JP3239555B2 - Printed matter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to printed matter such as banknotes and securities, and more particularly to a printed matter which is extremely difficult to forge by copying using a color copying machine.

[0002]

2. Description of the Related Art In recent years, forgery by copying using a color copying machine has been increasing in printed materials such as banknotes and securities, which has become a serious social problem.

For this reason, various methods have been conventionally studied as methods for preventing forgery due to copying using a color copying machine.

That is, for example, when printing, a latent image appearing at the time of copying is imprinted by changing the size of a halftone dot for forming a print image in advance, or when a paper surface is made to have a metallic luster, and In order to prevent a metallic luster state from being reproduced, a measure for preventing copying has been taken on the paper itself.

However, at present, the digitization of color copiers has been advanced, and the performance has been remarkably improved by improving the resolution and providing a color correction function. Therefore, the appearance of a countermeasure for preventing forgery by copying using a color copying machine has been strongly desired.

[0006]

As described above, there is a problem that it is difficult to reliably prevent forgery caused by copying using a color copying machine in a printed material which has been subjected to conventional counterfeiting prevention measures. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to immediately identify the presence or absence of copying using a color copying machine and to reliably prevent forgery by color copying. It is an object of the present invention to provide an extremely reliable printed matter that can be used.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, in a printed matter which requires forgery prevention by copying using a color copying machine, first, according to the invention corresponding to claim 1, the printed matter is printed on a substrate. A daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion are provided adjacent to each other.

Further, the invention according to claim 2 is provided with a color copying preventing means in which a daylight fluorescent red ink portion and a brownish color ink portion are provided adjacent to each other on a base material.

Further, according to the invention corresponding to claim 1, a first color copying preventing means comprising a daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion provided adjacently on a substrate, A second color copy preventing means provided with a light fluorescent red ink portion and a brown color ink portion adjacent to each other.

The daylight fluorescent orange ink is, for example, C.I. I. Basic Orange 14 dye (C.I.
I. No. 46005), and the daylight fluorescent yellow ink is C.I. I. Basic Yellow 9 (C.I.
I. No. 46040) is used.

Further, as the above-mentioned fluorescent red ink,
C. I. Basic Red 1 (CI No. 0451)
60) is used.

[0013]

Therefore, in the printed matter according to the first aspect of the present invention, by providing the daylight fluorescent orange ink portion and the daylight fluorescent yellow ink portion adjacent to each other, in the initial state, the hues (see FIGS. Orange and yellow)
Can be confirmed, but after copying using a color copier, both become the same color yellow,
No contrast can be confirmed at all, and it can be seen that this is a copy.

The printed matter according to the second aspect of the present invention is provided with a color copy preventing means provided with a daylight fluorescent red ink portion and a brownish color ink portion adjacent to each other. The contrast due to the different hues (red and brown) can be visually confirmed, but after copying using a color copying machine, the two colors become the same brownish color, making it impossible to confirm the contrast at all. You can see that there is.

Further, in the printed matter according to the third aspect of the present invention, a first color copying preventing means comprising a daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion provided adjacent to each other; By providing the second color copy prevention means having the red ink portion and the brown color ink portion adjacent to each other, the color copying can be performed in the normal mode (automatic mode) by daylight. The fluorescent yellow ink portion and the daylight fluorescent orange ink portion have the same color in yellow, and the daylight fluorescent red ink portion and the brown-based ink portion have the same color in brown, indicating that the copy is obtained.

On the other hand, in order to prevent the same color between the daylight fluorescent yellow ink portion and the daylight fluorescent orange ink portion, when a color copying machine is set to a high red (magenta) density to perform color copying, The daylight fluorescent orange ink loses its fluorescence, but emits an orange hue. However, even if the red (magenta) density of the color copying machine is set to be high in the daylight fluorescent red ink section and the brown-based ink section, the contrast cannot be confirmed at all by forming the same color as the brown-based color, It turns out that it is a copy.

That is, even if copying is performed using the color correction mechanism of a color copying machine, the same coloration phenomenon occurs, so that forgery by color copying is extremely difficult.

