JPH11334195A - Printed matter, confirming implement and method for confirming - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed matter having a concealing pattern without identifying the pattern by preventing a forgery. SOLUTION: In the printed matter, a concealing pattern print layer 17 filled with a camouflage pattern is printed on a base material 15. In the layer 17, the concealing pattern and a background are constituted by halftone dots having the same halftone density or parallel lines and further have the camouflage pattern. Even when the printed matter is visually observed, the concealing pattern cannot be identified according to a camouflage character. When the confirming implement is placed on the printed matter, a moire pattern is generated. Even when the implement is placed on a copy of the matter, the moire pattern is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a printed matter, a confirmation tool, and a confirmation method.

[0002]

2. Description of the Related Art Conventionally, in order to suppress counterfeit products obtained by copying a cash voucher or the like with a copying machine, an area constituted by halftone dots having a size exceeding the resolution of the copying machine is provided in a printed matter. A copy check method has been used in which a forgery can be identified by using a computer. However, due to technological advances in color copiers,
As the resolution of a color copying machine increases, it is difficult to sufficiently increase the copy checking effect in a system using large halftone dots exceeding the resolution of the copying machine.

[0003] Therefore, the present applicant creates a printed matter in which a hidden pattern is printed using a linear pattern, and in the case of a copy of the printed matter, the hidden pattern does not appear even if a transparent confirmation tool is put on the printed matter. A patent (Japanese Patent Application No. 8-2577961) relating to a method of discriminating a copy to be distinguished has already been filed.

[0004]

However, if the hidden pattern is provided on a blank sheet of paper without any pattern, or is provided on a portion where the pattern does not change much, it is necessary to pay attention to the hidden pattern. Sometimes it turned out to be.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a printed matter, a checking tool, and a checking method which can prevent forgery and do not know that a hidden pattern is contained. Is to do.

[0006]

Means for Solving the Problems In order to achieve the above object, a first invention is a printed matter characterized by providing a hidden pattern printing layer containing a camouflage pattern on a base material. A second invention is a confirmation tool characterized by having a pattern that interferes with a hidden pattern print layer of a printed matter. A third invention is a confirmation method characterized by superimposing a printed matter and a checking tool, and confirming that the printed matter is an original printed matter based on the presence or absence of a moiré pattern.

[0007]

Embodiments of the present invention will be described below. FIG. 1 is an explanatory diagram of the principle of the present embodiment.
When the printed matter 1 is viewed by itself, a camouflage pattern is displayed, and it is not known that there is a hidden pattern. When the checking tool 3 is placed on the printed material 1, a moire pattern is generated. Further, even if the confirmation tool 3 is placed on the copy in place of the print 1, no moiré pattern occurs. As described above, whether or not the printed matter is an original printed matter or a copied matter is confirmed based on the presence or absence of the occurrence of the moiré pattern.

FIG. 2 is a plan view of the print 1. The printed matter 1 has the camouflage character 30 and the confirmation area 5 printed thereon. However, even if it is visually observed, the camouflage character 30 (“DNP”) is printed, so that there is no confirmation area 5. I do not understand.

FIG. 3 shows a cross section of the printed material 1 cut along the line AA in FIG. The printed matter 1 is obtained by printing a hidden pattern printing layer 17 containing a camouflage pattern on a base material 15 such as paper or film by using the same plate.

FIG. 4 is a diagram for explaining a method of making a hidden pattern plate for producing a printed matter 1. As shown in FIG. When printing is performed using this hidden pattern plate, a printed matter 1 is obtained.

[0011] As shown in FIG.
The film 33 and the film 35 are disposed thereon, and the unexposed film 31 is exposed by irradiating ultraviolet rays from above in the same manner as in a normal plate making method.

The film 33 is a negative film (a plate in which white / transparent and black are inverted) on which a hidden pattern and a background are formed. See Figure 7 for hidden patterns and backgrounds.
It is composed of halftone dots or lines having the same halftone density described later in FIG. The film 35 is a positive film (a plate in which white / transparent and black are not reversed) in which camouflage patterns (“DNP” patterns) are continuously arranged.

The film 33 and the film 35 may be arranged in reverse. However, considering the line gain or dot gain of halftone dots, the unexposed film 31 and the film 33 which are photosensitive materials are considered.
FIG. 4 in which is adhered to the film surface is more desirable. The exposed film 31 is developed and dried to obtain a hidden pattern plate.

When printing is performed using the hidden pattern plate, a printed matter 1 is obtained. As the camouflage pattern, various patterns such as a regularly repeated regular pattern and an irregular geometric pattern can be used.
FIG. 5 shows the printed matter 1 on which a regularly repeated regular pattern is printed, and FIG. 6 shows the printed matter 1 on which an irregular pattern is printed.

The camouflage pattern breaks the hidden pattern instead of hindering the visual appearance,
This also reduces the effect of checking the moiré pattern using the checking tool 3, that is, the moiré effect.

Therefore, if the camouflage effect is prioritized, the occupied area ratio of the camouflage pattern may be increased, and if the confirmation effect is prioritized, the occupied area ratio may be reduced. Specifically, the occupied area ratio is at most 90% or less,
Preferably, the occupied area ratio is 50% or less. Here, the occupied area ratio is, for example, a ratio occupied by the camouflage pattern per 1 cm 2 of the printed matter 1.

FIG. 7 is an enlarged view of the confirmation area 5 of FIG. The confirmation area 5 has a confirmation pattern part 7, a pattern border part 9, and a background area 11. The confirmation area 5 is composed of halftone dots or lines having the same halftone density. However, since the camouflage character 30 is used, it is difficult to identify the confirmation pattern section 7.

