JPH10287038A - Production of material to be recorded by ink-jet recording - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a material to be recorded by ink-jet recording which has a glossy surface and high ink absorption speed. SOLUTION: An ink absorption layer is formed of a porous layer and a gloss generation layer. The porous layer is formed on a supporting body and the gloss generation layer is formed on a separation material. After the gloss generation layer is transferred to the supporting body at the side of the porous layer, the separation material is separated from the gloss generation layer, whereby the gloss generation layer is layered. The 0.1-5g/m<2> gloss generation layer containing metallic oxide fine particles of 300 nm or smaller average particle size is formed on the separation material. An intermediate layer is provided between the porous layer and gloss generation layer. The intermediate layer is formed on the gloss generation layer, and both the intermediate layer and the gloss generation layer are transferred at the same time to the supporting body at the side of the porous layer. Alternatively, the intermediate layer is formed on the porous layer and the gloss generation layer is transferred onto the intermediate layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a recording material used for a printer or a plotter using an ink jet recording method, and more particularly to a method for producing an ink jet recording material having a glossy surface. It is.

[0002]

2. Description of the Related Art In recent years, remarkable progress in ink jet printers and plotters has made it possible to easily obtain full-color and high-definition images. Along with this, development of a recording material for inkjet other than conventional high-quality paper and coated paper for inkjet recording has been eagerly desired.

In the ink jet recording system, fine droplets of ink are made to fly by various operating principles and adhere to a recording material such as paper to record images and characters. Inkjet printers and plotters have the features of being excellent in high-speed printing and low noise, having great flexibility in recording patterns, and requiring no development-fixing, and are capable of forming complex images accurately and quickly. It is attracting attention. In particular, as an apparatus for creating a hard copy of image information such as characters and various figures created by a computer, it is rapidly spreading in recent years in various applications. Also, by using a plurality of ink nozzles, it is easy to perform multicolor recording. The color image formed by the multi-color ink jet method can obtain a record comparable to the multi-color printing by the plate making method and the printing by the color photographic method, and in applications where the number of copies is small, It is being widely applied because it is less expensive than printing and photographic techniques.

In recent years, ink jet printers and the like which can output a high-definition image comparable to a silver halide photograph image have been commercially available at low cost. Inkjet recording materials are very inexpensive, while still providing the same quality images as silver halide photographic methods, so users who frequently change display images on signboards or product samples that require large area images Has significant economic benefits for In addition, it is impossible to create an image on a computer and correct the color scheme and layout while looking at the printout, but with the conventional silver halide photographic method it was impossible, but with ink jet recording it is easy to do such an operation There are advantages.

[0005] As fields of application of ink jet printers and plotters, attention has recently been paid particularly to the production of color printing plates in the printing field where image quality close to a photograph is required and the output of design images in the design department. Full-color image recording.

[0006] With the above-mentioned demands from the field of application of ink-jet printers and plotters and the spread of ink-jet printers and plotters, demands for recording materials have diversified. There is a demand for a recording material having good appearance aptitude.

As a recording material for an ink jet having a glossy surface, Japanese Patent Application Laid-Open No. 6-320857 discloses a cast coated paper obtained by performing a cast finish while the coating layer is in a wet state.
Although the surface gloss is extremely low as compared with silver halide photographs, the texture of silver halide photographs cannot be obtained.

As an ink-jet recording material having a high ink absorption speed and an improved glossiness, an ink-jet recording material using alumina hydrate has been proposed in recent years. For example, JP-A-60-232990 No. 60-2
45588, JP-B-3-24906, JP-A-2-276670, JP-A-3-215082, 4-
No. 37576, No. 4-67986, No. 5-16517
Nos. 5-24335, 5-32037, 5-
Nos. 50739, 5-286228 and 5-3014
Nos. 41, 6-48016, 6-55829, 6-183126, 6-184954, and 6-1
Nos. 99034, 6-199035, 6-2183
No. 24, No. 6-255235, No. 6-262844,
6-270530, 6-286297, 6-
297831, 6-297832, 6-316
No. 145, No. 7-68919, No. 7-68920,
7-76161, 7-76162, 7-82
As described in JP-A Nos. 694 and 7-89221, an ink-jet recording material is disclosed in which fine alumina sol (pseudo boehmite) is coated on a support surface together with a water-soluble binder. However, an ink absorbing layer made of alumina hydrate is disclosed in Japanese Patent Application Laid-Open No. H5-24335.
As described in the official gazette, the coating amount is 20 g / m ^2.
If not, the ink absorption capacity is not enough.
Thick film application is required.

