JP2003145951A - Thermal transfer acceptive sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal transfer acceptive sheet in which a profile of a threaded part, a metal vapor-deposited layer part, a metal foil part or the like is not appeared as a latent image on a printed image part, but a good recorded image can be obtained, a waviness at winding is not present and a forgery preventing countermeasure which can easily be manufactured is performed. SOLUTION: The thermal transfer acceptive sheet comprises the image acceptive layer 2 provided on at least one surface of a support 1. The sheet further comprises a yarn-like thread 5 or a strip-like thread 5 in the support 1 in such a manner that the thickness of the support 1 is 3 times or more as large as the thickness of the diameter of the yarn-like thread 5 or the thickness of the strip-like thread 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium used for thermal transfer image recording using a thermal head. More specifically, in a thermal transfer receiving sheet (hereinafter also simply referred to as a receiving sheet) for a printer capable of forming a transfer image by transferring a sublimable dye or a heat-meltable ink by heat, a thermal transfer receiving sheet provided with anti-counterfeiting property. It is about the seat.

[0002]

2. Description of the Related Art In recent years, thermal transfer printers capable of printing clear full-color images have attracted attention. A sublimation thermal transfer printer is a dye ink sheet having a dye layer containing a dye that is transferred by sublimation or melt diffusion by heat, and a receiving sheet having an image receiving layer containing a dye-dyeable resin on one side of a support (sublimation thermal transfer receiving A sheet) is used to superpose the dye layer and the image receiving layer on each other, and the heat supplied from the thermal head or the like transfers the dye at a predetermined position of the dye layer onto the image receiving layer at a predetermined concentration to form an image. In addition, a melting heat transfer printer presses an ink sheet coated with ink that melts with heat and an ink receiving medium (melting heat transfer receiving sheet) with a platen, heats from the back of the ink sheet to melt the ink instantly, and forms an image. Transcribe and record.

With the development of thermal printers and the development of digital image processing technology, the images obtained have improved remarkably.
The thermal transfer recording system is expanding its market. Typical examples include printing and design proofing and output, image output of endoscopes and CT scans in the medical field, facial photographs and calendars in the amusement field, and ID in the ID field.
Widely used for output to cards and credit cards. Since the thermal transfer recording method can record variable information at high speed, it is expected to be used for applications such as commuter tickets, tickets, securities, betting tickets, lottery tickets, and tickets in the future. In particular, when the receiving sheet is used for various kinds of cash vouchers, etc., it is necessary to prevent alteration and forgery, and it is important that the authenticity of the recording sheet can be easily confirmed.

However, since the thermal transfer recording method can easily print a high-quality image as described above, there is a problem that forgery can be easily performed by using this system. Therefore, as a method for preventing forgery, there are methods such as fine printing on the receiving sheet, and provision of a watermark pattern or hologram, but there is a problem that there are many restrictions on the implementation from the viewpoint of manufacturing cost. Further, JP-A-6-219060 describes a method of providing an uneven layer containing a fluorescent whitening agent on a substrate. However, this method has a problem in that the thickness of the receiving layer provided on the uneven layer becomes non-uniform, and the image quality of the recorded image tends to deteriorate, and a special device is required to determine the authenticity.

As a support sheet whose authenticity can be confirmed, for example, Japanese Patent Application Laid-Open No. 11-91237 proposes a sheet in which cut colored film pieces or cut metal foil pieces are incorporated into paper. However, in this case, it is considered that it is difficult to confirm the authenticity because the cut-in pieces are randomly dispersed in the paper and have no regularity. Therefore, as a support, a support sheet that can easily visually check a regular mechanism for preventing forgery, a shape, and the like and is difficult to forge has been desired.

Further, Japanese Patent Application Laid-Open No. 10-315620 discloses a method of using a paper support in which a tape-shaped thread having a thermosensitive recording layer on a film is incorporated.
However, when this method is applied to a thermal transfer receiving sheet, the area where the thread is made rises slightly, so the smoothness is impaired (hereinafter referred to as "bounce"), and the thread contour latent image appears in the image around the thread contour. And the recording image quality tends to be deteriorated, and there is a problem that when the manufactured receiving sheet is wound up, corrugation occurs in the obtained roll.

[0007]

SUMMARY OF THE INVENTION According to the present invention, in a receiving sheet in which an image receiving layer is provided on a sheet-shaped support having a thread-shaped or band-shaped thread inside the support, a thread portion (a portion having a thread and a portion thereof) is provided. There is no deterioration in the recorded image quality due to the appearance of a sled contour latent image in the recorded image (in the vicinity), there is no ruggedness on the surface of the receiving sheet, and there is no waviness during winding. An object of the present invention is to provide a counterfeit-proof receiving sheet that is identifiable, difficult to forge, and easy to manufacture.

[0008]

The thermal transfer receiving sheet of the present invention is a thermal transfer receiving sheet having an image receiving layer on at least one surface of a support, wherein the support has a thread thread or a band thread, and The thickness of the body
It is characterized in that it is three times or more the diameter of the thread thread or the thickness of the band thread. In the thermal transfer receiving sheet of the present invention, the thickness of the support is preferably 40 to 300 μm. Further, the thermal transfer receiving sheet of the present invention has at least one paper core material layer, and a strip-shaped thread made of a synthetic resin film having a thread thread or a metal vapor deposition layer is incorporated into the paper core material layer. It is a thing. Also,
The thermal transfer receiving sheet of the present invention is a multi-layer substrate in which at least two or more substrates are laminated, and the laminated surface of the substrate,
A band-shaped thread having a metal vapor deposition layer or a metal foil layer is provided.

[0009]

1 is a sectional view of a receiving sheet according to one embodiment of the present invention. In the embodiment shown in FIG. 1, an image receiving layer 2 is provided on one surface of a support 1, and a paper core material 3 is used as the support 1. The paper core material 3 may have the thermoplastic resin layer 4 on the image receiving layer side, and the paper core material 3 may have the thermoplastic resin layer 4 ′ on the opposite side. The method for forming the thermoplastic resin layer is not limited, but coating, melt extrusion,
Alternatively, a thermoplastic resin film may be adhesively laminated.
Inside the paper core material 3, threads 5 (belt-shaped threads in FIG. 1)
Has been incorporated. It is also possible to incorporate one or more threads into the paper core material. It is also possible to use a band-shaped thread and a thread-shaped thread together.

The total thickness of the support must be at least 3 times the diameter of the thread threads or the thickness of the strip threads, preferably 5 to 40 times, more preferably 7 to 30 times. If the thickness of the entire support is less than 3 times the diameter of the thread-shaped thread or the thickness of the strip-shaped thread, the support may be bumpy.

