JPH0469285A - Material to be recorded of sublimation type thermal transfer recording apparatus - Google Patents

Abstract

PURPOSE:To prevent the surface gloss, rough feeling and antistatic properties of a recording image by bonding a film to one surface of plain paper and forming an antistatic layer to the surface of the film and further forming a dye receiving layer cured by active energy beam thereon. CONSTITUTION:One surface of a film 1 is bonded to plain paper 3 through an adhesive 5 and an antistatic layer 4 is provided to the other surface of the film 1 and a dye receiving layer 2 is formed on the antistatic layer 4 to obtain a material to be recorded. As the composition usable in the antistatic layer 4, for example, there is an anionic antistatic agent such as fatty acid salts, higher alcohol sulfate esters, aliphatic alcohol phosphoric esters or fatty acid amide sulfonates. By this method, the material to be recorded improved in the close adhesiveness of an image receiving layer, enhanced in background whiteness, excellent in antistatic properties, having no rough feeling of image quality, excellent in gloss after recording and reduced in curling after recording can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording medium used in a sublimation type thermal transfer recording system.

[Conventional technology]

The sublimation type thermal transfer recording method has the following characteristics: it is quiet, the device is small and inexpensive, it is easy to maintain, and the output time is short.In addition, because it uses sublimation type disperse dye, the amount of heat generated is low. In addition to being able to easily record high gradations by continuously changing the color, it also has features such as high density and high resolution.

Therefore, compared to other recording methods, this method is particularly advantageous in obtaining full-color hard copies, and is often adopted as a recording method for color printers, video printers, and the like.

Conventionally, the recording medium for this recording method is a material in which a recording layer is formed on a base material made of ordinary paper or synthetic paper (mainly polypropylene paper), as disclosed in U.S. Patent No. 4,778,782. has been used.

However, when polypropylene paper is used as a base material, it curls due to the heat of the thermal head after recording, the image after recording lacks gloss, the whiteness of the receiver paper is low, and the antistatic performance of the receiver paper is insufficient. However, there were drawbacks such as poor adhesion of the image-receiving layer.

[Problem to be solved by the invention]

An object of the present invention is to improve the above-mentioned drawbacks of the prior art, such as the whiteness of the image-receiving paper, the curling of the image-receiving paper after image recording, the surface gloss and roughness of the recorded image, and the antistatic property.

[Means to solve the problem]

This problem was solved by gluing a film onto one side of plain paper.
This is achieved by forming an antistatic layer on the film surface, and further forming a dye-receiving layer cured with active energy rays thereon.

Hereinafter, the present invention will be explained in detail using the drawings.

1 to 4 each show an embodiment of the recording medium of the present invention, and the reference numeral 1 in FIG. 1 is a film. One surface of this film 1 is adhered to plain paper 3 via an adhesive 5.

Further, an antistatic layer 4 is provided on the other surface of the film 1, and a dye receiving layer 2 is formed on this antistatic layer 4 to form a recording medium.

Further, in the example shown in FIG. 2, synthetic paper or a protective film 6 is adhered to the back surface of the plain paper 3 in the recording medium shown in FIG. 1 via an adhesive 5.

In the embodiment shown in FIG. 3, in the recording medium shown in FIG.
The antistatic layer 7 also has an easy-to-adhesive property that improves the adhesion to the surface.

Furthermore, in the example of the recording medium shown in FIG. 4, synthetic paper or a protective film 6 is adhered to the back surface of the plain paper 3 through an adhesive 5 in the recording medium shown in FIG. .

In the present invention, a material on which the uppermost dye-receiving layer 2 is not formed may be referred to as a base material, including these Examples. That is, a recording medium is composed of the base material and the dye-receiving layer 2 thereon.

The synthetic paper or protective film 6 is used to optimize the running properties of the recording medium in the printer, and also to prevent the generation of dust from the plain paper 3, and is suitable for these purposes. Any synthetic paper or protective film can be used, but a material with sufficient antistatic properties is preferable in consideration of the chargeability during running of the printer. An antistatic agent may be applied if necessary.

