JP3390184B2 - Image receiving paper for thermal transfer recording - Google Patents
Image receiving paper for thermal transfer recordingInfo
- Publication number
- JP3390184B2 JP3390184B2 JP04156192A JP4156192A JP3390184B2 JP 3390184 B2 JP3390184 B2 JP 3390184B2 JP 04156192 A JP04156192 A JP 04156192A JP 4156192 A JP4156192 A JP 4156192A JP 3390184 B2 JP3390184 B2 JP 3390184B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- image
- thermal transfer
- transfer recording
- same
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、熱転写記録方式を利用
した複写機、プリンタ及びファクシミリ等で使用される
熱転写記録用受像紙の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a thermal transfer recording image receiving paper used in a copying machine, a printer, a facsimile or the like which uses a thermal transfer recording system.
【０００２】[0002]
【従来の技術】近年、ＯＡ化の進展に伴い、電子写真方
式や熱転写記録方式等の各種記録方式を利用した複写機
やプリンタ等が広く使用されている。これらは、それぞ
れの用途に応じ、例えばＣＡＤ／ＣＡＭ等にも用いられ
ている。この場合、画像形成には有色の色材が用いられ
るが、通常色材を溶融、蒸発、昇華させて記録媒体、例
えば紙やフィルムシート等の上に転移させて粘着、吸
着、染着作用により記録画像を得るものである。2. Description of the Related Art In recent years, with the progress of office automation, copying machines and printers utilizing various recording systems such as an electrophotographic system and a thermal transfer recording system have been widely used. These are also used, for example, in CAD / CAM, etc., depending on their respective applications. In this case, a colored coloring material is used for image formation, but normally, the coloring material is melted, evaporated and sublimated and transferred onto a recording medium such as paper or a film sheet, and the adhesion, adsorption or dyeing action is performed. A recorded image is obtained.
【０００３】この種の記録方式の中で、色材で構成され
た熱溶融性インク層を有するインクリボンを熱により溶
融させ、色材を記録紙に転移させて粘着、吸着、染着作
用により記録像を得る熱溶融型の熱転写記録方式が最近
注目されている。この方式を用いる記録媒体として普通
紙から塗工紙タイプまで使用でき、その仕様を選ばない
のが特徴とされている。In this type of recording method, an ink ribbon having a heat-fusible ink layer composed of a coloring material is melted by heat, and the coloring material is transferred to a recording paper to be adhered, adsorbed, or dyed. Recently, a hot-melt type thermal transfer recording system for obtaining a recorded image has been attracting attention. As a recording medium using this method, plain paper to coated paper type can be used, and the feature is that the specifications are not selected.
【０００４】ところで、この熱転写記録方式において
も、他の記録方式と同様にフルカラー記録、高速記録、
鮮明画像、高解像度化等の要望が強まっている。例えば
カラー熱転写プリンタ等で単色或いは多色記録を行うに
は、イエロー、マゼンタ、シアン及びブラック等の色材
とワックス類や樹脂類等を有するインクリボンと記録紙
を組合せ、サーマルヘッドで印加されて記録紙上に転写
像が形成される。この場合、各色のインクが重なり合う
為に、記録紙として普通紙を用いると受像層表面の平滑
性に起因して、転写ムラやドット抜け等の欠点が生じ易
く難点となっている。By the way, also in this thermal transfer recording method, full color recording, high speed recording,
The demand for clear images and high resolution is increasing. For example, in order to perform single-color or multi-color recording with a color thermal transfer printer or the like, a color head such as yellow, magenta, cyan, and black, an ink ribbon containing waxes or resins, and recording paper are combined and applied with a thermal head. A transfer image is formed on the recording paper. In this case, since the inks of the respective colors are overlapped with each other, when plain paper is used as the recording paper, defects such as uneven transfer and missing dots are likely to occur due to the smoothness of the surface of the image receiving layer.
【０００５】このために、受像層表面の平滑性改良に関
して多くの提案がなされている。例えば、ベック平滑を
特定したもの（特開昭59−133092、同59−187892号）、
特定の顔料やバインダーを含有する熱転写受像層を設け
たもの（特開昭57-182487 、同59−182787号、同60−11
489 号、同60−110492号、同60−192690号、同61−2172
89号、同61−286187号、同63−21185 号）等が挙げられ
る。しかしながら、これら従来の方法の場合改良効果は
ある程度認められるものの、多色記録するときのカラー
インクの重なり部における転写ムラや色ズレ、或いは転
写ドット（インク）の抜けやドット形状の再現性不良等
による画像鮮明性の低下等は完全には解消されていな
い。従って、単にキャレンダ処理等を強化して平滑性を
高めたり、熱転写受像層に特定の顔料や接着剤を含有さ
せるだけでは不十分であり、上記欠点を解消してインク
の転写性やドット再現性に優れた熱転写記録用受像紙は
未だに得られていないのが実状である。For this reason, many proposals have been made for improving the smoothness of the image receiving layer surface. For example, those which specify Beck smoothing (Japanese Patent Laid-Open Nos. 59-133092 and 59-187892),
Those provided with a thermal transfer image-receiving layer containing a specific pigment or binder (JP-A-57-182487, JP-A-59-182787, JP-A-60-11)
No. 489, No. 60-110492, No. 60-192690, No. 61-2172
89, 61-286187, 63-21185) and the like. However, in the case of these conventional methods, although some improvement effects are recognized, transfer unevenness and color misregistration at overlapping portions of color inks in multicolor recording, transfer dot (ink) dropout, dot shape reproducibility failure, etc. The deterioration of the image clarity due to the phenomenon has not been completely solved. Therefore, it is not enough to simply enhance the calendering process to improve smoothness, or to add a specific pigment or adhesive to the thermal transfer image-receiving layer. In reality, no excellent image-receiving paper for thermal transfer recording has been obtained yet.
【０００６】また、最近の熱転写記録方式の利用分野の
拡大、特にカラープリンタの普及に伴って、各色のイン
クが重なり合う転写画像が、よりナチュラルな色合いを
再現し、カラー色調が鮮やかで、高品位で高画質な記録
画像が得られる記録紙の開発が急務な課題として注目さ
れている。Further, with the recent expansion of the field of use of the thermal transfer recording system, and particularly with the spread of color printers, the transferred image in which the inks of respective colors are superposed reproduces a more natural color tone, the color tone is vivid, and the quality is high. The development of recording paper that can obtain high-quality recorded images has attracted attention as an urgent issue.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、熱転写記録
用受像紙の色再現性・画像鮮明性の優れた転写画像に関
し、特に、インクの転写性・再現性・解像度・階調性・
高速記録性に優れ、転写ムラやドット抜けがなく、高い
コントラストを有し、よりナチュラルな色合いを再現
し、カラー色調が鮮やかな、フルカラー用の記録用紙適
性に優れた高品位で高画質な記録画像が得られる熱転写
記録用受像紙を提供するものである。SUMMARY OF THE INVENTION The present invention relates to a transferred image having excellent color reproducibility and image clarity of a thermal transfer recording image receiving paper, and particularly, to ink transferability, reproducibility, resolution, gradation
High-speed, high-quality, high-quality recording with excellent contrast, no transfer unevenness or missing dots, high contrast, more natural color reproduction, and vivid color tones, suitable for full-color recording paper. An image receiving paper for thermal transfer recording on which an image is obtained is provided.
【０００８】[0008]
【課題を解決するための手段】本発明の熱転写記録用受
像紙は、基紙と、顔料及び接着剤を主成分とする塗被組
成物である水性塗被液を、前記基紙に塗被又は含浸して
形成された受像層とを有する、熱溶融型熱転写記録方式
用熱転写記録用受像紙において、（１）パルプと、前記パルプの絶乾重量に対して６〜２
０重量％の、ＪＩＳ−Ｋ−６２２０に準拠する見掛比重
が０．１０〜０．５０ｇ／cm 3 の白色多孔質顔料とを含
み、
（２）受像紙のＴＡＰＰＩ ＵＭ−４０３に準拠するＺ
軸強度が０．０５〜０．１８ft・lbであり、且つ
（３）受像層表面がＪＩＳ−Ｚ−８７２９に規定された
表示方法に基づき螢光を含んだ状態で測定して下記及
びの条件：
Ｌ＊≧９０
1.7(ａ＊−1.5)2 ＋0.9(ｂ＊＋５)2＋0.6(ａ＊−1.5)（ｂ＊＋５）≦３０
を同時に満足することを特徴とするものである。The image-receiving paper for thermal transfer recording of the present invention comprises a base paper and an aqueous coating liquid, which is a coating composition containing a pigment and an adhesive as a main component, applied to the base paper. Alternatively, an image-receiving paper for thermal transfer recording for a heat-melting type thermal transfer recording system, which comprises an image-receiving layer formed by impregnation, (1) pulp and 6 to 2 with respect to the absolute dry weight of the pulp.
0% by weight, apparent specific gravity according to JIS-K-6220
Of 0.10 to 0.50 g / cm 3 of a white porous pigment.
Look, Z that conforms to TAPPI UM-403 (2) image-receiving paper
The axial strength is 0.05 to 0.18 ft.lb, and (3) the surface of the image receiving layer is measured under the condition that it contains fluorescence based on the display method specified in JIS-Z-8729. : L * ≧ 90 1.7 (a * -1.5) 2 +0.9 (b * + 5) 2 +0.6 (a * -1.5) (b * + 5) ≦ 30 are simultaneously satisfied. .
【０００９】[0009]
【作用】本発明者等は、上述の如き課題を解消し、高画
質が再現でき、高速記録は勿論、フルカラー用の記録用
紙適性に優れた熱転写記録用受像紙を得る方法について
鋭意検討を行った。その結果、所望の効果を得る為に
は、熱転写記録用受像紙の主要部である基紙に適度な空
隙とクッション性、柔軟性を付与し、インクリボンと記
録受像面との密着性や基紙の断熱効果を高めてインク受
理性を向上せしめることが極めて重要であり、更には、
受像層表面に増白効果を付与し、特に中間色調の色合い
がよりナチュラルな色合いを再現でき、鮮明でコントラ
ストの高い転写画像を得ることの重要性を見出した。The inventors of the present invention have made earnest studies on a method of solving the above-mentioned problems, capable of reproducing high quality images, and of obtaining high-speed recording as well as thermal transfer recording image-receiving paper excellent in suitability for full-color recording paper. It was As a result, in order to obtain the desired effect, the base paper, which is the main part of the thermal transfer recording image receiving paper, is provided with appropriate voids, cushioning properties and flexibility, and the adhesiveness between the ink ribbon and the recording image receiving surface or It is extremely important to increase the heat insulation effect of the paper and improve the ink acceptability.
