JP5910053B2 - Sublimation transfer image receiving sheet and method for producing sublimation transfer image receiving sheet - Google Patents

Description

  The present invention relates to a sublimation transfer image receiving sheet and a method for producing a sublimation transfer image receiving sheet.

  Conventionally, a sublimation transfer image-receiving sheet in which a plurality of layers are formed on a substrate has been produced by sequentially forming layers such as an intermediate layer, a foam layer, and a receiving layer on a substrate as in Patent Document 1. .

  In recent years, a technique for simultaneously applying a heat insulating layer, a cushion layer, and a receiving layer on a substrate using water-based ink has been developed. For example, as in Patent Document 2, a sublimation transfer image having a multilayer structure is formed by a single application. A sheet can be obtained.

Japanese Patent Laid-Open No. 10-193805 JP 2010-234702 A

The image printing characteristics (γ curve) of the sublimation transfer image receiving sheet are determined by the layer structure of the sublimation transfer image receiving sheet and the resin composition of the receiving layer. It is difficult to obtain exactly the same image printing characteristics as a sublimation transfer image receiving sheet using a different resin by using a new resin composition.
For this reason, it has been difficult to obtain an image-receiving sheet having a sublimation transfer image-receiving sheet made of an oil-soluble resin and having the same image printing characteristics with a water-soluble resin or an aqueous emulsion resin.

  In addition, it has been studied that water-based inks using water-soluble resins or water-based emulsion resins are simultaneously applied in multiple layers, but there has been no technique for producing a sublimation transfer image-receiving sheet by simultaneous multilayer application with oil-based inks.

  The problem to be solved by the present invention is to enable simultaneous multi-layer coating with an oil-based ink using an oil-soluble resin, so that an oil-based receiving layer forming ink of an existing image receiving sheet can also be used in the simultaneous multi-layer coating method. Thus, an object of the present invention is to provide a sublimation transfer image-receiving sheet having good printing characteristics in which a part of the laminated layers is crosslinked.

  Another object of the present invention is to provide a method for producing a sublimation transfer image receiving sheet in which both an oil-based ink and a water-based ink can be simultaneously applied in multiple layers since water-based ink has advantages of water-based ink.

  1st invention forms the heat insulation layer containing a hollow particle on a base | substrate, forms a cushion layer on this heat insulation layer, and forms sublimation transfer formed on this cushion layer on an oil-based receiving layer. In the image receiving sheet, a layer crosslinked with a crosslinking agent is formed between the heat insulating layer and the cushion layer, and the crosslinked layer is at least of the crosslinked heat insulating layer and the cushion layer crosslinked. It is a sublimation transfer image receiving sheet, which is any one layer.

2nd invention forms sublimation transfer which forms the heat insulation layer containing a hollow particle on a base | substrate, forms a cushion layer on this heat insulation layer, and forms an oil-based receiving layer on this cushion layer. in the image-receiving sheet, the heat insulation layer from the substrate side, a heat insulating layer that is not at least crosslinked, heat-insulating layer which is crosslinked, the first, characterized in that heat-insulating layer is formed in order of the heat insulating layer which is not crosslinked It is a sublimation transfer image receiving sheet described in the invention .

The third invention provides a heat insulating layer forming ink, a crosslinking agent ink, a cushion layer forming ink and an oily receiving layer forming ink, and among the heat insulating layer forming ink and the cushion layer forming ink, At least one ink contains a resin that can be cross-linked by the cross-linking agent of the cross-linking agent ink, and from each of the inks, an ink liquid layer for forming a heat insulating layer, a cross-linking ink liquid layer, an ink liquid layer for forming a cushion layer, and a receiving layer. A layer forming ink liquid layer is formed, and at least a laminated structure is formed in the order of the heat insulating layer forming ink liquid layer, the crosslinking agent ink liquid layer, the cushion layer forming ink liquid layer, and the receiving layer forming ink liquid layer. The ink liquid layers are stacked as described above, and the ink liquid layer having the laminated structure is applied to a substrate and dried.

According to a fourth aspect of the present invention, a heat insulating layer forming ink, a cushion layer forming ink, a cross-linking agent ink and an oily receiving layer forming ink are prepared, and among the cushion layer forming ink and the receiving layer forming ink, At least one ink contains a resin that can be cross-linked by the cross-linking agent of the cross-linking agent ink, and from each of the inks, an ink liquid layer for forming a heat insulating layer, an ink liquid layer for forming a cushion layer, a cross-linking agent ink liquid layer, and a receiving agent. A layer forming ink liquid layer is formed, and at least a laminated structure is formed in the order of the heat insulating layer forming ink liquid layer, the cushion layer forming ink liquid layer, the cross-linking agent ink liquid layer, and the receiving layer forming ink liquid layer. The ink liquid layers are stacked as described above, and the ink liquid layer having the laminated structure is applied to a substrate and dried.

  The sublimation transfer image-receiving sheet having the constitution of the present invention can be produced by simultaneously applying a multi-layer of oil-based ink and water-based ink. Further, a sublimation transfer image-receiving sheet can be produced by applying a plurality of oil-based inks at the same time in multiple layers. Further, there is a crosslinked layer in the laminated structure of the sublimation transfer image receiving sheet, and a sublimation transfer image receiving sheet having good image characteristics can be obtained.

It is a schematic diagram which shows an example of the simultaneous multilayer coating apparatus which can be used for manufacture of the sublimation transfer image receiving sheet in this invention. It is a schematic cross section of one embodiment of a sublimation transfer image receiving sheet in the present invention. It is a schematic cross section of one embodiment of a sublimation transfer image receiving sheet in the present invention. It is a schematic cross section of one embodiment of a sublimation transfer image receiving sheet in the present invention. It is a schematic cross section of one embodiment of a sublimation transfer image receiving sheet in the present invention.

<Simultaneous multilayer coating method>
Below, the example of the simultaneous multilayer coating method of this embodiment is demonstrated, referring drawings.

  FIG. 1 is a schematic view showing an example of a simultaneous multilayer coating method. The die coating unit 11 has slits 1, 2, and 3 for extruding ink. Although not shown, the number of slits is not limited to 3 and can be any number. In addition, any number of associated facilities and the like are possible.

  Each ink is stored in the ink tank 1t, the ink tank 2t, and the ink tank 3t, and each ink is pushed out by the ink supply pump 1p, the ink supply pump 2p, and the ink supply pump 3p. The ink extruded from each slit is developed as an ink liquid layer on the slide slope of the die coating unit, and the upper ink liquid layer runs on the lower ink liquid layer so that the slide slope of the die coating unit 11 is obtained. The ink liquid layer is stacked on top.

  The method of stacking the ink liquid layer includes a method in which a plurality of slit nozzles are arranged above the slide slope, the ink is poured in a curtain shape from above and stacked on the slide slope, and is not limited to the coating method of FIG.

  Reference numerals 1s, 2s, and 3s denote ink liquid layers formed from the respective inks. Similarly, the ink liquid layer can be overlapped with 4s, 5s, 6s, 7s. (Not shown)

  The substrate 5 wound around the coating roll 4 is guided to the rotating coating roll 4, scoops up the stacked ink liquid layer that tends to flow down from the end of the die coating unit 11, and the ink liquid stacked on the substrate 5. After the layer is applied, the ink is dried in a drying furnace 6 to produce a sublimation transfer image receiving sheet.

  The amount of each ink applied to the substrate is controlled by the amount of ink extruded from each slit of the die coating unit 11 and the substrate conveyance speed. By increasing the transport speed of the substrate, it is possible to apply a thin film even if the amount of ink extrusion is the same.

  In the present invention, the ink is not particularly limited to those containing a coloring pigment, and transparent ink is also included as the ink. The oil-based ink is an ink mainly composed of an oil-soluble resin and an organic solvent. The oil-based receiving layer is a receiving layer obtained by applying and drying the oil-based ink, and does not indicate a receiving layer obtained by applying and drying an aqueous emulsion ink.

<Embodiment of the Invention>
First aspect of the present invention:
In order to obtain the sublimation transfer image receiving sheet of the first invention, for example, the heat insulating layer forming ink is stored in the ink tank 1t, the crosslinking agent ink is stored in the ink tank 2t, and the cushion layer forming ink is stored in the ink tank 3t. The receiving layer forming ink is stored in the ink tank 4t. The ink tank 4t and the equipment above it and the ink liquid layer are not shown. One of the heat insulating layer forming ink and the cushion layer forming ink contains a resin that can be cross-linked with a cross-linking agent. Alternatively, both the heat insulating layer forming ink and the cushion layer forming ink contain a resin that can be cross-linked with a cross-linking agent. Here, the ink for forming the receiving layer is an oil-based ink, and the ink for forming the heat insulating layer is an ink containing hollow particles.

