JP2003136870A - Authenticity discriminating method for invisible printed matter, the invisible printed matter, and discriminator therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an authenticity discriminating method for an invisible printed matter, the uneven pattern of which can be recognized under observation by adhering a discriminator to or by irradiating white light or the like on the invisible printed matter having an uneven pattern hard to be distinguished with naked eyes, its invisible printed matter and its discriminator. SOLUTION: By bringing the surface having the parallel line pattern or dot pattern printed thereon of the discriminator (2) made of a light transmitting board printed with the parallel line pattern or dot pattern into contact with an uneven pattern provided on the base material of the invisible printed matter (1) having the uneven pattern provided on the base material by printing with at least one selected from the group consisting of an ink having the same color with that of the base material, an ink with the hue similar to that of the base material and a transparent ink and being hard to be distinguished with naked eyes, the uneven pattern is visually recognized when the region brought into contact with the discriminator is observed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a valuable printed matter which is required to prevent forgery and copying of banknotes, stock certificates, securities, passports, cards, etc. Or, it is difficult to visually recognize any uneven pattern printed from at least one of ink of similar hue and transparent ink, but the uneven pattern is observed when the discriminator is closely contacted or when observed by illuminating with white light. The present invention relates to a method for discriminating the authenticity of an invisible printed matter capable of being visually recognized, an invisible printed matter thereof, and a discriminating tool therefor.

[0002]

2. Description of the Related Art Valuable printed matter such as banknotes, stock certificates, securities, pass tickets, passports, cards, etc. are required not to be forged or tampered due to their nature. As a countermeasure for this, a technique relating to a forgery-preventing printed matter in which a transparent ink in which a fluorescent agent is added to a substrate is printed is used. A printed matter printed with a transparent ink to which a fluorescent agent is added is usually invisible to the naked eye under visible light, but when this printed matter is irradiated with energy rays such as ultraviolet rays, a transparent ink added with a fluorescent agent is used. It is possible to make a true / false decision by fluorescently revealing the information printed by.

Further, a method of imparting unevenness to paper by using intaglio printing or the like for banknotes has already been used as an anti-counterfeiting technique. Is it intaglio printed by the touch of a person when touched by a hand? , It is possible to determine whether it is a forged one.

On the other hand, as a method of making a simple authenticity determination on a printed matter by using a discriminating tool, for example, a pattern which is deviated by a half cycle between the pattern portion and the edging portion is printed, and the edging portion is formed on the background. On the other hand, a method of performing true / false determination by causing a moire to occur by overlaying a discriminator with a pattern that interferes with the edging on a print that has a color and density that cannot be discerned visually (special feature Kaihei 10-100
529 gazette).

[0005]

As described above, the forgery prevention technique using intaglio printing or the like has already been used, and a method of recognizing the unevenness by touch by a person touching the intaglio printed portion, or a displacement meter It can be determined by a machine that uses

[0006] However, the method using a machine requires a large scale and takes a long time, so that it cannot be easily and promptly recognized, and in order for a person to touch and check the unevenness, the unevenness can be recognized. It is necessary to be able to visually confirm the location and shape. Therefore, there is a possibility that reproduction may be performed with pseudo embossing.

In view of the above, the present invention is intended to solve the above-mentioned problems, and the concavo-convex pattern is difficult to visually recognize with the naked eye, but when the discriminating tool is closely contacted and observed, white light is emitted. Since the concavo-convex pattern can be visually recognized when it is irradiated and observed, it is possible to easily make a genuine / counterfeit determination by using a discriminating tool. Even if it is difficult to identify the shape of the uneven pattern by printing a pattern different from the shape of the uneven pattern in the same area as the uneven pattern, it is possible to easily identify only the shape of the uneven pattern. The present invention proposes an authenticity determination method for an invisible printed matter, an invisible printed matter, and a discrimination tool for the invisible printed matter.

[0008]

According to the present invention, an uneven pattern is provided on a base material, and the uneven pattern is printed with at least one of an ink or a transparent ink having the same or similar hue as that of the base material. In the invisible printed matter that is difficult to identify with a discriminating tool composed of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed, the concavo-convex pattern provided on the base material is used to form a line pattern or a mesh of the discriminating tool. The authenticity determination method for an invisible printed matter is characterized in that the uneven pattern is visually recognized when the area on which the determination tool is in close contact is observed by bringing the surface on which the dot pattern is printed into close contact.

