JP2551415B2 - Transfer method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transfer sheet and a transfer method using the transfer sheet, and more specifically, to an image formed by a heat transferable dye (sublimable dye) on an arbitrary surface. The present invention provides a transfer sheet that can be transferred as a positive image to a transfer article, and a transfer method using the transfer sheet.

(Prior Art) Conventionally, a method of heat transfer (sublimation heat transfer) of a cloth with a heat transferable dye has been performed for a long time, and this method comprises an inversion pattern layer of a dye carrying the heat transferable dye on a heat transfer sheet substrate. It is a method in which a positive image is formed on a cloth by forming it, heating it over the cloth, and transferring the dye to the cloth. Utilizing this technology, coupled with the recent development of precision thermal printers and other image technologies, there is a method of forming a precise image on a plastic film from a thermal transfer sheet having a heat transferable dye that is as good as a photograph. Various proposals have been made.

According to this recent method, for example, a camera, an image, a television image or a graphic image of a personal computer can be easily made into a hard copy on the surface of a transfer material such as paper having a polyester layer. It has reached a level where it can fully compete with technology and precision printing technology.

(Problems to be Solved by the Invention) Although the thermal transfer technique as described above has an advantage that an arbitrary image can be easily formed, the transferred article is made into a material that can be dyed with a heat transferable dye such as polyester. On the other hand, the transferred article is limited in shape to a sheet-like material such as a film or a sheet, and for example, an image is formed on wood, metal, glass, ceramics or the like. In addition, even in the case of plastics such as polyester, the three-dimensional molded article other than the sheet-shaped article even if the image forming surface thereof is a curved surface, has an uneven shape, or is flat. Has a problem that it is difficult to form an image.

In particular, as the fields of use of various cards such as cash cards have expanded in recent years, it is necessary to add images and symbols to these cards to give them various functions and decorations. However, it is difficult to apply an image to these cards by the above-mentioned thermal transfer method because they are inflexible or have irregularities such as letters and symbols.

As a method of solving such a drawback, there is a method of sticking a picture sticker having a desired image on a desired place of a desired article, but since the sealing material is relatively thick in this method,
There are drawbacks that the sticking portion is projected, the seal and the article to be decorated do not have a sense of unity, and are easily peeled off.

As a method that does not cause such a defect, there is a method using a thermal transfer method such as a hot stamp method.
This method has a drawback that a heating means is always required at the time of image transfer, and there is a problem that thermal transfer is difficult on a complicated uneven surface as in the above case.

Therefore, there is a demand for the development of a technique in which a desired image can be easily applied to the surface of an article made of an arbitrary material and having an arbitrary shape and an arbitrary surface shape, and the image and the transferred article are integrated. Has been done.

(Means for Solving Problems) That is, according to the present invention, the image receiving layer of the transfer sheet comprising an image receiving layer releasably provided on one surface of the sheet-shaped substrate is positive when viewed from the image receiving layer side. A transfer method comprising forming an image, transferring the image-receiving layer having the image formed thereon to an intermediate transfer base material, and then transferring the transferred image-receiving layer to any transfer target article.

The present invention will now be described in more detail with reference to the accompanying drawings, which schematically show embodiments of the present invention.

FIG. 1 is a diagram schematically showing a basic aspect of the transfer sheet 10 of the present invention, and FIGS. 2 to 3 are diagrams showing a preferred embodiment of the transfer sheet 10 of the present invention. 7 to 7 are diagrams schematically showing the transfer method of the present invention.

As shown in FIG. 1, the transfer sheet 10 of the present invention has a basic structure in which an image-receiving layer 2 which is peelable is provided on one surface of an arbitrary sheet-shaped substrate 1, and the image-receiving layer 2 is formed from the image-receiving layer side. It is characterized in that the reverse image 3 is provided.

By setting the transfer sheet 10 of the present invention to such a basic structure, a positive image can be easily transferred from the transfer sheet to any transfer target article by a transfer method, and the above-mentioned drawbacks of the prior art are basically caused. It will be solved.

That is, the image receiving layer 2 in the above is limited to a material which can be dyed with a heat transferable dye, but once the reversal image 3 is formed with these dyes, it can be glass, metal, wood, or heat transfer. It is possible to freely transfer a positive image even with a plastics material that is difficult to dye depending on the functional dye.