  Insulation layer forming ink, cross-linking agent ink, cushion layer forming ink and receiving layer forming ink are supplied from each ink supply pump, pushed out from each slit, and developed on the slope of the die coating unit to form a heat insulating layer. Insulating liquid layer, crosslinker ink liquid layer, cushion layer forming ink liquid layer and receiving layer forming ink liquid layer are formed, and the upper ink liquid layer rides on the lower ink liquid layer in sequence. A first laminated structure of the ink liquid layer is formed by stacking the forming ink liquid layer, the cross-linking agent ink liquid layer, the cushion layer forming ink liquid layer, and the receiving layer forming ink liquid layer in this order.

  When the first laminated structure is stacked, the crosslinking agent in the crosslinking agent ink liquid layer is mixed with the heat insulating layer forming ink liquid layer and a part of the cushion layer forming ink liquid layer to form a heat insulating layer forming ink liquid layer. The crosslinkable resin contained in the ink liquid layer for forming the cushion layer is crosslinked to form a hardly soluble or insoluble reaction product. Alternatively, the crosslinkable resins in both ink liquid layers are crosslinked to form a hardly soluble or insoluble reaction product. In any case, a hardly soluble or insoluble reaction product layer is formed at the boundary between the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer.

  The formed hardly soluble or insoluble reaction product functions to prevent the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer from mixing, and part of both ink liquid layers are cross-linked. The fluidity of the ink liquid layer is lowered, the fluidity of the entire first laminated structure is lowered, and the first laminated structure is not disturbed even during drying.

By applying the ink liquid layer laminate having the first laminated structure in such a state to the substrate and drying, a heat insulating layer is formed on the substrate of the first aspect, and the cushion is formed on the heat insulating layer. In the sublimation transfer image-receiving sheet formed by forming a layer and forming a receiving layer on the cushion layer, a layer crosslinked with a crosslinking agent is formed between the heat insulating layer and the cushion layer, A sublimation transfer image-receiving sheet can be obtained in which the crosslinked layer is at least one of a crosslinked heat insulating layer and a crosslinked cushion layer.
When both the heat insulating layer and the cushion layer are cross-linked at the boundary between the two layers, the adhesion between the two layers becomes better.

In the region where the crosslinker ink liquid layer is in contact with the heat insulating layer forming ink liquid layer or the cushion layer forming ink liquid layer, the crosslinker and the resin having a functional group that reacts with the crosslinker are mixed to undergo a crosslink reaction. Since the cross-linked resin exists as an insoluble or hardly soluble product, the ink existing above and below the product cannot move through the product and further mixing of both inks is inhibited. Therefore, the crosslinkable resin in the vicinity of the crosslinker ink liquid layer crosslinks, but the crosslinkable resin contained in the layer in a region away from the crosslinker ink liquid layer remains uncrosslinked.
This is the first method for obtaining the sublimation transfer image receiving sheet of the first embodiment.

  The second method of obtaining the sublimation transfer image-receiving sheet of the first aspect is to deposit an insoluble resin between the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer to form a laminated structure of the ink liquid layer. This is a method of drying in a maintained state and then post-curing the resin deposited at the time of application.

  For example, the resin X dissolved in at least one of the heat insulating layer forming ink and the cushion layer forming ink has a reactive group, the cross-linking agent ink contains a cross-linking agent, and the cross-linking agent ink solvent. If the resin X is insoluble, the resin X is deposited when the crosslinker ink liquid layer comes into contact with it, and mixing of the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer is prevented.

Since the precipitated resin X contains the crosslinking agent in the crosslinking agent ink, the precipitated resin X and the crosslinking agent can be post-crosslinked to form a crosslinked layer.
The method of post-crosslinking can be crosslinked by heating or irradiating an electron beam, ultraviolet rays or visible light.

  The third method for obtaining the sublimation transfer image-receiving sheet of the first aspect is, for example, to contain a crosslinking agent in the heat insulating layer forming ink and to contain a resin that reacts with the crosslinking agent in the cushion layer forming ink. In the simultaneous multilayer coating method, drying can be performed while maintaining the laminated structure of both ink liquid layers. Alternatively, it is also possible to include a cross-linking agent in the cushion layer forming ink, and to include a resin that reacts with the cross-linking agent in the heat insulating layer forming ink. It can be dried while being maintained, and a sublimation transfer image receiving sheet can be obtained.

  Also, in the third method, in the same way as in the second method, the insoluble resin is deposited in the area where both ink liquid layers are in contact with each other, and the two ink liquid layers are prevented from mixing, and the laminated structure is applied. The sublimation transfer image-receiving sheet of the first aspect can also be obtained by a method of post-crosslinking the deposited resin after drying.

  In the third method, since the unreacted crosslinking agent remains in any layer, it is necessary to select the crosslinking agent so as not to affect the performance of the sublimation transfer image receiving sheet. When the crosslinker ink is used separately from the layer forming ink, the crosslinker ink can be adjusted so as not to be excessively extruded, so that a large amount of unreacted crosslinker remains and affects the performance of the sublimation transfer image receiving sheet. Never give.

  If the ink liquid layer for forming the cushion layer is mixed indefinitely at the boundary region with the ink liquid layer for forming the heat insulating layer, the effective thickness of the cushion layer is reduced, and the cushion effect during image printing on the thermal head is reduced. Therefore, the heat insulation layer and the cushion layer are separated as a clear layer without mixing indefinitely, and the effective thickness of the cushion layer has a cushioning effect corresponding to the amount of cushion layer forming ink applied. It can be secured.

  The receiving layer of the sublimation transfer image receiving sheet receives a large amount of heat from the thermal head and at the same time is pressed, so that the surface of the receiving layer is easily deformed. When the cushion layer located under the receiving layer is deformed into the heat insulating layer in accordance with the deformation of the receiving layer, the deformation of the receiving layer is increased. Since part of the boundary area between the cushion layer and the heat insulation layer is cross-linked, the deformation of the surface of the receiving layer during image printing can be reduced to reduce the deformation of the cushion layer into the heat insulation layer. it can.

  Further, since a part of the boundary region between the cushion layer and the heat insulating layer is cross-linked, the cushion effect of the cushion layer can be utilized to the maximum with the same effect as when a hard plate is placed under the cushion layer. For this reason, the adhesion between the sublimation transfer image receiving sheet and the thermal head during printing is improved, and image omission is reduced, and a good image can be obtained.

Second aspect of the present invention:
In order to obtain the sublimation transfer image-receiving sheet according to the second aspect of the present invention, for example, the ink for forming a heat insulation layer is stored in the ink tank 1t, the ink for forming the cushion layer is stored in the ink tank 2t, and the ink tank 3t is crosslinked. The agent ink is stored, and the receiving layer forming ink is stored in the ink tank 4t. The ink tank 4t and the equipment above it and the ink liquid layer are not shown.
One of the cushion layer forming ink and the receiving layer forming ink contains a resin that can be crosslinked by a crosslinking agent. Alternatively, both the ink for forming the cushion layer and the ink for forming the receiving layer contain a resin that can be crosslinked with a crosslinking agent.
Here, the ink for forming the receiving layer is an oil-based ink, and the ink for forming the heat insulating layer is an ink containing hollow particles.

  Insulation layer formation ink, cushion layer formation ink, crosslinker ink, and receiving layer formation ink are supplied from each ink supply pump, extruded from each slit, and developed on the slope of the die coating unit to form a heat insulation layer. Ink liquid layer, cushion layer forming ink liquid layer, crosslinker ink liquid layer and receptor layer forming ink liquid layer are formed, and heat insulating layer forming ink liquid layer, cushion layer forming ink liquid layer, crosslinking The second layered structure of the ink liquid layer is formed by stacking the agent ink liquid layer and the ink layer for forming the receiving layer in this order.

By applying a laminate of the ink layer of the second laminated structure to the substrate and drying, a heat insulating layer is formed on the substrate of the second aspect, and a cushion layer is formed on the heat insulating layer, In the sublimation transfer image-receiving sheet formed with a receptor layer on the cushion layer, a layer crosslinked with a crosslinking agent is formed between the cushion layer and the receptor layer, and the crosslinked layer is A sublimation transfer image-receiving sheet, which is at least one of a crosslinked cushion layer and a crosslinked receiving layer, can be obtained.
When both the cushion layer and the receiving layer are cross-linked at the boundary between the two layers, the adhesion between the two layers becomes better.

In the region where the crosslinker ink liquid layer is in contact with the cushion layer forming ink liquid layer or the receiving layer forming ink liquid layer, the crosslinker and the resin having a functional group that reacts with the crosslinker are mixed to undergo a crosslinking reaction. Since the cross-linked resin exists as an insoluble or hardly soluble product, the ink existing above and below the product cannot move through the product and further mixing of both inks is inhibited. Therefore, the crosslinkable resin in the vicinity of the crosslinker ink liquid layer crosslinks, but the crosslinkable resin contained in the layer in a region away from the crosslinker ink liquid layer remains uncrosslinked.
This is the first method for obtaining the sublimation transfer image receiving sheet of the second embodiment.