Further, according to the present invention, a concavo-convex pattern is provided on a base material, and the concavo-convex pattern is difficult to discern with the naked eye printed from at least one of an ink or a transparent ink having the same or similar hue as the base material. Using a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed on an invisible printed matter, the concavo-convex pattern provided on the base material is printed with the line pattern or the halftone dot pattern of the discriminating tool. The area where the discriminator is in close contact with the surface of the invisible printed matter, when observing by irradiating white light, the concavo-convex pattern is visually recognized. Is.

Further, in the present invention, an uneven pattern is provided on a substrate, and the uneven pattern is printed from at least one of an ink or a transparent ink having the same color as or similar to that of the substrate,
On the invisible printed matter that has a concealing layer formed by pattern printing with a colored ink on the uneven pattern and is difficult to identify with the naked eye, a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed is used. The uneven pattern provided on the discriminating tool is brought into close contact with the surface on which the line pattern or halftone dot pattern of the discriminating tool is printed. The method for determining the authenticity of an invisible printed matter is characterized in that the uneven pattern is visually recognized when observed by irradiating the light.

In the present invention, a concavo-convex pattern is provided on a substrate, and the concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as the substrate,
Pattern printing with colored fluorescent ink on the concavo-convex pattern, it is difficult for the naked eye to have a hiding layer printed with a solid pattern with the colored fluorescent ink and a colorless fluorescent ink that emits in the same color or a similar hue when irradiated with energy rays. Using a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed on an invisible printed matter, the concavo-convex pattern provided on the base material is printed with the line pattern or the halftone dot pattern of the discriminating tool. The area where the discriminator is in close contact, when observing by irradiating an energy ray, the concavo-convex pattern is visually recognized. Is.

Further, the concavo-convex pattern of the present invention is a method for discriminating authenticity of an invisible printed matter, which is characterized in that it is a character, a symbol, or a pattern.

The line pattern of the discriminating tool of the present invention is 1
It is a method for discriminating authenticity of an invisible printed matter, which is a line pattern of 150 to 300 lines per inch.

The halftone dot pattern of the discriminating tool of the present invention has a screen ruling in the range of 150 to 300 lines and a halftone dot ratio of 30% to 70%. Is the way.

Further, according to the present invention, a concavo-convex pattern is provided on a base material, and the concavo-convex pattern is difficult to be discerned by the naked eye printed from at least one of an ink or a transparent ink having the same or similar hue as the base material. An invisible printed matter, in which a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed is closely contacted, and the discriminant pattern provided on the base material has a line pattern of the discriminating tool. Or, by closely adhering to the surface on which the halftone dot pattern is printed, when observing the area in which the discrimination tool is in close contact, or when observing by irradiating with white light, it is possible that the uneven pattern is visually recognized. It is a characteristic invisible printed matter.

Further, according to the present invention, a concavo-convex pattern is provided on a base material, and the concavo-convex pattern is difficult to be discerned by naked eyes printed from at least one of an ink or a transparent ink having the same or similar hue as the base material. An invisible printed matter that discriminates an invisible printed matter by closely adhering a discriminating tool made of a light-transmitting substrate on which a line pattern or a halftone dot pattern is printed, and concealed by pattern printing with a colored ink on an uneven pattern provided on the base material. Having a layer, in the uneven pattern having the concealing layer, the line pattern or halftone dot pattern of the discriminator is brought into close contact with the surface, and the discriminator is adhered to the area.
The invisible printed material is characterized in that the uneven pattern is visually recognized when observed by irradiating light having a hue similar to or similar to that of the colored ink.

Further, according to the present invention, a concavo-convex pattern is provided on the base material, and the concavo-convex pattern is difficult to be discerned by the naked eye printed from at least one of an ink or a transparent ink having the same or similar hue as the base material. An invisible printed matter, in which a discriminator made of a light-transmitting substrate printed with a line pattern or a halftone dot pattern is closely contacted to discriminate, a pattern printing with a colored fluorescent ink on an uneven pattern provided on the base material is performed. The colored fluorescent ink has a concealing layer printed with a solid pattern of a colorless fluorescent ink that emits in the same color or a hue similar to that of the colored fluorescent ink upon irradiation with energy rays, and the concavo-convex pattern having the concealing layer has a parallel line of the discriminating tool. When a pattern or a halftone dot pattern is closely contacted with the surface, the discriminator is closely contacted with the region, when observing by irradiating an energy ray,
An invisible printed material, wherein the uneven pattern is visually recognized.

