JPH10329415A - Ink jet recording transfer medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet recording transfer medium for forming an image of high quality level with excellent washing fastness for cloth by utilizing a general purpose ink jet printing method by forming a transfer image having high ink absorbency, high density and high clarity and forming the transfer image having excellent fastness on various material to be coated such as cloth or film. SOLUTION: In the ink jet recording transfer medium comprising a release layer and a transfer layer on a support, the transfer layer contains thermoplastic resin fine particles, thermoplastic resin binding agent, cationic resin and inorganic fine particles in such a manner that total adding amount of the cationic resin and inorganic fine particles is a range of 3 to 20% by weight to that of the cationic resin and the binding agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a transfer medium used for forming an image on a recording material such as a cloth or a film by transfer. More specifically, the present invention relates to a transfer medium for ink jet recording in which an ink jet recording method is used when forming an image on a transfer layer.

[0002]

2. Description of the Related Art Ink jet recording methods include various ink discharge methods, for example, an electrostatic suction method, a method of applying mechanical vibration or displacement to ink using a piezoelectric element, and heating and bubbling ink to reduce the pressure. Depending on the method used, small droplets of ink are generated and fly, and part or all of them are attached to a recording material such as paper to record images, characters, etc., and noise is generated. It is attracting attention as a recording method capable of performing high-speed printing and color printing. In recent years, with the widespread use of such inkjet printers capable of performing full-color printing, demands for performing color printing on various media using the inkjet printers have been increasing. In response to such demands, the printing technology using the transfer method is notable for any form on the media side, that is, it can perform image formation even on media that cannot be directly printed by a printer. Have been.

[0003] Some transfer media using an ink jet recording method used in a printing method by thermal transfer or the like have been proposed. For example, JP-A-8-2
JP-A-07426 discloses that the ink receiving layer is composed of a thermoplastic resin, a crystalline plasticizer, and a tackifier.
We have proposed an inkjet recording sheet that can be attached only by heating. Japanese Patent Application Laid-Open No. 8-207450 discloses that in a sheet comprising a support layer and a thermal transfer layer, the thermal transfer layer includes a granular thermoplastic polymer resin, porous inorganic fine particles, and a binder. A possible transfer medium is proposed. Further, also in U.S. Pat. No. 5,501,902, an ink jet transfer medium having a constitution in which a cationic resin, an ink viscosity modifier and the like are added in addition to the above constitution is proposed.

[0004] However, these prior arts have sufficient performance in forming an image on a transfer medium by ink-jet recording and transferring an image on the transfer medium, but after transferring the image to various recording materials. The performance with respect to the robustness of the image was not sufficient. Specifically, when the image transferred from the transfer medium to the cloth as described above is washed, the color material may flow out, or the surface of the cloth on which the transferred image is formed may be fluffed. A decrease in concentration had occurred.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to form a transfer image having high ink absorbency, high density and high clarity, and various recording materials such as cloth and film. Another object of the present invention is to provide a transfer medium for ink jet recording capable of forming a transfer image having excellent robustness. Further, an object of the present invention is to easily form a high-quality image excellent in fastness such as washing fastness on various recording materials such as fabrics and films using a general-purpose inkjet printing method. To provide a transfer medium for inkjet recording.

[0006]

The above object is achieved by the present invention described below. That is, the present invention relates to a transfer medium for ink jet recording in which a release layer and a transfer layer are provided on a support, wherein the transfer layer is formed of a thermoplastic resin fine particle, a thermoplastic resin binder, a cationic resin, and an inorganic fine particle. Wherein the total amount of the cationic resin and the inorganic fine particles is in the range of 3% to 20% by weight based on the total of the thermoplastic resin fine particles and the thermoplastic resin binder. A transfer medium for inkjet recording, characterized in that:

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. The transfer medium for ink jet recording of the present invention comprises a release layer provided on a support, and a transfer layer formed on the release layer. In this configuration, the transfer layer requires the following three requirements. First, a function of satisfactorily absorbing ink for ink jet recording to form a high-quality image and satisfactorily holding the formed image. Second, a function of adhering to a material to be transferred (recording material) such as a cloth or a film and enabling the held image to be transferred onto the material to be transferred in good condition. Third, the color material in the transfer layer is firmly fixed in the layer after being transferred onto the material to be transferred such as a cloth or a film,
A function for preventing image deterioration that may occur when a recording material, such as a cloth, is washed, or when a recording material on which an image is formed is wet with water or sweat.

