JP4590614B2 - Anti-counterfeit printed matter - Google Patents

Description

The present invention relates to an anti-counterfeit printed matter that can be applied to valuables such as banknotes, passports, securities, cards, stamps, product tags, toll road tickets, and various tickets.

Anti-counterfeiting technology has been applied to valuable items such as banknotes, passports, securities, cards, stamps, product tags, toll road tickets, and various tickets. For this reason, such valuables are printed with metallic gloss inks such as silver ink and gold ink, which are difficult to reproduce with a copying machine because of high material costs, and are subjected to copy prevention and authenticity determination. . In addition, a metal thin film is formed on valuables to prevent copying.

For example, as a technique using a metallic gloss ink such as silver ink or gold ink, a metallic gloss region is provided on the uneven surface of a sheet-like or belt-like support, and the metallic gloss region is formed on at least a part of the metallic gloss region. An anti-counterfeit display body in which another metallic glossy region of the same, same quality and / or different quality as the region is laminated by ink, wherein the metallic glossy region formed on the uneven surface of the support is the surface of the support An anti-counterfeiting display body characterized by irregular reflection with respect to incident light due to unevenness, and other metal gloss areas laminated on the upper surface of the metal gloss area exhibit regular reflection with respect to incident light due to a flat surface. A manufacturing method is disclosed (see Patent Document 1).

Japanese Patent No. 3449690 (page 1-13, FIG. 1-12)

For example, as a technique using a metal thin film, a first light reflecting portion including a first metal thin film layer and a first underlayer, and a second light including a second metal thin film layer and a second underlayer. And the first underlayer is different from the second underlayer, and the surface roughness of the first metal thin film layer is different from that of the second metal thin film layer. An anti-copy medium characterized by a difference in surface roughness is disclosed (see Patent Document 2).

Japanese Patent Laid-Open No. 10-81056 (page 1-9, FIG. 1-4)

However, in Japanese Patent No. 3449690, both the base and the information pattern are formed with metallic gloss ink, and whether or not the valuable is genuine is determined by whether or not the brightness of the information pattern changes. is there. However, since metallic gloss ink is expensive, the printed matter actually obtained was also expensive. Further, since both the base and the information pattern are printed with the metallic gloss ink, the difference in gloss between the base and the information pattern is small, the visibility of the information pattern is not excellent, and there is room for improvement. Japanese Patent Laid-Open No. 10-81056 is a technique for preventing copying, and a copy-preventing pattern formed on a valuable item takes advantage of a metal thin film that can be formed with a thin film thickness and is difficult to visually recognize. It becomes. However, since the anti-copying pattern is difficult to see visually, there is a problem in that it is difficult to determine whether or not valuables are genuine unless they are copied. In addition, since the metal thin film is formed by vacuum deposition or sputtering, a large-scale apparatus is required and the cost is higher than that of a general printing method. Furthermore, when forming a metal thin film on a paper substrate, the metal thin film is fixed. There is a problem that it is difficult to do this, and it is necessary to provide a process of coating the resin on the paper base material before forming the metal thin film layer, and there is a problem that the work process increases. Japanese Patent No. 3449690 and Japanese Patent Application Laid-Open No. 10-81056 do not make use of the color of the background.
In view of the above, the present invention aims to solve the above-mentioned problems, and without using a glossy metallic ink for both the base and the information pattern, a large-scale vacuum vapor deposition apparatus or sputtering apparatus is used for the metal. It can be formed in one step by a general printing method without forming a thin film, without limiting the substrate, and by overprinting with metallic luster ink on two or more substrates with different roughness, Since it is formed with a film thickness larger than that of the metal thin film disclosed in Kaihei 10-81056, the brightness / darkness of the information pattern changes with the naked eye when the printed material is tilted and observed. Furthermore, it is possible to make use of the color of the background by forming the area of the metallic gloss ink formed on the information pattern with halftone dots, line drawings, mesh screens, white line screens, contact screens, etc. In this case, the present invention proposes an anti-counterfeit printed matter that is excellent in the authenticity discrimination effect because the brightness and color of the information pattern changes with the naked eye.

In the present invention, at least one information pattern higher than the smoothness of the substrate is formed on the substrate, and the background region on and around the information pattern is overprinted with the metallic gloss ink to form a metallic gloss ink region. The metallic gloss ink area is a forgery-preventing printed matter divided into a metallic gloss information pattern area printed on the information pattern and a metallic gloss background area printed on the background area.

In the present invention, at least one information pattern lower than the smoothness of the substrate is formed on the substrate, and the background region on and around the information pattern is overprinted with the metallic gloss ink so that the metallic gloss ink region is formed. The formed metallic glossy ink region is a forgery-preventing printed matter divided into a metallic glossy information pattern region printed on the information pattern and a metallic glossy background region printed on the background region.

In the present invention, at least one information pattern higher than the smoothness of the base material is formed on the base material using at least one color ink, and the background area on and around the information pattern is overprinted with a metallic gloss ink. The metallic gloss ink area is divided into a metallic gloss information pattern area printed on the information pattern and a metallic gloss background area printed on the background area, and the information pattern The metallic gloss information pattern region printed on the screen is a forgery-preventing printed matter formed by a halftone dot, line drawing, halftone screen, white line screen or contact screen.

In the present invention, at least one information pattern lower than the smoothness of the base material is formed on the base material with at least one color ink, and the background area on and around the information pattern is overprinted with a metallic gloss ink. The metallic gloss ink area is divided into a metallic gloss information pattern area printed on the information pattern and a metallic gloss background area printed on the background area, and the information pattern The metallic gloss information pattern region printed on the screen is a forgery-preventing printed matter formed by a halftone dot, line drawing, halftone screen, white line screen or contact screen.

Moreover, this invention is a forgery prevention printed matter in which the said metallic luster ink consists of silver ink and / or gold ink.

By overprinting with metallic luster ink on two or more bases having different roughnesses, it is formed with a film thickness thicker than the metal thin film disclosed in JP-A-10-81056. The difference in gloss becomes large, the information pattern can be visually recognized with the naked eye, and it is possible to determine whether the information pattern is bright or dark by changing the brightness of the information pattern.

In addition, the information pattern is formed with colored ink, the smoothness of the information pattern and the surrounding background area is made different, and the information pattern and the surrounding background area are overprinted with a metallic gloss ink other than solid. Since it is formed with a film thickness that is thicker than the metal thin film disclosed in Japanese Patent Application Laid-Open No. 10-81056, the color and brightness of the information pattern cannot be observed with the naked eye when the printed material is tilted and observed. The change can be visually recognized, and the authenticity can be determined by the change in the color and brightness of the information pattern.

In order to overprint the metallic gloss ink on the resin or the colored ink using the resin or the colored ink for the information pattern without printing both the base and the information pattern as in Japanese Patent No. 3449690 with the metallic gloss ink, Since the amount of use of the metallic gloss ink can be reduced, it can be produced at a lower cost than in the prior art, and moreover, the difference in smoothness and glossiness between the metallic gloss information pattern area and the metallic gloss background area than in Japanese Patent No. 3449690. Occurs, and the brightness and darkness of the information pattern changes clearly.

