JP2003231367A - Receiving cloth for heat-melting type thermal transfer recording and recording method using the cloth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiving cloth for heat-melting type thermal transfer recording excellent in transfer properties during thermal recording, washing resistance of a recorded image, and heat resistance and a recording method using the cloth. <P>SOLUTION: In the receiving cloth for heat-melting type thermal transfer, an ink receiving layer for receiving ink melted or softened by heat is formed on one surface of a support of a fabric or a nonwoven fabric, and a tackifying layer is formed on the other surface. The ink receiving layer comprises hollow particles having at least gas inside and a thermoplastic substance. The cloth has an islands (the hollow particles)-sea (the thermoplastic substance) structure. The recording method uses the cloth. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer property at the time of heat recording, a wash resistance of a recorded image, which is used in combination with a heat melting type thermal transfer recording medium having a heat melting ink layer on a support. The present invention relates to a heat-melt type thermal transfer recording receiving cloth having excellent heat resistance, and a recording method using the same.

[0002]

2. Description of the Related Art Conventionally, various thermal transfer recording methods have been proposed, one of which is a heat-melting type thermal transfer recording medium having a heat-melting ink layer and an ink receiving layer provided on a support. A heat fusion type thermal transfer recording method is known in which various information and images are formed on an image receiver. This image receptor is widely used as a printing sheet such as various recording / display labels and advertising banners. Further, in recent years, in the field of cleaning industry, work efficiency is being improved by a bar code method, and in this field, the use of a cleaning tag composed of an image receptor recording a bar code for customer management is expanding.

As a support for the image receptor, generally,
Paper, plastic film such as polyester, polypropylene, polyethylene, or synthetic paper is used, but the image receiver is a display label for clothes or the like, a banner for advertisement,
When it is used as a cleaning tag, it is subjected to washing, drying, ironing, etc. with a detergent solution containing a detergent and a bleaching agent, so it is required to have washing resistance, heat resistance, etc. as well as texture and mechanical strength. . Therefore, when it is used for such an application, an image receptor (receptor cloth) is used in which an ink receptor layer made of a polyester resin or a polyurethane resin is formed on a support mainly made of a woven or non-woven fabric. However, when a woven or non-woven fabric is used as the support, the smoothness of the surface is inferior, so that there is a problem in that it is difficult to obtain a uniform and strong transfer image by printing using a thermal transfer recording medium.

Therefore, various improvements have been made to improve the transferability of the above-mentioned receiving cloth during thermal recording. For example, Japanese Patent Laid-Open No. 7-89252 (Patent Document 1) discloses:
An ink receiving layer made of a fine granular structure and a resin is disclosed in Japanese Patent Publication No. 4-50920 (Patent Document 2), and an ink receiving layer made of a porous polyurethane obtained from a water-in-oil polyurethane emulsion is clothed. Although it has been proposed to form it above, it cannot be a sufficiently satisfactory measure as described below.

For example, an ink receiving layer composed of a fine granular structure and a resin has a problem that a sufficient printed image cannot be obtained due to poor transfer uniformity and a high printing energy is required at the time of printing. . On the other hand, in the ink receiving layer formed from the water-in-oil polyurethane emulsion, a uniform transfer image can be obtained, but a coating liquid prepared by dispersing water in a fine particle state in an organic solvent in which a urethane resin is dissolved is applied on the cloth. In order to form the ink receiving layer by coating on, the coating liquid must be evaporated and the viscosity must be increased in the manufacturing process, and there is a manufacturing problem that the use of an organic solvent is essential.

[0006]

[Patent Document 1] Japanese Patent Application Laid-Open No. 7-89252

[Patent Document 2] Japanese Patent Publication No. 4-50920

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the object of the present invention is to obtain a heat-melting type thermal transfer recording receiver excellent in transferability at the time of thermal recording, washing resistance of recorded images and heat resistance. To provide a cloth and a recording method using the cloth.