According to the present invention, an ink jet recording transfer medium having a transfer layer satisfying all the above functions can be obtained. That is, in the present invention, a thermoplastic resin fine particle, a thermoplastic resin binder, a cationic resin and inorganic fine particles are used as a material constituting the transfer layer, and the content of the cationic resin and the inorganic fine particles is specified. By doing so, it is possible to achieve all of the above-mentioned required performance. Hereinafter, the role (function) of each material will be specifically described.

The thermoplastic resin fine particles used in the present invention are fine particles comprising a water-insoluble thermoplastic resin. More preferably, porous thermoplastic resin fine particles are used. If such a thermoplastic resin fine particle is contained in the transfer layer, in a state before forming a transfer image, these thermoplastic resin fine particles are not formed into a film, and the shape of the fine particle remains as it is. Since the transfer layer is a porous layer because it is present in the transfer layer in a state, when the ink is supplied to the transfer layer by the inkjet recording method, the ink is well absorbed and retained in the gaps between the fine particles. be able to. As will be described later, in this case, if the porous thermoplastic resin fine particles are used, the ink is absorbed in the voids of the fine particles, so that the ink absorbency of the transfer layer can be further improved.

On the other hand, when an image is adhered to a material to be transferred and the image is transferred by, for example, heating and pressing from the support side of the material to be transferred, the thermoplastic resin fine particles in the transfer layer are made of thermoplastic resin. Since the particles are melted and transferred together with the binder, and these fine particles are also formed into a film, the coloring material can be fixed in a good condition on a material to be transferred such as a cloth or a film. Also, in this case, in the transfer layer before melting, the thermoplastic resin is present in a fine particle state, so that, for example, when transferring to a fabric, these fine particles entered between the fibers and surrounded the fibers. Since it is melted in a state and then sticks,
Even if the fabric expands and contracts, a clear transferred image can be obtained without any visible color of the underlying fiber.

However, when the transfer layer is formed of only the two types of materials described above, the transfer layer excessively penetrates into the cloth and the color material sinks, resulting in a problem that the image density decreases. there were. Also, when washing with the same factors,
There is also a problem that the fabric surface is fluffed and the image density is reduced. The inventors of the present invention have conducted intensive studies on these problems, and as a result, if inorganic particles are added to the transfer layer, the phenomenon that the transfer layer excessively penetrates into the fabric can be effectively prevented, and the above-mentioned problems have been improved. I learned that I can do it. That is,
By adding inorganic particles having no melting property to heat into the transfer layer, it is possible to prevent the thermoplastic resin forming the transfer layer from excessively penetrating into the cloth at the time of transfer. A film is formed on the surface of the substrate to obtain a clear image with high density. Further, in this way, since the fibers are bonded on the surface of the fabric, the fabric is not fluffed even by washing and has high robustness.

Further, in the present invention, by adding a cationic resin to the material for forming the transfer layer, it is possible to obtain a transfer image having higher robustness. A coloring material generally used in an ink jet printer is a dye, and the coloring material is taken in together when the fine particles of the thermoplastic resin and the binder are melted by heat at the time of transfer, and is used for fabrics and films. And so on. However, the film thus formed may not be completely uniform, and in such a case, for example, when the fabric is immersed in water during washing or the like, the dye may exude. . On the other hand, if a cationic resin is added to the transfer layer, it reacts with the dye and becomes insoluble,
It is possible to prevent the elution of the dye.

However, in the present invention, the total addition amount of the inorganic particles having the above-described functions and the cationic resin in the transfer layer is reduced to the total amount of the thermoplastic resin fine particles and the thermoplastic binder. On the other hand, it is necessary to be in the range of 3% to 20%. As mentioned above, the inorganic particles do not melt on heat and do not have adhesiveness to fabric. In addition, cationic resins generally have a large amount of water-soluble resins, so they do not have adhesiveness to fabrics. In addition, if added more than necessary, they are eluted in water when washed, and on the contrary, they are robust. Can be reduced. In other words, materials having no adhesiveness to these cloths can exert their effects only in a state where they are incorporated in a material such as a thermoplastic resin having adhesiveness. Inhibits the adhesion to the fabric,
Rather, it can be a factor that adversely affects the robustness of the transferred image. For this reason, the addition of the inorganic particles having no adhesiveness to the fabric and the cationic resin to the transfer layer is 3% to 20% based on the total amount of the adhesive thermoplastic resin fine particles and the binder. It is thought that it is necessary to limit to%.