In addition, when the base material of the anti-counterfeit printed material is paper, the type is not particularly limited, such as high-quality paper, coated paper, art paper, and the like, and can be applied to various printed materials.

The best mode for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the best mode for carrying out the invention described below, and includes various other embodiments within the scope of the technical idea described in the scope of claims. In addition, for smoothness measurement, Digibeck smoothness tester DB-2 type (JIS standard P8119: 1998) manufactured by Toyo Seiki Seisakusho Co., Ltd., and for change in color, variable angle high-speed spectrophotometry manufactured by Murakami Color Research Laboratory Co., Ltd. A GSP-2 type meter was used, and a digital gloss meter GM-3D type manufactured by Murakami Color Research Laboratory Co., Ltd. was used for the measurement of glossiness.

FIG. 1 shows a schematic diagram of an anti-counterfeit printed matter A1 of the present invention, its X-X ′ cross-sectional view, and a partially enlarged view thereof. The paper 1 of the anti-counterfeit printed matter A1 has a smoothness of 20 seconds or more and less than 1000 seconds. An information pattern 2 is printed on the paper 1 with a resin such as varnish or medium. The area where the information pattern 2 is printed has a smoothness higher than that of the paper 1. The background area 3 on and around the information pattern 2 is formed by overlapping the metallic gloss ink area 4 with metallic gloss ink. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed on the information pattern 2 and a metallic gloss background area 6 printed on the background area 3.

As shown in the XX ′ cross-sectional view of FIG. 1, the paper 1 has a smoothness of 20 seconds or more and less than 1000 seconds. Have Since the information pattern 2 is printed on the paper 1 with a resin such as varnish or medium, the resin is embedded in the concave portions of the fine irregularities 7. Therefore, the surface of the information pattern 2 is superior in smoothness to a region where the information pattern 2 is not applied. For this reason, the metallic gloss ink area 4 of the anti-counterfeit printed matter A1 has the surface of the metallic gloss information pattern area 5 overprinted on the information pattern 2 and the metallic gloss background area 6 overprinted on the background area 3. Have different smoothness.

FIG. 2 is a diagram when the anti-counterfeit printed matter A1 of the present invention is observed from the vertical direction with the naked eye under visible light having an incident angle of 45 °. A part of the incident light I1 is irregularly reflected I2 on the metallic luster information pattern area 5 to obtain specularly reflected light I3. A part of the incident light I 1 ′ is irregularly reflected light I 2 ′ on the metallic gloss background region 6, and regular reflected light I 3 ′ is obtained. Since the smoothness is lower on the metallic gloss background area 6 than on the metallic gloss information pattern area 5, the irregularly reflected light I2 ′ has a larger amount of irregularly reflected light than the irregularly reflected light I2, and the specularly reflected light I3 ′ is larger than the regular reflected light I3. The amount of specular reflection is small. For this reason, there is a large difference in the amount of irregularly reflected light on the metallic gloss information pattern area 5 and the metallic gloss background area 6. Therefore, the brightness on the metal information pattern area 5 is visually recognized lower than that on the metallic gloss background area 6.

FIG. 3 is a view when the anti-counterfeit printed matter A1 of the present invention is observed with the naked eye tilted gradually from the vertical direction to the horizontal direction under visible light having an incident angle of 45 °. On the metal gloss information pattern area 5, by tilting, the amount of reflected light gradually increases and becomes the highest in the regular reflection light area, and the brightness is visually recognized with higher brightness than on the metal gloss background area 6. When the image is further tilted, the amount of reflected light is visually recognized to be gradually lower than that on the metallic glossy background region 6. For this reason, when viewed from the vertical direction with the naked eye under visible light, the metal gloss information pattern area 5 is viewed as having a lower brightness than the metal gloss background area 6, so the metal gloss information pattern as a negative image. Although the area 5 is visually recognized, the reflected light amounts of the metallic gloss information pattern area 5 and the metallic gloss background area 6 are the same in a viewing angle of 15 to 25 degrees between the diffuse light area 0 ° and the regular reflection light region 45 °. As a positive image, only the metallic glossy ink area is visible, and in the specular reflection light quantity area when tilted further, the metallic gloss information pattern area 5 is viewed with a gradually higher brightness than on the metallic gloss background area 6. The metallic gloss information pattern area 5 is visually recognized. Even when the image is further tilted than the specularly reflected light region, the reflected light amount of the metallic gloss information pattern region 5 and the metallic gloss background region 6 is equal, and only the metallic glossy ink region is visually recognized at a viewing angle of 70 to 80 °. Further, when tilted further, the metallic gloss information pattern area 5 is visually recognized as having a lower brightness than the metallic gloss background area 6, and is also viewed as a negative image. In other words, when observed with the naked eye by gradually tilting from the vertical direction to the horizontal direction under visible light, the metallic gloss information pattern region 5 is gradually inverted from the negative image to the positive image and further to the negative image.

FIG. 4 shows a schematic diagram of the anti-counterfeit printed matter A2 of the present invention, its X-X ′ sectional view, and a partially enlarged view thereof. The paper 1 of the anti-counterfeit printed matter A2 has a smoothness of 1000 seconds or more and less than 2000 seconds. An information pattern 2 is printed on the paper 1 with a resin such as varnish or medium. The area where the information pattern 2 is printed has a smoothness lower than the smoothness of the paper 1. The background area 3 on and around the information pattern 2 is formed by overlapping the metallic gloss ink area 4 with metallic gloss ink. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed on the information pattern 2 and a metallic gloss background area 6 printed on the background area 3.

As shown in the X-X ′ cross-sectional view of FIG. 4, the sheet 1 has a smooth surface 8 because the surface of the sheet is more than 1000 seconds and less than 2000 seconds. Since the information pattern 2 is printed on the paper 1 by a resin such as varnish or medium, fine irregularities are formed on the smooth surface 8 by the resin. Therefore, the surface of the information pattern 2 is inferior in smoothness to a region where the information pattern 2 is not applied. For this reason, the metallic gloss ink area 4 of the anti-counterfeit printed matter A2 is the surface of the metallic gloss information pattern area 5 printed over the information pattern 2 and the metallic gloss background area 6 printed over the background area 3. Have different smoothness.

FIG. 5 is a diagram when the anti-counterfeit printed matter A2 of the present invention is observed from the vertical direction with the naked eye under visible light having an incident angle of 45 °. A part of the incident light I1 is irregularly reflected I2 on the metallic luster information pattern area 5 to obtain specularly reflected light I3. A part of the incident light I 1 ′ is irregularly reflected light I 2 ′ on the metallic gloss background region 6, and regular reflected light I 3 ′ is obtained. On the metallic gloss background area 6, the smoothness is higher than on the metallic gloss information pattern area 5, so that the irregularly reflected light I2 'has less diffused light than the irregularly reflected light I2, and the regular reflected light I3' is less than the regular reflected light I3. The amount of specular reflection is large. For this reason, there is a large difference in the amount of irregularly reflected light on the metallic gloss information pattern area 5 and the metallic gloss background area 6. Therefore, the metal information pattern area 5 is visually recognized with higher brightness than the metal gloss background area 6. This is because the smoothness of the paper 1 is 1000 seconds or more and less than 2000 seconds and is excellent in smoothness, and therefore the smoothness is lowered by printing with resin and / or silver ink.

