JPH01108089A - Thermal transfer material - Google Patents

Abstract

PURPOSE:To obtain a thermal transfer material which gives a beautiful print with favorable color separation to an ordinary paper by a simple method, by ensuring that the adhesion between a base and a first ink layer at a specified temperature is greater than that between the first ink layer and a second ink layer, and a specified releasing force is required at that temperature. CONSTITUTION:A thermal transfer material 1 comprises a first ink layer 3 and a second ink layer 4 provided sequentially on a base 2. It is necessary that the adhesion between the base 2 and the first ink layer 3 at 90 deg.C be greater than that between the first ink layer 3 and the second ink layer 4, and a releas ing force required be 1-5g/cm. When the transfer material 1 and an ordinary paper are heat adhered to each other and are then released from each other, the second ink layer 4 is selectively transferred to the ordinary paper serving as a recording material. When coloring agents incorporated respectively in the first and second ink layers have different tones, an image with the tone of the second ink can be obtained at an environmental temperature of 90 deg.C. Thus, favorable color separation properties can be obtained without breakage of the recording material constituted of an ordinary paper or the like, so that a clear two-color recorded image can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Blood Loss 11 The present invention relates to a two-color thermal transfer material for transferring two-color recorded images onto a recording medium made of plain paper or the like.

The Wiibarani thermal transfer recording method has the general characteristics of thermal recording methods, such as the equipment used is lightweight, compact, noiseless, and has excellent operability and maintainability. In addition, it does not require colored processed paper. Furthermore, it has the feature of excellent durability of recorded images, and has been widely used recently.

This thermal transfer recording method generally uses a thermal transfer material formed by coating a sheet-like support with a thermal transferable ink made of a heat-melting binder and a colorant dispersed therein. The ink layer is superimposed on the recording medium so that it is in contact with the recording medium, and heat is supplied from the support side of the heat-sensitive transfer material by a thermal head to transfer the melted ink layer onto the recording medium. A transfer recording image is formed thereon in accordance with the shape of heat supply.

Furthermore, there is a strong market demand for two-color printing while taking advantage of the advantages of the thermal transfer recording method, and various techniques for obtaining two-color printing have been proposed.

Conventionally, as a method for printing in two colors on plain paper using a thermal transfer recording method, Japanese Patent Application Laid-Open No. 148591/1983 discloses two heat-melting high-melting point printing methods in which different colorants are contained on a base material. Ink layer A and low melting point ink FIB are laminated sequentially from the base material side, and in the case of low heat applied energy, only the low melting point ink layer B is transferred onto the plain paper, and in the case of high heat applied energy, the heat melting ink FIA% A two-color thermal transfer recording element is disclosed that provides a two-color recorded image by transferring both B and B.

Furthermore, JP-A No. 59-64389 discloses a two-color thermal transfer in which an ink layer is provided on a base material, consisting of an ink that melts and leaches when heated, and an ink that melts and peels off at a temperature higher than the melting and leaching temperature. An ink sheet is disclosed.

In these methods, two-color printing is performed by changing the temperature of the ink layer by changing the energy applied to the thermal head in two stages. However, when high energy is applied to raise the temperature of the ink layer to a high temperature, a relatively low-temperature area is created around the high-temperature area due to heat diffusion, so that the area printed at a high temperature is printed at a low temperature. Edges of colors will appear.

Furthermore, if high energy is applied to the thermal head, it will take a relatively long time for the temperature to drop.
Colors printed at low temperatures tend to trail behind areas printed at high temperatures.

In addition, in both methods, there is a restriction that a material with a relatively low melting point must be used as an ink material for printing at a low temperature, resulting in problems such as background smearing and a decrease in storage stability.

As a technique for solving this drawback, the present applicant previously proposed a recording method in Japanese Patent Application No. 60-298831.

In this recording method, at least first and second
By using a heat-sensitive transfer material provided with an ink layer and applying heat to the heat-sensitive transfer material, the second ink layer can be selectively or , a method in which both the first and second ink layers are transferred to a recording medium.

This recording method made it possible to solve various problems such as "fringing" and r-tailing in printing mentioned above, but even with this new two-color recording method, it is possible to improve printing quality even further. Improvements are desired. This improvement in printing quality is achieved, for example, by improving two-color separation, that is, when the peeling time is short, the first ink layer and the second ink layer are clearly separated, resulting in a clear transferred image of the second ink layer. This is achieved by obtaining a transferred image of both the first and second ink layers when the peeling time is long, but achieving such clear two-color separation is difficult to achieve by thermal It has not always been easy because it is related to the actual recording conditions such as application conditions or peeling conditions.

