JPH08283636A - Ink for ink jet recording and recording - Google Patents

Abstract

PURPOSE: To obtain an ink having high coloring property without selecting a medium to be recorded, having excellent light fastness of the printed, matter, quickly drying and not generating deterioration by including a pigment, an emulsion containing a low MFT resin and an emulsion containing a high TG resin. CONSTITUTION: The objective ink includes at least (A) a pigment, (B) an emulsion containing a low MFT resin having 60-100 deg.C MFT (e.g. styrene acrylate) and (C) an emulsion containing a high TG resin having 140-200 deg.C TG and is used to recording paper or a recording medium such as cotton and a silk fabric. The component A is preferably added with a dispersant, if necessary, and treated to disperse by a beads mill, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink composition for an ink jet printer and a recording method for obtaining an ink image on a recording medium such as recording paper and cotton or silk fiber by ejecting ink droplets from a recording head.

[0002]

2. Description of the Related Art Screen printing and roller printing, which are the mainstream of conventional printing, are not suitable for high-mix low-volume production, and it is difficult to respond quickly to trends, and platemaking is not required these days. A printing system using inkjet recording has been proposed.

For example, in Japanese Unexamined Patent Publication No. Hei 6-271801, (1) color is developed at a sufficient density, (2) ejection nozzles are not clogged, (3) ink is quickly dried on a cloth, For the purpose of (4) less irregular bleeding on the fabric, (5) no change in physical properties and ejection characteristics during storage, and no precipitation of solids, dicarboxylic acid and By containing / or an alkali metal salt thereof, dyeing characteristics such as level dyeing property, dyeing property, color forming property, and saturation are excellent with respect to a fabric containing cellulose fibers and / or polyamide fibers, and ink is stored. An inkjet printing ink and a recording method which are excellent in stability have been proposed.

[0004]

However, in the above-mentioned conventional example, textile printing is carried out with a reactive dye (preferably a reactive dye having a vinyl sulfone group and / or a monochlorotriazine group). When the printed matter is repeatedly washed, discoloration occurs due to the ionic species in the detergent and washing fastness cannot be obtained. Further, since it is a dye, there is a problem that light resistance cannot be obtained.

Further, since dicarboxylic acid and alkali metal (lithium, sodium, potassium) are added to the ink, if the pH is not strictly controlled, lumpy foreign matter such as organic acid will be generated and clogging of the discharge nozzle will occur. May cause. This foreign substance can be dealt with in the case of specialized use in the printing field, but it is difficult to use for general consumer products.

Further, since the dyeing on the cloth is carried out by using the reactive dye, there is a problem that the dyeing properties such as the coloring property and the saturation are different depending on the kind of the cloth.

Therefore, an object of the present invention is to solve the problems of conventional general printing ink and ink jet printing, namely,
(1) Color develops at a sufficient density, (2) does not clog the discharge nozzle, (3) ink dries quickly on the fabric, (4) little irregular bleeding on the recording medium (5) Changes in physical properties and ejection characteristics during storage,
No precipitation of solids, and (6) No change in ejection characteristics over long-term durability. In addition, (7) Securing wash fastness of printed matter, (8) Securing light resistance of printed matter. To provide a possible ink-jet recording ink and recording method.

[0008]

The ink for ink jet recording of the present invention is an ink jet recording in which the ink ejected from the ink ejection head reaches the recording medium and at the same time heats the ink from the platen through the recording medium. An ink used in the method, comprising at least a pigment and M
It is characterized by containing a low MFT resin emulsion having an FT of 60 ° C. to 100 ° C. and a high TG resin emulsion having a TG of 140 ° C. to 200 ° C.

According to the recording method of the present invention, the ink ejected from the ink ejection head in the ink jet recording apparatus reaches the recording medium, and at the same time, heat is applied from the platen through the recording medium to fix and print the printed matter. And a second step of re-fixing the printed matter by heating outside the recording apparatus.