Further, the concavo-convex pattern of the present invention is an invisible printed material characterized by being characters, symbols and pictures.

Further, it is composed of a light-transmissive substrate on which the parallel line pattern or halftone dot pattern of the present invention is printed, and the surface of the substrate on which the parallel line pattern or halftone dot pattern is printed is invisible on which any irregular pattern is formed. In a discriminating tool that discriminates the invisible printed matter by closely contacting with the uneven pattern of the printed matter, the uneven pattern is printed by at least one of an ink or a transparent ink having the same or similar hue as that of the base material of the invisible printed matter to the naked eye. It is difficult to recognize, and the surface of the light transmissive substrate on which the line pattern or the halftone dot pattern is printed is in close contact with the concave-convex pattern, and the area where the discriminating tool is in close contact is
It is an invisible printed matter discriminating tool characterized in that the uneven pattern is visually observed when observed or when illuminated with white light.

Further, the present invention comprises a light-transmissive substrate on which a line pattern or halftone dot pattern is printed, and the surface of the substrate on which the line pattern or halftone dot pattern is printed is provided with an arbitrary uneven pattern. In contact with the uneven pattern of the invisible printed matter, a discriminating tool for discriminating the invisible printed matter,
The concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as that of the base material of the invisible printed matter, and has a concealing layer formed by pattern printing with a colored ink on the concavo-convex pattern, which is difficult to recognize with the naked eye. The surface on which the line pattern or the halftone dot pattern of the light-transmitting substrate is printed is in close contact with the uneven pattern, and in the region where the discriminating tool is in close contact, the same color as or similar to the colored ink. It is a discriminating tool for an invisible printed matter, characterized in that the uneven pattern is visually recognized when irradiated with light and observed.

Further, the present invention comprises a light-transmissive substrate on which a line pattern or halftone dot pattern is printed, and the surface of the substrate on which the line pattern or halftone dot pattern is printed is provided with an arbitrary uneven pattern. In contact with the uneven pattern of the invisible printed matter, a discriminating tool for discriminating the invisible printed matter,
The concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as that of the base material of the invisible printed matter, and the concavo-convex pattern is printed with a colored fluorescent ink, and the colored fluorescent ink and energy rays are irradiated. Sometimes has a concealing layer printed a solid pattern with a colorless fluorescent ink that emits in the same color or a similar hue, it is difficult to recognize with the naked eye, the surface of the light-transmitting substrate printed with a line pattern or halftone dot pattern is The invisible printed matter discriminating tool is characterized in that the concavo-convex pattern is visually recognized when the region which is in close contact with the uneven pattern and in which the discriminating tool is in close contact is irradiated with an energy ray and observed.

Further, the parallel line pattern of the present invention is a tool for discriminating invisible printed matter, which is 150 to 300 parallel line patterns per inch.

The halftone dot pattern of the present invention has a screen frequency in the range of 150 to 300 and a halftone dot ratio of 30%.
It is an invisible printed matter discriminating tool characterized in that it is ˜70%.

[0024]

1 shows the basic principle of the present invention.
When the discriminating tool 2 is brought into close contact with the base material 1 with an uneven pattern produced by intaglio printing, screen printing, etc., and light is emitted from the oblique direction from the illumination 3, the pattern shadow imparted to the discriminating tool causes The uneven pattern can be visually confirmed.

As an example, as shown in FIG. 2, in the case of a base material 4 having an uneven pattern 5 of "A", the discriminating tool is provided with a linear pattern 7 as shown in FIG. If there is, a discriminating tool having a line pattern is brought into close contact with the surface having irregularities formed by the intaglio ink, as shown in FIG.
At this time, the surface of the discriminating tool to which the line pattern is applied needs to be brought into close contact with the intaglio ink. By irradiating the light from an oblique direction, the shadow 10 due to the line pattern of the discriminating tool is generated on the unevenness of the intaglio ink. When this state is observed from above, in addition to the line pattern 8 of the discriminating tool on the uneven pattern, the shadow 10 generated on the part without unevenness is also observed.
Can be observed from the non-image area 9 of the discriminating tool, so that the uneven pattern "A" can be recognized. Even when the base material has flexibility and the base material in FIG. 4 contacts the discriminating tool, the distance between the base material and the discriminating tool is maintained in the vicinity of the intaglio ink, and as a result, it is possible to identify the uneven pattern. Is. The concavo-convex pattern can be either convex or concave. At this time,
The pattern given by the concave and the pattern given by the convex are observed as if white and black were reversed.