The main object of the present invention is to provide a thermal transfer material that eliminates the above-mentioned drawbacks of the conventional two-color printing method and provides beautiful printing with good color separation on plain paper using a simple method. It's about doing.

1. As a result of intensive research, the present inventors have obtained the above-mentioned patent application published in 1983.
In order to improve the selective transferability of the first and second ink layers in the recording method of No. 298831, it is necessary to We found that it is essential that the adhesive force (F2) has a certain magnitude relationship at a specific temperature, and that the peeling force, which is an index of the adhesive force F2, has a unique value under specific conditions. Ta.

The thermal transfer material of the present invention is based on the above knowledge,
More specifically, at least a first ink layer and a second ink layer are sequentially provided on a support from the support side; CF+ ) is greater than the adhesive force (F, ) between the first ink layer and the second ink layer, and the peeling force is 1 to 5 g/
It is characterized by being cm.

Hereinafter, in the descriptions below 4 for explaining the present invention in further detail, with reference to the drawings as necessary, 1% representing a quantitative ratio
"and 1 part" are based on weight unless otherwise specified.

Figure 1 is a schematic cross-sectional view in the thickness direction showing a basic aspect of the heat-sensitive transfer material of the present invention. Referring to FIG. 1, a thermal transfer material 1 of the present invention is formed by sequentially providing a first ink Pi3 and a second ink layer 4 on a support 2. As shown in FIG.

In the thermal transfer material of the present invention, at 90°C, the adhesive force between the support 2 and the first ink layer 3 (FI) is greater than the adhesive force between the first ink layer 3 and the second ink layer 4 (F2). Big(
Fl>F2) and the peeling force at this temperature is 1 to 5 g/cm.

Specifically, the magnitude relationship of the adhesive force F1%F2 at the temperature and the value of the peeling force are easily confirmed, for example, by the following means.

That is, a thermal transfer material 1 in the form of a sheet with a width (d) of about 1 to 2 cm and a length of about 30° C. and a recording medium made of plain paper (for example, with a Bekk smoothness of 200 seconds) are combined into a thermal transfer material. The second ink layer 4 of the second ink layer 1 is superimposed so as to be in contact with the recording medium, and a pattern (for example, solid printing) is applied to the thermal transfer material 1 from the side of the support 2 using a thermal head in the same manner as in a normal thermal transfer recording method. heat is applied to the After applying heat, the thermal transfer material 1 and the plain paper are kept at -60 to +27 without being separated.
The sample was loaded into a tensile strength tester (Tensilon RTM-100, manufactured by Toyo Baldwin Co., Ltd.) equipped with a constant temperature bath capable of controlling the temperature at 0° C. so that the peel angle was 180 degrees. Using the above test machine, the environmental temperature (temperature of the thermostat) was 90℃.
The load required to peel off the thermal transfer material 1 and the plain paper at a peeling speed of 300 mm/sec was measured, and the average value of the load from the start of peeling to the end of peeling was determined. The value obtained by dividing the average value of this load by the width (d) of the sample thermal transfer material is defined as the peeling force in the present invention.

On the other hand, in the same manner as above, when the thermal transfer material 1 and plain paper are thermally bonded and then peeled off at an environmental temperature of 90° C., a peeling angle of 180 degrees, and a peeling speed of 300 mm/see. ;F I > F 2 is confirmed by selectively transferring the second ink layer 4 to the plain paper serving as the recording medium. At this time, if the color tone of the colorant contained in the first ink layer and the second ink layer is changed, an image with the color tone of the second ink can be obtained at an environmental temperature of 90°C, and the adhesive force F
, ,F, can be easily confirmed.

In the thermal transfer material of the present invention having the above characteristics,
When the above environmental temperature (temperature of the thermostat) is 40°C, the first
From the point of view of making the thermal transfer recording device used for actual recording more compact, it is important that both the ink layer 3 and the second ink layer 4 are transferred to the recording medium (that is, Fl<F2 at 40° C.). preferable. This more than F r <
The relationship of F2 is also easily confirmed by the fact that an image with the tone of the first ink is obtained on the recording medium at the above-mentioned environmental temperature of 40°C.