[0008]

As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention have found that an ink receiving device that receives an ink melted or softened by heat on one surface of a woven or non-woven fabric support. In a heat-melting type thermal transfer recording receiving cloth provided with a layer and a tackifying layer on the other surface, the ink receiving layer is formed of hollow particles containing at least gas inside and a thermoplastic material, and It was found that the above problems can be achieved by forming the hollow particles in the form of islands and the thermoplastic material as the sea, and the present invention has been completed based on such findings.

That is, according to the present invention, there are provided the following heat-melt type thermal transfer recording receiving cloth and a recording method using the same.

(1) Support of a woven or non-woven fabric,
In a heat-melting type thermal transfer recording receiving cloth having an ink receiving layer for receiving ink melted or softened by heat on one surface and a tackifying layer on the other surface, the ink receiving layer is at least inside. A heat-fusion type thermal transfer recording receiving cloth comprising hollow particles containing a gas and a thermoplastic substance, wherein the hollow particles are formed into islands and the thermoplastic substance is a sea.

(2) The hollow particles have an average particle size of 0.1.
The heat-fusion type thermal transfer recording receiving cloth according to (1) above, having a hollowness of 10 μm and a hollowness of 75% or more.

(3) The hot-melt type thermal transfer recording receiving cloth according to (1) or (2), wherein the thermoplastic material is an ionomer type polyester polyurethane resin.

(4) The heat-fusion type thermal transfer recording receiving cloth according to any one of (1) to (3), wherein the support is a polyester resin woven or non-woven fabric heat-treated at a temperature of 100 ° C. or higher. .

(5) The hot-melt type thermal transfer recording receiving cloth according to any one of (1) to (4), wherein the tackifying layer is a heat-adhesive film made of a polyamide resin or a polyurethane resin.

(6) Melt type thermal transfer recording comprising a surface layer containing at least a thermoplastic resin having a melting point of 100 ° C. or more on the heat melting type thermal transfer recording receiving cloth described in any one of (1) to (5) above. A recording method characterized by performing thermal printing using a medium.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The heat-melt type thermal transfer recording receiving cloth of the present invention comprises an ink receiving layer for receiving ink melted or softened by heat on one surface (surface) of a support made of a woven or non-woven fabric. In a melting type thermal transfer recording receiving cloth provided with a tackifying layer on the other surface (back surface), the ink receiving layer is composed of hollow particles containing at least gas inside and a thermoplastic substance, and It is characterized in that it is formed into a sea-island shape in which the hollow particles are islands and the thermoplastic material is the sea.

In the present invention, since the ink receiving layer is formed into a sea-island shape having hollow particles as islands and a thermoplastic substance as the sea, the transferability during thermal recording is particularly excellent, and the washability and heat resistance of the recorded image are excellent. It is possible to obtain a heat-fusion type thermal transfer recording receiving cloth having excellent properties.

The support for forming the ink receiving layer is not particularly limited, and conventionally known woven or non-woven fabrics using fibers such as nylon, acrylic, polyester, rayon, acetate and cotton can be used. Excellent processability and excellent resistance to chlorine bleach
It is preferable to use polyester taffeta fibers of 0 to 150 d.

In order to improve the heat resistance of the support and prevent shrinkage and curling due to ironing or the like, a woven fabric or a non-woven fabric to be the support is formed before forming the ink receiving layer on the support. It is preferable to perform heat treatment at a temperature of 100 ° C. or higher. The temperature used for this heat treatment may be appropriately set based on the heat resistant temperature required for the support,
Also, the fibers used in the woven or non-woven fabric may be pre-heat treated.

As described above, the present invention is characterized in that the ink receiving layer is formed in a sea-island shape having hollow particles as islands and a thermoplastic substance as the sea. As a method for forming the ink receiving layer in a sea-island shape, it can be obtained by applying a coating liquid for forming the ink receiving layer containing hollow particles and a thermoplastic substance and drying it. By lowering the viscosity of the working fluid, when the coating fluid is applied on a support made of a woven or non-woven fabric, a part of the thermoplastic material selectively penetrates into the fibers of the woven or non-woven fabric, and the hollow particles are woven or It can be formed on a non-woven fabric, and can be formed into a sea-island shape in which the hollow particles are islands and the thermoplastic is sea. The ink receiving layer thus formed has a strong adhesive force with a woven fabric or a non-woven fabric as a support, can obtain excellent resistance to washing, and has excellent transferability and heat resistance during thermal recording.

