Data medium

FIELD: physics, computer engineering.

SUBSTANCE: data medium includes a series of a substrate, a first ink-receiving layer which includes an inorganic particle, a water-soluble polymer having a hydroxyl group, a water-soluble polymer without a hydroxyl group and a boric acid mixture; and a second ink-receiving layer which includes an inorganic particle, a water-soluble polymer having a hydroxyl group and a boric acid mixture. The second ink-receiving layer does not include a water-soluble polymer without a hydroxyl group, or the second ink-receiving layer includes a water-soluble polymer without a hydroxyl group, but the content of the water-soluble polymer without a hydroxyl group relative to the content of the inorganic particle in the second ink-receiving layer is less than the content of the water-soluble polymer without a hydroxyl group relative to the content of the inorganic particle in the first ink-receiving layer.

EFFECT: more efficient operation of the device.

8 cl, 1 dwg, 2 tbl

 

The technical field to which the invention relates

The present invention relates to the media.

The level of technology

In recent years, increasing the demand for ink-jet printing method in the field of industrial printing. Commercial printing requires not only the properties that are required for the recording media used in ink-jet printing method, such as high optical density of the resulting image and the high stability during storage in humid environment, i.e., high moisture resistance, but also high Krasnopolye to achieve high-speed printing and the property by which hampered the formation of scratches on the surface of the carrier information transfer roller, when the information carrier is transmitted at a high speed, i.e. high resistance to scratching in transit.

As described above, for commercial printing are a variety of desirable properties. In particular, as a method of obtaining high Krasnopolsky to achieve high-speed printing known information carrier comprising a substrate and two krasnopresnya layer deposited on a substrate. Laid patent publication Japan No. 2008-265110 describes the media, who in krasoprema layer, located closer to the p�dloce, the content of the binder is 7 wt.% or more and 12 wt.% or less relative to the content of hydrated aluminum oxide serving as inorganic particles, and in another krasoprema layer, located farther from the substrate, the content of the binder is 4 wt.% or more and 6 wt.% or less relative to the content of hydrated aluminum oxide.

Summary of the invention

However, as a result of research conducted by the authors of the present invention, it was discovered that the storage medium described in patent publication laid Japan No. 2008-265110, does not possess sufficient resistance to scratching in transit.

The present invention provides an information carrier, which provides high optical density and moisture resistance of the resulting image, and which has a high Krasnopolye and good resistance to scratching in transit.

Information carrier according to the aspect of the present invention includes a substrate, first raskopanny layer and the second raskopanny layer in this order. In the media the first raskopanny layer includes an inorganic particle, a water-soluble polymer having a hydroxyl group, a water-soluble polymer not having the hydroxyl group, and a mixture of boric acid. W�Roy raskopanny layer includes an inorganic particle, water-soluble polymer having a hydroxyl group and a mixture of boric acid, and satisfies the condition (1): "the second raskopanny layer does not include a water-soluble polymer not having the hydroxyl group or condition (2): "second raskopanny layer includes a water-soluble polymer not having the hydroxyl group, but the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the second krasoprema layer is less than the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the first krasoprema layer".

According to the aspect of the present invention, it is possible to offer the media, which provides high optical density and moisture resistance of the obtained image and which has a high Krasnopolye and good resistance to scratching in transit.

The following distinctive features of the present invention will become apparent from the following description of exemplary embodiments in conjunction with the attached drawing.

Brief description of the drawing

The drawing is a schematic cross sectional view of the information carrier illustrating an example of a layered structure according to the present�th invention.

The implementation of the invention

Hereinafter the present invention will be described in detail using embodiments.

As a result of the research conducted by the authors of the present invention, it was discovered that an advantage of the present invention can be achieved by the distinguishing features of the present invention. That is, at least two krasnopresnya layer deposited on a substrate, and the first raskopanny layer located closer to the substrate, simultaneously includes, as the binder, water-soluble polymer having a hydroxyl group and a water-soluble polymer not having the hydroxyl group, and the second raskopanny layer located farther from the substrate, comprises, as the binder, water-soluble polymer having a hydroxyl group, and satisfies the condition (1): "the second raskopanny layer does not include a water soluble polymer, not having a hydroxyl group or condition (2): "second raskopanny layer includes a water-soluble polymer not having the hydroxyl group, but the content of water-soluble polymer, not keyusage hydroxyl groups, in relation to the content of inorganic particles in the second krasoprema layer is less than the content of odorant�imago polymer, not having a hydroxyl group, in relation to the content of inorganic particles in the first krasoprema layer". The mechanism is unclear, but water-soluble polymer having a hydroxyl group, krasnopresnya layers reacts with a mixture of boric acid and sutured, while the water-soluble polymer not having the hydroxyl group that reacts with a mixture of boric acid and not sewn. Accordingly, it was discovered the importance of the fact that the number of the stitched region in the first krasoprema layer is smaller than the size of stitched area in the second krasoprema layer.

Media

Information carrier according to the present invention includes a substrate, first raskopanny layer and the second raskopanny layer in this order. An example of a layered structure according to the present invention will be described in relation to the drawing. The storage medium is illustrated in the drawing, comprises a substrate 1, the first raskopanny layer 2 and the second raskopanny layer 3. Another layer can be placed between the substrate 1 and the first kratkovremennym layer 2, between the first kratkovremennym layer 2 and the second kratkovremennym layer 3 or the second krasoprema layer 3, with the proviso that not violated the advantage of the present invention. According to the present invention, the substrate 1, the first to�accopany layer 2 and the second raskopanny layer 3 may be arranged in this order so so they clung to each other. According to the present invention, the storage medium may be a storage media for ink-jet printing, which is used in the ink jet printing method. The components that make up an information carrier according to the present invention, will be described below.

Substrate

Examples of the substrate include a substrate that includes only a paper base, and a substrate comprising a paper base and a polymer layer, that is, a paper base coated with the polymer. According to the present invention, it is preferable to use a substrate comprising a paper base and the polymeric layer. In this case, the polymer layer can be applied only on one surface of the base paper, but the polymer layer is preferably applied on both surfaces of the base paper.

A paper base made using cellulose as a main starting material and optionally adding a synthetic analog of cellulose, which comprises a polypropylene or similar material, or synthetic fiber that is nylon, complex polyester or a similar material for the manufacture of paper. Examples of cellulose include hardwood bleached Kraft pulp (LBKP), bleached hardwood sulfite pulp (LBSP), softwood bleached sulphate of cellulo�(NBKP), softwood bleached sulfite pulp (NBSP), hardwood dissolving pulp (LDP), coniferous dissolving pulp (NDP), hardwood unbleached Kraft pulp (LUKP) and softwood unbleached Kraft pulp (NUKP). These materials can be used individually or in combination of two or more materials as required. Among these various types of cellulose are preferably used types of LBKP, NBSP, LBSP, NDP and LDP, all of which have a high content korotkovolnovogo component. The pulp is preferably a chemical pulp (sulfate pulp or sulfite pulp), which has a low content of impurities. Cellulose, which is treated by bleaching to improve the degree of whiteness, is also preferred. In a paper basis, you can enter a sizing substance, a white pigment, a reinforcing paper substance, fluorescent blastomatous substance, water-retaining substance, wetting, dispersing agent, plasticizing substance and similar substances, to the extent required.

