JPS6357292A - Ink ribbon for sublimation transfer print - Google Patents

Abstract

PURPOSE:To enable representation of different hue according to the quantity of applying energy, by forming an ink layer containing a plurality of sublimation dyes having respectively different sublimation temperature and hue and a desired binder onto a substrate. CONSTITUTION:Film of polyethylene terephthalate or a capacitor paper can be employed as a basic material 2 for forming an ink layer 1. Sublimation dyes of cyan, yellow or magenta having different sublimation temperature are selected as a plurality of sublimation dyes being contained in the ink layer 1. Consequently, when different quantity of energy is applied onto an ink ribbon 3 corresponding to a different image information, different hue can be represented based on mixture of a plurality of sublimation dyes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ink ribbon used in sublimation transfer printing.

[Summary of the invention]

The present invention provides an ink ribbon for sublimation transfer printing in which an ink layer containing a sublimable dye is formed on a base material, in which a plurality of sublimable dyes each having a different sublimation temperature and hue are used as the sublimable dye. This makes it possible to express different hues in response to different applied energies.

[Conventional technology]

Conventionally, ink ribbons for sublimation transfer printing, which can express only a single color such as achromatic color or cyan, have been used to perform, for example, medical X-ray photography, and the image can be recognized by the density difference of the single color. There is.

[Problem that the invention seeks to solve]

When using the above-mentioned conventional ink ribbon for sublimation transfer printing, different image information is expressed only by shading of the same color, and it is not possible to obtain prints with different hues depending on different image information. Ta. However, if prints expressed in different hues can be obtained in accordance with different image information, recognition of the image information will be more accurate and easier.

In view of the above points, the present invention provides an ink ribbon for sublimation transfer printing that can express different hues depending on the amount of applied energy.

[Means for solving problems]

Ink ribbon for sublimation transfer printing according to the present invention (3)
In this method, an ink layer (Ll) is formed on a substrate (2), which is made of a plurality of sublimable dyes having different sublimation temperatures and hues, and a required binder.

For example, cyan, yellow, and magenta sublimable dyes are selected as the plurality of sublimable dyes having different hues, and sublimable dyes having different sublimation temperatures are selected. Note that it is desirable that the sublimation temperatures of the sublimable dyes are significantly different from each other.

[Effect]

According to the present invention, by containing a plurality of sublimable dyes having different sublimation temperatures and hues in the same ink layer (1), the ink ribbon can be applied with different energy depending on different image information. In the case of (3), it becomes possible to express different color tones based on the color mixture of a plurality of sublimable dyes. Specifically, the sublimation temperature of the magenta sublimable dye is a °C, the sublimation temperature of the yellow sublimable dye is b °C higher than a °C, and the sublimation temperature of the cyan sublimable dye is c'C higher than b °C. if you did this,
When energy is applied until the temperature of the ink layer (1) reaches a degree Celsius, a magenta color is obtained on the photographic paper (5), and then when the applied energy is increased until the temperature of the ink layer (1) reaches b degrees Celsius, it becomes magenta and yellow. When the applied energy is further increased until the temperature of the ink layer (1) reaches c.degree. C., color development is obtained by mixing the colors of magenta, yellow and cyan.

〔Example〕

As shown in FIG. 1, in this example, an ink layer (1) with a thickness of 1 to 4 μm was applied to the substrate using an ink containing cyan, yellow, and magenta sublimable dyes and having the following composition. (2) to produce an ink ribbon (3) for sublimation transfer printing. As the base material (23), for example, a polyethylene terephthalate film with a thickness of 10 μm or a capacitor paper with a thickness of 14 μm can be used.

Ink composition *Sublimable dye (1, If, 1tl)...
・・・・・・・・・12 parts by weight Hydroxypropyl cellulose °゛°…6 parts by weight 8 ethyl cellulose”°゛°
°...Four turns/Tune/5 heavy f[parts Isopropyl alcohol...Track 91190.19.72 parts by weight Meta/-#・
・Listen・Song・Song・Song times・・Songs・S JiiJL section *Sublimable dye i) Cyan dye (C, 1, Tispers Blue 56,
Sublimation temperature 210℃) Concave...Curving curve 4 parts by weight 11
) Yellow dye (C, 1, Disperse Yellow 54, sublimation temperature 190°C)... Song... Listen... Song times... 4 parts by weight i
ii) Magenta dye (C, I, Disperse Red 15, sublimation temperature 170°C) 4 parts by weight 4 parts by weight Using this ink ribbon (3), as shown in Figure 2,
The ink ribbon (3) is heated to a predetermined temperature with a thermal head (4), and the sublimable dye in the ink layer (1) is transferred to the photographic paper (5).
Sublimation transfer was carried out on top. (6) is a platen. By changing the applied energy of the thermal head (4) from high to low, the hues obtained on the photographic paper (5) are changed from black to dark gray, dark brown, red, magenta, and pink. And I was able to change it to white.

In the above example, the cyan, yellow, and magenta sublimable dyes were contained together in the same ink layer. The same photographic paper can contain dyes in different ink layers and suitably contain dyes in multiple ink layers depending on the applied energy.
By superimposing them on each other and subjecting them to sublimation transfer, it becomes possible to express a hue consisting of a mixture of colors in the same way as in the above embodiment.

〔Effect of the invention〕

According to the present invention, colors with different hues can be obtained by simply changing the amount of energy applied during one sublimation transfer using an ink ribbon having one type of ink layer formed thereon. Therefore,
When the present invention is applied to medical electronics (ME) and used to read image information from X-ray photography, unlike conventional black and white or monochromatic shading printing, it is possible to print images according to different image information. Because you can get prints with different hues,
Recognition of image information becomes accurate and easy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the embodiment, and FIG. 2 is a side view of the embodiment. (1) is an ink layer, (2) is a base material, and (3) is an ink ribbon.

Claims (1)

[Claims] An ink ribbon for sublimation transfer printing, in which an ink layer containing a plurality of sublimable dyes having different sublimation temperatures and hues and a required binder is formed on a base material.