as copiers, color computer graphics printers, and color video printers. There is.
熱溶融インク画像転写プリンターは、熱溶融インク層を
持つインクシートに受容シートを重ね合わせ、画像信号
に応じたサーマルヘッドからの加熱により、熱溶融した
インクの画像が、受容シートに転写されて、受容シート
上に所望の画像が形成される。モノクロのプリンターの
場合は、単色のインクを、また、カラープリンターの場
合は、イエロー、マゼンタ、シアン、黒などの色別のイ
ンク画像を転写し、これを重ね合わせて所望のカラー画
像を得るものである。この際、面ｆ階調、濃度階調を用
いる事により、熱転写記録方式によってフルカラー画像
を得ることができる。A hot-melt ink image transfer printer overlays a receptor sheet on an ink sheet with a hot-melt ink layer, and the image of the hot-melt ink is transferred to the receptor sheet by heating from a thermal head in response to an image signal. The desired image is formed on the receiving sheet. In the case of a monochrome printer, a single color ink is transferred, and in the case of a color printer, ink images of different colors such as yellow, magenta, cyan, and black are transferred, and these are superimposed to obtain the desired color image. It is. At this time, by using the surface f gradation and the density gradation, a full color image can be obtained by the thermal transfer recording method.
しかしながら、熱溶融転写方式プリンターにおいて、受
容シートの表面の平滑さ、インクと受容シートとの接着
性などにより得られる転写インク画像の鮮明さが左右さ
れ、高水準な印字・画像を可能にする。このため、それ
ぞれのタイプのプリンターに応じて、すぐれたインク画
像受容性を受容シートに付与するための様々な技術が公
表されている。However, in thermal melt transfer printers, the clarity of the transferred ink image is determined by the smoothness of the surface of the receiving sheet, the adhesion between the ink and the receiving sheet, etc., and enables high-quality printing and images. For this reason, various techniques have been published for imparting excellent ink image receptivity to receiving sheets, depending on each type of printer.
良好な転写インク画像を得る為に、ベック平滑度１０〜
５０秒程度の通常の上質紙を、スーパーカレンダー等を
用いて平滑化処理し、そのベック平滑度を１００秒以上
として、転写インク画像の鮮明度を改善することみ知ら
れている。In order to obtain a good transfer ink image, Bekk smoothness is 10~
It is known that the clarity of the transferred ink image can be improved by smoothing ordinary high-quality paper using a supercalender or the like to obtain a Beck smoothness of 100 seconds or more.
更に熱転写インク画像受容性を改善する為に、本発明者
らは、吸油性原料を含む被覆層を紙基材上に設けること
によって、濃淡ムラなく転写インク画像を得ること（特
開昭６２−１６２５８９）を提案した。In order to further improve the thermal transfer ink image receptivity, the present inventors provided a coating layer containing an oil-absorbing raw material on the paper base material to obtain a transfer ink image without uneven shading (Japanese Patent Application Laid-open No. 1986-62). 162589) was proposed.
サーマルヘッドからの溶融インクの転写量を連続的に制
御する濃度階調方式のプリンターを用い熱転写方式で中
間調フルカラー画像を得るなめには、受容シートへの要
求が一段と厳しいものとなっている。単にベック平滑度
が高いだけの上質紙では上記の要求に対して不十分であ
る。サーマルヘッドからの溶融インクの転写量を制御す
る方式のプリンターに用いる受容シートの場合、そのイ
ンク吸収量および吸収速度の均一性が、良好な画像再現
性を得るために不可欠である。通常の吸油性顔料を塗工
した受容シートを用いても、ハイライトから中間濃度に
おけるインクの濃度ムラ、重ねムラに起因する画像の濃
度むら、不安定な転写などがみられ、良好な中間調かつ
高解像度を再現する画像を得ることは困難であった。In order to obtain half-tone full-color images using a thermal transfer method using a density gradation method printer that continuously controls the amount of molten ink transferred from a thermal head, requirements for the receiving sheet have become even more stringent. High-quality paper that simply has a high Bekk smoothness is insufficient to meet the above requirements. In the case of a receiving sheet used in a printer that controls the amount of molten ink transferred from a thermal head, uniformity of the ink absorption amount and absorption speed is essential for obtaining good image reproducibility. Even when using a receiving sheet coated with ordinary oil-absorbing pigments, uneven ink density from highlights to intermediate densities, uneven image density due to overlapping unevenness, and unstable transfer are observed, resulting in poor intermediate tones. Moreover, it has been difficult to obtain images that reproduce high resolution.
