JP2002011937A - Ink jet image receiving sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet image receiving sheet, which has an excellent shape adaptability under the condition being brought into contact with a surface having a curved surface and unevenness and has an ink accepting layer excellent in weatherability. SOLUTION: In this ink jet image receiving sheet, which is formed by providing an ink accepting layer on a support, the support consists of at least a two or more layered laminated structure made of a nonoriented thermoplastic resin film. Preferably, the thermoplastic resin is polyethylene. Preferably, the ink accepting layer includes a porous pigment and, at least polymer adhesive. The preferable polymer adhesive is an organic solvent-soluble type. In addition, the side of the ink jet image receiving sheet opposite to its ink accepting layer has a self-adhesive layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink-jet image receiving sheet, and more particularly, it has excellent shape adaptability even when an ink-jet-recorded image receiving sheet is adhered to a curved surface or a surface having irregularities. And an ink jet image receiving sheet having excellent water resistance.

[0002]

2. Description of the Related Art Ink-jet recording is a method of recording images and characters by flying fine droplets of ink on various image forming principles and attaching them to an image receiving sheet such as paper. It has features such as easy multi-coloring, great flexibility in recording patterns, and no need for development-fixing. It has rapidly spread in various uses as a recording device for various figures and color images including Chinese characters. I have. Further, an image formed by the multi-color ink jet system can obtain a record comparable to multi-color printing by a plate making system or printing by a color photographic system. In addition, in applications requiring a small number of copies, it is being widely applied to the field of full-color image recording because it is less expensive than the photographic technique.

In general, such an ink jet recording system has advantages that an image can be obtained by a relatively simple apparatus, maintenance is easy, and no noise is generated. It is widely used in a wide range of fields such as computer terminals, label printing machines, vending machines such as ticketing machines, and the like.

[0004] Further, with the diversification of uses, it is used for posters and POP arts, or provided with an adhesive layer on the back surface, and used for price display labels, product display (barcode) labels, quality display labels, For label applications such as weighing display labels and advertising labels (stickers), it adheres well to a wide range of adherends, and because it is easy to apply, heat-sensitive properties, magnetic properties, Since it becomes possible to add a composite function by laminating a sheet or the like having suitability for offset printing, the application to tickets, commuter passes, various cards, and the like is expanding. However, the conventional inkjet image receiving sheet for such a purpose has a problem that if the adherend has a curved surface, good adhesion cannot be obtained.

[0005] Further, the ink-absorbing and fixing properties of the ink-jet ink are also important for the ink-jet image-receiving sheet. That is, from the features such as high printing speed, low noise, easy multi-color, development-fixing is unnecessary, in the ink jet recording apparatus that has spread, ink jet ink that is difficult to dry is used to avoid nozzle clogging, The components of the ink are binders, dyes, solvents, and the like dissolved in water,
That is, a water-based ink is generally used. Therefore, as the image receiving sheet, in addition to the high density of the print dots, the color tone is bright and vivid, in addition to the fact that the ink absorption is fast and the ink does not flow or bleed even when the print dots overlap, The diffusion of the dots in the horizontal direction is not unnecessarily large, and the periphery is required to be smooth and unsharp. However, the conventional inkjet image receiving sheet corresponding to such a purpose has a problem that the water resistance of the coating layer is inferior and cannot be used outdoors.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide an ink receiving layer having excellent shape adaptability even when adhered to an adherend surface having a curved surface or unevenness and having excellent water resistance. An object of the present invention is to provide an inkjet image receiving sheet.

[0007]

That is, the present invention relates to an ink jet image receiving sheet having an ink receiving layer provided on a support, wherein the support comprises a laminate structure of at least two layers of a non-stretched thermoplastic resin film. The present invention provides an ink jet image receiving sheet.

The thermoplastic resin is preferably a polyethylene, and more preferably a three-layer structure of a high-density polyethylene as the first layer, a low-density polyethylene as the second layer, and a high-density polyethylene as the third layer. .

In a preferred embodiment, at least one layer of the thermoplastic resin film contains an inorganic filler.

