JP6940814B2 - Thermal transfer sheet, manufacturing method of photographic paper, and combination of thermal transfer sheet and protective film - Google Patents

Description

The present invention relates to a thermal transfer sheet, a method for producing a printed matter, and a combination of a thermal transfer sheet and a protective film.

Generally, a heat transfer image receiving sheet provided with a receiving layer on a base material is used for producing a printed matter. In this heat transfer image receiving sheet, a receiving layer is located on the outermost surface, and a printed matter can be produced by forming a heat transfer image on the receiving layer.

Recently, with the diversification of applications of printed matter, it is desired to manufacture the printed matter by using an arbitrary transferred body which is appropriately set according to the intended use, instead of using a heat transfer image receiving sheet prepared in advance. There is also a request. In response to such a demand, a thermal transfer sheet having a transfer layer provided on a substrate is used to transfer the transfer layer onto an arbitrary object to be transferred, and thermal transfer in which the receiving layer is located on the outermost surface thereof. Attempts have been made to manufacture image-receiving sheets. As a thermal transfer sheet for producing such a thermal transfer image receiving sheet, for example, in Patent Document 1, a transferable resin layer (transfer layer) containing at least a dye receiving layer (receptive layer) is provided on one surface of the base material. A receptive layer transfer sheet (thermal transfer sheet) provided and in which a heat-sensitive adhesive layer (adhesive layer) is located on the uppermost layer of the transferable receptive layer has been proposed. According to such a thermal transfer sheet, a thermal transfer image is formed on a receiving layer located on the outermost surface of the manufactured thermal transfer image receiving sheet by using a sublimation type thermal transfer method, thereby thermally transferring the image onto an arbitrary object to be transferred. It is possible to manufacture a photographic product on which an image is formed.

Further, for the purpose of protecting the heat transfer image formed on the receiving layer, a method of laminating a protective film on the heat transfer image is also known. In this case, the transfer layer of the thermal transfer sheet for producing the thermal transfer image receiving sheet, that is, the receptive layer located on the outermost surface after transfer, needs to have good adhesion to the protective film, but the thermal transfer image receiving sheet. At present, sufficient studies have not been made on the adhesion between the receiving layer of the thermal transfer sheet for producing the film and the protective film.

Japanese Unexamined Patent Publication No. 5-155165

The present invention has been made in such a situation, and the thermal transfer sheet capable of producing a thermal transfer image receiving sheet having good adhesion to the protective film and the adhesive layer on which the thermal transfer image is formed and the protective film have adhesion. The main subject is to provide a good method for producing a printed matter, and to provide a combination of a thermal transfer sheet and a protective film for producing the printed matter.

The thermal transfer sheet according to the embodiment of the present disclosure for solving the above problems is a thermal transfer sheet used for manufacturing a thermal transfer image receiving sheet, and a receiving layer and an adhesive layer are arranged in this order on one surface of a base material. The transfer layer is provided, the contact angle of oleic acid on the surface of the transfer layer on the substrate side is 30 ° or less, and the receiving layer contains silicone oil and a cellulosic resin. It is characterized by being.
The thermal transfer sheet of one embodiment is a thermal transfer sheet used for manufacturing a thermal transfer image receiving sheet, and a transfer layer in which a receiving layer and an adhesive layer are laminated in this order is provided on one surface of a base material. The contact angle of oleic acid on the surface of the transfer layer on the substrate side is 30 ° or less.

Further, in the above-mentioned thermal transfer sheet, the transfer layer and the dye layer containing a sublimation dye may be sequentially provided on the same surface of the base material.

Further, in the method for producing a printed matter according to the embodiment of the present disclosure for solving the above problems, the transfer layer is transferred onto the transfer target by combining the thermal transfer sheet and the transfer target. It is characterized by including a step of forming a thermal transfer image on the transfer layer transferred onto the transferred body, and a step of laminating a protective film on the formed image.

Further, the contact angle of oleic acid on the surface of the protective film used in the method for producing the above-mentioned printed matter may be 35 ° or less.

Further, in the combination of the thermal transfer sheet and the protective film according to the embodiment of the present disclosure for solving the above-mentioned problems, the thermal transfer sheet is the above-mentioned thermal transfer sheet, and the protective film has an oleic acid contact angle on the surface thereof. It is characterized by being a protective film having a temperature of 35 ° or less.

According to the thermal transfer sheet according to the embodiment of the present disclosure, the thermal transfer sheet can be used to produce a thermal transfer image receiving sheet having good adhesion to a protective film. Further, according to the method for producing a printed matter according to the embodiment of the present disclosure and the combination of the thermal transfer sheet and the protective film, the printed matter having good adhesion between the receiving layer on which the thermal transfer image is formed and the protective film can be obtained. Can be manufactured.

It is a schematic cross-sectional view which shows an example of the thermal transfer sheet which concerns on embodiment of this disclosure. It is a schematic cross-sectional view which shows an example of the thermal transfer sheet which concerns on embodiment of this disclosure. It is schematic cross-sectional view which shows an example of the thermal transfer image receiving sheet manufactured by using the thermal transfer sheet which concerns on embodiment of this disclosure. It is a process drawing which shows an example of the manufacturing method of the printed matter which concerns on embodiment of this disclosure. It is the schematic sectional drawing for demonstrating the structure of the intermediate transfer medium.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention can be implemented in many different modes, and is not construed as being limited to the description of the embodiments illustrated below. Further, in order to clarify the description, the drawings may schematically represent the thickness, shape, etc. of each layer as compared with the actual embodiment, but this is merely an example and limits the interpretation of the present invention. is not it. Further, in the specification of the present application and each of the drawings, the same elements as those described above with respect to the above-described drawings may be designated by the same reference numerals, and detailed description thereof may be omitted as appropriate.

<< Thermal transfer sheet >>
The thermal transfer sheet according to the embodiment of the present disclosure (hereinafter, referred to as the thermal transfer sheet of one embodiment) is provided with a transfer layer 10 on one surface of the base material 1 as shown in FIGS. 1 and 2. The transfer layer 10 has a laminated structure in which the receiving layer 2 and the adhesive layer 4 are laminated in this order from the base material side. The thermal transfer sheet 100 in the form shown in FIG. 2 has a structure in which a transfer layer 10 and a dye layer 5 are provided in a surface-sequential manner on the same surface of the base material 1. 1 and 2 are schematic cross-sectional views showing an example of the thermal transfer sheet of one embodiment.

