JP2013166333A - Copy prevention printed material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a copy prevention printed material, which is excellent in authenticity determinataion performance and counterfeit prevention effect by allowing a copy prevention pattern to surely emerge without being affected by the resolution of a copy machine.SOLUTION: A print image including a first image area and a second image area is formed on at least a part of a substrate with permeability. The first image area comprises colored permeable ink containing a color material and permeable ingredients and has a plurality of non-copyable elements arranged in sizes non-copyable by a copy machine, and the second image area comprises colored permeable ink and has a plurality of copyable elements arranged in sizes larger than the maximum value of sizes at which non-copyable elements are not copied by a copy machine, forming an equal area ratio between the first image area and the second image area.

Description

  In the field of valuable printed matter such as banknotes, passports, securities, identification cards, cards, and passports, which are security printed matters that require anti-counterfeiting effects, the present invention has a latent image that appears when copying with a copying machine. It is related to copy-printed printed matter that can be recognized as a result.

  Numerous techniques have been applied to various kinds of valuable printed matter such as banknotes, passports, certificates, etc., to prevent duplication and copying. Among these techniques, the most classic one is a background pattern composed of a complex set of straight lines and curves, which is called a background pattern, a color pattern, or a relief pattern. In the past, these patterns also had a certain anti-counterfeiting effect, but in modern times, with the advent of copying technology using digital devices such as scanners, printers, color copiers, etc., resistance to counterfeiting has been reduced. It was something I couldn't expect.

  Therefore, as a copy prevention technique that cannot be reproduced by a digital device such as a scanner, a printer, or a color copier, a printed matter with halftone dots or image lines different from the above-described background pattern, color pattern, and the like has been disclosed. These technologies form latent images on printed matter using lines that digital devices are not good at reproducing. When a printed matter is copied, a portion of the printed matter is not copied, but the rest is copied. , Has the effect of appearing as a latent image.

  Among these copy protection technologies, one of the earliest technologies is known as a combination of large and light halftone dots and small and dark halftone dots, and a technology for forming warning marks with a light density that cannot be visually observed. (For example, see Patent Document 1 and Patent Document 2). In addition, a copy control pattern that expresses a portion of a curved line pattern where a latent image is not applied with a single line and a portion where a latent image is applied with two or more lines, and the area ratio of each portion is equal. There is disclosed a printed matter having (see, for example, Patent Document 3 and Patent Document 4).

  It should be noted that, in a printed matter having such a copy-control pattern, when authenticating a print product that is suspected of being a copy, the copy-check pattern cannot be seen with a genuine product so that the judge can accurately determine it. It is important to be able to see clearly in the copy. However, there is a case where the copy check pattern is slightly visualized due to a change in quality or the like.

  Therefore, as a method for camouflaging a copy-damped pattern on a printed matter, for example, a halftone dot constituting the camouflage pattern so that the image line area ratio of the camouflage pattern is higher than the background image area ratio of the background other than the camouflage pattern. Alternatively, a printed material is disclosed in which the number of lines such as lines is equal to the number of halftone dots or lines such as lines constituting a copy-control pattern (see, for example, Patent Document 5).

JP 54-74125 A Japanese Patent Publication No. 01-6958 Japanese Patent No. 3368327 JP 2001-353594 A Japanese Patent No. 2695523

  Since the copy-strengthening technology is widely used, it is generally important for security prints that are highly recognized by the public and have a high risk of falsification due to copying, such as output forms for various certificates. However, as the technological innovation of digital devices has progressed further, the input / output resolution and copy algorithms of these devices have improved, and as a result, when copying a printed material with a conventional copy-control pattern on a recent copying machine, it is not normally copied to the copied material. There is a problem that halftone dots and image lines are reproduced, and latent images and warning marks do not appear. In addition, there is a problem in that it can be reproduced by inputting with a scanner and using image processing software. For this reason, there has been a need for a printed material on which a latent image and a warning mark appear reliably when copied without being affected by the resolution of the copying machine.

  In addition, it is preferable that the security printed matter requiring the anti-counterfeiting effect as described above not only has the latent image and warning mark appear surely when copied, but also can perform authenticity determination quickly. For example, it is troublesome to copy and check with a copying machine for authenticity determination at banks, exchanges, censorship offices, counters or cash vouchers. A technique capable of false identification is desired.

  The present invention is intended to solve the above-mentioned problems, and is not affected by the resolution of the copying machine, and the copy stroking pattern surely appears. Provide printed matter.

  In addition, the present invention can not only determine true / false by the appearance of a copy-checking pattern, but also enables true / false determination without using tools, devices, etc., and doubles it together with the pattern that appears when copying. By checking this, it is possible to provide a copy check printed matter with higher authenticity discrimination.

  The copy-strength printed matter of the present invention includes a printed image made of ink of a color different from that of the base material on at least a part of the base material having penetrability, and the printed image includes the first image region and the second image region. And the first image area includes at least a plurality of non-copyable elements made of colored penetrating ink containing a color material and a penetrating component and having a size that cannot be copied by a copying machine, and the second image area. The region has at least a plurality of copyable elements made of colored penetrating ink, the copyable element being larger than the maximum size that the non-copyable element cannot be copied by a copier and making the two regions the same color, The area ratios of the first image region and the second image region are formed to be equal, and when copying with a copying machine, non-copyable elements are not copied, and only copyable elements are copied.

  The copy-strength printed matter of the present invention includes a printed image made of ink of a color different from that of the base material on at least a part of the base material having penetrability, and the printed image includes the first image region and the second image area. The first image area has at least a plurality of non-copyable elements made of colored penetrating ink containing a coloring material and a penetrating component, and having a size that cannot be copied by a copying machine. The image area has at least a plurality of copyable elements comprising a colored non-penetrable ink of the same hue as the colored penetrating ink, the copyable element being greater than a maximum size at which the non-copyable element is not copied by the copier, In order to make the two areas have the same color, the area ratios of the first image area and the second image area are formed to be equal, and when observed under transmitted light, only the copyable element is visually recognized. If copied, elements that cannot be copied Copied not only copiable element is characterized in that it is copied.

  In addition, the copy-strength printed matter of the present invention is characterized in that the maximum size of the non-copyable element is 150 μm.

  Further, in the copy-strength printed matter of the present invention, the printed image further has a camouflage pattern, and the camouflage pattern has a position that does not overlap with a non-copyable element in the first image area and a copyable element in the second image area. A plurality of camouflage elements made of colored penetrating ink and having a size equal to or smaller than the maximum size of the non-copyable elements are arranged at positions where they do not overlap.

  In addition, the copy-strength printed matter of the present invention is characterized in that each element constituting the printed image is composed of at least one of an image line or a pixel, or a combination thereof.

  In the copy-strength printed matter of the present invention, the color material is a colored pigment or a colored dye, and the blending ratio in the colored penetrating ink is 10% or less.

  When copying the copy-proof printed matter of the present invention, since the non-copyable elements are not reproduced by using the light transmittance of the colored penetrating ink, only the copy-capable elements are reproduced, and the copy-damped pattern appears surely. Excellent discrimination and anti-counterfeiting effect.

  In addition, since the copy-checked printed matter of the present invention can also check the appearance of the image through the light, it is possible to double-check the security printed matter that is suspected of being duplicated. Excellent effect.

  The copy-strength printed matter of the present invention cannot be formed even by printing with a commercially available penetrating ink. In forming this, the penetrating component and the colorant are mixed at an appropriate blending ratio, and reflected. It is necessary to produce an ink with optical properties that are observed to have a visible color under light, but are invisible or difficult to see under transmitted light, and have an optical property that changes to a light color. It is impossible to easily counterfeit because of the skills and equipment required.

It is a figure which shows the copy proof printed matter in this invention. It is a figure which shows the structure of the printing image formed in a copy proof print. It is a figure which shows the structure of the 1st image area | region and 2nd image area | region formed with an equal area ratio. It is a figure which shows the non-copyable element arrange | positioned at a 1st image area. It is a figure which shows the printed matter to which the conventional copy prevention technique was given, and its effect. It is a figure which shows the copy proof printed matter and its effect in this invention. It is a figure which shows the image visually recognized when observing through a copy printed matter. It is a figure which shows the structure of the printing image comprised by an image line. It is a figure which shows the structure of the 1st image area | region and 2nd image area | region formed with an equal area ratio. It is a figure which shows the duplication check printed matter in which a camouflage image is formed. It is a figure which shows the structure of a 1st image area and a 2nd image area. It is a figure which shows the example of a structure of a non-copyable element and a copyable element. FIG. 3 is a diagram illustrating a copy-check printed matter of Example 1. FIG. 3 is a diagram illustrating a first image region and a second image region of a copy-check printed matter of Example 1. FIG. 10 is a diagram showing a copy-check printed matter of Example 3. FIG. 10 is a diagram illustrating a first image area and a second image area of a copy-check printed matter of Example 3.

  DESCRIPTION OF EMBODIMENTS 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 described below, and includes various other embodiments within the scope of the technical idea described in the claims.

  FIG. 1 (a) shows a copy-controlled printed matter (1) according to the present invention. In the copy proof printed matter (1), a printed image (3) having a color different from that of the substrate (2) is formed on at least a part of the light-transmitting substrate (2). Consists of two areas, a first image area (4) and a second image area (5). FIG. 1A shows a state in which a printed image (3) is formed on a part of the base material (2), but the copy-damped printed matter (1) of the present invention is on the base material (2). A configuration in which the print image (3) is entirely formed may be employed. For convenience of explanation, the character “x” is visible in the printed image (3) shown in FIG. 1 (a), but the first image region (4) when viewed under diffuse reflected light. The second image area (5) is the same color, and the character “x” cannot be confirmed. In the present invention, “observation under diffuse reflected light” refers to a situation where the observer's viewpoint is in an area where there is almost no specularly reflected light and the copy printed matter (1) is observed. Say. Then, when the copy-prohibited printed matter (1) of the present invention is copied by a copying machine, as shown in FIG. 1B, the first image area (4) is not reproduced and only the second image area (5) is reproduced. Reproduced and the copy damped pattern (6) appears. As described above, even if an attempt is made to duplicate the copy-controlled printed matter (1) of the present invention, the printed image (3) cannot be completely reproduced, and a copy-controlled pattern (6) indicating that the printed image has been copied appears. By doing so, it is possible to prevent forgery. Hereinafter, the detailed configuration of the copy proof printed matter (1) of the present invention will be described.

  FIG. 2 is a diagram illustrating a configuration of a print image (3) formed on the base material (2). The base material (2) used in the present invention needs to have a property that the ink penetrates into the base material (2) when the penetrating ink is printed. Further, it is necessary that the base material (2) itself has a property of transmitting light or has a property of transmitting light when penetrating ink permeates the base material (2). As an example of such a substrate (2), fine paper or coated paper can be used.

  As shown in FIG. 2, the print image (3) is composed of a first image region (4) and a second image region (5). In the example of the print image (3) shown in FIG. 2 (a), the first image area (4) is formed with the character “x” as a positive image, and the second image area (5) is Although the negative image is formed so as to surround the character “x”, the second image region (5) is formed with the character “x” as a positive image, and the first image region (4) may be formed so as to surround the character “x” as a negative image. The first image region (4) or the second image region (5) formed as a positive image is not limited to the character “x”, and may be formed from other characters. , Numbers, symbols, figures, designs, marks and patterns, or a combination thereof. In the following description, as shown in FIG. 2 (a), the first image area (4) is formed with a character “x” as a positive image, and the second image area (5) is a negative image. An example in which the character “x” is formed as an image will be described.

