JP7024979B1 - How to create data for anti-counterfeit printed matter and anti-counterfeit printed matter and its creation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-counterfeit printed matter, a method for creating data for an anti-counterfeit printed matter, and an apparatus thereof, which can be easily determined to be true or false by a normal color copier. SOLUTION: A plurality of units arranged in a matrix at a predetermined pitch on a substrate have a first image area and a second image area of complementary colors or opposite colors and are on the same line. The invisible pattern is formed by the first stroke that is formed and reproduced by copying the first stroke area, and the offset pattern against the invisible pattern is formed by the second stroke that is not reproduced by copying the second stroke region. At least a part of the strokes formed and constituting the first stroke region in the plurality of units has a chromatic color, and the first stroke and the second stroke in each unit are totaled. It is an anti-counterfeit printed matter formed so that the area ratio is the same among the units. [Selection diagram] FIG. 26

Description

The present invention relates to an anti-counterfeit printed matter, a method for creating data for an anti-counterfeit printed matter, and a device for creating the data.

Counterfeiting and falsification prevention measures are important for securities such as banknotes, stock certificates and bonds, and printed matter such as various certificates and important documents. Forgery and falsification prevention measures for these printed matter can be visually recognized mainly by using a pattern with diversified geometric patterns in the design and by adding some means and action to the printed matter. There is a way to reveal a latent image that cannot be done. Typical examples of the former are tint block, colored pattern and relief pattern widely used in the design of securities printed matter, and the latter typical example is that the color is normally reproduced by a latent image intaglio or a color copier. There are functional inks or copy protection strokes that are not used.

As a typical technique of a method of making a latent image that could not be visually recognized appear in a copy by adding some means and action to the above-mentioned printed matter, a copy protection image is generally used. There is a series of technologies called. In addition, a latent image is printed on the surface of the paper with halftone dots, and a background with the same density as the latent image is printed simultaneously with a universal line. By overprinting with transparent ink, the surface of the printed matter is finished in a good-looking manner, and when copied, the pattern disappears, the background is reproduced, the latent image is not reproduced, and the difference in density between the background and the latent image becomes clear. There have been many applications for a method that can be seen at a glance as a copy.

In addition, the applicant has a curved aggregate pattern in which the image lines of the portion without the latent image are arranged as continuous lines and the image lines of the portion with the latent image are arranged at regular intervals in the basic line direction. Of the constant-period break lines of the portion that is composed of fixed-period break lines consisting of image lines and has a latent image, the portion corresponding to one cycle consisting of one continuous line portion and a non-image portion in the basic line direction. Of the continuous lines of the part where the latent image is not applied, the total of the image area of the above-mentioned area corresponds to the same length as one cycle consisting of the image part and the non-image part in the above-mentioned latent image part. In the image line that is equal to the area and is a fixed-period break line in the portion where the latent image is applied, the image line of the fixed-period break line intersects with each other, and one of the stroke lines is used. Is filed for a method for creating a composite element security pattern and a printed matter thereof, which is characterized by deleting the image within the range of the image width of the other image line (see, for example, Patent Document 1).

Further, the applicant forms a background portion having the same density by the first size image reproduced by the copying machine and the second size image not reproduced by the copying machine, and further, copying. By forming a visible pattern with a third-sized image that is not reproduced by the machine, when the printed matter is observed under normal light, the visible pattern is produced by the density of the visible pattern formed on the background. Although it is observed, when the printed matter is copied by a copier of a color copier, the third size image line forming the visible pattern portion and the second size image line forming the background portion are not reproduced. As a result, we have applied for a copy and tamper-proof printed matter having an image change effect in which an invisible pattern completely different from the visible pattern appears (see, for example, Patent Document 2).

In addition, the applicant has the effect of changing the visible pattern formed on the printed matter and the invisible pattern appearing when copying with a copying machine, and the invisible pattern appearing on the copy is like a photographic image. We have applied for an anti-counterfeit printed matter that can be a continuous gradation image (see, for example, Patent Document 3). In this printed matter, an invisible pattern having continuous gradation is formed by large and small (thick and thin) images, and a camouflage image in which the density is inverted from the image is formed by an image of a size that cannot be reproduced by a copier. Therefore, the invisible pattern is not confirmed even if the printed matter is visually recognized, but the camouflage image line disappears when the image is copied by the copying machine, and the invisible pattern having continuous gradation appears.

In addition, the applicant has the first and second strokes arranged so as to face each other with respect to the center along the first direction, and the second direction orthogonal to the first direction. Image elements having a third image line and a fourth image line arranged so as to face each other with respect to the center are arranged in a plurality of matrices at a constant pitch, and each image is arranged. The first line and the second line, and the third line and the fourth line in the line element are in a negative-positive relationship, and are invisible by the first line or the second line. We have applied for an anti-counterfeit printed matter characterized in that a pattern is formed and a second invisible pattern is formed by a third stroke or a fourth stroke (see, for example, Patent Document 4).

Further, as an anti-counterfeiting measure for high-resolution hard copy, the applicant has arranged a plurality of sets of one first area and one second area adjacent to the first area, and each second area is arranged. The periphery of the region is surrounded by a plurality of first regions, the first region has a larger area than the second region, and the second region is composed of black ink containing an infrared absorbing dye. It has a region of 2a and a second b region that is a black system composed of ink that does not contain infrared absorbing dyes, and the ratio of the second a region to the second b region in each of the second regions is Accordingly, an application has been filed for a halftone dot printed matter characterized in that a gradation image is formed by a second region in a plurality of second regions (see, for example, Patent Document 5).

Further, the applicant has the same color as the first line art printed with the first color material that absorbs or emits light at a specific wavelength and the first color material under visible light that does not absorb or emit light at a specific wavelength. It is composed of a second line art printed with a second color material that can be seen, and the first line art and the second line art are composed of a background area and a latent image area having different image widths, respectively, and the latent image of the second line art. An anti-counterfeit printed matter characterized in that the image region has the same shape and size as the latent image region of the first line art, the first line art and the second line art overlap, and the density of the background region and the latent image region is equal. An application has been filed (see, for example, Patent Document 6).

Japanese Patent No. 3268418 Japanese Patent No. 5692663 Japanese Patent No. 6394975 Japanese Patent No. 4635160 Japanese Patent No. 3544536 Japanese Patent No. 4441634

However, in the printed matter of Patent Document 1, when the plate making and print output devices with high functionality in recent years are used, the image line configuration can be easily reproduced, so that the composite element security function cannot be exhibited. was there.

Further, in the printed matter of Patent Document 1, although the effect at the time of copying is improved, the pattern that was a visible pattern is not completely replaced, and the visible pattern is prioritized for the portion where the visible pattern and the latent image overlap. There is a problem that the latent image is partially chipped and the visibility of the image visually recognized after copying is improved.

Further, in the printed matter of Patent Document 2, since the visible pattern and the invisible pattern appearing in the copy are completely interchanged in the printed matter and the copy, the visibility of the image visually recognized after copying is improved, but the visible pattern and the invisible pattern are invisible. The image change effect is created by the on / off relationship that the regular image lines that form the pattern remain or disappear, and since the invisible pattern itself is a binary image, the visible pattern disappears and is invisible. There remains a problem that the method of creating a counterfeit product by processing the image of the copy in which the pattern appears does not have high counterfeit resistance.

