JP2000326620A - Cut form sheet with watermark - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cut form sheet with a watermark without aging change. SOLUTION: The cut form sheet 1 with a watermark comprises a watermark ensign portion 3 having a watermark pattern layer 4 printed with oily ink on a surface of base paper 2 and edging pattern layers 5 printed along peripheral edges of the watermark pattern with shielding ink of paper color. In the ensign portion 3 of such a constitution, even if the layer 4 printed with the oily ink is diffused and stained due to aging change, the shielding layers 5 specify the edge of the pattern, and hence the pattern shape is still maintained so that the watermark pattern is not blurred.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a certificate, a registration certificate,
It is used for securities, cash vouchers, and the like, and relates to a form sheet with a watermark that can prevent forgery and the like.

[0002]

2. Description of the Related Art Various countermeasures for preventing counterfeiting of documents such as certificates and securities have been proposed.

[0003] As a simple means of this forgery prevention means, a watermark mark is formed on a base paper, and by looking through the paper surface, it is determined whether or not the form is a genuine base paper according to the presence or absence of the watermark mark. Has been used for a long time.

As a watermarking technique, a base paper is impregnated with an oil-based ink, and the permeability of the light is improved by the oil-based ink soaked into the base paper, whereby the transmission between the surface where the oil-based ink is present and the surface that is not printed is coated. There has been proposed a configuration in which a watermark mark portion is formed by division depending on the degree.

[0005]

By the way, when the watermark mark is formed by the above-mentioned oil-based ink, the boundary of the pattern is easily blurred and a sharp pattern cannot be formed. Further, even after the formation, the ink spreads and changes with time, so that the watermark mark portion cannot be stably formed and maintained.

An object of the present invention is to provide a new form sheet with a watermark that can solve the problem of the conventional configuration.

[0007]

According to a first aspect of the present invention, there is provided a watermark pattern printed on a paper surface of an original paper with an oil-based ink, and a watermark pattern printed along the periphery of the watermark pattern with a paper-color light-shielding ink. This is a form sheet with a watermark, comprising a watermark mark portion composed of a border pattern layer.

In the watermark mark portion having such a configuration, the oily ink seeps into the base paper, and the light transmittance of the surface portion having the watermark pattern layer is improved. Thus, the watermark mark portion is formed by partitioning due to the difference in transmittance between the surface portion where the oil-based ink is present and the surface portion not printed and coated. On the other hand, a border pattern layer having a light-shielding property is formed on the border edge of the pattern of the watermark mark portion, and the periphery of the pattern is clearly defined, so that the pattern shape becomes clear. Further, even if the watermark pattern layer printed with the oil-based ink diffuses and bleeds due to aging, the border pattern layer maintains the border of the pattern shape and does not blur the watermark pattern.

The border pattern layer may be printed on the same surface as the watermark pattern layer, or may be printed on the other surface.

Further, the second means of the present invention comprises a light-shielding pattern layer printed on a surface of a base paper having a cutting pattern consisting of an ink-free portion and printed with a paper-color light-shielding ink; And a watermark layer printed with an oil-based ink so as to cover the cutting pattern, and a watermark mark portion formed by the cutting pattern and the watermark layer. .

[0011] Even in such a configuration, even if the watermark pattern layer printed with the oil-based ink is diffused and bleeds due to aging, the punching pattern defines the periphery of the watermark mark portion. State is maintained, and the watermark pattern is not blurred. Further, since the light-shielding pattern layer occupies the surrounding area including the watermark mark, the border is not noticeable unlike the configuration in which the watermark mark is bordered. Furthermore, since the watermark layer is printed with oil-based ink so as to cover the punched pattern, unlike the pattern printing, solid patch printing may be used, so the printing process is simple, and a plate with a complicated pattern is used. There is no need to form or create patterns. The watermark layer may be formed so as to substantially coincide with the cut pattern. In this case, since there is no overlapping portion between the watermark layer and the light-shielding pattern layer, the design is high when watermarking is performed.

Here, as the light-shielding ink of paper color used for each means, an ultraviolet-curable paper-color ink is proposed. The UV-curable paper-colored ink is a UV-curable white ink, which is obtained by mixing a pigment similar to the color of the base paper with the UV-curable ink as a base material to obtain a paper color. The UV-curable ink layer is formed by mixing a prepolymer such as an acrylic resin, and a monomer and a polymerization initiator, and is cured by irradiating ultraviolet rays. There is. Therefore, it is most suitable as an ink when used in a printing machine that prints at a high temperature such as a laser printer.