  A second method for obtaining the sublimation transfer image-receiving sheet of the second aspect is to deposit an insoluble resin between the ink liquid layer for forming the cushion layer and the ink liquid layer for forming the receiving layer, thereby forming a laminated structure of the ink liquid layer. This is a method of drying in a maintained state and then post-curing the resin deposited at the time of application.

  For example, the resin Y dissolved in at least one of the cushion layer forming ink and the receiving layer forming ink has a reactive group, the crosslinking agent ink contains a crosslinking agent, and the crosslinking agent ink solvent. If the resin Y is insoluble, the resin Y is deposited when the crosslinker ink liquid layer comes into contact with it, and mixing of the cushion layer forming ink liquid layer and the receiving layer forming ink liquid layer is prevented.

  Since the precipitated resin Y also contains a crosslinking agent in the crosslinking agent ink, the precipitated resin Y and the crosslinking agent can be post-crosslinked to form a crosslinked layer.

  The third method for obtaining the sublimation transfer image-receiving sheet of the second aspect is, for example, to contain a cross-linking agent in the cushion layer forming ink and to contain a resin that reacts with the cross-linking agent in the receiving layer forming ink. In the simultaneous multilayer coating method, drying can be performed while maintaining the laminated structure of both ink liquid layers. Alternatively, it is possible to maintain the laminated structure of both ink liquid layers in the simultaneous multilayer coating method by including a cross-linking agent in the receiving layer forming ink and a resin that reacts with the cross-linking agent in the cushion layer forming ink. As it is, it can be dried and a sublimation transfer image receiving sheet can be obtained.

  Also, in the third method, in the same way as in the second method, the insoluble resin is deposited in the area where both ink liquid layers are in contact with each other, and the two ink liquid layers are prevented from mixing, and the laminated structure is applied. The sublimation transfer image-receiving sheet of the second aspect can also be obtained by a method of post-crosslinking the deposited resin after drying.

  The amount of dye that can be dyed in the receiving layer is limited. Therefore, if the thickness of the receiving layer is thin, the reflection density of the printed image does not increase. As the receiving layer becomes thicker, the dyeing amount increases and the reflection density of the image increases. However, as the receptor layer becomes thicker, the amount of heat required to raise the temperature of the resin in the receptor layer also increases. On the other hand, since there is an upper limit to the maximum amount of heat that can be supplied from the thermal head, the maximum arrival temperature of the receiving layer resin also decreases as the amount of resin in the receiving layer increases. There is a saturation value of the maximum reflection density according to the type of the receiving layer resin.

  Increasing the amount of the ink layer for forming the receiving layer to obtain the maximum reflection density causes the ink layer for forming the receiving layer to flow during drying, depending on the viscosity of the ink. May be disturbed. At that time, a crosslinker ink liquid layer is introduced between the ink liquid layer for forming the receiving layer and the ink liquid layer for forming the cushion layer, and a part of the boundary area between the ink for forming the cushion layer and the ink for forming the receiving layer is formed. The sublimation transfer image-receiving sheet of the third aspect in which a part of the ink layer for forming a receiving layer is crosslinked by crosslinking can obtain a receiving layer having a smooth surface and a high reflection density. it can.

When you press the sponge with your finger, pressure is applied only to the part of the finger, and only the bottom of the finger is dented, but when you place the underlay on the sponge and press with your finger, the pressure is dispersed and only the bottom of the finger does not dent .
Since a part of the boundary region between the cushion layer and the receiving layer is cross-linked, when the thermal head heats and presses the receiving layer, the pressure is dispersed with the same effect, so that the surface of the receiving layer is deformed. Can be reduced. At the same time, deformation of the sublimation transfer image receiving sheet due to image printing can be prevented.

  The fluidity of the stacked ink liquid layers increases as the ink liquid layers become thicker. If the ink liquid layer flows during drying due to the thick ink liquid layer and the surface shape becomes rough, the supply amount of the ink liquid layer is divided and extruded from two slits as in the third aspect. By inserting a crosslinker ink liquid layer between the liquid layers, the surface properties of the sublimation transfer image-receiving sheet after drying can be improved.

Third aspect of the present invention:
In order to obtain the sublimation transfer image-receiving sheet of the third aspect of the present invention, for example, the ink for forming the heat insulating layer is stored in the ink tank 1t, the cross-linking agent ink is stored in the ink tank 2t, and the heat insulating layer is formed in the ink tank 3t. Ink tank is stored, crosslinker ink is stored in ink tank 4t, cushion layer forming ink is stored in ink tank 5t, crosslinker ink is stored in ink tank 6t, and receiving layer forming ink is stored in ink tank 7t. Store. The ink tanks 4t to 7t and the equipment and the ink liquid layer are not shown. Here, the ink for forming the receiving layer is an oil-based ink, and the ink for forming the heat insulating layer is an ink containing hollow particles.

  The heat insulating layer forming ink contains a crosslinkable resin, and any one of the cushion layer forming ink and the receiving layer forming ink contains a resin that can be cross-linked with a cross-linking agent. . Alternatively, both the ink for forming the cushion layer and the ink for forming the receiving layer contain a resin that can be crosslinked with a crosslinking agent.

  Insulation layer forming ink, cross-linking agent ink, cushion layer forming ink and receiving layer forming ink are supplied from each ink supply pump, pushed out from each slit, and developed on the slope of the die coating unit to form a heat insulating layer. Ink liquid layer, crosslinker ink liquid layer, cushion layer forming ink liquid layer and receptor layer forming ink liquid layer are formed, and heat insulating layer forming ink liquid layer, cross-linking agent ink liquid layer, heat insulating layer formation are sequentially formed. An ink liquid layer, a crosslinker ink liquid layer, a cushion layer forming ink liquid layer, a crosslinker ink liquid layer, and a receiving layer forming ink liquid layer are stacked to form a third laminated structure of the ink liquid layer.

  The laminated body of the ink layer of the third laminated structure is applied to the substrate and dried to form a heat insulating layer on the substrate, a cushion layer is formed on the heat insulating layer, and the cushion layer is formed on the cushion layer. In the sublimation transfer image-receiving sheet formed with a receiving layer, the heat insulating layer is formed from the substrate side in the order of at least a non-crosslinked heat insulating layer, a crosslinked heat insulating layer, and a non-crosslinked heat insulating layer. The sublimation transfer image receiving sheet according to any one of the first and second aspects can be obtained.

  In addition to the above method, the sublimation transfer image receiving sheet of the third aspect can be produced by the same method as the second and third methods shown in the first aspect and the second aspect.

  The amount of heat supplied from the thermal head heats the dye transfer sheet to sublimate the dye in the dye transfer sheet and diffuse it into the receiving layer. At the same time, the amount of heat applied from the thermal head raises the temperature of the resin in the receiving layer and promotes dye diffusion. If the amount of heat from the thermal head heats only the receiving layer of the sublimation transfer image receiving paper and the temperature of the other layers does not increase, a sublimation transfer image receiving sheet with high thermal efficiency and high sensitivity can be obtained. For this purpose, a heat insulating layer is necessary.

  The heat insulating layer serves to efficiently heat the receiving layer by preventing the amount of heat applied from the thermal head from flowing unnecessarily to the substrate side. If the heat insulation layer is not thicker than the other layers, the heat insulation effect cannot be obtained, so when the ink liquid layers are stacked, the ink liquid layer of the heat insulation layer becomes thick and flows during drying to flow on the surface of the sublimation transfer image receiving sheet. May be disturbed.

  As a method for preventing this, heat-insulating layer forming ink is supplied from two slits, cross-linking agent ink is supplied between both slits, and the heat-insulating layer-forming ink liquid layer is divided into two, and the center is a cross-linking agent. By forming a hardly soluble or insoluble reaction product with the ink, the flow of the heat-insulating layer forming ink is prevented from drying, and even if a heat-insulating layer having a thickness that provides a heat-insulating effect is formed, the sublimation transfer image-receiving sheet It is possible to prevent the coating surface from being disturbed.

  In heat conduction due to heating, heat is conducted as vibration energy of a heated molecule is transmitted to adjacent molecules. If there is a cross-linked layer in a part of the heat insulation layer, the movement of the cross-linked molecule is limited, so even if it is given vibration energy by heat, it cannot vibrate in the same way as a non-cross-linked molecule. Transmission is slow. In other words, the heat insulating layer that is cross-linked has a lower thermal conductivity than the heat-insulating layer that is not cross-linked, so the presence of the cross-linked heat insulating layer increases the heat insulating effect and efficiently records the heat quantity of the thermal head. Can be used.

