JPH11279959A - Transfer printing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer print a pattern firmly on a cloth without needing high grade technology nor an expensive apparatus by transfer printing a specific electrostatic latent image on an intermediary sheet, allowing to be fused on it and treating under specific conditions. SOLUTION: An electrostatic latent image, which is formed by developing with a toner containing a dye dispersed in a water-soluble fusing resin powder of an acrylic resin obtained by polymerizing 5-50 mol.% of a carboxylic acid- containing vinyl monomer and 50-95 mol.% of a carboxylic acid-free vinyl monomer, 50 mol.% or more of which carboxylic acid-free vinyl monomer is one or more kinds selected from acrylic acid esters of a 1-18C aliphatic alcohol, methacrylic acid esters of a 1-18C aliphatic alcohol, styrene and vinyltoluene, is transferred to an intermediary sheet and fused on it. The intermediary sheet is laid on the top of a cloth, the toner on the intermediary sheet is transferred to the cloth, they are heated, the color of the dye contained in the toner is developed, an alkaline solution is applied on the cloth, the toner is washed out with water, and as a result the transfer printing is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer printing method for reproducing a pattern on a fabric.

[0002]

2. Description of the Related Art A transfer printing method in which a transfer paper on which a pattern is printed with an ink containing a dye is heated and pressed on a fabric and the pattern is transferred to the fabric is known as a transfer printing method.

[0003]

The conventional transfer printing method is as follows.
Since the dye is heated to cause sublimation transfer from the transfer paper to the fabric, the dye to be used is limited to those having sublimability, and the fabric is also a polyester fiber or an acetate fiber on which the sublimable dye is dyed. The dyes transferred to the fabric are also sublimable, and therefore have poor light fastness. The transfer paper is prepared by printing a pattern on a base paper by a gravure printing machine or a screen printing machine, and since the printing requires a gravure roll or a screen engraved with the design, transfer paper is used. In some cases, it is quicker to directly print a design on a fabric using a gravure roll or screen than by printing.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is to reproduce a pattern on a base sheet by an electrostatic copying machine without using a gravure roll or a screen on which the pattern is drawn, and to use a general-purpose dye without limiting the dye used at that time to a sublimable dye. The purpose of the present invention is to transfer various designs to fabrics in a robust manner.

[0005]

According to the transfer printing method of the present invention (claim 1), an electrostatic latent image developed with a toner containing a water-soluble heat-fusible resin powder in which a dye is dispersed is used. A developing step of transferring the toner to the sheet and thermally fusing it, a step of superimposing the intermediate sheet on the cloth, a step of transferring the toner of the intermediate sheet to the cloth and heating the resultant to form a dye contained in the toner; The first feature is that an alkaline solution is applied to wash and remove the toner.

A second feature of the transfer printing method according to the present invention (Claim 2) is that, in addition to the first feature, a water-soluble heat-fusible resin is used in an amount of 5 to 50 mol% of a vinyl monomer containing a carboxylic acid. , Preferably 10 to 30 mol%, and 50 to 95 mol%, preferably 70 to 95 mol%, of a vinyl monomer containing no carboxylic acid.
Acrylic resin obtained by polymerizing ９０90 mol%, and 50 mol% or more of the vinyl monomer containing no carboxylic acid,
An acrylate or methacrylate of an aliphatic alcohol having 1 to 18 carbon atoms, styrene and vinyltoluene.

A third feature of the transfer printing method according to the present invention (claim 3) is that, in addition to the first feature, a water-soluble heat-fusible resin is polymerized with a diol component and a carboxylic acid component as main components. 5 to 40 mol% of the carboxylic acid component is at least one of a sulfonate of a trivalent or more polyvalent carboxylic acid and a dicarboxylic acid.

A fourth feature of the transfer printing method according to the present invention (claim 4) is that, in addition to the first, second or third features, the water-soluble heat-fusible resin is made alkali-water-soluble. It is in.