かかる現状に鑑み、本発明の目的は、濃度階調熱転写で
も、基本的にはドツトが確実に転写されるならば高品位
な画像が得られるという認識に基づいて、１画素ごとの
濃度を確実に再現し、がっ中間濃度の重ねで形成される
各中間色の色調がムラなく再現されるように、鮮明な高
解像度のカラー画像を形成することのできる熱転写イン
ク画像受容シートを捉供することにある。In view of the current situation, the purpose of the present invention is to ensure the density of each pixel, based on the recognition that even with density gradation thermal transfer, a high-quality image can basically be obtained if the dots are transferred reliably. To provide a thermal transfer ink image-receiving sheet that can form clear, high-resolution color images so that the tone of each intermediate color formed by overlapping intermediate densities is evenly reproduced. be.
本発明の熱転写インク画像受容シートは、シート状基体
と、この基体の少なくとも１面上に形成された熱転写イ
ンク画像受容層とを有し、前記熱転写インク画像受容層
が１０〜９０重量％の炭酸カルシウム粒子と、１０〜９
０重量％の接着剤との混合物を主成分として形成されて
おり、前記炭酸カルシウム粒子が、多数の六方晶カルサ
イト−次粒子の融着体からなり、かつ０．７μｒａ〜１
，３μ蹟の重量平均粒子径と、１８ｍ２／ｇ以上のＢＥ
Ｔ法による比表面積とを有し、前記熱転写インク画像受
容層表面が１０００秒以上のベック平滑度を有すること
を特徴とするものである。The thermal transfer ink image-receiving sheet of the present invention has a sheet-like substrate and a thermal transfer ink image-receiving layer formed on at least one surface of the substrate, and the thermal transfer ink image-receiving layer contains 10 to 90% by weight of carbon dioxide. Calcium particles and 10-9
The calcium carbonate particles are composed of a fused body of a large number of hexagonal calcite-order particles, and have a particle size of 0.7 μra to 1
, a weight average particle size of 3 μm and a BE of 18 m2/g or more.
The thermal transfer ink image-receiving layer surface has a specific surface area determined by the T method, and the surface of the thermal transfer ink image-receiving layer has a Bekk smoothness of 1000 seconds or more.
本発明の熱転写インク画像受容シートを用いると、濃度
階調で中間調画像を再現する熱転写プリンターにおいて
、１ドツトごとに濃度が確実に再現され、中間色の色調
・濃度がムラなく再現され、即ち、全色にわたり低濃度
から高濃度まで鮮明な高解像度の画像を安定して得るこ
とができ、従来方式の問題点を改善できる。When the thermal transfer ink image-receiving sheet of the present invention is used, in a thermal transfer printer that reproduces halftone images in density gradation, the density is reliably reproduced for each dot, and the tone and density of intermediate colors are evenly reproduced. It is possible to stably obtain clear, high-resolution images across all colors from low density to high density, and the problems of the conventional method can be improved.
炭酸カルシウムは大きく分けて重質炭酸カルシウムと軽
質（沈降性）炭酸カルシウムに分けられる。Calcium carbonate can be broadly divided into heavy calcium carbonate and light (precipitated) calcium carbonate.
沈降性炭酸カルシウムは生石灰を水に溶解し、この中に
炭酸ガスを吹き込み反応させて得ることが出来る。沈降
性炭酸カルシウムは反応条件で粒子形状、粒径やその分
布、結晶系を変えることが出来る。沈降性炭酸カルシウ
ムの結晶系は、カルサイト（六方晶形）、アラブナイト
（斜方晶形）、バテライト（六方晶形）の３種類の分け
られる０本発明で用いられる炭酸カルシウム粒子は、特
殊な形状、すなわち六方晶系のカルサイト結晶である。Precipitated calcium carbonate can be obtained by dissolving quicklime in water and blowing carbon dioxide gas into the solution to cause a reaction. The particle shape, particle size, distribution, and crystal system of precipitated calcium carbonate can be changed depending on the reaction conditions. The crystal system of precipitated calcium carbonate can be divided into three types: calcite (hexagonal), arabite (orthorhombic), and vaterite (hexagonal).The calcium carbonate particles used in the present invention have a special shape, That is, it is a hexagonal calcite crystal.
