JPH02155795A - Image-receiving body for thermal transfer - Google Patents

Abstract

PURPOSE:To form an image exhibited even in a dark place, on a layer having a phosphorescent pigment, by the transfer of a coloring material by heating by a thermal head or the like, by providing a reception layer receiving the coloring material on a substrate and by making the phosphorescent pigment be contained therein. CONSTITUTION:An image-receiving body 10 is formed of a substrate 1 the whole of which contains a phosphorescent pigment, and of a reception layer 2 which is provided on one surface of the substrate and receives a coloring material transferred from a coloring material ink layer of a thermal transfer recording sheet. The thermal transfer recording sheet 11 having the hot-melt or subliming coloring material 4 on a substrate 5 and the image-receiving body 10 having the reception layer 2 on the substrate 1 and containing the phosphorescent pigment are superposed and brought into pressure contact by a thermal head 6 and a platen roller 7 while heated by the thermal head 6, and thereby the coloring material of the heated thermal transfer recording sheet 11 is transferred onto the reception layer 2 of the image- receiving body having the phosphorescent pigment. The image-receiving body 10 for thermal transfer emits a light in the night or in a dark place, since it has the phosphorescent pigment. The light emission is held down in a part whereon the coloring material layer is transferred from the thermal transfer recording sheet by heating by the thermal head or the like, i.e. a part wherein the image is formed, and thus the image being discernible even in the dark place is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image receptor for thermal transfer. More specifically, the present invention provides heat-melting or sublimable ink (coloring material) on a substrate.
The present invention relates to a thermal transfer image receptor in which color recording is performed by heating a thermal transfer recording sheet formed of layers with a thermal head or the like and transferring a coloring material therefrom, and is particularly suitable for nighttime signs.

In recent years, personal computers, televisions, and
2. Description of the Related Art As information terminals such as word processors and displays become more popular, the demand for printers that output these images and characters is increasing year by year.

Recording methods for such printers include an electrophotographic method, an inkjet method, a thermal recording method, and the like, but the thermal recording method is widely used because it is noiseless and the device is easy to maintain.

In this thermal recording method, a thermal transfer recording sheet with a heat-fusible or sublimable coloring material layer is heated by a thermal head, etc., and the coloring material is transferred to a receptor to form an image. An image is obtained.

The object of the present invention is to provide a thermal transfer image receptor that forms an image that can be displayed even in a dark place on a layer containing a phosphorescent pigment by transferring a coloring material by heating with a thermal head or the like, unlike the prior art. It's about offering your body.

The present invention provides a patent image receptor characterized by having a receptor layer on a base material for receiving a coloring material and containing a phosphorescent pigment. .

Aim The thermal transfer image receptor of the present invention undergoes colorant transfer onto a layer containing a phosphorescent pigment.

Next, the present invention will be explained in more detail by way of examples with reference to the drawings.

FIG. 1 is a schematic cross-sectional view showing the sliding structure of a thermal transfer image receptor (10) of the present invention. In FIG. 1a, the image receptor of the present invention (
10) comprises a base material (1) entirely containing a phosphorescent pigment, and a receptor layer (2) provided on one surface of the base material to which the colorant is transferred from the colorant (ink) layer of the thermal transfer recording sheet. It consists of. In the figure, the shaded area indicates that a phosphorescent pigment is contained.

FIG. 1 shows another embodiment of the present invention, in which a phosphorescent pigment is contained in the receptor layer (2) on the substrate (1).

FIG. 1C is a sectional view showing still another embodiment of the present invention, in which a phosphorescent pigment layer (
3) is provided separately.

In this way, when the phosphorescent pigment layer (3) is provided separately, it is possible to increase the packing density of the phosphorescent pigment with a degree of freedom without affecting the necessary characteristics inherent to the base material or the receiving layer. Yes, especially in terms of cost.

As the base material, any material conventionally known as a base material can be used, such as natural paper, laminated natural paper, synthetic paper, various plastic films, colored films, or composites thereof.

Further, an adhesive layer may be provided on the back surface of these base materials, that is, the surface opposite to the receiving layer, and the base material may be used for bone attachment to a wall surface or the like. Adhesives used for such bonding include thermal adhesive,
Examples include pressure-sensitive adhesives and solvent-activated adhesives. To avoid handling troubles, a release paper may be provided if necessary.

Additionally, an optical detection marker may be provided on the back side of the substrate to prevent trouble within the printer, and an antistatic layer or release layer may be provided to prevent static electricity or blocking during storage. .