The toner according to the present invention (claim 5) is used in the transfer printing method described above, and contains a water-soluble heat-fusible resin powder in which a dye is dispersed. This is the feature of 1.

A second feature of the toner according to the present invention (claim 6) is that, in addition to the first feature, the water-soluble heat-fusible resin contains 5 to 50 mol% of a vinyl monomer containing a carboxylic acid.
Preferably 10 to 30 mol% and 50 to 95 mol%, preferably 70 to 90 mol% of carboxylic acid-free vinyl monomer.
A mole% of an acrylic resin is polymerized, and 50% by mole or more of a vinyl monomer containing no carboxylic acid is an acrylate or methacrylate of an aliphatic alcohol having 1 to 18 carbon atoms, any of styrene and vinyl toluene. One or more acrylic resins are used.

A third feature of the toner according to the present invention (claim 7) is that, in addition to the first feature, a polyester obtained by polymerizing a diol component and a carboxylic acid component as main components in a water-soluble heat-fusible resin. Resin, and the carboxylic acid component 5
The use of a polyester resin in which 40 mol% is at least one of a sulfonate of a trivalent or higher polycarboxylic acid and a dicarboxylic acid.

A fourth feature of the toner according to the present invention (claim 8) is that, in addition to the first and second or third features,
The water-soluble heat-fusible resin is alkali-water-soluble.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrostatic latent image is developed by using an electrophotographic electrostatic copying machine, forming a design such as a sketch or a photograph on the charged photoreceptor, and developing with a toner. The electrostatic copying machine may be a digital type or an analog type. The toner is required to have a melting point of 50 ° C. or more to prevent solidification due to preheating in the electrostatic copying machine, and to have a moisture absorption resistance for preventing moisture absorption and solidification during storage. A volume resistivity value of 10 ¹² Ωcm or more, preferably 10 ¹⁴ Ωcm or more at 30 ° C. × 75% relative humidity is required, and heat fusion of the electrostatic latent image to the media sheet, heat transfer from the media sheet to the fabric, In addition, a melting point of 100 to 160 ° C. and a melt viscosity of 10 ² to 10 ⁴ poise at the melting point are required for transferring and dyeing the dye to the fabric during the heating and coloring step. Water solubility required for washing and removal is required. The water-soluble heat-fusible resin used in the toner of the present invention satisfies these requirements, and is characterized in that it can be neutralized with an alkaline solution to be water-soluble, and can be removed by washing with water.

The water-soluble heat-fusible resin contains 5 to 50 mol%, preferably 10 to 3 mol% of a vinyl monomer containing a carboxylic acid.
0 mol% and a carboxylic acid-free vinyl monomer containing not less than 50 mol% of at least one of acrylic acid or methacrylic acid ester of aliphatic alcohol having 1 to 18 carbon atoms, styrene and vinyl toluene.
95 mol%, preferably 70 to 90 mol% of an acrylic resin or a diol component and a carboxylic acid component are polymerized as main components, and a polycarboxylic acid having a valence of 3 or more and It is preferable to use a polyester resin containing 5 to 40 mol% of any one or more of sulfonates of dicarboxylic acids.

The content of the vinyl monomer component containing carboxylic acid of the acrylic resin is set to 5 mol% or more in order to easily dissolve the toner in an alkaline aqueous solution and to easily remove it by washing. This is for imparting the toner with moisture absorption resistance necessary for preventing moisture absorption and solidification during storage.

The reason why the amount of the vinyl monomer component containing no carboxylic acid of the acrylic resin is set to 50 mol% or more is to impart a moisture absorption resistance to the toner and to give a volume specific resistance required for developing an electrostatic latent image. The reason for making the content 95% by mole or less is to provide the toner with appropriate flexibility so that the electrostatic latent image thermally fused to the intermediate sheet is hardened and does not crack or peel off.

