JPH06143798A - Recording sheet - Google Patents

Abstract

PURPOSE:To provide a recording sheet which has favorable ink absorption and image quality and is superior in water resistance. CONSTITUTION:In a recording sheet having a recording layer which is obtained by laminating in order of a dye fixing layer and dye permeation and ink absorption layer on at least one side of a plastic film, the dye fixing layer consists mainly of quaternary ammonium salt polymer and cation-modified vinyl alcohol and the dye permeation and ink absorption layer consists mainly of a polymer having an anionic group or its neural salt and water-soluble polymer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording sheet, more specifically, an ink jet printer having a high image density, a clear image color tone, excellent ink absorbability, water resistance and abrasion resistance. For recording sheet.

[0002]

2. Description of the Related Art In recent years, due to the widespread use of OA, the demand for creating and recording documents in an office is increasing, and a printer with low noise and excellent image quality is required. An inkjet printer has been put into practical use as one of the printers that meet these requirements. Inkjet printers use ink that is difficult to dry to prevent nozzle clogging, and the components of this ink are generally those in which a binder, dye, solvent, additive, etc. are dissolved in water. Therefore, it is necessary to use a recording sheet having a high water absorption property, and a special paper having a good ink absorption property is usually used.

[0003]

On the other hand, when a sheet having a low ink absorbency is used, the ink may be insufficiently dried or may not be dried at all, and if it is rubbed with a finger or overlapped, it is recorded. The part is dirty and practically unusable.

In order to improve these points and improve the ink absorbency of the substrate, for example, polyvinyl alcohol, starch, gelatin, cellulose derivatives such as hydroxyethyl cellulose and methyl cellulose, polyacrylic acid, polymethacrylic acid and the like. It has been proposed to provide a water-soluble polymer recording layer such as salts, but even if the conventional recording layer satisfies the ink absorbency, the water resistance is poor and the recording layer and recording part dissolve in water. However, there is a problem that the recorded image disappears, the surface becomes sticky and the recorded image bleeds, or blocking occurs when the sheets are laminated. The present invention solves these problems,
It is an object of the present invention to provide a recording sheet having excellent ink absorbability, dye fixing property and water resistance.

[0005]

The recording sheet of the present invention for this purpose is a recording sheet comprising a plastic film and a recording layer having a dye fixing layer and a dye transmitting / ink absorbing layer sequentially laminated on at least one surface of the plastic film. , The dye fixing layer is mainly composed of a quaternary ammonium salt polymer and cation-modified polyvinyl alcohol, and the dye permeation / ink absorbing layer is mainly composed of a polymer having an anionic group or its neutralizing salt functional group and a water-soluble polymer. It is characterized as an ingredient.

The material of the plastic film in the present invention includes polyester, polyolefin, polyamide, polyesteramide, polyether, polyimide,
Polyamide imide, polystyrene, polycarbonate,
Poly-P-phenylene sulfide, polyether ester, polyvinyl chloride and poly (meth) acrylic acid ester are preferred. Moreover, these copolymers, blends, and further crosslinked products can be used.

Further, among the above plastic films, polyester, preferably polyethylene terephthalate, is preferable from the viewpoint of mechanical properties and workability.

The polyester in the present invention is a well-known one, for example, terephthalic acid, isophthalic acid, naphthalene dicarboxylic acid, bis-α, β (2-chlorophenoxy) ethane 4,4'-dicarboxylic acid, At least one of bifunctional carboxylic acids such as adipic acid and sebacic acid
Seeds, ethylene glycol, triethylene glycol,
A polyester obtained by polycondensation with at least one kind of glycol such as tetramethylene glycol, hexamethylene glycol, decamethylene glycol and the like can be mentioned. Further, the polyester may be blended or copolymerized with another polymer within a range not impairing the object of the present invention, and may include an antioxidant, a heat stabilizer, a lubricant, a pigment, an ultraviolet absorber and the like. It may be. The intrinsic viscosity of the polyester (measured in 25 ° C. orthochlorophenol) is 0.4 to 2.0, preferably 0.5 to 1.
Those in the range of 0 are usually used.

