JPS6387284A - Transfer sheet and transfer method - Google Patents

Abstract

PURPOSE:To transfer an image onto an arbitrary object as a non-reversed image, by providing a releasable image-receiving layer on the surface of a sheet-shaped base, and forming a reversed image (as viewed from the image-receiving layer side) on the image-receiving layer by using a thermally transferable dye. CONSTITUTION:On an image-receiving layer 2 provided on one side of a sheet-shaped base 1 of a thermal transfer sheet 10, a reversed image 3 is once formed by using a thermally transferable dye capable of dyeing. Next, the transfer sheet 10 is laid on an object 30, with the image side of the sheet 10 facing an objective surface of the object 30, they are pressed against each other, and thermal energy is applied according to an image signal from a thermal head, thereby forming a desired non- reversed image on the image-receiving layer 2. It is preferable to provide a weak adhesive layer 4 so that the layer 2 and the base 1 are not strongly adhered to each other and can be easily released from each other. By this method it is possible to freely transfer an image of a thermally transferable dye onto three-dimensional molded objects or objects having a curved surface or a complicated rugged shape, on which such image can not be easily provided by conventional methods, irrespective of the material of the object.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a transfer sheet and a transfer force method using the transfer sheet, and more specifically, to a method for transferring images formed with heat-transferable dyes (transferable dyes). The present invention provides a transfer sheet that can be transferred as a normal image to an article to be transferred of any size or quality, and a transfer method using the transfer sheet.

(Conventional technology) Conventionally, thermal transfer of fabric using heat-transferable dye (shōgō thermal transfer)
This method has been used for a long time, and involves forming an inverted pattern layer of a dye carrying a heat-transferable dye on a thermal transfer sheet substrate, placing this on a fabric and heating it, and applying the dye to a chisel cloth. In this method, a positive image is formed on the fabric by transferring the image. Utilizing this technology, coupled with the recent development of image technology such as thermal printers (J1), it is possible to transfer images as dense as photographs from thermal transfer sheets containing heat-transferable dyes to plastic films. Several methods have been proposed.

According to this recent method, for example, it is possible to easily make a hard copy of a camera, image, television image, computer graphic image, etc. on the surface of a transfer material such as paper having a polyester layer, and it is possible to easily make a hard copy of a camera, image, television image, computer graphic image, etc. It has reached a level where it can compete in 1 minute with technology and printing technology.

(Problem to be solved by the invention) - The thermal transfer technology described above has the advantage of being able to easily form any image, but the transferred article may not be adhered by heat-transferable dyes such as polyester. On the other hand, the shape of the object to be transferred is limited to a sheet-like object such as a film or a sheet. For example, it is difficult to form an image on wood, metal, glass, ceramics, etc. Furthermore, even if the image forming surface of plastics such as polyester is curved, has an uneven shape, or even has a lower surface, it cannot be used for materials other than sheet-like materials.
A problem with physical moldings is that it is difficult to image them.

In particular, as the field of use of various cards such as cash cards has expanded in recent years, it has become necessary to add images and symbols to these cards and give them extreme functions and decorations. Although cards are flat, they are not flexible or have uneven parts such as letters and symbols, so images are attached to these cards using the above thermal transfer method! It is also difficult to do so.

One way to solve these drawbacks is to attach a sticker with a picture of the desired image to a desired location on the desired article. However, in this method, the sticker material is relatively thick, so the attached portion protrudes and There is no sense of unity between the sticker and the object being decorated.
It also has the disadvantage of being easy to peel off.

In addition, as a method that does not cause such drawbacks, there is a force method that uses a thermal transfer method such as a hot stamp method.
This method has the disadvantage that a heating step is always required during image transfer, and also has the same problem that thermal transfer is difficult on surfaces with complex irregularities, as described above.

Therefore, it is made of 0 materials and has an arbitrary shape.
There is a need for the development of a technique that allows a desired image to be easily applied to the surface of an article having a surface shape of #j, and in which the image and the transferred article are integrated.

(Step 1 for solving the problem) That is, in the present invention, a peelable image-receiving layer is provided on one side of a sheet-like base material, and a reverse image is formed on the image-receiving layer when viewed from the image-receiving layer side. Forming a positive image when viewed from the image-receiving layer side on the image-receiving layer of a transfer sheet comprising a transfer sheet and an image-receiving layer removably provided on one surface of a sheet-like base material. This transfer method is characterized in that the image-receiving layer on which the image has been formed is transferred to an intermediate transfer material, and then the transferred image-receiving layer is re-transferred to the transferred article.