As the base material for the support of the present invention, various paper base materials, thermoplastic resin film base materials and the like are used. As the paper base material, high-quality paper containing cellulose pulp as a main component,
Paper such as coated paper, art paper, cast coated paper, and processed paper such as laminated paper having a thermoplastic resin layer provided on at least one side are preferably used. Further, as the thermoplastic resin film substrate, polyethylene, polyolefin such as polypropylene, polyethylene terephthalate and copolymers thereof, polyester such as polybutylene terephthalate and copolymers thereof, nylon, polyurethane, polystyrene, polycarbonate and the like as the main component A plastic film to be used, a film obtained by adding an inorganic pigment, an organic pigment, or a different resin to these plastic films and stretching them to make them porous, or a film obtained by containing a foaming agent and foaming them are also preferably used. In addition, these substrates are
It is preferably used as a multi-layer substrate by laminating one or more species.
Further, as the core material, a paper base material, a film made of polyolefin or polyester, or synthetic paper is preferably used.

As a means for solving the above problems, the present invention provides a receiving sheet having an image receiving layer containing a dye-dyeable synthetic resin as a main component on a support containing a paper core material, A thread-shaped thread or a strip-shaped thread made of a synthetic resin film having a metal vapor deposition layer is made in the paper core material.

[0013] Kamishinzai Figure 2, for use in the receiving sheet of the present invention, a cross-sectional view of a paper core layer portion elaborate paper making threads, indicating the position narrowing paper making threads in Kamishinzai. Although the strip-shaped thread 5 is illustrated in FIG. 2, the same applies to the paper-making position when a thread-shaped thread is used. As shown in FIG.
Since the thread 5 is made into the paper core material 3, the thread 5 exists substantially in parallel with the front surface a and the back surface b of the paper core material 3 on the image receiving layer side. When the thickness of the paper core material 3 is T and the thickness of the thread 5 is t, T is preferably 3 times or more, more preferably 4 to 10 times t. Further, the papermaking position of the thread 5 is not particularly limited.
It is preferable to incorporate the paper so that it is not exposed from the surface.

In general, the surface a of the paper core material 3 (image receiving layer
Side) to the surface c of the thread 5 (image receiving layer side)
Distance D₁Is about 1 to 7 times the thread thickness t, especially 1.
It is preferably about 5 to 5 times, and the back of the paper core material 3
From the surface b (the surface opposite to the surface a of the image receiving layer),
The rear surface d of the sheet 5 (the surface opposite to the surface a of the image receiving layer).
At distance D_TwoIs about 0.5 to 6 times the thread thickness t,
It is particularly preferably about 0.5 to 4 times. In the present invention
Is D₁And D_TwoIs selected from the above range and D₁+ D _Two+
The total thickness of t is 3 times or more the thickness t of the thread, preferably
Should be appropriately selected so that the thickness becomes 4 to 10 times.
Yes. In particular, the thread 5 is located at the center of the paper core material (that is, the paper core material).
D, which is about T / 2 away from the surface a on the image receiving layer side of the material₁
And D_TwoWhere and are exactly equal or nearly equal
Is preferably present.

The thickness of the paper core material is not particularly limited, but is preferably about 40 to 300 μm, particularly preferably 60 to 250 μm. If the thickness is less than 40 μm, it may be difficult to evenly machine the thread. On the other hand, when it exceeds 300 μm, the reading accuracy for recognizing the thread is lowered, which may reduce the forgery prevention property.

As the paper core material, paper produced from wood pulp such as kraft pulp, sulfite pulp, groundwood pulp and thermomechanical pulp obtained from ordinary softwood or hardwood, used paper pulp, non-wood pulp and the like can be used. .
Chlorine-free pulp such as ECF pulp and TCF pulp is also preferably used.

Threads Examples of thread threads include threads made of natural fibers such as cotton, hemp, and silk, and synthetic fibers such as acrylic resin fibers, polyester resin fibers, and nylon resin fibers.
The thread-like thread is preferably a dyed thread, a thread having a metal vapor deposition layer, or a thread twisted with a metal foil because of excellent anti-counterfeiting property. The thickness (diameter) of these thread-like threads is about 10 to 80 μm, particularly 10 to 80 μm.
It is preferably about 40 μm. When the thread-like thread has a dyed layer, a metal vapor deposition layer, a metal foil, etc., the thickness of the paper core material is 3 times or more the thickness (diameter) of the whole thread including these.

Examples of the band-shaped thread include those made of a synthetic resin film. Specific examples of such synthetic resin film include 6,6-nylon film, polyethylene terephthalate film, polypropylene film and the like. Examples of such strip-shaped threads include colored threads, particularly threads colored in a color different from that of the paper core material, or the above-mentioned synthetic resin film having a metal vapor deposition layer of aluminum, copper, tin, zinc or the like. It is excellent in anti-counterfeiting property and is preferable.

When the above-mentioned synthetic resin film having a metal vapor deposition layer is used as a band-shaped thread, the metal vapor deposition layer may be applied to only one of the front surface and the back surface of the synthetic resin film, or the front surface and the back surface. May be applied to both. The thickness of the metal vapor deposition layer may be a thickness that is usually applied for the prevention of forgery, for example, 0.05 to 1.0 μm.
It should be about. A thread made of a synthetic resin film having a metal vapor deposition layer can be produced by a conventional method, and for example, various commercially available metal vapor deposition films having a thickness in the above range can be slit into a width in the following range and used.

The width of the band-shaped thread as described above is 0.3 to
It is preferably about 20 mm, particularly about 0.5 to 5 mm, and its thickness (in the case of a metal vapor deposition film, the total thickness of the metal vapor deposition layer and the synthetic resin film).
Is about 10 to 80 μm, preferably about 10 to 40 μm. When the strip-shaped thread is a synthetic resin film having a metal vapor deposition layer, the thickness of the paper core material is three times or more the total thickness of the metal vapor deposition layer and the synthetic resin film.

Further, in the present invention, if necessary, an adhesive layer containing an adhesive as a main component is provided on at least a part of the surface of the thread-shaped or band-shaped thread, so that the thread and the pulp fiber in the paper core material The effect that the thread is difficult to remove from the paper core material at the time of printing or cutting is obtained. When using a strip-shaped thread (including a colored thread or a metal vapor-deposited layer), the adhesive layer may be applied to either the front surface or the back surface of the strip-shaped thread, or may be applied to both the front surface and the back surface. May be.

The adhesive in the adhesive layer may be in the form of an aqueous type (water-soluble type, latex type), an organic solvent type, etc.
Examples thereof include adhesives such as polyester resins, urethane resins, acrylic resins, vinyl acetate resins and the like. Among them, the water-based adhesive is particularly preferable because the residual organic solvent does not affect the image receiving layer. The thread provided with the adhesive layer is adhered to the paper by contact with water at the time of papermaking into the paper core material, heating during drying after papermaking, and the like. If necessary,
By including a fluorescent dye or a fluorescent (phosphorescent) pigment in the adhesive layer, the anti-counterfeit property is further enhanced.