FIG. 3 is a schematic cross-sectional view showing an example of a thermal transfer image receiving sheet 200 formed by using the thermal transfer sheet 100 (see FIGS. 1 and 2) of one embodiment. According to the thermal transfer sheet 100 of one embodiment, the transfer layer 10 including the receiving layer 2 is transferred onto an arbitrary transferred body 301 (hereinafter referred to as the transferred body), and the receiving layer 2 is located on the outermost surface. A thermal transfer image receiving sheet can be manufactured.

As one of the thermal transfer sheets provided with the receiving layer, as shown in FIG. 5, an intermediate transfer in which a transfer layer 10A including the receiving layer 2A located on the outermost surface is removably (separably) provided from the base material 401. The medium 400 is known. According to the intermediate transfer medium 400 in which the receiving layer 2A is located on the outermost surface, a thermal transfer image can be formed on the receiving layer 2A before the receiving layer 2A is transferred onto the transferred body. That is, the intermediate transfer medium also serves as a thermal transfer image receiving sheet. Further, after the heat transfer image is formed on the receiving layer 2A, the receiving layer 2A on which the heat transfer image is formed is transferred onto the transferred body to provide the receiving layer 2A on which the heat transfer image is formed. Obtain the printed matter (not shown). In the intermediate transfer medium 400 of the form shown in FIG. 5, a transfer layer 10A is provided on the base material 401, and the transfer layer 10A may be referred to as a release layer 410 (sometimes referred to as a protective layer) from the base material 401 side. Yes), the receiving layer 2A exhibits a laminated structure provided in this order.

As shown in FIG. 1, in the thermal transfer sheet 100 of one embodiment, the receiving layer 2 is located closest to the base material 1 among the layers constituting the transfer layer 10, and the transfer layer 10 is placed on the transferred body. By transferring, the receiving layer 2 can be positioned on the outermost surface. That is, by transferring the transfer layer 10 onto the transferred body 301, as shown in FIG. 3, the thermal transfer image receiving sheet 200 in which the receiving layer 2 is located on the outermost surface can be manufactured. Then, the manufactured thermal transfer image receiving sheet 200 is combined with, for example, a thermal transfer sheet having a dye layer (not shown), and the dye contained in the dye layer is transferred to the receiving layer 2 of the thermal transfer image receiving sheet 200. , The heat transfer image 50 (see FIG. 4C) can be formed on the receiving layer 2.

That is, from the viewpoint that the receiving layer can be transferred, the thermal transfer sheet 100 (see FIGS. 1 and 2) and the intermediate transfer medium 400 (see FIG. 5) of one embodiment are common, but at the transfer interface of the transfer layer 10. Whether or not the receiving layer 2 is located is an essential condition, that is, it is an essential condition that the receiving layer 2 is located closest to the substrate among the layers constituting the transfer layer 10. The thermal transfer sheet 100 and the intermediate transfer medium 400 of one embodiment are different in terms of whether or not they are used. In the field of intermediate transfer medium, a plurality of layers including a receptive layer and capable of being transferred from a substrate may be collectively referred to as a “transfer layer”, but as described above, in one embodiment. The "transfer layer" referred to in the thermal transfer sheet and the "transfer layer" in the field of the intermediate transfer medium are whether or not it is an essential condition that the receiving layer 2 is located at the transfer interface of the transfer layer 10. Is clearly different. Hereinafter, each configuration of the thermal transfer sheet 100 of one embodiment will be specifically described.

(Base material)
The base material 1 is a transfer layer 10 provided on one surface of the base material, or an arbitrary layer provided between the base material 1 and the transfer layer 10 (for example, an arbitrary release layer described later). In addition, an arbitrary layer (for example, a back layer) provided on the other surface of the base material 1 is held. The material of the base material 1 is not particularly limited, but a material that can withstand the heat applied when the transfer layer 10 is transferred and has mechanical properties that do not hinder handling is preferable. Examples of such a base material 1 include polyesters such as polyethylene terephthalate and polyethylene naphthalate, polyarylate, polycarbonate, polyurethane, polyimide, polyetherimide, cellulose derivatives, polyethylene, ethylene-vinyl acetate copolymer, polypropylene, and polystyrene. , Acrylic, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl butyral, nylon, polyether ether ketone, polysulfone, polyether sulfone, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, polyvinyl fluoride, tetrafluoroethylene Examples thereof include various plastic films or sheets such as -ethylene copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polychlorotrifluoroethylene, and polyvinylidene fluoride. Each of these materials can be used alone, but may be used as a laminate in combination with other materials. The thickness of the base material 1 can be appropriately set according to the material so that its strength and heat resistance are appropriate, preferably in the range of 0.5 μm or more and 50 μm or less, more preferably in the range of 1 μm or more and 20 μm or less. It is more preferably in the range of 1 μm or more and 10 μm or less.

(Transfer layer)
As shown in FIG. 1, a transfer layer 10 is provided on the base material 1. The transfer layer 10 is provided so as to be removable from the base material 1, and is a layer that is transferred (transferred) onto the transferred body 301 by thermal transfer (see FIG. 3). As shown in FIG. 1, the transfer layer 10 has a laminated structure in which the receiving layer 2 and the adhesive layer 4 are laminated in this order from the base material 1 side. The receiving layer 2 is located closest to the base material 1 among the layers constituting the transfer layer 10, and the adhesive layer 4 is located farthest from the base material 1 among the layers constituting the transfer layer 10. doing. This is because the receiving layer 2 is positioned on the outermost surface of the thermal transfer image receiving sheet 200 (see FIG. 3) produced by transferring the transfer layer 10 including the receiving layer 2 onto the transferred body 301, and the adhesive layer is also formed. This is because the transfer body 301 and the transfer layer 10 are adhered to each other according to 4. In the illustrated form, the receiving layer 2 and the adhesive layer 4 are in direct contact with each other, but an arbitrary layer may be provided between the receiving layer 2 and the adhesive layer 4.