Further, the transfer medium for ink jet recording of the present invention has a release layer together with the transfer layer having the above-described structure. Due to the presence of the release layer, the transfer layer having the above excellent characteristics can be efficiently used. It is possible to easily and easily transfer the image to a recording material such as a cloth or a film. For example, when the support is peeled and removed after transfer by heating and pressing on the fabric, it is possible to prevent the transfer layer from peeling off from the fabric or prevent a part of the transfer layer from remaining on the support and damaging the image. Is done.

Further, as another embodiment of the present invention, a layer composed of a uniform film (hereinafter, referred to as a uniform film layer) is provided between the transfer layer and the release layer described above, and the transfer layer is formed of two layers. It may have a layer configuration. The advantages of providing this uniform coating layer include the following two points. First, the formation of the transfer layer on the release layer becomes easier. In the ink jet recording transfer medium of the present invention, as described above, it is preferable to provide a porous transfer layer in order to improve the ink absorbency, but a layer having low adhesion such as a release layer If a porous layer is provided on top, the adhesion between the layers is poor,
The transfer layer may peel off during handling. Therefore, if the transfer layer has a two-layer structure and a uniform coating layer that is not a porous layer made of a different material from the transfer layer is provided on the release layer side of the transfer layer, the adhesion between the layers is improved. And such problems are less likely to occur.

Second, if a uniform coating layer is provided between the above-mentioned transfer layer and the release layer, the washing fastness transferred onto a cloth or the like can be further improved. That is, when the transfer layer has a two-layer structure, the uniform coating layer becomes the outermost layer after the transfer and covers the image surface, so that the color material adheres to the fabric in a state where the color material is more hidden in the transfer layer. Is considered to be more robust. Further, as the material for forming the uniform coating layer, it is preferable to use the same type of thermoplastic resin used for the material for forming the transfer layer described above. That is, by using the same material for forming these two layers, the adhesion between the two layers can be increased, the robustness can be increased, and the difference in the refractive index between the two layers can be reduced. The transfer layer after the transfer becomes transparent, and a clear image can be obtained.

Next, the materials used in the transfer medium for ink jet recording according to the present invention, each having the above-mentioned role, will be described in detail. First, as the thermoplastic resin fine particle material which is a material for forming the transfer layer, any fine particles made of a water-insoluble thermoplastic resin can be used. Examples of such a thermoplastic resin include polyethylene, polypropylene, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, poly (meth) acrylic acid, poly (meth) acrylate, polyacrylic acid derivatives, and polyacrylic acid. Amides, polyethers, polyesters, polycarbonates, cellulosic resins, polyacrylonitriles, polyimides, polyamides, polyvinyl chloride, polyvinylidene chloride, polystyrene, thiocol, polysulfone, urethane, styrene, copolymers of these resins, etc. No. Among them, polyethylene, polypropylene,
Poly (meth) acrylic acid, poly (meth) acrylic acid ester, polyvinyl acetate, polyvinyl chloride, urethane, polyamide, and copolymers thereof are more preferably used.

The particle diameter of the fine particles of the thermoplastic resin used in the present invention is from 0.05 in terms of ink absorbency and image clarity.
It is preferably in the range of μm to 100 μm, more preferably 0.2 to 50 μm, even more preferably 5 to 2 μm.
Those having a range of 0 μm are preferred. Particle size 0.05μm
When resin particles smaller than the above are used, the gap between the particles becomes too small when the transfer layer is formed, so that sufficient ink absorbency cannot be obtained. On the other hand, if the particles are too small, the smoothness of the surface of the transfer layer is increased and it is difficult to penetrate between the fibers of the fabric, so that the transferred image is easily formed as a uniform continuous film on the surface of the fabric, and the transferred image is easily peeled. When the fabric is stretched or stretched, the transfer layer is cracked and the underlying fibers are visible, and it is difficult to obtain a good transfer image. On the other hand, when thermoplastic resin fine particles having a particle size larger than 100 μm are used, the resolution of the image is lowered and a clear image is hardly obtained.

