JPH11348462A - Reversible thermal recording transfer foil, reversible thermal recording sheet and information display medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide information having a meaning in combination with a reversible display and a print display by sequentially laminating a release protective layer, a print display layer, a thermal recording layer, an intermediate layer, a coloring layer and an adhesive layer on a support, thereby simply and efficiently arranging the print display at the reversible display of an information display medium. SOLUTION: A release protective layer 12, a print display layer 13, a thermal recording layer 14, an intermediate layer 15, a coloring layer 16 and an adhesive layer 17 are sequentially laminated on a support 11 to form a reversible thermal recording transfer foil. As the support 11, a film or the like of a synthetic resin, a natural resin or the like such as a polyester, a polycarbonate or the like is used. The layer 12 simply transfers a reversible thermal recording medium from the support 11 to an information display medium. The high-molecular/low-molecular thermal recording layer 14 brings about presence or absence or an air gap between a polylmeric compound and an organic low-molecular compound because melting behaviors and solidifying behaviors of the polymeric compound and the organic low-molecular compound dispersed in a matrix of the polymeric compound are different according to temperatures with the result that an emulsification and a transparency are reversibly changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a membership card, an ID,
The present invention relates to an information display medium used for a card, a credit card, a cash card, an IC card, and the like, and particularly to an information display medium having a recording layer whose transparency reversibly changes depending on temperature.

[0002]

2. Description of the Related Art In recent years, a display medium using a reversible thermosensitive recording material has attracted attention. As a reversible thermosensitive recording material,
For example, phase-change recording materials and magneto-optical recording materials having light absorption properties, thermosensitive dye-based recording materials capable of developing and decoloring by combining a leuco dye with a developer and a decolorant, and a high-molecular compound and an organic low-molecular compound There are used a recording material that changes transparency by utilizing a difference in melting and solidification behavior, a recording material that uses a phase change of a polymer compound, a recording material in which liquid crystal is dispersed in a polymer compound, and the like.

[0003] In particular, there is an extremely high demand for cards capable of reversibly recording and erasing characters, symbols, figures, and the like for membership cards, ID cards, credit cards, cash cards, IC cards, and the like. For example, a heat-sensitive recording material comprising a mixture of a polymer compound and an organic low-molecular compound dispersed in the polymer compound, which is known from JP-A-5-85045, is mainly used as a reversible display material for these cards. It is used for

A card having a reversible display unit using these thermal recording techniques is, for example, a medium for displaying the number of acquired points, information guidance to members, etc. using a point card, a membership card, an IC card, or the like. The recording method and the erasing method are known.

As a method for producing these information display media, a method in which a heat-sensitive recording layer is directly provided on a card substrate by a printing method, a coating method, or the like is mainly adopted. In the case of plastic cards such as membership cards, ID cards, and IC cards, a method is also used in which a heat-sensitive recording layer is provided on another plastic support, and a sheet-shaped heat-sensitive recording medium is provided on the card via an adhesive or the like. Have been.

In recent years, when such a reversible display portion is provided on a card, it is not provided on the entire surface of the card.
There is an increasing demand for a so-called spot system in which a reversible display is provided only in a part of a card. When a spot-type reversible display section is provided on a card, the reversible display section is partially provided by transfer using a thermosensitive recording medium in the form of a transfer foil,
Generally, a method is used in which a sheet-shaped thermosensitive recording medium is cut to a required size and partially provided by lamination.

However, when manufactured by the above-described method, the transfer / sticking step of providing the heat-sensitive recording medium on the card comes after the printing step, so that printing cannot be performed on the reversible display section. Also, if the printing process is brought after the transfer / sticking process, it is necessary to print in the form of a small card or to print on a deformed plastic sheet after lamination, making the printing process complicated and efficient. It will be bad.

If print display cannot be performed on the reversible display unit, only the reversible display unit has a different background from other print display units. There is a problem that only very uncomfortable designs can be obtained.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a print display section in a reversible display section of an information display medium simply and efficiently. . Still another object of the present invention is to provide a new information display medium combining reversible display and print display.