It has been found that it is important to provide a whitening effect on the surface of the image receiving layer, particularly to reproduce a more natural color tone of intermediate tones, and to obtain a clear and high-contrast transferred image.
【００１０】即ち、熱転写記録受像層を構成する材料を
特定する以外に、特に受像紙のＺ軸方向への内部結合強
度（即ち、Ｚ軸強度）と受像層表面の反射特性を特定の
範囲に調整し、これらの条件の相乗効果によって、公知
の技術からは到底予想できない顕著な効果が得られるこ
とを突き止め、遂に本発明を完成するに至った。That is, in addition to specifying the material forming the thermal transfer recording image-receiving layer, the internal coupling strength (ie, Z-axis strength) in the Z-axis direction of the image-receiving paper and the reflection characteristic of the surface of the image-receiving layer are set within a specific range. The inventors have made adjustments and found that a synergistic effect of these conditions can provide a remarkable effect that cannot be expected from the known techniques, and finally the present invention has been completed.
【００１１】更には、受像紙のＺ軸強度を特定の範囲に
調整して紙層及び表面強度が強化されることにより、紙
粉に起因するトラブルを防止し、しかも、高速記録や多
色印字する際の転写ドットの欠損のない画質の優れた熱
転写記録用受像紙が得られることを見出したのである。Further, by adjusting the Z-axis strength of the image receiving paper within a specific range to strengthen the paper layer and surface strength, troubles caused by paper dust can be prevented, and high speed recording and multicolor printing can be performed. It was found that an image-receiving paper for thermal transfer recording, which is excellent in image quality and has no defects of transfer dots when it is formed, can be obtained.
【００１２】本発明の熱転写記録用受像紙の第１の特徴
は、TAPPI UM-403に準拠するＺ軸強度を0.05〜0.18ft・
lb、好ましくは0.06〜0.16ft・lbの範囲に調整すること
により、受像紙表面に適度な柔軟性とクッション性が付
与されて、インクリボンとの密着性が高まり、且つ紙層
と紙層、及び紙層と受像層となる水性塗被層との接着強
度の強い、転写ムラやドット抜け等のない均質で鮮明な
記録画像を得ることにある。The first feature of the image receiving paper for thermal transfer recording of the present invention is that the Z-axis strength according to TAPPI UM-403 is 0.05 to 0.18 ft.
lb, preferably by adjusting in the range of 0.06 ~ 0.16ft · lb, by imparting appropriate flexibility and cushioning to the surface of the image receiving paper, the adhesion with the ink ribbon is increased, and the paper layer and the paper layer, Another object is to obtain a homogeneous and clear recorded image having a high adhesive strength between the paper layer and the water-based coating layer serving as the image receiving layer and free from uneven transfer and missing dots.
【００１３】一般に熱転写記録用受像紙のＺ軸強度は0.
20ft・lb以上のものもあるが、このような従来の熱転写
記録用受像紙では、平滑性の良好な受像層表面が形成さ
れていてもクッション性や柔軟性が不十分である為、例
えばプラテンロールの押さえ圧によって受像紙表面とイ
ンクリボン、及びサーマルヘッドを圧接させて転写記録
する場合、受像紙表面とインクリボンとの密着性が不均
一となり、転写ムラやドット抜け等が生じて不均質な画
像しか得られず、画像品質が劣っていた。Generally, the Z-axis strength of an image receiving paper for thermal transfer recording is 0.
Some of them are 20 ft · lb or more, but such conventional thermal transfer recording image-receiving paper has insufficient cushioning and flexibility even if an image-receiving layer surface with good smoothness is formed. When transfer recording is performed by pressing the image receiving paper surface with the ink ribbon and the thermal head by the pressing pressure of the roll, the adhesion between the image receiving paper surface and the ink ribbon becomes non-uniform, resulting in uneven transfer and dot omission etc. However, the image quality was inferior.
【００１４】因みに、Ｚ軸強度が0.05ft・lb未満となる
と、本発明の所望とする紙層及び受像層表面の強度の強
い受像紙が得られず、紙粉発生を解消することができな
い。さらに、熱転写記録時にインクリボンと受像紙とが
引き離される際に受像層表面が転写インクと共に捲り上
がり、転写ドット（インク）が欠損して画質低下の原因
となるので好ましくない。一方、Ｚ軸強度が0.18ft・lb
を越えると、前述の通りクッション性や柔軟性の乏しい
受像紙しか得られず、本発明の所望とする均質で鮮明な
記録画像は得られない。Incidentally, if the Z-axis strength is less than 0.05 ft.lb, an image receiving paper having high strength of the surface of the paper layer and the image receiving layer desired in the present invention cannot be obtained, and the generation of paper dust cannot be eliminated. Further, when the ink ribbon and the image receiving paper are separated from each other during thermal transfer recording, the surface of the image receiving layer rolls up together with the transfer ink, and transfer dots (inks) are lost, which causes deterioration of image quality, which is not preferable. On the other hand, the Z-axis strength is 0.18ft ・ lb
If it exceeds the above range, only an image receiving paper having poor cushioning property and flexibility is obtained as described above, and a uniform and clear recorded image desired by the present invention cannot be obtained.
【００１５】熱転写記録用受像紙のＺ軸強度を本発明の
範囲に調節する方法としては、パルプ繊維の種類、配合
量、叩解条件、填料の種類や添加量、紙力増強剤の種類
や添加量、澱粉やポリビニルアルコール、ポリアクリル
アミド等の表面サイズ剤或いは表面紙力増強剤の塗被、
抄紙機での脱水条件、ウェットプレス条件、乾燥条件の
調節等が挙げられ、これらの方法を適宜選択することに
よって適性な範囲に調節される。The method for adjusting the Z-axis strength of the image-receiving paper for thermal transfer recording within the range of the present invention is as follows: pulp fiber type, blending amount, beating condition, filler type and addition amount, paper strength enhancer type and addition. Amount, coating of surface sizing agents such as starch, polyvinyl alcohol, polyacrylamide or surface paper strength enhancers,
Examples include adjustment of dehydration conditions in a paper machine, wet press conditions, drying conditions, and the like, which can be adjusted to an appropriate range by appropriately selecting these methods.
【００１６】本発明の第２の特徴は、JIS-Z-8729に規定
された表示法〔Ｌ＊、ａ＊、ｂ＊〕に従い、螢光を含ん
だ状態で測定した熱転写記録用受像紙の表面の色調が、
下記及びの条件を同時に満たす範囲に調整されるこ
とにある。
Ｌ＊≧９０
1.7(ａ＊−1.5)2 ＋0.9(ｂ＊＋５)2＋0.6(ａ＊−1.5 )(ｂ＊＋５）≦３０The second feature of the present invention is that the image-receiving paper for thermal transfer recording is measured in a state of containing fluorescent light according to the display method [L *, a *, b *] defined in JIS-Z-8729. The surface color is
It is to be adjusted within the range that satisfies the following conditions and. L * ≧ 90 1.7 (a * -1.5) 2 +0.9 (b * + 5) 2 +0.6 (a * -1.5) (b * + 5) ≦ 30
【００１７】色をみる為には当然のことながら照明光源
が必要である。光源には自然光の他に、人工光源として
白熱電球、蛍光灯、ハロゲン灯、キセノン灯、水銀灯等
があり、物の色調（色合い）は照明条件や観察条件によ
って違った見え方をする。一般的には、やわらかい自然
光の当たる場所やライトアップした蛍光灯等のもとで色
調が観察される。An illumination light source is naturally required to see colors. In addition to natural light, the light source includes incandescent lamps, fluorescent lamps, halogen lamps, xenon lamps, mercury lamps, etc. as artificial light sources, and the color tone (color shade) of objects varies depending on the illumination conditions and observation conditions. Generally, the color tone is observed under a place where there is soft natural light, a fluorescent lamp that is illuminated, or the like.
【００１８】熱転写で得た転写画像の色調は記録紙表面
の色調（以下、これを反射特性と呼称する）に大きく左
右され、例えば記録紙の反射特性が不十分であると得ら
れた転写画像は冴えの無い画質となる。また、転写画像
を観察する場所も、通常はやわらかい自然光の当たる場
所やライトアップした照明のある場所であるために、光
源の紫外線量によって螢光発色の度合いが異なり、観察
する場所によっては受像紙表面の反射特性に影響され
て、転写画像の色調に相当のずれが生じることも事実で
ある。The color tone of the transferred image obtained by thermal transfer is largely influenced by the color tone of the surface of the recording paper (hereinafter referred to as the reflection characteristic). For example, the transfer image obtained when the reflection characteristic of the recording paper is insufficient. Has a dull image quality. Also, the place where the transferred image is observed is usually a place where there is soft natural light or a place where there is illuminated light, so the degree of fluorescence coloring differs depending on the amount of ultraviolet light from the light source, and depending on the place of observation, the image receiving paper It is also a fact that the color tone of the transferred image is considerably deviated due to the influence of the reflection characteristic of the surface.
【００１９】紙などの反射物体の反射特性を測定する方
法としては、一般にJIS-Z-8722（２度視野における物体
色の測定法）がよく知られているが、螢光発色を有する
ものについては適用されていない。本発明者等は、熱転
写記録方式で得られた転写画像を評価する場合に、螢光
発色を加味した状態で色調を評価する事がその実体を正
確に表現する上で極めて重要であることを突き止め、さ
らには、転写画像に大きな影響を及ぼす熱転写記録用受
像紙表面の反射特性を、螢光発色を含んだ状態で調整す
ることの重要性を見出した。JIS-Z-8722 (a method for measuring an object color in a two-degree visual field) is generally well known as a method for measuring the reflection characteristic of a reflective object such as paper. Has not been applied. The present inventors have found that when evaluating a transfer image obtained by a thermal transfer recording method, it is extremely important to evaluate the color tone in a state in which the fluorescent coloring is added in order to accurately express the substance. It was found that it is important to adjust the reflection characteristics of the surface of the image-receiving paper for thermal transfer recording, which has a great influence on the transferred image, in a state including the fluorescent coloring.
