JP4442320B2 - Intaglio printed matter having latent image pattern - Google Patents

Description

  The present invention relates to an intaglio printed matter having a latent image pattern to be applied as a preventive measure against counterfeiting / duplication on a seal for products and tags as well as securities such as stock certificates and gift certificates.

  Conventionally, in addition to securities such as stock certificates, gift certificates, and credit cards, printing using sophisticated printing technology (including intaglio printing) to prevent unauthorized use due to counterfeiting and duplication, such as seals and tags for products ), Etc. were generally applied, but in view of the frequent occurrence of unauthorized use due to forgery and copying in recent years, special anti-counterfeiting measures have been taken in addition to these sophisticated printing, etc. .

  As a special forgery prevention measure, for example, there is a method of pasting a hologram, applying a material or an image that develops an ultraviolet ray, and determining the authenticity by irradiating with an ultraviolet ray, or a metal foil layer with different line directions. This is an embossed pattern in which multiple groups of linear concavo-convex patterns are formed, and the shading and brightness of the line-shaped concavo-convex patterns change when the viewing angle is changed. As a method of pasting or as one of the techniques using the above elaborate printing technology, a latent image pattern consisting of fine line-shaped convex portions with fine pitch is applied to securities etc. There is anti-counterfeiting technology (intaglio printing) that looks like a simple strip when viewed, but a latent image pattern appears when the securities are tilted or viewed from different viewpoints.

  The intaglio printed matter having the latent image pattern will be described in more detail. For example, as shown in FIG. 9A, the region of the pattern of the letter “convex” has a line-shaped convex portion (in the horizontal (horizontal) direction) 10), and the area other than the latent image portion (20) is a background portion (22) composed of line-shaped convex portions (12) extending in the vertical (vertical) direction. When the intaglio printed material is observed obliquely from the front (viewpoint A), as shown in FIG. 9B, the “convex” character as the latent image portion (20) appears on the background portion (22). It is imaged (appears floating). Further, when the intaglio printed matter is observed obliquely from the rear (viewpoint B), as shown in FIG. 9C, the upside down character of the “convex” as the latent image portion (20) appears on the background portion (22). As shown in FIGS. 9 (d) and 9 (e), the image is observed from the upper right side (view point C) and the upper left side (view point D). Then, the “convex” character that is the latent image portion (20) is visualized white (negatively) on the background portion (22) (appears to emerge), but from any other position. There is an intaglio printed material that can be seen only as a fine pattern even when observed (see, for example, Patent Document 1).

  At the time of development of any of the above methods, even if a copy was made by making full use of a color copier or a scanner, the copy was difficult and effective technology for preventing counterfeiting.

The above prior art documents are shown below.
JP 2002166666 (paragraphs 0003 to 0005, FIGS. 4 and 5)

However, recently, the hologram technology and the technology for determining authenticity by ultraviolet irradiation have been generalized, and forgery and duplication have become relatively easy. Further, even in the technique using the above-mentioned opal effect, the shape of a line can be read relatively easily. With this technique and a machine, forgery and duplication have become easy.

  Furthermore, the intaglio printed material having the latent image pattern composed of the above-mentioned line-shaped convex portions generally has a quality and heavyness that can express gradation by the depth, width, and interval of the image line, Duplication by intaglio printing is difficult because the technology and equipment are not generalized, but because the pattern of the latent image portion itself is relatively simple, we noticed intaglio printed matter having the latent image pattern, and some knowledge Can be produced by a person who has the technology, and, in addition, by overlapping the toner several times by color copying, etc., except for quality and heavyness, a certain degree of reproduction (copying) including touch feeling However, it was problematic in terms of preventing counterfeiting and duplication. Furthermore, since the latent image pattern is simple and has only one, there is a problem that there is a limitation in terms of design.

  The present invention solves the problems of the prior art, and the problem is that the latent image pattern is a line-shaped convex portion extending in a predetermined direction for taking measures to prevent forgery of securities and the like. In the intaglio printed matter composed of a line-shaped convex portion extending in the vertical direction with respect to this latent image pattern, a latent image pattern that is extremely difficult to counterfeit / reproduce and has a design freedom. It is to provide an intaglio printed matter.

