JP2969167B2 - Engraved intaglio printed matter and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention mainly relates to printed materials used for banknotes, passports, securities, cards, etc., which are required to prevent forgery and falsification. The present invention relates to the manufacturing method.

[Conventional technology]

Banknotes, passports, securities, cards, and the like are required to be hardly forged or altered due to their properties. As a visual counterfeit prevention measure, an ink using a special pigment such as gold ink, silver ink, fluorescent ink, or the like, which is provided with a counterfeit prevention means is known. In addition, there is also known one in which a latent image pattern is applied in the direction of an image.

[Problems to be solved by the invention]

In the forgery prevention measures described in the related art, forgery is likely to be forged, and in many cases, the forgery can be performed by photolithography, and it is difficult to provide a complete forgery prevention means.

The present invention makes it difficult to prevent forgery and falsification by color copying and photographic methods by fixing a special material to the engraved intaglio image, and also allows ordinary users to visually judge authenticity. It is an object of the present invention to provide an engraved intaglio printed matter having a high anti-counterfeiting effect and a high artistic value, and a method for producing the same.

[Means for solving the problem]

In order to achieve the above object, in the present invention, on the printed matter immediately after intaglio printing using an electron beam-curable engraving intaglio ink, various functional materials, for example, pearl pigment, magnetic pigment,
After adhering metal powder such as pseudo-gold powder and pseudo-silver powder, glass beads, and the like, an electron beam is applied to cure the ink, and at the same time, the functional material is completely adhered to the engraved intaglio image. Thereafter, the material remaining in the portion other than the image is removed to obtain a printed matter.

The optical effects of the pearl pigments, gold and silver powders, glass beads, etc. described above are difficult to duplicate by color copying or photographic methods, and when these materials are simply mixed into the ink, the optical effects are remarkable. Will be spoiled.

In addition, it is difficult to fix the above-mentioned functional material on the image instantly before the surface adhesion of the ink is reduced, and it is difficult in the ultraviolet curing method having poor transmittance, and it is excellent in transmittance like electron beam. It can only be achieved by a curing method.

[Action]

Among the printed materials obtained by the above method, when a pearl pigment or gold-silver powder is adhered, a printed material having a unique glow is obtained. When glass beads are used, when the printed matter is tilted and illuminated from one direction, a printed matter having a remarkable reflection intensity can be obtained by retroreflection light.

〔Example〕

 Embodiments will be described below with reference to the drawings.

In Example 1, as shown in FIG. 1, after engraving intaglio printing on paper (3) with electron beam-curable ink [EB ink] (1), pearl pigment (2) is immediately adhered to the entire printed matter. . By passing the printed matter through an electron beam irradiation device, the entire image to which the pearl pigment (2) is attached is instantaneously cured, and the pearl pigment (2) is completely fixed to the surface of the engraved intaglio image.

Since the surface of the uncured EB ink (1) has a sufficient adhesive strength to adhere the pearl pigment (2), the pearl pigment (2) on this object is strong after being cured by electron beam irradiation. It is adhered to the surface of the object, and has excellent resistance to choking. Since such printed matter is difficult to duplicate by a normal printing method, a printed matter having very excellent anti-counterfeiting properties can be obtained by this printing method.

In Example 2, as shown in FIG. 1, engraved intaglio printing is performed on paper (3) with EB ink (1), and then immediately a suspected gold powder or a suspected silver powder (2 ') is adhered to the entire printed matter. By passing this printed matter through an electron beam irradiator, the entire image to which the suspected gold powder or the suspected silver powder (2 ') is attached is instantly cured, and the suspected gold powder or the suspected silver powder (2') is completely engraved. Fix to the surface.

Since the surface of the uncured EB ink (1) has a sufficient adhesive strength to adhere the suspicious gold powder or suspicious silver powder (2 '), the suspicious gold or silver powder (2') on this image is After being cured by electron beam irradiation, it is firmly fixed on the image surface and has excellent choking resistance. Since such printed matter is difficult to copy by a normal printing method, a printed matter having very excellent anti-counterfeiting properties can be obtained also by this printing method.

In Example 3, as shown in FIG. 2 (a), immediately after engraved intaglio printing on paper (3) with EB ink (1), retroreflective glass beads (2 ″) are adhered to the entire printed matter. After this, glass beads (2 ″) were pressed against the object with a roller [FIG. 2 (b)]. By passing the printed matter through an electron beam irradiation device, the entire image to which the glass beads (2 ") are attached is instantaneously cured, and the glass beads (2") are completely fixed to the surface of the engraved intaglio image.

Since the surface of the uncured EB ink (1) has a sufficient adhesive force to adhere the glass beads (2 "), the glass beads (2") on the object are cured by electron beam irradiation. After that, it is firmly fixed to the image surface and has excellent choking resistance. Such a printed matter has a strong retroreflective property and is difficult to copy by a normal printing method. Therefore, this printing method can provide a printed matter having extremely excellent anti-counterfeiting properties.

〔The invention's effect〕

According to the printing method of the present invention, in a printed material that requires counterfeiting prevention measures and counterfeiting prevention measures such as banknotes, passports, securities, cards, and the like, and whether it is true or false, other printed methods are difficult to forge and falsify. It is now possible to provide a printed material that can be obtained and can be easily identified.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a printed matter in which a pearl pigment or the like is adhered on an engraved intaglio printed matter, FIG. 2 (a) is an enlarged sectional view in which glass beads are similarly adhered, and FIG. FIG. 3 is an enlarged cross-sectional view in which the glass beads of FIG. 1 ... Electron beam curable ink 2 ... Functional substances such as pearl pigments 2 '... Pseudo gold powder, Pseudo silver powder 2 "... Glass beads 3 ... Printed object (paper layer)

Claims (2)

(57) [Claims] 1. Immediately after printing an engraved intaglio object with an electron beam-curable ink, various substances such as pearl pigments, suspicious gold powder, suspicious silver powder, magnetic pigments and glass beads are adhered onto the engraved intaglio object. The intaglio printed matter characterized in that the above-mentioned various substances are fixed on the engraved intaglio image by irradiating the intaglio. 2. Immediately after printing an engraved intaglio image with an electron beam-curable ink, various substances such as pearl pigments, pseudo-gold powder, pseudo-silver powder, magnetic pigments and glass beads are adhered onto the engraved intaglio image. Irradiating the above-mentioned various substances on the engraved intaglio image to produce an intaglio printed matter.