【００２０】ところで、よりナチュラルな色を再現し、
鮮明でコントラストの高い転写画像を得るためには、受
像紙を限り無く "白”に近付けることが望ましいことは
言うまでもない。しかしながら、本発明者等の検討結果
によれば、本発明の所望の転写画像を得るためには、受
像紙表面の反射特性が鮮やかでやや青味がかっている場
合にのみ可能であることが判明し、上記の条件式及び
を同時に満たすことの重要性を見出したのである。な
お、条件式の左辺の式を仮に色相指数Ｓと呼称する
と、Ｓは受像紙の色相を特性づける指標となるものであ
る。By the way, reproducing more natural colors,
It goes without saying that it is desirable to bring the image receiving paper as close to "white" as possible in order to obtain a clear and high-contrast transferred image. However, according to the results of studies by the present inventors, it has been found that the desired transfer image of the present invention can be obtained only when the reflection characteristic of the surface of the image receiving paper is vivid and slightly bluish. However, they have found the importance of simultaneously satisfying the above conditional expressions and. If the expression on the left side of the conditional expression is called the hue index S, S is an index for characterizing the hue of the image receiving paper.
【００２１】Ｌ＊の値は明度指数と呼称し、色の明るさ
を示す。通常０〜100 の範囲で表示され、０が理想的な
黒色で 100は理想的な白色を意味する。また、ａ＊、ｂ
＊の値は色度（クロマティクネス指数とも言う）と呼称
し、各々−100 〜＋100 の範囲で表示される。色度ａ＊
は、プラス側で数値が大きければ赤の度合いが強く、マ
イナス側の数値が大きければ緑色の度合いが増加するこ
とを示す。一方、色度ｂ＊は、プラス側で数値が大きけ
れば黄色の度合いが強く、マイナス側の数値が大きけれ
ば青色の度合いが増すことを示す。一般に、ａ＊を横軸
にとり、ｂ＊を縦軸にとった座標の位置で色相を表わ
す。ａ＊，ｂ＊が何れも０の場合、その色は無彩色であ
ることを示す。The value of L * is called the lightness index and indicates the brightness of the color. It is usually displayed in the range of 0 to 100, 0 means ideal black and 100 means ideal white. Also, a *, b
The value of * is called chromaticity (also called chromaticness index) and is displayed in the range of -100 to +100. Chromaticity a *
Indicates that the larger the value on the positive side, the stronger the degree of red, and the larger the value on the negative side, the greater the degree of green. On the other hand, the chromaticity b * indicates that the larger the value on the positive side, the stronger the degree of yellow, and the larger the value on the negative side, the greater the degree of blue. Generally, a hue is represented by a coordinate position with a * on the horizontal axis and b * on the vertical axis. When both a * and b * are 0, it means that the color is achromatic.
【００２２】因みに、Ｌ＊の値が90未満では、受像紙に
転写された画像は黒っぽく見え、鮮明性が劣る。一方、
Ｓが30を越えると、受像紙は "白さ" というよりはむし
ろ色相、例えば赤味とか青味をより強く感じるようにな
り、転写画像の本来の色調を受像紙が正確に再現するこ
とができなくなる。そのために、本発明ではＬ＊≧90、
Ｓ≦30であることが重要である。そして、より好ましく
はＬ＊≧93、Ｓ≦20に、最も好ましくはＬ＊≧93、Ｓ≦
15に調整することが望ましい。Incidentally, when the value of L * is less than 90, the image transferred to the image receiving paper looks black and the sharpness is poor. on the other hand,
If S exceeds 30, the image receiving paper will more strongly feel the hue, for example, redness or blueness, rather than "whiteness", and the image receiving paper can accurately reproduce the original color tone of the transferred image. become unable. Therefore, in the present invention, L * ≧ 90,
It is important that S ≦ 30. And more preferably L * ≧ 93, S ≦ 20, and most preferably L * ≧ 93, S ≦ 20.
It is desirable to adjust to 15.
【００２３】熱転写記録用受像紙表面の反射特性を調節
する方法としては、着色剤及び／又は蛍光増白剤を受像
紙を構成する紙料中に添加する方法、或いは基紙上に塗
被又は含浸して受像層を形成させる水性塗被液中に着色
剤及び／又は蛍光増白剤を添加して適宜調節する方法等
が簡便である。As a method of adjusting the reflection characteristics of the surface of the image-receiving paper for thermal transfer recording, a method of adding a colorant and / or a fluorescent whitening agent to the paper material constituting the image-receiving paper, or coating or impregnation on the base paper A convenient method is to add a colorant and / or a fluorescent whitening agent to the aqueous coating liquid to form the image-receiving layer, and adjust accordingly.
【００２４】その場合の着色剤としては、例えばC.I.ダ
イレクトバイオレット１、同７、同９、同12、同35、同
47、同48、同51、同90、同94、C.I.ダイレクトブルー
１、同２、同６、同８、同15、同22、同25、同71、同7
6、同78、同86、同98、同108 、同120 、同158 、同192
、同194 、同195 、同196 、同199 、同200 、同201
、同202 、同203 、同207 、同236 、同237 、同246
、C.I.ダイレクトレッド１、同２、同４、同９、同1
1、同13、同20、同23、同24、同28、同31、同33、同3
7、同39、同44、同46、同62、同75、同79、同80、同8
1、同83、同84、同89、同113、同197 、同224 、同225
、同226 、同227 、同230 C.I.ダイレクトイエロー1
2、同26、同28、同44、同50、同85、同86、同88、同100
、同 142、C.I.ダイレクトオレンジ８、同39、同107
、C.I.ダイレクトブラウン２、同６、同44、同173、同
195 、C.I.ダイレクトグリーン６、同33、同37等の直接
染料。C.I.アシッドバイオレット35、同41、同49、C.I.
アシッドブルー９、同22、同40、同59、同102 、同120
、C.I.アシッドレッド１、同32、同37、同51、同52、
同80、同87、同92、同94、C.I.アシッドイエロー11、同
17、同23、同25、C.I.アシッドオレンジ７、C.I.アシッ
ドブラウン14、C.I.アシッドグリーン３、同25等の酸性
染料。C.I.ベーシックバイオレット１、同14、C.I.ベー
シックブルー１、同５、同７、同９、同25、同26、C.I.
ベーシックレッド１、同２、同12、C.I.ベーシックイエ
ロー11、同14、C.I.ベーシックオレンジ２、同15、C.I.
ベーシックブラウン１、C.I.ベーシックグリーン１、同
４等の塩基性染料等の水溶性染料が挙げられる。Examples of the colorant in that case include CI direct violet 1, the same 7, the same 9, the same 12, the same 35, the same.
47, the same 48, the same 51, the same 90, the same 94, CI Direct Blue 1, the same 2, the same 6, the same 8, the same 15, the same 22, the same 25, the same 71, the same 7
6, 78, 86, 98, 108, 120, 158, 192
, 194, 195, 196, 199, 200, 201
, Ibid 202, ibid 203, ibid 207, ibid 236, ibid 237, ibid 246
, CI Direct Red 1, same 2, same 4, same 9, same 1
1, the same 13, the same 20, the same 23, the same 24, the same 28, the same 31, the same 33, the same 3
7, 39, 44, 46, 62, 75, 79, 80, 8
1, 83, 84, 89, 113, 197, 224, 225
, 226, 227, 230 230 CI Direct Yellow 1
2, the same 26, the same 28, the same 44, the same 50, the same 85, the same 86, the same 88, the same 100
, 142, CI Direct Orange 8, 39, 107
, CI Direct Brown 2, the same 6, the same 44, the same 173, the same
Direct dyes such as 195, CI Direct Green 6, 33 and 37. CI Acid Violet 35, 41, 49, CI
Acid Blue 9, the same 22, the same 40, the same 59, the same 102, the same 120
, CI Acid Red 1, 32, 37, 51, 52,
Same 80, same 87, same 92, same 94, CI Acid Yellow 11, same
Acid dyes 17, 17, 23, 25, CI Acid Orange 7, CI Acid Brown 14, CI Acid Green 3, 25, etc. CI Basic Violet 1, the same 14, CI Basic Blue 1, the same 5, the same 7, the same 9, the same 25, the same 26, CI
Basic Red 1, Same 2, Same as 12, CI Basic Yellow 11, Same as 14, CI Basic Orange 2, Same as 15, CI
Water-soluble dyes such as basic dyes such as Basic Brown 1, CI Basic Green 1 and 4 are mentioned.
【００２５】更に、C.I.ピグメントバイオレット１、同
３、同19、同23、同38、C.I.ピグメントブルー１、同
２、同15、C.I.ピグメントレッド２、同３、同５、同2
2、同23、同81、同112 、同114 、同146 、同150 、同1
70 、C.I.ピグメントイエロー１、同３、同５、同12、
同13、同14、同17、同55、同81、同83、同97、C.I.ピグ
メントオレンジ１、同13、同16、C.I.ピグメントグリー
ン４、同７、同36等のアゾ系顔料、ジスアゾ系顔料、ナ
フトール系顔料、フタロシアニン系顔料、キナクリドン
系顔料、ジオキサジン系顔料、キノフタロン系顔料、イ
ソインドリン系顔料、スレン系顔料、アンスラキノン系
顔料、ペリノン系顔料、染付レーキ顔料等の有機着色顔
料やC.I.ピグメントバイオレット16、C.I.ピグメントブ
ルー27、同28、同29、C.I.ピグメントレッド101 、同10
4 、同105 、同106 、同108 、C.I.ピグメントイエロー
同34、同35、同37、同42、同53、C.I.ピグメントオレン
ジ21、C.I.ピグメントグリーン17、同18等の鉄系顔料、
鉛系顔料、カドミウム系顔料、クロム系顔料、コバルト
系顔料、群青、紺青等の無機着色顔料を使用することが
できる。Further, CI Pigment Violet 1, the same 3, the same 19, the same 23, the same 38, CI Pigment Blue 1, the same 2, the same 15, CI Pigment Red 2, the same 3, the same 5, the same 2
2, 23, 81, 112, 114, 146, 150, 1
70, CI Pigment Yellow 1, the same 3, the same 5, the same 12,
Azo pigments such as 13, 13, 14, 17, 55, 81, 83, 97, CI Pigment Orange 1, 13, 16, CI Pigment Green 4, 7, and 36, and disazo pigments Organic coloring pigments such as pigments, naphthol pigments, phthalocyanine pigments, quinacridone pigments, dioxazine pigments, quinophthalone pigments, isoindoline pigments, slene pigments, anthraquinone pigments, perinone pigments, dyed lake pigments, etc. CI Pigment Violet 16, CI Pigment Blue 27, 28, 29, CI Pigment Red 101, 10
4, 105, 106, 108, CI Pigment Yellow 34, 35, 37, 42, 53, CI Pigment Orange 21, CI Pigment Green 17, iron pigments such as 18.