As the polyester film used in the present invention, it is possible to use a film in which fine bubbles are contained in the film, and the bubbles are whitened by scattering light. The formation of the fine bubbles is caused by the formation of an incompatible polymer such as poly-3-methylbutene-1, poly-4-methylpentene-1, polypropylene, polyvinyl-t-butane in a film base material such as polyester.
It is formed by finely dispersing 1,4-trans-poly-2,3-dimethylbutadiene, cellulose triacetate, cellulose tripropionate, polychlorotrifluoroethylene, etc., and stretching it uniaxially or biaxially. During stretching, voids (air bubbles) are formed around the incompatible polymer particles, and these exhibit white light scattering effect. Further, since it has fine bubbles, it has a low specific gravity and also has cushioning properties.

Further, in the present invention, it is possible to use a polyester film in which fine particles such as calcium carbonate, amorphous zeolite particles, anatase type titanium dioxide, calcium phosphate, silica, kaolin, talc and clay are used in combination. In addition to such fine particles, fine particles deposited by the reaction of the catalyst residue and the phosphorus compound in the polyester polymerization reaction system may be used in combination.

In the recording sheet of the present invention, a dye fixing layer and a dye transmitting / ink absorbing layer are provided on at least one side of the plastic film.

The dye fixing layer referred to in the present invention is a layer in which the dye in the water-based ink that has passed through the ink absorbing layer is firmly fixed on the surface and inside, and a recorded image is obtained even if the recording sheet after recording is rubbed. It does not cause inconvenience such as disappearance.

The dye fixing layer in the present invention contains a quaternary ammonium salt polymer and a cation-modified polyvinyl alcohol as main components.

The quaternary ammonium salt polymer is a polymer having at least one quaternary ammonium salt in the repeating unit chain and, for example, poly (2-hydroxy-3-methacryloxypropyltrimethylammonium). Chloride), poly (2-hydroxy-3-methacryloxypropyltriethylammonium chloride), poly (2-hydroxy-3-acryloxypropyltrimethylammonium chloride), poly (2-hydroxy3)
-Acryloxypropyltriethylammonium chloride), poly (2-methacryloxyethyltrimethylammonium chloride), poly (2-methacryloxyethyltriethylammonium chloride), poly (2-
Acryloxyethyltrimethylammonium chloride), poly (2-acryloxyethyltriethylammonium chloride), poly (vinylbenzyltrimethylammonium chloride), poly (dimethylaminoethylmethacrylate) salt, poly (diethylaminoethylmethacrylate) ) Salt, poly (dimethylaminoethyl acrylate) salt, poly (diethylaminoethyl acrylate) salt, poly (vinylbenzyltriethylammonium chloride), poly (4-vinylN-methylpyridinium chloride), N, N-dimethyl substituted 3 , 5-methylpiperidinium chloride resin, poly (dimethyldiallylammonium chloride), poly (diethyldiallylammonium chloride), polyethyleneimine hydrochloride, etc. And Handbook of Surfactants (Sangyo Tosho 1
960), various polymers of quaternary ammonium salts and piperidinium salts are available, and other known polymers having various quaternary ammonium salts can be used.

In particular, poly (2-hydroxy-3-methacryloxypropyltrimethylammonium chloride),
Poly (2-hydroxy-3-methacryloxypropyltriethylammonium chloride), poly (2-hydroxy-3-acryloxypropyltrimethylammonium chloride), poly (2-hydroxy-3-acryloxypropyltriethylammonium chloride), poly (2
-Methacryloxyethyltrimethylammonium chloride), poly (2-methacryloxyethyltriethylammonium chloride), poly (2-acryloxyethyltrimethylammonium chloride), poly (2-acryloxyethyltriethylammonium chloride), poly (dimethylaminoethyl) Methacrylate) salt, poly (diethylaminoethylmethacrylate) salt, poly (dimethylaminoethylacrylate) salt,
A salt of poly (diethylaminoethyl acrylate) is the preferred polymer.

The quaternary ammonium salt polymer may be used alone or in a mixture of two or more kinds. Furthermore, the fourth
It may be a copolymer of a quaternary ammonium salt and styrene or an acrylic acid ester. The acrylic acid-based ester as used herein refers to an acrylic acid ester and a methacrylic acid ester, and is preferably an ester of an aliphatic alcohol. Examples thereof include methyl acrylate, ethyl acrylate, butyl acrylate, propyl acrylate, 2-hydroxyethyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, propyl methacrylate and 2-hydroxyethyl methacrylate.