通常用いられているカルサイト結晶は六角柱状、紡錐形
の粒子などであって、本発明に用いられる六方晶粒子と
は異なるものである。本発明に用いられる炭酸カルシウ
ム粒子は、多数の六方晶カルサイト−成粒子の融着体か
らなるものである。Calcite crystals commonly used are hexagonal columnar, conical, etc. particles, and are different from the hexagonal crystal particles used in the present invention. The calcium carbonate particles used in the present invention are composed of a large number of fused hexagonal calcite particles.
一般に各種の一次粒子と凝集などによる二次粒子の形状
によって、さらに粒径と吸油量、比表面積、細孔容積な
どの異なる炭酸カルシウムを得ることが出来る。しかし
通常の二次粒子は容易に一次粒子に分散されるものであ
るのに対して本発明の粒子は強固に融着していて、−成
粒子と同様に挙動するところに、本発明の特異な効果の
原因があると考えられる。In general, calcium carbonate having different particle sizes, oil absorption amounts, specific surface areas, pore volumes, etc. can be obtained depending on the shape of the various primary particles and the secondary particles formed by aggregation. However, while ordinary secondary particles are easily dispersed into primary particles, the particles of the present invention are firmly fused and behave in the same way as -solid particles, which is the unique feature of the present invention. It is thought that there is a cause for this effect.
熱転写プリンターで、炭酸カルシウム粒子と接着剤との
混合物を主成分とする受容層を設けた各種受容シートの
性能を比較評価した結果、粒径が大きく、吸油量が大き
い炭酸カルシウム粒子を含む受容層をもつ受容シートが
優れていることが判明した。その詳細な理由は明らかで
はないが、顔料粒子の複雑な形状が、スペーサーとなり
、適度な空間が受容層中に形成される為と推定される。As a result of a comparative evaluation of the performance of various types of receptor sheets with a receptor layer mainly composed of a mixture of calcium carbonate particles and an adhesive using a thermal transfer printer, we found that the receptor layer containing calcium carbonate particles with a large particle size and high oil absorption capacity. It has been found that a receptor sheet with . Although the detailed reason for this is not clear, it is presumed that the complex shape of the pigment particles acts as a spacer and forms an appropriate space in the receptor layer.
顔料の粒径が小さいと受容層表面が緻密になり転写イン
クの受容性が悪くなる。また重質炭酸カルシウムは結晶
形が不規則で吸油量も小さいためか、インクの転写が良
くないと推定される。If the particle size of the pigment is small, the surface of the receiving layer becomes dense and the transfer ink receptivity deteriorates. It is also presumed that ink transfer is poor in heavy calcium carbonate, probably because its crystal shape is irregular and its oil absorption is small.
顔料の粒径が小さいと、一般にその吸油量が大きくなり
、転写インクの受容性が良くなるが、それが小さすぎる
と、受容層の接着強度が低下し、このなめ実質的に受容
層として使用できなくなる。If the particle size of the pigment is small, its oil absorption will generally increase and the transfer ink receptivity will improve, but if it is too small, the adhesion strength of the receiving layer will decrease, and this lick will essentially be used as the receiving layer. become unable.
