JP2926791B2 - Ink ribbon for dry transfer material production - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a thermal transfer ink ribbon used in the production of a dry transfer material, and particularly to a thermal transfer type printer, a typewriter, a word processor, or the like, which has poor wettability. In addition to being capable of transferring and printing to a surface having strong peelability, a transfer image obtained by thermal transfer can be effectively pressure-retransferred onto an object to be transferred by pressure. The present invention relates to an ink ribbon for producing a dry transfer material.

(Prior art and its problems) In recent years, printers, typewriters,
2. Description of the Related Art Printing devices such as word processors have been developed and are being widely used from small personal use to business use. In the printing by the thermal transfer method, the thermal transfer ink ribbon is brought into close contact with a predetermined printing paper by a thermal head, and a required heating element among a large number of heating elements of the thermal head is heated to support the thermal transfer ribbon. This is performed by melting a heat-meltable ink portion that is in contact with the heating element via the body and transferring the melted ink portion to printing paper.

By the way, this type of thermal transfer ribbon has hitherto simply been formed by applying a hot-melt ink composed of a colorant and a binder on a predetermined support, and such a binder is mainly composed of wax. Was to do. In addition, this type of thermal transfer ribbon is intended only for ordinary paper as an object to be transferred.

Therefore, the present inventors have previously described a thermal transfer ink ribbon intended to enable transfer and printing on a surface having poor wettability and good releasability and releasability. −
No. 275538, Japanese Patent Application No. 61-275539, and Japanese Patent Application No. 62-85350
And Japanese Patent Application No. 62-80126 discloses an ink ribbon aiming at improving the thermal sensitivity.

In conventional thermal transfer devices, the ribbon is wound up by the frictional force between the ink surface of the ribbon and the paper to be transferred, and the ribbon is pulled out according to the movement of the head. It is done by winding.

However, poor wettability, good releasability and good releasability mean that the coefficient of friction is small, so the force for pulling out the ribbon is weak, and therefore the force required to pull out the ribbon from the cassette is large. In other words, the ribbon is not completely fed, and a state (slip) occurs in which the head is printing the same portion of the ribbon, and printing cannot be performed. In order to prevent this, if the force required to pull out the ribbon from the cassette is reduced, the running of the ribbon becomes unstable, and the meandering of the ribbon is caused. Furthermore, the ribbon pulling output is significantly different between immediately after ink application and after several days have elapsed, and when stored at 55 ° C., it differs again.
It is very difficult to achieve meandering and slip-free ribbon running, taking into account aging.

The present inventors have previously described thermal transfer ink ribbons for the purpose of simultaneously solving such problems of storage stability and ribbon running property, as disclosed in Japanese Patent Application Nos. 62-255761 and 62-2557.
62, Japanese Patent Application Nos. 62-262348 and 62-297155.

Furthermore, since the conventional thermal transfer ribbon usually uses white paper as an object to be transferred, the requirement for hiding power for ink is not so large, and there is no requirement for a white ribbon or the like at all. In the case of the ink of the ink ribbon for producing a material, a large concealing power is required because various materials and various colors can be used as the transfer object. However, for most colors other than black,
Since the hiding power of the colorant is not so large, there is a problem that the retransferred characters / graphics have no hiding power and the base is transparent, making it difficult to confirm the characters / graphics. . However, there has been no report to solve such a problem.

(Object of the Invention) The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to provide a thermal transfer ink ribbon for producing a dry transfer material. .

Further, a second object of the present invention is to provide an ink ribbon for producing a dry transfer material having improved thermal transfer property to a surface having poor wettability. Dry transfer material production that can easily and completely transfer the ink image (transferred image) transferred onto the base sheet to the target transfer object by pressure from behind the base sheet. An object of the present invention is to provide an ink ribbon.

Further, a fourth object of the present invention is to provide an ink ribbon for producing a dry transfer material having good storage stability,
Further, a fifth object of the present invention is to provide an ink ribbon for producing a dry transfer material having a good ribbon running property.

A sixth object of the present invention is to provide a dry transfer method in which a retransferred character / graphic has sufficient hiding power even when a colorant having a small hiding power is used, and the character / graphic can be easily confirmed. An object of the present invention is to provide an ink ribbon for manufacturing a material.

