JPS64238B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing method, and more particularly to a printing method in which ink residue remaining on the surface of a printing substrate can be easily removed and treated without causing pollution problems.

In addition to methods of printing on printing materials by forming an ink film on the surface of the printing material, there is also a method of printing a predetermined design by penetrating the material of the printing material itself with penetrating ink. A method of printing has been developed.

In this case, the printing material may be any material that can be penetrated by the penetrating ink, and is not limited to materials such as wood, paper, leather, rubber, etc., but also plastics, rubber, etc.
Even materials such as stones and paint films can be printed by selecting a penetrating ink and applying conditions to promote penetration (for example, heating).

The problem with this method of printing that takes advantage of the permeability of ink is that ink residue remains on the surface of the printing material, so it is necessary to remove this residue by some method, but washing with water is not enough. If it were to be removed, it would cause wastewater pollution.
On the other hand, if it is scraped off by some method, the surface of the printing material will be damaged.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a printing method using penetrating ink that can easily remove the residue remaining on the surface of a printed material, and that does not cause pollution problems or any adverse effects on the printed material itself. It is to be.

Examples of the present invention will be described below.

The number 10 shown in the attached drawings is a printing material. The printing substrate 10 may be any material as long as it has the property of being penetrated by the penetrating ink, and may not only be made of easily permeable materials such as wood, paper, leather, rubber, etc., but also require specific penetration conditions (for example, heating). It may also be made of a material that is difficult to penetrate, such as plastic or rubber. Further, the shape of the printing material 10 is not limited to a sheet-like shape, but may be one that has already been formed into a specific shape.

The penetrating ink can be an ink whose main component is a pigment such as a dye, a cyclic compound such as resorcinol, an amine, or a sulfur compound, or a solid ink for transfer. It may be determined as appropriate depending on the type.

In the conventional method, a penetrating ink design is applied directly to the surface of the printing substrate 10, and if the printing substrate is plastic, for example, the penetrating ink is applied into the printing substrate 10 by heating the design area. Ta. However, applying penetrating ink directly to the surface of the printing substrate 10 as described above leaves ink residue on the surface of the printing substrate after the ink permeates into the printing substrate, causing problems such as pollution. A major challenge was to dispose of this residue so that it would not be present.

Therefore, in the present invention, a thin film (film) as shown by the number 12 in the attached drawings is adhered to the surface of the printing material 10, and a predetermined design is drawn on this thin film 12 with penetrating ink. When the design is made of a non-permeable material such as plastic, a method has been found in which the permeable ink passes through the thin film 12 and penetrates into the substrate 10 by heating the design area.

In this case, the thin film 12 may be made of a permeable material such as polyethylene film, which may be adhered or thermally welded to the printing material using an adhesive, or another type of plastic film may be used. Alternatively, it may be thermally welded. Furthermore, such a film may be extruded together with a molded body. Moreover, without using such a film, for example, a polyurethane resin or the like dissolved in a solvent may be applied to the printing material by spraying, brushing, flow coating, or the like.

The penetrating ink passes through the thin film 12 onto the printing substrate 1
After penetrating into the ink, the ink residue remains on the surface of the thin film 12, so when the thin film 12 is peeled off, the ink residue is removed together with the thin film 12 from the printing substrate 10. Thereafter, if the thin film 12 is disposed of by incineration or the like, problems such as wastewater pollution will not occur. Moreover, even if the thin film 12 is peeled off, the printing material 1
The surface of 0 will not be damaged.

[Brief explanation of drawings]

The accompanying drawings illustrate the printing method of the present invention in which a design is applied to a printing substrate using a penetrating ink over a thin film. 10... Printing material, 12... Thin film.

Claims (1)

[Scope of Claims] 1. Forming a thin film on the surface of a printing material that allows ink to penetrate, drawing a design using penetrating ink on the thin film, and allowing the ink to penetrate into the printing material through the thin film, A printing method characterized by: peeling off the thin film to remove ink residue from the surface of the printing medium together with the thin film.