On the other hand, as a recording material for ink jet recording with improved glossiness, a recording material in which an ink absorbing layer made of a resin is provided on a support has been proposed. Examples of resins used in such applications include, for example, JP-A-57-38185.
No. 62-184879, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, JP-A-60-168651 and JP-A-60-17.
No. 1143, a resin composition mainly containing polyvinyl alcohol as described in JP-A-61-134290,
Copolymers of vinyl alcohol and olefin or styrene and maleic anhydride described in JP-A-60-234879, crosslinked products of polyethylene oxide and isocyanate described in JP-A-61-74879,
JP-A-61-181679, a mixture of carboxymethylcellulose and polyethylene oxide, JP-A-61-132377, a polymer obtained by grafting methacrylamide to polyvinyl alcohol, JP-A-62-220383. Acrylic polymer having a carboxyl group shown in
No. 214382, polyvinyl acetal-based polymers disclosed in JP-A Nos. 4-282282 and 4-285.
Various ink-absorbing polymers such as a crosslinkable acrylic polymer as described in JP-A-650-650 have been proposed.
Also, JP-A-4-282282, JP-A-4-28
No. 5650 and the like propose a recording material in which a polymer matrix composed of a crosslinkable polymer and an absorbent polymer are mixed, but an ink absorbing layer composed of a resin has an ink composed of fine pigment particles such as silica. It has the disadvantage that the absorption rate is slower than the absorption layer.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a recording material used for a printer or a plotter utilizing an ink jet recording system, and particularly to a method of recording an ink jet recording material having a glossy surface. It is to provide a method for manufacturing a material.

More specifically, it is an object of the present invention to provide a method of manufacturing an ink jet recording material having a glossy surface and a high ink absorption speed.

[0012]

The object of the present invention has been attained by the following means. That is, in the method for producing an ink jet recording material having an ink absorbing layer provided on a support, the ink absorbing layer is an ink absorbing layer in which a porous layer and a glossy layer are laminated, and the porous layer is formed on the support. After forming the glossy layer on the release material and transferring the glossy layer to the porous layer side on the support, the release material is peeled off from the glossy layer. The problem could be solved by laminating the glossy layer on the support.

The gloss-developing layer preferably contains metal oxide fine particles having an average particle diameter of 300 nm or less from the viewpoint of not impairing the ink absorption rate and facilitating the release from the release material. It is preferable that the glossy layer has an amount of 0.1 g / m ² or more and 5 g / m ² or less.

On the other hand, by providing an intermediate layer between the porous layer and the glossy layer, lamination of the porous layer and the glossy layer becomes easy.

As a method of laminating the intermediate layer, after forming the glossy layer on the release material, the intermediate layer is formed on the glossy layer, and the intermediate layer and the glossy layer are simultaneously formed on the support. After transferring to the porous layer side or forming a porous layer on the support, the intermediate layer can be formed on the porous layer, and the glossy layer can be transferred onto the intermediate layer.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Various materials can be used as a release material as long as it is a flat surface having a release function.

For example, examples of the film or sheet material include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, and the like.
Polyamides such as nylon, polyimides, chlorine-based resins such as polyvinyl chloride and polyvinylidene chloride, polystyrenes such as polystyrene and derivatives thereof, and polycarbonates can be used. A roll having a metal mirror surface or the like can also be used. Furthermore, a material whose surface has been treated with a silicone-based or fluorine-based release agent can be used if necessary.

The glossy layer may be composed mainly of a resin, or may contain a pigment together with the resin.

Examples of the resin contained in the glossy layer include starch derivatives such as oxidized starch, etherified starch and phosphate esterified starch, cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose, casein, gelatin, soy protein, Polyvinyl alcohol or derivatives thereof, polyvinyl alcohol of various saponification degrees or silanol modified products thereof, carboxylated products, various derivatives such as cationized products, polyvinyl pyrrolidone, maleic anhydride resin, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer Such as conjugated diene copolymer latex, acrylic polymer latex such as acrylate or methacrylate polymer or copolymer, and vinyl polymer latex such as ethylene-vinyl acetate copolymer Or, a functional group-modified polymer latex by a functional group-containing monomer such as a carboxy group of these various polymers, melamine resin, an aqueous adhesive such as a thermosetting synthetic resin such as a urea resin, and the like, The present invention is not limited to these.

Further, depending on the type of the release material, it may be preferable to form the glossy layer after applying it on the release material using an organic solvent. When an organic solvent is used, it is necessary to use a resin soluble in the organic solvent.