Further, in the recording method of the present invention, a method of completing printing only in the first step and a method of completing both printing in the first step and the second step are used depending on the type of recording medium. It is characterized by

Further, in the recording method of the present invention, when the recording medium is paper, heat is applied from the platen through the paper in the recording device to fix the printed matter in the first step. When the printing is completed and the recording medium is cloth, the first step of fixing the printed matter by applying heat from the platen through the recording medium in the recording device, and further heating outside the recording device It is characterized in that the second step of re-fixing the printed matter is properly used.

The low MFT resin emulsion has an MFT of 60.
If it is below ℃, the blocking property of the printed matter becomes a problem,
If the temperature is 100 ° C. or higher, clogging of the ink ejection head may occur. In addition, T of high TG resin emulsion
If G is 140 ° C. or less, the washing fastness of the printed matter printed on the fabric cannot be ensured, and if it exceeds 200 ° C., there is a problem that the fabric is thermally deformed during re-fixing.

[0013]

According to the present invention, as a result of improving the ink to simultaneously satisfy the above-mentioned various required characteristics, which have been the conventional problems, the recording medium (cloth or paper) can be selected by using the pigment. It has high color development and can secure the light resistance of the printed matter.

Further, by applying heat to the printed matter from the platen via the recording medium at the same time as printing in the ink jet device, the ink is quickly dried on the recording medium and irregular bleeding does not occur. Became possible.

Further, by using the pigment, deterioration of ink properties due to decomposition of dye during storage of ink, change in ejection characteristics and clogging of ejection nozzle due to this do not occur.

Further, in the recording method according to the present invention, the printed matter is fixed by a low MF in the recording device when the recording medium is paper.
It is performed at a temperature exceeding the MFT of the T resin emulsion.

The temperature of the platen at this time is a temperature at which the fixing strength is sufficient for the paper (MFT temperature of the low MFT resin emulsion or more, considering the clogging of the ink discharge head, and the ink solvent is dried). Sufficient temperature). The fixing by forming a film of the low MFT resin emulsion shows sufficient fixing strength on paper, but it is necessary to further increase the fixing strength of the printed matter in consideration of washing resistance when printing on the fiber.

Therefore, when the recording medium is a cloth, it is possible to obtain a printed matter with suppressed bleeding by heating the printed matter with heat from the platen in the recording apparatus. It is possible to improve the washing resistance by re-fixing by the fixing means of the body at a temperature exceeding the TG of the high TG resin emulsion.

The ink jet recording ink of the present invention comprises
At least a low MFT resin emulsion in which the MFT of the pigment and the thermoplastic resin emulsion is 60 ° C. to 100 ° C. or lower and a high MFT resin emulsion in which the MFT is 140 ° C. or higher are essential components.

Examples of pigments that can be used in the ink of the present invention include organic pigments and inorganic pigments.
For black, furnace black, lamp black,
Carbon black (CI pigment black 7) such as acetylene black and channel black, or copper oxide, iron oxide (CI pigment black 1)
1), metals such as titanium oxide, aniline black (C.
I. Pigment Black 1) and other organic pigments.

For color, C.I. I. Pigment Yellow 1 (Fast Yellow G), 3, 1
2 (this as yellow AAA), 13, 14, 17, 24, 3
4, 35, 37, 42 (yellow iron oxide), 53, 55, 8
1, 83 (This As Yellow HR), 95, 97, 98, 10
0, 101, 104, 108, 109, 110, 11
7, 120, 138, 153, C.I. I. Pigment Red 1, 2, 3, 5, 17, 22 (Brilliant First Scarlet), 23, 31, 38, 48: 2 (Permanentlet 2B (B
a)), 48: 2 (permanentlet 2B (Ca)), 48: 3 (permanentlet 2B (Sr)), 48: 4 (permanentlet 2B (Mn)), 4
9: 1, 52: 2, 53: 1, 57: 1 (Brilliant Carmine 6B),
60: 1, 63: 1, 63: 2, 64: 1, 81 (Rotamine 6G
Rake), 83, 88, 101 (bengara), 104, 1
05, 106, 108 (Cadmium Let), 112, 11
4,122 (quinacridone magenta), 123,146,14
9, 166, 168, 170, 172, 177, 17
8, 179, 185, 190, 193, 209, 21
9, C.I. I. Pigment Blue 1, 2, 15 (Phthalocyanine Blue R), 15: 1, 15: 2, 15: 3 (Phthalocyanine Blue)
G), 15: 4, 15: 6 (phthalocyanine blue E), 16, 17:
1, 56, 60, 63, etc. can be used.