[0010]

According to the present invention, in order to solve this problem, a release protective layer, a printed display layer, a thermosensitive recording layer, an intermediate layer, a colored layer, and an adhesive layer are sequentially laminated on a support. A reversible thermosensitive recording transfer foil is provided. In addition, a colored layer, an intermediate layer, a thermosensitive recording layer, a printed display layer,
Provided is a reversible thermosensitive recording sheet characterized in that a protective layer is sequentially laminated and an adhesive layer is laminated on the other surface of the support. Further, the present invention provides an information display medium characterized in that a reversible display section is provided by transferring or attaching the reversible thermosensitive recording transfer foil or the reversible thermosensitive recording sheet.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
FIG. 1 shows an example of the reversible thermosensitive recording transfer foil of the present invention.
On a support 11, a release protective layer 12, a printed display layer 13, a thermosensitive recording layer 14, an intermediate layer 15, a colored layer 16, and an adhesive layer 17 are sequentially formed.

The support 11 is selected from a synthetic resin such as polyethylene terephthalate, polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, polystyrene, etc., a film of natural resin, synthetic paper, paper, or the like. A complex or the like selected and combined can be used. These supports have excellent physical properties and a thickness of 4 μm in consideration of workability and operability.
From 50 to 50 μm, preferably 16 μm
And a thickness of about 38 μm.

The releasable protective layer 12 is for easily transferring the reversible thermosensitive recording medium from the support 11 to the information display medium.
It serves to protect the thermosensitive recording layer 14 from stimuli such as chemicals, and can be provided with a film thickness of about 0.2 to 10 μm by a printing method, a coating method, or the like.

Examples of the resins used include acrylic resins, urethane resins, vinyl chloride-vinyl acetate copolymer resins, polyester resins, melamine resins,
A conventionally known thermoplastic resin such as an epoxy resin, a polystyrene resin, and a polyimide resin, a thermosetting resin, an ultraviolet ray or an electron beam curing resin may be used alone or as a mixture. Further, in order to improve the durability and prevent sticking during recording, a curing agent for crosslinking the resin, waxes such as polyethylene washes, carnauba wax, silicon wax, or calcium carbonate, zinc stearate, silica, alumina, talc, etc. And fats and oils such as silicone fats and oils can be added to the extent that transparency is not impaired. In addition, when recording / erasing with a thermal head, a hollow filler, beads or the like can be added to the extent that transparency is not impaired in order to control heat conductivity.

The print display layer 13 is provided partially for displaying fixed information, and is provided with the peelable protective layer 12.
The ink may be provided using any ink, paint, pigment, or dye as long as the material has good adhesiveness to the heat-sensitive recording layer 14. Further, as a forming method, any printing / printing means such as a normal printing method, a sublimation transfer method, an ink jet method and the like can be used.

The heat-sensitive recording layer 14 is provided for performing reversible display. For example, a phase-change recording material or a magneto-optical recording material having light absorption characteristics, a leuco dye, a developer, and a decolorant A heat-sensitive dye-based recording material (hereinafter, referred to as a leuco type in the present invention) that develops and decolors in combination with the above, and changes the transparency by utilizing the difference in the melting and coagulation behavior of the polymer compound and the organic low-molecular compound. Recording materials (hereinafter,
In the present invention, a recording material utilizing a phase change of a high molecular compound, a recording material in which liquid crystal is dispersed in a high molecular compound, and the like are used. The two types of recording material, polymer and low molecular weight type, are described in detail.

The high-molecular / low-molecular type thermosensitive recording layer 14 is formed of a polymer compound and an organic low-molecular compound dispersed in a matrix of the high-molecular compound due to a difference in melting and coagulation behavior depending on the temperature. The presence or absence of voids between the organic low-molecular compounds causes the cloudiness / transparency to change reversibly, and the film thickness is 4 μm to 20 μm by printing, coating or the like.
It can be provided on the order of μm.

Examples of the organic low-molecular compound dispersed in the heat-sensitive recording layer 14 include fatty acids, fatty acid derivatives, and alicyclic organic acids. More specifically, saturated or unsaturated compounds, dicarboxylic acids, and the like. Those containing esters, amides and the like are used, but are not particularly limited. Specific examples of the saturated fatty acids include undecanoic acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, nanodecanoic acid, arachinic acid, behenic acid, lignoceric acid,
Cerotic acid, montanic acid, melicic acid and the like can be mentioned, and specific examples of unsaturated fatty acids include oleic acid, elaidic acid, linoleic acid, sorbic acid, stearic acid and the like. Further, it is also possible to apply one of these or a mixture of two or more of them.

