JP2014073636A - Copy check printed matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a copy check printed matter in which a copy prevention streak is formed, and, by changing a pattern visible upon truth discrimination under two different conditions, having excellent truth discrimination properties, and, as one of the conditions where truth discrimination is performed, capable of performing the operation without using tools.SOLUTION: A printed image is formed at least on a part of a base material, by at least three elements among, an infiltration non-readable element with a size not copied by a copying machine and a permeation readable element with a size copied by a copying machine using a colored permeation ink including a color material and a permeation component, a non-infiltration non-readable element with a size not copied by a copying machine and a non-permeation readable element with a size copied by a copying machine using an organic ink having a color phase same as the colored permeation ink, having a first pattern region, a second pattern region and a background region surrounding at least a part of the first pattern region and at least a part of the second pattern region, and in which, also, the first pattern region and the second pattern region are overlappingly arranged in the same region.

Description

  In the field of valuable printed matter such as banknotes, passports, securities, identification cards, cards, and passports that require anti-counterfeiting, the present invention is a copy of a genuine copy when it is watermarked with light, Thus, it relates to a copy-printed printed matter in which different visible images can be visually recognized.

  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. The copied portion appears as a latent image.

  In such a copy prevention technology, a copy stroking pattern is formed using the density of the image lines, for example, the size of the halftone dots, the image line thickness, and the like, and if the image is copied, the dense image lines are not reproduced. There is a printed matter having a copy prevention pattern in which a pattern such as “copy” appears (see, for example, Patent Document 1). The printed matter in which warning characters appear when copied is often adopted with various certificates issued by the national and local governments, so the recognition rate is considered high.

  However, the printed matter of Patent Document 1 has a true / false discrimination effect when copied by a copying machine or the like, but there is a problem that it cannot be determined by the naked eye unless it is copied by a copying machine. In addition to the copy suppression function of the printed material, there is a printed material having another authenticity determination function (see, for example, Patent Document 2). In the printed matter of Patent Document 2, a copy distorted pattern is printed with colored fluorescent ink, and the half-tone dot per unit area is different between the latent image portion and the latent image peripheral portion. A latent image can be visually recognized because the amount of fluorescence emission differs. The copy damped pattern may or may not appear remarkably depending on the performance of the copying machine. However, the printed matter of Patent Document 2 is provided with these two functions. Can be confirmed in more detail, it is easy to detect authenticity sensuously, and it can be said that the accuracy of the determination result is high. Moreover, it is excellent in the forgery prevention effect by using colored fluorescent ink with respect to the technique of patent document 1. FIG.

Japanese Patent No. 3268418 Patent No. 4085175

  However, although the printed matter of Patent Document 2 can perform authenticity determination by two different methods, since the symbols that appear when determining authenticity by the two methods are the same, there are cases where the determination is confusing. is assumed. For example, when a printed matter of Patent Document 2 is copied, warning characters such as “counterfeit” and “duplicate” appear, and the same warning characters appear even when the genuine product is irradiated with ultraviolet rays. Therefore, although it is a genuine product, it gives the impression that it is a counterfeit product or a duplicate product. To deal with such problems, characters and symbols reminiscent of authentic things such as “genuine” and “○” appear in authenticity, and duplicates such as “fake” and “x” appear in duplicates. It is desirable that characters and symbols to appear. That is, in a technique including a plurality of authenticity determination methods, it is more desirable to improve the authenticity determination property that images such as characters and symbols appearing according to the determination methods can be changed.

  Further, one of the methods for determining the authenticity of a printed material disclosed in Patent Document 2 has a problem that a printed material that is suspected of being copied cannot be determined in more detail without a tool. For this reason, there is a demand for a printed material that can be used for authenticity determination by a plurality of methods without using tools.

  The object of the present invention is to solve the above-mentioned problems, and the pattern that is visually recognized when authenticating under two different conditions is changed with respect to a printed matter on which a conventional anti-copying image line is formed. By doing so, one of the conditions for discriminating between authenticity and authenticity is to provide a copy check printed matter that can be performed without using a tool.

  The copy-strength printed matter of the present invention is obtained by using a color penetrating ink containing a coloring material and a penetrating component on at least a part of a base material, a transmission non-reading element having a size that cannot be copied by a copying machine, and a color penetrating ink. Copied by a copier with a transparent readable element having a size that can be copied with a non-transparent non-readable element having a size that cannot be copied with a copier, and a colored ink having the same hue as the colored penetrating ink. At least three of the impervious readable elements having a size, the first graphic area, the second graphic area, and at least a part of the first graphic area and at least a part of the second graphic area A printed image having a surrounding background area and having the first graphic area and the second graphic area overlapped in the same area is formed, and the transparent readable element and the opaque non-readable element are Element set and impervious With the reading element and the transparent non-reading element as the second element set, the first graphic area has a plurality of one element of one element set of the first element set or the second element set. The first significant information, the second graphic area has a plurality of the other elements of one element set to represent the second significant information, and the background area is the other element. Consists of multiple elements of one of the sets, and the first graphic area, the second graphic area, and the background area have the same color, so that the area ratio of each area is formed equally and observed under transmitted light In this case, the element formed with the colored penetrating ink is not visually recognized, and one of the first significant information and the second significant information can be mainly visually recognized and copied by a copying machine. Does not copy elements that are not sized to be copied by a copier. Is formed in a size element copying other significant information photographed, characterized in that the can proactively visible.

  Further, in the copy-strength printed matter of the present invention, the print image has a common area in a part of the first graphic area and the second graphic area, and the common area is the other of the other element set forming the background area. It is characterized by having a plurality of elements.

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

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

  The copy-proof printed matter of the present invention can confirm different visible images for the copy when copied and the genuine when watermarked with visible light. For example, the genuine product includes “genuine” and “◯”. Since characters and symbols reminiscent of genuine objects such as “Lake” and “X” can appear in duplicates, the authenticity discrimination is excellent.

  Also, one of the authenticity determination methods for copy-strengthened printed matter according to the present invention is that a visible image can be confirmed by seeing through visible light, and therefore authenticity determination can be performed without the need for tools.