As the fine particles of the thermoplastic resin made of the above-mentioned materials and the like used in the present invention, porous fine particles are preferably used. In the present invention, if porous thermoplastic resin particles are used in the transfer layer, the ink absorbency of the transfer layer can be further improved, so that it is possible to absorb more ink with a thin layer thickness, A thin transfer layer capable of forming a clear image is obtained. Further, reducing the thickness of the transfer layer in this manner not only facilitates the transfer of the image, but also, when transferred to a cloth or the like, softens the texture of the image after the transfer. can get. In the present invention, it is particularly preferable to use thermoplastic resin fine particles made of a copolymer of nylon 6 and nylon 12 as a material for forming the transfer layer. When the fine particles are used, coloring of the dye becomes good, and a clearer image can be obtained.

The fine particles of the thermoplastic resin used in the present invention are prepared by forming an image with a general-purpose ink-jet printer and then sufficiently melting with a household iron or the like so that the image can be easily transferred at home. It is preferable to use a material that can be transferred onto. From this point, the melting point of the thermoplastic resin particles used in the present invention is 7
It is preferably in the range of 0 ° C to 200 ° C, more preferably in the range of 80 ° C to 180 ° C, and still more preferably in the range of 10 ° C to 180 ° C.
Those having a range of 0 ° C to 150 ° C are suitable. That is, 70
If the melting point is lower than ℃, depending on the conditions during distribution or storage, the fine particles may be formed into a continuous film. or,
Since the drying temperature after coating must be lower than the melting point of the fine particles, it is preferable to use a resin having a temperature of 70 ° C. or higher from the viewpoint of production efficiency. On the other hand, if the melting point is higher than 200 ° C,
Since high energy is required for transfer, it is difficult to easily form a transfer image on a recording material such as a cloth or a film, which is one of the objects of the present invention.

Further, in the present invention, it is preferable to use thermoplastic resin fine particles having a low thermal melt viscosity in consideration of the adhesion of the transfer layer to the cloth. When a resin having a high heat-melt viscosity is used, the adhesion between the transfer layer and the fabric deteriorates, and the formed transfer layer may be easily peeled off. In contrast,
When a material having a low heat-melt viscosity is used, the transfer layer can easily enter between the fibers of the fabric, and even if the fabric expands and contracts, the color of the underlying fiber is not seen, and a good transfer image can be obtained.
Further, in the transfer layer, if a plasticizer of thermoplastic resin particles, or a plasticizer of a thermoplastic resin binder is added, at the time of transfer,
That is, since the melt viscosity of the transfer layer can be reduced at the time of heating, the adhesion to the fabric can be further improved, and the transferability can be improved.

Further, in the present invention, in order to minimize the texture of the cloth or the like after the transfer image is formed,
It is preferable to use a film-forming material capable of obtaining a film having high flexibility after melting. In this sense, it is preferable to add a plasticizer for the fine particles of the thermoplastic resin or a plasticizer for the binder of the thermoplastic resin to the transfer layer of the transfer medium for ink jet recording of the present invention. This makes it possible to impart strength and flexibility to the transferred image, and to form a transferred image with excellent texture on a recording material such as a cloth or a film.

Next, a thermoplastic resin binder used as a material for forming a transfer layer together with the above-described thermoplastic resin fine particles will be described. The binder is used for forming a transfer layer by binding the above-mentioned thermoplastic resin particles to each other to form a coating film, and further, for the purpose of bonding the transfer layer on which an image is formed to a cloth at the time of transfer. Added. As in the case of the thermoplastic resin fine particles described above, a conventionally known water-insoluble thermoplastic resin can be used as the thermoplastic resin binder.
Specifically, those listed above can be used as the material for the thermoplastic resin fine particles. In the present invention,
The ratio of the thermoplastic resin particles forming the transfer layer to the thermoplastic resin binder is preferably in the range of 1/2 to 50/1, more preferably in the range of 1/2 to 20/1,
More preferably, it is in the range of 1/2 to 15/1. That is,
If the proportion of the fine particles of the thermoplastic resin is too large, the adhesion between the fine particles or between the fine particles and the release layer becomes insufficient, so that a transfer layer having sufficient strength cannot be formed before the transfer. On the other hand, if the proportion of the thermoplastic resin particles is too small,
It is difficult to obtain a transfer layer capable of forming an image excellent in ink absorption and image clarity.

