JPH10250219A - Ink jet recording sheet for oil-based ink - Google Patents

Abstract

(57) [Summary] An ink jet recording sheet for oil-based ink which can obtain a printed image having a high image density, excellent color-forming properties, and excellent sebum resistance, compared to an oil-based ink using an oil-soluble dye as a coloring material. To get An ink jet recording sheet for oil-based ink, comprising an ink receiving layer comprising a pigment, a dye-dyeing resin and a dye-non-dyeing resin provided on a support. The dye-dyeing resin is a hydrophobic thermoplastic resin having a specific density, further selected from a specific group, and having a specific glass transition temperature or a structure. Sheet. On the other hand, the ink jet recording sheet for oil-based ink, wherein the non-dyeable resin is a hydrophilic thermoplastic resin.

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 for oil-based ink, and more particularly, to a high image density compared to an oil-based ink in which an oil-soluble dye is dissolved or dispersed in an organic solvent as a coloring material. The present invention relates to an ink jet recording sheet for oil-based ink which has excellent coloring properties and good sebum resistance.

[0002]

2. Description of the Related Art Ink jet recording systems are based on various operating principles typified by a deflection system, a cavity system, a thermojet system, a bubble jet system, a thermal inkjet system, a slit jet system and a spark jet system. It is used to record images and characters by flying droplets and attaching them to an ink jet recording sheet such as paper. High speed, low noise, easy multicoloring, great flexibility in recording patterns, development It is advantageous in that it does not require fixing, and is rapidly spreading in various applications as a recording device for various figures including Chinese characters and color images.

Further, an image formed by an ink jet recording method using a multicolor ink containing a coloring material such as yellow, magenta, cyan, and black in a solvent such as water or a hydrophilic solvent is often used in a plate making method. It is possible to obtain a recorded image comparable to color printing. Further, 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 development by silver halide photography.

[0004] The ink used in such an ink jet recording system is prepared by dissolving various water-soluble dyes in an aqueous ink, that is, water or a mixed solvent of water and a hydrophilic solvent.
Most of them contain various additives as necessary. This is because the color tone of the aqueous ink after printing is bright and bright, the contrast of the ink dots is large,
This is because it has advantages in terms of easy adjustment of ink viscosity and safety.

[0005] However, the recent ink jet recording system has a high resolution, especially as an alternative to silver halide photography.
High image density, high storage stability, etc. are required, and various studies have been conducted.However, conventional systems using aqueous inks achieve image densities and image storage stability comparable to silver halide photographs. It was difficult.

This is mainly because a water-soluble dye is selected as a coloring material. Specifically, 1) it is difficult to increase the concentration of the coloring material dissolved in an ink solvent.
2) The reason is that it is difficult to design an aqueous dye capable of achieving both color development of an image and storage stability of the image.

On the other hand, in particular, for the purpose of improving the storage stability of an image, for example, JP-A-57-10660, JP-A-57-10661, and JP-A-4-2344.
Nos. 67, 5-156189, 5-179
Nos. 183, 5-202324, 5-26
Nos. 3029, 5-331313 and 6-1
JP-A Nos. 22846 and 6-13631 propose inks using pigments instead of aqueous dyes.

However, when a pigment is used as a coloring material, it is difficult to increase the dispersion concentration of the pigment in the ink solvent as in the case of the aqueous dye. Is not easy.

Means for solving these problems include:
As a coloring material, for example, disperse dyes, naphthol dyes, vat dyes, oil-soluble dyes such as sulfur dyes, and as an ink solvent, for example, oil-based inks using solvents such as isoparaffins, ethers and plasticizers. It is known to be very effective. For example, Japanese Patent Publication Nos. 7-78187, 7-78188, 8-6057, 8-26259, 6-247034, and 6-306319 have been proposed. Ink corresponds to this.

[0010] Such an oil-based ink can 1) easily dissolve an oil-soluble dye in a solvent at a high concentration, and can realize a high image density comparable to a silver halide photograph. In addition, water resistance is better than that of water-based inks. 3) Compared with water-soluble dyes, not only is there a high degree of freedom in the molecular design of dyes in consideration of light resistance and ozone resistance, but also 4 ) Clogging of the head nozzle is unlikely to occur, and 4) cockling of the inkjet recording sheet does not occur at all.
In fields where high resolution and high image quality are desired, it is promising as a substitute for water-based ink.

[0011] Here, cockling means that hydrogen bonds between natural pulp of high quality paper or coated paper used as a support of an ink jet recording sheet are partially extended by being cut by a solvent (water) of an aqueous ink. Refers to the phenomenon of ripples. Cockling not only reduces the transportability and handleability of the printer, but also requires precise recording such as drawings output by an inkjet recording type plotter, especially when obtaining high quality recorded images in recent years Is not a favorable phenomenon.

On the other hand, an ink jet recording sheet has a high density of print dots, a bright and vivid color tone, a quick ink absorption, and prevents the ink from flowing or bleeding even when the print dots overlap. In order to satisfy various requirements such that the diffusion of dots in the horizontal direction does not become unnecessarily large, the shape of the ink dot is close to a perfect circle, and the periphery is smooth and not blurred, and the whiteness is high, for example, JP-A-57-157786
In Japanese Patent Application Laid-Open Publication No. H11-264, a recording sheet is proposed in which a synthetic amorphous silica or a salt thereof, or a mixture thereof is coated on a paper surface together with a binder resin as necessary, or is filled. JP-A-60-232990 proposes a recording sheet provided with an ink receiving layer containing a porous cationic hydrated aluminum oxide. Further, JP-A-60-204390 and JP-A-2-19.
No. 8889 proposes a recording sheet containing synthetic amorphous silica having a large specific surface area by BET and cationic hydrated aluminum oxide which is a cationic colloid particle.

These proposed ink jet recording sheets are suitably used for aqueous inks in which a water-soluble dye is dissolved at a low concentration in water or a mixed solvent of water and a hydrophilic solvent. Absorbs the solvent immediately,
The main purpose is to fix a trace amount of a water-soluble dye efficiently. Therefore, as the binder resin, for example, a water-soluble resin such as polyvinyl alcohol, polyvinylpyrrolidone, starch or carboxymethylcellulose is often used, and in some cases, ethylene / vinyl acetate copolymer is used for the purpose of improving water resistance. In some cases, such a hydrophobic resin as described above is used. However, such an ink jet recording sheet has been studied so as to be suitable for an aqueous ink, and is not suitable for an oil-based ink using an oil-soluble dye. In a recording sheet coated with a conventionally known ink receiving layer, not only is it difficult to lower the high image density originally possessed by the oil-based ink, it is difficult to obtain vivid color development, but also the When they adhere, there is a problem that the image becomes dull or blurred.

As ink jet recording sheets for oil-based inks, JP-A 64-24785 and JP-A No.
Japanese Patent Application Laid-Open No. 255558/1990 proposes that the oil-based inkjet recording coated sheet described in the publication is substantially the same as a conventionally known inkjet recording sheet, and performs inkjet recording using an oil-based ink. However, satisfactory image density, color development and sebum resistance could not be obtained.

[0015]

Accordingly, an object of the present invention is to provide, as a coloring material, for example, naphthol dye, azo dye, metal complex dye, anthraquinone dye, quinoimine dye, indigo dye, cyanine dye, quinoline dye, nitro dye. Using oil-soluble dyes such as nitroso dyes, benzoquinone dyes, carbonium dyes, naphthoquinone dyes, naphthalimide dyes, phthalocyanine dyes, and perinine dyes, isoparaffins, ethers, and oily solvents used as so-called plasticizers as solvents. An object of the present invention is to provide an ink-jet recording sheet for oil-based ink which absorbs the used oil-based ink satisfactorily, has a high image density, is excellent in color development, and has good sebum resistance.

