JP2006281510A - Sublimation transferring type thermal recording method suitable for high speed printing - Google Patents

Sublimation transferring type thermal recording method suitable for high speed printing Download PDF

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JP2006281510A
JP2006281510A JP2005101996A JP2005101996A JP2006281510A JP 2006281510 A JP2006281510 A JP 2006281510A JP 2005101996 A JP2005101996 A JP 2005101996A JP 2005101996 A JP2005101996 A JP 2005101996A JP 2006281510 A JP2006281510 A JP 2006281510A
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printing
dye
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Kenichi Hirota
憲一 廣田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sublimation transferring type thermal recording method which does not generate back trap even when a thermal transferring sheet and an image receiving sheet which are conventionally well-known are used to perform the sublimation transferring type thermal recording at a high speed. <P>SOLUTION: In the sublimation transferring type thermal recording method for forming a full-color image by printing a plurality of colors, the sublimation transferring type thermal recording method is characterized by comprising a printing process with a fast color printing speed and a printing process with a slow color printing speed, and performing the printing in the order of the fast printing process and thereafter, the slow printing process. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、昇華転写型熱記録方法、特に高速印画に適した昇華転写型熱記録方法に関する。   The present invention relates to a sublimation transfer type thermal recording method, and more particularly to a sublimation transfer type thermal recording method suitable for high-speed printing.

フルカラー画像を形成する昇華転写型熱記録方法においては、通常イエロー(Y)、マゼンタ(M)、シアン(C)の3原色を用いて画像を表現しており、それぞれの色を任意の順序で繰り返し印画することによって最終的な印画物を得る。例えば、イエロー印画用の熱転写シート(インクリボン)を受像シートと重ねた状態でイエローを印画した後、マゼンタ印画用の熱転写シートを先のイエローを印画した受像シートと重ねた状態でマゼンタを印画し、さらにシアン印画用の熱転写シートを先のイエローとマゼンタを印画した受像シートと重ねた状態でシアンを印画することによってフルカラーの印画物を得ることができる。   In a sublimation transfer type thermal recording method for forming a full-color image, an image is usually expressed using three primary colors of yellow (Y), magenta (M), and cyan (C), and each color is expressed in an arbitrary order. By repeatedly printing, a final print product is obtained. For example, after printing yellow with the thermal transfer sheet (ink ribbon) for yellow printing superimposed on the image receiving sheet, print the magenta with the thermal transfer sheet for magenta printing superimposed on the image receiving sheet printed with the previous yellow. Further, by printing cyan in a state where the thermal transfer sheet for cyan printing is overlapped with the image receiving sheet printed with yellow and magenta, a full-color print can be obtained.

熱転写シートは、基本的にポリエステル等の基材シートの上に染料層が形成された構成をしている。染料層は、バインダーと呼ばれるポリマーと染料(色材)とからなる。これらのポリマーと色材を適当な溶剤に溶解させてインキ化し、該インキを基材上に塗工、乾燥することで染料層が形成される。印画は、染料層を塗工面と反対側から画像パターンに対応させて加熱する事で染料層中の染料のみを受像シート側に昇華転写し画像を形成することにより行われる。   The thermal transfer sheet basically has a structure in which a dye layer is formed on a base material sheet such as polyester. The dye layer is composed of a polymer called a binder and a dye (coloring material). These polymers and coloring materials are dissolved in an appropriate solvent to form an ink, and the ink is applied on a substrate and dried to form a dye layer. Printing is performed by forming an image by sublimation transfer of only the dye in the dye layer to the image receiving sheet side by heating the dye layer corresponding to the image pattern from the side opposite to the coating surface.