Next, a cationic resin material which is added to the above-mentioned fine particles of the thermoplastic resin and the binder and used for the transfer layer will be described. As described above, the cationic resin is
It is added for the purpose of insolubilizing the dye in the ink in water. As the cationic resin, for example, polyvinyl alcohol, hydroxyethyl cellulose, cationized modified products of resins such as polyvinylpyrrolidone, allylamine, diallylamine, allyl sulfone, dimethylallyl sulfone,
Amine monomers such as diallyldimethylammonium chloride, dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate, methylethylaminoethyl (meth) acrylate, dimethylaminostyrene, diethylammonostyrene, methylethylaminostyrene, N- Polymers and copolymers of acrylic monomers having a primary or secondary tertiary amine or quaternary ammonium base, such as methylacrylamide, N-dimethylacrylamide, N, N-dimethylaminoethyl methacrylamide, and quaternized compounds thereof And a resin having a primary or secondary tertiary amine or quaternary ammonium base in the main chain.

Further, the inorganic particles used in the transfer layer together with the above-mentioned cationic resin will be described. The inorganic particles used in the present invention may be any porous and ink-absorbing particles. Specifically, silica, aluminum silicate, magnesium silicate, hydrotalcite, calcium carbonate, titanium oxide, clay , Talc, (basic)
Magnesium carbonate and the like. Among these, it is preferable to use a material having a high dyeing property, since the dye is fixed on the surface of the fabric. In this case, if a material having a higher porosity is used, the ink absorbency of the transfer layer is also increased, and a clearer image can be obtained. The particle size of the inorganic particles used in the present invention is preferably as close as possible to the particle size of the thermoplastic resin fine particles described above. This is because the addition of particles having different particle sizes causes the smaller particles to be filled between the larger particles, resulting in a decrease in the porosity in the transfer layer.

As described above, in the present invention,
The total addition amount of the inorganic particles and the cationic resin in the transfer layer as described above needs to be in the range of 3% to 20% with respect to the total amount of the thermoplastic resin fine particles and the thermoplastic binder. There is. This is considered for the following reason. The inorganic particles do not melt with heat and have no adhesiveness to fabric. Further, the cationic resin does not have adhesiveness to the fabric, and generally contains a large amount of a water-soluble resin. For this reason, if added more than necessary, it is eluted in water when washed, and on the contrary, it also causes a decrease in fastness. Therefore, materials having no adhesiveness to these fabrics can exert their effects only in a state where they are incorporated in a material such as a thermoplastic resin having adhesiveness, and these materials are excessively added. This impairs the adhesiveness of the transfer layer to the fabric, and adversely affects the robustness of the transferred image.

The ratio between the inorganic particles and the cationic resin is as follows:
It is preferably in the range of 1/1 to 1/20, more preferably in the range of 1/2 to 1/10, and still more preferably,
It is good to set it in the range of 1/2 to 1/5. That is, if more inorganic particles are added than this ratio, the transferability is adversely affected, and the effect of the cationic resin is weakened, and the rigidity is reduced. Conversely, if the ratio of the inorganic particles is small, it is impossible to control the penetration of the transfer layer into the fabric, which also causes a reduction in the robustness.

The thickness of the transfer layer formed by the above-mentioned material is preferably 10 to 150 μm, more preferably 30 to 120 μm, and further preferably 40 to 10 μm.
The range is 0 μm. If the thickness is too large, a transferred image having flexibility cannot be obtained when the image is transferred to a transfer material such as a cloth. On the other hand, if the thickness is too thin, the transferred image formed is inferior in image quality and inferior in robustness, which is not preferable.

In the transfer layer of the thermal transfer medium for ink jet recording of the present invention, for the purpose of improving the permeability of the ink,
Further, a surfactant may be contained. That is, when a surfactant is added to the transfer layer, the wettability of the particle surface is improved, and the permeability of the aqueous ink is increased. As the surfactant used in the present invention, nonionic surfactants generally used can be used, and more specifically, ether type, ester type, ether / ester type,
Nitrogen-containing and fluorine-based surfactants can be used.

As another embodiment of the transfer layer of the transfer medium for ink jet recording of the present invention, a case where the above-described transfer layer has a two-layer structure and a uniform coating layer is provided between the transfer layer and the release layer will be described below. explain. By adopting such an aspect, the adhesion between the release layer and the transfer layer can be increased, so that the problem that the transfer layer is peeled off from the release layer when the paper is conveyed in the printer or the like is more problematic. Be improved. Further, even after the transfer, the uniform coating layer is provided on the outermost surface, so that the color material is concealed without being exposed, and further, the transfer layer can be fixed to the fabric satisfactorily. Property is obtained. As the material for forming the uniform coating layer, the same material as the material used as the thermoplastic resin binder may be used. The thickness of the uniform coating layer is preferably smaller than that of the transfer layer, and is preferably about 1 to 50 μm.