[0016]

The present inventors have conducted intensive studies on the above-mentioned problems in the ink jet recording sheet for oil-based ink, and as a result, have found that a pigment, a dye-dyeable resin and a dye-nondyeable It has been found that an inkjet recording sheet for oil-based ink coated with an ink-receiving layer made of a resin absorbs the oil-based ink well, has a high image density, and is excellent in color developability. Furthermore, it has been found that dulling and bleeding of an image due to adhesion of sebum, sweat and the like are significantly suppressed by using a dye-dyeing resin and a dye-non-dyeing resin in combination.

Here, as the dye-dyeable resin, in particular,
Hydrophobic thermoplastic resin having a specific density is preferred,
On the other hand, as the non-dyeable resin, a hydrophilic thermoplastic resin is particularly preferable. Basically, the compatibility between the dye-dyeing resin and the dye-non-dyeing resin is poor, and it can be assumed that the ink receiving layer is formed in a state of micro-separation. It is considered that such a resin layer separation structure suppresses dullness or bleeding of an image due to sebum, sweat, and the like.

That is, the ink-jet recording sheet for oil-based ink of the present invention is an oil-based ink-jet recording sheet having an ink-receiving layer provided on at least one surface of a support, wherein the ink-receiving layer comprises a pigment, a density (ρ).
1.1 g · cm ^-3 or more, comprising a hydrophobic thermoplastic dye-dyeing resin and a dye-non-dyeing resin, and the total content of the dye-dyeing resin and the dye-non-dyeing resin is 1 for
An ink-jet recording sheet for oil-based ink, wherein the mixing ratio of the dye-dyeing resin to the dye-non-dyeing resin is 1: 9 to 9: 1.

The dye-dyeable resin is at least one selected from vinyl chloride resins, vinyl acetate resins, polyvinyl acetal resins, polyester resins, polycarbonate resins, alkyd resins and thermoplastic polyurethane resins. With the above resin, a better ink jet recording sheet for oil-based ink can be obtained.

Further, when the dye-dyeing resin is a vinyl chloride resin having a glass transition temperature of 70 ° C. or less, a more excellent ink jet recording sheet for oil-based ink can be obtained.

If the dye-dyeable resin is a vinyl chloride resin obtained by copolymerizing an acrylic or methacrylic monomer having an alcoholic hydroxyl group, a more excellent ink jet recording sheet for oil-based ink can be obtained.

Further, when the non-dyeable resin is a hydrophilic thermoplastic resin, an ink jet recording sheet for oil-based ink having particularly improved sebum resistance can be obtained.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The ink jet recording sheet for oil-based ink of the present invention will be described in detail below. The ink receiving layer of the ink jet recording sheet for oil-based ink in the present invention comprises at least three components of a pigment, a dye-dyeable resin and a dye-nondyeable resin. Here, the dye-dyeable resin is a coloring material in an oil-based ink that can suitably use the ink-jet recording sheet for an oil-based ink of the present invention, that is, for example, a naphthol dye, an azo dye, a metal complex dye, an anthraquinone dye. Resin that dyes (fixes) oil-soluble dyes such as quinoimine dyes, indigo dyes, cyanine dyes, quinoline dyes, nitro dyes, nitroso dyes, benzoquinone dyes, carbonium dyes, naphthoquinone dyes, naphthalimide dyes, phthalocyanine dyes and perinine dyes Means As such a dye-dying resin, a resin exhibiting thermoplasticity is preferable, and particularly, 1) a density of 1.1 g · cm ⁻³ or more and 2) a hydrophobic thermoplastic resin are preferable. Here, the density refers to ASTM
It is measured by a test method specified in D792 or JIS K-7112.

Here, the density of the thermoplastic resin is 1.1 g ·
cm^-3If it is less than 1, the image density is reduced and the color developability is poor.
You. The reason for this is not clear, but generally, the density is 1.1 g.
・ Cm ^-3Less than typical thermoplastic resin is
Pyrene, polyethylene, polyethylene oxide, etc.
Resins can be mentioned, but basically these resins are
Dye dyes on resin due to lack of affinity with oil-soluble dye
Hard to do. Therefore, when inkjet recording,
The soluble dye does not dye the thermoplastic resin and
At the same time, the image density is deeply penetrated into the recording sheet,
It can be inferred that the color developing property deteriorates. In addition, oil-soluble dyes
Oil-soluble in relatively coarse / dense resin
Dye diffuses along with component compounds such as sebum and sweat
It is considered that image bleeding occurs.

Further, even if a thermoplastic resin having a density of 1.1 g · cm ⁻³ or more is used, for example, a hydrophilic resin such as polyvinyl alcohol or polyvinylpyrrolidone tends to cause image density. Basically, it is considered that a thermoplastic resin which is hydrophilic with respect to an oil-soluble dye lacks dyeing properties, so that the image density is lowered.

The thermoplastic resin used in the present invention has an average molecular weight of 2,000 to 1,000,000 in order to enhance the adhesiveness of the pigment and to make the film strength of the ink receiving layer sufficient.
Is suitable.

A dye-dyeable resin that can be suitably used for the ink receiving layer, that is, having a density of 1.1 g · cm
Representative examples of the thermoplastic resin having a hydrophobicity of ^-3 or more are listed below, but the present invention is not limited thereto.

A) Polyvinyl chloride resin or a copolymer with the following copolymer components: saturated fatty acid vinyl esters such as vinyl acetate, vinyl propionate and vinyl butyrate; maleic acid, fumaric acid, itaconic acid and maleic acid Unsaturated carboxylic acids and their alkyl esters such as diethyl acrylate, mono-2-ethylhexyl maleate and di-2-ethylhexyl fumarate; vinyl monomers such as allyl glycidyl ether and glycidyl methacrylate;
Acrylic acid or methacrylic acid such as acrylic acid, methacrylic acid, methyl acrylate, benzyl acrylate, ethyl methacrylate, butyl acrylate, 2-hydroxyethyl methacrylate, benzyl methacrylate, and alkyl esters thereof; Olefins such as ethylene, propylene, isobutylene and cyclopentene; alkyl vinyl ethers such as methyl vinyl ether, isobutyl vinyl ether and lauryl vinyl ether; halogenated olefins such as dichloroethylene and trichloroethylene; vinyl caproate, vinyl peragonate and vinyl laurate; Long-chain alkyl vinyl esters such as vinyl myristate, vinyl palmitate and vinyl stearate; vinyl alcohol, vinylidene chloride, acrylonitrile Lil, etc. meth acrylonitrile.

B) Polyvinyl acetate resin or a copolymer with the following copolymer components: acrylonitrile, acetal, ethylene, vinyl ester of branched fatty acid, styrene, acryl and acrylate, maleate, fumarate, Chloroprene, phenol and the like can be mentioned.

C) Polyvinyl formal resin:

D) Polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol with the following aldehydes or acetals: for example, an alkyl having a C _{1 to} C ₂₀ linear or branched alkyl group Aldehyde or acetal; alkyl aldehyde or acetal having a substituted alkyl group such as chloromethyl group, bromomethyl group, aminomethyl group, 7-carboxyheptyl group or benzyl group; phenyl aldehyde; alkyl group, alkoxy group, amino group on benzene ring Phenylaldehyde or acetal having a substituted phenyl group such as a group, carboxyl group, hydroxy group or halogen atom; alkenyl aldehyde or acetal such as a vinyl group or 2-methylvinyl group; It can be.

E) Polyester resin obtained by the following dehydration condensation reaction of basic acid and glycols: unsaturated 2
Examples of the basic acid include maleic acid, maleic anhydride, fumaric acid, mesaconic acid, citraconic acid, itaconic acid and chlorinated maleic acid. Examples of the saturated dibasic acid include phthalic acid, phthalic anhydride,
Isophthalic acid, tetrahydrophthalic acid, adipic acid, sebacic acid, thiodiglycolic acid, 3,6-endomethylenetetrahydrophthalic anhydride, tetrachlorphthalic anhydride, 3,6-endodichloromethylenetetrachlorophthalic acid, and the like. Can be. As polybasic acids,
For example, pyromeric acid, pyromeric anhydride, trimeric acid and the like can be mentioned. Examples of the glycols include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, bisphenoldiol diisopropyl ether, and neopentyl glycol butenediol.

