JPH07172046A - Thermal recording material for game card - Google Patents

Abstract

PURPOSE:To provide a thermal recording material for a game card which has excellent printability and a printed image preservability and in which a commodity value as a card has been enhanced. CONSTITUTION:A thermal recording material for a game card comprises a thermal color developing layer 4 formed on a surface of a support having a thickness of 100-400mum to contain leuco dye and a developer as main ingredients and an overcoating layer 5 containing binder resin as a main ingredient to be sequentially laminated, and further a resin film laminated on the printed surface of the rear surface thereof, wherein both side surfaces are printed as specified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-sensitive recording material for game cards, and more particularly to a heat-sensitive recording material for game cards which is excellent in printability and storability and has high commercial value.

[0002]

2. Description of the Related Art A thermosensitive recording material generally comprises a thermosensitive coloring layer containing a thermochromic composition as a main component on a support such as paper, synthetic paper or plastic film. A colored image can be obtained by heating with light or a strobe lamp. Compared to other recording materials, this type of recording material does not require complicated processing such as development and fixing,
Not only is it used for copying books, documents, etc. due to the advantages of being able to obtain records in a short time with a relatively simple device, low noise and environmental pollution, and low cost, electronic calculators, facsimiles, It is widely used as a recording material in various fields such as ticket vending machines, labels and recorders. The thermochromic composition used for such a heat-sensitive recording material is composed of a general color former and a developer which allows the color former to develop color when heated, and the color former is, for example, a lactone, a lactam or a colorless compound having a spiropyran ring. Alternatively, a light-colored leuco dye has been conventionally used as a developer, and an organic acid or a phenolic substance has been used. The recording material in which the color-developing agent and the color-developing agent are combined has a particular advantage that the color tone of the obtained image is clear, and the whiteness of the background is high, and the weather resistance of the image is excellent, Widely used.

Further, in recent years, in the amusement field, there has been an attempt to use a heat-sensitive recording material as a game score recording card. In this case, there is a tendency that the card is provided with character printing and has the commercial value of the card itself. Therefore, the heat-sensitive recording material for game cards must have printability on both sides, which is compatible with various printing methods. Furthermore, the recording surface is required to have excellent surface gloss and preservability of printed images. Has been done.

[0004]

Therefore, an object of the present invention is to meet the above-mentioned problems, that is, to have excellent printability, to further enhance the commercial value as a card, and to have excellent print image storability. , To provide a heat-sensitive recording material for game cards.

[0005]

According to the present invention, a paper thickness of 1
A thermosensitive coloring layer containing a leuco dye and a color developer as main components and an overcoat layer containing a binder resin as a main component were sequentially laminated on the surface of a support having a thickness of from 0 to 400 μm, and further, required printing was performed on both sides and There is provided a heat-sensitive recording material for game cards, which is obtained by laminating a resin film on the printed surface of.

The support used in the present invention is not particularly limited, and may be general high-quality paper, medium-quality paper, lower-grade paper, synthetic pulp-containing paper, single-sided / double-sided coated paper and the like. The paper thickness is in the range of 100 to 400 μm, preferably 150 to 300 μm. If the thickness is 100 μm or less, the strength is insufficient for a game card, and
The texture is poor, and when the thickness is 400 μm or more, the cost is high, and the uniformity of the papermaking texture is lacking, and it is not suitable as a support for coating.

Further, in order to form the thermosensitive coloring layer on the surface of the support of the present invention, a conventional leuco dye, a color developer and a binder are added to
If necessary, various conventional compounding agents, for example, a sensitivity improver, a filler, etc., may be compounded and formed by binding and supporting them on a support.