Specific examples of the quaternary ammonium salt polymer used in the present invention include "Saftomer" (manufactured by Mitsubishi Yuka Co., Ltd.) and "Elecond" (Soken Chemical Co., Ltd.).
Made), “Chemist” (made by Sanyo Kasei Co., Ltd.), “Colcoat” (made by Colcoat), “SAT-5” (made by Nippon Pure Chemical Co., Ltd.), “Dow ECR” (made by Dow Chemical)
However, the present invention is not limited to this.

The cation-modified polyvinyl alcohol is
A polyvinyl alcohol having a cationic group in its main chain or side chain. Generally, it can be obtained by saponifying a copolymer of an ethylenically unsaturated monomer having a cationic group and vinyl acetate. .

The cation-modified polyvinyl alcohol preferably used in the present invention is vinyloxyethyltrimethylammonium chloride, trimethyl- (3-acrylamido-3,3-dimethylpropyl) ammonium chloride, trimethyl- (2-acrylamido-2,2). −
Dimethylethyl) ammonium chloride, trimethyl- (3-methacrylamidopropyl) ammonium chloride, N- (1,1-dimethyl-3-dimethylaminopropyl) acrylamide, N- (3-dimethylaminopropyl) methacrylamide, N-vinyl A copolymer obtained by copolymerizing vinyl acetate and an ethylenically unsaturated monomer having a cationic group such as quaternary ammonium salt group such as imidazole, N-vinyl-N-methylimidazole and quaternary compounds thereof, is obtained. It can be obtained by saponification by a conventional method.

The content of the cationic group unit in the cation-modified polyvinyl alcohol is preferably 0.1 to 10 mol%.

The degree of saponification of the vinyl acetate unit of the cation-modified polyvinyl alcohol depends on the content of the cationic group and should be selected depending on the use of the recording sheet, but is usually 50 to 100 mol%, preferably 70 to 99. It is selected from the range of mol%.

The degree of polymerization of the cation-modified polyvinyl alcohol is not particularly limited and may be appropriately selected depending on the intended purpose, but is usually in the range of 500 to 3000.

The quaternary ammonium salt compound and the cation-modified polyvinyl alcohol have a quaternary ammonium salt polymer / cation-modified polyvinyl alcohol weight ratio of 1 /.
It is selected from the range of 4 to 4/1, preferably 1/3 to 3/1, and more preferably 1/2 to 2/1. 1 quaternary ammonium salt polymer / cation-modified polyvinyl alcohol
If it is less than / 4, the water resistance of the recording layer formed is poor, and it is 4/1.
If it exceeds, the compatibility of the mixed solution becomes poor, which is not preferable.

In the dye-fixing layer of the present invention, a water-soluble polymer, a water-dispersible polymer or other polymer resin may be added, if necessary, within a range not impairing the dye-fixing property aimed at by the present invention.
Organic particles and inorganic particles may be added. The coating thickness of the dye fixing layer is not particularly limited, but is 0.1 to 20 μm, preferably 0.5 to 10 μm. If it is thinner than this range, the dye fixability is inferior, and if it is thicker than this range, the workability becomes poor and blocking is likely to occur.

In the recording sheet of the present invention, it is necessary to further provide a dye transmitting / ink absorbing layer on the dye fixing layer.

The dye-permeable / ink-absorbing layer of the present invention contains a polymer having an anionic group or a neutralizing salt functional group thereof and a water-soluble polymer as main components.

The anionic group used in the present invention is a sulfonic acid group, a carboxyl group, a sulfuric acid ester group, a phosphoric acid ester group or the like.

The anionic group preferably used in the present invention is a sulfonic acid group, and examples of the polymerizable monomer having a sulfonic acid group include styrene sulfonic acid, ethylene sulfonic acid and allyl sulfonic acid. For example, olefin sulfonic acid. The polymerizable monomer having an anionic group may be used alone or in a mixture of two or more kinds, and may be a copolymer with a hydrophobic polymerizable monomer.

Examples of the hydrophobic monomer include styrene, maleic anhydride, acrylic acid ester and the like. The acrylic acid ester as used herein means acrylic acid ester and methacrylic acid ester, and is preferably It is an ester of an aliphatic alcohol. For example, methyl acrylate, ethyl acrylate, butyl acrylate, propyl acrylate, 2-hydroxyethyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, propyl methacrylate,
2-hydroxyethyl methacrylate etc. are mentioned.

Further, the anionic group-containing polymer may be neutralized with a base such as alkali, ammonia or amine to partially or entirely neutralize the anionic group. Examples of the base include lithium hydroxide and hydroxide. Alkali hydroxides such as sodium and potassium hydroxide, ammonia, primary amines such as ethylamine, secondary amines such as diethylamine, triethylamine, dimethylethanolamine,
There are tertiary amines such as triethanolamine.