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

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

As shown in the first figure, the J! of the thermal transfer sheet 10 of the present invention! The basic horizontal rL is that a peelable image receiving layer 2 is provided on one side of a sheet-like base material 1, and a reversed image 3 is provided on the image receiving layer 2 when viewed from the image receiving layer side. It is characterized by

By having the transfer sheet IO of the present invention having such a basic structure, a positive image can be easily transferred from the transfer sheet to any desired object by a transfer method, and the drawbacks of the prior art as described above can be basically avoided. It is something that can be solved.

That is, the image-receiving layer 2 in the above is limited to materials that can be dyed with heat-transferable dyes, but if a 10-inversion image 3 is formed using these dyes, it can be made of glass, metal, wood, or heat-transferable materials. Depending on the migratory dye, it is possible to freely transfer a normal image even to plastic materials that are difficult to dye.

Furthermore, since the image receiving layer 2 having the image 3 and being transferred from the sheet-like base material 1 is very thin and has a certain degree of flexibility, the surface shape of the transferred article is curved or uneven. However, since it is possible to follow the surface shape within 1 minute, the transfer is not limited by the surface shape of the object to be transferred.

Furthermore, since the image-receiving layer 2 having the image 3 is very thin, unlike conventional stickers, it is easy to integrate with the transferred article, and there is no bulge L in the transfer area, making it similar to a so-called sticker. It does not give a 7+ feeling of adhesion.

In the transfer sheet 10 described in "-", in the image-receiving layer 2.

Due to the thinness of these layers, various handling is difficult and the presence of the sheet-like base material 1 is necessary.

In addition, since the image receiving layer 2 provided on this sheet-like J^ material is required to be easily peelable during transfer, the image receiving layer 2 is
and the sheet-like base material 1 must not be strongly adhered to each other, and it is preferable to provide a weak adhesive layer 4 so that they can be easily peeled off (FIG. 2). Therefore, in the present invention, "adhesive" means that the image-receiving layer 2 or the sheet-like base material l carrying the image 3 can be easily peeled off from the other side with one finger or another step without being damaged. are doing. However, if the material relationship between the image-receiving layer 2 and the sheet-like base material 1 allows for easy separation as described above, the weak adhesive layer is not necessarily necessary.

Further, 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 S-type layer is
This is to prevent adhesion between the thermal transfer sheet and the image-receiving layer 2 due to heat when an image 3' is formed on the image-receiving layer 2 by transferring a heat-transferable dye from the thermal transfer sheet 20 as shown in Figure 5. This is not necessary if such adhesion does not occur or if such a release layer 22 is provided on the surface of the transfer sheet.

In the example shown in the third figure, a protective film layer 5 is further provided between the image receiving layer 2 and the weak adhesive layer 4 in the example shown in the second figure. This protective film layer 5 protects the image-receiving layer 2 when the image-receiving layer 2 having the reverse image 3 is transferred with the surface (image-forming surface) of the image-receiving layer 2 facing the object to be transferred (see FIG. 4). It is made of materials with excellent physical properties such as abrasion resistance, light resistance, resistance to chemicals, and resistance to chemicals. By providing such a protective film layer 5, it is possible to improve various fastnesses of the image after being transferred to the transfer target article.

In the example shown in the third figure above, another release 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 releasable. You can. It is not necessary when the interface between the protective film layer 5 and the weak adhesive layer 4 has a peelability of 4r for 1 minute.

The transfer sheet 10 of the present invention as shown in Figures 1 to 3 of ``-'' will be explained in detail later, but is basically obtained by the method described above.

(1) A method of directly thermally transferring and forming a reverse image using a normal thermal transfer sheet having a heat-transferable dye layer on a transfer sheet having the same structure as shown in Figures 1 to 3 except that an image is formed; Alternatively, a normal image is formed in (2), and the image receiving layer for 4R of the formed image is once transferred to an intermediate transfer base material, and the above (1)
) A method of producing a transfer sheet with a reversed image.

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

The basic mode will be explained using the method diagrammatically shown in FIGS. 4 to 7.