Inorganic coloring pigments such as lead pigments, cadmium pigments, chromium pigments, cobalt pigments, ultramarine blue and dark blue can be used.
【００２６】これらの染料及び着色顔料の中で、パルプ
繊維に対して強い親和力を有する直接染料やアゾ系顔
料、ジスアゾ系顔料、ナフトール系顔料、フタロシアニ
ン系顔料、ジオキサジン系顔料等の有機着色顔料は色調
が鮮やかで、発色性、耐光性に優れているため、好まし
く使用される。Among these dyes and color pigments, organic dyes such as direct dyes having a strong affinity for pulp fibers, azo pigments, disazo pigments, naphthol pigments, phthalocyanine pigments, dioxazine pigments, etc. It is preferably used because of its vivid color tone and excellent color development and light resistance.
【００２７】蛍光増白剤としては、例えばC.I.フルオレ
スセント９、同24、同30、同32、同37、同52、同54、同
84、同85、同86、同87、同90、同91、同92、同104 、同
121、同134 、同153 、同164 、同166 、同167 、同168
、同169 、同172 、同173、同174 、同175 、同176 、
同177 、同178 、同216 、同218 、同223 、同224、同2
25 、同231 、同239 、同240 、同241 、同242 、同264
等のスチルベン系、ジスチルベン系、クマリン系、ピ
ラゾリン系、イミダゾール系、オキサゾール系、トリア
ゾール系、ナフタルイミド系等の蛍光増白剤が例示され
る。そして、これらの中でも4,4'−ビス（トリアジニル
アミノ）スチルベン−2,2'−ジスルホン酸誘導体からな
る蛍光増白剤は、蛍光発色の発現効果が優れ、よりナチ
ュラルな白さを再現できるために好ましく使用でき、特
に4,4'−ビス〔２−（2,5 −ジスルホアニリノ）−４−
ビス（２−ヒドロキシエチル）アミノ−1,3,5 −トリア
ジニル−６−アミノ〕スチルベン−2,2'−ジスルホン酸
ナトリウムなる構造式で示される蛍光増白剤は、通常の
蛍光増白剤に見られるような使用量を増すにつれて紙が
黄変化し、増白効果が低下する現象、所謂クウェンティ
ング現象がないため、蛍光増白の向上効果が飛躍的に発
揮され、しかも紙料や水性塗被液に対して優れた安定性
をしめすために最も好ましく使用される。Examples of the fluorescent whitening agent include CI Fluorescent 9, 24, 30, 32, 37, 52, 54 and 54.
84, same 85, same 86, same 87, same 90, same 91, same 92, same 104, same
121, 134, 153, 164, 166, 167, 168
, 169, 172, 173, 174, 175, 176,
177, 178, 216, 218, 223, 224, 2
25, same 231, same 239, same 240, same 241, same 242, same 264
Examples thereof include stilbene-based, distilbene-based, coumarin-based, pyrazoline-based, imidazole-based, oxazole-based, triazole-based, and naphthalimide-based optical brighteners. And among these, the fluorescent whitening agent consisting of 4,4'-bis (triazinylamino) stilbene-2,2'-disulfonic acid derivative is excellent in the effect of expressing fluorescent color and reproduces a more natural whiteness. Therefore, it can be preferably used, and particularly 4,4′-bis [2- (2,5-disulfoanilino) -4-
The optical brightener represented by the structural formula of bis (2-hydroxyethyl) amino-1,3,5-triazinyl-6-amino] stilbene-2,2'-sodium disulfonate is an ordinary optical brightener. As there is no phenomenon in which the whitening effect of the paper turns yellow and the whitening effect decreases, that is, the so-called quanting phenomenon, the effect of improving the fluorescent whitening is dramatically demonstrated, and the paper material and the water-based coating are used. It is most preferably used because it exhibits excellent stability against liquids.
【００２８】これらの着色剤及び／又は蛍光増白剤（以
後、着色剤及び／又は蛍光増白剤のことを単にブライト
ニング剤と呼称する）を受像紙用基紙を構成する紙料中
に添加する場合は、一般にはスラリー状となった紙料
（パルプ繊維）に填料や各種抄紙用内添助剤と共に添加
使用される。なお、ブライトニング剤を添加する方法、
添加場所や添加手順等については特に限定されるもので
はなく、また、その添加量についても、所望とする受像
層表面の反射特性に応じて調整されるものであり、特に
限定されるものではない。通常は絶乾パルプ繊維に対し
て０．０００１〜０．１重量％程度の範囲で添加され
る。These colorants and / or optical brighteners (hereinafter, the colorants and / or optical brighteners are simply referred to as brightening agents) are added to the stock material constituting the base paper for the image receiving paper . In this case, it is generally added to a slurry-like stock material (pulp fiber) together with a filler and various papermaking internal additives. Incidentally, a method of adding a brightening agent,
The place of addition, the procedure of addition, etc. are not particularly limited, and the addition amount is also adjusted according to the desired reflection characteristics of the surface of the image receiving layer, and is not particularly limited. . Usually, it is added in the range of about 0.0001 to 0.1% by weight based on the bone-dry pulp fiber.
【００２９】基紙用填料としては、当業界で一般に公知
公用の白色顔料であり、特に限定されるものではなく、
例えばタルク、カオリン、クレー、デラミカオリン、焼
成カオリン、重質炭酸カルシウム、軽質炭酸カルシウ
ム、炭酸マグネシウム、二酸化チタン、水酸化アルミニ
ウム、水酸化カルシウム、水酸化マグネシウム、水酸化
亜鉛、硫酸マグネシウム、珪酸カルシウム、硫酸カルシ
ウム、ケイソウ土、焼成ケイソウ土、シリカ、ホワイト
カーボン、アルミノ珪酸塩、セリサイト、ベントナイ
ト、スメクタイト等の鉱物質填料やポリスチレン樹脂、
尿素樹脂、アクリル樹脂、メラミン樹脂、ベンゾグアナ
ミン樹脂等の微粒子、及び微小中空粒子等の有機合成填
料等の１種或いは２種以上の填料を適宜選択して併用す
ることもでき、更には古紙やブローク等に含まれる填料
も再生使用することも可能である。なお、粉末白色度が
７５％以上、好ましくは８０％以上の填料は記録紙の白
色度の向上効果に有効であるために望ましく使用でき
る。The base paper filler is a publicly known white pigment generally known in the art and is not particularly limited.
For example, talc, kaolin, clay, derami kaolin, calcined kaolin, heavy calcium carbonate, light calcium carbonate, magnesium carbonate, titanium dioxide, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, magnesium sulfate, calcium silicate, Mineral filler such as calcium sulfate, diatomaceous earth, calcined diatomaceous earth, silica, white carbon, aluminosilicate, sericite, bentonite, and smectite, and polystyrene resin,
One kind or two or more kinds of fillers such as fine particles of urea resin, acrylic resin, melamine resin, benzoguanamine resin, and organic synthetic fillers such as hollow microparticles can be appropriately selected and used in combination. It is also possible to recycle the filler contained in etc. A filler having a whiteness of powder of 75% or more, preferably 80% or more is effectively used for the effect of improving the whiteness of recording paper, and thus can be desirably used.
【００３０】更に、本発明者の検討結果によれば、これ
らの填料の中にあって、ＪＩＳ−Ｋ−６２２０に準拠す
る見掛比重（以後、単に見掛比重と呼称する）が０．１
０〜０．５０ｇ／cm3 、好ましくは０．１５〜０．４０
ｇ／cm3 である多孔質顔料は、その粒子中に大量の空気
を包含しており、このような顔料（填料）がパルプ繊維
間に都合良く内在することによって適度な空隙とクッシ
ョン性を基紙に付与させることが可能となり、その結果
として基紙の断熱特性が著しく向上し、且つ不透明度や
平滑度が効果的に改善され、熱転写記録用受像紙として
の品質特性が飛躍的に向上する。そのため、このような
多孔質顔料の使用は本発明の一つの特徴である。Furthermore, according to the results of studies by the present inventor, among these fillers, the apparent specific gravity (hereinafter simply referred to as apparent specific gravity) according to JIS-K-6220 is 0.1.
0 to 0.50 g / cm 3 , preferably 0.15 to 0.40
A porous pigment having a g / cm 3 contains a large amount of air in its particles, and such a pigment (filler) is conveniently contained between pulp fibers to provide a proper void and cushioning property. It can be applied to paper, and as a result, the heat insulating properties of the base paper are significantly improved, and the opacity and smoothness are effectively improved, and the quality properties as a thermal transfer recording image receiving paper are dramatically improved. . Therefore, the use of such a porous pigment is one of the features of the present invention.
【００３１】因みに、多孔質顔料の中でも、見掛比重が
0.50ｇ/cm3を越える場合は多孔質顔料のもつ特性が半減
して基紙の空隙が減少し、緻密な紙層構造となり、基紙
の断熱効率が急激に低下する。その結果、転写インクの
受理性や定着性が劣るようになり、本発明の所望とする
転写ムラやドット抜けのない鮮明で画像品位の優れた熱
転写記録用受像紙を得ることができない。また、光の散
乱に必要な細かな空隙が減少するので不透明度の低下が
著しい。他方、0.10ｇ/cm3未満の多孔質顔料の場合は基
紙の空隙が増加し、断熱特性が必要以上に付与されるた
めにサーマルヘッドからの熱が受像層表面で冷却され難
くなり、蓄熱されて転写インクの滲みやブリッジング現
象が誘発され画像品質が低下するようになる。また、紙
層強度が極端に弱くなるために、転写ドットの欠損や紙
粉に起因する画質の低下を招くことになり好ましくな
い。Incidentally, among the porous pigments, the apparent specific gravity is
If it exceeds 0.50 g / cm 3 , the properties of the porous pigment are reduced by half, the voids in the base paper are reduced, and a dense paper layer structure is formed, resulting in a sharp decrease in the heat insulation efficiency of the base paper. As a result, the receptivity and fixing property of the transfer ink are deteriorated, and it is not possible to obtain the image receiving paper for thermal transfer recording which is clear and has excellent image quality without the transfer unevenness and dot omission desired in the present invention. In addition, since the fine voids necessary for light scattering are reduced, the opacity is significantly reduced. On the other hand, in the case of a porous pigment of less than 0.10 g / cm 3, the voids in the base paper increase and the heat insulation properties are given more than necessary, making it difficult for the heat from the thermal head to be cooled on the surface of the image receiving layer, and heat storage. As a result, the bleeding of the transfer ink and the bridging phenomenon are induced and the image quality deteriorates. Further, since the paper layer strength becomes extremely weak, it is not preferable because the transfer dots are lost and the image quality is deteriorated due to the paper dust.