(Solution) In order to achieve this object, an ink ribbon for producing a dry transfer material of the present invention is configured to have the following features. That is, in order to manufacture a desired dry transfer material, in an ink ribbon used to form a transfer image of a required character or figure by a thermal transfer method, a white surface of a predetermined film-shaped ribbon base material is used. An ink including a pigment, a binder, and a pressure-sensitive adhesive, and an ink including a colorant, a binder, and a pressure-sensitive adhesive on the incident light-reflective layer. A layer is formed, and a heat-sensitive adhesive resin, a tackifying resin and a colorant are formed on the ink layer. The ink layer has a higher viscosity than the ink layer, and has a heat-sensitive adhesive property, hardness and cohesion. Thus, a transferability adjusting layer having a large force was formed.

(Specific Structure / Function) The thermal transfer ink ribbon according to the present invention having the above structure is incident on one surface of a film-shaped ribbon substrate (support) 11 as shown in FIG. 1, for example. Light reflection layer
12, the ink layer 13 is formed thereon, and the transferability adjusting layer 14 is further formed thereon with a predetermined thickness. It should be noted that a sticking prevention layer 15 made of a heat-resistant resin such as a silicone resin is provided on the surface of the ribbon substrate 11 opposite to the surface on which the ink layer 13 is coated.

In such a thermal transfer ink ribbon 10 for producing a dry transfer material, the film-shaped ribbon substrate 11 supporting the incident light reflection layer 12 may be any of the various types of substrates conventionally used as the substrate of the thermal transfer ink ribbon. Any of the above can be used. In particular, since a thermal head (printing device) can be brought into contact with the ink ribbon for thermal transfer, polyester, polyimide, polycarbonate having a heat resistance temperature of 150 ° C. or higher is used. , A resin film made of polysulfone, polyethersulfone, polyphenylene sulfide, or the like, or a paper such as a capacitor paper or a glassine paper is used as a suitable material, and the thickness thereof is appropriately determined depending on the type of the material. However, it is generally desirable to use one having a thickness in the range of 3 to 20 μm.

The incident light reflecting layer 12 as an undercoat layer formed below the ink layer 13 is mainly configured to include a white pigment, a binder, and a pressure-sensitive adhesive. For this reason, the characters and images re-transferred pressure-sensitive to paper or the like are reflected by the incident light reflection layer 12 without the light reaching the underlying paper. Therefore, since the color of the base is transparent and difficult to see, even if a pigment having a small hiding power is used for the ink layer 13, a sufficient hiding power can be obtained.

As the white pigment, titanium oxide, zinc white, lithopone and the like are mainly used.

The binder agent that forms the incident light reflection layer 12 is mainly a plant-based wax such as candelilla wax, carnauba wax, rice wax, and wax.
Animal waxes such as beeswax, lanolin and whale wax; mineral waxes such as montan wax and ceresin; waxes composed of one or more petroleum waxes such as paraffin wax and microcrystalline wax; petroleum resins and rosin What consists of a tackifier such as resin, ketone resin, polyamide resin and phenol resin is used. The above waxes include α
Resin-based waxes such as olefin-maleic anhydride copolymers can also be used, and the tackifier may be used to improve ink adhesion, hardness, cohesion, adhesion and pressure-sensitive adhesives. It serves to provide adhesion. In addition, the wax and the tackifier constituting the binder agent are generally
They will be blended at a ratio of about 1: 0 to 3: 2 on a weight basis.

Further, as the pressure-sensitive adhesive constituting the incident light reflecting layer 12, polyvinyl chloride, polyacrylate, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, polyvinyl acetate, polyvinyl ether, polyvinyl Vinyl polymers such as acetal and polyisobutylene; fibrous polymers such as ethyl cellulose, nitrocellulose and cellulose acetate; and one or more rubber polymers such as chloride rubber and natural rubber are used in combination.