F) Polycarbonate resin obtained by transesterification of diphenyl carbonate with the following bisphenols: bisphenyls such as 4,4'-dihydroxy-diphenyl-methane;
4,4'-dihydroxy-diphenyl-1,1-ethane, 4,4'-dihydroxy-diphenyl-1,1-n
-Butane, 4,4'-dihydroxy-diphenyl-1,
1-heptane, 4,4'-dihydroxy-diphenyl-
Phenyl-methane, 4,4'-dihydroxy-diphenyl-2,2-propane, 4,4'-dihydroxy-3,
3'-dimethyl-diphenyl-2,2-propane, 4,
4'-dihydroxy-3,3'-dimethylphenyl-diphenyl-2,2-propane, 4,4'-dihydroxy-dichloro-diphenyl-2,2-propane, 4,4'-dihydroxy-diphenyl-2,2- Butane, 4,4'-
Dihydroxy-diphenyl-methyl-isobutyl-methane, 4,4'-dihydroxy-diphenyl-2,2-heptane, 4,4'-dihydroxy-diphenyl-2,2
-Octane, 4,4'-dihydroxy-diphenyl-
3,3-pentane, 4,4'-dihydroxy-diphenyl-4,4-n-heptane, 4,4'-dihydroxy-
Diphenyl-1,1-cyclopentane, 4,4′-dihydroxy-diphenyl-1,1-cyclohexane, 4,
4'-dihydroxy-diphenyl-methyl-phenyl-
Methane, 4,4′-dihydroxy-diphenyl-ethyl-phenyl-methane, 4,4′-dihydroxy-diphenyl-2,2,2-trichloro-1,1-ethane, 4,
4'-dihydroxy-3-methyl-diphenyl-2,2
-Propane, 4,4'-dihydroxy-3,3'-diethyl-diphenyl-2,2-propane, 4,4'-dihydroxy-3,3'-diisopropyl-diphenyl-diphenyl-2,2-propane, , 4'-Dihydroxy-3,3'-tetrachloro-diphenyl-diphenyl-
2,2-propane, 4,4'-dihydroxy-3,3 '
-Dicyclohexyl-diphenyl-diphenyl-2,2
-Propane, 4,4'-dihydroxy-diphenyl-isobutyl-methane and the like.

G) An alkyd resin which is a polycondensate of an aliphatic dibasic acid, an aromatic dibasic acid, a monobasic acid, or an unsaturated fatty acid and a glycol as described below: , Maleic anhydride, maleic acid, fumaric acid,
Citraconic acid, succinic anhydride, succinic acid, itaconic acid,
Glutanic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dimer acid, maleated fatty acid and the like. As the aromatic dibasic acid, for example,
Phthalic anhydride, isophthalic acid, terephthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrabromophthalic anhydride, tetrachlorophthalic anhydride, hymic anhydride, α-teripifine-maleic anhydride adduct, α-ferrandrene- Maleic anhydride adducts, heptonic anhydride and the like can be mentioned. Examples of the glycols include ethylene glycol, diethylene glycol, propylene glycol (1,2), dipropylene glycol, butylene glycol (1,3), butylene glycol (2,3), trimethylene glycol, tetraethylene glycol, and bisphenoldioxy. Ethyl ether, bisphenol dioxypropyl ether, neopentyl glycol butenediol (1,4) and the like can be mentioned. As a monobasic acid, for example, soybean oil, linseed oil,
Tung oil, castor oil, dehydrated castor oil, coconut oil and their fatty acids, acrylic acid, methacrylic acid, stearic acid, oleic acid, linoleic acid, linoleic acid, eleostearic acid, ricinoleic acid, dehydrated ricinoleic acid, synthetic fatty acids , Benzoic acid, p-tert-butylbenzoic acid,
Abietic acid and the like. As unsaturated fatty acids,
For example, oxyacids such as lactic acid, malic acid, tartaric acid, and citric acid can be mentioned.

H) A thermoplastic polyurethane resin obtained by using a bifunctional active hydrogen compound and converting the isocyanate group and the active hydrogen group of the entire reaction system into a linear polymer in an equivalent amount as follows:
Examples of the functional active hydrogen compound include ethylene glycol, propylene glycol, diethylene glycol, butylene glycol, 1,6-hexanediol,
Neopentyl glycol, poly (oxypropylene) glycol, poly (oxypropylene) poly (oxyethylene) glycol, poly (oxybutylene) glycol, poly (oxytetramethylene) glycol, hydroxy-terminated polyester and other dihydroxy group-containing compounds No. As the isocyanate, for example,
2,4-tolylene diisocyanate, 65/35 tolylene diisocyanate, 80/20 tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate,
Dianisidine diisocyanate, triden diisocyanate, hexamethylene diisocyanate, derivatives of hexamethylene diisocyanate, dimeryl diisocyanate, metaxylylene diisocyanate, phenyl isocyanate, parachlorophenyl isocyanate, orthochlorophenylisocyanate, metachlorophenylisocyanate, 3,4-diisocyanate Examples thereof include chlorophenyl isocyanate, 2,5-dichlorophenyl isocyanate, methyl isocyanate, ethyl isocyanate, n-butyl isocyanate, n-propyl isocyanate, octadecyl isocyanate, and 1,5-naphthalenediisocyanate.

I) Cellulosic resins such as ethyl cellulose and cellulose propionate:

J) Nylons:

One of these resins can be used alone, or two or more can be used as a mixture. A commercially available resin can be suitably used as long as it does not impair the present invention. it can.

As the dye-dyeable resin used in the ink jet recording sheet for oil-based ink of the present invention, among the above-mentioned resins, vinyl chloride resins, vinyl acetate resins,
A resin selected from a polyvinyl acetal resin, a polyester resin, a polycarbonate resin, an alkyd resin, and a thermoplastic polyurethane resin is preferable.

Further, among these selected dye-dyeing resins, vinyl chloride resins are preferable, and in particular, 1) resins having a glass transition temperature of 70 ° C. or lower, or 2) acrylic or meta- In the case of a resin obtained by copolymerizing an acrylic monomer, the affinity for an oil-soluble dye is particularly high, so that the image density can be further improved and the color developability can be improved.

Here, when a vinyl chloride resin having a glass transition temperature of 70 ° C. or lower is used, the penetration and fixability of the oil-soluble dye into the resin can be improved. Polyvinyl chloride resin originally has a glass transition temperature of 70 ° C. or higher, but in order to lower the glass transition temperature, it is effective to perform so-called internal plasticization. This can be easily achieved by appropriately forming a copolymer with the monomer.

According to the inventor's intensive studies, it has been found that the presence of hydroxyl groups affects the image density especially in a copolymer of vinyl chloride and an acrylic or methacrylic monomer having an alcoholic hydroxyl group. For example, more preferable results are obtained by using a monomer such as hydroxymethyl (meth) acrylate, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, or hydroxypentyl (meth) acrylate. be able to.

Of course, it is a preferred embodiment that the acrylic or methacrylic monomer having an alcoholic hydroxyl group is copolymerized with vinyl chloride so that the glass transition temperature of the copolymer is 70 ° C. or lower. .

On the other hand, the dye-non-dyeable resin used in the ink receiving layer of the ink jet recording sheet for oil-based ink of the present invention means that the oil-soluble dye is difficult to fix and the resin alone can provide satisfactory image density and color development. Cannot be obtained.

As such a dye non-dyeing resin,
1) Thermoplastic resin having a density of less than 1.1 g · cm ⁻³ (for example, polyethylene resin, polypropylene resin, polyethylene oxide resin, isobutylene / normal butylene copolymer, polyethylene glycol resin, polybutadiene resin, butadiene / acrylonitrile copolymer) , Isoprene resin, isobutylene resin, butadiene / methyl methacrylate copolymer),

2) Hydrophilic thermoplastic resins (eg, polyvinyl alcohol resin, ethylene / vinyl alcohol copolymer, polyvinyl pyrrolidone resin, starch, sodium polyacrylate, maleic anhydride / allyl alcohol copolymer, maleic anhydride / Methallyl alcohol copolymer, maleic anhydride / isobutylene copolymer, etc.).