As described above, when copying is performed using a color copying machine, the presence or absence of the copying can be immediately identified, and the effect of preventing forgery by color copying can be enhanced.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, by using an ink whose color cannot be reproduced even by the aforementioned digital color copying machine,
It is intended to obtain a printed matter having a high forgery prevention effect.

Basically, a color copy preventing means is provided by providing a plurality of ink portions having different hues adjacent to each other, which have the same hue when copied by a color copying machine, on a base material of a printed material. Things.

That is, the present inventors have found that even with a digital color copying machine having high color reproducibility, daylight fluorescent orange has poor color reproducibility, loses the fluorescent feeling after copying, and has a yellow color although the cause is unknown. Was found to be reproduced.

Further, it has been found that when daylight fluorescent yellow is similarly copied by a color copying machine, the fluorescent feeling is lost and the color becomes the same as the hue obtained when the daylight fluorescent orange ink is copied. When the ink portions of (daylight fluorescent yellow and daylight fluorescent orange) were provided adjacent to each other, the contrast could be visually confirmed in the initial state, but the contrast could not be confirmed at all after copying because of the same color.

On the other hand, when daylight fluorescent red ink was similarly copied by a color copying machine, it was found that the hue was reproduced in a brownish color, and in particular, red (magenta) of the color copying machine was found.
It was found that when the concentration was increased, the phenomenon was particularly remarkable.

For this reason, it is also possible to use a method in which a daylight fluorescent red ink and a brownish color ink are combined, and the color is made the same as a brownish color after copying.

In particular, effective measures to prevent duplication include anti-copying measures in which the daylight fluorescent orange ink section and the daylight fluorescent yellow ink section are provided adjacent to each other, and daylight fluorescent red ink and brown-based colors. Are provided at the same time as the copy protection measures provided adjacent to each other.

In this case, when color copying is performed in the normal mode, the daylight fluorescent yellow ink portion and the daylight fluorescent orange ink portion become yellow and the same color, and the daylight fluorescent red ink portion and the brown color ink portion become brown. By making the color the same as the base color, it can be seen that the document is a copy.

On the other hand, in order to prevent the same color between the daylight fluorescent yellow ink portion and the daylight fluorescent orange ink portion, color copying is performed when the red (magenta) density of the color copying machine is set high. The daylight fluorescent orange ink loses its fluorescence, but emits an orange hue. However, in the daylight fluorescent red ink portion and the brown ink portion, even when the red (magenta) density of the color copying machine is set to be high, the color is made the same as the brown color so that it is a copy. .

As described above, even when copying is performed using the color correction mechanism of the color copying machine, the same color phenomenon occurs, so that forgery by color copying is extremely difficult.

Hereinafter, an embodiment of the present invention based on the above concept will be described in detail with reference to the drawings.

FIG. 1A is a plan view showing an example of a configuration in which the invention corresponding to claim 1 is applied to a security that is a printed matter.

That is, as shown in FIG. 1 (a), the securities of the present embodiment have a plurality of ink portions having different hues on the substrate 1 and having the same hue when copied by a color copying machine. And a color copy preventing means provided with a daylight fluorescent orange ink portion 2 and a daylight fluorescent yellow ink portion 3 adjacent to each other.

Here, as the base material 1, a material having an appropriate strength as a printed securities, such as paper, for example, art paper, coated paper or other paper, or paperboard such as coated cardboard, etc., is conveniently used. You can use it selectively.

The daylight fluorescent orange ink section 2 includes, for example, C.I. I. Basic Orange 14 dye (C.I.
I. No. 46005), C.I. I. Basic Orange 2 (CI No. 11270), C.I. I. Basic Orange 11 (CI No. 46035) can be used. Specifically, for example, a product name: TL Orange T1 (manufactured by Toyo Ink Co., Ltd.) can be used.

Further, as the daylight fluorescent yellow ink portion 3, for example, C.I. I. Basic Yellow 9 (CI.
No. 46040), C.I. I. Basic Yellow 12
(CI No. 48065), C.I. I. Basic Yellow 37 (CI No. 41001) can be used. Specifically, for example, product name: TL Yellow T
1 (manufactured by Toyo Ink Co., Ltd.) can be used.