The polymer compound used for the heat-sensitive recording layer 14 may be an acrylic resin, a urethane resin, a polyester resin, a cellulose acetate resin, a nitrocellulose resin, a vinyl chloride resin, a vinyl acetate resin, or the like. Mixtures or copolymers are used. In addition, in order to control the transparent temperature range of the reversible thermosensitive recording layer, 0.1% to 20% by weight of a resin plasticizer, a high boiling point solvent and the like can be added to the polymer compound. Further, in order to improve the repetitive print erasure resistance of the reversible thermosensitive recording layer, a curing agent capable of three-dimensional crosslinking corresponding to the polymer compound, a crosslinking agent, etc., are added in an amount of 0.5% to 10% by weight based on the polymer compound. can do.

On the other hand, the leuco-type thermosensitive recording layer 14 is a thermochromic composition utilizing a reversible color-forming reaction between a leuco compound dispersed in a matrix of a polymer compound and a color-reducing agent. 4 μm to 20
It can be provided on the order of μm.

Typical colorless or light-colored leuco compounds used in the heat-sensitive recording layer are typically those used in pressure-sensitive recording paper, heat-sensitive recording paper, photosensitive pressure-sensitive paper, current-carrying heat-sensitive recording paper, heat-sensitive transfer paper, and the like. Xanthenes, spiropyrans, lactones, fluorans, sultones and the like having a partial skeleton such as lactone, sultone and spiropyran are used, but are not particularly limited. As a specific example,
3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide, 3,3-bis (p-dimethylaminophenyl) phthalide, 3,3-bis (1,2-dimethylindol-3-yl) ) -6-dimethylaminophthalide, 3-dimethylamino-6-chloro-7-methylfluoran, 3,3-bis (9-ethylcarbazole-3
-Yl-5-dimethylaminophthalide, 3-dimethylamino-7-dibenzylaminofluoran, 3-diethylamino-7-chlorofluoran, 3-diethylamino-
6-methyl-7-anilinofluoran, 3-piperidino-6-methyl-7-anilinofluoran, 3- (n-ethyl-n-tolyl) amino-6-methyl-7-anilinofluoran, 3 -Dibutylamino-6-methyl-7-anilinofluoran, 3- (n-ethyl-n-isoamyl)
Amino-6-methyl-7-anilinofluoran, 3-
(N-ethyl-n-tetrahydrofuryl) amino-6
Methyl-7-anilinofluoran and the like can be mentioned, and they are used alone or as a mixture.

On the other hand, the color-developing agent is a compound having both a color-developing effect and a color-reducing effect on a leuco compound by reversibly releasing protons under the action of thermal energy. That is,
It has both an acidic group consisting of a phenolic hydroxyl group or a carboxyl group and a basic group consisting of an amino group, and becomes acidic or basic due to a difference in heat energy to cause the leuco compound to develop or decolor. The basic group may be present as a functional group or may be present as a part of a compound. In addition, by using a color-developing agent having either a functional group of an acidic group or a basic group of the color-developing agent, only a color-forming effect can be exhibited. Examples of the color-reducing agent having an acidic group and a basic group as functional groups include aminobenzoic acids, hydroxyaminobenzoic acids, aminophenols, aminonaphthoic acids, and nicotinic acids. Specific examples include m-aminobenzoic acid, o-
Aminobenzoic acid, 4-amino-3-methylbenzoic acid, 3
-Amino-4-methylbenzoic acid, 2-amino-5-ethylbenzoic acid, 3-amino-4-butylbenzoic acid, 4-amino-3-methoxybenzoic acid, 3-amino-4-ethoxybenzoic acid, 2 -Amino-5-chlorobenzoic acid, 4-amino-3-bromobenzoic acid, 2-amino-2-nitrobenzoic acid, 4-amino-3-nitrobenzoic acid, 3-amino-4-nitrilebenzoic acid, amino Salicylic acid, diaminobenzoic acid, 2-methyl-5-aminonaphthoic acid, 3-ethyl-4-amininaphthoic acid, nicotinic acid, isonicotinic acid, 2-methylnicotinic acid, 6-chloronicotinic acid and the like. Further, those having a basic group as a part of the salt compound include salts or complex salts of a compound having a phenolic hydroxyl group or a carboxyl group and a compound having an amino group, such as hydroxybenzoic acids, hydroxysalicylic acids, and gallic. Salts or complex salts of acids such as acids and bisphenolacetic acid with bases such as aliphatic amines, phenylalkylamines and triallylalkylamines are exemplified. Specific examples thereof include p-hydroxybenzoic acid-alkylamine salt, p-hydroxybenzoic acid-phenylalkylamine salt, m-hydroxybenzoic acid-alkylamine salt, 2,4-dihydroxy-alkylamine salt, 4,5- Dihydroxybenzoic acid-trialkylamine salt, 4,5-dihydroxybenzoic acid-tolylalkylamine salt, p-hydroxybenzoic acid methyl-alkylamine salt, p-hydroxybenzoic acid stearyl-alkylamine salt, gallic acid-alkylamine salt And stearyl gallic acid-alkylamine salt, bisphenolacetic acid-alkylamine, bisphenolacetic acid octyl-alkylamine salt and the like. Further, it is also possible to apply one of these or a mixture of two or more of them.

