JP2006289972A - Heat transfer image receiving sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat transfer image receiving sheet which is good in a slidability of mutual heat transfer image receiving sheets when an image is formed and can sufficiently prevent a carrying trouble such as a double feeding or the like in a heat transfer printer especially under a low-temperature environment. <P>SOLUTION: For the heat transfer image receiving sheet wherein an accepting layer is formed at least on one side surface of a base material sheet, the accepting layer is formed by coating a coating liquid containing a binder resin, a releasing agent and a lubricant of 0.05-5 pts.mass to 100 pts.mass of the binder resin to be dried, and the lubricant is a main chain end- or main chain both ends-modified silicone oil wherein the lubricant is 50-500 mm<SP>2</SP>/s in viscosity at 25°C to feature the heat transfer image receiving sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a thermal transfer image receiving sheet having good slipperiness between thermal transfer image receiving sheets at the time of image formation, and capable of completely preventing conveyance trouble such as double feeding in a thermal transfer printer in a low temperature environment.

Conventionally, various thermal transfer methods are known. Among them, a sublimation dye is used as a recording material, and this is supported on a substrate sheet such as paper or plastic film to form a thermal transfer sheet, which can be dyed with a sublimation dye. There have been proposed methods for forming various full-color images on a thermal transfer image-receiving sheet, for example, a thermal transfer image-receiving sheet provided with a dye-receiving layer on the surface of paper or plastic film. Since this method uses a sublimation dye as a color material, the density gradation can be freely adjusted, and a full color image of an original can be expressed. In addition, the image formed with the dye is very clear and excellent in transparency, so it is excellent in intermediate color reproducibility and gradation reproducibility, and can form high-quality images comparable to silver salt photographs. Is possible.

As a thermal transfer image receiving sheet, in a thermal transfer printer that prints by attaching an image receiving sheet that has been cut to a predetermined size in advance, if the coefficient of friction between the receiving layer and the back surface layer (between the image receiving sheets) is high, This may cause problems such as double feeding. Further, such a conveyance trouble is a phenomenon that is likely to occur particularly in a low temperature environment. On the other hand, for example, Patent Document 1 discloses a thermal transfer image-receiving sheet in which a dye-receiving layer is provided on one surface of a base sheet and a slipping back layer is provided on the other surface. The main component of this is a thermal transfer image-receiving sheet characterized by the fact that it is composed of a fixing agent and a nylon filler. The surface of the slipping back layer of the image-receiving sheet has a fine uneven shape, and is supplied by a printer. It describes that the paper discharge characteristics are excellent and there is no dye back-off even when the stamp screen and the back surface are stored in an overlapping manner. However, the conventional thermal transfer image receiving sheet as described above has not yet been found to be able to completely solve transport troubles such as double feeding in a thermal transfer printer particularly in a low temperature environment.
Japanese Unexamined Patent Publication No. 07-101163

The present invention provides a thermal transfer image-receiving sheet that has the disadvantages of the prior art, that is, that the thermal transfer image-receiving sheets have good slidability during image formation, and that can completely prevent transport troubles such as double feeding in a thermal transfer printer in a low-temperature environment. It is intended to do.

The present invention provides, as claim 1, a thermal transfer image receiving sheet in which a receiving layer is formed on at least one surface of a base sheet, the receiving layer comprising a binder resin, a release agent, and 100 parts by mass of the binder resin. The coating liquid containing 0.05 to 5 parts by mass of a lubricant is applied and dried, and the lubricant has a viscosity at 25 ° C. of 50 to 500 mm ² / s. It is a silicone oil modified at one end of the main chain or at both ends of the main chain. According to a second aspect of the present invention, the releasing agent contains a side chain epoxy-modified silicone oil. As a third aspect, the receiving layer according to the first or second aspect further includes a curing agent.

The thermal transfer image-receiving sheet of the present invention has a structure in which a receiving layer is formed on at least one surface of a base sheet. The receiving layer comprises a binder resin (1), a release agent (2), and the binder resin ( 1) It is formed by applying a coating liquid containing a lubricant (3) which is 0.05 to 5 parts by mass with respect to 100 parts by mass, and drying the lubricant. It is a silicone oil modified at one end of the main chain or at both ends of the main chain with a viscosity at 25 ° C. of 50 to 500 mm ² / s. As described above, the main chain fragment terminal or main chain both terminal modified silicone oil having a predetermined range of viscosity is contained in a specified range with respect to the binder resin, so that it can be conveyed in a thermal transfer printer, particularly in a low temperature environment. In this case, a thermal transfer image receiving sheet having good transportability can be obtained.