Further, the printed matter of Patent Document 3 has an extremely high composite element security effect against the act of processing a copy by forming an invisible pattern having continuous gradation, but an image forming an invisible pattern. Since the lines and the images that offset them are composed of "lines" and "dots", the visibility of the invisible pattern depends on the image processing performance of the bandpass filter installed in the copier, and the camouflage. The image line may not disappear completely. Therefore, there remains the problem that the security effect of the composite element is not sufficient.

Further, the anti-counterfeit printed matter according to Patent Document 4 has a rich design that can provide a visible pattern in normal observation and has high visibility of a latent image by a simple discriminator, and can be manufactured at low cost. Although it has excellent effects, it is not sufficient as an anti-counterfeiting measure for high-resolution hard copies.

Further, although the printed matter of Patent Documents 5 and 6 has an excellent effect as an anti-counterfeiting measure in a high-resolution hard copy, it determines the presence or absence of a coloring material that absorbs or emits light at a specific wavelength, for example, an infrared absorbing dye. Because of the peculiarity, since the discriminator is a special device composed of an optical system mechanical component or a mechanical component that receives a specific electromagnetic wave, there is a problem that simple discrimination as described in Patent Documents 1 to 4 cannot be performed.

Further, although the printed matter of Patent Documents 1 to 3 has an excellent effect that it can be produced at low cost, it is insufficient as an anti-counterfeiting measure for high-performance hard copy. As a result, there has been a demand for anti-counterfeit printed matter that can share a plurality of anti-counterfeiting measures within a limited print area and can select an authenticity discrimination means according to the user's specification environment and position.

The anti-counterfeit printed matter of the present invention comprises a plurality of units arranged in a matrix at a predetermined pitch on at least a part of the substrate, and each unit is formed on the same line along the first direction. An invisible pattern is formed by a first image having a first image area and a second image area and reproduced by copying formed in the first image area, and a second image is formed. The second stroke, which is not reproduced by copying formed in the line region, forms an offset pattern for the invisible pattern, and the first stroke region and the second stroke region are complementary colors or opposite colors, and a plurality of them. At least a part of the first strokes constituting the first stroke region in the unit has a chromatic color, and the total stroke area of the first stroke and the second stroke in each unit. It is characterized in that the rates are the same among the units.

The second image area in the anti-counterfeit printed matter of the present invention may be divided and arranged in two places so as to sandwich the first image area.

In each unit of the anti-counterfeit printed matter of the present invention, the area of the first image area may be smaller than that of the second image area.

The total image area ratio of the first image and the second image in each unit of the anti-counterfeit printed matter of the present invention may be 5 to 40%.

A third image line forming a visible pattern may be further formed in a part of the second image line region in the anti-counterfeit printed matter of the present invention.

The color material forming the first image line in the anti-counterfeit printed matter of the present invention contains an infrared absorbing dye, and the color material forming the second image line contains an infrared absorbing dye. It may not be.

The invisible pattern in the anti-counterfeit printed matter of the present invention has gradation because it is formed by changing the image area ratio of the first image line for each unit, and the offset pattern for each unit is the second image. It may have gradation by being formed by changing the image area ratio of the line.

The method for creating data for anti-counterfeit printed matter of the present invention is a step of inputting invisible pattern image data for creating an invisible pattern by using an invisible pattern input means for inputting invisible pattern image data for creating an invisible pattern. The step of converting the invisible pattern image data into the first CMYK image data by the invisible pattern generating means for generating the invisible pattern using the input invisible pattern image data, and the step of converting the invisible pattern image data into the first CMYK image data, and using the invisible pattern generating means, the first step. A step of applying a critical value array image to the CMYK image data of 1 to generate first image data for forming an invisible pattern in the first image area of each unit, and generating an offset pattern for the invisible pattern. A step of generating the offset pattern image data as the second CMYK image data by using the offset pattern generation means, and applying a mask to the first CMYK image data by using the offset pattern generation means of each unit. Using the step of generating the second image data for forming the offset pattern in the second image area and the image composition means for synthesizing the images, the first image data of the invisible pattern is added to each unit. A step of generating a composite image by synthesizing the second stroke data of the offset pattern is provided, and the stroke area ratio obtained by totaling the first stroke data and the second stroke data in each unit is provided. It is characterized in that the first image line data and the second image line data are formed so as to be the same between the units.

The method for creating data for anti-counterfeit printed matter of the present invention includes a step of applying a first profile to the first CMYK image data by using an invisible pattern generating means, adjusting gradation and color balance, and generating an offset pattern. Means may be further provided with a step of applying the second profile to the second CMYK image data and adjusting the gradation and color balance.

The method for creating data for anti-counterfeit printed matter of the present invention is a step of inputting visible pattern image data for creating a visible pattern by using a visible pattern input means for inputting visible pattern image data for creating a visible pattern. The step of converting the visible pattern image data into the third CMYK image data by the visible pattern generating means for generating the visible pattern using the input visible pattern image data, and the step of converting the visible pattern image data into the third CMYK image data, and the visible pattern generating means. Using the step of applying the third profile to the CMYK image data of 3 and changing the gradation and the color balance, and the visible pattern generation means, the mask is applied to the third CMYK image data, and the first of each unit. Using an image compositing means and a step of generating a third image data that forms a visible pattern in a part of the image area of 2, each unit has an offset pattern with the first image data of the invisible pattern. A step of generating a composite image data by synthesizing the second image line data of the above and the third image line data of the visible pattern may be further provided.

The anti-counterfeit print data creation device of the present invention uses the invisible pattern input means for inputting the invisible pattern image data for creating the invisible pattern and the input invisible pattern image data to generate the invisible pattern. The invisible pattern generation means includes a pattern generation means, an offset pattern generation means for generating an offset pattern for an invisible pattern, and an image composition means for synthesizing an image, and the invisible pattern generation means converts the invisible pattern image data into the first CMYK image data. Then, a critical value array image is applied to the first CMYK image data to generate first image data that forms an invisible pattern in the first image area of each unit, and the offset pattern generation means cancels out. The pattern is generated as the second CMYK image data, the mask is applied to the first CMYK image data, and the second image data forming the offset pattern in the second image area of each unit is generated. The image synthesizing means generates composite image data in which the first image data of the invisible pattern and the second image data of the offset pattern are combined in each unit, and the invisible pattern generating means and the offset pattern generating means , The first image data and the second image data so that the image area ratio of the sum of the first image data and the second image data in each unit is the same between the units. It is characterized by forming.

The invisible pattern generation means in the data creation device for anti-counterfeit prints of the present invention applies the first profile to the first CMYK image data, adjusts the gradation and the color balance, and the offset pattern generation means is the second. A second profile may be applied to the CMYK image data of the above to further adjust the gradation and color balance.

The device for creating data for anti-counterfeit printed matter of the present invention uses a visible pattern input means for inputting visible pattern image data for creating a visible pattern and visible pattern image data to generate a visible pattern. The pattern generation means and the visible pattern generation means convert the visible pattern image data into the third CMYK image data, apply the third profile to the third CMYK image data, change the gradation and the color balance, and change the gradation and the color balance. A mask is applied to the third CMYK image data to generate a third image data that forms a visible pattern in a part of the second image area of each unit, and the image synthesizing means is applied to each unit. Further, it may be further provided to generate a composite image data in which the first image data of the invisible pattern, the second image data of the offset pattern, and the third image data of the visible pattern are combined.

According to the anti-counterfeit printed matter of the present invention, the appearance of an invisible pattern by color copying makes it possible to inexpensively and easily perform authenticity discrimination using a machine called a color copier, which is easily available to anyone.

