JPH11227317A - Medium to be recorded for ink jet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain clear images by giving an excellent absorptiveness, fixing property, water resistance, and anti-bleeding property of ink to a medium to be recorded for ink jet having a dye fixing layer consisting of an interlayer compound and a binder to receive and hold a water soluble dye by an intercalation reaction. SOLUTION: The medium to be recorded for ink jet has a dye fixing layer 1 consisting of an interlayer compound and a binder to receive and hold a water soluble dye by an intercalation reaction formed on a substrate 2, wherein a polyoxy ethylene derivative is contained in the dye fixing layer 1. When at least one ink absorptive layer consisting of ink absorptive resin is formed on the dye fixing layer 1, a polyoxy ethylene derivative is contained in the ink absorptive 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 recording medium having a dye fixing layer containing an intercalation compound for receiving and retaining a water-soluble dye in an aqueous ink for ink jet through an intercalation reaction.

[0002]

2. Description of the Related Art One of the methods for outputting image information and character code information produced by a personal computer or a word processor to a recording medium such as paper or an OHP film is to apply an ink containing a water-soluble dye to an electric field, heat, or the like. There is an ink jet recording method in which an image is formed by discharging a recording medium using a pressure or the like as a driving source from a recording nozzle to a recording medium.

[0003] This ink jet recording system has the advantages of low noise at the time of recording, low running cost, image formation on plain paper, and the absence of waste such as ink ribbon. In homes and homes, its use has been expanding in recent years.

As an ink jet recording medium used in such an ink jet recording system, an interlayer compound capable of retaining a water-soluble dye by an intercalation reaction is formed of a polyvinylpyrrolidone resin, a polyvinyl butyral resin, a hydroxypropyl cellulose resin or A structure in which a dye fixing layer formed by dispersing in a binder such as a polyvinyl alcohol resin is provided on a substrate has been proposed (JP-A-7-68925).

[0005]

However, in the case of an ink jet recording medium described in JP-A-7-68925, improvements in ink fixability, discoloration and discoloration during storage, reduction in print density, and the like are not achieved. Although it can be seen, ink absorption and water resistance are insufficient, especially in areas where ink droplets adhere at high density, before the ink droplets are absorbed by the dye fixing layer of the inkjet recording medium. There is a problem that the resolution is reduced due to mixing.

An object of the present invention is to solve the above-mentioned problems of the prior art. In the present invention, a dye fixing layer comprising a binder and an interlayer compound for receiving and retaining a water-soluble dye by an intercalation reaction is formed. It is an object of the present invention to provide an ink jet recording medium having excellent ink absorbency, fixability, water resistance and bleeding resistance, and capable of maintaining a clear image.

[0007]

Means for Solving the Problems As a result of intensive studies, the present inventor has found that a polyoxyethylene derivative is contained in an ink absorbing layer or a dye fixing layer located on the surface of an ink jet recording medium to form a dye fixing layer. The present inventors have found that a clear image free of ink bleeding can be maintained, and the present invention has been completed.

That is, a first aspect of the present invention is a recording medium for ink-jet recording in which a dye fixing layer comprising a binder and an interlayer compound for receiving and holding a water-soluble dye by an intercalation reaction is formed on a substrate. The present invention provides an inkjet recording medium, wherein the dye fixing layer contains a polyoxyethylene derivative.

In a second aspect of the present invention, there is provided a dye fixing layer comprising a binder and an interlayer compound for receiving and holding a water-soluble dye by an intercalation reaction, and further comprising an ink absorbing Provided is an inkjet recording medium having at least one ink absorbing layer made of a resin, wherein the ink absorbing layer contains a polyoxyethylene derivative.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

FIG. 1 is a sectional view of an ink jet recording medium according to the first embodiment of the present invention, which has a structure in which a dye fixing layer 1 is formed on a substrate 2. Here, the dye fixing layer 1 has a structure in which an interlayer compound that receives and retains a water-soluble dye by an intercalation reaction is dispersed in a binder, and is particularly characterized by containing a polyoxyethylene derivative. As described above, by including the polyoxyethylene derivative in the dye fixing layer, the water absorption and the bleeding resistance of the obtained image are improved without impairing the absorption and fixing properties of the ink, and a clear image is obtained. Can be held.