One embodiment of the thermal transfer image receiving sheet of the present invention is shown in FIG. The illustrated thermal transfer image receiving sheet 1 has a configuration in which a receiving layer 3 is formed on one surface of a base sheet 2 and a back layer 4 is formed on the other surface of the base sheet 2. The thermal transfer image-receiving sheet of the present invention is not limited to those shown in the drawings, and an intermediate layer to which an antistatic layer, a cushion layer, a white pigment and a fluorescent whitening agent are added as necessary between the base sheet and the receiving layer. A layer such as an easy adhesion layer may be formed. Moreover, you may form layers, such as an antistatic layer, a writing layer, a back surface layer, on the surface on the opposite side to the receiving layer formation side of a base material sheet.

Next, each layer constituting the thermal transfer image receiving sheet obtained in the present invention will be described below.
(Substrate sheet)
It is desirable that the base sheet 2 has a role of holding the receiving layer and has mechanical characteristics that can withstand heat applied during image formation and that does not hinder handling.
The material of such a base sheet is not particularly limited. For example, polyester, polyarylate, polycarbonate, polyurethane, polyimide, polyetherimide, cellulose derivative, polyethylene, ethylene / vinyl acetate copolymer, polypropylene, polystyrene, acrylic, Polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl butyral, nylon, polyether ether ketone, polysulfone, polyether sulfone, tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer, polyvinyl fluoride, tetrafluoroethylene / ethylene copolymer Polymers, tetrafluoroethylene / hexafluoropropylene copolymer, polychlorotrifluoroethylene, polyvinylidene fluoride Stick film or sheet can be used is not particularly limited.

White film formed by adding a white pigment or filler to these plastic films or sheets, or sheets having microvoids inside the base sheet, as well as condenser paper, glassine paper, sulfuric acid paper, synthetic paper (Polyolefin-based, polystyrene-based), fine paper, art paper, coated paper, cast coated paper, synthetic resin or emulsion-impregnated paper, synthetic rubber latex-impregnated paper, synthetic resin-added paper, cellulose fiber paper, and the like can be used. Moreover, the laminated body by arbitrary combinations of said base material sheet can also be used. Representative examples include a laminate of cellulose fiber paper and synthetic paper, and cellulose fiber paper and a plastic film.

Moreover, the base material sheet which carried out the easy adhesion process on the surface and / or the back surface of said base material sheet can also be used. The thickness of these substrate sheets is usually about 3 to 300 μm. In the present invention, it is preferable to use a substrate sheet of 75 to 175 μm in consideration of mechanical suitability and the like.
Moreover, when the adhesiveness of a base material sheet and the layer provided on it is scarce, it is preferable to perform the easily bonding process and a corona discharge process on the surface.

(Receptive layer)
The receiving layer 3 in the present invention is a receiving layer containing at least one kind of thermoplastic resin on at least one surface of the base sheet, and is formed by receiving a sublimation dye transferred from the thermal transfer sheet. This is for maintaining a thermal transfer image. The binder resin (1) used in the receiving layer is a thermoplastic resin, for example, a halogenated polymer such as polyvinyl chloride or polyvinylidene chloride; polyvinyl acetate, ethylene / vinyl acetate copolymer, vinyl chloride / vinyl acetate. Vinyl resins such as copolymers, polyacrylic esters, polystyrene, and polystyrene acrylic; acetal resins such as polyvinyl formal, polyvinyl butyral, and polyvinyl acetal; various saturated or unsaturated polyester resins; polycarbonate resins; Cellulosic resin; polyolefin resin; polyamide resin; and the like. These resins can be used singly or arbitrarily blended within a compatible range.