In addition, a plurality of anti-counterfeiting measures can be taken within a limited printing area, and a authenticity determination means can be selected according to the user's specification environment and position. Further, the visible pattern having a design property prepared for the printed pattern in the anti-counterfeit printed matter of the present invention can express various beautiful expressions such as a continuous gradation image, a full-color image and a rainbow effect in addition to a monochromatic pattern, and is invisible. The visibility is not impaired when the pattern appears, and by superimposing the discriminator on the printed matter, the invisible pattern can be easily and clearly developed.

Further, since the anti-counterfeit printed matter of the present invention can make an image visually recognized in a color copy an image having a complicated continuous gradation, when it is used for an identification card including a face image or the like, a diploma, or the like. By comparing the invisible pattern with the facial photograph formed on the copy, the authenticity can be easily determined.

Further, the anti-counterfeit printed matter of the present invention is excellent in cost performance because it is possible to bring about an anti-counterfeit effect depending on the composition of the image lines, and the plate making and printing methods are not limited at all, so that the printing method has a degree of freedom. It has the effect of being there.

Further, by using the method for creating data for anti-counterfeit printed matter of the present invention, the copy-preventing effect can be reliably reproduced without being affected by the image processing performance of the bandpass filter or the like mounted on the color copier. As a method that can be used, anyone can easily perform the technique of embedding in a print pattern so that a continuous gradation image such as a photographic image can be reproduced as a continuous gradation image using a general color copier. It is possible.

Furthermore, by using the anti-counterfeit printed matter data creation device of the present invention, personal information of continuous gradation images, so-called facial photographs, can be easily attached to printed matter, so that certificates can be printed and issued by each local government. It is also possible to print a face photo as personal information in the passport.

The figure which shows the state which observed the anti-counterfeit printed matter by one Embodiment of this invention under normal light, and the copy | reproduced matter obtained by color copying by a color copier. The figure which shows the state which observed the anti-counterfeit printed matter by the same embodiment under normal light. The figure which shows the copy obtained by color-copying the anti-counterfeit printed matter by the same embodiment with a color copier. The figure which shows the state which superposed the discriminator in a predetermined position on the anti-counterfeit printed matter by the same embodiment. The figure which shows the state which observed the anti-counterfeit printed matter by the same embodiment under infrared light. The graph which shows the relationship of the color density of the input / output in a normal color copier that can be used in the authenticity discrimination of the anti-counterfeit printed matter by the same embodiment. The face photograph is a diagram showing that color expression is possible with the color components of red and black. The figure which shows the state which expressed the color component of a face photograph only in red and black in the anti-counterfeit printed matter by the same embodiment. The figure which shows the state which represented the face photograph by the red decomposition image and the black decomposition image in the anti-counterfeit printed matter by the same embodiment. In the anti-counterfeit printed matter according to the same embodiment, the red decomposed image is represented by the yellow (Y) decomposed image and the magenta (M) decomposed image, and the black decomposed image is represented by the black (K) decomposed image. The figure which shows. In the anti-counterfeit printed matter according to the same embodiment, the figure showing the decomposed image of the first CMYK image which becomes an invisible pattern and the figure which applied the stroke to the first image area about the decomposed image of the first CMYK image. In the anti-counterfeit printed matter according to the same embodiment, the figure showing the decomposed image of the second CMYK image which becomes the offset pattern and the figure which applied the stroke to the second image area about the decomposed image of the second CMYK image. It is a figure which shows the state which combined all the images applied to the 1st image area shown in FIG. 11 and the 2nd image area shown in FIG. 12 in the anti-counterfeit printed matter according to the same embodiment. The figure which shows the state which combined all the applied image lines in the anti-counterfeit printed matter by the same embodiment. In the anti-counterfeit printed matter according to the same embodiment, all the images applied to the first image area shown in FIG. 11, the second image area shown in FIG. 12, and the third image area shown in FIG. 14 are combined. The figure which shows the state which was done. The figure which shows the structure of the unit which is the smallest unit of a printed pattern in the anti-counterfeit printed matter by the same embodiment. The figure which shows the example which arranged the unit which is the smallest unit of a print pattern in a matrix. The figure which shows an example of the image which becomes the original image of an invisible pattern. The figure which showed the gradation of black and the gradation of red in 5 stages. It is a figure which shows the structure of the unit in the case of the anti-counterfeit printed matter by the same embodiment, when each gradation of black and red which is a basic color component of a face photograph is expressed in 5 steps. The figure which shows the density of CMYK when each gradation of black and red which is a basic color component of a face photograph is expressed in 3 steps in the anti-counterfeit printed matter by the same embodiment. It is a figure which shows the density assignment of CMYK for making a flat gray monochromatic color without a pattern by a complementary color in each three-step gradation of black and red shown in FIG. 21 in the anti-counterfeit printed matter according to the same embodiment. FIG. 6 is a diagram showing a state in which halftone dots are applied to the decomposed images having three levels of gradation of black and red shown in FIG. 22 in the anti-counterfeit printed matter according to the same embodiment. In the anti-counterfeit printed matter according to the same embodiment, a flat gray single color without a pattern having a density of about 20% when viewed from a distance is obtained from a decomposed image having three levels of gradation of black and red shown in FIG. 23. The figure which shows. The block diagram which shows the structure of the data creation apparatus for anti-counterfeit printed matter by embodiment of this invention. The flowchart which shows the method of creating the data for anti-counterfeit printed matter by embodiment of this invention. The figure which shows the averaging process of the pixel area with respect to the face image which becomes an invisible pattern. The figure which shows the process of converting the face image which averaged a pixel area into the first CMYK image data. The figure which shows the profile A2 applied to change the tone curve with respect to the 1st CMYK image data. The figure which shows the critical value array image applied to the 1st CMYK image data. The figure which shows that the critical value array image is applied to the 1st CMYK image data, and the CMYK image data of a 1st image is generated in the 1st image area. The figure which shows the process of generating the 2nd CMYK image data in order to generate the offset pattern for canceling an invisible pattern. The figure which shows the profile B2 applied to change the tone curve with respect to the 2nd CMYK image data. The figure which shows the mask applied to the 2nd CMYK image data. The figure which shows that the CMYK image of the 2nd image is generated in the 2nd image area by applying a mask to the 2nd CMYK image data. The figure which shows the RGB image which becomes the original image of a visible pattern. The figure which shows the process of converting a visible pattern into the 3rd CMYK image data. The figure which shows the profile C2 applied to change the tone curve with respect to the 3rd CMYK image data. The figure which shows the mask applied to the 3rd CMYK image data. The figure which shows that the CMYK image data of a 3rd image is generated in the 2nd image area by applying a mask to the 3rd CMYK image data. CMYK image data of the first image in the first image area, CMYK image data of the second image in the second image area, CMYK image data of the third image in the second image area. Is generated and multiplied, respectively, and the figure which shows the CMYK image which combined the 1st image data, the 2nd image data, and the 3rd image data.

An anti-counterfeit printed matter, a method for creating data for anti-counterfeit printed matter, and a device for creating data for anti-counterfeit printed matter according to an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and includes various embodiments included in the claims.

FIG. 1A shows an anti-counterfeit printed matter (hereinafter referred to as a printed matter) according to an embodiment of the present invention. It shows a state where the region where an image of an invisible pattern was formed in this printed matter was observed with the naked eye under normal light. At first glance, it is observed to be flat with no pattern and printed in a single gray color.

When this printed matter is copied by a normal color copier, a color invisible pattern appears as shown in FIG. 1 (b).