As the polymer compound, acrylic resin,
A resin such as a polyester resin, a polyurethane resin, polyurea, melamine, polycarbonate, polyamide, polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl chloride, polyvinyl butyral, etc. may be used alone, mixed or copolymerized. In addition, in order to improve the repetitive print erasure resistance of the reversible thermosensitive recording section, a three-dimensionally cross-linking curing agent corresponding to the resin base material, a cross-linking agent, etc., for the resin base material,
0.5% to 10% by weight can be added. Further, an ultraviolet absorber having relatively high compatibility with the leuco compound can be added to improve the resistance.

The intermediate layer 15 includes the colored layer 16 and the heat-sensitive recording layer 1.
4 is a reinforcing layer provided for bonding 4 and has a thickness of 0.2 to 10 μm by a printing method, a coating method, or the like.
Degree can be provided.

As the material to be used, for example, conventionally known ultraviolet rays such as (meth) acrylate resins, urethane (meth) acrylate resins, epoxy (meth) acrylate resins, and phosphoric acid-modified (meth) acrylate resins. Or an electron beam curable resin is used alone or as a mixture, and further, if necessary, an acrylic resin, a urethane resin, a vinyl chloride resin-vinyl acetate copolymer resin, a polyester resin, a melamine resin, an epoxy resin, Conventionally known thermoplastic resins such as polystyrene resins and polyimide resins, and thermosetting resins are used as a mixture.

The coloring layer 16 is provided to improve the contrast between the image data recording portion and the non-recording portion of the thermosensitive recording layer. For example, an ink obtained by dispersing and dissolving a color pigment, a dye, and the like in a polymer compound can be provided to a thickness of about 0.5 μm to 5 μm by a printing method or a coating method. In addition, a metal material having high reflectivity, a high refractive index transparent material having both reflectivity and transmissivity, etc.
The thickness can be set to about 0.03 μm to 0.08 μm by a thin film forming means such as a sputtering method and an ion plating method. Furthermore, various transfer sheets can be provided by about 0.5 μm to 2 μm by a lamination method.

As the polymer compound, polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, polyester resin, polyethylene resin, acrylic resin and the like are used alone or in combination. , A polyvinyl chloride-vinyl acetate copolymer and a polyester resin.

As the metal material having high reflectivity, for example, Al, Cr, Sn, Ni, Cu or the like is used. As the high refractive index transparent material, for example, Ti
O ₂ , ZnS, SiO, MgO, ZrO _{2 and the} like are used. Further, the color tone and the like can be adjusted by using the used materials in combination.

The adhesive layer 17 is for integrating the heat-sensitive recording medium with the information display medium, and is made of a polymer material having a softening point of 150 ° C. or less by a printing method or a coating method.
It can be applied and provided at 5 to 10 μm.

As the polymer material, polyvinyl chloride,
Polyvinyl acetate, polyester resin, polyethylene resin, polyurethane resin, acrylic resin alone, mixed or copolymerized, elastomer, etc. are used. Preferably, polyvinyl chloride, polyurethane resin, or polyester resin is used.

