JPH04235087A - Ink ribbon for producing dry transfer material - Google Patents

Abstract

PURPOSE:To obtain a good image by a pressure-sensitive bonding method by providing a heat-sensitive adhesive layer and a pressure-sensitive retransfer regulating layer containing microcapsules incorporating an adhesive on a filmy ribbon substrate. CONSTITUTION:A pressure-sensitive retransfer regulating layer 2 formed by containing microcapsules 4 incorporating an adhesive 3 and a coloring agent 5 and a heat-sensitive adhesive layer 6 containing a coloring agent 17 are provided in order on a filmy ribbon substrate 1. As the filmy ribbon substrate 1, a polyethylene trephthalate or the like is used. As the adhesive, a single pack-type cyanoacrylate instantaneous adhesive, a two pack main liquid-type epoxy adhesive, or the like is used. As a material for a microcapsule wall substance, a melamine-formaldehyde resin or the like is used. As the coloring agent selected for the pressure-sensitive retransfer regulating layer 2 and the heat-sensitive adhesive layer 6, a carbon black or other pigments is used.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to an ink ribbon for producing dry transfer materials, and in particular, it can be used in printers, typewriters, word processors, etc. having a heat-sensitive transfer mechanism. The present invention relates to an ink ribbon for producing a dry transfer material, which is capable of being transferred and printed on a surface, and is also capable of pressure-sensitive re-transfer of an ink transfer image obtained by thermal transfer onto a desired transfer object using external pressure.

0002

2. Description of the Related Art In recent years, ink ribbons for producing dry transfer materials have been put into practical use. Then, the ribbon cartridge containing the ink ribbon for dry transfer material production is installed in the dry transfer material production equipment, and one of the many heat generating elements of the thermal head generates heat corresponding to the characters, figures, etc. to be recorded. By causing only the elements to generate heat, the main ink component of the ink ribbon for producing dry transfer material is thermally transferred onto the retransfer sheet for dry transfer material. Thereby, it is possible to manufacture a dry transfer material having a desired ink transfer image such as a character or a figure.

For example, regarding the structure of an ink ribbon for producing a dry transfer material, as described in JP-A-63-128990 and JP-A-63-128991, it is possible to A two-layer structure in which a homogeneous ink layer containing a resin and a pigment having pressure-sensitive adhesive properties and a homogeneous layer containing a resin having heat-sensitive adhesive properties are arranged, or JP-A-63-251287. As described in the publication, a homogeneous layer containing a resin having pressure-sensitive adhesive properties on a film-like ribbon base material;
Ink ribbons for producing dry transfer materials have been manufactured using either a two-layer structure in which a resin having heat-sensitive adhesive properties and a homogeneous ink layer containing a pigment are arranged.

0004

[Problem to be Solved by the Invention] It is an object of the present invention to produce a retransfer sheet using the ink ribbon for dry transfer material production produced as described above.
An ink transfer image is formed by thermally transferring the main component of the ink onto the sheet. However, when performing pressure-sensitive retransfer from the retransfer sheet, there is a problem in that the pressure-sensitive retransferability of the ink transfer image to the transferred object is strictly inferior.

Specifically, in order to complete pressure-sensitive retransfer, the surface of the retransfer sheet on which the ink transfer image is formed must be tightly fixed to a transfer object such as paper, plastic, metal, or wood. After this, it is necessary to continue rubbing for a certain period of time from the side of the retransfer sheet opposite to the side on which the ink transfer image was formed. Therefore, if the retransfer sheet is not sufficiently fixed to the transferred object and the retransfer sheet shifts, it may become blurred, crushed, or spread, making it difficult to obtain a good pressure-sensitive retransfer image. It had

The present invention has been made to solve these problems, and its first purpose is to:
To provide an ink ribbon for producing a dry transfer material, which allows an ink transfer image obtained by transferring onto a retransfer sheet by a thermal transfer method to be extremely easily pressure-sensitively retransferred onto an object to be transferred. It's there.

The second object is to greatly improve the cohesive force of the ink transfer image obtained by transferring it onto a retransfer sheet using a thermal transfer method, thereby making it possible to transfer the ink transfer image onto the object to be transferred. To provide an ink ribbon for producing a dry transfer material that enables pressure-sensitive retransfer in a perfect form without blurring or crushing.