Fourth aspect:
According to a fourth aspect of the present invention, a heat insulating layer forming ink, a crosslinking agent ink, a cushion layer forming ink, and an oil-based receiving layer forming ink are prepared, and the heat insulating layer forming ink and the cushion layer forming ink are prepared. Among these, at least one of the inks contains a resin that can be cross-linked by the cross-linking agent of the cross-linking agent ink, and from each of the inks, an ink liquid layer for forming a heat insulating layer, a cross-linking agent ink liquid layer, for forming a cushion layer An ink liquid layer and a receiving layer forming ink liquid layer are formed, and at least a heat insulating layer forming ink liquid layer, a cross-linking agent ink liquid layer, a cushion layer forming ink liquid layer, and a receiving layer forming ink liquid layer are stacked in this order. A method for producing a sublimation transfer image-receiving sheet, wherein the ink liquid layers are stacked so that a structure is formed, the ink liquid layer having the laminated structure is applied to a substrate and dried.

Fifth aspect:
According to a fifth aspect of the present invention, a heat insulating layer forming ink, a cushion layer forming ink, a cross-linking agent ink, and an oily receiving layer forming ink are prepared, and the cushion layer forming ink and the receiving layer forming ink are prepared. Among these, at least one of the inks contains a resin that can be cross-linked by the cross-linking agent of the cross-linking agent ink, and from each of the inks, an ink liquid layer for forming a heat insulating layer, an ink liquid layer for forming a cushion layer, a cross-linking agent Form an ink liquid layer and an ink liquid layer for receiving layer formation, and laminate at least an ink liquid layer for heat insulation layer formation, an ink liquid layer for cushion layer formation, a crosslinker ink liquid layer, and an ink liquid layer for reception layer formation. A method for producing a sublimation transfer image-receiving sheet, wherein the ink liquid layers are stacked so that a structure is formed, the ink liquid layer having the laminated structure is applied to a substrate and dried.

<Crosslinking reaction and reactive polymer compound and crosslinking agent>
In the present invention, it is desirable that an insoluble product or a hardly soluble product is rapidly formed when the crosslinker ink liquid layer comes into contact with another ink liquid layer. At this time, there are a case where an insoluble reactant or a hardly soluble reactant is generated by a crosslinking reaction, and a case where an insoluble product or a hardly soluble product is first precipitated, and then a crosslinked product is formed by a post-reaction with a crosslinking agent.

  Various reactions can be used in the reaction to produce an insoluble or hardly soluble reaction product when the ink liquid layer and another ink liquid layer are in contact with each other. Although not particularly limited, for example, (A) crosslinkability A method of producing an insoluble or hardly soluble reaction product by reacting the above polymer compound with a crosslinking agent. (B) A component dissolved in a soluble solvent is brought into contact with an insoluble solvent to form a hardly soluble or insoluble product, and then the hardly soluble or insoluble with a crosslinking agent contained in the insoluble solvent. There is a method of crosslinking the product.

  The composition of the crosslinker ink is preferably such that the crosslinker and the solvent are the main components and the other components are small. When the viscosity of the crosslinker ink is too low to be developed as an ink liquid layer, a small amount of a polymer compound may be added as a thickener. When the reactive component of the crosslinking agent is a polymer compound, it is not necessary to add another polymer compound. Also, the extrusion amount of the crosslinking agent ink may react with the reactive resin to supply only the amount necessary to maintain the laminated structure, so that it does not remain as an independent crosslinking agent layer in the sublimation transfer image receiving sheet. preferable.

  The polymer compound having a reactive functional group to be contained in the heat insulating layer forming ink, the cushion layer forming ink or the receiving layer forming ink is not particularly limited, but a hydroxyl group, a carboxyl group, an amino group, Polymer compounds having an epoxy group, for example, a polyvinyl alcohol resin, a polyvinyl butyral resin, a polyacetal resin, a polyamine resin, a polyphenol resin, an epoxy resin, a melamine resin, an oil-soluble resin such as a polycarboxylic acid resin, a water-soluble resin, or an aqueous emulsion Resin. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the cross-linking agent that reacts with the polymer compound having a reactive functional group include cross-linkable titanium compounds such as titanium hydroxide and organic titanium chelate compounds; γ-aminopropyltrimethoxysilane, γ-aminopropylethoxysilane Silane coupling agents such as N- [2- (vinylbenzylamino) ethyl] -3-aminopropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyltrimethoxysilane; oxazoline-based crosslinking agents Polyisocyanate compounds such as hexamethylene diisocyanate, tolylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate; various polyfunctional epoxy compounds; polyfunctional amine compounds; crosslinkable zirconium compounds; triazine-based crosslinkers; Imide-based crosslinking agent; formaldehyde; melamine, and the like. These may be used individually by 1 type and may use 2 or more types together.

  For example, a reaction between an organic titanium compound and a hydroxyl group or other functional group is suitable for generating an insoluble or hardly soluble reaction product by a crosslinking reaction when the crosslinker ink liquid layer comes into contact with another ink liquid layer. Alternatively, chelate crosslinking reaction, neutralization reaction of acid and base, etc. are suitable for the present invention because of their fast reaction. A cross-linking agent that requires a long time for the cross-linking reaction can be used in a reaction for post-crosslinking after forming a laminate on a substrate.

  In order to deposit an insoluble resin when the crosslinker ink liquid layer is in contact with another ink liquid layer, a non-affinity solvent may be brought into contact with the resin dissolved in the affinity solvent. The solvent and the non-affinity solvent must be compatible with each other. Even if a solvent that is not compatible is brought into contact with each other, it is not mixed, so it cannot be used in the present invention. In the case of organic solvents, most organic solvents are soluble in each other and can be used in the present invention.

  When the crosslinking agent ink is a water-based ink, the other layer forming ink must contain water or a solvent having an affinity for water. When the layer forming ink is a water-based ink, the crosslinking agent ink must contain water or a solvent having an affinity for water.

  Examples of the solvent having affinity for water include lower alcohols such as methanol, ethanol, isopropyl alcohol and glycol; cyclic ethers such as dioxane and tetrahydrofuran; ketones such as acetone and methyl ethyl ketone.

<Configuration of sublimation transfer image receiving sheet>
Hereinafter, materials that can be used for the sublimation transfer image receiving sheet of the present invention will be described.
(1) Substrate As a substrate on which ink is applied, natural pulp, synthetic pulp, pulp paper made from a mixture thereof, coated paper, art paper, cast coated paper, ivory, white paperboard called coated ivory, high-quality white paperboard, etc. Alternatively, resin-coated paper (RC paper) obtained by extruding a molten resin on the surface of the paper and coating the resin can be used.

  Alternatively, as a synthetic paper, YUPO (registered trademark) and Super YUPO (registered trademark) manufactured by Yupo Corporation, Peach Coat (registered trademark) manufactured by Nisshinbo Paper Products Co., Ltd., and the like can also be used as a substrate.

  White polyester films in which a white pigment or the like is dispersed in a polyester film are sold by Toray Industries, Inc. and Teijin DuPont Films, Inc., both of which can be used as a substrate. Alternatively, various transparent plastic films can be used as the substrate depending on the application.

(2) Receptor layer [Receptor layer resin]
The material constituting the receiving layer is for receiving a heat transferable dye transferred from the thermal transfer sheet, for example, a sublimation (heat transferable) dye, and holding an image formed by receiving. The following oil-soluble synthetic resins, water-soluble synthetic resins, or aqueous emulsion resins can be used alone or in combination of two or more.
For example, polyester resin, polyacrylate resin, polycarbonate resin, polyvinyl acetate resin, styrene acrylate resin, vinyl toluene acrylate resin, polyurethane resin, polyamide resin, polyimide resin, ethylene-vinyl acetate copolymer, ionomer resin, urea resin Polycaprolactone resin, polystyrene resin, polyvinyl chloride resin, polyacrylonitrile resin, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-acrylic copolymer resin, and the like can be used.

Among the synthetic resins as described above, polyester resins, vinyl chloride-vinyl acetate copolymer resins, and vinyl chloride-acrylic copolymer resins are particularly preferable.
In any of the above resins, the image receiving layer is used for the purpose of improving the whiteness of the image receiving layer to further enhance the clarity of the transferred image, imparting writing properties to the surface of the transferred sheet, and preventing bleeding of the transferred image. White pigment can be added in the layer.
In order to further improve the light resistance of the transferred image, an ultraviolet absorber and / or a light stabilizer can be added to the image receiving layer.

[Release agent]
In order to prevent thermal fusion with a transfer film on which a sublimation dye is printed during recording with a thermal head, a release agent is added to the receiving layer. For example, known materials such as silicone oil, phosphate ester compounds, fluorine compounds, and the like can be mentioned, and silicone oil is particularly preferable. Examples of silicone oils include epoxy-modified silicone oil, alkyl-modified silicone oil, amino-modified silicone oil, fluorine-modified silicone oil, phenyl-modified silicone oil, epoxy / polyether-modified silicone oil, vinyl-modified silicone oil, and hydrogen-modified silicone oil. Modified silicone oil is preferred.