By using the reversible thermosensitive recording sheet in the form of the transfer foil described above and transferring the reversible thermosensitive recording medium by a known hot stamping method, the print display section can be simplified on the reversible display section of the information display medium. Can be provided efficiently.

FIG. 2 shows an example of the reversible thermosensitive recording sheet according to the present invention. A colored layer 26, an intermediate layer 25, a heat-sensitive recording layer 24, a printed display layer 23, and a protective layer 22 are sequentially formed on a support 21, and an adhesive layer 27 is formed on the other surface of the support 21. I have.

The materials used for the support 21, the colored layer 26, the intermediate layer 25, the heat-sensitive recording layer 24, and the print display layer 23 include
The same reversible thermosensitive recording transfer foil can be used.

The protective layer 22 serves to protect the heat-sensitive recording layer 14 from physical rubbing of a thermal head or the like, or stimulation from sweat, chemicals, or the like. .2 to 10 μm. As for the material to be used, the same material as the release protective layer 12 of the reversible thermosensitive recording transfer foil can be used.

The adhesive layer 27 is for integrating the thermosensitive recording medium with the information display medium, and it is necessary to use a good adhesive for both the support 21 and the information display medium. Specifically, a printing method using a polymer material having a softening point of 150 ° C. or lower,
It can be applied by coating to a film thickness of 0.5 to 10 μm. As for the material to be used, the same material as the adhesive layer 17 of the reversible thermosensitive recording transfer foil can be used.

By using the reversible thermosensitive recording sheet in the sheet form described above and transferring the reversible thermosensitive recording medium by a known laminating method, the print display section can be easily converted to the reversible display section of the information display medium. Can be provided well.

FIG. 3 shows an example of an information display medium according to the present invention. The print display unit 32 is present in the reversible display unit 31, and has a structure in which the print display unit 32 and the reversible display unit 31 are integrated. In the conventional information display medium shown in FIG. 4, as described above, it is difficult to perform print display on the reversible display unit 41, and therefore, the reversible display unit 41 and the print display unit 4 are not displayed.
2 cannot take an integral structure.

That is, since printing cannot be performed on the reversible display section 41, only the reversible display section 41 has a different background from that of the print display section 42. It can be understood that if there is a characteristic, only a design with a very uncomfortable feeling can be obtained.

According to the information display medium of the present invention, the reversible display unit 31 and the print display unit 32 are integrated, and the print display unit 32 can be provided on the reversible display unit 31. It can be seen that there is no design.

The following two methods are typical examples of the method of producing the display medium. When the reversible thermosensitive recording transfer foil of claim 1 is used, it is superimposed on the base material of the information display medium, and after pressing and transferring it with a heated die, the support 11 is removed. It can be made by a so-called conventionally known hot stamping method.

When a reversible thermosensitive recording sheet is used, it is cut into a predetermined size, placed on a base material of an information display medium, sandwiched from above and below by a heated hot plate, and adhered by pressing. Can be formed by a so-called conventionally known laminating method.

[0042]

<Example 1> A coating of a release protective layer was applied to a support 11 made of a transparent polyethylene terephthalate (hereinafter referred to as PET) film having a thickness of 25 µm by a gravure method at a drying temperature of 100 ° C and a coating thickness of 4 µm, and peeled. Protective layer 12
Was formed. This upper layer is printed by a screen printing method at a drying temperature of 80 ° C. and a print thickness of 3 μm, and the print display layer 1 is printed.
3 was formed. A heat-sensitive recording coating composed of an organic low-molecular compound dispersed in a polymer compound was applied to the upper layer by a gravure method at a drying temperature of 130 ° C. and a coating thickness of 9 μm to form a heat-sensitive recording layer 14. The upper layer is coated with an intermediate layer paint by a high pressure mercury lamp using a gravure method at 500 mJ / cm ² (2
The film was cured with an energy of 0.5 nm and an intermediate layer 15 having a coating thickness of 4 μm was formed. An Al layer having a thickness of 0.05 μm was formed on the upper layer using a vacuum evaporation method to provide a colored layer 16.
The adhesive layer paint is applied to the upper layer using a gravure method at a drying temperature of 1
The adhesive layer 17 was formed by coating at 00 ° C. and a coating thickness of 3 μm to obtain a reversible thermosensitive recording transfer foil.