The reason why the content of at least one of acrylic acid or methacrylic acid ester of aliphatic alcohol having 1 to 18 carbon atoms, styrene and vinyl toluene is 50 mol% or more of the vinyl monomer component containing no carboxylic acid is as follows. In addition to imparting the necessary heat-fusibility for developing the electrostatic latent image without impairing the aqueous alkali solubility, the toner is provided with the necessary adhesive strength so that the electrostatic latent image heat-fused to the intermediate sheet is not peeled off. In particular, in order to impart heat sealability, the vinyl monomer component containing no carboxylic acid is required
0 mol% or more is a compound having 1 to 18 carbon atoms, preferably 4 carbon atoms.
It is recommended to use acrylates or methacrylates of -18 aliphatic alcohols, styrene and vinyltoluene.

The alcohol constituting the acrylate or methacrylate of the aliphatic alcohol having 1 to 18 carbon atoms includes methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, and the like.
n-butyl alcohol, isobutyl alcohol, tertiary butyl alcohol, hexyl alcohol, pentyl alcohol, octyl alcohol, nonyl alcohol, 2-ethylhexyl alcohol, decyl alcohol, lauryl alcohol, cetyl alcohol, myristyl alcohol, stearyl alcohol, oleyl alcohol, etc. are used. Is done. As the vinyl monomer component containing a carboxylic acid, acrylic acid, methacrylic acid, itaconic acid, maleic acid, and vinyl acetic acid are used.

The diol component of the polyester resin includes ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, hexaethylene glycol, hebutaethylene glycol, octaethylene glycol,
1,3-propanediol, propylene glycol,
1,3 butanediol, 1,5-pentadiol,
1,6-hexanediol, 2,2-dimethyl-1,3
-Propanediol, 2-ethyl-2-butyl-1,3
-Propanediol, 2-ethyl-2-isobutyl-
1,3-propanediol, 2,2,4-trimethyl-
1,6-hexanediol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol,
1,4-cyclohexanedimethanol, 2,2,4,4
-Tetramethyl-1,3-cyclobutanediol, 4-
4'-dihydroxybiphenol, 4,4'-methylenediphenol, 4,4'-isopropylidenediphenol, 3-chloro-1,2-propanediol, 4,4 '
-Dihydroxydiphenylsulfone, 4,4'-thiodiphenol, o-dihydroxybenzene, m-dihydroxybenzene, p-dihydroxybenzene, p-xylenediol, 1,5-dihydroxynaphthalene, 2,5
One or two glycols such as dihydroxynaphthalene, aliphatic diols, alicyclic diols and aromatic diols can be used.

The carboxylic acid component of the polyester resin includes oxalic acid, malonic acid, dimethylmalonic acid, succinic acid, glutaric acid, adipic acid, bimeric acid, 2,2-
Dimethyl glutaric acid, suberic acid, azelaic acid, sebacic acid, fumaric acid, maleic acid, itaconic acid, 1,
3-cyclopentanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, diglycolic acid, thiodipropionic acid, phthalic acid, isophthalic acid, terephthalic acid, diphenic acid, 4,4'-oxydibenzoic acid, 4,4'- One or more aliphatics such as sulfonyl dibenzoic acid, naphthalic acid, 1,2-naphthalene dicarboxylic acid, 1,4-naphthalene dicarboxylic acid, 1,5-naphthalene dicarboxylic acid, and 2,6-naphthalene dicarboxylic acid , Alicyclic or aromatic acids can be used. The dicarboxylic acid component of the polyester resin includes anhydrides, esters,
Acid chlorides, halides and the like.

Examples of the trivalent or higher polycarboxylic acid of the polyester resin include hemi-mellitic acid, trimellitic acid, trimedic acid, melophanic acid, pyromellitic acid, benzenepentacarboxylic acid, melitic acid, cyclopropane-1,
2,3-tricarboxylic acid, cyclopentane-1,2,2
3,4-tetracarboxylic acid, ethanetetracarboxylic acid and the like are used. The trivalent or higher polycarboxylic acid of the polyester resin includes anhydrides, esters, acid chlorides and the like corresponding to the above acids.