However, when the pattern given to the discriminating tool is a line pattern, when both the illumination direction and the observation direction are in the line direction or directly above the line, or when they are exactly the same, the generated shadow is recognized. Since the uneven pattern “A” cannot be recognized because it cannot be performed, the illumination direction and the observation direction may be arbitrary under other conditions. When the pattern given to the discriminating tool is a halftone dot pattern, the illumination direction and the observation direction may be arbitrary except the case where the illumination direction and the observation direction are exactly the same.

The light-transmissive substrate used for the discriminating tool may be made of plastic, glass, or the like. When the pattern given to the discriminating tool is the above-mentioned line pattern, the number of lines is about 150 to 300 per inch. If there are a number of, it is possible to recognize the uneven pattern. Besides, the same effect can be obtained with a halftone dot pattern. In the case of a halftone dot pattern, an uneven pattern can be recognized if the number of lines is 150 to 300. The halftone dot shape is not particularly limited, and square dots, chain dots, round dots, special halftone dots and the like can be used. Further, the parallel line shape is not particularly limited, and a parallel line, a wavy line or the like can be used. Further, each pattern to be given to the discriminating tool is required to have high opacity for generating a shadow, and if the opacity is high, white other than black is possible, and is not particularly limited. Absent.

Further, as shown in FIG. 5, by providing the printed pattern 12 on the surface on which the discriminator is brought into close contact, it is possible to improve the concealment of the concavo-convex pattern 11 observed when the discriminator is not brought into close contact. However, when the printed pattern 12 is applied using the colored ink, the discriminating tool is brought into close contact, and white light is irradiated, the visibility of the uneven pattern 11 is impaired.
By passing white light through a color filter or using a light emitting diode, light having a hue similar to or similar to that of the colored ink is emitted instead of the white light to obtain the printed pattern 12.
It is possible to prevent the visibility of the uneven pattern 11 from being deteriorated. The print pattern 12 of the present invention is not particularly limited, and a color pattern, a minute character, a solid color, or an ordinary pattern can be used. The colored ink of the present invention is not particularly limited, but when the black ink is used, the effect of the present invention cannot be obtained if the printing pattern is solid.

Further, as shown in FIG. 6, the printed pattern is made of colored fluorescent ink, and the entire surface of the concavo-convex pattern is made of colorless fluorescent ink that develops a hue similar to or similar to the colored fluorescent ink when irradiated with energy rays such as ultraviolet rays. By forming the solid pattern 17, it is possible to make only the concavo-convex pattern visible by making the pattern of the colored fluorescent ink invisible when irradiated with energy rays such as ultraviolet rays. It should be noted that the colored fluorescent ink may use a plurality of colors in the same region as long as they develop the same color or a similar hue upon irradiation with ultraviolet rays or the like.

The concavo-convex pattern of the present invention may be formed by a printing method such as intaglio printing or screen printing using an ink having the same color as the substrate, an ink having a hue similar to that of the substrate, or a transparent ink. It may be added and used. Further, if the height of the unevenness is about 5 μm or more, the discrimination is possible. Further, the base material may have a smoothness that does not hinder the unevenness provided. Also, the uneven pattern is
The authenticity determination effect is improved by using characters, symbols, or patterns.

As the base material of the present invention, papers, films, plastics, metals and the like can be used.

[0032]

The present invention will be described in more detail below with reference to examples, but the contents of the present invention are not limited to the scope of these examples.

Example 1 In order to impart irregularities to the substrate, an intaglio ink of the same color as the substrate was prepared and intaglio printing was performed to impart a convex pattern. A glass plate having 150 lines of parallel lines printed on one side was used as a discriminating tool. The surface with the parallel lines of the discriminator was brought into close contact with the place where the convex was provided, and white light (a flashlight was used in this example) was applied to the discriminator and the base material from an oblique direction. By observing, a convex pattern could be confirmed. Also, a convex pattern could be confirmed by observing by irradiating white light from the front. Although a convex pattern is used in this embodiment, a similar effect can be obtained with a concave pattern.

