JPH03266689A - Re-transfer sheet - Google Patents

Abstract

PURPOSE:To enhance transfer work efficiency and to bond aroma to a re-transfer image by specifying the tensile force of the surface treatment agent formed to one surface of a re-transfer sheet and adding an aromatic-containing microcapsule destructed under pressure to a composition. CONSTITUTION:A re-transfer sheet 10 is obtained by forming a surface treatment agent layer to one surface of a base material 11 and the tensile force of the surface treatment agent layer 12 is desirably 1 - 100 kg/cm<2> because the flocculation force of a surface treatment agent becomes too large when the tensile force is 100 kg/cm<2> or more at the time of the re-transfer of a transfer image to an object 15 to be transferred and the surface treatment agent layer becomes a strong film and the transfer image is not transferred only by applying pressure to the re-transfer sheet. Further, since the strength of the film is too weak when the tensile force is 1 kg or less, the surface treatment layer is released only by bending the sheet. An aromatic-containing microcapsule 14 destructed under pressure is added to the treatment agent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention applies pressure-sensitive transfer of an image of a character, symbol, figure, etc. onto the surface of an object to be transferred.

It relates to retransfer sheets for dry transfer materials that form figures, etc., and in particular to retransfer sheets for dry transfer materials produced by printing and thermal transfer using printing devices such as thermal transfer printers, typewriters, word processors, etc. It is.

[Prior Art and Problems to be Solved by the Invention] Conventionally, as a technology related to a basic sheet capable of producing a dry transfer material by a thermal transfer method, there is a technology disclosed in Japanese Patent Application Laid-Open No. 63-1289.
There is one shown in Publication No. 87.

That is, as a base sheet, a film made of polyethylene, polypropylene, fluororesin, etc. having a smooth surface with a contact angle of at least 95° to water, or a paper, metal foil, or a plastic film made of silicone resin on the surface of the base material. A sheet with a covering layer formed thereon is used.

In order to form an image on a sheet having a contact angle of 95° or more (particularly 105° or more) by thermal transfer,
In addition to reducing the surface tension of the ink and making the ink wet on the sheet, the adhesive strength between the sheet and the ink is increased.
Since the cohesive force between the inks and the adhesive force between the ink and the polyethylene terephthalate (PET) substrate must be greater, the temperature of the ink must be increased. Therefore, in order to achieve this, high printing energy is required, which is extremely disadvantageous for thermal transfer devices, such as in terms of durability of the print head and load on the power supply.

In addition, images formed on surfaces with poor wettability by thermal transfer are
Because the adhesion to that surface is weak, even a small amount of pressure will result in retransfer.

Therefore, unnecessary images are also transferred again, causing stains. Moreover, there is also the problem that the image may come off even if touched slightly during handling.

Furthermore, since the coefficient of static friction on the surface of the sheet is extremely small, there is a problem in that the sheet moves easily and is difficult to fix when a thermally transferred ink image is retransferred. Therefore, the retransferred image may be misaligned or distorted, making it impossible to obtain a complete image.

By the way, in order to prevent the problem of sheet movement during pressure-sensitive retransfer as described above, Japanese Patent Application Laid-Open No. 63-246298 discloses a technique in which an adhesive layer is provided on the sheet separately from the transfer pattern. has been done.

However, partially providing this adhesive layer at a predetermined position requires ingenuity in manufacturing and requires the use of a dedicated device, resulting in a large cost. Furthermore, in order to cover the adhesive surface until use, a release paper or the like must be attached, which further requires device innovation and cost.

Furthermore, for sheets with a releasable coating layer made of silicone resin, it is necessary to apply two types of coating, the coating layer and the adhesive layer, and whichever is applied first, it is necessary to apply the coating afterwards. There is a good chance that it will have an impact when That is,
If you apply the silicone first, it will cause splatter when applying the adhesive.On the other hand, if you apply the adhesive first, it will become sticky and difficult to apply, so to prevent this stickiness, release paper is attached. However, coating is difficult due to its thickness. Even if it were successfully manufactured, since the adhesive layer is present only in one part, the entire area around the image is not fixed, so the sheet still moves, making it difficult to form a complete image.

In order to solve such problems, the present applicant has proposed a technology in which the surface treatment agent is changed to a transfer type in Japanese Patent Application No. 63-23445.
3 and Japanese Patent Application No. 63-239944.

