JP2779622B2 - Sublimation dye transfer method and transfer substrate used in the transfer method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method of transferring a color copy by a sublimation dye type color copier to an object using a sublimation dye, and a transfer base used in the method. About materials.

[Conventional technology]

Conventionally, a method has been considered in which a sublimation dye is mixed into a toner of a copy, and transfer is performed using a transfer original copied using the dye.

Techniques for transferring monochrome or color copies using such sublimation dyes include, for example, JP-A-61-1148.
No. 92 has been proposed.

This prior art utilizes a transfer original in which a sublimation dye is mixed into a toner of a copy and copied using the same. An acrylic-melamine-based thermosetting is applied to the surface of an aluminum material having an oxide film layer formed thereon. The present invention relates to a base material for color copy transfer of a sublimation dye formed with a resin film layer. More specifically, a color copy in which a pattern is formed by a sublimation dye is used as a transfer base paper, and the pattern is formed by applying heat and pressure to the acrylic resin. The melamine-based thermosetting resin coating layer is transferred by sublimation and impregnation.

Further, the present invention is intended to eliminate the disadvantage that black spots are present on the surface of the pattern at the time of transfer of the picture pattern, and particularly appear when the base material of the base material is lightly colored.

These problems have been solved by using a special acryl-melamine resin having high hardness.

However, in the method of transferring an acrylic-melamine-based thermosetting resin film layer on the surface of the aluminum material on which the oxide film layer is formed, the dye is originally transferred by heating and sublimating the sublimation dye to dye it. Therefore, compared to coloring with a large amount of dye or paint such as coating or spraying, a predetermined pattern is dyed with a very small amount of dye obtained by sublimation, and the acrylic-melamine thermosetting resin film In order to make the layer impregnated with a sublimation dye to raise the colored pattern of the resin film layer, a sufficiently clear picture pattern could not be produced with the oxide film layer of the aluminum material thereunder.

However, a method of transferring the material after coloring the base material to a predetermined color has been adopted, but this coloring is originally for obtaining the base color of the base material itself, and the transfer color pattern pattern is used. It was not intended to obtain a contrast with the base material or even to make the transfer color pattern itself stand out clearly. Although the contrast at the boundary line between the base material and the transfer color pattern can be actually obtained by this method, the transfer color pattern itself does not become clear as described above.

Further, a method of coloring a base material to a predetermined color by using a colorant such as a dye, a pigment, or a polymer dye added to an aqueous coating of a melamine-based curable resin has also been proposed. Since the curable resin is used together with the above-mentioned acrylic curable resin and is to be impregnated with the sublimation dye, there is a drawback that the impregnation effect of the sublimation dye due to the addition of such an additive is inevitable. Was.

Furthermore, according to the addition of the above additive, the linear invasion is prevented by the pigment or the dye during the impregnation of the sublimation dye, and as a result, it deviates from the pressing direction at the time of heating and pressing. That is, the linear invasion of the sublimation dye into the thermosetting resin film layer is prevented, and the sublimation dye collides with the additive and is dispersed, thereby blurring the boundary line (outline) of the pattern of the sublimation dye. There was also a problem that clear transfer was difficult to perform.

By the way, in a sublimation dye type color copying machine, upon sublimation of a sublimation dye from a transfer sheet by a thermal head based on an image signal and dyeing on a sheet as an image receiving body, as a means for ensuring a clear color development of the image, For example, Japanese Patent Application Laid-Open No. 61-121993 discloses a method in which a concealing layer for a sheet (resin film) is formed by undercoating using titanium oxide or the like or coating the opposite side of the sheet.

However, such a concealing layer is formed by using titanium oxide together with a thermosetting resin such as an epoxy resin, but the concealing layer and the heterogeneous dyeing layer (polyester resin) have poor compatibility. Means for incorporating a surfactant or the like must be taken. In particular, the retransfer of the color copy targeted by the present invention is performed by using a metal substrate (the material is not transparent, so that the concealing layer is formed by the dyeing layer and the overcoating). When performing high-temperature pressure transfer, there is a risk that peeling may occur between the undercoat and the overcoat, or both may peel from the substrate.