The resin used varies depending on the type of the organic solvent. For example, chlorinated vinyls such as vinyl chloride and vinylidene chloride; styrenes such as styrene and p-methylstyrene; vinyl esters such as vinyl acetate and vinyl butyrate;
Methyl (meth) acrylate, (meth) acrylic acid-2-
Homopolymers having (meth) acrylic acid esters such as ethylhexyl, vinyl ethers such as vinyl methyl ether, unsaturated carboxylic acids such as (meth) acrylic acid and maleic acid (anhydride) as structural units, or copolymers thereof. Combination etc. can be used as appropriate, especially acrylic acid ester such as polymethyl methacrylate, polymer or copolymer resin of methacrylic acid ester, polyurethane resin, unsaturated polyester resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, alkyd A synthetic resin adhesive such as a resin is preferable.

A pigment can be contained in the gloss developing layer. However, if the amount of the pigment having a large particle diameter is too large, the gloss is remarkably reduced. Therefore, the amount of the pigment is preferably small. Examples of pigments that can be contained in the glossy layer include light calcium carbonate, heavy calcium carbonate, magnesium carbonate, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, and silicate. Aluminum, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, alumina hydrates such as alumina and boehmite, aluminum hydroxide, lithopone, zeolite, hydrohaloisite, inorganic pigments such as magnesium hydroxide, styrene-based plastic pigments And organic pigments such as acrylic plastic pigment, polyethylene, microcapsules, urea resin and melamine resin, but the present invention is not limited to these.

The pigment has an average particle diameter of 300 nm.
When the following fine particles are used, the decrease in gloss is small even when the fine particles are contained in the gloss-developing layer. As a method for measuring the average particle diameter of the fine particles, it is general to measure the average particle diameter in the dispersion by a dynamic scattering method.

As such fine particles, metal oxides are preferred because of a particularly small reduction in gloss and easy release of the glossy layer from the release material. Particularly preferred are silica and alumina hydrate (pseudo boehmite, etc.). Particularly, composite fine particles of silica and alumina hydrate are particularly preferable because they do not inhibit the absorption of the ink.

When the glossy layer is too thin, not only is the gloss not sufficiently developed, but also it is difficult to peel off from the release material, and when it is too thick, ink absorption may be impaired.
It is preferably from 1 g / m ^{2 to} 5 g / m ² .

When a pigment is contained in the glossy layer, the proportion of the resin serving as the binder is usually 5 to 70 parts by weight, preferably 5 to 50 parts by weight, based on 100 parts by weight of the pigment. If the ratio of the resin to 100 parts by weight of the pigment is less than 5 parts by weight, the coating film strength of the glossy layer may be insufficient. On the other hand, if the above mixing ratio is more than 70 parts by weight, the ink absorbency may be reduced and good image quality may not be obtained.

The glossy layer may contain an electron beam curable resin, a photocurable resin, a thermosetting resin, a cross-linking agent, or the like, if necessary, and be made insoluble in water to impart water resistance. .

The coating of the gloss-developing layer is performed by using various devices such as a blade coater, a roll coater, an air knife coater, a bar coater, a rod blade coater, a curtain coater, and a short dwell coater on-machine or off-machine. Can do it.

The porous layer formed on the support of the present invention is composed of a coating composition containing a pigment and a binder as main components, and at least one layer is provided on the support.

The pigment is not particularly limited as long as it is used for a usual recording material for ink jet printing, but a white pigment is preferable. For example, light calcium carbonate, heavy calcium carbonate, magnesium carbonate , Kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica, alumina, boehmite Alumina hydrate, aluminum hydroxide, lithopone, zeolite, hydrohaloysite, inorganic pigments such as magnesium hydroxide, styrene plastic pigment, acrylic plastic pigment, polyethylene, microcapsules, urea resin, etc.
Organic pigments such as melamine resin may be mentioned, but the present invention is not limited to these.

The binder is not particularly limited as long as it is used for a usual recording material for ink-jet recording. For example, oxidized starch, etherified starch,
Starch derivatives such as phosphated starch, cellulose derivatives such as carboxymethylcellulose and hydroxyethylcellulose, casein, gelatin, soybean protein, polyvinyl alcohol or derivatives thereof, polyvinyl alcohol of various saponification degrees or silanol modified products thereof, carboxylated products, cationized products Various derivatives such as polyvinylpyrrolidone, maleic anhydride resin, styrene-butadiene copolymer, conjugated diene-based copolymer latex such as methyl methacrylate-butadiene copolymer, and polymers or copolymers of acrylate and methacrylate. Acrylic polymer latex such as coalescence, vinyl polymer latex such as ethylene-vinyl acetate copolymer, or functional group-modified polymerization of these various polymers with functional group-containing monomers such as carboxy groups Aqueous adhesives such as latex, melamine resin, thermosetting synthetic resin such as urea resin, acrylic acid ester such as polymethyl methacrylate, polymer or copolymer resin of methacrylic acid ester, polyurethane resin, unsaturated polyester resin, chloride Synthetic resin-based adhesives such as vinyl-vinyl acetate copolymer, polyvinyl butyral, and alkyd resin can be exemplified, but the present invention is not limited to these.