Further, if the difference in specific gravity between the hollow particles and the thermoplastic substance is utilized, the hollow particles are gathered on the surface of the ink receiving layer and the thermoplastic substance is gathered on the support side of the woven or non-woven fabric. Is easily penetrated, and the adhesive force between the woven or non-woven fabric and the ink receiving layer is improved, resulting in excellent washing resistance, transferability, and heat resistance. In order to reduce the viscosity of the coating liquid for the ink receiving layer, it is preferable to use a water-insoluble or sparingly soluble thermoplastic substance as an emulsion.

The coating amount of the coating liquid is 10 to 100 g / m.
The range is ² . When the coating amount is less than the above range, the transferability of the ink receiving layer at the time of thermal recording is deteriorated, while when it is more than the above range, the texture of the ink receiving layer is deteriorated, which is not preferable.

The material of the above hollow particles is not particularly limited, but acrylic resin, styrene resin, acryl-styrene resin,
It is preferable to use hollow particles produced from vinylidene chloride resin or the like.

The shape of the hollow particles is not particularly limited, and various conventionally known hollow particles containing air or other gas therein can be used, but they have cushioning properties, heat insulating properties and transfer properties. In order to maintain a good balance, it is preferable to use hollow particles having a particle diameter (weight average particle diameter) of 0.1 to 10 μm and a hollow ratio of 75% or more.

If the particle diameter (weight average particle diameter) is less than 0.1 μm, the cushioning property and the heat insulating property are insufficient, while if it exceeds 10 μm, the surface smoothness is deteriorated and transfer defects such as voids occur. It is not preferable because it occurs. Hollow rate is 7
If it is less than 5%, the cushioning property and the heat insulating property become insufficient, and the particle specific gravity becomes large, so that a good sea-island state cannot be formed, which is not preferable. The hollow rate is more preferably 80% or more.

Further, the partition wall thickness of the hollow particles is determined almost automatically by the particle diameter and the hollow ratio, but if it is less than 0.05 μm, it is destroyed during the formation of the ink receiving layer or the image formation. If it is thicker than 5 μm, the cushioning property and the heat insulating property are deteriorated, so 0.05 μm to 5 μm
To the range of. The "hollowness" of the hollow particles is the volume ratio of gas in the hollow particles.

The content of the hollow particles in the ink receiving layer is such that the weight ratio of the hollow particles to the thermoplastic material is 1: 9 to.
Adjust to be 4: 6. When the weight ratio of the both is lower than the above range, the transferability of the ink receiving layer at the time of thermal recording is deteriorated. On the other hand, when it is higher than the above range, the strength of the ink receiving layer is decreased and the washing resistance is decreased, which is preferable. Absent.

The thermoplastic material used as a binder for the ink receiving layer is not particularly limited as long as it can receive and retain ink melted or softened by heat, and examples thereof include elastomers such as rubber, polyolefin resins, and the like. Polyester resin, polyamide resin, polyurethane resin, vinyl chloride resin, styrene resin, butyral resin, phenol resin, acrylonitrile resin, ethylene-vinyl acetate copolymer resin, ethylene-
Acrylic copolymer resin or the like can be used. In order to enhance the ink receptivity and image fixability of the ink receiving layer, a thermoplastic material having an SP value close to the SP value of the surface layer of the thermal transfer recording medium is selected, and emulsified, dispersed, etc., to be used as an aqueous emulsion. Preferably.
The ionomer type polyester polyurethane resin is particularly preferable because it has excellent washing resistance.

The proportion of each component constituting the ink receiving layer is 10 to 50% by weight of hollow particles and 50% of thermoplastic material.
~ 90%. If the proportion of the hollow particles is less than 10%, the thermal sensitivity is lowered, while if it is more than 50%, the strength of the ink receiving layer is lowered, which is not preferable. On the other hand, if the proportion of the thermoplastic substance is less than 50%, the fixability of the heat-meltable ink is deteriorated, while if it is more than 90%, the proportion of the hollow particles is lowered and the thermal sensitivity is lowered, which is not preferable.
In addition to the above components, additives such as pigments, fluorescent whitening agents and anti-fading agents may be added to the ink receiving layer for the purpose of preventing yellowing of the background.