The adhesive layer uses water or an organic solvent as a medium.
The adhesive, and optionally a fluorescent dye and a fluorescent (phosphorescent) pigment are uniformly dispersed to prepare a coating solution for the adhesive layer, which is subjected to roll coating, bar coating, gravure coating, etc. It may be applied and dried. The coating amount of the coating liquid is about 1 to 10 g / m ^{2 on} a dry basis,
Particularly, about ² to 8 g / m ² is preferable.

In the present invention, when the thread-shaped thread or the band-shaped thread has an adhesive layer, the thickness of the paper core material is the diameter of the thread-shaped thread itself excluding the thickness of the adhesive layer or the thickness of the band-shaped thread itself. Be more than 3 times

FIG. 3 shows an example of a support for a receiving sheet of the present invention, which comprises a paper core material in which a strip-shaped thread having the above-mentioned metal vapor deposition layer and adhesive layer is incorporated. In FIG. 3, FIG.
The same parts as are indicated by the same reference numerals. In the embodiment shown in FIG. 3, as the thread, a synthetic resin film 6 and a metal vapor deposition film in which metal vapor deposition layers 7 and 7 ′ are provided on both surfaces of the synthetic resin film 6 are used. The metal vapor deposition layer 7,
A thread obtained by applying only one of 7'to the synthetic resin film 6 may be used as the thread.

The adhesive layer 8 is provided on the surface of the metal deposition layer 7 (the surface on the image receiving layer side), and the adhesive layer 8 '.
Is provided on the surface of the metal vapor deposition layer 7 '(the surface opposite to the image receiving layer), but the adhesive layer may be provided on only one surface.

The method of drawing the thread into the paper core material is not particularly limited, and may be performed according to a commonly used method. For example, in a multi-layer paper machine, thread-shaped or strip-shaped threads are overlapped with each other, and the threads and paper are joined by drying and papermaking.

For example, in the first cylinder of a cylinder paper machine equipped with three tank cylinder bats, a first paper layer having holes (windows) of 1 cm × 1 cm at 10 cm intervals is made, and the window is formed. Insert the thread along the position of, and then overlay the second paper layer on the one surface of the first paper layer without the window formed by the second cylinder and the third paper layer on the other surface. In addition, a paper core material can be obtained by preparing wet paper as a prototype of the paper core material and heating and drying the wet paper according to a conventional method. Also at this time,
By appropriately adjusting the thicknesses of the first paper layer, the second paper layer, and the third paper layer, it is possible to adjust the thread making position.

Multilayer Support The present invention also provides, as one means for solving the above problems, in a receiving sheet having an image receiving layer on the support, the support comprises a laminated base material having at least two layers. In this case, it is possible to dispose a strip-shaped thread containing a metal vapor deposition film or a metal foil between at least two layers of base materials. The thread may be the strip-shaped thread exemplified above, and when the support base material includes a synthetic resin film, a metal vapor deposition film may be directly provided on the base material.

FIG. 4 is a cross-sectional view of a multilayer laminated support of a receiving sheet according to one embodiment of the present invention. In the embodiment shown in FIG. 4, the metal vapor deposition film 15 is laminated in a strip shape on the surface of the core material 13 of the support 11. One or two or more strip-shaped metal vapor deposition films can be laminated on the surface of the core material 13. Further, thermoplastic resin films 14 and 14 'are laminated on both surfaces of the core material 13 with adhesive layers 17 and 17' interposed therebetween, if necessary. Further, FIG. 5 is a cross-sectional view of a support body according to an embodiment of the present invention. In the embodiment shown in FIG. 5, the metal foil 25 is laminated in a strip shape on the surface of the core material 23 of the support 21 with the adhesive layer 26 interposed therebetween. One or two or more strip-shaped metal foils can be laminated on the surface of the base material.

The total thickness of the multilayer laminated support is 40
It is preferably about 300 to 300 μm, and particularly preferably 60 to 250 μm.
If the thickness is less than 40 μm, the support is thin,
The workability in the support manufacturing process may be reduced. On the other hand, if the thickness of the support exceeds 300 μm, the reading accuracy for recognizing the metal vapor deposition layer or the metal foil is lowered, and thus the forgery prevention property is lowered. Also, if the thickness of the entire support is too thin, its mechanical strength becomes insufficient,
In addition, the rigidity of the receiving sheet obtained therefrom is insufficient, and the curling of the receiving sheet that occurs during printing cannot be sufficiently prevented. On the other hand, if the thickness is too large, the thickness of the obtained receiving sheet becomes too large, which reduces the number of receiving sheets that can be accommodated in the printer, or conversely increases the volume of the printer, making it difficult to make the printer compact. Occurs.

If the total thickness of the multilayer laminated support is less than 3 times the thickness of the metal vapor-deposited layer or the total thickness of the metal foil and the adhesive layer, the core material may be bumpy. As for the thickness of the entire support, when using a metal foil,
At least 3 times the total thickness of the metal foil and adhesive layer is required,
It is preferably 5 to 40 times, more preferably 7 to 30 times.
Double. When a metal vapor deposition layer is used, it is preferably about 200 to 5000 times the thickness of the metal vapor deposition layer.

Metal Vapor Deposition Layer The metal vapor deposition layer may be applied only to either the front surface or the back surface of the core material base material, or may be applied to both the front surface and the back surface. The metal used for vapor deposition is not particularly limited, but a metal such as aluminum, copper, tin, or zinc is used. Among them, aluminum is often used because of its large saturated vapor pressure at low temperature, large amount of evaporation, and large evaporation rate. The thickness of the metal vapor deposition layer may be a thickness that is usually applied for the prevention of forgery, for example, 0.05 to 1.0 μm.
It should be about. The width of the strip-shaped metal vapor deposition layer is 0.3 to
It is preferably about 20 mm, particularly about 0.5 to 5 mm.

As a method of forming a metal vapor deposition layer in a strip shape, a metal vapor deposition is carried out in a strip shape through a pattern mask, or a transparent thermoplastic ink is deposited on the entire surface without using a pattern mask. The pattern can be obtained by pattern-printing the protective film and etching the metal vapor deposition film exposed by the corrosive liquid. In any case, it does not matter how this pattern is formed.

Metal Foil The metal foil may be attached to only one of the front surface and the back surface of the core material, or may be attached to both the front surface and the back surface. The material of the metal foil is not particularly limited, but metals such as aluminum and copper are used. Among them, aluminum foil is often used because of its excellent light-shielding property, moisture-proof property, gas barrier property and the like. The thickness of the metal foil may be the thickness normally used for food packaging, etc. 4
Is preferably about 15 to 15 μm, more preferably 5 to 9 μm.
Is. The width of the strip-shaped metal foil is about 0.3 to 20 mm,
Particularly, it is preferably about 0.5 to 5 mm.

