JP2012016836A - Printed matter for preventing forgery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed matter for preventing forgery which can form an invisible image capable of clear exhibition and prevents a visible image from hindering visibility when exhibiting the invisible image.SOLUTION: The printed matter for preventing forgery is configured such that a first image line and a second image line which are in relation of on and off are formed along the first direction and a third image line is formed on a position where the first image line and the second image line are not present, the negative image or the positive image of the first invisible image is formed by the first image line, the positive image or the negative image of the first invisible image is formed by the second image line, and a visible image is formed by the third image line.

Description

  The present invention relates to a printed matter that requires prevention of counterfeiting or copying of securities such as banknotes, stock certificates, bonds, various certificates, and important documents.

  In general, various technologies have been applied to valuable printed matter of certificates in order to provide an effect of preventing forgery. However, in recent years, forgery of certificates has been accompanied by the improvement in image quality of color copiers and computerization of color platemaking technology. Technology tends to diversify. Along with this, we have responded by improving the anti-counterfeiting measures for certificates. However, on the other hand, if the manufacturing cost to spend on anti-counterfeiting measures is high, and it is expensive in authenticity judgment, such as introducing dedicated equipment consisting of special machinery and equipment, in order to obtain an environment for confirming the anti-counterfeiting effect was there.

  As a useful method for enabling authenticity determination at low cost, there is a technique for performing authenticity determination by overlaying a discriminator on a printed material. In other words, an invisible image is expressed as a visible image by overlaying a discriminating tool on a printed material on which an invisible image is applied. The main form of the discriminating tool is a transparent sheet printed with a parallel line screen (hereinafter referred to as “ten thousand”). Line filters ”), lenticular lenses, and the like. There are mainly two types of techniques for expressing an invisible image using this discriminator, and there are point phase modulation and line phase modulation.

  A printed material on which a latent image appears by superimposing such discriminating tools composed of line filters, and its true / false discrimination method include a background image portion printed with a line (or halftone) line, and a background image. There is a printed matter having a latent image portion printed with a line (or halftone dot) line having a phase different from that of the portion. The background image portion and the latent image portion of the printed matter are difficult to see at a glance, but when the line filter is superimposed on the printed matter at a predetermined position, the background image portion and the latent image portion are visible. A method is known in which a part can be divided and visually recognized.

  As an example of dot phase modulation (Dot phase modulation), a printed material on which a pattern phase-modulated in a first direction and a second direction is formed, a first direction of the printed material, and a line of a line filter The first multi-tone image formed by superimposing the line filters so as to match the direction of the line pattern and the angle at which the line filters are overlapped coincide with the second direction of the printed matter. In other words, there is a printed matter on which a second multi-tone image is formed and an image forming method (see, for example, Patent Document 1).

  In addition, as an example of dot phase modulation, each dot constituting a dot pattern in which an image appears by overlapping a lens array (fly eye lens, honeycomb lens, lenticular lens, etc.) on a base material. However, in a printed matter composed of at least two types of screen lines and at least two types of screen angle halftone dots, the dot area ratio of each dot constituting the dot pattern is the same if it is genuine. Therefore, an invisible image appears by overlapping the lens array, and in the case of a copy, the dots that are reproduced with the size of screen lines or the dot angle are crushed by copying and the dot density changes. There is a printed matter in which an image different from an invisible image appears (see, for example, Patent Document 2).

  As an example of overseas dot phase modulation, there is an isogram from Astron Design (Netherlands) (for example, see page 1340 of Non-Patent Document). As shown in FIG. 28A, this is a fine halftone dot as shown in FIG. 28B when enlarged in a flat pattern having a uniform density at first glance. When an invisible image is applied according to the phase of the image, and a dedicated sheet is overlaid on the printed material, the image is formed into a negative-positive image as shown in FIG. 28 (c) or FIG. 28 (d). However, since this is a flat pattern having a uniform density, an image cannot be clearly displayed.

  In addition, the applicant of the present application has filed a patent application relating to a printed matter using dot phase modulation. This is a latent image printed matter in which a plurality of pixels of the same color are regularly arranged on a substrate to form two latent image patterns, and the phases of the plurality of pixels are shifted in the first direction. It has a first latent image pattern (invisible image) by the arranged first region and a second latent image pattern (invisible image) by the second region printed by the functional ink. (For example, refer to Patent Document 3).