Each daylight fluorescent ink is an oxidation polymerization type offset ink, and is provided with a thickness of 1 to 2 μm. FIG. 4 is a characteristic diagram showing an example of spectral reflectance curves of the daylight fluorescent orange ink and the daylight fluorescent yellow ink, respectively.

Next, in the securities of the present embodiment configured as described above, the daylight fluorescent orange ink portion 2 and the daylight fluorescent yellow ink portion 3 are provided adjacent to each other, so that the initial state of the security is improved. , The contrast due to different hues (orange and yellow) can be confirmed.

On the other hand, when the securities of this embodiment were color-copied using a color copier (for example, a pixel full-color copier manufactured by Canon Inc.), the obtained copy was obtained as shown in FIG. As shown in Fig. 7, the fluorescence was lost, and the daylight fluorescent orange ink portion 2 and the daylight fluorescent yellow ink portion 3 became the same color as yellow.

As a result, no contrast can be confirmed at all, and it can be seen that this is a copy. Thus, the effect of preventing copying according to the present embodiment can be enhanced.

As described above, when copying is performed using a color copying machine, the presence or absence of the copying can be immediately identified, and the effect of preventing forgery by color copying can be enhanced.

As described above, the securities of this embodiment are:
A daylight fluorescent orange ink part 2 and a daylight fluorescent yellow ink part 3 are provided adjacent to each other as a plurality of ink parts having different hues which have the same hue when copied by a color copying machine on a base material 1. And a color copy preventing means.

Accordingly, in the initial state, the contrast due to the different hues (orange and yellow) can be visually confirmed, but after copying using a color copying machine, the daylight fluorescent orange ink unit 2 and the daylight fluorescent yellow Ink unit 3
Becomes the same color as yellow, so that no contrast can be confirmed at all, and it can be seen that this is a copy.

This makes it possible to immediately identify the presence or absence of copying using a color copying machine and to reliably prevent forgery by color copying.

Next, FIG. 2A is a plan view showing an example of a configuration in the case where the invention according to claim 2 is applied to a security that is a printed matter. The same elements as those in FIG. 1A are denoted by the same reference numerals.

That is, as shown in FIG. 2 (a), the securities of the present embodiment include a plurality of ink portions having different hues on the base material 1 and having the same hue when copied by a color copying machine. And a color copying prevention means provided with a daylight fluorescent red ink portion 4 and a brown-based color ink portion 5 adjacent to each other.

Here, as the base material 1, a material having an appropriate strength as a printed securities, such as paper, for example, art paper, paper including coated paper, or paperboard such as coated cardboard, etc., is conveniently used. You can use it selectively.

The daylight fluorescent red ink section 4 includes, for example, C.I. I. Basic Red 1 (CIN
o. 045160) can be used. Specifically, for example, a product name: TL Red T1 (Toyo Ink Co., Ltd.)
Manufactured).

Further, as the brown-based ink section 5, for example, a brown-based color (CFO No. 129 in the Toyo 88 color finder 1050) having the following composition can be used.

Medium: 60.8% Yellow: 20.1% 3 Gold Red: 17.3% 97C Black: 1.8% Each of the above inks is provided in a thickness of 1 to 2 μm. FIGS. 5 and 6 are characteristic diagrams showing examples of spectral reflectance curves of the same daylight fluorescent red ink and brownish color ink, respectively.

Next, in the securities of the present embodiment configured as described above, the daylight fluorescent red ink portion 4 and the brown-based color ink portion 5 are provided adjacent to each other, so that in the initial state, they are visually apparent. Contrasts due to different hues (red and brown) can be confirmed.

On the other hand, when the securities of the present embodiment were color-copied using a color copier (for example, a pixel full-color copier manufactured by Canon), the obtained copy was obtained as shown in FIG. As shown in Fig. 7, the fluorescence was lost, and the daylight fluorescent red ink portion 4 and the brown color ink portion 5 became the same color as the brown color.

As a result, no contrast can be confirmed at all, and it can be seen that this is a copy.

As a result, the effect of preventing copying in this embodiment can be enhanced.

As described above, when copying is performed using a color copying machine, the presence or absence of the copying can be immediately identified, and the effect of preventing forgery by color copying can be enhanced.