それ以外にも、粒径の小さい粒子が多くなると、得られ
る受容層の転写性、画質などが悪化すると思われる。従
って、本発明に用いられる炭酸カルシウム粒子として０
．７〜１．３μｍの重量平均粒子径と、１８ｍ’／ｇの
ＢＥＴ法による比表面積を有するものが用いられるので
ある。上述のように、平均粒子径が０．７μ−未満のと
きは、得られる受容層の接着強度が低くなるという不都
合を生じ、また１、３μ論を超えるときは、得られる受
容層において、転写不良、白抜けなどのような画像品質
の劣化を生ずる。また比表面積が１８ｍ２／ｇ未満のと
きは、得られる受容層において、インク受容性の低下、
および画像の接着性不良などという不都合を生ずる。In addition, if the number of particles with small particle size increases, it is thought that the transferability, image quality, etc. of the resulting receiving layer will deteriorate. Therefore, as calcium carbonate particles used in the present invention, 0
．． Those having a weight average particle diameter of 7 to 1.3 μm and a specific surface area determined by the BET method of 18 m'/g are used. As mentioned above, when the average particle size is less than 0.7μ, the adhesive strength of the resulting receptor layer becomes low, and when it exceeds 1 to 3μ, the transfer This causes deterioration in image quality such as defects and white spots. Furthermore, when the specific surface area is less than 18 m2/g, the ink receptivity decreases in the resulting receiving layer.
This also causes problems such as poor adhesion of images.
本発明の熱転写インク画像受容層は、シート状基体の片
面上、又は両面上に形成され、その主成分は１０〜９０
重量％の炭酸カルシウム粒子と１０〜９０重量％の接着
剤との混合物である。The thermal transfer ink image-receiving layer of the present invention is formed on one side or both sides of a sheet-like substrate, and the main component thereof is 10 to 90%
It is a mixture of % by weight calcium carbonate particles and 10-90% by weight adhesive.
接着剤としては、スチレン−ブタジェンゴム、アクリル
酸エステル共重合体、ポリビニルアルコール、およびデ
ンプンなどを用いることができる。As the adhesive, styrene-butadiene rubber, acrylic ester copolymer, polyvinyl alcohol, starch, etc. can be used.
本発明の受容層には、本発明の特定炭酸カルシウム粒子
に加えてその他の、例えば六角柱状、又は紡錘形などの
各種沈降性炭酸カルシウム、重質炭酸カルシウム、各種
のクレー、焼成りレー、二酸化チタン、水酸化アルミニ
ウム、タルク、珪酸カルシウム、硫酸カルシウム、珪酸
マグネシウム、合成無定形シリカ等の填料を併用しても
よい。In addition to the specific calcium carbonate particles of the present invention, the receptor layer of the present invention may contain other precipitated calcium carbonates such as hexagonal columnar or spindle-shaped, ground calcium carbonate, various clays, calcined clay, and titanium dioxide. , aluminum hydroxide, talc, calcium silicate, calcium sulfate, magnesium silicate, synthetic amorphous silica, and other fillers may be used in combination.
本発明に用いられるシート状基体は、それが受容層を担
持し得るシート状体である限り格別の限定はなく、中性
紙、木材パルプ及び顔料を用いた紙、合成繊維紙、合成
バルブ紙などのいづれを使用してもよい。一般にポリオ
レフィン樹脂を主成分とし、延伸した多層構造の合成紙
が特に好ましい、シートの坪量は２０〜１８０ｇ／ｍ”
、厚さは２０〜２００μｍであることが好ましい。The sheet-like substrate used in the present invention is not particularly limited as long as it is a sheet-like material that can support the receptor layer, and includes neutral paper, paper using wood pulp and pigments, synthetic fiber paper, and synthetic valve paper. You may use any of the following. In general, synthetic paper with a stretched multilayer structure containing polyolefin resin as the main component is particularly preferred, and the basis weight of the sheet is 20 to 180 g/m.
, the thickness is preferably 20 to 200 μm.
シート状基体上に受容層を形成するには、通常の塗布法
などを用いることができる。To form the receptor layer on the sheet-like substrate, a conventional coating method can be used.
本発明の受容シートにおいて、その受容層の表面は、１
０００秒以上のベック平滑度を有するものである。この
ような平滑度は、受容層表面にスーパーカレンダーなど
により平滑処理を施すことによって得られる。受容層表
面のベック平滑度がｉｏｏ。In the receiving sheet of the present invention, the surface of the receiving layer is 1
It has a Bekk smoothness of 000 seconds or more. Such smoothness can be obtained by smoothing the surface of the receptor layer using a supercalender or the like. The Bekk smoothness of the receptor layer surface is ioo.