Next, the third object is to significantly improve the surface properties such as scratch resistance of a pressure-sensitive retransfer image obtained by pressure-sensitive retransfer of an ink transfer image onto a transfer object. An object of the present invention is to provide an ink ribbon for producing dry transfer materials.

Furthermore, the fourth object is to provide an ink ribbon for dry transfer material production that achieves all of the above three objects with a simpler ribbon configuration, thereby reducing manufacturing costs. It is in a place where we provide.

0010

[Means for Solving the Problems] The ink ribbon for producing dry transfer materials of the present invention is capable of transferring ink transfer images such as characters and figures obtained using a thermal transfer method onto a desired transfer material by external pressure. In an ink ribbon for producing a dry transfer material that can be pressure-sensitive re-transferred, the pressure-sensitive re-transferable ink ribbon is composed of a heat-sensitive adhesive layer and microcapsules containing an adhesive on a film-like ribbon base material. It is characterized by providing a transfer adjustment layer.

[0011]

[Operation] According to the above-described structure of the present invention, a heat-sensitive adhesive layer and a pressure-sensitive retransfer adjustment layer containing microcapsules containing an adhesive are provided on a film-like ribbon base material. With the two-layer structure, the ink transfer image printed on the retransfer sheet using a thermal transfer method is applied pressure from the side of the retransfer sheet opposite to the side on which the ink transfer image was formed. Pressure-sensitive retransfer onto the desired transfer material such as paper, plastic, metal, wood, etc. is possible by simply adding instantaneously. After pressure-sensitive re-transfer, there is no residual ink on the re-transfer sheet, and furthermore, the pressure-sensitive re-transfer printed image is not crushed, faded, spread, or brittle, and is therefore firmly attached to the transferred material. It is possible to obtain good images with pressure-sensitive adhesive bonding.

Furthermore, since it has a two-layer structure, it is possible to reduce the actual manufacturing cost.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an enlarged cross-sectional view of an ink ribbon for producing a dry transfer material according to the present invention.

An ink ribbon for producing a dry transfer material is produced by providing a pressure-sensitive retransfer adjustment layer 2 and a heat-sensitive adhesive layer 6 on a film-like ribbon base material 1, as shown in FIG. The pressure-sensitive retransfer adjustment layer 2 is a layer containing microcapsules 4 containing an adhesive 3 therein. Further, the heat-sensitive adhesive layer 6 is a layer containing a heat-sensitive adhesive composition.

The thermal head 7 is composed of a large number of heating elements (not shown), and has a mechanism in which only the heating elements corresponding to the characters, figures, etc. to be recorded generate heat during recording.

[0016] The adhesive used in this example is not limited in general, but preferably hardens in a very short time and
Particularly desirable are adhesives which at the same time have adhesive strength. That is, 1
Liquid type cyanoacrylate instant adhesive, two-part main liquid type epoxy adhesive, two-part main liquid type acrylic adhesive, two-part type acrylic adhesive with main liquid and primer type, Alternatively, it is particularly desirable to use either a main liquid and a primer type cyanoacrylate instant adhesive.

Examples of the microcapsule wall material that can be destroyed by external pressure include melamine-formaldehyde resin, urea-formaldehyde resin, gelatin,
Gum arabic, polyvinyl alcohol, egg white, alginate, zein, casein, methylcellulose
Known materials such as carbon dioxide, carboxymethyl cellulose, carrageenan, ethylene-maleic anhydride copolymer, vinyl methyl ether-maleic anhydride copolymer, urea-formalin resin, melamine-formalin resin, polyurethane resin, polyurea, etc. It is possible to use the following materials.

Further, the capsule diameter of the microcapsules 4 is preferably 0.1 to 20 μm, but preferably 0.5 to 20 μm in order to obtain a good pressure-sensitive retransfer image with an external pressure equivalent to the stamp pressure. A thickness of 10 μm is particularly desirable. In other words, the capsule diameter of microcapsule 4 is 0.1 μm.
If it is less than that, the minimum pressure value required to destroy the microcapsules 4 increases significantly, making it difficult to destroy the microcapsules 4. On the other hand, when the capsule diameter of the microcapsules 4 is 20 μm or more, the minimum pressure value required to destroy the microcapsules 4 is significantly reduced, making the microcapsules 4 easy to destroy, and the storage stability of the microcapsules 4 is reduced. Therefore, the above-mentioned range is particularly desirable.