As described above, the securities of this embodiment are:
A daylight fluorescent red ink portion 4 and a brown-based color ink portion 5 are provided adjacent to each other as a plurality of ink portions having different hues which have the same hue when copied by a color copying machine on the base material 1. Is provided with a color copy preventing means.

Therefore, in the initial state, the contrast due to different hues (red and brown) can be visually confirmed, but after copying using a color copying machine, the daylight fluorescent red ink unit 4 and the brown-based ink unit Since No. 5 is made the same color as a brownish color, no contrast can be confirmed at all, and it can be seen that this is a copy.

As a result, it is possible to immediately identify the presence or absence of copying using a color copying machine, and to reliably prevent forgery due to color copying.

Next, FIG. 3A is a plan view showing a configuration example in the case where the invention corresponding to claim 3 is applied to securities as printed matter. 1 (a) and 2 (a)
The same elements as those shown in FIG.

That is, as shown in FIG. 3 (a), the securities of this embodiment include a plurality of ink portions having different hues on the substrate 1 and having the same hue when copied by a color copying machine. A first color copy preventing means provided with a daylight fluorescent orange ink section 2 and a daylight fluorescent yellow ink section 3 adjacent to each other, and a daylight fluorescent red ink section 4 and a brown color ink section 5 A second color copying prevention means provided adjacently is provided adjacently.

Here, the substrate 1, the daylight fluorescent orange ink part 2, the daylight fluorescent yellow ink part 3, the daylight fluorescent red ink part 4, and the brown color ink part 5 are the same as those in the above-described embodiments. The same ones can be used.

Next, in the securities of the present embodiment configured as described above, the first color copy prevention in which the daylight fluorescent orange ink portion 2 and the daylight fluorescent yellow ink portion 3 are provided adjacent to each other. The means and the second color copying prevention means provided with the daylight fluorescent red ink part 4 and the brown color ink part 5 adjacent to each other are different in appearance in the initial state. Hue (orange and yellow,
(Red and brown).

On the other hand, when the securities of this embodiment were subjected to color copying using a color copying machine (for example, a pixel full-color copying machine manufactured by Canon Inc.), the obtained copy was obtained as shown in FIG. As shown in (1), when color copying is performed in a normal mode (automatic mode), the daylight fluorescent yellow ink portion 3 and the daylight fluorescent orange ink portion 2 become the same color as yellow, and the daylight fluorescent red portion 4 and the brown-based The color ink portion 5 became the same color as the brown color.

As a result, no contrast can be confirmed at all, and it can be seen that this is a copy.

On the other hand, in order to prevent the same color of the daylight fluorescent yellow ink section 3 and the daylight fluorescent orange ink section 2 from being made the same color, the color copying machine is set at a high red (magenta) density to perform color copying. Is daylight fluorescent orange ink part 2
Loses fluorescence, but emits an orange hue. However, in the daylight fluorescent red ink unit 4 and the brown ink unit 5, even when the red (magenta) density of the color copying machine is set high, as shown in FIG. It has become.

As a result, no contrast can be confirmed at all, and it can be seen that this is a copy.

As a result, the effect of preventing copying in this embodiment can be enhanced.

That is, even when copying is performed using the color correction mechanism of a color copying machine, the same color phenomenon occurs, so that forgery by color copying is extremely difficult.

As described above, when copying is performed using a color copying machine, the presence or absence of the copying can be immediately identified, and the effect of preventing forgery by color copying can be enhanced.

As described above, the securities of this embodiment are:
A daylight fluorescent orange ink part 2 and a daylight fluorescent yellow ink part 3 are provided adjacent to each other as a plurality of ink parts having different hues which have the same hue when copied by a color copying machine on a base material 1. And a second color copy preventing means comprising a daylight fluorescent red ink portion 4 and a brown color ink portion 5 provided adjacently. It is.

Therefore, in the initial state, the contrast due to mutually different hues (orange and yellow, red and brown) can be visually confirmed, but after copying using a color copying machine, the daylight fluorescent orange ink unit 2 is obtained. And the daylight fluorescent yellow ink portion 3 becomes the same color as yellow, and the daylight fluorescent red ink portion 4 and the brown color ink portion 5 become the same color brown, so that no contrast can be confirmed at all.
It turns out that it is a copy.