In order to achieve the above-mentioned object in the present invention, first, in the invention of claim 1, an intaglio printed matter printed with an intaglio ink having a predetermined pitch and line width and extending in a predetermined direction. A latent image pattern composed of line-shaped convex portions, and a fine line-shaped line having a pitch and line width substantially the same as the latent image pattern outside the area of the latent image pattern and extending in a direction perpendicular to the latent image pattern The intaglio printed matter composed of the convex portion and the background portion is assumed to be one image, and a plurality of images having substantially the same pitch and line width each constitute a line-shaped convex portion and a background portion of the latent image pattern. The line-shaped convex parts of the other images are removed between every other line-shaped convex part that forms the background part of each synthesized image by shifting the angles of the convex parts. An intaglio printed matter having a latent image pattern characterized by the above.

According to a second aspect of the present invention, the intaglio printed matter having a latent image pattern according to the first aspect is characterized in that the angle at which the plurality of images are combined is 45 ° ± 15 °.

According to a third aspect of the present invention, there is provided an intaglio print having a latent image pattern according to any one of the first or second aspect, wherein the shapes of the latent image patterns constituting the plurality of images are different from each other. It is.

According to a fourth aspect of the present invention, the line-shaped convex portions constituting the plurality of images are printed with an intaglio ink containing an optically variable substance. An intaglio printed matter having the latent image pattern described in 1 above.

  Furthermore, in the invention of claim 5, the optically variable substance is a fluorescent pigment or an infrared absorbing substance, and the intaglio printed matter having a latent image pattern according to claim 4 is provided.

  Since this invention is the above structure, there exist the following effects.

That is, according to the first aspect of the present invention, an intaglio printed matter printed with intaglio ink has a predetermined pitch and line width, and is a latent line consisting of fine line-shaped convex portions extending in a predetermined direction. An image pattern, and a background portion having fine line-shaped convex portions that have substantially the same pitch and line width as the latent image pattern outside the area of the latent image pattern and extend in a direction perpendicular to the latent image pattern. The intaglio printed material to be configured is one image, and the angle between the line-shaped convex portions of the latent image pattern and the line-shaped convex portions of the background portion, each of which includes a plurality of images having substantially the same pitch and line width, is shifted And intaglio printed matter in which the line-shaped convex portions of other images between every other line-shaped convex portions forming the background portion of the combined images are removed. A single latent image pattern and a background portion of a conventional image have a plurality of latent image patterns. Made of a plurality of images consisting of emissions and the background portion, since those complicated correction of each image, though even a person of knowledge and technology Sorerari forgery-duplication becomes extremely difficult, and the latent image pattern When an intaglio printed matter having a latent image pattern is given a degree of freedom, a plurality of latent image patterns are visualized and emerged when viewed from a plurality of locations (viewpoints). it can.

According to the second aspect of the present invention, the angle at which the plurality of images are combined is 45 ° ± 15 °, respectively, so that the plurality of latent image patterns are sharp when viewed from a plurality of locations (viewpoints). It is possible to obtain an intaglio printed matter having a latent image pattern that is visualized and appears as if it is (clear).

If the combined angle exceeds the range of 45 ° ± 15 °, the difference in angle between the plurality of intaglio printing images becomes too small, and as a result, a latent image pattern visualized (floating image) from the perspective from each viewpoint is obtained. There is a risk that the latent image pattern of the perspective view from the adjacent viewpoint is too close and overlapped, and the sharpness of the visible image is lacking.

According to the third aspect of the present invention, the shape of the latent image pattern constituting the plurality of images is made different from each other, so that even a person who has knowledge and technology of the same forges and duplicates. In addition, the intaglio printed matter having this latent image pattern is more difficult to design and the latent image pattern with different shapes is visualized and emerged when viewed from multiple points (viewpoints). An intaglio printed matter having a latent image pattern with a degree of freedom can be obtained.