As a method of sticking the metal foil to the paper base material, a method of sticking the metal foil and the paper base material using an emulsion vinyl acetate as an adhesive by a wet laminating method is often used. As a method for laminating the metal foil on the thermoplastic film substrate, a method for laminating with a dry lamination method using a solvent-based urethane adhesive is often used. As a method of forming a metal foil in a strip shape, a pattern printing of a protective film by a transparent thermoplastic ink on a metal foil adhesively bonded to a base material, a method of etching a metal vapor deposition film exposed by a corrosive liquid, Alternatively, it can be obtained by a method in which an adhesive layer is applied in a streak shape and a band-shaped metal foil is laminated. In any case, it does not matter how this pattern is formed.

When the strip-shaped metal foil is laminated on the paper base material or the thermoplastic resin film base material via the adhesive layer, the total thickness of the support is the thickness of the metal foil and the adhesive layer. It is necessary to have three times or more of the total thickness of the and.

Thermoplastic Resin Film The support of the receiving sheet of the present invention may be, for example, a multilayer substrate obtained by laminating a core material having a strip-shaped thread on the surface and one or more other substrates. As the other substrate, the above-mentioned substrate for a support or the like can be used, and a thermoplastic resin film is preferably used. Examples of the thermoplastic resin film include polyolefin resins such as polyethylene and polypropylene, polyamide resins such as nylon 6, polyethylene terephthalate and its copolymers, polybutylene terephthalate and its copolymers, and thermoplastic polyester resins such as aliphatic polyesters. , Polycarbonate, polystyrene, a plastic film containing polyurethane as a main component, or a film obtained by adding a pigment or a different resin to these plastic films, stretching them to make them porous, or containing a foaming agent and foaming them. Can be mentioned.

Among the above-mentioned thermoplastic resins, a polyolefin film such as polyethylene or polypropylene is preferably used, and a multilayer film having a biaxially stretched void (microvoid) containing a polyolefin resin and an inorganic pigment as a main component is preferable. used. An example thereof is a so-called synthetic paper, which is a multi-layered film having voids (microvoids) that are biaxially stretched and whose main components are polypropylene resin and an inorganic pigment.

Among the above thermoplastic resins, polyester resin film is also preferably used. In particular, a homopolymer composed of terephthalic acid and ethylene glycol,
Alternatively, a copolymer obtained by copolymerizing terephthalic acid or ethylene glycol with a third component can be used. As the third component, an oxycarboxylic acid such as P-hydroxybenzoic acid, a dicarboxylic acid such as isophthalic acid or naphthalenedicarboxylic acid,
An alkylene glycol such as polypropylene glycol or tetramethylene glycol or a polyalkylene glycol such as polyethylene glycol is used.

Further, the polyester film preferably has a porous (microvoid) layer and is excellent in cushioning property and heat insulating property. The method for forming the porous layer can be obtained by uniformly dispersing an incompatible resin and a filler in a base resin and stretching the base resin. In the case of a polyester resin, examples of the incompatible resin include polyolefins such as polyethylene and polypropylene, polystyrene, butadiene, acrylonitrile, and copolymers thereof, but are not limited thereto. Examples of the filler include calcium carbonate, magnesium oxide, titanium oxide, magnesium carbonate, aluminum hydroxide, sodium aluminosilicate, potassium aluminosilicate, clay, mica, talc, barium sulfate, calcium sulfate, and the like. Use more than one type.

In the present invention, when the thermoplastic resin film is adhesively laminated on both surfaces of the core material layer, the front and back surfaces may be the same kind of film or different kinds of films. The thickness of the thermoplastic resin film is 10 to 100 μm
Is preferable, and more preferably 20 to 90 μm. If the thickness of the thermoplastic resin film is less than 10 μm, the workability in forming the support may be poor, and the mechanical strength of the support obtained may decrease due to the thin thickness. is there. If the thickness exceeds 100 μm,
The thickness of the obtained support becomes excessive, and the number of receiving sheets accommodated in the printer decreases.

In the support of the present invention, a method of laminating a paper core material having a thread inside and a thermoplastic film, and a base material (paper or a thermoplastic resin film base material) having a band-shaped thread on at least one surface of the base material, Other thermoplastic film laminating methods are not particularly limited, but known techniques such as dry laminating, wet laminating, extrusion laminating and wax laminating may be used, and the dry laminating method is widely used. Polyether-based as a dry laminate adhesive,
A compound in which a curing agent such as polyisocyanate or epoxy is mixed with a polymer adhesive component such as polyester is often used. The coating amount of the adhesive is preferably in the range of 1 to 30 g / m ² .

The coating amount of the adhesive layer can be selected in consideration of the curl balance or the flatness of the support. In the case of a multi-layer structure in which a strip-shaped thread is provided with a metal foil, the adhesive layer thickness is equal to or more than the total thickness of the metal foil thickness and the adhesive layer thickness for laminating the metal foil on the base material and flattened. It is preferable to improve the property. In addition, the extrusion lamination method is preferably carried out in order to improve the image quality.

Image-Receiving Layer In the receiving sheet of the present invention, the recording layer provided on one surface of the support is an image-receiving layer suitable for known recording methods such as sublimation dye thermal transfer recording and melt ink thermal transfer recording. can do. Of course, it may be an image receiving layer having a plurality of recording suitability.

As the sublimation dye image-receiving layer, known materials used for sublimation dye thermal transfer receiving layers are used. As the resin forming the sublimation dye image-receiving layer, a resin having a good affinity with the dyeing dye from the ink ribbon is used.
As such a sublimation dye-accepting resin, polyester resin, polycarbonate resin, vinyl chloride copolymer, polyvinyl acetal resin, cellulose derivative, acrylic resin and the like can be used. In order to prevent the sublimation dye image-receiving layer from fusing with the ink ribbon due to heating of the thermal head during printing, one or more kinds of crosslinking agents, slip agents, release agents, etc. are added to the resin. Is preferably provided. If necessary, one or more kinds of fluorescent dyes, plasticizers, antioxidants, ultraviolet absorbers, pigments and the like may be added to the above resins. These additives may be mixed with the components for forming the sublimation dye image-receiving layer for coating, or may be applied as a coating layer separate from the sublimation dye image-receiving layer on and / or below the sublimation dye image-receiving layer. It may be worked.

The dry coating amount of the sublimation dye image-receiving layer is preferably
1 to 15 g / m^TwoIt is about 3 and more preferably 3
-10g / m^TwoIs. Sublimation dye image receiving layer coating amount
1 g / m^TwoBelow the image-receiving layer completely covers the support surface.
Cannot be performed, resulting in poor image quality and thermal head
The ink sheet and sublimation dye image-receiving layer come into contact with each other when heated.
A fusion problem of wearing may occur. one
On the other hand, the coating amount is 15g / m ^TwoIf it exceeds, the effect will be saturated and
Not only is it economical, but the strength of the coating is insufficient and
The thickness of the Chinese dye image receiving layer is increased, and the heat insulation effect of the support is improved.
The print density may not be sufficiently exhibited and the print density may decrease.