The thermal transfer sheet 100 of one embodiment is characterized in that the contact angle of oleic acid on the surface of the transfer layer 10 on the substrate 1 side is 30 ° or less. In other words, the contact angle of oleic acid on the surface of the receiving layer 2 located at the peeling interface of the transfer layer 10 is 30 ° or less. Hereinafter, the surface of the transfer layer 10 on the substrate 1 side may be referred to as the surface of the receiving layer 2. According to the thermal transfer sheet 100 of one embodiment having this feature, the thermal transfer image receiving sheet 200 having good adhesion to the protective film 150 (see FIG. 4D) described later can be manufactured (see FIG. 4B). .. Specifically, by defining the contact angle of oleic acid on the surface of the receiving layer 2 to be 30 ° or less, the adhesion between the receiving layer 2 and the protective film 150 can be improved. More specifically, the thermal transfer image sheet 200 of one embodiment is used to produce a thermal transfer image sheet 200 (see FIGS. 3 and 4B), and a thermal transfer image is formed on the receiving layer 2 of the manufactured thermal transfer image sheet 200. 50 is formed (see FIG. 4C), and then the protective film 150 is laminated on the receiving layer 2 on which the heat transfer image 50 is formed, and the receiving layer 2 and the protective film 150 are brought into close contact with each other to form the printed matter 300. (See FIG. 4D), the adhesion between the receiving layer 2 and the protective film 150 can be improved. As a result, unintentional peeling of the protective film 150 from the manufactured printed matter 300 can be sufficiently suppressed.

In the thermal transfer sheet 100 having the above configuration, the contact angle of oleic acid on the surface of the receiving layer 2 is defined as 30 ° or less when the contact angle of oleic acid on the surface of the receiving layer 2 is larger than 30 °. This is because the adhesion with the protective film 150 cannot be sufficiently satisfied.

In the more preferable form of the thermal transfer sheet 100, the contact angle of oleic acid in the receiving layer 2 is 24 or less, particularly 20 or less. According to the more preferred form of the thermal transfer sheet 100, the thermal transfer image receiving sheet 200 having better adhesion to the protective film 150 can be manufactured.

(Measurement method of contact angle)
As for the contact angle of oleic acid on the surface of the receiving layer as described in the present specification, oleic acid is placed in a glass syringe by a method conforming to JIS-R-3257 (droplet method), and Teflon (registered trademark) is attached to the tip thereof. It is a value when an oleic acid is dropped on the evaluation surface (the surface of the receiving layer) with a coated needle attached, and the contact angle thereof is measured using a contact angle meter (DropMaster300 Kyowa Interface Science Co., Ltd.). The dropping amount of oleic acid is 1 μL, and the measurement temperature is 25 ° C.

(Receptive layer)
The receiving layer 2 in which the contact angle of oleic acid satisfies the above relationship contains a binder resin and an additive such as a mold release agent added as needed. The contact angle on the surface of the receiving layer 2 depends on the type, physical characteristics, and content of the binder resin contained in the receiving layer 2, and further, the addition of a mold release agent or the like contained together with the binder resin as necessary. Although it varies depending on the type of material and the content, the binder resin contained in the receiving layer 2 and the type, physical properties, and content of the additive added as needed of the receiving layer 2 do not matter. The adhesion with the protective film 150 can be improved only by satisfying the condition that the contact angle of oleic acid on the surface is 30 ° or less. Therefore, the receiving layer 2 is not limited to other conditions as long as the condition that the contact angle of oleic acid on the surface is 30 ° or less is satisfied.

Therefore, in forming the receiving layer 2, various binder resins and additives may be appropriately selected so that the contact angle of oleic acid on the surface of the receiving layer 2 is 30 ° or less. Hereinafter, the binder resin contained in the receiving layer 2 and the release agent will be described with reference to an example.

Examples of the binder resin contained in the receiving layer 2 include a polyolefin resin such as polypropylene, a halogenated resin such as polyvinyl chloride or polyvinylidene chloride, polyvinyl acetate, a vinyl chloride-vinyl acetate copolymer, and ethylene. -Vinyl acetate copolymer or vinyl resin such as polyacrylic acid ester, polyester resin such as polyethylene terephthalate or polybutylene terephthalate, polystyrene resin, polyamide resin, olefin such as ethylene or propylene, and other vinyl polymers. Examples thereof include polymer, cellulose-based resin such as ionomer or cellulose diastase, polycarbonate, acrylic resin, polyvinylpyrrolidone resin, polyvinyl alcohol resin, gelatin and the like. The receiving layer 2 may contain one type as a binder resin, or may contain two or more types.

Conventionally known mold release agents include, for example, solid waxes such as polyethylene wax, amide wax, and Teflon (registered trademark) powder, fluorine-based or phosphate ester-based surfactants, silicone oils, reactive silicone oils, and curable molds. Examples thereof include various modified silicone oils such as silicone oils and various silicone resins.

A thermal transfer image 50 is formed on the receiving layer 2 by using a thermal transfer sheet having a dye layer described later. Therefore, in forming the heat transfer image 50, it is preferable that the receptive layer 2 and the dye layer have good releasability. Considering this point, it is preferable that the receiving layer 2 having an oleic acid contact angle of 30 ° or less on its surface contains a release agent. In particular, it is more preferable that the receiving layer 2 contains a silicone oil having excellent releasability from the dye layer. The content of the silicone oil is not particularly limited and may be appropriately set in relation to the contact angle of oleic acid on the surface of the receiving layer 2, but the content of the silicone oil with respect to the total mass of the receiving layer 2 is 0.5 mass. It is preferably in the range of% or more and 25% by mass or less, more preferably in the range of 0.5% by mass or more and 15% by mass or less, and further preferably in the range of 0.5% by mass or more and 4.5% by mass or less. By setting the receiving layer 2 containing silicone oil in the above preferable range, it is possible to further improve the releasability between the receiving layer 2 and the dye layer when forming a heat transfer image on the receiving layer 2. ..

When the receiving layer 2 contains silicone oil as a release agent, the contact angle of oleic acid on the surface of the receiving layer 2 tends to increase as the content of the silicone oil increases. Therefore, in this case, the content of the silicone oil may be adjusted, or a binder resin capable of reducing the contact angle of the receiving layer 2 may be used as the binder resin. Examples of such a binder resin include a cellulosic resin.

Further, the smoothness of the surface of the receiving layer 2 can be adjusted so that the contact angle of oleic acid on the surface of the receiving layer 2 is 30 ° or less.

The method for forming the receiving layer 2 is also not particularly limited. For example, a coating liquid for a receiving layer in which an additive such as a binder resin and a release agent added as needed is dispersed or dissolved in an appropriate solvent. Is prepared, and this coating liquid can be applied and dried on an arbitrary layer provided on the base material 1 or on the base material 1 and not forming the transfer layer 10. Examples of the coating method include a gravure printing method, a screen printing method, and a reverse coating method using a gravure plate. Further, other coating methods can also be used. This also applies to the application method of various coating liquids described later. The thickness of the receiving layer 2 is not particularly limited, but is preferably in the range of 0.1 μm or more and 10 μm or less.