Similarly, it is particularly desirable that the coating thickness be 1 to 20 μm, preferably 1 to 10 μm. In other words, if the coating thickness is less than 1 μm, the adhesive strength necessary for good pressure-sensitive retransfer cannot be obtained. On the other hand, when the coating thickness is 20 μm or more and the capsule diameter of the microcapsules 4 is small, the microcapsules 4 are difficult to break efficiently, and when the coating thickness is 20 μm or more and the capsule diameter of the microcapsules 4 is large, The above range is particularly desirable since the microcapsules 4 are easily destroyed.

The film-like ribbon base material 1 used in the ink ribbon for producing a dry transfer material in this embodiment is not limited in any way, but is preferably a base material conventionally used as a base material for thermal transfer ink ribbons. Known ones are preferred. Most preferably, the thermal head is in close contact with the thermal head, so the film-like ribbon base material 1 is made of polyethylene terephthalate or polybutylene terephthalate.
Polyester, polyimide, polycarbonate, etc.
Particularly desirable are resin films made of polysulfone, polyethersulfone, polyphenylene sulfide, etc., or papers such as capacitor paper and glassine paper.

[0021]Although the thickness thereof will be appropriately determined depending on the type of material, it is preferably 1 to 30 μm. However, in order to obtain a good ink transfer image,
It is particularly desirable to use a thickness preferably in the range of 3 to 20 μm. That is, if the thickness of the film-like ribbon base material is less than 1 μm, the running performance of the ink ribbon will be significantly reduced, while if the thickness of the film-like ribbon base material is 30 μm or more, the thermal head 7 will The above range is particularly desirable since the amount of heat required to make each heating element generate heat during recording increases.

Furthermore, dispersants or emulsifiers mainly used when microcapsulating the adhesive 3 and preparing microcapsule liquid include sodium hexametaphosphate and sodium condensed naphthalene sulfonate. known dispersants such as ionic surfactants, glycerin fatty acid esters, sucrose fatty acid esters,
It is possible to use known emulsifiers such as nonionic surfactants such as sorbitan fatty acid esters and propylene glycol fatty acid esters.

Furthermore, as the coloring agent contained in at least one layer selected from the pressure-sensitive retransfer adjustment layer 2 and the heat-sensitive adhesive layer 6, pigments such as carbon black are mainly used. However, in order to express various hues, it is possible to use dyes such as leuco-type dyes that develop color with acids, diazo-type dyes that develop color with bases, etc., as necessary, and there are no limitations. It is something that cannot be done.

[0024] Coloring components of leuco dyes that develop color with acids include known materials such as phthalide compounds, fluoran compounds, lactone compounds, triphenylmethane compounds, rhodamine lactam compounds, and quinone compounds. can be mainly used. A phenol-based substance or an acidic substance is mainly used as a color developer, and a monochromatic color is produced by a color-forming reaction proceeding with a color-forming component and a color-forming temperature.

Diazo dyes that develop color with bases are composed of a combination of a diazo compound, which is an acidic substance, and a coupling compound, which is a basic dye precursor. It is monochromatic.

Next, as the heat-sensitive adhesive composition used as a component constituting the heat-sensitive adhesive layer 6, resins having particularly high heat-sensitive adhesive properties, such as ethylene-vinyl acetate copolymer, polyvinyl acetate, ionomer, acrylic type From polymers, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyvinylpyrrolidone, polyvinyl alcohol, polyamide, ethyl cellulose, etc. It is used by containing at least one selected type.

Further, the pressure-sensitive retransfer adjustment layer 2 and the heat-sensitive adhesive layer 6 may contain a tackifier, a binder, a surface modifier, etc.

[0028] The tackifier mainly has the functions of improving the adhesion and hardness of ink, imparting cohesive force, imparting adhesive force, and tackifying the heat-sensitive adhesive composition and the pressure-sensitive adhesive composition. Specific examples thereof include: Examples of the resin used include petroleum resins, rosin resins, ketone resins, polyamide resins, phenol resins, and the like.