The amount of the trivalent or higher polycarboxylic acid used is 5 to 40 mol%, preferably 10 to 30 mol%, based on all carboxylic acid components. If the amount used is less than 5 mol%, an alkali-water-soluble polyester resin cannot be obtained, and if the amount used exceeds 40 mol%, the degree of polymerization of the polyester resin is lowered and the adhesion and durability are reduced. This is not preferable because the toner tends to absorb and solidify during storage.

As the sulfonic acid salt of dicarboxylic acid as a component of the polyester resin, sodium or potassium salts such as sulfophthalic acid, sulfoisophthalic acid, sulfoterephthalic acid, and 4-sulfonaphthalene-2,7-dicarboxylic acid are used. Is done. The amount of the sulfonate used is 5 to 4
0 mol%, preferably 10 to 30 mol%. If the used amount is less than 5 mol%, it is difficult to wash and remove the toner. If the used amount exceeds 40 mol%, the volume specific resistance required for developing the electrostatic latent image cannot be obtained, and The coating strength and the adhesive strength of the latent image are also reduced, the hydrophilicity is high, the composition is easily absorbed by moisture, and the storage stability of the toner is reduced.

The toner is prepared by dispersing a dye in a water-soluble heat-fusible resin, and pulverizing the dispersion so that the particle diameter becomes 100 μm or less. The toner is appropriately blended with a boron compound and other charge suppressing agents, dyeing assistants such as titanium oxide, amorphous titania, and external additives for charge control such as silica. Especially,
A water repellent such as a fluorine-based compound, a silicon-based compound, or a zirconium-based compound is added to the toner in order to prevent the toner during storage from absorbing moisture to make the inter-particle capacitance and surface resistance unstable. Good.

Depending on the type of the fabric fiber, the dye is, for example, a direct dye or a reactive dye for cellulosic fibers, an acid dye, a gold-containing dye, or a polyester for nylon, wool, silk or other polyamide fibers. Disperse dyes are mainly used for fibers, and cationic dyes are mainly used for acrylic fibers.

As a specific example, as a direct dye, Direct Fast Ye manufactured by Sumitomo Chemical Co., Ltd.
low R Special (Yellow-8
6) Direct Fas manufactured by Sumitomo Chemical Co., Ltd.
t Scarlet 4BS (Red-23), Direct Fast Blac, manufactured by Sumitomo Chemical Co., Ltd.
kConc (Black-51), Nippon Kayaku Kogyo Co., Ltd., Kayaku Direct Sky Blue
5B (Blue-15) is used.

As the reactive dye, Ciba-Geigy Co., Ltd.
Cibacron Gold Yellow 2R (O
range-21), Cibacr manufactured by Ciba-Geigy
onRed 3B (Red-45), Cibacron Blue 2R (Blue-1) manufactured by Ciba-Geigy
3), Cibacron Blac manufactured by Ciba-Geigy
kBG (Black-1), Rem manufactured by Dystar
azol BrillBlue 3R (Blue-2
8), Remazol Brill manufactured by Dystar
Yellow 4GL (Yellow-160), IC
I Company Procion Scarlet PR (R
ed-13) is used.

1; As the type 2 gold-containing dye, Kayakalan Yellow GL manufactured by Nippon Kayaku Kogyo Co., Ltd.
143 (Yellow-121), Nippon Kayaku Kogyo Co., Ltd., Kayakalan Scarlet GL
(Red-317), manufactured by Sumitomo Chemical Co., Ltd. Lan
yl Yellow RR200% (Orange-8
7) Lanyl Brill manufactured by Sumitomo Chemical Co., Ltd.
l Blue Ge / c (Blue-127), Lanyl Black KBG e manufactured by Sumitomo Chemical Co., Ltd.
/ C (Blac-107) is used.