The polyoxyethylene derivatives to be contained in the dye fixing layer 1 include polyoxyethylene alkyl ethers such as polyoxyethylene cetyl ether, polyoxyethylene lauryl ether, and polyoxyethylene oleyl ether; polyoxyethylene nonyl phenol ether; Polyoxyethylene alkylphenol ethers such as oxyethylene octyl phenol ether; polyoxyethylene lauryl amino ether, polyoxyethylene alkyl amino ethers such as polyoxyethylene stearyl amino ether; polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate; Polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monooleate And the like. Further, the polyoxyethylene derivative also includes a block polymer such as polyoxyethylene polypropylene glycol.

Dye fixing layer of polyoxyethylene derivative 1
When the content is too small, the dot reproducibility is insufficient. When the content is too large, the image tends to bleed. Therefore, the content is preferably from 0.1 to 100 parts by weight based on 100 parts by weight of the resin component containing the binder.
80 parts by weight, more preferably 0.5 to 40 parts by weight.

The binder used in the dye fixing layer 1 includes
Aqueous polyurethane emulsion resins, polyvinylpyrrolidone resins, hydroxypropyl alcohol resins, hydroxypropyl methylcellulose resins, polyvinyl alcohol resins, ethylcellulose resins, gelatin and the like can be preferably mentioned. If the content of these resins in the binder is too large, the sufficient effect of the present invention cannot be obtained, so the content is preferably 90% by weight or less, more preferably 60% by weight or less.

In the first aspect of the present invention, the interlayer compound contained in the dye fixing layer 1 has a layered structure and a layered inorganic compound having an exchangeable ion capable of ion exchange with a water-soluble dye between its hydrophilic layers. Molecules can be preferably exemplified. Here, the exchangeable ion of the layered inorganic polymer is an exchangeable cation such as a sodium ion when the water-soluble dye is a water-soluble cationic dye, and when the water-soluble dye is a water-soluble anionic dye. Is an exchangeable anion such as a carboxyl anion. These may be used simultaneously.

Examples of the layered inorganic polymer having exchangeable cations (hereinafter, referred to as cation exchangeable intercalation compounds) include natural or synthetic layered silicates or their calcined products. Formula (1) having an octahedral smectite structure:

[0017]

(X, Y) _2-3 Z ₄ O ₁₀ (OH) ₂ .mH ₂ O. (W _1/3 ) (1) (where X is Al, Fe (III), Mn (III) ) Or Co
(III), Y is Mg, Fe (II), Ni, Zn or Li, Z is Si or Al, W is K, Na
Or Ca, H ₂ O is interlayer water, and m represents a number. The montmorillonite group mineral which is a kind of the clay mineral represented by the formula (1) can be preferably used. Specifically, depending on the combination of X and Y and the number of substitutions, montmorillonite, magnesia montmorillonite, iron montmorillonite, iron magnesia montmorillonite, beidellite, aluminian beidellite, nontronite, aluminian nontronite, saponite, aluminian Natural products and synthetic products such as saponite, hectorite, and sauconite can be exemplified.

It should be noted that a compound in which the OH group in the above formula (1) is substituted with fluorine can also be used.

In the first invention, besides the montmorillonite group mineral of the formula (1), mica group minerals such as sodium silicic mica, sodium teniolite and lithium teniolite can be used as the cation exchange intercalation compound. .