This reversible thermosensitive recording transfer foil was transferred to a card support (not shown) made of a white PVC sheet having a total thickness of 760 μm and prepared in three layers in advance, in a size of 10 mm long × 40 mm wide by hot stamping. Temperature 2
Transfer was performed under the conditions of 30 ° C. and 0.5 seconds to form a card.
The obtained card as an information display medium can be printed with an applied energy of 0.4 mJ / dot using a thermal head, and further, the print data can be erased with an applied energy of 0.2 mJ / dot using a thermal head. Was. Further, the number of times of repeated printing was 100 or more, and a card as a highly practical information display medium in which the reversible display unit 31 and the print display unit 32 were integrated was obtained.

(Coating for release protective layer) Acrylic resin 50 parts by weight Teflon filler 1.5 parts by weight Calcium carbonate 1.5 parts by weight Toluene 70 parts by weight Methyl ethyl ketone 70 parts by weight (Printing display layer ink) Polyester white ink 100 parts by weight Isocyanate curing agent 5 parts by weight Diluent for screen ink 20 parts by weight (Heat-sensitive recording layer paint) Behenic acid 16 parts by weight Sebacic acid 4 parts by weight Vinyl chloride-vinyl acetate copolymer resin 12 parts by weight Tetrahydrofuran 60 parts by weight Toluene 20 parts by weight (intermediate) Layer paint) Dipentaerythritol hexaacrylate 30 parts by weight Benzophenone photoinitiator 1 part by weight Isopropyl alcohol 70 parts by weight (Adhesive paint) Polyester resin 40 parts by weight Toluene 40 parts by weight Methyl ethyl ketone 40 parts by weight

Example 2 A colored layer 26 was formed by forming a 0.05 μm thick Al layer on a support 21 made of a transparent polyethylene terephthalate (PET) film having a thickness of 38 μm by vacuum evaporation. The intermediate layer paint is applied to the upper layer by a high pressure mercury lamp using a gravure method at 500 mJ / cm.
² Cured with energy of 205nm, coating thickness 4μm
Was formed. A heat-sensitive recording coating composed of a low-molecular organic compound dispersed in a polymer compound was applied to the upper layer by a gravure method at a drying temperature of 130 ° C. and a coating thickness of 9 μm to form a heat-sensitive recording layer 24. The upper layer was printed by a screen printing method at a drying temperature of 80 ° C. and a print thickness of 3 μm to form a print display layer 23. The upper layer is coated with a protective layer paint using a gravure method at a drying temperature of 100 ° C. and a coating thickness of 4 μm.
m to form a protective layer 22. Further, the adhesive layer coating material was applied on the other surface of the support 21 by a gravure method at a drying temperature of 100 ° C. and a coating thickness of 3 μm to form an adhesive layer 27, thereby obtaining a reversible thermosensitive recording sheet.

This reversible thermosensitive recording sheet is 10 mm long ×
It is cut to a size of 40 mm in width, and is laminated on a card support (not shown) made of a white PVC sheet having a total thickness of 760 μm and prepared in three layers in advance by a laminating method at a laminating temperature of 120 ° C., a time of 30 min, and a pressure of 20 kgf /.
It was laminated into a card under the condition of cm ² . The obtained card as an information display medium can be printed with an applied energy of 0.4 mJ / dot using a thermal head, and further, the print data can be erased with an applied energy of 0.2 mJ / dot using a thermal head. Was. Also,
The number of repetitive printings was 100 or more, and a card as a highly practical information display medium in which the reversible display unit 31 and the print display unit 32 were integrated was obtained.

(Protective layer paint) Acrylic resin 50 parts by weight Teflon filler 1.5 parts by weight Calcium carbonate 1.5 parts by weight Toluene 70 parts by weight Methyl ethyl ketone 70 parts by weight (Printing display layer ink) Polyester white ink 100 parts by weight Isocyanate 5 parts by weight of curing agent 20 parts by weight of diluent for screen ink (heat-sensitive recording layer coating) 16 parts by weight of behenic acid 4 parts by weight of sebacic acid 12 parts by weight of vinyl chloride-vinyl acetate copolymer resin 60 parts by weight of tetrahydrofuran 20 parts by weight of toluene (intermediate layer) Paint) dipentaerythritol hexaacrylate 30 parts by weight benzophenone photoinitiator 1 part by weight isopropyl alcohol 70 parts by weight (adhesive paint) polyester resin 40 parts by weight toluene 40 parts by weight methyl ethyl ketone 40 parts by weight