The dye-receiving layer 2 is characterized by being a cured product cured with active energy rays, and is therefore resistant to thermal, gutter pressure, heat, etc. during recording, and has high gloss retention on the image-receiving surface. By using the film 1 as in the present invention, the gloss retention property of the image plane after recording is further improved.

Plain paper 3 is 20 to 20, such as art paper, coated paper, etc.
0 μra (7) Il b can be used, but from the viewpoint of heat resistance, the thicker the better, and from the viewpoint of image quality, the smoother as possible is preferred.

As the adhesive layer 5, any adhesive commonly used for bonding general paper or film can be used, but an adhesive for dry lamination is preferable in consideration of ease of bonding, cost, etc.

Furthermore, in consideration of recorded image quality, the resin component used in the adhesive preferably has relatively high rubber elasticity, and the thickness of the adhesive layer is preferably 1 to 10 microns.

Examples of films include polyester film, polypropylene film, nylon film, vinyl chloride film, polyethylene film, etc. USP 4,318.950
A plastic film defined by the above is suitable, but a white film is preferable in consideration of the whiteness of the base, heat resistance,
Considering surface smoothness, white polyester film, etc.
For example, Diafoil W-300, W~900. IC
l1 Melinex 339. Merine Sox 329 Toshisha Lumirror E20. E60 etc. are preferable, and considering the rigidity, W-300, Melinenox 339, Melinex32
9 is preferable, and considering the image quality, Melinex 339
．． Melinex 329 is most preferred. If the thickness is too thin, unevenness on the surface of the plain paper 3 will affect the image quality after recording, and if it is too thick, the overall thickness of the recording medium will become thick, which is preferable.

Compositions that can be used in the antistatic layer 4 include anionic antistatic agents such as fatty acid salts, higher alcohol sulfate ester salts, fatty alcohol phosphate ester salts, fatty acid amide sulfonate salts, fatty amine salts, Cationic antistatic agents such as class ammonium salts and pyridine derivatives; polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, and polyoxyethylene sorbitan alkyl esters Nonionic antistatic agents; amphoteric antistatic agents such as alkyl betaines, alkylimidacillins, and alkylalanines; conductive resins such as polyvinylbenzyl cations and polyacrylic acid cations; It may also be a mixture of an antistatic agent and a binder polymer.

As the binder polymer, urethane-based, rubber-based, acrylic-based polymers, etc. can be used.

As the antistatic layer 7 having both easy adhesion and antistatic properties, pyridine derivatives (R, is an alkyl group, XI is a norogen) (Rt is an alkyl group, X is a halogen) (Ra, R- are an alkyl basis,
X is at least one antistatic agent selected from the group consisting of halogens, etc., and acrylic polymers formed by polymerizing methyl methacrylate and styrene, ethyl acrylate and methyl methacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, etc. It is preferable to use a mixture of at least one type of easily adhesive polymer. Furthermore, if necessary, other compounds may be added in order to optimize other properties of the film 1, such as slip properties, within a range that does not impair antistatic properties and easy adhesion properties.

The dye-receiving layer 2 cured with active energy rays is formed by coating a composition comprising a sublimable disperse dye-receptive resin, a crosslinking agent cured with active energy rays, and at least one release agent on the film, and then applying an active energy ray-cured dye-receiving layer 2. Cured with energy rays, preferably polyester resin 40 to 95% by weight
and 0.01 to 12 parts by weight of at least one type of mold release agent to 100 parts by weight of a mixture consisting of 60 to 5% by weight of a crosslinking agent that can be cured by active energy rays. . The dye-receiving layer 2 made of these compositions can easily be dyed with sublimable disperse dyes, has excellent stability, and has very good gloss retention after recording. Film thickness is 1μ
m or more is appropriate, and if it is less than 1 μm, the staining sensitivity and stability will be insufficient.

Polyester resins include linear thermoplastic polyester resins obtained by condensation polymerization of dicarboxylic acids and diols, and/or linear thermoplastic polyester resins obtained by condensation polymerization of unsaturated polybasic acids having reactive double bonds and polyhydric alcohols. Examples include unsaturated polyester resins, among others, linear thermoplastic polyester resins with a molecular weight of 2,000 to 40,000 obtained by polycondensation of at least one dicarboxylic acid and at least one diol, and with a low degree of crystallinity. A polyester resin containing 1% or less is preferable in terms of solubility in organic solvents, ease of dyeing, and good light resistance.