According to the present invention, the density of the paper to the base paper, which is defined by JIS P 8118, is preferably 0.6 g/cm3or more and 1.2 g/cm3or less. In addition, the density of the paper preferably is 0.7 �/cm 3or more and 1.2 g/cm3or less.

According to the present invention, when the substrate includes a polymer layer, the thickness of the polymer layer is preferably 20 μm or more and 60 μm or less. According to the present invention, the thickness of the polymer layer is calculated in the following manner. First make a cross-section of the storage media using a microtome, and is a cross-section observed in the scanning electron microscope. Then measure the thickness of the polymer layer in an arbitrary 100 or more points, and its average value is defined as the thickness of the polymer layer. The thicknesses of other layers according to the present invention are also calculated using this method.

In the case where the polymer layer is applied to both surfaces of the base paper, each of the values of the thickness of the polymer layer on the two surfaces is preferably in the above interval. thermoplastic polymer is preferably used as the polymer for the polymer layer. Examples of thermoplastic polymers include acrylic polymers, acrylic silicone polymers, polyolefin polymers and copolymers of styrene and butadiene. Among these polymers preferably used polyolefin polymers. According to the present invention, the term "polyolefin�vy polymer" means a polymer, produced by using the olefin as a monomer. Specific examples include homopolymers of ethylene, propylene, isobutylene or similar monomers, and the corresponding copolymers. These polyolefin polymers can be used individually or in combination of two or more polymers as required. Among them, preferably used polyethylene. As polyethylene is preferably used a low density polyethylene (LDPE) and high density polyethylene (HDPE).

The polymer layer may contain a white pigment, a fluorescent blastomatous substance, ultramarine blue pigment, etc. to adjust the opacity, whiteness and color tone. One of them is preferably injected white pigment, as it is able to improve the matte. Examples of the white pigment include titanium dioxide rutile type and titanium dioxide anatase type.

Raskopanny layer

According to the present invention, cracovienne layers can only be applied on one surface of the substrate or on both surfaces of the substrate. The total thickness of all krasnopresnya layers deposited on one surface of the substrate is preferably 30 μm or more and 45 μm or less.

According to the present invention, cracovienne layers include at least two layers o� first raskopanny layer and the second raskopanny layer. Next will be described the materials that you can enter in each of krasnopresnya layers.

First raskopanny layer

According to the present invention, the first raskopanny layer includes an inorganic particle, a water-soluble polymer having a hydroxyl group and a water-soluble polymer not having the hydroxyl group, the polymer functioning as the bonding material, and a mixture of boric acid, functioning as a crosslinking reagent. First raskopanny layer preferably has a thickness equal to 15 μm or more and 30 μm or less.

(1) Inorganic particle

The average primary particle size of inorganic particles is preferably 50 nm or less, preferably 1 nm or more and 30 nm or less and particularly preferably 3 nm or more and 10 nm or less. According to the present invention, the average primary particle size of inorganic particles is an average value of diameters of circles having areas equal to the areas of projections of primary particles of the inorganic particles when the inorganic particles observed in the electron microscope. In this case, the measurement is carried out at least 100 or more points.

According to the present invention, inorganic particles can be used in a coating liquid �La application kratkovremennogo layer in a state in which inorganic particles are dispersed using a dispersing agent. The average size of secondary particles of inorganic particles in a dispersed state is preferably 0.1 nm or more and 500 nm or less, preferably 1 nm or more and 300 nm or less and particularly preferably 10 nm or more and 250 nm or less. The average size of secondary particles in the case of inorganic particles in a dispersed state can be measured using the method of dynamic light scattering.

According to the present invention, the mass percentage content of inorganic particles in the first krasoprema layer is preferably 30 wt.% or more and 98 wt.% or less and preferably 70 wt.% or more and 96 wt.% or less.

According to the present invention, the amount (g/m2) inorganic particles, applied in the manufacture of the first kratkovremennogo layer is preferably 15 g/m2or more and 45 g/m2or less. When the amount of inorganic particles is in the above interval, the first raskopanny layer can easily have a preferred thickness.

Examples of the inorganic particles used according to the present invention include particles that are hydrated aluminium oxide, aluminium oxide, silicon dioxide, colloidal di�xed silicon, titanium dioxide, zeolite, kaolin, talc, hydrotalcite, zinc oxide, zinc hydroxide, aluminum silicate, calcium silicate, magnesium silicate, zirconium dioxide and zirconium hydroxide. These inorganic particles can be used individually or in combination of two or more inorganic particles as required. One of them is preferably used inorganic particles containing hydrated aluminium oxide, aluminium oxide and silica, all of which can have a porous structure exhibiting high Krasnopolye.

Hydrated oxide of aluminum, which can properly be used in krasoprema layer is a substance described by the General formula X:

Al2O3-n(OH)2n•mH2O(General formula (X)

(where n is 0, 1, 2 or 3, m is 0 or more and 10 or less, preferably 0 or more and 5 or less, however, the numbers m and n are not simultaneously equal to zero). It should be noted that the number m may be an integer, because in many cases mH2O represents the removed aqueous phase which does not participate in the formation of the crystal lattice. In addition, the number m may reach zero when the hydrated alumina is heated.

According� the present invention, hydrated alumina can be produced in a known manner. Particularly relevant examples include the way in which hydrolyze the alkoxide of aluminum, the way in which hydrolyzing sodium aluminate, and the way in which it is neutralized with aqueous sodium aluminate solution, adding thereto an aqueous solution of aluminum sulfate or aluminum chloride.

Known crystal structures of hydrated aluminum oxide includes an amorphous material, gibbsite and boehmite, depending on the temperature of heat treatment. The crystal structure of hydrated aluminum oxide can be analyzed by x-ray diffractometry. According to the present invention, among them, preferred is a hydrated aluminium oxide having the structure of boehmite or amorphous hydrated alumina. Specific examples include hydrated aluminum oxide is described, for example, laid patent publication Japan No. 7-232473, 8-132731, 9-66664 and 9-76628. Examples of commercially available hydrated alumina include DISPERAL HP14 and HP18 (both material manufactured by Sasol). They can be used individually or in combination of two or more materials as required.

According to the present invention, hydrated alumina has a specific on�Ernest, component is preferably 100 m2/g or more and 200 m2/g or less and preferably 125 m2/g or more and 190 m2/g or less, and specific surface area determined by way of brunauer-Emmett-teller (BET). Way BET is the way in which carry out the adsorption of molecules or ions having a known size on the sample surface, and the specific surface of the sample change based on the amount of adsorption. According to the present invention, as the gas is gaseous nitrogen, which adsorb on the sample.

Hydrated alumina preferably has a plate shape. In addition, the average size ratio that represents the ratio of the average size of primary particles on a flat surface of hydrated aluminum oxide and the average thickness of particles of hydrated aluminum oxide is preferably 3.0 or more and 10 or less. The average thickness of the particles is determined as follows. Particles of hydrated aluminum oxide are observed in the electron microscope, and randomly select 10 particles of hydrated aluminum oxide. The average thickness of the particles is calculated as an average value of thickness of 10 particles of hydrated aluminum oxide. In addition, the ratio of the minimum particle size of a flat surface and �maximum particle size of the flat surface is preferably of 0.60 or more and 1.0 or less.