Similarly to the synthetic clay mineral, examples of the cation-exchangeable interlayer compound having a layered structure and having exchangeable cations include acidic salts such as zirconium phosphate and layered hydrous titanium oxide. Since these have optical concealing properties or inherent colors, they can be used when transparency, glossiness and whiteness are not simultaneously required for the dye fixing layer 1. In addition, when a fine powder having a pure white color such as a synthetic silicon salt containing no impurities is used as the cation exchangeable intercalation compound as described above, the fine powder crystal itself is optically transparent. It is possible to form the dye fixing layer 1 which realizes high saturation comparable to a photograph.

The exchangeable cation to be present between the layers of the cation exchangeable intercalation compound used in the first invention is an inorganic cation which is easily solvated in a high dielectric constant medium such as water or alcohol, for example, Li ⁺ , Na. ⁺ , K ^{+ and the} like, alkaline earth metal ions such as Mg ²⁺ , H ⁺ (in this case, so-called clay acid) and the like can be used.

It should be noted that among the alkaline earth metal ions, C
a ²⁺ and Ba ²⁺ tend to provide an interlayer that is less likely to solvate than the other exchangeable inorganic cations described above.

In order to improve the dispersibility of the cation-exchange intercalation compound in the binder and to further improve the swellability of the cation-exchange intercalation compound in a non-aqueous solvent such as alcohol, one of the exchangeable inorganic cations of the cation-exchange intercalation compound is used. The portion may be replaced with an organic cation that achieves the effect of increasing the interlayer distance (pillar effect) or the effect of partially hydrophobizing the interlayer. As such an organic cation, a quaternary ammonium ion or a phosphonium ion, such as an alkylphosphonium ion or an arylphosphonium ion, can be preferably used. Here, in the case of a quaternary ammonium ion, at least three of the four alkyl groups each have 4 or more, preferably 8 or more carbon atoms. When the number of long-chain alkyls is small, the pillar effect is not sufficient, and it is difficult to secure a layer as a fixing seat (= exchangeable inorganic cation). For example, when n-octyltrimethylammonium ion is used, even if it occupies almost the fixing seat, the layer interval does not increase to about 4 Å or more, and an excessively hydrophobic layer is provided, which is not preferable in the present invention.

The layered inorganic polymer having exchangeable anions (hereinafter referred to as anion-exchange intercalation compound) used in the first invention is a kind of 0: 1 type clay mineral, and is an AlO ₆ octahedral. A layered hydrotalcite group mineral formed of a sheet is preferably exemplified. A typical example of such a hydrotalcite group mineral is the formula (2) or (3)

[0025]

Embedded image [MII _1-x MI _x (OH) ₂ ] ^{+ X} [A _{x / n} · mH ₂ O] ^−x (2) (where MII is a divalent metal ion of Mg, Ni, Ca, M
I represents a trivalent metal ion of Al, A represents an n-valent anion, and x and m are numbers satisfying 0.1 <x <0.4 and 0 <m <2. )

[0026]

Embedded image [LiAl ₂ (OH) ₆ ] ⁺¹ [Al _{/ n} · mH ₂ O] ⁻¹ (3) (where A represents an n-valent anion, and m represents 0 <m <2) Is a number that satisfies the formula). In particular, as the hydrotalcite group mineral of the formula (2), the formula (4)

[0027]

Embedded image Natural hydrotalcite represented by Mg ₆ Al ₂ (OH) ₁₆ .CO ₃ .4H ₂ O (4) is preferred.

Although slightly different in composition from the natural hydrotalcite of formula (4), synthetic hydrotalcite is also commercially available. The fine powder of this synthetic hydrotalcite has a pure white color without any impurities, but the crystal itself is optically transparent. Dye fixing layer 1 that realizes the degree
Can be formed.

In addition to the hydrotalcite group minerals described above, examples of anion-exchangeable intercalation compounds include hydrated oxides such as titanium, zirconium, lanthanum, and bismuth, and phosphate hydroxides. Since it has a hiding property or a unique color, it can be used when transparency, glossiness and whiteness are not simultaneously required for the dye fixing layer 1.