The white pigment, the binder agent, and the pressure-sensitive adhesive constituting the incident light reflection layer 12 are generally 5 to 50:30 to 93: 0 to 2
It is blended in a ratio of about 0, preferably 95 ° C
At temperatures below 3000 centipoise, especially 50-10
The composition will give a viscosity of about 00 centipoise. Further, such a composition is dissolved or dispersed in an appropriate solvent to form a coating liquid, or coated or heated on a target film-shaped ribbon substrate 11 by heating and mixing according to a known method. It will be melt coated.

Further, the ink layer 13 is mainly composed of a colorant, a binder, and a pressure-sensitive adhesive.

As the colorant, a pigment such as carbon black is mainly used, and an appropriate dye may be added as needed for color tone adjustment.

As the binder agent, similarly to the incident light reflection layer 12, mainly plant-based waxes such as candelilla wax, carnauba wax, rice wax, and wood wax; animal waxes such as beeswax, lanolin, and whale wax; montan wax Mineral waxes such as glycerol, ceresin, etc .; waxes composed of one or more petroleum waxes such as paraffin wax and microcrystalline wax, and adhesives such as petroleum resin, rosin resin, ketone resin, polyamide resin, phenol resin, etc. What consists of an agent is used. The above waxes include α
Resin-based waxes such as olefin-maleic anhydride copolymers can also be used, and the tackifier may be used to improve ink adhesion, hardness, cohesion, adhesion and pressure-sensitive adhesives. It serves to provide adhesion. In addition, the wax and the tackifier constituting the binder agent are generally
It will be blended at a ratio of about 15: 1 to 3: 2 on a weight basis.

Further, similarly to the incident light reflection layer 12, the pressure-sensitive adhesive of the ink layer 13 is formed of polyvinyl chloride, polyacrylate, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, polyvinyl acetate, polyvinyl acetate. ether,
Vinyl polymers such as polyvinyl acetal and polyisobutylene: Fiber polymers such as ethyl cellulose, nitrocellulose and cellulose acetate; and one or more rubber polymers such as chlorinated rubber and natural rubber are used in combination. .

The colorant, binder and pressure-sensitive adhesive constituting the ink layer 13 are generally mixed at a ratio of about 5 to 50:30 to 93: 2 to 20 and preferably at a temperature of 95 ° C. , A composition having a viscosity of less than 3000 centipoise, especially about 200 to 1000 centipoise. Such a composition may be dissolved or dispersed in an appropriate solvent to form a coating liquid, or may be coated or hot-melted by heating and mixing according to a known method that does not attack the incident light reflecting layer 12. It will be coated.

On the other hand, the transferability adjusting layer 14 as a top coat layer formed on the ink layer 13 has a higher viscosity (under thermal transfer conditions) and a higher heat-sensitive adhesiveness, hardness and cohesive force than the ink layer 13. Since it is configured as a large layer, such a transferability adjusting layer 14 is used during thermal transfer.
Its adhesive strength enhances thermal transferability to surfaces with poor wettability, and its cohesive strength, viscosity and hardness are increased, so that poor transfer such as crushing and spreading is effective. In addition, it has a function of favorably preventing the ink from being raked by the head of the printing apparatus. At the time of pressure-sensitive transfer, in which pressure is applied from behind the basic sheet of the dry transfer material to transfer the ink image (transferred image) created by the dry transfer onto the material to be transferred,
Since the transferability adjusting layer 14 has an increased cohesive force and hardness, it is possible to transfer a predetermined ink image integrally from the basic sheet without residual ink, and to transfer the transferred ink image. This makes it possible to obtain a beautiful image without collapse, and at the same time protects the transferred image to make it stronger.

Incidentally, the transferability adjusting layer 14 as described above has a large film-forming property and a large heat-sensitive adhesive, such as an ethylene-vinyl acetate copolymer, polyvinyl acetate, an ionomer, an acrylic polymer, and an ethylene-ethyl acrylate. Large cohesive force with one or more of polymer, ethylene-acrylic acid copolymer, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyvinyl pyrrolidone, polyvinyl alcohol, polyamide, ethyl cellulose, polyolefin, etc. It mainly comprises a donating resin, for example, one kind or a mixture of two or more kinds of petroleum resin, rosin, hydrogenated rosin, rosin ester, ketone resin, phenol resin and the like. And, such a heat-sensitive adhesive resin and a tackifying resin are generally
5 to 10: 5 to 10 parts by weight.