The obtained vapor-phase method alumina is preferably used as the aluminum oxide in krasoprema layer. Examples of such obtained vapor-phase method alumina include γ-alumina, α-alumina, β-alumina, θ-alumina and χ-alumina. Among them, from the viewpoint of optical density of image and Krasnopolsky, it is preferable to use γ-alumina. Specific examples of the obtained vapor-phase method alumina include AEROXIDE Alu C Alu Alu 130 and 65, all of these materials are manufactured by EVONIK Industries.

According to the present invention, the specific surface of the obtained vapor-phase method alumina, a certain way BET, is preferably 50 m2/g or more and preferably 80 m2/g or more. The specific surface of the obtained vapor-phase method alumina is preferably 150 m2/g or less and preferably 120 m2/g or less.

The average size of primary particles of the obtained vapor-phase method alumina is preferably 5 nm or more and preferably 11 nm or more. The average size of primary particles of the obtained vapor-phase method alumina is preferably 30 nm or less and preferably 15 nm or less.

The hydrated� aluminum oxide and aluminum oxide, used according to the present invention, can be mixed with a coating liquid for coating kratkovremennogo layer in the form of an aqueous liquid dispersion. You can use acid as dispersing agents for aqueous liquid dispersion. The acid is preferably used sulfonic acid represented by the General formula Y, because it is possible to obtain the effect of suppressing the spreading of the image:

R-SO3H(the General formula (Y)

(where R is any radical, which may be a hydrogen atom, an alkyl group containing from 1 to 4 carbon atoms, or alkenyl group containing from 1 to 4 carbon atoms, and R may contain as under oxoprop, a halogen atom, alkoxygroup or acyl group). According to the present invention, the acid content is preferably 1.0 wt.% or more and 2.0 wt.% or less, and preferably 1.3 wt.% or more and 1.6 wt.% or less relative to the total content of hydrated aluminum oxide and aluminum oxide.

Silicon dioxide used in krasoprema layer is divided into two main types of silicon dioxide, namely silica obtained by wet method, and silica obtained by the dry method (vapor�phase method), regarding the method of manufacturing the same. Known wet method is a method in which active silica is produced by acid decomposition of a silicate, active silica in a moderate way is polymerized, and the polymerized product coagulums and precipitates, resulting in a hydrated silicon dioxide. Examples of known dry method (vapor-phase method include a method of obtaining anhydrous silica by hydrolysis in a flame, in which the silicon halide is hydrolyzed in the vapor phase at a high temperature, or a method (arc method) in which silica sand and coke are heated, restore and gasified by arc in an electric furnace, and the resulting gas is oxidized with air. According to the present invention, it is preferable to use silica obtained by the dry method (vapor-phase method), hereinafter called the term "obtained vapor-phase method silica". The reason for this is as follows. The obtained vapor-phase method silica has a particularly large specific surface area, and thus, it has a particularly high Krasnopolye. In addition, the obtained vapor-phase method silica has a low refractive index, and thus, it can protects the�ü transparency krasoprema layer, the result is a good ability to display color. Specific examples of the obtained vapor-phase method silica include AEROSIL (manufacturer Nippon Aerosil Co., Ltd.) and a series of Reolosil QS (manufacturer TOKUYAMA Corporation).

According to the present invention, the specific surface of the obtained vapor-phase method silica, a certain way BET, is preferably 50 m2/g or more and 400 m2/g or less, and preferably 200 m2/g or more and 350 m2/g or less.

According to the present invention obtained by a vapor-phase method silica can be used in a coating liquid for coating kratkovremennogo layer in a state in which the particles of the obtained vapor-phase method silica is dispersed dispersing agent. The obtained vapor-phase method silica in a dispersed state is preferably has an average size of secondary particles of 50 nm or more and 300 nm or less. The average size of secondary particles of the obtained vapor-phase method silica in a dispersed state can be measured by the method of dynamic light scattering.

According to the present invention, hydrated alumina, aluminum oxide and silicon dioxide can be used in the form of a mixture. In particular, can be used�ü method, in which at least two substances selected from hydrated aluminum oxide, aluminum oxide and silicon dioxide, are mixed and dispersed in powder form for the manufacture of a liquid dispersion.

(2) Binder material

According to the present invention, the first raskopanny layer simultaneously includes, as the binder, water-soluble polymer having a hydroxyl group and a water-soluble polymer not having the hydroxyl group. It should be noted that, according to the present invention, the term "water soluble polymer" means a polymer whose solubility in water at 25°C is 5 wt.% or more.

According to the present invention, the weight ratio of the total content of the binder and inorganic particles in the first krasoprema layer is preferably 10 wt.% or more and 19 wt.% or less.

According to the present invention, water-soluble polymer having a hydroxyl group preferably has a hydroxyl number of 500 mg KOH/g or more. Water-soluble polymer having a hydroxyl group preferably has a hydroxyl number comprising 1300 mg KOH/g or less. In addition, water-soluble polymer having a hydroxyl group preferably has a hydroxyl number from�component 600 mg KOH/g or more and 1000 mg KOH/g or less. It should be noted that the term "hydroxyl number of the polymer" means the amount (mg) of potassium hydroxide required for acetylation of hydroxyl groups contained in 1 g of the polymer. The hydroxyl number is measured by a method described in JIS K 1557.

According to the present invention, the water-soluble polymer having hydroxyl group has a weighted average molecular weight component is preferably 10000 or more and 1000000 or less, and preferably 100000 or more and 500,000 or less, with a weighted average molecular weight determined by the method of gel permeation chromatography (GPC) using polystyrene as the standard.

The mass ratio of the content of water-soluble polymer having a hydroxyl group, and the content of inorganic particles in the first krasoprema layer is preferably 5.0 wt.% or more and 17.0 wt.% or less, and preferably 10.0 wt.% or more and 15.0 wt.% or less.

Examples of water-soluble polymer having a hydroxyl group, are polyvinyl alcohol, derivatives of polyvinyl alcohol, poly(α-hidroxiacidului acid) and poly(2-hydroxyethylacrylate). These water-soluble polymers having hydroxyl groups, can be used individually or in combination of two or more polymers, to the extent you want to�. Among these polymers preferably used polyvinyl alcohol and derivatives of polyvinyl alcohol. Examples of derivatives include polyvinyl alcohol modified with cations of polyvinyl alcohol modified with anions polyvinyl alcohol modified with silanol polyvinyl alcohol and polyvinylacetal. Among these polymers preferably used, in particular, polyvinylacetal.

Polyvinyl alcohol can be synthesized, for example, by saponification of polyvinyl acetate. The degree of saponification of polyvinyl alcohol is preferably 80 mol.% or more and 100 mol.% or less, and preferably 85 mol.% or more and 98 mol.% or less. It should be noted that the term "degree of saponification" means the ratio of the number polydactyly groups obtained in the saponification reaction, when polyvinyl alcohol is synthesized by saponification of polyvinyl acetate. According to the present invention, a value measured according to the method described in JIS K 6726, is used as the degree of saponification. The average degree of polymerization of polyvinyl alcohol is preferably 1500 or more, and preferably 2000 or more and 5000 or less. Srednevekovoy degree of polymerization, determined in accordance with the method, which describes the JIS K 6726, use qualities in� average degree of polymerization of polyvinyl alcohol.