  As an example of line phase modulation, the line phase is shifted by 1/2 pitch with respect to the line pattern having the line part and the non-line part on the base material and having the same pitch and width. A plurality of types of latent image line patterns provided with the formed latent image portions are printed matter having latent images that are printed by being overlapped at different angles, and the plurality of types of latent image line patterns are respectively colored. There is a printed matter characterized by a difference, and a latent image portion is made visible by superimposing a plurality of invisible images on a film having the same pitch as the line pattern of the printed matter (for example, Patent Document 4). reference).

  Moreover, HIT (Hidden Image Technology) of Yura (Hungary) is a printed material using overseas line phase modulation (see page 1341). As shown in FIG. 29 (a), when the image is enlarged in a flat pattern having a uniform density at first glance, an invisible image is formed due to the phase of fine lines as shown in FIG. 29 (b). When a dedicated sheet is overlaid on the printed material, a visible image is formed in either a negative or positive shape as shown in FIG. 29 (c) or FIG. 29 (d). In addition, in the printed matter of FIG. 29 (a), an invisible image may be confirmed even with normal viewing. Therefore, as shown in FIG. 29 (b), a part of the line width of the line is set as a camouflage pattern. A visible image is provided by changing. Moreover, you may provide a visible image with a white drawing line. However, this camouflage pattern has a problem that when the invisible image is made visible by overlapping a dedicated sheet, the camouflage pattern also appears as a visible image at the same time. .

  In general, a pattern formed by dot phase modulation or line phase modulation has a flat shape.

  In addition, on the image forming sheet, the minimum unit blocks b1, b2, b3, b4,..., Which are equally divided into m columns and n rows in the unit block, are respectively set to 1 unit pixel g1, g2, g3, g4. Are formed as latent image images G1, G2, G3, G4,..., And unit pixels g1, g2, g3, g4,. A line pattern composed of lines, each line pitch p of pitches p1, p2, p3, p4,... And each line angle of angles θ1, θ2, θ3, θ4,. An anti-counterfeit image forming body composed of any one of the different line patterns composed of lines of θ, each unit pixel g1, g2, g3, g4,.・ The line pattern constituting the line, the line pitch p and the line angle θ of the same line The latent image images G1, G2, G3, G4,... Are visualized by superimposing the different line patterns composed of the line patterns for visualization formed on the transparent sheet. An anti-counterfeit image forming body has been proposed (see, for example, Patent Document 5).

  The anti-counterfeit image forming body according to Patent Document 5 visualizes a plurality of latent image images by changing the pitch and angle of the line pattern in each unit pixel. In addition, a transparent sheet that can only be expressed as a uniform background pattern, and further requires a pitch and an angle that match the line pattern of unit pixels constituting the latent image, in order to visualize the latent image. There was a problem that a plurality of discriminating tools had to be prepared.

  In addition, the inventors of the present application have a plurality of first image line elements having two image lines having a negative-positive relationship arranged so as to face each other with the center as a boundary at regular intervals along a certain direction. A plurality of first invisible image elements arranged and second invisible image elements arranged in the same configuration are alternately arranged, and a visible image is overlapped with a part of each image line. The visual line that constitutes the first invisible image or the negative image is formed by the first visual line element when the discriminator is overlapped, and only the visible image can be confirmed visually. There has already been filed an anti-counterfeit printed matter in which a negative image or positive image of the second invisible image is formed by the line element (see, for example, Patent Document 6).

  Although the printed material for forgery prevention according to Patent Document 6 has an excellent effect that a visible image can be provided in normal observation and has a rich design, an invisible image becomes a visible image by overlaying discriminators. When appearing, the visible image and the latent image pattern are slightly mixed and visually recognized, so that a problem remains in the switchability of the image.

Japanese Patent No. 4132122 Japanese Patent No. 4013450 JP 2008-207335 A JP 2004-174997 A JP 2007-015120 A Japanese Patent Application No. 2007-295146

Optical Security and Counterfeit Deterrence Techniques IV Vol.4677 (by SPIE-The International Society for Optical Engineering)

  In the techniques of Patent Documents 1 to 5 and Non-Patent Document described above, since the latent image pattern is composed of printed image lines having a flat density, an invisible image that can be clearly expressed cannot be formed.