Among these, it is particularly preferable to use a hydrophilic thermoplastic resin as the non-dyeable resin. The reason for this is not clear, but basically, the hydrophilic thermoplastic resin has poor compatibility with the hydrophobic thermoplastic resin as described above, and forms the ink receiving layer in a micro-separated state. I can guess. It is considered that such a layer separation structure of the resin improves dullness and bleeding of an image particularly caused by component compounds such as sebum and sweat.

Among these hydrophilic thermoplastic resins, polyvinyl alcohol resins and modified polyvinyl alcohol resins such as silanol-modified, ethylene-modified, cation-modified, sulfone-group-modified, and alkyl-group-modified are particularly preferable. In combination, it is considered that the oil-soluble dye inhibits the diffusion transferability. Further, since polyvinyl alcohol resin and modified polyvinyl alcohol resin have an excellent binder effect of a pigment as described later, they can be suitably used from the viewpoint of improving the film strength of the ink receiving layer.

The non-dyeable resin used in the present invention has an average molecular weight of from 2,000 to 1,000,000 in order to enhance the adhesiveness of the pigment and to provide a sufficient film strength of the ink receiving layer.
A range of 00 is preferred.

The pigment for forming the ink receiving layer of the ink jet recording sheet for oil-based ink in the present invention includes:
One or more conventionally known pigments can be used alone or in combination.

The pigments can be roughly classified into inorganic pigments and organic pigments. In particular, the inorganic pigments include, for example, light calcium carbonate, heavy calcium carbonate, kaolin, talc, calcium sulfate, barium sulfate, and barium dioxide. Titanium, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate,
Examples include white pigments such as magnesium silicate, synthetic amorphous silica, aluminum hydroxide, alumina, lithopone, zeolite, hydrohaloysite, magnesium carbonate, and magnesium hydroxide.

Among the above-mentioned inorganic pigments, it is particularly preferable to use synthetic amorphous silica, and the specific surface area by the BET method is more than 20 m ² / g, more preferably 50 to 400.
m ² / g, oil absorption 30 ml / g or more, more preferably 5 ml / g
An inorganic pigment of 0 ml / g or more can be suitably used. By using such an inorganic pigment, high image density and excellent color development can be exhibited without impairing the properties of the thermoplastic resin. Such synthetic amorphous silica is described in, for example, JP-A-57-157786,
As described in JP-A-61-141584, JP-A-61-230979, and JP-A-62-292476, a three-dimensional structure of SiO2 is formed by gelation of silicic acid. Amorphous fine particles, whose typical physical property value range is an average particle diameter of 0.1 μm to 30 μm
μm, Hunter whiteness 90 or more, pore size 10-20
It has about 00 angstroms. Further, the silica may be appropriately surface-modified. Surface modification of silica, for example, using organic silane, organic titanate or the like, or chemically react with silanol groups on the silica surface,
Alternatively, a form in which paraffin wax or glycols are physically attached to the surface may be mentioned.

The ink receiving layer may contain colloidal particles in combination with the above-mentioned inorganic pigment. Here, the colloid particles are colloidal particles that are suspended and dispersed in water to form a colloid.
Nos. 7678, 2-275510 and 3-2
81383, 3-285814, 3-
285815, 4-92183, 4-
Pseudo-boehmite sol proposed in JP-A-267180, JP-A-4-275917, etc .;
Nos. 083, 61-19389, 61-1
Nos. 88183, 63-178074, and colloidal silica as described in JP-A-5-51470, and JP-B-4-19037 and JP-A-62-286787. Such as silica / alumina hybrid sol, smectite clay such as hectite and montmorillonite
-81210), zirconia sol, chromia sol, yttria sol, ceria sol, iron oxide sol, zircon sol, antimony oxide sol, and the like.

On the other hand, white or colorless polymer beads can be suitably used as the organic pigment.
For example, acrylic or methacrylic resin, vinyl chloride resin, vinyl acetate resin, polyester resin,
Styrene / acrylic resin, styrene / butadiene resin, polystyrene / acrylic resin, polystyrene / isoprene resin, methyl methacrylate / butyl methacrylate resin, polycarbonate resin, silicone resin, urea resin, melamine resin, epoxy Resin, phenolic resin, spherical or irregular non-porous or porous beads made of at least one kind of resin such as diallyl phthalate resin and the like. In some cases, three-dimensional crosslinking is performed for the purpose of suppressing seepage.

As the polymer beads as described above, commercially available ones can be suitably used. Representative products are shown below, but the present invention is not limited thereto. For example, SGP-70C, SPG-15CS, SGP-3
G, MP-4009 (all manufactured by Soken Chemical), MB-90
0 porous body (Honen Corporation), Kneepole 3000, Kneepole 4000 (manufactured by Nippon Zeon), Microgel E-5003, S-5003, S
-5004, S-5005 (all made by Nippon Paint),
Technopolymer TP (above, Sekisui Chemical) and the like.

The ink receiving layer in the ink jet recording sheet for oil-based ink of the present invention contains a pigment dispersant, a cationic resin, a dye fixing agent, an antifoaming agent, a foam inhibitor, a release agent, a foaming agent, a penetrating agent, Coloring dyes, coloring pigments, fluorescent whitening agents, ultraviolet absorbers, preservatives, anti-binders, water-proofing agents, wet paper strength agents, rheology modifiers, dry paper strength agents, antioxidants, etc. It is also possible, further, in the ink receiving layer in the ink jet recording sheet for oil-based ink of the present invention, as long as the present invention is not impaired,
A conventionally known binder resin can also be added.

The total content of the dye-dyeable resin and the dye-nondyeable resin in the ink receiving layer is 100 to 3 with respect to the pigment.
00% by weight, more preferably 150 to 200% by weight.
% By weight. If the amount is less than 100% by weight, it is difficult to satisfactorily dye the oil-soluble dye, and the image density, color development and sebum resistance are reduced. Further, in some cases, sufficient coating layer strength and water resistance cannot be obtained. On the other hand, if it exceeds 300% by weight, the ink absorption capacity becomes insufficient, and the ink overflows, which is not preferable.

Further, the mixing ratio of the dye-dying resin to the dye-non-dyeing resin is preferably from 1: 9 to 9: 1. Here, when the mixing ratio of the dye-dyeing resin is less than 1, it is not possible to satisfactorily dye the oil-soluble dye, and the image density, color development and sebum resistance are reduced. On the other hand, if the mixing ratio of the non-dyeable resin is less than 1, sebum resistance cannot be satisfactorily improved.

The support of the ink jet recording sheet for oil-based ink in the present invention includes, for example, a) synthetic resin films such as polyethylene terephthalate, polypropylene, polyethylene, polyester, polycarbonate, norbornene, vinylon, polyvinyl alcohol, and nylon; Translucent synthetic resin films containing a pigment, a foaming agent, etc. and having reduced transparency;

B) Thermoplastic resins such as polyethylene, polypropylene, ethylene / propylene copolymer, ethylene / vinyl acetate copolymer, polystyrene and acrylates and inorganic pigments such as calcium carbonate, talc, silica and calcined clay. Synthetic paper mixed, stretched and laminated;

C) Chemical pulp such as LBKP, NBKP, GP, PGW, RMP, TMP, CTMP, CM
Various types of binders, sizing agents, fixing agents, retention agents, cationizing agents, paper strength agents, etc. are mainly composed of mechanical pulp such as P and CGP, wood pulp such as waste paper pulp such as DIP, and conventionally known pigments as main components. Base papers produced by mixing one or more additives with various devices such as a fourdrinier paper machine, a round paper machine, and a twin wire paper machine;

D) Base paper having a size press with starch, polyvinyl alcohol or the like or base paper provided with an anchor coat layer, or coated paper such as art paper, coated paper or cast coated paper provided with a coat layer thereon Kind;

E) Machine calendar, TG calendar,
Base papers that have been subjected to a smoothing treatment using a calender such as a soft calender; f) Coated paper coated on both sides or one side with high density, low density polyethylene, polypropylene, polyester, etc. Resin coated papers;

G) Alternatively, those having improved adhesion properties such as a corona discharge treatment, a flame treatment, a plasma treatment, and an anchor layer coating treatment on the surface of these supports can be suitably used.