Further, according to the invention according to claim 4, since the line-shaped convex portions constituting the plurality of images are printed with the intaglio ink containing the optically variable substance, Each latent image pattern can be visualized and raised by perspective from each viewpoint using a device that is suitable for optically variable substances for false determination, making forgery and duplication more difficult, and latent image with excellent design An intaglio printed matter having a pattern may be used.

Furthermore, according to the invention according to claim 5 , the optically variable substance is a fluorescent pigment or an infrared absorbing substance, so that each black lamp or infrared monitor dedicated to authenticity determination at a sales office or the like is used. Each latent image pattern can be visualized and raised by the perspective from the viewpoint, and forgery and reproduction can be made more difficult.

  Therefore, the present invention exhibits excellent practical effects not only in securities such as stock certificates and gift certificates, but also in applications such as measures for preventing counterfeiting and duplication of product seals and tags.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view showing one example when an intaglio printed material having a latent image pattern of the present invention is visualized. 2 and 3 are front views showing examples of one image constituting the intaglio printed material having the latent image pattern of the present invention, and FIGS. 4 and 5 show the intaglio printed material having the latent image pattern of the present invention. FIG. 6 is a front view of a case where two images of FIGS. 2 and 4 are combined, and FIG. 7 is a modification of the combined intaglio print of FIG. FIG. 2 is a front view of an intaglio print having a latent image pattern according to the present invention. FIG. 8 is a front view of the intaglio printed material having the latent image pattern of FIG.

  In the present invention, for example, as shown in FIG. 1 (a), a latent image in which a plurality of images (two images in this example) having a latent image pattern (not shown) composed of line-shaped convex portions is synthesized. When an intaglio printed matter (1) having a pattern is observed (perspective) from an obliquely upper side (viewpoint A) of the intaglio printed matter (1) having the latent image pattern, as shown in FIG. The letter “T”, which is a latent image pattern, is visualized and appears to emerge, and when viewed (perspective) from the left 45 ° obliquely upward (viewpoint E), as shown in FIG. The letter “P”, which is a latent image pattern of the image of, is visualized and appears to appear. When viewed from the opposite side of the viewpoint A shown in FIG. 1B, that is, obliquely upward from the rear (viewpoint B), as shown in FIG. 1D, the upside down character of “T” is visualized and emerged. Further, when viewed (perspective) from the opposite side of the viewpoint E shown in FIG. 1C, that is, obliquely from the rear right side 45 ° (viewpoint F), as shown in FIG. Make the intaglio print (1) with multiple (two in the example) latent image patterns that make the upside-down character of the image pattern “P” visible and appear to be raised, making counterfeiting and duplication extremely difficult It is a thing.

  The intaglio printed material having a latent image pattern according to the present invention is, as shown in FIG. 2 (a) and an enlarged view of FIG. 2 (b), for example, with a predetermined pitch (P1) extending in the horizontal (horizontal) direction. A “T” -shaped latent image pattern (20) composed of line-shaped convex portions (10) having a line width (W1), and a “T” -shaped latent image pattern (20) extending in the vertical (vertical) direction. ) And a background portion (22) that forms a region other than the letter "T" consisting of the line-shaped convex portions (12) having substantially the same pitch (P2) and line width (W2). Let it be image A.

  For the image A obtained above, as shown in FIG. 4 (a) and an enlarged view of FIG. 4 (b), for example, a predetermined pitch (P3) and a line width extending in a 45 ° diagonally lower right direction The latent image pattern (24) of the letter “P” made of the line-shaped convex part (14) of (W3) and the latent image pattern (24) of the letter “P” extend in the vertical direction. An intaglio printed matter comprising a background portion (26) composed of line-shaped convex portions (16) having substantially the same pitch (P4) and line width (W4) outside the area of the latent image pattern (24). Let it be image B.