The amount added is preferably 0.5 to 30% by weight, more preferably 1.0 to 12% by weight. If the addition amount is less than this, the printing density cannot be secured, and if the addition amount is more than this, structural viscosity occurs in the viscosity characteristic of the ink, and the ejection stability cannot be secured.

A pigment having a particle size of 25 μm or less is used, and it is more preferable to use a pigment having a particle size of 1 μm or less.

Furthermore, in order to uniformly disperse these colorants, if necessary, the dispersant is added to the pigment in an amount of 0.5 to 200 wt.
%, Preferably 1 to 50 wt%, more preferably 10 to 30 wt%, and it is desirable to carry out dispersion treatment with a bead mill or the like.

A typical example of the dispersant for dispersing the pigment used in the ink of the present invention is an acrylic resin, and specific examples of such an acrylic resin include, for example, a styrene-acrylic acid copolymer and an acrylic resin. Acid-acrylic acid alkyl ester copolymer, styrene-acrylic acid-
Acrylic acid alkyl ester copolymer, styrene-methacrylic acid copolymer, styrene-methacrylic acid-acrylic acid alkyl ester copolymer, styrene-α-methylstyrene-acrylic acid copolymer, styrene-α-methylstyrene-acrylic Examples thereof include salts such as acid-acrylic acid alkyl ester copolymers.

As a substance (counter ion) that forms a salt with the above-mentioned dispersant, for example, aminomethyl propanol, 2-aminoisopropanol, triethanolamine, morpholine, aqueous ammonia and the like can be used. Further, propylene glycol, isopropanol and the like may be used as a dissolution aid.

Further, in order to obtain the dissolution stability of the dispersant, it is necessary to add a pH buffer solution so that the salt in the dispersant is easily ion-dissociated to adjust the ink to an optimum pH value. Specific examples of the pH buffer solution include potassium hydrogen phthalate, potassium dihydrogen phosphate, disodium hydrogen phosphate,
Sodium tetraborate, potassium hydrogen tartrate, sodium hydrogen carbonate, sodium carbonate, tris (hydroxymethyl) aminomethane, tris (hydroxymethyl) aminomethane hydrochloride and the like are used.

Examples of thermoplastic resin emulsions that can be used in the ink of the present invention include styrene-acrylic acid ester copolymers, polyacrylic acid esters, polymethacrylic acid esters, polystyrenes, polyethylacrylic acid esters, and styrene-butadiene. Copolymer, butadiene copolymer, acrylonitrile-butadiene copolymer, chloroprene copolymer, crosslinked acrylic resin, crosslinked styrene resin, fluororesin, vinylidene fluoride, benzoguanamine resin, polyolefin resin, styrene-methacrylic acid ester copolymer Coalesce, polystyrene, styrene-acrylamide copolymer, n-isobutyl acrylate, acrylonitrile, vinyl acetate, acrylamide,
Polyvinyl acetal, rosin resin, polyethylene,
It is a suspension of vinylidene chloride resin, vinyl acetate resin, ethylene-vinyl acetate copolymer, vinyl acetate-acrylic copolymer, vinyl chloride resin and the like in water. Moreover, the low MFT resin emulsion (MFT = 60 ° C.
100 ° C or less) and high MFT resin emulsion (MFT =
140 ° C or higher), the main skeleton is the above-mentioned resin, and the molecular weight, addition chemical groups to the main skeleton, etc.
FT is different.

