JP2976370B2 - Recording material for thermal transfer of resin melt type ink - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording material for thermally transferring a resin-melt ink from a transfer material, and more particularly to a recording material having an image receiving layer formed on a support. The image receiving suitability of the resin melt type ink is good,
A recording material that has excellent resistance to falsification of prints obtained by thermally transferring resin-melted ink from a transfer material, has excellent absorption properties for stamping inks, and has excellent resistance to falsification of markings by stamping inks. provide.

[0002]

2. Description of the Related Art A recording material used for printing on a recording material by thermally transferring the resin melting type ink from a transfer material is provided with an image receiving layer in order to enhance the image receiving suitability of the resin melting type ink as a transfer ink. What is provided on various supports is used, and various proposals have been made for the image receiving layer formed on the surface of the support.

[0003] However, in a conventional recording material of this type, which is provided with an image receiving layer composed of a coating layer of a water-based coating agent which does not cause a problem such as environmental pollution, for example, various types of recording materials are used. Sufficient fixing performance of resin-melted ink required for transportation ticket paper, etc., excellent falsification resistance of prints formed with this resin-melted ink, and resin-melted ink by thermal transfer There is one that satisfies all the requirements such as good absorption of the stamp ink when stamping with the stamp ink together with printing of the stamp, and excellent tampering resistance of the stamp with this stamp ink. Not.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording material for thermally transferring a resin-melted ink from a transfer material, which is a water-based coating agent which does not cause problems such as environmental pollution. It has an image receiving layer consisting of a coating layer according to the present invention, and has good ink image acceptability when thermally transferring resin-melted ink from a transfer material. It is an object of the present invention to provide a recording material which is excellent, has good absorbability of the stamp ink, and has excellent resistance to falsification of the stamp by the stamp ink.

[0005]

The above object can be attained by a recording material for thermally transferring the resin-melted ink of the present invention having the following configuration.

That is, a recording material for thermally transferring the resin-melt ink of the present invention includes a support and an image receiving layer formed on one surface of the support. An organic pigment composed of spherical particles having an average particle diameter of 1 to 5 μm, amorphous silica having a specific surface area of 200 to 400 m ² / g, a polyamine-based cationic resin as a dye fixing agent, and a binder, and the binder A water-based coating agent using a mixture of a polyvinyl alcohol, starch, or a polymer compound composed of a derivative thereof, and a thermoplastic resin with an aqueous emulsion of a nonionic or cationic thermoplastic resin. It consists of layers.

In the recording material for thermally transferring the resin-melt ink of the present invention having the above structure, the organic pigment composed of spherical particles having an average particle diameter of 1 to 5 μm used in the image receiving layer of the recording material is benzoguanamine. It is preferably a formaldehyde condensate.

In the recording material having the above-described structure for thermally transferring the resin-melt ink of the present invention, the amorphous silica used in the image receiving layer of the recording material has an average particle diameter of 1 to 3.
8 μm is preferred.

Further, in the recording material for thermally transferring the resin-melted ink of the present invention having the above-described structure, a magnetic recording layer made of an aqueous coating agent is provided on the other surface of the support of the recording material. Can be done. The magnetic recording layer may be such that the magnetic recording layer is partially provided on the support in, for example, a stripe shape or a lattice shape.

The average particle diameter of the organic pigment or the amorphous silica composed of the above-mentioned spherical particles is measured by a median diameter using a Coulter counter, and the specific surface area of the amorphous silica is determined by a BET method. Things.

In the recording material for thermally transferring the resin-melted ink of the present invention, each solid component in the image receiving layer of the recording material has the following functions and characteristics.

Organic Pigments Consisting of Spherical Particles Organic pigments consisting of spherical particles have a function of maintaining the surface strength of an image receiving layer, which cannot be achieved by amorphous silica, and an effect of thermal transfer of a resin-melted ink. It has the effect of suppressing the decrease in printing density and the printing density due to the printing stamp ink, and even if this organic pigment is blended in the receiving layer, the image receiving layer's image-receiving suitability for resin-melt transfer ink and printing stamp ink may be reduced. It has characteristics in that there is no. If the particle diameter of the organic pigment composed of the spherical particles is too large, the reproducibility of the dots of the resin-melted ink of the image receiving layer is deteriorated, and if the particle diameter is too small, the function of improving the surface strength of the image receiving layer is improved. Is not enough. Therefore, those having an average particle diameter of 1 to 5 μm are used. If the amount of the organic pigment composed of the spherical particles is too large, the absorbing performance of the stamp ink is reduced.

Amorphous silica Amorphous silica improves the dot reproducibility of a resin-fused transfer ink of an image receiving layer,
In addition, the absorption performance of the stamp ink is improved. If the specific surface area of the amorphous silica is too large, the strength of the image receiving layer itself becomes insufficient, and the image receiving layer may be peeled off when printing on a recording material.
On the other hand, if the specific surface area of the amorphous silica is too small, the effect of improving the absorption performance of the stamp ink is not sufficient. For this reason, amorphous silica having a specific surface area of 200 to 400 m ² / g is used. If the amount of the amorphous silica is too large, the surface strength of the image receiving layer decreases, and the printing density of the resin-melt transfer ink and the printing density of the printing stamp ink decrease.

Polyamine Cationic Resin as Dye Fixing Agent Polyamine cationic resin as a dye fixing agent is a resin usually used as a dye fixing agent for direct dyes, for example, dicyandiamide / diethylenetriamine polycondensate Can be used. The polyamine-based cationic resin as a dye fixing agent provides alcohol resistance to printing of a resin-melt transfer ink and printing with a stamp ink, and this is a polyamine-based cationic resin as a dye fixing agent. It is presumed that this is caused by the formation of some kind of chemical bond between the resin and the colorant in the resin-melt transfer ink or the stamp ink. As a result, alcohol resistance is imparted to printing with the resin-melt transfer ink and stamping with the stamping ink formed on the image receiving layer, so that the falsification resistance can be obtained.

The dye-fixing agent may be a non-polyamine-based cationic resin having a dye-fixing function, such as a non-polyamine-based cationic resin generally used as a dye-fixing agent in an image receiving layer of an ink jet recording paper. Even if trade name: Sumireze 1001) is used, it is not possible to impart alcohol resistance to printing with the above-described resin-melt transfer ink or stamping with the stamp ink, and the tamper resistance of these printing and stamping is obtained. I can't.

Binder A polymer compound comprising polyvinyl alcohol, starch, or a derivative thereof in the binder imparts alcohol resistance to the image receiving layer. In addition, even if a polyamine-based cationic resin as a dye fixing agent is contained in the image receiving layer, if the high molecular compound composed of polyvinyl alcohol, starch, or a derivative thereof is not present, the image receiving layer is provided with alcohol resistance. I can't. Further, a nonionic or cationic thermoplastic resin used in the form of an emulsion imparts water resistance to the image receiving layer. When an anionic thermoplastic resin is used as the thermoplastic resin used to obtain the water resistance of the image receiving layer, coagulation between the anionic thermoplastic resin and a polyamine-based cationic resin as a dye fixing agent occurs. This makes it impossible to obtain a water-based coating agent having good coating suitability.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION In a recording material for thermally transferring the resin-melt ink of the present invention having the above-mentioned structure, the following polyvinyl alcohol derivatives usable as a binder for an image receiving layer of the recording material are as follows. Is mentioned.

For example, completely or partially saponified polyvinyl alcohol, acetoacetylated polyvinyl alcohol having an acetoacetyl group introduced by reacting diketene with polyvinyl alcohol, etc., polyvinyl alcohol and fumaric acid, phthalic anhydride, trimellitic anhydride, A reaction product obtained by reacting a polycarboxylic acid such as itaconic acid,
And an esterified product of these reaction products, obtained as a saponified product of a copolymer of vinyl acetate and an ethylenically unsaturated carboxylic acid such as maleic acid, fumaric acid, itaconic acid, crotonic acid, acrylic acid, or methacrylic acid. Carboxy-modified polyvinyl alcohol, vinyl acetate and ethylene sulfonic acid, sulfonic acid-modified polyvinyl alcohol obtained as a saponified copolymer of olefin sulfonic acid such as allyl sulfonic acid or a salt thereof, vinyl acetate and ethylene,
Olefin-modified polyvinyl alcohol obtained as a saponified product of a copolymer with olefins such as propylene, isobutylene, α-octene, α-dodecene, α-octadodecene, copolymerization of vinyl acetate with nitriles such as acrylonitrile and methacrylonitrile. Nitrile-modified polyvinyl alcohol obtained as a saponified polymer, amide-modified polyvinyl alcohol obtained as a saponified copolymer of vinyl acetate and amides such as acrylamide and methacrylamide, copolymer of vinyl acetate and N-vinylpyrrolidone And pyrrolidone-modified polyvinyl alcohol obtained as a saponified polymer.

Examples of starch derivatives which can also be used as a binder in the image receiving layer include oxidized starch, etherified starch, dialdehyde starch, and esterified starch.

Further, in the recording material for thermally transferring the resin-melt type ink of the present invention having the above-mentioned structure, the following solid products can be used as solid components which can be used in the image receiving layer of the recording material. No.

(1) Organic pigment composed of spherical particles having an average particle diameter of 1 to 5 μm: Spherical particles of benzoguanamine formaldehyde condensate (average particle diameter 2 μm, Nippon Shokubai Co., Ltd .: Eposter M)
S), spherical particles of benzoguanamine formaldehyde condensate (average particle diameter 4 μm, Nippon Shokubai Co., Ltd .: Eposter M3)
0), spherical particles made of urea resin (average particle diameter 5 μm, Mitsui Toatsu Chemicals, Inc .: Eupearl C-122) (2) Amorphous silica: amorphous silica having a specific surface area of 260 m ² / g (average particle diameter) 2.5 μm, Tokuyama Corp .: Fine Seal X-37B), amorphous silica having a specific surface area of 290 m ² / g (average particle diameter 6.0 μm, Tokuyama Corp .: Fine Seal X-60), (3) Polyamine-based cationic resin as dye fixing agent: Polyamine-based cationic resin (Sanyo Chemical Co., Ltd .: Sunfix PAC-7), polyamine-based cationic resin (Sanyo Chemical Co., Ltd .: Sunfix 555) ( 4) Binder (water-based emulsion of thermoplastic resin): Water-based emulsion of ethylene-vinyl acetate copolymer (nonionic) (Sumitomo Chemical Co., Ltd .: SF (Sumika Flex) 40)
1), Aqueous emulsion of acrylic polymer (cationic) (Daido Kasei Co., Ltd .: E-4622), Aqueous emulsion of styrene-acrylic copolymer (cationic) (Sumitomo Chemical Co., Ltd .: S-3911) )

In the recording material for thermally transferring the resin-melted ink of the present invention, the mixing ratio of the solid components for forming the image receiving layer of the recording material is preferably as follows.

About 40 to 900 parts by weight of amorphous silica is mixed with 100 parts by weight of organic pigment composed of spherical particles. When 5 parts by weight or more of a polyamine-based cationic resin as a dye fixing agent is blended with respect to 100 parts by weight of the total amount of the organic pigment and the amorphous silica, the action of the polyamine-based cationic resin becomes remarkable. Become. However, even if the polyamine-based cationic resin as a dye fixing agent is added in an amount exceeding 40 parts by weight based on 100 parts by weight of the total amount of the organic pigment and the amorphous silica, the polyamine-based cationic resin can be used. No improvement in the function corresponding to a high blending ratio of Nb is obtained.

The binder used as a mixture of a high molecular compound comprising polyvinyl alcohol, starch, or a derivative thereof and a thermoplastic resin formed from an aqueous emulsion of a nonionic or cationic thermoplastic resin is used as a binder. It is preferable that the total amount of both the plastic resin and the organic pigment is 40 parts by weight or more in terms of a solid component based on 100 parts by weight of the total amount of the organic pigment composed of spherical particles and the amorphous silica.

Further, the polyvinyl alcohol, starch,
Or, in a binder comprising a mixture of a polymer compound comprising a derivative thereof and a thermoplastic resin, if the proportion of the polymer compound is too high, the water resistance of the image receiving layer becomes insufficient, and also nonionic or cationic If the proportion of the thermoplastic resin is too high, the alcohol resistance of the image receiving layer becomes insufficient. As a result, as a binder,
In terms of solid components, 20 to 50 parts by weight of a thermoplastic resin of an aqueous emulsion of a nonionic or cationic thermoplastic resin is blended with 100 parts by weight of a polymer compound composed of polyvinyl alcohol, starch, or a derivative thereof. Is preferred.

Further, as a support on which the image receiving layer is provided,
Paper, synthetic paper, non-woven fabric, for example, polyethylene, polypropylene, polyethylene terephthalate, polycarbonate, polyphenylene sulfide, polyetherimide,
Plastic films such as polysulfone, polystyrene, nylon, cellulose diacetate and cellulose triacetate are suitable.

Depending on the type of the support, it is preferable that the surface of the support on which the image receiving layer is to be formed is subjected to an easy adhesion treatment prior to the formation of the image receiving layer.

One example of the easy adhesion treatment is to form an anchor resin layer made of a water-dispersible thermoplastic resin such as a polyacrylic, polyurethane-based or thermoplastic elastomer resin or a thermoplastic resin soluble in an organic solvent such as a polyester-based resin. Forming.

The magnetic recording layer made of a water-based coating agent formed on the opposite side of the image receiving layer with respect to the support, if necessary, comprises:
It is formed via an anchor layer if necessary. This magnetic recording layer is made of, for example, γ · Fe ₂ O ₃ , γ · Fe ₃ O ₄ and F
mixed crystal with e ₃ O ₄ , γ doped with CrO ₂ and cobalt
・ Fe ₂ O ₃ or Fe ₃ O ₄ , barium ferrite,
Further, magnetic powder particles made of an alloy such as Fe-Co or Fe-Co-Ni, and casein, polyvinyl alcohol, epoxy-modified polyvinyl alcohol, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, polyacrylic acid, starch and derivatives thereof, urethane It contains a binder component such as a resin and an epoxy resin, and further appropriately mixes additives such as a lubricant such as a metal salt of a higher fatty acid and a wax, an antistatic agent, a dispersant, and an antifoaming agent as needed. It is formed using an aqueous magnetic paint.

The magnetic recording layer is formed by forming a coating layer of the above magnetic paint with a gravure coater or a reverse coater, and then, if necessary, orienting the magnetic powder particles in the coating layer and further drying. By the thickness 10-20
It is better to be about μ.

[0031]

EXAMPLES The specific structure of a recording material for thermally transferring the resin-melt ink of the present invention will be described below with reference to manufacturing examples, and the characteristics of the recording material will be described with reference to comparative examples. This will be described in comparison with the characteristics of the material.

Example 1 A coating composition containing the following components (1) to (6) was applied to a basis weight of 1
One side of a support made of a high-quality paper of 57 g / m ² was coated on the one side by hand with a Mayer bar to 10 g (dry).
/ M ² , after drying, the surface of the coated layer is super-calendered to form an image receiving layer, and the recording material (A) for thermally transferring the resin-melted ink, which is an embodiment of the present invention, is used. Obtained.

Component (1) Benzoguanamine formaldehyde condensate [Spherical particles having an average particle diameter of 4 μm (Nippon Shokubai Co., Ltd .: Eposter M30)] 50 parts by weight (2) Amorphous silica [Specific surface area 260 m ² / g, average particle size 2.5 μm (Tokuyama Corporation: Fine Seal X-37B)] 50 parts by weight (3) Polyamine-based 20% by weight of a 27% by weight aqueous emulsion of a cationic resin (Sanyo Chemical Co., Ltd .: Sunfix PAC-7) (4) 10% by weight aqueous solution of carboxy-modified polyvinyl alcohol (Japan Synthetic Chemical Industry Co., Ltd .: Gohsenal T-350) 300 parts by weight (5) 38% by weight aqueous emulsion of styrene-acrylic copolymer (cationic) (Sumitomo Chemical Co., Ltd.) : S- 3911) 80 parts by weight (6) Water 375 parts by weight

Examples 2 to 6, Comparative Examples 1 to 5
[Table 1] and a coating agent obtained by adding water 375 parts by weight with respect to ingredients in the parts by weight according to a predetermined column of Table 2 below, commercially available wood free paper having a basis weight of 157 g / m ² On one side of a support made of
g (dry) / m ² , and after drying, the surface of this coating layer is super-calendered to form an image receiving layer, and each of the resin-melted inks, which is another embodiment of the present invention, is thermally transferred. Was obtained.

The following abbreviations are shown in Tables 1 and 2. Eposter M30: Spherical particles made of benzoguanamine formaldehyde condensate (average particle diameter: 4 μm) (Nippon Shokubai Co., Ltd .: Eposter M30) Eposter MS: Spherical particles made of benzoguanamine formaldehyde condensate (average particle diameter: 2 μm) (Nippon Shokubai Co., Ltd.) : Eposter MS) Eposter L15: Spherical particles of benzoguanamine formaldehyde condensate (average particle diameter: 15 μm) (Nippon Shokubai Co., Ltd .: Eposter L15) Eposter S: Spherical particles of melamine formaldehyde condensate (average particle diameter: 0.3 μm) (Nippon Shokubai Co., Ltd .: Eposter S) X-37B: Amorphous silica having a specific surface area of 260 m ² / g and an average particle diameter of 2.5 μm (Tokuyama Corporation: Fine Seal X-37B) X-60: Specific surface area 290 m ² / g, average particle diameter 6.0 μ m amorphous silica (Tokuyama Co., Ltd .: Fine Seal X-60) Mizukasil: amorphous silica having a specific surface area of 50 m ² / g and an average particle diameter of 2.0 μm (Mizusawa Chemical Co., Ltd .: Mizukasil P-527) Carplex: Amorphous silica having a specific surface area of 420 m ² / g and an average particle diameter of 15.0 μm (Shionogi Corporation: Carplex BS304) PAC-7: Polyamine-based cationic resin (Sanyo Chemical Co., Ltd .: Sunfix) PAC-7) (Water-based emulsion containing 27% by weight of solid component) 555: Polyamine-based cationic resin (Sanyo Chemical Co., Ltd .: Sunfix 555 (powder)) Sumireze: Non-polyamine-based cationic resin ((dye fixation) Agent) Trade name: Sumireze 1001) Gohsenal: carboxy-modified polyvinyl alcohol (Nippon Gosei: Gohsenal) -350) (Aqueous solution of 10% by weight of solid component) S-3911: Styrene-acrylic copolymer (cationic) (Sumitomo Chemical Co., Ltd .: S-3911) (Aqueous emulsion of 38% by weight of solid component) SF401 : Ethylene-vinyl acetate copolymer (nonionic) (Sumitomo Chemical Co., Ltd.: SF (Sumikaflex) 40)
1) (Water-based emulsion of 55% by weight of solid component) E-4622: Acrylic polymer (cationic) (Daido Kasei Co., Ltd .: E-4622) (Water-based emulsion of 46% by weight of solid component)

[0036]

[Table 1] (The numbers in parentheses in the table are parts by weight based on solid content)

[0037]

[Table 2] (The numbers in parentheses in the table are parts by weight based on solid content)

Example 7 A recording material (A) for thermally transferring the resin-melted ink according to the above-mentioned Example 1 was used, and a magnetic material was applied to the surface of the recording material (A) opposite to the image receiving layer by the following method. A recording layer was formed, and a recording material as yet another embodiment of the present invention was obtained.

Formation of Magnetic Recording Layer On the other surface of the recording material (A) of Example 1, an aqueous emulsion of an ionomer resin [Mitsui Petrochemical Co., Ltd .: Chemipearl S] was applied to the other surface using a gravure coater. 5g (d
After applying and drying at a ratio of ry) / m ^2, the surface of the ionomer resin layer was subjected to a corona discharge treatment.

Subsequently, 210 parts by weight of an aqueous slurry in which the following composition was dispersed with a paint shaker and 20 parts by weight of an aqueous emulsion of an acrylic resin [Nippon Gosei Co., Ltd .: L-8910A] were applied to the surface of the ionomer resin layer. The aqueous magnetic paint obtained by mixing was applied using a Meyer bar at a rate of 30 g (dry) / m ² , and then the magnetic powder particles in the coating layer were coated with a 3500 gauss permanent magnet. After orientation, this was dried to form a magnetic recording layer.

Composition Magnetic powder particles 70 parts by weight [BaO-6Fe ₂ O ₃ (coercive force 2750 Oe)] Sodium polycarboxylate 2 parts by weight [Aron A-6330] 12% by weight aqueous casein solution 78 parts by weight Water 60 Parts by weight

Comparative Example 7 When a coating composition containing the following components (1) to (6) was prepared, a polyamine-based cationic resin (Sanyo Chemical Co., Ltd.) blended as a dye fixing agent was prepared. Coating suitable for coating due to agglomeration generated between Sunfix PAC-7) and a thermoplastic resin due to an aqueous emulsion of an anionic styrene-butadiene block copolymer blended as a binder resin. Did not become a drug.

Composition (1) Benzoguanamine formaldehyde condensate [Spherical particles having an average particle diameter of 2 μm (Nippon Shokubai Co., Ltd .: Eposter MS30)] 30 parts by weight (2 ) Amorphous silica [Specific surface area: 290 m ² / g, average particle size: 6.0 μm (Tokuyama Corporation: Fine Seal X-60)] 60 parts by weight (3) Polyamine-based 20% by weight of a 27% by weight aqueous emulsion of a cationic resin (Sanyo Chemical Co., Ltd .: Sunfix PAC-7) (4) 10% by weight aqueous solution of carboxy-modified polyvinyl alcohol (Japan Synthetic Chemical Industry Co., Ltd .: Gohsenal T-350) 300 parts by weight (5) 38% by weight aqueous emulsion of styrene-butadiene copolymer (anionic) ... 80 parts by weight (6) Water 375 parts by weight

Experiment The characteristics of each recording material according to Examples 1 to 7 and Comparative Examples 1 to 6 were tested by the following operations. The results are shown in [Table 3].

(1) Evaluation of printing by thermal transfer of resin-melted transfer ink Printing on the image receiving layer surface of each recording material by a ticket issuing device equipped with a mechanism for printing by transferring the ink of the resin-melted ink ribbon And the obtained print is clear ...
、, readable, but the sharpness is impaired due to missing dot characters .... △, and illegible due to missing dot characters ... ×.

(2) Evaluation of Marking Based on Quick Drying of Stamping with Stamping Ink The stamping with a stamping ink (a quick-drying stamper (trade name) manufactured by Shachihata Co., Ltd.) is applied to the image receiving layer surface of each recording material. , And immediately after that, when the stamped portion is rubbed with a fingertip, printing remains without flowing.
、, print flow is generated but is readable ... · Δ, print flow is generated and is illegible ·· ×.

(3) Falsification resistance of print obtained by thermally transferring resin-melt transfer ink The image receiving layer surface of each recording material is printed by a ticket issuing device having a mechanism for printing by transferring ink of a resin-melt ink ribbon. After printing, the printed portion is 100%
When rubbed with a cotton swab impregnated with ethanol, the remaining prints are indicated by .largecircle., And the prints disappear by .times..times .. In addition, when the above-mentioned printed portion was rubbed with a cotton swab impregnated with water, the printed portion remained ...
Indicated by the print that has disappeared.

(4) Tampering resistance of stamping with stamp ink After stamping with stamping ink (quick drying stamper (trade name) manufactured by Shachihata Co., Ltd.) on the image receiving layer surface of each recording material, After sufficient drying, the printed portion is rubbed with a cotton swab impregnated with 100% ethanol after printing on the image receiving layer surface of each recording material.
、, print is lost.

[0049]

[Table 3]

[0050]

According to the present invention, a recording material for thermally transferring the resin-melt ink of the present invention comprises a support and an image receiving layer formed on one surface of the support. But,
Organic pigment consisting of spherical particles having an average particle diameter of 1 to 5 μm,
A polymer comprising amorphous silica having a specific surface area of 200 to 400 m ² / g, a polyamine-based cationic resin as a dye fixing agent, and a binder, and the binder comprising polyvinyl alcohol, starch, or a derivative thereof. It comprises a coating layer of an aqueous coating agent using a mixture of a compound and a thermoplastic resin of an aqueous emulsion of a nonionic or cationic thermoplastic resin.

The image-receiving layer of the recording material has good image-receiving suitability for both a resin-melt transfer ink and a stamp ink by thermal transfer, and the image-receiving layer is alcohol- and water-resistant. It has excellent properties.

Further, a chemical reaction between a polyamine-based cationic resin compounded as a dye fixing agent in the image-receiving layer of the recording material and a coloring agent in a resin-melt transfer ink or stamping ink is required. It is presumed that a bond is formed, but this gives alcohol resistance to printing formed by thermally transferring resin-melted ink from a transfer material or stamping with a stamp ink. Tamperability is obtained.

Therefore, both the printing of the resin-melted ink formed by thermal transfer and the marking formed by the stamping ink on the image receiving layer of the recording material for thermally transferring the resin-melted ink of the present invention are clear. In addition, these prints and seals have excellent tampering resistance.
For this reason, the recording material for thermally transferring the resin-melted ink of the present invention is extremely suitable for use as a ticket paper for various transportations.

The recording material for thermally transferring the resin-melt ink of the present invention has an organic solvent since the image receiving layer of the recording material is formed as a coating layer using a water-based coating agent. There is also an advantage in that the use of a system-based coating agent does not cause any adverse effects such as the occurrence of environmental pollution during its production, and the production cost can be suppressed.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-86589 (JP, A) JP-A-4-197786 (JP, A) JP-A-6-79974 (JP, A) JP-A-6-79974 286350 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) B41M 5/40

Claims (4)

(57) [Claims] 1. An image forming apparatus comprising: a support; and an image receiving layer formed on one surface of the support, wherein the image receiving layer is an organic pigment composed of spherical particles having an average particle diameter of 1 to 5 μm. A polymer compound containing amorphous silica having a surface area of 200 to 400 m ² / g, a polyamine-based cationic resin as a dye fixing agent, and a binder, and the binder comprising polyvinyl alcohol, starch, or a derivative thereof. And for thermally transferring a resin melt-type ink, comprising a coating layer of an aqueous coating agent using a mixture of a thermoplastic resin with an aqueous emulsion of a nonionic or cationic thermoplastic resin. Recording material. 2. The recording material according to claim 1, wherein the organic pigment comprising spherical particles having an average particle diameter of 1 to 5 μm comprises a benzoguanamine formaldehyde condensate. 3. The amorphous silica has an average particle diameter of 1 to 8 μm.
A recording material for thermally transferring the resin-melted ink according to claim 1 or 2, wherein: 4. The support according to claim 1, further comprising a magnetic recording layer made of an aqueous coating material on the other surface of the support.
A recording material for thermally transferring the resin-melt ink according to claim 3.