秒未満のときは、得られる受容層において、インクの転
写不良による白抜け、濃度むら、および濃度低下などの
不都合を生ずる。When the time is less than 2 seconds, problems such as white spots, uneven density, and decreased density occur in the resulting receiving layer due to poor ink transfer.
次に実施例により本発明の熱転写インク画像受容シート
を更に説明する。なお実施例中「部」は固形分重量部を
表す。Next, the thermal transfer ink image receiving sheet of the present invention will be further explained with reference to Examples. In the examples, "parts" represent parts by weight of solid content.
実施例１
顔料として軽質炭酸カルシウム（商標：アルバカーＰＯ
（ＲＸ３３４６ ）、ファイザーＭＳＰ社製、平均粒子
径１．０μｍ、ＢＥＴ比表面積２０ＩＩ＋２／ｇ、吸油
量４８ｍ１７１００ｇ、六方晶形状の球形に近い一次粒
子が融着した複雑な形状のカルサイト）１００部に、ポ
リアクリル酸ソーダ１部および水５００部を加えて高速
分散を行い懸濁液とした後、これに接着剤としてポリビ
ニルアルコール（日本合成化学ＮＨ１７） ２０部を加
え塗工液を調製した。６５ｇ／ｍ２の上買紙に上記塗工
液を固形分塗布量２０ｇ／ｍ２になるように塗工し、乾
燥した後、形成された受容層表面をスーパーカレンダー
で平滑化し、ベック平滑度１５００秒とした。Example 1 Light calcium carbonate (trademark: Albuquer PO) as a pigment
(RX3346), manufactured by Pfizer MSP, average particle diameter 1.0 μm, BET specific surface area 20 II + 2 / g, oil absorption 48 m 17100 g, complex-shaped calcite with hexagonal primary particles fused together) 100 parts After adding 1 part of sodium polyacrylate and 500 parts of water to form a suspension by high-speed dispersion, 20 parts of polyvinyl alcohol (Nippon Gosei NH17) was added as an adhesive to prepare a coating solution. The above coating solution was applied to a 65 g/m2 coated paper to give a solid coating amount of 20 g/m2, and after drying, the surface of the formed receptor layer was smoothed with a super calender to give a Bekk smoothness of 1500 seconds. And so.
次に、濃度階調サーマルヘッドとして、京セラ社製、Ｋ
ＳＴ−８０−６ＭＰＤ１（商標）を用い、厚さ６部ｗ＋
のポリエステル基材シートの上に、石垣法によりイエロ
ー、マゼンタ、シアン３色のそれぞれのインク層を設け
たインクシートから、上記受容シート上に各濃度のイン
ク画像を熱転写させプリントした。この画像について、
■ハイライト濃度のムラ、■受容シートに転写されたイ
ンク画像の濃度（受容層のインク受容量を示す）濃度、
■受容層の大きなむらを見るために、ベタ画像のインク
のムラ、０色重ねのむらを示す重色の目視結果により、
受容シートの性能を評価した。Next, as a density gradation thermal head, K
Using ST-80-6MPD1 (trademark), thickness 6 parts w+
An ink image of each density was thermally transferred and printed onto the above-mentioned receiving sheet from an ink sheet on which ink layers of three colors of yellow, magenta, and cyan were provided by the Ishigaki method on a polyester base sheet. About this image
■Unevenness in highlight density, ■Density of the ink image transferred to the receiving sheet (indicating the amount of ink received by the receiving layer),
■To see large irregularities in the receiving layer, visually check the heavy colors that show unevenness in ink in solid images and unevenness in overlapping 0 colors.
The performance of the receptor sheet was evaluated.
その結果を第１表に示す。The results are shown in Table 1.