Examples of the first exchangeable anions are present between layers of anion exchange intercalation compound used in the present invention, easy inorganic anions solvated high dielectric constant medium such as water or alcohol, for example NO ₃ ^-, SO ₄ ²⁻ , ClO ₄ ⁻ , Fe (C
N) ₆ ^4- , a heteropolyphosphate ion or a hydrophilic organic anion such as a lower carboxylate ion can be used.

The higher carboxylate ion tends to give an interlayer which is less likely to be solvated than the above-mentioned exchangeable inorganic anion.

In order to improve the dispersibility of the anion-exchangeable intercalation compound in the binder and further improve the swelling of the anion-exchangeable intercalation compound in a non-aqueous solvent such as an alcohol, one of the exchangeable inorganic anions of the anion-exchangeable intercalation compound is improved. The portion may be replaced with an organic anion that achieves the effect of increasing the interlayer distance (pillar effect) or the effect of partially hydrophobizing the interlayer. Examples of such an organic anion include a carboxylate anion, a sulfonate anion, an ester anion, and a phosphate anion.

Such an organic anion usually has an alkyl group or an alkenyl group, but when the number of carbon atoms is small, the pillar effect is not sufficient, and the interlayer as an anchoring seat (= exchangeable inorganic anion) is used. Is difficult to secure. Further, if the amount is too large, substitution becomes difficult, so that the carbon number is preferably 5 to 20.

In the first embodiment of the present invention, the dye fixing layer 1 may contain, if necessary, various additives (for example, a crosslinking agent, a plasticizer, an ultraviolet absorber, and a fluorescent brightening agent) used in the conventional dye fixing layer. Agents, other hydrophilic resins, etc.).

In the first aspect of the present invention, the weight ratio of the interlayer compound to the binder in the dye fixing layer 1 is such that if the amount of the interlayer compound is too small, the amount of the water-soluble dye retained by the intercalation reaction decreases. When the amount is too large, the amount of the binder is relatively reduced and the adhesiveness and dispersibility of the dye fixing layer 1 are reduced.
2, more preferably 1: 0.2 to 1: 1.5.

The thickness of the dye fixing layer 1 is usually 2 to 4
0 μm, preferably 4 to 15 μm.

In the recording medium for ink jet recording of the first invention, the substrate 2 can be arbitrarily selected from paper, synthetic paper, plastic paper, metal plate, metal foil, plastic film on which aluminum or the like is deposited, and the like. A base material subjected to an easy adhesion treatment with an organic resin or the like can also be used. In addition, it is necessary to be light transmissive for applications such as OHP.

Next, the recording medium for ink-jet recording of the second invention shown in FIG. 2 will be described.

This ink-jet recording medium has an ink-absorbing layer 3 made of an ink-absorbing resin on the dye-fixing layer 1.
Is formed. The ink absorbing layer 3 temporarily receives the ink adhered to the surface thereof and transmits the ink to the dye fixing layer 1. The ink absorbing layer 3 contains the same polyoxyethylene derivative as that described in FIG. Features. As a result, it is possible to improve the water resistance and bleeding resistance of the obtained image without impairing the ink absorbency and fixing property of the dye fixing layer 1, and to maintain a clear image.

If the content of the polyoxyethylene derivative in the ink absorbing layer 3 is too small, dot reproducibility is insufficient, and if it is too large, image bleeding is likely to occur. Preferably 0.1 to 8
0 parts by weight, more preferably 0.5 to 40 parts by weight.

As the ink absorbing resin used for the ink absorbing layer 3, a conventionally known resin can be used.
For example, hydroxypropyl cellulose resin, polyvinyl alcohol resin, gelatin, hydratable polyvinyl acetal resin, and polyvinylpyrrolidone resin can be mentioned.

When the thickness of the ink absorbing layer 3 is too large, the ratio of the dye fixed to the dye fixing layer 1 is reduced and the dye fixing property is deteriorated, so that it is usually 5 μm or less, preferably 3 μm.
It is as follows.