As the molten ink heat transfer receiving layer, known materials used for the molten ink heat transfer receiving layer are adopted.
As the resin forming the molten ink receiving layer, a water-soluble and / or water-dispersible polymer compound is often used, but is not particularly limited. For example, cationic starch, starches such as oxidized starch, cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose, polyvinyl alcohol, vinyl acetate, (meth) acrylic acid, (meth)
Adhesives such as vinyl polymers and copolymers such as acrylates, synthetic rubber latex such as styrene-butadiene and methylmethacrylate-butadiene, and synthetic polymers such as polyurethane resin and polyester resin are mentioned. 1 type or 2 types or more are appropriately selected and used.

A pigment is added in addition to the above-mentioned adhesive in order to enhance the acceptability of the molten ink. As the pigment, various pigments used for general coated paper, for example, various kaolin, aluminum hydroxide, light calcium carbonate, heavy calcium carbonate, barium sulfate, titanium oxide, mineral pigments such as silica, polystyrene resin, melamine Examples thereof include fine particles such as resin and benzoguanamine resin, and organic pigments such as minute hollow particles. One or more kinds of these are appropriately selected and used in combination. Further, if necessary, a surfactant, a dispersant, a stabilizer, an ultraviolet absorber, a cross-linking agent, a fluorescent dye, a lubricant, a viscosity modifier and the like can be appropriately used.

The dry coating amount of the molten ink receiving layer is preferably 1 to 12 g / m ² , and more preferably ^{2 to} 10 g / m ^2.
Is. If the dry coating amount is less than 1 g / m ² , the image receiving layer may not be able to completely cover the support, and the image quality may deteriorate. Further, if the coating amount exceeds 12 g / m ² , the strength of the coating film may decrease, and the effect is saturated, which is uneconomical. The surface of the melted ink receiving layer is preferably subjected to a smoothing treatment in a usual drying process or surface finishing process, and the surface roughness is adjusted to an appropriate roughness from the viewpoint of running property and image quality.

Intermediate Layer In the receiving sheet of the present invention, an intermediate layer is provided between the support and the image receiving layer in order to improve the adhesion between the support and the image receiving layer and the antistatic property of the receiving sheet. Good. As the resin used for forming the intermediate layer, various hydrophilic resins,
Hydrophobic resins can be used, for example polyvinyl alcohol, vinyl polymers such as polyvinylpyrrolidone and its derivatives, polyacrylamide, polydimethylacrylamide, polyacrylic acid or a salt thereof, polymers containing an acrylic group such as polyacrylic acid ester, Polymers containing a methacrylic group such as polymethacrylic acid and polymethacrylic acid ester, polyester resins, polyurethane resins, starch, modified starch, and cellulose derivatives such as carboxymethyl cellulose can be used. Further, one or more known antistatic agents, cross-linking agents, inorganic pigments, organic pigments and the like can be used alone or in combination with the above resins.

The coating amount of the intermediate layer of the present invention is preferably 0.2 to 5 g / m ^{2 in} dry mass, more preferably 0.5 to 3 g / m ² . Coating amount is 0.2g /
If it is less than m ² , the effect of improving the adhesiveness as an intermediate layer is small, and if it exceeds 5 g / m ² , the adhesiveness, blocking and operability may be deteriorated.

Back Layer In the receiving sheet of the present invention, a back layer containing an antistatic agent may be formed on the surface (back surface) opposite to the image receiving layer. With such a configuration, the operation of supplying the receiving sheet to the printer, causing the receiving sheet to run in the printer, and sending out from the printer can be smoothly performed.
As the antistatic agent contained in the back surface layer, polyethyleneimine, a cationic monomer-containing acrylic resin, a cation-modified acrylamide resin, a cationic conductive agent such as cation-modified starch or anion-based, selected from various conductive agents such as nonionic, An appropriate amount thereof may be contained in the back surface layer. As a binder for these additives, a water-soluble resin such as polyvinyl alcohol, or an acrylic resin, an epoxy resin, a polyester resin, a phenol resin, an alkyd resin, a urethane resin, a melamine resin, or a reaction cured product of these resins is used. be able to.
If necessary, a filler such as an inorganic pigment or an organic pigment may be added as a friction coefficient adjusting agent.

The coating amount of the back surface layer is 0.3 to 10 in dry mass.
The range of g / m ² is preferable, and more preferably 1 to 5 g /
It is in the range of m ² . If the coating amount is less than 0.3 g / m ² , scratches on the thermal transfer recording surface may not be sufficiently prevented when the receiving sheet is rubbed, a coating film defect may occur, and surface electrical resistance may increase. Sometimes. If it exceeds 10 g / m ² , the effect is saturated and it is uneconomical.

The image receiving layer, intermediate layer and other coating layers of the receiving sheet of the present invention are coated by a conventional method using a coater such as a bar coater, a gravure coater, a comma coater, a blade coater or an air knife coater. It can be dried and formed.

The receiving sheet of the present invention may be subjected to so-called adhesive processing in which an adhesive resin layer and a release sheet are laminated on the surface of the support having no image receiving layer. In the case of a paper support, it is preferable to form a synthetic resin layer between the adhesive resin layers because the components in the adhesive resin layer may migrate to the image receiving layer and adversely affect the image. The synthetic resin layer may be formed by coating a film-forming resin such as polyvinyl alcohol, carboxymethyl cellulose, hydroxyethyl cellulose, styrene-butadiene copolymer, or the like, and may be formed of a thermoplastic resin such as polyethylene, polystyrene, polyamide, or polyvinyl chloride. The resin may be formed by extrusion molding or injection molding.

The adhesive resin layer is a solvent type, an emulsion type,
In the form of hot melt, etc., the main component is acrylic resin, vinyl ether type, rubber type, silicone type adhesive resin component, tackifier, antiaging agent, stabilizer, softener such as oil, filler, stable Agents, pigments, colorants and the like can be added as necessary. The pressure-sensitive adhesive resin layer may be directly applied to the support or the synthetic resin layer, or may be applied to a release sheet, dried if necessary to form the pressure-sensitive adhesive resin layer, and then bonded to the support. The coating amount of the adhesive resin layer is preferably in the range of 5 to 50 g / m ^{2 in} dry mass,
It is more preferably adjusted in the range of 10 to 30 g / m ² . By the way, if it is less than 5 g / m ² , the adhesive strength to the adherend tends to be insufficient, while if it exceeds 50 g / m ² , the adhesive may squeeze out, cause cohesive failure during peeling, or rise up during punching. May cause

The release sheet is not particularly limited, and high density base paper such as glassine paper, clay coated paper, kraft paper or paper obtained by laminating a film of polyethylene or the like on high quality paper, polyvinyl alcohol on high quality paper, or the like. Fluorine resin or silicone resin is applied to paper coated with acrylic ester copolymer resin, etc., or plastic film such as polyethylene terephthalate, polypropylene, etc. to a dry mass of about 0.1 to 3 g / m ² and heat cured. Those provided with a release agent layer by, for example, ionizing radiation curing or the like are appropriately used.