  A release agent is added to the receiving layer in order to prevent thermal fusion with the transfer film. Although the amount of the release agent depends on the type of the release agent, it is added in an amount of 5 to 0.5 parts by weight, preferably 3 to 1 part by weight, per 100 parts by weight of the receiving layer resin. As the release agent, modified silicone oil, fluorine compound and the like are preferable.

It is preferable that the thickness of the receiving layer is ^{1.8g / m 2 ~3.5g / m 2} , it is particularly preferably ^{2.5g / m 2 ~3.0g / m 2} .

(3) Thermal insulation layer Thermal insulation particles and a binder are used for the thermal insulation layer. The heat insulating particles are preferably hollow particles having a large porosity. As the binder, a polymer compound having a reactive functional group and a non-reactive polymer compound can be used. Alternatively, only a polymer compound having a reactive functional group may be used. The polymer compound having a reactive functional group may be one type or a combination of two or more types.
The heat insulating layer needs to be thicker than other layers, and if necessary, it may be applied in two layers.

[Insulating particles]
In order to obtain a good image by sublimation transfer recording, the structure of the sublimation transfer image receiving sheet is also important.
In order for heat from the thermal head to be efficiently transferred to the resin of the receiving layer, cushioning is required for the thermal head and the receiving layer to be in close contact with each other. In addition, the applied heat increases the temperature of the receiving layer resin to promote dyeing. However, if the heat escapes toward the substrate, the temperature of the receiving layer resin decreases, so that the heat does not escape downward. Is also necessary.

  In order to provide heat insulating properties and cushioning properties, as one method, a layer in which heat insulating particles are dispersed can be placed between the substrate and the receiving layer. The heat insulating particles are not particularly limited as long as they can impart heat insulating properties to either hollow particles or non-hollow particles. An ink for forming a heat insulation layer can be obtained by dispersing the following particles in a resin and adding necessary additives.

  For example, inorganic particles such as glass and silica particles, styrene resins such as crosslinked styrene-acrylic resins, acrylic resins such as acrylonitrile-acrylic resins, methacrylic resins, phenolic resins, fluorine Particles such as resin, polyamide resin, polyimide resin, polycarbonate resin, and polyether resin can be used.

Commercially available products include styrene acrylic SX series highly crosslinked hollow particles and high hollowness hollow particles manufactured by JSR Corporation. There are acrylic hollow particles and non-hollow particles under the name of Sekisui Chemical Co., Ltd., Advancel HP (registered trademark). There are methacrylic acid ester type and styrene type hollow particles under the name of Gantz Kasei Co., Ltd. and Gantz Pearl (registered trademark). Rohm and Haas also sells hollow particle emulsions.
An inorganic silica hollow particle has a hollow nano silica material under the name of Sirenax (registered trademark) manufactured by Nippon Steel & Mining Co., Ltd.

The hollow particles are preferably styrene-acrylic hollow particles, methacrylic ester hollow particles, and styrene hollow particles. Moreover, the heat insulation layer has a certain degree of cushioning properties by containing hollow particles.
The proportion of the binder and the heat insulating particles is preferably 250 parts by weight to 100 parts by weight, and particularly preferably 200 parts by weight to 150 parts by weight with respect to 100 parts by weight of the binder.

It is preferable that the thickness of the heat insulating layer is ^{4.0g / m 2 ~8.0g / m 2} , it is particularly preferably ^{4.5g / m 2 ~6.0g / m 2} . Insulation layer

(4) Cushion layer When the heat insulation and cushioning properties cannot be satisfied with only the heat insulation layer, a cushion layer is required. For example, rubber latex is used as a crosslinkable aqueous resin and a binder that provides cushioning properties. The oil-soluble resin can be made into a cushion layer by crosslinking after applying various rubbers. Heat insulation is also required for the cushion layer, and hollow particles are also used. However, since hollow particles may be deformed by the heat and pressure of the thermal head, particles with high heat resistance are preferred even if the porosity is small. The

  The rubber latex imparting cushioning properties to 100 parts by weight of the crosslinkable aqueous resin is preferably 300 parts by weight to 50 parts by weight, and particularly preferably 200 parts by weight to 100 parts by weight.

The ratio of the binder and the heat insulating particles is preferably 250 parts by weight to 100 parts by weight, particularly preferably 160 parts by weight to 125 parts by weight with respect to 100 parts by weight of the binder. By putting particles, the cushion layer also has a certain degree of heat insulation.
It is preferable that the thickness of the cushion layer is preferably ^{2.5g / m 2 ~4.0g / m 2} , in particular ^{3.0g / m 2 ~3.5g / m 2} .

For the receiving layer, cushion layer, and heat insulating layer, extender pigments can be used as necessary. Extender pigments are white or transparent inorganic particles that are used for matting and dilution of other colored pigments; aluminum hydroxide, calcium carbonate, titanium oxide, barium sulfate, silicon oxide, talc, calcium sulfate Bentonite, barium titanium, zinc oxide, etc. are used.
Furthermore, various additives, for example, antioxidants, ultraviolet absorbers, light stabilizers, leveling agents, antifoaming agents, fillers and the like can be contained in each ink as necessary.

  Examples of the sublimation transfer image receiving sheet of the present invention will be described below.

(Example 1)
A sublimation transfer image receiving sheet was prepared by the following procedure.
The ink A for heat-insulating layer formation was obtained from the following composition.
Acrylic / urethane emulsion “Part No. WEM-200U”: 120 parts by weight (40% solids manufactured by Taisei Fine Chemical Co., Ltd.)
Polyvinyl alcohol “GOHSENOL (registered trademark) GM-14”: 10 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Cross-linked styrene-acrylic particles "High hollowness type SX8782 (A)": 145 parts by weight (manufactured by JSR Corporation, hollowness 55%, solid content 24%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 75 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Ion exchange water: 370 parts by weight

Cushion layer forming ink B was obtained from the following composition.

Polyvinyl alcohol “GOHSENOL (registered trademark) GM-14”: 10 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Styrene-butadiene latex “Nipol LX407G”: 80 parts by weight (manufactured by Zeon Corporation, solid content 50%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 200 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Ion exchange water: 360 parts by weight

Crosslinker ink C was obtained from the following composition.
Organic Titanium Compound “Orgatyx (registered trademark) ТC-400”: 30 parts by weight (manufactured by Matsumoto Fine Chemical Co., Ltd., solid content 80%)
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 2 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Isopropyl alcohol / methyl ethyl ketone (weight ratio 1: 1): 100 parts by weight

A receiving layer forming ink D was obtained from the following composition.
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 100 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Epoxy-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-393): 5 parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-343): 5 parts by weight of methyl ethyl ketone / toluene (weight ratio of 1: 1) : 620 parts by weight

  The ink A for heat insulation layer formation is filled in the 1t ink tank of FIG. 1, the crosslinker ink C is filled in the 2t ink tank, the ink B for cushion layer formation is filled in the 3t ink tank, and the crosslinker ink C Was filled in a 4 t ink tank, and the receiving layer forming ink D was filled in a 5 t ink tank. (4t, 5t ink tanks and other equipment are omitted and not shown.)

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. The ink liquid layers were pushed out from the slits 1 to 5 of the coating die unit 11 by operating the pumps in the order of the ink supply pump 1p to the ink supply pump 5p. When the environmental temperature and environmental humidity change, the ink liquid layer may not be formed even if the ink composition is the same. At that time, it can be adjusted by appropriately diluting the ink or heating the ink.

  An ink liquid layer formed from the crosslinker ink C is developed on the ink liquid layer formed from the heat insulation layer forming ink A, and an ink liquid layer formed from the cushion layer forming ink B is developed thereon. The ink liquid layer formed from the crosslinking agent ink C was developed thereon, and the ink liquid layer formed from the receiving layer forming ink D was further developed thereon, and the respective ink liquid layers were sequentially stacked. When the ink liquid layer formed from the heat insulation layer forming ink A and the ink liquid layer formed from the crosslinking agent ink C are in contact with each other, a crosslinking reaction between the organic titanium compound and polyvinyl alcohol (PVA) occurs.

  The cross-linking reaction between the organic titanium compound and PVA occurs even on the surface where the cushion layer forming ink liquid layer is in contact with the cross-linking agent ink liquid layer. The cross-linking reaction seems to proceed in the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer until there is no unreacted organotitanium compound. The flow of the ink liquid layer for forming the heat insulation layer, the ink liquid layer for forming the cushion layer, and the ink liquid layer for forming the receiving layer is prevented.

  The stacked ink liquid layers flowing down from the slope of the coating die unit 11 are applied onto the primer-adhesive surface of the substrate 5 (resin-coated paper total thickness 150 μm) conveyed by the coating roll 4 and then dried.

  Further, in the dried sublimation transfer image-receiving sheet, PVA is cross-linked at the boundary between the heat insulating layer and the cushion layer, so that the adhesion between the layers is good. In addition, since the insoluble reactant or the hardly soluble reactant is generated when the two ink liquid layers are in contact with each other, the boundary between the heat insulating layer and the cushion layer is clear. In addition, since the PVA of the cushion layer crosslinks at the boundary between the receiving layer and the cushion layer, the boundary between both layers is clear.