As the leuco dye used in the present invention, a leuco dye generally known in this type of leuco recording material is applied. Leuco compounds such as dyes are preferably used. Specific examples of such leuco dyes include:
For example, the following may be mentioned. 3,3-
Bis (p-dimethylaminophenyl) -phthalide, 3,
3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide (also known as crystal bioretlactone), 3,3-bis (p-dimethylaminophenyl) -6
-Diethylaminophthalide, 3,3-bis (p-dimethylaminophenyl) -6-chlorophthalide, 3,3-bis (p-dibutylaminophenyl) phthalide, 3-cyclohexylamino-6-chlorofluorane, 3 -Dimethylamino-5,7-dimethylfluorane, 3- (N-methyl-N-isoamylamino) -6-methyl-7-anilinofluorane, 3- (N-methyl-N-isobutylamino) -6 -Methyl-7-anilinofluorane, 3-
(N-methyl-N-amylamino) -6-methyl-7-
Anilinofluorane, 3- (N-methyl-N-cyclohexylamino) -6-methyl-7-anilinofluorane, 3- (N-methyl-N-iso-propylamino)
-6-Methyl-7-anilinofluorane, 3- (N-ethyl-N-tetrahydrofurfurylamino) -6-methyl-7-anilinofluorane, 3-diethylamino-7
-Chlorofluorane, 3-diethylamino-7-methylfluorane, 3-diethylamino-7,8-benzfluorane, 3-diethylamino-6-methyl-7-chlorofluorane, 3- (Np-tolyl-) N-ethylamino) -6-methyl-7-anilinofluorane, 3-pyrrolidino-6-methyl-7-anilinofluorane, 2-
{N- (3'-trifluoromethylphenyl) amino}
-6-diethylaminofluorane, 2- {3,6-bis (diethylamino) -9- (o-chloroanilino) xanthylbenzoate lactam}, 3-diethylamino-6-
Methyl-7- (m-trichloromethylanilino) fluorane, 3-diethylamino-7- (o-chloroanilino) fluorane, 3-dibutylamino-7- (o-chloroanilino) fluorane, 3-N-methyl-N-amylamino -6-Methyl-7-anilinofluorane, 3-N
-Methyl-N-cyclohexylamino-6-methyl-7
-Anilinofluorane, 3-diethylamino-6-methyl-7-anilinofluorane, 3-dibutylamino-6
-Methyl-7-anilinofluorane, 3- (N, N-diethylamino) -5-methyl-7- (N, N-dibenzylamino) fluorane, benzoylleuco methylene ble-, 6'-chloro-8 ' -Methoxy-benzoindolino-
Pyrirospirane, 6'-bromo-3'-methoxy-benzoindolino-pyrrirospirane, 3- (2'-hydroxy-4'-dimethylaminophenyl) -3- (2'-methoxy-5'-chlorophenyl) phthalide, 3- (2'-hydroxy-4'-dimethylaminophenyl) -3- (2'-
Methoxy-5'-nitrophenyl) phthalide, 3- (2 '
-Hydroxy-4'-diethylaminophenyl) -3-
(2'-methoxy-5'-methylphenyl) phthalide, 3
-Diethylamino-6-methyl-7- (2 ', 4'-dimethylanilino) fluorane, 3- (2'-methoxy-4'
-Dimethylaminophenyl) -3- (2'-hydroxy-4'-chloro-5'-methylphenyl) phthalide, 3-
Morpholino-7- (N-propyl-trifluoromethylanilino) fluorane, 3-pyrrolidino-7-trifluoromethylanilinofluorane, 3-diethylamino-
5-chloro-7- (N-benzyl-trifluoromethylanilino) fluorane, 3-pyrrolidino-7- (di-p
-Chlorophenyl) methylaminofluorane, 3-diethylamino-5-chloro-7- (α-phenylethylamino) fluorane, 3- (N-ethyl-p-toluidino) -7- (α-phenylethylamino) Fluoran,
3-diethylamino-7- (o-methoxycarbonylphenylethyl) fluorane, 3-diethylamino-5-
Methyl-7- (α-phenylethylamino) fluorane, 3-diethylamino-7-piperidinofluorane,
2-chloro-3- (N-methyltoluidino) -7- (p
-N-Butylanilino) fluorane, 3- (N-benzyl-N-cyclohexylamino) -5,6-benzo-7
-Α-naphthylamino-4'-bromofluorane, 3,
6-bis (dimethylamino) fluorene spiro (9,
3 ')-6'-dimethylaminophthalide, 3- (N-ethyl-N-cyclohexylamino) -5,6-benzo-
7-α-naphthylamino-4′-bromofluorane, 3
-Diethylamino-6-chloro-7-anilinofluorane, 3- (N-ethyl-N-2-ethoxypropylamino) -6-methyl-7-anilinofluorane, 3- (N
-Ethyl-N-tetrafurfurylamino) -6-methyl-7-anilinofluorane, 3-diethylamino-6-
Methyl-7-mesitidino-4 ', 5'-benzofluorane, 3-diethylamino-6-methyl-7- (2', 4 '
-Dimethylanilino) fluoran and the like. 3- (p-dimethylaminophenyl) -3- {1,1-
Bis (p-dimethylaminophenyl) ethylene-2-yl} phthalide, 3- (p-dimethylaminophenyl)-
3- {1,1-bis (p-dimethylaminophenyl) ethylene-2-yl} -6-dimethylaminophthalide, 3
-(P-Dimethylaminophenyl) -3- (1-p-dimethylaminophenyl-1-phenylethylene-2-yl) phthalide, 3- (p-dimethylaminophenyl)-
3- (1-p-dimethylaminophenyl-1-p-chlorophenylethylene-2-yl) -6-dimethylaminophthalide, 3- (4'-dimethylamino-2'-methoxy) -3- (1 ''-P-dimethylaminophenyl-1''
-P-chlorophenyl-1 ", 3" -butadiene-4 "
-Yl) benzophthalide, 3- (4'-dimethylamino-2'-benzyloxy) -3- (1 ''-p-dimethylaminophenyl-1 ''-phenyl-1 '', 3 ''-butadiene- 4 ''-yl) benzophthalide, 3-dimethylamino-6-dimethylamino-fluorene-9-spiro-
3 '-(6'-dimethylamino) phthalide, 3,3-bis {2- (p-dimethylaminophenyl) -2- (p-methoxyphenyl) ethenyl} -4,5,6,7-tetrachlorophthali 3-bis {1,1-bis (4-pyrrolidinophenyl) ethylene-2-yl} -5,6-dichloro-4,7-dibromophthalide, bis (p-dimethylaminostyryl) -1- Naphthalenesulfonylmethane Bis (p-dimethylaminostyryl) -1-p-tolylsulfonylmethane and the like.