In addition, in the present invention, when evaluating the above-mentioned magnitude of the adhesive force between the second ink layer and the first ink layer (F2) and the adhesive force between the first ink layer and the support (FI), each Separation between the second ink layer and the first ink layer when the ink layer is transferred to the recording medium, and the separation between the first ink layer and the first ink layer
Only the relative ease of separation between the supports shall be considered, and the mode of peeling between the ink layers (e.g., whether the position of peeling is at a strict interface between the second ink layer and the first ink layer, Alternatively, the extent to which the adhesive layer (described later) remains on the heat-sensitive transfer material after transfer, etc.) is not considered in the evaluation of adhesive strength.

In the thermal transfer material 1 of the present invention, the above peeling force is 1 to 5.
g/am, 2-4 g
/ cm is preferred. This peeling force is 1
If it is less than g/cm, separation within the second ink layer 4 is likely to occur, reducing the reproducibility of the second ink layer transfer, or the separation between the first and second ink layers may occur due to the heat application part and non-contact. The "cut" with the heat application section is reduced, and the selectivity of separation between these ink layers is reduced.

On the other hand, if the peeling force exceeds 5 g/cm, the adhesive force between the first ink layer and the second ink layer adhered to the recording medium by heat application is too high, and the peeling force between the support and the first ink layer is too high. It becomes difficult to maintain a sufficient difference between the adhesive force (FI) between the ink layers and/or the adhesive force (F3) between the second inter-recorded bodies, and the selective transferability of the second ink layer becomes insufficient. As a result, clear color separation cannot be obtained and color reproducibility is also poor.

On the other hand, when the above peeling force is 1 to 5 Kg/c
Within the range of m, the recording medium made of plain paper or the like is not destroyed, and the color separation property is good, so that a clear recorded image can be obtained.

The thermal transfer material 1 of the present invention can be used at a specific temperature (
At 90°C (or
The temperature (0° C.) is used only to define the characteristics of the thermal transfer material 1 itself, and does not define the conditions for actual use (thermal transfer recording) of the thermal transfer material.

In the thermal transfer material 1 of the present invention exhibiting the above-mentioned characteristics, it is desirable that the cohesive force of the first ink layer at 90° C. is greater than that of the second ink layer. The greater the difference in the cohesive force of the ink layers, the
The mixing of the first ink into the second ink is reduced, and the second ink is mixed with the second ink.
The color tone of the recorded image formed by selective transfer of ink becomes clearer. Furthermore, in addition to having a large difference in cohesive force, it is desirable that the first ink layer 3 and the second ink layer 4 are substantially incompatible, that is, they are composed of different materials. In order to satisfy the requirements that there is a large difference in cohesive force and that they are not compatible, for example, the first ink layer is made of resins as exemplified later, the second ink layer is made of waxes, and the binder 100 of each is used. It is desirable that the content of each component is 50 parts or more.

Further, as shown in FIG. 2, a separation layer 5 may be provided between the first ink layer 3 and the second ink layer 4. Adhesive force (
F2), but if the material of this separation layer 5 is made to have similar characteristics to the second ink layer of the embodiment shown in FIG.
The characteristics described in the embodiment of FIG. 1 are not necessarily required, and the second ink layer may be made of a material that can increase the adhesion to the recording medium, for example, the same material as the first ink layer of the embodiment of FIG. 1. This makes it possible to use this method, which is further advantageous in improving printing quality.

Furthermore, the configuration shown in FIG. 2 is advantageous in that the possibility of separation in the second ink layer 4 can be extremely reduced compared to the case where the separation layer 5 is not provided, so that there is no variation in printing density.

Also in the embodiment shown in FIG. 2, the peeling force is 1 g/
If the temperature is less than cm, the color separation between the first ink layer and the second ink layer will be poor, but this is because, for example, the melt viscosity of the separation layer 5 at this temperature is too low, and the pressure of the thermal head actually used is too low. It is presumed that this is because local collapse of the separation layer 5 is likely to occur due to the load (usually about 100 to 300 g).

Next, the structure of each part of the thermal transfer material 1 of the present invention will be explained in detail.