The tackifying layer provided on the back surface of the support is not particularly limited, and conventionally known hot-melt adhesives such as polyolefin-based, polyester-based, polyamide-based and polyurethane-based adhesives can be used. In order to improve the above, it is preferable to use a polyamide-based or polyurethane-based adhesive. The thickness of the tackifying layer is 50 μm in order to obtain sufficient adhesive strength and wash resistance.
That is all.

The method of forming the tackifying layer is not particularly limited, and, for example, a method of dissolving the hot melt adhesive in a suitable solvent and coating it on the back surface of the receiving cloth, or the hot melt adhesive is used. It is possible to use a method in which a film-shaped product is attached to the back surface of the receiving cloth, but since the resistance to chlorine bleaching agent is improved and the adhesive strength reduction due to washing can be prevented, a film-shaped hot melt adhesive is used. Preference is given to using.

The method for applying the film-like hot melt adhesive to the support is not particularly limited, but for example,
A method in which an adhesive hot-coated on glassine paper coated with a silicone release agent and a support are combined and heat-bonded by a heat roll or the like, or an acrylic or SBR adhesive having a low Tg on the support. It is possible to use a method in which a small amount of is applied and a film adhesive is attached.

The receiving cloth is provided with an intermediate layer between the support and the ink receiving layer to the extent that it does not hinder the selective penetration of a part of the thermoplastic material into the fibers of the woven or non-woven fabric. Is also good. The coating amount varies depending on the type of receiving cloth, but is preferably 8 μm or less, more preferably 5 μm or less.

By providing such an extremely thin intermediate layer, the adhesive force between the support and the ink receiving layer can be obtained without inhibiting a part of the thermoplastic material from selectively penetrating into the fibers of the woven or non-woven fabric. Can be further improved. The intermediate layer is preferably formed of a resin having a high elasticity, such as a butadiene-styrene copolymer, a butadiene-acrylonitrile copolymer, an ethylene-vinyl acetate copolymer, an ethylene-ethylene acrylate copolymer.

The heat transfer recording medium used in combination with the heat-melt type thermal transfer recording receiving cloth is a heat-melt type heat transfer recording medium having a heat-meltable or heat-softening ink layer on a support. As the body, various conventionally known ones,
For example, polyester films such as polyethylene terephthalate, polycarbonate, triacetyl cellulose, nylon, and polyimide having relatively high heat resistance, cellophane, sulfuric acid paper, and the like are used.

Various conventionally known colorants are used as the colorant of the ink layer, and the binder resin is usually a polyester resin, a polyamide resin, a polyurethane resin, a vinyl chloride resin, a styrene resin. Thermoplastic resins having excellent heat resistance, mechanical strength, and solvent resistance such as butyral resin, phenol resin, and acrylonitrile resin are used.

The weight ratio of each component constituting the ink layer is 5 to 30 in terms of colorant / binder resin / wax ratio.
A range of / 30 to 95/0 to 30 is used. In addition to the colorant and the binder resin, a thermofusible substance such as wax or an auxiliary agent such as a filler is added to the ink layer for the purpose of improving sensitivity.

If necessary, an intermediate layer is provided between the support and the ink layer for the purpose of promoting peeling of the ink layer during transfer or preventing the ink layer from falling off.
A protective layer is provided for the purpose of preventing scumming when it is sandwiched between the TPH and the platen roll during transfer. Also, TP
For the purpose of preventing fusion with H, a heat resistant layer and / or a slippery protective layer is provided on the surface opposite to the ink layer side, if necessary.

The surface layer of the recording medium is formed of a resin having an SP value close to the SP value of the ink receiving layer, particularly a resin having a SP value difference of 1 or less in order to obtain good transferability. Preferably. The thermal transfer recording medium used in combination with the heat-melt type thermal transfer recording receiving cloth of the present invention has a surface layer containing a thermoplastic resin having a melting point of 100 ° C. or higher, particularly preferably a nitrocellulose resin or a polyester resin as a main component. It is preferable to use a recording medium having the following properties, whereby a thermal fusion type thermal transfer recording excellent in transferability during thermal recording, washing resistance of printed images and heat resistance can be obtained.