Further, in the present invention, various electron-accepting compounds such as phenolic compounds, thiophenolic compounds, thiourea derivatives, organic acids and metal salts thereof can be applied as a color developer in the invention, and specific examples thereof can be applied. Examples include, but are not limited to, those shown below. Bentonite, zeolite, acid clay, activated clay, silica gel, phenol resin, 4,4'-
Isopropylidene bisphenol, 3,4'-isopropylidene bisphenol, 4,4'-isopropylidene bis (o-methylphenol), 4,4'-secondary butylidene bisphenol 4,4'-isopropylidene bis (o-tertiary Butylphenol), zinc p-nitrobenzoate, 1, 3, 5
-Tris 4-tert-butyl-3-hydroxy-2,
6-dimethylbenzyl isocyanuric acid, 2,2- (3,
4'-dihydroxyphenyl) propane, bis (4-hydroxy-3-methylphenyl) sulfide, 4- (β
-(P-methoxyphenoxy) ethoxy) salicylic acid,
1,7-bis (4-hydroxyphenylthio) 3,5-
Dioxaheptane, 4,4'-cyclohexylidene diphenol, 4,4'-isopropylidene bis (2-chlorophenol), 2,2'-methylenebis (4-methyl-6-
Tert-butylphenol), 2,2'-methylenebis (4-ethyl-6-tertiarybutylphenol), 4,4'-butylidenebis (6-tert-butyl-2-methyl) phenol, 1,1,3-tris (2 -Methyl-4-hydroxy-5-tert-butylphenyl) butane, 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane, 4,4 '
-Thiobis (6-tert-butyl-2-methyl) phenol, 4,4'-diphenol sulfone, 4,2'-diphenol sulfone, 4-isopropoxy-4'-hydroxydiphenyl sulfone, 4-benzyloxy-4 '-
Hydroxydiphenyl sulfone, 4,4′-diphenol sulfoxide, isopropyl P-hydroxybenzoate,
Benzyl P-hydroxybenzoate, benzyl protocatechuate, stearyl gallate, lauryl gallate, octyl gallate, 1,7-bis (4-hydroxyphenylthio) -3,5-dioxaheptane, 1,5-bis ( 4-
Hydroxyphenylthio) -3-oxapentane, 1,
3-bis (4-hydroxyphenylthio) -propane,
2,2'-methylenebis (4-ethyl-6-tert-butylphenol), 1,3-bis (4-hydroxyphenylthio) -2-hydroxypropane, N, N'-diphenylthiourea, N, N'- Di (m-chlorophenyl) thiourea, salicylanilide, 5-chloro-salicylanilide, salicyl-o-chloroanilide, 2-hydroxy-
3-naphthoic acid, antipyrine complex of zinc thiocyanate, zinc salt of 1-acetyloxy-2-naphthoic acid, 2
-Acetyloxy-3-naphthoic acid zinc salt, 2-acetyloxy-1-naphthoic acid zinc salt, 2-hydroxy-1-naphthoic acid, 1-hydroxy-2-naphthoic acid,
Metal salts of zinc, aluminum, calcium, etc. of hydroxynaphthoic acid bis- (4-hydroxyphenyl) acetic acid methyl ester, bis- (4-hydroxyphenyl) acetic acid benzyl ester, 4- {β- (p-methoxyphenoxy) ethoxy} Salicylic acid, 1,3-bis (4-hydroxyphenyl) benzene, 1,4-bis (4-hydroxyfel)
Benzene, 3,4-dihydroxy-4'-methyldiphenyl sulfone, 2,4'-diphenol sulfone, 2,
2'-diallyl-4,4'-diphenol sulfone, α, α
-Bis (4-hydroxyphenyl) -α-methyltoluene, zinc thiocyanate antipyrine complex, tetrabromobisphenol A, tetrabromobisphenol S,
4,4'-thiobis (2-methylphenol) 4,4'-
Thiobis (2-chlorophenol) and the like.