The support 2 of the thermal transfer material of the present invention has a thickness of 3 μm.
A plastic film such as polyester, aramid, nylon, polycarbonate, etc., or paper such as capacitor paper with a thickness of about 12 μm is used. Excessively thick materials are not preferable because they have poor thermal conductivity. As long as it has high heat resistance and strength, it is also possible to use a thin film with a thickness of 3 μm or less.

In the thermal transfer material 1 of the present invention, it is desirable that the entire ink layer (or adhesive layer) on the support 2 has a thickness of 20 μm or less. Moreover, the thickness of the first ink layer 3, the second ink layer 4, and the separation layer 5 is preferably in the range of 0.5 to 10 μm.

In addition, a layer for supplementing heat resistance may be provided on the back surface of the support 2 (the surface opposite to the surface on which the ink layer is formed).

Further, when performing a thermal transfer recording method using the thermal transfer material 1 of the present invention, in addition to a thermal head, commonly used heating means such as infrared rays and laser beams can be used as the heating means. In addition, in the case of electrical heating, if necessary, a conductive Fl (not shown) made of a thin film of aluminum or the like is provided between the support 2 and the first ink layer 3 to serve as a return electrode, or The ink may be electrically conductive.

The first ink layer 3 constituting the thermal transfer layer on the support 2 is formed by dispersing a colorant of a first tone in a binder (this does not mean to exclude the state in which it is dissolved); No. 4 is formed by dispersing a coloring agent of a second tone in a binder.

In the thermal transfer material 1 of the present invention, when it is desired to obtain the color tone of the first ink layer 3 and the color tone of the second ink layer 4, a dark color such as black is applied to the first ink layer 3 and a dark color such as black is applied to the second ink layer 4. It is preferable to arrange a bright color such as yellow. Also, if you want to obtain the color tone of the first ink layer 3 and the color mixture of the color tone of the first ink layer 3 and the color tone of the second ink layer 4, for example, If the first ink layer 3 is colored yellow and the second ink layer 4 is colored magenta, magenta and red can be obtained. In addition, by changing the pigment concentration or layer thickness ratio of each layer, various recordings of two different colors can be obtained.

Colorants include carbon black, nigrosine dye,
Lamp Black, Sudan Black SM, Alkali Blue, First Niro 01 Benzidine Niro, Pigment
Niro, India First Orange, Irgazine Red, Varanitroaniline Red, Toluidine Red, Varanitroaniline Red, Carmine FB1 Permanent Bordeaux FRR, Pigment Orange R1
Linole Red 20. Lake Red c10-Damine FB, Rhodamine B Lake, Methyl Violet B
Lake, Phthalocyanine Blue, Pigment Blue, Prilliant Green B1 Phthalocyanine Green, Oil Yellow GG, Zapon First Niro CGG,
Kayaset Y963, Kayaset YG, Sumiblast・
Niro GG1 Zapon First Orange RR, Oil・
Scarlet, Sumiplast Orange 01 Orazole
Brown B, Pomelo First Scarlet CG, Eisensbiron Red “B E H, Oil Pink OP
5 Victoria Blue F4R1 First Gen Blue 50
07, Sudan blue, oil peacock blue, etc.
All known dyes and pigments can be used (two or more types in combination if necessary). In addition, metal powders such as copper powder and aluminum powder, mineral powders such as mica, etc. can be used. Furthermore, as other additives, surfactants, plasticizers, mineral oils, vegetable oils, fillers, etc. may be appropriately added to the ink layer or the adhesive layer.

The binder used for the first ink layer and the second ink layer and the material used for the separation layer include natural waxes such as spermaceti wax, beeswax, lanolin, carnauba wax, candelilla wax, montan wax, and ceresin wax, paraffin wax, and microcrystalline wax. Petroleum wax such as wax, M wax, ester wax, low molecular weight polyethylene, synthetic wax such as Fischer-Tropsch wax, higher fatty acids such as uric acid, myristic acid, valmitic acid, stearic acid, behenic acid, stearyl alcohol, behenyl alcohol, etc. higher alcohols, sucrose fatty acid esters, esters such as sorbitan fatty acid esters, waxes such as amides such as oleylamide; or polyolefin resins, polyamide resins, polyester resins, epoxy resins, polyurethane resins, Polyacrylic resin, polyvinyl chloride resin, cellulose resin, polyvinyl alcohol resin, petroleum resin, phenolic resin, polystyrene resin, vinyl acetate resin, natural rubber, styrene-butadiene rubber, isoprene rubber, chlorobrene Elastomers such as rubber, resins such as polyisobutylene, polybutene, etc. are used in combination of 2f1 or more as necessary.