The surface layer means the protective layer when the protective layer is provided on the ink layer, and the ink layer when the protective layer is not provided on the ink layer.

[0041]

EXAMPLES The present invention will be described in more detail below with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. In the following, "parts" or "%" are based on weight unless otherwise specified.

(Preparation of heat-melting type thermal transfer recording medium) A PET film having a thickness of 4.5 μm with a heat-resistant slip layer provided on one side was used as a support, and the support was provided on the side opposite to the heat-resistant slip layer side.
A release layer forming liquid a having the following composition was applied by wire bar coating so that the coating amount after drying was 0.5 g / m ^2, and dried at 80 ° C. for 15 seconds to form a release layer. Then, an ink layer-forming liquid a having the following composition was applied on the release layer by wire bar coating to give a coating amount of 1.2 g.
/ M ² was applied and dried to prepare a heat melting type thermal transfer recording medium a. Further, an ink layer forming liquid b having the following composition
A heat melting type thermal transfer recording medium b was produced in the same manner as the recording medium a except that the above was used.

Release layer forming liquid a Polyethylene wax 10 parts (Polywax 850 manufactured by Toyo Petrolite Co.) Butadiene rubber 10 parts (Toluene 5% solution Bon RI-1 manufactured by Konishi Co.) Ethylene-vinyl acetate resin 0.2 parts (Eva) Flex EV250 manufactured by Mitsui DuPont) Toluene 79.8 parts

Ink layer forming liquid a Carbon black 5 parts Nitrocellulose resin 10 parts Carnauba wax 4 parts Methyl ethyl ketone 81 parts

Ink layer forming liquid b Carbon black aqueous dispersion (solid content 20%) 5 parts Carnauba wax emulsion ((solid content 30%) 10 parts Water 60 parts Methanol 25 parts

Example 1 (Preparation of Receiving Fabric Label 1 for Thermal Melt Type Thermal Transfer Recording) As a support, polyester taffeta (190 pieces / inch ²⁾
75D), an ink receiving layer forming liquid a having the following composition was applied to the surface by wire bar coating so that the applied amount after drying was 27 g / m ² and dried, and then calendered to perform ink receiving. A layer was formed to obtain a receiving cloth. Then, a polyurethane adhesive film (Thermolite film 6501, manufactured by Daicel Chemical Industries, Ltd., 100 μm in thickness) pasted on a glassine paper having a basis weight of 60 g / m ^{2 and} having a surface coated with a silicone release agent, and the back surface of the receiving cloth. And the hot roll (120 ° C × 0.5 kg / cm
X 3 seconds) to adhere to each other to form a tackifying layer, thereby producing a receiving cloth label 1. Ink receiving layer forming liquid a Hollow particles (hollow ratio 91%, particle diameter 2 μm) 12 parts (solid content 40%, Matsumoto Microsphere R24, manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) Ionomer type polyester polyurethane resin water-based emulsion 50 parts (solid content 45%, Hydran APX101-H, manufactured by Dainippon Ink and Chemicals, Inc.) Water 38 parts

[0047] Example 2 (Preparation of heat-melting type thermal transfer recording receiving fabric label 2) polyester taffeta (190 present as a support / inch ² 7
5D) was subjected to heat treatment at 150 ° C. for 30 seconds, and a receiving cloth label 2 was prepared in the same manner as in Example 1.

Example 3 (Preparation of Receiving Fabric Label 3 for Thermal Melting Type Thermal Transfer Recording) A polyester type polyurethane resin aqueous emulsion (40%, Bondic type) was used in place of the ionomer type polyester polyurethane resin aqueous emulsion of the ink receiving layer forming liquid a. A receiving cloth label 3 was produced in the same manner as in Example 2 except that the ink receiving layer was formed using 1850N, manufactured by Dainippon Ink and Chemicals, Inc.