(Example 2) In order to impart irregularities to a substrate, a stencil ink of the same color as that of the substrate was prepared, and stencil printing was performed to impart a convex pattern. In order to reduce the visibility of the convex pattern when the discriminator is not in close contact,
As overlapping with the convex pattern, it is red when observed under visible light, and by offset printing pattern printing using a colored fluorescent ink that emits red light when observed under ultraviolet light,
Further, a solid pattern was printed by offset printing so as to cover the entire surface in the same region with a colorless fluorescent ink that is colorless and transparent under visible light and that emits red light of the same color as the colored fluorescent ink when observed under ultraviolet light. A glass plate having 150 lines of parallel lines printed on one side was used as a discriminating tool. Place the surface with the parallel lines of the discriminator in close contact with the place where the convex pattern is applied,
By irradiating the discriminator and the convex pattern with ultraviolet light from the front direction and observing the pattern, it was difficult to visually recognize the pattern formed by the colored fluorescent printing, and therefore only the convex pattern was confirmed.

(Example 3) In order to impart irregularities to a substrate, a transparent intaglio ink was prepared and intaglio printing was performed to impart a convex pattern. In order to reduce the visibility of the convex pattern in the state where the discriminating tool is not brought into close contact, the pattern was printed with a normal colored ink so as to overlap the convex pattern. A glass plate having 150 lines of parallel lines printed on one side was used as a discriminating tool. The surface with the parallel lines of the discriminating tool is brought into close contact with the place where the convex pattern is provided, and the same color as the colored ink used to print the pattern from the diagonal direction with respect to the discriminating tool and the convex pattern. By irradiating with light through a filter and observing it, it was difficult to visually recognize the pattern printed with the colored ink, so only the convex pattern was confirmed.

The above description is based on the embodiment of the present invention. However, the present invention is not limited to this embodiment, and various other modifications are possible within the scope of the technical idea described in the claims. Various embodiments are possible.

[0037]

EFFECTS OF THE INVENTION It is difficult to visually recognize the uneven pattern with the naked eye, but the uneven pattern can be visually recognized when observed with the discriminator in close contact with it or when irradiated with white light or the like, and a person who knows where the uneven pattern is formed. , It is possible to easily and surely make a true / false decision by using a simple discriminating tool, and a person who does not know where the uneven pattern is formed does not know where the uneven pattern is formed. Duplicate becomes difficult.

Further, since it is sufficient for the discriminating tool to be about the size of the concavo-convex pattern to be recognized, there is no need for an installation space or the like for the discriminating device, and it is possible to have a size that can be carried. Further, the shape of the uneven pattern may be any shape as long as the pattern of the discriminating tool, the illumination condition, and the observation direction are constant, and it is not necessary to strictly superimpose the positions even when superposing with the discriminating tool. Therefore, it can be used as a very easy discrimination method.

[0039]

[Brief description of drawings]

FIG. 1 is a diagram showing a basic principle of the present invention.

FIG. 2 is a diagram showing an uneven pattern in the present invention.

FIG. 3 is a diagram showing an example of a discriminating tool of the present invention.

FIG. 4 is a diagram showing a basic principle of the present invention.

FIG. 5 is a diagram showing a concealing pattern with colored ink in the present invention.

FIG. 6 is a view showing a concealing pattern using the fluorescent ink in the present invention.

[Explanation of symbols]

1 Base material with uneven pattern (invisible printed matter) 2 discriminating tools 3 lighting 4 Base material with uneven pattern (invisible printed matter) 5 uneven pattern 6 Light-transmissive substrate for discriminating tool 7 Line-shaped pattern given to the discriminating tool 8 Line-shaped pattern given to the discriminating tool 9 Base material part of the base material with uneven pattern (non-image area) 10 Shadows generated by the discriminator 11 uneven pattern 12 Concealment pattern with colored ink 13 Base material with uneven pattern (invisible printed matter) 14 uneven pattern 15 Concealment pattern with colored fluorescent ink 16 Base material with uneven pattern (invisible printed matter) 17 Solid pattern with colorless fluorescent ink