According to the present invention, the term "water-soluble polymer not having the hydroxyl group" means a water-soluble polymer, in which practically do not contain hydroxyl groups. In particular, water-soluble polymer not having the hydroxyl group, preferably has a hydroxyl number of 50 mg KOH/g or less.

According to the present invention, the water-soluble polymer not having the hydroxyl group, has a weighted average molecular weight component is preferably 50000 or more and 1000000 or less, and preferably 100000 or more and 500,000 or less, with a weighted average molecular weight determined by GPC method using polystyrene as the standard.

According to the present invention, the water-soluble polymer not having the hydroxyl group preferably has a high glass transition temperature, and therefore becomes a high resistance to scratching in transit. The glass transition temperature water-soluble polymer not having the hydroxyl group, is preferably 40°C or higher and 200°C or below and preferably 90°C or higher and 200°C or below.

The mass ratio of the content of water-soluble polymer not having the hydroxyl group and the content of inorganic particles in the first krasoprema layer is preferably� 1.0 wt.% or more and 15.0 wt.% or less, and preferably 1.0 wt.% or more and 10.0 wt.% or less.

Specific examples of water-soluble polymer not having the hydroxyl group include polyvinylpyrrolidone, polyacrylic acid, poly (methacrylic acid, polyethylene oxide, polyacrylamide and derivatives thereof. These water-soluble polymers that do not contain hydroxyl groups, can be used individually or in combination of two or more polymers, to the extent required.

According to the present invention, the mass percentage content of water-soluble polymer not having the hydroxyl group, in the first krasoprema layer is preferably a 0.1-fold or more and 3.0 times or less, and preferably of 0.3 times or more and 2.0 times or less the mass percentage of water-soluble polymer having a hydroxyl group, relative to mass ratio.

First raskopanny layer may include a binder material, which is different from the water-soluble polymer having a hydroxyl group and a water-soluble polymer not having the hydroxyl group, with the proviso that it does not violate an advantage of the present invention. Examples of other binders include starch derivatives such as oxidized starch, esterified starch and esterified phosphoric acid starch; cellulose derivatives, such�to carboxymethylcellulose and hydroxyethylcellulose; as well as synthetic polymers such as polyurethane polymers, unsaturated koinopolitia polymers, copolymers of vinyl chloride and vinyl acetate, polyvinyl butyral and alkyd polymers. These other binder materials can be used individually or in combination of two or more binders as required.

(3) Crosslinking reagent

According to the present invention, the first raskopanny layer comprises a mixture of boric acid as a crosslinking reagent. It should be noted that, according to the present invention, the term "mixture of boric acid" also means borate.

Examples of mixtures of boric acid include orthoboric acid (H3BO3), metaboric acid and Gibernau acid. Borat may be a water soluble salt of a mixture of boric acid. Examples include salts of alkali metals and a mixture of boric acid, such as sodium salt of a mixture of boric acid and potassium salt of a mixture of boric acid; salts of alkaline earth metals and mixtures of boric acid, such as magnesium salt of a mixture of boric acid and calcium salt of a mixture of boric acid; and ammonium salts of mixtures of boric acid. One of them orthoboric acid is preferably used from the viewpoint of stability of the coating liquid with time and an effect of suppressing obrazovaniyami.

The number of used mixtures of boric acid can be adjusted appropriately depending on the conditions of production, etc. According to the present invention, the weight ratio of the content of the mixture of boric acid and the content of water-soluble polymer having a hydroxyl group, in the first krasoprema layer is preferably 5 wt.% or more and 50 wt.% or less, and preferably 20 wt.% or more and 30 wt.% or less.

The mass ratio of the content of the mixture of boric acid and inorganic particles in the first krasoprema layer is preferably 1.5 wt.% or more and 2.5 wt.% or less and preferably 2.0 wt.% or more and 2.5 wt.% or less.

(4) Other additives

According to the present invention, the first raskopanny layer may include additives that are identical to the components described above. Specific examples of these additives are acidity regulator, thickener, which increases the fluidity of a substance that inhibits foaming agent, a defoamer, a surfactant that reduces the adhesion of a substance penetrating substance, a color pigment, a color dye, a fluorescent brilliance forming a substance that absorbs ultraviolet radiation substance, an antioxidant, an antiseptic agent, an antifungal agent, in�nepronitsaemoe means, fixing the dye substance, a curing agent and weather resistant material.

Second raskopanny layer

According to the present invention, the second raskopanny layer includes an inorganic particle, a water-soluble polymer having a hydroxyl group, and functioning as a binder material, and a mixture of boric acid, functioning as a crosslinking reagent. In addition, the second raskopanny layer satisfies the condition (1): "the second raskopanny layer does not include a water-soluble polymer not having the hydroxyl group", or the condition (2): "second raskopanny layer includes a water-soluble polymer not having the hydroxyl group, but the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the second krasoprema layer is less than the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the first krasoprema layer". Second raskopanny layer preferably has a thickness equal to 5 μm or more and 15 μm or less.

(1) Inorganic particle

As the inorganic particles for the second kratkovremennogo layer can be used such inorganic particles, examples of which�s are inorganic particles, which can be used in the first krasoprema layer.

According to the present invention, the mass percentage content of inorganic particles in the second krasoprema layer is preferably 30 wt.% or more and 98 wt.% or less and preferably 70 wt.% or more and 96 wt.% or less.

According to the present invention, the amount (g/m2) inorganic particles used for the manufacture of the second kratkovremennogo layer is preferably 3 g/m2or more and 15 g/m2or less. When the amount of inorganic particles is in the above interval, the second raskopanny layer can easily have a preferred thickness.

(2) Binder material

According to the present invention, the second raskopanny layer includes a water-soluble polymer having a hydroxyl group in the binder material. As a water-soluble polymer having hydroxyl group and used in the second krasoprema layer, it is possible to use the same polymers, examples of which are binder materials that can be used in the first krasoprema layer.

The mass ratio of the content of water-soluble polymer having a hydroxyl group, and the content of inorganic particles in the second krasoprema layer is a p�edocfile 7.0 wt.% or more and 15.0 wt.% or less and preferably of 8.5 wt.% or more and 12.0 wt.% or less.

The mass ratio of the content of water-soluble polymer not having the hydroxyl group and the content of inorganic particles in the second krasoprema layer is preferably less than 5.0 wt.%, preferably less than 3.0 wt.% and particularly preferably 0 wt.%, that is, satises (1): "the second raskopanny layer does not include a water-soluble polymer not having the hydroxyl group.

In addition, the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the second krasoprema layer is preferably 20 wt.% or less relative to the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the first krasoprema layer. In addition, the value that represents a difference between the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the first krasoprema layer, and the content of water-soluble polymer not having the hydroxyl group relative to the content of inorganic particles in the second krasoprema layer is preferably 5 wt.% or more and preferably 10 wt.% or more.