In order to maintain the dispersion stability of these thermoplastic resin emulsions as well as the pigment, it is necessary to adjust the pH of the ink to the optimum pH. Therefore, in order to maintain the dispersion stability of both the pigment and the thermoplastic resin emulsion, it is necessary to maintain the pH value of the ink within the optimum range for both.

Further, the viscosity of these thermoplastic resin emulsions increases as the addition amount increases, so it is preferable to limit the addition amount to about 5 to 40% by weight with respect to the entire ink. .

Conventionally, water has been mainly used as the ink solvent because of its low viscosity, excellent safety, easy handling, low cost, and no odor. As the ink material, pure water or ultrapure water that has undergone a purification process such as ion exchange or distillation is desirable.

In addition, the ink of the present invention has
A saccharide can be used for the purpose of improving the fixability of the ink on the recording medium. Specific examples include glucose, xylose, sucrose (sucrose), maltose, arabinose, maltitol, monosaccharides such as starch, disaccharides,
Examples include polysaccharides and glycosides.

Further, urea, thiourea, ethylene urea and the like can be added for the purpose of preventing nozzle drying.

A hydrophilic high-boiling point low-volatile solvent is added to the ink of the present invention in order to impart the effects of nozzle clogging resistance, moisture retention and dispersion stability. Specific examples include glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol,
High boiling point and low volatility polyhydric alcohols such as dipropylene glycol, hexylene glycol, polyethylene glycol and polypropylene glycol are used, or their monoether compounds, diether compounds, ester compounds such as ethylene glycol monomethyl ether,
Ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, etc. are used, and other N-methyl-2pyrrolidone, 1.3-dimethylimidazolidinone, monoethanolamine, N, N −
No bleeding occurs with hydrophilic high-boiling low-volatile solvents such as nitrogen-containing organic solvents such as dimethylethanolamine, N, N-diethylethanolamine, diethanolamine, Nn-butyldiethanolamine, triisopropanolamine, triethanolamine. It can be added in a range.

For the purpose of improving the drying property, highly volatile monohydric alcohols such as ethanol, propanol, isopropanol and butanol can be added to water as a main solvent in a small amount.

[0036]

EXAMPLES Specific examples of the ink jet recording ink of the present invention will be described in detail below.

Ink example 1 (shown in Table 1) of the ink jet recording ink of the present invention was manufactured by the following procedure, but the invention is not limited thereto.

An aqueous dispersion comprising a pigment, a styrene-acrylic acid copolymer (addition amount: pigment ratio 0.2) as a dispersant, and triethanolamine (addition amount: neutralization equivalent of the styrene-acrylic copolymer). Was dispersed by a bead mill, and it was confirmed by microscopic observation that the pigment particles were in a monodispersed state, and a pH-adjusted thermoplastic resin emulsion (high MFT resin emulsion and low MFT resin emulsion were mixed in advance), A hydrophilic high-boiling point low-volatile solvent is added, and the mixture is further stirred for 30 minutes and stirred for complete uniform mixing. In the case of this ink, the pH value was adjusted within the range of 8 to 10. The dispersion liquid was filtered through a membrane filter having a pore size of 10 μm to remove dust and coarse particles to obtain an inkjet recording ink according to the present invention.

Table 1 shows Ink Examples 1 to 8 of the ink jet recording ink according to the present invention prepared by the same method as the above manufacturing method. The values in the table indicate the amount added in% by weight.

[0040]

[Table 1]

Ink composition examples 9 to 20 as comparative examples of the ink jet recording ink according to the present invention are shown in Table 2. The values in the table indicate the amount added in% by weight.

[0042]

[Table 2]

Inks Examples 2-20 were made in the same manner as Inks Example 1.