In addition, unlike the transfer of a sublimation dye from a sheet of a sublimation dye provided in a color copier by a thermal head, the retransfer of a color copy requires the sublimation dye to be volatilized again from the copy image once formed. In order to impregnate the dye, it is necessary to apply high temperature and pressure, and the sublimation dye that has entered the dyeing layer due to such high temperature and pressure is stopped by the above-mentioned different concealing layer, and along the interface between the two. It can be estimated that a phenomenon of escape occurs, and it is difficult to temporarily stop impregnation in the invasion direction, and in this respect, reproducibility of a clear image is poor.

[Problems to be solved by the invention]

An object of the present invention is to perform color transfer of a color copy sufficiently on the premise that retransfer of a color copy is performed by applying a high temperature and a pressure to a transparent transfer layer made of a thermosetting oil-based paint mainly containing an acrylic resin and a melamine resin. How to perform the impregnation at high temperature and under pressure while considering the compatibility with the transparent transfer layer made of thermosetting oil-based paint while forming a white base layer that can be performed Is it good?

[Means for solving the problem]

The transfer method using a sublimation dye according to the present invention is a method of forming a copy image copied by a sublimation dye-type color copying machine on a metal base material, a thermosetting oil-based paint mainly containing an acrylic resin and a melamine resin. A transfer method using a sublimation dye, which is performed by heating and pressing the transparent transfer layer at 120 ° C. to 190 ° C. and thereby retransferring to a metal substrate, wherein the thermosetting oil-based paint of the transparent transfer layer is formed of an acrylic resin. 45 to 70 parts by weight of resin and 15 to 28 parts by weight of melamine resin,
The oily solvent is adjusted to 7 to 15 weight, and prior to the formation of the transparent transfer layer, titanium oxide is applied to the transparent transfer layer between one side surface of the base material and the transparent transfer layer.
Spray an oily resin paint containing 45 parts by weight, 27 to 45 parts by weight of an acrylic resin, 7 to 16 parts by weight of a melamine resin, and 5 to 13 parts by weight of an oily solvent, and heat and dry at 160 to 230 ° C. In this method, a white base layer was formed.

Further, the transfer substrate used in the transfer method using a sublimation dye according to the present invention, a copy image copied by a sublimation dye type color copier, formed on a metal substrate, an acrylic resin and a melamine resin. A transfer substrate used in a transfer method using a sublimation dye, which is heated and pressurized at 120 ° C. to 190 ° C. with respect to a transparent transfer layer of a thermosetting oil-based paint as a base material, and is re-transferred to a metal substrate. The thermosetting oil-based paint of the transparent transfer layer, 45 to 70 parts by weight of acrylic resin and 15 to 28 parts by weight of melamine resin,
An oily solvent is constituted by 7 to 15 weight, and between one side surface of the base material and the transparent transfer layer,
27 to 45 parts by weight of titanium oxide, 27 to 45 parts of acrylic resin
And a white base layer of an oily resin paint containing 7 to 16 parts by weight of a melamine resin and 5 to 13 parts by weight of an oily solvent.

[Action]

According to the present invention, the base material of the white base layer and the transparent transfer layer for securing color development is made of the same acrylic resin and melamine resin, and the weight ratio of both is substantially the same (transparent). For the transfer layer, 45 to 70 parts by weight of an acrylic resin and 15 to 28 parts by weight of a melamine resin. For the white base layer, 27 to 45 parts by weight of an acrylic resin and 7 to 16 parts by weight of a melamine resin. Even in the case of re-coating the material, the compatibility between the two materials ensures good integration, and the occurrence of post-peeling can be prevented beforehand.

And, since the white base layer also basically allows the impregnation of the sublimation dye, the sublimation dye that has infiltrated under high temperature and pressure may pass through the transparent transfer layer locally. In addition, the penetration into the underlying white base layer is allowed to some extent (the penetration is prevented where titanium oxide is scattered), and the boundary between the two formed by the heterogeneous two-layer coating as in the prior art described at the beginning. There is no phenomenon that all the particles are scattered along the surface, and the operation can be temporarily stopped in the impregnation direction, and an ideal clear image with little disturbance in the image contour can be obtained.