The example shown in FIG. 4 uses the transfer sheet 10 shown in FIG.
This is an example in which the sheet-like base material l of the transfer sheet 10 is then peeled off together with the weak adhesive layer 4. At this time, an adhesive layer or an adhesive layer can be provided on one or both of the image receiving layer 2 and the transferred article 30 if necessary, but since the image receiving layer 2 of the transfer sheet 10 is heat-fusible, adhesive It is also possible to heat-seal without using.

The example shown in Figures 5 to 7 is a method in which transfer is performed via a -n intermediate transfer sheet-like base material. First, as shown in Figure 5, a thermal transfer sheet 20 with a heat-transferable dye layer 21 of 4F is applied to a transfer sheet 10. ' (in this state, the image 3' has not yet been formed and corresponds to the transfer sheet), a dye layer 21 (jil
The T-type layer 22) is stacked so as to face the image-receiving layer 2' of the transfer sheet lO', and preferably by applying thermal energy (arrow) from the thermal head (+S) to the image from the thermal transfer sheet side, A desired positive image 3' is formed on the image-receiving layer 2'.In this case, the transfer sheet 10' includes a weak adhesive layer 4 between the image-receiving layer 2' and the sheet-like base material 1'.
It is preferable to provide .

Next, 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. 1″■
(In the illustrated example, a protective film layer 5' is formed on this base material 1''1, so this layer becomes 5'F.) An image receiving layer 2' having a reversed image 3' is transferred onto it. At this time, It is preferable that the weak adhesive layer 4' of the transfer sheet 10' is also transferred together with the image-receiving layer 2', and a protective film layer 5' is formed on this intermediate transfer substrate 1'' via the weak adhesive layer 4'' as shown in the figure. The intermediate transfer sheet 10'' thus obtained corresponds to a transfer sheet 10 containing four copies of the first to third reverse images.

FIG. 7 shows a process of transferring an image receiving layer 2' having a positive image 3' to a transfer target article 30 using the above-mentioned intermediate transfer sheet 10''.

By overlapping the intermediate transfer sheet 10'' with its weak adhesive layer 4' facing the transferred article 30, pressing them together, and then peeling off the intermediate transfer material 1'' together with the weak adhesive layer 4'', the transferred article 30F is formed. An image receiving layer 2' having a positive image 3' covered with a protective film layer 5' is transferred to the image receiving layer 2' having a positive image 3' covered with a protective film layer 5'. The image-receiving layer 2' is the uppermost layer, and an overcoat layer (not shown) may be formed thereon later if necessary.

In addition, since the image-receiving layer 2' is generally made of a thermoplastic resin that can not be attached with heat-transferable dyes, it can be used as a plastic molded product without any adhesive or calcifying agent.
It is also possible to apply hot fusion to textiles, metals, and other objects to be transferred.

Furthermore, in the transfer sheet 10 of the present invention, it is necessary to peel off the image receiving layer 3 and the sheet-like base material l, so in order to facilitate the peeling, a part of the edge of the transfer sheet 10 is It is preferable to make incisions (UA not shown) in the sheet-like base material 1.

By providing such a cut, the image receiving layer 3 or the base sheet 1 can be easily peeled off by bending the cut portion.

Although the transfer method of the present invention has been described above using a basic example, the same applies to the case where the transfer method of the present invention is carried out using a transfer sheet of another embodiment of the present invention (not shown).

Next, the present invention will be explained in more detail from the viewpoint of the main materials and construction method of the transfer sheet of the present invention as shown in F below.

Sheet-like base material or intermediate transfer J! Materials include (1) synthetic paper (polyolefin, polystyrene, etc.), (2)
High quality paper, art paper, coated paper, cast coated paper, wallpaper, flint paper, synthetic resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internally added paper, paperboard, etc., cellulose fiber paper, (3) polyolefin, polyester vinyl chloride, polyester, polystyrene, polymethacrylate,
Any of the various plastic films or sheets used for conventional transfer sheets such as polycarbonate can be used, the shape is not limited in any way, and the thickness is generally in the range of several μm to several 4 μm. .

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

The material constituting the image-receiving layer is one that receives heat-transferable dyes that migrate from the thermal transfer sheet, such as sublimable (thermally-transferable) dyes, and retains images formed by reception.For example, the following materials are used: These synthetic resins can be used alone or in combination of two or more.