In addition, as the thermoplastic resin, a thermoplastic resin having active hydrogen can be used. Active hydrogen can be selected from those present at the end of the thermoplastic resin in consideration of the stability of each thermoplastic resin.
When the thermoplastic resin having active hydrogen is used as the binder resin (1), by using a curing agent in combination, the active hydrogen and the curing agent react to crosslink and cure the binder resin (1). Heat resistance can be improved. The curing agent can also react with the modified silicone described in detail below to fix the release agent in the receiving layer, and to prevent the release agent from transferring from the receiving layer to the back side.
As the curing agent, isocyanates, chelate compounds and the like can be used, and among them, non-yellowing type isocyanate compounds are preferably used. Specific examples include xylene diisocyanate (XDI), hydrogenated XDI, isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI) and their adducts / burettes, oligomers and prepolymers. In addition, non-yellowing type isocyanate compounds that undergo a reaction within a time sufficient to dry the solvent of the receiving layer coating solution can be used as the curing agent.
The curing agent is generally used in an amount of 0.1 to 4 parts by weight, preferably about 0.5 to 1.5 parts by weight, per 100 parts by weight of the binder resin (1). If the amount is too small, the crosslinking and curing reaction may be insufficient, and the heat resistance of the receptor layer may not be sufficiently improved. On the other hand, if the amount of the curing agent is too large, the content ratio of the release agent is lowered, and it may be easy to cause fusion with the dye binder during printing.

Moreover, a catalyst may be added as a reaction aid for the isocyanate compound, and any known catalyst can be used.
A typical catalyst is a tin-based catalyst di-n-butyltin dilaurate (DBTDL). In addition, dibutyltin fatty acid salt catalysts, monobutyltin fatty acid salt catalysts, dioctyltin fatty acid salt catalysts, monooctyltin fatty acid salt catalysts, dimers thereof, and the like are effective. Since the reaction rate of the tin-based catalyst increases as the amount of tin per mass increases, the type, combination, and addition amount may be selected according to the isocyanate compound to be used.
When a block type isocyanate compound is used, it is also effective to use a block separation catalyst.

In the thermal transfer image receiving sheet of the present invention, the receiving layer comprises a binder resin (1), a release agent (2), and a lubricant that is 0.05 to 5 parts by mass with respect to 100 parts by mass of the binder resin (1). The lubricant (3) is a silicone oil modified at one end of the main chain or at both ends of the main chain and having a viscosity at 25 ° C. of 50 to 500 mm ² / s.
However, the above viscosity is measured according to JIS K 2283-2000 crude oil and petroleum product kinematic viscosity test method and petroleum product viscosity index calculation method. Both the sample and measurement environment are measured at 25 ° C. It is a thing.
If the viscosity is too high, the slipping property is insufficient, and it is easy to cause troubles such as double feeding in a thermal transfer printer, especially in a low temperature environment. Also, if the viscosity is too low, the transportability in the thermal transfer printer is good. Absent.
When the viscosity at 25 ° C. is 50 to 500 mm ² / s and the addition ratio of the lubricant (3) of the main chain one end or main chain both ends modified silicone oil is less than the above range, the lubricity is insufficient. However, it is easy to cause transport troubles such as double feeding in a thermal transfer printer especially in a low temperature environment. On the other hand, if it exceeds the above range, the acceptability of the dye is lowered and a sufficient recording density cannot be obtained. Adverse effects are likely to occur.

As the lubricant (3) of the main chain fragment terminal or main chain both terminal modified silicone oil, polyether-modified silicone oil, phenol-modified silicone oil, alcohol-modified silicone oil, etc. in the chemical structure, respectively, The thing which has the below-mentioned modification group at the chain both ends is mentioned.
Examples of the polyether-modified silicone oil include those obtained by substituting both ends of the main chain of a linear dimethylpolysiloxane with a polyether group, and in particular, a polyether-modified silicone oil represented by the following structural formula (I) Is preferred.

In the structural formula (I), R ¹ represents —R ² (C ₂ H ₄ O) _a (C ₃ H ₆ O) _b H (wherein R ² represents a C1-C5 alkyl group; a Represents an integer of 1 to 20; b represents an integer of 1 to 20). n ¹ represents an integer of 10-60.

The polyether-modified silicone oil represented by the above structural formula can be produced by a known method.
As polyether-modified silicone oils having a viscosity at 25 ° C. of 50 to 500 mm ² / s, X-22-4274, X-22-4952, X-22-6266 (above, manufactured by Shin-Etsu Chemical Co., Ltd.), SF8427 BY16-004 (manufactured by Toray Dow Silicone Co., Ltd.) and the like are commercially available.

