JP2001039020A - Recording sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an ink jet recording sheet having a sense of peculiar gloss while having a peculiar appearance for a woven fabric by sequentially laminating an ink receiving layer, a woven fabric, an adhesive resin layer and a metal layer. SOLUTION: An ink jet recording sheet having a sense of peculiar gloss while having a peculiar appearance for a woven fabric is formed by sequentially laminating an ink receiving layer, a woven fabric, an adhesive resin layer and a metal layer or sequentially laminating a transparent ink receiving layer, the woven fabric, the adhesive resin layer and the metal layer. In this case, the woven fabric having a weaving density 20 to 60 pieces/inch or more in lateral and longitudinal directions is used. The metal layer is formed of an aluminum foil. At least one or more types of white pigments can be used in the ink receiving layer and the transparent ink receiving layer. Of them, as the white pigment contained in the transparent ink receiving layer as a main component, a porous inorganic pigment is preferred, and a porous synthetic amorphous silica, porous magnesium carbonate, porous alumina or the like is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording sheet, and more particularly, to an ink jet recording sheet having a unique luster while having a unique appearance of a woven fabric.

[0002]

2. Description of the Related Art Ink-jet recording is a method in which minute droplets of ink are made to fly and adhere to a recording sheet such as paper by various operating principles to record images and characters. It has features such as easy multi-coloring, great flexibility in recording patterns, and no need for development-fixing, and is rapidly spreading in various applications as a recording device for various figures including Chinese characters and color images. Furthermore, the image formed by the multi-color inkjet method is
It is possible to obtain a record comparable to multicolor printing by the plate making method. In addition, in applications requiring a small number of copies, it is being widely applied to the field of full-color image recording because of its low cost.

As recording sheets used in the ink jet recording system, efforts have been made in terms of apparatuses and ink compositions in order to use high-quality paper and coated paper used for ordinary printing and writing. However, with the improvement of the performance of ink jet recording apparatuses such as high-speed, high-definition and full-color apparatuses, and expansion of applications, more advanced characteristics are also required for recording sheets.

[0004] That is, the recording sheet has a high density of print dots, a bright and vivid color tone, quick absorption of ink, no ink bleeding or bleeding even when the print dots overlap, High image reproducibility is required such that the diffusion in the horizontal direction is not unnecessarily large and the periphery is smooth and not blurred.

Conventionally, paper or film has been used as a base material of an ink jet recording sheet. However, with recent diversification of tastes, ink jet recording sheets based on fabrics represented by woven fabrics have been developed.

Further, with the spread of computers and inkjet printers, it has become possible to easily enjoy image output at home. For example, it is possible to obtain image data of a painting such as an oil painting, and print and decorate the image by an individual. However, when printing is performed on a general ink jet recording sheet in which the support is paper or a film, the image is flat, and even if an image such as an oil painting is printed, the image becomes cheap. In recent years, Patent No. 2858559,
As described in JP-A-62-53493, an ink jet recording sheet using a fabric as a support has also been developed, and although the unevenness of the surface has been expressed, the glossiness peculiar to a painting has not yet been expressed.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an ink jet recording sheet having a unique glossiness while having a unique appearance of a woven fabric.

[0008]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the following invention.

That is, there is provided an ink jet recording sheet in which an ink receiving layer, a woven fabric, an adhesive resin layer, and a metal layer are sequentially laminated.

[0010] The present invention also provides an ink jet recording sheet characterized in that a transparent ink receiving layer, a woven fabric, an adhesive resin layer, and a metal layer are sequentially laminated.

The ink jet recording sheet according to the invention is characterized in that the weaving density of the woven fabric is not less than 20 yarns / inch and not more than 60 yarns / inch.

[0012] The invention of the ink jet recording sheet is characterized in that the metal layer is an aluminum foil.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The ink jet recording sheet of the first invention has a structure in which an ink receiving layer, a woven fabric, an adhesive resin layer, and a metal layer are sequentially laminated. Generally, a woven fabric is obtained by alternately weaving warp yarns and weft yarns, and therefore, there are holes near the intersections. The metal surface of the stacked metal layers can be seen through the holes. Therefore, the present inventors have found that since the woven fabric itself has a thickness, the metallic luster of the metal surface changes depending on the position of a viewer, that is, the viewing angle.