In order to obtain the thermosensitive recording medium of the present invention, a leuco dye, a color developer and the above-mentioned auxiliary components may be bound and supported on a support. As the binder in this case, various conventional binders can be appropriately used. Specific examples of such a binder include the followings.
Polyvinyl alcohol, starch and its derivatives, cellulose derivatives such as methoxycellulose, hydroxyethylcellulose, carboxymethylcellulose, methylcellulose, ethylcellulose, sodium polyacrylate, polyvinylpyrrolidone, acrylamide / acrylic ester copolymer, acrylamide / acrylic ester / methacrylic acid Terpolymer, styrene / maleic anhydride copolymer alkali salt, isobutylene / maleic anhydride copolymer alkali salt, polyacrylamide, sodium alginate, gelatin, casein and other water-soluble polymers, polyvinyl acetate, Emulsion of polyurethane, polyacrylic acid ester, polymethacrylic acid ester, vinyl chloride / vinyl acetate copolymer, ethylene / vinyl acetate copolymer, etc. and styrene / pig Ene copolymers, latexes such as styrene / butadiene / acrylic copolymer.

Further, in the case of obtaining a thermosensitive recording medium according to the present invention, various heat fusible substances can be used as the sensitivity improver, and the specific examples thereof include the following compounds, but the present invention is not limited thereto. It is not something that will be done. stearic acid,
Fatty acids such as behenic acid, stearic acid amide, fatty acid amides such as palmitic acid amide, p-benzylbiphenyl, terphenyl, triphenylmethane, benzyl p-benzyloxybenzoate, β-benzyloxynaphthalene, β-naphthoic acid Phenyl ester, 1-hydroxy-2-naphthoic acid phenyl ester, 1-hydroxy-
2-naphthoic acid methyl ester, diphenyl carbonate, glare coal carbonate, terephthalic acid dibenzyl ester, terephthalic acid dimethyl ester, 1,4-
Dimethoxynaphthalene, 1,4-diethoxynaphthalene, 1,4-dibenzyloxynaphthalene, 1,2-bis (phenoxy) ethane, 1,2-bis (3-methylphenoxy) ethane, 1,2-bis (4 -Methylphenoxy) ethane, 1,4-bis (phenoxy) butane, 1,
4-bis (phenoxy) -2-butene, 1,2-bis (4-methoxyphenylthio) ethane, dibenzoylmethane, 1,4-bis (phenylthio) butane, 1,4-
Bis (phenylthio) -2-butene, 1,2-bis (4
-Methoxyphenylthio) ethane, 1,3-bis (2-
Vinyloxyethoxy) benzene, 1,4-bis (2-
Vinyloxyethoxy) benzene, p- (2-vinyloxyethoxy) biphenyl, p-aryloxybiphenyl, p-propargyloxybiphenyl, dibenzoyloxymethane, 1,3-dibenzoyloxypropane,
Dibenzyl disulfide, 1,1-diphenyl ethanol, 1,1-diphenyl propanol, p- (benzyloxy) benzyl alcohol, 1,3-diphenoxy-
2-propanol, N-octadecylcarbamoyl-p
-Methoxycarbonylbenzene, N-octadecylcarbamoylbenzene, bis (4-methylbenzyl) oxalate,
Oxalic acid dibenzyl ester, oxalic acid bis (4-chlorobenzyl), 1,5-bis (p-methoxyphenyloxy)-
3-oxapentane, 1,2-bis (4-methoxyphenoxy) propane and the like.