  In addition, even if some visible image is provided, it consists of a simple white line as in the forgery-preventing printed matter described in Patent Document 2, so that the visibility when an invisible image is expressed is hindered. was there. Further, there are some that require a plurality of discriminating tools such as the printed matter described in Patent Document 5. Furthermore, even if some visible image is provided, since the visible image and the latent image pattern are slightly mixed and visually recognized as in the forgery prevention printed matter described in Patent Document 6, the image switch is insufficient. There remains a problem in the visibility of images.

  In the forgery-preventing printed matter of the present invention, a plurality of units having a predetermined area are arranged on a base material, and the aforementioned unit has at least two sets of latent image regions and visible image regions alternately along the first direction. One of at least two sets of latent image areas of each unit has a first image line area and a fourth image line area, and the other latent image area includes a second image line area and a second image line area. The visible image area has a third image area arranged from one end to the other end in the longitudinal direction of the unit, and a latent image area in each unit. Is a unit in which the first image area and the second image area are turned on and off, and when one of the image lines is formed, the other image line is not formed. Or as a unit that does not form both the first image line and the second image line The first image line and the second image line have the same area, and either the positive image or the negative image of the first invisible image is formed by the first image line, and the second image line is formed. To form the other of the negative image or the positive image of the first invisible image, and between the adjacent two or three units along the first direction up to the first image line or the second image line adjacent to each other. When the distance between the first image area and the second image line is adjacent to the first image area between the first image line and the second image line, A fourth image line having the same color as that of the first image line and the second image line is formed in the fourth image line region adjacent to the second image line region; A forgery-preventing printed matter in which a visible image is formed by forming a third image line in the image line area 3 That.

  Further, the forgery prevention printed matter of the present invention is such that the first image line, the second image line, the third image line, and the fourth image line are printed with an ink containing a glittering material, A forgery-preventing printed matter in which a desired pattern is formed by solid printing using a colorless transparent material on at least part of the second, third, and fourth image lines. It is characterized by.

  Further, the anti-counterfeit printed matter of the present invention has a plurality of units having a predetermined area arranged on the base material, and the aforementioned unit has at least a latent image region and a visible image region alternately along the first direction. Four sets are arranged, and at least four sets of latent image areas in each unit include a first latent image area formed of at least two sets of latent image areas forming a first invisible image, and a second invisible image area. A second latent image region formed of at least two sets of latent image regions forming an image, wherein one of the first latent image regions in at least two sets of latent image regions includes a first image line region and The other has a fourth image area, the other has a second image area and a fourth image area, and one of at least two sets of latent image areas of the second latent image area is a fifth image area. And the seventh line area, and the other has a sixth line area and a seventh line area. The visible image area has a third image line area arranged from one end to the other end in the longitudinal direction of the unit, and the first latent image area in each unit is the first image area. When the image area and the second image area are turned on / off, when either image line is formed, the other image line is not formed, or the first image area is formed. Formed as a unit that does not form both the line and the second image line, and the second latent image area in each unit has an on / off relationship between the fifth image line area and the sixth image line area. , When either one of the lines is formed, the other line is not formed, or the unit is formed as a unit that does not form both the fifth line and the sixth line, The first drawing line and the second drawing line have the same area. Thus, the fifth image line and the sixth image line have the same area, and either the positive image or the negative image of the first invisible image is formed by the first image line, and the second image line is formed. To form the other of the negative image or the positive image of the first invisible image, form the positive image or the negative image of the second invisible image by the fifth image line, and form the first image by the sixth image line. The distance between the adjacent first image line or the second image line between two or three units adjacent to each other along the first direction in which the other negative image or positive image of the two invisible images is formed Is disposed at a distance greater than or equal to a predetermined distance, the fourth image area or the second image area adjacent to the first image area sandwiched between the adjacent first image line or the second image line The fourth drawing area adjacent to the drawing line area is half the drawing line area of the first drawing line and the second drawing line. A fourth image line that is the product and is the same color is formed, and between the adjacent two or three units along the first direction, up to the adjacent fifth image line or the sixth image line. When the distance is more than a predetermined distance, the seventh image area or the sixth image area adjacent to the fifth image area sandwiched between the adjacent fifth image line or the sixth image line or the sixth image line A seventh image line having the same color as that of the fifth image line and the sixth image line is formed in the seventh image line region adjacent to the image line region of This is a forgery-preventing printed matter in which a visible image is formed by forming a third image line in the image line area.