実施例２
実施例１と同様の操作を行った。但し、顔料として軽質
炭酸カルシウム（アルバカ−ＰＯ（ＲＸ３３４６）ファ
イザーＭＳＰ社製）１００部、接着剤として、ＳＢＲ（
ＪＳＲＣ６５９日本合成ゴム）２０部、澱粉（エースＡ
玉子コーンスターチ）５部を加えて塗料を製造し、ユボ
ＦＰＧ８０（８０μｍのポリオレフィンと無機顔料を主
成分とする１または２軸延伸した多層構造の合成紙）に
、固形分塗布量が１５ｇ／ｍ２になるように塗工して乾
燥した後、形成された受容層表面をスーパーカレンダー
で平滑化し、ベック平滑度を１２０００秒とした。Example 2 The same operation as in Example 1 was performed. However, as a pigment, 100 parts of light calcium carbonate (Albuquerque PO (RX3346) manufactured by Pfizer MSP) and as an adhesive, SBR (
JSRC659 Japan Synthetic Rubber) 20 parts, starch (Ace A
A coating material was prepared by adding 5 parts of egg-cornstarch) to Yubo FPG80 (uniaxially or biaxially stretched multilayer synthetic paper whose main components are 80 μm polyolefin and inorganic pigment) with a solid content coating amount of 15 g/m2. After coating and drying, the surface of the formed receptor layer was smoothed with a super calendar to give Bekk smoothness of 12,000 seconds.
得られた受容シートの性能を第１表に示す。The performance of the obtained receptor sheet is shown in Table 1.
比較例１
実施例１と同様の操作を行った。但し、顔料として軽質
炭酸カルシウム（商標：アルバフイル、ファイザ−ＭＳ
Ｐ（株）製、平均粒子径０．８μｍ、ＢＥＴ比表面積９
．５ｍ２７ｇ、吸油量４０ ｍ１７１００ｇの６角柱状
カルサイト）１００部と、接着剤としてポリビニルアル
コール（日本合成化学ＮＩ＋１７）２０部を用い、６５
ｇ／ｍ２の上買紙に、固形分塗布量が２０ｇ／ｍ２にな
るように塗工し、形成された受容層表面をスーパーカレ
ンダーで平滑化し、ベック平滑度２３００秒とした。Comparative Example 1 The same operation as in Example 1 was performed. However, light calcium carbonate (trademark: Albafil, Pfizer-MS) is used as a pigment.
Manufactured by P Co., Ltd., average particle diameter 0.8 μm, BET specific surface area 9
．． Using 100 parts of hexagonal columnar calcite (5 m 27 g, oil absorption 40 m 17 100 g) and 20 parts of polyvinyl alcohol (Nippon Gosei NI+17) as an adhesive, 65
The coating was applied to a 20 g/m2 paper with a solid coating amount of 20 g/m2, and the surface of the formed receptor layer was smoothed with a super calender to give a Bekk smoothness of 2300 seconds.
得られた受容シートの性能を第１表に示す。The performance of the obtained receptor sheet is shown in Table 1.
比較例２
実施例１と同様の操作を行った。但し、顔料として重質
炭酸カルシウム（商標：ホワイトンＰ１０、東洋ファイ
ンケミカル社製、平均粒子径２．０部１ｍ、吸油量２６
ｍ１７１００ｇ、Ｂ Ｅ Ｔ比表面積５．８ｍ２／ｇ
）１００部と、接着剤としてＳＢＲ（ＪＳＲＯ６５９日
本合成ゴム）２０部、澱粉〈エースＡ玉子コーンスター
チ）５部を用いて塗料を調製し、この塗料をユボＦＰＧ
８０ （８０μｍのポリオレフィンと無機顔料を主成分
とする１または２軸延伸した多層構造の合成紙）に、固
形分塗布量が１５ｇ／ｍ２になるように塗工して乾燥し
た後、形成された受容層表面をスーパーカレンダーで平
滑化し、そのベック平滑度を２００００秒とした。Comparative Example 2 The same operation as in Example 1 was performed. However, as a pigment, heavy calcium carbonate (trademark: Whiten P10, manufactured by Toyo Fine Chemical Co., Ltd., average particle size 2.0 parts 1 m, oil absorption amount 26
m17100g, BET specific surface area 5.8m2/g
), 20 parts of SBR (JSRO659 Japan Synthetic Rubber) as an adhesive, and 5 parts of starch (Ace A egg corn starch) to prepare a paint, and apply this paint to Yubo FPG.
80 (mono- or biaxially stretched multilayer synthetic paper containing 80 μm polyolefin and inorganic pigment as main components) was coated with a solid content of 15 g/m2 and dried. The surface of the receptor layer was smoothed with a supercalender, and the Bekk smoothness was set to 20,000 seconds.