Further, since the image receiving layer 2 having the image 3 and transferred from the sheet-shaped substrate 1 is very thin and has sufficient flexibility, even if the surface shape of the transferred article is a curved surface or an uneven surface, Since it is possible to sufficiently follow the surface shape,
The transfer is not limited by the surface shape of the transferred article.

Further, similarly, since the image receiving layer 2 having the image 3 is very thin, it can be easily integrated with the transferred article unlike a conventional sticker, and the transfer portion does not rise, so that a sticker like a sticker is attached. It does not give a feeling of wearing.

In the transfer sheet 10 described above, the image receiving layer 2 alone makes these layers thin, so that various handling is difficult, and the presence of the sheet-shaped substrate 1 is necessary. Further, since the image receiving layer 2 provided on the sheet-shaped substrate 1 is required to be easily peelable at the time of transfer, the image receiving layer 2 and the sheet-shaped substrate 1 should not be strongly adhered to each other and easily peeled off. It is preferable to provide the weak adhesive layer 4 so that it is possible (FIG. 2). Therefore, the term "weakly sticky" in the present invention means that the image receiving layer 2 or the sheet-shaped substrate 1 having the image 3 can be easily peeled from the other side without being broken by fingers or other means. . However, in the material relationship between the image receiving layer 2 and the sheet-shaped substrate 1, if the peeling is easy as described above, the weak adhesive layer is not always necessary.

Although not shown, a release layer may be provided on the surface of the image receiving layer 2 of the transfer sheet 10 of the present invention. The release layer is
This is for preventing the heat transfer sheet and the image receiving layer 2 from sticking to each other when heat is transferred from the heat transfer sheet 20 as shown in FIG. 5 to form an image 3'on the image receiving layer 2. It is not necessary when such adhesion does not occur or when such a release layer 22 is provided on the surface of the transfer sheet.

In the example shown in FIG. 3, the protective film layer 5 is further provided between the image receiving layer 2 and the weak adhesive layer 4 in the example shown in FIG. The protective film layer 5 transfers the image of the image receiving layer 2 having the reversal image 3 when the surface (image forming surface) of the image receiving layer 2 is transferred to the transferred article (see FIG. 4). Is to prevent deterioration of, for example, wear resistance,
It is formed from a material having various excellent physical properties such as light resistance, weather resistance, and chemical resistance. By providing such a protective film layer 5, it is possible to improve various toughness of the image after transferred to the transferred article.

In the third example shown above, another peeling layer (not shown) is provided between the protective film layer 5 and the weak adhesive layer 4 in order to make the protective film layer 5 and the weak adhesive layer 4 peelable. May be. It is not necessary when the interface between the protective film layer 5 and the weak adhesive layer 4 has sufficient peelability.

The transfer sheet 10 of the present invention as shown in the above first to third illustrations,
Although it will be described in detail later, it is basically obtained by the following method.

(1) A method in which a reverse image is directly transferred by thermal transfer using an ordinary thermal transfer sheet having a heat transferable dye layer on a transfer sheet having the same structure as that shown in FIGS. 1 to 3 except that an image is formed, Or (2) In the above (1), a positive image is formed, and the image-receiving layer having the formed image is once transferred to an intermediate transfer substrate.
A method for producing a transfer sheet having a reverse image as in the above.

Next, the transfer method of the present invention will be described. The transfer method of the present invention is mainly characterized in that the transfer sheet 10 of the present invention as described above is used in any process.

As a basic mode, a method illustrated in FIGS. 4 to 7 will be described.

The example shown in FIG. 4 uses the transfer sheet 10 shown in FIG. 3, and as shown in FIG. 4, the image forming surface of the transfer sheet 10 is opposed to the transfer surface of the transfer-target article 30 so as to be overlapped, pressure-bonded, and In this example, the sheet-shaped substrate 1 of the transfer sheet 10 is peeled off together with the weak adhesive layer 4. At this time, if necessary, an adhesive layer or an adhesive layer may be provided on one or both of the image receiving layer 2 and the transferred article 30, but since the image receiving layer 2 of the transfer sheet 10 is heat-fusible It is also possible to perform heat fusion without using the above.

