JP2016137658A - Forgery preventive printed matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latent image intaglio printed matter in which a latent image appears by a difference in glossiness in printed images using only general color inks, relating to latent image intaglio printing characterized in that a printed matter by intaglio printing includes a latent image that appears by varying observation angles of the printed matter.SOLUTION: A latent image intaglio printed matter includes a latent image region in at least a part on a substrate, in which the latent image region includes a first image formed by a coloring material having a first color and a second image formed by regularly formed at a given pitch or with a picture line width by intaglio printing on the first image. The second image includes a latent image portion where a plurality of picture lines are formed along a first direction and a background portion where a plurality of lines are formed in a second direction orthogonal to the first direction. When the printed matter is observed from above, the latent image is not observed, however, when the printed matter is tilted and observed, the latent image can be observed by differences in glossiness in the latent portion, the background portion and a non-picture line portion.SELECTED DRAWING: Figure 5

Description

  The present invention provides a counterfeit having a latent image intaglio in which a latent image is observed when the printed material is tilted and observed on banknotes, passports, securities, gift certificates, and various certificates for the purpose of preventing forgery and copying. For preventing printed matter, compared to conventional latent image intaglio, forgery prevention where latent image is observed due to gloss difference between substrate and printed image line even when the angle of inclination of the printed material is shallow when observing latent image It relates to printed matter.

  Precious printed matter such as banknotes, passports, securities, gift certificates and various certificates are required not to be counterfeited or tampered with, and anti-counterfeiting technology is adopted for the purpose of preventing them. For example, watermarks or threads applied in the paper manufacturing process, minute characters or pearl printing applied in the printing process, and holograms or laser drilling applied in another process after the printing process are representative.

  Among these techniques, latent image intaglio is one of anti-counterfeiting techniques that are relatively inexpensive and have high anti-counterfeiting power (see, for example, Patent Document 1). The reason for this is that many counterfeiters often produce counterfeit products with a simple output machine such as a printer, and therefore can only produce counterfeit products with a two-dimensional configuration with a low ink film thickness. It is.

  The latent image intaglio has a three-dimensional structure because the latent image pattern is formed by regularly arranging swelled lines in the vertical and horizontal directions, and has a swell when observed from a specific direction. By compressing and uncompressing the image line, a density difference is generated between the image line in the vertical direction and the image line in the horizontal direction so that the latent image can be visually recognized. On the other hand, a counterfeit product using a printer cannot form a raised image line, so copying the genuine product does not cause a difference in density between the vertical and horizontal image lines. Forgery can be made difficult.

  Here, the structure of the printed matter 1 ′ of the known latent image intaglio 3 ′ will be described with reference to the drawings. FIG. 1 shows a configuration of a printed product 1 ′ of a latent image intaglio 3 ′ formed by intaglio printing, in which a latent image intaglio 3 ′ is formed on a substrate such as paper. As shown in FIG. 1A, the printed material 1 ′ includes a latent image portion 6 ′ and a background portion 7 ′, and includes a plurality of horizontal lines 6L of the latent image portion 6 ′ and a plurality of vertical images of the background portion 7 ′. The line 7 </ b> L is regularly formed and formed with a raised image line. The image line width 6W of the horizontal image line 6L of the latent image portion 6 ′ and the image line width 7W of the vertical image line 7L of the background portion 7 ′ are formed with the same image line width. Also, the image line pitch 6P of the horizontal image line 6L and the image line pitch 7P of the vertical image line 7L are formed in the same manner. FIG. 1B is an enlarged view of the rectangular portion of FIG.

  Next, the latent image of the printed material 1 ′ will be described with reference to FIGS. FIG. 2 shows an observation direction with respect to the printed matter 1 ′. The observation direction U is a state in which the latent image intaglio 3 ′ is viewed from directly above, and the observation direction N is an oblique direction with respect to the latent image intaglio 3 ′. It is what was visually recognized. At this time, in the observation direction U, the latent image “T” cannot be visually recognized because the area ratios per unit area of the latent image portion 6 ′ and the background portion 7 ′ are the same.

  Next, the case where it visually recognizes from the observation direction N is demonstrated. First, when the latent image intaglio 3 ′ is viewed from the direction S2, as shown in FIG. 3A, the horizontal image line 6L of the latent image portion 6 ′ is perpendicular to the observation direction. By concealing part or all of the non-image area, the apparent visual density increases. On the other hand, since the vertical image line 7L of the background portion 7 'is parallel to the observation direction, the density of the non-image area does not change. As a result, a density difference is generated in each region, and the latent image “T” composed of the latent image portion 6 ′ can be visually recognized.