FIG. 6 is a view when the anti-counterfeit printed matter A2 of the present invention is observed by gradual tilting from the vertical direction to the horizontal direction with the naked eye under visible light. On the metal gloss information pattern area 5, by tilting, the amount of reflected light gradually decreases and becomes the smallest in the regular reflection light area, and the brightness is visually recognized lower than that on the metal gloss background area 6. When the image is further tilted and observed, the amount of reflected light is gradually higher than that on the metallic glossy background region 6. For this reason, when viewed from the vertical direction with the naked eye under visible light with an incident angle of 45 °, the brightness on the metallic gloss information pattern area 5 is higher than that on the metallic gloss background area 6, so a positive image Although the metallic gloss information pattern area 5 is visually recognized, the reflection of the metallic gloss information pattern area 5 and the metallic gloss background area 6 is between 35 ° to 40 ° between the diffuse light area 0 ° and the specular reflection light area 45 °. Since the light intensity becomes equal, only the metallic gloss ink area is visually recognized, and in the regular reflection light quantity area when tilted, the metallic gloss information pattern area 5 is visually recognized to be gradually lower in brightness than on the metallic gloss background area 6, The metallic gloss information pattern area 5 is visually recognized as a negative image. Even when the image is further tilted than the specularly reflected light region, the reflected light amount of the metallic gloss information pattern region 5 and the metallic glossy background region 6 is equal, and only the metallic glossy ink region is visually recognized at a viewing angle of 50 to 55 °. Further, when tilted further, the metallic gloss information pattern area 5 is visually recognized as having higher brightness than the metallic gloss background area 6, and is also viewed as a positive image. That is, when observed with the naked eye by tilting from the vertical direction to the horizontal direction under the visible light, the metallic gloss information pattern region 5 is gradually reversed from the positive image to the negative image.

FIG. 7 shows a schematic view of the forgery-preventing printed matter A3 of the present invention, its X-X 'cross-sectional view, and a partially enlarged view thereof. The paper 1 of the anti-counterfeit printed matter A3 has a smoothness of 20 seconds or more and less than 1000 seconds. An information pattern 2 is printed on the paper 1 with at least one color ink. The area where the information pattern 2 is printed has a smoothness higher than that of the paper 1. The background area 3 on and around the information pattern 2 is formed by overlapping the metallic gloss ink area 4 with metallic gloss ink. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed on the information pattern 2 and a metallic gloss background area 6 printed on the background area 3. The metallic gloss information pattern area printed on the information pattern 2 is formed by a halftone dot, a line drawing, a mesh screen, a white line screen, or a contact screen.

As shown in the XX ′ cross-sectional view of FIG. 7, since the paper 1 has a smoothness of 20 seconds or more and less than 1000 seconds, the surface of the paper 1 is inferior in smoothness compared to the art paper, and therefore fine irregularities Has 7. Since the information pattern 2 is printed on the paper 1 with colored ink, the colored ink is embedded in the concave portions of the fine irregularities 7. Therefore, the surface of the information pattern 2 is superior in smoothness to a region where the information pattern 2 is not applied. For this reason, the metallic gloss ink area 4 of the anti-counterfeit printed matter A3 has a metallic gloss information pattern area 5 printed on the information pattern 2 and a metallic gloss background area 6 printed on the background area 3 on the surface. Have different smoothness.

FIG. 8 is a view when the anti-counterfeit printed matter A3 of the present invention is observed from the vertical direction with the naked eye under visible light having an incident angle of 45 °. A part of the incident light I1 is irregularly reflected I2 on the metallic luster information pattern area 5 to obtain specularly reflected light I3. A part of the incident light I 1 ′ is irregularly reflected light I 2 ′ on the metallic gloss background region 6, and regular reflected light I 3 ′ is obtained. Since the smoothness is lower on the metallic gloss background area 6 than on the metallic gloss information pattern area 5, the irregularly reflected light I2 ′ has a larger amount of irregularly reflected light than the irregularly reflected light I2, and the specularly reflected light I3 ′ is larger than the regular reflected light I3. The amount of specular reflection is small. For this reason, there is a large difference in the amount of irregularly reflected light on the metallic gloss information pattern area 5 and the metallic gloss background area 6. Therefore, the metal information pattern area 5 is visually recognized as having a lower brightness than the metal gloss background area 6, and the metal information pattern area 5 is formed of a halftone dot, a line drawing, a mesh screen, a white line screen, or a contact screen. The color of the color ink of at least one color of the information pattern 2 can be visually recognized from the non-printing area of the gloss ink (printing is missing, non-halftone part, non-image part, etc.). Therefore, the metal information pattern region 5 is visually recognized as a mixed color of the metallic gloss ink and at least one color ink.

FIG. 9 is a view when the anti-counterfeit printed matter A3 of the present invention is observed while being gradually tilted from the vertical direction to the horizontal direction with the naked eye under visible light having an incident angle of 45 °. By tilting the metal gloss information pattern area 5, the amount of reflected light gradually increases and becomes the largest in the regular reflection light area, and the brightness is visually recognized to be gradually higher than on the metal gloss background area 6. Although the information pattern area 5 is formed by a halftone dot, a line drawing, a mesh screen, a white line screen or a contact screen, the color of at least one color ink of the information pattern 2 is visually recognized from the non-printing area of the metallic gloss ink. And the color of the metallic glossy ink having a higher brightness than the metallic glossy background region 6 can be visually recognized. When tilted and observed further, the amount of reflected light is gradually lower than that on the metallic glossy background area 6, and the metal information pattern area 5 is formed by a halftone dot, line drawing, mesh screen, white line screen or contact screen, The color of at least one colored ink of the information pattern 2 can be visually recognized from the non-printing area of the metallic gloss ink. Therefore, the metal information pattern region 5 is visually recognized as a mixed color of the metallic gloss ink and at least one color ink. For this reason, when viewed from the vertical direction with the naked eye under visible light, the metal gloss information pattern area 5 is viewed with lower brightness than the metal gloss background area 6, so the metal gloss information pattern area 5 is Although it is visually recognized as a color mixture of metallic gloss ink and at least one color ink, the metallic gloss information pattern region 5 and the metallic gloss background are between 15 and 25 ° between the diffuse light region 0 ° and the regular reflection light region 45 °. The amount of reflected light in region 6 is the same, only the metallic glossy ink region is visible, and in the regular reflected light amount region when tilted, the metallic gloss information pattern region 5 is gradually brighter than the metallic glossy background region 6. As a result, the color of the metallic glossy ink having a higher brightness than the metallic glossy background region 6 is visually recognized. Even when the image is further tilted than the specular reflection light region, only the metallic gloss ink region is visually recognized at a viewing angle of 70 to 80 °. When the tilt is further tilted, the metallic gloss information pattern region 5 has a lightness higher than that of the metallic gloss background region 6. Since it is visually recognized low, it is again visually recognized as a mixed color of the metallic gloss ink and at least one color ink. In other words, the metallic luster information pattern area 5 is lighter than the metallic luster background area 6 due to the color mixture of the metallic gloss ink and at least one color ink when observed with the naked eye while gradually tilting from the vertical direction to the horizontal direction under visible light. However, the color of the metallic glossy ink is changed to a high color and the color of the metallic glossy ink and at least one color ink is continuously reversed. In this case, for example, when an information pattern is formed using red and blue as the colored inks, both colors disappear in the regular reflection light region and change to the color of the metallic gloss ink.