  FIG. 2B is an enlarged view of a portion surrounded by a thick line frame shown in FIG. As shown in FIG. 2B, the first image area (4) is composed of a plurality of non-copyable elements (7), and this non-copyable element (7) is printed with colored penetrating ink. The second image area (5) is composed of a plurality of copyable elements (8) and is printed with the same ink as the ink forming the non-copyable elements (7), or with a colored ink having at least the same hue. Has been. The details of the ink forming the non-copyable element (7) and the copyable element (8) will be described later.

  The non-copyable element (7) shown in FIG. 2 (b) is represented by a right diagonal broken line, and the copy-capable element (8) is represented by a right diagonal line. The inside of the element is filled.

  In the present invention, the non-copyable element (7) and the copyable element (8) are composed of one or a combination of a pixel and an image line. Note that the “pixel” in the present specification is a printing halftone dot which is the minimum unit constituting the print image (3) or a group of image elements formed by collecting a plurality of printing halftone dots. Various graphics such as circles, triangles, quadrilaterals, etc., stars, etc., characters, symbols, etc. are included, and any pixel shape is included in the pixel in the present invention. In addition, the “image line” in the present specification is an image element formed by continuously arranging halftone dots in a fixed direction without a gap, and is a broken line, a broken line, a straight line, a curved line, or a wavy line. Therefore, any image line shape is included in the scope of the technical idea of the present invention. In the present embodiment, first, the non-copyable element (7) and the copyable element (8) composed of pixels will be described.

  The configuration shown in FIG. 2B shows a state in which a plurality of non-copyable elements (7), which are circular pixels having a width (R1) and a height (H1), are arranged to form a character “x”. A plurality of copyable elements (8), which are circular pixels having a width (R2) and a height (H2), are arranged so as to surround the character “x”.

  In the present invention, the size of the copyable element (8) is formed larger than the non-copyable element (7), and the first image area (4) in which the non-copyable element (7) is arranged and the copyable element ( The second image region (5) in which 8) is arranged is formed with an equal area ratio so that it is visually the same color when observed under diffuse reflected light. In the present invention, “equal color” means a state in which the observer feels that the two colors are the same color when they glance at the two observation objects without paying special attention. This is a state where the color difference ΔE of the target is a value of 6.0 or less. In the present invention, the “area ratio” is the ratio of the area of elements arranged in a certain area of the substrate (2). Next, a configuration in which the first image region (4) and the second image region (5) are formed with the same area ratio will be described.

  For example, when the width (R1) and the height (H1) of the non-copyable element are half of the width (R2) and the height (H2) of the copyable element, FIG. ) Assuming that one circular copyable element (8) is arranged in a certain area (shown by a broken line) of the second image region (5), as shown in FIG. ) In the same constant area (shown by broken lines), as shown in FIG. 3B, four circular non-copyable elements (7) are arranged, so that the second image area (5) And the areas of the elements arranged in the same constant area of the first image region (4) become equal. At this time, as shown in FIG. 2, the interval at which the non-copyable element (7) is arranged is narrower than the interval at which the copyable element (8) is arranged. In this way, the first image area (4) and the first interval are adjusted by adjusting the size and the arrangement interval of the non-copyable element (7) and the size and the arrangement interval of the copy-capable element (8). The area ratio of the two image regions (5) can be made equal. In the present invention, the area ratios of the first image region (4) and the second image region (5) do not have to be completely equal, and the first image region (when viewed under diffuse reflected light) 4) and the second image region (5) are only required to be indistinguishable visually, and if the state can be satisfied, the “equal area ratio” described in this specification is technical. Included in the scope of thought. As for the technology for making the first image region (4) and the second image region (5) have the same area ratio, for example, in the technology of copy prevention image line described in Patent Document 3, it has already been publicly known. Yes.

  Here, the configuration in which the area ratios of the first image region (4) and the second image region (5) are completely equal has been described with reference to FIG. Is manufactured, the area ratio on the plate making of the non-copyable element (7) and the copyable element (8) is adjusted in consideration of dot gain and dot loss in the plate making and printing process, and the first on the printed matter is adjusted. The image area (4) and the second image area (5) may be the same color.

  Further, in the present invention, each of the first image area (4) and the second image area (5) is provided by arranging a plurality of non-copyable elements (7) and copyable elements (8) described below. When observed with diffusely reflected light, it is observed as a constant density. Next, a configuration for observing the first image region (4) as a constant density when observed with diffuse reflected light will be described.

  When the first image region (4) is observed with diffuse reflected light, there are two configurations for observing as a constant density, and the first configuration is as shown in FIG. A plurality of non-copyable elements (7) are regularly arranged at the first pitch (P1). As shown in FIG. 4A, when the non-copyable elements (7) are regularly arranged, the amount of light reflected from a certain area in the first image region (4) is constant. Observed as a constant concentration. In the present invention, “regularly arranged” when the non-copyable elements (7) are formed of pixels means that the plurality of non-copyable elements (7) are in two different directions at the first pitch (P1). It is in a state of being arranged in a matrix. FIG. 4A shows a state in which the non-copyable elements (7) are arranged at the first pitch (P1) in two directions of up, down, left, and right directions. It is not limited and may be an oblique direction.

  As shown in FIG. 4B, the second configuration for observing the first image region (4) as a constant density when observed with diffusely reflected light is the first image region (4). The non-copyable elements (7) are randomly arranged in the parentheses. At this time, the ratio of the non-copyable elements (7) arranged within a certain area in the first image area (4) is arranged so as to be the same over the entire first image area (4). The Although the size of the non-copyable element (7) will be described later, since the non-copyable element (7) is fine, if the ratio of the non-copyable element (7) arranged in a certain area is the same, As shown in FIG. 4B, even if the interval at which the non-copyable elements (7) are partially arranged in the first image area (4) is different, the configuration is the same as that shown in FIG. At a constant concentration. For this randomly arranged configuration, techniques such as FM screen and dither pattern can be used. For example, a dither processing function such as commercially available image processing software Photoshop (manufactured by Adobe) may be used.

  The configuration in which the second image region (5) is observed as a constant density when observed with diffusely reflected light is the same as the configuration described in the first image region (4). There are a configuration in which the copyable elements (8) are regularly arranged in the area (5) and a configuration in which the copyable elements (8) are randomly arranged (not shown). When the copyable elements (8) are regularly arranged, they are arranged at a second pitch (P2) larger than the first pitch (P1).

  In the present invention, the size of the non-copyable element (7) depends on the performance of the copying machine, but at least one of the pixel width (R1) and height (H1) is 150 μm or less as a size that cannot be copied. is there. This corresponds to a halftone line number of 120 lines / inch or more when converted to a halftone dot with an area ratio of 50%. In a conventional copy-prevented printed material, the size of the image line that is not reproduced when copied is about 50 μm, although it depends on the color of the pixel and the performance of the copying machine. ) May be as large as 150 μm. The reason for this will be described later.

  In the present invention, the size of the copyable element (8) depends on the performance of the copying machine, but is larger than 150 μm, which is the maximum value that the non-copyable element (7) cannot be copied by the copying machine. The copyable element (8) is copied by a copying machine.

    The colored penetrating ink used in the present invention will be described. The colored penetrating ink used in the present invention is a penetrating ink containing a penetrating component having an effect of allowing a printed image to be seen through under transmitted light (observed brighter than a non-image portion), and a colored coloring material. Is an ink formed by blending, and refers to a penetrating ink having a light color. In the present invention, “color” represents a color including the concept of hue, saturation, and brightness, and “hue” refers to a color aspect such as red, blue, and yellow. Specifically, the intensity distribution of a specific wavelength in the visible light region (400 to 700 nm) is shown. Further, the “light color” here means a color with high brightness under diffuse reflected light. Specifically, when colored penetrating ink is printed at an area ratio of 100%, L under diffuse reflected light is used. * It shall have a value exceeding 70.

  When the colored penetrating ink is printed on the substrate (2), it can form a printed image with a color that can be clearly confirmed under reflected light, while the printed image is invisible or almost visible under transmitted light. It has the characteristic of changing to a light color that is difficult. In brief, it is an ink having the effect of “the image disappears when see-through”.

  The penetrating component in the colored penetrating ink may be the same as the penetrating component of the conventional penetrating ink, and may be prepared by mixing a commercially available penetrating ink and a coloring material. As for the colored color material, a color material for printing sold as a color pigment or a color dye may be used.

  First, regarding the penetrating component, the penetrating component in the present invention refers to a component that penetrates into the inside of the paper during printing and serves to increase the transmittance of the printing region. It refers to resins, waxes, animal and vegetable oils, etc. close to the rate (1.49). These components fill the gaps between the cellulose fibers present in the paper when printed, and serve to increase the light transmittance mainly by suppressing light scattering inside the paper.

  Furthermore, the penetrating ink in the present invention refers to an ink containing the penetrating component described above. Examples of such ink include T & K TOKA's best one watermark ink, Toyo Ink's SMX watermark ink, and joint ink E2 varnish. The colored penetrating ink of the present invention can also be produced using these commercially available inks. Moreover, as a commercially available penetrating ink having a penetrating effect, a general low viscosity OP varnish such as New Champion High Gloss OP Varnish manufactured by DIC may be used in addition to the above-mentioned ink. These are not used mainly for the penetration effect, but when printed, the low viscosity resin component penetrates into the paper during the drying process. However, a certain penetration effect can be obtained. Since this low-viscosity OP varnish is cured by drying, it is preferable to use these penetrating inks when the fastness is particularly important. Moreover, these inks may be mixed to form a penetrating ink, and a colored penetrating ink that achieves both a penetrating effect and a fastness can be used.

  Next, regarding a colored color material, when a large amount of a colored color material is added to the penetrating ink, the transmittance of the printed matter is lowered, and the effect of “the image disappears when see-through” is lowered. Therefore, the colored penetrating ink used in the present invention needs to have a light color. In order to stably produce colored penetrating inks with light colors with high reproducibility, coloring materials can also be produced by using pigments that have high transparency and low coloring power, and have high coloring power. It can also be produced by using a pigment in a low blending ratio. Among pigments with low coloring power, pigments that are generally sold as colorants for printing include so-called “transparent pigments” and “fine particle pigments”, such as dipyrroside pigments and cyanine pigments. The number of colors is also abundant. Examples of pigments having high coloring power include phthalocyanine pigments, quinacridone pigments, and dioxane pigments.

  When a colored penetrating ink is produced using a printing color material as described above, the blending amount of the printing color material in the ink is desirably 10% or less by weight. This is because, in a colored penetrating ink containing 10% or more of a color material, the density of the printed image is high, and the effect of “disappearing through” is reduced. The “image disappears when see-through” effect not only depends on the performance of the colored penetrating ink, but is also greatly influenced by the area ratio of the image to be formed.

  For example, when an image is formed with an area ratio of 100% and when an image is formed with a low area ratio from highlight to halftone, even if the same colored penetrating ink is used, the effect of “disappearing through transparency” is the latter. The image of is higher.

  On the other hand, if the blending amount of the printing color material is small, the visibility of the printed image (3) decreases under diffuse reflected light. Therefore, the blending amount of the printing color material in the colored penetrating ink is 0.01% by weight. The above is preferable.

  Based on the above, it is necessary to appropriately adjust the amount of the printing color material blended in the colored penetrating ink according to the coloring power of the color material itself, the performance of the penetrating component, the area ratio of the image to be formed, and the like.

  The printed image (3) is printed using the colored penetrating ink having the above performance. As the printing method, wet offset printing is most suitable, but dry offset printing, resin letterpress printing, or the like may be used.

  The effect of this invention is demonstrated using FIG.5 and FIG.6. For comparison with the effect of the copy-strength printed matter (1) of the present invention, FIG. 5 (a) shows a partial enlargement of a printed matter (9) on which pixels of a conventional anti-copying constitution are printed using ordinary ink. The figure is shown. In the conventional copy prevention technology, the larger pixel (10a) shown in FIG. 5A is formed with a size of 150 μm or more, and the smaller pixel (10b) is formed with a size of about 150 to 50 μm. It had been. When a conventional printed material is copied with a conventional copying machine, the smaller pixel (10b) cannot be read by the copying machine due to the resolution limit of the copying machine, etc., so the copied material shown in FIG. As in (11-1), only the larger pixel (12a) could be reproduced, and the small pixel (12b) of 150 μm or less could not be reproduced. However, recent copiers have high resolution, and can reproduce even small pixels of about 150 to 50 μm. In addition, recent copiers have an automatic image correction function and a function of manually adjusting the color tone of a copy to make it darker or lighter. If these are used, as shown in FIG. In addition, the larger pixel (12a) and the smaller pixel (12b) of the copy (11-1) can be made to be very close to the original print (9).

  Next, the effect of the present invention will be described. Here, an example in which the non-copyable element (7) and the copyable element (8) are formed of colored penetrating ink will be described. When copying a copy-strength printed matter obtained by printing with the colored penetrating ink used in the present invention, when the copying machine irradiates visible light when reading the printed matter, the non-copyable element (7) formed with the colored penetrating ink and Since the copyable element (8) easily transmits light, the color of the pixel is close to that of the paper. This tendency is remarkable in the vicinity of the pixel outline. The non-copyable element (7) in the copy-damped printed matter (1) shown in FIG. 6 (a) is formed with a pixel width (R1) and height (H1) of 150 μm or less. Due to the transparency, the color of the entire pixel cannot be detected from the outline of the pixel to the center of the pixel, and the copying machine determines that the pixel does not exist. Therefore, as shown in FIG. The non-copyable element (7) is not copied to 11-2).

  On the other hand, the copyable element (8) has a color similar to that of the paper on the contour, and therefore the copy (11-2) is copied as a pixel (14) smaller than the original copyable element (8). If the width (R2) and height (H2) of the pixels are larger than 150 μm, the pixels will not disappear completely even if the colored penetrating ink is used (FIG. 6B). If the copying machine has a color tone correction function, the copy (11-2) is density-corrected so as to have the same density as the original pixels, and therefore copied in a manner that is relatively close to the original print. .

  In this way, when the copy-strength printed matter (1) of the present invention is copied, the non-copyable element (7) is not copied, only the copy-capable element (8) is copied and the copy-damped pattern shown in FIG. By appearing 6), it is possible to prevent duplication and to determine whether the counterfeit product is a copy of the copy-check printed matter (1). The printed matter (9) printed with the conventional anti-copying technology configuration is reproduced by a copying machine with high resolution in recent years, whereas the copy-controlled print (1) of the present invention is light-transmitting colored penetrating ink. By utilizing the property, the non-copyable element (7) is not reproduced, only the copyable element (8) is reproduced, and the copy damped pattern (6) appears surely. Excellent.

  Further, when the copy-prohibited printed matter (1) in which the non-copyable element (7) and the non-copyable element (8) are formed of colored penetrating ink is observed through light, the non-copyable element ( 7) and the copyable element (8) are invisible or change to a light color that is hardly visible, and the printed image (3) disappears. As described above, the copy-prohibited printed matter (1) according to the present invention can easily determine authenticity by simply observing through the light without being copied by a copying machine, and the printed image (3) when copied. Can be double-checked, including reproducibility.

  In addition to the above-described form, in order to obtain a printed matter with a higher copy-damping effect, only the non-copyable element (7) is printed using the colored penetrating ink, and the copyable element (8) is the same as the colored penetrating ink. Printing is performed using a colored ink that has a hue and does not have the effect of “disappearing when seen through” (hereinafter referred to as a colored non-penetrating ink). The colored non-penetrating ink may be a commercially available ink for general offset printing. In this case, the effect of the colored penetrating ink that is difficult to copy is exerted only on the non-copyable element (7), so the difference in copy reproducibility between the first image area (4) and the second image area (5). Becomes larger and the copy damped pattern (6) tends to appear on the copy.

  In addition, when the copy-prohibited printed matter (1) in which the copyable element (8) is printed using the colored non-penetrable ink is observed through the light, the non-copyable element (7) formed with the color permeable ink is invisible. It changes to a pale color that is hardly visible, and only the copyable element (8) formed with colored non-penetrable ink is observed. The pattern can be visually recognized, the authenticity can be determined without copying with a copying machine, and the double check can be performed including the reproducibility of the printed image (3) when copied.

  When printing the copyable element (8) with colored non-penetrable ink, there is a difference in the amount of ink transferred to the paper based on physical properties such as color difference and viscosity between the colored penetrable ink and the colored non-penetrable ink. Arise. For this reason, it is necessary to adjust the area ratio of each area so that the second image area (5) and the first image area (4) appear to be the same color on the printed matter.

  In the above description, the configuration in which the non-copyable element (7) and the copyable element (8) are formed by pixels has been described. Subsequently, the configuration formed by image lines will be described.

  FIG. 8 (a) is a diagram showing a copy-stamped printed matter (1) when the non-copyable element (7) and the copyable element (8) are formed by lines, and FIG. 8 (b) is a diagram showing FIG. It is the figure which expanded the part enclosed with the thick line frame shown to (a). When the non-copyable element (7) and the copyable element (8) are formed by image lines, the first image area (4) has an image line width (W1) as shown in FIG. A plurality of non-copyable elements (7) formed by lines are arranged. In the second image area (5), as shown in FIG. 8B, a plurality of copyable elements (8) formed with an image line having an image line width (W2) are arranged.

  When the non-copyable element (7) and the copyable element (8) are formed by lines, the line width (W1) of the non-copyable element (7) is the line width (W2) of the copyable element (8). More specifically, the line width (W1) of the non-copyable element (7) is not reproduced when copied by a copying machine, and is formed to be 150 μm or less. The image line width (W2) is larger than 150 μm so as to be reproduced by copying. Similarly to the case where the non-copyable element (7) and the copyable element (8) are formed of pixels, the first image area (4) where the non-copyable element (7) is arranged and the copyable element (8) The second image region (5) in which the) is disposed is formed with an equal area ratio so that it is visually the same color when observed under diffuse reflected light. Next, a configuration in which the first image region (4) and the second image region (5) are formed with the same area ratio will be described.

  For example, when the image line width (W1) of the non-copyable element is half the image line width (W2) of the copyable element, as shown in FIG. If one straight copyable element (8) is placed in a certain fixed area (shown by a broken line) of the image area (5) of the first image area (5), the same fixed area ( As shown in FIG. 9B, two straight non-copyable elements (7) are arranged in the second image area (5) and the first image area (4). ), The areas of elements arranged in the same constant area are equal. At this time, as shown in FIG. 8B, the interval at which the non-copyable elements (7) are arranged is narrower than the interval at which the copyable elements (8) are arranged. As described above, even when the non-copyable element (7) and the copyable element (8) are formed by lines, the line width (W1) of the non-copyable element (7) and the interval between the lines, The area ratio of the first image region (4) and the second image region (5) can be made equal by adjusting the width (W2) of the image line of the possible element (8) and the interval between the lines. .

  Further, even when the non-copyable element (7) and the copyable element (8) are formed by image lines, each of the first image area (4) and the second image area (5) is diffusely reflected. When observed with light, it is observed as a constant concentration. The configuration for this is the same as that described in the form of the copy-forbidden printed matter (1) formed of pixels, and the non-copyable elements (7) may be regularly arranged at a constant pitch (P1). However, they may be arranged at random. At this time, the copyable element (8) also has a constant pitch (if the first image region (4) and the second image region (5) described above satisfy the conditions for forming the same area ratio. It may be arranged regularly in P2) or randomly.

  In order to enhance the effect that the first image region (4) and the second image region (5) are not distinguished and visually recognized by observation under diffuse reflected light in the copy-damped printed matter (1) of the form described above, A camouflage pattern (20) described below may be provided for camouflaging. Next, the configuration of the print image (3) provided with the camouflage pattern (20) will be described using an example in which the non-copyable element (7) and the copyable element (8) are formed of pixels.

  FIG. 10 is a diagram showing a configuration of a print image (3) provided with a camouflage pattern (20) for camouflaging the first image region (4) and the second image region (5). FIG. 10A shows an example in which the camouflage pattern (20) is formed with a “star” pattern, but the camouflage pattern (20) is not limited to a “star” pattern. Instead, it may be formed of other figures, or may be formed of any one or a combination of letters, numbers, symbols, designs, marks and patterns.

  FIG. 10B is an enlarged view of the first image region (4) and the second image region (5) surrounded by the thick line frame in FIG. 10 (a). As shown in FIG. 10B, in the printed image (3) provided with the camouflage pattern (20), the first image area (4) is formed from the colored penetrating ink at a position not overlapping the non-copyable element (7). A plurality of camouflage elements (21) are formed.

  In the present invention, the camouflage element (21) is composed of one or a combination of a pixel and an image line, and the configuration of the pixel and the image line is as described above. The size of the camouflage element (21) depends on the performance of the copying machine, but the pixel width (R3) and height (H3) are 150 microns or less as a size that cannot be copied. If the sum of the sum of the widths and the sum of the heights of the non-copyable element (7) and the camouflage element (21) is 150 microns or less, the non-copyable element (7) and the camouflage element (21) You may form in the position which touches. This is because even if the non-copyable element (7) and the camouflage element (21) are in contact with each other, pixels of 150 microns or less formed with colored penetrating ink are not reproduced when copied by a copying machine.

  On the other hand, the second image area (5) is also made of colored penetrating ink at a position that does not overlap the copyable element (8), and a plurality of camouflage elements (21) are formed. The size of the camouflage element (21) formed in the second image region (5) is the same as that of the first image region (4), and the pixel width (R3) and height (H3) are 150 microns or less. It is. The copyable element (8) and the camouflage element (21) may be in contact with each other as long as the visibility of the latent image is not affected.

  In this way, the camouflage element (21) is formed at a position that does not overlap the non-copyable element (7) and the copyable element (8), so that a “star shape” that is a camouflage pattern (20) is formed on the printed image (3). ”And the“ star-shaped ”camouflage pattern (20) is visually recognized due to the difference in area ratio. Since the camouflage pattern (20) visually recognized by the difference in area ratio is conspicuous in the areas of the non-copyable element (7) and the copyable element (8) formed in different sizes, the first image Region (4) and second image region (5) can be camouflaged. In addition, when copying with a copying machine, the camouflage element (21) is not copied in the same manner as the non-copyable element (7), and the copy stroking pattern (6) appears, and the authenticity can be determined.

  The configuration of the camouflage pattern (20) has been described with reference to an example in which the camouflage elements (21) are arranged in the first image region (4) and the second image region (5) as shown in FIG. The element (21) may be formed only in the first image region (4) or may be formed only in the second image region (5). Even when the camouflage pattern (20) is formed in the first image region (4) or the second image region (5), the camouflage visually recognized by the difference in area ratio when observed with diffuse reflected light. Since the pattern (20) is conspicuous, the first image region (4) and the second image region (5) can be camouflaged.

  The color penetrating ink forming the camouflage element (21) in the copy-strained printed matter (1) on which the camouflage pattern (20) is formed has a different color from the non-copyable element (7) and the copyable element (8). Also good. In this case, a colored penetrating ink prepared by adding a pigment of a desired color to the pigment of the colored material described above may be used.

  The print image (3) described above has a configuration in which the second image region (5) is formed so as to surround the first image region (4), and the copy control pattern (6) showing a warning character is formed. Although the configuration that appears has been described, in the present invention, the first image region (4) and the second image region (5) constituting the print image (3) are provided adjacent to each other as shown in FIG. A configuration that can be used is also acceptable. At this time, the pattern of the first image region (4) and the second image region (5) is not limited to the example shown in FIG. 11, and may be formed in an arbitrary pattern. In this case, the copy damped pattern (6) does not appear, but only the copyable element (8) is reproduced in the copy, and the printed image (3) of the genuine copy damped print (1) is reproduced. Since it is always reproduced differently, the authenticity can be determined.

  Further, the non-copyable element (7) and the copyable element (8) described above are limited to the configurations shown in the drawings as long as they satisfy the conditions of the image line and the pixel size described in this specification. It can also be used as a copy-preventing image line formed on a conventional copy-strength printed matter, and is within the scope of the technical idea of the present invention. For example, as shown in FIG. 12A, the configuration of a non-copyable element (7) formed by branching from a copyable element (8) formed by one image line into three pixels, or FIG. As shown in (b), there is a configuration of a non-copyable element (7) formed by branching from a copyable element (8) formed by one line to two lines.

  Hereinafter, examples of the copy-control printed matter (1) produced specifically according to the mode for carrying out the invention will be described in detail, but the present invention is not limited to these examples.

Example 1
Example 1 is an example in which a non-copyable element and a copyable element constituting a copy-damped printed matter are printed with colored penetrating ink.

  FIG. 13 shows a copy-check printed matter (1-1) in the first embodiment. The copy proof printed matter (1-1) is formed by forming a printed image (3-1) having a light blue color on a substrate (2-1). A common white fine paper (basis weight 81.4 g / square meter, manufactured by Nippon Paper Industries Co., Ltd.) was used for the substrate (2-1).

  FIG. 14A is an enlarged view of a part of the first image region (4-1). The first image area (4-1) includes a non-copyable element (7-1) having a pixel width (R1) and a pixel height (H1) of 0.136 mm, and a pitch (P1) 0. It was regularly arranged vertically and horizontally at 170 mm. FIG. 14B is an enlarged view of a part of the second image region (5-1). In the second image area (5-1), a copyable element (8-1) having an image line width (W2) of 300 μm is regularly arranged in the S1 direction at a pitch (P2) of 600 μm (corresponding to an area ratio of 50%). Several were arranged.

  In addition, regarding the details of the area ratio, the area ratio on the plate making of the non-copyable element (7-1) and the copyable element (8-1) is taken into account in consideration of the gain and loss of the image line in the plate making and printing processes. When adjusted and observed under diffuse reflected light, the area ratio of the first image region (4-1) was set to 55% in order to make the copy stroking pattern invisible or close to the naked eye.

  Note that the non-copyable element (7-1) shown in FIG. 14 (a) is represented by a cross line, and the copy-capable element (8-1) shown in FIG. 14 (b) is represented by a vertical line. This is a drawing representation, and the actual elements are filled in.

  For colored penetrating ink, 97 wt.% Penetrating ink (Unimark, Teikoku Ink) and 3 wt.% Blue transparent coloring pigment (Daipyroxide TM Blue, manufactured by Dainichi Chemical Industries) Produced.

  Using the above paper and colored penetrating ink, the printed image (3-1) shown in FIG. 13 was printed by the offset printing method to obtain a copy-damped printed matter (1-1).

  The copy printed matter (1-1) produced by the above procedure was copied with the copying machine A (ImagePress C1 +, manufactured by Canon), and the anti-copying effect was confirmed. In the copy, the second image area (5-1) was Since the first image area (4-1) was not copied, the copy damped pattern was visualized, and the copy damped effect could be confirmed. Moreover, as a comparison object of Example 1, the print image (3-1) shown in FIG. 13 is offset printing method using the non-penetrating offset ink of the same color as the colored penetrating ink used in Example 1. A printed material was prepared and copied by a copying machine A to obtain a copied material A. When a copy of the copy proof printed matter (1-1) was compared with the copy A, the copy proof printed matter (1-1) had a clearer copy tempered pattern and the conventional non-penetrating offset ink. It was confirmed that the copy-damping effect was higher than the printed matter obtained by printing with

(Example 2)
Example 2 is an example in which, among two elements constituting a copy-damped printed matter, a non-copyable element is printed with colored penetrating ink and a copyable element is printed with colored non-penetrating ink. In the following, the copy-checked printed matter of the second embodiment will be described.

  In the copy-strength printed matter (1-2) of Example 2, the same ink as in Example 1 was used as the colored penetrating ink forming the non-copyable element. In addition, as the colored non-penetrating ink forming the copyable element, a normal blue ink for UV offset printing (manufactured by T & K TOKA) having the same color as the colored penetrating ink was used.

  The copy-check printed matter (1-2) produced by the above procedure was copied with the copying machine A, and the anti-copying effect was confirmed. As a result, the second image area (5-2) was copied and the first copy was copied. Since the image area (4-2) was not copied, the copy stroking pattern was visualized, and the copy stroking effect was confirmed. Further, the copy-sized printed matter (1-2) of the second embodiment and the copied-sized printed matter (1-1) of the first embodiment are respectively copied by a copying machine B (DocuColor 4055P, manufactured by Fuji Xerox Co., Ltd.) capable of adjusting the hue and the like in detail. A copy was obtained by copying. When these copies were compared, the copy of the copy-damped printed material (1-2) of Example 2 had a clearer copy-damped pattern than the print obtained by printing only with colored penetrating ink. In addition, it was confirmed that the effect of duplication was high. In addition, when the produced copy-printed printed matter (1-2) was made transparent, the non-copyable elements disappeared and the copyable elements were seen, so that an image corresponding to the copy-damped pattern could be visually recognized.

(Example 3)
Example 3 is for enhancing the effect that the first image region (4) and the second image region (5) are not visually recognized by the observation under diffuse reflected light with respect to the copy-damped printed matter of Example 2. This is an example in which a camouflage pattern (20) is applied. In the following, the copy-check printed matter of Example 3 will be described, but a part of the description of the same configuration as Example 2 will be omitted.

  FIG. 15 shows a copy-check printed matter (1-3) in the third embodiment. The copy-strength printed matter (1-3) has a light blue color on the substrate (2-3), and includes a first image region (4-3) and a second image region (5-3). The configured print image (3-3) is formed. The configuration up to this point is the same as that of the copy-damped printed matter of the second embodiment. However, the copy-damped printed matter (1-3) of the third embodiment further includes a non-copyable element (7) -3) and the second image area (5-3) are not overlapped with the copyable element (8-3), the camouflage element (21) is formed, and the camouflage pattern (20) of "star" A pattern is formed.

  FIG. 16A is an enlarged view of a part of the first image region (4-3) where the camouflage pattern (20) is formed. A circular camouflage element (21) having a pixel width (R3) and a pixel height (H3) of 0.120 mm at a position where it does not overlap with the non-copyable element (7-3) has a pitch (P1) of 0.170 mm. In order to form a part of the camouflage pattern (20), it was regularly arranged vertically and horizontally. FIG. 16B is an enlarged view of a part of the second image region (5-3) where the camouflage pattern (20) is formed. The camouflage element (21) having an image line width (W3) of 0.120 mm is regularly arranged in the S1 direction at a pitch (P3) of 0.600 mm at a position that does not overlap with the copyable element (8-3), The remaining camouflage pattern (20) was formed. The same ink as the colored penetrating ink used in Example 2 was used as the ink for forming the camouflage element (21).

  Note that the circular camouflage element (21) shown in FIG. 16 (a) is represented by a cross line in the vertical and horizontal directions, and the straight camouflage element (21) shown in FIG. 16 (b) is represented by a horizontal line. This is a drawing representation, and the actual elements are filled in.

  The copy-tensioned printed matter (1-3) produced by the above procedure was compared with the copy-tensioned printed matter (1-1) of Example 1 and the copy-tensioned printed matter (1-2) of Example 2, respectively. In (1-3), the first image area (4-3) and the second image area (5-3) are visually recognized as compared to the copy-sized printed matter (1-1) and the copied-sized printed matter (1-2). It was confirmed that it was difficult to do. Further, when the copy-damped printed matter (1-3) was copied by the copying machine A, the copy-damped pattern was clear, and it was confirmed that the camouflage pattern of the copy-damped print of the present invention did not hinder the copy-damped effect.

1, 1-1, 1-2, 1-3 Duplicated tempered printed matter 2, 2-1, 2-2, 2-3 Base material 3, 3-1, 3-2, 3-3 Print image 4, 4- 1, 4-2, 4-3 First image area 5, 5-1, 5-2, 5-3 Second image area 6 Copy stroking pattern 7, 7-1, 7-2, 7-3 Copy Unusable elements 8, 8-1, 8-2, 8-3 Copyable element 9 Print 10a with conventional copy prevention technology Large pixel 10b in print with conventional copy prevention technology Small pixels 11-1, 11-2, 11-3 in the applied prints Copy pixels 12 a, 12 b, 14 Pixels in copy matter 14 Pixels 20 Camouflage pattern 21 Camouflage elements H1, H2, H3 Height P1, P2, P3 Pitch R1, R2, R3 Width W1, W2 Line width

Claims (6)

At least a part of the substrate having penetrability is provided with a printed image made of an ink having a color different from that of the substrate, and the printed image has a first image region and a second image region, One image area is composed of colored penetrating ink containing a color material and a penetrating component, and has at least a plurality of non-copyable elements having a size that cannot be copied by a copying machine, and the second image area includes the second image area, Having at least a plurality of copyable elements made of colored penetrating ink, wherein the copyable elements are larger than the maximum size at which the non-copyable elements are not copied by a copier, and the two areas are of the same color; When the area ratios of the first image area and the second image area are formed to be equal and are copied by a copying machine, the non-copyable element is not copied, and only the copyable element is copied. Characteristic copy marking Thing. At least a part of the substrate having penetrability is provided with a printed image made of an ink having a color different from that of the substrate, and the printed image has a first image region and a second image region, One image area is composed of colored penetrating ink containing a color material and a penetrating component, and has at least a plurality of non-copyable elements having a size that cannot be copied by a copying machine, and the second image area includes the second image area, At least a plurality of copyable elements comprising a colored non-penetrable ink of the same hue as the colored penetrating ink, wherein the copyable element is greater than a maximum size at which the non-copyable element is not copied by a copier, In order to make the areas the same color, the area ratios of the first image area and the second image area are formed to be equal, and when viewed under transmitted light, only the copyable element is visually recognized. If copied, the duplicate Non elements are not copied, copy discouraging prints only the copiable element is characterized in that it is copied. 3. The copy-damped printed matter according to claim 1, wherein the maximum size of the non-copyable element is 150 [mu] m. The printed image further has a camouflage pattern, and the camouflage pattern is in a position that does not overlap the non-copyable element in the first image area and a position that does not overlap the copyable element in the second image area. 4. A plurality of camouflage elements made of the colored penetrating ink and having a size equal to or smaller than the maximum size of the non-copyable elements are arranged. Duplicated prints described in 1. 5. The copy-control printed matter according to claim 1, wherein each element constituting the print image is composed of at least one of an image line or a pixel, or a combination thereof. 6. The copy-strengthened printed matter according to claim 1, wherein the coloring material is a coloring pigment or a coloring dye, and a blending ratio in the colored penetrating ink is 10% or less.

Images