得られた受容シートの性能を第１表に示す。The performance of the obtained receptor sheet is shown in Table 1.
表
〔発明の効果〕
本発明の熱転写インク画像受容シートは、画像鮮明度、
インク転写性、ドツト径の大きさ、濃度、均一性のいず
れも優秀なものであり、従来法の諸欠点を解消して高解
像度の熱転写プリンターを可能ならしめるものであり、
従って産業界に寄与するところが大である。Table [Effects of the Invention] The thermal transfer ink image receiving sheet of the present invention has excellent image clarity,
It has excellent ink transferability, dot diameter size, density, and uniformity, and eliminates the various drawbacks of conventional methods and enables high-resolution thermal transfer printers.
Therefore, it has a great potential to contribute to industry.
Claims (1)
成された熱転写インク画像受容層とを有し、前記熱転写
インク画像受容層が、１０〜９０重量％の炭酸カルシウ
ム粒子と、１０〜９０重量％の接着剤との混合物を主成
分として形成されており、前記炭酸カルシウム粒子が多
数の六方晶カルサイト系一次粒子の融着体からなり、か
つ０．７μｍ〜１．３μｍの重量平均粒子径と、１８ｍ
＾２／ｇ以上のＢＥＴ法による比表面積とを有し、前記
熱転写インク画像受容層表面が１０００秒以上のベック
平滑度を有する、ことを特徴とする熱転写インク画像受
容シート。1. A sheet-like substrate and a thermal transfer ink image-receiving layer formed on at least one surface of the substrate, wherein the thermal transfer ink image-receiving layer contains 10 to 90% by weight of calcium carbonate particles and 10 to 90% by weight of calcium carbonate particles. % by weight of an adhesive, and the calcium carbonate particles are composed of a fused body of a large number of hexagonal calcite primary particles, and have a weight average particle size of 0.7 μm to 1.3 μm. diameter and 18m
A thermal transfer ink image-receiving sheet having a specific surface area determined by a BET method of ^2/g or more, and a surface of the thermal transfer ink image-receiving layer having a Bekk smoothness of 1000 seconds or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63239729A JP2725802B2 (en) | 1988-09-27 | 1988-09-27 | Thermal transfer ink image receiving sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63239729A JP2725802B2 (en) | 1988-09-27 | 1988-09-27 | Thermal transfer ink image receiving sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0288293A true JPH0288293A (en) | 1990-03-28 |
| JP2725802B2 JP2725802B2 (en) | 1998-03-11 |
Family
ID=17049060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63239729A Expired - Fee Related JP2725802B2 (en) | 1988-09-27 | 1988-09-27 | Thermal transfer ink image receiving sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2725802B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110488A (en) * | 1983-11-21 | 1985-06-15 | Toshiba Corp | Thermal transfer recording paper and thermal transfer recording apparatus using the same |
| JPS6166686A (en) * | 1984-09-10 | 1986-04-05 | Oji Paper Co Ltd | Sheet for ink jet recording |
| JPS61284486A (en) * | 1985-06-11 | 1986-12-15 | Oji Paper Co Ltd | Receiving paper for thermal transfer printer |
| JPS6232085A (en) * | 1985-08-02 | 1987-02-12 | Ricoh Co Ltd | Transfer paper for melt-transfer type thermal recording |
-
1988
- 1988-09-27 JP JP63239729A patent/JP2725802B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110488A (en) * | 1983-11-21 | 1985-06-15 | Toshiba Corp | Thermal transfer recording paper and thermal transfer recording apparatus using the same |
| JPS6166686A (en) * | 1984-09-10 | 1986-04-05 | Oji Paper Co Ltd | Sheet for ink jet recording |
| JPS61284486A (en) * | 1985-06-11 | 1986-12-15 | Oji Paper Co Ltd | Receiving paper for thermal transfer printer |
| JPS6232085A (en) * | 1985-08-02 | 1987-02-12 | Ricoh Co Ltd | Transfer paper for melt-transfer type thermal recording |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2725802B2 (en) | 1998-03-11 |
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