(Adhesive layer)
An adhesive layer 4 is provided on the receiving layer 2. The adhesive layer 4 constitutes the transfer layer 10, and is a layer that is in direct contact with the transfer body 301 when the transfer layer 10 is transferred onto the transfer body 301.

The adhesive layer 4 contains a component having adhesiveness to the transferred body 301. Examples of the adhesive component include polyolefin resins such as urethane resins and α-olefin-maleic anhydride resins, polyester resins, acrylic resins, epoxy resins, urea resins, melamine resins, and phenol resins. Examples thereof include resins, vinyl acetate-based resins, vinyl chloride-vinyl acetate-based copolymers, and cyanoacrylate-based resins. Further, those obtained by curing these resins with a curing agent can also be used. As the curing agent, an isocyanate compound is generally used, but an aliphatic amine, a cyclic aliphatic amine, an aromatic amine, an acid anhydride and the like can be used.

The method for forming the adhesive layer 4 is not particularly limited, and for example, a coating liquid for an adhesive layer is prepared by dispersing or dissolving an adhesive component and various additives added as needed in an appropriate solvent. Then, this coating liquid can be applied and dried on an arbitrary layer (for example, a concealing layer described later) provided on the receiving layer 2 or on the receiving layer 2 and constituting the transfer layer 10. The thickness of the adhesive layer is preferably in the range of 0.5 μm or more and 10 μm or less, and more preferably in the range of 0.8 μm or more and 2.0 μm or less.

(Functional layer)
Further, various functional layers may be provided between the receiving layer 2 and the adhesive layer 4 (not shown). The functional layer has an arbitrary configuration in the thermal transfer sheet 100 of one embodiment. The functional layer as an example is a layer having a concealing property.

The concealing layer contains a binder resin and a colorant. Examples of the binder resin include polyester resin, urethane resin, epoxy resin, phenol resin, acrylic resin, vinyl chloride-vinyl acetate-based copolymer and the like. Examples of the colorant include known colorants such as titanium oxide, zinc oxide, carbon black, iron oxide, iron yellow, ultramarine blue, hologram powder, aluminum powder, metallic pigment, and pearl pigment. The concealing layer may contain one kind of these binder resins, or may contain two or more kinds of these binder resins. The same applies to colorants.

The method for forming the concealing layer, which is an example of the functional layer, is not particularly limited. For example, the concealing layer in which the binder resin, the colorant, and the additive added as needed are dispersed or dissolved in an appropriate solvent. A coating liquid for use can be prepared, and the coating liquid can be applied and dried on the receiving layer 2 to form the coating liquid. The thickness of the concealing layer is preferably in the range of 0.1 μm or more and 5 μm or less.

In the above, the concealment layer has been described as an example of the functional layer, but other layers may be used as the functional layer.

(Release layer)
Further, a release layer (not shown) may be provided between the base material 1 and the transfer layer 10. The release layer is an arbitrary configuration in the thermal transfer sheet 100 of one embodiment, and is a layer that does not constitute the transfer layer 10. That is, it is a layer that remains on the substrate 1 side when the transfer layer 10 is transferred onto the transferred body 301. By providing a release layer between the base material 1 and the transfer layer 10, it is possible to improve the transferability of the transfer layer 10 when the transfer layer 10 is transferred onto the transferred body 301.

Examples of the binder resin contained in the release layer include waxes, silicone wax, silicone resin, silicone-modified resin, fluororesin, fluorine-modified resin, polyvinyl alcohol, acrylic resin, thermosetting epoxy-amino copolymer, and the like. And thermosetting alkyd-amino copolymer (thermosetting aminoalkyd resin) and the like. Further, the release layer may be made of one kind of resin or may be made of two or more kinds of resins. Further, the release layer may be formed by using a cross-linking agent such as an isocyanate compound, a tin catalyst, an aluminum catalyst or the like in addition to the release resin. The thickness of the release layer is generally in the range of 0.2 μm or more and 5 μm or less. As a method for forming the release layer, a coating solution for a release layer in which the above resin is dispersed or dissolved in an appropriate solvent is prepared, and this coating solution is applied and dried on the base material 1 to form the release layer. can.

(Back layer)
Further, a back layer (not shown) may be provided on the surface of the base material 1 opposite to the surface on which the transfer layer 10 is provided. The back layer has an arbitrary configuration in the thermal transfer sheet 100 of one embodiment.

The material of the back layer is not limited, and for example, a cellulose resin such as cellulose acetate butyrate or cellulose acetate propionate, a polyvinyl acetal resin such as polyvinyl butyral or polyvinyl acetacetal, polymethyl methacrylate, ethyl polyacrylate, etc. Examples thereof include acrylic resins such as polyacrylamide and acrylonitrile-styrene copolymer, polyamide resins, polyamideimide resins, polyester resins, polyurethane resins, silicone-modified or fluorine-modified urethanes, which are natural or synthetic resins, or a mixture thereof.

Further, the back layer may contain a solid or liquid lubricant. Examples of the lubricant include various waxes such as polyethylene wax and paraffin wax, higher aliphatic alcohols, organopolysiloxanes, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, and fluorine. Examples thereof include based surfactants, organic carboxylic acids and derivatives thereof, metal soaps, fluorine-based resins, silicone-based resins, fine particles of inorganic compounds such as talc and silica. The content of the lubricant with respect to the total mass of the back layer is preferably in the range of 5% by mass or more and 50% by mass or less, and more preferably in the range of 10% by mass or more and 40% by mass or less.

The method for forming the back layer is not particularly limited, and a coating liquid for the back layer is prepared by dispersing or dissolving a resin, a lubricant added as needed, or the like in an appropriate solvent, and this coating liquid is used as a base. It can be formed by applying and drying on the material 1. The thickness of the back layer is preferably in the range of 1 μm or more and 10 μm or less.

Further, as shown in FIG. 2, the transfer layer 10 and the dye layer 5 described above can be sequentially provided on one surface of the base material 1 (on the same surface of the base material 1). Further, in the thermal transfer sheet 100 having the form shown in FIG. 2, the transfer layer 10, the dye layer 5, and the protective layer (not shown) can be sequentially provided on one surface of the base material 1. Further, instead of the protective layer, or together with it, a dye layer containing a pigment (not shown), an arbitrary spot color panel composed of a hologram layer (not shown), or the like can be provided in a surface-sequential manner. The order of these layers is not particularly limited.