FIG. 10 shows a schematic diagram of the anti-counterfeit printed matter A4 of the present invention, its X-X ′ sectional view, and a partially enlarged view thereof. The sheet 1 of the anti-counterfeit printed matter A4 has a smoothness of 1000 seconds or more and less than 2000 seconds. An information pattern 2 is printed on the paper 1 with at least one color ink. The area where the information pattern 2 is printed has a smoothness lower than the smoothness of the paper 1. The background area 3 on and around the information pattern 2 is formed by overlapping the metallic gloss ink area 4 with metallic gloss ink. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed on the information pattern 2 and a metallic gloss background area 6 printed on the background area 3. The metallic gloss information pattern area printed on the information pattern 2 is formed by a halftone dot, a line drawing, a mesh screen, a white line screen, or a contact screen.

As shown in the X-X ′ cross-sectional view of FIG. 10, the paper 1 has a smooth surface 8 because the surface of the paper 1 is superior in smoothness to high-quality paper because the paper 1 has 1000 seconds or more and less than 2000 seconds. Since the information pattern 2 is printed on the paper 1 with at least one color ink, fine irregularities are formed on the smooth surface 8 with at least one color ink. Therefore, the surface of the information pattern 2 is inferior in smoothness to a region where the information pattern 2 is not applied. For this reason, the metallic gloss ink area 4 of the anti-counterfeit printed matter A4 has the surface of the metallic gloss information pattern area 5 overprinted on the information pattern 2 and the metallic gloss background area 6 overprinted on the background area 3. Have different smoothness.

FIG. 11 is a view when the anti-counterfeit printed matter A4 of the present invention is observed from the vertical direction with the naked eye under visible light having an incident angle of 45 °. A part of the incident light I1 is irregularly reflected I2 on the metallic luster information pattern area 5 to obtain specularly reflected light I3. A part of the incident light I 1 ′ is irregularly reflected light I 2 ′ on the metallic gloss background region 6, and regular reflected light I 3 ′ is obtained. On the metallic gloss background area 6, the smoothness is higher than on the metallic gloss information pattern area 5, so that the irregularly reflected light I2 'has less diffused light than the irregularly reflected light I2, and the regular reflected light I3' is less than the regular reflected light I3. The amount of specular reflection is large. For this reason, there is a large difference in the amount of irregularly reflected light on the metallic gloss information pattern area 5 and the metallic gloss background area 6. Therefore, the metal information pattern area 5 is visually recognized as having higher brightness than the metal gloss background area 6, and the metal information pattern area 5 is formed by a halftone dot, line drawing, mesh screen, white line screen, or contact screen. Accordingly, the color of at least one color ink of the information pattern 2 cannot be visually recognized from the non-printing area of the metallic glossy ink, and the color of the metallic glossy ink having higher brightness than the metallic glossy background area 6 can be visually recognized.

FIG. 12 is a diagram of the anti-counterfeit printed matter A4 according to the present invention observed under the visible light while being gradually tilted from the vertical direction to the horizontal direction with the naked eye. On the metal gloss information pattern area 5, by tilting, the amount of reflected light gradually decreases and becomes the least in the regular reflection light area, and the brightness is visually recognized to be gradually lower than on the metal gloss background area 6. Since the area 5 is formed by a halftone dot, a line drawing, a mesh screen, a white line screen or a contact screen, the color of at least one colored ink of the information pattern 2 can be visually recognized from the non-printing area of the metallic gloss ink. Therefore, the metal information pattern region 5 is visually recognized as a mixed color of the metallic gloss ink and at least one color ink. When tilted and observed, the amount of reflected light is gradually higher than that on the metallic glossy background area 6, and the metallic information pattern area 5 is formed by a halftone dot, line drawing, mesh screen, white line screen or contact screen. Regardless, the color of at least one colored ink of the information pattern 2 cannot be visually recognized from the non-printing area of the metallic glossy ink, and the color of the metallic glossy ink having higher brightness than the metallic glossy background area 6 can be visually recognized. For this reason, when viewed from the vertical direction with the naked eye under visible light having an incident angle of 45 °, the metal gloss information pattern area 5 is viewed with a higher brightness than the metal gloss background area 6, so that the metal gloss Although the color of the metallic gloss ink having a higher brightness than the background region 6 and the mixed color of at least one color ink are visually recognized, between 35 to 40 ° between the diffused light region 0 ° and the specularly reflected light region 45 °, The metallic gloss information pattern area 5 and the metallic gloss background area 6 have the same amount of reflected light, and only the metallic gloss ink area is visually recognized. 6 Since the brightness is visually recognized to be gradually lower than above, the metal gloss information pattern region 5 is visually recognized as a mixed color of the metal gloss ink and at least one color ink. Even when the image is tilted further than the specular reflection light region, only the metallic gloss ink region is visually recognized at a viewing angle of 50 to 55 °, and when the tilt is further tilted, the metallic gloss information pattern region 5 has a brightness higher than that of the metallic gloss background region 6. Since it is visually recognized high, the color of the metallic glossy ink having a lightness higher than that of the metallic glossy background region 6 and the color mixture of at least one color ink are visually recognized. In other words, the metallic gloss information pattern area 5 is a color of the metallic glossy ink from the color mixture of the metallic glossy ink and at least one color ink when observed with the naked eye while being tilted gradually from the vertical direction to the horizontal direction under the visible light. In addition, the color of the metallic luster ink and the color mixture of at least one color ink are gradually reversed again. In this case, for example, when an information pattern is formed using red and blue as the colored inks, both colors disappear in the regular reflection light region and change to the color of the metallic gloss ink.

In addition to the above configuration, two information patterns may be provided, one of which is formed of a resin such as varnish or medium, the other is formed of colored ink, and overprinted with metallic gloss ink on the two information patterns.

The resin such as varnish or medium used for the information pattern is not particularly limited. For example, urethane resin, acrylic resin, butyral resin, chlorinated polypropylene, polyvinyl chloride, polyester, polyamide, phenol resin, styrene-maleic resin. Examples include acid copolymers, vinyl chloride-vinyl acetate copolymers, melamine resins, ketone resins, coumarone / indene resins, urea resins, petroleum resins, alkyd resins, epoxy resins, synthetic resins, and natural resins.

The color ink used for the information pattern is, for example, an anti-counterfeit printed matter in which the information pattern 2 is formed with offset ink (cyan), offset ink (magenta) or offset ink (yellow). Since the color change occurs in the metallic gloss information pattern area and the metallic gloss background area, the information pattern can be clearly discriminated with the naked eye.

Of course, the anti-counterfeit printed matter of the present invention is formed of a metallic glossy ink that is difficult to reproduce with a copying machine, and thus has an anti-copying effect.

The metallic luster ink used in the present invention is an ink having a strong reflected light amount such as gold ink and silver ink. In particular, printing with gold ink or silver ink is preferable, and the obtained effect is also excellent.

The substrate on which the anti-counterfeit printed matter A1 to A4 of the present invention is printed is not particularly limited as long as the smoothness is 20 seconds or more and less than 1000 seconds or 1000 seconds or more and less than 2000 seconds. Can be used. The type of paper sheet is not particularly limited, and examples thereof include high-quality paper, coated paper, and art paper.

  Printing method for printing resin such as varnish or medium, colored ink or metallic gloss ink is not particularly limited, such as offset printing method, gravure printing method, screen printing method, flexographic printing method, ink jet printer, laser printer, etc. However, the offset printing method is particularly preferable. However, the present invention requires a thicker film thickness than the metal thin film, and the film thickness needs to be about 1 μm to 10 μm.

The configuration of the information pattern can be formed by a solid, halftone dot, line drawing, mesh screen, white line screen, or contact screen. Similarly, the composition of the metallic gloss ink region can be formed by a solid, halftone dot, line drawing, mesh screen, white line screen or contact screen. However, when an information pattern is printed with colored ink and uses its color, a non-printing area is required, and therefore, it is necessary to form it with a dot other than a solid, a line drawing, a mesh screen, a white line screen, or a contact screen.

Since the information pattern can be composed of at least one of letters, numbers, symbols, and patterns, the design is not particularly limited. The design of the metallic gloss ink area is not particularly limited. By forming with a color pattern or the like, the forgery prevention effect and the design are improved. The design is not particularly limited as long as the background area exists around the information pattern.

EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.

Example 1
A paper 1 having a smoothness of about 100 seconds is prepared, and an information pattern 2 shown in FIG. 13A is printed on the varnish (UV L Carton OP varnish manufactured by T & K TOKA) using an offset printing machine. The background area 3 on and around it is printed with silver ink (TOPSTAR silver silver manufactured by ECKART), and the background area 3 on and around the information pattern 2 is overprinted with the metallic gloss ink area 4 shown in FIG. An anti-counterfeit printed matter A5 shown in FIG. 13 (c) was obtained. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed over the information pattern 2 area and a metallic gloss background area 6 printed over the background area 3. When the anti-counterfeit printed matter A5 is observed by gradual tilting from the vertical direction to the horizontal direction with the naked eye under visible light, the metallic luster information pattern area 5 is gradually reversed from the negative image to the positive image and further to the negative image. It could be confirmed.

In order to verify the effect of Example 1, the anti-counterfeit printed matter A5 was manufactured by Murakami Color Research Laboratory Co., Ltd., and the variable angle high-speed spectrophotometer GSP-2 was used to measure the lightness L ^{* of} CIE chromaticity using a D65 light source. The results are shown in FIG. FIG. 14 shows the lightness L ^* received at a light receiving angle of 0 to 80 ° when the metallic gloss information pattern region 5 and the metallic gloss background region 6 are irradiated at an incident light angle of 45 °. The lightness L ^* of the metallic glossy background region 6 is high at a light reception angle of 0 ° in the diffuse light quantity region, but there is almost no difference in the lightness L ^* at light reception angles of 20 ° and 75 °, and the light reception angle near 45 ° in the regular reflection light quantity region. As a result, the brightness L ^* of the metallic gloss information pattern area 5 was increased, and a significant difference from the metallic gloss background area 6 occurred. As described above, when the lightness L ^* is high, when it is defined as a positive image when viewed with the naked eye, the metal gloss information pattern region 5 is further changed from a negative image to a positive image when observed by gradually tilting from the vertical direction to the horizontal direction. It appears that the negative image is continuously reversed gradually.

An anti-counterfeit printed matter having a different design and the same material as in Example 1 was prepared. After printing the information patterns shown in FIG. 15 (a) to FIG. 15 (e) on the paper 1 having a smoothness of about 100 seconds with an varnish (UV L Carton OP varnish manufactured by T & K TOKA) using an offset printer. 17 (a) to FIG. 17 (a) to FIG. 17 (a) to FIG. 17 (a) to FIG. 17 (a) to FIG. 17 (b) by overprinting the metallic gloss ink region shown in FIGS. The anti-counterfeit printed matter A6 to A10 shown in 17 (e) was obtained. The anti-counterfeit printed matter A6 to A10 had the same effect as in Example 1. The anti-counterfeit prints A6 and A7 are pseudo-holograms, and the anti-counterfeit prints A8 to A10 are pseudo-hologram threads.

(Example 2)
A sheet 1 having a smoothness of about 1400 seconds is prepared, and an information pattern shown in FIG. 18A is printed with an varnish (UV mat OP varnish manufactured by T & K TOKA) using an offset printing machine. The surrounding background area 3 was silver ink (TOPSTAR UV silver manufactured by ECKART) and the metallic glossy ink area 4 shown in FIG. 18B was overprinted to obtain an anti-counterfeit printed matter A11 shown in FIG. 18C. The anti-counterfeit printed matter A11 has the same design as the anti-counterfeit printed matter A5 of the first embodiment. The metallic gloss ink area 4 is divided into a metallic gloss information pattern area 5 printed over the area on the information pattern 2 and a metallic gloss background area 6 printed over the background area 3. When the anti-counterfeit printed matter A11 is observed under the visible light while being gradually tilted from the vertical direction to the horizontal direction with the naked eye, the metallic gloss information pattern region 5 is gradually inverted from the positive image to the negative image and then gradually inverted. It could be confirmed.

In order to verify the effect of Example 2, the anti-counterfeit printed matter A11 was measured by the Murakami Color Research Laboratory Co., Ltd., a variable-angle high-speed spectrophotometer GSP-2, and a D65 light source was used to measure the lightness L ^{* of the} CIE chromaticity. The results are shown in FIG. FIG. 19 shows the lightness L ^* received at a light receiving angle of 0 to 80 ° when the metallic gloss information pattern region 5 and the metallic gloss background region 6 are irradiated at an incident light angle of 45 ° as in the first embodiment. At the light receiving angles of 37.5 ° and 52.5 ° in the diffused light amount region, there is no difference in the lightness L ^* between the metallic gloss information pattern region 5 and the metallic glossy background region 6, but around the light receiving angle of 45 ° in the specularly reflected light amount region. As a result, the brightness L ^* of the metallic gloss background area 6 was increased, and a large difference was produced from the metallic gloss information pattern area 5. When the lightness L ^* is high as in the case of the first embodiment, when it is defined as a positive image when viewed with the naked eye, the metallic gloss information pattern region 5 is observed by being gradually inclined from the vertical direction to the horizontal direction, contrary to the first embodiment. In some cases, it appears that the positive image is gradually inverted from the positive image to the positive image.

An anti-counterfeit printed matter having a different design and the same material as in Example 2 was prepared. An information pattern similar to the design shown in FIGS. 15 (a) to 15 (e) is applied to the paper 1 having a smoothness of about 1400 seconds using an varnish (UV mat OP varnish manufactured by T & K TOKA) with an offset printing machine. After printing, the metallic gloss ink area similar to the design shown in FIGS. 16 (a) to 16 (e) is printed on the information pattern and the surrounding area with silver ink (TOPKAR UV silver made by ECKART). Overprints A12 to A16 were obtained. The anti-counterfeit printed matter A12 to A16 obtained the same effect as in Example 2.

(Example 3)
Prepare paper 1 with a smoothness of about 100 seconds, and print information pattern 2a with varnish (UV L Carton OP varnish manufactured by T & K TOKA) using an offset printing machine. -Information pattern 2b was printed with DT process red). Forgery of FIG. 20 obtained by the metallic glossy ink region 4 printed on the information pattern 2a, the information pattern 2b and the background region 3 around the information pattern 2a with silver ink (TOPSTAR silver silver manufactured by ECKART) at a dot ratio of 70%. It is prevention printed matter A17. The metallic gloss ink area 4 includes a metallic gloss information pattern area 5a printed on the information pattern 2a, a metallic gloss information pattern area 5b printed on the information pattern 2b, and a metal printed on the background area 3. It is divided into a glossy background area 6. When the anti-counterfeit printed matter A17 is observed with the naked eye in the visible light while being gradually tilted from the vertical direction to the horizontal direction, the metallic gloss information pattern area 5a is gradually reversed from the negative image to the positive image and further to the negative image. It could be confirmed. In addition, the metallic luster information pattern area 5b is lighter than the metallic luster background area 6 due to the color mixture of the metallic luster ink and the colored ink (red) when observed by tilting from the vertical direction to the horizontal direction with the naked eye under visible light. Changes to a color of high metallic glossy ink, and then gradually reverses continuously again to a mixed color of metallic glossy ink and colored ink (red). In this case, in the regular reflection light region, the color of the colored ink (red) in the metallic gloss information pattern region 5b disappears and changes to the same metallic glossy ink color as the metallic gloss information pattern region 5a.

In order to verify the effect of Example 3, the anti-counterfeit printed matter A17 was manufactured by Murakami Color Research Laboratory Co., Ltd., a variable-angle high-speed spectrophotometer model GSP-2, using a D65 light source, and a hue of DIE chromaticity a ^* b ^*. The results of measuring the brightness L ^* are shown in FIG. FIG. 21 shows hues a ^* b ^* and lightness received at a light receiving angle of 0 to 80 ° when the metal gloss information pattern region 5a, the metal gloss information pattern region 5b and the metal gloss background region 6 are irradiated at an incident light angle of 45 °. L ^* . In hue a ^* b ^* , when the light receiving angle of the diffuse light amount area is 0 °, the metallic gloss information pattern region 5b using the offset ink red shows a reddish color of + a ^*. The color shifts to a yellow color of + b ^* . Further, the metallic gloss information pattern area 5a using the offset OP varnish is an achromatic color in the center of the chromaticity diagram at the light receiving angle of 0 ° in the diffused light quantity region, but when the specular reflection light becomes 45 °, it is affected by the silver ink. It approaches the hue of the metallic luster information pattern area 5b, making it difficult to distinguish with the naked eye. Further, at a light receiving angle of 70 °, which is an inclined observation angle, the yellowishness disappears and the hue changes in both the metallic gloss information pattern region 5a and the metallic gloss information pattern region 5b. Meanwhile, the lightness L ^*, but the lightness L ^* similarly metallic luster background region 6 in Example 1 is higher in the diffused light region, the light receiving angle 20 °, it is not nearly lightness L ^* difference in 75 °, specular reflection light amount The brightness L ^* of the metallic gloss information pattern area 5a and the metallic gloss information pattern area 5b was increased near the light receiving angle of 45 °, and a significant difference from the metallic gloss background area 6 occurred.

Example 4
Prepare paper 1 with a smoothness of about 1400 seconds, and print the information pattern 2a with varnish (UV mat OP varnish manufactured by T & K TOKA) using an offset printing machine. The information pattern 2b was printed by DT process red. Forgery-proof printed matter A18 obtained by metallic glossy ink region 4 printed on silver pattern (TOPKAR UV silver made by ECKART) with a dot ratio of 70% on information pattern 2a, background region 3 on and around information pattern 2b It is. The metallic gloss ink area includes a metallic gloss information pattern area 5a printed on the information pattern 2a, a metallic gloss information pattern area 5b printed on the information pattern 2b, and a metallic gloss background printed on the background area. Divided into area 6. When the anti-counterfeit printed matter A18 is observed under the visible light with the naked eye being gradually tilted from the vertical direction to the horizontal direction, the metallic gloss information pattern area 5a is gradually reversed from the positive image to the negative image. It could be confirmed. In addition, the metallic luster information pattern area 5b is lighter than the metallic luster background area 6 due to the color mixture of the metallic luster ink and the colored ink (red) when observed by tilting from the vertical direction to the horizontal direction with the naked eye under visible light. Changes to a color of high metallic glossy ink, and then gradually reverses continuously again to a mixed color of metallic glossy ink and colored ink (red). In this case, in the regular reflection light region, the color of the colored ink (red) in the metallic gloss information pattern region 5b disappears and changes to the same metallic glossy ink color as the metallic gloss information pattern region 5a.

In order to verify the effect of Example 4, the anti-counterfeit printed matter A18 was manufactured by Murakami Color Research Laboratory Co., Ltd., a variable-angle high-speed spectrophotometer GSP-2, using a D65 light source, and a hue of CIE chromaticity a ^* b ^*. FIG. 22 shows the result of measuring the brightness L ^* . FIG. 22 shows hues a ^* b ^* and lightness received at a light reception angle of 0 to 80 ° when the metal gloss information pattern region 5a, the metal gloss information pattern region 5b, and the metal gloss background region 6 are irradiated at an incident light angle of 45 °. L ^* . As in Example 3, in the hue a ^* b ^* , the red gloss color of + a ^* is exhibited in the metallic gloss information pattern region 5b using offset ink red at the light receiving angle of 0 ° in the diffused light amount region. At 45 ° light, it is affected by silver ink and shifts to a yellow color of + b ^* . Further, the metallic gloss information pattern area 5a using the offset OP mat varnish is an achromatic color at the center of the chromaticity diagram at the light receiving angle of 0 ° in the diffused light quantity region, but when the specular reflection light becomes 45 °, it is affected by silver ink. It approaches the hue of the metallic luster information pattern area 5b, making it difficult to distinguish with the naked eye. Further, at a light receiving angle of 70 °, which is an inclined observation angle, the yellowishness disappears and the hue changes in both the metallic gloss information pattern area 5a and the metallic gloss information pattern area 5b. On the other hand, in the lightness L ^* , the difference between the lightness L ^* of the metallic gloss information pattern areas 5a and 5b and the metallic glossy background area 6 at the light receiving angles 37.5 ° and 52.5 of the diffused light quantity area is the same as in the second embodiment. However, the brightness L ^* of the metallic glossy background region 6 was increased near the light receiving angle of 45 ° in the regular reflection light quantity region, and a large difference was generated from the metallic gloss information pattern regions 5a and 5b. Contrary to Example 3, the lightness L ^* of the metallic glossy background region 6 is high in the diffused light region, but there is almost no difference in the lightness L ^{* at} the light receiving angles of 37.5 ° and 52.5 °. In the vicinity of a light receiving angle of 45 °, the lightness L ^* of the metallic gloss information pattern areas 5a and 5b was lowered, and a significant difference from the metallic gloss background area 3 occurred.