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) // B41M 3/14 B41M 3/14 F term (reference) 2C005 HA01 HB02 HB10 HB13 JA09 JB15 JB25 KA40 KA48 LB02 LB11 2H113 AA01 AA04 AA06 BA27 BC13 BC14 CA32 CA39 CA42 CA44 EA01 EA15 FA42 3E041 AA01 AA02 BA11 BB01 BB05 BB10

Claims (16)

[Claims] 1. An uneven pattern is provided on a substrate, and the uneven pattern is an invisible printed matter that is difficult to identify with the naked eye, printed from at least one of an ink or a transparent ink having the same or similar hue as the substrate, A surface on which the parallel line pattern or the halftone dot pattern of the distinguishing tool is printed on the uneven pattern provided on the base material by using the distinguishing tool composed of a light-transmissive substrate on which the parallel line pattern or the halftone dot pattern is printed. A method for discriminating the authenticity of an invisible printed matter, wherein the uneven pattern is visually recognized when the area where the discriminating tool is in close contact is observed by closely adhering to and. 2. An uneven pattern is provided on a base material, and the uneven pattern is an invisible printed matter that is difficult to identify with the naked eye, printed from at least one of an ink or a transparent ink having the same color as or similar to that of the base material, A surface on which the parallel line pattern or the halftone dot pattern of the distinguishing tool is printed on the uneven pattern provided on the base material by using the distinguishing tool composed of a light-transmissive substrate on which the parallel line pattern or the halftone dot pattern is printed. And a region where the discriminator is in close contact, and when the white light is radiated and observed, the concavo-convex pattern is visually recognized. 3. A concavo-convex pattern is provided on a base material, and the concavo-convex pattern is printed from at least one of an ink or a transparent ink having a hue similar to or similar to that of the base material, and a pattern made of a colored ink on the concavo-convex pattern. On the invisible printed matter that has a concealing layer by printing and is difficult to identify with the naked eye, using a discriminating tool composed of a light-transmissive substrate printed with a line pattern or a halftone dot pattern, the uneven pattern provided on the base material is When the line of the discriminating tool or the surface on which the halftone dot pattern is printed is brought into close contact, and the region where the discriminating tool is in close contact is irradiated with light of the same or similar hue as the colored ink and observed. The authenticity determination method for an invisible printed matter, wherein the uneven pattern is visually recognized. 4. A concavo-convex pattern is provided on a substrate, and the concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as that of the substrate, and the concavo-convex pattern is formed by a colored fluorescent ink. Pattern printing, invisible printed matter that is hard to distinguish with the naked eye having a hidden pattern printed with a solid pattern of the colored fluorescent ink and a colorless fluorescent ink that emits a color similar to or similar to that of the colored fluorescent ink upon irradiation with energy rays, a line pattern or a mesh. Using a discriminator made of a light-transmissive substrate on which a dot pattern is printed, an uneven pattern provided on the base material is brought into close contact with the line of the discriminator or the surface on which the dot pattern is printed. The authenticity determination method for an invisible printed matter, wherein the uneven pattern is visually recognized when an area to which the determination tool is closely attached is irradiated with an energy ray and observed. 5. The authenticity discriminating method for an invisible printed matter according to claim 1, wherein the concavo-convex pattern is a character, a symbol, or a design. 6. The authenticity discrimination method for an invisible printed matter according to claim 1, 2, 3 or 4, wherein the line pattern of the discriminating tool is 150 to 300 line patterns per inch. 7. The halftone dot pattern of the discriminator has a screen ruling in the range of 150 to 300 lines and a halftone dot ratio of 30%.
The authenticity determination method for an invisible printed matter according to claim 1, 2, 3 or 4, wherein: 70%. 8. An invisible printed matter, which is printed on at least one of an ink or a transparent ink having the same color as or similar to that of the base material or a transparent ink, is provided on the base material. In an invisible printed matter in which a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed is closely contacted and discriminated, the concavo-convex pattern provided on the base material has a line pattern or a halftone dot pattern of the discriminating tool. Is invisible, characterized in that the concavo-convex pattern is visually recognized when closely observing the area where the discriminating tool is in close contact with the surface on which is printed. Printed matter. 