Coloring ie! The content of the colorant in the first ink layer and the second ink layer is 1 to 1 for each of the first and second ink layers.
90%, more preferably a range of 2 to 80%.

Adjust the molecular weight, crystallinity, etc. of the above-mentioned materials as appropriate,
Alternatively, an ink layer or adhesive layer having the above characteristics can be obtained by mixing a plurality of the above materials.

In manufacturing the thermal transfer material of the present invention, a coating solution is prepared by mixing the materials constituting each of the layers described above with an organic solvent that dissolves a binder such as methyl ethyl ketone, xylene, or tetrahydrofuran, and each layer is sequentially coated. All you have to do is work it out.

Alternatively, after mixing the materials constituting each layer, they may be heated and melted to perform a so-called hot melt coating in the molten state.

Furthermore, the materials constituting each layer may be mixed and applied as an aqueous emulsion by adding a dispersant such as a surfactant. Furthermore, using these methods, it is also possible to coat each layer using a different method.

As described above, according to the present invention, at least the first ink layer and the second ink layer are provided on the support, and the support -
The adhesive force between the first ink layer (F+) and the first ink layer -
A thermal transfer material is provided in which the adhesive force CF2·) between the second ink layer has a specific magnitude relationship at a specific temperature, and the peeling force at the temperature exhibits a constant value.

By using the thermal transfer material of the present invention, beautiful two-color printing can be performed on plain paper, etc. by simply changing the time required for separating the recording medium and the thermal transfer material after applying energy in a pattern. can.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

In addition, in the following examples, melt viscosity values are measured using a rotational viscometer (E type).

Ink 1> The liquid amount, melting point, and melt viscosity all indicate values for solid content. ) Ink 1 was prepared by thoroughly mixing each component of the above formulation.

This ink 1 was coated on a polyethylene terephthalate film (hereinafter referred to as PET) support with a thickness of 6 μm, and
It was dried at 0° C. to form a first ink layer with a coating weight of 2 g/rn”.

Ink 2> was coated on the previously formed first ink layer, water was evaporated at 70°C, a second ink layer with a coating weight of 3 god was formed, and the layer structure shown in Figure 1 was obtained. A thermal transfer material (I) was obtained.

Ink 3 and Ink 4 were prepared. As in Example 1, P
After forming a first ink layer on the ET support with Ink 1, a separation layer was formed with Ink 3 with a coating amount of 1.0 g/rn'', and further with Ink 4 with a coating amount of 2.5 g/rn''. A second ink layer was formed to obtain a thermal transfer material (II) having the layer structure shown in FIG.

Ink 5 and Ink 6 were prepared. On a PET support with a thickness of 4.5 μm, a coating amount of 2.0 g/rn′ of the first ink 5 was applied.
An ink layer was formed by sequentially forming an ink layer with a coating amount of 1.0 g/rn' using ink 6, and a second ink layer with a coating amount of 2.5 g/rn' using ink 4, and forming a thermal transfer material (III). I got it.

Thermal transfer materials (1), (Iri, (I
II) into sheets with a width of 2 cm and a length of 10 cm, and the second ink layer side of each was cut into sheets with a smoothness of 20.
Overlaid with high-quality paper for 0 seconds, using a thermal head as a heat source, pulse period 1.4 m5ec, pulse width 0,7
m5ec, applied energy 13 JIJ / 111
At step 112, patterned heat corresponding to solid black printing was applied to the heat-sensitive transfer material to thermally bond the heat-sensitive transfer recording material and the high-quality paper. The superimposed body of the heat-sensitive transfer material and high-quality paper heat-adhered in this way was tested using a tensile strength tester (Tensilon RTM-10).
0, manufactured by Toyo Baldwin), and the environmental temperature is 90.
°C, peeling angle 180 degrees, peeling speed 3 Q Q mm/s
The load required when peeling the heat-sensitive transfer material from the high-quality paper was measured using EC, and the average value of the load from the start of peeling to the end of peeling was determined. The value obtained by dividing the average value of this load by the width of the heat-sensitive transfer material was defined as the peeling force. The measurement results are shown in the table below.