Moreover, as a phenol modified silicone oil, what substituted the main chain both terminal groups of the linear dimethylpolysiloxane which is 1 type of silicone oil by the phenol group is mentioned. In particular, a modified silicone oil represented by the following structural formula (II) is preferable.

In the structural formula (II), R ³ is

(Wherein R ⁴ represents a C1-C5 alkylene group)
And the OH- group may be any of o-, m-, and p- sites. n ² represents an integer of 10-60.

The phenol-modified silicone oil represented by the above structural formula can be produced by a known method.
As a phenol-modified silicone oil having a viscosity at 25 ° C. of 50 to 500 mm ² / s, commercially available products include X-22-1821 (manufactured by Shin-Etsu Chemical Co., Ltd.), BY16-799 (manufactured by Toray Dow Silicone Co., Ltd.). ) Etc. are available.

Examples of the alcohol-modified silicone oil include those obtained by replacing one terminal group of linear dimethylpolysiloxane, which is a kind of silicone oil, with an OH group, and alcohol-modified silicone oils having such a structure are also known. It can manufacture by the method of.
As an alcohol-modified silicone oil having a viscosity at 25 ° C. of 50 to 500 mm ² / s, X-22-170DX, X-22-176DX (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like are available as commercial products. is there.

In the description of the above polyether-modified silicone oil, phenol-modified silicone oil, and alcohol-modified silicone oil, each modified group is not limited to the one having the structure of the lubricant and chemical formula shown in the trade name, but the main chain fragment end or main chain Any modified silicone oil that has both ends and can satisfy the condition of a viscosity at 25 ° C. of 50 to 500 mm ² / s can be used as a lubricant that improves transportability at low temperatures.
Further, the modifying group in the lubricant (3) is not limited to a polyether group, a phenol group, and a hydroxyl group, but may be a different type of modifying group such as an amino group, a carboxyl group, or a carbinol group.

The receiving layer in the present invention comprises the above-mentioned lubricant (3) of a modified main chain end or main chain modified silicone oil having a viscosity of 50 to 500 mm ² / s at 25 ° C., 100 parts by weight of the binder resin (1). On the other hand, if it contains 0.05 to 5 parts by mass, a coating solution having one or more types of silicone oil having a viscosity outside the above range as the release agent (2) is further applied and dried. It may be made.
In the present invention, the main chain one-end or main-chain both-end modified silicone oil having a viscosity of 50 to 500 mm ² / s serves as a lubricant, and all the modified silicone oils whose viscosity is outside the above range function as a release agent. To fulfill.
As the silicone oil used as the release agent (2), for example, side chain epoxy-modified silicone oil, side chain amino, polyether-modified silicone oil, and the like can be used in combination.
For example, when using a side-chain epoxy-modified silicone oil as a modified silicone oil such as X-22-3000T (manufactured by Shin-Etsu Chemical Co., Ltd.) as a release agent (2), a thermal transfer sheet particularly during thermal transfer And releasability can be improved.
Examples of the release agent (2) include the above-mentioned lubricant (3) and a release agent of a main chain one-end or main-end both-end modified silicone oil having a viscosity of 50 to 500 mm ² / s at 25 ° C. It is preferable to use a silicone oil having reactivity for any of the silicone oils as (2).
By adding a release agent (2) and a curing agent, the modified silicone oil added as the lubricant (3) is cured and fixed, and the transfer of the modified silicone oil from the receiving layer surface to the contacting surface is prevented. Can do.

As described above, the receiving layer contains a binder resin, a lubricant, and a release agent, and can contain a curing agent and a catalyst. In addition, various additives can be added as necessary. Pigments and fillers such as titanium oxide, zinc oxide, kaolin, clay, calcium carbonate, fine powder silica and the like can be added for the purpose of improving the whiteness of the receiving layer and further enhancing the sharpness of the transferred image. In addition, a known additive such as a plasticizer, an ultraviolet absorber, a light stabilizer, an antioxidant, a fluorescent brightening agent, and an antistatic agent can be added to the receiving layer as necessary.

