JP2598387B2 - Thermal transfer sheet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a heat-sensitive transfer sheet, and more specifically, enables a smooth heat-sensitive transfer by preventing static electricity from being generated on a transfer sheet during transfer or the like. About the sheet to be.

[Prior art and its problems]

When printing an output print of a computer or word processor by a thermal transfer method, a thermal transfer sheet having a heat-fusible ink layer on one surface of a base film;
Use a thermal head. Conventional thermal transfer sheets
A hot-melt ink layer in which a pigment is mixed with wax using a paper such as a capacitor paper or paraffin paper with a thickness of 10 to 20 μ as a base film, or a plastic film such as polyester or cellophane with a thickness of 3 to 20 μ. Is provided on the base film by coating. The thermal transfer sheet is often used in the form of a film or a rolled-up form.

However, when the conventional thermal transfer sheet is used for output printing on the receiving paper, or when the conventional sheet is processed and handled, the thermal transfer sheet comes into contact with itself or other materials, generating static electricity. In this case, dust adhered to the transfer sheet, and sparks were generated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat-sensitive transfer sheet that solves the above-mentioned problems and prevents the transfer sheet from being charged, thereby enabling smooth heat-sensitive transfer.

[Means for solving the problem]

The heat-sensitive transfer sheet of the present invention is a heat-sensitive transfer sheet including a base film and a hot-melt ink layer provided on the side where the transfer paper contacts, wherein an antistatic agent is added to at least one constituent layer of the sheet. It is characterized by containing.

Embodiments of the present invention containing an antistatic agent are described below.

(I) An embodiment of the heat-sensitive transfer sheet of the present invention in which a sticking prevention layer is provided on the sheet surface on the side contacting the thermal head, and the sticking prevention layer contains an antistatic agent. (Ii) Base film on the side contacting the thermal head. Embodiment of the heat-sensitive transfer sheet of the present invention in which a coating film of an antistatic agent is provided on the surface (iii) Embodiment of the heat-sensitive transfer sheet of the present invention in which the base film contains an antistatic agent (iv) Heat-meltable ink Aspect of the heat-sensitive transfer sheet of the present invention, wherein the layer contains an antistatic agent. (V) A sealing layer that seals a printed portion of the transferred paper at the time of transfer is provided on the sheet surface on the side where the transferred paper contacts, Embodiment of the heat-sensitive transfer sheet of the present invention, in which the sealing layer contains an antistatic agent. (Vi) An anti-sticking layer is provided on the sheet surface on the side in contact with the thermal head, and the antistatic agent is Ticking preventing layer and is contained in the heat-fusible ink layer,
Aspects of the heat-sensitive transfer sheet of the present invention (vii) A sealing layer that seals a printed portion of the transferred paper at the time of transfer is provided on the sheet surface on the side where the transferred paper contacts,
On the other hand, an embodiment of the heat-sensitive transfer sheet of the present invention in which an anti-sticking layer is provided on the sheet surface on the side in contact with the thermal head, and an antistatic agent is contained in the filling layer and the anti-sticking layer (viii) A filling layer for filling the printing portion of the paper is provided on the sheet surface on the side where the transfer paper contacts,
On the other hand, an embodiment of the heat-sensitive transfer sheet of the present invention in which a sticking prevention layer is provided on the sheet surface on the side in contact with the thermal head, and the antistatic agent is contained in the sealing layer, the sticking prevention layer and the heat-meltable ink layer. ix) An embodiment of the heat-sensitive transfer sheet of the present invention in which a coating of an antistatic agent is provided on the surface of the base film on the side to which the thermal head is in contact, and the heat-fusible ink layer contains the antistatic agent. A coating layer of an antistatic agent is provided on the surface of the base film on the side, and a sealing layer that seals the printed portion of the transferred paper at the time of transfer is provided on the surface of the sheet on which the transferred paper is in contact, and the antistatic agent is provided. Embodiments of the Thermal Transfer Sheet of the Present Invention Containing (xi) An antistatic film is provided on the surface of the base film on the side to which the thermal head is in contact, so that the printed portion of the transfer-receiving paper can be seen during transfer. An embodiment of the heat-sensitive transfer sheet of the present invention, wherein the sealing layer to be stopped is provided on the sheet surface on the side in contact with the transfer paper, and the sealing layer and the heat-fusible ink layer contain an antistatic agent. (Xii) Base film Embodiment of the heat-sensitive transfer sheet of the present invention, wherein the heat-fusible ink layer contains an antistatic agent. (Xiii) A sheet on the side where the transfer sheet comes in contact with the transfer layer that seals the printed portion of the transfer sheet during transfer. Provided on the surface,
Embodiment of the thermal transfer sheet of the present invention in which the filling layer and the base film contain an antistatic agent. (Xiv) A sheet on the side where the transfer sheet comes into contact with the filling layer for filling the printed portion of the transferred paper during transfer. Provided on the surface,
Embodiment of the heat-sensitive transfer sheet of the present invention in which the base film, the heat-meltable ink layer and the sealing layer contain an antistatic agent. (Xv) The sealing layer for sealing the printed portion of the transfer-receiving paper at the time of transfer. Embodiment of the heat-sensitive transfer sheet of the present invention provided on the sheet surface on the side in contact with the paper, wherein the heat-meltable ink layer and the filling layer contain an antistatic agent (XVI). Sealing layer is provided on the sheet surface on the side where the transfer paper contacts,
On the other hand, an embodiment of the heat-sensitive transfer sheet of the present invention in which a sticking prevention layer is provided on the sheet surface on the side in contact with the thermal head, and an antistatic agent is contained in the sticking prevention layer. Materials and the like will be described in detail.