最近、昇華転写型熱記録方法においても、印画速度の高速化が要望されている。昇華転写型熱記録方法の高速化には種々の方法が提案されているが、印画時の温度を上げて染料の拡散速度を上昇させ、各色の印画時間を短縮することは一つの方法である。しかしながら、各色の印画速度をそのように単に同様に高速化するのみでは、バックトラップという問題の影響がより大きくなる。バックトラップとは、2色目、3色目印画時にその前に受容層にすでに印画されている染料が転写シート側に移行してくる現象である。高精細画像を得る場合、印画時の熱はサーマルヘッドと呼ばれる熱源で数十ナノ秒オーダーのパルス信号として加熱を繰り返すことで与えることが通常であり、熱源から与えられる熱量は非常に小さい。このような方法では熱源温度の上昇に比べて被加熱体の温度は熱源から離れるほど小さくなる傾向があり(熱源温度と被加熱体温度とが温度平衡状態を達成するほどの熱量は与えていない)、ある一定の温度勾配が発生する。この温度勾配も加熱時間の減少と共に大きくなり、すなわち印画速度が速くなるほど、受容層に対するインクリボンの温度が相対的に高くなる。染料の拡散を促す推進力は、
(a)染料の濃度勾配
(b)バインダーの染料受容能力
であり、受容層に対するインクリボンの温度が相対的に高くなることは(b)の効果によって受容層に転写されている染料がよりインクリボン側に戻ってくることを示している。その結果、予定した量の染料が受像シートに転写されず、原画を忠実に再現できないことになるものと考えられている。
Recently, also in the sublimation transfer type thermal recording method, it is desired to increase the printing speed. Various methods have been proposed to increase the speed of the sublimation transfer type thermal recording method, but it is one method to shorten the printing time of each color by increasing the temperature of printing and increasing the diffusion rate of the dye. . However, simply increasing the printing speed of each color in the same way increases the influence of the problem of back trapping. The back trap is a phenomenon in which the dye that has already been printed on the receiving layer before the second color and third color printing moves to the transfer sheet side. When a high-definition image is obtained, heat at the time of printing is usually given by repeating heating as a pulse signal of the order of several tens of nanoseconds with a heat source called a thermal head, and the amount of heat given from the heat source is very small. In such a method, the temperature of the object to be heated tends to decrease as the temperature of the heated object increases from the temperature of the heat source (the amount of heat is not given to achieve a temperature equilibrium between the heat source temperature and the temperature of the object to be heated). ), A certain temperature gradient is generated. This temperature gradient also increases with decreasing heating time, that is, the higher the printing speed, the higher the temperature of the ink ribbon relative to the receiving layer. The driving force that promotes the diffusion of dyes is
(A) Concentration gradient of dye (b) Dye receptive ability of binder, and the temperature of the ink ribbon relative to the receptive layer becomes relatively high because the dye transferred to the receptive layer is more ink due to the effect of (b) It shows that it returns to the ribbon side. As a result, it is considered that a predetermined amount of dye is not transferred to the image receiving sheet, and the original image cannot be faithfully reproduced.

本発明は上記事情に鑑みなされたものであり、従来公知の熱転写シートおよび受像シートを使用して高速で昇華転写型熱記録を行っても、バックトラップの影響を低減できる昇華転写型熱録方法を提供することを目的とする。   The present invention has been made in view of the above circumstances, and a sublimation transfer type thermal recording method capable of reducing the influence of a back trap even if sublimation transfer type thermal recording is performed at high speed using a conventionally known thermal transfer sheet and image receiving sheet. The purpose is to provide.

本発明は、複数の色を印画してフルカラー画像を形成する昇華転写型熱記録方法において、色の印画速度が速い印画工程と、色の印画速度が遅い印画工程を含むことを特徴とする、昇華転写型熱記録方法に関する。   The present invention is a sublimation transfer type thermal recording method for printing a plurality of colors to form a full color image, and includes a printing process with a high color printing speed and a printing process with a low color printing speed. The present invention relates to a sublimation transfer type thermal recording method.