The receptor layer is a solvent, diluted by arbitrarily adding the binder resin (1) listed above, the lubricant (3) listed above, the mold release agent (2), and additives as necessary. The kneading agent is sufficiently kneaded to prepare a receiving layer coating solution, and this is applied to the above-mentioned base sheet, for example, a gravure printing method, a screen printing method, a reverse roll using a gravure plate It can be applied and dried by a forming means such as a coating method. Coating of an intermediate layer, a back layer, an easy-adhesion layer and the like, which will be described later, is also performed by the same method as the above-described receiving layer forming means.
The thermal transfer image-receiving sheet of the present invention, the coating amount of the receiving layer is preferably 0.5g ^{/ m 2} ~4.0g ^/ m 2 in dry. When the coating amount is less than 0.5 g / m ² at the time of drying, unevenness may occur in the fixing of the dye, and the dye acceptability may be lowered. In addition, a long drying time is required, and productivity and the like may be reduced.

In the thermal transfer image-receiving sheet of the present invention, a layer such as an antistatic layer, a cushion layer, a white pigment and an optical brightener is added between the base sheet and the receiving layer as necessary. It may be formed. Moreover, you may form layers, such as an antistatic layer, a writing layer, a back surface layer, on the surface on the opposite side to the receiving layer formation side of a base material sheet. In particular, the present invention aims to prevent troubles such as double feeding in a thermal transfer printer in a low temperature environment, so that the receiving layer and the back side of the thermal transfer image receiving sheet are fed in contact with each other. Therefore, it is preferable to further prevent the above-mentioned transport trouble by providing a back layer.

(Back layer)
In the thermal transfer image receiving sheet of the present invention, the back layer 4 can be provided on the surface opposite to the surface on which the receiving layer of the base sheet is provided in order to improve transportability and prevent curling. Resin such as acrylic resin, cellulose resin, polycarbonate resin, polyvinyl acetal resin, polyvinyl alcohol resin, polyvinyl butyral resin, polyamide resin, polystyrene resin, polyester resin, halogenated polymer, etc. Inside, nylon filler, acrylic filler, polyamide filler, fluorine filler, polyethylene wax, amino acid powder and other organic fillers, and inorganic fillers such as silicon dioxide and metal oxides are added as additives. Can be used. Moreover, what hardened | cured said resin with hardening | curing agents, such as an isocyanate compound and a chelate compound, can also be used as a back surface layer.

Among the above-mentioned additives, it is particularly preferable to use an amino acid-based powder because of good transportability in a thermal transfer printer in a low temperature environment.
The amino acid-based powder has the following chemical structural formula (III) obtained from L-lysine and a long-chain alkyl acid:

(In the formula, R represents a C _{11 to} C ₁₇ linear alkyl group.)
Means a powder having
A preferred amino acid-based powder is a flat powder composed of N-ε-lauroyl-L-lysine having the following chemical structural formula (IV).

The amino acid powder can be obtained by heating a lysine alkyl salt obtained from a long-chain alkyl acid and L-lysine in a nonpolar solvent such as liquid paraffin or xylene. N-ε-lauroyl-L-lysine powder is available from Ajinomoto Takara Corporation as Amihope LL (trade name).
As the amino acid-based powder, it is preferable to use a powder having an average particle diameter of 10 to 20 μm.
The amino acid-based powder is generally present in the back surface layer in a state of being dispersed in the binder resin.
The amino acid-based powder is preferably used in an amount corresponding to 25 to 200% by mass, preferably 50 to 150% by weight, based on the binder resin. If the amount is too large, the film formability and adhesion may be insufficient, and if it is too small, the desired coefficient of friction may not be obtained.
The coating amount of the back layer is preferably 0.5g ^{/ m 2} ~5.0g ^/ m 2 in dry.

Next, an Example and a comparative example are given and this invention is further explained in full detail. In the text, “part” or “%” is based on mass unless otherwise specified.
Example 1
As a base material sheet, white polyethylene terephthalate [PET] (Lumirror E63S manufactured by Toray Industries, Inc.) with a thickness of 50 μm is urethane on the front and back of coated paper (Oji Paper Co., Ltd. OK top coat; 127.9 g / m ² ). The base material pasted with the system adhesive (Mitsui Takeda Chemical Co., Ltd. Takelac A-969V / Takenate A-5 = 3/1, coating amount: 4 g / m ² (after drying)) was used.
On one surface of the substrate sheet, a coating solution for a dye-receiving layer having the following composition was applied by a bar coater so that the coating amount was 3.0 g / m ² (after drying) and dried (130 ° C., 1 minute) Thus, a thermal transfer image receiving sheet was produced.
Moreover, the coating amount for the back surface layer having the following composition is applied to the surface opposite to the surface on which the receiving layer of the bonded base sheet is provided by a bar coater, and the coating amount is 2.0 g / m ² (after drying). Thus, it applied and dried (110 degreeC, 1 minute), and provided the back layer.