  On the other hand, when the latent image intaglio 3 ′ is viewed from the direction S3, the image line configuration is opposite to that in the first observation direction, so that it is as shown in FIG. 3B, which is opposite to FIG. 3A. A latent image with negative-positive reversal is observed.

  In addition, the present applicant has applied for a technique in which a latent image appears as a printed matter having a configuration different from that of the above-described latent image intaglio (for example, see Patent Document 2).

  The printed matter of Patent Document 2 forms a latent image portion and a background portion in which convex image lines having a pearl pigment having a planar orientation are regularly arranged, so that the diffuse reflection light is dominant in the observation angle. The printed matter can be viewed by changing the image according to the difference in the amount of reflected light from the image line when observed at an observation angle and when observed at an observation angle where specular reflection light is dominant.

Japanese Patent Publication No. 56-19273 Japanese Patent No. 3718712

  However, when the latent image intaglio 3 ′ of Patent Document 1 is viewed from the observation direction N, the latent image “T” can be viewed by the difference in density between the latent image portion 6 ′ and the background portion 7 ′. However, when the image height of the intaglio image line forming the latent image “T” is small, the angle at which the printed material 1 ′ is inclined becomes extremely large, and the latent image “T” cannot be observed instantaneously. Was left.

  In addition, since the latent image appears in the printed matter of Patent Document 2 due to the difference in gloss from the image line, the latent image can be confirmed relatively easily, but a special material such as a pearl pigment having a planar orientation. Since it is indispensable to use, the subject that the production cost increased was left.

  The present invention is an invention created to solve the above-described problems. By using a conventional intaglio ink to form a latent image intaglio of the prior art without using a special material, the image area portion and the non-image area can be prevented. The present invention relates to a forgery-preventing printed material that allows a latent image to be observed even when a gloss difference occurs in an image line portion and the angle at which the printed material is inclined is shallow.

  The anti-counterfeit printed matter of the present invention has a first printing area and a second printing area on at least a part of the substrate, and the second printing area so as to overlap with at least a part of the first printing area. The anti-counterfeit printed matter on which the latent image is formed is formed in the first printing area with a colorless or colored ink having a glossiness different from that of the base material and an area ratio of 50 to 100%. A latent image portion in which one print image is formed, and a plurality of first image lines are formed in the second print area that regularly rise along the first direction at a constant pitch and a constant image line width. And a plurality of second image lines having the same pitch, the same image line width, and the same raised height as the first image line regularly along a second direction different from the first direction. Forgery prevention, characterized in that a second printed image having a patterned background portion is formed Is Surimono.

  In addition, the first print image in the forgery-preventing printed material of the present invention has a larger area or the same area as the second print image, and the second print image is only on the region where the first print image is formed. It is a forgery-proof printed matter characterized by being formed.

  The anti-counterfeit printed matter of the present invention is a conventional latent image intaglio by applying a first printed image having a glossiness different from that of the substrate and a high area ratio to the lower layer forming the latent image intaglio image line. Since the difference between the non-image area in the latent image intaglio image line, the image line forming the latent image intaglio image, and the surface of the substrate is generated only by forming on the first image, the printed material is inclined. Even if the angle is shallow, the latent image can be observed instantaneously, so that more accurate authenticity determination can be performed.

The figure which shows an example of the image line structure of the conventional latent image intaglio Diagram showing the observation direction of printed matter A view of a conventional printed product viewed from a predetermined viewing direction The figure which shows an example of the printed matter in 1st Embodiment The figure which shows the enlarged view of the latent-image intaglio part in 1st Embodiment Diagram showing the observation direction of printed matter The figure which shows an example of the form of a 1st image The figure which shows the printed matter in 2nd Embodiment The figure which shows the enlarged view of the latent-image intaglio part in 2nd Embodiment The figure which visually recognized the printed matter in 2nd Embodiment from the predetermined observation direction The figure which shows the modification of 2nd Embodiment The figure which shows the enlarged view of the latent-image intaglio part in 3rd Embodiment

  Embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments to be described below, and includes various other embodiments within the scope of the technical idea described in the claims.

  The anti-counterfeit printed matter of the present invention has a first image having a predetermined printing density, and is formed by overlapping a latent image portion and a background portion that form a latent image intaglio on at least a part of the first image. It is a thing. In the latent image intaglio formed on the first image, the glossiness from the first image visually recognized from the non-image portion of the latent image portion and the background portion forms the substrate surface, the latent image portion and the background portion. The image surface is different from the glossiness of the image line, so that the latent image can be visually recognized by the difference in gloss even when the printed image is inclined so that the latent image is not confirmed in the conventional latent image intaglio. is there.