9. An invisible printed matter, which is printed with at least one of an ink or a transparent ink having the same color as or similar to that of the base material or a transparent ink, is provided on the base material. In an invisible printed matter for discriminating by closely adhering a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed, a concealing layer formed by pattern printing with colored ink is provided on the uneven pattern provided on the base material. The uneven pattern having the concealing layer is brought into close contact with the surface of the discriminating tool on which a line pattern or a halftone dot pattern is printed, and in the region where the discriminating tool is adhered, the same color as the colored ink or The invisible printed material, wherein the uneven pattern is visually recognized when irradiated with light having an approximate hue and observed. 10. An invisible printed matter, which is printed with at least one of an ink or a transparent ink having the same color as or similar to that of the base material, or a transparent ink, is provided on the base material, and the uneven pattern is provided. In an invisible printed matter for discriminating by closely adhering a discriminating tool made of a light-transmissive substrate on which a line pattern or a halftone dot pattern is printed, pattern printing with colored fluorescent ink on the uneven pattern provided on the substrate, and the colored fluorescent Ink and energy ray irradiation has a concealing layer printed with a solid pattern of colorless fluorescent ink that emits in the same color or a similar hue, the uneven pattern having the concealing layer, the line pattern or halftone dots of the discriminating tool. When the surface on which the pattern is printed is brought into close contact, and the region where the discrimination tool is brought into close contact with the surface is irradiated with energy rays and observed, the uneven pattern is visually recognized. Invisible printed matter and butterflies. 11. The invisible printed matter according to claim 8, 9 or 10, wherein the uneven pattern is a character, a symbol, or a design. 12. An invisible printed matter comprising a light-transmissive substrate on which a line pattern or halftone dot pattern is printed, and the surface on which the line pattern or halftone dot pattern is printed of the invisible printed matter on which an irregular pattern is formed. In a discriminating tool that discriminates the invisible printed matter by closely contacting with the concavo-convex pattern, the concavo-convex pattern is printed from at least one of an ink or a transparent ink having a hue similar to or similar to that of the base material of the invisible printed matter and is difficult to be recognized by the naked eye. The surface on which the line pattern or the halftone dot pattern of the light-transmissive substrate is printed is closely attached to the uneven pattern, and the region to which the discriminating tool is closely attached is observed or irradiated with white light. A tool for discriminating invisible printed matter, wherein the uneven pattern is visually recognized when observed. 13. An invisible printed matter comprising a light-transmissive substrate on which a line pattern or halftone dot pattern is printed, and the surface on which the line pattern or halftone dot pattern is printed of the invisible printed matter on which an irregular pattern is formed. In a discriminating tool that discriminates the invisible printed matter by closely contacting with the concavo-convex pattern, the concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as that of the base material of the invisible printed matter, and on the concavo-convex pattern. Has a concealing layer by pattern printing with a colored ink, is difficult to recognize with the naked eye, the surface of the light-transmissive substrate on which the line pattern or halftone dot pattern is printed is closely attached to the uneven pattern, The invisible printing, wherein the uneven pattern is visually recognized when observed by irradiating light in the same color as the colored ink or a similar color to the area where Of discrimination tool. 14. An invisible printed matter comprising a light-transmissive substrate on which a line pattern or halftone dot pattern is printed, and the surface of the substrate on which the line pattern or halftone dot pattern is printed, having an indented pattern formed thereon. In a discriminating tool that discriminates the invisible printed matter by closely contacting with the concavo-convex pattern, the concavo-convex pattern is printed from at least one of an ink or a transparent ink having the same or similar hue as that of the base material of the invisible printed matter, and on the concavo-convex pattern. In the pattern printing with a colored fluorescent ink, the colored fluorescent ink and a concealing layer printed with a solid pattern with a colorless fluorescent ink that emits in the same color or a similar hue when irradiated with energy rays are difficult to recognize with the naked eye, The surface of the light-transmissive substrate on which the parallel line pattern or the halftone dot pattern is printed is brought into close contact with the concave-convex pattern, and the area where the discriminating tool is brought into close contact When viewed by irradiating ghee line, discrimination tool invisible printed matter, characterized in that said uneven pattern is visible. 15. The line pattern has one per inch.
The discriminating tool for invisible printed matter according to claim 12, 13 or 14, wherein the discriminating pattern has 50 to 300 parallel lines. 16. The halftone dot pattern has a screen frequency in the range of 150 to 300 and a halftone dot ratio of 30% to 70.
%, The invisible printed matter discriminating tool according to claim 12, 13 or 14.