[0059]

The present invention will be described in more detail with reference to the following examples, but of course the present invention is not limited thereto. In addition, all "parts" and "%" in an Example show a "mass part" and "mass%."

Example 1 (Preparation of band-shaped thread) A urethane resin adhesive (trade name: Superflex 750, No. 1) was formed on both sides of a polyethylene terephthalate film (thickness including vapor deposition layer: 10 μm) in which aluminum was vacuum-deposited on both sides. Ichikohyo Pharmaceutical Co., Ltd.) was applied and dried by a gravure roll coater so that the dry mass was 3 g / m ² . Then, it was slit into a width of 4 mm with a micro slitter and wound on a bobbin to obtain a band-shaped thread.

(Preparation of Paper Core Material) In the first cylinder of a cylinder paper machine equipped with three tanks of cylinder butt, the first paper layer in which 1 cm × 1 cm (window) is vacated at 8 cm intervals is used. Then, the above thread was inserted along the position of the window. Next, on one surface of the first paper layer, the second paper layer of the entire surface without window made by the second cylinder is overlaid, and on the other surface, the third paper layer is overlaid to form a prototype of the paper core material. Wet paper (water content 50%) is made and dried through a Yankee dryer (surface temperature: about 70 ° C) and four cylinder dryers (surface temperature: about 70-90 ° C), moisture content 5%, thickness A 80 μm paper core material was obtained. In this paper core material, the thread was machined in approximately the center in the thickness direction of the paper core material.

(Preparation of Support) Polypropylene is the main component on both sides of the paper core material obtained above, and about 30 as an inorganic pigment.
Biaxially stretched thickness containing 50% calcium carbonate etc. 50μ
m porous multi-layer film (trademark: YUPO FPU50,
180 μm in thickness by laminating (Yupo Corporation) with a urethane type adhesive by a dry lamination method.
To obtain a support.

(Preparation of Receiving Sheet) On one side of the support, an intermediate layer paint-1 having the following composition was applied by a bar coating method to a dry coating amount of 1 g / m ² and dried to form an intermediate layer. Formed. Then, a sublimation dye image-receiving layer paint-2 having the following composition was applied onto this intermediate layer by a bar coating method to give a dry coating amount of 5 g.
The image-receiving layer was formed by coating and drying so that the image-receiving layer had a thickness of / m ² . Intermediate layer paint-1 Polyethyleneimine (trademark: Epomin PP-061, manufactured by Nippon Shokubai) 4 parts Ethanol 100 parts Sublimation dye image receiving layer paint-2 Polyester resin (trademark: Byron 200, Toyobo) 100 parts Silicone oil (trademark: KF393, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts Isocyanate (trademark: Takenate D-110N, manufactured by Takeda Pharmaceutical Co., Ltd.) 5 parts Toluene 200 parts Next, on the opposite surface of the support (the surface on which the image receiving layer is not provided), the following composition: The back surface coating material-3 was applied and dried by a bar coating method so that the dry coating amount was 1.2 g / m ² , and the back surface layer was formed to obtain a receiving sheet. Back surface layer paint-3 Acrylic resin (trademark: Ricabond SAR-615A, manufactured by Chuo Rika) 100 parts Conductive agent (trademark: ST2000H, manufactured by Mitsubishi Yuka) 75 parts Silica pigment (trademark: PM363, manufactured by Mizusawa Chemical) 30 parts Isopropyl alcohol 200 parts Toluene 100 parts

Example 2 A receiving sheet was prepared in the same manner as in Example 1 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 1. (Preparation of paper core material) 1 cm x 1 cm (window) is 8 cm in the first cylinder of a cylinder paper machine equipped with 3 tank cylinder bats
The first paper layer which was vacant at intervals was made into paper, and a thread thread made of silk gold thread (silk thread with gold vapor deposited: diameter of 25 μm including gold vapor deposition layer) was inserted along the window position.
Next, one side of the first paper layer is overlaid with the second paper layer of the entire surface without window made by the second cylinder, and the other side is overlaid with the third paper layer to form a prototype of the paper core material. Wet paper (water content: 50%) is made and dried through a Yankee dryer (surface temperature: about 70 ° C) and four cylinder dryers (surface temperature: about 70 to 90 ° C), moisture content 5%, thickness 150 μm. A paper core material was obtained. In this paper core material, the thread-shaped thread was machined at approximately the center in the thickness direction of the paper core material. (Preparation of support) On both sides of the paper core material obtained above, biaxially stretched porous polyester film (trade name: W900J38, manufactured by Mitsubishi Kagaku Polyester Film) containing an inorganic pigment and having a thickness of 38 μm, is urethane-type bonded. The materials were laminated by a dry lamination method to obtain a support having a thickness of 226 μm.

Example 3 A receiving sheet was prepared in the same manner as in Example 1 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 1. (Preparation of support) A porous polyester film (Trademark: 50E63S, manufactured by Toray) having a thickness of 50 μm and containing an inorganic pigment on both sides of the paper core material obtained in Example 1 and biaxially stretched was applied with a urethane adhesive. The substrates were laminated and laminated by a dry lamination method to obtain a support having a thickness of 180 μm.

Example 4 The following submerged ink thermal transfer receptor layer coating material-4 was used in place of sublimation dye image receiving layer coating material-2 used in the preparation of the receiving sheet of Example 1, and the dry coating amount was 9.0 g / A receiving sheet was prepared in the same manner as in Example 1 except that m ² was used. Melt ink Heat transfer receptor layer paint-4 Spindle type light calcium carbonate 90 parts Titanium oxide 10 parts Sodium polyacrylate 0.4 parts Polyvinyl alcohol 20 parts Styrene-butadiene synthetic rubber 3 parts Optical brightener 1 part Water 120 parts

Comparative Example 1 In the production of the thread of Example 1, instead of the polyethylene terephthalate film (thickness including vapor deposition layer: 10 μm) in which aluminum was vacuum deposited on both sides, polyethylene in which aluminum was vacuum deposited on both sides was used. A receiving sheet was prepared in the same manner as in Example 1 except that a terephthalate film (thickness including vapor deposition layer: 70 μm) was used.

Comparative Example 2 Instead of using a thread made of silk gold thread (silk thread with gold vapor-deposited: diameter of 25 μm including gold vapor-deposited layer) in preparation of the paper core material of Example 2, silk gold thread A receiving sheet was prepared in the same manner as in Example 2 except that a thread-shaped thread made of (silk thread deposited with gold: diameter of 80 μm including gold deposited layer) was used.