  The first image may be any image as long as an intaglio printing line can be formed on the first image, such as offset printing, flexographic printing, gravure printing, letterpress printing, screen printing, and ink jet printing. A known printing method can be used and is not particularly limited.

  The coloring material for forming the first image may be a general colored ink, and it is not necessary to use a special ink containing a high-gloss metal material or a pearl pigment. The color of the ink forming the first image may be the same as or different from the color of the ink forming the latent image intaglio and has a glossiness different from that of the substrate surface and the latent image intaglio image line. There is no particular limitation as long as it is formed as a state.

  Further, since the first image needs to be observed as a state different from the glossiness of the surface of the image line forming the latent image portion and the background portion formed on the first image and the glossiness of the substrate, The area ratio needs to be 50 to 100%. When the area ratio is less than 50%, the difference in gloss observed from the surface of the base material, the latent image portion, and the first image surface observed from the non-image portion of the background portion is reduced, and the surface is tilted at a shallow angle. This is because the visibility of the latent image is reduced. In the present invention, the area ratio is a ratio of pixels or image area formed in a certain area on the substrate.

  More preferably, the area ratio may be set to 70 to 95%. This is because, by setting the area ratio to 70% or more, the area of the first image visually recognized from the non-image portion of the latent image portion and the background portion can be increased. On the other hand, by setting it to 95% or less, it is possible to improve the adhesion of the intaglio printing image line forming the latent image portion and the background portion formed on the first image.

  The latent image portion and the background portion that form the latent image intaglio have the same configuration as a known latent image intaglio, and a plurality of regular pitches, image widths, and image heights along the first direction. A background formed by a plurality of image lines having the same pitch, image line width, and image line height as the latent image portions along a second direction different from the first direction, and a latent image part formed by the image lines. When the latent image intaglio is observed from the first direction U, both the latent image portion and the background portion are observed as the same density, but when the printed matter is observed at the second observation angle N, Since the latent image portion and the non-image portion of the background portion are visually recognized as different densities, the latent image is observed.

  The ink for forming the latent image intaglio is only required to form an image line having a colored bulge, and it is not necessary to use a special ink containing a high-gloss metal material or a pearl pigment. The hue of the ink forming the latent image intaglio may be the same as or different from the hue of the first image, but is preferably a high-density image line such as black, brown, dark green, dark blue, etc. Therefore, it is possible to suppress the influence on the image visually recognized when the first image formed on the lower part of the latent image intaglio is observed from directly above.

(First embodiment)
An anti-counterfeit printed matter (hereinafter referred to as “printed matter”) according to the first embodiment of the present invention will be described with reference to FIG. The printed matter 1 of the first embodiment is a banknote-type printed matter 1 in which a fee 2, a latent image intaglio 3 and a portrait 4 are formed on a substrate, and the latent image intaglio 3 portion is raised by intaglio printing. The image line having a line is regularly formed with a predetermined image line width, image line pitch, and image line height. In addition, the printed matter 1 in the first embodiment has a tint block print image line (not shown) that is less prominent by offset printing, and the first image is formed below the latent image intaglio 3 portion. Is formed.

  FIG. 5 shows the structure of the latent image intaglio 3 portion of the printed material 1 in the first embodiment. FIG. 5A shows the first image formed by a solid image line (area ratio 100%). Image 5 and FIG. 5B show the latent image portion 6 and the background portion 7 of the latent image intaglio 3. The image lines of the latent image portion 6 and the background portion 7 are image lines having a bulge formed by intaglio printing. By making the height of the bulge, the line width, and the line pitch equal, When observed at the observation angle U of 1, the latent image portion 6 and the background portion 7 do not produce a density difference and are observed as the same density, but when the printed matter 1 is observed at the second observation angle, The non-image portion of the latent image portion 6 is compressed by the rising of the image line and becomes high density, but the non-image portion of the background portion 7 does not change even when the printed material 1 is tilted. A density difference is generated between the non-image portion of the latent image portion 6 and the latent image is visually recognized.

  FIG. 5C shows an enlarged view of a portion where the latent image portion 6 and the background portion 7 that form the latent image intaglio 3 on the first image 5 are formed. The latent image portion 6 and the background portion are shown in FIG. The first image 5 formed in a solid shape is visually recognized from the non-image portion 7. Since the glossiness from the surface of the first image 5 visually recognized from the non-image line portion is different from the surface of the substrate and the image line surface forming the latent image intaglio 3, the printed matter 1 when the latent image is visually recognized is obtained. Even if the tilt angle is shallow, the latent image can be visually recognized.