Further, these supports can be subjected to a calendar treatment such as a machine calendar, a super calendar, a gloss calendar, a mat calendar, a friction calendar, a brush calendar, and the like. The support has a basis weight of usually about 50 to 300 g / m ² .

The coating amount of the ink receiving layer is not particularly limited, but is preferably 1 to 50 g / m ² . If the coating amount is less than 1 g / m ^2, it is not preferable because sufficient print density and ink absorbency cannot be obtained, and if the coating amount is more than 50 g / m ² , the curl property of the ink jet recording sheet for oil-based ink is deteriorated. Is not preferred.

As a method for providing the ink receiving layer on the support in the present invention, water, a hydrophilic organic solvent or a mixed solvent thereof, or an organic solvent may be used, for example, a conventionally known air knife coater, curtain coater, or the like. It can be coated on the support by various devices such as lip coater, die coater, blade coater, gate roll coater, bar coater, rod coater, roll coater, bill blade coater, short dwell blade coater, size press, simsizer and the like. .

Here, the ink receiving layer can be applied by applying a certain amount of coating in several times. Here, as a method of applying the ink receiving layer by dividing it into several times, a method of drying and applying each layer and a method of applying a plurality of layers simultaneously by wet-on-wet are mentioned. Can be.

In particular, when a hydrophilic thermoplastic resin is used as the dye-non-dyeable resin, the coating solution for the ink-receiving layer is prepared by dissolving the dye-dyeable resin in an organic solvent, Or a dye non-dyeable resin dissolved in water or a hydrophilic organic solvent or a mixed solvent thereof to disperse the dye-dyeable resin.

After the coating of the ink receiving layer, a smoothing process can be performed using a calender such as a machine calender, a TG calender, a super calender, and a soft calender.

In the ink jet recording sheet for oil-based ink of the present invention, a back coat layer may be provided on the opposite surface of the ink receiving layer with the support interposed therebetween in order to impart curl aptitude. As the pigment of (1), a flat pigment or hydrohaloysite is preferable, and even when a back coat is not provided, curling can be forced by jetting water vapor with a humidifier such as Fludex.

The ink jet recording sheet for oil-based ink of the present invention described in detail above is disclosed in JP-A-64-2478.
No. 5 and Japanese Unexamined Patent Publication No. 1-255580 each have an image density, a coloring property and a sebum resistance which cannot be realized at all.

The ink jet recording sheet for oil-based ink of the present invention realizes excellent image density and excellent color development by using a specific thermoplastic resin in the ink receiving layer. A styrene-butadiene copolymer described in JP-A-64-24785,
Water-based adhesives such as acrylic copolymers and polyvinyl alcohol do not fall under the specific thermoplastic resins of the present invention. The styrene-butadiene copolymer, acrylic-styrene copolymer and acrylic resin described in JP-A-1-255580 also do not apply.

In particular, in Japanese Patent Application Laid-Open No. 1-255580, polyester is described as one of the adhesives used for the coating layer, but the total amount of the adhesive is 50% of the solid content of the coating.
% By weight or less, which is different from the ink jet recording sheet for oil-based ink of the present invention. According to the present inventors' intensive studies, in order to satisfactorily dye the oil-soluble dye, it is necessary to use a larger amount of the total amount of the adhesive, that is, a specific thermoplastic resin. Further, in order to improve sebum resistance, it is important to use a dye-dyeable resin and a dye-nondyeable resin in combination, as described in JP-A-64-24785 and JP-A-1-25.
Nothing is mentioned in 5580.

The oil-based ink in the present invention is a coloring material such as naphthol dye, azo dye, metal complex dye, anthraquinone dye, quinoimine dye, indigo dye, cyanine dye, quinoline dye, nitro dye, nitroso dye, benzoquinone dye. And oil-soluble dyes such as carbonium dyes, naphthoquinone dyes, naphthalimide dyes, phthalocyanine dyes and perinine dyes dissolved or dispersed in an organic solvent.

Particularly, the oil-based ink in the present invention includes, for example, JP-B-7-78187 and JP-B-7-78188.
And Japanese Patent Application Laid-Open Nos. 8-6057 and 8-26259. As the oil-soluble dye dissolved in the oil-based ink, for example, CISolven
t Yellow 1,2,3,4,6,7,8,10,12,13,14,16,18,19,21,25,
25: 1,28,29,30,32,33,34,36,37,38,40,42,43,44,47,48,
55,56,58,60,62,64,65,72,73,77,79,81,82,83,83: 1,85,
88,89,93,94,96,98,103,104,105,107,109,112,114,116,
117,122,123,124,128,129,130,131,133,134,135,138,13
9,140,141,143,146,147,148,149,150,151,152,153,157,
158,159,160: 1,161,162,163,164,165,167,168,169,170,
171,172 etc .; CISolvent Red 1,2,3,4,7,8,13,14,17,
18,19,23,24,25,26,27,29,30,33,35,37,39,41,42,43,4
5,46,47,48,49,49: 1,52,68,69,72,73,74,80,81,82,83,8
3: 1,84,84: 1,89,90,90: 1,91,92,106,109,111,117,118,1
19,122,124,125,127,130,132,135,138,140,143,145,14
6,149,150,151,152,155,160,164,165,166,168,169,172,
175,176,177,179,180,181,182,185,188,189,195,198,20
2,203,204,205,206,207,208,209,210,212,213,214,215,
216,217,218,219,220,221,222,223,224,225,226,227,22
8,229 etc .; CISolvent Blue 2,4,5,7,10,11,12,22,2
5,26,35,36,37,38,43,44,45,48,49,50,51,59,63,64,66,
67,68,70,72,79,81,83,91,94,95,97,98,99,100,102,10
4,105,111,112,116,117,118,122,127,128,129,130,131,
132,133,134 etc .; CISolvent Black 3,5,6,7,8,13,2
2,22: 1,23,26,27,28,29,33,34,35,39,40,41,42,43,45,4
6,47,48,49,50 and the like.

Among these oil-soluble dyes, CISo
lvent Yellow 3,14,16,33,56, CISolvent Red 18,24,2
7,122,135, CISolvent Blue 14,25,35,48,108, CISol
ventBlack 3,7,22,34,50 has high dye fastness,
It can be suitably used.