A case where the printed matter on which such an invisible pattern is formed is applied to a passport booklet as an example of certificates will be described. As shown in FIG. 2, in this printed matter (1), a plurality of recording pages are integrated by a binding portion between the front cover and the back cover. This recording page is used as a base material, and the owner's face image (11), a color invisible pattern forming region (2), and a visible pattern (8) are formed on a part of the base material. There is.

As will be described later, the color invisible pattern has a security function capable of authenticity discrimination by a first truth discrimination method, a second truth discrimination method, and a third truth discrimination method. The passport booklet shown in FIG. 2 is merely an example of an anti-counterfeit printed matter according to the present invention, and is not limited to application to the passport booklet, and is shown in FIG. 2 even when applied to the passport booklet. It is not limited to the arrangement of images and patterns.

The first authenticity determination method uses a color copier. FIG. 3 shows a copy (12) obtained by copying an anti-counterfeit printed matter (1) according to an embodiment of the present invention, which will be described later, by a color copier. As shown in FIG. 3, the invisible pattern (7) is visualized in the copy (12) in the color invisible pattern forming region (2) of the printed matter (1). By collating the visualized invisible pattern (7) with the owner's face image (11) and confirming the match of the person, it is possible to easily determine the authenticity.

In the second authenticity discrimination method, authenticity discrimination is performed by using a discriminator (4) such as a perennial filter or a lenticular lens in which a plurality of straight lines are formed in a perennial shape along one direction on a transparent filter. Is to do. FIG. 4 shows a state in which the discriminator (4) is superposed at a predetermined position in the anti-counterfeit printed matter (1) according to the embodiment of the present invention. As shown in FIG. 4, the invisible pattern (7) is visualized in the portion where the discriminator (4) is placed in the color invisible pattern forming region (2) on the printed matter (1). By collating the visualized invisible pattern (7) with the owner's face image (11) and confirming the match of the person, it is possible to easily determine the authenticity.

The third authenticity discrimination method is to perform authenticity discrimination using an image input / display device (also referred to as an IR viewer) equipped with a camera for infrared viewing or an optical scanner. As shown in FIG. 5, an image (5) obtained by infrared-viewing the anti-counterfeit printed matter (1) according to the embodiment of the present invention by the image input / display device is shown. The printed pattern (6) appears in the infrared-viewed image (5) in the color invisible pattern forming region (2) on the printed matter (1), and the invisible pattern (7) is visualized. By collating the visualized invisible pattern (7) with the owner's face image (11) and confirming the match of the person, it is possible to easily determine the authenticity.

FIG. 6 shows the relationship between the lightness of input and output in a normal color copier used for color copying in the present invention, that is, the relationship between the density of the original and the density of the copy. In a normal color copier, the density of the original and the density of the copy are not in a linear relationship shown by the dotted line, and as shown by the solid line, when the density of the original is lower than 50%, for example, the original. The density of the copy is lower so as not to reproduce the ground color and fine noise of the original, and the density of the copy is set higher for the sharpness processing when the density of the original is higher than 50%.

The printed matter of the present embodiment utilizes the input / output density characteristics of such a color copier to set the total density of the invisible pattern, that is, the image area ratio to 5 to 40%, preferably 20%, for example. It is set low.

Further, in the printed matter of the present embodiment, personal information is assumed as the original image of the invisible pattern, and a facial photograph is assumed as a typical example thereof, and the basic color components of the face are red and black. In the present invention, the original image of the invisible pattern is not limited to the face photograph, and the basic color components of the original image are not limited to red and black.

FIG. 7 shows a face and a color space. Generally, a color image is expressed in a color space using all of the three primary colors R (red), G (green), and B (blue) of light. However, only red and black can be used to authenticate the personal information of the face to a sufficient level.

FIG. 8 shows a state in which a face is expressed with a predetermined pixel density using only red and black.

FIG. 9 shows a red decomposed image and a black decomposed image. By synthesizing a face expressed only in red and a face expressed only in black, a face expressed in red and black can be expressed.

FIG. 10 shows a state in which the red decomposed image is represented by the yellow (Y) and magenta (M) decomposed images, and the black decomposed image is represented by the black (K). In this way, the red decomposed image and the black decomposed image can be represented by the yellow (Y), magenta (M), and black (K) decomposed images.

Since the above description uses a face image as the original image of the invisible pattern, the invisible pattern is represented by a decomposed image of magenta (M), yellow (Y), and black (K), but there are various invisible patterns. An image can be used, and can be represented by a decomposed image of cyan (C), yellow (Y), magenta (M), and black (K) according to the image.

FIG. 11A is a first CMYK image that is an invisible pattern in the printed matter of the present embodiment. Here, the face image is represented by a decomposed image of yellow (Y), magenta (M), and black (K), and the cyan (C) component is zero. FIG. 11B is a minimum unit referred to as a unit, which will be described in detail later, and the unit is composed of a first image area (A) and a second image area (B). The decomposed image of the CMYK image of FIG. 11A is arranged in the first image area (A) of the unit, and at that time, as shown in FIG. 11C, the first image area (A) of the unit (1). The first image line reproduced by the copying machine is applied to and formed in A). When applying the image, as shown in FIG. 11 (b), black (K) forms an image from the center of the first image area (A) in the unit in both outer directions, and yellow (K). Y), magenta (M), and cyan (C) may be formed from both outer sides toward the center. By forming in this way, a plurality of colors can be arranged in the same unit.

FIG. 12A is a second CMYK image that is an offset pattern in the printed matter of the present embodiment. Here, the face image is represented by a decomposed image of yellow (Y), magenta (M), and black (K), and the black (K) component is zero. 12 (b) is the unit of the smallest unit shown in FIG. 11 (b), and the decomposed image of the CMYK image of FIG. 12 (a) is arranged in the second image area (B) of the unit. At that time, as shown in FIG. 12 (c), a second image line that is not reproduced by the copying machine is applied to and formed in the second image area (B) of the unit.

Here, the images in the decomposed images of yellow (Y), magenta (M), cyan (C), and black (K) formed in the first image area (A) and the second area (B). The line area ratios are all lower than 50%, for example, set to about 20%.

13 shows yellow (Y), magenta (M), cyan (C), and black (K) applied to the first image area (A) and the second image area (B) of FIGS. 11 and 12. ) Is combined and the final image is constructed using the image lines. The printed matter (1) formed as described above is a flat gray single color with no pattern at first glance, but when color copying is performed, a color invisible image appears.

In the printed matter of the present embodiment, as the offset pattern, the negatively inverted image of the invisible pattern is color-separated into CMYK and used, but the offset pattern is not limited to this, and the visible pattern is displayed under normal visible conditions. Any image can be used as long as it can be formed so as not to be visually recognized by the naked eye.

FIG. 14A is a third CMYK image that is a visible pattern in the printed matter of the present embodiment. The visible pattern can be formed on the printed matter in addition to the invisible pattern and the offset pattern described above. Here, it is represented by a decomposed image of yellow (Y), magenta (M), cyan (C), and black (K), and the black (K) component is zero as in the offset image. 14 (b) is the unit of the smallest unit shown in FIGS. 11 (b) and 12 (b), and the decomposed image of the CMYK image of FIG. 14 (b) is the second image area (2) of the unit. B), at which time, as shown in FIG. 14 (c), a third image not reproduced by the copier is applied to a part of the second image area (B) of the unit. It is formed. Here, the area ratio of the image area in the decomposed image of yellow (Y), magenta (M), cyan (C), and black (K) formed in a part of the second image area (B) is any. Is also set to be lower than 50%, for example, about 20%.