  FIG. 6 shows an observation angle at which the latent image is visually recognized in the printed matter 1 of the present invention, and the angle at which the printed matter 1 is inclined is smaller than the second observation angle N at which the conventional latent image intaglio is observed. Even when the observation angle M is 3, a latent image is formed by the difference between the glossiness of the surface of the first image 5 described above and the glossiness of the surface of the substrate and the image surface forming the latent image intaglio 3. It is something that can be done.

  The area ratio of the first image 5 needs to be 50 to 100%. The solid image line in FIG. 7A (area ratio 100%) and the striped pattern in FIG. 7B (area ratio 90%). About the shape, such as the lattice pattern (area ratio 90%) in FIG. 7 (c), the checkered pattern (area ratio 50%) in FIG. 7 (d) and the arbitrary pattern (area ratio 90%) in FIG. It does not specifically limit, The effect of this invention can be acquired by setting an area rate to 50 to 100%.

(Second Embodiment)
Next, the printed material 1 in the second embodiment will be described. The printed matter of the second embodiment is such that only the area where the latent image intaglio in the first image 5 is printed is outlined, and the latent image portion 6 and the background portion forming the latent image intaglio 3 are formed. Since the configuration of 7 is the same as that of the first embodiment, the description thereof is omitted.

  FIG. 8 shows a printed matter 1 according to the second embodiment, which is a gift certificate type printed matter 1 in which a fee 2, a latent image intaglio 3 and a portrait 4 are formed on a substrate. The latent image intaglio 3 portion is formed with the first image formed on the ground, but the latent image portion 6 and the background portion 7 that form the latent image intaglio 3 are superimposed on the white portion of the first image 5. Therefore, it is observed that only the lines of the latent image portion 6 and the background portion 7 are formed. 8 is illustrated so that the latent image (character “T”) formed by the latent image portion 6 is observed, but the printed material 1 is observed from the first observation angle U. In this case, since the non-image portion of the latent image portion 6 and the background portion 7 is observed as the same, the latent image intaglio 3 portion including the latent image portion 6 and the background portion 7 is observed as the same density. “T” is not observed.

  On the other hand, when the image is observed at the second observation angle N or the third observation angle M from the S2 direction in FIG. 8, the latent image portion 6 orthogonal to the observation direction is caused by the rising of the lines of the latent image portion 6 and the background portion 7. The non-image area is compressed to a high density, so that the latent image “T” is observed.

  FIG. 9 is an enlarged view of the latent image intaglio 3 portion of FIG. 8, and shows the configuration of the first image 5, the latent image portion 6 and the background portion 7 formed on the latent image intaglio 3 portion. is there. FIG. 9A shows the first image 5 in which regions corresponding to the latent image portion 6 and the background portion 7 are formed in a white state, and FIG. 9B shows the latent image intaglio 3. The image lines of the latent image portion 6 and the background portion 7 to be formed are shown, and the image line direction, pitch, image line width, and image line height are the same as those in the first embodiment.

  FIG. 9C shows a state in which the latent image intaglio 3 shown in FIG. 9B is printed on the first image 5 shown in FIG. By forming the latent image portion 6 and the background portion 7 in the white portion formed in FIG. 5, it can be observed as a state similar to that in FIG. 5C described in the first embodiment. .

  Since the printed matter in the second embodiment has white areas only in the areas where the latent image portion 6 and the background portion 7 of the latent image intaglio 3 of the first image 5 are printed as described above, the latent image intaglio is used. Since the ink of the latent image portion 6 and the background portion 7 that form 3 can be set on the base material, the adhesion of the intaglio image lines of the latent image portion 6 and the background portion 7 can be improved.

  In addition, as in the first embodiment, the same effect can be obtained as when all the non-image areas of the latent image intaglio 3 are solid (area ratio 100%), so the latent image intaglio 3 is observed. The first image line observed from the non-image area of the substrate surface and the latent image intaglio 3 even when the print 1 is inclined at a shallow angle, that is, when viewed at the third observation angle M. Since a high gloss difference is generated on the surface, the latent image can be visually recognized.