The example shown in FIGS. 5 to 7 is a method in which transfer is performed through the intermediate transfer sheet 10 'once. First, as shown in FIG. 5, the thermal transfer sheet 20 having the heat transferable dye layer 21 is first transferred to the transfer sheet 10'.
(In this state, the image 3'is not formed yet, which corresponds to the transfer target sheet), the dye layer 21 (release layer 22) is overlaid so as to face the image receiving layer 2'of the transfer sheet 10 ', Preferably, a desired positive image 3'is formed on the image receiving layer 2'by applying thermal energy (arrow) from the thermal transfer sheet side in accordance with the image signal from the thermal head. In this case, the transfer sheet 10 'is preferably provided with a weak adhesive layer 4'between the image receiving layer 2'and the sheet-shaped substrate 1'.

Then, using the transfer sheet 10 'having the normal image 3'formed in this way, the image receiving layer 2'is transferred to another intermediate transfer substrate 1 "as shown in FIG. (In the example shown, since the protective film layer 5'is formed on the base material 1 ", it is on this layer 5 ').
The image receiving layer 2'having Transfer sheet at this time
It is preferable to transfer the weak adhesive layer 4'of 10 'together with the image receiving layer 2'. Further, it is preferable that a protective film layer 5'is formed on the intermediate transfer substrate 1 "via a weak adhesive layer 4" as shown in the figure. The intermediate transfer sheet 10 ″ thus obtained corresponds to the transfer sheet 10 having the first to third reverse images.

FIG. 7 shows a step of transferring the image receiving layer 2'having a positive image 3'to the transferred article 30 using the intermediate transfer sheet 10 ".

Intermediate transfer sheet 10 "with its weak adhesive layer 4'transferred article
A positive image 3'covered with a protective film layer 5'on the article 30 to be transferred is formed by stacking them facing each other, pressing them together, and then peeling off the intermediate transfer material 1 "together with the weak adhesive layer 4". The image receiving layer 2'having In the above method, if the intermediate transfer substrate 1 ″ is not provided with the protective film layer 5 ′, the image receiving layer 2 ′ becomes the uppermost layer, and if necessary, an overcoat layer (not shown) is formed thereon later. Good.

Further, since the image receiving layer 2'is generally formed of a thermoplastic resin which can be dyed with a heat transferable dye, it does not require any adhesive or pressure-sensitive adhesive and can be used as it is for molding plastic moldings, cloths, metals or other materials. It is also possible to heat-fuse the transfer article.

Further, in the transfer sheet 10 of the present invention, it is necessary to peel off the image receiving layer 3 and the sheet-shaped substrate 1. Therefore, in order to facilitate the peelability, a part of the edge of the transfer sheet 10 is a sheet. It is preferable to make a cut (not shown) in the substrate 1. By providing such a cut, the image receiving layer 3 or the base material sheet 1 can be easily peeled off by bending that portion.

Although the transfer method of the present invention has been described above with reference to a basic example, the same applies to the case of carrying out the transfer method of the present invention using a transfer sheet of another embodiment of the present invention not shown.

Next, the present invention will be described in more detail in terms of the main materials and the method of constituting the transfer sheet of the present invention as described above.

As the sheet-shaped substrate or the intermediate transfer substrate, (1) synthetic paper (ori-olefin-based, polystyrene-based, etc.), (2) high-quality paper, art paper, coated paper, cast-coated paper, wallpaper, backing paper, synthetic resin Or emulsion-impregnated paper, synthetic rubber latex-impregnated paper, synthetic resin internal paper,
Paperboard, cellulose fiber paper, (3) films or sheets of various plastics such as polyolefin, polyvinyl chloride, polyester, polystyrene, polymethacrylate, polycarbonate, etc., which are used for conventional transfer sheets, can be used. The shape is not limited at all, and the thickness is generally in the range of several μm to several tens of μm.

Of these, the synthetic paper (1) is preferable because it has a microvoid layer having low thermal conductivity (in other words, high heat insulation) on its surface. Further, a laminated body formed by any combination of the above (1) to (3) can also be used.

The material constituting the image receiving layer is for receiving a heat transferable dye that moves from the heat transfer sheet, for example, a sublimable (heat transferable) dye, and holding an image formed by the reception. For example, the following synthetic resins can be used alone or as a mixture of two or more kinds.

Polyester resin, polyacrylic ester resin, polycarbonate resin, polyvinyl acetate resin, styrene acrylate resin, vinyl toluene acrylate resin, polyurethane resin, polyamide resin, urea resin, polycaprolactone resin, polystyrene resin, polyvinyl chloride resin, vinyl chloride- Vinyl acetate copolymer resin, polyacrylonitrile resin, etc.

Among the above synthetic resins, polyester resins are particularly preferred.