The surface treatment agents described in these applications have a tensile strength of 1 kg/cm2 or more and 100 kg/cm2 or less, and a melting point or softening point of 100°C or more, or 100'C
Those having a melt viscosity of 1000 poise or more are used.

However, when performing pressure-sensitive retransfer, especially when there are many images to be transferred, it is necessary to carefully and patiently rub the back side of the transfer sheet, but at this time, unpleasant odors such as ink odor generated from the ink and transfer sheet may occur. , the operator may experience considerable discomfort during the transfer process, which often makes the process quite painful.

The present invention was developed against this background, and its first purpose is to eliminate unpleasant odors such as ink odor during pressure-sensitive retransfer, and to improve the efficiency of transfer workers. It is an object of the present invention to provide a retransfer sheet which can appeal to the sensibilities and can attach a scent to the retransferred image so that the transfer work can be enjoyed and improved.

A second object of the present invention is to provide a retransfer sheet that facilitates fixing of the sheet during retransfer and prevents movement.

Furthermore, a third object of the present invention is to provide a retransfer sheet in which the ink image on the retransfer sheet does not peel off due to slight pressure or abrasion.

Furthermore, a fourth object of the present invention is to provide a retransfer sheet that can obtain good transfer quality with low transfer energy.

Furthermore, a fifth object of the present invention is to provide a retransfer sheet on which a transferred ink image can be completely retransferred without residual ink.

A sixth object of the present invention is to provide a retransfer sheet that allows easy confirmation of whether an ink image has been retransferred.

Furthermore, a seventh object of the present invention is to provide a retransfer sheet that can improve the scratch resistance of a retransferred ink image.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a surface treatment agent for a retransfer sheet that contains 1 kg/cm" or more of 100 kg.
g/cm” or less, and furthermore, to the above-mentioned treated material,
It is characterized by containing fragrance microcapsules that are destroyed by pressure.

In addition, the above-mentioned surface treatment agent has a melting point or softening point of 100°C or higher, or has a melt viscosity of 100°C or higher.
The purpose can be advantageously achieved by using a surface treatment agent with a viscosity of 000 poise or higher.

[Specific Structure and Function] The retransfer sheet 10 of the present invention has a surface treatment agent layer 12 formed on one surface of a base material 11, as shown in FIG.

The base material 11 has a thickness of 25 to 200 μm, preferably 5
It is desirable to have a thickness of 0 to 150 μm. This is because if the base material has a thickness of 25 μm or less, it often does not have sufficient mechanical strength for manufacturing and handling.
This is because the base material is stretched by applying pressure during retransfer, and there is a high possibility that distortion will occur in the image. Preferably 20
A film having an elongation of 0% or less is preferred. Also, 200
The reason why a thickness of 200 μm or more is preferable is that if the thickness is 200 μm or more, the flexibility will be poor, making it difficult to apply pressure during pressure-sensitive retransfer, and increasing the possibility that transfer defects will occur.

In addition, the base material is preferably transparent or semi-transparent so that the image can be accurately retransferred onto the transfer object 15 during pressure-sensitive retransfer, and in particular, whether the thermally transferred image has been completely retransferred or It is desirable to use a translucent sheet that is easy to check.

Generally, plastic films, paper, metal foils, etc. are used as base materials having such characteristics.

Examples of plastic films include fluorine-based films made of fluororesins such as ethylene, polypropylene, ethylene-tetrafluoroethylene copolymer and tetrafluoroethylene-hexafluoroethylene copolymer, polyethylene terephthalate, polyamide, polyimide, and polyvinyl chloride. , polycarbonate, polysulfone, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, ionomer, and the like.

Next, it is desirable that the surface treatment agent layer 12 formed on one surface of the base material 11 has a tensile strength of 1 kg/cm 2 or more and 100 kg/cm 2 or less.

This is necessary in order to retransfer the surface treatment agent when retransferring the transferred image formed by thermal transfer from the sheet onto the transfer target 15. That is, 10
If the tensile strength is 0 kg/Cm2 or more, the cohesive force of the surface treatment agent will be too large, resulting in a strong film, resulting in the problem that transfer will not occur just by applying pressure.
If it is less than 1 kg/co+2, the strength of the membrane will be too weak, causing the problem of it peeling off just by bending the sheet.
A tensile strength of /cm2 or less is desirable.