  When the image A shown in FIG. 2A obtained above is observed from, for example, obliquely upward (viewpoint A), as shown in FIG. 3, the latent image pattern (20) of the “A” image is “T”. When the image B shown in FIG. 4A obtained as described above is viewed from, for example, 45 ° obliquely upward (viewpoint E), as shown in FIG. In addition, the letter “P”, which is the latent image pattern (24) of the B image, is visualized and appears to appear. For example, as shown in FIG. 6, the image A and the image B are simply synthesized. In the intaglio printed matter (2), the line-shaped convex portions (10, 12, 14, 16) intersect with each other to form a lattice shape, so that even if this is observed obliquely from the front (viewpoint A), or Image A as shown in FIG. 3 or FIG. 5 before composition even when observed from 45 ° obliquely above (viewpoint E) on the left side And the latent image pattern (20, 24) lacks contrast with the background portion (22, 26) as in the case of the image B, and therefore the “T” and “P” that are the latent image pattern (20, 24) are almost visually recognized. Can not be.

Therefore, the feature of the invention according to claim 1 is that the intaglio printed matter (2) in which the image B is simply synthesized at an angle of 45 ° on the lower left side with the image A shown in FIG. As shown in FIG. 7, each of the latent image pattern (24) and the background portion (26) constituting the image B between the line-shaped convex portions (12) of the background portion (22) constituting the image A is shown. The line-shaped convex portions (14, 16) are deleted (corrected) at intervals, and the image A between the line-shaped convex portions (16) of the background portion (26) constituting the image B is also displayed. The intaglio printed matter (1) having a latent image pattern in which each of the line-shaped convex portions (10, 12) of the latent image pattern (20) and the background portion (22) is deleted (corrected) every other interval. It is.

  As described above, the image A and the image B are synthesized at an angle of 45 ° on the lower left side, and each line-like protrusion between the background parts (22, 26 line-like protrusions (12, 16)). When the intaglio printed matter (1) having the corrected latent image pattern is observed obliquely from the front (viewpoint A) by deleting (correcting) the parts (14, 16, 10, 12) at intervals, For example, as shown in FIG. 8A, the background portion (22) appears to be thinner than the latent image pattern (20), thereby increasing the contrast between the background portion (22) and the latent image pattern (20). Therefore, the letter “T”, which is the latent image pattern (20) of the image A, appears darker than the other background portions (22) and appears (is visualized), and is corrected. An intaglio printed matter (1) having a latent image pattern is diagonally upward 45 ° on the left side of the front ( When viewed from the viewpoint E), for example, as shown in FIG. 8B, the background portion (26) appears thinner than the latent image pattern (24), and the background portion (26) and the latent image pattern (24) are displayed. ) So that the letter “P”, which is the latent image pattern (24) of the image B, appears darker than the other background portions (26) and appears (visualized). It will be.

  These deletions (corrections) can be corrected photographically on the original (photographic film) or electronically on the display.

  The pitch (P1, P2, P3, P4) of the line-shaped convex portions (10, 12, 14, 16) shown in FIGS. 2 (a), 2 (b) and FIGS. 3 (a), 3 (b) is 0. 1 to 1.0 mm, its line width (W1, W2, W3, W4) is preferably 0.02 to 0.6 mm, and the white line width (non-image portion) is preferably in the range of 0.012 to 0.36 mm. More preferably, the pitch (P1, P2, P3, P4) is 0.25 mm, and the line widths (W1, W2, W3, W4) are 0.1 mm.

  Further, the shape of the line-shaped convex portions (10, 12, 14, 16) may be a broken line or a wavy line in addition to the straight line in the above example, but the contrast when the background portion and the latent image pattern are obliquely viewed. Is considered to be a straight line as in the above example.

  In addition, the line-shaped convex portions (10, 12, 14, 16) shown in FIG. 2 (a) and FIG. 3 (a) are printed with intaglio ink, and the hue is not particularly limited. In particular, in order to increase the contrast when viewed from the perspective, dark brown, dark blue, and the like, and dark colors (PCS value of 0.5 or more, B filter) are preferable. Moreover, the line-shaped convex part which comprises the image A and the image B can also be made into a different color for every image.