As the solvent used in the oil-based ink, various solvents are selected so as to conform to the characteristics of the ink ejection head of the ink jet recording apparatus or from the viewpoint of safety. Sometimes used. Representative examples of such solvents include, for example, Pegazol (Mobil Petroleum), Shell S
Petroleum naphtha-based solvents such as BR and Shellsol (manufactured by Shell Petroleum); aromatic petroleum solvents such as Hysozol (manufactured by Nippon Petroleum);
Aliphatic petroleum solvents such as IP solvent (manufactured by Idemitsu Petrochemical); naphthenic petroleum solvents such as ink solvent (manufactured by Mitsubishi Petroleum); aromatics such as mono- or di-substituted alkylnaphthalene, alkyl derivatives of biphenyl, xylylethane, and phenethyl cumene Hydrocarbon solvent; methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-
C1-C4 alkyl alcohols such as butyl alcohol, tert-butyl alcohol and isobutyl alcohol; amides such as dimethylformamide and dimethylacetamide; ketones or ketone alcohols such as acetone and diacetone alcohol; tetrahydrofuran and dioxane Ethers; polyalkylene glycols such as polyethylene glycol and polypropylene glycol; ethylene glycol, propylene glycol, butylene glycol, triethylene glycol,
1,2,6-hexanetriol, thiodiglycol,
Alkylene glycols having 2 to 6 alkylene groups such as hexylene glycol and diethylene glycol; lower alkyl ethers of polyhydric alcohols such as glycerin, ethylene glycol methyl ether, diethylene glycol methyl (or ethyl) ether, and triethylene glycol monomethyl ether; Tributyl phosphate, tri-2-ethylhexyl phosphate, triphenyl phosphate,
Phosphates such as tricresyl phosphate; dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, di-n-octyl phthalate, di-2-ethylhexyl phthalate, diisononyl phthalate, octyl decyl phthalate Phthalic acid esters such as butyl benzyl phthalate; aliphatic monobasic acid esters such as butyl oleate and glycerin monooleate; dibutyl adipate, di-2-ethylhexyl adipate, alkyl adipate 610, azelaic acid Jee
Aliphatic dibasic acid esters such as 2-ethylhexyl, dibutyl sebacate and di-2-ethylhexyl sebacate; oxyacids such as methyl acetyl ricinoleate, butyl acetyl ricinoleate, butyl phthalyl butyl glycolate and acetyl tributyl citrate Esters: Plasticizers such as chlorinated paraffin, chlorinated biphenyl, 2-nitrobiphenyl, dinonylnaphthalene, o- and p-toluenesulfonethylamide, show brain, and methyl abietic acid.

Also, for example, the oil-based ink for so-called hot-melt type ink-jet recording proposed in Japanese Patent Publication Nos. 6-247034 and 6-306319, etc. If it is a recording sheet, suitable inkjet recording can be performed. In the hot-melt type oil-based ink for inkjet recording, the following solvents are generally used.
For example, waxes such as polyethylene wax, ozokerite, ceresin, candelilla wax, rice wax, jojoba solid wax, beeswax, lanolin, whale wax, Fischer-Tropsch wax, carnauba wax, paraffin wax, sasol wax, microcrystalline wax, ester wax, etc. And the like; 1,8-octanediol, 1,10-decanediol, 1,12-
Diols such as dodecanediol; fatty acids such as lauric acid, stearic acid, palmitic acid; lauric amide, stearic amide, oleic amide, erucamide, ricinoleamide, 12-hydroxystearic amide, special fatty acid amide Fatty acid amides such as RCONHR 'or RNHCOR'CO
N-substituted fatty acid amides represented by NHR; alkylolamides; higher alcohols such as cetyl alcohol and stearyl alcohol; aromatic compounds such as aromatic esters and aromatic alcohols; methyl laurate, methyl myristate, and palmitin Monohydric alcohol fatty acid esters such as methyl acrylate, methyl stearate, palm fatty acid methyl, isopropyl myristate, butyl stearate, octadecyl stearate, oleyl oleate;
Polyhydric alcohol fatty acid esters such as glycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, ethylene glycol fatty acid ester, and polyoxyethylene fatty acid ester; epoxy resins; polyamide resins; polyester resins; polyacrylic resins; Resins; polyolefin resins.

In the various oil-based inks described above, for example, polyacrylic acid ester, linseed oil-modified alkyd resin, polystyrene, rosin-based resin, terpene Add polar resins such as phenolic resins and alkylphenol-modified xylene resins, sequestering agents, surface tension regulators, surfactants, viscosity regulators, defoamers, foam inhibitors, release agents, foaming agents, Additives such as an agent, a fluorescent whitening agent, an ultraviolet absorber, a preservative, a water-proofing agent, a rheology modifier and an antioxidant.

In any of the above-described oil-based inks, it is easier to increase the concentration of the coloring material, that is, the oil-soluble dye, as compared with the conventionally known aqueous ink. Although it cannot be said unconditionally, it can be dissolved or dispersed at a concentration several times to several tens times that of the aqueous ink, and good ink ejection head characteristics can be achieved. Accordingly, the amount of protrusion of the ink for obtaining the same image density is smaller for the oil-based ink, which is economical.

The ink jet recording sheet for oil-based ink of the present invention can be suitably used not only in oil-based inks using the above-described oil-soluble dyes but also in conventionally known oil-based pigment inks and water-based pigment inks. .

[0083]

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. Further, “parts” and “%” shown in the examples are parts by weight and% by weight unless otherwise specified.

<Preparation of Ink> The following components were sufficiently mixed and dissolved, and then filtered through a 0.45 μm membrane filter to obtain an oil-based ink.

(Oil-based ink) Oil-soluble dye (C.I. Solvent Blue 25) 6 parts Aliphatic petroleum solvent (IP Solvent 1016, manufactured by Idemitsu Petrochemical) 60 parts

<Evaluation Method> Each of the ink jet recording sheets of the following examples and comparative examples was evaluated by the following method.

(1) Image Density Each solid image was printed on each ink jet recording sheet using a drop-on-demand type ink jet printer. After standing for 24 hours in a room (20 ° C., 65%), the optical density of the solid image area was measured by Macbeth.
It was measured as reflection density by RD-918.

(2) Chromogenicity The solid image printing of each ink jet recording sheet obtained as described above was allowed to stand in a room (20 ° C., 65%) for 24 hours, and then the chromaticity of the solid image portion was visually evaluated. . ◎: Vivid color and very excellent coloring. ：: Color without turbidity and good color developability. Δ: Slight turbidity and poor color developability. ×: Poor color development and severe dullness.

(3) Sebum Resistance Artificial sebum was dropped on a solid image portion of each of the ink jet recording sheets obtained as described above and allowed to stand indoors. One week later, image bleeding was visually evaluated. ：: No bleeding was observed even by observation with an optical microscope, which was good. ：: Very slight bleeding was observed by observation with an optical microscope, but this did not affect the image quality. Δ: Slight bleeding was partially observed with naked eyes. X: The bleeding is severe over the entire image, and deterioration of the image quality is inevitable.

Examples and comparative examples relating to the ink jet recording sheet for oil-based ink of the present invention are shown below.

Example 1 90 parts of LBKP (freeness: 380 mlcsf) and NBKP
(Freeness: 480 mlcsf) Pigment 20 having a ratio of light calcium carbonate / heavy calcium carbonate / talc to 10/10 parts per 100 parts of wood pulp consisting of 10 parts.
Parts, 0.10 part of a commercially available alkyl ketene dimer, 0.03 part of a commercially available cationic acrylamide, 1.0 part of a commercially available cationized starch, and 0.5 part of a sulfuric acid band, and then formed with a fourdrinier paper machine to obtain a basis weight of 90 g. / m ² of support was obtained.

On a support, a coating solution of the ink receiving layer having the following composition was applied by a rod bar so as to have a dry coating amount of 7 g / m ² , dried, and then subjected to a calender treatment.
Thus, an ink jet recording sheet for oil-based ink was obtained. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 10 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 2.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 22.5 parts Water 64.5 parts

Example 2 An ink jet recording sheet for oil-based ink of Example 2 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 2.2 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 23.6 parts Water 67.2 parts

Example 3 An ink jet recording sheet for oil-based ink of Example 3 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts 2.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 22.5 parts Water 70.4 parts

Example 4 An ink jet recording sheet for oil-based ink of Example 4 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 3.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 33.8 parts Water 58.1 parts

Example 5 An ink jet recording sheet for oil-based ink of Example 5 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 6.6 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 18.4 parts Water 68 parts

Example 6 An ink jet recording sheet for oil-based ink was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 10.9 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 13.1 parts Water 69 parts

Example 7 An ink jet recording sheet for oil-based ink of Example 7 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 15.3 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 7.9 parts Water 69.8 parts

Example 8 An ink jet recording sheet for oil-based ink of Example 8 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 19.7 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 2.7 parts Water 70.6 parts

Example 9 An ink jet recording sheet for oil-based ink was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink-receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 10 parts 18.8 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 2.5 parts Water 68.7 parts

Example 10 An ink jet recording sheet for oil-based ink of Example 10 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 3.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 33.8 parts Water 58.1 parts