According to the thermal transfer sheet 100 further including the dye layer 5, for example, the formation of the thermal transfer image sheet 200 (see FIGS. 3 and 4B) and the thermal transfer image of the manufactured thermal transfer image sheet 200 to the receiving layer 2 The formation of 50 (see FIG. 4C) can be performed using one thermal transfer sheet. Specifically, by using the thermal transfer sheet 100 in the form shown in FIG. 2 and transferring the transfer layer 10 onto the transferred body, the thermal transfer image receiving sheet 200 provided with the transfer layer 10 on the transferred body 301 can be obtained. Can be manufactured. Further, the thermal transfer image 50 can be formed by transferring the dye contained in the dye layer 5 of the thermal transfer sheet 100 in the form shown in FIG. 2 onto the receiving layer 2 located on the outermost surface of the thermal transfer image receiving sheet 200.

(Dye layer)
As an example, the dye layer 5 contains a sublimation dye as a dye and a binder resin. The dye layer 5 may form only one layer of an appropriately selected color when the desired image is monocolor, or when the desired image is a full-color image, a yellow sublimating dye, A plurality of dye layers containing sublimation dyes having different hues such as magenta sublimation dye and cyan sublimation dye may be repeatedly formed on the same surface of the base material 1 in a surface-sequential manner. The dye layer 5 is not limited to those described below, and a dye layer conventionally known in the field of thermal transfer sheets can be applied as it is.

"Sublimation dye"
The sublimation dye is not particularly limited, but a dye having a sufficient coloring concentration and not discoloring or fading due to light, heat, temperature or the like is preferable. Examples of such sublimative dyes include diarylmethane dyes, triarylmethane dyes, thiazole dyes, merocyanine dyes, pyrazolone dyes, methine dyes, indian aniline dyes, pyrazolomethine dyes, acetophenone azomethine, and pyrazolo. Azomethine dyes such as azomethine, imidazole azomethine, imidazole azomethine, pyridone azomethine, xanthene dyes, oxazine dyes, cyanostyrene dyes such as dicyanostyrene and tricyanostyrene, thiazine dyes, azine dyes, acridine dyes, Azo dyes such as benzene azo dyes, pyridone azo, thiophen azo, isothiazole azo, pyrrol azo, pyrazole azo, imidazole azo, thiadiazol azo, triazol azo, disazo Examples thereof include dyes, naphthoquinone dyes, anthraquinone dyes, and quinophthalone dyes. Specifically, red dyes such as MSRedG (Mitsui Toatsu Chemical Co., Ltd.), Macrolex Red Violet R (Bayer), CeresRed 7B (Bayer), Samaroon Red F3BS (Mitsubishi Chemical Corporation), Holon Brilliant Yellow Yellow dyes such as 6GL (Clariant), PTY-52 (Mitsubishi Chemical Corporation), Macrolex Yellow 6G (Bayer), Kayaset (registered trademark) Blue 714 (Nippon Kayaku Co., Ltd.), Holon Brilliant Blue S -R (Clariant), MS Blue 100 (Mitsui Toatsu Kagaku Co., Ltd.), C.I. I. Examples thereof include blue dyes such as Solvent Blue 63.

The content of the sublimable dye is preferably in the range of 50% by mass or more and 400% by mass, and more preferably in the range of 80% by mass or more and 300% by mass with respect to the total solid content of the binder resin described later. By setting the content of the sublimation dye in the above range, it is possible to further improve the density of the image formed by the dye layer and the storage stability of the thermal transfer sheet.

"Binder resin"
The binder resin contained in the dye layer and for supporting the sublimation dye is not particularly limited, and a binder resin conventionally known in the field of the dye layer can be appropriately selected and used. Examples of the binder resin of the dye layer 5 include cellulose-based resins such as ethyl cellulose resin, hydroxyethyl cellulose resin, ethyl hydroxy cellulose resin, methyl cellulose resin, and cellulose acetate resin, polyvinyl alcohol resin, polyvinyl acetate resin, polyvinyl butyral resin, and polyvinyl acet. Examples thereof include acetal resins, vinyl resins such as polyvinylpyrrolidone, acrylic resins such as poly (meth) acrylate and poly (meth) acrylamide, polyurethane resins, polyamide resins, and polyester resins.

The content of the binder resin is not particularly limited, but the content of the binder resin with respect to the total mass of the dye layer 5 is preferably 20% by mass or more. By setting the content of the binder resin with respect to the total mass of the dye layer 5 to 20% by mass or more, the sublimable dye can be sufficiently retained in the dye layer 5, and as a result, the storage stability can be improved. The upper limit of the content of the binder resin is not particularly limited, and can be appropriately set according to the content of the sublimation dye or any additive.

Further, the dye layer 5 may contain additives such as inorganic particles and organic fine particles. Examples of the inorganic particles include talc, carbon black, aluminum, molybdenum disulfide and the like, and examples of the organic fine particles include polyethylene wax and silicone resin fine particles. The dye layer 5 may contain a release agent. Further, examples of the release agent include modified or unmodified silicone oil (including what is called a silicone resin), phosphoric acid ester, fatty acid ester and the like.

The method for forming the dye layer 5 is not particularly limited, and a coating liquid for a dye layer in which a binder resin, a sublimating dye, an additive added as necessary, and a release agent are dispersed or dissolved in an appropriate solvent. Can be prepared, and this coating liquid can be applied and dried on the base material 1 or the dye primer layer described later. The thickness of the dye layer is generally in the range of 0.2 μm or more and 2.0 μm or less.

(Dye primer layer)
Further, a dye primer layer (not shown) may be provided between the base material 1 and the dye layer 5. The components contained in the dye primer layer are not particularly limited, and for example, polyester resin, polyvinylpyrrolidone resin, polyvinyl alcohol resin, hydroxyethyl cellulose, polyacrylic acid ester resin, polyvinyl acetate resin, polyurethane resin, acrylic-styrene. Polypolymers, polyacrylamide resins, polyamide resins, polyether resins, polystyrene resins, polyethylene resins, polypropylene resins, polyvinyl chloride resins, polyvinyl acetal resins such as polyvinyl acetacetal and polyvinyl butyral, etc. Can be mentioned.