Second raskopanny layer may include a binder material which is different from the water-soluble polymer, having a hydroxyl group, with the proviso that not violated the advantage of the present invention. As other binder materials can be used such polymers are exemplary polymers proposed as the binder that can be used in the first krasoprema layer.

(3) Crosslinking reagent

According to the present invention, the second raskopanny layer comprises a mixture of boric acid as a crosslinking reagent. As a mixture of boric acid used in the second krasoprema layer, you can use the same mixture of boric acid, examples of which are a mixture of boric acid that can be used in the first krasoprema layer.

The number of used mixtures of boric acid can be adjusted appropriately in accordance with the conditions of production, etc. According to the present invention, the weight ratio of the content of the mixture of boric acid and the content of water-soluble polymer having a hydroxyl group, in the second krasoprema layer is preferably 5 wt.% or more and 20 wt.% or less, and preferably 5 wt.% or more and 15 wt.% or less.

The mass ratio of the content of the mixture of boric acid and inorganic particles in the second krasoprema layer is the preferred�about 1.0 wt.% or more and 2.0 wt.% or less.

(4) Other additives

According to the present invention, the second raskopanny layer may include additives that are identical to the components described above. In particular, you can use the same additives as examples representing other additives that can be used in the first krasoprema layer.

A method of manufacturing the information carrier

According to the present invention, a method of manufacturing the information carrier is not limited in a certain way. A method of manufacturing the information carrier may include the stage of preparing a coating liquid for coating kratkovremennogo layer and the step of applying the coating liquid for the manufacture kratkovremennogo layer on the substrate. A method of manufacturing the information carrier will be described below.

A method of manufacturing a substrate

According to the present invention, the commonly used method for the manufacture of paper can be used as a method of manufacturing a paper substrate. Examples of the paper machine are dlinnoyu the car Purkinje (Fourdrinier), cylindrical machine, drum machine and twin-wire machine. To improve the surface smoothness of the base paper is possible to carry out surface treatment by exposure to heat and pressure during or after the manufacturing process of the boom�I. Specific examples of surface treatment methods are calendering, such as machine calendering, and supercalendering.

In the case where the substrate includes a polymer layer, examples of a method for applying a polymer layer on a paper basis, i.e., the method of coating paper base polymer include a method of melt extrusion, wet method of laminating and dry laminating method. From among these methods, preferred is a method of melt extrusion in which molten polymer is extruded on one surface or on both surfaces of the base paper for coating paper base polymer. Example widely used method is a method (also referred to by the term "extrusion coating method"), which includes the conversion of a polymer extruded from the extrusion head, in contact with a paper substrate, which passes through the clamping point between the pressure roller and a cooling roller, and a connection pressure of the polymer and paper substrate by clamping the lamination of the base paper with a polymer layer. For the manufacture of the polymer layer by the method of melt extrusion is possible to pre-treat thus to provide a more durable connection of the base paper and the polymer layer with each other. When�trollers pre-processing represents processing by acid etching with a mixture of sulfuric acid and chromic acid, flame processing gas flame treatment, ultraviolet radiation, corona treatment, glow discharge treatment and the processing of applying the adhesive coating alkylsilane or similar material. Among these types of pre-treatment is the preferred treatment by corona discharge.

A method of manufacturing kratkovremennogo layer

For the information carrier according to the present invention can be used, for example, the following methods as the method of manufacturing kratkovremennogo layer on the substrate. First made of a coating liquid for coating kratkovremennogo layer and then the coating liquid is applied onto a substrate and dried. In this way it is possible to produce an information carrier according to the present invention. In the method of applying the coating liquids can be used, for example, a device for coating irrigation, a device for coating by using an extrusion system or a device for coating by means of system of the movable funnel. A coating liquid can be heated during application of the coating. Examples of methods of drying after coating include ways to use the device for drying with hot air, such as a linear tunnel dryer, an arc dryer, air Pestana sushi�ka or sinusoidal air floating dryer, and also methods with the use of dryers using infrared radiation, the heating of the dryer, a microwave dryer or similar device.

Examples

Hereinafter the present invention will be described in more detail using examples and comparative examples. The present invention is not limited to the examples described below, provided that they do not go beyond the essence of the present invention. It should be noted that the term "part" in the examples below represents mass ratio, unless you define a different condition.

Making media

Making the substrate

Mixed 80 parts of LBKP pulp having a degree of grinding of 450 ml by the canadian standard (CSF), 20 parts of pulp NBKP having a degree of grinding 480 ml by the canadian standard (CSF), 0.60 parts cationizing starch, 10 parts of heavy calcium carbonate, 15 parts of light calcium carbonate, 0.10 parts of the dimer of alkylbetaine and 0.030 parts of cationic polyacrylamide. To this mixture was added water so that the mixture had a solid content comprising 3.0 wt.%, and as a result received a paper material. After that the paper material is directed to the manufacture of paper, using dlinnoyu the paper machine Fourdrinier, to�the Torah was carried out by three-stage wet pressing, followed by drying using a multi-cylinder dryer. The resulting paper was then impregnated with an aqueous solution of oxidized starch using a size press so as to obtain after drying, the solids content comprising 1.0 g/m2and then dried. In addition, the paper was sent to finish in a machine calender, and manufactured in such a way that the base paper had a surface density equal to 170 g/m2the degree of sizing on Stockigt (Stöckigt), a component of 100 seconds, an air permeability of 50 seconds, the indicator of smoothness by Becca (Bekk) of 30 seconds, rigidity on Gurley (Gurley), component of 11.0 mn, and a thickness of 100 μm. Thereafter, a polymer composition containing 70 parts of low density polyethylene, 20 parts of high density polyethylene and 10 parts of titanium dioxide was coated on the surface of the base paper in such a way that the density of the dry coating was 25 g/m2. This surface is called the term "main surface of the substrate". Furthermore, a polymer composition containing 50 parts of low density polyethylene, was coated on another surface of the base paper in such a way that the density of the dry coating was 25 g/m2. Thus, the produced substrate whose both surfaces were coated with polymer.

Production of dispersing inorganic particles �fluid

To 160,0 g of pure water was added to 40.0 g of hydrated aluminum oxide DISPERAL HP14 (producer Sasol) and 0.6 g (1.5 wt.% relative to the solids content of hydrated aluminum oxide) methanesulfonic acid. The resulting mixture is then stirred with a mixer for 30 minutes. Thus, the produced inorganic dispersant particles liquid 1 containing hydrated aluminium oxide as inorganic particles (solid content was 20.0 wt.%). Hydrated oxide of aluminum in the inorganic dispersant fluid particles 1 had an average size of primary particles constituting 130 nm.

The production of the aqueous binder material

Described below is an aqueous solution produced as an aqueous solution containing water-soluble polymer having a hydroxyl group (solid content amounted to 8.0 wt.%).

• Aqueous solution of polymer A1: aqueous solution of polyvinyl alcohol PVA 235 (manufacturer Kuraray Co., Ltd.), whose degree of polymerization was 3500 and a degree of saponification 88 mol.%.

Described below aqueous solutions produced as aqueous solutions, each containing a water-soluble polymer containing hydroxyl groups (solid content in each solution in drawing up�lo of 8.0 wt.%).