Further, in the ink jet recording sheet of the second invention, the transparent ink receiving layer, the woven fabric, the adhesive resin layer,
Since the metal layers are sequentially laminated, not only the glossiness seen through the pores of the woven fabric is more prominent, but also a slight glossiness is imparted to the woven fabric, and the decorativeness is further improved. .

Further, although not originally expected, in the ink jet recording sheet of the present invention, the weaving density of the woven fabric forming the support is specified to be not less than 20 yarns / inch and not more than 60 yarns / inch. As a result, it has been found that the position of the glossy portion gives the viewer an impression close to an actual painting depending on the viewing position.

As the metal layer used in the ink jet recording sheet of the present invention, a metal foil or a metal deposition layer can be used. When a metal foil is used as a metal layer, it may be bonded to a woven fabric via an adhesive resin layer, and the metal foil is not particularly limited, such as aluminum, gold, silver, copper, chromium, indium, and tin. The thickness is not particularly limited, but is preferably about 5 to 20 μm without causing a problem in printer transportability. In the case where the metal vapor-deposited layer is a metal layer, the metal vapor-deposited layer may be provided on the adhesive resin layer after the adhesive resin layer is provided on the woven fabric. For example, the vacuum tank may be provided with a high vacuum of about 10 ^-4 Torr or more. After that, when a high-purity metal such as aluminum, nickel, zinc, copper, silver, or gold is heated and melted in a crucible and evaporated, the metal fine particles adhere to the adhesive resin layer and aggregate to form a metal vapor deposition film.

In the ink jet recording sheet of the present invention, an aluminum foil is preferably used as the metal layer. Aluminum foil is most suitable for the purpose of the present invention because of its surface stability and glossiness.

The fibers constituting the woven fabric used in the present invention include, for example, polyester fibers such as polyethylene terephthalate, polybutylene terephthalate, and homopolymers and copolymers of modified polymers of these polymers, polypropylene, polyethylene, and polystyrene. Or polyolefin fibers such as homopolymers and copolymers such as modified polymers of these polymers; polyacrylonitrile fibers such as acrylic fibers and modacrylic fibers; nylon fibers such as nylon 6 and nylon 66; and polyvinyl alcohol fibers. , Urethane fiber / organic synthetic fiber; etc .; regenerated cellulose fiber such as rayon; and regenerated fiber such as fiber spun from collagen, alginic acid, chitin or the like; spun fiber such as acetate fiber Fiber; natural fibers such as cellulosic fibers such as hemp, cotton and pulp, and protein fibers such as wool and silk; and various fibers such as inorganic fibers such as metal fibers, glass fibers and carbon fibers. These can be used alone or in combination.

In the present invention, the woven fabric is not particularly limited as long as the weaving density of both warp and weft yarns is from 20 yarns / inch to 60 yarns / inch. When the weaving density is less than 20 yarns / inch, it is easy to give an impression that the metal layer is present on the back surface depending on the viewing angle. Sometimes. As the woven fabric, woven fabrics of woven fabrics such as plain weave, twill weave, satin weave, etc. can be used. can do. When the weaving density is in this range, the degree of gloss of the ink jet recording sheet of the present invention changes depending on the angle at which the ink receiving surface is viewed, so that an atmosphere closer to a real painting can be obtained. Further, in the present invention, it is preferable to configure the woven fabric with a yarn having a diameter of 200 μm or more, since the appearance of unevenness is emphasized.