本発明の方法を使用すると、従来公知の熱転写シートおよび受像シートを使用して、高速でしかもバックトラップの影響を低減できる昇華転写型熱録を行うことができる。これによってより高速で印画する必要性が出た場合でも、より高濃度を再現できる。   By using the method of the present invention, it is possible to perform sublimation transfer type thermal recording that can reduce the influence of the back trap at a high speed by using a conventionally known thermal transfer sheet and image receiving sheet. As a result, even when it becomes necessary to print at a higher speed, a higher density can be reproduced.

本発明において印画速度とは熱転写シートと受像シートとを重ね合わせ、サーマルヘッドにより熱転写シートに熱を印加している間の時間を意味している。従来はそのような印画速度が0.24〜1.20s/cm程度でおこなわれていた。   In the present invention, the printing speed means the time during which the thermal transfer sheet and the image receiving sheet are overlapped and heat is applied to the thermal transfer sheet by the thermal head. Conventionally, such a printing speed has been performed at about 0.24 to 1.20 s / cm.

本発明において、「色の印画速度が速い印画工程」とは、印画速度が1.20s/cmより速い速度、特に0.06〜0.17s/cmで行われる各色の印画工程を意味している。この印画速度をすべての色の熱転写シートに採用すると、実質印画にかかっている時間のみを考えた場合はA4サイズの用紙に毎分2〜9枚程度のフルカラー印画することが可能となる。   In the present invention, “a printing process with a fast color printing speed” means a printing process for each color performed at a printing speed higher than 1.20 s / cm, particularly 0.06 to 0.17 s / cm. Yes. When this printing speed is adopted for the thermal transfer sheets of all colors, it is possible to print about 2 to 9 full-color images per minute on A4 size paper, considering only the time required for actual printing.

「色の印画速度が遅い印画工程」とは、「色の印画速度が速い印画工程」の印画速度より60〜80%程度印画速度が遅い印画工程の範囲で行われる各色の印画工程を意味している。   “Color printing process with a slow color printing speed” means a printing process for each color that is performed in the range of a printing process whose printing speed is 60 to 80% slower than the printing speed of the “printing process with a fast color printing speed”. ing.

本発明おいて、「高速」とは、実質印画にかかっている時間のみを考えた場合にA4サイズの用紙に毎分2枚以上フルカラー印画することが可能な場合をいい、印画速度が速い印画工程と印画速度が遅い印画工程は、このような高速印画が達成される限り、それらの工程は任意に組み合わせ可能であり、また印字速度も任意に調整可能である。   In the present invention, “high speed” refers to a case where two or more full-color images can be printed on an A4 size sheet per minute considering only the time required for actual printing. As long as such a high-speed printing is achieved, the printing process having a low printing speed and the printing process can be arbitrarily combined, and the printing speed can be arbitrarily adjusted.

昇華転写型熱記録方法においては、フルカラー画像は、受像シート上に、熱転写シートから熱昇華したイエロー、マゼンタ、シアンの3色の染料を重ね合わせて形成される。このような3種類の受像シートを使用する場合、色の印画速度が遅い印画工程にどの色の熱転写シートを割り当て、また色の印画速度が速い印画工程にどの色の熱転写シートを割り当てるかは、以下の(i)または/および(ii)を基準に、好ましくは以下の(i)および(ii)の両者を満たす基準で判断すればよい。
(i)DB比(染料層中の染料とバインダーの比率(染料/バインダー))が最も低い染料層を有する熱転写シート。特に、単位面積あたりの染料含有量が1.20mmol・m/g以下の熱転写シート。
(ii)「モル吸光係数×半値幅」の値が一番大きな染料で構成される染料層を有する熱転写シート。特に、その値が0.4(M−1)以上を有する熱転写シート。
In the sublimation transfer type thermal recording method, a full-color image is formed by superimposing three color dyes of yellow, magenta, and cyan, which are sublimated from a thermal transfer sheet, on an image receiving sheet. When these three types of image receiving sheets are used, which color thermal transfer sheet is assigned to a printing process with a slow color printing speed, and which color thermal transfer sheet is assigned to a printing process with a fast color printing speed, The following (i) or / and (ii) may be used as a reference, and preferably, the following criteria (i) and (ii) may be used.
(I) A thermal transfer sheet having a dye layer having the lowest DB ratio (ratio of dye to binder in the dye layer (dye / binder)). In particular, a thermal transfer sheet having a dye content per unit area of 1.20 mmol · m 2 / g or less.
(Ii) A thermal transfer sheet having a dye layer composed of a dye having the largest value of “molar extinction coefficient × half-value width”. In particular, a thermal transfer sheet having a value of 0.4 (M −1 ) or more.

染料の拡散速度は染料各々の物理的性質にも依存するが、染料層中に含有している染料のモル数にも依存する。すなわち染料層中に含まれる染料のモル数が多いほど染料層と受容層の間の濃度勾配が大きくなり、これが拡散速度を大きくする因子となる。DB比の大小は要求性能に応じて適宜決定できるものである。一般的傾向として、DB比を大きくすると、(1)インクリボン状態での背面層への染料移行、(2)長期(高温)保存時の染料層表面への染料析出などのインクリボン保存性が悪くなるが、逆に転写感度は良くなる。そのため、「色の印画速度が遅い印画工程」に適用される熱転写シートは、保存性に問題があってやむなくDB比をあげる事が出来ない染料層を有する熱転写シートとすることが望ましいのである。すなわち、染料層1g中に含まれている染料のモル数を各色の染料層1g中に含まれている染料のモル数の平均で割った値の逆数分だけ、印画速度を基準速度よりも遅くする事で良い効果が得られる。「基準速度」とはその印画工程内で元も速い印画速度を採用している色の印画速度の事であり、染料のDB比から求めた遅い印画速度を採用する工程の印画速度が基準速度の半分までであれば本発明の目的が達成できる。   The diffusion rate of the dye depends on the physical properties of each dye, but also depends on the number of moles of the dye contained in the dye layer. That is, as the number of moles of the dye contained in the dye layer increases, the concentration gradient between the dye layer and the receiving layer increases, which becomes a factor for increasing the diffusion rate. The size of the DB ratio can be appropriately determined according to the required performance. As a general tendency, if the DB ratio is increased, (1) dye transfer to the back layer in the ink ribbon state, (2) ink ribbon storage stability such as dye deposition on the surface of the dye layer during long-term (high temperature) storage On the contrary, the transfer sensitivity is improved. Therefore, it is desirable that the thermal transfer sheet applied to the “printing process with a slow color printing speed” be a thermal transfer sheet having a dye layer that has a problem in storage stability and cannot increase the DB ratio. That is, the printing speed is slower than the reference speed by the reciprocal of the value obtained by dividing the number of moles of dye contained in 1 g of the dye layer by the average number of moles of dye contained in 1 g of the dye layer of each color. A good effect is obtained by doing. "Reference speed" is the color printing speed that originally adopted the fast printing speed in the printing process. The printing speed of the process that uses the slow printing speed determined from the DB ratio of the dye is the reference speed. The object of the present invention can be achieved if it is up to half of the above.

上記(ii)の「モル吸光係数×半値幅」の値を基準にするのは、染料1分子当たりの濃度への影響度の大きさに依存するパラメータである理由による。   The reason why the value of “molar extinction coefficient × half-value width” in (ii) above is used as a reference is because the parameter depends on the degree of influence on the concentration per dye molecule.

例えば、以下の実施例で作成した転写シート:
イエロー染料層
染料含有量:1.54mmol・m/g
(モル吸光係数×半値幅)値:0.273
マゼンタ染料層
染料含有量:1.16mmol・m/g
(モル吸光係数×半値幅)値:0.546
シアン染料層
染料含有量:1.80mmol・m/g
(モル吸光係数×半値幅)値(平均):0.250(染料1は0.287、染料2は0.223)
を用いて、本発明の方法を実施する場合においては、マゼンタ色の印画の後にシアン色の印画を行い、マゼンタ色の印画工程を、本発明にいう色の印画速度が遅い印画工程とし、シアン色の印画工程を、本発明にいう色の印画速度が早い印画工程とする。マゼンタ色とシアン色が左記印画順序、および印画速度の関係をもって昇華転写型熱記録が行われる限り、イエロー色の印字は、マゼンタ、シアンの印字に先立っておこなわれてもよく、また、マゼンタ、シアンの印字の後に行ってもよい。また、イエロー色の印字は、色の印画速度が速い印画工程を採用してもよいし、色の印画速度が遅い印画工程を採用してもよく、フルカラー画像を形成するに要するトータルの時間、その他、要求画質等により適宜選定可能である。
For example, the transfer sheet prepared in the following examples:
Yellow dye layer Dye content: 1.54 mmol · m 2 / g
(Molar extinction coefficient × half-value width) Value: 0.273
Magenta dye layer Dye content: 1.16 mmol · m 2 / g
(Molar extinction coefficient x half-value width) Value: 0.546
Cyan dye layer Dye content: 1.80 mmol · m 2 / g
(Molar extinction coefficient × half width) Value (average): 0.250 (0.287 for dye 1 and 0.223 for dye 2)
When the method of the present invention is used, cyan printing is performed after magenta printing, the magenta printing process is set as a printing process with a slow color printing speed referred to in the present invention, and cyan printing is performed. The color printing process is a printing process having a fast color printing speed according to the present invention. As long as the sublimation transfer type thermal recording is performed with the relationship between the printing order and the printing speed on the left for magenta and cyan, yellow printing may be performed prior to magenta and cyan printing. It may be performed after cyan printing. The yellow printing may employ a printing process with a fast color printing speed or a printing process with a slow color printing speed. The total time required to form a full-color image, In addition, it can be appropriately selected depending on the required image quality.

昇華転写型熱記録方法においては、イエロー、マゼンタ、シアンの3色以外に蛍光発光、赤外線発光の染料で構成した熱転写シートを組み合わせることがある。このような昇華転写型熱記録方法においても、マゼンタ色の印画の後にシアン色の印画を行い、マゼンタ色の印画工程を、本発明にいう色の印画速度が遅い印画工程とし、シアン色の印画工程を、本発明にいう色の印画速度が早い印画工程とする限り、そのような転写シートも使用可能である。   In the sublimation transfer type thermal recording method, a thermal transfer sheet composed of fluorescent light emission and infrared light emission dyes in addition to the three colors of yellow, magenta and cyan may be combined. Even in such a sublimation transfer type thermal recording method, cyan printing is performed after magenta printing, and the magenta printing process is set as a printing process with a slow color printing speed according to the present invention. Such a transfer sheet can also be used as long as the process is a printing process having a fast color printing speed according to the present invention.

また、昇華型熱転写記録方法に使用可能な受像シートについても、従来の受像シートが使用可能である。   In addition, a conventional image receiving sheet can be used as an image receiving sheet that can be used in the sublimation thermal transfer recording method.

本発明の方法を使用すると、従来公知の熱転写シートおよび受像シートを使用して、高速でしかもバックトラップを生じることなく昇華転写型熱記録を行うことができる。   By using the method of the present invention, it is possible to perform sublimation transfer type thermal recording at high speed without causing a back trap by using a conventionally known thermal transfer sheet and image receiving sheet.

転写シート
厚み5μmのポリエステル基材シートの上に、以下の染料インキを塗工、乾燥することで染料層(乾燥時重量1.0g/m)を形成したものを、転写シートとして使用した。
Transfer sheet The following dye ink was coated on a polyester substrate sheet having a thickness of 5 μm and dried to form a dye layer (weight when dried: 1.0 g / m 2 ).

得られた染料層は下記特性を有している。
イエロー染料層
染料含有量:1.54mmol・m/g
(モル吸光係数×半値幅)値:0.273
マゼンタ染料層
染料含有量:1.16mmol・m/g
(モル吸光係数×半値幅)値:0.546
シアン染料層
染料含有量:1.80mmol・m/g
(モル吸光係数×半値幅)値(平均):0.250(染料1は0.287、染料2は0.223)
The obtained dye layer has the following characteristics.
Yellow dye layer Dye content: 1.54 mmol · m 2 / g
(Molar extinction coefficient × half-value width) Value: 0.273
Magenta dye layer Dye content: 1.16 mmol · m 2 / g
(Molar extinction coefficient x half-value width) Value: 0.546
Cyan dye layer Dye content: 1.80 mmol · m 2 / g
(Molar extinction coefficient × half width) Value (average): 0.250 (0.287 for dye 1 and 0.223 for dye 2)

イエロー染料インキ
イエロー染料:3.5重量部(1.54mmol・m/g)
ポリビニルブチラール樹脂(エスレックBX−1、積水化学社製):1.5重量部
トルエン:45重量部
MEK(メチルエチルケトン):45重量部
Yellow dye ink Yellow dye: 3.5 parts by weight (1.54 mmol · m 2 / g)
Polyvinyl butyral resin (ESREC BX-1, manufactured by Sekisui Chemical Co., Ltd.): 1.5 parts by weight Toluene: 45 parts by weight MEK (methyl ethyl ketone): 45 parts by weight

マゼンタ染料インキ
マゼンタ染料:2.5重量部(1.16mmol・m/g)
ポリビニルアセタール樹脂(エスレックKS−5、積水化学社製):2.5重量部
トルエン:45重量部
MEK:45重量部
Magenta dye ink Magenta dye: 2.5 parts by weight (1.16 mmol · m 2 / g)
Polyvinyl acetal resin (ESREC KS-5, manufactured by Sekisui Chemical Co., Ltd.): 2.5 parts by weight Toluene: 45 parts by weight MEK: 45 parts by weight

シアン染料インキ
シアン染料1:1.63重量部(0.86mmol・m/g)
シアン染料2:1.63重量部(0.94mmol・m/g)
ポリビニルアセタール樹脂(エスレックKS−5、積水化学社製):1.63重量部
トルエン:45重量部
MEK:45重量部
Cyan dye ink Cyan dye 1: 1.63 parts by weight (0.86 mmol · m 2 / g)
Cyan dye 2: 1.63 parts by weight (0.94 mmol · m 2 / g)
Polyvinyl acetal resin (ESREC KS-5, manufactured by Sekisui Chemical Co., Ltd.): 1.63 parts by weight Toluene: 45 parts by weight MEK: 45 parts by weight

なお、各染料は、以下の化学構造式を有している。
(イエロー染料の構造式)

Figure 2006281510
分子量:486.6、モル吸光係数:54600、半値幅:50nm Each dye has the following chemical structural formula.
(Structural formula of yellow dye)
Figure 2006281510
Molecular weight: 486.6, molar extinction coefficient: 54600, full width at half maximum: 50 nm

(マゼンタ染料の構造式)

Figure 2006281510
分子量:429.6、モル吸光係数:78000、半値幅:70nm (Structural formula of magenta dye)
Figure 2006281510
Molecular weight: 429.6, molar extinction coefficient: 78000, full width at half maximum: 70 nm

(シアン染料1の構造式)

Figure 2006281510
分子量:375.3、モル吸光係数:26000、半値幅:110nm (Structural formula of cyan dye 1)
Figure 2006281510
Molecular weight: 375.3, molar extinction coefficient: 26000, half width: 110 nm

(シアン染料2の構造式)