Preferably, the ink receiving layer contains a porous pigment and at least a polymer adhesive, and more preferably the polymer adhesive is of an organic solvent-soluble type.

Another object of the present invention is to provide an ink jet image receiving sheet having a pressure-sensitive adhesive layer on the surface of the above ink jet image receiving sheet opposite to the ink receiving layer. It is a preferred embodiment that the pressure-sensitive adhesive layer contains a coloring dye or an inorganic filler.
It is a particularly preferred embodiment that the coloring dye is black and the inorganic filler is titanium oxide.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The support used in the ink jet image receiving sheet of the present invention is a laminated structure of at least two layers of a thermoplastic resin film formed by a non-stretching film forming method. As the thermoplastic resin of the thermoplastic resin film, polyolefin, polystyrene, polyvinyl acetate, polyacrylate, polymethacrylate, polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyester,
Various resins such as polyamide are exemplified. Examples of the polyolefin resin include homopolymers of olefins such as low-density polyethylene (LDPE), linear low-density polyethylene (L-LDPE), high-density polyethylene (HDPE), polypropylene (PP), polybutene, and polypentene, or ethylene-propylene copolymer. Olefin 2 such as coalescence
And a mixture thereof.
Examples of the polyester resin include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. Among them, polyolefin resins such as polyethylene and polypropylene are preferable in terms of solvent resistance, and polyethylene resins are more preferable in terms of shape adaptability and support adaptability.

As a method for forming a film having a laminated structure of two or more layers from these thermoplastic resins, a method for producing a laminated film can be usually used. That is, a method of extruding and laminating a hot-melted resin onto a single-layer film, a method of bonding two single-layer films via a molten resin layer, and a method of directly forming a two-layer or three-layer laminated film by a co-extrusion apparatus. There are a method of making, a method of bonding single-layer films together with an adhesive, and the like. In the present invention, preferred is a laminated film without an adhesive or the like, that is, a laminated film in which a molten resin is directly formed into a laminated film, the surface is coated with the molten resin, or bonded with the molten resin.

The technique for producing a two-layer or three-layer laminated film is a technique widely used in many fields.
This is because when various functions cannot be solved by a single plastic film, a method of solving the problems by multilayering is employed. That is, gas barrier properties, heat sealing properties,
A combination of convenient properties such as transparency, impact resistance and heat resistance can be selected. The support of the image receiving sheet in the invention needs to have shape adaptability, moderate opacity, and blocking resistance. It is necessary that the support of the inkjet image receiving sheet has characteristics suitable for coating the ink receiving layer thereon, and has excellent shape adaptability even when attached to an adherend having a curved surface. . With a single layer, a sheet that sufficiently satisfies these characteristics could not be obtained. In particular, a sheet capable of coating the ink receiving layer having excellent shape adaptability of the present invention was obtained by having a laminated structure of two or more layers.

One embodiment of the two-layer or three-layer laminated film is a film-processed synthetic paper. However, the film synthetic paper was formed by extruding a molten resin in a thick film from an extrusion die, once cooling, heating again to around a softening temperature, and simultaneously or sequentially stretching in the longitudinal and transverse directions to form a film. Things. This film forming method is called a biaxially stretched film forming method. By stretching, appropriate hardness and strength are obtained. In addition, there are those in which fine voids (microvoids) are formed inside during this stretching and those in which no voids are formed. The synthetic paper disclosed in Japanese Patent Application Laid-Open No. 62-259848 is a typical example having the void.
These are widely used, for example, under the trade name “Yupo”. On the other hand, the molten resin is extruded from the die slit,
The method of cooling, solidifying and winding while taking up is called a non-stretched film forming method. The non-stretched film referred to in the present invention refers to a film produced by a non-stretched film forming method, which is a laminated film that is not stretched in the machine direction or the transverse direction. The unstretched film is flexible and easily takes a shape adapted to a curved surface or an uneven surface.