The blending amount of the polyester resin is 40 to 40% of the total amount of the crosslinking agent.
It is preferable that the amount is 95% by weight; if it is less than 40% by weight, the dyeing density with the sublimable disperse dye will not become deep under low energy conditions, and conversely, if the amount of polyester resin blended exceeds 95% by weight, the crosslinking agent will be As a result, the blocking resistance with the color sheet (transfer paper) coated with sublimable disperse dyes was poor. will cause blocking (sticking) during thermal transfer. More preferably 55% to 94% by weight
is within the range of

Specific examples of linear thermoplastic polyester resins obtained by condensation polymerization of at least one dicarboxylic acid and at least one diol include polyester resins obtained from terephthalic acid/isophthalic acid/ethylene glycol/neopentyl glycol. , Others Terephthalic acid/Isophthalic acid/Ethylene glycol/Bisphenol A-Ethylene Oxide adduct, Terephthalic acid/Inphthalic acid/
Ethylene glycol/1.6-bovine diol, terephthalic acid/isophthalic acid/sebacic acid/ethylene glycol/neopentyl glycol, terephthalic acid/sebacic acid/ethylene glycol/neopentyl glycol,
Examples include polyester resins obtained from terephthalic acid/isophthalic acid/adipic acid/ethylene glycol/neopentyl glycol, and two or more types can also be used in combination. Particularly from the viewpoint of stability against light, heat, water, etc., it is preferable to use two or more of these polyesters in combination to improve stability.

For example, when two types of polymers A and B are used together, the preferred range of use of the polymers is 20 to 80% by weight of A.
, B is 80 to 20% by weight.

It is of course possible to use esterified dimethyl terephthalate, dimethyl isophthalate, etc. as a raw material for condensation polymerization instead of terephthalic acid, inphthalic acid, etc.

Examples of unsaturated polyester resins obtained by condensation polymerization of unsaturated polybasic acids with reactive double bonds and polyhydric alcohols include maleic anhydride/phthalic anhydride/propylene glycol, maleic anhydride/isophthalic acid/ Examples of resins obtained from propylene glycol, maleic acid/fumaric acid/isophthalic acid/1,3-butanediol, maleic acid/isophthalic acid/neopentyl glycol, maleic anhydride/tetrahydrophthalic anhydride/dipropylene glycol, etc. I can do it.

The crosslinking agent is necessary in order to cure the resin composition used in the recording medium of the present invention with active energy rays and to obtain blocking resistance of the cured resin composition, and the preferred blending amount is the same as that of the polyester resin. It ranges from 5 to 60% by weight of the total amount, more preferably from 6 to 45% by weight. If the amount of crosslinking agent is less than 5% by weight, blocking tends to occur, whereas if it exceeds 60% by weight, blocking resistance will be good, but the proportion of polyester resin will decrease and sufficient dyeing density will not be obtained. ni(become)

Considering the curing of the resin composition by the crosslinking agent and the blocking resistance of the recording medium, it is preferable that the crosslinking agent contains at least one type of polyfunctional monomer, and ultraviolet rays that can be easily handled as active energy rays. When using these crosslinking agents, the polymerizable group of these crosslinking agents is preferably a monomer having an acryloyloxy group or a methacryloyloxy group.

Examples of monomers having a (meth)acryloyloxy group include polyether acrylate or polyether methacrylate (hereinafter, "acrylate or methacrylate" is simply abbreviated as "(meth)acrylate"), polyester (meth)acrylate, Examples include monomers and oligomers such as polyol (meth)acrylate, epoxy (meth)acrylate, amide urethane (meth)acrylate, urethane (meth)acrylate, spiroacetal (meth)acrylate, and polybutadiene (meth)acrylate. be able to.

Specific examples of such monomers or oligomers include l,2,6-hexanetriol/propylene oxy/
polyether (meth)acrylate synthesized from polyester/acrylic acid, trimethylolpropane/propylene oxide/acrylic acid; adipic acid/I, 6-hexaediol/acrylic acid, succinic acid/trimethylolethane/
A. Polyester (meth)acrylate synthesized from acrylic acid, etc.; triethylene glycol diacrylate,
Hexanepropylene glycol diacrylate, neopentyl glycol diacrylate, l.