Polyester resin, polyacrylate 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 whiteness of the image-receiving layer is improved and the image is transferred; the clarity of the image is further enhanced and writing properties are added to the surface of the transfer sheet to prevent retention of the transferred image. A white pigment can be added to the image-receiving layer for this purpose.

Further, in order to further improve 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 or a transfer method.
Their thickness generally ranges from about 1 to 50 μm.

In order to improve the patternability with the thermal transfer sheet during image formation, the transfer sheet of the present invention has a release layer formed on the surface of the image-receiving layer, or alternatively, a release agent is added in the image-receiving layer. It is possible to make it contain. Examples of the mold release agent include solid waxes such as polyethylene wax, amide wax, and Teflon powder; fluorine-based and phosphoric acid ester-based surfactants; and silicone oil, with silicone oil being preferred.

As the adhesive forming the weak adhesive layer, any adhesive used in conventionally known adhesive tapes and stickers can be used, such as polyisoprene rubber, polyisobutyl rubber, styrene-butadiene rubber, butadiene rubber, etc. Rubber resins such as acrylonitrile rubber, (meth)acrylic acid ester resins, polyvinyl ether resins, polyvinyl acetate resins, vinyl chloride vinyl acetate copolymer resins, polystyrene resins, polyester resins, polyamide resins, Suitable tackifiers such as rosin, dammar, polymerized rosin, partially hydrogenated rosin, ester rosin, polyterpene resin, modified terpene,
Appropriate amounts of petroleum resin, cyclopentadiene resin, phenol resin, styrene resin, xylene resin, coumaron-indene resin, etc. are added, and if necessary, softeners, fillers, Anti-aging agents and the like can also be added. All such demulcents are commercially available and can be easily used.

If necessary, an organic solvent is added to such an adhesive to adjust the viscosity, and the sheet-like base material is coated by a conventional coating method such as roll coating, die coating, knife coating, or gravure coating.
An adhesive layer is formed by coating the surface of the intermediate transfer substrate, image receiving layer, or protective film layer. The adhesive layer formed in this way may have any thickness, but generally has a thickness of about 1 to 1.
It is preferable to form it to a thickness of 50 μm.

The protective film layer is peeled off from the sheet-like J^ material or intermediate transfer base material together with the image-receiving layer having an image, and becomes the top layer when the image-receiving layer is reversed and transferred to the transfer target. It improves the abrasion resistance, light resistance, chemical resistance, etc. of the layer. For example, materials forming the protective layer include polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyester, polyamide, polycarbonate, Plastic films such as polyacrylate can be used, and particularly preferred are polyester films that have excellent physical properties such as transparency and abrasion resistance. Solutions or emulsions of resins, and thermosetting of epoxy resins, alkyd resins, phenol-modified alkyd resins, amino alkyd resins, phenolic resins, urea resins, melamine resins, silicone resins, thermosetting acrylic resins, thermosetting polyurethane resins, etc. A coating liquid or ink is prepared by dissolving mold resin, room temperature curable resin, other active energy ray curable resin such as ultraviolet ray hardening resin, electric f-ray hardening resin, etc. in a suitable solvent. It may also be formed by a coating method using.

The thickness of such a protective film layer is generally about 0.5 to 20 μm.

The transfer sheet of the present invention is formed from the above-mentioned materials. For example, in the case shown in the first and second figures, the material forming the image-receiving layer is dissolved on the sheet-like base material 1 or the weak adhesive layer formed thereon. The composition for forming an image-receiving layer obtained by dispersing the image-receiving layer is coated and dried by a known coating method or printing method to form an image-receiving layer, and if necessary, a release layer is provided to form a reverse image. Alternatively, the image-receiving layer may be placed on a temporary carrier separate from the sheet-like substrate.
This may be carried out by a method of forming an image on a sheet-like substrate, which may also be provided with a weak adhesive layer. If a weak adhesive layer is formed on the P image-receiving layer,
It is not necessary to form a weak adhesive layer on the sheet-like substrate.

In the case of the example shown in Figure 3, the composition for forming an image-receiving layer as described in 1 is coated and dried in the same manner on various films to be a protective film layer, and if necessary, a release layer is formed. A transfer sheet as shown in the third figure is obtained by forming a weak adhesive layer thereon, laminating it onto a sheet-like base material using the weak adhesive layer, and forming an image.