Example 4 (Preparation of Receiving Cloth Label 4 for Thermal Melt Type Thermal Transfer Recording) Polyester adhesive film (Thermolite film 2810, manufactured by Daicel Chemical Industries, Ltd., 100 μm thick) on the back surface of the receiving cloth.
Receiving cloth label 4 was produced in the same manner as in Example 2 except that m) was attached.

Example 5 (Preparation of Receiving Cloth Label 5 for Thermal Melting Type Thermal Transfer Recording) A polyamide-based tackifying layer forming liquid having the following composition was dissolved on the back side of the receiving cloth by heating at 50 ° C. Example 2 except that the composition was applied and dried to provide a thickness of 100 μm.
Receiving cloth label 5 was prepared in the same manner as in (1). Tackifying layer forming liquid a Copolymerized nylon resin 20 parts (750, manufactured by Daicel Hürz) Toluene 40 parts Methanol 40 parts

Example 6 (Preparation of Receiving Fabric Label 6 for Thermal Melting Type Thermal Transfer Recording) In the same manner as in Example 2 except that the ink receiving layer forming liquid b having the following composition was used in place of the ink receiving layer forming liquid a. Thus, the receiving cloth label 6 was produced. Ink receiving layer forming liquid b Hollow particles (hollow ratio 50%, particle size 1 μm) 17 parts (solid content 28%, Ropaque HP-91, manufactured by Rohm and Haas) Ionomer type polyester polyurethane resin water-based emulsion 50 parts (solid content 45%, Hydran APX101-H, manufactured by Dainippon Ink and Chemicals, Inc.) 33 parts of water

Example 7 (Preparation of Receiving Cloth Label 7 for Thermal Melting Type Thermal Transfer Recording) Nylon taffeta (190 pieces / inch ² 70) was used as a support.
A receiving cloth label 7 was obtained in the same manner as in Example 1 except that D) was used.

Comparative Example 1 (Preparation of Receiving Fabric Label 8 for Thermal Melting Type Thermal Transfer Recording) In the same manner as in Example 1 except that the ink receiving layer forming liquid a was replaced with the ink receiving layer forming liquid c having the following composition. A receiving cloth label 8 was produced. Ink receiving layer forming liquid c Styrene-acrylic resin particles (hollowness 0%, particle size 0.6 μm) 10 parts (solid content 47%, Almatex SPMM-47BF, manufactured by Mitsui Chemicals, Inc.) Ionomer type polyester polyurethane resin water-based emulsion 50 parts (solid content 45%, Hydran APX101-H, manufactured by Dainippon Ink and Chemicals) 40 parts water

Comparative Example 2 (Production of Receiving Fabric Label 9 for Thermal Melting Type Thermal Transfer Recording) In the same manner as in Example 1 except that the ink receiving layer forming liquid a was replaced with the ink receiving layer forming liquid d having the following composition. A receiving cloth label 9 was produced. Ink receptive layer forming liquid d Silicon dioxide (hollowness 0%, particle size 2 μm) 4.8 parts (Mizukasil P603, manufactured by Mizusawa Chemical Industry Co., Ltd.) Styrene-acrylic resin water-based emulsion 45 parts (solid content 50%, John Krill 60, Johnson Polymer Co., Ltd.) Water 50.2 parts

Comparative Example 3 (Preparation of Receiving Fabric Label 10 for Thermal Melting Type Thermal Transfer Recording) Comparative Example 3 except that the tackifying layer was replaced with a polyolefin adhesive film (Thermolite 9100, manufactured by Daicel Chemical Industries, Ltd., 30 μm). A receiving cloth label 10 was produced in the same manner as in 1.

(Evaluation of Receiving Cloth Label for Heat Melt Type Thermal Transfer Recording) The receiving cloth labels obtained in Examples 1 to 7 and Comparative Examples 1 to 3 were subjected to the following conditions using the above heat melting type thermal transfer recording medium a. Was printed and evaluated. Comparative Example 1
The receiving fabric label obtained in 1. was printed under the following conditions using the heat-melting type thermal transfer recording medium b and evaluated, and this was designated as "Comparative Example 4". The results obtained are shown in Table 1.