FIG. 15 shows the yellow (Y) shown in FIGS. 11 (c), 12 (c) and 14 (c) applied to the first image area (A) and the second image area (B). , Magenta (M), Cyan (C), and Black (K) are all combined, and the final image is constructed using the image lines. In the printed matter (1) formed as described above, only a wave-like color visible pattern can be confirmed under normal visible conditions, but when the printed matter (1) is copied, the color visible pattern disappears and a color invisible image appears.

FIG. 16 shows an enlarged structure of a single stroke of the printed pattern with respect to the printed matter (1). Here, the vertical dimension (Sv) and the horizontal dimension (Sh) are in the range of 400 to 600 μm, and are 1 mm or less, for example, 423 μm. Further, the image resolution is set to, for example, 1200 dpi and 20 pixels in the vertical and horizontal directions.

The one stroke shown in FIG. 16 is the smallest unit called a unit, and sandwiches the first stroke region (A) and the first stroke region (A) arranged in the center up and down. It is provided with a second image area (B) arranged so as to be used. The first image area (A) and the second image area (B) are rectangles having the lateral direction of the unit as the longitudinal direction and the dimension (Sh) as the maximum width. The center line (L1) is related to the case where the discriminator (4) is placed on the printed matter (1), and the details will be described later.

A plurality of such units are regularly arranged in a matrix on the surface of the printed matter (1). Further, the first image area (A) and the second image area (B) are connected in a horizontal straight line between the units adjacent to each other in the lateral direction.

As described above, the first stroke area (A) corresponds to the invisible pattern region, and the second stroke region (B) corresponds to the offset pattern region for forming the offset pattern that cancels the invisible pattern. do. Due to the presence of the first image area (A) and the second image area (B), it is not visible under normal visible conditions, and the invisible pattern is visible only in the first image area (A). Offset patterns are formed only in the image area (B) of 2.

In FIG. 16, the first image area (A) is shown with a constant area ratio, but it varies depending on the configuration of the invisible pattern. Further, the second image line region (B) is variable depending on the configuration of the offset pattern and the visible pattern. The specific picture line configuration will be described later.

Further, in each unit, the first image area (A) and the second image area (B) are flat with no pattern having an area ratio of about 20% to the naked eye in the wavelength region of visible light. It is visually recognized as a single gray color.

In each unit showing the gradation of black, the first image area (A) is composed of a black (K) color material containing an infrared absorbing dye (for example, carbon), and the second image area (A) is formed. (B) is composed of a coloring material containing no infrared absorbing dye, for example, an ink mixed by a subtractive color mixing of cyan (C), magenta (M) and yellow (Y).

The printed pattern formed in the formed region (2) of the printed matter (1) shown in FIG. 2 has the units shown in FIG. 16 vertically and horizontally in a matrix having the number of vertical steps (Sv) and the number of horizontal steps (Sh). It is formed by being arranged continuously and regularly without any gaps. The number of steps in the present embodiment refers to the number of units repeated on the printed pattern. Here, there is no limit to the number of steps, and the number of steps is proportional to the image resolution of the visible pattern and the invisible pattern. Further, by arranging the first image area (A) and the second image area (B) in the horizontal direction, a parallel universal line composed of the first image area (A) group and a second image area (A) are arranged. A parallel universal line consisting of the image area (B) group is formed. In this way, an invisible pattern is formed by line phase modulation.

In the above description, it has been described that the units are continuously and regularly arranged in a matrix without vertical and horizontal gaps, but the arrangement is shown in FIG. 17 (a) and also in FIG. 17 (b). As shown in FIG. 17 (c), square units may be arranged in a block shape in the first direction (S1). Further, the units may be arranged in the vertical direction as shown in FIG. 17 (d), or may be arranged in the vertical direction and in a block shape as shown in FIG. 17 (e). Further, in FIGS. 17 (a) to 17 (e), the second image area (B) is arranged so as to sandwich the first image area (A) up and down, but the unit of the present invention is a unit of the present invention. , As shown in FIGS. 17 (f) and 17 (g), it is also effective to arrange the first image area (A) and the second image area (B) alternately in the horizontal direction or the vertical direction. Have.

Further, the area ratio of the first image area (A) and the second image area (B) constituting the unit is the area of the first image area (A): the second image area (B). ) Is preferably configured to have an area of about 1: 3 to 1: 5, but a configuration with an area ratio of 1: 4 is most preferable.

FIG. 18 shows an image (9) which is an original image of the invisible pattern (7) in the printed matter (1). The image (9) is, for example, an 8-bit color scale image having photographic gradation.

In FIG. 19, the five-step gradation of black, which is the basic color component in the facial photograph, is shown in the upper five units, and the five-step gradation of red is shown in the lower five units.

In FIG. 20, in each of the five units in the upper row, five levels of black gradation are shown in the image area of the invisible pattern arranged in the center, and the offsets for canceling the image areas of the invisible pattern above and below the gradation are shown. The image area of the pattern is arranged, and the complementary color or the opposite color of the color of the image area of the invisible pattern is shown in the image area of the offset pattern in five grades. For example, when one is black, the other is white.

Further, in each of the five units in the lower part of FIG. 20, five levels of red gradation are shown in the image area of the invisible pattern arranged in the center, and the offset pattern image for canceling the invisible pattern above and below the gradation is shown. A line region is arranged, and the complementary color or the opposite color of the color of the invisible pattern image region is shown in the offset pattern image region with five gradations.

And in each unit, the image area ratio is set to be about 20% as a whole.

By arranging the image area of the invisible pattern and the image area of the offset pattern, it is not visible to the naked eye as a whole under normal visible light. When color copying is performed, the image area of the offset pattern occupies a larger area in the unit than the image area of the invisible pattern, and the average value of the image area ratio of the offset pattern is the average of the image area ratio of the invisible pattern. Since it is relatively lower than the value, it is not output, only the black invisible pattern and the red invisible pattern are output, and the invisible pattern appears.

In FIG. 21, when three units arranged in the upper row and showing a more simplified three-step black gradation and three units arranged in the lower row and showing a red gradation are arranged. , Cyan (C), magenta (M), yellow (Y), black (K) data are shown.

In all of the upper three units, three levels of black gradation are shown, and the black (K) data is 0, 50, and 100 in order from left to right. In this case, the data of cyan (C), magenta (M), and yellow (Y) are all 0.

In each of the three units in the lower row, three levels of red gradation are shown, and the magenta (M) and yellow (Y) data become 0, 50, and 100 data in order from left to right. There is. The data of cyan (C) and black (K) in this case are both 0.

In FIG. 22, three units arranged in the upper row and showing three levels of black gradation and three units arranged in the lower row showing red gradation are arranged, and an invisible pattern is further arranged in the center of each unit. The data of cyan (C), magenta (M), yellow (Y), and black (K) when the image area of No. 1 is arranged and the image area of the offset pattern is arranged above and below it are shown.

In each of the three units in the upper row, three levels of black gradation are shown in the invisible pattern image area arranged in the center, and the black (K) data is 0, 50, in order from left to right. It is 100. The data of cyan (C), magenta (M), and yellow (Y) are all 0. Complementary colors or opposite colors of colors in the invisible pattern image area are formed of cyan (C), magenta (M), and yellow (Y) in the offset pattern image area arranged above and below the image area. Specifically, the data of cyan (C), magenta (M), and yellow (Y) are 25, 13, and 0 in order from left to right, and the data of black (K) are all 0. ..