Further, by setting the titanium oxide of the white base layer to 27 to 45 parts by weight, the above-mentioned sufficient color-developing action of the color after transfer and the appropriate impregnation action of the sublimation dye (when transmitted through the transparent transfer layer) Can be demonstrated.

The transfer base material used in such a transfer method is capable of transferring a clear image with excellent color development, but by using the same resin for the white base layer and the transparent transfer layer as described above, The surface can be reduced in cost, and the application (spray) and drying can be processed by the same process, and the cost can be reduced also in the processed surface.

〔Example〕

Examples of the transfer method using a sublimation dye and the substrate used in the transfer method according to the present invention will be described in detail below.

First Example An aluminum plate was selected as a substrate to be transferred. The substrate may be any material that can withstand about 160 ° C. to 230 ° C. of the heat applied in the intermediate step to the transfer step described below. A thin white base layer was formed on one side of the aluminum plate by spraying. After the completion of the coating, the coating was heated at about 190 ° C. for 15 minutes, and cured by volatilization of the contained solvent.

This white base layer is made of titanium oxide powder as a pigment.
7.5 parts by weight, 38,7 parts by weight of acrylic resin varnish, 12.3 parts by weight of melamine resin varnish, a precipitation inhibitor as an additive,
The pigment dispersant and the leveling agent were constituted by a total of 2.5 parts by weight, and as the oily solvent, butycelloselog, isosacbutyl and xylol were constituted by a total of 9.0 parts by weight.

Further, a transparent transfer layer of a thermosetting oil-based paint was formed on the white base layer by spraying. At this time, the mixture was heated at about 190 ° C. for 15 minutes and similarly cured by volatilization of the contained solvent.

This transparent transfer layer is mainly composed of 63.5 parts by weight of acrylic resin varnish and 21.7 parts by weight of melamine resin varnish,
The additive was mainly composed of 1.5 parts by weight of a leveling agent, and the oily solvent was composed of a total of 11.5 parts by weight of butycellosolve, isosaqubitil, and xylol.

A transfer original (reverse image or normal image) obtained by color copying using a toner containing a sublimation dye (commercially available) is placed on the transparent transfer layer of the base material thus constructed, For 1 minute.

Thereafter, the original was peeled off from the substrate, and the surface was wiped off with alcohol or the like, so that a clear color copy could be transferred.

Glass, a copper plate, an iron plate, or the like was used as the substrate, but the object of the present invention was achieved.

When the titanium oxide powder was varied between 27 and 45 parts by weight, the object of the present invention was achieved.

Further, the acrylic resin in the white base layer is 27 to
When the amount of the melamine resin was changed from 7 to 16 parts by weight and the amount of the oily solvent was changed from 5 to 13 parts by weight, the object of the present invention was likewise achieved.

Second Example A brass plate was selected as a substrate to be transferred.
A thin white base layer was formed on one side of the brass plate by spraying. After this coating is completed,
The mixture was heated for a minute, and cured by the evaporation of the contained solvent.

This white base layer contains 4 titanium oxide powders as pigments.
1.0 part by weight, 36,5 parts by weight of acrylic resin varnish, 12.0 parts by weight of melamine resin varnish, a precipitation inhibitor as an additive,
The pigment dispersant and the leveling agent were composed of a total of 2.5 parts by weight, and as an oily solvent, butycelloselog, isosacbutyl and xylol were composed of a total of 8.0 parts by weight.

Further, a transparent transfer layer of a thermosetting oil-based paint was formed on the white base layer by spraying. At this time, the mixture was heated at about 200 ° C. for 20 minutes and similarly cured by volatilization of the contained solvent.

This transparent transfer layer is mainly composed of 65.0 parts by weight of acrylic resin varnish and 21.5 parts by weight of melamine resin varnish,
The additive was mainly composed of 1.5 parts by weight of a leveling agent, and the oily solvent was composed of a total of 12.0 parts by weight of butycellosolve, isosaqubitil, and xylol.

A transfer original (reverse image or normal image) obtained by color-copying using a toner containing a sublimation dye (commercially available) is placed on the transparent transfer layer of the base material thus constructed, For 30 seconds.