Incidentally, the heat-sensitive adhesive resin having a large film-forming property constituting the transferability adjusting layer 14 is incompatible with the ink layer 13,
It is difficult to mix even if they are compatible with each other, and forms a large heat-sensitive adhesive film on the ink layer 13. The tackifying resin is composed of the above-mentioned resin having a large film forming property and the ink layer 13. To improve cohesion, hardness and tackiness,
It is added to adjust the thermal transferability.

And a heat-sensitive adhesive resin having a large film-forming property,
The composition comprising the tackifying resin and the coloring agent may be in the form of an aqueous solution or an aqueous dispersion, or the ink layer 13.
In the form of a solution or dispersion of a general-purpose organic solvent that does not invade the ink layer 13, it is applied on the ink layer 13 with a predetermined thickness according to a normal application technique. The transferability adjusting layer 14 has a higher viscosity than the ink layer 13 under thermal transfer conditions, and generally has a viscosity of 95%.
3000 centipoise or more at a temperature of ° C., preferably
It is a layer having a viscosity of 10,000 centipoise or more.

In order to further enhance the hiding power, a pigment or a dye can be added to the transferability adjusting layer.

Further, the transferability adjusting layer 14 thus formed is further adjusted in film strength to obtain a sharp printed image with sharpness, and to prevent contamination and blocking, kaolin and talc are used. , Bentonite, fillers such as titanium oxide, and organic or inorganic powders such as metal soaps such as zinc stearate and aluminum stearate.
It is also possible to mix them in a ratio not exceeding the weight% and to make them exist in the transferability adjusting layer 13. Furthermore, the transferability adjusting layer 14 has good ribbon running properties without ribbon meandering and slipping, and also has good storage properties without blocking and winding disturbance even when stored at a temperature of 55 ° C. In addition, silicone resin, silicone oil,
10% by weight of one or more of silicone fine powder
It is also possible to mix them in a proportion not exceeding the above and to make them exist in the transferability adjusting layer 14.

Then, using the ink ribbon 10 obtained in this manner, the ink ribbon 10 is formed into a head heating element shape, a head heating element position,
By setting the head mounting angle, head holding pressure, winding torque, head applied energy, printing speed, etc. in a printing device such as a thermal transfer printer, and performing printing and thermal transfer, the desired dry transfer material is advantageous. It will be manufactured in.

That is, by using such an ink ribbon 10, a film having a surface with poor wettability (basic sheet)
Even if a thermal image is printed on a transferred image of a desired character or figure,
Spreading, crushing, shading, head scraping, stringing,
A good printed image can be realized without causing any problems such as citron skin and insufficient transfer.

Further, even if the image printed in this manner is pressure-transferred onto a target material such as paper, plastics, metal, or the like by applying pressure from the back side of the film (basic sheet), the film is not affected. There is no residual ink on the top, and the transferred image can also be formed as a good image with no crushing, spreading, brittleness, and strong adhesion, with a large hiding power.

Also, even when such an ink ribbon 10 is stored at 55 ° C. for 24 hours, blocking,
There is no problem such as turbulence at all, and there is no problem such as ribbon meandering and slipping in the ribbon running property, and printing and thermal transfer can be performed to the end of the ribbon.

(Examples) Hereinafter, some examples of the present invention will be shown to clarify the present invention more specifically. However, the present invention is not limited by such description. That goes without saying.

In addition, in addition to the following examples, the present invention, in addition to the above-described specific description, various changes, corrections, and modifications based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It should be understood that improvements can be made.