The aqueous solution of the polymer B1: aqueous solution of polyvinylpyrrolidone K-60 (manufacturer ISP Japan Ltd.), whose molecular weight amounted to 400000, and the glass transition temperature was 178°C.

The aqueous solution of the polymer B2: aqueous solution of polyacrylic acid (manufacturer Wako Pure Chemical Industries, Ltd.), whose molecular weight was 1000000, and the glass transition temperature was 120°C.

The aqueous solution of the polymer B3: aqueous solution of polyacrylamide (manufacturer Wako Pure Chemical Industries, Ltd.), whose molecular weight was 1000000, and the glass transition temperature was 180°C.

The aqueous solution of the polymer B4: aqueous solution of polyethylene oxide (manufacturer Wako Pure Chemical Industries, Ltd.), whose molecular weight was 1000000, and the glass transition temperature was 16°C.

Making media

The first coating liquid and second coating liquid is simultaneously applied to the substrate manufactured as described above, in this order, using the device for coating irrigation, and dried with hot air at a temperature of from 60°C to 100°C, obtaining in this way a carrier of information. At this stage, the thickness of film (μm) was determined at the levels presented in table 1. Each of the used first and second coating liquids were made by mixing cooked according�SSS outlined above liquid dispersion of the inorganic particles (solid content of 20.0 wt.%), the aqueous solution of the binder (solid content of 8.0 wt.%) and an aqueous solution of orthoboric acid (solid content of 5.0 wt.%), functioning as cross-linking reagent, so that the relative solid content was the ratio presented in table 1.

Table 1.
The conditions of manufacturing the recording medium and the thickness of the layer
Room media informationFirst raskopanny layerSecond raskopanny layerThe total probability the thickness of the dye-receiving layer (μm)
The conditions of manufacture of the first coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water solution. imago poly-measure, which is hydroc-strong group (Krat-of)Mass ratio, making odorant-Voronovo polymer having no hydroc-strong group, and odorant-Voronovo polymer, having hydroc-strong group (Krat-of) The conditions of manufacture of the second coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water-dissolve-
ICDO poly-measure, which is hydroc-strong group (Krat-of)
The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Remy polymer not having the hydroxyl groupThe substance boric acid (part)The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Remy polymer not having the hydroxyl groupThe substance boric acid (part)
The substance of an aqueous solution of polymer A1 (part)TypeThe substance (part)The substance of an aqueous solution of polymer A1 (part)TypeThe substance (part)
The recording medium 110010B112250,200,1010010-01100,1035
Media 210010B122250,200,2010010-01100,1035
Media 310010B132250,200,30100 10-01100,1035

td align="center"> 0
Media 410010B152250,200,5010010-01100,1035
Media 510010B193250,300,9010010-01100,1035
Media 68B174250,500,8810010-01100,1035
Media 71005B1102250,402,0010010-01100,1035
Media 81005B1152250,403,0010010-1100,1035
The information carrier 910010B212250,200,1010010-01100,1035
The storage medium 1010010B232250,200,3010010-01100,1035

Table 1. (continued)
Room wear�I information First raskopanny layerSecond raskopanny layerThe total probability the thickness of the dye-receiving layer (μm)
The conditions of manufacture of the first coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water solution. imago poly-measure, which is hydroc-strong group (Krat-of)Mass ratio, making odorant-Voronovo polymer having no hydroc-strong group, and odorant-Voronovo polymer, having hydroc-strong group (Krat-of)The conditions of manufacture of the second coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water solvent is considered as poly-measure, which is hydroc-strong group (Krat-of)
The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Rome�th polymer, not having a hydroxyl groupThe substance boric acid (part)The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Remy polymer not having the hydroxyl groupThe substance boric acid (part)
The substance of an aqueous solution of polymer A1 (part)TypeThe substance (part)The substance of an aqueous solution of polymer A1 (part)TypeThe substance (part)
Media 1110010B252250,200,5010010-01100,1035
Media in�ormatie 12 1005B2102250,402,0010010-01100,1035
Media 131005B2152250,403,0010010-01100,1035

5
Media 1410010B412250,200,10 10010-01100,1035
Media 1510010B432250,200,3010010-01100,1035
Media 1610010B452250,200,5010010-01100,1035
Media 17100B4102250,402,0010010-01100,1035
Media 181005B4152250,403,0010010-01100,1035
Media 1910010B312250,200,1010010-0 1100,1035
Media 2010010B332250,200,3010010-01100,1035

5
Table 1. (continued)
Room media informationFirst raskopanny layerSecond raskopanny layerThe total probability the thickness of the dye-receiving layer (μm)
The conditions of manufacture of the first coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water solution. imago poly-a measure that has a hydroxyl group (Krat-of) Mass ratio, making odorant-Voronovo polymer having no hydroc-strong group, and odorant-Voronovo polymer, having hydroc-strong group (Krat-of)The conditions of manufacture of the second coating liquid (relative to the solids content)Thickness (μm)Mass rela-the wearing of boric acid and water solvent is considered as poly-measure, which is hydroc-strong group (Krat-of)
The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Remy polymer not having the hydroxyl groupThe substance boric acid (part)The substance liquid disper-Sion of the inorganic-organic particles (part)Odorant-Vorony a polymer having hydroc-strong groupVocarstvo-Remy polymer not having the hydroxyl groupThe substance boric acid (part)
The substance of an aqueous solution of polymer A1 (part)The substance (part)The substance of an aqueous solution of polymer A1 (part)TypeThe substance (part)
Media 2110010B352250,200,5010010-01100,1035
Media 221005B3102250,402,0010010-01100,1035
Media 23100B3152250,403,0010010-01100,1035

Media 2410010B152250,200,510010B111100,1035
Media 2510010-02250,20010010 B151100,1035
The storage medium 2610010-02250,20010010B251100,1035
Media 2710010-02250,20010010B451100,1035
Media 2810010- 02250,20010010B351100,1035
Media 2910011-02250,18010010-01100,1035
Media 3010010B132250,200,3010010B15110 0,1035

Assessment

According to the present invention, estimates A-C to the evaluation criteria of each of the estimated parameters, described below, were considered as the preferred level, and grades D and E in the evaluation criteria considered as an unacceptable level. When the image recorded on the recording medium for each of the studies described below, the printing was performed using Crassostrea printing device PIXUS Pro9000 Mark II (CANON KABUSHIKI KAISHA), which was installed ink cartridge BCI-7e (CANON KABUSHIKI KAISHA). With regard to the printing conditions, printing is carried out at a temperature of 23°C and 50% relative humidity. In the above-mentioned crassostreae a printing device, the image printed on the condition that approximately 22 ng of ink applied per unit area with the size of 1/600 inch × 1/600 inch (42,3 × 42,3 µm) at a resolution of 600 dpi × 600 dpi, defined as having intensity print, component 100%.

Evaluation of optical density of the image

Black solid image having an intensity print, component 100%, printed on each media, made as above, using Crassostrea printing device. The optical density of image was measured with a spectrophotometer Spectrolino (prod�the first Gretag Macbeth). Assessment criteria are given below. The results of the evaluation are presented in table 2.

A: the Optical density was 2.3 or more.

B: the Optical density was 2.2 or more and less than 2.3.