<Composition of Dye Receptor Layer Coating Solution in Example 1>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

<Composition of coating solution for back layer>
Polyvinyl butyral resin [3000-1 manufactured by Denki Kagaku Kogyo Co., Ltd.] 10 parts Amino acid powder [Amihop LL Ajinomoto Co., Ltd.] 10 parts Solvent (isopropyl alcohol / toluene mass ratio 1: 1) 180 parts

(Example 2)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 2>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X122-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 0.45 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Example 3)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 3>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 0.15 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts, catalyst [STN-BL made by Sankyo Gosei Co., Ltd.] 0.025 parts

Example 4
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 4>
・ Polyester resin [Byron 290 manufactured by Toyobo Co., Ltd.] 300 parts ・ Side chain modified amino group, polyether group modified silicone [X-22-3939A manufactured by Shin-Etsu Chemical Co., Ltd.] 6 parts ・ Main chain single-end alcohol modified Silicone [X-22-176DX, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.3 parts, isocyanate (Takenate A-65, manufactured by Mitsui Takeda Chemical Co., Ltd.) 3 parts, catalyst (S-CAT52A, manufactured by Sankyo Co., Ltd.) ] 1.5 parts

(Example 5)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 5>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain, both-end polyether-modified silicone [X-22-6266 manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A -14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Example 6)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 6>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain, both-ends phenol-modified silicone [X-22-1821 manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Example 7)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 7>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain one-end alcohol-modified silicone [X-22-170DX manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Example 8)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 8>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

Example 9
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 9>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 1.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 3.75 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Example 10)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Example 10>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 2.75 parts, main chain one-end alcohol-modified silicone [X-22-176DX manufactured by Shin-Etsu Chemical Co., Ltd.] 1.5 parts, isocyanate [Takenate A- 14 made by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL made by Sankyo Co., Ltd.] 0.025 parts

(Comparative Example 1)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receptor Layer Coating Solution in Comparative Example 1>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts / isocyanate [Takenate A-14 manufactured by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL, Sansha Co., Ltd. Made] 0.025 part

(Comparative Example 2)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receptor Layer Coating Solution in Comparative Example 2>
・ Polyester resin [Byron 290 manufactured by Toyobo Co., Ltd.] 300 parts ・ Side chain amino group, polyether group-modified silicone [X-22-3939A manufactured by Shin-Etsu Chemical Co., Ltd.] 6 parts ・ Isocyanate [Takenate A-65 Mitsui Takeda Chemical Co., Ltd.] 3 parts / catalyst [S-CAT52A, Sankyo Gosei Co., Ltd.] 1.5 parts

(Comparative Example 3)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receptor Layer Coating Solution in Comparative Example 3>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main chain both-end alcohol-modified silicone [X-22-160AS, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, main chain both-terminal amino-modified silicone [X-22-1660B-3, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A-14 manufactured by Mitsui Takeda Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL manufactured by Sankyo Co., Ltd.] 0.025 parts

(Comparative Example 4)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receiving Layer Coating Solution in Comparative Example 4>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side-chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main-chain both-end alcohol-modified silicone [X-22-160AS, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, side chain polyether-modified silicone [KF-353, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A-14 Takei Mitsui Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL, Sankyo Co., Ltd.] 0.025 parts

(Comparative Example 5)
A thermal transfer image-receiving sheet was produced in the same manner as in Example 1 except that the dye-receiving layer coating solution was changed to the following composition under the production conditions of the thermal transfer image-receiving sheet of Example 1.
<Composition of Dye Receptor Layer Coating Solution in Comparative Example 5>
・ Vinyl chloride resin [Solvine C manufactured by Nissin Chemical Co., Ltd.] 150 parts ・ Side-chain epoxy-modified silicone [X-22-3000T manufactured by Shin-Etsu Chemical Co., Ltd.] 7.5 parts ・ Main-chain both-end alcohol-modified silicone [X-22-160AS, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, side chain polyether-modified silicone [KF-355A, manufactured by Shin-Etsu Chemical Co., Ltd.] 0.75 parts, isocyanate [Takenate A-14 Takeda Mitsui Chemical Co., Ltd.] 3.75 parts / catalyst [STN-BL, Sankyo Co., Ltd.] 0.025 parts