Next, Ink Example 2 which is an ink composition of another comparative example of the ink for ink jet recording according to the present invention.
1, 22 are shown below.

Ink Example 21 CIReactive Red 226 10 parts by weight Thioglycol 15 parts by weight Diethylene glycol 10 parts by weight Ion-exchanged water 60 parts by weight Ink Example 21 is substantially the same as the ink composition reported in JP-A-6-271801. Is. In the production, thiodiglycol and diethylene glycol were added to ion-exchanged water in the above ratio, and then the reactive dye was added. Thereafter, the pH was adjusted to 7 with sodium hydroxide and filtered through a membrane filter (hole diameter 0.8 μm) to obtain an ink of Ink Example 21.

Ink Example 22 CI Direct Black 19 19 4.0 parts by weight Diethylene glycol 15.0 parts by weight Ion-exchanged water 81.0 parts by weight Ink Example 22 is substantially the same as the ink of a commercially available dye-based inkjet printer. The preparation method of Ink Example 22 is a method in which ion-exchanged water and diethylene glycol are mixed and stirred, and then a dye is directly added and completely dissolved, followed by filtration with a membrane filter.

Next, an evaluation method of the ink examples of the ink jet recording ink of the present invention and the ink examples of the comparative examples will be described.

As the evaluation items, there were 1. Time course (the ink of each ink example was left sealed at 50 ° C. for 1 month). pH change, 2. Change in viscosity, 3. The evaluation was performed based on the state of foreign matter generation.

The respective evaluation methods and judgment methods are as follows.

1. pH change ⊚: No change from the preferable initial value. ◯: Appropriate change is within 5% of the initial value, which is an allowable level. X: The inappropriate change is 5% or more with respect to the initial value.

2. Foreign matter situation A small amount of ink was taken on a slide glass and observed with a microscope (400 times) to compare with the initial state. ⊚: Suitable No foreign matter is generated. ◯: There is an appropriate amount of foreign matter, but it is not a size that causes clogging in the ink ejection nozzle. X: Inappropriate foreign matter is generated and the size causes clogging.

3. Change in viscosity ⊚: No change from the preferred initial value. ◯: Appropriate change is within 5% of the initial value, which is an allowable level. X: The inappropriate change is 5% or more with respect to the initial value.

Ink examples 1 and 2 based on the above evaluation method
The evaluation results of 2 are shown in Table 3.

[0054]

[Table 3]

As shown in the above table, the ink jet recording ink of the present invention maintained the initial pH and viscosity even after being left for a long time, did not generate foreign matters, and was excellent in storage stability.

Next, the recording method of the present invention using the above-mentioned ink will be described.

FIG. 1 is a perspective view showing a characteristic constitution of an ink jet printer used for evaluation of the first step of the recording method of the present invention.

The recording head 2 is an ink jet recording head of the type using a piezoelectric element, and has a plurality of nozzles arranged in an arbitrary matrix, and a carriage device that moves in parallel to the platen 1 at a position facing the platen 1. It is installed in 7.

Further, a heater 6 is arranged inside the platen 1, and the platen 1 is heated by a temperature sensing means (not shown) and a heater control means (not shown) so that the surface temperature becomes equal to or higher than the softening temperature of the thermoplastic resin emulsion in the ink. Are controlled. In this implementation, the platen temperature is 120
It is controlled to reach ℃. In this apparatus, the distance between the inkjet recording head and the platen is about 1.5 mm, and the temperature of the inkjet recording head is approximately 40 ° C. to 50 ° C., depending on the type of recording medium. The surface temperature was 80 ° C to 110 ° C.

When the platen 1 is used in the first step of the recording method of the present invention in which heat is applied to the recording medium, the platen 1 is controlled under the above-mentioned conditions, but it is not the recording method of the present invention ( The platen is not heated when the heat is not applied at the time of writing from the ejection head to the recording medium.