Example 1 In order to form an incident light reflecting layer (12), an ink layer (13), and a transferability adjusting layer (14), a coating liquid for forming an incident light reflecting layer having the following composition, ink, and transferability adjustment. The coating liquids for forming the layers were respectively adjusted. The viscosity of the incident light reflecting layer (12) formed by such a coating liquid is 300 centipoise (95 ° C.), and the viscosity of the ink layer (13) formed by this ink is 730 centipoise (95 ° C.). In addition, the viscosity of the transferability adjusting layer (14) formed with such a coating solution was about 100,000 centipoise (95 ° C.). Incident light reflection layer (12) Composition by weight α-olefin-maleic anhydride 2 copolymer [Diacarna 30 manufactured by Mitsubishi Kasei Kogyo Co., Ltd.] Candelilla wax 3 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] ] Microcrystalline wax 9 [Hi-Mic1045 manufactured by Nippon Seiro Co., Ltd.] Rosin ester 2 [Superester A-100 manufactured by Arakawa Chemical Industry Co., Ltd.] Ethylene-vinyl acetate copolymer 2 [Mitsui DuPont Polychemical ( EVA210 manufactured by KK) Titanium oxide 15 [Taipek R-820 manufactured by Ishihara Sangyo Co., Ltd.] Methyl isobutyl ketone (solvent) 100 ink layer (13) Composition by weight α-olefin-maleic anhydride 8 copolymer [Mitsubishi Diacarna 30 manufactured by Kasei Kogyo Co., Ltd.] Candelilla wax 5 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] Rosin ester 2 [Arakawa Chemical Industries Super Ester A-100 manufactured by Co., Ltd.] Ethylene-vinyl acetate copolymer 3 [EVA210 manufactured by Mitsui Dupont Polychemicals Co., Ltd.] Azo-based organic pigment 12 [CROMOPHTAL Yellow 3G manufactured by Ciba Geigy Co., Ltd.] Methyl isobutyl ketone (Solvent) 100 Transferability adjusting layer (14) Composition parts by weight ionomer 12 [Chemipearl SA-100 manufactured by Mitsui Petrochemical Industry Co., Ltd.] Hydrogenated rosin 9 [SE-50 manufactured by Arakawa Chemical Industry Co., Ltd.] Silicone oil 1 [KP-316 manufactured by Shin-Etsu Chemical Co., Ltd.] Water (solvent) 78 Then, a 3.5 μm polyethylene terephthalate (PET) film was used as the ribbon substrate (11), and the incident light having the above composition was formed on the film. The coating liquid for forming the reflective layer is applied so as to have a dry film thickness of 1 to 2 μm, and dried to form the incident light reflective layer (12). ~ 6 μm The ink is coated and dried to form an ink layer (13), and a coating liquid for forming a transferability adjusting layer having the above composition is further dried thereon so as to have a dry film thickness of 1 to 2 μm. The desired ink ribbon (10) was obtained by coating and drying at 90 ° C.

Next, using the ink ribbon thus obtained, it was set in a regulated thermal transfer type printing device (P-touch manufactured by Brother Industries, Ltd.), and a polyethylene film coated with a silicone resin (thickness: 100 μm) at a temperature of 10 ° C. to 35 ° C., a sufficiently beautiful and good quality printed image can be obtained. Such a printed polyethylene film is rubbed from the back side to reduce the pressure. By adding such a printed image to a desired surface of paper, plastics or metal by pressure-sensitive re-transfer, an image having a sufficiently high concealing power could be completed.

Further, the storage stability of the ink ribbon kept at 55 ° C. for 24 hours using the ink ribbon was observed, and a ribbon running test was performed by adding the ink ribbon immediately after coating.

As a result, good results were obtained with respect to storability without blocking and turbulence, and good results were also obtained with respect to ribbon running properties without meandering and slipping.

Example 2 Composition of incident light reflecting layer (12) and ink layer (13) as described below
Composition and transfer property adjusting layer (14) Ink giving composition and 2
An ink ribbon (10) was prepared in the same manner as in Example 1 by using various kinds of coating liquids, and thermal transfer, pressure-sensitive transfer, ribbon running,
A preservation experiment was performed. As a result, a beautiful and good quality print image can be obtained, and when such a print image is subjected to pressure-sensitive retransfer, it has a sufficient hiding power on a desired transfer object,
Good quality images could be obtained.