C: the Optical density was 2.1 or more and less than 2.2.

D: the Optical density was 2.0 or more and less than 2.1.

E: the Optical density was less than 2.0.

Evaluation of moisture resistance of an image

The image with second color (blue), formed from blue and purple, and the image included contour of the letter "A" (which was not spent paint) with font sizes of 10 points and 48 points, printed on each of the media produced as described above, using Crassostrea printing device. In this print the print intensity of blue colour was 100%, and the intensity of the printing Magenta color was 100%. The resulting image was kept in a high moisture environment at a relative humidity of 90% and a temperature of 30°C for 25 days. The moisture resistance of the image was evaluated by visually observing the contour portion of the image. Assessment criteria are given below. The results of the evaluation are presented in table 2.

A: nowhere in the letter size is 10 points and the letter size of 48 points was not noticeable leaching of paint on the outline part of a character.

B: letter a size of 48 points was not noticeable leaching of paint on the outline part of a character. In the letter size of 10 points was present slightly noticeable leaching of paint on the outline part of a character, but this leaching remained at low levels.

C: In each letter size is 10 points and the letter size of the 48 items were present slightly noticeable leaching of paint on the outline part of a character, but this leaching remained at low levels.

D: letter a size of 48 points was present slightly noticeable leaching, the leaching of paint on the outline part of a character. In the letter size of 10 points was attended by a noticeable erosion of the paint on the outline part of a character, and part of the letter was illegible.

E: In each letter size is 10 points and the letter size of 48 points was attended by a significant leaching of the paint on the outline part of a character, and part of the letter was illegible.

Assessment Krasnopolsky

Five green solid image in which the intensity of the print was 150%, 200%, 250%, 300% and 350%, printed on the media using Crassostrea printing device. In this print the print intensity of blue color and the intensity of the print yellow colors were the same, so the sum of those values of the print density were equal to the above values of the print density. For example, in a green solid image printing intensity was 350%, intensives�ü print blue color was 175%, and the intensity of the print yellow was 175%. Krasnopolye been evaluated by visually observing the occurrence or absence of the phenomenon of foaming of the paint on the images. The term "foaming phenomenon paint" means a phenomenon in which droplets of ink absorbed by the media, to connect with each other. As is known, the phenomenon of foaming of the paint to a high degree connected with krasnopoliana. When the phenomenon of foaming of the paint does not occur in the image having a high intensity of the print is determined that Krasnopolye is high. Assessment criteria are given below. The results of the evaluation are presented in table 2.

A: the phenomenon of foaming paint did not arise in the image whose printing intensity was 350%.

B: the phenomenon of foaming of the paint occurred in the image whose printing intensity was 350%, but did not occur in the image whose printing intensity was 300%.

C: the phenomenon of foaming of the paint occurred in the image whose printing intensity was 300%, but did not occur in the image whose printing intensity was 250%.

D: the phenomenon of foaming of the paint occurred in the image whose printing intensity was 250%, but did not occur in the image whose printing intensity was 200%.

Evaluation of resistance to scratching during transmission

The above Crassostrea printing device is modified so that the pressure of the transfer roller can be adjusted in the range from 1.7 to 2.2 kg (16,67 to 21.57 N). Black solid image printing intensity was 100%, printed on the entire surface of the information carrier, using Crassostrea printing device. Resistance to scratching during transmission of the information carrier was evaluated visually by observing after printing, the presence or absence of scratches caused during transmission produced by the transfer roller on the media. Assessment criteria are given below. The results of the evaluation are presented in table 2.

A: Scratching in the transmission was not observed, even when the pressure of the transfer roller was 2.2 kgf (21,57 M).

B: Scratching in the transmission was not observed, when the pressure of the transfer roller was 2.0 kgf (19,61 N). However, the scratching in the transmission was observed when the pressure of the transfer roller was 2.2 kgf (21,57 M).

C: Scratching in the transmission was not observed, when the pressure of the transfer roller was 1.8 kg (17,65 M). However, the scratching in the transmission was observed when the pressure of the transfer roller was 2.0 kgf (19,61 N).

D: Scratching for ne�edache was not observed, when the pressure of the transfer roller was 1.7 kg (16,67 M). However, the scratching in the transmission was observed when the pressure of the transfer roller was 1.8 kg (17,65 M).

E: Scratching in the transmission was observed, even when the pressure of the transfer roller was 1.7 kg (16,67 M).

Table 2.
The results of the evaluation
ExampleRoom mediaThe optical density of the imageThe moisture resistance of an imageKrasnopolyeResistance to scratching when passing
Example 1The recording medium 1AInAndIn
Example 2Media 2AAAndAnd
Example 3Media 3AAAnd And
Example 4Media 4AAAndAnd
Example 5Media 5AAAnd
Example 6Media 6AAAndAnd
Example 7Media 7AAAndAnd
Example 8Media 8AAAnd
Example 9The information carrier 9AInIn
Example 10The storage medium 10 AInInIn
Example 11Media 11AInInAnd
Example 12Media 12AInInIn
Example 13Media 13AAnd
Example 14Media 14AIninIn
Example 15Media 15AAndinAnd
Example 16Media 16AAndAndAnd
Example 17Media 17AAndAndAnd
Example 18Media 18AAndAnd
Example 19Media 19AIn

td align="center"> Media 23 D
Example 20Media 20AInInIn
Example 21Media 21ABInA
Example 22Media 22AInInA
Example 23AACA
Example 24Media 24CCInA
Comparative example 1Media 25DDEB
Comparative example 2The storage medium 26DEEC
Comparative example 3Media 27DDEB
Comparative example 4Media 28DDED
Comparative example 5Media 29CCE
Comparative example 6Media 30BEEA

Although the present invention is described in relation to exemplary embodiments, it should be understood that the present invention is not limited to the described exemplary embodiments of the implementation. Scope of the following claims should be considered in the broadest interpretation so as to include all appropriate modifications and equivalent structures and functions.

1. The storage media that contains:
substrate
first raskopanny layer and
second raskopanny layer in this order
the first raskopanny layer includes an inorganic particle, a water-soluble polymer having a hydroxyl group, a water-soluble polymer not having the hydroxyl group, and a mixture of boric acid, and
second raskopanny layer includes inorganic particles, a water-soluble polymer having a hydroxyl group, and a mixture of boric acid, and satisfies the following condition (1) or (2):
the condition (1): the second raskopanny layer in �you water-soluble polymer, not having a hydroxyl group;
the condition (2): the second raskopanny layer includes a water-soluble polymer not having the hydroxyl group, but the content of water-soluble polymer not having the hydroxyl group relating to the content of inorganic particles in the second krasoprema layer is less than the content of water-soluble polymer not having the hydroxyl group relating to the content of inorganic particles in the first krasoprema layer.

2. Information carrier according to claim 1, wherein krasoprema layer, a mass ratio of the content of water-soluble polymer having a hydroxyl group, and the content of inorganic particles is 5.0 wt.% or more and 17.0 wt.% or less.

3. Information carrier according to claim 1, wherein krasoprema layer, a mass ratio of the content of water-soluble polymer not having the hydroxyl group and the content of inorganic particles is 1.0 wt.% or more and 15.0 wt.% or less.