【００３２】また、上記特定の多孔質顔料であっても、
使用量が基紙を構成する絶乾パルプに対し、６重量％未
満の場合には本発明の所望の効果が得られず、一方、20
重量％を越えると、基紙の紙層強度が弱くなり、紙粉が
発生して画質に悪影響を与えるために好ましくない。Further, even with the above specific porous pigment,
When the amount used is less than 6% by weight based on the absolutely dry pulp constituting the base paper, the desired effect of the present invention cannot be obtained, while
When the content is more than 5% by weight, the strength of the paper layer of the base paper becomes weak and paper dust is generated to adversely affect the image quality, which is not preferable.
【００３３】なお、多孔質顔料の具体例としては、例え
ばホワイトカーボン、無定形シリカ、微粒子状珪酸カル
シウム、微粒子状炭酸マグネシウム、微粒子状アルミ
ナ、ゼオライト、アルミノ珪酸マグネシウム、焼成カオ
リン、ケイソウ土、焼成ケイソウ土、単一粒子の複数個
凝集してなるウニ状或いは球状の軽質炭酸カルシウム等
が挙げられる。そして、これらの中から、前記特定条件
を満足する多孔質顔料が使用される。これらの顔料の中
でも、特にウニ状或いは球状の軽質炭酸カルシウムは転
写インクの定着性やドット形状の再現性が優れ、しか
も、多色重ね刷り時の色再現性が良好であるために色ズ
レのない階調性に優れた熱転写記録用受像紙が得られる
ため、好ましく使用できる。Specific examples of the porous pigment include white carbon, amorphous silica, fine particle calcium silicate, fine particle magnesium carbonate, fine particle alumina, zeolite, magnesium aluminosilicate, calcined kaolin, diatomaceous earth and calcined diatom. Examples thereof include soil and sea urchin-like or spherical light calcium carbonate formed by agglomeration of a plurality of single particles. Then, among these, a porous pigment satisfying the specific conditions is used. Among these pigments, sea urchin-like or spherical light calcium carbonate is particularly excellent in the fixability of the transfer ink and the reproducibility of the dot shape, and moreover, the color reproducibility at the time of multicolor overprinting is good, so that color misregistration occurs. Since an image-receiving paper for thermal transfer recording having excellent gradation is obtained, it can be preferably used.
【００３４】パルプ繊維としては、特に限定されるもの
ではなく、通常の木材パルプ繊維を主体とするものであ
り、必要に応じ、ケナフ、竹、麻等の様な非木材パルプ
繊維やポリエステルやポリオレフィン等の合成パルプ、
或いは合成繊維、さらにはガラス繊維、セラミック繊維
等の無機質繊維も使用できる。また、パルプ繊維の種
類、製法等については特に限定されず、例えばＫＰ、Ｓ
Ｐ、ＡＰ法等によって得られる針葉樹パルプや広葉樹パ
ルプ等の化学パルプ繊維やＳＣＰの他に、各種高歩留パ
ルプ（SGP 、BSGP、BCTMP 、CTMP、CGP 、TMP 、RGP 、
CMP 等）或いはＤＩＰ等の古紙パルプ又は再生パルプ等
が挙げられる。なお、これらの中にあって、例えば楓、
樺、樫、楢、ブナ、アスペン、ユーカリ等の広葉樹を原
料として得る化学パルプ繊維は、優れたクッション性と
断熱性を有し、インクの受理性向上に著しく効果がある
ために、特に好ましく使用できる。The pulp fiber is not particularly limited, but is mainly composed of ordinary wood pulp fiber, and if necessary, non-wood pulp fiber such as kenaf, bamboo, hemp, etc., polyester or polyolefin. Synthetic pulp,
Alternatively, synthetic fibers and further inorganic fibers such as glass fibers and ceramic fibers can be used. The type of pulp fiber, manufacturing method, etc. are not particularly limited, and examples include KP and S
In addition to chemical pulp fibers such as softwood pulp and hardwood pulp obtained by the P and AP methods and SCP, various high-yield pulps (SGP, BSGP, BCTMP, CTMP, CGP, TMP, RGP,
CMP, etc.) or recycled paper pulp such as DIP, recycled pulp, etc. Among these, for example, Kaede,
Chemical pulp fibers obtained from hardwood such as birch, oak, oak, beech, aspen, and eucalyptus have excellent cushioning properties and heat insulating properties, and are particularly effective in improving ink acceptability, and therefore are particularly preferably used. it can.
【００３５】なお、紙料中には主成分のパルプ繊維や填
料の他に、本発明の所望の効果を損なわない範囲で、従
来から当業界で使用されている各種の歩留向上剤、濾水
性向上剤、紙力増強剤、サイズ剤等の抄紙用内添助剤が
必要に応じて適宜選択して使用される。さらに、pH調整
剤、消泡剤、ピッチコントロール剤、スライムコントロ
ール剤等の抄紙用内添助剤を適宜添加することも可能で
ある。In addition to pulp fibers and fillers as the main components, the stock contains various retention aids and filters conventionally used in the art, as long as the desired effects of the present invention are not impaired. An internal additive for papermaking such as a water improver, a paper strength enhancer, and a sizing agent is appropriately selected and used as necessary. Further, it is also possible to appropriately add an internal additive for papermaking such as a pH adjusting agent, a defoaming agent, a pitch control agent and a slime control agent.
【００３６】なお、抄紙方法については特に限定され
ず、例えば抄紙ｐＨが4.５付近である酸性抄紙法、炭酸
カルシウム等のアルカリ性填料を主成分として含み抄紙
ｐＨを約６の弱酸性〜約９の弱アルカリ性とする、所謂
中性抄紙法等全ての抄紙方法に適用することができる。
また、抄紙機も長網抄紙機、ツインワイヤー抄紙機、丸
網抄紙機、ヤンキー抄紙機等を適宜使用できる。The papermaking method is not particularly limited. For example, an acidic papermaking method having a papermaking pH of about 4.5, a weak pH of about 6 to about 9 with an alkaline filler such as calcium carbonate as a main component. The present invention can be applied to all papermaking methods such as the so-called neutral papermaking method in which the above is weakly alkaline.
Further, as the paper machine, a Fourdrinier paper machine, a twin wire paper machine, a round wire paper machine, a Yankee paper machine, or the like can be appropriately used.
【００３７】ブライトニング剤を基紙上に塗布又は含浸
する場合は、例えば前出のブライトチング剤の中から単
独又は併用し、水で希釈して水溶液或いは水分散液を調
整して基紙上に塗布又は含浸する方法を可能とするもの
であるが、より好ましくは、接着剤を含む水性塗被液中
に添加して行う方法が有効である。この場合、ブライト
ニング剤の塗被量は、所望とする受像層表面の反射特性
に応じて調整されるものであり、特に限定されるもので
はないが、通常は絶乾重量で片面当たり0.0001〜 1.0ｇ
／ｍ2 程度である。When the brightening agent is applied or impregnated on the base paper, for example, one of the brightening agents described above may be used alone or in combination, and the brightening agent may be diluted with water to prepare an aqueous solution or an aqueous dispersion, and then applied on the base paper. Although the method of impregnation is possible, more preferably, the method of adding it to an aqueous coating liquid containing an adhesive is effective. In this case, the coating amount of the brightening agent is adjusted according to the desired reflection characteristics of the image receiving layer surface, and is not particularly limited, but usually 0.0001 to 1.0 per one side in absolute dry weight. g
/ M 2 or so.
【００３８】水性塗被液中の塗被組成物として接着剤を
含むことが好ましいが、この場合の接着剤とは水溶性及
び／又は水分散性の高分子化合物のことを指すものであ
り、特に限定されるものではない。例えば、酸化澱粉、
酵素変性澱粉、熱化学変性澱粉、エステル化澱粉等の澱
粉類やカルボキシメチルセルロース、ヒドロキシエチル
セルロース、ゼラチン、カゼイン、大豆蛋白、天然ゴム
等の天然或いは半合成高分子化合物；ポリビニルアルコ
ール、ポリ酢酸ビニル、ポリビニルピロリドン、ポリビ
ニルブチラール、ポリプロピレン、ポリエチレン、ポリ
（メタ）アクリルアミド、ポリ（メタ）アクリル酸エス
テル、ポリエステル、ポリアミド、ポリウレタン等の合
成樹脂やスチレン・ブタジエン系、メチルメタクリレー
ト・ブタジエン系、アクリロニトリル・ブタジエン系、
クロロプレン系等の合成ゴム等の合成高分子化合物等の
接着剤が挙げられ、これらの中から熱転写記録用受像紙
の品質目標に応じて１種或いは２種以上が適宜選択して
使用される。It is preferable to include an adhesive as a coating composition in the aqueous coating liquid, and the adhesive in this case means a water-soluble and / or water-dispersible polymer compound, It is not particularly limited. For example, oxidized starch,
Enzyme-modified starch, thermochemically modified starch, starch such as esterified starch, and natural or semi-synthetic polymer compounds such as carboxymethyl cellulose, hydroxyethyl cellulose, gelatin, casein, soybean protein, natural rubber; polyvinyl alcohol, polyvinyl acetate, polyvinyl Pyrrolidone, polyvinyl butyral, polypropylene, polyethylene, poly (meth) acrylamide, poly (meth) acrylic acid ester, polyester, polyamide, polyurethane and other synthetic resins, styrene-butadiene-based, methylmethacrylate-butadiene-based, acrylonitrile-butadiene-based,
Adhesives such as synthetic polymer compounds such as chloroprene-based synthetic rubbers may be mentioned, and one or more of them may be appropriately selected and used according to the quality target of the image receiving paper for thermal transfer recording.
【００３９】また、インクの受理性を高め、所望とする
高画質を発現できる熱転写記録用受像紙を得るために
は、上記接着剤の他に、さらに顔料を含む水性塗被液を
塗被又は含浸して受像層を設けるのが好ましい。Further, in order to obtain an image-receiving paper for thermal transfer recording which can enhance the acceptability of the ink and express a desired high image quality, in addition to the above-mentioned adhesive, an aqueous coating liquid further containing a pigment is applied or It is preferable to provide the image receiving layer by impregnation.