Also, the ribbon running property, storage property and dispersibility were good. The viscosity of the incident light reflecting layer (12) formed with the following coating liquid is 300 centipoise (95 ° C.), and the viscosity of the ink layer (13) formed with the ink having the following composition is as follows. 730 centipoise (95 ° C.), and the viscosity of the transferability adjusting layer (14) formed with the following coating solution was about 100,000 centipoise (95 ° C.). Incident light reflection layer (12) Composition by weight α-olefin-maleic anhydride 2 copolymer [Diacarna 30 manufactured by Mitsubishi Kasei Kogyo Co., Ltd.] Candelilla wax 3 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] ] Microcrystalline wax 9 [Hi-Mic1045 manufactured by Nippon Seiro Co., Ltd.] Rosin ester 2 [Superester A-100 manufactured by Arakawa Chemical Industry Co., Ltd.] Ethylene-vinyl acetate copolymer 2 [Mitsui DuPont Polychemical ( EVA210 manufactured by KK) Titanium oxide 10 [Taipec R-580 manufactured by Ishihara Sangyo Co., Ltd.] Methyl isobutyl ketone (solvent) 100 ink layer (13) Composition by weight α-olefin-maleic anhydride 8 copolymer [Mitsubishi Diacarna 30 manufactured by Kasei Kogyo Co., Ltd.] Candelilla wax 5 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] Rosin ester 2 [Arakawa Chemical Industries Super Ester A-100 manufactured by Co., Ltd.] Ethylene-vinyl acetate copolymer 3 [EVA210 manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.] Organic pigment 12 [IRGALITE Orange P manufactured by Ciba Geigy Co., Ltd.] Methyl isobutyl ketone (solvent 100) Transferability adjusting layer (14) Composition by weight Polyamide 12 [Sunmide 615A manufactured by Sanwa Chemical Industry Co., Ltd.] Rosin ester 9 [Superester A-115 manufactured by Arakawa Chemical Industry Co., Ltd.] Silicone fine powder 2 [ Tospearl 130 manufactured by Toshiba Silicone Co., Ltd.] Isopropyl alcohol (solvent) 68 Example 3 Inks and 2 that provide the following composition of the incident reflection layer (12), ink layer (13) and transferability adjusting layer (14) An ink ribbon (10) was prepared in the same manner as in Example 1 using various kinds of coating liquids, and experiments on thermal transfer, pressure-sensitive transfer, ribbon running, and storage were performed. As a result, good results were obtained as in Example 1. The viscosity of the incident light reflecting layer (12) formed with the following coating liquid is 300 centipoise (95 ° C.), and the viscosity of the ink layer (13) formed with the ink having the following composition is as follows. 730 centipoise (95 ° C.), and the viscosity of the transferability adjusting layer (14) formed with the following coating solution was about 100,000 centipoise (95 ° C.). Incident light reflection layer (12) Composition by weight α-olefin-maleic anhydride 2 copolymer [Diacarna 30 manufactured by Mitsubishi Kasei Kogyo Co., Ltd.] Candelilla wax 3 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] ] Microcrystalline wax 9 [Hi-Mic1045 manufactured by Nippon Seiro Co., Ltd.] Rosin ester 2 [Superester A-100 manufactured by Arakawa Chemical Industry Co., Ltd.] Ethylene-vinyl acetate copolymer 2 [Mitsui DuPont Polychemical ( EVA210 manufactured by Itohara Co., Ltd.] Titanium oxide 10 [Taipec A-100 manufactured by Ishihara Sangyo Co., Ltd.] Methyl isobutyl ketone (solvent) 100 ink layer (13) composition part by weight α-olefin-maleic anhydride 8 copolymer [Mitsubishi Diacarna 30 manufactured by Kasei Kogyo Co., Ltd.] Candelilla wax 5 [Candelilla wax 2698 manufactured by Chukyo Yushi Co., Ltd.] Rosin ester 2 [Arakawa Chemical Industries Super Ester A-100 manufactured by Co., Ltd.] Ethylene-vinyl acetate copolymer 3 [EVA210 manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.] Organic pigment 12 [IRGALITE Yellow CG manufactured by Ciba Geigy Co., Ltd.] Methyl isobutyl ketone (solvent 100) Transferability adjusting layer (14) Composition weight part ethylcellulose 20 [Reagent, 10CPS manufactured by Kanto Chemical Co., Ltd.] Ketone resin 25 [Ketone resin K-90 manufactured by Arakawa Chemical Industry Co., Ltd.] Silicone fine powder 1 [Toray Silicone] Trefil R-900 isopropyl alcohol (solvent) manufactured by Co., Ltd. 70 Comparative Examples 1-3 While using the ink of Example 1, the transferability adjusting layer (14)
Ink ribbon in which no ink was formed (Comparative Example 1), Example 2
While using the ink ribbon (Comparative Example 2) in which the transferability adjusting layer (14) was not formed and a commercially available wax-type thermal transfer ink ribbon (manufactured by Fuji Chemical Paper Industries, Ltd.) (Comparative Example 3). When a transfer test similar to that of Example 1 was carried out, both the heat-sensitive transfer property and the pressure-sensitive retransfer property were insufficient. Specifically, regarding thermal transferability, insufficient transferability due to insufficient adhesive force, spread of transfer print due to insufficient cohesive force, viscosity, and hardness, crushing, scraping of print by head, shading of print, citron skin, etc. The problem was found to occur. In addition, regarding pressure-sensitive retransferability, insufficient transfer due to insufficient pressure-sensitive adhesive force, insufficient fixing force, cohesive force and viscosity,
Furthermore, the final transfer print image is crushed and spread due to insufficient hardness,
There were problems such as insufficient strength, poor integral transfer, and residual ink on the film base sheet.