Thereafter, the original was peeled off from the substrate, and the surface was wiped off with alcohol or the like, so that a clear color copy could be transferred.

In the transparent transfer layer, 45 to 70 parts by weight of an acrylic resin, 15 to 28 parts by weight of a melamine resin, and 7 to
Varying between 15 parts by weight resulted in achieving the objectives of the present invention.

〔The invention's effect〕

According to the transfer method using a sublimation dye according to the present invention, according to the method of the present invention, when a color image obtained by a sublimation dye-type color copier is re-transferred to a metal substrate, color development is performed. The white base layer and the transparent transfer layer to be secured are made of the same material, and have approximately the same weight ratio to improve the compatibility of both, even in the case of overcoating on a metal substrate,
Even if transfer is performed by high temperature and heating, the three members are reliably integrated, and it is possible to avoid a situation in which post-exfoliation occurs between the white base layer and the transparent transfer layer beforehand, and to reliably maintain a clear image. This has the effect.

In addition, since the white base layer basically allows the sublimation dye to be impregnated, the sublimation dye that has infiltrated under high temperature and pressure may locally pass through the transparent transfer layer. However, the penetration into the underlying white base layer is allowed to some extent (it is prevented where titanium oxide is scattered), and along the boundary between the two, which is caused by the heterogeneous two-layer coating as in the prior art. It is possible to temporarily stop the infiltration of the sublimation dye in the impregnation direction without causing a phenomenon that all the particles are dispersed, and it is possible to obtain an ideal clear image with little disturbance of the image contour caused by the dispersion. There is an advantage that you can.

Further, by using titanium oxide of the white base layer in an amount of 27 to 45 parts by weight, the above-described sufficient color development of the color after transfer to a metal substrate having a light color or a solid metal color, and an appropriate amount of the sublimation dye (When transmitted through the transparent transfer layer).

The transfer base material used in such a transfer method, while being capable of transferring a clear image with excellent color development, uses the same acrylic resin and melamine resin for the white base layer and the transparent transfer layer as described above. Accordingly, there is an advantage that the cost can be reduced in the material aspect, and the application and drying can be processed by the same process, and the cost can be reduced also in the processing aspect.

Claims (2)

(57) [Claims] 1. A transparent transfer layer of a thermosetting oil-based paint mainly composed of an acrylic resin and a melamine resin formed on a metal substrate by copying a copy image copied by a sublimation dye type color copy machine. A transfer method using a sublimation dye that is heated and pressurized at 120 ° C. to 190 ° C. and re-transferred to a metal substrate, wherein the thermosetting oil-based paint for the transparent transfer layer is formed of an acrylic resin.
45 to 70 parts by weight, 15 to 28 parts by weight of the melamine resin, 7 to 15 parts by weight of the oily solvent, and, prior to the formation of the transparent transfer layer, one side of the base material and the transparent transfer layer Between 27 and 45 titanium oxide
Spray an oil-based resin paint containing 27 to 45 parts by weight of an acrylic resin, 7 to 16 parts by weight of a melamine resin, and 5 to 13 parts by weight of an oily solvent, and heat and dry at 160 to 230 ° C. to obtain a white color. A transfer method using a sublimation dye for forming a base layer. 2. A transparent transfer layer of a thermosetting oil-based paint mainly composed of an acrylic resin and a melamine resin formed on a metal substrate by copying a copy image copied by a sublimation dye type color copy machine. A transfer substrate used in a transfer method using a sublimation dye that is heated and pressurized at 120 ° C. to 190 ° C. and re-transferred to a metal substrate, wherein the thermosetting oil-based paint for the transparent transfer layer is acrylic. Resin
45 to 70 parts by weight, 15 to 28 parts by weight of melamine resin, 7 to 15 parts by weight of an oily solvent, and 27 to 45 parts of titanium oxide between one side surface of the base material and the transparent transfer layer. Parts by weight, 27 to 45 parts by weight of acrylic resin, 7 to 16 parts by weight of melamine resin, 5 parts of oily solvent
A transfer substrate, comprising a white base layer of an oil-based resin paint containing from 1 to 13 parts by weight.