The ratio of the pigment and the binder in the coating composition constituting the porous layer is based on 100 parts by weight of the pigment.
The binder is used in an amount of 3 to 70 parts by weight, preferably 5 to 50 parts by weight. If the blending ratio of the binder to 100 parts by weight of the pigment is less than 3 parts by weight, the strength of the coating film may be insufficient. On the other hand, if this ratio exceeds 70 parts by weight, the ink absorbency may decrease.

The coating amount of the porous layer varies depending on the required gloss, ink absorptivity, type of the support, and the like.
g / m ² or more. Further, the porous layer may be provided by applying a certain amount of coating twice. When the coating is performed twice, the gloss is improved as compared with the case where the same coating amount is applied once.

For the porous coating, various devices such as a blade coater, a roll coater, an air knife coater, a bar coater, a rod blade coater, a curtain coater, a short dwell coater, and a size press are used on-machine or off-machine. You can do it.
After the porous layer is applied, the porous layer may be flattened using a calender such as a machine calender, a TG calender, or a soft calender.

The number of layers of the porous layer can be appropriately determined as needed, and the pigments and binders used for each layer may be different, and the pore volume differs for each layer. Is also good.

Further, by providing an intermediate layer between the porous layer and the glossy layer, the adhesion between the porous layer and the glossy layer becomes easy.

As the intermediate layer, one having an adhesive force for adhering the glossy layer and the porous layer is preferable, and it is preferable that the intermediate layer contains a resin.

As the resin used for the intermediate layer, it is preferable to use a water-soluble resin or latex among the resins used for the glossy layer and the porous layer. Further, in order to laminate the glossy layer and the porous layer without impairing the ink absorption, a pigment used in the porous layer may be contained.

As the intermediate layer, adhesive, thermosetting,
Those having properties such as thermal adhesiveness, photocurability, and electron beam curability are preferable.

The coating of the intermediate layer is performed by using various devices such as a blade coater, a roll coater, an air knife coater, a bar coater, a rod blade coater, a curtain coater, a short dwell coater, and a size press on or off machine. You can do it.

As a method of laminating the intermediate layer, after forming the glossy layer on the release material, the intermediate layer is formed on the glossy layer, and the intermediate layer and the glossy layer are simultaneously formed on the support. After transferring to the porous layer side or forming a porous layer on the support, the intermediate layer can be formed on the porous layer, and the glossy layer can be transferred onto the intermediate layer.

For example, when the glossy layer is particularly thin,
Since the strength of the gloss developing layer is low, the gloss developing layer is easily broken in the step of peeling the release material from the gloss developing layer. However, after the glossy layer is formed on the release material, the intermediate layer is formed on the glossy layer, and the intermediate layer and the glossy layer are simultaneously transferred to the porous layer side of the support. In the step of peeling the glossy layer from the glossy layer.

On the other hand, when the intermediate layer is formed on the glossy layer, the glossy layer may be eroded by the solvent used for the intermediate layer, and the surface quality may be degraded. In such a case, after forming a porous layer on the support, an intermediate layer is formed on the porous layer,
It is preferable to transfer the glossy layer onto the intermediate layer.

The layers constituting the ink absorbing layer of the present invention, that is, the gloss-developing layer, the porous layer, and the intermediate layer include, for example, a dye fixing agent, a pigment dispersant, a thickener, a flow improver, and a defoamer. , Foam inhibitors, release agents, foaming agents, penetrants, coloring dyes, coloring pigments, fluorescent brighteners, ultraviolet absorbers, antioxidants, preservatives, antibacterial agents, water resistance agents, wet paper strength And various additives such as a dry paper strength agent can be appropriately compounded.

In particular, a secondary amine which forms an insoluble salt with a sulfonic acid group, a carboxyl group, an amino group or the like in a water-soluble direct dye or a water-soluble acidic dye which is a dye component of an aqueous ink,
When a cationic dye fixing agent composed of a quaternary amine and a quaternary ammonium salt is blended, the dye is trapped in the ink absorbing layer, so that the color is improved and an insoluble salt is formed, whereby water is removed. Inflow or bleeding of ink at the time of dropping or moisture absorption is suppressed.