  The sublimation transfer image-receiving sheet obtained in Example 1 is composed of RC paper / PVA-insulated heat insulation layer-PVA-crosslinked heat insulation layer / PVA-crosslinked cushion layer-PVA-uncrosslinked cushion layer-PVA The layer structure is a crosslinked cushion layer / receiving layer.

  The film thickness of each layer is controlled by the amount of ink liquid supplied from the slit and the transport speed of the substrate. The sublimation transfer image receiving sheet of Example 1 was measured. The thickness of the heat insulating layer was 4.5 μm, the thickness of the cushion layer was 3.0 μm, and the thickness of the receiving layer was 2.5 μm.

(Example 2)
In Example 2, a sublimation transfer image receiving sheet was prepared by the following procedure using the same ink as in Example 1 except for the following heat insulation layer forming ink E.

The ink E for heat insulation layer formation was obtained from the following composition.
Styrene-butadiene latex “Nipol LX407G”: 120 parts by weight (manufactured by Nippon Zeon Co., Ltd., solid content 50%)
Cross-linked styrene-acrylic particles “High hollowness type SX8782 (A)”: 145 parts by weight (manufactured by JSR Corporation, hollowness 55%, solid content 24%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 75 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Ion exchange water: 450 parts by weight

  1t of ink tank of FIG. 1 is filled with thermal insulation layer forming ink E, crosslinker ink C is filled into 2t ink tank, cushion layer forming ink B is filled into 3t ink tank, and crosslinker ink C is filled. Was filled in a 4 t ink tank, and the receiving layer forming ink D was filled in a 5 t ink tank. (The ink tank of 4t to 5t, other equipment, etc. are omitted and not shown.)

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. The ink supply pump 1p, the ink supply pump 2p, the ink supply pump 3p, the ink supply pump 4p, and the ink supply pump 5p are operated in this order to extrude each ink from each slit of the coating die unit to form each ink liquid layer. did.

  An ink liquid layer formed from the crosslinker ink C on the ink liquid layer formed from the heat insulation layer forming ink E, an ink liquid layer formed from the cushion layer forming ink B thereon, and a crosslinker thereon The ink liquid layer formed from the ink C, the ink liquid layer formed from the receiving layer forming ink D, and the ink liquid layer were sequentially stacked.

  It applied and dried like Example 1. Crosslinking reaction proceeds on the contact surface of the cushion layer forming ink liquid layer and the crosslinker ink liquid layer, and the insoluble reaction product is a contact area between the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer; The ink liquid layer formed and contacted between the ink liquid layer for forming the cushion layer and the ink liquid layer for forming the receiving layer did not flow and the coated surface was roughened during drying.

  The sublimation transfer image-receiving sheet obtained in Example 2 has the following structure: RC paper / heat insulation layer / cushion layer crosslinked with PVA-cushion layer not crosslinked with PVA-cushion layer / receiving layer crosslinked with PVA. Was good.

  The sublimation transfer image-receiving sheet of Example 2 was measured. The thickness of the heat insulating layer was 4.0 μm, the thickness of the cushion layer was 3.0 μm, and the thickness of the receiving layer was 2.5 μm.

(Example 3)
An ink F for forming a heat insulating layer was obtained from the following composition.
Polyester resin “Polyester (registered trademark) TP220”: 50 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Polyvinyl butyral resin “ESREC (registered trademark) BH-3”: 10 parts by weight (manufactured by Sekisui Chemical Co., Ltd.)
Cross-linked styrene-acrylic particles “High hollowness type SX8782 (A)”: 145 parts by weight (manufactured by JSR Corporation, hollowness 55%, solid content 24%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 75 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Toluene / ethyl acetate (weight ratio 1: 1): 470 parts by weight

Cushion layer forming ink G was obtained from the following composition.
Polyester resin “Polyester (registered trademark) TP220”: 50 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Polyvinyl butyral resin “ESREC (registered trademark) BH-3”: 10 parts by weight (manufactured by Sekisui Chemical Co., Ltd.)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 200 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Toluene / ethyl acetate (weight ratio 1: 1): 400 parts by weight

Crosslinker ink H was obtained from the following composition.
Hexamethylene diisocyanate: 5 parts by weight (manufactured by Nippon Polyurethane Industry Co., Ltd.)
Methyl isobutyl ketone / toluene (weight ratio 1: 1): 100 parts by weight

For the receiving layer, receiving layer forming ink D was used.
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 100 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Epoxy-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-393): 5 parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-343): 5 parts by weight of methyl ethyl ketone / toluene (weight ratio of 1: 1) : 620 parts by weight

    1t of ink tank of FIG. 1 is filled with thermal insulation layer forming ink F, cross-linking agent ink H is filled into 2t ink tank, cushion layer forming ink G is filled into 3t ink tank, and cross-linking agent ink H is filled. Was filled in a 4 t ink tank, and the receiving layer forming ink D was filled in a 5 t ink tank. (The 4t and 5t ink tanks and other equipment are not shown.)

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. The ink supply pump 1p, the ink supply pump 2p, the ink supply pump 3p, the ink supply pump 4p, and the ink supply pump 5p were operated in this order to extrude each ink from the slits 1 to 5, thereby forming each ink liquid layer.

  An ink liquid layer formed from the crosslinker ink H, an ink liquid layer formed from the cushion layer forming ink G, and a crosslinker ink H were formed on the ink liquid layer formed from the heat insulating layer forming ink F. The ink liquid layer and the ink liquid layer formed from the receiving layer forming ink D and the ink liquid layer were sequentially stacked.

  Polyvinyl butyral resin (ESREC BH-3) is insoluble in methyl isobutyl ketone and toluene, which are the solvents for the crosslinker ink H, so that the ink liquid layer for the crosslinker ink H and the ink liquid layer for the ink F for forming the heat insulation layer are used. In the contact area, eslek BH-3 is deposited. ESREC BH-3 also deposits in the region where the ink liquid layer of the cushion layer forming ink G and the crosslinker ink liquid layer are in contact with each other.

  In order for the deposited resin to prevent further mixing of the ink liquid layer, the heat insulating layer forming ink liquid layer, the cushion layer forming ink liquid layer, and the receiving layer forming ink liquid layer are examples in which the laminated structure is maintained. It was applied and dried as in 1. The stacked ink liquid layers did not flow during drying and the coated surface was not roughened. The applied winding was stored in a constant temperature layer at 45 ° C. for 5 days, and butyral resin and diisocyanate were reacted and crosslinked.

  The sublimation transfer image-receiving sheet obtained in Example 3 is RC paper / heat insulation layer in which polyvinyl butyral resin is not crosslinked—heat insulation layer in which polyvinyl butyral resin is crosslinked / cushion layer in which polyvinyl butyral resin is crosslinked—polyvinyl butyral resin is crosslinked. The cushion layer / polyvinyl butyral resin that was not formed was a crosslinked cushion layer / receiving layer, and the coated surface was good.

  The film thickness of each layer is controlled by the amount of ink liquid supplied from the slit and the conveyance speed of the substrate. The sublimation transfer image-receiving sheet of Example 3 is measured. The thickness of the heat insulating layer is 4.5 μm and the thickness of the cushion layer. Was 3.0 μm, and the thickness of the receiving layer was 2.5 μm.

Example 4
For the heat insulating layer, ink F for forming a heat insulating layer was used.
Polyester resin “Polyester (registered trademark) TP220”: 50 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Polyvinyl butyral resin “ESREC (registered trademark) BH-3”: 10 parts by weight (manufactured by Sekisui Chemical Co., Ltd.)
Cross-linked styrene-acrylic particles “High hollowness type SX8782 (A)”: 145 parts by weight (manufactured by JSR Corporation, hollowness 55%, solid content 24%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 75 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Toluene / ethyl acetate (weight ratio 1: 1): 470 parts by weight

Cushion layer forming ink I was obtained from the following composition.
Polyester resin “Polyester (registered trademark) TP220”: 60 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 200 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Toluene / ethyl acetate (weight ratio 1: 1): 400 parts by weight

The crosslinking agent ink C was used as the crosslinking agent.
Organic Titanium Compound “Orgatyx (registered trademark) ТC-400”: 30 parts by weight (manufactured by Matsumoto Fine Chemical Co., Ltd., solid content 80%)
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 2 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Isopropyl alcohol / methyl ethyl ketone (weight ratio 1: 1): 100 parts by weight

A receiving layer forming ink J was obtained from the following composition.
Polyester resin “Polyester (registered trademark) TP220”: 80 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Polyvinyl butyral resin “ESREC (registered trademark) BH-3”: 20 parts by weight (manufactured by Sekisui Chemical Co., Ltd.)
Epoxy-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-393): 5 parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-343): 5 parts by weight of methyl ethyl ketone / toluene (weight ratio of 1: 1) : 620 parts by weight

  1t ink tank of FIG. 1 is filled with the thermal insulation layer forming ink F, the crosslinking agent ink C is filled into the 2t ink tank, the cushion layer forming ink I is filled into the 3t ink tank, and the crosslinking agent ink C is filled. Was filled in a 4 t ink tank, and the receiving layer forming ink J was filled in a 5 t ink tank. (The 4t and 5t ink tanks and other equipment are not shown.)