4-Butanediol dimethacrylate, 2-ethylhexyl acrylate, tetrahydrofurfuryl acrylate, 2-hydroxyethyl methacrylate, ethylcarpitol acrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, dipentaerythritol tetraacrylate, dipentaerythritol Pentaacrylate, 2,2-bis(
(meth)acrylate or polyol (meth)acrylate such as 4-acryloyloxyjetoxyphenyl)propane, 2.2-bis(4-acryloyloxypropoxyphenyl)propane; diglycidyl etherified bisphenol A/acrylic acid, diglycidyl ether Epoxy (meth) such as polybisphenol A/acrylic acid, triglycidyl etherified glycerin/acrylic acid, etc.
Acrylate; γ-butyrolactone/N-methylethanolamine/bis(4-incyanatocyclohexyl)
Methane/2-hydroxyethyl acrylate, γ-butyrolactone/N-methylethanolamine/2,6-tolylene diisocyanate/tetraethylene glycol/
Amidourethane (meth)acrylates such as 2-hydroxyethyl acrylate; Urethane acrylates such as 2,6-dolylene diisocyanate diacrylate, inphorone diisocyanate diacrylate, hexamethylene diisocyanate diacrylate; Diarylidenepentaerythritol/2-hydroxyethyl Examples include spiroacetal acrylate synthesized from acrylate; acrylated polybutadiene synthesized from epoxidized butadiene/2-hydroxyethyl acrylate, and these monomers and oligomers may be used alone or in a mixed system of two or more types.

Among the above monomers and oligomers, the following general formula [wherein,
n is an integer of 1 to 4, and at least 3 of 1
Represents a polyoxyalkylene group having ~8 alkylene groups. ) and the remainder has 1 carbon atom
~8 alkyl group, hydroxyl group, ami7 group, formula: (OR
*) Group or formula represented by m H (wherein Ro represents an alkylene group having 1 to 8 carbon atoms, and m is a positive integer): (ORs) m OH (wherein R1 and m
has the same meaning as above. ) represents a group represented by ], such as dipentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, tripentaerythritol pentaacrylate, tripentaerythritol hexaacrylate, tripentaerythritol heptaacrylate, etc., or the following general compounds: Formula (n) (
In the formula, n is a positive integer from 1 to 10, and X is optionally -OH or -COCH=CH. ), such as the diacrylate of diglycidyl etherified bisphenol A, the diacrylate of Epicote+1001 (-n=3, manufactured by Shell), or the polyacrylate of the following general formula (I[[) (In the formula, X,, x,... Xn is the same or different alkylene group having 6 or less carbon atoms or 1 hydrogen atom
It has a structure in which 5 are substituted with hydroxyl groups, and n is O~5
is an integer. ), such as 2,2-bis(4-acryloyloxyjetoxyphenyl)propane, 2,2-bis(4-acryloyloxytriethoxydiphenyl)propane, 2,2-bis(4-acryloyloxy) Jetoxyphenyl)propane and the like have very good quick drying properties in air when ultraviolet rays are used as active energy rays, and are particularly preferred crosslinking agents.

In the present invention, it is necessary to incorporate a release agent in order to further improve the blocking resistance (staking resistance) between the recording medium and the transfer paper (color sheet). As the mold release agent, at least one selected from silicone surfactants, fluorine surfactants, and graft polymers having polyorganosiloxane as a trunk or branch can be used, and they can also be used in combination. The blending amount is 0°0 for a total of 11,100 parts by weight of polyester resin and crosslinking agent.
It can be used in a range of 1 to 12 parts by weight, preferably 0.05 to 10 parts by weight.

As a silicone surfactant, a compound in which polyorganosiloxane and polyoxyalkylene are blocks (which may be slightly modified with other functional groups) is effective, and in particular CH, - in silicone surfactants are effective. (Si○)8
1. The ratio of - group to 10R- group (R: alkylene residue) is CHs (S + O) + lt-/-0R- = 1
/10 to 110.1, preferably 115 to 110
．． Those within the range of 2 are effective in improving the blocking properties, leveling properties, and dyeing density.