In the case of producing a recording material for ink-jet recording in the present invention, good coatability can be obtained in many cases without adding a surfactant, but in order to further improve coatability, or For the purpose of adjusting the dot diameter when the ink adheres to the ink absorbing layer, a surfactant can be added. The surfactant used may be any of anionic, cationic, nonionic and betaine types, and may be of low molecular weight or high molecular weight. One or more surfactants may be used in combination. The surfactant is added in an amount of 0.1 to 100 parts by weight of the total solid content of the ink absorbing layer.
001 to 5 parts by weight, more preferably 0.01 to 5 parts by weight.
３3 parts by weight.

In order to improve the resolution of an image,
By including a fluororesin-based, silicone-resin-based or alkylketene-dimer-based water repellent or sizing agent in the ink absorbing layer, the print dot diameter can be controlled to improve the image resolution. As these fluorine resin-based, silicone resin-based or alkyl ketene dimer-based water repellents or sizing agents, commercially available ones can be used. Either of these solutions or aqueous emulsions can be used.
The print dot diameter can be controlled by the amount of these water repellents added to the ink absorbing layer. The addition amount varies depending on each component, concentration and desired print dot diameter, but is usually 0.05 to 10 parts by weight, particularly preferably 0.1 to 10 parts by weight, based on 100 parts by weight of the total solid content of the ink absorbing layer as an effective solid component. -5 parts by weight.

In the present invention, when a recording material for ink-jet recording is produced, as a support to be used, for example, paper, polyester film, resin-coated paper, etc. are mainly used. The support is not particularly limited as long as it is a support on which an ink absorbing layer such as a vapor-deposited paper or a vapor-deposited film can be provided.

The ink absorbing layer is provided on at least one side of the support.
It may be provided on both sides of the support, and various back coat layers can be applied for antistatic property, transport property, curl preventing property, writing property, gluing property and the like. An inorganic antistatic agent, an organic antistatic agent, a hydrophilic binder, a latex, a cross-linking agent, a pigment, a lubricant, a surfactant and the like can be added to the back coat layer in an appropriate combination.

When paper is used as the support for use in the present invention, the basis weight does not need to be particularly limited.
Those having a size of about m ² are preferred.

When paper is used as the support in the present invention, for example, chemical pulp such as LBKP or NBKP,
GP, PGW, RMP, TMP, CTMP, CMP, C
A wood pulp such as mechanical pulp such as GP, a waste paper pulp such as DIP, and a pigment as main components, a binder, and various additives such as a sizing agent, a fixing agent, a retention improver, a cationizing agent, and a paper strength enhancer. , A base press manufactured using various devices such as a fourdrinier paper machine, a round paper machine, a twin wire paper machine, and a size press or an anchor coat layer using starch, polyvinyl alcohol, or the like. Base paper provided with, or art paper, coated paper provided with a coat layer on these size presses and anchor coat layers,
Coated paper such as cast-coated paper can be used.

These base papers or coated papers may be used as they are.
The apparatus may be used in a state where flattening is controlled by performing calendar processing using a device such as a G calendar or a soft calendar.

When a polyester film is used as the support for use in the present invention, the thickness thereof is not particularly limited, but is preferably about 10 to 200 μm from the viewpoint of handling properties and printer paper-passing suitability.

In the present invention, the polyester film refers to an aromatic dicarboxylic acid such as terephthalic acid, isophthalic acid or naphthalenedicarboxylic acid or an ester thereof, and a polyester film such as ethylene glycol, diethylene glycol, 1,4-butanediol or neopentyl glycol. Polyester obtained by polycondensation with a polyhydric alcohol is a film, usually roll stretching, tenter stretching,
In many cases, orientation processing is performed by processing such as inflation stretching.

Specific examples of the polyester include polyethylene terephthalate, polyethylene butylene terephthalate, polyethylene-2,6-naphthalate and copolymers thereof with other components, but the present invention is not limited to these. .

When a white polyester film is used as a support, inorganic fine particles such as barium sulfate, titanium dioxide, calcium carbonate, silicon dioxide, aluminum oxide, kaolin, and talc may be used to increase the whiteness of the polyester film. There are a method of containing the polyester film inside the polyester film and a method of applying a white paint to the surface.

In order to provide cushioning and concealing properties, a void-containing film containing a large number of voids inside the film, for example, a foamed polyester film can also be used.