The content of the anionic group or its neutralizing salt functional group in the polymer having the anionic group or its neutralizing salt functional group is 0.1 to 30 mol%, preferably 1 to 10 mol%.
It is selected from the range of mol%. When it is 0.1 mol% or less, the dye permeability becomes insufficient, and when it is 30 mol% or more, the water resistance of the recording layer formed is deteriorated, which is not preferable.

The water-soluble polymer in the present invention refers to a polymer which is soluble in water at room temperature, and examples thereof include starches such as oxidized starch, etherified starch, dextrin, and cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose. Vinyl polymers such as casein, gelatin, polyvinyl alcohol and derivatives thereof, polyvinylpyrrolidone, polyacrylic acid, polymethacrylic acid or esters thereof, salts and copolymers thereof, polyhydroxyethyl methacrylate and copolymers thereof, or the like. Polymers modified with functional groups such as carboxyl groups of various polymers can be preferably used, but are not limited thereto.

The polymer having an anionic group or its neutralizing salt functional group and the water-soluble polymer have a weight ratio of the polymer having an anionic group or its neutralizing salt functional group / water-soluble polymer.
/ 4 to 4/1 is preferable, and more preferably 1/3 to 3 /
1, more preferably 1/2 to 2/1. If the amount of the polymer / water-soluble polymer having an anionic group or its neutralizing salt functional group is less than 1/4, the dye permeability of the recording layer formed is insufficient or the water resistance is poor and exceeds 4/1. In this case, the compatibility of the mixed solution becomes poor, which is not preferable.

In the present invention, inorganic or organic particles may be dispersed in the dye permeable / ink absorbing layer in order to further enhance the recording characteristics of the dye permeable / ink absorbing layer. Examples of the inorganic particles include silica, clay, talc, diatomaceous earth, calcium carbonate, barium sulfate, aluminum silicate, synthetic zeolite, alumina, zinc oxide, and mica. As the organic particles, for example, polymethylmethacrylate, polystyrene, copolymers thereof, polyvinyl chloride, polyethylene, polypropylene, polyvinylidene chloride, plastic pigments such as polycarbonate can be preferably used, but are not limited thereto. is not.

The coating thickness of the dye transmitting / ink absorbing layer is not particularly limited, but is 0.5 to 20 μm, preferably 1 to 1
It is 0 μm. If it is thinner than this, the ink absorbency is poor or blocking is likely to occur, and if it is thicker than this, workability is deteriorated, which is not preferable. In the present invention, in the dye fixing layer and the dye transmitting / ink absorbing layer, known additives such as a defoaming agent, a coating property improving agent, a thickening agent, an antistatic agent, and an antioxidant are used within a range that does not impair the characteristics of the present invention. , An anti-UV agent, a dye, etc. may be contained.

In the present invention, the running property of the recording sheet,
It is desirable to apply the quaternary ammonium salt or another antistatic agent or a coating agent containing inorganic or organic fine particles to the plastic surface opposite to the recording layer in order to improve the double running property.

The method for applying the dye fixing layer and the dye transmitting / ink absorbing layer is not particularly limited, but a gravure coating method,
Known methods such as a reverse coating method, a kiss coating method, a die coating method and a bar coating method can be applied. At this time, not only the coatability is improved by applying a known surface treatment such as a corona discharge treatment in air or other atmospheres or a primer treatment on the film as needed before coating. The recording layer can be more firmly formed on the film. The coating agent concentration and the coating film drying conditions are not particularly limited, but it is desirable that the coating film drying conditions be performed within a range that does not adversely affect various characteristics of the substrate.

The recording sheet of the present invention can be used as a sheet for an overhead projector by using a transparent plastic film as a base material.

[0039]

[Measurement Method of Physical Properties and Evaluation Method of Effect] The measurement method of various characteristics in the present invention will be described.

(1) Recordability Personal computer made by NEC Corporation-98not
Canon Inc. bubble jet printer BJC
-82OJ was connected, a character pattern was inkjet-recorded, image quality and ink absorbency were evaluated, and the printability was judged as follows. The image quality was evaluated by visual observation with a magnifying glass, and the ink absorbency was measured with a finger on the recorded portion immediately after recording.
It was rubbed and evaluated by the degree of contamination of the recording layer with ink.