【００４０】この場合の顔料としては、一般塗被紙に用
いられる各種の顔料、例えばカオリン、デラミカオリ
ン、水酸化アルミニウム、サチンホワイト、軽質炭酸カ
ルシウム、重質炭酸カルシウム、硫酸カルシウム、硫酸
バリウム、二酸化チタン、焼成カオリン、タルク、酸化
亜鉛、炭酸亜鉛、アルミナ、ケイソウ土、酸化マグネシ
ウム、炭酸マグネシウム、シリカ、ホワイトカーボン、
アルミノ珪酸マグネシウム、コロイダルシリカ、ベント
ナイト、ゼオライト、セリサイト等の鉱物質顔料やポリ
スチレン樹脂、尿素樹脂、メラミン樹脂、アクリル樹
脂、ベンゾグアナミン樹脂等の微粒子、及び微小中空粒
子やその他の有機系顔料等が挙げられ、これらの中から
熱転写記録用受像紙の品質目標に応じて１種又は２種以
上を適宜組合わせて使用される。なお、顔料の量は、固
形分対比で０〜95重量％、好ましくは10〜90重量％の範
囲で配合されることが本発明の所望の効果を得る上で好
ましい。また、顔料を含有させる場合には、粉末白色度
が75％以上、好ましくは80％以上のものを使用すると記
録紙の白色度を向上させることができるので望ましい。As the pigment in this case, various pigments used for general coated paper, for example, kaolin, deramikaolin, aluminum hydroxide, satin white, light calcium carbonate, heavy calcium carbonate, calcium sulfate, barium sulfate, and dioxide. Titanium, calcined kaolin, talc, zinc oxide, zinc carbonate, alumina, diatomaceous earth, magnesium oxide, magnesium carbonate, silica, white carbon,
Magnesium aluminosilicate, colloidal silica, bentonite, zeolite, mineral pigments such as sericite, polystyrene resin, urea resin, melamine resin, acrylic resin, fine particles such as benzoguanamine resin, and fine hollow particles and other organic pigments. Among them, one kind or a combination of two or more kinds is appropriately used according to the quality target of the image receiving paper for thermal transfer recording. The amount of the pigment is preferably 0 to 95% by weight, preferably 10 to 90% by weight based on the solid content in order to obtain the desired effect of the present invention. Further, when a pigment is contained, it is desirable to use a powder having a whiteness of 75% or more, preferably 80% or more, since the whiteness of the recording paper can be improved.
【００４１】水性塗被液中には、これらの他に各種助
剤、例えば界面活性剤、ｐＨ調節剤、粘度調節剤、柔軟
剤、光沢付与剤、分散剤、流動変性剤、導電防止剤、ワ
ックス類、安定化剤、紫外線吸収剤、帯電防止剤、架橋
剤、サイズ剤、消泡剤、耐水化剤、可塑剤、滑剤、防腐
剤、香料等が必要に応じて適宜使用することもできる。In the aqueous coating liquid, in addition to these, various auxiliaries such as a surfactant, a pH adjusting agent, a viscosity adjusting agent, a softening agent, a glossing agent, a dispersing agent, a flow modifier, an antistatic agent, and the like. Waxes, stabilizers, UV absorbers, antistatic agents, cross-linking agents, sizing agents, defoaming agents, water-proofing agents, plasticizers, lubricants, preservatives, fragrances, etc. can be appropriately used as necessary. .
【００４２】かくして調製される塗被液は、基紙の片面
又は両面に塗被又は含浸されるものであるが、塗被量又
は含浸量としては、本発明の所望とする効果を満足させ
る限りにおいて不必要に多くする必要はなく、一般的に
は乾燥重量で片面当たり0.5〜15ｇ／ｍ2 、好ましくは
１〜10ｇ／ｍ2 程度である。なお、基紙上に水性塗被液
を塗被又は含浸して受像層を形成するに当たり、水性塗
被液の１度塗りの層にするか、或いは２層以上の層にし
て多層構造にするかは特に限定するものではない。ま
た、多層構造にする場合には、各々の層の塗被液の組成
が同一である必要はなく、要求される品質レベルに応じ
て適宜調整されるものである。The coating liquid thus prepared is coated or impregnated on one side or both sides of the base paper. The coating amount or impregnation amount is not limited as long as the desired effect of the present invention is satisfied. In general, it is not necessary to increase the amount unnecessarily, and the dry weight is generally 0.5 to 15 g / m 2 per side, preferably 1 to 10 g / m 2 . When forming or forming an image-receiving layer by coating or impregnating a base paper with an aqueous coating solution, whether the layer is a single coating of the aqueous coating solution or a multilayer structure with two or more layers. Is not particularly limited. Further, in the case of a multi-layer structure, the composition of the coating liquid for each layer does not have to be the same, and is appropriately adjusted according to the required quality level.
【００４３】なお、塗被又は含浸用の装置としては特に
限定されるものではなく、例えばブレードコータ、エヤ
ーナイフコータ、ロールコータ、リバースロールコー
タ、バーコータ、カーテンコータ、ダイスロットコー
タ、グラビアコータ、チャンプレックスコータ、ブラシ
コータ、ツーロール或いはメータリングブレード式のサ
イズプレスコータ、ビルブレードコータ、ショートドウ
ェルコータ、ゲートロールコータ、スプレーやプレウェ
ット法、フロート法等の装置が適宜使用できる。勿論、
これらの装置はオンマシンでもオフマシンコータであっ
てもよい。The coating or impregnating device is not particularly limited, and examples thereof include a blade coater, an air knife coater, a roll coater, a reverse roll coater, a bar coater, a curtain coater, a die slot coater, a gravure coater, and a chanter. A plex coater, a brush coater, a two-roll or metering blade type size press coater, a bill blade coater, a short dwell coater, a gate roll coater, an apparatus such as a spray or pre-wet method, or a float method can be appropriately used. Of course,
These devices may be on-machine or off-machine coaters.
【００４４】かくして調製される熱転写記録用受像紙
は、通常の乾燥工程や表面処理工程等で平滑化処理がな
され、水分が３〜10重量％、好ましくは４〜８重量％程
度の用紙に仕上げられる。なお、熱転写記録用受像紙を
平滑化処理する際は、通常のスーパーキャレンダ、グロ
スキャレンダ、ソフトキャレンダ等の平滑化処理装置が
適宜使用される。特に、50℃以上、好ましくは80℃以上
に加熱された金属ロールと加熱又は非加熱の弾性ロール
で構成された加圧ニップ間に通紙して平滑化処理すれ
ば、更に望ましい結果が得られる。オンマシンやオフマ
シンで適宜用いられ、加圧装置の形態、加圧ニップの数
等も通常の平滑化処理装置に準じて適宜調節される。The thus-prepared image-receiving paper for thermal transfer recording is subjected to a smoothing treatment in a usual drying step or surface treatment step, and is finished to have a water content of 3 to 10% by weight, preferably 4 to 8% by weight. To be When smoothing the image-receiving paper for thermal transfer recording, a smoothing device such as a normal super calender, gloss calender or soft calender is appropriately used. Particularly, if a smoothing treatment is carried out by passing the paper through a pressure nip composed of a metal roll heated to 50 ° C. or higher, preferably 80 ° C. or higher and a heated or unheated elastic roll, further desirable results can be obtained. . It is appropriately used in on-machine or off-machine, and the form of the pressurizing device, the number of pressurizing nips, and the like are appropriately adjusted according to a normal smoothing processing device.
【００４５】[0045]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明するが、勿論これらに限定されるものではない。な
お、例中の「部」及び「％」は、特に断らない限りそれ
ぞれ「重量部」及び「重量％」を示す。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. In addition, "part" and "%" in an example show "weight part" and "weight%", respectively, unless there is particular notice.
【００４６】実施例１
〔基紙の調製〕ＮＢＫＰ（材質／スプルース；フリーネ
ス＝ＣＳＦ520ml)10部、ＬＢＫＰ（材質／メイプル；フ
リーネス＝ＣＳＦ480ml)90部を配合したパルプスラリー
に、填料として焼成カオリン〔見掛比重＝0.30ｇ/cm2〕
15部、ロジンエマルジョンサイズ剤 1.5部、硫酸バンド
２部を添加して紙料を調製した。この紙料をツインワイ
ヤー抄紙機を用いて抄紙し、次いで、サイズプレス装置
で酸化澱粉の塗布量が乾燥重量で２ｇ／ｍ2 となるよう
に塗布、乾燥させて米坪が85ｇ／ｍ2 の基紙を得た。Example 1 [Preparation of base paper] 10 parts of NBKP (material / spruce; freeness = CSF 520 ml) and 90 parts of LBKP (material / maple; freeness = CSF 480 ml) were mixed in a pulp slurry and calcined kaolin as a filler [see Hanging specific gravity = 0.30 g / cm 2 ]
A stock was prepared by adding 15 parts, 1.5 parts of a rosin emulsion sizing agent, and 2 parts of a sulfuric acid band. The paper stock was made using a twin wire paper machine, and then applied with a size press machine so that the applied amount of oxidized starch was 2 g / m 2 in dry weight, and dried to obtain a tsubo of 85 g / m 2 . I got a base paper.
【００４７】〔塗被液の調製〕紡錘状軽質炭酸カルシウ
ム90部（固形分；以下同様）と酸化チタン10部にポリア
クリル酸ソーダ 0.4部（顔料に対する固形分比；以下同
様）を加え、コーレス分散機を用いて水分散して顔料ス
ラリーを調製した。この顔料スラリーにポリビニルアル
コール15部、スチレン・ブタジエン系合成ゴム４部、ス
チルベン系蛍光増白剤（C.I.フルオレスセント 264）３
部を添加、攪拌し、更に水を加えて、固形分濃度が50重
量％の塗被液を調製した。[Preparation of coating liquid] Spindle-shaped light calcium carbonate 90 parts (solid content; the same as below) and sodium polyacrylate 0.4 part (solid content ratio to pigment; same below) were added to 10 parts of titanium oxide, and Water was dispersed using a disperser to prepare a pigment slurry. Add 15 parts of polyvinyl alcohol, 4 parts of styrene-butadiene type synthetic rubber, stilbene type optical brightener (CI Fluorescent 264) to this pigment slurry.
Parts were added and stirred, and water was further added to prepare a coating liquid having a solid content concentration of 50% by weight.
【００４８】〔受像層の形成〕この塗被液を上記の基紙
の両面に、その塗被量の合計が乾燥重量で10ｇ／ｍ2と
なるようにバーコータを用いて塗被し、温度が50℃の金
属ロールと弾性ロールで構成された加圧ニップ（ニップ
数11、ニップ線圧 200Kg／cm）に通紙して米坪が95ｇ／
ｍ2 の熱転写記録用受像紙を得た。[Formation of Image Receiving Layer] This coating liquid is coated on both sides of the above-mentioned base paper by using a bar coater so that the total coating amount becomes 10 g / m 2 in dry weight, and the temperature is adjusted. Paper is passed through a pressure nip (nip number 11, nip linear pressure 200 Kg / cm) consisting of a metal roll and elastic roll at 50 ° C
An image receiving paper for thermal transfer recording of m 2 was obtained.