As binders, lipophilic binders such as protein-based binders such as casein and zein, cellulose-based binders such as nitrocellulose and acetylcellulose, and polyvinyl alcohol are used. - Le,
polyethylene oxide, carboxymethyl cellulose,
Water-soluble binders such as polyvinylpyrrolidone and hydroxypropylcellulose, polyamide resins, polyester resins, polyethylene resins, polypropylene resins, polystyrene resins, polyvinyl chloride resins, ethylene-vinyl acetate copolymers, polymethyl methacrylic acid A resin binder containing at least one type of thermoplastic binder such as methyl ionomer resin is used, and a resin binder containing at least one thermoplastic binder selected from thermoplastic binders such as methyl ionomer resin is used. Wax containing at least one type selected from animal waxes such as beeswax, lanolin and spermaceti, mineral waxes such as montan wax and ceresin, and petroleum waxes such as paraffin wax and microcrystalline wax. It is also possible to use a binder based on the binder.

It is also possible to use a combination of at least one type selected from resin binders and at least one type selected from wax type binders, and there is no problem.

[0031] The surface modifier reduces stickiness and stickiness on the surface of the ink ribbon and reduces frictional resistance, thereby providing good storage stability without blocking and good ribbon running properties without meandering or slipping. Specific examples thereof include known materials such as fluorine-based polymers and silicone-based polymers.

[0032] Then, on the surface of the film-like ribbon substrate 1 opposite to the coated surface of the pressure-sensitive retransfer adjustment layer 2 and the heat-sensitive adhesive layer 6, an anti-sticking layer containing a heat-resistant resin such as a silicone resin is provided. Furthermore, there is no problem in including at least one kind selected from pigments such as barium sulfate, titanium oxide, aluminum hydroxide, zinc oxide, and calcium carbonate.

The present embodiment will be described in detail below, but it goes without saying that the present invention is not limited in any way by the description of the embodiment. Furthermore, it is understood that, in addition to the following examples, various changes, modifications, improvements, etc. can be made to the present invention based on the knowledge of those skilled in the art, as long as they do not depart from the spirit of the present invention. This is where it should be done.

(Example 1) As shown in FIG. 1, a pressure-sensitive retransfer device comprising microcapsules 4 containing and encapsulating an adhesive 3 and a coloring agent 5 on a film-like ribbon substrate 1. An adjustment layer 2 and a heat-sensitive adhesive layer 6 containing a colorant 17 are provided in this order.

Next, an embodiment of the present invention will be explained according to the manufacturing process of an ink ribbon for dry transfer material manufacturing shown in FIG.

First, the adhesive is finely dispersed and emulsified. In the fine dispersion and emulsification process of the adhesive, the one-component cyanoacrylate instant adhesive 3 is atomized by a mechanical method such as stirring, thereby creating a one-component cyanoacrylate instant adhesive 3 containing the one-component cyanoacrylate instant adhesive 3. This is a step of preparing the constituent fine dispersion liquid or emulsion liquid. Here, a dispersant or an emulsifier was used in order to efficiently finely disperse or emulsify and maintain the resulting finely dispersed liquid and emulsified liquid stably.

Next, a microcapsule wall material, melamine-formaldehyde resin, which has the property of destroying the fine dispersion liquid or emulsion liquid prepared in the fine dispersion and emulsification process of the adhesive at a specific external pressure value or more, is added. A microencapsulation step is carried out in which the microcapsules 4 are produced by encapsulating the microcapsules.

Next, the microcapsules 4 produced in the microencapsulation step and the colorant 5 are finely dispersed or emulsified using a dispersant or an emulsifier, and then a wax-based binder is added to form microcapsules. Microcapsules are finely dispersed and emulsified to prepare a liquid.

Furthermore, the microcapsule liquid prepared in the microdispersion and emulsification process of the microcapsules is applied using a known coating method.
For example, the polyethylene terephthalate of the film-like ribbon base material 1 can be coated using a bar coating method, a blade coating method, an air knife coating method, a gravure coating method, a roll coating coating method, a spray coating method, or a dip coating method. - Apply on top.