FIG. 8 is an enlarged view of the area 13 in the confirmation area 5. The confirmation pattern portion 7 has a regular pattern in which white and black stripes of 100 μm are equally spaced at an interval of 45 degrees to the right. The pattern bordering portion 9 is provided around the confirmation pattern portion 7 and has a pattern shifted from the pattern of the confirmation pattern portion 7 by a half cycle.

The background area 11 has a color and density that cannot be visually determined with respect to the check pattern section 7 and the pattern border section 9 and is the same as or arbitrary to the pattern of the check pattern section 7 or the pattern border section 9. Having the following pattern. When the confirmation tool 3 is placed on the printed material 1, the character A can be seen, but it is difficult to recognize the character A even when the printed material 1 itself is viewed with the naked eye.

FIG. 9 is an enlarged view of a confirmation area 21 having a pattern similar to that of the confirmation area 5 of FIG. The confirmation area 21 has a confirmation pattern part 25, a pattern border part 27, and a background area 29.

Here, the confirmation pattern section 25 has a regular pattern in which white and black 100 μm equally-spaced stripes are repeated at 45 degrees to the right. The pattern border portion 27 is provided around the confirmation pattern portion 25 and has a pattern that is shifted from the pattern of the confirmation pattern portion 25 by a half cycle. The pattern rim 27 is desirably provided in consideration of the sharpness of the moiré pattern when the checking tool 3 is placed, but need not be attached.

The background region 29 has substantially the same density as the confirmation pattern portion 25 and the pattern border portion 27. Here, a stripe rising 45 degrees to the left is used, but the angle and color of the stripe can be freely determined.

FIG. 10 is an enlarged view of the checking tool 3. The checking tool 3 is made of a light-transmitting film or the like, and the checking tool 3 is formed of a stripe similar to the stripe of the checking pattern section 25, and interferes with the checking pattern section 25 and the pattern edge section 27, and interferes with the background area 29. do not do.

FIG. 11 is an explanatory view in the case where the checking tool 3 is placed on the checking area 21. The checking pattern portion 25 interferes with the stripe of the checking tool 3 and becomes completely black. Also,
The pattern border 27 interferes with the stripe of the checking tool 3 and becomes lighter gray than the background area 29. Since the background area 29 does not interfere with the checking tool 3, the gray level does not change. Therefore, a black moiré pattern with a white border appears. In the case of FIG. 8, a black letter A with a white border appears.

FIG. 12 is an explanatory view showing a case where the checking tool 3 is placed on the checking area 21 at a half cycle shifted from the case of FIG. Interference, resulting in a lighter gray than the background area 29. Further, the pattern rim portion 27 interferes with the stripe of the checking tool 3 and becomes completely black. Since the background area 29 does not interfere with the checking tool 3, the gray level does not change. Accordingly, a white moiré pattern with a black border appears. In the case of FIG. 8, a white character A with a black border appears.

In this embodiment, a line is used for the checking tool 3 and the hidden pattern printing layer 17, but a halftone dot of one color may be used. Further, the present invention can be used for cash vouchers, commuter passes, betting tickets, boat tickets, other sheets, printed matter for toys, and the like. In a voucher or the like, for example, a voucher pattern, a hidden pattern, and a camouflage pattern are printed on paper serving as a base material.

[0027]

As described above, according to the present invention,
It is possible to provide a printed material, a checking tool, and a checking method that can prevent forgery and do not know that a hidden pattern is included.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the principle of an embodiment.

FIG. 2 is a plan view of a printed matter 1;

FIG. 3 is a cross-sectional view of a printed material 1.

FIG. 4 is a diagram for explaining a method of making a hidden pattern plate for creating a printed matter 1;

FIG. 5 is a view showing a printed matter 1 on which a regular pattern is printed.

FIG. 6 is a view showing a printed matter 1 on which an irregular pattern is printed.

FIG. 7 is an enlarged view of a confirmation area 5;

FIG. 8 is an enlarged view of an area 13 in a confirmation area 5;

FIG. 9 is an enlarged view of a confirmation area 21 having a pattern similar to that of the confirmation area 5 of FIG.

FIG. 10 is an enlarged view of a checking tool 3;

FIG. 11 is an explanatory diagram when the confirmation tool 3 is placed on the confirmation area 21;

FIG. 12 shows a check area 2 shifted by a half cycle from the case of FIG.
Explanatory drawing when the check tool 3 is placed on 1

[Explanation of symbols]

 1 Printed matter 3 Confirmation tool 5, 21 Confirmation area 7, 25 Confirmation pattern part 9, 27 Pattern border part 11, 29 Background area 15 Base Material 17: Hidden pattern printing layer 30: Camouflage characters

Claims (7)

[Claims] 1. A printed material comprising a substrate and a hidden pattern printing layer containing a camouflage pattern provided on the substrate. 2. The hidden pattern printing layer is provided with a check pattern portion having a regular pattern and a pattern border portion provided around the check pattern portion and having a pattern shifted by a half cycle from the pattern of the check pattern portion. And a background area having a regular pattern different from the confirmation pattern so that the confirmation pattern portion and the pattern border portion cannot be visually confirmed, and a camouflage pattern. Item 7. The printed matter according to Item 1. 3. The camouflage pattern is a continuous repeating pattern.
2. The printed matter according to 2. 4. The printed matter according to claim 1, wherein the camouflage pattern is an irregular pattern. 5. The printed matter according to claim 1, wherein an occupied area ratio of the camouflage pattern is 90% or less. 6. A confirming tool having a pattern that interferes with a hidden pattern printing layer of a printed matter according to claim 1. 7. The printed matter according to claim 1 is superimposed on the confirmation tool according to claim 7, and the presence or absence of a moiré pattern confirms that the printed matter is an original printed matter. How to confirm.