  The image to be synthesized in the above example is composed of two images, image A and image B, and image B is configured to be shifted by 45 ° with respect to image A. In the invention according to claim 2, this shift is performed. The angle is set to a range of 45 ° ± 15 ° with respect to one image, and therefore a plurality of other images can be combined within this range.

  If the displacement angle exceeds 60 ° with respect to one image or less than 30 °, adjacent images are too close to each other, and the visible image pattern of the latent image pattern is not preferable when viewed obliquely.

Further, in the invention according to claim 3, for example, as shown in FIG. 5, the shape of the latent image pattern (20) constituting the image A and the latent image pattern (24) constituting the image B is “T”. And “P”, each of which has a different pattern. In a plurality of images, the shape of a plurality of latent image patterns is further increased, making forgery / duplication more difficult, and having this latent image pattern. When the intaglio printed material is obliquely viewed from a plurality of locations (viewpoints), it is possible to further improve the design in which a plurality of latent image patterns having different shapes emerge.

  Further, in the invention according to claim 4, for example, as shown in FIG. 7, each line-shaped convex portion (10, 12, 14, 16) constituting the image A and the other image B is made of an optically variable substance. It is printed with the contained intaglio ink, and in the invention according to claim 5, the optically variable substance is a fluorescent pigment or an infrared absorbing substance.

  For example, when the optically variable substance is a fluorescent pigment, the line-shaped convex portions (10, 12) of the image A and the line-shaped convex portions (14, 16) of the image B emit different fluorescent colors, respectively. It is also possible to use a fluorescent intaglio ink that has the same color in visible light and print images A and B by color coding.

  In this way, intaglio that has a latent image pattern that makes it more difficult to counterfeit and duplicate by using intaglio ink containing a fluorescent pigment or an infrared absorbing substance, and further color-coded printing for each image, and also excellent in design It can be set as printed matter (1).

  The fluorescent pigment contained in the intaglio ink is an organic fluorescent pigment composed of a fluorescent dye and a synthetic resin solid solution. The fluorescent dye is, for example, brilliant that exhibits yellow in daylight and green to yellow-green in black light. Sulfoflavin FF, thioflavine, basic yellow, fluorescein, etc. are listed. Synthetic resins that serve as carriers for these fluorescent dyes include polymethacrylate, urea, formalin resin, melamine / formalin resin, vinyl chloride resin, vinyl chloride-vinegar. Bi-copolymers, alkyd resins and their modified ones can be mentioned, and they are appropriately selected according to the use and the like.

  Further, as the fluorescent pigment contained in the intaglio ink, there is a heat-resistant inorganic fluorescent pigment made of Zn2SiO4 / Mn, CaWO4, etc. that emits light only in the wavelength range of 200 to 300 nm. A fluorescent fluorescent ink for intaglio printing can be obtained by dispersing about 20% of a fluorescent pigment in the intaglio printing ink vehicle, and each line-shaped convex portion (10, 12, 14, 16) can be formed.

  By using the intaglio printed matter (1) having a latent image pattern using colored (dark) fluorescent intaglio ink as described above, it is possible to determine the authenticity of the intaglio printed matter at a sales office by irradiating with a dedicated black lamp. Each latent image pattern can be lifted and visually recognized by perspective from each viewpoint, making it more difficult to counterfeit / reproduce, and an intaglio printed matter (1) having a latent image pattern with excellent design. it can.

  Furthermore, examples of the infrared absorbing material contained in the intaglio ink include phosphoric acid crystal powder containing phosphorus pentoxide as a main component and iron oxide or copper oxide or both, and containing phosphorus 2+ as a main component and Fe2 + or Cu2 + ions. Glass-based powders, infrared absorbing materials of metal complexes, cyanine-based, phthalocyanine-based, naphthalocyanine-based, anthraquinone-based, colonic methine-based, azuleoniom-based, pyrylium-based infrared absorbing dyes, etc. Infrared absorbing intaglio ink can be obtained by dispersing in intaglio ink.