[0040] Immediately after coating in the microcapsule liquid coating step, heat drying is performed in an atmosphere of 110°C. Through this drying process of the microcapsule coating layer, the pressure-sensitive retransfer adjustment layer 2 is formed.

Next, the colorant 17 and the heat-sensitive adhesive composition are atomized by a mechanical method such as stirring.
and a fine dispersion and emulsification process of the heat-sensitive adhesive composition to prepare a fine dispersion or emulsion containing the heat-sensitive adhesive composition. Here, too, a dispersant or emulsifier was used in order to efficiently finely disperse and emulsify, and to maintain stability of the resulting finely dispersed liquid and emulsified liquid.

The fine dispersion or emulsion prepared in the fine dispersion or emulsification process of the heat-sensitive adhesive composition is applied by a known coating method such as a bar coating method, a blade coating method, an air knife coating method, a gravure coating method, It is applied onto the pressure-sensitive retransfer adjustment layer 2 by a roll coating method, a spray coating method, a dip coating method, or the like.

[0043] Then, by drying the heat-sensitive adhesive layer,
Polyethylene terephthalate of the film-like ribbon substrate 1 coated with colorant 17 and heat-sensitive adhesive composition 110
By heating and drying in an atmosphere of .degree. C., the heat-sensitive adhesive layer 6 is formed, and at the same time, the final ink ribbon for producing a dry transfer material is formed.

Although it is common to use the same material for the coloring agent 5 and the coloring agent 17, it is also possible to use materials with different structures to express the same hue or to express an intermediate color. It is also possible to do so, and there is nothing wrong with that.

On the other hand, FIG. 3 is an enlarged cross-sectional view of a dry transfer material produced using the ink ribbon for producing a dry transfer material of the present invention. The dry transfer material 9 includes microcapsules 4 containing a heat-sensitive adhesive layer 6 and an adhesive 3 on a retransfer sheet 8.
It is produced by sequentially laminating pressure-sensitive retransfer adjustment layers 2 containing the following.

Next, the procedure for producing the dry transfer material 9 will be briefly explained.

First, the ink ribbon for producing a dry transfer material according to this embodiment is housed in a cartridge to produce a ribbon cartridge. Then, the ribbon cartridge was transferred to a dry transfer material manufacturing device (manufactured by Brother Industries, Ltd., tape writer).
P-touch) and bring it into close contact with the thermal head built into the dry transfer material manufacturing device.

Next, by inputting data, only the heating elements corresponding to the characters, figures, etc. to be recorded are transferred to the pressure-sensitive retransfer adjustment layer 2 out of the many heating elements of the thermal head 7.
and heat is generated to a temperature higher than the thermal melting temperature of the heat-sensitive adhesive layer 6. As a result, the desired ink transfer image is thermally transferred onto the retransfer sheet 8, and the dry transfer material 9 having the desired ink transfer image is transferred onto the retransfer sheet 8.
can be created.

After the surface of the retransfer sheet 8 on which the ink transfer image is formed is closely fixed to the object to be transferred, the retransfer sheet 8 is
A pressure corresponding to the stamp pressure is applied from the surface opposite to the surface on which the ink transfer image of step 8 is formed to destroy the microcapsules 4 and cause the contained adhesive 3 to flow out, thereby achieving the desired ink transfer. As a result of pressure-sensitive re-transfer of the image onto a transfer material such as paper, plastic, metal, wood, etc., a pressure-sensitive re-transfer image of good quality without crushing, spreading, brittleness, etc. could be obtained.

[0050] The magnitude of the stamp pressure corresponds to the pressure value required to destroy the microcapsules 4, and is 10 g.
/cm2 to 2000g/cm2, but preferably 70g/cm2 in order to easily obtain a good pressure-sensitive retransfer image.
It is particularly desirable that the thickness is from m2 to 1000 g/cm2. In other words, if the stamp pressure is less than 10 g/cm2, the microcapsules 4 will be difficult to break, resulting in poor pressure-sensitive retransferability. On the other hand, if the stamp pressure is 2000 g/cm2 or more, this is a pressure value that cannot be obtained with a stamp, so the above range is particularly desirable.