Example 11 An ink jet recording sheet for oil-based ink of Example 11 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 28.1 parts Non-dyeable resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, made by Kuraray) 15 parts Water 51.9 parts

Example 12 An ink jet recording sheet for oil-based ink of Example 12 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (calcined kaolin: Ansilex, manufactured by Engelhardt Co., Ltd.) 7 parts Adhesive resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, made by Kuraray) 31.5 parts Water 45.2 parts

Example 13 An ink jet recording sheet for oil-based ink of Example 13 was obtained in the same manner as in Example 1 except that the coating liquid for the ink-receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (styrene-based porous polymer base: Knee-hole U3000, 10%, manufactured by Nippon Seon) 40 parts thermoplastic resin (isobutylene / maleic anhydride / styrene ρ = 1.21: manufactured by Idemitsu Petrochemical) 4.2 parts Non-dyeing resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, made by Kuraray) 18 parts Caustic sorter ゛ 1.4 parts Water 36.4 parts

Example 14 An ink jet recording sheet for oil-based ink of Example 14 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeable resin (isobutylene / maleic anhydride / styrene ρ = 1.21: manufactured by Idemitsu Petrochemical) 21 parts Non-dyeing resin (polyethylene ρ = 0.92: FLOWSEN UF15, manufactured by Iron and Steel Chemical Industry) 9 parts Ethyl acetate 20 parts Methyl ethyl ketone 25 parts Carbon tetrachloride 10 parts

Example 15 An ink jet recording sheet for oil-based ink of Example 15 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, Fuji Silysia Chemical) 15 parts Dye-dyeable resin (methyl methacrylate ρ = 1.17: Rohm & Haas) 15 parts Non-dyeing Adhesive resin (Polyethylene ρ = 0.92: Flowsen UF15, manufactured by Iron and Steel Chemical Industry) 15 parts Methyl ethyl ketone 45 parts Carbon tetrachloride 10 parts

Example 16 An ink jet recording sheet for oil-based ink of Example 16 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (acrylic polymer base: M-610, manufactured by Matsumoto Yushi Pharmaceutical) 15 parts Dye-dyeable resin (ethyl cellulose ρ = 1.14: N100G, manufactured by Shin-Etsu Chemical) 11.3 parts Non-dyeing of dye Resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 28.1 parts Ethanol 45.6 parts

Example 17 An ink jet recording sheet for oil-based ink of Example 17 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 14 parts Dye-dyeing resin (vinyl chloride / acrylic ρ = 1.3 Tg = 85 ° C: 607, 50% 12.6 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 5.2 parts Water 68.2 parts

Example 18 An ink jet recording sheet for oil-based ink of Example 18 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeing resin (salt vinegar ρ = 1.28 Tg = 80 ° C: 602, 55%, 9.5 parts Non-dyeable resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, Kuraray) 22.5 parts Water 63 parts

Example 19 An ink jet recording sheet for oil-based ink of Example 19 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeing resin (salt vinegar / maleic acid ρ = 1.35Tg = 74 ° C: VMCH, 7.8 parts Dye non-dyeing resin (polyethylene ρ = 0.92: Flowsen UF15, manufactured by Iron and Steel Chemical Industry) 11.7 parts Methyl ethyl ketone 35.5 parts Toluene 20 parts Carbon tetrachloride 10 parts

Example 20 An ink jet recording sheet for oil-based ink of Example 20 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeing resin (salt vinegar / acrylic acid ρ = 1.29 Tg = 80 ° C: MF, 13.5 parts Non-dyeable resin (Polyethylene ρ = 0.92: Flowsen UF15, manufactured by Iron & Steel Chemical Industry) 9 parts Methyl ethyl ketone 25 parts Toluene 22.5 parts Carbon tetrachloride 10 parts

Example 21 An ink jet recording sheet for oil-based ink of Example 21 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink-receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeable resin (phenyl group-modified phenyl acetal ρ = 1.18: manufactured by Sekisui Chemical) 7.5 parts Non-dyeable resin (isobutylene / normal butylene ρ = 0.91: Idemitsu Petrochemical) 7.5 parts Ethanol 35 parts Toluene 35 parts

Example 22 An ink jet recording sheet for oil-based ink of Example 22 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (Synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeable resin (Futyral ρ = 1.16: Esrec BMS, manufactured by Sekisui Chemical) 7.5 parts Dye Non-dyeing resin (isobutylene / normal butylene ρ = 0.91: Idemitsu Petrochemical) 7.5 parts Ethanol 35 parts Toluene 35 parts

Example 23 An ink jet recording sheet for oil-based ink of Example 23 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeable resin (polycarbonate ρ = 1.21: Norex, manufactured by Mitsubishi Chemical) 11.3 parts Dyeable resin (polyethylene ρ = 0.92: FLOWSEN UF15, manufactured by Iron and Steel Chemical Industry) 11.3 parts Carbon tetrachloride 62.4 parts

Example 24 An ink jet recording sheet for oil-based ink of Example 24 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (Styrene-based porous polymer paste: Knee-hole U3000, 10%, manufactured by Nippon Seon) 40 parts Dye-dyeable resin (Alkyto ρ = 1.15: Harituff L116, 60%, manufactured by Harima Chemicals) ) 5.3 parts Non-dyeable resin (polyethylene glycol: PEG20000, manufactured by Sanyo Chemical Industries) 4.8 parts Water 49.9 parts

Example 25 An ink jet recording sheet for oil-based ink of Example 25 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Thermoplastic resin (thermoplastic urethane ρ = 1.22: Temoshaun, Sumitomo High-Polyurethane) 15 parts Non-dye Dyeable resin (isobutylene / normal butylene ρ = 0.91: manufactured by Idemitsu Petrochemical) 15 parts Methyl isobutyl ketone 35 parts Toluene 20 parts

Example 26 An ink jet recording sheet for oil-based ink of Example 26 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Thermoplastic resin (saturated polyester ρ = 1.2: Baylon 200, manufactured by Toyobo) 15 parts Non-dyeing Functional resin (isobutylene / normal butylene ρ = 0.91: Idemitsu Petrochemical) 15 parts Toluene 25 parts Methyl ethyl ketone 35 parts

Example 27 An ink jet recording sheet for oil-based ink of Example 27 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Thermoplastic resin (hydrochloride acetate ρ = 1.32 Tg = 68 ° C: MPRTS5, manufactured by Nissin Chemical) 13.5 parts Non-dyeable resin (isobutylene / normal butylene ρ = 0.91: manufactured by Idemitsu Petrochemical) 9 parts Methyl isobutyl ketone 32.5 parts Toluene 30 parts

Example 28 An ink jet recording sheet for oil-based ink of Example 28 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeing resin (salt vinegar phenol / vinyl alcohol ρ = 1.28 Tg = 81 ° C: AW850, 38%, UCC) 11.8 parts Non-dyeing resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, Kuraray) 30 parts Water 53.2 parts

Example 29 An ink jet recording sheet for oil-based ink of Example 29 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeing resin (salt vinegar / human peroxyalkyl acrylate ρ = 1.35 Tg = 65 ° C: VAGC 13.5 parts Non-dyeable resin (polyethylene ρ = 0.92: FLOWSEN UF15, manufactured by Iron and Steel Chemical Industry) 9 parts Methyl isobutyl ketone 32.5 parts Toluene 20 parts Carbon tetrachloride 10 parts

Example 30 An ink jet recording sheet for oil-based ink of Example 30 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Silo Hohick, manufactured by Fuji Silysia Chemical) 15 parts Dye-dyeing resin (salt vinegar / human peroxyalkyl acrylate ρ = 1.28 Tg = 70 ° C: TA2 15.8 parts Non-dyeing resin (Polyethylene ρ = 0.92: FLOWSEN UF15, manufactured by Iron and Steel Chemical Industry) 6.8 parts Methyl isobutyl ketone 32.4 parts Toluene 30 parts

Comparative Example 1 An ink jet recording sheet of Comparative Example 1 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 15 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 6.6 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 3.4 parts Water 75 parts