Furthermore, the melting point and softening point of the above surface treatment agent are 100°C.
The viscosity at 100° C. is preferably 1000 poise or more even when melted.

This is because if a surface treatment agent that melts or becomes extremely soft at temperatures below 100°C is used, the surface treatment agent will also melt during image formation by thermal transfer, and the adhesive force between the sheet base material and the surface treatment agent will increase. This is because the transfer rate is improved, which causes retransfer failure.

By using a surface treatment agent with the above tensile strength and melting point, etc., the ink image formed by thermal transfer can be retransferred together with the surface treatment agent, so there is no need to consider the wettability of the surface treatment agent at all. will disappear. Therefore, a good heat-sensitive transfer image can be obtained with low energy, and a retransfer sheet with good abrasion resistance and strong adhesion between the ink image and the surface treatment agent can be obtained. Furthermore, since the coefficient of static friction on the surface can be increased, there is almost no movement of the sheet during retransfer, and a retransferred image can be easily and neatly formed.

Furthermore, until now, when large images were transferred using a thermal transfer device, if the print head was small and a serial type, the images had to be formed several times, and the images had to be transferred in layers. Ta.

Therefore, there is a problem in that the previously transferred image is scraped off by the print head during the next transfer, making it impossible to form a complete image. Therefore, by dividing the image into rows and transferring them separately, the image is prevented from being scraped by the print head, and when retransferring, the divided images are combined one after another to complete the retransferred image. However, if the sheet of the present invention is used, the adhesion force is increased, so that it becomes possible to thermally transfer large images in a connected state.

In addition, the pressure-sensitive retransfer work is painful for the operator, and because pressure is applied to rub the retransfer sheet, a bad odor from the ink or the like may be generated from the ink or the transfer sheet.

However, the fragrance microcapsules dispersed in the surface treatment agent are scratched by the pressure applied to the transfer sheet, and the fragrance or perfume is released to the outside, causing a fragrance to drift around the area. This makes it possible to eliminate the bad odor generated from ink and sheets during retransfer. Furthermore, by consciously combining colors and scents, it is now possible to create paper surfaces with a three-dimensional effect, which allows transcription workers to enjoy transcription and alleviates their pain. With,
This leads to increased efficiency. In addition, when manufacturing ink ribbons, the fragrance is encapsulated in microcapsules, so the scent does not waft outside, and the odor of the ink itself is eliminated.
This eliminates the possibility of fragrance odors mixing with each other and causing discomfort to workers at the manufacturing site.

In addition, the advantage of retransferring the surface treatment agent at the same time is that since the surface treatment agent is retransferred together with the ink image, a complete retransfer image can be formed without any residual ink, and whether the retransfer has been performed or not One example is that it becomes easier to confirm. Furthermore, the surface treatment agent that is retransferred at the same time serves as a protective layer for the ink image, improving the abrasion resistance of the retransferred image and making it possible to attach a fragrance to the retransferred image.

Examples of the above-mentioned surface treatment agents include polyethylene, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, celluloses, ethylene-ethyl acrylate copolymer, and ethylene-acrylic acid copolymer. Examples include resins such as polymers, ionomers, ethylene-methacrylic acid copolymers, polyvinyl alcohol, polyvinylpyrrolidone, and silicones.

Then, one type or a mixture of two or more of these can be used.

Further, there are the following fragrances that can be used as the fragrance.