The ink absorbing layer 3 may be a single layer, or may have a multilayer structure composed of two or more ink absorbing resins.

The dye fixing layer 1 of the recording medium for ink jet recording shown in FIG. 2 has a structure in which an interlayer compound for receiving and retaining a water-soluble dye by an intercalation reaction is dispersed in a binder. As the interlayer compound and the binder, those described in the first recording medium for ink jet recording of the present invention can be used. In addition, as the base material 2 in the inkjet recording medium of FIG. 2, the substrate 2 described in the inkjet recording medium of the first embodiment of the present invention can be used.

The dye fixing layer 1 of the recording medium for ink jet recording shown in FIG. 2 may or may not contain the polyoxyethylene derivative shown in FIG.

The first and second recording media for ink-jet recording of the present invention can be produced by a conventional method. For example, the intercalation compound and the binder are dispersed in a solvent, the dispersion liquid is applied on the base material 2 and dried to form the dye fixing layer 1, whereby the inkjet recording material of the first invention is formed. A medium can be made. In addition, an ink-absorbing resin solution is further applied on the dye-fixing layer 1 and dried to form the ink-absorbing layer 3, whereby the ink jet recording medium of the second invention can be manufactured.

When the silicone oil is contained in the dye fixing layer 1, the silicone oil may be added to a dispersion containing an interlayer compound and a binder and applied. When the ink absorbing layer 3 contains silicone oil, the silicone oil may be added to the ink absorbing resin solution and applied on the dye fixing layer 1.

The above-described first and second ink jet recording media of the present invention can be used in the same manner as conventional ink jet recording media.

[0049]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments.

Examples 1 to 27 and Comparative Example 1 In a mixed solvent of 8 g of isopropyl alcohol and 72 g of water, a polyurethane emulsion (Superflex E-2000, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) was added as a binder. As an intercalation compound, an organic acid-treated hydrotalcite (10 g of hydrotalcite adsorbed to 10 mg of malic acid) and a polyoxyethylene derivative shown in Table 1 or 2 are added, and the mixture is dispersed by bead milling for 8 hours. A liquid was obtained. The resulting dispersion was applied to a 100 μm-thick easily-adhesive transparent polyester film (D-535, manufactured by ICI) with a wire bar to a dry thickness of 8 μm, and dried at 90 ° C. for 2 minutes. Examples 1-27 as shown in FIG. 1 by forming a fixing layer
Was manufactured.

The ink jet recording medium of Comparative Example 1 was produced by the same operation as in Examples 1 to 27 except that no polyoxyethylene derivative was used.

Examples 28 to 46 and Comparative Example 2 In a mixed solvent of 8 g of isopropyl alcohol and 72 g of water, a polyurethane emulsion (Superflex E-2000, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) was added as a binder. Organic acid-treated hydrotalcite (obtained by subjecting 10 g of hydrotalcite to 10 mg equivalent of malic acid) was added as an interlayer compound, and the mixture was treated with a bead mill for 8 hours to obtain a dispersion. The obtained dispersion is applied to a 100 μm-thick easily-treated transparent polyester film (D-535, manufactured by ICI) with a wire bar so as to have a dry thickness of 8 μm, and dried at 90 ° C. for 2 minutes. A dye fixing layer was formed.

Next, on the dye fixing layer, a gelatin resin (E-29 manufactured by Miyagi Chemical Industry Co., Ltd.) was used as an ink-absorbing resin.
0) and a mixture of the polyoxyethylene derivative of Table 3 or Table 4 so as to have a dry thickness of 0.8 μm.
By drying under the same conditions, an ink absorbing layer was formed, whereby ink jet recording media of Examples 28 to 46 as shown in FIG. 2 were produced.

The ink jet recording medium of Comparative Example 2 was produced by the same operation as in Examples 28 to 46 except that no polyoxyethylene derivative was used.