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

Furthermore, the transfer sheet as described above may be provided with other layers such as a release layer, an intermediate layer, and the like, if necessary.

The above is the structure of the transfer sheet of the present invention, but a preferred method for forming a desired forward or reverse image is to use a thermal transfer sheet in which a heat-transferable dye layer is provided on a sheet-like substrate. This is the method to use. The thermal transfer sheet itself and the thermal transfer method used in this method are both known, and any of these known thermal transfer sheets and thermal transfer methods are useful in the present invention. Further, by such a thermal transfer method, both monochrome and full color images can be easily formed.

For example, a conventionally known thermal transfer sheet is superimposed on the transfer sheet of the present invention (which corresponds to the transfer sheet since it is not yet imaged) and is used in any conventionally known thermal transfer apparatus, for example.
5 to 100 mJ by a device such as a thermal printer (for example, Toshiba's thermal printer TN-5400)
/mrn” of thermal energy, a desired image can be formed in the image-receiving layer.

The transfer of the image-receiving layer on which the above-mentioned image is formed is very easy since a 5N adhesive layer is preferably formed between the image-receiving layer and the sheet-like base material. Can be transcribed.

As described above, in the transfer method of the present invention, except for using a specific transfer sheet, the image forming method and the transfer method for the transferred article may be conventionally known methods. The material and shape of the object to be transferred, which is the object of the transfer method, are not particularly limited, and examples include cartons,
Contents; ≦, bags, cassette cases, cassette halves,
Packages such as floppy cases and wrapping paper; stock certificates, checks, bills, securities, deeds, bankbooks, riding tickets, horse racing tickets, stamps, tickets, and other gift certificates such as appreciation tickets: cash cards, credit cards, telephone cards, Ticket purchase cards, membership cards, greeting cards, postcards, business cards,
Cards such as IC cards: Others, forms, envelopes, tags, paperbacks, calendars, posters, pamphlets, passports, 202m items, coasters, displays, name plates, keyboards, cosmetics, accessories (watches, lighters), pomelos, etc. , building materials, radios, televisions, speakers,
electric <(, automatic meter panel, emblem, key,
It may be of any material or shape, such as clothing, footwear, devices, OA equipment, etc.

(Operation/Effect) According to the transfer sheet and transfer method of the present invention as described above, it has been impossible or difficult to form and apply images on three-dimensional molded objects, Images formed with heat-transferable dyes can be freely applied to articles having surfaces, and regardless of the materials of these articles.

Moreover, according to the present invention, unlike conventional so-called picture stickers, the image-receiving layer carrying the image according to the present invention is very thin, so even if it is transferred to an object, it is not fully integrated. Excellent beauty without giving a sticky feeling.
It offers superior functionality and durability.

Next, the present invention will be further explained in a Jt-specific manner with reference to Examples.

In the text, parts and percentages are based on weight unless otherwise specified.

Example 1 A 9 μm thick polyethylene terephthalate film was coated with a mixed solution of saturated polynisder resin (Vylon 600, manufactured by Toyobo) in toluene/methyl ethyl ketone = 1/l using a reverse roll coating method and dried to form a weak adhesive layer. (7 g/g at the time of application after drying).

A composition for forming an image-receiving layer having the following composition was applied onto the weak adhesive layer by a reverse roll coating method using a diagonal gravure roll for solid printing, and dried to form an image-receiving layer (coating amount after drying: 3 g/ m”) was formed.

Polyester resin (Toyobo Co., Ltd., Byron 200) 70 parts Polyester resin (Toyobo Co., Ltd., Byron 290) 39 parts Amino-modified silicone (Shin-Etsu Chemical Co., Ltd., KF-393) 5 parts Epoxy-modified silicone (Manufactured by Ietsu Chemical Industry, X-22-343)
5 parts Methyl ethyl ketone/toluene (first stop 1/1) 700 parts Vylon 600 was applied as an adhesive to the surface opposite to the image-receiving layer of the transfer sheet produced in this manner at a coating amount of 10 g/g after drying and air-dried. synthetic paper (YUPO FPGI 10, 11
0 μm, manufactured by Kof Yuka Co., Ltd.) was laminated as a support and integrated.