It is a figure which shows the copy proof printed matter in this invention. It is a figure which shows the image visually recognized when the copy proof print in this invention is watermarked with light. It is a figure which shows the image visually recognized when copying the copy proof print in this invention. It is a figure which shows the structure of the print image of 1st Embodiment. FIG. 3 is a partially enlarged view of a print image according to the first embodiment. It is a figure which shows the structure of the image area | region where an area ratio is equal. It is a figure which shows the structure of the image area | region observed with a fixed density | concentration. It is a figure which shows the print image in which each element is comprised with an image line. It is a figure which shows the structure of the image area | region observed with a fixed density | concentration. It is a figure which shows the image visually recognized when copying and copying a copy printed matter. It is a figure which shows the structure of the printed image which has arrange | positioned each element by the 2nd combination. It is a figure which shows the image visually recognized when copying and copying the copy proof printed matter formed by arranging each element in the second combination. It is a figure which shows the image visually recognized when copying and copying the copy proof printed matter which arranges each element by the 3rd combination. It is a figure which shows the image visually recognized when copying and copying the copy proof printed matter which arranges each element by the 4th combination. It is a figure which shows the structure of the print image of 2nd Embodiment. It is a figure which shows the image visually recognized when copying and copying the copy proof printed matter of 2nd Embodiment. It is a partial enlarged view of a print image in the second embodiment. It is a figure which shows the image visually recognized when copying and copying the copy proof printed matter of 2nd Embodiment. FIG. 3 is a diagram illustrating a copy-check printed matter of Example 1. FIG. 3 is a diagram illustrating image areas of a print image according to the first exemplary embodiment. FIG. 4 is a diagram illustrating an image that is visually recognized when the copy-checked printed matter of Example 1 is watermarked with light and when it is copied. FIG. 6 is a diagram showing a copy-check printed matter of Example 2. FIG. 10 is a diagram illustrating image areas of a print image according to a second embodiment. It is a figure which shows the detailed structure of a 1st graphic area. It is a figure which shows the detailed structure of a 2nd graphics area | region. It is a figure which shows the detailed structure of a background area | region. It is a figure which shows the copy proof printed matter of Example 2 produced. FIG. 6 is a diagram illustrating an image that is visually recognized when the copy-checked printed matter of Example 2 is watermarked with light and when copied.

  DETAILED 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 may be within the scope of the technical idea described in the claims. For example, various other forms are included.

  FIG. 1 shows a copy-controlled printed matter (1) according to the present invention. First, the outline of the copy-check printed matter (1) of the present invention will be described. In the copy-strength 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 substrate (2) having penetrability. Is composed of at least three areas: a first graphic area (4), a second graphic area (5), and a background area (6). Although FIG. 1 shows a state in which a printed image (3) is formed on a part of the substrate (2), the copy-damped printed matter (1) of the present invention is printed on the entire surface of the substrate (2). A configuration in which the image (3) is formed may be used.

  For convenience of explanation, the first graphic area (4) and the second graphic area (5) can be visually recognized in the printed image (3) shown in FIG. The three areas of the first graphic area (4), the second graphic area (5), and the background area (6) are of the same color, and the respective areas cannot be identified. 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 printed matter (1) of the present invention is made transparent, as shown in FIG. 2, for example, the second graphic area (5) and the background area (6) of the printed image (3) are as shown in FIG. The light passes through the light and becomes invisible, and the first graphic area (4) blocks the light, so that the first significant information appearing in the first graphic area (4) can be visually recognized as an image. In addition, the effect that an image appears on a printed material by generating a light transmissive region and a light blocking region when the printed material is transmitted to light is hereinafter referred to as a “latent image expression effect”.

  Further, when the copy-prohibited printed matter (1) of the present invention is copied by a copying machine, as shown in FIG. 3, for example, the second graphic area (5) of the printed image (3) is copied and becomes visible. The first graphic area (4) and the background area (6) become invisible without being copied, and the second significant information appearing in the second graphic area (5) can be visually recognized as an image. Note that the effect that an image appears on a copied material when a printed material is copied and an area that cannot be copied is generated is hereinafter referred to as a “copying suppression effect”. In addition, the fact that a certain figure can be visually recognized when the printed material is watermarked with light or copied is hereinafter referred to as “mainly visible”.

  As described above, the copy-strength printed matter (1) of the present invention has an effect that an image that can be visually recognized when watermarked with light is different from an image that can be visually recognized by copying with a copying machine. Hereinafter, the detailed configuration of the copy proof printed matter (1) of the present invention will be described.

(First embodiment)
FIG. 4 is a diagram showing a configuration of a print image (3) formed on the base material (2). When the base material (2) used in the present invention is printed with “colored ink containing a penetrating component” (hereinafter referred to as “colored penetrating ink”), the ink is placed inside the base material (2). Paper or paper having the property of penetrating (hereinafter referred to as “permeability”) and the property of allowing the base material (2) to transmit light (hereinafter referred to as “translucency”) when the ink permeates. A base material in which fibers such as non-woven fabric are entangled or a porous base material, and the base material has many fine voids, and refers to a thin material. Specific examples thereof include high-quality paper having a basis weight of about 80 grams / square meter used as copy paper, and paper such as coated paper with a relatively small amount of coating agent applied.

  In the first embodiment, the print image (3) is composed of a first graphic area (4), a second graphic area (5), and a background area (6) as shown in FIG. In the example of the print image (3) shown in FIG. 4, the first graphic region (4) shows the character “◯” as the first significant information, and the second graphic region (5) is the second significant. In the present invention, the significant information that the first graphic area (4) and the second graphic area (5) appear is “◯” and “×” as information. It is not limited to the character “x”, and may be formed of other characters, or may be formed of any of various figures, designs, marks, patterns, numbers, symbols, or combinations thereof.

  In the present invention, the printed image (3) is configured such that the background area (6) surrounds at least a part of the first graphic area (4) and at least a part of the second graphic area (5). The arrangement of the background region (6) shown in FIG. 4 is a configuration that surrounds the entire first graphic region (4) and the second graphic region (5). Thus, the background region (6) is the first region. By enclosing one graphic area (4) and the second graphic area (5), when observing under diffuse reflected light, each area cannot be identified and can be visually recognized when watermarked with light. It is possible to form an image and an image that can be visually recognized when copied. However, when the effect of the background area (6) described above can be obtained by the significant information and the arrangement of the first graphic area (4) and the second graphic area (5), the first graphic area ( 4) and the second graphic area (5) do not need to be surrounded entirely, and are arranged so as to surround at least a part of the first graphic area (4) and at least a part of the second graphic area (5). Also good.