Comparative Examples 4 to 6 A printing test and a pressure-sensitive retransfer test were performed using the ink ribbons (Comparative Examples 4, 5, and 6) of Examples 1, 2, and 3 without the incident light reflecting layer. Due to insufficient force, the transferred print image became thin and it was difficult to confirm the image.

(Effects of the Invention) As is clear from the above description, according to the present invention, an ink layer is provided on a base material (support) of an ink ribbon, and an incident light containing a white pigment is used as an undercoat layer thereof. A light reflective layer is provided, and a heat transfer adhesive, hardness, viscosity, and cohesion transferability adjusting layer is provided as a top coat layer of the ink layer to form a triple structure, and the ink layer and incident light reflective layer are pressure sensitive. By providing adhesiveness, the pressure-sensitive transfer property to a surface with poor wettability is remarkably improved, and the pressure-sensitive re-transfer property to another substance by the pressure of the print image provided by thermal transfer is also advantageously improved. In addition, by providing such an incident light reflecting layer, it has become possible to advantageously produce a dry transfer material excellent in hiding power,
There is great industrial significance of the present invention.

[Brief description of the drawings]

The drawing is a cross-sectional explanatory view showing an example of a thermal transfer ink ribbon for producing a dry transfer material according to the present invention. 10 ... thermal transfer ink ribbon, 11 ... ribbon base material, 12 ...
... incident light reflection layer, 13 ... ink layer, 14 ... transferability adjusting layer, 15 ... sticking prevention layer.

Continuation of front page (56) References JP-A-1-186385 (JP, A) JP-A-1-10349 (JP, A) JP-A-1-97687 (JP, A) JP-A-63-122592 (JP) JP-A-1-97688 (JP, A) JP-A-3-23978 (JP, A) JP-A-63-87048 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB Name) B41M 5/38-5/40

Claims (1)

(57) [Claims] 1. A dry process in which a transfer image of a character, a figure, or the like is transferred onto one surface of a transfer sheet by a thermal transfer method, and then the transfer image is re-transferred to an arbitrary transfer object by applying pressure from the other surface of the transfer sheet. In an ink ribbon used when manufacturing a transfer material, an incident light reflecting layer formed on one surface of a predetermined film-shaped ribbon base material and containing a white pigment, a binder agent, and a pressure-sensitive adhesive; And an ink layer containing a coloring agent, a binder agent and a pressure-sensitive adhesive, and a heat-sensitive adhesive resin formed on the ink layer and containing a tackifying resin and having a higher viscosity than the ink layer. ,
An ink ribbon for producing a dry transfer material, characterized by having a transferability adjusting layer having high heat-sensitive adhesiveness, hardness and cohesion.