As the acid dye, Mitui Acid Fast Yellow manufactured by Mitsui Chemicals, Inc.
G Conc (Yellow-17), Mitsui Acid mill Red, manufactured by Mitsui Chemicals, Inc.
3B (Red-131), M, manufactured by Mitsui Chemicals, Inc.
itui Acid mill Sky BlueFS
E (Blue-112), manufactured by Sumitomo Chemical Co., Ltd. S
uminol mill Black B (Black
-109) is used.

As the disperse dye, Kayalan Polyester Yellow manufactured by Nippon Kayaku Co., Ltd.
w GG-E (Yellow-242), Nippon Kayaku Kogyo Co., Ltd., Kayalan Polyester O
range R-SF (Orange-73), Nippon Kayaku Kogyo Co., Ltd., Kayalan Polyester
r Red BR-S (Red-154), Nippon Kayaku Kogyo Co., Ltd., Kayalan Polyester
Blue 2R-SF (Blue-266), Kiwalon Polyester manufactured by Kiwa Chemical Industry Co., Ltd.
Fast Yellow G (Yellow-3),
Kiwalon Polye manufactured by Kiwa Chemical Industry Co., Ltd.
Ster Orange 2GF (Orange-4
4) Miketon Fa manufactured by Mitsui Chemicals, Inc.
st Black BRL, manufactured by Mitsui Chemicals, Inc.
Miketon Fast Red R (Red-1
7) is used.

As the cationic dye, Aizen Cathilon Yellow manufactured by Hodogaya Chemical Industry Co., Ltd.
w 7GLH (Yellow-21), Aizen Cathilon Bril manufactured by Hodogaya Chemical Industry Co., Ltd.
lpink CD-BH (Violet-11), Hodogaya Chemical Aizen Cathilon BlueCD
-FBLH (Blue-77), Aizen Catilon Black M manufactured by Hodogaya Chemical Industry Co., Ltd.
H, Bayer Astrazon Yellow
5GL 200% (Yellow-51), Astrazon Blue 5GL 200% manufactured by Bayer AG
(Blue-45) is used.

As the mediating sheet, base paper used for conventional transfer paper may be used. However, preferably, the media is subjected to a release treatment in order to facilitate transfer of the toner from the mediating sheet to the fabric under pressure. Coated paper with low adhesive strength to toner and toner, T
Laminated paper or the like is used in which polypropylene or other non-adhesive resin that is heated and melted from a die extruder and extruded into a film shape is thinly laminated on paper. Heating for the coloring process of the dye may be dry heat or steam heat, or may be performed while the intermediate sheet is superimposed on the cloth without peeling. The washing step is performed according to the conventional screen printing or hand printing. In the washing step, the alkaline solution is prepared by adding sodium alkylsulfonate, sodium alkylcarboxylate, and other alkali solubilizing agents to aqueous sodium hydroxide, soda ash, and aqueous ammonia.

[0033]

Example 1 87 g (0.68 mol) of butyl acrylate
And 80 g (0.8 mol) of methyl methacrylate, 40 g (12 mol) of stearyl methacrylate and 12 g of acrylic acid
(0.16 mol) and 240 g of a mixture of 21 g (0.24 mol) of methacrylic acid and ethyl alcohol 900
g of benzoyl peroxide as a polymerization catalyst was added thereto, and solution polymerization was carried out at 78 to 80 ° C. under reflux, and the polymerization reaction was terminated 4 hours after the start of the polymerization. I got 100 parts by weight of the water-soluble heat-fusible acrylic resin powder and a reactive dye (Ciba manufactured by Ciba-Geigy)
cron Gold Yellow 2R (Orange
e21) 15 parts by weight of titanium oxide, 5 parts by weight of titanium oxide, and 5 parts by weight of a fluororesin (Asahigard AG-925 manufactured by Asahi Glass Co., Ltd.) are heated and kneaded, and after cooling, passed through a jet pulverizer to have a particle size of 30 to 40 μm. Fine powder, and the fine powder 100
The toner prepared by mixing and stirring 1000 parts by weight of the iron powder carrier with respect to parts by weight was loaded into a dry electrostatic copying machine for office use, and the original image was copied on a sheet having releasability to obtain an intermediate sheet. This medium sheet is superimposed on a cotton fabric, and pressure-bonded by a pressure roll (surface temperature: 105 ° C., pressure: 5 kg / cm ² ), the release sheet is peeled off, and the toner (design) of the medium sheet is transferred to the cotton fabric, Sodium silicate (Na ₂ O
nSiO ₂ · nH ₂ O) is padded with an aqueous alkali solution to color the cotton fibers, then steamed at 100 ° C. for 5 minutes, and immersed in an aqueous solution (90 ° C.) containing sodium alkylsulfonate at 5 g / liter for 1 minute. Then, the fabric was washed with water according to a conventional method to obtain an orange-colored printed cotton fabric.