In addition, in the above peel test, thermal transfer materials (1, (
When both II) and (III) were used, a clear blue recorded image was obtained by transfer of the second ink layer, and the first ink layer remained on the PET support side (Fl>F2).

Next, the above-mentioned thermal transfer materials (I), (■ri, and (nr)) were mounted on a Type Star 6 manufactured by Canon ■, and printing was performed.

- More specifically, referring to the schematic cross-sectional view in the thickness direction of the thermal transfer material in FIG. 3, the thermal transfer material 1 is transferred to the thermal head 6 (so that the second ink layer faces the recording medium) While it was brought into pressure contact with the recording medium, heat was applied in a pattern from the thermal head 6 to the thermal transfer material 1 . When selectively transferring the second ink layer to the recording medium 7, the recording medium 7 and the thermal transfer material 1 were separated from each other at the terminal end 6a of the thermal head 6 immediately after the heat application. On the other hand, when both the first ink layer and the second ink layer are transferred to the recording medium, the peeling control member 8 is moved in the direction of arrow A and placed at position 8a (dotted line), and the same procedure as above is performed. After the recording medium 7 and the thermal transfer material 1 are brought into pressure contact and patterned heat is applied by the thermal head 6, the position of the peeling control member 8 (8
It peeled off in a). In FIG. 3, the thermal transfer material 1 was unwound from the unwinding core 9a, brought into pressure contact with the recording medium 7 on the platen lo by the thermal head 6, and then wound onto the winding core 9b.

Referring to FIG. 3, as the thermal head 6, a ROHM head with a distance of 350μ from the center of the heat generating part to the end 6a of the thermal head is used, and a carriage on which the thermal head 6 and the thermal transfer material ribbon 1 are mounted is used. 11 is 8 motion speed 5
It was moved in the direction of arrow B at 0 mm/sec. Therefore, when peeling off rapidly, the time from heat application to peeling was about 7 m5ec.

Further, a peeling control member 8 for delaying peeling is attached at a position downstream constraint 5 (J2=5) of the transfer direction of the thermal transfer material 1 from the terminal end 6a of the thermal head. Therefore, when peeling was delayed, the time from heat application to peeling was about 100 m5ec.

When printing was performed on plain paper as described above using the thermal transfer materials (1), (II) and (2) above, blue prints appeared when peeled off after a period of time after heat application; A black print was obtained upon delayed peeling.

Also, the position of the peeling control member 8 is changed from u=2■ to 1
Even when changing up to z 20 mI, there was almost no change in the printing results.

A thermal transfer material (
IT) was obtained.

A thermal transfer material (V) was obtained in the same manner as in Example 3, except that the separation layer was formed using Ink 8, which was obtained by sufficiently mixing Ink 8.

The thermal transfer materials (TV) and (V) were thermally bonded to high-quality paper using a thermal head in the same manner as when using the thermal transfer materials (1), (!■), and (III) of the present invention, and the tensile strength was Peeling force was measured using a testing machine. In addition, the above thermal transfer material (
IV) and (V) were printed with Typestar 6 in the same way as when using the thermal transfer material (I), and when they peeled off rapidly, a blue-black color appeared with an extremely large amount of black spots mixed in with the blue print. However, only a recorded image of 100% was obtained, which was not suitable for practical use.

The peeling force measurement results and two-color printing results for the thermal transfer materials (1) to (V) obtained above are summarized in the table below.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 to 3 are schematic cross-sectional views of the thermal transfer material as viewed in the thickness direction, and FIG. 1 and N2 are the layer configurations of the thermal transfer material of the present invention. For example, FIG. 3 shows one embodiment of a thermal transfer recording apparatus used when performing two-color recording using the thermal transfer material of the present invention. 1...Thermal transfer material 2...Support 3...First ink layer 4...Second ink layer 5...Separation layer 6...Thermal head 7...Recorded object 8. ... Peeling control member 9a ... Unwinding core 9b ... Winding core 10 ... Platen 11 ... Carriage old 1: Fig. 1 Beak-1'' Fig. 1 Fig. 3

Claims (1)

[Claims] At least a first ink layer and a second ink layer are sequentially provided on a support from the support side, and the support and the first ink layer are bonded at 90°C. A thermal transfer material characterized in that the force (F_1) is greater than the adhesive force (F_2) between the first ink layer and the second ink layer, and the peeling force is 1 to 5 g/cm.