  In the first embodiment of the present invention, the first graphic region (4), the second graphic region (5), and the background region (6) constituting the printed image (4) are made of colored penetrating ink. Of the four elements of the readable element, the transparent unreadable element, and the colored opaque ink that has the same hue as the colored penetrating ink, the three elements are arranged in different areas. Become. The details of the ink that forms the transparent readable element, the transparent unreadable element, the opaque readable element, and the opaque opaque element will be described later.

  FIG. 5 is an enlarged view of a portion surrounded by a thick line frame shown in FIG. 4. Three elements among the above-described transparent readable element, transparent readable element, opaque readable element, and opaque readable element are shown. As an example in which a plurality of elements are arranged in different areas, a transparent readable element (31) is arranged in the first graphic area (4), and an opaque non-readable element (32) is arranged in the second graphic area (5). The state is shown in which the impermeable readable element (33) is arranged in the background area (6).

  In the present invention, the transparent readable element, the transparent unreadable element, the opaque readable element, and the opaque opaque element are configured by 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 in which halftone dots are continuously arranged in a certain direction without a certain distance gap, and is a broken line, a broken line, a straight line, or a curved line. Any wavy line is included in the scope of the technical idea of the present invention. In the present embodiment, first, a mode in which a transparent readable element, a transparent unreadable element, an opaque readable element, and an opaque non-readable element are formed of pixels will be described.

  In the configuration shown in FIG. 5, a plurality of transparent readable elements (31), which are circular pixels having a width (R1) and a height (H1), are arranged in the first graphic region (4). 4) represents the character “◯” as the first significant information, and the opaque element (32) that is a circular pixel having a width (R2) and a height (H2) in the second graphic area (5). ) Are arranged, the second graphic area (5) shows the character of “x” which is the second significant information, and the background area (6) has a circular shape of width (R3) and height (H3). A state in which a plurality of non-transparent readable elements (33) that are pixels are arranged is shown. In FIG. 5, the transparent unread element is not shown, but the transparent unread element (34) will be described as a width (R4) and a height (H4).

  In the present invention, the first graphic region (4) and the second graphic region (5) are arranged overlapping in the same region. In the present invention, the fact that the first graphic area (4) and the second graphic area (5) are disposed in the same area can be visually recognized by copying the copy printed matter (1) through the light. The position of the image, for example, the position where the first significant information of the character “◯” shown in FIG. 2 can be visually recognized, and the position of the image which can be visually recognized from the copy of the copy printed matter (1), for example, as shown in FIG. This means that the positions where the second significant information of the character “x” can be visually recognized overlap, and it does not mean that the elements arranged in the respective graphic areas overlap.

  In the present invention, the size of the transmission non-reading element (34) formed of the colored penetrating ink depends on the performance of the copying machine, but the size of the pixel width (R4) and height (H4) is the size that cannot be copied. At least one of them is 150 μm or less. This is because if one of the pixel width (R4) and height (H4) is a size that cannot be processed by the copying machine, copying cannot be reproduced.

  Further, the size of the transparent readable element (31) formed of the colored penetrating ink depends on the performance of the copying machine, but is 150 μm which is the maximum value of the size that the transparent unreadable element (34) is not copied by the copying machine. By making it larger and with this size, the transparent readable element (31) is copied on a copier.

  Further, the size of the opaque non-reading element (32) formed of colored ink depends on the performance of the copying machine, but the size of the pixel width (R2) and height (H2) as the size that cannot be copied. At least one is 120 micrometers or less. The reason why the size of the transparent non-reading element (34) formed with the colored penetrating ink and the size of the non-transparent non-reading element (32) formed with the colored ink are different from the principle of the effect of the present invention. It will be described later.

  Further, the size of the opaque readable element (33) formed of colored ink is the maximum value of the size at which the opaque readable element (32) is not copied by the copying machine, although it depends on the performance of the copying machine. By forming with a size larger than 120 μm, the impermeable readable element (33) is copied by a copying machine.

  As described above, the three regions in which elements having different upper and lower sizes are arranged are formed with the same area ratio so that they are 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). Subsequently, as an example, a configuration in which the first graphic region (4) and the second graphic region (5) are formed with the same area ratio will be described.

  For example, when the width (R2) and the height (H2) of the non-transparent non-readable element are half the size of the width (R1) and the height (H1) of the transparent readable element, FIG. As shown in (a), if one circular transparent readable element (31) is arranged in a certain area of the first graphic area (4) (illustrated by a broken line), the second graphic area In the same constant area of (5) (illustrated by a broken line), as shown in FIG. 6 (b), four circular impermeable elements (32) are arranged, so that the second figure The areas of the elements arranged in the same constant area of the area (5) and the first graphic area (4) are equal. At this time, as shown in FIG. 6, the interval at which the non-transparent non-readable element (32) is arranged is narrower than the interval at which the transparent readable element (31) is arranged. In this way, the first graphic region (4) is adjusted by adjusting the size and spacing of the transparent readable element (31) and the size and spacing of the non-transparent non-reading element (32). And the area ratio of the second graphic region (5) can be made equal. As described above, for example, in the technology of the anti-copying image line described in Patent Document 1, the technology for setting the first graphic region (4) and the second graphic region (5) to the same area ratio has already been described. It is publicly known. Here, the first graphic area (4) and the second graphic area (5) have been described, but in the first embodiment of the present invention, in the three areas including the background area (6), By adjusting the size of elements arranged in each region and the arrangement interval, the three regions have the same area ratio.

  In the present invention, the area ratios of the first graphic region (4), the second graphic region (5), and the background region (6) do not have to be completely equal, and when observed under diffuse reflection light As long as the first graphic area (4), the second graphic area (5), and the background area (6) are visually indistinguishable and can satisfy the state, the present specification It is included in the scope of the technical idea of “equal area ratio” described therein.

  Furthermore, in the present invention, each of the first graphic region (4), the second graphic region (5), and the background region (6) includes a plurality of transparent readable elements (31) and non-transparent non-reading described below. The arrangement of the element (32), the non-transparent readable element (33), and the transmissive non-readable element (34) is in a state of being observed as a constant density when observed with diffuse reflected light. Next, a configuration for observing the first graphic region (4) as a constant density when observed with diffuse reflected light will be described based on an example of the print image (3) shown in FIG.