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. The ink supply pump 1p, the ink supply pump 2p, the ink supply pump 3p, the ink supply pump 4p, and the ink supply pump 5p were operated in this order to extrude each ink from the slits 1 to 5, thereby forming each ink liquid layer.

  An ink liquid layer formed from the crosslinker ink C, an ink liquid layer formed from the cushion layer forming ink I, and a crosslinker ink C were formed on the ink liquid layer formed from the heat insulating layer forming ink F. The ink liquid layer formed from the ink liquid layer and the receiving layer forming ink J and the ink liquid layer were sequentially stacked.

  It applied and dried like Example 1. The cross-linking reaction between the polyvinyl butyral resin and the organic titanium compound proceeded on the surface where the ink liquid layer for forming the heat insulating layer and the cross-linking agent ink liquid layer were in contact with each other, and an insoluble or hardly soluble reactant was formed. The cross-linking reaction between the polyvinyl butyral resin and the organotitanium compound proceeded even on the surface where the ink layer for forming the receiving layer and the cross-linking agent ink liquid layer were in contact, and an insoluble or hardly soluble reactant was formed. The stacked ink liquid layers did not flow during drying and the coated surface was not roughened.

  Sublimation transfer image-receiving sheet obtained in Example 4 is RC paper / heat insulation layer in which polyvinyl butyral resin is not crosslinked-heat insulation layer in which polyvinyl butyral resin is crosslinked / cushion layer / receiving layer in which polyvinyl butyral resin is crosslinked-polyvinyl butyral The composition of the receiving layer was that the resin was not crosslinked, and the coated surface was good.

  The film thickness of each layer is controlled by the amount of ink liquid supplied from the slit and the transport speed of the substrate. The sublimation transfer image-receiving sheet of Example 4 was measured. The thickness of the heat insulating layer was 4.5 μm, the thickness of the cushion layer was 3.0 μm, and the thickness of the receiving layer was 3.0 μm. Since a part of the receiving layer was cross-linked, the coating surface was not disturbed even when the thickness of the receiving layer was increased.

(Example 5)
For the heat insulating layer, ink F for forming a heat insulating layer was used.
As the receiving layer, receiving layer forming ink J was used.

Cushion layer forming ink K was obtained from the following composition.
Polyester resin “Polyester (registered trademark) TP220”: 30 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 200 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Organic Titanium Compound “Orgatyx (registered trademark) ТC-400”: 30 parts by weight (manufactured by Matsumoto Fine Chemical Co., Ltd., solid content 80%)
Toluene / ethyl acetate (weight ratio 1: 1): 160 parts by weight

  The heat insulating layer forming ink F was filled in the 1t ink tank of FIG. 1, the cushion layer forming ink K was filled in the 2t ink tank, and the receiving layer forming ink J was filled in the 3t ink tank.

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. The ink supply pump 1p, the ink supply pump 2p, and the ink supply pump 3p were operated in this order to push out each ink from the slits 1 to 3, thereby forming each ink liquid layer.

  An ink liquid layer formed from the ink K for forming the cushion layer on the ink liquid layer formed from the ink F for forming the heat insulating layer, and an ink liquid layer formed from the ink J for forming the receiving layer thereon, and the ink liquid in sequence. Stacked layers.

  It applied and dried like Example 1. In the region where the heat insulation layer forming ink liquid layer and the cushion layer forming ink liquid layer are in contact, the polyvinyl butyral in the heat insulation layer forming ink reacts with the organic titanium compound in the cushion layer forming ink, resulting in an insoluble reaction product. I can do things. Similarly, an insoluble reaction product is formed in a region where the cushion layer forming ink liquid layer and the receiving layer forming ink liquid layer are in contact with each other. The stacked ink liquid layers did not flow during drying, and the dried coated surface was good.

  Sublimation transfer image-receiving sheet obtained in Example 5 is: RC paper / heat insulation layer in which polyvinyl butyral resin is not crosslinked-heat insulation layer in which polyvinyl butyral resin is crosslinked / cushion layer / receiving layer in which polyvinyl butyral resin is crosslinked-polyvinyl butyral The receiving layer has a structure in which the resin is not crosslinked.

In Example 5, the cross-linking agent is contained in the cushion layer forming ink, and the crosslinkable resin in the heat insulating layer forming ink and the receiving layer forming ink is cross-linked when the ink liquid layers are stacked. This is a method for producing a transfer image-receiving sheet.
Since a part of the ink layer for forming the receiving layer is crosslinked, the coated surface was not disturbed even if the receiving layer was thickened.

  The film thickness of each layer is controlled by the amount of ink liquid supplied from the die slit and the conveyance speed of the substrate. The sublimation transfer image-receiving sheet of Example 5 is measured, and the thickness of the heat insulating layer is 4.5 μm. The thickness was 3.0 μm, and the thickness of the receiving layer was 3.0 μm.

(Example 6)
The heat insulation layer used the heat insulation layer forming ink A.
Acrylic / urethane emulsion “Part No. WEM-200U”: 120 parts by weight (40% solids manufactured by Taisei Fine Chemical Co., Ltd.)
Polyvinyl alcohol “GOHSENOL (registered trademark) GM-14”: 10 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Cross-linked styrene-acrylic particles “High hollowness type SX8782 (A)”: 145 parts by weight (manufactured by JSR Corporation, hollowness 55%, solid content 24%)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 75 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Ion exchange water: 370 parts by weight

The cushion layer used the cushion layer forming ink G.
Polyester resin “Polyester (registered trademark) TP220”: 50 parts by weight (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.)
Polyvinyl butyral resin “ESREC (registered trademark) BH-3”: 10 parts by weight (manufactured by Sekisui Chemical Co., Ltd.)
Cross-linked styrene-acrylic particles “Highly cross-linked SX866 (B)”: 200 parts by weight (manufactured by JSR Corporation, particle size 0.3 μ, hollow rate 30%, solid content 20%)
Toluene / ethyl acetate (weight ratio 1: 1): 400 parts by weight

The crosslinking agent ink C was used as the crosslinking agent.
Organic Titanium Compound “Orgatyx (registered trademark) ТC-400”: 30 parts by weight (manufactured by Matsumoto Fine Chemical Co., Ltd., solid content 80%)
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 2 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Isopropyl alcohol / methyl ethyl ketone (weight ratio 1: 1): 100 parts by weight

For the receiving layer, receiving layer forming ink D was used.
Vinyl chloride-vinyl acetate copolymer “Solvine (registered trademark) CL”: 100 parts by weight (manufactured by Nissin Chemical Co., Ltd.)
Epoxy-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-393): 5 parts by weight Amino-modified silicone (manufactured by Shin-Etsu Chemical Co., Ltd., KF-343): 5 parts by weight of methyl ethyl ketone / toluene (weight ratio of 1: 1) : 620 parts by weight

  1t of ink tank of FIG. 1 is filled with thermal insulation layer forming ink A, crosslinker ink C is filled into 2t ink tank, and thermal insulation layer forming ink E is filled into 3t ink tank. Is filled into a 4t ink tank, the cushion layer forming ink G is filled into a 5t ink tank, the crosslinker ink C is filled into a 6t ink tank, and the receiving layer forming ink D is filled into a 7t ink tank. did. (The ink tank of 4t to 7t, other equipment, etc. are omitted and not shown)

  After applying a primer treatment to one side of the resin-coated paper (RC paper) with a total thickness of 150 μm that is extruded with resin melted on both sides of the paper, as shown in 5 in FIG. From the ink supply pump 1p, the pumps were operated in the order of the ink supply pump 7p, and the ink liquid layers were pushed out from the slits 1 to 7 of the coating die unit 11, respectively.

  An ink liquid layer formed from the crosslinker ink C is developed on the ink liquid layer formed from the heat insulating layer forming ink A, and an ink liquid layer formed from the heat insulating layer forming ink A, and a crosslinker thereon. An ink liquid layer formed from the ink C is developed, an ink liquid layer formed from the cushion layer forming ink G is developed thereon, an ink liquid layer formed from the crosslinker ink C is developed, and further The ink liquid layer formed from the receiving layer forming ink D was developed on top, and the ink liquid layers were sequentially stacked.

  When the ink liquid layer formed from the heat insulation layer forming ink A and the ink liquid layer formed from the cross-linking agent ink C come into contact with each other, a crosslinking reaction between the organic titanium compound and PVA occurs.