(Example 5)
Prepare paper 1 with a smoothness of about 100 seconds, and print information pattern 2a with offset ink (Dainippon Ink Industries Co., Ltd. Scepter DT Ai) using an offset printer. The information pattern 2b was printed with Sex Scepter DT (red). Anti-counterfeiting printed matter A19 obtained by metallic glossy ink region 4 printed with silver ink (TOPSTAR silver silver manufactured by ECKART) at a dot ratio of 70% on background region 3 on information pattern 2a, information pattern 2b and its surroundings It is. The metallic gloss ink area 4 includes a metallic gloss information pattern area 5a printed on the information pattern 2a, a metallic gloss information pattern area 5b printed on the information pattern 2b, and a metal printed on the background area 3. It is divided into a glossy background area 6. When the anti-counterfeit printed matter A19 is observed by gradual tilting from the vertical direction to the horizontal direction with the naked eye under visible light, the metallic gloss information pattern area 5a is a metallic gloss background area due to the color mixture of metallic gloss ink and colored ink (indigo). It changes to the color of metallic glossy ink with higher brightness, and then gradually reverses continuously again to the mixed color of metallic glossy ink and colored ink (indigo). In addition, the metallic luster information pattern area 5b is lighter than the metallic luster background area 6 due to the color mixture of the metallic luster ink and the colored ink (red) when observed by tilting from the vertical direction to the horizontal direction with the naked eye under visible light. Changes to a color of high metallic glossy ink, and then gradually reverses continuously again to a mixed color of metallic glossy ink and colored ink (red). In this case, in the regular reflection light region, the colors of both the metallic gloss information pattern region 5a and the metallic gloss information pattern region 5b disappear and change to the color of the metallic gloss ink.

In order to verify the effect of Example 5, the anti-counterfeit printed matter A19 was manufactured by Murakami Color Research Laboratory Co., Ltd., a variable-angle high-speed spectrophotometer model GSP-2, using a D65 light source, and a hue of CIE chromaticity a ^* b ^*. The results of measuring the brightness L ^* are shown in FIG. FIG. 23 shows hues a ^* b ^* and lightness received at a light receiving angle of 0 to 80 ° when the metal gloss information pattern region 5a, the metal gloss information pattern region 5b, and the metal gloss background region 6 are irradiated at an incident light angle of 45 °. L ^* . In hue a ^* b ^* , when the light receiving angle of the diffuse light amount area is 0 °, the metallic gloss information pattern region 5b using the offset ink red shows a reddish color of + a ^*. The color shifts to a yellow color of + b ^* . In addition, the metallic gloss information pattern area 5a using the offset ink indigo has a bluish color of -b ^* at a light receiving angle of 0 ° in the diffused light quantity region, but when the specular reflection light becomes 45 °, the influence of the silver ink is present. When the light receiving angle is 70 °, which is closer to the central achromatic color on the chromaticity diagram, and the tilted observation angle is 70 °, both the metallic luster information pattern area 5a and the metallic luster information pattern area 5b disappear and the hue changes. . On the other hand, the lightness L ^*, but the lightness L ^* similarly metallic luster background region 6 in Example 1 is higher in the diffused light region, the light receiving angle 20 °, it is not nearly lightness L ^* difference in 75 °, the amount of specularly reflected light The brightness L ^* of the metallic gloss information pattern area 5a and the metallic gloss information pattern area 5b was increased near the light receiving angle of 45 °, and a significant difference from the metallic gloss background area 6 occurred.

(Example 6)
Prepare paper 1 with a smoothness of about 1400 seconds, and print the information pattern 2a with offset ink (Dainippon Ink Industry Co., Ltd. Scepter DT Ai) using an offset printing machine. The information pattern 2b was printed with Sex Scepter DT (red). Anti-counterfeit printed matter A20 obtained by metallic glossy ink region 4 overprinted with silver ink (TOPSTAR silver silver made by ECKART) at a dot ratio of 70% on information pattern 2a, background region 3 on and around information pattern 2b It is. The metallic gloss ink area 4 includes a metallic gloss information pattern area 5a printed on the information pattern 2a, a metallic gloss information pattern area 5b printed on the information pattern 2b, and a metal printed on the background area 3. It is divided into a glossy background area 6. When the anti-counterfeit printed matter A20 is observed with a naked eye under visible light while being tilted gradually from the vertical direction to the horizontal direction, the metallic gloss information pattern area 5a is a metallic gloss background area due to the mixture of metallic gloss ink and colored ink (indigo). It changes to the color of metallic glossy ink with higher brightness, and then gradually reverses continuously again to the mixed color of metallic glossy ink and colored ink (indigo). In addition, the metallic luster information pattern area 5b is lighter than the metallic luster background area 6 due to the color mixture of the metallic luster ink and the colored ink (red) when observed by tilting from the vertical direction to the horizontal direction with the naked eye under visible light. Changes to a color of high metallic glossy ink, and then gradually reverses continuously again to a mixed color of metallic glossy ink and colored ink (red). In this case, in the regular reflection light region, the colors of both the metallic gloss information pattern region 5a and the metallic gloss information pattern region 5b disappear and change to the color of the metallic gloss ink.

In order to verify the effect of Example 6, the anti-counterfeit printed matter A20 was manufactured by Murakami Color Research Laboratory Co., Ltd., a variable angle high-speed spectrophotometer GSP-2, using a D65 light source, and a hue of CIE chromaticity a ^* b ^*. FIG. 24 shows the results of measuring the brightness L ^* . FIG. 24 shows hues a ^* b ^* and lightness received at a light receiving angle of 0 to 80 ° when the metal gloss information pattern region 5a, the metal gloss information pattern region 5b, and the metal gloss background region 6 are irradiated at an incident light angle of 45 °. L ^* . In the same manner as in Example 4, in the hue a ^* b ^* , when the light receiving angle of the diffused light amount area is 0 °, the metallic gloss information pattern area 5b using the offset ink red exhibits a reddish color of + a ^* , but is regularly reflected. At 45 ° light, it is affected by silver ink and shifts to a yellow color of + b ^* . In addition, the metallic gloss information pattern area 5a using the offset ink indigo has a bluish color of -b ^* at a light receiving angle of 0 ° in the diffused light quantity region, but when the specular reflection light becomes 45 °, the influence of the silver ink is present. Thus, the hue of the metallic luster information pattern area 5b approaches the hue of the light receiving angle of 45 °, and it becomes difficult to discriminate with the naked eye. Further, at a light receiving angle of 70 °, which is an inclined observation angle, the yellowishness disappears and the hue changes in both the metallic gloss information pattern region 5a and the metallic gloss information pattern region 5b. On the other hand, in the lightness L ^* , the difference between the lightness L ^* of the metallic gloss information pattern regions 5a and 5b and the metallic glossy background region 6 at the light receiving angles of 37.5 ° and 52.5 ° in the diffused light amount region as in the second embodiment. However, the brightness L ^* of the metallic glossy background region 6 was increased near the light receiving angle of 45 ° in the regular reflection light quantity region, and a large difference was produced from the metallic gloss information pattern regions 5a and 5b. Contrary to Example 5, the lightness L ^* of the metallic glossy background region 6 is high in the diffused light region, but there is almost no difference in the lightness L ^{* at} the light receiving angles of 37.5 ° and 52.5 °. In the vicinity of a light receiving angle of 45 °, the lightness L ^* of the metallic gloss information pattern areas 5a and 5b was lowered, and a significant difference from the metallic gloss background area 6 occurred.