  When the first figure region (4) is observed with diffuse reflected light, there are two configurations for observing a constant density, and the first configuration is as shown in FIG. A plurality of the transparent readable elements (31) are regularly arranged at the first pitch (P1). As shown in FIG. 7A, when the transmissive readable elements (31) are regularly arranged, the amount of light reflected from a certain area in the first graphic region (4) is constant. Observed as a constant concentration. In the present invention, “regularly arranged” when the transparent readable element (31) is formed of pixels means that the plurality of transparent readable elements (31) are in two different directions at the first pitch (P1). It is in a state of being arranged in a matrix. FIG. 7A shows a state in which the transparent readable elements (31) 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. 7B, the second configuration for observing the first graphic region (4) as a constant density when observed with diffuse reflected light is as follows. ) In which the transparent readable elements (31) are randomly arranged. At this time, it arrange | positions so that the ratio of the transparent readable element (31) arrange | positioned in the fixed area in the 1st figure area | region (4) may become the same over the whole 1st figure area | region (4). The As described above, since the transparent readable element (31) is fine, if the ratio of the transparent readable element (31) arranged in a certain area is the same, as shown in FIG. Even if the interval at which the transparent readable elements (31) are partially arranged in the first graphic region (4) is different, the first graphic region (4) is observed at a constant density as in the configuration shown in FIG. 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 graphic region (5) and the background region (6) are observed as a constant density when observed with diffuse reflected light is the same as the configuration described in the first graphic region (4). Yes, there are a configuration in which the non-transparent non-readable element (32) and the non-transparent readable element (33) are regularly arranged, and a configuration in which they are randomly arranged (not shown).

  Subsequently, a mode in which the transparent readable element (31), the transparent unreadable element (34), the opaque readable element (33), and the opaque opaque readable element (32) are configured by an image line will be described. When the transparent readable element (31), the transparent unreadable element (34), the opaque readable element (33), and the opaque non-readable element (32) are composed of lines, the first graphic area described so far (4) It is only necessary to replace each pixel formed in the second graphic area (5) and the background area (6) with an image line. An example of the print image (3) in which each element is composed of an image line will be described with reference to FIG.

  In the configuration shown in FIG. 8, a plurality of transparent readable elements (31) formed by an image line having an image line width (W1) are arranged at a pitch (P1) to form a character “◯”, and the image line width ( A plurality of non-transparent elements (32) formed by the image line W2) are arranged at the pitch (P2) to form the character “x”, and formed by the image line having the image line width (W3). A plurality of impervious readable elements (33) are arranged at a pitch (P3), and a background region (6) is formed. In FIG. 8, the transparent unread element is not shown, but the transparent unread element (34) will be described as the line width (W4) and the pitch (P4).

  When each element is composed of a stroke, the stroke width (W1) of the transparent readable element, the stroke width (W2) of the opaque non-readable element, the stroke width (W3) of the opaque readable element, and transparent unread The image line width (W4) of the element is formed in a range of sizes when each element is composed of the pixels described above.

  Also when each element is composed of an image line, it is formed with an equal area ratio so that it is visually the same color when observed with diffusely reflected light. As an example, a configuration in which the first graphic region (4) and the second graphic region (5) are formed with the same area ratio will be described.

  For example, when the line width (W2) of the non-transparent element is half of the line width (W1) of the transparent readable element, as shown in FIG. Assuming that one straight transparent readable element (31) is arranged in a certain fixed area of the first graphic area (4) (illustrated by a broken line), the same fixed area of the second graphic area (5) In the middle (illustrated by a broken line), as shown in FIG. 9B, two straight non-transparent elements (32) are arranged so that the first graphic area (4) and the second graphic area (2) The areas of the elements arranged in the same fixed area of the graphic area (5) become equal. At this time, as shown in FIG. 9B, the interval at which the non-transparent non-readable elements (32) are arranged is narrower than the interval at which the transparent readable elements (31) are arranged. As described above, even when each element is composed of a line, the first graphic area (4) and the second graphic can be adjusted by adjusting the line width of each element and the interval at which each element is arranged. The area ratio of the region (5) and the background region (6) can be made equal.

  Furthermore, even when each element is formed by an image line, each of the first graphic region (4), the second graphic region (5), and the background region (6) is observed with diffuse reflected light. Is observed as a constant concentration. The configuration for this is the same as that described in the form of copy-damped printed matter (1) formed of pixels, and each element may be regularly arranged at a constant pitch or randomly. Also good. The above is a description of the case where each element is configured by an image line. Hereinafter, an example in which each element is configured by a pixel will be described.

  Subsequently, the colored penetrating ink used in the present invention will be described. The colored penetrating ink used in the present invention is an ink obtained by blending a coloring material with an ink containing a penetrating component, and has 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. The “light color” referred to here means a color having high brightness under diffuse reflected light. Specifically, when colored penetrating ink is printed at an area ratio of 100%, it is under diffuse reflected light. Let L * have a value greater than 70. When this colored penetrating ink is printed on the substrate (2), a printed image having a color that can be clearly confirmed under reflected light can be formed, while the printed image is invisible or almost invisible under transmitted light. It has a feature that changes to a pale color. This “image disappears when see-through” effect is hereinafter referred to as “image disappearance effect”.

  The ink containing the penetrating component in the colored penetrating ink will be described. “Penetration component” means that when printed, it penetrates into the inside of the base material and increases the transmittance of the ink-colored portion. When the printed matter is observed under transmitted light, the printed image can be seen through (non-ink on the base material). This refers to a component having an effect (observed brighter than the colored portion). Specific examples of the penetrating component include resins, waxes, fats and oils that are close to the refractive index of the material constituting the substrate (for example, 1.49 for cellulose). When the penetrating component is printed, the increase in the transmittance of the base material is caused by filling the voids existing in the base material and suppressing light scattering inside the base material. As ink containing such penetrating components, ink generally called “watermark ink” such as Unimark manufactured by Teikoku Ink and E2 varnish manufactured by Joint Ink is sold, and this may be used. In addition, low-viscosity varnishes such as high-gloss-based medium (colorless and transparent ink, which is mainly used to dilute the color of colored ink and produces a particularly high gloss when printed) Is also effective as an ink containing a penetrating component.

  Next, a colored color material will be described. When a large amount of colored material is added to the ink containing the penetrating component, the transmittance of the printed matter is lowered, and the effect of “the image disappears when it is seen through” is lowered. Therefore, the colored penetrating ink used in the present invention needs to have a light color, and in order to stably produce a light color ink with high reproducibility, the coloring material also has high permeability and coloring power. It is desirable to use low pigments. Among such pigments, pigments that are generally sold as printing color materials include so-called “transparent pigments” and “fine particle pigments”, such as cobalt pigments and cyanine pigments, The number of colors is also abundant.