  The printed matter for preventing forgery of the present invention includes the first image line, the second image line, the third image line, the fourth image line, the fifth image line, the sixth image line, and the seventh image line. The image line is printed with ink containing a glitter material, and the first image line, the second image line, the third image line, the fourth image line, the fifth image line, the sixth image line, and It is a forgery-preventing printed matter in which a desired pattern is formed by solid printing using a colorless and transparent material on at least a part of the seventh image line.

  In addition, the predetermined distance in the forgery-preventing printed matter of the present invention is from one first image area disposed in two units adjacent to each other along the first direction to the other first image area. It is a printed matter for preventing forgery of distance.

  Further, the third image line in the forgery-preventing printed matter of the present invention forms a visible image having a continuous tone by at least one method selected from the size of the image line, the density of the image line, and the density of the image line. It is characterized by being a forgery-proof printed matter.

  The third image line in the forgery-preventing printed material according to the present invention is a forgery-preventing printed material including image lines of at least two colors.

  In addition, the forgery-preventing printed matter of the present invention is a forgery-preventing printed matter having a side length of 1 mm or less in the unit.

  In addition, the first image line, the second image line, the fourth image line, the fifth image line, the sixth image line, and the seventh image line in the forgery-preventing printed material of the present invention are hues. Is a different anti-counterfeit printed matter.

  The printed matter for preventing forgery of the present invention is not a flat printed pattern as in the prior art, but a visible image can be provided by the third image line, which is peculiar to securities with a high degree of freedom composed of these visible images. There is an effect that a beautiful design with a high-class feeling can be expressed.

  In addition, the visible image having the design property provided for the printed pattern in the anti-counterfeit printed matter of the present invention can express various beautiful things such as a continuous color image, a full-color image, and a rainbow effect in addition to a monochromatic pattern, When the invisible image is developed, the visibility is not hindered, and by overlaying the discriminating tool on the printed matter, the invisible image can be easily and clearly switched to the visible image.

  Furthermore, since the anti-counterfeit printed matter of the present invention can provide an anti-counterfeit effect by the shape and arrangement of the image line, it is excellent in cost performance, and the plate making and printing methods are not limited at all. There is an effect that there is a degree of freedom.

