JPS63128988A - Production of thermal transfer recording medium - Google Patents

Abstract

PURPOSE:To enable the condition of a matte surface of a substrate to be faithfully transferred onto a printing surface by a method wherein a layer having releasability from the substrate and minimum thermal deformation properties is provided between the matte surface of the heat-resistant matte film substrate and a hot melt transfer coloring layer. CONSTITUTION:A heat-resistant matte film substrate 1 is a heat-resistant film having at least one matted surface. As a film forming material, plastics such as polyester and papers such as condenser paper are generally used. As the matte processing, either a processing such as an embossing of the film itself or a roughening by coating a matte coating agent may be used. A release layer 2, which is made of a component containing ethylene unsaturated group in the molecule and contains acryloyl group in the molecule as a component, is crosslinked due to the irradiation of ionizing radiation after being coated. A coloring layer 3, which is a conventional hot melt transfer ink layer, is printed by using a thermal printer, whereby a printed matter with a matte printing surface is obtained.

Description

[Detailed Description of the Invention] (Industrial Application Field) Is the present invention a thermal head? The present invention relates to a method of manufacturing a thermal transfer recording medium used in the thermal transfer recording device used, and particularly to a method of manufacturing a thermal transfer recording medium capable of matte printing.

(Conventional technology) Thermal head? The thermal transfer printer used has 5 low noise levels.
Rapid growth in recent years due to light paper, less selectivity of transfer paper, etc.? However, we are not in a position to sufficiently respond to the demands for controlling the print surface's roundness, especially for matte printing. Matte printing? Regarding stable conduction ℃, has the surface been traditionally used as a base material? Matte plastic film? Or use a matte layer on the surface of the plastic film by coating or other methods? establish. Furthermore, is there a matting agent such as inorganic powder in the fA transfer ink? Methods such as mixing have been proposed.

However, all of these methods do not produce stable or matte printing for the following reasons. Is the purpose difficult to accomplish and only under extremely limited practical conditions? could not be achieved. That is, the roughened surface of the base material? In a method where the ink is directly transferred to the ink layer on the printed material, the temperature is
Generally, it is necessary to peel off the base material after the ink layer has stopped deforming sufficiently, but many conventional thermal transfer inks are waxes with melting points of 60°C to 80°C. Because of this, the temperature on the base material side near the thermal head cannot solidify sufficiently before peeling, and the temperature on the base material side α
No mark? The transferred ink surface could not be fixed in a completely transferred state. This trend will become even more pronounced as printers become faster.

For similar reasons, is there a matting agent in the ink? Is the method of mixing sufficient and stable matte printing? I haven't reached the point of achieving it.

(Object of the Invention) The present invention has been made in view of the drawbacks of conventional thermal transfer recording media as described above.
Well, stable matte printing for a wide range of thermal printers? An object of the present invention is to provide a method for manufacturing a thermal transfer recording medium that makes it possible to produce a thermal transfer recording medium.

(Means to achieve the purpose) The above purpose? In order to achieve this, the present inventor uses a heat-resistant thin film substrate and a matte substrate whose C1 surface is roughened or a matte treatment such as a matte coating? Applied heat-resistant matte thin film base material? Is there an ethylenically unsaturated group in the molecule on its matte surface?
Transparent or colored 1-? Is there a heat-melting transferable color layer on top of that? By providing and irradiating with ionizing radiation such as a Seiko beam, the layer in contact with the substrate? By cross-linking, does the matte surface of the base material appear when printing? Is it a matte print by transferring it to the print surface that has been transferred to the transfer paper? What can you get? Heading The present invention has been arrived at.

What is the content of the following 1 invention? This will be explained according to FIG.

FIG. 1 is an explanatory diagram of the structure of a thermal transfer recording medium obtained by the present invention. The heat-resistant matte thin film base material +ll is a heat-resistant thin film in which at least one side of the heat-resistant 4-layer base material has been matted by 710 degrees. The film forming material is polyester, polyamide,
Polyimide, polysulfone.

Plastics such as polyether sulfone and papers such as condenser paper are commonly used. The matte finish may be either by processing the film itself by double bossing or by roughening the surface by applying a matte coating agent. Furthermore, is there a heat-resistant coating layer to improve the runnability of the media? Coating on the opposite side of the substrate can also be carried out as necessary.

Is the release layer (2) an ethylenically unsaturated group in one molecule? A layer consisting of components containing acrylic acid ester monomers and oligomers such as diethylene glycol diacrylate, trimethylol broban triacrylate, and sameethylene diacrylate. be. This layer should be cross-linked by irradiation with female radiation after training. Further, the release layer (2) may optionally be shield-colored like the colored ink layer (3). The colored ink layer 3) is a normal heat transferable ink, and is formed from a mixture of wax, paint, dispersant, softener, etc. -Actual commercial example: Teyori:・-Explain.

2I〒(3' row) If 5.7μ polyester film with one side VC matte thermosetting resin film? What did you form? A mixture of 10 parts of methylolpropane triacrylate and 50 parts of hexamethylene methacrylate was applied to the matte surface of the base material.
It was coated at the ratio of A. Next, what is this coating layer IC electron beam irradiation setting? Acceleration REE 175 kV in an atmosphere with an oxygen concentration of 500 ppm or less, irradiation dose 1.5 Mrad
2 lines of irradiation and peeling 7iI layer? It's 1to.

After sowing, add polyethylene with a melting point of 72°C.

Hot-melt coloring ink consisting of 80 parts of carbon black, 17 parts of carbon black, and 3 parts of dispersant? Coated at a ratio of 4.5%/ze, ℃ hot melt transferable coloring 1ψ? Provided with thermal transfer recording media? It's a boat. this? Line type thermal head with dot density 9.4 AOT/RTRM? B e c using a thermal printer equipped with an energy condition of 0.5 mJ/da t.
k When printed on paper with a smoothness of 150 seconds, does the print surface lose its luster? It's outside.

(Function, effect) Is the base material surface of the thermal transfer recording medium matte? In order to completely shape the surface of the transfer layer on the transfer paper during thermal transfer, is it necessary to avoid thermal deformation during transfer? Layers to minimize as much as possible? Heat resistance #l
One method is to provide it at the interface with the thin film substrate.

Therefore, in the present invention, there is a gap between the faded surface of the heat-resistant matte thin film base material and the heat-melt transferable colored layer, so that there is no releasability from the base material.
Is there a layer with a temperature of ℃ and less thermal deformability? Is the composition crosslinkable by ionizing radiation such as an electron beam? Is it possible to remove the layer by applying it and making it thicker by irradiating it with radiation? In order to form, during transfer, the degree of deterioration of the surface of the base material and dust? It will be faithfully transferred to the printing surface.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural explanatory diagram of a thermal transfer recording medium obtained by the present invention. [11...Heat-resistant matte thin film base material (2)...Peeling layer, 3)... Thermal transferable coloring diagram 1

Claims (3)

[Claims] (1) A method for producing a thermal transfer recording medium having at least a heat-melting transferable colored layer on one side of a heat-resistant thin film base material, wherein a heat-resistant matte thin film base material is used as the heat-resistant thin film base material; and the heat-melt transferable colored layer, a peeling layer made of a component containing an ethylenically unsaturated group in the molecule is provided, and the peeling layer is crosslinked with ionizing radiation. A method for manufacturing a thermal transfer recording medium for recording. (2) The method for producing a thermal transfer recording medium according to claim 1, wherein the release layer is colored. (3) The method for producing a thermal transfer recording medium according to claims 1 and 2, wherein the matte surface of the heat-resistant matte thin film base material is formed by a matte coating layer.