【００４９】実施例２
実施例１の塗被液の調製において、スチルベン系蛍光増
白剤を２部添加に減量し、及びジオキサジン系有機着色
顔料（C.I.ピグメントバイオレット23）を新たに0.01部
添加して塗被液を調製した以外は、実施例１と同様にし
て米坪が95ｇ／ｍ2 の熱転写記録用受像紙を得た。Example 2 In the preparation of the coating liquid of Example 1, the amount of the stilbene fluorescent whitening agent was reduced to 2 parts, and 0.01 part of a dioxazine organic coloring pigment (CI Pigment Violet 23) was newly added. An image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained in the same manner as in Example 1 except that the coating liquid was prepared in the same manner as in Example 1.
【００５０】実施例３
実施例２の基紙の調製において、填料をタルク〔見掛比
重＝0.75ｇ/cm2〕の18部添加に変更し、及び塩基性染料
（C.I.ベーシックバイオレット１）を新たに0.0004部添
加して紙料を調製し、更に塗被液の調製において、スチ
ルベン系蛍光増白剤の 1.2部添加に減量して塗被液を調
製た以外は、実施例２と同様にして米坪が95ｇ／ｍ2 の
熱転写記録用受像紙を得た。Example 3 In the preparation of the base paper of Example 2, the filler was changed to the addition of 18 parts of talc [apparent specific gravity = 0.75 g / cm 2 ] and the basic dye (CI Basic Violet 1) was newly added. Was prepared in the same manner as in Example 2 except that 0.0004 parts of stilbene fluorescent whitening agent was added to the stock solution to prepare a paper stock, and the amount of the stilbene optical brightener was reduced to 1.2 parts. An image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained.
【００５１】実施例４
実施例２の基紙の調製において、パルプスラリーに填料
としてウニ状軽質炭酸カルシウム〔見掛比重＝0.38ｇ/c
m2〕を14部、直接染料（C.I.ダイレクトバイオレット3
5）を0.003 部、硫酸バンドを 0.5部、カチオン性澱粉
を 1.5部、アルケニル無水コハク酸を 1.0部、及び歩留
向上剤を0.05部添加にそれぞれ変更して紙料を調製した
以外は、実施例２と同様にして米坪が95ｇ／ｍ2 の熱転
写記録用受像紙を得た。Example 4 In the preparation of the base paper of Example 2, sea urchin-like light calcium carbonate [apparent specific gravity = 0.38 g / c] was added to the pulp slurry as a filler.
m 2 ], 14 parts, direct dye (CI Direct Violet 3
5) 0.003 part, sulfuric acid band 0.5 part, cationic starch 1.5 part, alkenyl succinic anhydride 1.0 part, and retention improver 0.05 parts In the same manner as in Example 2, an image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained.
【００５２】実施例５
実施例４において、填料をウニ状軽質炭酸カルシウムの
７部添加に減量して基紙を調製し、次に塗被液の調製に
おいて、スチルベン系蛍光増白剤の 1.2部添加に減量、
及びジオキサジン系有機着色顔料の0.02部添加に増量
し、更にナフトール系有機着色顔料（C.I.ピグメントレ
ッド 150）を新たに0.01部添加して塗被液を調製した以
外は、実施例４と同様にして米坪が95ｇ／ｍ2 の熱転写
記録用受像紙を得た。Example 5 In Example 4, base material was prepared by reducing the amount of filler to 7 parts of sea urchin light calcium carbonate, and then 1.2 parts of stilbene optical brightener was prepared in the preparation of coating liquid. Weight loss for addition,
And 0.02 part of the dioxazine-based organic color pigment was added to the amount, and 0.01 part of the naphthol-based organic color pigment (CI Pigment Red 150) was newly added to prepare a coating liquid. An image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained.
【００５３】実施例６
実施例４において、填料を無定型シリカ〔見掛比重＝0.
20ｇ/cm2〕と紡錘状軽質炭酸カルシウム〔見掛比重＝0.
59ｇ/cm2〕の混合填料（混合比１：１）の20部添加に変
更し、更に直接染料（C.I.ダイレクトレッド81）を新た
に0.0005部添加して基紙を調製し、次に塗被液の調製に
おいて、ジオキサジン系有機着色顔料を0.04部添加に増
量して塗被液を調製した以外は、実施例４と同様にして
米坪が95ｇ／ｍ2 の熱転写記録用受像紙を得た。Example 6 In Example 4, the filler was amorphous silica (apparent specific gravity = 0.
20 g / cm 2 ] and spindle-shaped light calcium carbonate [apparent specific gravity = 0.
59 g / cm 2 ] mixed filler (mixing ratio 1: 1) was changed to 20 parts, and 0.0005 parts of direct dye (CI Direct Red 81) was newly added to prepare a base paper, and then coated. In preparation of the liquid, an image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained in the same manner as in Example 4 except that the coating liquid was prepared by increasing the amount of the dioxazine-based organic color pigment to 0.04 part. .
【００５４】比較例１
実施例１において、蛍光増白剤を添加しないで塗被液を
調製した以外は、実施例１と同様にして米坪が95ｇ／ｍ
2 の熱転写記録用受像紙を得た。Comparative Example 1 The same procedure as in Example 1 was repeated except that the fluorescent whitening agent was not added to prepare a coating solution.
An image receiving paper for thermal transfer recording of No. 2 was obtained.
【００５５】比較例２
実施例３において、塩基性染料を 0.001部添加に増量し
て紙料を調製し、次に塗被液の調製において、蛍光増白
剤を添加しないで塗被液を調製した以外は、実施例３と
同様にして米坪が95ｇ／ｍ2 の熱転写記録用受像紙を得
た。Comparative Example 2 In Example 3, a stock was prepared by adding 0.001 parts of the basic dye to prepare a coating solution, and then a coating solution was prepared without adding a fluorescent whitening agent in the preparation of the coating solution. An image receiving sheet for thermal transfer recording having a basis weight of 95 g / m 2 was obtained in the same manner as in Example 3 except for the above.
【００５６】比較例３
実施例１において、填料をカオリン〔見掛比重＝0.60ｇ
/cm2〕の25部添加に変更して基紙を調製し、更に塗被液
の調製において、スチルベン系蛍光増白剤の１部添加に
減量し、及びフタロシアニン系有機着色顔料（C.I.ピグ
メントグリーン７）を新たに0.01部添加して塗被液を調
製した以外は、実施例１と同様にして米坪が95ｇ／ｍ2
の熱転写記録用受像紙を得た。Comparative Example 3 In Example 1, the filler was kaolin (apparent specific gravity = 0.60 g).
/ cm 2 ] was changed to 25 parts by weight to prepare the base paper, and in the preparation of the coating liquid, the amount was reduced to 1 part by addition of the stilbene-based optical brightening agent, and the phthalocyanine-based organic coloring pigment (CI Pigment Green 7) newly added 0.01 parts of a coating except that the liquid was prepared, in example 1 the basis weight in the same manner as in the 95 g / m 2
To obtain an image receiving paper for thermal transfer recording.
【００５７】比較例４
実施例５において、填料を紡錘状軽炭〔見掛比重＝0.59
ｇ/cm2〕の16部添加に変更して基紙を調製し、次に塗被
液の調製において、ナフトール系有機着色顔料の0.05部
添加に増量して塗被液を調製した以外は、実施例５と同
様にして米坪が95ｇ／ｍ2 の熱転写記録用受像紙を得
た。Comparative Example 4 In Example 5, the filler was spindle-shaped light carbon [apparent specific gravity = 0.59].
g / cm 2 ] was changed to 16 parts to prepare a base paper, and then in the preparation of the coating liquid, the coating liquid was prepared by increasing the amount of the naphthol-based organic color pigment to 0.05 part. In the same manner as in Example 5, an image receiving paper for thermal transfer recording having a basis weight of 95 g / m 2 was obtained.
【００５８】比較例５
比較例４において、染料を直接染料（C.I.ダイレクトブ
ルー86）の 0.002部添加に変更して紙料を調製し、次に
塗被液の調製において、蛍光増白剤の３部添加に増量
し、及びナフトール系有機着色顔料を添加しないで塗被
液を調製した以外は、比較例４と同様にして米坪が95ｇ
／ｍ2 の熱転写記録用受像紙を得た。Comparative Example 5 In Comparative Example 4, a dye was changed to 0.002 parts of a direct dye (CI Direct Blue 86) to prepare a paper stock, and then, in the preparation of a coating liquid, 3 parts of a fluorescent whitening agent were used. 95 g of tsubo were obtained in the same manner as in Comparative Example 4 except that the coating liquid was prepared without adding the naphthol-based organic color pigment.
An image-receiving paper for thermal transfer recording of / m 2 was obtained.
【００５９】比較例６
実施例５の基紙の調製において、填料をウニ状軽質炭酸
カルシウムの５部添加に減量し、更に紙力増強剤として
新たにカチオン性ポリアクリルアミドを0.3 部添加して
基紙を調製した以外は、実施例５と同様にして米坪が95
ｇ／ｍ2 の熱転写記録用受像紙を得た。Comparative Example 6 In the preparation of the base paper of Example 5, the filler was reduced to 5 parts of sea urchin light calcium carbonate, and 0.3 part of a cationic polyacrylamide was newly added as a paper strength enhancer. As in Example 5, except that the paper was prepared,
An image receiving paper for thermal transfer recording having a g / m 2 was obtained.
【００６０】このようにして得られた１２種類の熱転写
記録用受像紙について、下記の方法により測定及び品質
評価を行った。そして、得られた結果を表１に示した。The 12 types of thermal transfer recording image-receiving papers thus obtained were measured and evaluated for quality by the following methods. The obtained results are shown in Table 1.
【００６１】（Ｚ軸強度の測定）インターナルボンドテ
スター（Ｅ．Ｈ．Ｂｅｎｚ社製）を使用し、ＴＡＰＰＩ
UM-403に準拠して、Ｚ軸強度（ft・lb）を測定した。(Measurement of Z-axis strength) Using an internal bond tester (manufactured by EH Benz), TAPPI
The Z-axis strength (ft · lb) was measured according to UM-403.