In each of the three units in the lower row, three levels of red gradation are shown in the invisible pattern image area arranged in the center, and the cyan (C) and black (K) data are all 0. , Magenta (M), Yellow (Y) data are 0, 50, 100. Complementary colors or opposite colors of colors in the invisible pattern image area are formed of cyan (C), magenta (M), and yellow (Y) in the offset pattern image area arranged above and below the image area. Specifically, cyan (C) is all 25, black (K) is all 0, and magenta (M) and yellow (Y) data are 25, 13, and 0 in order from left to right.

Here, the above-mentioned complementary colors or opposite colors will be described. Colors include chromatic colors with colors such as red, blue, and yellow, and achromatic colors with no color such as white, black, and gray located on the gradation. In the present invention, chromatic colors and achromatic colors are used. Both are used. In chromatic colors, complementary colors are a combination of colors that are oppositely located on the color wheel, for example, the complementary color of red is green and the complementary color of blue is orange. On the other hand, achromatic colors have no hue and saturation and only differ in lightness, so there is no concept of complementary colors, but the opposite color of white can be expressed as black, and the opposite color of black can be expressed as white. These are applied to the present invention. For example, in the case of achromatic color, when the image area of the invisible pattern arranged in the center of the unit is "black" as shown on the upper right side of FIG. 22, the unit In the second stroke area (B) of the offset pattern arranged above and below, cyan (C), magenta (M), yellow (Y), and black (K) are used as "white", which is the opposite color of black. Are all represented by 0. Similarly, as shown on the upper left side of FIG. 22, when the image area of the invisible pattern is "white", the opposite of white to the second image area (B) of the offset pattern arranged above and below the unit. The color "black" is arranged, but at this time, cyan (C), magenta (M), and yellow (Y) are each formed by 25 without using black (K).

The reason why cyan (C), magenta (M), and yellow (Y) are formed in the second image area (B) of the offset pattern instead of black (K) will be described above. The cyan (C), magenta (M), and yellow (Y) inks do not contain infrared absorbing dyes, but the black (K) inks contain infrared absorbing dyes, so when the printed matter (1) is viewed as infrared rays. An image printed with black (K) ink appears on the surface. In the printed matter (1) of the present invention, the second image area (B) is where the black (K) ink formed in the first image area (A) appears as an invisible image when viewed by infrared rays. This is because when black (K) ink is formed on the surface, the invisible image that appears becomes unclear. Similarly, as an example of chromatic colors, as shown on the lower right side of FIG. 22, when the image area of the invisible pattern is "red" composed of 100 magenta (M) and 100 yellow (Y), It is formed only of cyan (C) 25 as a complementary color in the image area of the offset pattern arranged above and below the unit.

Next, in the upper and lower three units shown in FIG. 22, cyan (C), magenta (M), yellow (Y), and black (K) are solidly painted in the invisible pattern image area to offset them. FIG. 23 shows a state in which halftone dots are arranged in the image area of the pattern. Regarding the image line arrangement, the invisible pattern was arranged with solid lines and the offset pattern was arranged with halftone dots. However, when copying the printed matter (1), the invisible pattern is reproduced and the image lines are arranged so that the offset pattern is not reproduced. If it is arranged, it is not limited to the above configuration.

When the entire image area composed of the units shown in FIG. 23 is visually recognized, the black (K) image area ratio is visually recognized at about 20% as shown in FIG. 24.

The colors constituting the printed matter (1) of the present invention are not limited to cyan (C), magenta (M), yellow (Y), and black (K), and may be other colors. .. However, a configuration using cyan (C), magenta (M), yellow (Y), and black (K) is preferable because the range of colors that can be expressed by synthesizing each color is wide.

(Data creation device for anti-counterfeit printed matter)
An apparatus for creating data for anti-counterfeit printed matter according to an embodiment of the present invention will be described. The present embodiment relates to a device for creating data for printed matter for forming an image having continuous gradation such as a photograph as invisible information having continuous gradation. FIG. 25 shows the configuration of the data creation device for anti-counterfeit printed matter according to the present embodiment. This creating apparatus includes an input means (M1), a generation means (M2), an output means (M3), a display means (M4), an IC memory (M5), and a database (M6).

The input means (M1) has at least an invisible pattern input means (M1a) and, if necessary, a visible pattern input means (M1b). The invisible pattern input means (M1a) can input the invisible pattern (7) from any image including the face image (11) pre-recorded in the IC memory (M5) or the database (M6). Similarly, the visible pattern input means (M1b) can input the visible pattern (8) from any image recorded in advance in the IC memory (M5) or the database (M6).

The generation means (M2) has at least an invisible pattern generation means (M2a), an offset pattern generation means (M2b), and an image composition means (M2d), and further includes a visible pattern generation means (M2c) as needed. Have. The first image data is generated by the invisible pattern generation means (M2a) using an arbitrary image including the face image (11) input by the invisible pattern input means (M1a), and the offset pattern generation means (M2b) produces the first image data. The image data of 2 is generated. Further, using an arbitrary image input by the visible pattern input means (M1b), the visible pattern generation means (M2c) generates a third image data as needed. The first image data and the second image data are combined by the image composition means (M2d), or the first image data, the second image data, and the third image data are combined when a visible pattern is required. Will be done.

The output means (M3) is a printing device capable of printing an image output from a computer such as a color laser printer or a color inkjet printer, and is not particularly limited. The display means (M4) displays an image of a printed matter, and is not particularly limited to a monitor of a personal computer, a dedicated monitor, or the like. Further, the IC memory (M5) may be included in the IC memory (M5) provided in the printed matter (1) shown in FIG. 1, but is not limited thereto. Further, the IC memory (M5) is not limited in form and method, such as a non-contact type provided with a communication antenna or a contact type provided with a connection terminal.

(How to create data for anti-counterfeit printed matter)
A method of creating data for printed matter using the above-mentioned creating apparatus will be described in detail with reference to FIG. 26. This creation method includes at least an invisible pattern generation flow and an offset pattern generation flow, and further includes a visible pattern generation flow as needed.

(Invisible pattern generation flow)
The invisible pattern generation flow will be described. In step S1, the invisible pattern (7) is set. Specifically, an image such as a face image that is the original image of the invisible pattern (7) is input from the IC memory (M5) or the database (M6). For example, the image input from the IC memory (M5) is set as a 24-bit RGB image.

In step S2, the image resolution is optimized. In the present embodiment, the resolution is 600 dpi, the image size is 35 mm in width and 45 mm in length, and the number of pixels is 827 pix in width and 1066 pix in length.

For the RGB image data whose image resolution is optimized in step S2, the RGB pixel region is averaged in step S3. This process corresponds to so-called mosaic process. In the present embodiment, since the number of pixels of the critical value array image (A1) and the mask (C1) described later is a rectangle of 20 pix × 10 pix, the color scale shown in FIG. 27 is used for regional averaging of the gradation level. It is processed so that the vertical dimension (Sv) and the horizontal dimension (Sh) become a rectangular mosaic of 20 × 10 pixels as in the image. It should be noted that this step S3 does not necessarily have to be performed, and the 8-bit color scale image data generated in step S2 can be used as it is for the image data used in steps S4 and subsequent steps described below.

As shown in FIG. 28, the RGB image data in which the RGB pixel region is averaged in step S3 is converted into the first CMYK image data in step S4. For conversion, GCR decomposition, which is a known conversion method, is used, and the black (K) component is set to have the maximum output. In this embodiment, the cyan (C) component is zero because the face image is reproduced in the black and red color spaces. By limiting the color space used in this way, the processing can be speeded up.