As a white pigment of an ultraviolet curable white ink (paper color ink), titanium oxide (T
When iO ₂ ) is used, the light-shielding ability is improved due to its reflection characteristics, and therefore, the transmittance of the surface portion where the light-shielding ink is present is greatly reduced as compared with the surface portion where the light-shielding ink is not printed and applied, and the watermarks In this state, the border of the pattern of the watermark mark portion becomes clearer. Moreover, when the paper is not transparent, the white ink is difficult to visually recognize and has excellent concealing properties.

As described above, the surface portion on which the light-shielding ink composed of the ultraviolet-curable paper color ink is applied by printing has a lower light transmittance than the surface portion on which the ink is not applied by printing. Therefore, by looking through the paper, both sides can be clearly defined depending on the presence or absence of the light-shielding ink. For this reason, when the watermark mark is sectioned using the light-shielding ink, it is clearly distinguished from a watermark pattern layer or a watermark layer made of oil-based ink having a watermark effect.

On the other hand, unless the watermark is viewed through the paper, the watermark mark is formed by halftone printing or repeated printing of the same figure so that the watermark mark is not conspicuous on the paper. A decorative pattern to conceal can be formed. When the light-shielding ink is formed on the surface of the paper, the formation of the light-shielding ink and the formation of the decorative pattern may be sequentially performed on the same surface, thereby simplifying the formation.

The UV-curable paper color ink may be prepared by mixing the UV-curable ink with an adjusting pigment for approximating the color tone of the base paper. As a result, even when the paper is colored, the light-shielding ink is inconspicuous in a normal state. In this case, a conditioning pigment can be mixed with the titanium oxide. Here, the watermark mark portion may be scattered on the paper as an identification mark, but a large number of the watermark mark portions may be continuously formed on the paper, or may be mixed with other watermark mark portions to form a watermark pattern as a whole. It may be formed.

[0017]

1 to 3 show a form sheet 1 having a watermark mark section 3 according to the present invention. The watermark mark portion 3 is formed by printing a watermark pattern layer 4 on the back surface of the base paper 2 with oil-based ink, and printing a border pattern layer 5 along the periphery of the watermark pattern layer 4 on the back surface. The border pattern 5 is formed by printing and applying a light-shielding ink made of an ultraviolet-curable white ink (paper color ink).

The UV-curable white ink is obtained by mixing a white pigment with a UV-curable ink as a base material. This UV-curable ink is a mixture of a prepolymer and monomer such as an acrylic resin, a monomer, a polymerization initiator, and a white pigment. is there.
Therefore, the printing process is easier and the mass productivity is higher than in the case where the conventional oxidation polymerization type ink is used. Further, ink stains do not transfer through the feed roller, and the finish is good.

As described above, since the ultraviolet curable white ink has fast drying properties and heat resistance, it is most suitable as an ink for printing means to which high heat is rapidly applied and heat resistance is required, such as a laser printer. . Therefore, when this white ink is used, the border pattern layer 5 can be uniformly printed along the periphery of the watermark pattern layer 4 on the same surface.

Titanium oxide is used as a white pigment in the ultraviolet light curable white ink of the light-shielding ink, and the action of the titanium oxide effectively blocks light. This produces a large transmission difference.
Thus, when the paper is viewed through the paper, the watermark mark portion 3 is clearly partitioned from the surroundings due to the difference in transmittance between the surface portion on which the light-shielding ink 5 is printed and applied and the surface portion on which the light-shielding ink 5 is not applied. Can be done.