When a resin-coated paper is used as the support for use in the present invention, the thickness does not need to be particularly limited.
Those having a thickness of about 0 to 300 μm are preferred. Further, in order to obtain the texture of a photographic paper, it is preferably about 200 to 300 μm.

The base paper for the resin-coated paper is not particularly limited.
Generally used paper can be used, but preferably,
For example, a smooth base paper as used for a photographic support is preferable. As the pulp constituting the base paper, a natural pulp, a recycled pulp, a synthetic pulp, or the like is used alone or in combination of two or more. The base paper is blended with additives generally used in papermaking, such as a sizing agent, a paper strength enhancer, a filler, an antistatic agent, a fluorescent whitening agent, and a dye. Furthermore,
Surface sizing agent, surface paper strength agent, optical brightener, antistatic agent,
A dye, an anchoring agent or the like may be applied on the surface.

As a coating resin for the resin-coated paper, a polyolefin resin is preferable, and a polyethylene resin is particularly preferable. Further, low density polyethylene, medium density polyethylene, high density polyethylene or a mixture thereof can be used.

On the other hand, the resin layer of the resin-coated paper can be formed by coating a latex having a film forming ability. For example, it can be formed by coating a latex having a low minimum film formation temperature (MFT) on a base paper for resin-coated paper and then heating the latex to a temperature not lower than the minimum film formation temperature.

The thickness of the coating resin layer of the resin-coated paper is not particularly limited, but it is generally coated to a thickness of 5 to 50 μm on the surface only or on both the front and back surfaces.

The resin of the resin-coated paper contains titanium dioxide,
White pigments such as zinc oxide, talc, calcium carbonate, etc., fatty acid amides such as stearamide, arachidic amide, fatty acid metal salts such as zinc stearate, calcium stearate, aluminum stearate, magnesium stearate, cobalt blue, ultramarine, Cecilia Blue, pigments and dyes such as phthalocyanine blue, cobalt violet, fast violet, magenta pigments and dyes such as manganese violet, fluorescent whitening agents, and various additives such as ultraviolet absorbers can be appropriately combined and added. .

[0064]

EXAMPLES The present invention will be described below in detail with reference to examples, but the contents of the present invention are not limited to the examples.
In addition, "parts" means parts by weight.

Example 1 (Preparation of Support) LBKP (Freeness 400 mlcsf)
The ratio of light calcium carbonate, heavy calcium carbonate and talc to 10/10 parts of wood pulp consisting of 80 parts and 20 parts of NBKP (freeness 400 mlcsf) is 10/10.
/ 10 pigment, commercial alkyl ketene dimer 0.
10 parts, commercial cationic acrylamide resin 0.03
Parts, 0.80 parts of commercially available cationized starch, 0.4 parts of sulfate band
0 parts were blended to prepare a mixture, and using a fourdrinier paper machine, a base paper having a basis weight of 90 g / m ² was prepared as a support.

(Formation of Porous Layer) A synthetic amorphous silica (Mizukasil P75D, manufactured by Mizusawa Chemical Industries)
00 parts, polyvinyl alcohol (PVA117, manufactured by Kuraray Co., Ltd.) 25 parts, colloidal silica (Snowtex-
O, manufactured by Nissan Chemical Industries, Ltd.) and a coating solution having a composition of 30 parts of a cationic dye fixing agent (Polyix 601; manufactured by Showa Polymer Co., Ltd.) having a solid content of 16% was prepared. And dried so as to have a dry coating amount of 12 g / m ² to form a porous layer on the support.

(Formation of Gloss Development Layer) The average particle diameter is 100
nm fine silica particles (PST-1, manufactured by Nissan Chemical Industries) 1
00 parts, silanol-modified polyvinyl alcohol (R11
30, Kuraray Co., Ltd.) 20 parts of a coating solution having a solid content of 10
%, And using a polyester film (OLY-100, manufactured by Teijin) as a release material, applying and drying the release material with a roll coater to a dry coating amount of 1.5 g / m ² . A glossy layer was formed.

(Transfer of Gloss Development Layer) 8 parts of ion-exchanged water,
1 g of a mixed solution consisting of 2 parts of isopropyl alcohol is applied to the glossy layer formed on the release material by a gravure coater.
/ M ^{2, and the} coated surface was immediately bonded to the porous layer formed by the above method at a press nip pressure of 100 kg / cm ² . Using a winder, peel the peeling material so that the peeling angle (the peeling material, the peeling point, and the angle of the support) is 40 degrees, transfer and laminate the glossy layer on the porous layer, and record for inkjet. Materials were produced.