4. Information carrier according to claim 1, wherein krasoprema layer (mass%) content of water-soluble polymer not having the hydroxyl group is 0.1-fold or more and 3.0 times or less (weight percent) content of water-soluble polymer having a hydroxyl group, relative to mass ratio.

5. Wear�spruce information according to claim 1, in which the water-soluble polymer having a hydroxyl group, a represents at least one polymer selected from polyvinyl alcohol and derivatives of polyvinyl alcohol.

6. Information carrier according to claim 1, wherein the water-soluble polymer not having a hydroxyl group, a represents at least one polymer selected from polyvinylpyrrolidone, polyacrylic acid, poly (methacrylic acid), polyethylene oxide and polyacrylamide.

7. Information carrier according to claim 1, wherein the water-soluble polymer having hydroxyl group has a hydroxyl number of 500 mg KOH/g or more, and a water-soluble polymer not having the hydroxyl group has a hydroxyl number of 50 mg KOH/g or less.

8. Information carrier according to claim 1, wherein the inorganic particle comprises at least one kind of particles selected from hydrated aluminum oxide, aluminum oxide and silicon dioxide.



 

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4 cl, 7 ex

FIELD: polygraphy.

SUBSTANCE: one invention from a group is related to printing base, being a substrate with oleophilic surface, having Gurley-Hill porosity value greater than 5000s/100ml, while printing paint, imprinted on such base, has offset value of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units. Another invention is related to printing method, which is performed in at least one printing section with use of substrate, having oleophilic surface and being not porous with Gurley-Hill porosity value over 5000s/100ml, and carrier of pigment of printing paint, having value of offset of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units.

EFFECT: improved quality of printing, improved quality of folding, decreased static electricity.

2 cl, 6 dwg, 3 tbl

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

EFFECT: improved manufacturability of process.

5 cl, 1 tbl, 54 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.

EFFECT: enabled image quality and paper surface strength control.

3 cl, 1 tbl, 13 ex

FIELD: method and device for colored flexography.

SUBSTANCE: method for applying multiple paint layers onto a substrate includes following stages: application onto a substrate of at least one painting layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and including reaction-incapable paint thinner, where applied layer of energy-hardened paint has first viscosity; evaporation of at least a part of reaction-incapable paint thinner from applied paint layer for increasing viscosity of applied layer of energy-hardened paint; application onto substrate and applied layer of energy-hardened paint with increased viscosity of at least one layer of non energy-hardened liquid paint, viscosity of which is less than increased viscosity of previously applied layer of energy-hardened paint; and drying of both paint layers on the substrate. Another variant of method for applying multiple paint layers onto a substrate is differentiated by applied layer of energy-hardened paint having to be of increased viscosity compared to following layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and containing reaction-incapable paint thinner, where viscosity of following layer is less than increased viscosity of energy-hardened paint layer applied beforehand. Also a method is suggested for printing multiple paint layers on a substrate, which includes stage of selection of first and second energy-hardened liquid flexography paint, where each paint contains viscosity controlling reaction-incapable paint thinner, consisting of water in amount of from 5% to 50% of thinner weight, where each paint has viscosity approximately ranging from 30 to 70 centipoises, and stage of serial application of first and second energy-hardened liquid flexography paint onto a substrate to create first and second paint layers, having overlapping parts, where second paint is applied only after at least a part of paint thinner is evaporated in first paint layer. Device for serial application of multiple overlapping paint layers onto a substrate contains substrate route and substrate drive for moving the substrate along a route, where paint application sections are adapted for applying paint onto substrate, which paint includes reaction-incapable paint thinner and has viscosity less than 4000 centipoises, and also management system, which manages transportation of substrate along a route. Viscosity of first layer of liquid paint, applied onto a substrate in one of paint sections, is increased due to evaporation of at least a part of paint thinner from first paint layer to higher viscosity compared to viscosity of second paint, applied on top of first paint layer in next paint section, located at a certain distance from first paint section, up to viscosity, sufficient for "crude" application of second liquid paint layer during transportation of substrate between paint sections.

EFFECT: in suggested methods, relief printing is achieved without insignificant modifications of printing equipment.

4 cl, 2 dwg

FIELD: printing materials.

SUBSTANCE: invention relates to printing ink containing first colorant and second colorant, at least one of the colorants including fluorescent color. First and second colorants are located separately on a printing medium while printing ink ensure obtaining printed image with improved fluorescent properties. Invention further relates to printed image and a method of forming printed image utilizing such ink. Invention solves the problem of reducing fluorescence and improving fluorescent properties by way of separating fluorescence region and colored region as well as by way of formation of area on printing medium wherein points of coagulated first colorant are spread in the region of fixed second colorant so that absorption of fluorescent emission energy from fluorescent colorant is considerably reduced by coexisting colorant involving corresponding technologies. The latter are based on a novel technical conception residing in improvement of characteristics of fluorescent emission of a second colorant used in printing ink including a first fluorescent colorant, which, being excited at specified excitation wavelength, fluoresces within specified wavelength range.

EFFECT: improved fluorescent properties of printed image.

15 cl, 31 dwg, 4 tbl, 33 ex

FIELD: polymer coatings.

SUBSTANCE: invention relates to using powder composition to coat jet printing materials utilized as visual information carriers. Powder composition contains (i) one or several powder silane-containing polyvinyl alcohols based on copolymers of fully or partially hydrolyzed esters having degree of hydrolysis from 75 to 100 mol % and (ii) one or several water re-dispersible polymer powders based on homopolymers or copolymers of one or several monomers selected from group including nonbranched or branched C1-C15-alkylcarboxylic acid vinyl esters, (meth)acrylic acid esters with C1-C15-alcohols, vinylaromatic compounds, olefins, dienes, and vinyl halides.

EFFECT: enabled manufacture of wear-resistant coatings to coat both paper and polymeric substrates, avoided undesired increase in viscosity during composition preparation procedure, and enabled more flexible variation in contents of solids in chalking mass.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention pertains to ink for an ink-jet printer. Description is given of the ink for an ink-jet printer, containing 62-77 mass % water, 10-18 mass % dye, X (%), water soluble organic substance 1 and 2.0-15 mass %, Y (%), water soluble organic substance 2. Viscosity of the ink ranges from 1 to 5 cP at 25°C, content X (%) of substance 1 and content Y (%) of substance 2 satisfies the relationship in formula (I) and formula (II): (I) 0.15 ≤ Y/X ≤ 0.9; (II) 15 mass % ≤ X+ Y ≤ 32 mass %. Compound 1 is a water-retaining water soluble organic compound, with difference between the water-retention capacity in a surrounding medium at 23°C and humidity of 45% and water-retention capacity in a surrounding medium at 30°C and 80% humidity at 36% or less. Compound 2 is a water soluble organic compound, different from the dye and from the water soluble organic compound 1.

EFFECT: proposed ink sufficiently suppresses the effect of twisting printing material and provides for stable injection.

26 cl, 6 dwg, 6 tbl, 21 ex

FIELD: polygraphy.

SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.

EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.

18 cl, 1 tbl, 10 ex

FIELD: polygraphy.

SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.

EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.

18 cl, 1 tbl, 10 ex

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