  FIG. 10 shows a state in which the latent image intaglio 3 formed on the printed matter 1 in the second embodiment is observed from a predetermined direction. FIG. 10A shows the printed matter 1 observed from the S2 direction in FIG. Similarly, as shown in FIG. 10B, even when the printed matter 1 is observed from the S3 direction at the third observation angle M, the latent image portion 6 and the background portion 7 are visually recognized. It is possible to observe a latent image with the density reversed. When the known latent image intaglio 3 ′ is observed at the third observation angle, the latent image cannot be observed because there is almost no difference in density between the latent image portion 6 ′ and the background portion 7 ′.

  Further, FIGS. 10C and 10D show the state observed at the second observation angle N, and the negative positive with a large density difference between the latent image portion 6 and the background portion 7 in each observation direction. The inverted latent image can be visually recognized.

  FIG. 11 shows a modification of the second embodiment. In the second embodiment, the white portion formed in the first image 5 and the image line forming the latent image portion 6 and the background portion 7 are shown. Although the widths are the same, in this case, if the latent image portion 6 and the background portion 7 formed on the first image 5 do not completely coincide with each other, the non-image lines of the latent image portion 6 and the background portion 7 are partially obtained. Since a white portion is observed in the portion, the area ratio of the first image 5 in the non-image portion of the latent image portion 6 and the background portion 7 cannot be set to 100%. Even if some white portions are present in the first image 5 in the non-image area, it does not affect the visibility of the latent image, but the latent image is not visible when viewed from the first observation direction U. An image similar to the image image is visually recognized.

  In the modification of the second embodiment, as shown in FIG. 11, the width of the white portion formed in the first image 5 is set to be narrower than the line width forming the latent image portion 6 and the background portion 7. Thus, even if the center (not shown) of the white portion in the first image 5 and the center portion (not shown) of the image line forming the latent image portion 6 and the background portion 7 do not coincide with each other, the white portion is white. In order to prevent the portion from appearing in the non-image portion, the width of the white portion is set to be narrower than the image width that forms the latent image portion 6 and the background portion 7 in advance.

  As in the modification of the second embodiment, by setting the width of the white portion narrow, the problem that the latent image is visually recognized when viewed from the first observation angle due to printing misalignment is solved. This is a preferable mode because it can obtain the adhesion of the intaglio image line forming the latent image portion 6 and the background portion 7.

(Third embodiment)
Next, the printed material 1 in the third embodiment will be described. The latent image intaglio 3 in the third embodiment is a gift certificate type printed matter 1 as in the second embodiment, and the images of the latent image portion 6 and the background portion 7 formed on the latent image intaglio 3 portion. The line configuration is also the same as the line configuration in the first embodiment and the second embodiment, and a description thereof will be omitted.

  FIG. 12 is an enlarged view of the latent image intaglio 3 portion in the printed material 1 of the third embodiment, and shows the first image 5, the latent image portion 6 and the background portion 7 in the latent image intaglio 3 region. It is. FIG. 12A shows the first image 5 in which a white print pattern is formed in the solid area.

  FIG. 12B shows the image lines of the latent image portion 6 and the background portion 7, and has the same image line configuration as in the first and second embodiments. FIG. 12A shows a state in which the latent image portion 6 and the background portion 7 in FIG. 12B are formed on the first image 5 in FIG. In FIG. 12, the first image 5 and the latent image intaglio image line having the latent image portion 6 and the background portion 7 are shown to have the same size, but the first image 5 is larger than the latent image intaglio 3. Is larger, and the first image 5 larger than the latent image intaglio is formed, so that it is continuous over the periphery of the latent image intaglio 3 without considering the size of the latent image intaglio 3 area to be printed on the upper part. A background pattern can be formed.

1, 1 'Printed matter 2 Fee 3, 3' Latent image intaglio 4 Portrait 5 First image 6, 6 'Latent image portion 6L Horizontal image line 7, 7' Background portion 7L Vertical image line P, 6P, 7P Image line Pitch W, 6W, 7W Line width U First observation angle N Second observation angle M Third observation angle

Claims (2)

By having the first print area and the second print area on at least a part of the base material, and forming the second print area so as to overlap at least a part of the first print area. An anti-counterfeit printed material on which a latent image is formed,
In the first print region, a first print image having an area ratio of 50 to 100% is formed by colorless or colored ink having a glossiness different from that of the substrate.
The second print area includes a latent image portion in which a plurality of first image lines having a regular pitch and a constant image line width are formed along the first direction, and the first direction. A background portion on which a plurality of second image lines having the same pitch, the same image line width, and the same raised height as the first image line are regularly formed along a second direction different from An anti-counterfeit printed matter in which a second print image is formed.   The first print image has a larger area or the same area as the second print image, and the second print image is formed only on a region where the first print image is formed. The forgery-preventing printed matter according to claim 1.

Images