Base Film As the base film used in the present invention, a conventional base film can be used as it is, and other films can also be used, and there is no particular limitation. As the type of the film, for example, polyester, polypropylene, cellophane, polycarbonate, cellulose acetate, polyethylene, polyvinyl chloride, polystyrene, nylon, polyimide, polyvinylidene chloride,
Examples include plastics such as polyvinyl alcohol, fluororesin, hydrochloric acid rubber, and ionomer; papers such as condenser paper and paraffin paper; and nonwoven fabrics, and a composite film of these.

The thickness of the base film can be appropriately changed depending on the material so that its strength and thermal conductivity are appropriate, and the thickness is, for example, 1 to 25 μ, and preferably 3 to 25 μ. .

Hot-melt ink layer The hot-melt ink layer is composed of a colorant and a vehicle,
Further, various additives may be added as necessary.

As this colorant, among organic or inorganic pigments or dyes, those having good properties as a recording material,
For example, those having sufficient coloring ability and not discoloring by light, heat, humidity and the like are preferable.

In addition, a substance which is colorless when not heated but develops a color when heated, or a substance which develops a color when it comes into contact with a substance applied to a transfer object may be used. Cyan, magenta,
In addition to the colorants that form yellow and black, colorants of other various colors can also be used. That is, in the hot-melt ink, carbon black or various dyes and pigments are selectively added as a colorant according to the color to be given to the ink.

As the vehicle, wax, drying oil, resin, mineral oil, derivatives of cellulose and rubber, and the like, and a mixture thereof are used.

Here, as typical examples of the wax, microcrystalline wax, carnauba wax, and paraffin wax are preferably used. In addition, Fischer-Tropsch wax, various low molecular weight polyethylenes and some modified waxes, fatty acid esters, amides, wood Various waxes such as wax, beeswax, whale wax, botaro wax, wool wax, shellac wax, candelilla wax, petrolatum and the like can be used.

Here, as the resin, for example, EVA (ethylene-vinyl acetate copolymer), EEA (ethylene-ethyl acrylate copolymer), polyethylene, polystyrene, polypropylene, polybutene, petroleum resin, vinyl chloride resin, polyvinyl alcohol, chloride Vinylidene resin, methacrylic resin,
Polyamide, polycarbonate, fluororesin, polyvinyl formal, polyvinyl butyral, acetyl cellulose, nitrocellulose, vinyl acetate resin, polyisobutylene or polyacetal can be used.

Here, a heat conductive substance can be blended with the ink in order to provide the ink layer with good heat conductivity and melt transferability. Examples of this substance include carbonaceous substances such as carbon black, and metal powders such as aluminum, copper, tin oxide, and molybdenum disulfide.

The coating of the hot-melt ink layer directly or indirectly on the base film is a normal printing or coating method other than hot melt coating, specifically, hot lacquer coating, gravure coating, gravure reverse coating, roll coating, gravure printing, Bar coating and many other means can be used. The thickness should be determined so as to balance the required print density with the thermal sensitivity, and is in the range of 0.1 to 30μ, preferably in the range of 1 to 20μ.