  Colored penetrating ink made by blending ink containing penetrating components with colored coloring material balances the reduction of light scattering inside the paper by penetrating components and the absorption of light by colored pigments. In such a case, the image having the object color has a characteristic of changing to a light color that is invisible or hardly visible when viewed through a watermark.

  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. Although it depends on the blending amount of the color material in the colored penetrating ink, in order to obtain an image disappearance effect in the region formed with the colored penetrating ink, the area ratio is preferably 75% or less.

  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 colored ink for printing the opaque readable element (33) and the opaque readable element (32) of the present invention is an ink having the same hue as the colored penetrating ink as described above. The material used for producing the colored ink is not particularly limited, and a general material suitable for the printing method to be printed may be used. The pigment used for general printing ink is opaque, so even if it is printed so that it is the same color as the image printed with colored penetrating ink, the effect that “color does not disappear even when watermarked” is the target of colored ink. can get. However, in order to enhance the effect of “color does not disappear even when watermarking” with colored ink, a transparent or white pigment may be added separately from the pigment for coloring. As such a pigment, for example, a metal pigment such as titanium or aluminum is suitable.

  The print image (3) is printed using the two types of ink as described above. 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 the copy-damped printed matter (1) in the first embodiment of the present invention will be described. As described above, in the first embodiment of the present invention, the print image (3) includes the transparent readable element (31), the opaque opaque element (32), the opaque opaque readable element (33), and the transparent unreadable element. Of the four elements of (34), a plurality of three elements are arranged in different areas. However, since the appearance of a visually recognized image differs depending on the three elements arranged in each area, The specific arrangement of each element arranged in the region and the effect produced in the copy-damped printed matter (1) having the configuration will be described.

  The arrangement of each element of the first embodiment is a first element set including a transparent readable element (31) and an opaque non-readable element (32), and the opaque readable element (33) and a transparent opaque element. When the reading element (34) is used as a second element set, the first graphic area (4) and the second graphic area (5) include the first element set or the second element set. The elements of one of the element sets are arranged, and in the background region (6), one element of the remaining element sets is arranged.

  As an arrangement of such elements, first, the elements of the first element set are arranged in the first graphic area (4) and the second graphic area (5), and the second element is arranged in the background area (6). A configuration in which the elements of the set are arranged will be described.

  In the example shown in FIG. 5, the transparent readable element (31) of the first element set is arranged in the first graphic area (4), and the impermeability of the first element set is arranged in the second graphic area (5). A state in which the reading element (32) is arranged is shown. Moreover, the state which the impervious readable element (33) of the 2nd element set is arrange | positioned in the background area | region (6) is shown. In this way, the elements of the first element set are arranged in the first graphic area (4) and the second graphic area (5), and the non-transparent readable elements ( 33) is a “first combination” of the present invention.

  In the case of the first combination, the transparent readable element (31) formed of the colored penetrating ink becomes invisible when viewed through light, and the opaque readable element (32) formed of colored ink and the opaque readable element. Element (33) is visible. The reason why the transparent readable element (31) becomes invisible when seen through light is that, as described above, the reduction of light scattering inside the paper due to the penetrating component of the colored penetrating ink and the light absorption by the colored pigment balance. Is. As a result, as shown in FIG. 10A, the first graphic region (4) formed by arranging a plurality of transparent readable elements (31) can be visually recognized in a negative state.

  Further, when copying with a copying machine, only the opaque non-reading element (32) formed with a size of 120 microns or less is not copied, and the transparent readable element (31) and the opaque readable element (33) are not copied. Duplicated. This is because the impermeable non-reading element (32) formed with colored ink and having a size of 120 microns or less cannot be read due to the limitation of the resolution of the copying machine. In contrast, an impermeable readable element (33) formed of the same colored ink is formed larger than 120 microns, and a transmissive readable element (31) formed of colored penetrating ink is formed larger than 150 microns. Is copied.

  The reason why the size for copying the transparent readable element (31) and the size for copying the opaque readable element (33) will be described. Pixels formed with colored penetrating ink are difficult to reproduce due to the light transmittance of the colored penetrating ink, and the color of the pixel is close to that of the paper. This tendency is remarkable in the vicinity of the outline of the pixel. When a pixel smaller than 150 microns is formed by the colored penetrating ink, the copying machine determines that the pixel does not exist. In this way, the pixel formed with the colored penetrating ink is assumed to have low reproducibility by the copying machine, and is larger than 150 microns as a size for copying the transparent readable element (31). As a result, as shown in FIG. 10B, the second graphic region (5) in which a plurality of impermeable elements (32) are arranged can be visually recognized in a negative state.

  The above is the effect of the first combination of the copy-strength printed matter (1) of the present invention, and different images can be visually recognized in the case of watermarking and copying.

  Next, a configuration in which the transparent unread element (34) of the second element set is arranged in the background area (6) for the first combination will be described. In this way, the elements of the first element set are arranged in the first graphic area (4) and the second graphic area (5), and the transparent unreadable elements of the second element set (in the background area (6)). 34) is a “second combination” of the present invention. Here, as shown in FIG. 11, the first non-transparent element (32) of the first element set is arranged in the first graphic area (4), and the first graphic area (5) has the first A configuration in which the transparent readable element (31) of the element set is arranged will be described.

  In the case of the second combination, when transparent to light, the transparent readable element (31) and the transparent unreadable element (34) formed with the colored penetrating ink are invisible, and the opaque non-reading formed with the colored ink is not visible. Element (32) is visible. As a result, as shown in FIG. 12 (a), the first graphic region (4) in which a plurality of impermeable elements (32) are arranged can be viewed in a positive state.

  Further, when copying with a copying machine, the transparent unreadable element (34) and the opaque opaque element (32) are not copied, and only the transparent readable element (31) is copied. As a result, as shown in FIG. 12B, the second graphic region (5) in which a plurality of transparent readable elements (31) are arranged can be viewed in a positive state. The second combination copy-printed product (1) is visible when the first graphic area (4) is positive when the first combination is watermarked, and the second graphic area when copied. (5) is different in that it can be viewed in a positive state.

  Subsequently, elements of the second element set are arranged in the first graphic area (4) and the second graphic area (5), and one element of the first element set is arranged in the background area (6). A configuration in which is arranged will be described.