Example 2 An ink jet recording material was produced in the same manner as in Example 1 except that the transfer of the glossy layer in Example 1 was carried out by the following method.

(Transfer of Gloss Development Layer, Lamination by Intermediate Layer) 2 parts of polyvinyl alcohol (PVA117, manufactured by Kuraray), surfactant (aerosol OT, manufactured by Wako Pure Chemical Industries)
A coating solution having a composition of 0.01 part was prepared with a solid content concentration of 2%, and 1 g / m ^{2 was} coated on the glossy layer formed on the release material prepared in Example 1 with a gravure coater. Was immediately bonded to the porous layer formed by the above method at a press nip pressure of 100 kg / cm ² . Using a winder, peel angle (release material, peel point, support angle) is 40
Then, the release material was peeled off, and the glossy layer was transferred and laminated on the porous layer to produce a recording material for inkjet. By providing the intermediate layer, it was possible to increase the winder speed when peeling off the release material without breaking the glossy layer as compared with Example 1.

Example 3 An ink-jet recording material was prepared in the same manner as in Example 2, except that the gloss developing layer in Example 2 was formed by the following method.

(Formation of Gloss Development Layer) Gelatin (PAGI
Jelly strength by method: 260 bloom, isoelectric point: 7.
8) A coating solution (temperature of about 40 ° C.) having a composition of 5 parts, a crosslinking agent (EX-521, manufactured by Nagase Kasei) and 0.01 part of a surfactant (aerosol OT, manufactured by Wako Pure Chemical Industries, Ltd.) was used. And a polyester film (OLY-1) as a release material.
00, manufactured by Teijin Co., Ltd.) and applied and dried on a release material with a roll coater to a dry coating amount of 1.5 g / m ² to form a glossy layer.

Example 4 An ink jet recording material was produced in the same manner as in Example 2 except that the gloss developing layer in Example 2 was formed by the following method.

(Formation of Gloss Development Layer) A 5% solution of butyral resin (ESLEK KX-1, manufactured by Sekisui Chemical) (solvent: mixed solvent of water / isopropyl alcohol, mixing ratio: 60/4)
0), and a polyester film (O)
LY-100 (manufactured by Teijin), and applied and dried on the release material by a gravure coater to a dry coating amount of 0.5 g / m ² to form a glossy layer.

Example 5 An ink-jet recording material was prepared in the same manner as in Example 2, except that the gloss developing layer in Example 2 was formed by the following method.

(Formation of Gloss Development Layer) 12 parts of a 40% methanol dispersion of an organosilica sol (MA-ST-M, manufactured by Nissan Chemical Industries, Ltd.) and 3 parts of polymethyl methacrylate were diluted with methyl ethyl ketone to obtain a solid content of 5 parts. %, And a silicone film-treated polyester film (25E-5511GT, manufactured by Fujimori Kogyo Co., Ltd.) was used as a release material.
Coating and drying were carried out at 5 g / m ² to form a glossy layer.

Example 6 A recording material for ink jet was produced in the same manner as in Example 1 except that a porous layer was further laminated on the porous layer produced in Example 1 by the following method.

(Lamination of Porous Layer) 100 parts of synthetic amorphous silica (Mizukasil P75F, manufactured by Mizusawa Chemical Industries), 25 parts of polyvinyl alcohol (PVA117, manufactured by Kuraray), colloidal silica (Snowtex-O, manufactured by Nissan Chemical Industries, Ltd.) ) 30 parts, cationic dye fixing agent (Polyfix 6)
01, manufactured by Showa Polymer Co., Ltd.) A 25 parts coating liquid was prepared at a solid content of 16%, and the coating liquid was applied and dried using an air knife coater to a dry coating amount of 15 g / m ^2. Then, a porous layer was laminated on the support.

Example 7 An ink-jet recording material was prepared in the same manner as in Example 1 except that the transfer of the glossy layer in Example 1 was carried out by the following method.

(Transfer of Gloss Development Layer, Lamination by Intermediate Layer) Acrylic ester latex (SX-170)
6, manufactured by ZEON CORPORATION) so as to have a solid content of 30%, and a 0.5 g / m ² coating was performed on the porous layer obtained in Example 1 by a gravure coater, and the coated surface was immediately formed. Example 1
Was bonded to the glossy layer formed on the release material by the method described in the above at a press nip pressure of 100 kg / cm ² . Using a winder, peel angle (release material, peel point, support body angle) is 4
The release material was peeled off at 0 °, and the gloss developing layer was transferred and laminated on the porous layer to produce an inkjet recording material. By providing the intermediate layer, it was possible to increase the winder speed when peeling off the release material without breaking the glossy layer as compared with Example 1.