(Evaluation) A test pattern image was formed on the obtained ink jet recording medium using an ink jet recording system printer (HP850C, manufactured by Hewlett-Packard Company). The resulting images were tested and evaluated for ink absorbency, ink fixability (water resistance) and bleeding resistance as described below.

The ink droplets ejected from the ink-absorbing ink-jet head were visually observed to see if they were absorbed by the ink-jet recording medium and were evaluated according to the following criteria.

Rank criteria ◎: When the ink has sufficiently penetrated and absorbed ○: When the ink has penetrated and absorbed Δ: The ink has penetrated, but the speed is slower than when evaluated as ○ Case X: When the ink hardly penetrates

The ink- recording medium on which the ink fixability test pattern image was formed was immersed in tap water for 10 minutes, and the blur of the test pattern image was visually observed and evaluated according to the following criteria.

Rank criteria ◎: When the image is not blurred at all ○: When the image is hardly blurred Δ: When the image is slightly blurred, but there is no practical problem ×: The image is blurred If

The ink jet recording medium having the bleeding resistance test pattern image formed thereon was allowed to stand for 24 hours at a temperature of 60 ° C. and a humidity of 85%, and the bleeding of the image was visually observed and evaluated according to the following criteria. did.

Rank Criteria ：: When the image is not blurred at all ○: When the image is hardly blurred Δ: When the image is slightly blurred, but there is no practical problem ×: The image is blurred If

[0062]

[Table 1] Dye fixing layer Ink Ink compound (%) Absorbency Fixing property Bleed resistance Example 1 * 1 (0.05%) △ ○ ○ 2 * 1 (0.1%) ○ ○ ○ 3 * 1 (5%) ◎ ◎ ○ 4 * 1 (50%) ○ ○ ○ 5 * 1 (80%) ○ ○ ○ 6 * 1 (90%) ○ ○ △ 7 * 2 (0.1%) ○ ○ ○ 8 * 2 (20%) ◎ ◎ ○ 9 * 2 (80%) ○ ○ ○ 10 * 2 (85%) ○ ○ △ 11 * 3 (0.05%) △ ○ ○ 12 * 3 (10%) ◎ ◎ ○ 13 * 3 (80%) ○ ○ ○ Table 1 Note (compound (polyoxyethylene derivative)) * 1 Emulgen A-60 * 2 Emulken 903, manufactured by Kao Corporation (polyoxyethylene nonyl phenyl ether) * 3 Emulken 404, manufactured by Kao Corporation (polyoxyethylene) Oleyl ether)

[0063]

[Table 2] Dye fixing layer Ink Ink compound (%) Absorbency Fixing ability Bleed resistance Example 14 * 4 (0.08%) △ ○ ○ 15 * 4 (0.1%) ○ ○ ○ 16 * 4 (40%) ◎ ◎ ○ 17 * 4 (80%) ○ ○ ○ 18 * 4 (82%) ○ ○ △ 19 * 5 (0.07%) △ ○ ○ 20 * 5 (0.1%) ○ ○ ○ 21 * 5 (80%) ○ ○ ○ 22 * 5 (82%) ○ ○ △ 23 * 6 (0.08%) △ ○ ○ 24 * 6 (0.1%) ○ ○ ○ 25 * 6 (30%) ◎ ◎ ○ 26 * 6 (80%) ○ ○ ○ 27 * 6 (81%) ○ ○ △ Comparative example 1 − × × × Table 2 Note (compounds (polyoxyethylene derivatives)) * 4 Leoitol TQ-O106, manufactured by Kao Corporation (polyoxyethylene sorbitan monooleate) * 5 Actinol P-3035, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd. Ethylene oxyperylene block polymer) * 6 Amate 105, manufactured by Kao Corporation (polyoxyethylene alkylamine)

[0064]