The adhesive resin constituting the adhesive resin layer in the present invention is not particularly limited as long as it is an adhesive or pressure-sensitive adhesive generally used in the field of paper. Examples of the resin used include a rubber-based adhesive resin and a synthetic rubber-based resin. Adhesive resin, modified rubber adhesive resin, polyvinyl acetate resin adhesive resin, polyurethane resin adhesive resin, nitrocellulose adhesive resin, polyester resin adhesive resin, urea resin adhesive resin, phenol resin adhesive resin, melamine resin adhesive Adhesive resin, resorcinol adhesive resin, polyvinyl alcohol adhesive resin, sodium silicate adhesive resin, epoxy resin adhesive resin, cyanoacrylic resin adhesive resin, acrylic resin adhesive resin, silicone resin adhesive resin, unsaturated polyester resin Adhesive resin, ethylene / vinyl acetate adhesive resin,
A polyamide resin-based adhesive resin, an aliphatic or aromatic polyurethane-based adhesive resin, a copolymerized nylon-based adhesive resin, or the like is used, and a polyurethane-based adhesive resin is preferably used from the viewpoint of adhesive strength, heat resistance, and the like. The coating shape of the adhesive resin may be an organic solvent type, an aqueous solution type, an emulsion type, a non-solvent type, a reaction hardening type, or a hot melt type. The method of curing the adhesive resin may be natural drying, oxidative curing, heat curing, addition polymerization, condensation polymerization, heat drying, two-part curing, or radiation curing. Alternatively, a thermoplastic resin such as melt-extruded polyethylene or polypropylene may be used as the adhesive resin.

In the ink jet recording sheet of the present invention,
When an ink-receiving layer or a transparent ink-receiving layer is provided, the coating amount is not particularly limited.However, if it is too small, the image density, color, and sharpness are low, and the ink is applied in the surface direction of the support. The dot shape is deteriorated, called feathering, which is diffused and jagged like a bird. 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 due to a decrease in the coating speed, but also the drying under high load constitutes the transparent ink receiving layer. The binder in the coating composition moves to the surface of the transparent ink receiving layer together with the solvent that evaporates, and reduces the amount of voids on the surface. The problem which occurs in the transparent ink receiving layer having a large coating amount depends on the concentration of the coating composition and the ability of the drying step, but is preferably 1 to 50 g / m ² .

In the ink receiving layer and the transparent ink receiving layer used in the present invention, one or more known white pigments can be used. However, as a matter of course, in the case of the transparent ink receiving layer, the range is such that the transparency of the coating film is not impaired. For example, light calcium carbonate, heavy calcium carbonate, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate,
White inorganic pigments such as magnesium silicate, synthetic amorphous silica, colloidal silica, colloidal alumina, pseudoboehmite, aluminum hydroxide, alumina, lithopone, zeolite, hydrohaloysite, magnesium carbonate, magnesium hydroxide, styrene-based plastic pigment, and acrylic Organic pigments such as plastic pigment, polyethylene, microcapsules, urea resin, and melamine resin. Among the above, as the white pigment contained as a main component in the transparent ink receiving layer, a porous inorganic pigment is preferable, and porous synthetic amorphous silica, porous magnesium carbonate, porous alumina and the like can be mentioned. A porous synthetic amorphous silica having a large pore volume is preferred.
Regarding the transparent ink receiving layer, it is preferable that the amount of the white pigment used is as small as possible even when these white pigments are used.

Examples of the adhesive include polyvinyl alcohol, vinyl acetate, oxidized starch, etherified starch, cellulose derivatives such as carboxymethylcellulose and hydroxyethylcellulose, casein, gelatin, and the like.
Soy protein, silyl-modified polyvinyl alcohol, etc .; conjugated diene copolymer latex such as styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer;
Acrylic polymer latex such as polymer or copolymer of acrylic acid ester and methacrylic acid ester, polymer or copolymer of acrylic acid and methacrylic acid; vinyl polymer latex such as ethylene vinyl acetate copolymer; or Functional group-modified polymer latex by a monomer containing a functional group such as a carboxyl group of these various polymers; aqueous adhesives such as thermosetting synthetic resin systems such as melamine resin and urea resin;
Synthetic resin-based adhesives such as polymethyl methacrylate, polyurethane resin, unsaturated polyester resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, and alkyd resin are used, and one or more of them are used.

The ink receiving layer or the transparent ink receiving layer of the present invention may contain a cationic dye fixing agent. Examples of the cationic dye fixing agent include secondary amines, tertiary amines, and quaternary ammonium salts. These cationic dye fixing agents include a water-soluble direct dye, which is a dye component of an aqueous ink in an ink receiving component, and a water-soluble dye. To form an insoluble salt with sulfonic acid group, carboxyl group, amino group, etc. in the acidic acid dye, capture the dye in the transparent ink receiving layer,
By improving the color and forming an insoluble salt, it is possible to suppress the flow or bleeding of the ink due to the dripping or moisture absorption of water and to improve the water resistance.