Further, in the thermoplastic resin for forming a film, titanium oxide, zinc oxide, talc, calcium carbonate,
Inorganic fillers such as calcined clay, barium sulfate, silica,
Fatty acid amides such as stearic acid amide, arachidic acid amide, zinc stearate, calcium stearate,
Fatty acid metal salts such as aluminum stearate and magnesium stearate, blue pigments and dyes such as cobalt blue, ultramarine blue, cecilian blue, phthalocyanine blue, cobalt violet, fast violet,
Magenta pigments and dyes such as manganese purple, optical brighteners,
Various additives such as an ultraviolet absorber and an antioxidant can be added in an appropriate combination. It is preferable to include an inorganic filler, particularly titanium oxide, because the opacity is dramatically improved.

In one preferred embodiment of the support in the present invention, the first layer is a high-density polyethylene (HDPE) layer, and the second layer is a low-density polyethylene (LDPE, L-LDPE) layer from the side on which the ink receiving layer is provided. It is a structure of. Further, a support having a three-layer structure in which a high-density polyethylene (HDPE) layer is further provided as a third layer is also one of the preferable embodiments.
Further, it is a preferable embodiment to include an inorganic filler such as titanium oxide and calcium carbonate in the second low-density polyethylene layer in order to obtain opacity. Also, the first layer or the third layer
The inclusion of an inorganic filler such as talc in the HDPE layer of the layer is a preferred embodiment from the viewpoint of preventing blocking and the like.

For the purpose of improving the acceptability of the ink-jet ink, an ink-receiving layer is provided on at least one surface of the laminated resin film support used in the present invention. One embodiment of providing the ink receiving layer is a method of applying a porous ink absorbing layer containing at least an inorganic pigment and an adhesive.

Examples of the inorganic pigment used in the ink-jet ink receiving layer in the present invention include light calcium carbonate, heavy calcium carbonate, magnesium carbonate, magnesium hydroxide kaolin, talc, calcium sulfate, and the like.
Barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica, alumina, colloidal alumina, pseudoboehmite, aluminum hydroxide And inorganic pigments such as lithopone, zeolite, hydrohaloysite and magnesium hydroxide, styrene-based plastic pigments, acrylic-based plastic pigments, and organic pigments such as polyethylene, microcapsules, urea resins, and melamine resins.

Among the above pigments, as the pigment contained as a main component in the ink-jet ink receiving layer, a porous inorganic pigment is preferable, and porous synthetic amorphous silica, porous calcium carbonate, porous magnesium carbonate, Alumina and the like are mentioned, and porous synthetic amorphous silica having a large pore volume is particularly preferable.

As such synthetic amorphous silica, commercially available ones can be suitably used. For example, Mizukasil P-
526, Mizukacil P-801, Mizukasil NP-8,
Mizukacil P-802, Mizukasil P-802Y, Mizukasil C-212, Mizukacil P-73, Mizukacil P
-78A, Mizukacil P-78F, Mizukacil P-8
7, Mizukacil P-705, Mizukasil P-707, Mizukasil P-707D, Mizukasil P-709, Mizukasil C-402, Mizukasil C-484 (all manufactured by Mizusawa Chemical), Toksil U, Toksil UR, Toksil G
U, Toksil AL-1, Toksil GU-N, Toksil N, Toksil NR, Toksil PR, Solex, Fine Seal E-50, Fine Seal T-3
2, Fine Seal X-37, Fine Seal X-7
0, Fine Seal RX-70 Fine Seal A, Fine Seal B (all manufactured by Tokuyama Soda), Carplex FPS-101, Carplex CS-7, Carplex 80, Carplex XR, Carplex 67
(The above are manufactured by Shionogi & Co., Ltd.), Syloid 63, Syloid 65, Syloid 66, Syloid 77, Syloid 7
4, thyroid 79, thyroid 404, thyroid 6
20, thyroid 800, thyroid 150, thyroid 244, and thyroid 266 (all manufactured by Fuji Silysia Chemical Ltd.).