[Table 3] Ink absorption layer Ink Ink compound (%) Absorbency Fixing property Bleed resistance Example 28 * 1 (0.08%) △ ○ ○ 29 * 1 (0.1%) ○ ○ ○ 30 * 1 (40%) ◎ ◎ ○ 31 * 2 (0.08%) △ ○ ○ 32 * 2 (0.1%) ○ ○ ○ 33 * 2 (80%) ○ ○ ○ 34 * 2 (85%) ○ ○ △ 35 * 3 (0.1%) ○ ○ ○ 36 * 3 (10%) ◎ ◎ ○ 37 * 4 (0.1%) ○ ○ ○ 38 * 4 (82%) ○ ○ △ Table 3 Note (compound (polyoxyethylene derivative)) * 1 Emulgen A-60 * 2 Emulken 903, manufactured by Kao Corporation (polyoxyethylene nonylphenyl ether) * 3 Emulken 404, manufactured by Kao Corporation (polyoxyethylene) Oleyl ether) * 4 Leotole TQ-O106, manufactured by Kao Corporation (polyoxyethylene sorbitan monooleate)

[0065]

[Table 4] Ink absorption layer Ink Ink compound (%) Absorbency Fixing property Bleed resistance Example 39 * 5 (0.08%) △ ○ ○ 40 * 5 (0.1%) ○ ○ ○ 41 * 5 (10%) ◎ ◎ ○ 42 * 5 (40%) ○ ○ ○ 43 * 5 (0.1%) ○ ○ △ 44 * 6 (30%) ◎ ◎ ○ 45 * 6 (80%) ○ ○ ○ 46 * 6 (85%) ○ ○ ○ Comparative example 2 − × △ × Table 4 Note (Compound (polyoxyethylene derivative)) * 5 Actinol P-3035, manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd. (polyoxyethylene oxyperylene block polymer) * 6 Amate 105, manufactured by Kao Corporation (polyoxyethylene alkyl) Amine)

As can be seen from Tables 1 to 4, the ink jet recording media of Examples 1 to 46 in which the dye fixing layer or the ink absorbing layer contains a polyoxyethylene derivative have ink absorbency and ink fixability ( In terms of (water resistance) and bleeding resistance, the properties were at or above a level at which there is no practical problem.

On the other hand, Comparative Example 1 or Comparative Example 2 in which the dye fixing layer or the ink absorbing layer did not contain a polyoxyethylene derivative was particularly poor in ink absorption and bleeding resistance.

[0068]

The recording medium for ink jet recording of the present invention is excellent in ink absorbency, fixability, water resistance and bleeding resistance, so that a clear image can be maintained.

[Brief description of the drawings]

FIG. 1 is a sectional view of an inkjet recording medium of the present invention.

FIG. 2 is a sectional view of an inkjet recording medium of the present invention.

[Explanation of symbols]

 1: Dye fixing layer, 2: Base material, 3: Ink absorption layer

Claims (18)