As a specific example of the silicone surfactant mentioned above, the general formula (
IV), (V) CH.

where m and n are I, 2. ．． 3. A positive integer of the river,
Also, X and y are 0, 1, 2, 3. ...represents the number of
takes the value. R represents hydrogen, an alkyl group, an acyl group, an aryl group, or an acetoxy group. ) (where Q is -
(CHe)Z O-(CHtCHto)X-(CH
tCHO)yRs CH.

where m and n are 1, 2, 3. A positive integer of...
Also X and ylto, 1.2.3. -4) The number, z
it represents O or an integer from 1 to 5 and satisfies the formula.

CH.

CH.

R8 represents hydrogen, an alkyl group, an acyl group, an aryl group, or an acetoxy group. )
Examples include compounds represented by:

In addition, as a fluorine-based surfactant, it is soluble in a mixture of polyester resin and crosslinking agent, and is resistant to professional use.

It is possible to use one or more nonionic, anionic, cationic, or amphoteric fluorine-based surfactants as long as they exhibit kinging properties, such as evafluoroalkoxypolyfluoroalkyl sulfate. , fluorocarbon sulfonate, fluorocarbon carboxylate; for example, N-fluoroalkylsulfonamide alkylamine quaternary ammonium salt, N
- fluoroalkylsulfonamidoalkylamine salt,
Cationic surfactants such as N-fluoroalkylamidoalkylamine quaternary ammonium salts, N-fluoroalkylamidoalkylamine salts, N-fluoroalkylsulfonamidealkyl halomethyl ether quaternary ammonium salts; for example, fluorocarbon sulfonamides, fluorocarbon aminos Sulfonamide, fluorocarbon carboxysulfonamide, fluorocarbon hydroxysulfonamide, fluorocarbon sulfonamide ethylene oxide adduct, fluorocarbon hydroxysulfonamide sulfate ester, fluorocarbon amino acid amide, fluorocarbon acid amide, fluorocarbon hydroxy acid amide, ethylene oxide addition condensate of fluorocarbon acid amide , fluorocarbon hydroxy acid amide sulfate ester, fluorocarbon hydroxy acid amide sulfate ester, fluorocarbon sulfonic acid, fluorohydrocarbon carboxylic acid, fluorohydrocarbon alkyl ester, fluorohydrocarbon alkyl ether, fluorohydrocarbon carboxyalkyl ester, fluorohydrocarbon hydroxyamide, 7-ionic surfactants such as fluorohydrocarbon alkyl ester sulfuric acid and fluoroalkyl diamine; Examples include amphoteric surfactants such as alkylamines having a betaine-type fluorocarbon sulfonamide bond and alkylamines having a betaine-type fluorocarbon acid amide bond. . Among the above-mentioned surfactants, nonionic surfactants are preferable, especially considering the improvement of leveling and elimination of blocking of the recording medium of the present invention.

Examples of graft polymers having polyorganosiloxane as a trunk or branches include those having a polymer or copolymer obtained by vinyl polymerization, polycondensation, ring-opening polymerization, etc. as a trunk and polyorganosiloxane as branches. I can do it. Examples of these graft polymers include polysiloxanes (macromonomers) to which a methacryloyloxy group, a vinyl group, or a mercapto group is added at one end.
) is polymerized with at least one monomer such as alkyl (meth)acrylate, (meth)acrylic acid, a derivative of (meth)acrylic acid having a functional group, vinyl acetate, vinyl chloride, (meth)acrylonitrile, or styrene. Graft polymer obtained by reacting a dicarboxylic acid and a diol with a macromonomer having two hydroxyl groups or carboxyl groups near the end of polysiloxane; Examples include graft polymers obtained by reacting a macromonomer having a group with a jepoxy or diisocyanate compound.