In addition, a dedicated infrared monitor is used for the verification of the intaglio printed matter having the latent image pattern of the present invention. For example, a laser beam having a wavelength of 750 nm, 780 nm, 810 nm, 830 nm, 905 nm, 940 nm or the like is irradiated by a semiconductor laser. It is equipped with a sensor that cuts light in the visible region, an infrared camera, and the like, and a monitor that displays images captured by these.

1 shows an embodiment of an intaglio printed material having a latent image pattern according to the present invention, wherein (a) is a front view thereof, (b) is a front view when observed from a viewpoint A, (c ) Is a front view when observed from viewpoint E, (d) is a front view when observed from viewpoint B, and (e) is a front view when observed from viewpoint F. FIG. 1 shows an embodiment of an intaglio printed material having a latent image pattern of the present invention, (a) is a front view of an image A, (b) is an enlarged view of (a), It is a front view when the image A of FIG. 1 shows an embodiment of an intaglio printed material having a latent image pattern of the present invention, (a) is a front view of an image B, (b) is an enlarged view of (a), FIG. 5 is a front view when the image B of FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of an intaglio print having a latent image pattern according to the present invention, and is a front view of an intaglio print obtained by synthesizing images A and B at different angles. It is a front view which shows one example which corrected the synthetic | combination intaglio printed matter of FIG. 4 and made it the intaglio printed matter which has a latent image pattern. 1 shows an example of an intaglio printed material having a latent image pattern according to the present invention, wherein (a) is a front view when observed from a viewpoint A, and (b) is a front view when observed from a viewpoint E. FIG. is there. The example of the intaglio printed matter which performed the conventional forgery prevention measure is shown, (a) is the front view, (b) is a front view when it observes from the viewpoint A. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Intaglio print which has a latent image pattern 2 ... The combined intaglio print before correction 10 ... The line-like convex part of the latent image pattern of Image A 12 ... The line-like convex part of the background part of Image A 14 ... Linear convex part of the latent image pattern of image B 16 ... Linear convex part of the background part of image B 20 ... Latent image pattern of image A 22 ... Background part of image A 24 ... Image B Latent image pattern 26... Background portion of image B P1... Pitch of line-shaped convex portions of latent image pattern constituting image A P2... Pitch of line-shaped convex portions of background portion constituting image A P3 ··· P4 pitch of line-shaped convex portions of latent image pattern constituting image B P4 ··· pitch of line-like convex portions of background portion constituting image B W1 ··· lines of latent image pattern constituting image A Line width of the convex part W2 ... Line width of the line-shaped convex part of the background part constituting the image A W3 ... Latent of the constituent part of the image B Line width of line-shaped convex part of image pattern W4... Line width of line-shaped convex part of background part constituting image B

Claims (5)

An intaglio print printed with intaglio ink, having a predetermined pitch and line width, and a latent image pattern composed of fine line-shaped convex portions extending in a predetermined direction, and a latent image pattern outside the area of the latent image pattern An intaglio printed matter having a background portion composed of fine line-shaped convex portions having substantially the same pitch and line width as the image pattern and extending in a direction perpendicular to the latent image pattern is regarded as one image, and substantially the same. A plurality of images having a pitch and a line width are synthesized by shifting the angles of the line-shaped convex portions of the latent image pattern and the line-shaped convex portions of the background portion constituting each of the images, and the background portion of each synthesized image An intaglio printed matter having a latent image pattern, wherein the line-like convex parts of other images between every other line-like convex part forming each other are removed. 2. The intaglio printed matter having a latent image pattern according to claim 1, wherein the angle at which the plurality of images are combined is 45 ° ± 15 °. The intaglio printed matter having a latent image pattern according to claim 1, wherein the shapes of the latent image patterns constituting the plurality of images are different from each other. The intaglio having a latent image pattern according to any one of claims 1 to 3, wherein the line-shaped convex portions constituting the plurality of images are printed with an intaglio ink containing an optical variable substance. Printed matter.   5. The intaglio printed matter having a latent image pattern according to claim 4, wherein the optically variable material is a fluorescent pigment or an infrared absorbing material.

Images