Further, the dye primer layer may contain colloidal inorganic pigment ultrafine particles. Examples of the colloidal inorganic pigment ultrafine particles include silica (coloidal silica), alumina or alumina hydrate (alumina sol, colloidal alumina, cationic aluminum oxide or its hydrate, pseudo-boehmite, etc.), aluminum silicate, and silicic acid. Examples thereof include magnesium, magnesium carbonate, magnesium oxide, and titanium oxide. In particular, colloidal silica and alumina sol are preferably used. The size of these colloidal inorganic pigment ultrafine particles is preferably 100 nm or less, preferably 50 nm or less in terms of primary average particle size.

The method for forming the dye primer layer is also not particularly limited, and a coating liquid for the dye primer layer is prepared by dispersing or dissolving the components exemplified above and additives added as necessary in an appropriate solvent. This coating liquid can be formed by applying and drying on the substrate 1. The thickness of the dye primer layer is not particularly limited, but is usually in the range of 0.02 μm or more and 1 μm or less.

In the above description, the case where the transfer layer 10 has a laminated structure in which the receiving layer 2 and the adhesive layer 4 are laminated in this order from the base material 1 side has been mainly described, but the transfer is performed on the transferred body 301 side. When measures are taken to improve the adhesion to the layer 10, the transfer layer 10 may have a single-layer structure consisting of only the receiving layer 2. Even in this case, the contact angle of oleic acid on the surface of the transfer layer 10 on the substrate 1 side, in other words, the contact angle of oleic acid on the surface of the receiving layer 2 is 30 ° or less.

<< Manufacturing method of thermal transfer image receiving sheet >>
Next, a method for manufacturing a heat transfer image receiving sheet according to the embodiment of the present disclosure (hereinafter, a method for manufacturing a heat transfer image receiving sheet according to one embodiment) will be described. In the method for producing a heat transfer image receiving sheet of one embodiment, a heat transfer sheet 100 having a transfer layer 10 (see FIGS. 1, 2 (b) and 4 (a)) and a transfer body 301 are combined to form a transfer body. The step of transferring the transfer layer 10 onto the 301 is included. The method for manufacturing the thermal transfer image receiving sheet of one embodiment is characterized in that the thermal transfer sheet 100 having the transfer layer 10 is the thermal transfer sheet 100 of the above embodiment.

According to the method for producing a heat transfer image receiving sheet of one embodiment having the above characteristics, the heat transfer sheet 100 having a receiving layer 2 having an oleic acid contact angle of 30 ° or less on the surface of the heat transfer sheet 100 used in the manufacturing method is provided. Therefore, a heat transfer image receiving sheet having good adhesion to the protective film 150 can be manufactured.

Examples of the transferee 301 include plain paper, woodfree paper, tracing paper, plastic film, vinyl chloride, vinyl chloride-vinyl acetate copolymer, plastic cards mainly composed of polycarbonate and the like. Further, as the transferred body 301, a body having a predetermined image can also be used. Further, as the transferred body 301, the base material 1 described in the thermal transfer sheet 100 of the above embodiment can be appropriately selected and used.

For the transfer of the transfer layer 10 onto the transfer target 301, for example, a method using a heating device using a thermal head or the like, a hot stamping method, a heat roll method, or the like can be used. Further, other methods can also be used.

<< Manufacturing method of printed matter >>
Next, a method for manufacturing a printed matter according to the embodiment of the present disclosure (hereinafter, referred to as a method for manufacturing a printed matter according to an embodiment) will be described. The method for producing a printed matter of one embodiment includes a thermal transfer sheet 100 provided with a transfer layer 10 in which a receiving layer 2 and an adhesive layer 4 are laminated in this order on one surface of a base material 1, and a transfer to be performed. Thermal transfer obtained by superimposing the body 301 (see FIG. 4A) and transferring the transfer layer 10 of the thermal transfer sheet 100 onto the transferred body 301 to transfer the transfer layer 10 onto the transferred body 301. A step of manufacturing the image receiving sheet 200 (see FIG. 4B), a step of forming a thermal transfer image 50 on the receiving layer 2 of the manufactured thermal transfer image receiving sheet 200 (see FIG. 4C), and a thermal transfer image. A step of laminating the protective film 150 on the heat transfer image receiving sheet 200 on which 50 is formed (see FIG. 4D) is included. Through this step, a printed matter in which the protective film 150 is provided on the heat transfer image receiving sheet 200 on which the heat transfer image 50 is formed is manufactured.

Here, the method for producing a printed matter of one embodiment is characterized in that the thermal transfer sheet 100 used for producing the thermal transfer image receiving sheet 200 is the thermal transfer sheet 100 described above. Specifically, in the production of the printed matter, a thermal transfer sheet 100 having a receiving layer 2 having a contact angle of oleic acid of 30 ° or less on the surface thereof is used. According to the method for producing a printed matter of one embodiment having this feature, when the protective film 150 is laminated on the heat transfer image receiving sheet 200 on which the heat transfer image 50 is formed, in other words, the heat transfer image 50 is formed. When the protective film 150 is laminated on the receiving layer 2, the adhesion between the receiving layer 2 and the protective layer sheet 150 can be improved. As a result, it is possible to manufacture the printed matter 300 in which the protective film 150 is provided with good adhesion on the thermal transfer image receiving sheet 200 on which the thermal transfer image 50 is formed.

As the thermal transfer sheet used for forming the thermal transfer image 50, a conventionally known thermal transfer sheet provided with a dye layer can be appropriately selected and used. Further, using a thermal transfer sheet 100 (see FIG. 2) in which a transfer layer 10 and a dye layer 5 are sequentially provided on the same surface of the base material 1, a thermal transfer image receiving sheet can be manufactured by using one thermal transfer sheet 100. It is also possible to form the heat transfer image 50 on the receiving layer 2.

The protective film 150 laminated on the heat transfer image sheet 200 on which the heat transfer image 50 is formed is not particularly limited, and the heat transfer image 50 is produced by the action of the receiving layer 2 of the heat transfer sheet 100 for producing the heat transfer image sheet 200. The adhesion between the formed receiving layer 2 and the protective film 150 can be improved. In the protective film 150 in a preferred form, the contact angle of oleic acid on the surface on the side in contact with the receiving layer 2 on which the heat transfer image 50 is formed is 35 ° or less, more preferably 25 ° or less. According to the method for producing a printed matter of one embodiment using the preferred protective film 150, the adhesion between the receiving layer 2 on which the heat transfer image 50 is formed and the protective film 150 can be further improved.

