JP2607448B2 - Inkjet printing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printing method in which the range of expressible hue is expanded.

[0002]

2. Description of the Related Art Conventionally, an ink jet method has been proposed for printing a woven or non-woven fabric made of synthetic fibers or a woven fabric of a blend of these fibers and other fibers. Dyes mainly composed of water-soluble dyes such as red, blue, yellow and black acid dyes or direct dyes are used as dye ink colorants by the ink jet method. The inks used in these conventional inkjet printings are:
Since it is developed when the material to be printed is paper, a coating agent such as a fluorescent agent, talc and silica is applied, and the number of dyeing inks is four. Hue could be expressed. However, when applied on a fabric, there is a problem that the density becomes insufficient, the hue range is narrow, and the hue required as a normal textile fiber product cannot be expressed.

[0003] The hue range that can be expressed by the conventional three primary colors and four color inks of black is as follows. Red: (a) 50 to 70 (b) -20 to 20 Blue: (a) -40 to 20 (b) -20 to -50 Yellow: (a) -20 to 20 (b) 50 to 90 Black: ( a) -5 to 5 (b) -5 to 5 The above hue range is represented on a coordinate plane as shown in FIG. 2. The range surrounded by a dotted line in the figure is the maximum that can be expressed by the conventional three primary colors and the black color. Hue range.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a conventional 4
The purpose is to express the necessary hue as a printed product that cannot be expressed by ink jet printing using color ink.

[0005]

According to the present invention, in addition to three primary colors and black dyes, one or more dyes from orange, violet and green are added in accordance with the hue, so that a total of five dyes are obtained.
An ink jet printing method characterized by using a dye of a color or more. (Orange: (a) 20-70 (b) 50-
90 violet: (a) 20-70 (b) -20
-50 Green: (a) -20 to -70 (b) 50 to 9
0 (a, b are perceived chromaticity indices defined in CIE1976 (L, a, b) space.))

In the present invention, a total of five or more dyes are used, but preferably six to seven colors are used. The three primary colors are red, blue, and yellow. In the present invention,
One of the following three dyes is used for the three primary colors and the black dye.
It is possible to expand the hue range that can be expressed by adding more than one kind of dye according to the hue.

The hue ranges of the additional dyes are likewise indicated. The hue range shown here is a measured value when applied on a fabric. Orange: (a) 20-70 (b) 50-9
0 Violet: (a) 20-70 (b) -20
-50 Green: (a) -20 to -70 (b) 50 to 9
0 Among the above hue ranges, particularly preferred ranges are shown below. Orange: (a) 40-60 (b) 50-8
0 Violet: (a) 25-50 (b) -20
-45 Green: (a) -40 to -70 (b) 50 to 8
FIG. 1 shows an example of a hue range that can be expressed in a case where three colors of orange, violet, and green are added to the three primary colors and the black color in the present invention. In FIG. 1, it can be seen that the range surrounded by the solid line is the expressible hue range in this case, and is larger than the range surrounded by the conventional dotted line.

The dye ink used for addition is not particularly limited as long as it satisfies the above-mentioned values a and b. The following dyes can be used, for example, as ink jet type inks having excellent clarity and light fastness. <Reactive dye> (i) Orange C.I. I. Reactive Orange 1,4
5, 7, 12, 14, 15, 16, 20, 29, 30 (ii) Violet C.I. I. Reactive Violet 1,2,
4, 5, 6, 8, 9, 22, 34, 36 (iii) Green C.I. I. Reactive Green 5,6,1
2,15,19,21

<Acid dye> (i) Orange C.I. I. Acid Orange 7,10,56,9
4,142 (ii) Violet C.I. I. Acid Violet 19, 48, 49,
129 (iii) Green C.I. I. Acid Green 5, 6, 12, 15,
19, 21

<Disperse Dye> (i) Orange I. Disperse Orange 1,3,1
1,13,20,25,29,30,31,32,4
7, 55, 66 (ii) Violet C.I. I. Disperse Violet 1,4
8,23,26,28,31,33,35,38,4
8, 56 (iii) Green C.I. I. Disperse Green 6,9

<Direct Dye> (i) Orange C.I. I. Direct Orange 26, 29, 3
4,39,102,118 (ii) Violet C.I. I. Direct Violet 9, 35, 4
7, 51, 66, 93, 95 (iii) Green C.I. I. Direct Green 26, 59, 67

In the present invention, as a medium for dissolving or dispersing the dye, a medium in conventional general printing,
A medium used in a conventional ink jet system can be used, and examples thereof include water or a mixture of water and an organic solvent, but water is generally used. Various dispersants, surfactants, viscosity modifiers, surface tension modifiers,
A pH adjuster, a conductivity adjuster, an anti-drying agent, a dyeing improver, a jetting improver, etc. are added as required. As the pre-treatment, treatment is performed with a treating agent such as a dye fixing agent, a permeation inhibitor, or a bleeding inhibitor. The printed fabric is then 80
After drying at ~ 120 ° C, the dye is fixed by a method corresponding to the dye, washed and dried.