Here, as shown in FIGS. 1 and 3, a decorative pattern for concealment is formed on the surface of the base paper 2 so as to cover the watermark mark portion 3 by halftone printing or repeated printing of the same figure. 7 may be formed. With the decorative pattern 7, the watermark mark portion 3 is more effectively hidden, and unless the paper 1 is seen through, the watermark mark portion 3 is hidden.
Cannot be confirmed on the paper 1, and various information 8 printed on the watermarked form paper 1 can be clearly read without being visually obstructed by the watermark mark portion 3. That is, the decorative pattern 7 is
Has a concealing action that reinforces the concealment ability of the

On the other hand, a watermark pattern layer 4 is
When the border pattern layer 5 is formed by printing the border pattern layer 5 on the surface of the base paper 1, the formation of the border pattern layer 5 and the formation of the decorative pattern 7 may be sequentially printed on the surface. It's easy. Even if the decorative pattern 7 is omitted, the watermark mark 3 is formed by partitioning the watermark mark 3 with the border pattern layer 5 made of UV-curable white ink. However, it is difficult to confirm that the sheet 1 is not made transparent.

In such a configuration, on the surface of the form sheet 1 with the watermark, on the decorative pattern 7 or on the watermark mark 3
The writing information 8 is printed directly on the upper surface by a laser printer or the like.

Further, in the watermark mark portion 3 having such a configuration, the oily ink seeps into the base paper, and the light transmittance of the surface portion where the watermark pattern layer 4 is present is improved. As a result, the watermark mark portion 3 is sectioned by the difference in transmittance between the surface portion where the oil-based ink is present and the blank surface portion 6 where no printing is applied.

On the other hand, the border of the pattern of the watermark mark portion 3 is formed with the light-shielding edging pattern layer 5, so that the periphery of the pattern is clear and the pattern shape becomes clear. Further, even if the watermark pattern layer 4 printed with the oil-based ink is diffused and bleeds due to a change over time, the border of the pattern shape is maintained by the border pattern layer 5, and the watermark pattern is not blurred.

FIGS. 4 to 6 show a form sheet 10 with a watermark having a watermark mark portion 11 according to another configuration of the present invention. Here, a light-shielding pattern layer 12 having a cut pattern 13 printed on the surface of the base paper 1 with light-shielding ink of paper color, and an oil-based ink on the back of the base paper so as to cover the cut pattern 13 The printed watermark layer 14 is formed by printing.
The watermark mark portion 11 is formed by filling the lower surface 4 from the lower surface.

In such a configuration, the pattern of the watermark mark portion 11 is defined by the cutout pattern 13 of the light-shielding pattern layer 12 made of paper-colored light-shielding ink. Therefore, the cutting pattern 1
Even if the watermark layer 14 made of oil-based ink that covers the back surface 3 of the mold 3 spreads over time, since the border of the cut pattern 13 is formed of the light-shielding ink, it does not spread or bleed. The pattern of the chapter 11 is kept clear and does not blur. The light-shielding pattern layer 12
Occupies the surrounding area of the watermark mark 11, the watermark mark 11 can be made inconspicuous as compared with a configuration in which only the border of the watermark mark 11 is bordered.

Further, the watermark layer 14 is made of the cut pattern 13.
Since it is printed with oil-based ink so as to cover, unlike pattern printing, solid patch printing may be used.
The printing process is simple, and there is no need to form a plate with a complicated pattern or to create a pattern. In addition, since the watermark layer 14 that is easily reflected by the oil-based ink is formed on the back surface of the base paper 2, the watermark mark portion 11 is not exposed due to light reflected on the surface of the base paper 2. The watermark mark section 11 is confirmed only by looking, and therefore, there is an advantage that the watermark mark section 3 is further inconspicuous.

As described above, the decoration pattern 7 can be formed, and the writing information 8 can be printed directly on the decoration pattern 7 or the watermark mark 11 with a laser printer or the like. It is.

FIGS. 7 and 8 show a form sheet 10 'with a watermark provided with a watermark mark portion 11 according to a modification of the second embodiment. 14 is formed. In such a configuration, there is no overlapping portion between the light-shielding pattern layer 12 and the watermark layer 14 when watermarking is performed, and thus there is an advantage that the design is improved.

Thus, in each embodiment, the form sheets 1,
When seeing through 10, 10 ', light is transmitted through the watermark pattern layer 4 and the watermark layer 14, and the watermark mark portion 3 can be visually and clearly distinguished by the contrast.