[0034]

Example 2 83 g (0.5 mol) of terephthalic acid, 66 g (0.4 mol) of isophthalic acid, ethylene glycol 6
2 g (1 mol), 52 g of neopentyl glycol (0.
5 mol) and 47 g (0.1 mol) of 5-sulfoisophthalic acid were charged into a flask, and 25 g of the mixture was passed while passing an inert gas.
The temperature was raised to 0 ° C. over 3 hours, and then cooled, 5 mm
A polycondensation reaction was carried out at a pressure and temperature of Hg × 250 ° C. for 40 minutes, and the reaction was continued at 190 ° C. until 3000 poise to obtain a water-soluble heat-fusible polyester resin. 100 parts by weight of this water-soluble heat-fusible polyester resin and a disperse dye (Kayalon Polyne manufactured by Nippon Chemical Industry Co., Ltd.)
(Ster Yellow GG-E), 15 parts by weight of titanium oxide, and 5 parts by weight of a fluororesin (Asahigard AG-925, manufactured by Asahi Glass Co., Ltd.) were heated and kneaded, and after cooling, passed through a jet pulverizer to obtain a particle size of 30. A powder prepared by mixing and stirring 1000 parts by weight of an iron powder carrier with 100 parts by weight of a fine powder of up to 40 μm is loaded into a dry electrostatic copying machine for office use, and the original image is formed on a releasable sheet. Was copied to obtain an intermediate sheet. This medium sheet is superimposed on a polyester fabric, and a pressure roll (surface temperature: 150 ° C.,
Pressure release bonding was performed under a pressure of 10 kg / cm ² ), the release sheet was peeled off, the toner (design) on the medium sheet was transferred to a polyester fabric, and the dye was heated and colored by steaming at 130 ° C. for 20 minutes. Next, 5 g / l of caustic soda and 5 g / l of sodium alkylsulfonate are mixed with water, and the polyester fabric is immersed in an aqueous alkali solution adjusted to 95 ° C. for 2 minutes, stirred, washed with water according to a conventional method, and the toner is washed and removed. Then, an orange-colored polyester fabric print was obtained.

[0035]

Example 3 83 g (0.5 mol) of terephthalic acid, 83 g (0.5 mol) of isophthalic acid, ethylene glycol 3
1 g (0.5 mol), 68 g of neobenzyl glycol
(0.65 mol) was charged into a flask, and heated to 250 ° C. over 3 hours while passing an inert gas. After confirming that the acid value of the system was 10 or less, the system was cooled to 190 ° C., at which point trimellitic anhydride (0.3 mol) was added to carry out an addition reaction. A heat-fusible polyester resin was obtained. 100 parts by weight of this water-soluble heat-fusible polyester resin and an acid dye (Mitsui Acid Fast Yellow manufactured by Mitsui Chemicals, Inc.)
w G Conc) 15 parts by weight, titanium oxide 5 parts by weight and fluororesin (Asahi Guard AG-92 manufactured by Asahi Glass Co., Ltd.)
5) 5 parts by weight are heated and kneaded. After cooling, the mixture is passed through a jet pulverizer to obtain a fine powder having a particle size of 30 to 40 μm. 1000 parts by weight of an iron powder carrier is mixed with 100 parts by weight of the fine powder and stirred. The prepared toner was loaded into an office dry electrostatic copying machine, and the original image was copied on a sheet having releasability to obtain an intermediate sheet. The medium sheet is superimposed on the silk fabric and pressure-bonded by a pressure roll (surface temperature: 130 ° C., pressure: 5 kg / cm ² ), the release sheet is peeled off, and the toner (design) of the medium sheet is transferred to the silk fabric. Then, the dye was heated and colored by steaming at 100 ° C. for 30 minutes. Next, sodium bicarbonate 3 g / liter and sodium alkyl sulfonate 5
g / l in water, immerse the silk fabric in an aqueous alkaline solution adjusted to 95 ° C. for 2 minutes, stir, wash with water according to a conventional method to wash and remove the toner, and obtain a silk fabric printed product that has developed a yellow color. Was.