(Example 7)
Prepare 20 sheets of paper with different smoothness, and print the information pattern on each sheet with offset printing machine (Scepter DT Transparent Yellow, manufactured by Dainippon Ink Industries, Ltd.), then on and around the information pattern The background area was printed with silver ink (TOPSTAR UV silver manufactured by ECKART) and the metallic gloss ink area was overprinted with a mesh screen to obtain a forgery-preventing printed matter. The smoothness and gloss of each anti-counterfeit print were measured. The metallic gloss ink area is divided into a metallic gloss information pattern area printed on the information pattern upper area and a metallic gloss background area printed on the background area. In addition, the measuring machine used for the measurement of the smoothness is a Digibeck smoothness tester DB-2 type manufactured by Toyo Seiki Seisakusho Co., Ltd., and the glossiness is measured by a digital gloss meter (GM-3D type manufactured by Murakami Color Research Laboratory Co., Ltd.). )It was used.

The glossiness shown in Table 1 is obtained by measuring the incident light at 60 ° and the reflected light at 60 °. Y shown in Table 1 is a yellow printing region of only offset ink (yellow), Ag is a metallic gloss background region of only silver ink, and Y + Ag is a metallic gloss information pattern region in which silver ink is formed on the yellow printing region. Each smoothness and glossiness are shown. As shown in Table 1, in the printed matter in which the smoothness of the paper is less than 1000 seconds, the Y + Ag region has higher smoothness than the Ag region, and the Y + Ag region has higher gloss than the Ag region. I understand. It can be seen that the yellow printing area has a higher smoothness than the paper smoothness. Further, it can be seen that in the printed matter in which the smoothness of the paper is 1000 seconds or more, the Y + Ag region has lower smoothness than the Ag region, and the Y + Ag region has lower gloss than the Ag region. It can be seen that the yellow print area has a lower smoothness than the paper smoothness. Therefore, the level of smoothness of the Y + Ag region and the Ag region is reversed between the printed matter having a paper smoothness of less than 1000 seconds and the printed matter having a paper smoothness of 1000 seconds or more. Therefore, there is a difference in the appearance of the information pattern between the regular reflection area and the diffusion area between a printed matter having a paper smoothness of less than 1000 seconds and a printed matter having a paper smoothness of 1000 seconds or more.

However, since the smoothness and glossiness on the printing region vary depending on the ink film thickness, the numerical values of the examples are not particularly limited.

It is a figure which shows the schematic diagram of the forgery prevention printed matter A1 of this invention, its X-X 'sectional drawing, and the one part enlarged view. FIG. 3 is a diagram showing a case where the anti-counterfeit printed matter A1 of the present invention is observed from the vertical direction with the naked eye. FIG. 3 is a diagram showing a case where the forgery prevention printed matter A1 of the present invention is observed with the naked eye while being gradually tilted from the vertical direction to the horizontal direction. It is a figure which shows the schematic diagram of the forgery prevention printed matter A2 of this invention, its X-X 'sectional drawing, and the one part enlarged view. It is a figure which shows the case where the forgery prevention printed matter A2 of this invention is observed from the perpendicular direction with the naked eye. FIG. 6 is a diagram showing a case where the anti-counterfeit printed matter A2 of the present invention is observed while being gradually tilted from the vertical direction to the horizontal direction with the naked eye. It is a figure which shows the schematic diagram of the forgery prevention printed matter A3 of this invention, its X-X 'sectional drawing, and the one part enlarged view. It is a figure which shows the case where the forgery prevention printed matter A3 of this invention is observed from a perpendicular direction with the naked eye. FIG. 6 is a diagram showing a case where the forgery-preventing printed matter A3 of the present invention is observed with the naked eye while being gradually tilted from the vertical direction to the horizontal direction. It is a figure which shows the schematic diagram of the forgery prevention printed matter A4 of this invention, its X-X 'sectional drawing, and the one part enlarged view. It is a figure which shows the case where the forgery prevention printed matter A4 of this invention is observed from the perpendicular direction with the naked eye. FIG. 6 is a diagram showing a case where the anti-counterfeit printed matter A4 of the present invention is observed with the naked eye while being gradually tilted from the vertical direction to the horizontal direction. FIG. 6 is a diagram illustrating a forgery prevention printed matter A5. It is a figure which shows the change of the lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 1 is irradiated with the incident angle of 45 degrees. It is a figure which shows the information pattern of the design different from Example 1. FIG. It is a figure which shows the metallic luster ink area | region of the design different from Example 1. FIG. It is a figure which shows the forgery prevention printed matter A6-A10. It is a figure which shows the forgery prevention printed matter A11. It is a figure which shows the change of the lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 2 is irradiated with the incident angle of 45 degrees. It is a figure which shows the forgery prevention printed matter A17. It is a figure which shows the change of hue a ^* b ^* and lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 3 is irradiated with an incident angle of 45 degrees. It is a figure which shows the change of hue ab ^* and lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 4 is irradiated with an incident angle of 45 degrees. It is a figure which shows the change of hue a ^* b ^* and lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 5 is irradiated with an incident angle of 45 degrees. It is a figure which shows the change of hue a ^* b ^* and lightness L * in the light reception angle of 0-80 degrees when the D65 light source of Example 6 is irradiated with an incident angle of 45 degrees.

Explanation of symbols

A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20 Anti-counterfeit printed matter
1 paper
2, 2a, 2b information pattern
3 Background area
4 Metal gloss ink area
5, 5a, 5b Metal gloss information pattern area
6 metallic glossy background area
7 Fine irregularities
8 Smooth surface
I1, I1 'Incident light
I2, I2 'diffuse reflection
I3, I3 'specular light

Claims (2)

Forming at least one information pattern higher or lower than the smoothness of the substrate with at least one colored ink on the substrate;
The background area on and around the information pattern is overprinted with metallic gloss ink to form a metallic gloss ink area,
The metallic gloss information pattern area printed on the information pattern is formed by a halftone dot, a line drawing, a mesh screen, a white line screen or a contact screen having a non-image portion or a non-dot portion,
The metallic gloss ink area is a forgery-preventing printed matter divided into a metallic gloss information pattern area printed on the information pattern and a metallic gloss background area printed on the background area ,
When the anti-counterfeit printed matter is observed by tilting from the vertical direction to the horizontal direction with the naked eye under visible light, the metallic gloss information pattern area is a mixture of the metallic gloss ink and at least one color ink. An anti-counterfeit printed matter which changes to the color of glossy ink and is further visually reversible and gradually reversed again to a mixed color of the metallic glossy ink and at least one color ink. The anti-counterfeit printed matter according to claim 1, wherein the metallic gloss ink comprises silver ink and / or gold ink.

Images