In any of the above cases, the image receiving layer is provided for the purpose of improving the whiteness of the image receiving layer to further improve the sharpness of the transferred image, imparting writability to the surface of the transfer sheet, and preventing bleeding of the transferred image. A white pigment can be added therein.

Further, in order to further enhance the light resistance of the transferred image, an ultraviolet absorber and / or a light stabilizer may be added to the image receiving layer.

The image receiving layer made of the above materials can be formed by any conventionally known method such as a coating method and a transfer method, and the thickness thereof is generally in the range of about 1 to 50 μm.

The transfer sheet of the present invention, in order to improve the releasability of the thermal transfer sheet at the time of image formation, to form a release layer on their image receiving layer surface, or instead, a release agent in the image receiving layer. It can be included. Examples of the release agent include solid waxes such as polyethylene wax, amide wax, and Teflon powder; fluorine-based and phosphoric acid ester-based surfactants; silicone oil and the like, with silicone oil being preferred.

As the pressure-sensitive adhesive forming the weak pressure-sensitive adhesive layer, any pressure-sensitive adhesive used in conventionally known pressure-sensitive adhesive tapes and seals can be used, and examples thereof include polyisoprene rubber, polyisobutyl rubber, styrene butadiene rubber, and butadiene acrylonitrile rubber. Rubber resin such as, (meth) acrylic ester resin, polyvinyl ether resin, polyvinyl acetate resin, vinyl chloride vinyl acetate copolymer resin, polystyrene resin, polyester resin, polyamide resin, polychlorination Olefin resin, polyvinyl butyral resin or any other adhesive, suitable tackifier, for example, rosin, dammar, polymerized rosin, partially hydrogenated rosin,
Ester rosin, polyterpene resin, terpene modified product, petroleum resin, cyclopentadiene resin, phenol resin, styrene resin, xylene resin, coumarone-indene resin, etc. are added in appropriate amounts, and further necessary. Accordingly, a softening agent, a filler, an antiaging agent and the like can be added. All such adhesives are commercially available and can be easily used.

If necessary, an organic solvent may be added to the pressure-sensitive adhesive to adjust the viscosity, and the sheet-shaped substrate or intermediate transfer may be prepared by a conventional coating method such as roll coating, die coating, knife coating, or gravure coating. The pressure-sensitive adhesive layer is formed by coating on the surface of the substrate, the image-receiving layer or the protective film layer. The pressure-sensitive adhesive layer thus formed may have any thickness, but it is generally preferable that the pressure-sensitive adhesive layer has a thickness of about 1 to 50 μm.

The protective film layer is to be peeled off from the sheet-shaped substrate or the intermediate transfer substrate together with the image-receiving layer having an image, and becomes the uppermost layer when the image-receiving layer is inverted and transferred to the transferred article, and the image-receiving layer having an image. Abrasion resistance, light resistance, chemical resistance, etc., for example, as the material for forming the protective layer, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyester, polyamide, polycarbonate, poly A plastic film such as acrylate can be used, and a particularly preferable one is a polyester film excellent in various physical properties such as transparency and abrasion resistance. Further, instead of these film-like protective layers, a solution of the above resins is used. Or emulsion, epoxy resin, alkyd resin, phenol-modified alkyd resin Aminoalkyd resin, phenol resin, urea resin, melamine resin, silicone resin, thermosetting acrylic resin, thermosetting polyurethane resin or other thermosetting resin or room temperature curable resin, other UV curable resin, far-sighted curable resin Alternatively, an active energy ray-curable resin such as a resin may be dissolved in an appropriate solvent to prepare a coating solution or an ink, which may be used to form a coating method. The thickness of such a protective film layer is 0.5-2.
Generally, it is about 0 μm.

The transfer sheet of the present invention is formed from the above materials,
For example, in the case of the first and second illustrations, a composition for forming an image receiving layer, which is obtained by dissolving or dispersing a material for forming an image receiving layer on a sheet-shaped substrate or a weak adhesive layer formed thereon, is known. It is obtained by coating and drying by the coating method or printing method described above to form an image receiving layer, and further providing a release layer if necessary, and forming a reversal image. Alternatively, the image receiving layer can be used as a sheet-shaped substrate. Alternatively, a method may be used in which an image is formed by temporarily forming it on a temporary carrier other than the above and then transferring the image onto a sheet-like substrate which may be provided with a weak adhesive layer to form an image. If the weak adhesive layer is previously formed on the image receiving layer, the weak adhesive layer may not be formed on the sheet-shaped substrate.