Examples of other graft polymers include those having polyorganosiloxane as a trunk and M polymers or copolymers obtained by vinyl polymerization, polycondensation, ring-opening polymerization, etc. as branches. Examples of these include forming a methacryloyloxy group in the side chain by condensing an organosilane with a silane having a vinyl polymerizable group, such as 3-methacryloxypropyldimethoxymethylsilane, methylvinyldimethoxysilane, or ethylvinyljethoxysilane. A polysiloxane having the following is synthesized, and then the heptamer is combined with an alkyl (meth)acrylate, (meth)acrylic acid, a derivative of (meth)acrylic acid having a functional group, and vinyl acetate 1. A graft polymer obtained by polymerizing at least one monomer such as vinyl chloride, (meth)acrylonitrile, or styrene; A graft obtained by synthesizing a polysiloxane having a glycidyl group, then reacting this with (meth)acrylic acid to obtain a monomer containing a (meth)acryloyloxy group, and then polymerizing the monomer. Polymer: Examples include graft polymers obtained by condensing organosilane and hydroxyethylmethyldimethoxysilane to synthesize a polysiloxane having a hydroxyl group in the side chain, and then polycondensing dicarboxylic acid and the diol. .

When synthesizing polysiloxane, which is the backbone or technique of the graft polymer, cyclic silane, especially cyclic dimethylpolysiloxane with 3 to 8 repeating units, is used as the main raw material, and trimethylmethoxysilane or trimethylethoxysilane is used as a molecular weight regulator. Using a silane compound having one alkoxy group in one molecule, polymerization may be carried out at 70 to 150° C. using a functional group-containing silane and a strong acid or strong base as a catalyst.

The blending amount of the graft polymer is as follows: 0.01 to 12 parts by weight, preferably 0.01 to 12 parts by weight of one of the graft polymers, relative to 100 parts by weight of the mixture of polyester resin and crosslinking agent.
The amount is 05 to 10 parts by weight, and blocking with the transfer paper (color sheet) is significantly eliminated by blending, and the dark fading resistance of the dyed article is improved. The amount added is 0.0
If the amount is 1 part by weight, the effect of eliminating blocking will be reduced and the dark fading property will not be improved, which is not preferable.

If the amount is more than 12 parts by weight, the cured product cured with active energy rays becomes opalescent and the dyeing density when dyed with a sublimable disperse dye decreases, which is not preferable.

The molecular weight of the graft polymer containing polysiloxane is 10
It is preferable that it is 00 or more. In addition, the weight ratio of the polyorganosiloxane component and the trunk or branch polymer or copolymer other than the polyorganosiloxane component is (polyorganosiloxane component)/(polymer or copolymer component)= It is preferably 9515 to 10/90, more preferably 90/10 to 20/80. The ratio is 9
If it exceeds 515, the dark fading property tends to be poor, and conversely, if it becomes less than 10/90, the blocking resistance tends to decrease and the dark fading property also tends to become poor. Furthermore, if the molecular weight of the graft polymer is less than 1000, it tends to be difficult to improve the dark fading property.

The resin composition for forming the dye-receiving layer 2 in the recording medium of the present invention is suitable for use when a monomer such as tetrahydrofurfuryl acrylate, which has strong polymer solubility and low viscosity, is used as a component of the crosslinking agent. can be used as is for roll coating, barcode coating, blade coating, etc., but in order to improve coating workability, these compositions must be mixed with a solvent such as ethyl alcohol, methyl ethyl ketone, toluene, ethyl acetate, or dimethyl formamide. It is better to adjust the coating viscosity to an appropriate level. This allows for easy spray coating, curtain coating, flow coating, dip coating, etc.

In addition, in the present invention, depending on the purpose, fine inorganic particles of several μm or less, such as silica, alumina, talc, etc.
Titanium oxide or the like may also be blended.

The resin composition for forming the dye-receiving layer 2 is cured with active energy rays such as electron beams and ultraviolet rays, but it is preferable to use ultraviolet rays in consideration of radiation source management. When ultraviolet rays are used as active energy rays, a photopolymerization initiator is usually added in an amount of 0.1 to 10 parts by weight based on a total of 100 parts by weight of the polyester resin and crosslinking agent of the resin composition.