Furthermore, in this embodiment, the adhesive 3 flows out instantaneously, hardens in a very short time, and has adhesive strength at the same time, making it possible to obtain a pressure-sensitive retransfer image in a very short time.

Moreover, by making the pressure-sensitive retransfer adjustment layer 2 contain the colorant 5 and the heat-sensitive adhesive layer 6 contain the colorant 17, the pressure-sensitive retransfer adjustment layer 2 and the heat-sensitive adhesive layer 6
Since the cohesive force of the ink transfer image composed of the following has been greatly improved, it has become possible to pressure-sensitively retransfer the ink transfer image onto the desired transfer object in a perfect form with no blurring or the like.

The scratch strength was measured using the pressure-sensitive retransfer image obtained as described above and the pressure-sensitive retransfer image of the conventional example as a comparative example, and the results of comparing the scratch resistance are shown in FIG. Indicated. Note that Sample 1 is based on a pressure-sensitive retransfer image obtained using a dry transfer material produced from the ink ribbon for dry transfer material production of Example 1.

As a result of comparison with the pressure-sensitive retransfer image of the conventional example, it was found that the pressure-sensitive retransfer image obtained using the dry transfer material produced from the ink ribbon for producing the dry transfer material of Example 1 was The adhesion to the surface has been significantly improved, and the integrity of the pressure-sensitive retransfer image has also been significantly improved.As a result, the pressure-sensitive retransfer image has become stronger, resulting in improved scratch resistance and other abrasion resistance. It can be seen that there has been a significant increase and improvement.

Further, FIG. 6 shows the results of observation and comparison of weather resistance between the dry transfer material produced from the ink ribbon for dry transfer material production of Example 1 and the conventional dry transfer material. 2 shows the results of observing and comparing the weather resistance of the pressure-sensitive retransfer image of Example 1 produced from the dry transfer material and the pressure-sensitive retransfer image of the conventional example.

[0056] As a method of observation and comparison, 60°C8
The samples were visually observed while being continuously left in a 5% RH atmosphere, and the number of samples in which occurrence of cracks, bleeding, etc., and changes in hue, etc., were confirmed was determined for 100 test samples.

As a result of comparison with the conventional example, it was found that the dry transfer material and pressure-sensitive retransfer image obtained from Example 1 were 480 to 720
Even after the passage of time, no cracks, bleeding, etc., or changes in hue were observed, indicating that the material has excellent weather resistance, similar to the conventional dry transfer material and pressure-sensitive retransfer image.

Furthermore, with good weather resistance for 720 hours, both Example 1 and the conventional example have weather resistance sufficient for practical use.For comparison, Example 1 and the conventional example are We continued to observe and compare the weather resistance of the samples. As a result, Example 1 had a two-layer structure, and the integrity of the pressure-sensitive retransferred image was improved, so that better weather resistance was obtained compared to the conventional example.

(Example 2) Heat-sensitive adhesive layer 6 in FIG.
The heat-sensitive adhesive layer 10 except for the colorant 17 which is a constituent component of
An ink ribbon for producing a dry transfer material was produced in the same manner as in Example 1, except for the following configuration.

FIG. 4 is an enlarged cross-sectional view of the ink ribbon for producing a dry transfer material according to the second embodiment. Then, in the same manner as in Example 1, a dry transfer material was produced from the ink ribbon for dry transfer material production, and a pressure-sensitive retransfer test was conducted. Since the capsule 4 was destroyed, the adhesive 3 flowed out, and was cured instantly, it was possible to obtain a pressure-sensitive retransfer image of good quality without crushing, spreading, brittleness, etc.

Further, as in Example 1, since the adhesive 3 was used which cured in a very short time and had adhesive strength at the same time, it became possible to obtain a pressure-sensitive retransfer image in a very short time.

Using the pressure-sensitive retransfer image obtained as described above and the pressure-sensitive retransfer image of the conventional example as a comparative example, the scratch strength was measured in the same manner as in Example 1, and the scratch resistance was determined. Figure 5 shows the results of the comparison.

Sample 2 is based on a pressure-sensitive retransfer image obtained using a dry transfer material produced from the ink ribbon for producing dry transfer materials of Example 2.