  As an example, a transparent unreadable element (34) of the second element set is arranged in the first graphic area (4), and an opaque readable element (33) of the second element set is arranged in the second graphic area (5). ) Is arranged, and a configuration (not shown) in which the non-transparent non-read element (32) of the first element set is arranged in the background area (6) will be described. In this way, the elements of the second element set are arranged in the first graphic area (4) and the second graphic area (5), and the opaque element of the first element set is arranged in the background area (6). The combination in which (32) is arranged is the “third combination” of the present invention.

  In the case of the third combination, when transparent to light, the transparent unreadable element (34) formed of colored penetrating ink becomes invisible, and the opaque opaque element (32) formed of colored ink and opaque The readable element (33) is visible. The reason why the transparent unreadable element (34) becomes invisible when seen through light is the same as that of the transparent readable element (31) and is due to the characteristics of the colored penetrating ink. As a result, as shown in FIG. 13A, the first graphic region (4) formed by arranging a plurality of transparent unread elements (34) can be viewed in a negative state.

  When copying with a copying machine, the transparent unreadable element (34) and the opaque opaque element (32) are not copied, and only the opaque readable element (33) is copied. The non-transmissible element (34) formed of the colored penetrating ink has a size of 150 microns or less. In this case, the copying machine determines that no pixel exists due to the light transmittance of the colored penetrating ink described above. End up. As a result, as shown in FIG. 13B, only the opaque readable element (33) is copied, and the second graphic area (5) formed by arranging a plurality of the opaque readable elements (33) is positive. Visible at.

  The above is the effect of the third combination of the copy-controlled printed matter (1) according to the present invention. Similar to the first combination, different images can be visually recognized between the case of watermarking and copying. The first combination differs in that the second graphic area can be viewed in a positive state when copied.

  Next, a configuration (not shown) in which the transparent readable element (31) of the first element set is arranged in the background area (6) for the third combination will be described. Thus, the elements of the second element set are arranged in the first graphic area (4) and the second graphic area (5), and the transparent readable elements (31 of the first element set are arranged in the background area (6). ) Is a “fourth combination” in the present invention. Here, the opaque readable element (33) of the second element set is arranged in the first graphic area (4), and the transparent readable element of the second element set is arranged in the second graphic area (5). A configuration in which (34) is arranged will be described.

  In the case of the fourth combination, the transparent readable element (31) and the transparent unreadable element (34) formed with the colored penetrating ink become invisible when seen through light, and the opaque readable element formed with the colored ink. (33) is visible. As a result, as shown in FIG. 14A, the first graphic region (4) in which a plurality of impermeable readable elements (33) are arranged can be viewed in a positive state.

  Further, when copying with a copying machine, only the transparent unreadable element (34) is not copied, but the transparent readable element (31) and the opaque readable element (33) are copied. As a result, as shown in FIG. 14B, the second graphic region (5) in which a plurality of transparent unread elements (34) are arranged can be visually recognized in a negative state. The fourth combination copy printed matter (1) differs from the first combination in that the first graphic area (4) can be viewed in a positive state when watermarked.

  As described above, the copy-prohibited printed matter (1) according to the present invention can visually recognize different designs depending on whether it is watermarked or copied, and one of the conditions for determining authenticity does not use a tool. Therefore, it is excellent in authenticity discrimination.

  Of the combinations constituting the three areas of the copy-strength printed matter (1) in the present invention, the combination of the unreadable element groups in which the first graphic area (4) and the background area (6) cannot be copied is the respective element group. Although it depends on the shape of the elements constituting the opacity, the line width (W2) of the non-transparent non-read element (32) should be about 30 microns smaller than the line width (W4) of the non-transparent element (34). good. At the current technical level of copiers, even elements that should not be copied are limited to thin lines and dots or partial defects, and may be reproduced as faint images. The visibility of the second graphic area (5) may be reduced. The reason for the above-described configuration is that the opaque non-reading element (32) printed with colored ink is easier to reproduce and reproduce than the transparent non-reading element (34) printed with colored penetrating ink. This is because the copy reproducibility (characteristics that can be copied and cannot be copied) of the two elements is made equal by making (32) smaller. In this combination, the above-mentioned “second combination”, the first non-transparent element (32) in the first graphic area (4) and the transparent readable element (31) in the second graphic area (5). When the transparent unreadable element (34) is formed in the background area (6) and the “third combination”, the transparent unreadable element (34) and the second graphic area ( 5) corresponds to the case of forming the opaque readable element (33) and the opaque readable element (32) in the background area (6).

(Second Embodiment)
The configuration of the print image (3) of the second embodiment is shown in FIG. 15, and differences from the print image (3) of the first embodiment will be described. The print image (3) of the second embodiment is different from the print image (3) of the first embodiment as shown in FIG. It has the structure which has a common area | region (7) common to some graphic areas (5). In the present invention, the common area (7) is an area where the first graphic area (4) and the second graphic area (5) overlap, and the first graphic area (4) and the second graphic area. This is an area where elements common to the area (5) are arranged.

  In the first embodiment, three elements of the transparent readable element (31), the opaque opaque element (32), the opaque readable element (33), and the transparent unreadable element (34) are the first graphic. Although the configuration is arranged in the region (4), the second graphic region (5), and the background region (6), the second embodiment is a transparent readable element (described in the first embodiment). 31), an opaque impervious element (32), an impervious readable element (33), and a transparent unreadable element (34) are arranged in each region. The specific arrangement of each element will be described later.

When the copy-control printed matter (1) of the second embodiment is observed under diffuse reflected light, the first graphic region (4), the second graphic region (5), the background region (6), common The four areas of the area (7) are of the same color, and each area cannot be identified. Then, when the copy-damped printed matter (1) of the second embodiment is made transparent, as an example, as shown in FIG. 16 (a), the first graphic area (4) in the printed image (3). The common area (7) is invisible through the light, and the remaining area blocks the light, so that the first significant information appearing in the first graphic area (4) can be visually recognized as an image.

  Further, when the copy-prohibited printed matter (1) of the second embodiment is copied by a copying machine, as an example, as shown in FIG. 16B, the second graphic area (5) of the print image (3) is shown. ) And the common area (7) are not copied and become invisible, the remaining areas are copied and become visible, and the second significant information appearing in the second graphic area (5) becomes visible as an image. Thus, the common area (7) is an area that is visually recognized in common with a part of the first significant information and the second significant information.

  Hereinafter, the detailed configuration of the second embodiment will be described. The configuration of each element, the color material forming each element, and the base material are the same as those in the first embodiment, and are arranged in each region. Each element to be described will be described.

  The arrangement of each element in the second embodiment is a first element set including a transparent readable element (31) and an opaque non-readable element (32) as a set, and the opaque readable element (33) and a transparent opaque element. When the reading element (34) is used as a second element set, the first graphic area (4) and the second graphic area (5) include the first element set or the second element set. The elements of one of the element sets are arranged, the background area (6) is arranged in one element of the remaining element sets, and the elements of the remaining element set arranged in the background area (6) are arranged. The other element is arranged in a common area (7) common to a part of the first graphic area (4) and the second graphic area (5). That is, in the second embodiment, two elements are arranged in the first graphic area (4) and the second graphic area (5), compared to the first embodiment. Elements common to the first graphic area (4) and the second graphic area (5) are arranged in the common area (7) where the areas overlap each other.

  The arrangement of the elements of the second embodiment is the “first combination”, “second combination”, “third combination”, and “first combination” of the copy-controlled print (1) of the first embodiment. In each of the four combinations, the remaining elements that do not form the print image (3) are arranged in the common area (7). The description will be made based on the “first combination” of the embodiment, and the description of the other arrangements will be omitted.

  FIG. 17 is an enlarged view of a thick line frame that is a part of the print image (3) shown in FIG. 15, and the transparent readable element (31) of the first element set is arranged in the first graphic area (4). The opaque element (32) of the first element set is arranged in the second graphic area (5), and the opaque readable element (33) of the second element set is arranged in the background area (6). The transparent unread element (34) of the second element set is arranged in the common area (7). With respect to the first combination of the first embodiment, the transparent unread element (34) that does not form the print image (3) is arranged in the common area (7).

  When the copy-stamped printed matter (1) of the second embodiment shown in FIG. 17 is made transparent, the transparent readable element (31) and the transparent unreadable element (34) formed with the colored penetrating ink cannot be seen, and the colored The impervious non-readable element (32) and the impervious readable element (33) formed of the same ink are visible. As a result, as shown in FIG. 18A, the first graphic region (4) formed by arranging a plurality of transparent readable elements (31) and transparent unreadable elements (34) can be visually recognized in a negative state.

  Further, when copying with a copying machine, the transparent unreadable element (34) and the opaque opaque element (32) are not copied, and the transparent readable element (31) and the opaque readable element (33) are copied. . As a result, as shown in FIG. 18 (b), the second graphic region (5) formed by arranging a plurality of transparent unreadable elements (34) and non-transparent unreadable elements (32) can be visually recognized in a negative state. .

  As described above, also in the second embodiment, different images can be visually recognized in the case of watermarking and copying, and the authenticity discrimination is excellent. In addition, the copy printed matter (1) of the second embodiment has a common area (7) where the first graphic area (4) and the second graphic area (5) overlap as in the first embodiment. It is not necessary to avoid the image configuration in which () occurs, and an arbitrary image can be used completely in the two image areas, so there is no design restriction.

  When the copy-damped printed matter (1) shown in FIGS. 4 and 15 is observed under diffuse reflected light, the printed image (3) is merely visible as it is, and no information can be obtained. By appropriately arranging the region (4), the second image region (5), and the background region (6) to form the printed image (3), various figures, designs, marks, patterns are formed under diffuse reflected light. Further, it may be configured such that significant information such as numbers, letters, symbols, etc. can be visually recognized. In addition, the structure of the copy printed matter (1) in which significant information can be visually recognized by observation under diffuse reflected light will be described in Example 2.

  Hereinafter, an example of a copy-stamped printed matter that is specifically produced according to the above-described mode for carrying out the invention will be described in detail. However, the present invention is not limited to this example.

Example 1
Example 1 is an example of the copy control printed matter described in the first embodiment.

  FIG. 19 shows a copy-check printed matter (1) in the first embodiment. The copy proof printed matter (1) is formed by forming a printed image (3) having a light blue color on a substrate (2). For the base material (2), general white fine paper (basis weight 81.4 g / square meter, manufactured by Nippon Paper Industries Co., Ltd.) was used.

  As described above, there are four combinations of the element groups constituting the first graphic area, the second graphic area, and the background area constituting the copy-checked printed matter, but the production method is the same for any combination. Hereinafter, as an example, a “first combination” (a combination using a transparent readable element for the first graphic area, an opaque non-readable element for the second graphic area, and an opaque readable element for the background area) will be described.

  FIG. 20 is an exploded view of the print image (3) shown in FIG. 19, and is composed of the image shown in FIG. 20 (a) and the image shown in FIG. 20 (b). An image (21) shown in FIG. 20 (a) is composed of a first graphic region (4), and a linear transparent readable element (31) having a width (L1) of 0.24 mm is arranged at a pitch (P1) 0. .6 mm and equally spaced. Also, the image (22) shown in FIG. 20B is composed of a second graphic area (5) and a background area (6). The second graphic area (5) has a pixel height (H2) 95. Square impervious non-reading elements (32) having a micron and a pixel width (W2) of 95 microns were arranged at equal intervals with a pitch in the height direction of 200 microns and a pitch in the width direction of 200 microns. In the background area (6), linear non-transparent readable elements (33) having an image line width (W3) of 0.24 mm were arranged at equal intervals with a pitch (P3) of 0.6 mm. The area ratio of each element is 40% for the transparent readable element (31) and the opaque readable element (33), but 45% for the opaque readable element (32). This is because the outline of the element fluctuates in each printing process.

  Next, as for ink, colored penetrable ink is 97% by weight of penetrating ink (Unimark, Teikoku Ink), and 3% of blue transparent coloring pigment (Dipiroxide Side Blue, manufactured by Dainichi Seika Kogyo). Prepared by blending at a percentage. As the colored ink, a commercially available offset ink having the same color as the colored penetrating ink was used.

  Using the above paper and ink, the image (21) shown in FIG. 20 (a) is printed with colored penetrating ink, and the image (22) shown in FIG. 20 (b) is printed with colored ink by an offset printing method. A copy-strength printed matter (1) of Example 1 shown in FIG. 19 was obtained.