In the case of the example shown in FIG. 3, the composition for forming an image receiving layer as described above is similarly applied onto various films to be the protective film layer and dried to form a release layer, if necessary. Then, this is laminated on a sheet-like base material on which a weak adhesive layer is formed by utilizing the weak adhesive layer to form an image, whereby the transfer sheet shown in FIG. 3 is obtained.

The above method is one example, and the transfer sheet of the present invention can be obtained by any other method.

Further, the transfer sheet as described above may be provided with other release layer, intermediate layer and other layers, if necessary.

The above is the constitution of the transfer sheet of the present invention, but a preferable method for forming a desired forward or reverse image is a thermal transfer sheet comprising a heat transferable dye (sublimation dye) layer provided on a sheet-shaped substrate. Is the method to use. Both the thermal transfer sheet itself and the thermal transfer method itself used in this method are known, and all of these known thermal transfer sheets and thermal transfer methods are useful in the present invention. Further, by such a thermal transfer method, both a mono-color image and a full-color image can be easily formed.

For example, a conventionally known thermal transfer sheet is superposed on the transfer sheet of the present invention (corresponding to a transfer target sheet before image formation), and any conventionally known thermal transfer device, for example, a thermal printer (for example, manufactured by Toshiba The desired image can be formed in the image-receiving layer by applying thermal energy of 5 to 100 mJ / mm ² with a device such as a thermal printer TN-5400).

Transfer of the image-receiving layer on which an image as described above is transferred is very easy because a weak adhesive layer is preferably formed between the image-receiving layer and the sheet-shaped substrate, and a thin film having a desired image is formed. Can be transcribed.

As described above, the transfer method of the present invention may be a conventionally known method for the image forming method or the transfer method for an article to be transferred, except that a specific transfer sheet is used. The material to be transferred, which is the object of the transfer method, and the shape thereof are not particularly limited, and examples thereof include cartons, containers, bags, cassette cases, cassette halves, floppy cases, packages such as wrapping paper, stock certificates,
Checks, bills, securities, certificates, passbooks, tickets, car horse tickets,
Stamps, stamps, appreciation tickets, etc .; cash cards, credit cards, telephone cards, ticket purchase cards,
Cards such as members cards, grating cards, postcards, business cards, IC cards, etc .; other forms, envelopes, tags, Shiori, calendars, posters, pamphlets, passports, POP supplies, coasters, displays, name plates, keyboards, cosmetics, etc. Accessories (clock, lighter), stationery, building materials, radio, TV, speakers,
It may be of any material or shape such as a calculator, an automobile instrument panel, an emblem, a key, clothing, footwear, devices, and OA equipment.

(Operation / Effect) According to the transfer sheet and the transfer method of the present invention as described above, a surface such as a three-dimensional molded article, a curved surface or a complicated uneven shape, which has been conventionally impossible or difficult to form and impart an image, can be formed. An image formed by a heat transferable dye can be freely imparted regardless of the articles it has and further the material of these articles.

Moreover, according to the present invention, unlike the conventional so-called picture sticker, since the image receiving layer having an image according to the present invention is very thin, they are sufficiently integrated even when transferred to the transferred article. It has an excellent aesthetics without giving a feeling of sticking,
It has a function and durability.

Next, the present invention will be described more specifically with reference to examples.
In the text, “part” or “%” is based on weight unless otherwise specified.

Example 1 On a polyethylene terephthalate film having a thickness of 9 μm,
A toluene / methyl ethyl ketone = 1/1 mixed solution of a saturated polyester resin (Vylon 600, manufactured by Toyobo) was applied by a reverse roll coating method and dried to form a weak adhesive layer (application amount after drying 7 g / m ² ).

An image-receiving layer-forming composition having the following composition on the weak adhesive layer was coated and dried by a reverse roll coating method using a solid printing diagonal gravure roll to obtain an image-receiving layer (coating amount after drying: 3 g / m ² ) was formed.

Composition for forming image receiving layer: Polyester resin (Toyobo, Byron 200) 70 parts Polyester resin (Toyobo, Byron 290) 30 parts Amino-modified silicone (Shin-Etsu Chemical Co., Ltd., KF-393) 5 parts Epoxy-modified silicone (Shin-Etsu Chemical) Industrial, X-22-34
3) 5 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 700 parts Byron 600 is dried as an adhesive on the surface of the transfer-receiving sheet opposite to the image receiving layer, and the coating amount is 10 g / m ²
Coated and air-dried synthetic paper (YUPO FPG110, 110 μm,
(Oji Yuka Co., Ltd.) was attached as a support to be integrated.