Sealing Layer In the present invention, the sealing layer has a function of sealing the printing portion of the transfer-receiving paper at the time of transfer, and also has a function of preventing background stain on the printing portion.

That is, at the time of printing, in a normal thermal transfer sheet, the background of the transfer paper is easily caused by rubbing with the transfer paper, but the thermal transfer sheet of the present invention having the sealing layer can be rubbed. Since the ink layer can be prevented from coming into direct contact with the transfer paper only by attaching the surface-mounting portion of the filler layer to the transfer paper, there is an advantage that no stain is generated. Further, when the coating film hardness of the filling layer is high (for example, carnauba wax, candelilla wax, etc.), the degree of adhesion to the transfer receiving paper is smaller, and the stain resistance is further increased.

In the present invention, the term "filler" refers to (a) the case where the filler is filled in the concave portions on the surface of the transfer-receiving paper to perform the filler, and (b) the filler retains the coated state. It moves onto the transfer paper as it is, contacts the surface convex, adheres and closes the concave part as if it were a bridge,
As a result, the case where the surface of the printing portion becomes smooth is also included.

In the present invention, the filler layer is made of wax and / or resin, and may contain an extender as needed.

The melting point of the filling layer can be selected according to the temperature of the thermal head to be used, but is usually preferably in the range of 40 to 150 ° C.

As typical examples of the wax, microcrystalline wax, carnauba wax, and paraffin wax are preferably used. In addition, Fischer-Tropsch wax, various low-molecular-weight polyethylenes and some modified waxes, fatty acid esters and amides, wood wax, beeswax, Whale wax, Ibota wax, wool wax, shellac wax, candelilla wax, petrolatum, vinyl ether wax such as octadecyl vinyl ether, etc.
Various waxes can be used.

The wax used in the filling layer is the same or different from the wax used in the above-mentioned hot-melt ink layer. In a preferred embodiment of the present invention, both kinds of wax can be made of different types as follows. That is, a filler layer is provided on the hot-melt ink layer, both use a vehicle such as a relatively low-melting wax, and the hot-melt ink layer has a relatively low melting point, for example, 40 to 80 ° C.
As a result, the thermal sensitivity of the ink is increased and high-speed thermal transfer is possible.On the other hand, the sealing layer in contact with the transfer receiving paper has a relatively high melting point, for example, 50 to 100 ° C., so that a high energy level can be obtained. In the thermal transfer, the occurrence of print blurring is reduced. Therefore, an appropriate combination can be determined so that the above-mentioned conditions of the melting point range and the difference between the melting points, for example, 10 to 60 ° C. are satisfied.

Examples of the resin used for the sealing layer include polyethylene, chlorinated polyethylene, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ionomer, polypropylene, polystyrene, and styrene. -Acrylonitrile copolymer (AS resin), ABS resin, polyvinyl chloride, polyvinylidene chloride, vinyl chloride-acrylonitrile copolymer, vinylidene chloride-acrylonitrile copolymer, vinyl chloride-vinyl acetate copolymer, vinyl chloride-propion Vinyl acid copolymer, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, polybutene resin, acrylic resin, fluororesin, isobutylene-maleic anhydride copolymer, polyamide resin, nitrile rubber, acrylic rubber, polyisobutylene resin, polyisobutylene resin Carbonate resin, polyacetal resin, polyalkylene oxide, saturated polyester resin, silicon resin, phenol resin, urea resin, melamine resin, furan resin, alkyd resin, unsaturated polyester resin, diacryl phthalate resin, epoxy resin, polyurethane resin, modified rosin , Rosin, hydrogenated rosin, rosin ester resin, maleic acid resin, ketone resin, xylene resin, vinyl toluene butadiene resin, polycaprolactone resin, ethyl cellulose resin,
Polyvinyl butyral resin, methacrylic resin, polyvinyl formal resin, acetyl cellulose resin, maleic acid resin, vinyl toluene acrylate resin, terpene resin, aliphatic, aromatic, copolymer or alicyclic petroleum resin, methyl cellulose, hydroxy Cellulose derivatives such as ethylcellulose and nitrocellulose, and copolymers and blended polymers thereof.

It is recommended to add an appropriate amount of extender to the filling layer. Thereby, blurring or tailing of the print can be prevented.

Particles with too large a particle size are inappropriate for the extender pigment. Suitable as extenders are inorganic fillers such as silica, talc, calcium carbonate, precipitated barium sulfate, alumina, titanium white, clay, magnesium carbonate or tin oxide.