Printing conditions Thermal head Partial glaze thin film head (8 dots / mm) Platen pressure 150 g / cm Peeling angle of recording medium 30 ° Peeling torque 200 g Printing speed 100 mm / s

Evaluation item (1) Transferability (printability) Printing energy 18, 20, 22 mj under the above printing conditions.
/ Mm ² in performs printing, the image density of a solid printed portion was measured with Macbeth RD914, it was evaluated transferability at the transfer density.

(2) Washing resistance of printed image and adhesion-imparting layer The tackifying layer of the receiving cloth label obtained by printing under the above-mentioned printing conditions (printing energy 22 mj / mm ² ) and the cotton cloth are overlapped, It stuck with the iron and it was set as the sample for evaluation.

Washing resistance-1 (detergent washing resistance) The above evaluation sample was repeatedly subjected to a washing test three times in accordance with JIS L0844 No. A-5, and the residual image density after the test was measured and printed. The wash resistance of the image was evaluated. Further, the washing resistance (adhesiveness) of the adhesion-imparting layer was evaluated by the presence or absence of peeling of the bonded portion. Adhesiveness evaluation x: The entire adhesive surface peeled off Δ: The adhesive surface partially peeled off ○: The adhesive surface did not peel at all

Washing resistance-2 (chlorine bleaching resistance washing resistance ) Washing resistance-1 Washing resistance-1 evaluation was obtained by adding 3 g of a bleaching agent (Kitchen Hinter, manufactured by Kao) to the detergent solution used for evaluation. A washing test was carried out under the same conditions as above, and the residual image density after the test was measured to evaluate the washing resistance of the printed image. Also, the washing resistance (adhesiveness) of the adhesion-imparting layer depends on whether or not the bonded part is peeled off.
Was evaluated.

(3) Heat resistance The tackifying layer of the receiving cloth label obtained by printing under the above printing conditions (printing energy of 22 mj / mm ² ) and the cotton cloth are overlapped, and stuck by an iron at 180 ° C. for evaluation. As a sample, the heat resistance (heat shrinkage) of the receiving cloth was evaluated in a curled state after ironing. Heat resistance evaluation x: Large curl (large heat shrinkage) Δ: Slight curl (medium heat shrinkage) ○: No curl (no heat shrinkage)

[0063]

[Table 1]

[0064]

As described above, according to the present invention,
Since the ink receiving layer is formed into a sea-island shape with hollow particles containing gas inside as islands and the thermoplastic material as the sea, thermal melting with excellent transferability during thermal recording, washing resistance of recorded images, and heat resistance A receiving cloth for mold thermal transfer recording is obtained.

Claims (6)

[Claims] 1. A heat-melting type thermal transfer recording wherein a support made of a woven or non-woven fabric is provided with an ink receiving layer for receiving ink melted or softened by heat on one surface and a tackifying layer on the other surface. In the receiving cloth, the ink receiving layer is composed of hollow particles containing at least gas inside and a thermoplastic material, and is formed in a sea-island shape in which the hollow particles are islands and the thermoplastic material is the sea. A heat-fusion type thermal transfer recording receiving cloth characterized by the above. 2. The hollow particles have an average particle size of 0.1 to 1.
The heat-melt type thermal transfer recording receiving cloth according to claim 1, which has a hollowness of 0 μm and a hollowness of 75% or more. 3. The heat-melt type thermal transfer recording receiving cloth according to claim 1, wherein the thermoplastic material is an ionomer type polyester polyurethane resin. 4. The heat-melt type thermal transfer recording receiving cloth according to claim 1, wherein the support is a polyester resin woven or non-woven fabric heat-treated at a temperature of 100 ° C. or higher. 5. The heat-adhesion film made of polyamide resin or polyurethane resin as the tackifier layer.
5. The heat-melt type thermal transfer recording receiving cloth according to any one of 4 to 4. 6. The heat-melt type thermal transfer recording receiving cloth according to claim 1, which has a melting point of at least 100 ° C.
A recording method, wherein thermal printing is performed using the fusion type thermal transfer recording medium comprising the surface layer containing the above thermoplastic resin.