Further, additives may be added to the transfer layer of the transfer medium for ink jet recording of the present invention in addition to the above-mentioned components. In particular, the addition of thermoplastic resin fine particles or thermoplastic resin binder plasticizer is effective in improving transferability. The addition of the plasticizer lowers the melt viscosity of the transfer layer at the time of transfer, that is, at the time of heating, so that the adhesion to the cloth can be further improved and the transferability is improved.
Further, the flexibility and strength of the transferred image can be improved.
Any conventionally known plasticizer can be used as the plasticizer at this time. Specifically, for example, phthalate esters such as diethyl phthalate, dioctyl phthalate, dimethyl phthalate, dibutyl phthalate, phosphate esters such as tributyl phosphate and triphenyl phosphate, octyl adipate, adipic acid such as isononyl adipate Ester, dibutyl sebacate, sebacic acid ester such as dioctyl sebacate, acetyl tributyl citrate, acetyl triethyl citrate, dibutyl maleate, diethylhexyl maleate, dibutyl fumarate, trimellitic acid plasticizer, polyester plasticizer, Epoxy plasticizer, stearin plasticizer, paraffin chloride, toluenesulfonamide and its derivatives, p-oxybenzoic acid
2-ethylhexyl ester and the like.

The release layer that constitutes the transfer medium for ink jet recording of the present invention together with the transfer layer having the above-described structure includes:
When transferring the transfer layer to a recording material such as a cloth or a film, the transfer layer has an effect of increasing the releasability between the transfer layer and the support. As a material for forming the release layer, as a heat-fusible material, for example, waxes such as carnauba wax, paraffin wax, microcrystalline wax, caster wax, stearic acid, palmitic acid, lauric acid, aluminum stearate, and stearic acid Higher fatty acids such as lead, barium stearate, zinc stearate, zinc balmitate, methylhydroxystearate, glycerol monohydroxystearate, glycerol monohydroxystearate or derivatives thereof such as metal salts and esters, polyamide resins, petroleum-based Resin, rosin derivative,
Coumarone-indene resin, terpene resin, novolak resin, styrene resin, olefin resin such as polyethylene, polypropylene, polybutene, oxidized polyolefin, and vinyl ether resin are exemplified. In addition, a silicone resin, a fluorosilicone resin, a fluoroolefin vinyl ether terpolymer, a perfluoroepoxy resin, a thermosetting acrylic resin having a perfluoroalkyl group in a side chain, a vinylidene fluoride-based curing resin, and the like are also used. .

In the transfer medium for ink jet recording of the present invention, a release layer made of the above-mentioned material is formed on a support, and the support used in the present invention can be transported by a printer. Any support can be used as long as it has the necessary heat resistance to thermal transfer. Specifically, polyester, diacetate, triacetate, acrylic polymer, polycarbonate, polyvinyl chloride, polyimide, cellophane, film such as celluloid,
Examples of the paper include a cloth made of various fibers and a nonwoven fabric.
The transfer medium for ink jet recording of the present invention can be applied to a flexible support such as a cloth or a nonwoven fabric, or a transfer medium in the form of a transfer object even if the transfer object is a film having a curved surface. Since the shape of can be adjusted as appropriate,
Good transfer to shapes other than these flat surfaces is possible.

As a method for forming a release layer and a transfer layer on these supports, a suitable release layer and transfer layer material described above is dissolved or dispersed in a suitable solvent to form a coating. Examples thereof include a method of preparing a liquid and applying the coating liquid on a support, a method of forming a film from these materials and laminating the film on the support, and a method of extrusion molding. As a coating method, a roll coater method, a blade coater method,
There are an air knife coater method, a gate roll coater method, a bar coater method, a size press method, a shim sizer method, a spray coat method, a gravure coat method, a curtain coater method and the like.

The transfer medium prepared by the above method is
Forming an image on the transfer layer by an inkjet recording method,
Transfer the formed image to the fabric by means such as heating,
Used for forming an image on a fabric. As the inkjet printer, a commercially available general-purpose printer can be used as it is. Further, the coloring material to be used is not particularly limited, and a conventionally known anionic coloring material can be used, and it is not particularly necessary to change the coloring material according to the material of the cloth. The material constituting the fabric used in the present invention is not particularly limited, and cotton, hemp, silk, wool, rayon, polyester, nylon, acrylic, acetate, triacetate, polyurethane and the like, and fibers of these blends are used. Can be used. In addition, this cloth is woven, knitted,
Any form such as a nonwoven fabric can be used.