On the other hand, a 6 μm thick polyethylene terephthalate film with a heat-resistant layer made of thermosetting acrylic resin on one side was used as a J^ material, and the following composition was applied to the opposite side from the heat-resistant layer using a wire bar. Apply and dry, 1g/rr
A thermal transfer sheet was provided with a dye layer of 1" (solid content).

Disperse dye (Nippon Kayaku, Kayaseo Blue 136) 4 parts Ethyl hydroxyethyl cellulose 6 parts Methyl ethyl ketone/toluene (1/1 ratio to Kawa) 90 parts Dye layer of the above thermal transfer sheet and transferred material The sheets were stacked so that they were in contact with the image-receiving layer, and heated by a thermal head from the heat-resistant layer side of the thermal transfer sheet to transfer the dye to the image-receiving layer of the transfer sheet to form a positive image.

The transfer sheet on which the normal image has been formed is placed facing an intermediate transfer base material obtained by the F distribution method and heated under heat (140°C and 5°C).
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 reversed image.

1. High-quality paper (8 m²)
2g/rn'') with polyethylene extrusion coating to a thickness of approximately 20μm, and a toluene solution containing release silicone (KS-707, manufactured by Shin-Etsu Chemical Co., Ltd., manufactured by Shin-Etsu Chemical Co., Ltd., KS-707) and a catalyst was applied to the coating surface until the coating amount after drying was approximately 20μm thick. 0.2g/
Curing was performed by applying a thick coat and drying. Further, a coating liquid having the following composition was applied on top of this with Myabah and dried, and the amount of resin coating after drying was 7 g /
m'' intermediate transfer base material.

1 Artificial dish bottom 2 Polyester resin (Byron 200, Toyobo + yJ) Too part Methyl ethyl ketone/toluene (weight ratio 1/1) 700 parts Meanwhile, the above coating liquid was similarly applied to coated paper that had been sealed. A transfer body made of 7A was stacked with the image surface of the intermediate transfer medium facing the coated surface and hot pressed (140°C and 7 seconds).
After lamination, the high-quality paper and the polyethylene laminate layer were peeled off, and a positive image was transferred to the transfer target.

By the above method, the normal image formed by the thermal head is transferred to the final transfer object by passing through the intermediate transfer medium, and the transferred normal image is well dyed in the image-receiving layer. Because of this, the colors of the image were vivid and had depth.

Also, since a resin layer is overlaid on the formed image,
Image durability, abrasion resistance, light resistance, etc. were significantly improved. Further, the coating liquid contains an ultraviolet absorber, an antioxidant,
Light resistance can be further improved by adding a quencher, a radical scavenger, etc.

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

Example 3 In Example 1, the base material of the transfer target was Zo.

Example 1 except that a μm transparent polyester film was used.
In the same manner as in Example 1, a transparent film which produced a good positive transfer image was obtained. This film was very useful for OHP applications.

Example 4 Synthetic paper as a base material (O-O Yuka Co., Ltd., Yupo FPGI50,
150 μm thick) and polyester film (6 μm thick)
), and apply peel varnish (manufactured by Showa Ink, Hakurinis 4) to the polyester film side.
5) contains 2,5-bis(5'-tar), which is an ultraviolet absorber.
A mixture of t-butylbenzoxasilyl (2) thiophene added at 0.5% based on the resin content of the varnish was applied with a wire bar and dried to form a release layer and protection with a weight of 1 g/ba after drying. formed a layer.

Furthermore, a composition for forming an image-receiving layer having the following composition was used on the above-mentioned release layer/protective layer, and was coated and dried so that the weight after drying was 7 g/g.

A/Layer 5 I = Polyester resin (manufactured by Toyobo, Vylon 200)
100 parts amino-modified silicone (
Manufactured by Shin-Etsu Chemical Co., Ltd., F-: 193)
5-part epoxy-modified silicone ((2-Koshi Chemical Industry Co., Ltd., X-22-34:l)
5 parts Solvent (methyl ethyl ketone/toluene/cyclohexanone 4/2/2) 900 parts 1 Apply the composition 4
After drying and drying, it was left for one day, and then heated at a temperature of 100° C. for 30 minutes to bleed silicone onto the surface, resulting in an image-receiving layer having a hardened silicone layer on the surface.

A thermal transfer sheet containing a cyan heat-transferable dye supported by a binder resin is placed on top of the resulting image-receiving layer, and a thermal head connected to the electric signal of the cyan component obtained by color-separating the facial photograph is used to transfer thermal energy. 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 positive image consisting of a full-color photograph of the positive face and other characters and figures.