[Claims] 1. An ink jet recording medium comprising a substrate and a dye fixing layer comprising a binder and an intercalation compound for receiving and retaining a water-soluble dye by an intercalation reaction. Contains a polyoxyethylene derivative. 2. The polyoxyethylene derivative is a polyoxyethylene alkyl ether, a polyoxyethylene alkylphenol ether, a polyoxyethylene alkylamino ether, a polyoxyethylene sorbitan fatty acid ester, or a polyoxyethylene polypropylene block polymer. Recording medium for inkjet. 3. The polyoxyethylene derivative is added to the dye fixing layer in an amount of 0.1 to 100 parts by weight of a resin component containing a binder.
The inkjet recording medium according to claim 1, wherein the content is 1 to 80 parts by weight. 4. The ink jet recording medium according to claim 1, wherein the interlayer compound is a layered inorganic polymer having exchangeable cations. 5. The recording medium for inkjet according to claim 4, wherein the layered inorganic polymer having exchangeable cations is a montmorillonite group mineral. 6. A montmorillonite group mineral represented by the formula (1): ## STR1 ## (X, Y) _2-3 Z ₄ O ₁₀ (OH) ₂ .mH ₂ O. (W _1/3 ) (1) , X is Al, Fe (III), Mn (III) or Co
(III), Y is Mg, Fe (II), Ni, Zn or Li, Z is Si or Al, W is K, Na
Or Ca, H ₂ O is interlayer water, and m represents a number. 6. The inkjet recording medium according to claim 5, wherein 7. The recording medium for ink jet according to claim 1, wherein the interlayer compound is a layered inorganic polymer having exchangeable anions. 8. The recording medium for inkjet according to claim 7, wherein the layered inorganic polymer having exchangeable anions is a hydrotalcite group mineral. 9. The hydrotalcite group mineral represented by the formula (2) or (3): [MII _1-x MI _x (OH) ₂ ] ^{+ X} [A _{x / n} · mH ₂ O] ^-X ( 2) (wherein MII is a divalent metal ion of Mg, Ni, Ca, M
I represents a trivalent metal ion of Al, A represents an n-valent anion, and x and m are numbers satisfying 0.1 <x <0.4 and 0 <m <2. Embedded image [LiAl ₂ (OH) ₆ ] ⁺¹ [Al _{/ n} · mH ₂ O] ⁻¹ (3) (wherein A represents an n-valent anion, and m is 0 <m <2) The inkjet recording medium according to claim 8, wherein the number satisfies the following. 10. A dye fixing layer comprising a binder and an interlayer compound for receiving and holding a water-soluble dye by an intercalation reaction on a substrate, and at least one layer of an ink-absorbing resin on the dye fixing layer. An ink jet recording medium comprising an absorption layer, wherein the ink absorption layer contains a polyoxyethylene derivative. 11. The polyoxyethylene derivative is a polyoxyethylene alkyl ether, a polyoxyethylene alkylphenol ether, a polyoxyethylene alkylamino ether, a polyoxyethylene sorbitan fatty acid ester, or a polyoxyethylene polypropylene block polymer. Recording medium for inkjet. 12. The ink absorbing layer contains a polyoxyethylene derivative in an amount of 0.1 to 80 parts by weight based on 100 parts by weight of the ink absorbing resin.
The recording medium for inkjet according to the above. 13. The inkjet recording medium according to claim 10, wherein the interlayer compound is a layered inorganic polymer having exchangeable cations. 14. An ink jet recording medium according to claim 13, wherein the layered inorganic polymer having exchangeable cations is a montmorillonite group mineral. 15. A montmorillonite group mineral represented by the formula (1): ## STR4 ## (X, Y) _2-3 Z ₄ O ₁₀ (OH) ₂ .mH ₂ O. (W _1/3 ) (1) , X is Al, Fe (III), Mn (III) or Co
(III), Y is Mg, Fe (II), Ni, Zn or Li, Z is Si or Al, W is K, Na
Or Ca, H ₂ O is interlayer water, and m represents a number. The recording medium for inkjet according to claim 14, which is represented by the following formula: 16. The inkjet recording medium according to claim 10, wherein the interlayer compound is a layered inorganic polymer having exchangeable anions. 17. The recording medium for ink jet recording according to claim 16, wherein the layered inorganic polymer having exchangeable anions is a hydrotalcite group mineral. 18. The hydrotalcite group mineral represented by the formula (2)
Or (3) embedded image [MII _1-x MI _x (OH) ₂ ] ^{+ X} [A _{x / n} · mH ₂ O] ^−X (2) (where MII is Mg, Ni, Ca Valent metal ion, M
I represents a trivalent metal ion of Al, A represents an n-valent anion, and x and m are numbers satisfying 0.1 <x <0.4 and 0 <m <2. Embedded image [LiAl ₂ (OH) ₆ ] ⁺¹ [Al _{/ n} · mH ₂ O] ⁻¹ (3) (where A represents an n-valent anion, and m represents 0 <m <2) The recording medium for inkjet according to claim 17, wherein the number satisfies the following.