The ink for ink jet textile printing is applied by embedding a heating resistor element in a nozzle, causing the ink to boil by the heat generation, and ejecting the ink by the pressure of the bubble, and applying an electric signal to a piezoelectric element. A pulse jet method in which ink is deformed to excite the volume change of the ink chamber and eject ink particles, ink is continuously ejected from the nozzle that is ultrasonically vibrating under pressure and turned into particles, and the particles are controlled to the charge amount. And a charge control method for recording the data separately for recording and non-recording particles.

[0014]

Next, the present invention will be specifically described based on examples. Example 1 Warp density of 130 consisting of 50th single yarn and 50th single yarn of weft
A 100% cotton plain woven fabric having a density of 70 pieces / inch and a weft density of 70 pieces / inch was subjected to calcining, desizing, scouring, bleaching, and mercerizing by a generally known method. The plain fabric was treated with a fluorinated water repellent Sumifluoyl EM21 (manufactured by Sumitomo Chemical Co., Ltd.).
Immediately after padding an aqueous solution containing 0.3 parts and 2 parts of baking soda, squeezing was performed with a mangle at a pickup rate of 70%.
Dry at 20 ° C. for 3 minutes. Next, a reactive dye ink was prepared according to the following formulation, and printing was performed using an ink jet printer using each ink. Reactive dye 15 parts Water 85 parts Violet: C.I. I. Reactive Vio
let 1 yellow: C.I. I. Reactive Yel
low 95 red: C.I. I. Reactive Red
24 Blue: C.I. I. Reactive Blu
e72 Black: C.I. I. Reactive Bla
ck 8 After drying at 120 ° C. for 2 minutes, saturated steam 10
Example 1 was steamed at 2 ° C. for 8 minutes and then washed.
Got the product.

Comparative Example 1 The same procedures as in Example 1 were carried out except for the dye ink shown below to obtain a product of Comparative Example 1. Yellow: C.I. I. Reactive Yellow
95 Red: C.I. I. Reactive Red 24 Blue: C.I. I. Reactive Blue 72 Black: C.I. I. Reactive Black 8

The printed fabric obtained in Example 1 was able to express a wide range of hues in which the entire hue range obtained by ordinary screen printing other than ink jet printing was secured. The print fabric obtained in Comparative Example 1 had a low density and an extremely narrow hue range as compared with the examples.

Example 2 A warp density of 1 consisting of a warp 140 twin yarn and a weft 140 double yarn
Fuji silk of 22 spun / inch and a weft density of 105 spun / inch was subjected to baking, desizing, scouring and bleaching by a generally known method. After the plain fabric was padded with an aqueous solution containing 0.3 parts of a fluorinated water repellent Sumifluoyl EM21 (manufactured by Sumitomo Chemical Co., Ltd.) and 1 part of ammonium sulfate (pH adjuster), a pickup rate of 70 was immediately obtained using a mangle. %
And dried at 120 ° C. for 3 minutes. Next, an acid dye ink was prepared according to the following formulation, and printing was performed with an ink jet printer using each ink. Acid dye 5 parts Water 95 parts Violet: C.I. I. Acid Violet 19 orange: C.I. I. Acid Orange 10 Red: C.I. I. Acid Red 131 Yellow: C.I. I. Acid Yellow 72 Blue: C.I. I. Acid Blue 7 Black: C.I. I. Acid Black 110 After drying at 120 ° C. for 2 minutes, saturated steam 10
Example 2 steamed at 2 ° C. for 30 minutes, then washed
Got the product.

Comparative Example 2 The same treatment as in Example 2 was carried out except for the dye inks shown below. Yellow: C.I. I. Acid Yellow 72 Red: C.I. I. Acid Red 6 Blue: C.I. I. Acid Blue 7 Black: C.I. I. Acid Black 8

The printed fabric obtained in Example 2 was able to express a wide range of hues in which the entire hue range obtained by ordinary screen printing other than ink jet printing was secured. The print fabric obtained in Comparative Example 2 had a low density and an extremely narrow hue range as compared with the Examples.

[0020]

According to the present invention, the range of hues that can be expressed is expanded by using dyes of five or more colors, and is required as a wide-range printed product that cannot be expressed by conventional ink jet printing using four-color inks. Hue can be expressed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a hue range that can be expressed in the present invention.

FIG. 2 is an explanatory diagram showing a maximum hue range that can be conventionally expressed.

[Explanation of symbols]

 1 Hue range that can be expressed in the present invention 2 Maximum hue range that can be expressed conventionally

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-62-243890 (JP, A) JP-A-5-209378 (JP, A) JP-A-6-25576 (JP, A) JP-A-1- 229682 (JP, A)

Claims (1)

(57) [Claims] 1. In addition to the three primary colors and black color dyes, one or more dyes are selected from orange, violet and green according to the hue, and a total of five or more dyes are used. Inkjet printing method. (Orange: (a) 20-70 (b) 50-
90 violet: (a) 20-70 (b) -20
-50 Green: (a) -20 to -70 (b) 50 to 9
0 (a, b are perceived chromaticity indices defined in CIE1976 (L, a, b) space.))