Next, the image-receiving layer of the sheet on which the image was formed was layered on the intermediate transfer γ base material of Example 1 and pressed with a heated roller at 200°C. After the pressing, a polyester film was added as a release layer and a five-layer was peeled off at the interface to obtain a transfer sheet (intermediate transfer medium) having a reversed image of the present invention.

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

Example 5 In Example 4, a good positive transferred image was obtained in the same manner as in Example 4 except that the base material of the transfer object was a 100 μm solid polyvinyl chloride card. A decorative body having the following properties was obtained.

Example 6 In Example 4, the same procedure as in Example 4 was carried out except that the base material of the transfer object was a 100 μm transparent polyester film. This film was very useful as an OHP film.

Example 7 Extrusion coating of polypropylene to approximately 20 μm l' on 7Tτ paper (rice yuzu 104 g/rn'') was applied, and an electric Y-ray curing type release layer silicone solution was applied to the coated surface in the amount applied after drying. It was coated and dried at a concentration of about 1 g/ba, and then sintered with electric f-rays to form a temporary carrier.

On this temporary carrier, a composition for forming an image-receiving layer having the composition described above was coated with Myabah and dried to form an image-receiving layer having a resin coating amount of 5 g/g after drying.

And so.

Voice/Surface layer I゛: Polystyrene resin (manufactured by Rika Percules, Picolastic D) 100 parts amino-modified silicone (manufactured by Etsu Kagaku Kogyo, F-: 193)
7-part epoxy-modified silicone (manufactured by Shin-Etsu Chemical, X-22-343)
7 parts Solvent (methyl ethyl ketone/toluene!n ratio 1/1) 700 parts or more F
In the same manner as in Example 2, the method of the present invention was carried out, and as in Example 2, 1! I was.

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 transfer target.

Example 9 In Example 7, thermoplastic adhesive 4 was used as the transfer target on the surface.
A 4U decorative body that produces a positive image of excellent quality was prepared in the same manner as in Example 7, except that a film provided with a magnetic film (Atwin 500, manufactured by Showa Denko) was used.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing the basic aspect of the transfer sheet 10 of the present invention, and FIGS. 2IA to 3 are diagrams showing preferred embodiments of the transfer sheet 10 of the present invention. 4~
FIG. 7 is a diagram schematically showing the transfer method of the present invention. 1.1', 1''; sheet-like (intermediate) base material 2.2': image-receiving layer 3.3': image 4.4', 4''; adhesive layer 5.5': protective film layer 10.10 ', 10'': Transfer sheet 20: Thermal transfer sheet 30: Transferred article Patent applicant
Dai Nippon Printing Co., Ltd. Agent Attorney Blue 1) Katsuhiro Figure 1 Figure 5 Figure 6

Claims (1)

[Claims] (1) A transfer characterized in that a removable image-receiving layer is provided on one side of a sheet-like base material, and a reverse image is formed on the image-receiving layer when viewed from the image-receiving layer side. sheet. (2) The transfer sheet according to claim (1), wherein a weak adhesive layer is formed between the image-receiving layer and the sheet-like base material. (3) The transfer sheet according to claim (2), wherein a protective film layer is provided between the image-receiving layer and the weak adhesive layer. (4) The transfer sheet according to claim (3), wherein the protective film layer and the weak adhesive layer are releasable. (5) The transfer sheet according to claim (2), wherein the weak adhesive layer and the sheet-like base material are releasable. (6) The transfer sheet according to claim (1), wherein the image-receiving layer is formed from a material that can be dyed with a heat-transferable dye. (7) The transfer sheet according to claim (1), wherein the image-receiving layer is made of polyester. (8) Forming a positive image when viewed from the image-receiving layer side on the image-receiving layer of the transfer sheet consisting of an image-receiving layer removably provided on one surface of a sheet-like base material, and forming the image-receiving layer on which the image is formed. A transfer method, which comprises transferring the image-receiving layer to an intermediate transfer base material, and then re-transferring the transferred image-receiving layer to an arbitrary transfer target article. (10) The transfer method according to claim (9), wherein a protective film layer is provided on the surface of the intermediate transfer substrate via a weak adhesive layer.