The protective film 150 may exhibit a single-layer structure composed of only one substrate, or may exhibit a laminated structure in which a plurality of substrates are laminated.

The protective film 150 may be laminated so as to cover a part of the heat transfer image 50, or may cover the entire surface of the heat transfer image 50 or the receiving layer 2.

<< Combination of thermal transfer sheet and protective film >>
Next, a combination of the thermal transfer sheet and the protective film according to the embodiment of the present disclosure (hereinafter, referred to as a combination of one embodiment) will be described. The combination of one embodiment is a combination of a thermal transfer sheet and a protective film, in which the thermal transfer sheet 100 is the thermal transfer sheet 100 of the above embodiment, and the protective film 150 has an oleic acid contact angle of 35 on its surface. It is characterized by being a protective film of ° or less.

According to the combination of one embodiment, it is possible to produce a printed matter 300 having good adhesion between the receiving layer 2 of the thermal transfer image receiving sheet 200 and the protective film 150. As the thermal transfer sheet 100 and the protective film 150 used in the combination of one embodiment, the thermal transfer sheet 100 and the protective film 150 of various forms described above can be appropriately selected and used, and detailed description thereof will be given here. Is omitted.

The present invention will be described below with reference to Examples and Comparative Examples. Unless otherwise specified, the "part" in the text is based on mass.

(Preparation of thermal transfer sheet 1)
A polyethylene terephthalate film having a thickness of 5 μm is used as a base material, and a coating liquid 1 for a receiving layer having the following composition is applied and dried on one surface of the base material so that the thickness at the time of drying is 1 μm. A receptive layer was formed. Next, an adhesive layer coating liquid having the following composition was applied and dried on the receiving layer so that the thickness at the time of drying was 1 μm to form an adhesive layer. Further, one of the base materials is formed by applying and drying a coating liquid for a back layer having the following composition on the other surface of the base material so that the thickness at the time of drying is 1 μm. A transfer layer was provided on the surface of the substrate in which a receiving layer and an adhesive layer were laminated in this order from the substrate side, and a thermal transfer sheet 1 having a back surface layer provided on the other surface of the substrate was prepared.

<Coating liquid for receiving layer 1>
・ 20 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

<Coating liquid for adhesive layer>
・ 24 parts of acrylic resin (Dianar (registered trademark) BR-87 Mitsubishi Chemical Corporation)
-Vinyl chloride-vinyl acetate copolymer 6 parts (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
・ 35 parts of methyl ethyl ketone ・ 35 parts of toluene

<Coating liquid for back layer 1>
-Polyvinyl butyral resin 1.8 parts (Eslek (registered trademark) BX-1 Sekisui Chemical Co., Ltd.)
-Polyisocyanate curing agent 5.5 parts (Bernock (registered trademark) D750 DIC Corporation)
・ 1.6 parts of phosphate ester (Plysurf (registered trademark) A208N Daiichi Kogyo Seiyaku Co., Ltd.)
・ Talc 0.35 copies (Micro Ace (registered trademark) P-3 Japan Talc Co., Ltd.)
・ Polyethylene wax 0.3 parts ・ Methyl ethyl ketone 18.5 parts ・ Toluene 18.5 parts

(Creation of thermal transfer sheet 2)
A thermal transfer sheet 2 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 2 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 2>
19.88 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 0.072 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
-Organic modified silicone 0.048 parts (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 3)
A thermal transfer sheet 3 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 3 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 3>
19.5 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 0.3 part (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 0.2 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 4)
A thermal transfer sheet 4 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 4 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 4>
19 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 0.6 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 0.4 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 5)
A thermal transfer sheet 5 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 5 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 5>
18.4 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 0.96 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
-Organic modified silicone 0.64 parts (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 6)
A thermal transfer sheet 6 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 6 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 6>
・ 16.8 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 1.92 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 1.28 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ Cellulose resin 1 part (CAB321-0.1 Eastman Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 7)
A thermal transfer sheet 7 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 7 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 7>
・ 16.8 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 1.92 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 1.28 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ Cellulose resin 5 parts (CAB321-0.1 Eastman Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 8)
A thermal transfer sheet 8 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 8 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 8>
・ 16.8 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 1.92 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 1.28 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Preparation of thermal transfer sheet 9)
A thermal transfer sheet 9 was prepared in the same manner as in Example 1 except that the coating liquid 1 for the receiving layer was changed to the coating liquid 9 for the receiving layer having the following composition to form the receiving layer.

<Coating liquid for receiving layer 9>
・ 16.8 parts of vinyl chloride-vinyl acetate copolymer (Solvine (registered trademark) CNL Nisshin Kagaku Kogyo Co., Ltd.)
-Organic modified silicone 1.92 parts (X-24-510T Shin-Etsu Chemical Co., Ltd.)
・ 1.28 parts of organically modified silicone (KF-352A Shin-Etsu Chemical Co., Ltd.)
-Cellulose resin 0.1 part (CAB321-0.1 Eastman Chemical Co., Ltd.)
・ 40 parts of methyl ethyl ketone ・ 40 parts of toluene

(Creation of thermal transfer sheet with dye layer)
A polyethylene terephthalate film having a thickness of 5 μm was used as a base material, and the coating liquid 1 for the back layer having the above composition was applied and dried so as to have a thickness of 1 μm when dried to form a back layer. Next, a coating liquid for a dye primer layer having the following composition was applied and dried on the other surface of the base material so that the thickness at the time of drying was 0.15 μm to form a dye primer layer. On this dye primer layer, a coating liquid for a yellow, magenta, and cyan dye layer having the following composition is applied in a surface-sequential manner so that the thickness at the time of drying is 0.7 μm, and the yellow dye layer and the magenta dye layer are coated. , A thermal transfer sheet having a dye layer was prepared by forming a cyan dye layer.