(Evaluation)
Next, as described below, the transportability and releasability of the thermal transfer image-receiving sheets of Examples and Comparative Examples were investigated by the following methods.
<Transportability 1>
The produced thermal transfer image-receiving sheet was cut to a size of 101.5 mm × 174.5 mm, 10 sheets were loaded on DIGITAL PHOTO PRINTER DPP-SV55 (manufactured by Sony Corporation), and printing was performed under an environmental condition of a temperature of 5 ° C. The presence or absence of paper feed error was observed and evaluated according to the following criteria. Before the operation, the thermal transfer image-receiving sheet and the printer were allowed to stand for 2 hours under an environmental condition of a temperature of 5 ° C. in order to familiarize them with the environment. In addition, a genuine product of the printer was used as the thermal transfer sheet used for printing.

(Evaluation criteria)
○: No paper feed error ×: Paper feed error ・ The above paper feed error is normally caused by feeding one sheet of thermal transfer image-receiving sheet at the time of paper feeding, and causing printing defects by feeding two or more sheets simultaneously. That is.

<Transportability 2>
Cut the produced thermal transfer image-receiving sheet into a size of 101.5 mm x 174.5 mm so that the image-receiving surface and back side of each thermal transfer image-receiving sheet overlap each other, and apply a load of 20 kgf per A6 size at 60 ° C. and 30% RH environmental conditions. And stored for 24 hours. After storage, leave it at room temperature for 3 hours or more, then leave it for 2 hours under the environmental condition of 5 ° C, then load 10 pieces into DIGITAL PHOTO PRINTER DPP-SV55 (manufactured by Sony Corporation). Printing was performed under the conditions, the presence or absence of a paper feed error was observed, and the evaluation was performed in the same manner as the above-described transportability 1. In addition, a genuine product of the above printer was used as the thermal transfer sheet used for printing.

<Releasability>
The produced thermal transfer image-receiving sheet was cut into a size of 101.5 mm × 174.5 mm, and 10 sheets were loaded on DIGITAL PHOTO PRINTER DPP-SV55 (manufactured by Sony Corporation), and a solid black print was produced under an environmental condition of 25 ° C. And the presence or absence of a paper feed error was observed and evaluated according to the following criteria. Before the operation, the thermal transfer image-receiving sheet and the printer were allowed to stand for 2 hours under environmental conditions at a temperature of 25 ° C. in order to familiarize them with the environment. In addition, a genuine product of the above printer was used as the thermal transfer sheet used for printing.

(Evaluation criteria)
○: No problem.
Δ: Solid printing of three-color printing was possible, but abnormal transfer occurred.
X: Abnormal transfer occurred in most cases.

The evaluation results are as shown in Table 2 below. However, the trade name of the release agent used in the receiving layer of each thermal transfer image-receiving sheet of Examples and Comparative Examples, the type of modification (position of modification group, type of modification), the viscosity of the release agent at 25 ° C., Table 1 shows the content by mass of each modified silicone oil to 100 parts by mass of the binder resin, that is, the silicone content (%).

It is the schematic which shows one Embodiment of the thermal transfer image receiving sheet of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal transfer image receiving sheet 2 Base material sheet 3 Receiving layer 4 Back layer

Claims (3)

A thermal transfer image-receiving sheet having a receiving layer formed on at least one surface of a substrate sheet,
The receiving layer is formed by applying and drying a coating liquid containing a binder resin, a release agent, and a lubricant of 0.05 to 5 parts by mass with respect to 100 parts by mass of the binder resin. Yes,
A thermal transfer image-receiving sheet, characterized in that the lubricant is a main chain one-end or main-chain both-end modified silicone oil having a viscosity at 25 ° C. of 50 to 500 mm ² / s. The thermal transfer image-receiving sheet according to claim 1, wherein the release agent contains a side chain epoxy-modified silicone oil. The thermal transfer image receiving sheet according to claim 1, wherein the receiving layer further contains a curing agent.

Images