(1) Hydrocarbons a) Cyclic terpene hydrocarbons α-pinene, β-pinene, camphene, limonene, dipentene, phelandrene, terbirun b) Sesquiterpene cadinene, caryolefin C) Aromatic hydrocarbons p~cymol, diphenylmethane (2 ) Alcohols a) Aliphatic alcohols n-octyl alcohol, n-nonyl alcohol, n-
Decyl alcohol, dimethyl octatool, n-undecylene alcohol b) Olefinic terpene alcohol linalool, tetrahydrolinalool, geraniol,
Nerol, citronellol, rhodinol, hydroxyl
Citronellol C) Cyclic terbene alcohol α-terpineol, β-terpineol, γ-terpineol, isopulegol, menthol, borneol, isoborneol d) Sesquiterpene alcohol farnesol, nerolidol, santalol e) Aromatic alcohol benzyl alcohol, anise alcohol, γ-phenylpropyl alcohol, cinnamic alcohol, methylphenylcarbinol, dimethylphenylcarbinol, dimethylbenzylcarbinol, β-phenylethyl and dimethylcarbinol, β-phenylethyl/methylethylcarbinol, phenoxyethyl alcohol (3) phenol and phenol ether anisole,
p-acetyl anisole, diferether nioquindo, dibenzyl ether, guaiacol, dimethylhydroquinone, p-cresol methyl ether, thymol,
Carvacrol, anethole, eugenol, isoeugenol, methyleugenol, methylisoeugenol, benzylisoeugenol, safrole, isopropyl, β-naphthol methyl ether, β-naphthol ethyl ether, β-naphthol isobutyl ether (4) Aldehydes a) Fat Group aldehydes n-heptylaldehyde, n-octylaldehyde, n
-nonylaldehyde, nonajenal n-decylaldehyde, n-undecylaldehyde, undecylaldehyde, n-duodecylaldehyde, methylnonylacetaldehyde, n-tridecylaldehyde, n-tetradecylaldehyde, n-hexadecylaldehydeb) so-called C14 C16, C18 aldehyde γ-
undecalactone, ethyl methylphenylglycidate,
γ-nonyllactone C) Olefinic terpene citral, citronellal, hydroxy sialdehyde tronellal d) Aromatic aldehyde benzaldehyde, p-tolylaldehyde, cumin aldehyde, phenylacetaldehyde, p-tolylacetaldehyde, phenylpropylacetaldehyde, cinnamic aldehyde α-amylcinnamic aldehyde, p-isopropyl-α-methylhydrocinnamic aldehyde, salicylaldehyde, anisaldehyde, heliothrobin, vanillin, ethylvanillin (5) Ketones a) Aliphatic ketone Methyl-n-amylketone, Methyl-n- Hexyl ketone, methyl-n-nonyl ketone, ethyl-n-amyl ketone, methylhebutenone, diacetyl b) Cyclic terpene ketone carbon, menthone, brevon, bepyritone, camphor C) Aromatic ketone acetophenone, p-methylacetophenone, benzophenone, benzylidene acetone , methylnaphthylketone, ionone, methylionone, ilone, jasmone, muscone, civetone, exaltone (6) lactone and oxidocoumarin, ampretlide, exaltondo, cineole (7) acid benzoic acid, cinnamic acid, phenylacetic acid, hydrocinnamic acid ( 8) Esters a) Aliphatic acid esters formate, acetate, propionate,
butyrate ester, valerate ester, heptylate ester,
Hebutine carboxylic acid ester, octyne carboxylic acid ester, lauric acid ester, myristate ester b) Ester of aromatic acid Benzoic acid ester, phenylacetic acid ester, cinnamic acid ester, phthalic acid ester, salicylic acid ester, anisic acid ester, anthranilic acid Esters (9) Nitrogen compounds nitropenzole, indole, skatole, quinoline derivatives, artificial fragrance (10) Halogenated compounds and other compounds bromustyrol, trichloromethylphenyl acetate, carbinol, acetals (11) Natural fragrances a) Plants Fragrance lemon oil, orange oil, butygrain oil, neroli oil, bergamot oil, lavender oil, spike oil, batyu oil, peppermint oil, perilla oil, rosemary oil, symme oil, clary sage oil, palmarosa oil, gingergrass oil , lemongrass oil, citronella oil, vetiver oil, bore rose oil, cinnamon oil, cassia oil, linaloe oil, opobanax oil, peli oil, clove oil, cypress oil, ajwain oil, anise oil, caraway oil, Korean oil, fennel oil , geranium oil, rose oil, sandalwood oil, ylang-ylang oil, cananga oil, jasmine flower oil, tuberose flower oil, star anise oil, orris oil, oakmoss, cedarwood oil, avinis oil, turpentine oil, camphor oil, black letter oil b) Animal fragrances such as musk, civet, castoreum, and ambergris can be prepared by air suspension (fluidized bed) method, spray granulation method,
Methods using physical and mechanical methods such as pan coating method, electrostatic coalescence method, vacuum evaporation method, interfacial polymerization method, 1n-si
tu polymerization method, complex coacervation method, phase separation method from organic solvent system, microencapsulation method by submerged drying, microencapsulation method by melt dispersion cooling method,
It is used after being microencapsulated by physicochemical methods and chemical methods such as in-liquid curing coating microencapsulation method.