The blending amount of the extender is small, but the effect is poor.
If it exceeds 60%, the dispersibility is lowered and it becomes difficult to adjust the ink, or the coated material tends to fall off from the base film. Therefore, it is preferable to add 0.1 to 60% by weight.

As described above, the filler layer is configured with or without the addition of a coloring agent (eg, a dye or a pigment) as necessary.
If a colorant is used, it will overlap with the colorant in the ink layer to provide a record of sufficient density, and if only a colorless vehicle is used,
It is possible to prevent the transfer paper and the ink layer from directly contacting and rubbing each other, thereby causing a background stain.

In addition, when a colorant having concealing properties, such as titanium white, is used, there is an effect of concealing the base, which is advantageous in that the color of the transfer ink is clearly clarified.

The coating of the fill layer can also be made by various techniques. It is appropriate that the thickness of this layer is about 0.1 to 30 μm.

Sticking prevention layer When using a heat-sensitive material for the base film, or in low-temperature atmosphere printing or high-speed printing, etc.
Since the energy and temperature transmitted from the thermal head increase, it is preferable to provide a layer for preventing sticking of the thermal head on the surface in contact with the thermal head.

The composition is then used to prepare an anti-sticking layer.

(A) Composition containing the following (i) to (iv) (i) Thermoplastic resin having OH group or COOH group (for example, acrylic polyol, urethane resin containing OH group, vinyl chloride-vinyl acetate copolymer, etc.) ), (Ii) at least 2
A compound having an amino group, dissocyanate or triisocyanate, (iii) a thermoplastic resin, (iv) a heat releasing agent, or a lubricant.

(B) Composition containing the following (i) to (ii) (i) Resin (for example, silicon-modified acrylic resin, silicon-modified polyester, acrylic resin, polyester resin, vinylidene fluoride resin, vinylidene fluoride-tetrafluoroethylene) (Ii) Thermal release agent or lubricant By providing such an anti-sticking layer, a heat-sensitive plastic film can be used as a base material. Even with the heat-sensitive transfer sheet, thermal printing can be performed without sticking, and the advantages of the plastic film, such as difficulty in cutting and ease of processing, can be utilized.

Matte layer / matte processing In general, thermal transfer is glossy and beautiful on the print, but may make the document difficult to read, so matte printing may be desirable. In such a case, the base film is coated with a resin in which an inorganic pigment such as silica or calcium carbonate is dissolved in an appropriate solvent, coated with a mat layer, and then coated with a hot-melt ink. To form a thermal transfer sheet. Alternatively, the base film itself may be used after matting.

Needless to say, the present invention can be applied to a thermal transfer sheet for color printing, and a multicolor thermal transfer sheet is also included in the scope of the present invention.

Antistatic agent In order to eliminate the adverse effects of static electricity, an antistatic agent is contained in the constituent layers of the thermal transfer sheet. The antistatic agent can be added to any of the base film, the ink layer, the filler layer and the anti-sticking layer. In particular, it is preferable to include an antistatic agent in the anti-sticking layer and / or the filler layer.

As the antistatic agent used in the present invention, any conventionally known antistatic agents can be used. For example, various cations having a cationic group such as a quaternary ammonium salt, a pyridinium salt, and a tertiary amino group are preferable. Anionic antistatic agents having an anionic group such as a sulfonic acid group, a sulfate ester group, a phosphate ester group, and a phosphonate, an amphoteric antistatic agent such as an amino acid type and an amino sulfate type ester, and an amino alcohol -Based, glycerin-based, polyethylene glycol-based nonionic antistatic agent such as non-static antistatic agent, furthermore, a high molecular weight antistatic agent and the like having a high molecular weight antistatic agent as described above, Further, monomers or oligomers having a tertiary amino group or a quaternary ammonium group and capable of being polymerized by radiation, for example, N, N-dialkylamido Alkyl (meth) acrylate monomers, polymerizable antistatic agents such as those quaternary compound can be used.

In particular, when such a polymer antistatic agent is used, since the antistatic agent is integrated with the formed resin layer, stable antistatic properties can be achieved for a long time.

Hereinafter, the present invention will be described in detail with reference to examples.

Example 1 Means in which a 6 μm thick polyethylene terephthalate film was used as a base film, and a hot-melt ink having the following composition was added to the surface in contact with the receiving paper, and a sticking prevention layer having the following composition was added to the surface in contact with the thermal head. Was applied.