Specific examples of the photopolymerization initiator include benzoyl, benzoyl isobutyl ether, benzyl methyl ketal, ethylphenyl glyoxylate, shed diacetophenone, 1,1-dichloroacetophenone, 4'-
Isopropyl-2-hydroxy-2-methylpropiophenone, l-hydroxycyclohexylphenyl ketone, benzophenone, benzophenone/jetanolamine, 414'-bisdimethylaminobenzophenone, 2
-Carbonyl compounds such as methylthio beef santhone, tert-butylanthraquinone, and benzyl; Sulfur compounds such as tetramethylthiuram monosulfide and tetramethylthiuram disulfide; Compounds include peroxide compounds such as benzoyl peroxide and di-tert-butyl peroxide, and these compounds may be used alone or in a mixture of two or more. The above resin composition is coated on the antistatic layer 4 on the film I, and active energy rays are irradiated to produce a recording medium.

A polyester film is placed on the back side of the recording medium in order to eliminate the adverse effects of fiber waste generated from the plain paper 3 and to optimize the running properties of the recording medium in the printer.
Plastic films such as polypropylene film, nylon film, vinyl chloride film, polyethylene film, or polypropylene paper, Yupo F manufactured by Oji Yuka.
P.G.

It is desirable to laminate synthetic paper such as SGU or TOYOPEARL manufactured by Toyobo Co., Ltd. or a protective film 4.

These synthetic paper or protective film 4, and film 1
is adhered to the plain paper 3 by the adhesive 5, but it is preferable that the adhesive layer be thicker because the influence of the plain paper 3 will not be exerted.

These papers or films can be used as they are, or if necessary, they can be pretreated by washing, etching, corona discharge, active energy ray irradiation, dyeing, printing, etc. good.

When stacking recording media, in order to prevent migration of the disperse dye, it is better to apply the resin composition to only one side of the base material of the recording media. In order to prevent this, it is more preferable to provide a non-migration layer on the surface opposite to the coated surface of the sublimable disperse dye dyeable resin composition.

As a composition for forming a non-migration layer, monomer/oligomer mixture 1001 consisting of the above-mentioned polyfunctional monomer and/or l-functional monomer is used! parts and, if necessary, 0.1 to 0.1 parts of the photopolymerization initiator described above. A coating agent consisting of 100 parts by weight can be used, but in order to sufficiently prevent dye migration due to disperse dyes, the monomer/oligomer mixture must have an average of 1.5 or more polymerizable groups per molecule. is necessary. These coating agents can also be adjusted in viscosity with a solvent, coated on a substrate, and cured in the same manner as the sublimation type disperse dye dyeable composition.

In the following, examples of the present invention will be described in more detail. In addition, in Examples and Comparative Examples, "parts" are "parts by weight"
shows.

Preparation of base material C reference example 1] :'-) A milky white polyester film (W-300 manufactured by Diafoil, thickness 38 μs) was coated on one side of paper (85 μs thick layer).
) was laminated, and white polypropylene paper (Toyobo Toyo Pearl SS, thickness 50 μm) was laminated on the opposite side.

Adhesives are Toyo Morton AD-577-1 and CAT-5.
2 was used, and the coating amount was 5 g/+s" between the milky white polyester film and the coated paper on a dry basis, and 3 g/s" on a dry basis between the 2-sheet paper and the white polypropylene paper. Drying was performed at 80°C for about 30 seconds, and aging was performed at 40'C for 2 days.

[Reference Example 2] A laminate paper was prepared in the same manner as in Reference Example 1 except that Diafoil W-900 (thickness 38 μl) was used instead of Diafoil W-300 (thickness 38 μl).

[Reference Example 3] Diafoil milky white polyester film W-300
(thickness: 188 μm) was used as the base material.

[Reference example 4] Oji Yuka polypropylene paper YUPO FPG (thickness 200μ
s) was used as the base material.

[Reference Example 5] A mixture of 60 parts by weight of a copolymer of methyl methacrylate and styrene (BR-50 manufactured by Mitsubishi Rayon Co., Ltd.) and 40 parts by weight of a compound having the following structural formula was mixed with methyl ethyl ketone/
Toluene = l/l no solvent t = solid content concentration lO%
It was dissolved so that

This solution was applied to a thickness of approximately 1 μm on the white polyester film of Reference Example 1 using a percoater and dried to form a uniform film.