【００６２】（紙の受像層表面の反射特性の測定）エル
レフォ２０００（データーカラー社製）を用いて、螢光
を含む状態で、受像層表面の明度（Ｌ＊）、及び色度
（ａ＊、ｂ＊）を測定した。なお、本発明で呼称する色
相指数Ｓは、次式より求めるものである。
Ｓ＝1.7(ａ＊−1.5)2 ＋0.9(ｂ＊＋５)2＋0.6(ａ＊−1.5 )(ｂ＊＋５） (Measurement of Reflection Characteristic of Paper Image Receiving Layer Surface) Using EL REFO 2000 (manufactured by Data Color Co., Ltd.), lightness (L *) and chromaticity (a *) of the image receiving layer surface in a state of containing fluorescence. , B *) was measured. The hue index S referred to in the present invention is obtained by the following equation. S = 1.7 (a * -1.5) 2 + 0.9 (b * + 5) 2 + 0.6 (a * -1.5) (b * + 5)
【００６３】（画像濃度の測定）熱転写方式のカラープ
リンタ（ＣＨＣ−443 型／神鋼電機社製）を用いてレイ
ンボー、格子、網点、階調記録を有するテストパタ−ン
を記録し、得られた記録画像の黒色ベタ部の濃度をマク
ベス濃度計（ＲＤ−100 Ｒ型／マクベス社製）にて測定
した。(Measurement of Image Density) A thermal transfer color printer (CHC-443 type / manufactured by Shinko Electric Co., Ltd.) was used to record and obtain a test pattern having rainbow, lattice, halftone dots and gradation recording. The density of the black solid portion of the recorded image was measured with a Macbeth densitometer (RD-100 R type / manufactured by Macbeth).
【００６４】（記録面の画像品位の評価）上記記録面の
各記録部について、下記の評価基準で記録画像の品位を
目視にて総合評価した。◎：色ズレや濃淡ムラがなく、
色調が非常に鮮やかで、ナチュラルな色合いを再現して
おり、画像品位が優れている。○：色ズレや濃淡ムラが
殆どなく、色調が鮮やかで、ナチュラルな色合いを概ね
再現しており、画像品位が良好である。△：色ズレや濃
淡ムラが認められ、色調に冴えがなく、画像品位が劣
る。(Evaluation of Image Quality of Recording Surface) With respect to each recording portion of the recording surface, the quality of the recorded image was visually comprehensively evaluated according to the following evaluation criteria. ◎: There is no color shift or uneven density,
The color tone is very vivid and the natural color tone is reproduced, and the image quality is excellent. ◯: Almost no color misregistration or unevenness of light and shade, vivid color tone, and almost natural color tone reproduction, and good image quality. Δ: Color misregistration and uneven density are observed, the color tone is not satisfactory, and the image quality is poor.
【００６５】（記録面のドット再現性の評価）上記記録
面の網点部をドットアナライザー（DA−3000）により30
倍に拡大し、ドットの抜けやシャープ性（滲み）の程度
を下記の評価基準で目視評価した。◎：ドットがシャー
プで抜けがなく極めて優れている。○：ドットの滲みや
抜けが殆どなく良好である。△：ドットの滲みや抜けが
あり僅かに劣っている。×：ドットの滲みや抜けが多く
劣っている。(Evaluation of dot reproducibility on recording surface) The halftone dot portion on the recording surface was measured by a dot analyzer (DA-3000)
The image was magnified twice, and the degree of dot dropout and sharpness (bleeding) was visually evaluated according to the following evaluation criteria. ⊚: The dots are sharp and have no omissions, and are extremely excellent ◯: Good with almost no dot bleeding or omission. Δ: There is bleeding or omission of dots and it is slightly inferior. X: The dots are poor in bleeding and missing.
【００６６】[0066]
【表１】 [Table 1]
【００６７】[0067]
【発明の効果】実施例の結果から明らかなように、本発
明の熱転写記録用受像紙は、記録濃度が高く、ナチュラ
ルな色合いを再現し、カラー色調が鮮やかで、しかも、
ドット再現性に優れた、高品位で高画質な熱転写記録用
受像紙である。As is apparent from the results of the examples, the image-receiving paper for thermal transfer recording of the present invention has a high recording density, reproduces a natural color tone, has a vivid color tone, and
It is a high-quality, high-quality image receiving paper for thermal transfer recording, which has excellent dot reproducibility.
フロントページの続き (72)発明者 安田 普道 兵庫県尼崎市常光寺４丁目３番１号 神 崎製紙株式会社 神崎工場内 (56)参考文献 特開 平１−115687（ＪＰ，Ａ) 特開 平１−206095（ＪＰ，Ａ) 特開 平２−150389（ＪＰ，Ａ) 特開 平３−205188（ＪＰ，Ａ) 特開 平３−240534（ＪＰ，Ａ)Continued front page (72) Inventor Fudou Yasuda God, 4-3-1, Jokoji Temple, Amagasaki City, Hyogo Prefecture Saki Paper Co., Ltd. Kanzaki Mill (56) References Japanese Patent Laid-Open No. 1-115687 (JP, A) Japanese Patent Laid-Open No. 1-206095 (JP, A) JP-A-2-150389 (JP, A) JP-A-3-205188 (JP, A) JP-A-3-240534 (JP, A)
Claims (4)
塗被組成物である水性塗被液を、前記基紙に塗被又は含
浸して形成された受像層とを有する、熱溶融型熱転写記
録方式用熱転写記録用受像紙において、（１）前記基紙が、パルプと、前記パルプの絶乾重量に
対して６〜２０重量％の、ＪＩＳ−Ｋ−６２２０に準拠
する見掛比重が０．１０〜０．５０ｇ／cm 3 の白色多孔
質顔料とを含み、 （２）受像紙のＴＡＰＰＩ ＵＭ−４０３に準拠するＺ
軸強度が０．０５〜０．１８ft・lbであり、且つ （３）受像層表面がＪＩＳ−Ｚ−８７２９に規定された
表示方法に基づき螢光を含んだ状態で測定して下記及
びの条件： Ｌ＊≧９０ 1.7(ａ＊−1.5)2 ＋0.9(ｂ＊＋５)2＋0.6(ａ＊−1.5)（ｂ＊＋５）≦３０ を同時に満足することを特徴とする熱転写記録用受像
紙。1. A heat having a base paper and an image-receiving layer formed by coating or impregnating the base paper with an aqueous coating liquid which is a coating composition containing a pigment and an adhesive as a main component. In a thermal transfer recording image-receiving paper for a fusion type thermal transfer recording system, (1) the base paper is made of pulp and an absolute dry weight of the pulp.
6 to 20% by weight, according to JIS-K-6220
White porous with an apparent specific gravity of 0.10 to 0.50 g / cm 3
And a quality pigment, conforms to TAPPI UM-403 (2) receiving sheet Z
The axial strength is 0.05 to 0.18 ft.lb, and (3) the surface of the image receiving layer is measured under the condition that it contains fluorescence based on the display method specified in JIS-Z-8729. : L * ≧ 90 1.7 (a * -1.5) 2 +0.9 (b * + 5) 2 +0.6 (a * -1.5) (b * + 5) ≦ 30 at the same time for thermal transfer recording Receiving paper.
剤がさらに含まれている、請求項１記載の熱転写記録用
受像紙。2. The image-receiving paper for thermal transfer recording according to claim 1, wherein the base paper further contains a colorant and / or a fluorescent whitening agent.
白剤を含む、請求項１記載の熱転写記録用受像紙。3. The image-receiving paper for thermal transfer recording according to claim 1, wherein the image-receiving layer contains a colorant and / or a fluorescent whitening agent.
リアジニルアミノ）スチルベン−２，２′−ジスルホン
酸誘導体である請求項２又は３記載の熱転写記録用受像
紙。4. The image-receiving paper for thermal transfer recording according to claim 2, wherein the fluorescent brightening agent is a 4,4′-bis (triazinylamino) stilbene-2,2′-disulfonic acid derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04156192A JP3390184B2 (en) | 1992-02-27 | 1992-02-27 | Image receiving paper for thermal transfer recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04156192A JP3390184B2 (en) | 1992-02-27 | 1992-02-27 | Image receiving paper for thermal transfer recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05238172A JPH05238172A (en) | 1993-09-17 |
| JP3390184B2 true JP3390184B2 (en) | 2003-03-24 |
Family
ID=12611853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04156192A Expired - Fee Related JP3390184B2 (en) | 1992-02-27 | 1992-02-27 | Image receiving paper for thermal transfer recording |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3390184B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043997A (en) * | 2004-08-03 | 2006-02-16 | Konica Minolta Photo Imaging Inc | Ic card |
-
1992
- 1992-02-27 JP JP04156192A patent/JP3390184B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05238172A (en) | 1993-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5180624A (en) | Ink jet recording paper | |
| US7361399B2 (en) | Gloss coated multifunctional printing paper | |
| US6177188B1 (en) | Recording medium and ink jet recording process using it | |
| JP2010126854A (en) | Pigment-coated paper for printing | |
| JP2005254758A (en) | Coated paper used combinedly for inkjet recording and electrophotographic recording | |
| US6630229B1 (en) | Electrophotographic recording medium and method | |
| US5302576A (en) | Image-receiving paper for thermal transfer recording system and method of producing it | |
| KR100362690B1 (en) | Paper for use in both ink-jet recording and electrophotographic recording | |
| US20110163528A1 (en) | Recording Material for Laser Printing Process | |
| JP5401109B2 (en) | Colored inkjet postcard paper | |
| JP3390184B2 (en) | Image receiving paper for thermal transfer recording | |
| JPH049237B2 (en) | ||
| JP2008036998A (en) | Inkjet recording paper | |
| JP7131953B2 (en) | coated white paperboard | |
| JP5517161B2 (en) | Inkjet postcard manufacturing method | |
| JP2871290B2 (en) | Image receiving paper for thermal transfer recording | |
| JP3000813B2 (en) | Image receiving paper for thermal transfer recording and manufacturing method thereof | |
| JP3000812B2 (en) | Image receiving paper for thermal transfer recording and manufacturing method thereof | |
| JP3348474B2 (en) | Image-receiving paper for fusion-type thermal transfer recording | |
| JPH01120383A (en) | Ink jet recording paper | |
| JPH08276675A (en) | Image receiving paper for melt type thermal transfer recording | |
| JPH09315016A (en) | Melt type thermal transfer recording acceptive paper | |
| JPH05301476A (en) | Image receiving paper for thermal transfer recording and production thereof | |
| JPH06278380A (en) | Image receiving paper for thermal transfer recording | |
| JP2003320745A (en) | Inkjet recording paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090117 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090117 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100117 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |