JP2010059591A - Method for forming image on fabric by ink for direct sublimation inkjet - Google Patents

Method for forming image on fabric by ink for direct sublimation inkjet Download PDF


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JP2010059591A JP2008229411A JP2008229411A JP2010059591A JP 2010059591 A JP2010059591 A JP 2010059591A JP 2008229411 A JP2008229411 A JP 2008229411A JP 2008229411 A JP2008229411 A JP 2008229411A JP 2010059591 A JP2010059591 A JP 2010059591A
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Katsunori Goi
克典 五井
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Konica Minolta IJ Technologies Inc
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Konica Minolta IJ Technologies Inc
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<P>PROBLEM TO BE SOLVED: To provide a method for reducing production cost in a printing system using ink for direct sublimation inkjet by eliminating troubles when images are formed, preventing decoloration or bleeding during color development and by improving yield. <P>SOLUTION: In the method for forming image on a fabric using ink for direct sublimation inkjet, the image is directly printed on the fabric with an inkjet head using the ink for direct sublimation inkjet and the image is formed after drying through a color development process. The ink is formed of at least sublimation disperse dye, a solvent, a dispersing agent, a surfactant and water. The color development process is completed by passing the fabric through a coloring machine of non-contact heating system. <P>COPYRIGHT: (C)2010,JPO&INPIT


本発明は、インクジェット用インクによる布帛への画像形成方法に関し、特に昇華性分散染料を用いたダイレクト昇華インクジェット用インクによる布帛への画像形成方法に関するものである。   The present invention relates to an image forming method on a fabric using an ink jet ink, and more particularly, to an image forming method on a fabric using a direct sublimation ink jet ink using a sublimable disperse dye.

近年、フラッグやバナー広告などの布帛に画像を印刷する方式として、昇華性染料とこの染料をシールドする分散剤、および溶媒、界面活性剤、および水からなるインクジェット用インクをインクジェットヘッドにより紙、または塩化ビニルシートなどの転写紙と呼ばれる台紙に画像を形成し、該転写紙を布帛に熱転写して該布帛に画像を成形する昇華転写型インクジェット昇華印刷方式が提案されている(例えば、特許文献1参照。)。   In recent years, as a method for printing an image on a fabric such as a flag or a banner advertisement, a sublimation dye and a dispersing agent that shields the dye, and an ink-jet ink composed of a solvent, a surfactant, and water are printed on paper by an ink-jet head, or There has been proposed a sublimation transfer type ink-jet sublimation printing method in which an image is formed on a mount called transfer paper such as a vinyl chloride sheet, and the transfer paper is thermally transferred to a cloth to form an image on the cloth (for example, Patent Document 1). reference.).

しかしこの方法は転写紙を使用することによるコストアップ、さらに転写する画像が布帛側にきれいに転写されにくく、色移りが悪い、裏抜けが多く布帛とは反対側に配置した搬送ローラーを汚すという課題があった。そこで最近では昇華性染料を含むインクジェット用インクを直接布帛にインクジェットヘッドで印刷して画像を形成する方法が提案されている(例えば、特許文献2参照。)。これをダイレクト昇華インクジェット印刷方式という。   However, this method increases the cost due to the use of transfer paper, and further, the image to be transferred is difficult to be transferred cleanly on the fabric side, the color transfer is poor, the back-roller is often stained, and the conveying roller disposed on the opposite side of the fabric is soiled. was there. Therefore, recently, a method has been proposed in which an inkjet ink containing a sublimable dye is directly printed on a fabric with an inkjet head to form an image (see, for example, Patent Document 2). This is called direct sublimation inkjet printing.

しかしこの方法では印刷後の発色を熱ドラムローラーに印刷面を接触させて行うが、印刷した画像が布帛の裏面側に抜けすぎてしまい、本来予定している印刷面の色彩度が低下したり、抜けた染料が布帛と反対面にある搬送ローラーを汚してしまうなどの不具合もあり、プロセス上の歩留まりが悪いことがわかった。さらに直接布帛を熱ドラムローラーに接触させるため、布帛表面の繊維が伸縮して印刷面に皺ができてしまうという品質面の不具合もある。   However, in this method, color development after printing is performed by bringing the printing surface into contact with the thermal drum roller. However, the printed image falls too far to the back side of the fabric, and the originally planned color saturation of the printing surface is reduced. It was also found that the yield in the process was poor because there was a problem that the dye that had come off contaminated the transport roller on the opposite side of the fabric. Furthermore, since the fabric is directly brought into contact with the thermal drum roller, there is a problem in terms of quality that fibers on the fabric surface expand and contract and wrinkles are formed on the printing surface.

このため布帛の皺対策として、インクジェットインクを間欠的に、また搬送速度を連続的に制御して布帛の伸縮を制御する方法なども提案されているが、この方法を実践するには微妙な布帛の制御が必要となり、もともと柔軟な布帛を物理的に制御するのは困難である。発色は物理的にドラムローラー接触である点が特に上記制御を複雑にしていた(例えば、特許文献3参照。)。   For this reason, as a measure against fabric wrinkles, a method for controlling the expansion and contraction of the fabric by intermittently controlling the ink jet ink and continuously controlling the conveyance speed has been proposed. Therefore, it is difficult to physically control a flexible fabric. The above-described control is particularly complicated because the color is physically in contact with the drum roller (see, for example, Patent Document 3).

また発色方式については高圧スチーム、高温スチームなどの方法が開示されている(例えば、特許文献4参照。)がいずれも転写方式での発色方式であり、またスチームを使用することで発色後に布帛に水分が残留してしまい、画像の境界面ににじみが生ずるという不具合があることもわかった。   As for the coloring method, methods such as high-pressure steam and high-temperature steam are disclosed (for example, refer to Patent Document 4). Both are coloring methods in the transfer method, and by using steam, the color is applied to the fabric after coloring. It was also found that there was a problem that moisture remained and bleeding occurred on the boundary surface of the image.

特開平9−300673号公報 特開2000−511954号公報 特開2006−265813号公報 特開2000−110083号公報
Therefore, these known techniques are not sufficient, and a method for reliably forming a fine image by a process of image formation and color development by direct sublimation inkjet ink is not disclosed.
Japanese Patent Laid-Open No. 9-300673 JP 2000-511954 A JP 2006-265813 A JP 2000-110083 A

本発明は上記公知技術では困難であったダイレクト昇華型インクジェットインクを用いた印刷方式での画像形成時の不具合を改善し、しいては発色時の色抜けや滲みを防止し、同時に従来の印刷プロセスでは困難であった歩留まりの悪さを改善して、生産コストを低減させる方法を提供することにある。   The present invention improves the problems at the time of image formation in the printing method using the direct sublimation type ink-jet ink, which has been difficult with the above-mentioned known technology, and prevents color loss and bleeding at the time of coloring, and at the same time, conventional printing An object of the present invention is to provide a method for reducing the production cost by improving the poor yield which has been difficult in the process.

上記課題は、本発明の以下の構成により解決することができた。   The above problem could be solved by the following configuration of the present invention.

1.少なくとも昇華性分散染料、溶媒、分散剤、界面活性剤、および水からなるダイレクト昇華インクジェット用インクを用いて、布帛に画像を直接インクジェットヘッドで印刷し、乾燥してから発色工程を経て画像を形成させる画像形成方法において、発色工程では布帛を非接触式加熱方式の発色機を通して該工程を完了させることを特徴とするダイレクト昇華インクジェット用インクによる布帛への画像形成方法。   1. Using a direct sublimation inkjet ink consisting of at least a sublimable disperse dye, a solvent, a dispersant, a surfactant, and water, an image is printed directly on the fabric with an inkjet head, dried, and then subjected to a coloring process to form an image. In the image forming method to be performed, in the color forming step, the cloth is passed through a non-contact heating type color forming machine, and the step is completed.

2.前記分散剤は、EO−PO共重合体を主体とする親水部と疎水部を有し、EO−PO共重合部分の分子量が1200以上であることを特徴とする前記1に記載のダイレクト昇華インクジェット用インクによる布帛への画像形成方法。   2. 2. The direct sublimation inkjet according to 1, wherein the dispersant has a hydrophilic part and a hydrophobic part mainly composed of an EO-PO copolymer, and the molecular weight of the EO-PO copolymer part is 1200 or more. For forming an image on a fabric using a general ink.

本発明により、発色時の色抜けや滲みを防止し、歩留まりを改善して、生産コストを低減させる方法を提供することができた。   According to the present invention, it has been possible to provide a method for preventing color loss and bleeding during color development, improving yield, and reducing production costs.

本発明を詳細に説明する。   The present invention will be described in detail.

まず、図1を用いて従来のダイレクト昇華印刷方式の概要を説明する。   First, an outline of a conventional direct sublimation printing method will be described with reference to FIG.

この方式では予めポリエステル繊維などの布帛1に前処理剤を塗布した生地原反を巻きだし側ロール10にセットし、インクジェット部2で印刷した後に乾燥部4で溶媒を揮発させる。その後加熱ドラムローラー5を経て発色させ、最後に巻き取り側ロール11に印刷した生地を巻き取るというプロセスである。なお、3a、3b、3c、3dは各々搬送ローラーを示す。   In this method, a raw material fabric in which a pretreatment agent is applied in advance to a fabric 1 such as polyester fiber is set on an unwinding side roll 10, printed by an inkjet unit 2, and then the solvent is volatilized in a drying unit 4. Thereafter, the color is developed through the heated drum roller 5, and finally the fabric printed on the take-up roll 11 is taken up. In addition, 3a, 3b, 3c, 3d shows a conveyance roller, respectively.

この方式は転写紙が不要であるため直接布帛にインクジェットヘッドで画像を印刷し、そのまま画像を印刷した面側から熱ドラムローラーを接触させる。すると昇華性染料が昇華して、布帛の中に拡散して繊維中で定着する。これにより布帛中で発色作用をすることができる。   Since this method does not require transfer paper, an image is printed directly on the fabric with an ink jet head, and a thermal drum roller is brought into contact from the side on which the image is printed as it is. Then, the sublimable dye sublimates and diffuses into the fabric and fixes in the fiber. As a result, a coloring action can be exerted in the fabric.

しかしこの発色工程で染料全体に十分な熱がかからないと、昇華できないものが生じ、それが結果として繊維への発色定着の斑となり、色抜けやにじみを起こすことがあった。また必要以上に熱がかかりすぎると布帛の中を縦横無尽に昇華した染料が移動して、裏面まで達してしまい搬送ローラーを汚したり、本来予定していた画像の色彩度が薄くなってしまうということもわかった。   However, if sufficient heat is not applied to the entire dye in this coloring process, some dyes cannot be sublimated. As a result, colored spots on the fibers become spotted and color loss or blurring may occur. In addition, if too much heat is applied, the dye that has been sublimated in the fabric will move indefinitely in the fabric and will reach the back surface, contaminating the transport roller, or reducing the originally planned color saturation. I also understood that.

そこで本発明はこのダイレクト昇華印刷方式の発色方法、条件について鋭意検討した結果、ダイレクト昇華インクによる印刷画像の発色方法は従来から採用されている熱ドラムロールへの画像部分の直接接触というプロセスでは目的を達成できないことがわかった。   Accordingly, as a result of diligent study on the color development method and conditions of the direct sublimation printing method, the present invention is intended for the color development method of the printed image using the direct sublimation ink in the process of directly contacting the image portion to the thermal drum roll that has been conventionally employed. It was found that could not be achieved.

これには昇華性染料の染着と繊維間の温度勾配には重要な関係があり、印刷された画像が斑なく形成されるには布帛の温度勾配が重要であることがわかった。   It has been found that there is an important relationship between the dyeing of the sublimation dye and the temperature gradient between the fibers, and the temperature gradient of the fabric is important for the printed image to be formed without spots.

この原因は従来技術は熱ドラムローラー方式による発色プロセスであり、印刷表面側に熱ドラムが接触するとその表面が一番温度が高くなり印刷画像の内部に行くほど温度が低下していく直線的な勾配の温度分布を持つと考えられる。この温度勾配をもった状態で染料に熱をかけると表面部分と反対側で昇華効率が異なり、染料が分子となって昇華する効率が低下する。また染料にポリマー分散剤が吸着・包含していることから、ポリマーの熱伝導性がこの昇華プロセスに関係していると考えられる。   The cause of this is the color development process using the thermal drum roller method in the prior art. When the thermal drum comes into contact with the printing surface side, the temperature of the surface is the highest, and the temperature decreases linearly toward the inside of the printed image. It is thought to have a gradient temperature distribution. When heat is applied to the dye with this temperature gradient, the sublimation efficiency differs on the side opposite to the surface portion, and the efficiency of sublimation of the dye as a molecule decreases. Further, since the polymer dispersant is adsorbed and included in the dye, it is considered that the thermal conductivity of the polymer is related to this sublimation process.

そこで、かかる課題に対して、本発明では鋭意検討した結果、ダイレクト昇華型インクジェットインクで布帛を印刷した後に、発色する工程では印刷面とその反対面をほぼ同じ温度で加熱して温度勾配をフラットにすると布帛の表面と内部には温度勾配ができにくくなるのではないかと考えた。   Therefore, as a result of diligent investigations in the present invention, the printing surface and the opposite surface are heated at substantially the same temperature in the color development process after printing the fabric with the direct sublimation inkjet ink, and the temperature gradient is flattened. Then, it was thought that it would be difficult to create a temperature gradient between the surface and the inside of the fabric.

この温度勾配をなくす方法としては布帛の両面から一定温度で迅速に加熱できる非接触型の発色機を用いた発色方法がよいという結論に達した。   As a method for eliminating this temperature gradient, it has been concluded that a coloring method using a non-contact type coloring machine that can be rapidly heated from both sides of the fabric at a constant temperature is good.

図2は、本発明の発色機の内部構成を示す断面図である。尚、本発明の画像形成プロセスにおいては、図1に示すダイレクト昇華印刷方式における加熱ドラムローラー5を本発明の発色機30の構成とする以外は同様の画像形成プロセスを用いることができる。   FIG. 2 is a cross-sectional view showing the internal configuration of the color former of the present invention. In the image forming process of the present invention, a similar image forming process can be used except that the heating drum roller 5 in the direct sublimation printing system shown in FIG.

本発明の発色機30内部は間接的に布帛を間接的に加熱するヒーター33を内蔵するものである。加熱を均一にするためには、布帛の上下に加熱ヒーターを有することが好ましい。又、発色機内部には搬送したり、ぶれを抑えるようなガイドローラー等直接布帛に接触するものはできるだけ存在しないことが好ましい。   The inside of the coloring machine 30 of the present invention incorporates a heater 33 that indirectly heats the fabric. In order to make the heating uniform, it is preferable to have heaters above and below the fabric. Further, it is preferable that there is as little as possible a material that directly contacts the fabric, such as a guide roller that can be conveyed or suppressed in the coloring machine.

発色機30の前後に配置された搬送ローラー31a、31bや前述の巻きだし、巻き取りロールのテンションを利用して、無接触で発色機内を搬送することが最も好ましい。   Most preferably, the inside of the color developing machine is conveyed in a non-contact manner using the tension of the conveying rollers 31a and 31b arranged before and after the color developing machine 30 and the above-described winding and winding rolls.

図3は、本発明における布帛の表面に染料分子と高分子分散剤が吸着され、加熱により繊維内に拡散する状態を示す模式図である。   FIG. 3 is a schematic view showing a state in which dye molecules and a polymer dispersant are adsorbed on the surface of the fabric in the present invention and diffused into the fiber by heating.

図3中、布帛を形成する繊維8の表面には前処理剤6が塗設されている。インクジェットヘッドよりインクが吐出され、印刷される。乾燥工程で溶媒は除去され、昇華性分散染料7及び分散剤8が繊維表面に固着され、発色機内において間接的に加熱されることにより、昇華性分散染料は気化し分子となって繊維内に入り込み定着される。加熱方向が周囲から均一に加熱されることにより、染料に均一に熱が掛かることから気化が均一となり、均一な染着を行うことができる。なお発色温度は幅があるが、好ましくは140℃〜210℃であり、更に好ましくは160℃〜190℃の範囲である。   In FIG. 3, a pretreatment agent 6 is coated on the surface of the fibers 8 forming the fabric. Ink is ejected from the inkjet head and printed. The solvent is removed in the drying step, the sublimable disperse dye 7 and the dispersant 8 are fixed to the fiber surface, and indirectly heated in the color former, whereby the sublimable disperse dye is vaporized and converted into molecules in the fiber. Enter and fix. When the heating direction is uniformly heated from the surroundings, the dye is uniformly heated, so that the vaporization becomes uniform and uniform dyeing can be performed. The color development temperature varies, but it is preferably 140 ° C to 210 ° C, more preferably 160 ° C to 190 ° C.

以下、本発明に用いられる各材料について説明する。   Hereinafter, each material used in the present invention will be described.

Examples of the fabric used in the present invention include various fiber materials such as cotton, silk, wool, nylon, polyester, acetate, rayon, polypropylene, vinylon, and acrylic fiber. It may be. Further, the thickness of the yarn constituting the fabric as described above is preferably in the range of 10 to 100d.

(Sublimation disperse dye)
As an example of the sublimable disperse dye preferably used in the present invention,
(1) C.I. I Disperse Yellow 1, 3, 4, 5, 7, 8, 31, 33, 39, 42, 54, 60, 61, 64, 83, 124;
(2) C.I. I Disperse Red 1, 4, 5, 7, 11, 12, 13, 15, 17, 31, 32, 33, 34, 35, 36, 52, 54, 55, 56, 58, 60, 72, 73, 76, 80, 84, 88, 91, 92, 93, 99, 111, 113, 135, 204, 205, 206, 207, 224, 225, 227, 239, 240;
(3) C.I. I Disperse Blue 20, 26, 54, 55, 56, 58, 60, 61, 62, 64, 72, 79, 81, 85, 87, 90, 91, 92, 94, 97, 98, 99, 10. 3, 104, 105, 106, 108, 128, 148, 149, 176, 186, 187, 193, 194, 195, 197, 201, 205, 207, 211, 212, 213, 214, 215, 216, 217, Examples thereof include disperse dyes such as 218, 219, 220, 221, 222, 223, 224, 225, 226, and 227.

次に本発明に用いられる分散剤としては、ポリマー分散剤が好ましく用いられる。特にEO−PO共重合体を主体とする親水部と高級脂肪酸等からなる疎水部を有し、EO−PO共重合部分の分子量が1200以上である構造を有するものであることが好ましい。   Next, as the dispersant used in the present invention, a polymer dispersant is preferably used. In particular, it preferably has a structure having a hydrophilic part mainly composed of an EO-PO copolymer and a hydrophobic part composed of higher fatty acids and the like, and the molecular weight of the EO-PO copolymer part being 1200 or more.

尚、本発明のEO若しくはPOの分子量は、原子量をC:12、H:1、O:16として、EO:44、PO:58を用いた値であり、EO、POの付加量は平均付加量である。   The molecular weight of EO or PO of the present invention is a value obtained by using EO: 44 and PO: 58 with atomic weights of C: 12, H: 1, and O: 16, and the added amounts of EO and PO are average additions. Amount.

H(OCHCH34−O−C1225 (EO+PO):1496
(ビックケミー社製DisperBYK 183) (EO+PO):1236
(ディスパロンDA−325) (EO+PO):1538
(ビックケミー社製DisperBYK185) (EO+PO):1452
(ビックケミー社製DisperBYK 190) (EO+PO):1610
(ビックケミー社製 DisperBKY 184) (EO+PO):2030
(共栄化学社製 TG−760W) (EO+PO):2240
(共栄化学社製 TG−750W) (EO+PO):2048
Below, the specific example of the dispersing agent used preferably is shown.
H (OCH 2 CH 2) 34 -O-C 12 H 25 (EO + PO): 1496
H (OCH 2 CH 2) 40 -O- (CO) (CH 2) 7 CH = CHCH 2 CH (OH) C 6 H 13
(EO + PO): 1760
H (OCH 2 CH 2) 4 - (OCH (CH 3) CH 2) 20 -O-PO (OH) -O-C 12 H 25
(EO + PO): 1336
H (OCH 2 -CH 2) 7 - (OCH (CH 3) CH 2) 16 -O- (C 6 H 10) (CH 2) 30 CH 3
(DisperBYK 183 manufactured by Big Chemie) (EO + PO): 1236
H (OCH 2 CH 2) 2 - (OCH (CH 3) CH 2) 25 -O-PO (OH) -O- (CH 2) 17 CH 3
(Disparon DA-325) (EO + PO): 1538
H (OCH 2 CH 2) 4 - (OCH (CH 3) CH 2) 22 -O- (C 6 H 4) (CH 2) 30 CH 3
(DisperBYK185 manufactured by Big Chemie) (EO + PO): 1452
H (OCH 2 CH 2) - (OCH (CH 3) CH 2) 27 -O- (CH 2) 30 CH 3
(DisperBYK 190 manufactured by Big Chemie) (EO + PO): 1610
H (OCH (CH 3) CH 2) 35 -O- (C 6 H 4) (CH 2) 14 CH 3
(DisperBKY 184 manufactured by Big Chemie) (EO + PO): 2030
H (OCH 2 CH 2) 14 - (OCH (CH 3) CH 2) 28 -O-PO (OH) -O- (CH 2) 17 CH 3
(TG-760W manufactured by Kyoei Chemical Co., Ltd.) (EO + PO): 2240
H- (O-CH 2 -CH 2 ) 7 - (O-CH (CH 3) CH 2) 30 -O- (C 6 H 4) - (CH 2) 20 -CH 3
(TG-750W manufactured by Kyoei Chemical Co., Ltd.) (EO + PO): 2048
In addition, what is marketed from manufacturers, such as a big chemi company and a Kyoei chemical company, can also use these compounds.

布帛上に印刷された昇華性分散染料にはポリマー分散剤が吸着していると推定される。このポリマーは高級脂肪酸等を主とする疎水部とエチレンオキサイド(EO)、プロピレンオキサイド(PO)の共重合体を直鎖状に配置した親水部からなり、疎水部が染料粒子表面と分子間引力で物理的に吸着して染料の周囲を包含していると考えられる。   It is presumed that the polymer dispersant is adsorbed to the sublimable disperse dye printed on the fabric. This polymer consists of a hydrophobic part mainly composed of higher fatty acids, etc. and a hydrophilic part in which a copolymer of ethylene oxide (EO) and propylene oxide (PO) is linearly arranged. It is thought that it is physically adsorbed and includes the periphery of the dye.

したがって、ポリマー分散剤の熱伝達率がいいと染料に熱が伝わりやすくなり、染料の昇華プロセスが効率よく働くと考えられる。   Therefore, if the heat transfer coefficient of the polymer dispersant is good, heat is easily transferred to the dye, and the dye sublimation process is considered to work efficiently.

本発明ではこのポリマー分散剤の染料を包含した状態での熱伝達効率を検討した結果、親水部がEO−PO共重合体の直鎖構造を持ち、疎水部に高級脂肪酸等を持ち、EO−PO共重合部分の分子量が1200以上のポリマーからなる分散剤が良いことがわかった。EO−PO共重合部分の分子量は、特に上限は無いが、好ましくは1500〜3000で有り、更に好ましくは1500〜2500である。   In the present invention, as a result of examining the heat transfer efficiency in a state in which the dye of this polymer dispersant is included, the hydrophilic part has a linear structure of an EO-PO copolymer, the hydrophobic part has higher fatty acids and the like, and EO- It turned out that the dispersing agent which consists of a polymer whose molecular weight of PO copolymer part is 1200 or more is good. The molecular weight of the EO-PO copolymerized portion is not particularly limited, but is preferably 1500 to 3000, and more preferably 1500 to 2500.

どうしてこの構造をもつポリマーが染料への熱伝達効率が良いかははっきりしないが、染料表面をほぼ均質に包含でき、余分な側鎖が熱の伝達の邪魔をしないためと考えられる。   Although it is not clear why the polymer having this structure has good heat transfer efficiency to the dye, it is considered that the dye surface can be included almost uniformly, and the extra side chain does not interfere with heat transfer.

(Organic solvent)
Examples of the organic solvent that can be used include polyhydric alcohols (for example, ethylene glycol, glycerin, 2-ethyl-2- (hydroxymethyl) -1,3-propanediol, tetraethylene glycol, triethylene glycol, tripropylene glycol, 1,2,4-butanetriol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, 1,6-hexanediol, 1,2-hexanediol, 1,5-pentanediol, 1,2-pentanediol, 2 , 2-dimethyl-1,3-propanediol, 2-methyl-2,4-pentanediol, 3-methyl-1,5-pentanediol, 3-methyl-1,3-butanediol, 2-methyl-1 , 3-propanediol), amines (eg , Ethanolamine, 2- (dimethylamino) ethanol, etc.), monohydric alcohols (eg, methanol, ethanol, butanol, etc.), alkyl ethers of polyhydric alcohols (eg, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl) Ether, triethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, etc.), 2,2'-thiodiethanol, amides (for example, N, N-dimethylformamide etc.), heterocyclic rings (2-pyrrolidone etc.), acetonitrile etc. That.

As the surfactant which can be used, any of cationic, anionic, amphoteric and nonionic can be used.

陽イオン性界面活性剤としては、脂肪族アミン塩、脂肪族4級アンモニウム塩、ベンザルコニウム塩、塩化ベンゼトニウム、ピリジニウム塩、イミダゾリニウム塩等が挙げられる。   Examples of the cationic surfactant include aliphatic amine salts, aliphatic quaternary ammonium salts, benzalkonium salts, benzethonium chloride, pyridinium salts, imidazolinium salts, and the like.

陰イオン性界面活性剤としては、脂肪酸石鹸、N−アシル−N−メチルグリシン塩、N−アシル−N−メチル−β−アラニン塩、N−アシルグルタミン酸塩、アルキルエーテルカルボン酸塩、アシル化ペプチド、アルキルスルホン酸塩、アルキルベンゼンスルホン酸塩、アルキルナフタレンスルホン酸塩、ジアルキルスルホ琥珀酸エステル塩、アルキルスルホ酢酸塩、α−オレフィンスルホン酸塩、N−アシルメチルタウリン、硫酸化油、高級アルコール硫酸エステル塩、第2級高級アルコール硫酸エステル塩、アルキルエーテル硫酸塩、第2級高級アルコールエトキシサルフェート、ポリオキシエチレンアルキルフェニルエーテル硫酸塩、モノグリサルフェート、脂肪酸アルキロールアミド硫酸エステル塩、アルキルエーテルリン酸エステル塩、アルキルリン酸エステル塩等が挙げられる。   Examples of anionic surfactants include fatty acid soap, N-acyl-N-methylglycine salt, N-acyl-N-methyl-β-alanine salt, N-acyl glutamate, alkyl ether carboxylate, acylated peptide , Alkyl sulfonate, alkyl benzene sulfonate, alkyl naphthalene sulfonate, dialkyl sulfosuccinate, alkyl sulfoacetate, α-olefin sulfonate, N-acyl methyl taurine, sulfated oil, higher alcohol sulfate Salts, secondary higher alcohol sulfates, alkyl ether sulfates, secondary higher alcohol ethoxy sulfates, polyoxyethylene alkylphenyl ether sulfates, monoglyculates, fatty acid alkylolamide sulfates, alkyl ether phosphates Salt, alkyl phosphate ester salt and the like.

両性界面活性剤としては、カルボキシベタイン型、スルホベタイン型、アミノカルボン酸塩、イミダゾリニウムベタイン等が挙げられる。   Examples of amphoteric surfactants include carboxybetaine type, sulfobetaine type, aminocarboxylate, imidazolinium betaine and the like.

これらの界面活性剤を使用する場合、単独又は2種類以上を混合して用いることが出来、インク全量に対して、0.001〜1.0質量%の範囲で添加することにより、インクの表面張力を任意に調整することができ好ましい。   When these surfactants are used, they can be used singly or as a mixture of two or more kinds. By adding 0.001 to 1.0% by mass with respect to the total amount of the ink, the surface of the ink can be used. The tension can be arbitrarily adjusted, which is preferable.

(Other additives)
In addition to the above-mentioned compounds, the direct sublimation ink-jet ink composition of the present invention may contain a preservative, an antifungal agent, an antioxidant, a conductivity adjusting agent, a pH adjusting agent, a viscosity adjusting agent, a surface tension, if necessary. Additives such as regulators, oxygen absorbers, and / or nozzle clogging inhibitors can be further used, and the type of such additives used can be determined as appropriate. In particular, the use of a fungicide is preferable.

本発明で使用できる防カビ剤としては、安息香酸ナトリウム、ペンタクロロフェノールナトリウム、2−ピリジンチオール−1−オキサイドナトリウム、ソルビン酸ナトリウム、デヒドロ酢酸ナトリウム、および/または1,2−ジベンジソチアゾリン−3−オン(ICI社のプロキセルCRL、プロキセルBDN、プロキセルGXL、プロキセルXL−2、プロキセルTN)などを挙げることができる。   Antifungal agents that can be used in the present invention include sodium benzoate, sodium pentachlorophenol, sodium 2-pyridinethiol-1-oxide, sodium sorbate, sodium dehydroacetate, and / or 1,2-dibenzisothiazoline- 3-one (Proxel CRL, Proxel BDN, Proxel GXL, Proxel XL-2, Proxel TN of ICI) and the like can be mentioned.

これらの材料の分散方法としては、ボールミル、サンドミル、アトライター、ロールミル、アジテータ、ヘンシェルミキサ、コロイドミル、超音波ホモジナイザー、パールミル、湿式ジェットミル、ペイントシェーカー等各種を用いることができる。   As a method for dispersing these materials, various methods such as a ball mill, a sand mill, an attritor, a roll mill, an agitator, a Henschel mixer, a colloid mill, an ultrasonic homogenizer, a pearl mill, a wet jet mill, and a paint shaker can be used.

本発明の顔料分散体の粗粒分を除去する目的で遠心分離装置を使用すること、フィルターを使用することも好ましく用いられる。   For the purpose of removing the coarse particles of the pigment dispersion of the present invention, it is preferable to use a centrifugal separator or a filter.

以下に実施例を例示しながら更に説明する。   Examples will be further described below with reference to examples.

ダイレクト昇華性分散インクに用いた組成は以下の通りである。   The composition used for the direct sublimable dispersion ink is as follows.

昇華性染料;C.I.Disperse yellow 74 8.5質量%
分散剤(7) 3.5質量%
界面活性剤;サーフィノール465(日信化学社製) 1.2質量%
防腐剤;プロキセルGXL−S(コニカミノルタケミカル社製) 0.3質量%
イオン交換水 62.0質量%
次に上記組成を分散(アシザワファインテック製 Minicer分散機、回転数;2700rpm、メディア;ジルコニアビーズ1.5mmφ、メディア充填率;80%)し、調製したインクを膜脱気モジュール(大日本インキ化学株式会社製、PF−004D)を0.5L/分で通過させた後に、真空包装して捺染用インクジェット防湿包装袋に回収した。
Sublimable dyes; C.I. I. Disperse yellow 74 8.5% by mass
Dispersant (7) 3.5% by mass
Surfactant: Surfynol 465 (manufactured by Nissin Chemical) 1.2% by mass
Preservative: Proxel GXL-S (manufactured by Konica Minolta Chemical Co.) 0.3% by mass
Organic solvent; ethylene glycol / propylene glycol = 4: 1 mixture
24.5% by mass
Ion-exchanged water 62.0% by mass
Next, the above composition was dispersed (Ashizawa Finetech's Minicer disperser, rotation speed: 2700 rpm, media: zirconia beads 1.5 mmφ, media filling rate: 80%), and the prepared ink was used as a membrane degassing module (Dainippon Ink Chemical Co., Ltd.). PF-004D manufactured by Co., Ltd. was passed at 0.5 L / min, and then vacuum-packed and collected in an inkjet moisture-proof packaging bag for printing.

そして、コニカミノルタ社製インクジェットヘッド(#204)を用いて、540dpi×720dpiの解像度で絵柄をポリエステル繊維(大力株式会社製ポンジ、PVA前処理済)に連続印刷した。   Then, using an inkjet head (# 204) manufactured by Konica Minolta Co., Ltd., a pattern was continuously printed on polyester fibers (Donji Co., Ltd., PVA pretreated) by a resolution of 540 dpi × 720 dpi.

尚、dpiは2.54cm当たりのドット数を表す。   In addition, dpi represents the number of dots per 2.54 cm.

印刷したものを温度140℃で乾燥させたのち、以下の2通りの方法で発色させた。   The printed material was dried at a temperature of 140 ° C., and color was developed by the following two methods.

実施例1は図2に示す本発明の発色機を備えたダイレクト昇華印刷プロセス(近接ヒーター型熱処理機)を用い、比較例1は図1に示す従来型の熱ドラムローラー(直径350mm)を用いダイレクト昇華印刷プロセス(輪転型熱処理機(ロール型))を用いた。   Example 1 uses a direct sublimation printing process (proximity heater type heat treatment machine) equipped with the color former of the present invention shown in FIG. 2, and Comparative Example 1 uses a conventional thermal drum roller (diameter 350 mm) shown in FIG. A direct sublimation printing process (rotary heat treatment machine (roll type)) was used.

上記実施例と比較例で下記の評価を行った。結果を下記表2に記載する。   The following evaluation was performed by the said Example and the comparative example. The results are listed in Table 2 below.

color space データで、明度を示すL値で比較した。印刷したポリエステル繊維の印刷していない部分のL値が70.3であり、色相(明度)が高いほど色が濃いことを示す。
The L * a * b * color space data were compared with L * values indicating brightness. The L * value of the unprinted portion of the printed polyester fiber is 70.3, and the higher the hue (lightness), the darker the color.

The level of show-through was evaluated visually in five stages, with 1.0 indicating no show-through and 5.0 indicating maximum show-through.

[Contamination of conveyance roller]
The presence or absence of dirt on the transport roller (see transport roller 3b in FIG. 1) immediately after the color developing machine was visually observed.

本発明の試料は、色相が高く、裏抜けが少なく、搬送ローラー汚染が少なく、発色性に優れることが分かる。   It can be seen that the sample of the present invention has a high hue, little show-through, little contamination on the transport roller, and excellent color developability.

また、分散剤(7)を、表3に記載の、本発明のEO−PO共重合体の他、EO−POの分子量を低下したもの、スチレン−アクリル酸樹脂共重合体、スチレン−マレイン酸共重合体樹脂等を実施した。   In addition to the EO-PO copolymer of the present invention as shown in Table 3, the dispersant (7) is one having a reduced molecular weight of EO-PO, styrene-acrylic acid resin copolymer, styrene-maleic acid. Copolymer resin etc. were implemented.

分散剤により、昇華染料の拡散にばらつきがあり、ポリエステル布帛に印刷した画像の色濃度をOD値で測定して評価した。OD値が1.5以上であることが好ましい。結果を表3に示す。   The dispersion of the sublimation dye varies depending on the dispersant, and the color density of the image printed on the polyester fabric was measured by an OD value and evaluated. The OD value is preferably 1.5 or more. The results are shown in Table 3.

尚、OD値の測定は、サカタインクスエンジニアリング社製 型式;X−Rite361T(V)を用いて測定した。   The OD value was measured using a model manufactured by Sakata Inx Engineering Co., Ltd .; X-Rite 361T (V).

分散剤以外のインク組成は上記実施例1と同じである。またインクジェットヘッド、乾燥、発色方法も実施例1の条件を採用した。   The ink composition other than the dispersant is the same as in Example 1 above. The ink jet head, drying, and coloring method also employed the conditions of Example 1.

d:DisperBYK 192(ビックケミー社製、EO−PO共重合体、EO−PO:846)
Other dispersants a: Joncrill J-501 (manufactured by Joncrill, styrene-maleic acid resin)
b: Jonkrill J-70 (manufactured by Jonkrill, styrene-acrylic acid resin)
c: Jonkrill HPD96 (manufactured by Jonkrill, styrene-acrylic acid resin)
d: DisperBYK 192 (Bic Chemie, EO-PO copolymer, EO-PO: 846)
It can be seen that the polymer dispersant having an EO-PO group of the present invention is excellent in direct sublimation printing.

また、本発明の方法により、発色性が良好で、かつ初期における転写バラツキや発色バラツキが少なく、不良ロスが減少し、生産性に優れることがわかった。   Further, it has been found that the method of the present invention has good color developability, little transfer variation and color variation in the initial stage, reduced defect loss, and excellent productivity.

従来のダイレクト昇華印刷プロセスの概要を示す図である。It is a figure which shows the outline | summary of the conventional direct sublimation printing process. 本発明の発色機の内部構成を示す断面図である。It is sectional drawing which shows the internal structure of the coloring machine of this invention. 布帛の表面に染料分子と高分子分散剤が吸着され、加熱により繊維内に拡散する状態を示す模式図である。It is a schematic diagram showing a state in which dye molecules and a polymer dispersant are adsorbed on the surface of the fabric and diffuse into the fiber by heating.

符号の説明Explanation of symbols

1 布帛
2 インクジェット部
3a、3b、3c、3d 搬送ローラー
4 乾燥部
5 加熱ドラムローラー
6 前処理剤
7 昇華性分散染料
8 繊維
10 巻きだしロール
11 巻き取りロール
30 発色機
31a、31b 搬送ローラー
33 ヒーター
DESCRIPTION OF SYMBOLS 1 Fabric 2 Inkjet part 3a, 3b, 3c, 3d Conveying roller 4 Drying part 5 Heating drum roller 6 Pretreatment agent 7 Sublimation disperse dye 8 Fiber 10 Unwinding roll 11 Winding roll 30 Color developing machine 31a, 31b Conveying roller 33 Heater

Claims (2)

少なくとも昇華性分散染料、溶媒、分散剤、界面活性剤、および水からなるダイレクト昇華インクジェット用インクを用いて、布帛に画像を直接インクジェットヘッドで印刷し、乾燥してから発色工程を経て画像を形成させる画像形成方法において、発色工程では布帛を非接触式加熱方式の発色機を通して該工程を完了させることを特徴とするダイレクト昇華インクジェット用インクによる布帛への画像形成方法。 Using a direct sublimation inkjet ink consisting of at least a sublimable disperse dye, a solvent, a dispersant, a surfactant, and water, an image is printed directly on the fabric with an inkjet head, dried, and then subjected to a coloring process to form an image. In the image forming method to be performed, in the color forming step, the cloth is passed through a non-contact heating type color forming machine, and the step is completed. 前記分散剤は、EO−PO共重合体を主体とする親水部と疎水部を有し、EO−PO共重合部分の分子量が1200以上であることを特徴とする請求項1に記載のダイレクト昇華インクジェット用インクによる布帛への画像形成方法。 The direct sublimation according to claim 1, wherein the dispersant has a hydrophilic part and a hydrophobic part mainly composed of an EO-PO copolymer, and the molecular weight of the EO-PO copolymer part is 1200 or more. A method for forming an image on a fabric using an inkjet ink.
JP2008229411A 2008-09-08 2008-09-08 Method for forming image on fabric by ink for direct sublimation inkjet Pending JP2010059591A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643539A (en) * 2013-12-14 2014-03-19 连云港飞雁毛毯有限责任公司 Production method of warp knitted colorful Compas blanket
JPWO2013125680A1 (en) * 2012-02-22 2015-07-30 パイロットインキ株式会社 Method for producing water-coloring laminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013125680A1 (en) * 2012-02-22 2015-07-30 パイロットインキ株式会社 Method for producing water-coloring laminate
CN103643539A (en) * 2013-12-14 2014-03-19 连云港飞雁毛毯有限责任公司 Production method of warp knitted colorful Compas blanket

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