In order to prevent curling during storage, an anti-curl layer made of various resins or the like may be provided directly on the back surface of the base material or via an adhesive and a release paper on the back surface of the base material.

Next, the material forming the receptor layer is one in which the thermal transfer recording sheet that supplies the coloring material to the receptor layer is provided with a heat-melting ink layer, or one in which an ink layer containing a sublimable dye is provided. It depends on whether In the case of front sound, there is basically no need to provide a special receptor layer, but to improve transferability, a layer with an uneven surface or a highly flexible polyethylene, vinyl chloride, or ethylene-vinyl acetate copolymer may be used. It is preferable to provide a plastic or a thermoplastic elastomer such as.

In the latter case, the material must be dyeable to sublimable dyes, and examples include, but are not limited to, polyester resins, acrylic resins, and butyral resins.

Further, if necessary, a releasable substance or powder may be added to prevent abnormal transfer with the ink layer, or a part of the material may be hardened.

Examples of the phosphorescent pigment used in the present invention include pigments with luminous properties such as zinc sulfide and strondium sulfide phosphors.

When a phosphorescent pigment is contained in the base material as shown in FIG. 1a, the pigment may be added at the time of molding the base material (1). Also,
When a phosphorescent pigment is included in the receptor layer as shown in Figure 1, phosphorescent pigment is added at the time of coating the receptor layer (2). Furthermore, when providing a phosphorescent pigment layer (3) as shown in FIG. 1C, these phosphorescent pigments are dispersed in various resins or elastomers and applied.

As the thermal transfer recording sheet to be transferred to the thermal transfer receptor of the present invention, any conventionally known thermal transfer recording sheet capable of transferring a coloring material can be used.

For example, dyes or pigments are coated with natural wax on a base material (polyester film, polypropyl film, condenser paper, etc.) that is provided with an anti-sticking layer as necessary to prevent fusing with the thermal head and the occurrence of wrinkles. A heat-soluble ink prepared by dissolving or dispersing a suitable heat-melting substance such as a synthetic wax, higher fatty acid or higher alcohol, or a sublimable ink prepared by dispersing or dissolving a sublimable dye together with a suitable binder resin. is used.

In order to carry out thermal transfer using the thermal transfer image receptor of the present invention, a thermal transfer recording sheet having a heat-melting or sublimable coloring material on a substrate, a receiving layer placed close to the sheet, and a receiving layer on the substrate. and a thermal transfer image receptor containing a phosphorescent pigment;
The thermal transfer recording sheet is heated to transfer the coloring material to the receptor layer. That is, as shown in FIG. 2, there is a thermal transfer recording sheet (11) having a heat-fusible or sublimable coloring material (4) on a substrate (5), and a receptor layer (2) on the substrate (+). and a thermal transfer image receptor (10) containing a phosphorescent pigment, and are heated by a thermal head (6) and pressed together by a thermal head (6) and a platen roller (7) to form a heated thermal transfer image. The coloring material on the recording sheet (11) is transferred to the receiving layer (2) of the image receptor having a phosphorescent pigment. The thermal transfer image receptor (10) has a phosphorescent pigment, so it emits light at night in a dark place, and is a portion where a coloring material layer is transferred from a thermal transfer recording sheet by heating with a thermal head, etc., that is, a portion where an image is formed. The light emission is suppressed, and an image that can be identified even in the dark is formed.

Effects of the Invention The thermal transfer image receptor of the present invention has a phosphorescent pigment, so it emits light at night in a dark place, and the portion where the coloring material layer has been transferred from the thermal transfer recording sheet, that is, the image, is heated by a thermal head or the like. The formed portion is suppressed from emitting light, and an image is formed even in a dark place, making it suitable for cautionary notes and signs.

[Brief explanation of the drawing]

FIGS. 1A to 1C are cross-sectional views showing the thermal transfer image receptor of the present invention, and FIG. 2 is an explanatory diagram showing thermal transfer using the thermal transfer image receptor of the present invention. The symbols inside are as follows: ■ 2 base materials, 2. receiving layer, 3 niphosphorescent pigment layer. Figure 1 a Figure 1 Figure 2 Figure 1 C

Claims (2)

[Claims] (1) A thermal transfer image receptor characterized by having a receptor layer for receiving a coloring material on a base material and containing a phosphorescent pigment. (2) The image receptor for thermal transfer according to claim 1, wherein an adhesive layer is provided on the surface of the base material opposite to the receptor layer.