The perspective view which discriminate | determines authenticity by making an invisible image express easily by superimposing the discrimination tool 2 on the printed matter 1. FIG. The front view which observed the printed pattern 3 of the printed matter 1 by visual observation on normal visible conditions. The figure by which the discrimination tool 2 was visually recognized as the positive or negative state of the invisible image 5 or the positive or negative state of the invisible image 6 by the difference in the position where the discriminator 2 overlaps the printed pattern 3. The schematic diagram which showed simply an example of the unit in Embodiment 1. FIG. The flowchart which showed the algorithm which performs deletion and addition of an image line for relieving that a density | concentration becomes unbalanced visually. FIG. 6 is a diagram illustrating a state in which the image line A ′ [v] of the unit [v] is deleted according to the algorithm of FIG. 5. FIG. 6 is a diagram showing a state in which an image line a and an image line E having an image area that is half or substantially half of the image line A and the image line A ′ are added according to the algorithm of FIG. 5; Explanatory drawing which shows the state which the image line A located in the centerline 7 expand | swells according to the characteristic of a lenticular lens, and a visible image expresses. The schematic diagram which showed simply an example of the unit in Embodiment 2. FIG. The flowchart which showed the algorithm which performs deletion and addition of an image line for relieving that a density | concentration becomes unbalanced visually. FIG. 11 is a diagram illustrating a state in which the image line A ′ [v] and the image line B ′ [v] of the unit [v] are deleted according to the algorithm of FIGS. 5 and 10. In accordance with the algorithm of FIG. 5 and FIG. 10, a line a, a line b, and a line E having a line area that is half or substantially half the line A, the line A ′, the line B, or the line B ′ are added. The figure which showed the state made. Explanatory drawing which shows the state which the image line A located in the centerline 7 expand | swells according to the characteristic of a lenticular lens, and a visible image expresses. Explanatory drawing which shows the state which the image line B located in the centerline 7 expand | swells according to the characteristic of a lenticular lens, and a visible image expresses. Explanatory drawing which shows the division | segmentation of the drawing line element in the drawing line C. FIG. FIG. 3 is an explanatory diagram showing that the pattern 4 shown in FIG. 2 is configured by the presence or absence of an image line C at predetermined positions arranged in a matrix. Explanatory drawing which shows that the pattern 4 is comprised by the image line c1 and the image line c2 in the unit shown by FIG.15 (b), and is arrange | positioned at matrix form. FIG. 16 is an explanatory diagram showing that the center line 7 of each lens in the lenticular lens is placed so as to coincide with the center of the image line c2, that is, the line L6 in FIG. FIG. 16 is an explanatory diagram showing that the center line 7 of each lens in the lenticular lens is placed so as to coincide with the center of the image line c1, that is, the line L5 in FIG. Explanatory drawing which shows that the pattern 4 is comprised by the unit by which the drawing line c3 shown in FIG.15 (c), the drawing line c4, and the drawing line c5 were each colored with a different color, and is arrange | positioned in matrix form. Explanatory drawing which shows that the pattern 4 is expressing in the rainbow color by the overlapping condition of a lenticular lens. Explanatory drawing which shows that the pattern 4 expresses in rainbow color and the background of the pattern 4 is expressed in the rainbow color which consists of a color arrangement reverse to the rainbow color of the pattern 4 by the overlap condition of a lenticular lens. FIG. 5 is an explanatory diagram showing units that constitute a highlight portion, a halftone portion, and a shadow portion by different drawing area ratios of the drawing line C. FIG. 3 is an explanatory diagram showing units that constitute a highlight portion, a halftone portion, and a shadow portion when the image line density of the image line C varies stepwise. Explanatory drawing which shows that the pattern 4 is expressed by the continuous tone. Explanatory drawing which shows the case where the printed matter 1 is observed visually in a diffused light area | region, and the case where the printed matter 1 is observed visually in a regular reflection light area | region. Explanatory drawing which shows three positional relationship of each illumination light source 9, the viewpoint 10, and the printed matter 1 when the printed matter 1 is observed by a diffused light area | region and a regular reflection light area | region. Explanatory drawing which showed an example of the conventional printed matter. Explanatory drawing which showed an example of the conventional printed matter.

  Hereinafter, the anti-counterfeit printed matter according to the first and second embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the first and second embodiments described below, and includes various other embodiments within the scope of the technical idea described in the claims. It is.

  As shown in FIG. 1, the anti-counterfeit printed matter according to Embodiments 1 and 2 of the present invention easily discriminates authenticity by causing an invisible image to easily appear by overlaying the discriminator 2 on the printed matter 1. Is something that can be done. The discriminator 2 is a line filter, a lenticular lens, or the like in which a plurality of straight lines are formed along a single line in a transparent filter.

  As shown in FIG. 1, when the printed pattern 3 of the printed matter 1 is visually observed under normal visibility conditions, a pattern 4 made up of arbitrary figures and characters is visually recognized as shown in FIG. Then, when the discriminating tool 2 is superimposed on the printed matter 1 with a predetermined angle (this is assumed to be 0 degree), the first invisible image 5 as shown in FIG. Expressed. At this time, the invisible image 5 is visually recognized in a positive or negative state due to a difference in position where the discriminating tool 2 such as a line filter or a lenticular lens overlaps the printed pattern 3. What appears to be either negative or positive is caused by the relative position between the discriminator 2 and the printed material 1 and is within the scope of the effect of the present invention.