[0036]

Example 4 137 g of terephthalic acid (0.83 mol based on total carboxylic acid), 68 g of isophthalic acid (0.41 mol based on total carboxylic acid), 29 g of adipic acid (0.20 mol based on total carboxylic acid), 5-sulfoisophthalic acid 53
g (0.18 mol) and 223 g (2.01 mol) of ethylene glycol as a diol component were placed in a flask, and the temperature was raised to 250 ° C. over 3 hours while passing an inert gas. 77 g of melic acid
(0.41 mol), and the reaction was carried out at 200 ° C. under reduced pressure to obtain a water-soluble heat-fusible polyester resin.
100 parts by weight of this water-soluble heat-fusible polyester resin and direct dye (Direct Fa manufactured by Sumitomo Chemical Co., Ltd.)
st Yellow R Special ・ Yellow
w-86) 10 parts by weight are heated and kneaded. After cooling, the mixture is passed through a jet pulverizer to obtain a fine powder having a particle size of 30 to 40 μm.
Iron powder carrier 1000 per 100 parts by weight of the fine powder
The toner prepared by mixing and stirring the parts by weight was loaded into a dry electrostatic copying machine for office use, and the original image was copied on a sheet having releasability to obtain an intermediate sheet. This medium sheet is superimposed on a cotton fabric and a pressure roll (surface temperature: 105 ° C., pressure: 5 kg / c)
m ² ), the releasable sheet is peeled off, and the toner (design) of the medium sheet is transferred to a cotton fabric.
And steamed for 10 minutes at a temperature of 5 g of sodium alkyl sulfonate /
Liter and an aqueous alkaline solution (85 ° C.) of 5 g / liter of caustic soda for 2 minutes and washed with water according to a conventional method to obtain a printed cotton fabric printed in yellow. Further, the medium sheet is superimposed on a silk fabric, and is then placed on a pressing roll (surface temperature: 105 ° C., pressure: 5 ° C.).
kg / cm ² ), the release sheet is peeled off, and the toner (design) of the medium sheet is transferred to the silk fabric.
Steamed at 100 ° C. for 10 minutes, immersed in an aqueous alkaline solution (80 ° C.) of 2 g / L of sodium bicarbonate and 5 g / L of sodium alkylsulfonate for 5 minutes, washed with water according to a conventional method, and obtained a cotton fabric print colored yellow. .

[0037]

According to the present invention, an intermediate sheet (transfer paper) can be obtained without using a gravure roll or a screen engraved with a design.
Is obtained, and the pattern transferred to the fabric becomes a robust one in which the dye is colored by heating. The pattern is not directly transferred to the fabric by the electrostatic copying machine, but is first copied to a smooth mediating sheet (paper) having no irregularities due to warp or weft and then transferred to the fabric. As in the case of conventional transfer printing.

Without transferring the toner directly to the cloth as described above,
Since the transfer is performed by superimposing and heat-sealing the intermediate sheets,
There is no need to pre-treat the fabric to facilitate the transfer of the toner, and the fibers used for the fabric are not limited to those exhibiting high adhesiveness to the toner. Therefore, even when a commercially available dry electrostatic copying machine for office use having a low copying speed is used, the heating color forming process and the desizing process can be continuously and efficiently performed at high speed.