Example 5 (Preparation of Support) A biaxially stretched 75 μm-thick polyester film (trademark: Tetron S, manufactured by Teijin) was passed through a pattern mask having a strip-shaped slit on one side to form an aluminum vapor deposition film having a thickness of 600 liters. Was formed by a vacuum vapor deposition method (the slit pattern has an alternating interval of a strip metal deposition layer width of 3 mm and a strip undeposited portion width of 27 mm) to obtain a core material. Biaxially stretched multi-layered film having a thickness of 60 μm (trademark: YUPO FPG6) containing polypropylene as a main component on both sides of the core material and containing about 30% of calcium carbonate as an inorganic pigment.
No. 0, made by YUPO Corporation) is laminated by a dry lamination method with a urethane type adhesive to give a thickness of 205
A support of μm was obtained. (Preparation of Receiving Sheet) On the surface of the support on which the metal vapor deposition layer is provided, an intermediate layer paint-5 having the following composition is applied by a bar coating method to give a dry coating amount of 1.2 g / m ² . And dried to form an intermediate layer. Then, a sublimation dye image-receiving layer coating material-6 having the following composition was applied onto this intermediate layer by a bar coating method so that the dry coating amount was 6.5 g / m ² , and the image-receiving layer was formed. Intermediate layer paint-5 Acrylic resin (trademark: Ricabond SAR-615A, manufactured by Chuo Rika) 70 parts Epoxy resin (trademark: Ricabond SAR-615B, manufactured by Chuo Rika) 20 parts Cationic conductive agent (trademark: Chemistat 9800, Sanyo Kasei) ) 100 parts isopropyl alcohol 150 parts water 50 parts sublimation dye image receiving layer paint-6 polyester resin (trademark: Byron 200, manufactured by Toyobo) 100 parts silicone oil (trademark: KF393, Shin-Etsu Chemical Co., Ltd.) 2 parts isocyanate (trademark: Takenate) D-120N, manufactured by Takeda Pharmaceutical Co., Ltd. 6 parts Hindered amine light stabilizer (trademark: ADEKA STAB LA-63, manufactured by Asahi Denka Kogyo Co., Ltd.) 3 parts Toluene 200 parts Next, the opposite surface of the support (image receiving layer is provided). On the non-coated surface), a back surface coating material-7 having the following composition is applied by a bar coating method to a dry coating amount. There was obtained a receiving sheet to form a back surface layer by coating dried so as to 3 g / m ^2. Back surface layer coating-7 Polyvinyl acetal resin (Trademark: S-REC KX-1, manufactured by Sekisui Chemical Co., Ltd.) 25 parts Polyacrylic ester resin (Trademark: Julimer AT-613, manufactured by Nippon Pure Chemical Co., Ltd.) 12 parts Nylon resin particles (Trademark: Organazole) , Alfatchem, average particle size 5 μm) 3 parts Silicone resin (trademark: KF101, manufactured by Shin-Etsu Chemical) 5 parts Zinc stearate dispersion (trademark Z-7-30, manufactured by Chukyo Yushi) 4 parts Cationic conductive resin (trademark) : Chemistat 9800, Sanyo Kasei) 6 parts Isopropyl alcohol 56 parts Water 42 parts

Example 6 A receiving sheet was prepared in the same manner as in Example 5 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 5. (Preparation of Support) Biaxially Stretched Polypropylene Film with a Thickness of 60 μm (Trademark: Pyrene OT, P2161 #
60, manufactured by Toyobo Co., Ltd., through a pattern mask having a strip-shaped slit on one side, a 700 Å-thick aluminum vapor-deposited film is vacuum-deposited (the slit pattern has a strip-shaped metal vapor deposition layer width of 3 mm and a strip-shaped undeposited portion of 27 mm in width). Spacing) to form a core material. A biaxially stretched porous polyester film (trade name: W900J75, made by Mitsubishi Kagaku Polyester Film) having a thickness of 75 μm and containing an inorganic pigment on both sides of the core material is laminated and bonded by a dry lamination method with a urethane type adhesive, A support having a thickness of 215 μm was obtained.

Example 7 A receiving sheet was prepared in the same manner as in Example 5 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 5. (Preparation of support) 100 μm thick coated paper (trademark: O
K top coat N, 127.9 g / m ² , made by Oji Paper Co., Ltd.)
A 500 Å-thick aluminum vapor-deposited film is formed by a vacuum vapor deposition method (the slit pattern is an alternating interval of the strip-shaped metal vapor deposition layer width 3 mm and the strip-shaped undeposited portion width 27 mm) through a pattern mask having a strip-shaped slit on one side of As the core material. Polypropylene as the main component on both sides of the core material,
Biaxially stretched multi-layered film (trademark: YUPO FPU50, manufactured by YUPO Corporation) having a thickness of 50 μm and containing approximately 30% of calcium carbonate as an inorganic pigment is laminated and adhered by a urethane type adhesive by a dry lamination method. ,
A support having a thickness of 205 μm was obtained.

Example 8 A receiving sheet was prepared in the same manner as in Example 5 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 5. (Preparation of Support) Biaxially stretched 50 μm-thick polyester film (trademark: Tetron S, manufactured by Teijin) was laminated and laminated with a 7 μm-thick aluminum metal foil on one side thereof via a urethane adhesive ( The total thickness of the aluminum foil and the adhesive is 15 μm). Then, an epoxy acrylate resin (trademark: Lipoxy SP-260) was applied on the aluminum foil surface.
0, manufactured by Showa High Polymer Co., Ltd.), and a coating solution having a composition of 100 parts and 5 parts of benzophenone as a transparent thermoplastic resin ink,
A pattern was printed by a gravure printing method, the exposed metal foil was etched with a sodium hydroxide solution, washed with water and dried. A laminate having a pattern in which a metal foil having a width of 5 mm and a portion having no metal foil having a width of 25 mm were alternately repeated was formed on the polyester film. A biaxially stretched porous multi-layered film (trademark: YUPO FPG60, manufactured by YUPO Corporation) having a thickness of 60 μm containing polypropylene as a main component and about 30% of calcium carbonate as an inorganic pigment on both surfaces of the above-mentioned laminate. , Laminated by dry lamination method with urethane type adhesive,
A support having a thickness of 195 μm was obtained.

Example 9 A receiving sheet was prepared in the same manner as in Example 5 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 5. (Preparation of Support) Biaxially Stretched Polypropylene Film with a Thickness of 60 μm (Trademark: Pyrene OT, P2161 #
No. 60, manufactured by Toyobo Co., Ltd.), and an aluminum metal foil having a thickness of 7 μm was laminated on one surface via a urethane adhesive (total thickness of the aluminum foil and the adhesive was 13 μm). Then, an epoxy acrylate resin (trademark: Lipoxy SP-2600, manufactured by Showa Polymer Co., Ltd.) 100 on the aluminum foil surface.
Parts of benzophenone was used as a transparent thermoplastic resin ink to perform pattern printing by a gravure printing method, and the exposed aluminum metal foil was etched with a sodium hydroxide solution, washed with water and dried. A laminate having a pattern in which an aluminum metal foil having a width of 5 mm and a portion having no aluminum metal foil having a width of 25 mm were alternately repeated was formed on the polypropylene film. Then, a biaxially stretched porous polyester film having a thickness of 50 μm (trademark: 50E63S, manufactured by Toray) containing inorganic pigments on both surfaces of the above-mentioned laminate was laminated and bonded by a dry lamination method using a urethane type adhesive, A support having a size of 185 μm was obtained.