Comparative Example 2 An ink jet recording sheet of Comparative Example 2 was prepared in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 10 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 13.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 6.8 parts Water 70.1 parts

Comparative Example 3 An ink jet recording sheet of Comparative Example 3 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 24.1 parts Non-dyeing resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 12.4 parts Water 58.5 parts

Comparative Example 4 An ink jet recording sheet of Comparative Example 4 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (Synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 4 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 23.3 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 12 parts Water 60.7 parts

Comparative Example 5 An ink jet recording sheet of Comparative Example 5 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Mis-Dukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Non-dyeable resin (NBR ρ = 1.00: Luck Star, 40% manufactured by Dainippon Ink and Chemicals) ) 26.3 parts Water 66.7 parts

Comparative Example 6 An ink jet recording sheet of Comparative Example 6 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 1.1 parts Non-dyeable resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 24.9 parts Water 67 parts

Comparative Example 7 An ink jet recording sheet of Comparative Example 7 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 20.8 parts Non-dyeing resin (NBR ρ = 1.00: Luckstar, 40%, manufactured by Dainippon Ink and Chemicals) 1.3 parts Water 70.9 parts

Comparative Example 8 An ink jet recording sheet of Comparative Example 8 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 7 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 21.9 parts Water 71.1 parts

Comparative Example 9 An ink jet recording sheet of Comparative Example 9 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Mis ゛ Casil P-78D, manufactured by Mizusawa Chemical) 10 parts Non-dyeable resin (NBR ρ = 1.00: Luck Star, 40% manufactured by Dainippon Ink and Chemicals, Inc.) ) 22.5 parts Water 67.5 parts

Comparative Example 10 An ink jet recording sheet of Comparative Example 10 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 10 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 18.8 parts Water 71.2 parts

Comparative Example 11 An ink jet recording sheet of Comparative Example 11 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Mis-Dukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Non-dyeable resin (NBR ρ = 1.00: Luck Star, 40% manufactured by Dainippon Ink and Chemicals, Inc.) ) 41.3 parts Water 53.7 parts

Comparative Example 12 An ink jet recording sheet of Comparative Example 12 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Dye-dyeable resin (polyvinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 34.4 parts Water 60.6 parts

Comparative Example 13 An ink jet recording sheet of Comparative Example 13 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Mis-Dukasil P-78D, manufactured by Mizusawa Chemical) 5 parts Non-dyeable resin (NBR ρ = 1.00: Luck Star, 40% manufactured by Dainippon Ink and Chemicals, Inc.) ) 11.3 parts Non-dyeable resin (PVA ρ = 1.2: PVA117, 10% aqueous solution, Kuraray) 30 parts Water 53.7 parts

Comparative Example 14 An ink jet recording sheet of Comparative Example 14 was obtained in the same manner as in Example 1 except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (baked clay: Ansilex 93, manufactured by Enkelhardt) 16 parts Water ρ = 1.01: JSR0642, 48%, manufactured by Nippon Gosei Co.) 25 parts Water 29 parts

Comparative Example 15 An ink jet recording sheet of Comparative Example 15 was obtained in the same manner as in Example 1 except that the coating composition for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Pigment (synthetic amorphous silica: Misdukasil P-78D, manufactured by Mizusawa Chemical) 16 parts Pigment (calcined clay: Ansilex 93, Enkelhardhard) 4 parts Low-density thermoplastic resin (acrylic) ρ = 1.01: Mojniel 767, 46%, made by Hoechst) 13 parts Water 67 parts

Comparative Example 16 An ink jet recording sheet of Comparative Example 16 was obtained in the same manner as in Example 1, except that the coating liquid for the ink receiving layer was changed to the following composition. <Ink receiving layer coating liquid formulation> Dye-dyeable resin (vinyl chloride ρ = 1.24: Krehalon AO, 48%, manufactured by Kureha Chemical) 31.3 parts Non-dye-dyeable resin (NBR ρ = 1.00: Rackstar, 40%) 37.5 parts Water 31.2 parts

Examples 1 to 30 and Comparative Examples 1 to 1
Tables 1 and 2 summarize the evaluation results of the respective ink jet recording sheets shown in FIG.

[0139]

[Table 1]

[0140]

[Table 2]

(Evaluation) As described above, with the ink jet recording sheet for oil-based ink of the present invention, a high image density and excellent color development of the oil-based ink can be realized, and further, sebum resistance is improved. It will be. In particular, Examples 17-26 are vinyl chloride resin, vinyl acetate resin,
Since the resin was selected from a polyvinyl acetal-based resin, a polyester-based resin, a polycarbonate-based resin, an alkyd-based resin, and a thermoplastic polyurethane-based resin, the image density and the color development were further improved. In Examples 27 to 10, since the glass transition temperature was 70 ° C. or lower or a vinyl chloride resin having an alcoholic hydroxyl group, sebum resistance was further suppressed. Here, Examples 12, 13, 18, 24 and 28 using a hydrophilic thermoplastic resin as the non-dyeable resin show more preferable results than those using other non-dyeable resins. Was.

However, in Comparative Examples 1 to 4, the total content of the dye-dying resin and the non-dye-dyeing resin was not in an appropriate range for the pigment. Since the mixing ratio of the coloring resin and the non-dyeing resin was not within an appropriate range, the image density, the coloring property and the sebum resistance were inferior.
In Comparative Examples 9 to 12, even worse results were obtained because the total content and the mixing ratio of the dye-dyeable resin and the dye-non-dyeable resin were not within appropriate ranges. In Comparative Examples 13 to 15,
Since no dye-dyeable resin was used, all of the image density, color development and sebum resistance were severe. In Comparative Example 16,
Since no pigment was used, absorption of the oil-based ink was extremely difficult, and the evaluation did not endure.

[0143]

In the future, oil-based inks are required to have high resolution, high definition, and high storage stability. For example, oil-based inks will be used not only in substitution of silver halide photography and CAD fields, but also in various needs in ink jet recording. It can be inferred that it will be used in a wide range of fields while answering. However, there has been no ink jet recording sheet for oil-based ink which has a satisfactory performance with respect to oil-based ink. The ink-jet recording sheet for oil-based ink, in which high image density and excellent color developability of the oil-based ink can be satisfactorily obtained, and in which dullness and bleeding of the image by component compounds such as sebum and sweat are improved, as in the present invention, By providing an ink receiving layer comprising a pigment, a dye-dyeing resin and a non-dye-dyeing property on a support.

Claims (5)

[Claims] 1. An oil-based ink-jet recording sheet having an ink-receiving layer provided on at least one side of a support, wherein the ink-receiving layer has a pigment and a density (ρ) of 1.1 g.
-Cm ^-3 or more, composed of hydrophobic thermoplastic dye-dyeable resin, and dye-non-dyeable resin, and the total content of the dye-dyeable resin and the dye-non-dyeable resin is 100 ~
An ink jet recording sheet for oil-based ink, wherein the mixing ratio of the dye-dyeing resin to the dye-non-dyeing resin is from 1: 9 to 9: 1. 2. The dye-dyeing resin is a vinyl chloride resin,
2. The resin according to claim 1, which is at least one resin selected from a vinyl acetate resin, a polyvinyl acetal resin, a polyester resin, a polycarbonate resin, an alkyd resin, and a thermoplastic polyurethane resin. Ink jet recording sheet for oil-based ink. 3. The dye-dyeable resin has a glass transition temperature of 70.
3. The ink-jet recording sheet for oil-based ink according to claim 2, wherein the ink-jet recording sheet is a vinyl chloride resin having a temperature of not more than ℃. 4. The ink-jet recording sheet for oil-based ink according to claim 2, wherein the dye-dyeable resin is a vinyl chloride resin obtained by copolymerizing an acrylic or methacrylic monomer having an alcoholic hydroxyl group. 5. The ink jet recording sheet for oil-based ink according to claim 1, wherein the non-dyeable resin is a hydrophilic thermoplastic resin.