Further, other additives include a pigment dispersant, a thickener, a flow improver, an antifoaming agent, a foam inhibitor, a release agent,
Transparent foaming agents, penetrants, coloring dyes, coloring pigments, fluorescent whitening agents, ultraviolet absorbers, antioxidants, preservatives, anti-binders, water-proofing agents, wet strength agents, dry strength agents, etc. It can be appropriately compounded in the ink receiving layer.

The method for coating the ink receiving layer or the transparent ink receiving layer is performed by using various machines such as various blade coaters, roll coaters, air knife coaters, bar coaters, rod blade coaters, short dwell coaters, and size presses. Alternatively, it can be used off-machine. Further, after coating, finishing may be performed using a calendar such as a machine calendar, a TG calendar, a super calendar, and a soft calendar.

In order to produce the ink jet recording sheet of the present invention, an ink receiving layer or a transparent ink receiving layer may be applied to a woven fabric and then an adhesive resin layer or a metal layer may be laminated. After laminating the resin layer and the metal layer, an ink receiving layer or a transparent ink receiving layer may be applied to the surface of the woven fabric, but the ink receiving layer or the transparent ink receiving layer was also present in the pores. The latter is preferred because it is more advantageous in ink drying properties and the like.

Since the ink jet recording sheet of the present invention has a unique glossiness in addition to the unique appearance of a woven fabric, it is possible to create a closer interval to the real thing by printing a picture or the like.

[0029]

EXAMPLES The present invention will be described below with reference to examples of the present invention, but the present invention is not limited to these examples. In Examples and Comparative Examples, “parts” and “%”
Unless indicated otherwise, parts by weight and% by weight are indicated.

Example 1 A cotton cloth (8th yarn, plain weave, vertical and horizontal cotton density: 19 / inch) was prepared as a woven cloth, and low-density polyethylene was laminated as an adhesive resin to a thickness of 15 μm by a melt extrusion die. Next, a degree of vacuum of 5 was applied to the adhesive resin layer side of this sheet.
Aluminum was deposited at × 10 ⁻⁴ Torr to a thickness of about 100 Å. Further, as an ink receiving layer composition, synthetic amorphous silica (Nipsil®)
S150: Nippon Silica Kogyo) 100 parts, vinyl acetate-
Ethylene-special ester adhesive (Sumika Flex 9
51: 30 parts, manufactured by Sumitomo Chemical Co., Ltd., cationic dye fixing agent (Sumireze Resin 1001: manufactured by Sumitomo Chemical Co., Ltd.) 20
And the mixture was adjusted to a solid content concentration of 13%. This was used as an ink-receiving layer composition, and the ink-receiving layer composition was applied to the woven fabric surface of the metal-deposited sheet prepared above using an air knife coater so as to have a dry coating amount of 20 g / m ² and dried. An ink receiving layer was formed to obtain an ink jet recording sheet of the present invention.

Example 2 A cotton cloth (8th yarn, plain weave, vertical / horizontal cotton density: 19 / inch) was prepared as a woven cloth, and low-density polyethylene was laminated as an adhesive resin to a thickness of 15 μm by a melt extrusion die. Next, a degree of vacuum of 5 was applied to the adhesive resin layer side of this sheet.
Aluminum was deposited at × 10 ⁻⁴ Torr to a thickness of about 100 Å. Further, as the transparent ink receiving layer composition, 10 parts of synthetic amorphous silica (Fanseal X37B, manufactured by Tokuyama Soda), 130 parts of polyvinyl alcohol (PVA117, manufactured by Kuraray), and cationic dye fixing agent (Sumireze resin 1001, Sumitomo) Chemical industry)
Using 20 parts, the solution was prepared to a solid content concentration of 15%. This was used as a transparent ink receiving layer composition, and the transparent ink receiving layer composition was applied to the woven fabric surface of the metal vapor-deposited sheet prepared above using an air knife coater so as to have a dry coating amount of 20 g / m ² and dried. Thus, a transparent ink receiving layer was formed to obtain an ink jet recording sheet of the present invention.