The adhesive for the ink receiving layer is a water-soluble, water-dispersible or water-insoluble polymer adhesive. For example, water-soluble or water-dispersible polymer adhesives include starch derivatives such as oxidized starch, etherified starch, and phosphated starch; cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose; casein, gelatin, soy protein, Polyvinyl alcohol or derivatives thereof;
Conjugated diene-based copolymer latex such as polyvinylpyrrolidone, maleic anhydride resin, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer; acrylic-based such as acrylic acid ester and methacrylic acid ester polymer or copolymer Acrylic polymer latex such as polymer; vinyl polymer latex such as ethylene-vinyl acetate copolymer; or functional group-modified polymer latex by functional group-containing monomer such as carboxy group of these various polymers; melamine Aqueous adhesives such as thermosetting synthetic resins such as resins and urea resins; Acrylic esters such as polymethyl methacrylate; Polymer or copolymer resins of methacrylic esters; polyurethane resins, unsaturated polyester resins, vinyl chloride-vinyl acetate Copolymer, polyvinyl butyral, alkyd Synthetic resin adhesives and the like, and the like.

Further, as the water-insoluble polymer adhesive,
Examples thereof include acetal resins such as vinylpyrrolidone / vinyl acetate copolymer, polyvinyl butyral, and polyvinyl formal. Particularly, an acetal resin having an acetalization degree in a range of 5 mol% to 20 mol% contains a small amount of water. This is preferable since the dispersion of the inorganic pigment can be facilitated. In addition, the water-insoluble polymer adhesive is more preferable than the water-soluble polymer adhesive in that the water resistance of the coating layer is improved and the use of the adhesive is resistant to wind and rain, so that it can be used in outdoor applications. .

These polymer adhesives may be used alone or in combination of two or more, and are used in an amount of 3 to 70 parts by weight, preferably 5 to 50 parts by weight, and less than 3 parts by weight based on 100 parts of the inorganic pigment. The coating layer strength of the ink-jet ink receiving layer is insufficient, and if it exceeds 70 parts by weight, the ink-jet ink absorbability decreases.

Further, in the ink-jet ink receiving layer,
As additives, dye fixing agents, pigment dispersants, thickeners, flow improvers, defoamers, foam inhibitors, release agents, foaming agents, penetrants,
A coloring dye, a coloring pigment, a fluorescent whitening agent, an ultraviolet absorber, an antioxidant, a preservative, an antibacterial agent, a waterproofing agent, a wet paper strength enhancer, a dry paper strength enhancer, and the like can also be appropriately compounded.

In particular, secondary amines, tertiary amines, and tertiary amines which form insoluble salts with sulfonic acid groups, carboxyl groups, amino groups, and the like in water-soluble direct dyes and water-soluble acid dyes, which are dye components of aqueous inkjet inks. When a cationic dye fixing agent consisting of a quaternary ammonium salt is blended, the dye is captured in the ink receiving layer, so that the color is improved and the formation of an insoluble salt causes the ink to flow out or bleed out due to water dripping or moisture absorption. Is preferred because

In the present invention, if the coating amount of the ink-jet ink receiving layer is too small, not only does the ink-jet ink absorbability become problematic, but also the image density, color, and sharpness are low, and the ink-jet ink cannot be used. A dot shape called feathering, which is diffused in the plane direction of the layer and jagged like a bird's feather, occurs. In addition, when the coating amount is too large, the drying load in the drying step after coating increases, and not only does the productivity decrease with a decrease in the coating speed, but also the drying under high load constitutes the inkjet ink receiving layer. The adhesive in the coating composition moves to the surface of the ink-jet ink receiving layer together with the solvent that evaporates to reduce the amount of voids on the surface. Therefore, it is not preferable. From such a viewpoint, the coating amount of the inkjet ink receiving layer is preferably from 1 to 30 g / m ² .
In addition, it is also possible to apply the ink jet ink receiving layer by applying a certain amount of coating in several steps, and when applying gloss, the gloss is improved as compared with applying the coating amount at once. I do.