Image quality ◎: Very good (dots are uniform and clear) ○: Good Δ: Slightly inferior ×: Dot flow, repelling, bleeding, etc.

Ink absorbency ⊚: Very good (no stain on recording layer) ◯: Good Δ: Slightly inferior ×: Ink is removed and the recording layer is stained

(2) Water resistance of recording layer: Water was applied to a cotton swab and the recording layer was lightly rubbed for evaluation.

⊚: Good (no loss of recording part even after rubbing 20 times) ◯: Slightly good (dropping of recording part after rubbing 10 to 20 times) ×: Poor (falling off after less than 10 times)

[0045]

EXAMPLES The present invention will be described based on examples.

Example 1 (1) Preparation of Dye Fixing Layer Coating Agent 2-Hydroxy-3-methacryloxypropyltrimethylammonium chloride and 2-hydroxyethyl acrylate were polymerized by a conventional radical polymerization method to obtain a quaternary ammonium salt. A polymer was prepared. Then trimethyl-3-
The copolymer obtained by copolymerizing methacrylamidopropyl) ammonium chloride and vinyl acetate and saponifying the resulting copolymer by a conventional method has a content of the monomer unit having a cationic group of 3 mol% and a saponification degree of the vinyl acetate unit of 88. Mol%,
A cation-modified polyvinyl alcohol having a degree of polymerization of 1750 was prepared. The quaternary ammonium salt polymer and the cation-modified polyvinyl alcohol were dissolved in a water-methyl alcohol solvent so that the solid content ratio was 1/1, and the solid content was 10%.
And the paint.

(2) Production of Dye Permeation / Ink Absorption Layer Coating Material Methyl acrylate and styrene sulfonic acid were polymerized by a conventional method to prepare a polymer having an anionic group. Anionic group-containing polymer and saponification degree 98 mol%, polymerization degree 18
Polyvinyl alcohol of 00, polyvinyl pyrrolidone (“LUBISCOL” K-90 manufactured by BASF) and polyethylene glycol (polyethylene glycol # 6000 manufactured by Nacalai Co., Ltd.) are mixed so that the solid content ratio becomes 6/5/1/1. And 1 part of polymethacryl fine particles (average particle diameter 8 μm, manufactured by Sekisui Kasei Co., Ltd.) in a solid content ratio were added to obtain a coating material having a solid content of 5%.

(3) Production of recording sheet A homopolymer chip of polyethylene terephthalate produced by a conventional method (intrinsic viscosity: 0.62, melting point: 25)
(9 ° C.) to obtain a 75 μm biaxially stretched polyester film by a conventional method. Corona discharge treatment was performed on the polyester film thus obtained. Next, the dye fixing layer coating composition (1) was applied on the corona discharge treated surface by a gravure coater so that the thickness after drying was 8 μm, and dried at 120 ° C. for 5 minutes. Next, the dye permeation / ink absorption layer coating composition (2) above is applied as a dye permeation / ink absorption layer by a gravure coater so that the thickness after drying becomes 3 μm, and dried at 130 ° C. for 1 minute, I got a recording sheet of. The characteristics of the recording sheet thus obtained are as shown in Table 1, which shows good image quality and good ink absorption.
The water resistance was also excellent. Further, when projected with an overhead projector, the image was clear and was good as a sheet for an overhead projector.

Example 2 In Example 1, as a dye fixing layer composition, a quaternary ammonium salt polymer ("Saftomer" ST manufactured by Mitsubishi Petrochemical Co., Ltd.) was used.
-2100) was used to obtain a recording sheet of the present invention in the same manner. The characteristics of the recording sheet thus obtained are shown in Table 1.
As shown in, the image quality and ink absorbency were good, and the water resistance was also excellent. Further, when projected with an overhead projector, the image was clear and was good as a sheet for an overhead projector.

Example 3 In Example 2, a cation-modified polyvinyl alcohol (PVA-C manufactured by Kuraray Co., Ltd.) was used as the dye fixing layer composition.
A recording sheet of the present invention was obtained in the same manner except that M-318) was used. The characteristics of the recording sheet thus obtained are shown in Table 1.
As shown in, the image quality and ink absorbency were good, and the water resistance was also excellent. Further, when projected with an overhead projector, the image was clear and was good as a sheet for an overhead projector.