On the other hand, using a polyethylene terephthalate film having a thickness of 6 μm having a heat-resistant layer made of a thermosetting acrylic resin as a base material on one side, the following composition was applied using a wire bar to the side opposite to the side provided with the heat-resistant layer. It was dried and provided with a dye layer of 1 g / m ² (solid content) to obtain a thermal transfer sheet.

Dye layer forming composition; Disperse dye (Nippon Kayaku, Kayaseo Blue 136) 4 parts Ethyl hydroxyethyl cellulose 6 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 90 parts Dye layer of the above thermal transfer sheet and image receiving layer of the transfer sheet The sheets were superposed so that they would come into contact with each other, and heated from the heat-resistant layer side of the thermal transfer sheet with a thermal head to transfer the dye to the image-receiving layer of the transfer-receiving sheet to form a positive image.

The transfer sheet having a positive image formed thereon is placed under heat and pressure (140 ° C. and 5 ° C.) against the intermediate transfer substrate obtained by the following method.
The synthetic paper YUPO was peeled off at the interface between the polyester film and Vylon 600 to obtain a transfer sheet (intermediate transfer medium) of the present invention having a reverse image.

Preparation method of intermediate transfer base material: Fine paper (rice weighing 82 g / m ² ) is extrusion-coated with polyethylene to a thickness of about 20 μm, and the release surface silicone (KS-707 manufactured by Shin-Etsu Chemical Co., Ltd.) is coated with a catalyst. The applied toluene solution has a coating amount of about 0.2 g / m ² after drying.
It was applied and dried so as to be cured, and cured. Further, a coating solution having the following composition was applied onto the layer with a miya bar and dried to obtain an intermediate transfer substrate having a resin coating amount after drying of 7 g / m ² .

Coating solution composition: Polyester resin (Vylon 200, Toyobo) 100 parts Methyl ethyl ketone / toluene (weight ratio 1/1) 700 parts On the other hand, the above coating solution was similarly applied to the coated paper which had been subjected to sealing treatment. A transfer member was prepared, and the image surface of the above-mentioned intermediate transfer medium was opposed to the coated surface and laminated with heat pressure (140 ° C. and 7 seconds), and then the fine paper and the polyethylene laminate layer were peeled off. , A positive image was transferred to the transferred material.

By the above method, the positive image formed by the thermal head is transferred as a positive image to the final transfer target by passing through the intermediate transfer medium, and the transferred positive image is dyed well in the image receiving layer. The color of the image was vivid and deep because it was worn.

Further, since the resin layer is overlaid on the formed image, the weather resistance, abrasion resistance, light resistance and the like of the image are remarkably improved. Furthermore, the light resistance can be further improved by adding an ultraviolet absorber, an antioxidant, a quencher, a radical scavenger or the like to the coating liquid.

Example 2 A decoration having a good positive transfer image as in Example 1 in the same manner as in Example 1 except that the base material of the transferred material was a 100 μm hard polyvinyl chloride card. I got it. Moreover, the one with a face photograph in the image was useful as an ID card.

Example 3 A transparent film having a good positive transfer image as in Example 1 was obtained in the same manner as in Example 1 except that the substrate of the transferred material was a 100 μm transparent polyester film. It was This film was very useful for OHP.

Example 4 As a base material, synthetic paper (manufactured by Oji Yuka, Yupo FPG150, thickness 15)
0 μm) and a polyester film (thickness 6 μm) are laminated, and on the polyester film side, a peeling varnish (Hakurinis 45 manufactured by Showa Ink Co., Ltd.) and 2,5-bis (5′-tert) which is an ultraviolet absorber are provided. -Butylbenzoxazolyl (2)) thiophene 0.5% added to the resin content of the varnish was applied with a wire bar and dried to form a release layer / protective layer with a weight of 1 g / m ^2. did.

Further, an image-receiving layer-forming composition having the following composition was used on the above-mentioned release layer / protective layer, and the composition was applied and dried so that the weight after drying was 7 g / m ² .