Example 8 Instead of the base paper used as the support in Example 1, 188
μm white polyester film (Melinex D33
0, manufactured by ICI), except that the recording material for ink jet recording was produced in the same manner as in Example 1.

Comparative Example 1 A glossy layer was not transferred onto the porous layer formed in Example 1 and used as a recording material for ink jet.

Comparative Examples 2-3 The coating liquid used in forming the glossy layers of Examples 1 and 3 was applied onto the base paper used as the support in Example 1 by a curtain coater to a dry coating amount of 15 g / m 2. ^By coating and drying so as to obtain No. 2, two types of inkjet recording materials having no porous layer were produced.

Comparative Examples 4 and 5 The coating liquid used for forming the glossy layers of Examples 1 and 3 was not applied onto the release material, but a roll coater was applied on the porous layer prepared in Example 1. 1.5g /
By coating and drying to obtain m ² , two types of ink jet recording materials were produced.

Comparative Examples 6 and 7 The coating liquid used for forming the glossy layers in Examples 4 and 5 was not applied onto the release material, but a gravure coater was applied on the porous layer prepared in Example 1. 0.5g dry coating amount
/ M ² to obtain two types of ink jet recording materials.

(Evaluation) Examples 1 to 8 and Comparative Examples 1 to 7
Was printed using a full color inkjet printer BJC-610J manufactured by Canon. Evaluation was performed by the following methods (Tests 1 to 3), and the results are shown in Table 1.

(Test 1) Image quality: The solid printed portion was visually observed to determine the presence or absence of unevenness. In the solid printing portion where two colors are overlapped, there is no unevenness in the solid printing portion.
In the case of solid color solid printing, there was unevenness in the case of Δ, and in the case of single color solid printing, the case where there was unevenness was evaluated as x. If the ink absorption speed is low, the unevenness becomes worse.

(Test 2) Water resistance: Water droplets were dropped on a solid printed portion of magenta, and after 30 seconds, the water droplets were absorbed by paper, and adhesion of a dye to the paper and reduction in image density of the printed portion were visually observed. ○: No adhesion of the dye to the paper was observed. D: Adhesion of the dye was observed on the paper, but the image density of the printed area was hardly reduced. Δ: The image density of the printed area was clearly reduced. Is indicated by x.

(Test 3) Gloss: JIS-Z-8741 using a gloss meter VGS-300A manufactured by Nippon Denshoku Industries Co., Ltd.
According to the above method, the 75 ° specular gloss of the white background was measured. In order to have a photographic paper-like texture of the photograph, the non-image area 7
The 5-degree specular gloss is preferably 70 or more.

[0090]

[Table 1]

[0091]

As is clear from the examples, the porous layer is formed on the support, the glossy layer is formed on the release material, and the glossy layer is transferred to the porous layer side of the support. After the release, the release material was peeled off from the gloss-generating layer to laminate the gloss-generating layer, thereby providing a method for manufacturing an inkjet recording material having a glossy surface and a high ink absorption rate.

Claims (5)

[Claims] 1. A method for manufacturing a recording material for ink jet recording comprising an ink absorbing layer provided on a support, wherein the ink absorbing layer is an ink absorbing layer in which a porous layer and a glossy layer are laminated. Is formed on a support, and a glossy layer is formed on a release material. After transferring the glossy layer to the porous layer side on the support, the release material is peeled off from the glossy layer. A method for manufacturing a recording material for ink jet recording, comprising laminating the glossy layer on a support. 2. A method for forming a glossy layer containing metal oxide fine particles having an average particle diameter of 300 nm or less and a dry coating amount of 0.1 g / m ^{2 to} 5 g / m ² on a release material. The method for producing a recording material for an ink jet according to claim 1, wherein: 3. The method according to claim 1, wherein an intermediate layer is provided between the porous layer and the glossy layer. 4. After forming the glossy layer on the release material, the intermediate layer is formed on the glossy layer, and the intermediate layer and the glossy layer are simultaneously formed on the porous layer side of the support. The method for producing a recording material for an inkjet according to claim 3, wherein the recording material is transferred to a recording medium. 5. The method according to claim 1, wherein after the porous layer is formed on the support, the intermediate layer is formed on the porous layer, and the glossy layer is transferred onto the intermediate layer. 4. The method for producing an ink jet recording material according to item 3.