In the present invention, if necessary, auxiliary additives commonly used in this type of heat-sensitive recording material, such as fillers and surfactants, can be used in combination. in this case,
Examples of the filler include calcium carbonate, magnesium carbonate, silica, zinc oxide, titanium oxide, aluminum hydroxide, zinc hydroxide, barium sulfate, clay, talc, inorganic fine powder of surface-treated calcium carbonate, silica, etc. Other examples include organic fine powders such as urea-formalin resin, styrene / methacrylic acid copolymer, polystyrene resin and vinylidene chloride resin. As other additive substances, lubricants such as zinc stearate and calcium stearate, various surfactants and antifoaming agents are added as necessary.

As the resin used in the overcoat layer of the present invention, the above-mentioned binder and crosslinking agent are used. In this case, conventionally known crosslinking agents are used, for example, glyoxal and its derivatives, epoxy crosslinking agents, aziridine crosslinking agents, amine crosslinking agents, aldehyde starches, aldehyde crosslinking agents such as glutaraldehyde, and melamine crosslinking agents. Agents, methylol-based crosslinking agents, isocyanate-based crosslinking agents, zirconium-based metal crosslinking agents, boric acid, polyamide epichlorohydrin-based crosslinking agents, and the like. Among these, aziridine crosslinking agents, glyoxal and their derivatives are particularly preferable. The amount of the binder resin and the cross-linking agent used is 0.01-
It is preferable to use 1 part by weight.

In the overcoat layer of the present invention, if necessary, the above-mentioned filler, heat-fusible substance (or lubricant), surfactant and the like may be used in combination as auxiliary additive components commonly used in this type of heat-sensitive recording material. Can be done. A thermosensitive coloring layer and an overcoat layer composed of the above materials are sequentially laminated on a support, and as a thermosensitive recording material, surface-treated with various calenders such as a super calender and a gloss calender if necessary. Can be done.

In the present invention, the thermal recording material thus obtained is printed on both sides by various printing methods such as convex printing and gravure offset printing. At this time, character printing is performed on the back side of the thermosensitive recording material using, for example, four colors of ink, and printing such as score printing is performed on the thermosensitive coloring surface with several colors of ink.

Further, according to the present invention, a heat-sensitive recording material for game cards can be obtained by laminating a resin film on the printing surface on the back side as a base. The resin film used in the present invention has a thickness of 10 to 50 μm, preferably 20 to 30 μm.
m polypropylene film or the like is used, and it is processed by nipping with a heat roll heated to a laminating temperature of 50 to 150 ° C.

In the heat-sensitive recording material for game cards of the present invention, if an undercoat layer containing a filler as a main component is provided between the support and the heat-sensitive color-developing layer, the color-developing property and the surface quality are improved to improve the printing quality. Also, the printability is improved, which is preferable. The above-mentioned filler is used in this undercoat layer, and the above-mentioned binder and surfactant can be added to bond the support and the filler. Further, in the heat-sensitive recording material for game cards of the present invention, when a back coat layer containing a binder resin as a main component is provided between the support and the back side printing surface, it is possible to prevent sinking due to ink penetration in back side printing. It is preferable because it improves print quality. For this back coat layer, the material constitution used for the above over coat layer can be used.

[0018]

EXAMPLES Next, the present invention will be described in more detail by way of examples. The following parts and% are based on weight.