Composition for forming image-receiving layer; polyester resin (Toyobo, Byron 200) 100 parts Amino-modified silicone (Shin-Etsu Chemical Co., KF-393) 5 parts Epoxy-modified silicone (Shin-Etsu Chemical Co., X-22-34)
3) 5 parts Solvent (methyl ethyl ketone / toluene / cyclohexanone 4/2/2) 900 parts After coating and drying the above composition, leave it for 1 day, then heat at 100 ° C for 30 minutes to apply silicone to the surface. Bleed to obtain an image receiving layer having a cured silicone layer on the surface.

On the obtained image-receiving layer, a thermal transfer sheet carrying a cyan heat transferable dye with a binder resin was overlaid, and thermal energy was transferred with a thermal head connected to the electric signal of the cyan component obtained by color-separating a facial photograph. Then, a positive cyan image was obtained. Next, thermal transfer was performed in the same manner using a thermal transfer sheet using a magenta dye and a thermal transfer sheet using a yellow dye to form a full-color positive face photograph and a positive image including other characters and figures.

Next, the image-receiving layer of the sheet on which the above-mentioned image is formed is used in Example 1
On the intermediate transfer base material, pressure-bonded with a heat roller at 200 ° C., and after the pressure-bonding, the polyester film is peeled off at the interface of the release layer / protective layer, and the transfer sheet having the reversal image of the present invention (intermediate transfer medium) Got

Thereafter, in the same manner as in Example 1, the image was transferred to the transferred material in the same manner as in Example 1 to obtain a decorative body having a positive transfer image having the same excellent properties as in Example 1.

Example 5 A decoration having a good positive transfer image as in Example 4 in the same manner as in Example 4 except that the base material of the transferred material was a 100 μm hard polyvinyl chloride card. Got the body

Example 6 A transparent film having a good positive transfer image as in Example 4 was obtained in the same manner as in Example 4 except that the substrate of the transferred material was a transparent polyester film of 100 μm. It was This film was very useful for OHP.

Example 7 Polypropylene is added to a high-quality paper (rice weighing 104 g / m ² ) with a thickness of about 20 μm.
Thick was extrusion coating, a release silicone solution of the electron beam curing type coating surface, the coating amount after drying was coated and dried to approximately 1 g / m ^2, and temporarily cured by electron beam Formed a carrier.

An image-receiving layer-forming composition having the following composition was coated on this temporary carrier with a miya bar and dried, and the resin coating amount after drying was 5 g.
An image-receiving layer of / m ² was provided.

And

Composition for forming image-receiving layer; polystyrene resin (Rika Hercules, Picolastic D) 100 parts Amino-modified silicone (KF-393, Shin-Etsu Chemical Co., Ltd.) 7 parts Epoxy-modified silicone (X-22-34, Shin-Etsu Chemical Co., Ltd.
3) 7 parts Solvent (methyl ethyl ketone / toluene weight ratio 1/1) 700 parts The method of the present invention was carried out in the same manner as in Example 2 to obtain a card having a positive image of excellent quality as in Example 2. .

Example 8 A decorative body having an excellent positive image was obtained in the same manner as in Example 7 except that the polyvinyl chloride sheet was used as it was as the transferred material in Example 7.

Example 9 In the same manner as in Example 7 except that a transferable material having a thermoplastic adhesive film (Adwin 500, manufactured by Showa Denko) on its surface was used as the transferred material, a positive film of excellent quality was obtained. A decorative object having an image was obtained.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a basic embodiment of a transfer sheet 10 of the present invention, and FIGS. 2 to 3 are transfer sheets of the present invention.
10 is a diagram showing ten preferred embodiments, and FIGS. 4 to 7 are diagrams schematically showing the transfer method of the present invention. 1, 1 ′, 1 ″; sheet-shaped (intermediate) substrate 2, 2 ′; image receiving layer, 3, 3 ′; image 4, 4 ′, 4 ″; weak adhesive layer 5, 5 ′; protective film layer 10, 10 ′, 10 ″; transfer sheet 20; thermal transfer sheet, 30; transfer target article

Claims (2)

(57) [Claims] 1. A positive image as seen from the image receiving layer side is formed on an image receiving layer of a transfer sheet comprising an image receiving layer releasably provided on one surface of a sheet-shaped substrate, and the image formed image is received. A transfer method, which comprises transferring the layer to an intermediate transfer substrate, and then transferring the transferred image-receiving layer to any transfer target article. 2. A protective film layer is provided on the surface of an intermediate transfer substrate via a weak adhesive layer.
Method of heat transfer described in paragraph.