The watermark marks 3 and 11 are used as authentication marks, and as described above,
By seeing through the watermarked form sheets 1, 10, and 10 'through the watermark, the watermark mark portion 3 is confirmed, and it is determined whether or not the paper is a genuine exclusive paper based on the presence or absence of the watermark mark portion 3. For this reason, various writing information 8
Is printed and used as various certificates, securities, etc.
By confirming whether the watermarked form sheet 1 is genuine by the watermark mark section 3, the authenticity of the certificate or the like can be determined. Further, in each configuration, as described above, since the border pattern layer 5 and the light-shielding pattern layer 12 are white, they are assimilated with white of the base paper and do not appear.

On the other hand, when the paper is colored, an adjusting pigment for approximating the color tone of the base paper 2 is mixed with the ultraviolet curable ink which is the material of the border pattern layer 5 and the light shielding pattern layer 12. An ultraviolet curable paper color ink may be prepared.
Thereby, even when the paper is colored, the light-shielding ink 5 is not conspicuous in a normal state. In this case, the adjusting pigment can be mixed together with the titanium oxide, whereby the shielding effect of the titanium oxide can be maintained.

[0034]

According to the first aspect of the present invention, the form sheet with watermark is printed on the paper surface of the base paper with a watermark pattern layer printed with oil-based ink and a paper color light-shielding ink along the periphery of the watermark pattern. The watermark mark layer is composed of the border pattern layer and the watermark pattern layer printed with the oil-based ink due to aging. Since the periphery is defined, the pattern shape is clearly maintained, the watermark pattern is not blurred, and there is no change with time.

Further, the watermarked form paper according to the second means of the present invention comprises a light-shielding pattern layer printed on a surface of the base paper, having a cut-out pattern composed of an ink-free portion, and printed with a paper-color light-shielding ink; On the other surface, a watermark layer printed with oil-based ink is formed so as to cover the punching pattern, so that the punching pattern and the watermark layer constitute a watermark mark portion. Similarly to the first means, even if the watermark pattern layer printed with the oil-based ink is diffused and bleeds, since the blank pattern defines the periphery of the watermark mark portion, a clear state is maintained, Since the watermark pattern is not blurred and the light-shielding pattern layer occupies the surrounding area including the watermark mark portion, the border is not noticeable unlike the configuration in which the watermark mark portion is bordered. Furthermore, since the watermark layer is printed with oil-based ink so as to cover the cut pattern, unlike the pattern printing, solid patch printing is also possible. In this case, the printing process is simple and complicated There is no need to form a plate with a mark or create a pattern.

Further, when an ultraviolet-curable paper-color ink is used as the light-shielding ink, the ultraviolet-curable paper-color ink is quick-drying and excellent in heat resistance, so that printing of the light-shielding ink is easy. It is suitable for a printing machine such as a laser printer that prints at a high temperature.

[Brief description of the drawings]

FIG. 1 is a plan view of a form sheet 1 with a watermark according to the present invention.

FIG. 2 is a back view of the watermarked form sheet 1 according to the first embodiment;

FIG. 3 is a cross-sectional view of the form sheet 1 with a watermark shown crossing the watermark mark section 3;

FIG. 4 is a plan view of a form sheet 10 with a watermark according to the present invention.

FIG. 5 is a back view of the form sheet 10 with the watermark.

FIG. 6 is a cross-sectional view of the form sheet 10 with a watermark shown crossing the watermark mark section 11;

FIG. 7 is a form sheet 1 with a watermark according to a modification of the present invention.
It is a top view of 0 '.

FIG. 8 is a rear view of the watermarked form paper 10 'of the above.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 watermarked form paper 2 base paper 3 watermarked mark part 4 watermarked pattern layer 5 border pattern layer 10, 10 'watermarked form paper 11 watermarked mark part 12 light-shielding pattern layer 13 cutout pattern 14 watermark layer

Claims (3)

[Claims] 1. A watermark mark section comprising a watermark pattern layer printed on a paper surface of a base paper with an oil-based ink, and a border pattern layer printed along the periphery of the watermark pattern with a paper-color light-shielding ink. Form paper with a watermark, characterized by comprising: 2. A light-shielding pattern layer which is printed with paper-color light-shielding ink and has a cut pattern formed of an ink-free portion on one surface of the base paper, and a cut pattern formed on the other surface of the base paper. A form paper with a watermark, comprising: a watermark layer printed with oil-based ink; and a watermark mark portion composed of a stamp pattern and a watermark layer. 3. The form sheet with a watermark according to claim 1, wherein the light-shielding ink is made of a UV-curable paper color ink.