Example 1 A mixture consisting of the following components was dispersed by a sand glider for 5 to 10 hours respectively [A
Liquid], [B liquid] and [C liquid] were prepared. [Liquid A] 3- (N-methyl-N-cyclohexyl) amino-6-methyl-7-anilinofluorane 10 parts 10% aqueous solution of polyvinyl alcohol 10 parts water 80 parts [Liquid B] 4-hydroxyphenyl-4 ′ -Isopropoxyphenyl sulfone 10 parts Calcium carbonate 10 parts 1,1,3-tris (2-methyl-4-hydroxyphenyl-5-tert-butylphenyl) butane 5 parts 10% aqueous solution of polyvinyl alcohol 20 parts water 55 parts [Liquid C] Aluminum hydroxide 10 parts Zinc stearate 1 part 10% aqueous solution of polyvinyl alcohol 89 parts [Liquid A] [Liquid B] are mixed and stirred so that the weight ratio becomes 1: 3, and a thermosensitive color developing layer coating liquid. And fine quality paper with a thickness of 250μ after drying with a lab coating rod so that the applied amount will be 5.4 to 5.6 g / m ^2. After the thermosensitive coloring layer is provided, 7 parts of 20% aqueous solution of polyamide epichlorohydrin resin is added to 50 parts of C solution, and the overcoat layer coating solution is adjusted to give a coating amount of 3 g / m ² after drying. After coating and drying, the surface smoothness is 500-60.
A thermosensitive recording material was obtained by calendaring at 0 second. The color development side of the heat-sensitive recording material thus obtained was printed with an OP varnish (UV ink) manufactured by DIC using an RI tester printing machine, and DI was further applied to the back side of the heat-sensitive recording material.
Printing was performed using colored Cing blue (UV ink) manufactured by Company C.
Further, a polypropylene film having a thickness of 25 μm was laminated on the back side printing surface to obtain a heat-sensitive recording material for game card of Example 1.

[Example 2] [D liquid] consisting of the following components was mixed and stirred to prepare a coating solution for the undercoat layer, which was coated on the support of Example 1 so that the dry coating amount was 2 g / m ^2. A heat-sensitive recording material for game cards of Example 2 was obtained in the same manner as in Example 1. [D-liquid] Styrene / acrylic hollow particles 35% emulsion 25 parts Styrene / butadiene 45% latex 20 parts Water 55 parts

Example 3 The coating solution for overcoat layer used in Example 1 was coated on the back surface of the support at a dry coating amount of 1.5.
A heat-sensitive recording material for game cards of Example 3 was obtained in the same manner as in Example 1 except that coating and drying were performed so as to obtain g / m.

Comparative Example 1 A thermosensitive recording paper for game card of Comparative Example 1 was obtained in the same manner as in Example 1 except that the overcoat layer was removed.

Comparative Example 2 A thermosensitive recording material for game cards of Comparative Example 2 was obtained in the same manner as in Example 1 except that the polypropylene film laminate was omitted.

Table 1 shows the results of testing the heat-sensitive recording material obtained as described above by the following method. (1) Image density: In a thermal printing experimental device having a thin film head manufactured by Matsushita Electronic Parts Co., Ltd., head voltage 0.60 w / dot, 1 line recording time 10 msec / line, scanning line density 8 × 7.7 dots / mm The Hals width is 1.0 depending on the condition.
It is a value when printed in msec. (2) Plasticizer resistance: Three vinyl chloride wraps were placed on the printed surface of the image density test sample and the load (5 kg / 10 × 10 c) was applied.
m) The concentration after standing in a constant temperature layer at 40 ° C for 16 hours. (3) Printability: The value of the OP varnish surface gloss on the side of the color-developing layer measured with a Nippon Denshoku 1001DP gloss angle 100 °. The blue ink density on the back side is shown. (4) Appearance: Visual observation of back side The density value is the measurement result with Macbeth densitometer RD914 type, and the filter is with W-106.

[0025]

[Table 1]

[0026]

As is apparent from Table 1, the thermosensitive recording medium for game cards of the present invention is excellent in image density, storability and print quality. Further, it is a high-quality heat-sensitive recording material for game cards in which the printing quality is further improved by the resin film processing in appearance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example of a heat-sensitive recording material for game cards according to the present invention.

[Explanation of Codes] 1 Thermal recording material for game card 2 Support 3 Undercoat layer 4 Thermosensitive coloring layer 5 Overcoat layer 6 Printing layer 7 Backcoat layer 8 Printing layer 9 Resin film

Claims (3)

[Claims] 1. A thermosensitive color-developing layer containing a leuco dye and a color developer as main components and an overcoat layer containing a binder resin as a main component are sequentially laminated on a support surface having a paper thickness of 100 to 400 μm, and further on both sides. A heat-sensitive recording material for game cards, which carries out required printing and is laminated with a resin film on the back printing surface. 2. The heat-sensitive recording material for game cards according to claim 1, wherein an undercoat layer containing a filler as a main component is provided between the support and the heat-sensitive color forming layer. 3. A back coat layer containing a binder resin as a main component is provided between the support and the back side printing surface.
Alternatively, the heat-sensitive recording material for the game card of item 2.