Example 3 A cotton cloth (8th yarn, plain weave, vertical and horizontal cotton density: 19 / inch) was prepared as a woven cloth, and an emulsion type adhesive resin VP-57 (manufactured by Kanebo NSC) was used as an adhesive resin. It was applied with a direct gravure coater to a dry weight of 6 g / m ² and dried with hot air, and a 15 μm-thick aluminum foil was laminated as a metal foil to obtain a metal foil-bonded sheet. An ink jet recording sheet of the present invention was obtained on the woven fabric surface of this metal foil laminated sheet in the same manner as in Example 1.

Example 4 An ink jet recording sheet of the present invention was obtained in the same manner as in Example 2 except that the woven fabric was changed to a cotton cloth (8th yarn, plain weave, vertical and horizontal cotton density: 22 / inch).

Example 5 An ink jet recording sheet of the present invention was obtained in the same manner as in Example 2 except that the woven fabric was changed to a cotton cloth (8th yarn, plain weave, and a vertical and horizontal cotton density of 55 / inch).

Comparative Example 1 Cotton cloth (8th yarn, plain weave, vertical and horizontal cotton density 19 / inch)
The same transparent ink-receiving layer composition as in Example 1 was applied to the resulting composition using a size press coater so that the dry weight was 30 g / m ^2, and dried to obtain an ink jet recording sheet.

Comparative Example 2 Aluminum was vapor-deposited on one surface of a 50 μm polyethylene terephthalate film at a degree of vacuum of 5 × 10 ⁻⁴ Torr and a thickness of about 100 Å. next,
The same transparent ink receiving layer composition as in Example 1 was applied to the film side with an air knife coater so as to have a dry weight of 20 g / m ^2, and dried to obtain an ink jet recording sheet having a metallic luster.

<Test Method> 1) Appearance After cutting the ink jet recording sheets prepared in Examples and Comparative Examples to A3 size, an oil painting image is printed by an ink jet printer (JV2-130 manufactured by Mimaki Engineering). The printed sheet was put in a picture frame, hung on a wall, observed at a distance of about 1 m, and evaluated on a scale of 1 to 5. The more the image looks closer to the oil painting, the larger the value and the better.

2) Gloss After cutting the ink jet recording sheets prepared in Examples and Comparative Examples to A4 size, an oil painting image is printed by an ink jet printer (JV2-130 manufactured by Mimaki Engineering). The printed sheet is affixed to the wall, and the light source is illuminated while moving the light source in the horizontal direction, and the degree of gloss is observed. Glossiness is partially seen, and the glossiness changes as the position of the light source changes, the glossiness is excellent, and the one with little change in glossiness has the same level of glossiness, and there is a glossiness completely different from the picture Those having no glossiness or those having no glossiness were judged to have poor glossiness.

[0039]

[Table 1]

Evaluation: As is clear from the table, the ink jet recording sheet of the present invention has a unique appearance of a painting style, especially an oil painting style, and has a glossiness depending on the position of the light source as in Examples 4 and 5. It can be understood that the image can be changed to change the image. On the other hand, if the support is made of only woven cloth or has a metallic luster on the entire surface as in the comparative example, a painting-like feeling cannot be expressed.

[0041]

When a picture, especially an oil picture, is printed using the ink jet recording sheet of the present invention, the glossiness and appearance of a painting can be expressed, which is useful for interior decoration and the like.

Claims (4)

[Claims] 1. An ink jet recording sheet comprising an ink receiving layer, a woven fabric, an adhesive resin layer, and a metal layer sequentially laminated. 2. A transparent ink receiving layer, a woven fabric, an adhesive resin layer,
An ink jet recording sheet characterized by sequentially laminating metal layers. 3. The ink jet recording sheet according to claim 1, wherein the weaving density of the woven fabric is not less than 20 / inch and not more than 60 / inch. 4. The ink jet recording sheet according to claim 1, wherein the metal layer is an aluminum foil.