Profile A2 is applied to the first CMYK image data in step S5 to change the tone curve. This profile A2 is a parameter for controlling the continuous gradation of the first image line formed in the first image line region (A) of the invisible pattern and the color balance of CMYK. In the present embodiment, as shown in FIG. 29, when the input image area ratio is 0%, the output image area ratio is 0%, and when the input image area ratio is 100%, the output is performed. It is a tone curve having a linear and linear continuous gradation in the relationship between input and output, such that the area ratio of the image area is 100%. However, this tone curve is an example, and the setting can be changed as needed.

In step S6, the critical value array image (A1) is applied. The critical value array image is a known technique and is a control pattern image for obtaining the final shape of the printed image. In the present embodiment, the first image area (A) of the invisible pattern is used. ) Is for generating the first image line. No stroke is generated in the second stroke region (B) of the offset pattern.

As shown in FIG. 30, a critical value array image (A1) having a resolution of 600 dpi, a vertical dimension (Sv), and a horizontal dimension (Sh) of 10 × 20 pix, for example, extends horizontally in the center of the unit. A first image area (A) and a second image area (B) above and below the first image area (A) are provided. The center of the first image area (A) matches the pitch of the lenticular lens of the discriminator (4) with a line number of 60 Lines / inch. However, in the above, the pitch of the lenticular lens is set to 60 Line / inch, but the pitch is not limited to this, and the pitch can be manufactured at any pitch such as 75 Line / inch.

By applying the critical value array image (A1) in step S6, as shown in FIG. 31, the CMYK image data of the first image is applied to the first image area (A) of the invisible pattern as step S7. Is generated. In the first image area (A), only a black (K) image is generated in the central portion, and cyan (C), magenta (M), and yellow (Y) image data are generated at both ends in the lateral direction thereof. Is generated.

(Offset pattern generation flow)
The offset pattern generation flow will be described.

In step S11, the RGB image data in which the RGB pixel region is averaged in step S3 of the invisible pattern generation flow is converted into the second CMYK image data as shown in FIG. 32. At the time of conversion, a known GCR decomposition is used as in the first CMYK image data, and the black (K) component is set to the minimum output (zero output). As a result, a negative image with low contrast at first glance is generated. In step S11 of the offset pattern generation flow in FIG. 26, a method of generating a second CMYK image data of the offset pattern from the RGB image data obtained in step S3 of the invisible pattern is shown. The second CMYK image data does not necessarily have to be created using the RGB image data generated as an invisible pattern, and the second CMYK image data can be created from another pattern as well as the first CMYK image data. be.

Profile B2 is applied to the second CMYK image data in step S12 to change the tone curve. This profile B2 is a parameter for controlling the continuous gradation of the second image line formed in the second image line region (B) of the offset pattern and the color balance of CMYK. In the present embodiment, as shown in FIG. 33, black (K) has an image area ratio of 0% for both input and output, and is an input image of cyan (C), magenta (M), and yellow (Y). When the line area ratio is 20%, the output image area ratio is 0%, and the input / output relationship is a tone curve having a negative slope and linear continuous gradation. However, the tone curve is not limited to that shown in FIG. 33, and the setting can be arbitrarily changed as needed.

In step S13, the mask (B1) shown in FIG. 34 is applied. This mask (B1) has the same size as the critical value array image (A1), and in the present embodiment, for example, the resolution is 600 dpi, the vertical dimension (Sv), the horizontal dimension (Sh) is 10 × 20 fix, and the offset pattern is This is for generating the second image data of the second CMYK image only in the image area (B) of 2. No stroke is generated in the first stroke region (A) of the invisible pattern.

By applying the mask (B1) in step S13, as shown in FIG. 35, CMYK image data of the second image is generated in the second image area (B) of the offset pattern as step S14. To. Cyan (C), magenta (M), yellow (Y), and black (K) image data are generated in the second image area (B).

(Visible pattern generation flow)
The flow of generating visible patterns will be described. In parallel with S1 for setting the invisible pattern (7), the visible pattern (8) is set in step S21 as necessary. Specifically, an image as shown in FIG. 36, which is the original image of the visible pattern (8), is input from the IC memory (M5) or the database (M6). For example, the image input from the IC memory (M5) is set as a 24-bit RGB image. The image format is not limited.

In step S22, the image resolution is optimized. Normally, the image resolution is set to the same as that of the invisible pattern. In the present embodiment, the resolution is 600 dpi, the image size is 35 mm in width and 45 mm in height, and the number of pixels is 827 pix in width and 1066 pix in length. However, the image resolution of the visible pattern may be set to a value different from the image resolution of the invisible pattern.

As shown in FIG. 37, the RGB image data whose image resolution is optimized in step S22 is converted into a third CMYK image data in step S23. At the time of conversion, a known GCR decomposition is used as in the case of the first and second CMYK image data, and the black (K) component is set to the minimum output (output zero). As a result, a negative image with low contrast at first glance is generated.

Profile C2 is applied to the third CMYK image data in step S24 to change the tone curve. This profile C2 is a parameter for controlling the continuous gradation of the third image line formed in the second image line region (B) and the color balance of CMYK. In the present embodiment, as shown in FIG. 38, black (K) has an image area ratio of 0% for both input and output, and is an input image of cyan (C), magenta (M), and yellow (Y). The output image area ratio is 0% when the line area ratio is 0%, and the output image area ratio is 100% when the input image area ratio of cyan (C), magenta (M), and yellow (Y) is 100%. The input / output relationship is linear, such that the area ratio is 10%, and the tone curve has a linear continuous gradation. However, the setting can be changed to any input / output relationship as needed.

In step S25, the mask (C1) shown in FIG. 39 is applied. This mask (C1) has the same size as the critical value array image (A1) like the mask (B1) used in the offset pattern generation flow, and in the present embodiment, for example, the resolution is 600 dpi and the vertical dimension (Sv). , The horizontal dimension (Sh) is 10 × 20 pix. Then, the third image of the third CMYK image data is generated only in the second image area (B). No stroke is generated in the first stroke region (A) of the invisible pattern.

By applying the mask (C1) in step S25, as shown in FIG. 40, the CMYK image data of the third image is generated in the partial area of the second image area (B) as step S26. It is generated, and no image is generated in the first image area (A). As shown in FIG. 40, in the present embodiment, the CMYK image data of the third image line is generated in the right half area of the second image line area (B), but the present invention is limited to this. If it is generated in a partial area of the second image area (B), it may be in the center or the left half of the second image area (B). It may be an area.

In step S31, the first image data of the invisible pattern is combined in the first image area (A) by multiplying the first image data, the second CMYK image data, and the third CMYK image data. Data, second image data of the offset pattern in the second image area (B), and third image data of the visible pattern in a partial area of the second image area (B) as needed. Is generated and generated as CMYK image data shown in FIG. 41.

In the printed matter produced in this way, a visible pattern is normally visible under light. Then, when color copying is performed by a color copier, an invisible pattern is visually recognized instead of the visible pattern. The invisible pattern is visually recognized even when visually recognized using a discriminator or when viewed by infrared rays.

(Printing by printing device)
The composite image data of the CMYK image generated by the processing flow shown in FIG. 26 can be printed by various printing devices. The print settings are adjusted in a timely manner by various printing devices, and are not limited.