  Even on the surface where the cushion layer forming ink liquid layer is in contact with the crosslinker ink liquid layer, a crosslinking reaction between the organic titanium compound and polyvinyl butyral occurs. The cross-linking reaction seems to proceed in the heat insulating layer forming ink liquid layer and the cushion layer forming ink liquid layer until there is no unreacted organotitanium compound. Moreover, the flow at the time of drying of the ink liquid layer for heat insulation layer formation and the ink liquid layer for cushion layer formation is prevented. Moreover, the range which the heat insulation layer bridge | crosslinks can be increased / decreased by increasing / decreasing the extrusion amount of crosslinking agent ink.

  The stacked ink liquid layers flowing down from the slope of the coating die unit 11 are applied onto the primer-adhesive surface of the substrate 5 (resin-coated paper total thickness 150 μm) conveyed by the coating roll 4 and then dried.

  The sublimation transfer image-receiving sheet obtained in Example 6 is composed of a heat insulating layer in which RC paper / PVA is not cross-linked-a heat insulating layer in which PVA is cross-linked-a heat insulating layer in which PVA is not cross-linked-a heat insulating layer in which PVA is cross-linked / polyvinyl butyral Is a cushion layer / receptive layer in which polyvinyl butyral is crosslinked.

  The film thickness of each layer is controlled by the amount of ink liquid supplied from the die slit and the conveyance speed of the substrate. The sublimation transfer image-receiving sheet of Example 6 is measured, and the thickness of the heat insulating layer is 6.0 μm. The thickness was 3.0 μm, and the thickness of the receiving layer was 2.5 μm. Since the heat insulation layer was supplied at two locations and the spaces were cross-linked, the laminated ink liquid layer was not disturbed during drying even if the heat insulation layer was thickened.

(Comparative Example 1)
A sublimation transfer image receiving sheet was obtained in the same manner as in Example 1 except that the receiving layer forming ink H was used instead of the receiving layer forming ink D.
A receiving layer forming ink H was obtained with the following composition.
Vinyl chloride emulsion “Viniblanc (registered trademark) 711”: 150 parts by weight (manufactured by Nissin Chemical Industry Co., Ltd., solid content 30%)
Release agent “Epoxy-modified silicone: X-22-3000Т”: 2.0 parts by weight (manufactured by Shin-Etsu Chemical Co., Ltd.)
Surfactant “polyether-modified silicone KF-6011”: 0.05 parts by weight (manufactured by Shin-Etsu Chemical Co., Ltd.)
Ion exchange water: 150 parts by weight

(Comparative Example 2)
Using the heat insulating layer forming ink A, the cushion layer forming ink B, and the receiving layer forming ink D of Example 1, the ink was sequentially coated with a wire bar on RC paper and dried for comparison. A sublimation transfer image receiving sheet was prepared. No crosslinker ink was used. The heat insulating layer was 4.5 μm thick, the cushion layer was 3.0 μm thick, and the receptor layer was 2.5 μm thick.

(Appearance of sublimation transfer image receiving sheet)
Although the surface of the sublimation transfer image receiving sheets of Examples 1 to 6 and Comparative Example 1 is smooth and has a good surface, the sublimation transfer image receiving sheet of Comparative Example 2 has wire bar eyes remaining, In parallel, muscle irregularities were seen.

(Printing test)
An image was printed on the sublimation transfer image receiving sheets produced in Examples and Comparative Examples using a printer tester for a kiosk terminal.
The sublimation transfer image-receiving sheets of Examples 1, 2, 3, and 6 use the same receiving layer forming ink. The sublimation transfer image receiving sheets of Example 1 and Example 2 had the same maximum density and gradation reproducibility. There was no omission in the image, and the dent in the high density area was slight. Omission means that a minute portion that is not dyed is observed where it must be uniformly dyed in the form of a thermal head.

  The gradation reproducibility of the sublimation transfer image receiving sheet of Example 3 was almost the same as that of Example 1 but the maximum density was slightly lower.

  The maximum density of the sublimation transfer image-receiving sheet of Example 6 was slightly higher than that of Example 1. In the gradation reproducibility, the rise of γ was earlier than that of the sublimation transfer image receiving sheet of Example 3.

  The sublimation transfer image receiving sheet of Example 4 has a slightly higher maximum density than the sublimation transfer image receiving sheet of Example 1, has a sharp gradation reproducibility, and quickly rises to a high density portion. Overall, there was no problem. The receptor layer was thicker than other sublimation transfer image-receiving sheets, but dents in the high density area were hardly observed.

  The sublimation transfer image receiving sheet of Example 5 had almost the same maximum density and gradation reproducibility as the sublimation transfer image receiving sheet of Example 4. No dent in the high concentration part was observed.

  The sublimation transfer image receiving sheet of Comparative Example 2 has almost the same maximum density and gradation characteristics as the sublimation transfer image receiving sheet of Example 1, but dents on the surface of the printed portion at the high density portion are observed. It was. In addition, a slight omission was observed at the low concentration part.

  The sublimation transfer image receiving sheet of Comparative Example 1 has a maximum density that is not significantly different from other sublimation transfer image receiving sheets, but the γ curve is different from other sublimation transfer image receiving sheets in the rising and maximum density portions.

  The sublimation transfer image-receiving sheet having the constitution of the present invention can be produced by simultaneously applying a multi-layer of oil-based ink and water-based ink. Further, a sublimation transfer image-receiving sheet can be produced by applying a plurality of oil-based inks at the same time in multiple layers. Further, there is a crosslinked layer in the laminated structure of the sublimation transfer image receiving sheet, and a sublimation transfer image receiving sheet having good image characteristics can be obtained. The processes that have been applied sequentially can be applied all at once, and the manufacturing process of the sublimation transfer image receiving sheet can be shortened.

1t: ink tank 2t: ink tank 3t: ink tank 1p: ink supply pump 2p: ink supply pump 3p: ink supply pump 1: slit 2: slit 3: slit 1s: ink liquid layer 2s: ink liquid layer 3s: ink liquid Layer 4: Coating roll 5: Substrate 6: Drying zone 11: Die coating unit 21: Heat insulation layer 22: Cushion layer 23: Receptive layer 30: Sublimation transfer image receiving sheet 31: Sublimation transfer image receiving sheet 32: Sublimation transfer image receiving sheet 33: Sublimation Transfer image receiving sheet 40: area where resin is cross-linked

Claims (4)

In the sublimation transfer image receiving sheet, a heat insulating layer containing hollow particles is formed on a substrate, a cushion layer is formed on the heat insulating layer, and an oily receiving layer is formed on the cushion layer.
Between the heat insulating layer and the cushion layer, a layer crosslinked with a crosslinking agent is formed,
The sublimation transfer image receiving sheet, wherein the crosslinked layer is at least one of a crosslinked heat insulating layer and a crosslinked cushion layer. In the sublimation transfer image receiving sheet, a heat insulating layer containing hollow particles is formed on a substrate, a cushion layer is formed on the heat insulating layer, and an oily receiving layer is formed on the cushion layer.
Sublimation wherein said thermal insulating layer from the substrate side, a heat insulating layer that is not at least crosslinked, heat-insulating layer being crosslinked to claim 1, characterized in that the order in the heat insulating layer of the insulating layer which is not crosslinked is formed Transfer image receiving sheet. Prepare the heat insulating layer forming ink, the cross-linking agent ink, the cushion layer forming ink and the oil-based receiving layer forming ink,
At least one of the heat insulating layer forming ink and the cushion layer forming ink contains a resin that can be cross-linked by a cross-linking agent of the cross-linking agent ink,
From each of these inks, an ink liquid layer for forming a heat insulating layer, a crosslinker ink liquid layer, an ink liquid layer for forming a cushion layer and an ink liquid layer for forming a receiving layer are formed,
At least, each ink liquid layer is stacked so that a laminated structure is formed in the order of the heat insulating layer forming ink liquid layer, the crosslinking agent ink liquid layer, the cushion layer forming ink liquid layer, and the receiving layer forming ink liquid layer,
A method for producing a sublimation transfer image-receiving sheet, comprising applying an ink liquid layer having a laminated structure to a substrate and drying. Prepare heat-insulating layer forming ink, cushion layer forming ink, cross-linking agent ink and oil-based receiving layer forming ink,
At least one of the cushion layer forming ink and the receiving layer forming ink contains a resin that can be cross-linked by a cross-linking agent of the cross-linking agent ink.
From each of these inks, an ink liquid layer for forming a heat insulating layer, an ink liquid layer for forming a cushion layer, a crosslinker ink liquid layer and an ink liquid layer for forming a receiving layer are formed,
At least, each ink liquid layer is stacked so that a laminated structure is formed in the order of an ink liquid layer for forming a heat insulating layer, an ink liquid layer for forming a cushion layer, a crosslinker ink liquid layer, and an ink liquid layer for receiving layer formation,
A method for producing a sublimation transfer image-receiving sheet, comprising applying an ink liquid layer having a laminated structure to a substrate and drying.

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