As a method for applying the ink-jet ink receiving layer, various coating apparatuses such as a blade coater, a roll coater, an air knife coater, a bar coater, a rod blade coater, a curtain coater, and a short dwell coater can be used. Also, after coating, machine calendar, TG calendar, super calendar,
Flattening can also be performed using a calender such as a soft calender.

When an ink jet ink receiving layer is applied, the ink receiving layer may be provided on the support as it is,
A known surface treatment such as a corona treatment, a flame treatment, a plasma treatment, or an ultraviolet irradiation treatment may be applied to the support in advance. In order to improve the adhesiveness, an anchor coat layer may be provided between the film support and the ink receiving layer, which is a preferable embodiment.

In the embodiment having a pressure-sensitive adhesive layer, a known pressure-sensitive adhesive such as acrylic, rubber, vinyl ether, or silicone is coated on a support opposite to the ink receiving layer, usually with a dry film thickness of 10 to 10. It is applied so as to have a thickness of 200 μm. The treated surface of the release sheet previously treated with silicone or the like is superimposed on the pressure-sensitive adhesive layer thus formed to form a pressure-sensitive adhesive sheet. Further, as another method for obtaining the pressure-sensitive adhesive sheet, a pressure-sensitive adhesive is applied onto a release sheet made of paper or a film subjected to release treatment with a silicone resin or the like, and this pressure-sensitive adhesive layer is bonded to the surface of the support opposite to the ink receiving layer. You may.

The thus prepared adhesive ink-jet image-receiving sheet can be subjected to ink-jet recording on the surface of the ink-receiving layer, and then the release sheet can be removed and attached to an adherend. At this time, in order to prevent the pattern or the like on the surface of the adherend from being seen through, it is preferable that the pressure-sensitive adhesive layer contains a coloring dye or pigment or an inorganic filler. In particular, when a black dye or pigment or titanium oxide is contained in the pressure-sensitive adhesive layer, the opacity increases and the surface of the adherend becomes difficult to see through, which is a more preferable embodiment.

[0032]

The present invention will be described in more detail with reference to the following examples. The present invention is not limited to these examples. The percentages and parts shown below are% by weight and parts by weight, respectively.

<Preparation of Coating Liquid 1 for Ink Receiving Layer> Coating liquid 1 for the ink receiving layer was prepared according to the following composition. Synthetic amorphous silica (Fine Seal X-37B: manufactured by Tokuyama) 10 parts Polyvinyl alcohol (PVA117: manufactured by Kuraray) 5 parts Cationic dye fixing agent (Smileds Resin 1001: manufactured by Sumitomo Chemical) 2 parts Water 83 parts

Example 1 A resin in which 98 parts by weight of a high-density polyethylene resin and 2 parts by weight of talc were mixed as the first layer, and a resin in which 95 parts by weight of a low-density polyethylene resin and 5 parts by weight of titanium oxide were mixed as the second layer, The first layer was extruded to 15 μm and the second layer to 140 μm by a co-extrusion apparatus, and a support was produced by a non-stretched film forming method. The surface of the first layer of the support was subjected to corona discharge treatment, and the coating liquid 1 for the ink receiving layer was applied so as to have a dry solid content of 20 g / m ^2, and the ink jet image receiving sheet of Example 1 was obtained. Produced.

<Preparation of Coating Solution 2 for Inkjet Receptive Layer>
The coating liquid 2 for the ink receiving layer was prepared according to the following composition. Synthetic amorphous silica (Fine Seal X-37B: manufactured by Tokuyama) 30 parts Polyvinyl butyral resin (Eslec BL-S: manufactured by Sekisui Chemical) 3 parts iso-propanol 67 parts

Example 2 A high-density polyethylene resin as a first layer, a resin obtained by mixing 95 parts by weight of a low-density polyethylene resin and 5 parts by weight of titanium oxide as a second layer, and a high-density polyethylene resin as a third layer in a co-extrusion apparatus. 15 μm for the first layer and 140 μm for the second layer.
μm and the third layer were extruded to a thickness of 15 μm, and a support was produced by a non-stretched film molding method. The first of this support
On the surface of the layer, the coating liquid 2 for the ink receiving layer was applied at a dry solid content of 25%.
g / m ² to give an ink jet image receiving sheet of Example 2.