In the physical/mechanical method, water-soluble substances such as gelatin, gum arabic, starch, polyvinylpyrrolidone, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, polyvinyl alcohol, polyacrylic acid, ethylcellulose, cellulose acetate, polymethacrylate, polyamide,
Water-insoluble substances such as polyethylene, nitrocellulose, silicone, barahine, carnauba, white beeswax,
stearic acid, palmitic acid, stearyl alcohol,
Waxes such as glyceryl stearate, shellac,
Microencapsulation is performed using enteric substances such as cellulose acetate phthalate and cellulose acetate butyrate.

In physicochemical and chemical methods, polyamides, polyurethanes, polyesters, polysulfonamides, polyria, epoxy compounds, polysulfonates, polycarbonates, polyols, polyisocyanates, polyacrylic acids, polyamines, acrylate compounds, polysulfides, urea, gelatin, rubber, ethyl cellulose,
Microencapsulation is performed using phenol resin, maleic acid resin, polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, polyacrylate, wax, fatty acid, polyethylene, polyvinyl alcohol, and the like.

When forming a surface treatment agent layer using the above resin as the main component, if it is dissolved in a solvent or used as a hot melt, the tensile strength will be too high.
It is better to use it as a fine dispersion such as an emulsion or suspension. In addition, fillers may be added to adjust tensile strength and adhesive strength.

By providing such a surface treatment agent on the sheet, thermal transferability, retransferability, scratch resistance, adhesion of the image during handling, fixation of the sheet during retransfer, and confirmation of whether retransfer has been performed can be improved. It is possible to obtain a retransfer sheet that has good properties such as good scratch resistance and scratch resistance of the retransferred image, can reduce discomfort during pressure-sensitive retransfer, and can attach scent to the retransferred image. .

The ink ribbon used to thermally transfer the desired transfer image onto the retransfer sheet is a wax-based ink that is used in ordinary thermal transfer printers, typewriters, word processors, and other printing devices. However, it is particularly desirable to use an ink ribbon with a two-layer structure consisting of a transferability adjusting layer and an ink layer, which further improves heat-sensitive transferability and pressure-sensitive retransferability. This transferability adjustment layer is provided as a top coat layer on the ink layer, and is a layer that has higher heat-sensitive adhesiveness, hardness, viscosity, and cohesive force than the ink layer, and thus has poor wettability. The heat-sensitive transfer properties onto the retransfer sheet are significantly improved, and pressure-sensitive retransfer can be performed in one piece. Moreover, by providing the ink layer with pressure-sensitive adhesive properties, the -layer and pressure-sensitive retransferability become better. Note that it is also possible to mix fragrance-containing microcapsules into this ink component.

[Examples] Below, some examples of the present invention will be shown to clarify the present invention more specifically, but the present invention is not limited in any way by such descriptions. That goes without saying.

In addition to the following examples and the above-mentioned specific description, the present invention includes various changes, modifications, and changes based on the knowledge of those skilled in the art, as long as they do not depart from the spirit of the present invention. It should be understood that improvements and the like may be made.

Example 1 After coating a polyethylene terephthalate film having a thickness of 50 μm with a surface treatment agent having the following composition in which flavoring microcapsules prepared by a gelatin/polyanion complex coacervation process are dispersed,
By drying at 80° C., a retransfer sheet with a smooth surface and a contact angle with water of 39° and a coefficient of static friction of about 0.42 was obtained. The tensile strength of this surface treatment agent is approximately 20 kg/cm2,
The melt viscosity at 150°C is about 2000-4000 poise.