[0036]

Next, the present invention will be described specifically with reference to examples and comparative examples. Table 1 below shows details of materials used in Examples and Comparative Examples. First, a to j of these
Were used and mixed well as shown in Table 2 to form coating liquids A to K.

Table 1: Materials for forming transfer media used in Examples

Table 2: Composition of coating liquid

This coating solution was coated under the conditions shown in Table 3 to obtain transfer media of Examples 1 to 8 and Comparative Examples 1 and 2.
The thickness in the table is a dry film thickness. The coating was performed using a bar coater method. In Example 8, after a uniform film having a thickness of 20 μm was formed on the support using the coating liquid K, a coating liquid J was applied thereon to form a 50 μm
Was formed.

Table 3: Coating conditions

An ink jet color printer BJC-60 was applied to the transfer media of Examples and Comparative Examples prepared as described above.
Using 0J (manufactured by Canon Inc.), printing was performed in a back-printed film mode. After printing, 100% cotton T
The transfer layer side of the transfer medium printed on the shirt base was laminated so as to match the T-shirt base side, and transfer was performed at about 190 ° C. from the support side using a hot press machine. The transfer image thus created was evaluated for the following items, and the evaluation results are shown in Table 3.

"Evaluation Items" (1) Image Quality Two-color patches were printed side by side and evaluated by bleeding at the boundaries. The image used was one in which yellow, cyan, blue and red with 100% duty were adjacent to all pixels. Then, the transferred image obtained on the T-shirt was evaluated by visually observing the bleeding at the boundary of each color. The evaluation criteria were as follows: Table 4 shows the evaluation results. A: No bleeding was observed at the boundary between all colors. B: Bleeding occurred only at the boundary between secondary colors (between blue and red). C: Border bleeding also occurred between the secondary color and the primary color (between blue and cyan). D: There was bleeding at any boundary.

(2) Washing fastness The T-shirt having the transferred image prepared by the above method was put into a washing machine, washed with warm water of 30 ° C. for 2 minutes, air-dried, and the transferred image was visually observed. The washing fastness was evaluated. Table 4 shows the evaluation results. The image is 10 pixels per pixel
Black, cyan, magenta, and yellow patches (15 mm × 15 mm) with 0% duty were used. A: Excellent B: Good C: Somewhat good D: Somewhat bad E: Bad

Table 4: Evaluation results

[0045]

As described above, according to the present invention,
It is possible to form a transfer image with high ink absorption, high density and high clarity, and it is possible to form a transfer image with excellent robustness on various recording materials such as fabrics and films. And a transfer medium for inkjet recording.
Also, according to the present invention, various recording materials such as fabrics and films can be easily used by using a general-purpose inkjet printer,
Provided is a transfer medium for ink jet recording capable of forming a high-quality image excellent in fastness such as washing fastness.

Claims (7)

[Claims] 1. In a transfer medium for ink jet recording having a release layer and a transfer layer provided on a support, said transfer layer comprises a thermoplastic resin fine particle, a thermoplastic resin binder, a cationic resin and inorganic fine particles. The total amount of the cationic resin and the inorganic fine particles is 3% by weight with respect to the total amount of the thermoplastic resin fine particles and the thermoplastic resin binder.
% To 20%. 2. The transfer medium for ink-jet recording according to claim 1, wherein the thermoplastic resin fine particles are porous. 3. The transfer medium for ink-jet recording according to claim 1, wherein the thermoplastic resin fine particles are a copolymer of nylon 6 and nylon 12. 4. The transfer layer further comprises a thermoplastic resin fine particle or a plasticizer of a thermoplastic resin fine particle binder.
The transfer medium for inkjet recording according to any one of claims 1 to 3. 5. The transfer medium for inkjet recording according to claim 1, wherein the transfer layer further contains a surfactant. 6. The ink jet recording according to claim 1, wherein the transfer layer has a two-layer structure, and has a layer formed of a material different from the transfer layer formed of a uniform film on the release layer side of the transfer layer. Transfer media. 7. The transfer medium for ink jet recording according to claim 6, wherein the same thermoplastic resin is contained in the transfer layer and the uniform coating layer.