Comparative Example 1 Comparative Example 1 was carried out in exactly the same manner as in Example 1 except that Yupo FPG # 200 (manufactured by Oji Yuka Synthetic Paper) produced by a biaxially stretched film molding method was used as a support. Was prepared.

Comparative Example 2 An ink jet image receiving sheet of Comparative Example 2 was produced in exactly the same manner as in Example 2 except that a single-layer ethylene-vinyl acetate copolymer film (thickness: 50 μm) was used as a support.

Example 3 An acrylic emulsion pressure-sensitive adhesive layer was applied on the opposite side of the ink receiving layer of Example 1 so as to have a thickness of 10 μm.
A release paper was attached to produce an ink jet image receiving sheet of Example 3.

Example 4 An acrylic emulsion pressure-sensitive adhesive layer was applied on the opposite side of the ink receiving layer of Example 2 so as to have a thickness of 10 μm.
The ink-jet image-receiving sheet of Example 4 was produced by laminating release paper.

Example 5 A pressure-sensitive adhesive layer containing 100 parts of an acrylic emulsion solid and 0.1 part of a black dye was applied to a surface opposite to the surface on which the ink receiving layer of Example 2 was provided so as to have a thickness of 10 μm. The ink-jet image-receiving sheet of Example 5 was produced by bonding paper.

Example 6 A pressure-sensitive adhesive layer comprising 100 parts of an acrylic emulsion solid and 5 parts of titanium oxide was applied to the opposite side of the ink receiving layer of Example 2 so as to have a thickness of 10 μm. By laminating, an ink jet image receiving sheet of Example 6 was produced.

Example 7 On the side opposite to the side on which the ink receiving layer of Example 2 was provided, a pressure-sensitive adhesive layer was prepared by mixing 0.1 part of a black dye and 5 parts of titanium oxide with 100 parts of an acrylic emulsion solid so as to have a thickness of 10 μm. Then, a release paper was adhered thereto to produce an ink jet image receiving sheet of Example 7.

Comparative Example 3 An acrylic emulsion pressure-sensitive adhesive layer was applied to the opposite side of the ink receiving layer of Comparative Example 1 so as to have a thickness of 10 μm.
A release paper was adhered to produce an inkjet image receiving sheet of Comparative Example 3.

Comparative Example 4 An acrylic emulsion pressure-sensitive adhesive layer was applied to the opposite side of the ink receiving layer of Comparative Example 2 so as to have a thickness of 10 μm.
A release paper was attached thereto to produce an inkjet image receiving sheet of Comparative Example 4.

Comparative Example 5 A pressure-sensitive adhesive layer comprising 100 parts of an acrylic emulsion solid and 0.1 part of a black dye was applied to the opposite side of the ink receiving layer of Comparative Example 2 so as to have a thickness of 10 μm, and peeled off. The paper was stuck to produce an inkjet image receiving sheet of Comparative Example 5.

Comparative Example 6 An adhesive layer comprising 100 parts of an acrylic emulsion solid and 5 parts of titanium oxide was applied to the opposite side of the ink receiving layer of Comparative Example 2 so as to have a thickness of 10 μm. By laminating, an inkjet image receiving sheet of Comparative Example 6 was produced.

COMPARATIVE EXAMPLE 7 On the opposite side of the ink receiving layer of Comparative Example 2, a pressure-sensitive adhesive layer was prepared by mixing 0.1 part of a black dye and 5 parts of titanium oxide with 100 parts of a solid content of an acrylic emulsion so as to have a thickness of 10 μm. Then, a release paper was adhered thereto to produce an inkjet image receiving sheet of Comparative Example 7.