As a result of comparison with the pressure-sensitive retransfer image of the conventional example, it was found that the pressure-sensitive retransfer image obtained using the dry transfer material produced from the ink ribbon for producing the dry transfer material of Example 2 was It can be seen that the pressure-sensitive re-transferred image became stronger due to the significantly improved adhesion with the material, and the abrasion resistance such as scratch strength was significantly increased and improved.

Furthermore, FIGS. 6 and 7 show the dry transfer material and pressure-sensitive retransfer image produced from the ink ribbon for producing the dry transfer material of Example 2 in the same manner as in Example 1, and the conventional example. The results of observation and comparison of weather resistance are shown.

Since the pressure-sensitive retransfer adjustment layer of Example 2 contained microcapsules 4 containing the adhesive 3, the dry transfer material and pressure-sensitive retransfer image obtained from Example 2 had the following properties: Similar to Example 1, even after 480 to 720 hours, no cracks, no bleeding, no changes in hue, etc. were observed, indicating excellent weather resistance.

[0067]

Effects of the Invention As described above, according to the present invention, a pressure-sensitive retransfer adjustment device comprising a heat-sensitive adhesive layer and microcapsules containing an adhesive on a film-like ribbon base material. By adopting a two-layer structure, the ink transfer image printed using the thermal transfer method can be instantly applied pressure from the side of the retransfer sheet opposite to the side on which the ink transfer image was formed. In addition to the desired paper, plastic, metal,
Even when pressure-sensitive retransfer is performed on a material to be transferred such as wood, there is no residual ink on the re-transfer sheet, and furthermore, the pressure-sensitive retransferred printed image does not collapse, fade, spread, or become brittle. Without,
Therefore, it is possible to obtain a good image that is firmly pressure-sensitively adhered to the transferred object.

Furthermore, by instantaneously applying only the pressure equivalent to the stamp pressure from the back side of the retransfer sheet, pressure-sensitive retransfer can be completed in an extremely short time.

[0069] The integrity of the pressure-sensitive retransfer image and the adhesion to the transferred object have been greatly improved, making the pressure-sensitive retransfer image stronger and improving the scratch resistance of the pressure-sensitive retransfer image. It is possible to significantly improve surface properties such as

Furthermore, since the above-described effects can be obtained with a two-layer structure of the ink ribbon for producing a dry transfer material, the actual manufacturing cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional view of an ink ribbon for producing a dry transfer material according to the present invention.

FIG. 2 is a block diagram showing a manufacturing process of an ink ribbon for manufacturing a dry transfer material.

FIG. 3 is an enlarged cross-sectional view of a dry transfer material produced using the ink ribbon for producing a dry transfer material of the present invention.

FIG. 4 is an enlarged cross-sectional view of an ink ribbon for producing a dry transfer material according to a second embodiment.

FIG. 5 is a diagram showing the results of measuring the scratch strength and comparing the scratch resistance using the obtained pressure-sensitive retransfer image and a conventional pressure-sensitive retransfer image as a comparative example.

FIG. 6 is a diagram showing the results of observation and comparison of the weather resistance of a dry transfer material produced from the ink ribbon for producing a dry transfer material of the present invention and a conventional dry transfer material.

FIG. 7 is a diagram showing the results of observation and comparison of the weather resistance of a pressure-sensitive retransfer image of the present invention produced from a dry transfer material and a pressure-sensitive retransfer image of a conventional example.

[Explanation of symbols]

1 Film-like ribbon base material 2 Pressure-sensitive retransfer adjustment layer 3. Adhesive 4. Microcapsules 5 Coloring agent 6 Heat-sensitive adhesive layer 7 Thermal head 8 Retransfer sheet 9 Dry transfer material 10 Heat-sensitive adhesive layer 17 Coloring agent

Claims (1)

[Claims] 1. An ink for producing a dry transfer material, which allows an ink transfer image such as characters or figures obtained using a thermal transfer method to be pressure-sensitively retransferred onto a desired transfer object using external pressure. An ink for manufacturing a dry transfer material, in which a pressure-sensitive retransfer adjustment layer comprising a heat-sensitive adhesive layer and microcapsules containing an adhesive is provided on a film-like ribbon base material in the ribbon. ribbon.