Comparative Example 3 A receiving sheet was prepared in the same manner as in Example 5 except that the following support was used instead of the support used in the preparation of the receiving sheet of Example 5. (Preparation of support) A 30 μm thick aluminum metal foil is laminated and laminated on one surface of a biaxially stretched 25 μm thick polyester film (trademark: Tetron S, manufactured by Teijin) via a urethane adhesive. (The total thickness of the aluminum foil and the adhesive was 50 μm). Then, an epoxy acrylate resin (Trademark: Lipoxy SP-26 was used on the aluminum foil surface.
00, manufactured by Showa High Polymer Co., Ltd.) and 100 parts of benzophenone, and 5 parts of benzophenone as a transparent thermoplastic resin ink are pattern-printed by a gravure printing method to expose an aluminum metal foil exposed with a sodium hydroxide solution. The laminate was etched, washed with water and then dried to obtain a laminate provided with a strip-shaped metal foil. Then, on the surface of the laminated body on which the strip-shaped metal foil is provided, an inorganic pigment is contained and biaxially stretched to a thickness of 38 μm.
m porous polyester film (trademark: W900J3
8, Mitsubishi Kagaku Polyester Film), and a 25 μm thick white polyester film (trademark: Tetron U4, Teijin) biaxially stretched on the surface of the laminate on the side where the strip-shaped metal foil is not provided, Laminated and laminated by dry lamination method with urethane type adhesive, thickness 145μm
To obtain a support.

"Evaluation" The receiving sheets obtained in Examples 1 to 9 and Comparative Examples 1 to 3 were evaluated by the following methods, and the results are shown in Table 1.

Bocking The receiving sheets obtained in Examples 1 to 9 and Comparative Examples 1 to 3 were wound up (width 40 cm, length 50 m, core diameter 8 cm), and the state of bocking was visually observed. ◯: There is almost no waviness due to bouncing in the winding. X: Rippling due to bouncing is strongly generated during winding.

Recording Image Quality (Sublimation Dye Image Receiving Sheet) The sublimation dye image receiving sheets obtained in Examples 1 to 3 and 5 to 9 and Comparative Examples 1 to 3 were evaluated by the following methods. Thickness 6μ
Ink layers of yellow, magenta, and cyan, each having an ink layer containing a sublimable dye together with a binder on a polyester film of m, are brought into contact with a receiving sheet, and a commercially available sublimation thermal transfer video printer (trademark: UP5
No. 0 (manufactured by Sony Corp.) was used to heat the stepwise heating with a thermal head to transfer a predetermined image to the receiving sheet, thereby printing an image of an intermediate color of each color and a color superposed image. About the recorded image transferred on this receiving sheet,
The reflection density was measured for each applied energy using a Macbeth densitometer RD-914 (trademark), and the optical density (black) was 0.
Regarding the uniformity of the gradation recorded image in the portion corresponding to 5, the recorded image of the portion where the thread was made, the portion where the metal vapor deposition film was laminated, and the portion where the metal foil was laminated were visually evaluated. Good: The outline of the thread, the metal vapor deposition film, and the metal foil was not visually confirmed as a latent image in the recorded image, and the image was good. X: In the recorded image, the outline of the thread, the metal vapor deposition film, and the metal foil was visually confirmed as a latent image, and the image was defective.

Recording Image Quality (Fused Ink Receiving Sheet) The fused ink receiving sheet obtained in Example 4 was evaluated by the following methods. A test pattern having a rainbow, a grid, and a halftone dot recording was recorded using a color printer (trademark: CHC-443, manufactured by Shinko Denki Co., Ltd.) of a melt ink thermal transfer system, and a halftone dot recorded image obtained was Macbeth densitometer RD-
914 (trademark) was used to measure the reflection density for each halftone dot density, and for the uniformity of the halftone dot recorded image in the portion where the optical density (black) was 0.5, especially in the portion where the thread was cut into paper. The recorded image was visually evaluated. ◯: The contour of the thread was not visually confirmed as a latent image in the recorded image, and the image was good. X: The contour of the thread was visually confirmed as a latent image in the recorded image, and the image was defective.

[0079]

[Table 1]

[0080]

INDUSTRIAL APPLICABILITY The receiving sheet of the present invention has little scumbling even on a support having anti-counterfeit measures, and has an excellent recording image quality.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a receiving sheet in which a thread is made into a paper core material according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a paper core material portion in which a thread used in the present invention is incorporated.

FIG. 3 is a cross-sectional view showing an example of a support of the receiving sheet of the present invention provided with a paper core material in which a band-shaped thread having a metal vapor deposition layer and an adhesive layer is incorporated.

FIG. 4 is a cross-sectional view showing an example of a support in which a thermoplastic resin film is laminated on both surfaces of a core material having a metal vapor deposition layer according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing an example of a support body in which thermoplastic resin films are laminated on both surfaces of a core material in which metal foils according to one embodiment of the present invention are laminated.

[Explanation of symbols]

1 support 2 Image receiving layer 3 Paper core 4, 4'thermoplastic resin layer 5 threads a Surface of paper core with thread b Back side of paper core with thread c Thread surface d Thread back side 6 synthetic resin film 7,7 'metal vapor deposition layer 8,8 'adhesive layer 9,9 'adhesive layer 11, 21 Support 13, 23 Core material 14, 14 'thermoplastic resin film 24, 24 'thermoplastic resin film 15 Metal deposition layer 17, 17 'adhesive layer 25 metal foil 26 Adhesive layer 27, 27 'adhesive layer

Claims (4)

[Claims] 1. A thermal transfer receiving sheet having an image receiving layer on at least one surface of a support, wherein the support has the following structure:
A thermal transfer receiving sheet comprising a thread-shaped thread or a band-shaped thread, wherein the thickness of the support is 3 times or more the diameter of the thread-shaped thread or the thickness of the band-shaped thread. 2. The thermal transfer receiving sheet according to claim 1, wherein the support has a thickness of 40 to 300 μm. 3. The support has at least one paper core material layer, and a strip-shaped thread made of a synthetic resin film having a thread thread or a metal vapor deposition layer is incorporated into the paper core material layer. The thermal transfer receiving sheet according to claim 1, which is a sheet. 4. The support is a multi-layer substrate in which at least two or more layers of substrate are laminated, and the laminated surface of the substrate is
The thermal transfer receiving sheet according to claim 1, which is provided with a strip-shaped thread having a metal vapor deposition layer or a metal foil layer.