<Embodiment 3> Regarding the following information display medium,
The reversible thermosensitive recording sheet of Example 2 was used. FIG. 5 shows a print display pattern, a reversible display pattern, and an information display medium. Printed display layer 2 provided by screen printing
In the print display pattern 51 of No. 3, six vertical lines having a thickness of 0.2 mm as shown in FIG. 5A are formed in the shape of a river, and a "start" character is displayed above the second vertical line. Use a pattern in which "hit" characters are formed below the vertical line of the book,
Printing was performed by a winding screen printing method at a drying temperature of 80 ° C. and a print thickness of 3 μm to form a print display layer 23.

The reversible thermosensitive recording sheet in the form of a sheet provided with the print display layer 23 is cut into a size of 50 mm long × 50 mm wide, and is made of a white PVC sheet having a total thickness of 760 μm and having a total thickness of 760 μm prepared in advance. Lamination temperature 1 on card support (not shown) by lamination method
A card was formed by laminating under the conditions of 20 ° C., a time of 30 min, and a pressure of 20 kgf / cm ² to obtain an information display medium 62 as shown in FIG.

Using a thermal head on this information display medium 52 at an applied energy of 0.4 mJ / dot, FIG.
The reversible display pattern 63 as shown in -C was printed, and the information display medium 54 as shown in Fig. 5-D was obtained.

Further, the reversible display pattern 53 is erased at an applied energy of 0.2 mJ / dot by using a thermal head for the information display medium 54, and subsequently, at an applied energy of 0.4 mJ / dot by using a thermal head. 5
A reversible display pattern 55 as shown in -E was printed, and an information display medium 56 as shown in Fig. 5-F was obtained.

The information display medium 64 displays information on which the lottery has been missed, and the information display medium 56 displays information on which the lottery has hit. Such an information display medium can be used, for example, as a shopping card in a shopping arcade, and a new information display medium with a high eye catch effect, which combines reversible display and print display, can be provided.

[0053]

As described above, according to the present invention, as a reversible thermosensitive recording transfer foil / sheet for transferring / sticking to an information display medium, a reversible thermosensitive recording having a printed display layer integrated therewith. By using a sheet, a print display unit can be easily and efficiently provided on a reversible display unit of an information display medium. Further, by using the information display medium, displaying one meaningful information by a combination of the print information of the print display unit and the reversible information of the reversible display unit, and by changing the reversible information of the reversible display unit, By displaying information having different meanings, a novel information display medium having a high eye catching effect can be provided.

[0054]

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a cross-sectional structure of one embodiment of a reversible thermosensitive recording transfer foil of the present invention.

FIG. 2 is an explanatory view showing a cross-sectional structure of one embodiment of the reversible thermosensitive recording sheet of the present invention.

FIG. 3 is a plan view showing an example of the information display medium of the present invention.

FIG. 4 is a plan view showing an example of a conventional information display medium.

FIG. 5 is an explanatory diagram showing one embodiment of the information display medium of the present invention.

[Explanation of symbols]

Support: 11, 21 Peeling protection layer: 12 Printing display layer:
13, 23 Heat-sensitive recording layer ... 14, 24 Intermediate layer ... 15, 25 Color layer ... 16, 26 Adhesive layer ... 17, 27 Protective layer ... 22 Reversible display section ... 3
1, 41, 51 print display section 32, 42, 52 print display pattern 5
1 Information display medium 52, 54, 56 Reversible display pattern 53, 55

Claims (3)

[Claims] 1. A reversible thermosensitive recording transfer foil comprising a support and a release protective layer, a printed display layer, a thermosensitive recording layer, an intermediate layer, a colored layer, and an adhesive layer laminated in this order. 2. A colored layer, an intermediate layer, a heat-sensitive recording layer,
A reversible thermosensitive recording sheet comprising a printing display layer and a protective layer sequentially laminated, and an adhesive layer laminated on the other surface of the support. 3. An information display medium comprising a reversible thermosensitive recording transfer foil or a reversible thermosensitive recording sheet transferred or adhered thereon to provide a reversible display portion.