Surface treatment agent composition Weight part polyethylene 95 [Mitsui Petrochemical Industries, Ltd.]
Chemivar M-200] Fragrance-containing microcapsules 5 The ink is thermally transferred onto the thus obtained retransfer sheet using a thermal transfer type tape writer (P-TOUCB manufactured by Brother Industries, Ltd.) to form the desired color. A dry transfer material having a transferred image was obtained. At that time, it was possible to reduce energy compared to the conventional method and to obtain a good transferred image. Then, as shown in Fig. 2, when pressure-sensitive retransfer was performed using the obtained dry transfer material by applying pressure P to an object to be transferred such as paper or plastic, a clean retransfer was obtained. I was able to get the image. Furthermore, since the sheet moves less and can be retransferred while being fixed, it has the advantage that it is easy to obtain a good retransferred image.

In addition, since the surface treatment agent is also retransferred, it is easy to check whether the ink image has been retransferred.Furthermore, the aroma generated during retransfer can cover up the odor of the ink, making it possible to avoid I was able to retranscribe it without feeling any pleasure. Furthermore, as shown in FIG. 3, since the retransferred ink was covered with a surface treatment agent, the scratch resistance of the retransferred image was improved, and it was also possible to attach a scent to the retransferred image.

Example 2 Using a polyamide film with a thickness of about 100 μm, a surface treatment agent having the following composition in which the fragrance microcapsules used in Example 1 were dispersed was coated on it, dried at 80°C, and washed with water. A retransfer sheet having a smooth surface with a contact angle of 76° and a static friction coefficient of about 0.77 was obtained.

The tensile strength of this surface treatment agent is 15 kg/cm2, and the melt viscosity at 150°C is about 5000 poise.

Surface treatment agent composition Part by weight Ionomer 90 [Mitsui Petrochemical Industries, Ltd.]
Chemipearl 5A-100 Fragrance-containing Microcapsules 10 Then, using the thus obtained retransfer sheet, a dry transfer material was produced in the same manner as in Example 1, and the retransfer image was sensed on the transfer target. When formed by pressure retransfer, a clean retransfer image could be obtained.

In addition, because of the fragrance that is generated, it is possible to retransfer without discomfort, and since the surface treatment agent covers the retransferred ink, the scratch resistance of the retransferred image is also good, and the retransferred image has a fragrance. It was also possible to attach .

[Effects of the Invention] As is clear from the above description, when a dry transfer material is produced using a thermal transfer type printing device, according to the present invention, on the retransfer sheet to be printed,
It has a tensile strength of 1 kg/cm2 or more and 100 kg/cm" or less, and a melting point or softening point of 100°C or more, or
By using a surface treatment agent having a melt viscosity of 1000 voids or more at 00C, a retransfer sheet can be manufactured without considering wettability, so it is possible to form a good transferred image with low energy. Therefore, since the adhesive force is increased, the abrasion resistance is improved, and the coefficient of static friction can also be increased, making it easier to fix the sheet during retransfer. Furthermore, when the fragrance microcapsules are retransferred, the capsules are destroyed by pressure and the fragrance floats around, making it possible to perform the retransferring operation without discomfort. Furthermore, since the surface treatment agent is also retransferred, it is easy to confirm whether retransfer has been performed, and the retransfer quality is also extremely good.

Moreover, since the retransferred surface treatment agent covers the ink image and forms a protective layer, the scratch resistance of the retransferred image is significantly improved, and a scent can be attached to the retransferred image.

[Brief explanation of drawings]

1 to 3 show embodiments embodying the present invention. FIG. 1 is a cross-sectional explanatory diagram showing an example of a retransfer sheet according to the present invention, and FIG. 2 is a state during retransfer work. Figure, 3rd
The figure is a diagram showing the completion of retransfer. In the figure, 10 is a retransfer sheet, 11 is a sheet base material, 12 is a surface treatment agent, 13 is an ink image, and 14 is a fragrance microcapsule.

Claims (3)

[Claims] (1) In a retransfer sheet for producing a dry transfer material produced by a thermal transfer method, the tensile strength of the surface treatment agent formed on one surface of the retransfer sheet is 1 kg/c.
A retransfer sheet having a pressure of at least m^2 and not more than 100 kg/cm^2 and containing fragrance microcapsules that are destroyed by pressure in the composition. (2) The melting point or softening point of the surface treatment agent is 100°C
The retransfer sheet according to claim 1, wherein the retransfer sheet has a melt viscosity of 1000 poise or more at 100°C. (3) The retransfer sheet according to claim 1, wherein the surface treatment agent is formed using a finely dispersed material such as an emulsion.