Figure 2006281510
分子量:343.0、モル吸光係数:15900、半値幅:140nm (Structural formula of cyan dye 2)
Figure 2006281510
Molecular weight: 343.0, molar extinction coefficient: 15900, full width at half maximum: 140 nm

受像シート
パールコート(三菱製紙製、157g/m)に35MW247(モービル社製、38μ)を粘着剤にて貼り合せた基材シートの35MW247面に、以下のプライマー層、受容層を設けた。
Image receiving sheet The following primer layer and receiving layer were provided on the 35 MW 247 surface of a base sheet in which 35 MW 247 (manufactured by Mobil Corp., 38 μ) was bonded to a pearl coat (manufactured by Mitsubishi Paper Industries, 157 g / m 2 ) with an adhesive.

(プライマー層インキ)
WR−905(水系ポリエステル(n.v.20%)、日本合成化学社製):5重量部
TCA888(酸化チタン): 2重量部
水: 8重量部
(Primer layer ink)
WR-905 (water-based polyester (n.v. 20%), manufactured by Nippon Synthetic Chemical): 5 parts by weight TCA888 (titanium oxide): 2 parts by weight Water: 8 parts by weight

上記インキを乾燥時の重量が1g/mになるように塗布し、110℃で1分間乾燥させた。 The ink was applied so that the dry weight was 1 g / m 2 and dried at 110 ° C. for 1 minute.

(受容層インキ)
ソルバインC(塩ビ酢ビ共重合樹脂、日清化学(株)製): 9重量部
X−22−3000T(変性シリコーンオイル、信越化学工業(株)製):0.5重量部
X−24−510(変性シリコーンオイル、信越化学工業(株)製): 0.5重量部
トルエン:20重量部
MEK:20重量部
(Receptive layer ink)
Solvain C (polyvinyl chloride copolymer resin, manufactured by Nissin Chemical Co., Ltd.): 9 parts by weight X-22-3000T (modified silicone oil, manufactured by Shin-Etsu Chemical Co., Ltd.): 0.5 parts by weight X-24- 510 (modified silicone oil, manufactured by Shin-Etsu Chemical Co., Ltd.): 0.5 parts by weight Toluene: 20 parts by weight MEK: 20 parts by weight

上記インキを乾燥時の重量が4g/mになるように塗布し、110℃で1分間乾燥させた。 The ink was applied so that the dry weight was 4 g / m 2 and dried at 110 ° C. for 1 minute.

プリンタは以下の様なパラメータを持つものを使用した。
プリンタのパラメータ
サーマルヘッド:東芝ホクト電子製F3959(301dpiヘッド、抵抗値5212Ω)
印圧:50N
印画開始ヘッド温度:28.0℃
印画パターン:ステップ(18階調の黒)
A printer with the following parameters was used.
Printer parameter thermal head: F3959 manufactured by Toshiba Hokuto Electronics (301 dpi head, resistance 5212Ω)
Printing pressure: 50N
Printing start head temperature: 28.0 ° C
Print pattern: Step (18 gradation black)

イエロー、マゼンタ、シアンの各色のすべてを0.24s/cm,70%,24V、または0.17s/cm),90%,29Vで印字を行った場合、およびイエロー、シアンの各色を0.17s/cm),90%,29V、マゼンタ色のみ0.24s/cm,70%,24Vで印字を行った場合に、形成された画像(黒18階調)の各階調の反射濃度(OD値)を、GRETAG SPECTROLINO(D65 Ansi-A)により測定した。結果を表1に示した。
測定した値は、技術的には、
OD値=−log10(測定光/入射光)
で表現され、数値が高いほど濃い色である事を意味する。
When yellow, magenta, and cyan are printed at 0.24 s / cm, 70%, 24 V, or 0.17 s / cm), 90%, and 29 V, and yellow and cyan are each 0.17 s. / Cm), 90%, 29V, magenta only 0.24 s / cm, 70%, 24V, the printed image (black 18 gradations), the reflection density (OD value) of each gradation Was measured by GRETAG SPECTROLINO (D65 Ansi-A). The results are shown in Table 1.
The measured values are technically
OD value = -log 10 (measurement light / incident light)
The higher the numerical value, the darker the color.