On the other hand, in order to prevent the same color of the daylight fluorescent yellow ink portion 3 and the daylight fluorescent orange ink portion 2 from being made the same color, when a color copying machine is set at a high red (magenta) density to perform color copying. Is daylight fluorescent orange ink part 2
Loses fluorescence, but emits orange hue,
Also, in the daylight fluorescent red ink unit 4 and the brown-based ink unit 5, even when the red (magenta) density of the color copying machine is set to be high, since the same color is used as the brown-based color, no contrast can be confirmed at all. It turns out that it is a copy.

As a result, it is possible to immediately identify the presence or absence of copying using a color copying machine, and to reliably prevent forgery due to color copying.

The present invention is not limited to the above embodiment, but can be implemented in the following manner.

(A) In the embodiment of FIG. 3 described above, the first color copying preventing means comprising the daylight fluorescent orange ink section 2 and the daylight fluorescent yellow ink section 3, the daylight fluorescent red ink section 4 and the brown system Although the case where the second color copy prevention means including the color ink unit 5 is provided adjacent to the color ink unit 5 has been described, the invention is not limited to this.

(B) In each of the above embodiments, the substrate 1, the daylight fluorescent orange ink part 2, the daylight fluorescent yellow ink part 3, the daylight fluorescent red ink part 4, and the brown color ink part 5 include: However, the present invention is not limited to this, and a plurality of ink units having different hues and having the same hue when copied by a color copying machine other than these may be provided adjacently.

(C) In each of the above embodiments, the case where the invention is applied to securities as printed matter has been described. However, the present invention is not limited to this, and other printed matter which requires forgery prevention by copying using a color copying machine is applicable. The present invention is similarly applied to the above, and the same effects as described above can be obtained.

(D) In each of the above embodiments, the ink portion has a different reflectance in a specific wavelength band, but may be made of ink having the same reflectance in other wavelength bands.

[0077]

As described above, according to the present invention, a daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion are provided on a substrate in a printed matter which requires forgery prevention by copying using a color copying machine. The first part is provided adjacent to the
And at least one of the second color copying preventing means provided adjacent to the daylight fluorescent red ink portion and the brown color ink portion. Thus, it is possible to provide a highly reliable printed material that can immediately identify the presence or absence of copying using a color copying machine and reliably prevent forgery due to color copying.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a printed matter according to the invention corresponding to claim 1;

FIG. 2 is a plan view showing one embodiment of a printed matter according to the invention corresponding to claim 2;

FIG. 3 is a plan view showing one embodiment of a printed matter according to the invention corresponding to claim 3;

FIG. 4 is a characteristic diagram showing an example of a spectral reflectance curve of a daylight fluorescent orange ink and a daylight fluorescent yellow ink used for a printed matter in the embodiment.

FIG. 5 is a characteristic diagram showing an example of a spectral reflectance curve of a daylight fluorescent red ink used for a printed material in the embodiment.

FIG. 6 is a characteristic diagram showing an example of a spectral reflectance curve of a brown-based ink used for a printed material in the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Daylight fluorescent orange ink part, 3 ... Daylight fluorescent yellow ink part, 4 ... Daylight fluorescent red ink part, 5
… Brown color ink section.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiko Kusama 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. (56) References JP-A-6-219037 (JP, A) JP-A-7 −89215 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B42D 5/00-15/10 551 B41M 3/14 G03G 21/00 560

Claims (3)

(57) [Claims] 1. A printed material which requires forgery prevention by copying using a color copying machine, comprising: a daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion provided adjacently on a base material. Printed matter characterized by comprising prevention means. 2. A printed material which requires forgery prevention by copying using a color copying machine, wherein a daylight fluorescent red ink portion and a brown-based color ink portion are provided adjacent to each other on a base material. Printed matter characterized by comprising means. 3. A printed material which requires forgery prevention by copying using a color copying machine, wherein a daylight fluorescent orange ink portion and a daylight fluorescent yellow ink portion are provided adjacent to each other on a base material. And a second color copy preventing means provided with a daylight fluorescent red ink portion and a brown-based color ink portion adjacent to each other.