<Coating liquid for dye primer layer>
・ Colloidal alumina (solid content 10.5%) 3.5 parts (alumina sol 200 Nissan Chemical Industries, Ltd.)
-Vinyl acetate-vinylpyrrolidone copolymer 1.5 parts (PVP / VA E-335 ISP Japan Co., Ltd.)
・ Water 47.5 parts ・ Isopropyl alcohol 47.5 parts

<Coating liquid for yellow dye layer>
・ Solvent Yellow 93 2.5 parts ・ Disperse Yellow 201 2.5 parts ・ Polyvinyl acetal acetal resin 4 parts (Eslek (registered trademark) KS-5 Sekisui Chemical Co., Ltd.)
・ Organic modified silicone oil 0.04 parts ・ Toluene 50 parts ・ Methyl ethyl ketone 50 parts

<Coating liquid for magenta dye layer>
・ Disperse thread 60 3 parts ・ Disperse violet 26 3 parts ・ Polyvinyl acetal acetal resin 5 parts (Eslek (registered trademark) KS-5 Sekisui Chemical Co., Ltd.)
・ Organic modified silicone oil 0.05 parts ・ Toluene 50 parts ・ Methyl ethyl ketone 50 parts

<Cyan dye layer coating liquid>
・ Solvent Blue 63 3 parts ・ Disperse Blue 354 4 parts ・ Polyvinyl acetal acetal resin 5 parts (Eslek (registered trademark) KS-5 Sekisui Chemical Co., Ltd.)
・ Organic modified silicone oil 0.05 parts ・ Toluene 50 parts ・ Methyl ethyl ketone 50 parts

(Preparation of transfer target)
A card base material made of polycarbonate was prepared as a transfer material.

(Transfer of transfer layer (preparation of thermal transfer image receiving sheet))
The transferred body prepared above is combined with each thermal transfer sheet prepared above, and the transfer layer is transferred onto the transferred body under the conditions of 175/255 gradation (energy gradation) using the following printer 1. , Each thermal transfer image receiving sheet was obtained.

(Printer 1)
Thermal head: KEE-57-12GAN2-STA (Kyocera Corporation)
Average resistance of heating element: 3303 (Ω)
Main scanning direction Print density: 300 (dpi)
Sub-scanning direction print density: 300 (dpi)
Printing voltage: 16.2 (V)
Line period: 2.5 (msec./line)
Printing start temperature: 35 (° C)
Pulse duty ratio: 85 (%)
Printing start temperature: 29.0 (° C) to 36.0 (° C)
Distance from heat generation point to release plate: 4.5 (mm)
Transport speed: 84.6 (mm / sec.)
Printing pressure: 3.5 (kgf) to 4.0 (kgf)

(Measurement of contact angle)
The contact angle of oleic acid on the surface (surface of the receiving layer) of each heat transfer image receiving sheet prepared above was measured by the method described in the above-mentioned "Measuring method of contact angle of oleic acid". The measurement results are shown in Table 1. The thermal transfer image receiving sheet of the example of the thermal transfer image receiving sheet in which the contact angle of oleic acid was 30 ° or less was used, and the thermal transfer receiving sheet of the comparative example in which the contact angle of oleic acid was larger than 30 ° was used. Table 1 also shows the correspondence between the heat transfer image receiving sheets of each example and the comparative example and each heat transfer sheet used for manufacturing the heat transfer image receiving sheet.

(Formation of thermal transfer image)
The thermal transfer sheet having the dye layer prepared above is combined with the thermal transfer image receiving sheets of the examples and the comparative examples obtained above, and the thermal transfer sheets of the respective examples and the comparative examples are subjected to the width of 2 cm by the printer 2. A vertical stripe image (yellow image (RGB (255,255,0))) was printed.

(Printer 2)
Thermal head: KEE-57-12GAN2-STA (Kyocera Corporation)
Average resistance of heating element: 3303 (Ω)
Main scanning direction Print density: 300 (dpi)
Sub-scanning direction print density: 300 (dpi)
Printing voltage: 17.8 (V)
Line period: 3 (msec./line)
Printing start temperature: 35 (° C)
Pulse duty ratio: 85 (%)
Printing start temperature: 29.0 (° C) to 36.0 (° C)
Distance from heat generation point to release plate: 4.5 (mm)
Transport speed: 84.6 (mm / sec.)
Printing pressure: 3.5 (kgf) to 4.0 (kgf)

(Laminating protective film)
After forming a heat transfer image on the receiving layer of the heat transfer image receiving sheet of each example and the comparative example, a protective film having a polyester resin layer located on the outermost surface is received on the receiving layer on which the heat transfer image is formed. The layers were superposed so that the polyester resin layer was in contact with each other, and the temperature was 185 ° C. and the speed was 33 mm / sec. Under the conditions of the above, a protective film was heat-laminated on the receiving layer to produce printed matter of each Example and Comparative Example. The contact angle of oleic acid on the surface of the protective film (the surface of the polyester resin layer) was 28.7 °.

(Adhesion evaluation)
The peeling speed was 2 mm / sec. (Condition 1) and peeling speed 0.83 mm / sec. Under the condition of (Condition 2), the protective film was peeled off in the vertical direction, and the adhesion between the receiving layer and the protective film was evaluated based on the following evaluation criteria. The evaluation results are also shown in Table 1.

"Evaluation criteria"
A: In both condition 1 and condition 2, the protective film breaks.
B: Under condition 1, the protective film breaks, but under condition 2, the protective film does not break.
NG: Under both conditions 1 and 2, the protective film does not break and is easily peeled off from the receiving layer.

100 ... Thermal transfer sheet 1 ... Substrate 2, 2A ... Receptive layer 4 ... Adhesive layer 5 ... Dye layer 10, 10A ... Transfer layer 50 ... Thermal transfer image 150 ... Protective film 200 ... Thermal transfer image receiving sheet 300 ... Printed matter 301 ... Transferee 400 ... Intermediate transfer medium 401 ... Intermediate transfer medium base material 410 ... Release layer

Claims (3)

A thermal transfer sheet used in the manufacture of thermal transfer image receiving sheets.
A transfer layer in which a receiving layer and an adhesive layer are laminated in this order is provided on one surface of the base material.
Wherein Ri Der contact angle is 30 ° or less of oleic acid on the substrate surface of the transfer layer,
A thermal transfer sheet , wherein the receiving layer contains a silicone oil and a cellulosic resin. The thermal transfer sheet according to claim 1 , wherein the transfer layer and a dye layer containing a sublimation dye are sequentially provided on the same surface of the base material. It is a manufacturing method of printed matter,
A step of combining the thermal transfer sheet according to claim 1 or 2 with a transfer target and transferring the transfer layer onto the transfer target.
A step of forming a thermal transfer image on the transfer layer transferred onto the transfer target, and
The step of laminating a protective film on the formed image and
A method for producing a printed matter, which comprises.

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