Anti-sticking layer: Vinylidene fluoride tetrafluoroethylene copolymer “Kynar K7201” (Pentwald) 5 parts Polyester polyol “SP-1510” (Hitachi Chemical) 4 parts Cellulose acetate butyrate “Celit BP700-25” (Bayer) 1 Part Polyethylene wax "FC113" (Adeka Argus) 1 Part Fluorocarbon "F-57" (Axel) 0.5 part Phosphate ester antistatic agent "ELENON 19M" (Daiichi Kogyo Pharmaceutical) 0.6 Part Methyl ethyl ketone (MEK) 60 Parts Toluene 30 0.5 g / m ² coating thermal fusible ink layer by parts gravure coating method: carbon black "Seast SO" (Tokai electrode) 15 parts of ethylene / vinyl acetate copolymer "EVAFLEX 310" (Mitsui Polychemicals) 7 parts paraffin wax "Paraffin 150 ° F" 40 parts Carnauba wax 15 parts Viscosity at 100 ° C 4 5c.ps Using an attritor, knead at 120 ° C for 6 hours and apply 4g / m ² (dry state) by 120 ° C hot melt roll coating method. Measure the antistatic performance of the resulting thermal transfer sheet with a static honest meter. (Manufactured by Shishido Shokai) and evaluated by half-life and saturation potential.

As a comparative example, a case is shown in which the same ink as in Example 1 was used except that an ink having the same composition as in Example 1 except that the antistatic agent (Elenon 19M) was removed from the anti-sticking layer. The measurement results are as follows.

Measurement conditions: measured at 25 ° C. and 60%, applied potential of −10 KV, applied time of 30 seconds As described above, a transfer sheet having a low saturation potential, a short half-life, and a high antistatic property was obtained.

Example 2 The same hot-melt ink layer as in Example 1 was formed using the same base film as in Example 1. Further, an antistatic layer having the following composition was formed on the surface of the base film opposite to the hot-melt ink layer.

Antistatic agent layer: Statiside concentrate (TDK) 1 part IPA 200 parts Coating was performed by a gravure coating method using a 150, 40μ (plate depth) cylinder.

The obtained heat-sensitive sheet was measured for antistatic performance in the same manner as in Example 1, and excellent antistatic properties were recognized as described below.

Example 3 A transfer sheet was prepared by forming the same ink layer as in Example 1 using PET containing an antistatic agent as a base film.

As a result of performing the same evaluation as in Example 1, a high antistatic property was recognized.

Example 4 Using the same base film as in Example 1, a transfer sheet was prepared by forming a sticking prevention layer having the following composition and an ink layer containing a quaternary ammonium salt-based (cationic) antistatic agent.

Sticking prevention layer: Vinylidene fluoride / tetrafluoroethylene copolymer (Benwald, Kynar 7201) 8 parts Polyester polyol (Takeda Pharmaceutical, Takelac XU-534TV 40% MEK solution) 40 parts Fluorocarbon (Axel, F- 57) 5 parts Benzoguanamine resin powder (Nippon Shokubai Kagaku, Eposter S) 3 parts Lecithin (manufactured by Ajinomoto) 1 part MEK 35 parts Toluene 45 parts Based on the above composition, isocyanate (manufactured by Nippon Polyurethane, Coronate L, 75% ethyl acetate solution) ) Is mixed at a ratio of composition: isocyanate = 45: 3 (weight ratio), applied by gravure printing to 0.5 g / m ² (dry state), and dried at a temperature of 100 ° C. to prevent sticking. Layers.

Hot-melt ink layer: A product obtained by reacting hexamethylene diisocyanate and ethyl alcohol in equivalent amounts (80 ° C., 10 hours) 30 parts Vinyl acetate “Esnil C-50” (Sekisui Chemical) 6 parts Carbon black “SEIST” SO "(Toyo Electrode) 6 parts Statiside concentrate (TDK) 3 parts Ethyl alcohol 50 parts IPA 70 parts Gravure coating method 3.0 g / m ² (dry state) Coating The same evaluation as in Example 1 shows a high charge. Prevention was observed.

Example 5 A transfer sheet was prepared by using the same base film (3.5 μm thick) as in Example 1 and forming a sticking prevention layer and a hot-melt ink layer having the following compositions.

1) Sticking prevention layer A sticking prevention layer having the following composition was formed on the surface of the base film on the side in contact with the thermal head.