In the present invention, the toner is transferred to the cloth by swelling or dissolving with an alkaline solution to facilitate washing and removal. However, the method of dyeing and finishing the fabric includes a relaxation treatment for reducing the weight by eroding a part of the fiber with an alkali solution and finishing the fabric softly, or a mercerizing treatment for smoothing the surface of the fiber by contracting the surface of the fiber with the alkali solution. There is also an alkali washing treatment for washing with an alkaline solution as a post-processing in dyeing. For this reason, the washing process in the present invention includes, for example, 2 to 5 g / liter of caustic soda, 2 to 5 g / liter of hydrosulfite, and 2 g / liter of an anionic surfactant which are usually used for polyester fiber cloth. Such as reduction cleaning using a processing solution consisting of, or a two-phase method in which a cellulose fiber fabric to be dyed with a reactive dye is treated with a sodium silicate aqueous solution at 100 ° C. for 5 minutes, as part of a conventional dyeing finishing process. It can also be performed as.

As described above, according to the present invention, the transfer of the pattern to the media sheet (paper) can be performed by a commercially available dry electrostatic copying machine for office use. The present invention can be easily implemented without the need.

Claims (8)

[Claims] 1. A developing step in which an electrostatic latent image developed with a toner containing a water-soluble heat-fusible resin powder in which a dye is dispersed is transferred to a medium sheet and heat-fused, and the medium sheet is coated with a fabric. Transfer printing method comprising a heating and coloring step of transferring the toner of the media sheet to the cloth by heating and developing a dye contained in the toner, and a washing step of applying an alkaline solution to the cloth and washing and removing the toner with water. . 2. The water-soluble heat-fusible resin according to claim 1, wherein the water-soluble heat-fusible resin is 5 to 50 mol% of a carboxylic acid-containing vinyl monomer.
And an acrylic resin obtained by polymerizing 50 to 95 mol% of a vinyl monomer containing no carboxylic acid, wherein 50 mol% or more of the vinyl monomer containing no carboxylic acid has 1 to 1 carbon atoms.
The transfer printing method according to claim 1, wherein the transfer printing method is any one or more selected from the group consisting of an acrylate or methacrylate of an aliphatic alcohol, styrene and vinyl toluene. 3. The water-soluble heat-fusible resin according to claim 1 is a polyester resin obtained by polymerizing a diol component and a carboxylic acid component as main components, and 5 to 40 mol% of the carboxylic acid component is: 2. The transfer printing method according to claim 1, which is at least one of a sulfonate of a trivalent or higher polycarboxylic acid and a dicarboxylic acid. 4. The transfer printing method according to claim 1, wherein the water-soluble heat-fusible resin according to claim 1 is alkali-water-soluble. 5. A transfer printing toner having a water-soluble heat-fusible resin powder in which a dye is dispersed. 6. The water-soluble heat-fusible resin according to claim 5, wherein the carboxylic acid-containing vinyl monomer is 5 to 50 mol% and the carboxylic acid-free vinyl monomer is 50 to 95 mol%.
Is an acrylic resin obtained by polymerizing carboxylic acid, wherein 50 mol% or more of the vinyl monomer containing no carboxylic acid has 1 to 1 carbon atoms.
The transfer printing toner according to claim 5, wherein the toner is any one or more selected from an acrylate or methacrylate of an aliphatic alcohol, styrene and vinyl toluene. 7. The water-soluble heat-sealable resin according to claim 5 is a polyester resin obtained by polymerizing a diol component and a carboxylic acid component as main components, and the carboxylic acid component 5
6. The transfer printing toner according to claim 5, wherein 〜40 mol% is at least one of a sulfonate of a trivalent or higher polycarboxylic acid and a dicarboxylic acid. 8. The transfer printing toner according to claim 5, wherein the water-soluble heat-fusible resin according to claim 5 is alkali-water-soluble.