[Reference Example 6] A mixture consisting of 50 parts by weight of a copolymer of methyl methacrylate and ethyl acrylate (BR-64 manufactured by Mitsubishi Rayon Co., Ltd.) as a resin, 45 parts by weight of a compound having the following structural formula, and 5 parts by weight of sorbitan monooleate. In the same manner as in Reference Example 6, a film with a thickness of approximately 1 μm was formed on the white polyester film of the laminated paper of Reference Examples 1 and 2. The obtained base materials were designated as Reference Examples 6-1 and 6-2, respectively.

A dye-receiving layer with 6 ua was prepared.

For Comparative Examples 7 to 9, the coating liquid was applied onto the base film of Comparative Example 1゜3.4 using a wire wire (
After drying, the coating weight was 6 g/m''), dried to form a receptor layer, and further subjected to kicoreing in a hot air dryer at 100° C. for 30 minutes.

A video printer (Mitsubishi 5CT-C) was attached to the obtained recording medium.
Images were recorded using P 100). As the transfer sheet, the provided 5CT-CK100TS was used.

The obtained evaluation results are shown in Table 2.

(R1 is an alkyl group having 6 to 10 carbon atoms) Preparation of dye-receiving layer For Examples 1 to 9 and Comparative Examples 1 to 6, coating solutions A-C shown in Table 1 were prepared, and Reference Examples 1 to 6 The combinations listed in Table 2 are uniformly coated on the substrate film described in Table 2 by a dipping method, and then irradiated with ultraviolet rays using a high-pressure mercury lamp in the air to obtain a film thickness of 5 to 500. Resin composition components Polyester resin A*5) 60 parts Polyester resin B*6) 3 parts Amine-modified silicone (Shin-Etsu Chemical Co., Ltd., KF-393) 5 parts Epoxy-modified silicone (Shin-Etsu Chemical Co., Ltd.: X-22-343) 5 parts Solvent Methyl ethyl ketone 350 parts Toluene
350 copies 1) *2) *3) *4) 2P6A Nidipentaerythritol to bovine acrylate 2P5A Nidipentaerythritol pentaacrylate 2P4A Nidipentaerythritol tetraacrylate A-DEP: 2,2-bis(4-acryloyloxyjetoxy) Phenyl) Propane *5) *6) *7) Polyester resin A: A resin obtained by polymerizing terephthalic acid/isophthalic acid/sebacic acid/ethylene glycol/neopentyl glycol by condensation polymerization (molecular weight 20,000 to 25,000, Tg 10°C) Polyester resin B: Resin polymerized by condensation polymerization of terephthalic acid/isophthalic acid/sebacic acid/ethylene glycol/neopentyl glycol/1,4-butanediol (molecular weight 15,000 to 20,000, Tg 45°C) Silicone surfactant A (CtH-0)x COCtHs $8) Synthesis example 1 Graft polymer CP-1 Polydimethylsiloxane with methacryloyloxypropyl at one end (molecular weight 5000) 100g methyl methacrylate 200g benzoyl peroxide
3g toluene 500g It is possible to obtain a recording medium using the sublimation type thermal transfer recording method, which has excellent image quality without roughness, excellent gloss after recording, and less curl after recording, and its effects are extremely large. be.

[Brief explanation of drawings]

1 to 4 all show cross-sectional views of embodiments of the recording medium of the present invention. The above composition was charged into a 312 volume flask equipped with a stirrer, and after purging with nitrogen, polymerization was carried out at 90'C for 8 hours. This polymerization solution was added to a large amount of methanol, and the polymer was precipitated and recovered. The resulting graft polymer had a molecular weight of about 80,000, with polydimethylsiloxane as branches and polymethyl methacrylate as the trunk, and had a polydimethylsiloxane/polymethyl methacrylate ratio of 33/67. [Effects of the Invention] As detailed above, according to the present invention, the adhesion of the image-receiving layer is good, the whiteness of the base is high, and the antistatic film, 2, dye-receiving layer, 3 ... Plain paper, 4... Antistatic layer, 5... Adhesive layer, 6... Synthetic paper or protective film, 7... Antistatic layer that also has easy adhesion.

Claims (1)

[Claims] A thermal transfer recording method characterized in that a film is adhered to one side of plain paper, an antistatic layer is formed on the film surface, and a dye-receiving layer cured with active energy rays is further formed on top of the antistatic layer. recorded object.