<Evaluation of Shape Adaptability> An ink jet printer (DesignJet 2500CP) manufactured by Hewlett Packard and a pigment ink U were added to the obtained ink jet image receiving sheet.
Printing was performed using V ink. The printed sheet was affixed to an adherend having a curvature of 100 mmφ to evaluate shape adaptability. In Examples 1 and 2 and Comparative Examples 1 and 2, a commercially available adhesive for plastic was applied to the back surface and attached to the adherend. In Examples 3 to 7 and Comparative Examples 3 to 7, the release paper was peeled off and adhered to the adherend. ；: The sheet is flexible and easy to apply, and no wrinkles or peeling occur. ×: Wrinkles and peeling from the end face occur.

<Evaluation of concealing property of adherend> Characters were written on the adherend with black magic, and an ink-jet image-receiving sheet was attached thereon in the same manner as in the evaluation of shape adaptability, and the degree of transmission of the characters was visually evaluated. ；: No character is seen at all. Δ: Almost invisible, no practical problem. ×: Appears quite transparent.

<Evaluation of Weather Resistance> The printed sample was attached to the outside of the window glass, and one month later, the storage state of the image was visually evaluated. ；: There is no flow of images and coating layers. Δ: The image is slightly faded, but there is no practical problem. X: The image and the coating layer were destroyed.

[0052]

[Table 1]

From Table 1, it can be seen that Examples 1 to 7 in which a laminated structure of at least two layers of a non-stretched thermoplastic resin film was used as a support of an ink jet image receiving sheet,
It can be seen that the inkjet image receiving sheet is excellent in shape adaptability when affixed to a curved adherend and also excellent in concealability of the adherend surface. As can be seen from Comparative Examples 1 and 3, the support subjected to the stretching treatment had poor shape adaptability.
The single-layer film supports of Nos. 4 to 7 are inferior in hiding properties.

[0054]

According to the present invention, by using a laminated structure of at least two layers of a non-stretched thermoplastic resin film as a support of an ink jet image receiving sheet and providing an ink receiving layer thereon, ink jet recording suitability is improved. In addition, it is possible to obtain an inkjet image receiving sheet that is excellent in shape adaptability when affixed to a curved adherend and also excellent in concealability of the adherend surface.

Claims (13)

[Claims] 1. An ink jet image receiving sheet comprising an ink receiving layer provided on a support, wherein the support is a laminated structure of at least two layers of a non-stretched thermoplastic resin film. Sheet. 2. The ink-jet image receiving sheet according to claim 1, wherein said thermoplastic resin is polyethylene. 3. The support comprises a high-density polyethylene as a first layer, a low-density polyethylene as a second layer, and a high-density polyethylene as a third layer from the side on which the ink receiving layer is provided.
2. The ink jet image receiving sheet according to claim 1, which has a layer structure. 4. At least one of the thermoplastic resin films
The inkjet image-receiving sheet according to any one of claims 1 to 3, wherein the layer contains an inorganic filler. 5. The ink-jet image receiving sheet according to claim 3, wherein the low-density polyethylene of the second layer contains an inorganic filler. 6. The high-density polyethylene of the first layer and / or the third layer contains an inorganic filler.
Or the inkjet image receiving sheet according to 5. 7. The ink jet image receiving sheet according to claim 1, wherein the ink receiving layer contains a porous pigment and at least a polymer adhesive. 8. The ink jet image receiving sheet according to claim 7, wherein said polymer adhesive is of an organic solvent soluble type. 9. An ink jet image receiving sheet comprising an ink receiving layer provided on a support, wherein the support is a laminated structure of at least two layers of a non-stretched thermoplastic resin film, and the ink for the support is provided. An ink jet image receiving sheet having a pressure-sensitive adhesive layer on the side opposite to the receiving layer. 10. The ink jet image receiving sheet according to claim 9, wherein the pressure-sensitive adhesive layer contains a coloring dye. 11. The ink jet image receiving sheet according to claim 10, wherein said coloring dye is a black dye. 12. The ink jet image receiving sheet according to claim 9, wherein said pressure-sensitive adhesive layer contains an inorganic filler. 13. The ink jet image receiving sheet according to claim 12, wherein said inorganic filler is titanium oxide.