An ink container 21 is connected to the recording head 2 and ink is supplied as needed.

The platen 1 is made of a material tube made of aluminum and a layer of silicone rubber or the like as a surface layer. The paper pressing rollers 3 and 4 are in contact with the platen 1 to form a recording medium 5.
Along the platen 1 and is rotated by a drive device (not shown).

The recording head 2 to which the ink is supplied from the ink container 21 ejects ink droplets from its nozzle in accordance with the printing pattern, and the recording medium whose surface temperature is heated above the softening temperature of the low MFT resin emulsion in the ink. Write an ink image on 5. When the ink is heated on the recording medium 5, the solid content concentration rises and the viscosity rapidly increases, and the low MFT resin emulsion is fused to prevent bleeding and the like, and high print quality and printing are achieved. Robustness is obtained.
If the recording medium does not require wash fastness such as paper,
A recording medium which has sufficient fixing strength for printed matter in the first step, but requires fastness to washing by printing fibers and the like is further prepared in the second step.
To improve the fixing strength.

The second step of the recording method of the present invention was performed with a household iron. In addition to the iron, a heat roller, a dryer (hot air generator) or the like can be used, and the essential condition is that the heating temperature can be raised to TG or higher (200 ° C.) or higher of the high TG resin emulsion.

Regarding Step 1 and Step 2 according to the recording method of the present invention described so far, the following four pattern recording methods were carried out using the inks of Ink Examples 1 to 22, and the effects were confirmed.

Pattern A: Step 1 is performed by heating the platen in the recording apparatus at the time of writing the ink on the recording medium.
Then, the printed matter is fixed again by ironing outside the recording apparatus. This pattern is a recording method for performing both the first step and the second step according to the present invention.

Pattern B: Step 1 by heating the platen in the recording apparatus at the time of writing the ink on the recording medium.
Then, the printed matter was not re-fixed with an iron or the like outside the recording apparatus. When printing and recording with this pattern, if the recording medium is paper, it corresponds to the recording method of the present invention, and if the recording medium is cloth, it corresponds to the comparative example of the recording method of the present invention.

Pattern C: The platen in the recording apparatus was not particularly heated when the ink was written on the recording medium.
The printed matter was fixed with an iron outside the recording apparatus. This pattern corresponds to a comparative example of the recording method of the present invention.

Pattern D: The platen in the recording apparatus was not particularly heated when the ink was written on the recording medium.
Further, the printed matter was not re-fixed by an iron or the like outside the recording apparatus. This pattern corresponds to a comparative example of the recording method of the present invention.

To confirm the effect, the above-described four-pattern recording method was carried out for each of three types of recording media (copy paper, cotton, polyester fiber, 6.6 nylon).

The confirmation of the effect is as follows. Print density, 2.
Bleeding of printed matter 3. Washing fastness of printed matter 4. Light resistance of printed matter, 5. A test was carried out for clogging during printing, and the following classifications were evaluated.

1. Printing density ⊚: Suitable Printing density (od value) is 1.2 or more. B: Suitable print density is 1.0 or more and less than 1.2. X: Not suitable The print density is less than 1.0.

2. Bleeding ⊚: Suitable Bleeding cannot be confirmed visually. B: Appropriate bleeding can be visually confirmed, but fine characters can be read without any trouble. ×: Inappropriately fine characters cannot be read.

3. Washing fastness ◎: Suitable Washing is carried out 10 times with a household washing machine,
Keep the initial print density. Δ: Suitable Perform regular washing 10 times with a household washing machine,
The print density is kept at 95% or more of the initial value. ×: Not suitable Do regular washing with a home washing machine 10 times,
The print density is less than 95% of the initial value.

4. Light resistance ⊚: Suitable It is exposed to the direct sunlight of the sun for 10 days to maintain the initial print density. X: Not suitable After exposure to direct sunlight for 10 days, the print density becomes less than 95% of the initial value.