Anti-sticking layer: Silicon-modified acrylic resin “KP5208 40% xylene solution” (Shin-Etsu Chemical) 10 parts Fluorocarbon “F-57” (Axel) 3 parts Antistatic agent “Arcade T50” (Lion Aguzo) 1.2 parts Toluene 40 parts xylene 40 parts Butanol 40 parts Coating at 0.1 g / m ² (dry state) by gravure coating method A heat-meltable ink layer and filling layer with the following structure are formed on the base opposite to the sticking prevention layer to prepare a transfer sheet did.

2) Heat-meltable ink layer Melting point 60 ° C, thickness 4μ Carnauba wax 20 parts Paraffin wax (145 ° F) (Japanese wax) 60 parts Carbon black “Seast SO” (Tokai electrode) 15 parts Ethylene-vinyl acetate Coated “Evaflex 310” (Mitsui Polychemicals) 8 parts Kneaded at 120 ° C for 6 hours using an attritor, and applied by a 120 ° C hot melt roll coating method.

3) Filler layer Melting point 82 ° C, thickness 0.5μ Carnauba emulsion “WE-90” (bond wax, 40% solids aqueous emulsion) 10 parts 70% isopropanol aqueous solution 10 parts Coated by gravure coating method.

When evaluation was performed in the same manner as in Example 1, a high antistatic effect was recognized.

Example 6 Using the same base film (4.5 μm thick) as in Example 1, a transfer sheet was prepared by forming a sticking prevention layer, an ink layer, and a filling layer (containing a quaternary ammonium salt-based antistatic agent) having the following compositions. .

Sticking prevention layer: Same as in Example 1. Hot-melt ink layer: Carbon black "SEAST SO" (Tokai electrode) 15 parts Ethylene / vinyl acetate copolymer "Evaflex 310" (Mitsui Chemicals) 7 parts Paraffin wax "Paraffin 150"゜ F ”40 parts Carnauba wax 15 parts 3.5 g / m ² (dry state) applied by 120 ° C hot melt roll coating method Sealing layer: Carnauba emulsion“ WE-90 ”(bond wax) (40% solids) 10 parts 70% IPA water 30 parts Antistatic agent "Arcard T-50" (Lion Aguzo) 0.2 parts 0.5 g / m ² (dry state) applied by gravure coating method The result of the same evaluation as in Example 1 was performed on the obtained transfer sheet. , High antistatic properties were observed.

[Effect of the Invention] Since the heat-sensitive transfer sheet of the present invention contains an antistatic agent, it does not become charged even if contact between the heat-sensitive transfer sheets and contact between the heat-sensitive transfer sheet and other parts or materials occur. ,
Therefore, dust and dirt do not adhere to the transfer sheet,
In addition, a transfer sheet is attached to the device to prevent clinging to the hand when removing it, and also to prevent malfunctions due to static electricity damage to IC devices in the device or adverse effects on the thermal head, etc. Of high quality.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-129789 (JP, A) JP-A-60-94392 (JP, A) JP-A-59-114098 (JP, A) JP-A-60-94 115488 (JP, A) JP-A-60-193680 (JP, A)

Claims (6)

(57) [Claims] 1. A base film, a heat-fusible ink layer provided on a side of the base film on which the transfer paper contacts, and a printing portion of the transfer paper provided on the heat-fusible ink layer during transfer. A heat-sensitive transfer sheet comprising a filling layer to be filled, wherein the hot-melt ink layer and / or the filling layer contains an antistatic agent, and the melting point of the hot-melt ink layer is 40 to 80. C., the melting point of the filling layer is 50 to 100 ° C., and the filling layer has a melting point difference of 10 to 60 ° C. higher than the hot-melt ink layer. 2. The heat-sensitive transfer sheet according to claim 1, wherein an anti-sticking layer is provided on the surface of the sheet on the side in contact with the thermal head, and the anti-sticking layer contains an antistatic agent. 3. The heat-sensitive transfer sheet according to claim 1, wherein a coating of an antistatic agent is provided on the surface of the base film on the side in contact with the thermal head. 4. The base film contains an antistatic agent,
The heat-sensitive transfer sheet according to claim 1. 5. The sense according to claim 1, wherein an anti-sticking layer is provided on the sheet surface on the side in contact with the thermal head, and the anti-static agent is contained in the anti-sticking layer and the hot-melt ink layer. Thermal transfer sheet. 6. The method according to claim 1, wherein the base film, the hot-melt ink layer and the filling layer contain an antistatic agent.
Item.