Example 4 In Example 1, as a dye permeation / ink absorbing layer composition, an anionic group-containing polymer (“Chemist” 6120 manufactured by Sanyo Kasei Co., Ltd.), polyvinyl alcohol (PVA-produced by Electrochemical Co., Ltd.) A recording sheet of the present invention was obtained in the same manner except that W-24) was used. The properties of the recording sheet thus obtained are as shown in Table 1, and the image quality and ink absorbency were good, and the water resistance was also excellent. Further, when projected with an overhead projector, the image was clear and was good as a sheet for an overhead projector.

Example 5 In Example 3, as a dye permeation / ink absorbing layer composition, an anionic group-containing polymer (“Chemist” 6120 manufactured by Sanyo Kasei Co., Ltd.), polyvinyl alcohol (PVA-produced by Electrochemical Co., Ltd.) W-24) was used to obtain a recording sheet of the present invention in the same manner except that polystyrene fine particles (manufactured by Sekisui Kasei Co., Ltd., average particle diameter 8 μm) were added in an amount of 1 part in terms of solid content. The properties of the recording sheet thus obtained are as shown in Table 1, and the image quality and ink absorbency were good, and the water resistance was also excellent. Further, when projected with an overhead projector, the image was clear and was good as a sheet for an overhead projector.

Example 6 Polyethylene terephthalate chips and molecular weight 40
The master chip to which polyethylene glycol of 00 was added at the time of polymerization of polyethylene terephthalate was dried in vacuum at 180 ° C., and then mixed so that 89% by weight of polyethylene terephthalate, 1% by weight of polyethylene glycol and 10% by weight of polymethylpentene were mixed, 300
Feed to extruder B heated to ° C. Further, after drying polyethylene terephthalate containing 10% by weight of calcium carbonate having an average particle diameter of 1.0 μm as described above,
Supply to extruder A. Polymers extruded from the extruders A and B were laminated so as to have a three-layer structure of A / B / A, and formed into a sheet from a T die. Further, the unstretched film obtained by cooling and solidifying this film with a cooling drum having a surface temperature of 25 ° C. was guided to a roll group heated to 85 to 95 ° C., stretched 3.4 times in the longitudinal direction, and cooled by a roll group of 25 ° C. Subsequently, the longitudinally stretched film was guided to a tenter while holding both ends with clips, and stretched 3.6 times in the direction perpendicular to the longitudinal direction in an atmosphere heated to 130 ° C. Then 2 in the tenter
After heat fixing at 30 ° C., uniform cooling, cooling to room temperature and winding was performed to obtain a white film having a thickness of 100 μm and a specific gravity of 1.0. The laminated constitution of the film was 5/90/5 μm. A recording sheet of the present invention was obtained in the same manner by using the coating material of Example 5 on the polyester film obtained by the above method. The characteristics of the recording sheet thus obtained are as shown in Table 1, which shows good image quality and good ink absorption.
The water resistance was also excellent.

Comparative Example 1 In Example 1, the characteristics when the dye permeation / ink absorption layer was not coated are as shown in Table 1, and the image quality of the recording layer and the ink absorption were inferior.

Comparative Example 2 In Example 1, the characteristics when the dye fixing layer was not coated are as shown in Table 1, and the image quality and water resistance of the recording layer were poor.

[0056]

[Table 1]

[0057]

The recording sheet of the present invention is very excellent in water resistance, image quality and ink absorbability, and is preferably used in recording sheets for color and monochrome ink jet printers, offset printing, flexographic printing and the like. You can It can also be applied to overhead projector sheets, labels, and the like. Furthermore, the recording sheet of the present invention has excellent ink absorption,
It can be applied as other inks or toner receivers such as sublimation type thermal ink receivers, electrophotographic toner receivers, fabric ink receivers, etc. by utilizing the adhesiveness of the substrate.

Claims (3)

[Claims] 1. A recording sheet comprising a plastic film and a recording layer comprising a dye fixing layer and a dye transmitting / ink absorbing layer, which are sequentially laminated on at least one surface of the plastic film, wherein the dye fixing layer comprises a quaternary ammonium salt polymer. A recording sheet comprising a cation-modified polyvinyl alcohol as a main component, and the dye permeation / ink absorbing layer mainly comprises a polymer having an anionic group or a neutralizing salt functional group thereof and a water-soluble polymer. 2. The recording sheet according to claim 1, wherein the anionic group is a sulfonic acid group. 3. The recording sheet according to claim 1, wherein the polymer having an anionic group or a neutralizing salt functional group thereof is a styrene copolymer.