JP2595770Y2 - Anti-counterfeit printing - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forgery-prevention printed matter in which the surface of a voucher such as a gift certificate is subjected to a forgery prevention treatment.

[0002]

2. Description of the Related Art A cash voucher such as a gift certificate is given a certain value by printing on the surface of paper. Therefore, in printing, it is common to perform various processes in order to prevent forgery from being performed easily. For example, in JP-A-51-37294, the protective coating of printed matter such as securities and the information printing ink are made to have a reflective or fluorescent property, and the printed matter is read by an optical reader to prevent forgery. It is determined whether it has been done.

[0003]

However, even when fluorescent ink or the like is used, the above-described conventional forgery-preventive printed matter is printed in a single color for forgery-prevention, so that the forgery-prevention effect is not sufficiently satisfactory. Was.

[0004] The present invention has been made in view of the above problems, and has as its object to enhance the forgery prevention effect of cash vouchers such as gift certificates.

[0005]

According to the present invention, there is provided a forgery-preventive printed material comprising a pattern printing layer on at least one surface of a paper base material.
A plurality of fluorescent inks that are colorless in a visible light region such as white light such as sunlight or a fluorescent light , and change to a color having a different hue upon irradiation with ultraviolet light , on the surface of the pattern printing layer.
And a fluorescent ink printing layer made of the same, whereby the effect of preventing forgery of the medium is enhanced.

[0006]

In the present invention, at least the base material made of paper is used.
Is also provided with a pattern printing layer of normal ink on one side,
Hidden pattern using multiple fluorescent inks on the surface of the pattern print layer
Printing layer printed with fluorescent ink such as
Be killed. In this case, as each fluorescent ink, an ink that is colorless in a visible light region such as white light such as sunlight or a fluorescent lamp and changes into a color having a different hue by irradiation with ultraviolet light is used. Therefore, hidden patterns printed with these inks cannot be seen under sunlight or the like,
It emerges by irradiating ultraviolet rays with a UV lamp or the like.

[0007]

Embodiments will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a forgery-preventive printed matter according to an embodiment of the present invention, and FIG. 2 is an explanatory view of the print pattern.

This embodiment is applied to a cash voucher such as a gift certificate, and a printed matter 1 is provided with a pattern printing layer 3a, 3b made of ordinary ink on both sides of a paper 2 as a base material. Is provided with a fluorescent ink printing layer 4 printed using two types of fluorescent inks on the surface of the pattern printing layer 3b. Here, the fluorescent ink is colorless in a visible light region such as white light such as sunlight or fluorescent light,
Ink that emits two kinds of colors having different hues, such as green and orange, by ultraviolet irradiation is used. Then, such a fluorescent ink is put into each section of the ink fountain partitioned for each color of the offset printing machine, and printing is performed.

[0010] The printed matter 1 thus completed is:
The fluorescent ink printing layer 4 forms a hidden pattern, which cannot be seen in a visible light region such as white light such as sunlight or fluorescent light. When the hidden pattern is irradiated with ultraviolet rays, one side of the printed matter 1 is colored orange and the other side is colored green, and these borders are colored in a rainbow color in which the border gradually changes from orange to green ( In FIG. 2, the shaded area at the upper right indicates an orange-colored area, and the shaded area at the lower right indicates a green-colored area.) Therefore, it is possible to confirm whether the printed matter 1 has been forged by irradiating the printed matter 1 with ultraviolet rays using a UV lamp or the like.

Here, if the pattern printing layer 3b made of ordinary ink below the fluorescent ink printing layer 4 is made to have a color pattern different in color and pattern between the central portion and both side portions, the fluorescent ink printing layer 4
Becomes less noticeable under natural light.

In the above-described embodiment, a case where a hidden pattern having a rainbow-like portion in the middle is printed using two kinds of fluorescent inks has been described. However, the hidden pattern is not necessarily limited to such a pattern. A different pattern may be printed for each color by two kinds of fluorescent inks as shown in a printed matter 1 'shown. In this case, in order to make the pattern printed with the fluorescent ink less noticeable, it is preferable that the underlying pattern print layer 3b has the above-mentioned pattern and that the pattern has a rainbow pattern as described above. It is.

Further, the fluorescent ink used for printing the hidden pattern need not be limited to two kinds, but three or more kinds of inks can be used.

[0014]

[Effects of the Invention] Since the present invention is configured as described above, it is possible to enhance the effect of preventing forgery of cash vouchers such as gift certificates.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram of an anti-counterfeit print according to an embodiment of the present invention;

FIG. 2 is an explanatory diagram of a printing pattern according to the embodiment.

FIG. 3 is an explanatory diagram of a printing pattern according to another embodiment.

[Explanation of symbols]

 1 printed matter 2 paper3a, 3b Picture print layer  4 Fluorescent ink printing layer

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41M 3/14 B42D 15/10 501 G03G 21/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A pattern on at least one side of a substrate made of paper
A fluorescent ink mark comprising a plurality of fluorescent inks , which are provided with a printing layer and are colorless in the visible light region and change in color to have different hues upon irradiation with ultraviolet light , on the surface of the pattern printing layer;
A forgery-preventive printed matter characterized by having a printing layer .