なお、「0.17s/cm,90%,29V」等の表現は、印画が1cmあたり0.17秒で進行し、その90%に相当する時間だけサーマルヘッドに29Vの電圧をかけて印画を行う事を意味する。   In addition, expressions such as “0.17 s / cm, 90%, 29 V” indicate that printing proceeds at 0.17 seconds per cm, and a voltage of 29 V is applied to the thermal head for a time corresponding to 90% of the printing. Means to do.

Figure 2006281510
Figure 2006281510

イエロー、マゼンタ、シアンの各色のすべてを0.12s/cm、90%、32V、または0.17s/cm,90%,29Vで印字を行った場合、およびイエロー、シアンの各色を0.12ms/cm,90%,32V、マゼンタ色のみ0.17s/cm,90%,29Vで印字を行った場合に、形成された画像(黒18階調)の各階調の反射濃度(OD値)を、上記と同様に測定し、結果を表2に示した。   When yellow, magenta, and cyan are all printed at 0.12 s / cm, 90%, 32 V, or 0.17 s / cm, 90%, and 29 V, and yellow and cyan are each 0.12 ms / cm When printing is performed at cm, 90%, 32V, magenta only 0.17 s / cm, 90%, 29V, the reflection density (OD value) of each gradation of the formed image (black 18 gradations) is The measurement was performed in the same manner as described above, and the results are shown in Table 2.

Figure 2006281510
Figure 2006281510

Claims (2)

複数の色を印画してフルカラー画像を形成する昇華転写型熱記録方法において、色の印画速度が速い印画工程と、色の印画速度が遅い印画工程を含むことを特徴とする、昇華転写型熱記録方法。   In a sublimation transfer type thermal recording method for printing a plurality of colors to form a full color image, the method includes a sublimation transfer type heat recording method comprising a printing step with a high color printing speed and a printing step with a low color printing speed. Recording method. イエロー、マゼンタ、シアンを印画してフルカラー画像を形成する昇華転写型熱記録方法において、マゼンタの印画速度をシアンの印画速度より遅くして印画が行われることを特徴とする、昇華転写型熱記録方法。

In a sublimation transfer type thermal recording method in which yellow, magenta and cyan are printed to form a full color image, the sublimation transfer type thermal recording is performed with a magenta printing speed slower than the cyan printing speed. Method.

JP2005101996A 2005-03-31 2005-03-31 Sublimation transferring type thermal recording method suitable for high speed printing Pending JP2006281510A (en)

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JP2011073378A (en) * 2009-09-30 2011-04-14 Dainippon Printing Co Ltd Thermal transfer sheet and image forming method
JP2015016642A (en) * 2013-07-11 2015-01-29 大日本印刷株式会社 Coating liquid for cyan dye layer and thermal transfer sheet
JP2016120685A (en) * 2014-12-25 2016-07-07 キヤノン株式会社 Printer, control method and program of the same
JP2020044654A (en) * 2018-09-14 2020-03-26 凸版印刷株式会社 Thermal transfer image receiving sheet

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011073378A (en) * 2009-09-30 2011-04-14 Dainippon Printing Co Ltd Thermal transfer sheet and image forming method
JP2015016642A (en) * 2013-07-11 2015-01-29 大日本印刷株式会社 Coating liquid for cyan dye layer and thermal transfer sheet
JP2016120685A (en) * 2014-12-25 2016-07-07 キヤノン株式会社 Printer, control method and program of the same
JP2020044654A (en) * 2018-09-14 2020-03-26 凸版印刷株式会社 Thermal transfer image receiving sheet
JP7192335B2 (en) 2018-09-14 2022-12-20 凸版印刷株式会社 thermal transfer image receiving sheet

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