JPH01166972A - Thermal transfer printing method and thermal transfer printed matter - Google Patents

Abstract

PURPOSE:To obtain a thermal transfer printed mater with high printing quality having no possibility of color migration even if a colored printing paper is used, by transferring a white ink to a printing paper prior to the transfer of each color from an ink sheet. CONSTITUTION:On a colored printing paper 13 a white ink 12 of an ink sheet 11 is thermally transferred. Succeedingly, inks, e.g. a yellow ink 2, a magenta ink 3, and a cyan ink 4, are successively thermally transferred on a white ink layer 14 to obtain a thermal transfer printed matter 15. In this manner, since the color of the printing paper is also completely fixed by the white ink, the color inks transferred on the white ink layer exhibit the tones intrinsic to the respective color inks without being affected by the color of the printing paper. As a result, a printing with clear tones can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a thermal transfer printing method and a thermal transfer print, in particular,
This invention relates to a thermal transfer printing method that enables thermal transfer of each color ink to colored printing paper with low energy without affecting the color of the colored printing paper, and to a thermal transfer printed matter transferred by the above method.

[Conventional technology]

The conventional printing method using thermal transfer is as shown in Figure 3.
For example, yellow ink (2), magenta ink (3)
, cyan ink (4) were sequentially thermally transferred onto a printing paper (5) shown in FIG. 4 using an ink sheet (1) to which electricity was applied, to obtain a thermal transfer print (6).

[Problem that the invention seeks to solve]

Conventional thermal transfer printing methods are configured as described above, and thermal transfer prints as described above are obtained, but they always use white high-quality paper as the printing paper.

However, sometimes colored photographic paper is used as the photographic paper, in which case the colors of the photographic paper affect each color transferred, reducing the quality of the print, and the energy required to melt and transfer the ink also increases. The problem was that it required a large amount of paper compared to the conventionally used white high-quality paper.

This invention was made to solve the above-mentioned problems, and even when colored photographic paper is used as the photographic paper, it can produce high-quality prints without color fading, and it also requires a large amount of energy. The object of the present invention is to obtain a thermal transfer printing method and a thermal transfer print that does not require the following.

[Means for solving problems]

The thermal transfer printing method according to the present invention transfers white ink to a printing paper prior to transfer from an ink sheet of each color, and the printed matter includes a white ink layer thermally transferred onto the printing paper, A "printed image" is composed of ink layers of each color that are sequentially thermally transferred onto the white ink layer.

[For production]

Since the printing method and printed matter of the present invention are configured as described above, during printing, the color of the printing paper is completely fixed by the white ink and becomes white.
Each color ink transferred onto the white ink layer reveals its original color tone without being affected by the color of the printing paper, and as a result, a print with clear color tone is obtained.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment thereof.

What is shown in FIG. 1 is an ink sheet (11) constructed according to the present invention, and the ink sheet (11) includes:
In addition to each color ink, for example, yellow ink (2), magenta ink (3), and cyan ink (4), a white ink (12) is provided preceding each of these color inks.

This ink sheet (11) is used to print, but first, the white ink (12) of the ink sheet (11) is thermally transferred to the colored photographic paper (13), and then the colored photographic paper (13) is printed. As shown in Figure 2, between the colored photographic paper (13) and each color ink layer, a white ink layer (
14), and the subsequent color inks (21(3)
) The thermal transfer in (4) can be performed with low energy.

Next, each color ink, such as yellow ink (2), magenta ink (3), and cyan ink (4), is sequentially thermally transferred onto the white ink layer (14) to obtain a thermal transfer print (15) shown in FIG. i.e. colored photographic paper (13)
A white ink layer (14) and a yellow ink layer (1) are sequentially formed on top.
6), magenta ink layer (17), cyan ink layer (1)
The ink layers of each color such as 8) are overlapped to form a thermal transfer print (15
) is configured.

In addition, in the above example, each color ink is yellow ink (
2), Magenta ink (3), Cyan ink (4) 3
Although the colors are described above, the number of colors is not limited to this, and black may be added to four colors, and the number of color types is not limited, and the transfer order is not limited to that described in the above example. . Further, as the photographic paper, white photographic paper may be used instead of colored photographic paper.

〔Effect of the invention〕

As described above, according to the present invention, the printing method is configured such that white ink is thermally transferred prior to thermal transfer of each color, and the printed matter is configured such that each color ink layer is superimposed on the white ink layer. Therefore, even when printing on colored photographic paper, the colors of each color ink layer are stopped by the white ink layer and do not stand out.
Therefore, the color of the colored photographic paper does not affect the image, and as a result, it is possible to obtain a high-quality image with no clear color transfer, and it is also possible to express white color. The printing quality is also improved, and furthermore, it is possible to obtain a thermal transfer printing method and a thermal transfer print that require less energy for thermal transfer.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an ink sheet used in an embodiment of the present invention, Fig. 2 is a cross-sectional view of a thermal transfer print formed by transferring with the ink sheet of Fig. 1, and Fig. 3 is a conventional ink sheet. FIG. 4 is a sectional view of a conventional thermal transfer print made of the ink sheet of FIG. 3. (2) Yellow ink, (3) Magenta ink, (4) φ cyan ink, (11) φ ink sheet, (12) White ink, (13) 9 colored printing paper, ( 14) @ White ink layer, (15) Thermal transfer print, (16) Φ Yellow ink layer, (17i Magenta ink layer, (18) Cyan ink layer. Note that the same symbols are used in each figure. indicates the same or equivalent part. Figure 1 Figure 2

Claims (2)

[Claims] (1) It is characterized by having a white ink transfer step of thermally transferring white ink onto photographic paper, and a color ink transfer step of sequentially transferring each color ink onto the white ink of the photographic paper onto which the white ink has been thermally transferred. A thermal transfer printing method. (2) It is characterized by having a white ink layer in which white ink is transferred onto the photographic paper, and each color ink layer in which each color ink is sequentially transferred in a layered manner onto the white ink layer. Heat transfer prints.