  As shown in FIG. 21 (a), the copy-printed printed matter produced by the above procedure has the first graphic area (4), the second graphic area (5), and the background area (6) in the same color, and each of them is visible to the naked eye. Although the areas cannot be distinguished, if they are made transparent, the first graphic area (4) can be visually recognized as shown in FIG. 21 (b), and the latent image appearance effect can be obtained. Was confirmed. 21A was copied with a copying machine A (ImagePress C1 +, manufactured by Canon), and the anti-copying effect was confirmed. As shown in FIG. 21C, the copy (8) ), The second figure area (5) can be visually recognized, and it has been confirmed that a copy-strengthening effect can be obtained.

(Example 2)
Example 2 is an example of the copy control printed matter described in the second embodiment. Further, this is an example in which a print image is formed with a pattern pattern.

  FIG. 22 (a) shows a copy-control printed matter (1) in the second embodiment. The copy proof printed matter (1) is formed by forming a printed image (3) having a light blue color on a substrate (2). The materials other than the image configuration, such as ink, the printing method, and the like are the same as those in the first embodiment, and a description thereof will be omitted.

  FIG. 23 is an exploded view of the print image (3) shown in FIG. 22, and includes the images shown in FIGS. The image shown in FIG. 23A shows a portion corresponding to the first graphic area (4), and the first graphic area (4) and the second graphic area ( When 5) overlaps, a common area (7) common to a part of the second graphic area (5) is provided in the first graphic area (4). In addition, the area | region which is the 1st figure area | region and is not in common with the 2nd figure area | region (5) is shown as code | symbol (4 ').

  The image shown in FIG. 23B shows a portion corresponding to the second graphic area (5), and the first graphic area (4) and the second graphic area ( When 5) overlaps, a common area (7) having a part in common with the first graphic area (4) is provided in the second graphic area (5). Note that the second graphic area (5), which is not common to the first graphic area (4), is shown as a reference numeral (5 ′).

  The image shown in FIG. 23C shows a portion corresponding to the background area (6). In addition, although the space | gap is vacant in each area | region, this is an example given from the viewpoint of the designability of a design, Comprising: The printed matter of this invention can be produced irrespective of the presence or absence of a space | gap. As described above, there are four combinations of the element groups constituting the first graphic area, the second graphic area, and the background area constituting the copy-damped printed matter (1), but the production method is the same for any combination. Therefore, as an example, the first graphic area has an opaque readable element, the second graphic area has an opaque readable element, the common area has an opaque readable element, and the background area has a transparent readable element. The combinations used are described.

  Details of the image areas of the copy-check printed matter (1) of the second embodiment will be described below. In the image corresponding to the first graphic region (4) shown in FIG. 24A, the first graphic region (4 ′) has an image line width (W3) of 0. 0 as shown in FIG. The 24 mm curved impermeable readable elements (33) were arranged at equal intervals with a pitch (P3) of 0.6 mm. Further, as shown in FIG. 24 (c), the common region (7) has a rectangular non-transparent element (32) having a pixel height (H2) of 95 microns and a pixel width (W2) of 95 microns. Were arranged at equal intervals with a pitch of 200 microns and a pitch of 200 microns in the width direction.

  In the image corresponding to the second graphic area (5) shown in FIG. 25 (a), the second graphic area (5 ') has an image line width (W4) of 0. 0 as shown in FIG. The 120 mm curved transmission non-reading elements (34) were arranged at equal intervals with a pitch (P4) of 0.3 mm. In addition, as described above, the common area (7) has a square impervious non-reading element (32) having a pixel height (H2) of 95 microns and a pixel width (W2) of 95 microns, and a pitch in the height direction of 200 microns. , And arranged at equal intervals with a pitch of 200 microns in the width direction.

  In the image corresponding to the background region (6) shown in FIG. 26 (a), as shown in FIG. 26 (b), a curved transparent readable element (31) having an image line width (W1) of 0.24 mm. Were arranged at equal intervals with a pitch (P1) of 0.6 mm.

  Each region of the printed image (23) having the above-described configuration was printed with colored ink and colored penetrating ink by an offset printing method to obtain a copy-damped printed matter (1) shown in FIG. When the produced copy-damped printed matter (1) of Example 2 is observed under diffuse reflected light, as shown in FIG. 27, the printed image (3) can be visually recognized as a colored pattern, but the first graphic region (4 ), The second graphic area (5) and the background area (6) are of the same color and cannot be distinguished with the naked eye. When this is held over light, the first graphic area can be seen predominantly as shown in FIG. 28 (a). When copied, the second graphic is shown in the copy (8) as shown in FIG. 28 (b). The area looked proactive.

DESCRIPTION OF SYMBOLS 1 Copy proof print 2 Base material 3 Print image 4, 4 '1st graphic area 5, 5' 2nd graphic area 6 Background area 7 Common area 8 Copy 31 Transparent readable element 32 Non-transparent non-read element 33 Non-transparent Readable element 34 Transparent unread element

Claims (4)

  At least part of the base material is a color penetrating ink containing a coloring material and a penetrating component. A transparent readable element comprising: a non-transparent non-readable element having a size that cannot be copied by a copying machine with a colored ink having the same hue as the colored penetrating ink; Among the transparent readable elements, at least three elements are used to surround the first graphic area, the second graphic area, and at least a part of the first graphic area and at least a part of the second graphic area. And the first graphic area and the second graphic area are overlapped and arranged in the same area, and the transparent readable element and the opaque non-readable element are With one element set The non-transparent readable element and the transparent non-readable element are set as a second element set, and the first graphic region is one of the first element set and the second element set. The second graphic area has a plurality of other elements of the one element set to express the second significant information. The background area is formed by including a plurality of elements of one of the other element sets, and the first graphic area, the second graphic area, and the background area are color-matched, When the area ratio of each region is formed equally and observed under transmitted light, the element formed with the colored penetrating ink is not visually recognized, and among the first significant information and the second significant information, When significant information on one side can be visually recognized and copied with a copier The element formed in a size not copied by the copying machine is not copied, the element formed in the size copied by the copying machine is copied, and the other significant information can be visually recognized. Duplicate prints to be printed.   The printed image has a common area in a part of the first graphic area and the second graphic area, and the common area includes a plurality of other elements of the other element set forming the background area. 2. The copy-tension printed matter according to claim 1, further comprising:   3. The copy-tension printed matter according to claim 1, wherein each of the elements includes at least one of an image line and a pixel, or a combination thereof.   The copy-strengthened printed matter according to any one of claims 1 to 3, wherein the coloring material is a coloring pigment and / or a coloring dye, and a blending ratio in the colored penetrating ink is 10% or less.

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