Although embodiments of the present invention have been described, this embodiment is presented as an example and is not intended to limit the technical scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This embodiment and its modifications are included in the technical scope and gist of the invention, as well as the invention described in the claims and the equivalent scope thereof.

1 Printed matter 2 Formed area 3 Printed pattern 4 Discriminator 5 Infrared-viewed image 6 Infrared-viewed printed pattern 7 Invisible pattern 8 Visible pattern 9 Image 11 Face image 12 Copy A First image area B Second image area A1 Critical value array image B1, C1 Mask A2, B2, C2 Profile M1 Input means M1a Invisible pattern input means M1b Visible pattern input means M2 Generation means M2a Invisible pattern generation means M2b Offset pattern generation means M2c Visible pattern generation means M2d Image synthesis means M3 Output means M4 Display means M5 IC memory M6 Database L1 Center line Vertical dimension of Sv unit Horizontal dimension of Sh unit

Claims (13)

At least a part of the substrate is provided with a plurality of units arranged in a matrix at a predetermined pitch.
Each said unit is formed on the same line along the first direction and has a first drawing area and a second drawing area.
The invisible pattern is formed by the first image reproduced by the copy formed in the first image area, and the second image is not reproduced by the copy formed in the second image area. An offset pattern against the invisible pattern is formed,
The first image area and the second image area are complementary colors or opposite colors, and at least one of the first image areas constituting the first image area in the plurality of units. The part has a chromatic color,
An anti-counterfeit printed matter characterized in that the total image area ratio of the first image line and the second image line in each of the units is the same between the units. The anti-counterfeit printed matter according to claim 1, wherein the second image area is divided and arranged in two places so as to sandwich the first image area. The anti-counterfeit printed matter according to claim 1 or 2, wherein in each of the units, the first image area has a smaller area than the second image area. The invention according to any one of claims 1 to 3, wherein the total image area ratio of the first image and the second image in each unit is 5 to 40%. The anti-counterfeit printed matter described. The anti-counterfeit printed matter according to any one of claims 1 to 4, wherein a third image line forming a visible pattern is further formed in a part of the second image area. .. The color material forming the first image line contains an infrared-absorbing dye, and the color material contains an infrared-absorbing dye.
The anti-counterfeit printed matter according to any one of claims 1 to 5, wherein the color material forming the second image line does not contain an infrared absorbing dye. The invisible pattern has gradation because it is formed by changing the image area ratio of the first image line for each unit.
The offsetting pattern according to any one of claims 1 to 6, wherein the offset pattern has a gradation due to the fact that the image area ratio of the second image is changed for each unit. Anti-counterfeit printed matter. A method for creating data used in the anti-counterfeit printed matter according to claims 1 to 7.
A step of inputting invisible pattern image data for creating the invisible pattern by using an invisible pattern input means for inputting invisible pattern image data for creating the invisible pattern, and a step of inputting the invisible pattern image data for creating the invisible pattern.
A step of converting the invisible pattern image data into the first CMYK image data by the invisible pattern generation means for generating the invisible pattern using the input invisible pattern image data.
First image data that applies a critical value array image to the first CMYK image data using the invisible pattern generation means to form the invisible pattern in the first image region of each unit. And the steps to generate
A step of generating the offset pattern image data as a second CMYK image data by using the offset pattern generation means for generating the offset pattern for the invisible pattern, and
Using the offset pattern generation means, a mask is applied to the first CMYK image data to generate second image data that forms the offset pattern in the second image region of each unit. Steps and
A step of generating a composite image in which the first image line data of the invisible pattern and the second image line data of the offset pattern are combined in each of the units by using an image composition means for synthesizing images. And, with
The first image data and the second image so that the area ratio of the image obtained by totaling the first image data and the second image data in each unit is the same between the units. A method of creating data used for anti-counterfeit printed matter, which is characterized in that the area rule data is formed.
A step of applying a first profile to the first CMYK image data using the invisible pattern generating means to adjust gradation and color balance, and a step of adjusting the gradation and color balance.
A step of applying a second profile to the second CMYK image data using the offset pattern generation means to adjust gradation and color balance, and a step of adjusting the gradation and color balance.
The method for creating data used for the anti-counterfeit printed matter according to claim 8, further comprising.
It is used for anti-counterfeit printed matter in which a third image line forming a visible pattern is further formed in a part of the second image line area .
A step of inputting the visible pattern image data for creating the visible pattern by using the visible pattern input means for inputting the visible pattern image data for creating the visible pattern, and a step of inputting the visible pattern image data.
A step of converting the visible pattern image data into a third CMYK image data by a visible pattern generating means for generating the visible pattern using the input visible pattern image data.
A step of applying a third profile to the third CMYK image data using the visible pattern generation means to change the gradation and color balance, and
A third image data that applies a mask to the third CMYK image data using the visible pattern generation means to form the visible pattern in a part of the second image area of each unit. And the steps to generate
Using the image synthesizing means, the first image data of the invisible pattern, the second image data of the offset pattern, and the third image data of the visible pattern are supplied to each of the units. And the step to generate the composite image data
The method for creating data used in the anti-counterfeit printed matter according to any one of claims 8 and 9, further comprising.
A data creation device used for the anti-counterfeit printed matter according to claims 1 to 7.
An invisible pattern input means for inputting invisible pattern image data for creating the invisible pattern, and an invisible pattern input means.
An invisible pattern generating means for generating the invisible pattern using the input invisible pattern image data,
An offset pattern generating means for generating the offset pattern with respect to the invisible pattern,
Image compositing means for compositing images and
Equipped with
The invisible pattern generating means is
The invisible pattern image data is converted into the first CMYK image data, and the invisible pattern image data is converted into the first CMYK image data.
A critical value array image is applied to the first CMYK image data to generate first image data that forms the invisible pattern in the first image region of each unit.
The offset pattern generation means is
The offset pattern is generated as the second CMYK image data, and the offset pattern is generated.
A mask is applied to the first CMYK image data to generate second image data that forms the offset pattern in the second image area of each unit.
The image synthesizing means generates composite image data in which the first image data of the invisible pattern and the second image data of the offset pattern are combined in each of the units.
In the invisible pattern generation means and the offset pattern generation means, the image area ratio of the sum of the first image line data and the second image line data in each of the units is the same between the units. In addition, a data creation device used for an anti-counterfeit printed matter, characterized in that the first image line data and the second image line data are formed.
The invisible pattern generation means applies the first profile to the first CMYK image data to adjust the gradation and color balance, and the offset pattern generation means second to the second CMYK image data. The data creation apparatus used for anti-counterfeit printed matter according to claim 11, further comprising applying a profile and adjusting gradation and color balance.
It is used for anti-counterfeit printed matter in which a third image line forming a visible pattern is further formed in a part of the second image line area .
A visible pattern input means for inputting visible pattern image data for creating the visible pattern, and a visible pattern input means.
A visible pattern generation means for generating the visible pattern using the input visible pattern image data,
Further prepare
The visible pattern generation means converts the visible pattern image data into a third CMYK image data, applies a third profile to the third CMYK image data, changes the gradation and the color balance, and changes the gradation and the color balance. A mask is applied to the CMYK image data of 3 to generate a third image data that forms the visible pattern in a part of the second image area of each of the units.
The image synthesizing means synthesizes the first image data of the invisible pattern, the second image data of the offset pattern, and the third image data of the visible pattern in each of the units. The data creating apparatus used for the anti-counterfeit printed matter according to any one of claims 11 and 12, further comprising generating the combined image data.

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