5. Print clogging Printed ruled lines on the recording medium and judge by the following classification. ⊚: Suitable It is possible to print clean ruled lines without ink scattering. ○: Appropriate, although there is some scattering, but acceptable. ×: Inappropriate Scattering of ruled lines is severe, and dot omission etc. may occur in some cases.

Table 4 shows the inks used, the recording patterns used, and the recording media used for Examples 1 to 32 of the present invention based on the above evaluation conditions and criteria. Table 5 shows the evaluation results of the examples of the present invention.

[0078]

[Table 4]

[0079]

[Table 5]

Table 6 shows the inks used, the recording patterns used, and the recording media used for Comparative Examples 1 to 40 of the present invention. Table 7 shows the evaluation results of the comparative examples of the present invention.

[0081]

[Table 6]

[0082]

[Table 7]

As shown in the table above, the recording method of the present invention is
1. Print density, 2. Bleeding of printed matter 3. Washing fastness of printed matter 4. Light resistance of printed matter, 5. It was suitable for any evaluation item of clogging during printing.

On the other hand, the comparative example of the recording method of the present invention is as follows. Print density, 2. Bleeding of printed matter 3. Washing fastness of printed matter 4. Light resistance of printed matter, 5. The results include that if any of the evaluation items for clogging during printing is allowed, it can be used or is not worth using at all. In particular, the recording methods using the conventional dye-based inks shown in Comparative Examples 13 to 16 rarely satisfy the evaluation items.

[0085]

EFFECTS OF THE INVENTION By using the ink jet recording ink and the recording method of the present invention, there are problems of conventional general printing ink and ink jet printing, namely, (1) color development at a sufficient density, (2) Do not clog the discharge nozzle, (3) the ink dries quickly on the cloth, (4) there is little irregular bleeding on the cloth,
(5) No change in physical properties or ejection characteristics during storage, no solid deposition, (6) No change in ejection characteristics during long-term durability, and (7) printed matter It is possible to secure washing fastness and (8) secure light resistance of printed matter. Moreover, since the recording method of the present invention is a pigment-based ink, good printing can be performed without selecting a cloth like reactive dyes or direct dyes. Further, as a special effect of the present invention, it is possible to provide an apparatus which allows easy desired printing on a cloth in a general household without using special equipment in the textile printing field.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an inkjet recording apparatus used for evaluation of ink composition examples of Examples and Comparative Examples of the present invention.

[Explanation of symbols]

 1: Platen 2: Recording Head 3: Paper Pressing Roller 4: Paper Pressing Roller 5: Recording Paper (Recording Medium) 6: Heater 7: Carriage 21: Ink Container

Claims (4)

[Claims] 1. An inkjet recording ink for use in an inkjet recording method in which heat ejected from an ink ejection head reaches a recording medium and at the same time heat is applied to the ink from a platen via the recording medium. Pigment, low MFT resin emulsion having MFT of 60 ° C to 100 ° C, TG of 140 ° C to 200
An ink for inkjet recording comprising a high TG resin emulsion having a temperature of 0 ° C. 2. A printed matter obtained by using the ink according to claim 1 and applying heat from a platen through the recording medium at the same time when the ink ejected from the ink ejection head in the ink jet recording apparatus reaches the recording medium. A recording method comprising: a first step of fixing the toner to complete printing, and a second step of re-fixing the printed matter by further heating outside the recording apparatus. 3. A method of using the ink according to claim 1 to complete printing only in the first step, and a method of completing both of the first step and the second step to complete printing. A recording method characterized by being used properly according to. 4. When the ink according to claim 1 is used and the recording medium is paper, heat is applied from a platen through the paper in the recording device to fix the printed matter, thereby completing the printing. Printing is completed in the process, and when the recording medium is cloth, the first step of fixing the printed matter by applying heat from the platen via the recording medium in the recording device, and further heating outside the recording device Therefore, the recording method is characterized by selectively using the second step of re-fixing the printed matter.