(1) Embodiment 1
A forgery prevention printed matter according to Embodiment 1 of the present invention will be described.
FIG. 4 is simple so that a partial enlargement in the configuration of one stroke of the printed pattern for the printed matter in Embodiment 1 and a configuration arranged in a matrix that forms the printed pattern 3 printed on the printed matter can be understood. It is the schematic diagram shown. Here, the vertical dimension Sv is 1 mm or less, for example, 340 μm. The image line in FIG. 4 is a minimum unit called a unit, and includes an image line A and an image line A ′. The image lines in FIG. 4 are regularly arranged in a matrix on the surface of the printed material. The image line A and the image line A ′ are paired and are in an on-off relationship with each other. For example, when one is black (on), the other is white (off), and when one is colored, the other is uncolored. Basically, both are black or both are white. It is not that. The image line A and the image line A ′ have the same area. The presence of the image line A and the image line A ′ is not visible under normal visibility conditions, and is invisible image (negative or positive) only by the image line A, and invisible image (positive image) only by the image line A ′. Or negative). The term “the same area” as used in the present invention includes a case where the image area ratio is substantially the same.

  Further, the image line C shown in FIG. 4 has the same or larger area as the image line A and the image line A ′, and a visual image (design: pattern) is formed by the image line C, which is shown in FIG. The image line C is arranged so as to be sandwiched between the image line A and the image line A ′. Further, the image line C shown in FIG. 4 is a rectangle with the horizontal direction of the unit as the longitudinal direction and the dimension Sh as the maximum width. That is, the region having the image line C is connected in a horizontal straight line by the vicinity of the unit.

  The printed pattern 3 of the printed matter 1 shown in FIG. 2 is a unit in which the units shown in FIG. 4 are arranged continuously and regularly in a matrix with vertical step number v and horizontal step number h without vertical and horizontal gaps. It is a thing. The number of steps referred to in the present embodiment refers to the number of units repeated on the printed pattern 3, and the number of steps is not limited at all, and the resolution of the visible image and the invisible image depends on the number of steps. It is proportional. Further, the image line A and the image line A ′ are arranged in the horizontal direction, thereby forming a parallel line composed of the image line A group and a parallel line composed of the image line A ′ group. That is, FIG. 4 shows a state in which an invisible image is applied by line phase modulation. However, in this state, both the image line A and the image line A ′ are turned on (colored) in the vicinity of the unit where the image lines A and the image lines A ′ are arranged in a matrix. ), And the image A and the image line A ′ are displayed in the vicinity of the unit in which the plurality of image lines A and the plurality of image lines A ′ are arranged in a matrix. If both of these are turned off (no color), the density may appear low (light), and the density may appear to be unbalanced with the naked eye.

  In order to relieve the density appearing to be unbalanced, the image line E and the image line a shown in FIG. 4 are arranged so as to be sandwiched between the image lines C, respectively. The image line a and the image line E shown in FIG. 4 are shifted from the image line A or the image line A ′ by a half length of the dimension Sh in the unit lateral direction. The image line a is arranged in the unit vertical direction with respect to the image line A, and is arranged so as to be sandwiched between the image line A ′ and the image line A ′ in the vicinity of the units arranged in a matrix. . On the other hand, the image line E is arranged in the unit vertical direction with respect to the image line A ′, and is arranged so as to be sandwiched between the image line A and the image line A in the vicinity of the units arranged in a matrix. Yes. Thereby, the image lines for the first and second invisible images and the image lines for alleviating the density imbalance are connected in a horizontal straight line in the unit horizontal direction.

  The deletion and addition of the image line are executed for each unit [v] which is the minimum unit by the algorithm shown in FIG. [V] is the number of steps obtained by counting units from the top. First, in the process f1, the image line A [v] and the image line A '[v] are sequentially detected in the unit [v] for each column arranged in a matrix. Note that the method of detecting the image line A [v] and the image line A ′ [v] is, for example, in general when labeling is performed in a unit to be processed when the print pattern 3 is a binary image in the bitmap format. The image line A [v] or the image line A ′ [v] may be identified by a process called.

  Next, in process f2, when the condition of having the image line A ′ [v] in the unit [v] and the image line A [v + 1] in the unit [v + 1] is met, in the process f3, The image line A ′ [v], which is the position where the unit [v] is originally arranged, is deleted. That is, as shown in FIG. 6A, when the unit [v], the unit [v + 1], and the unit [v + 2] are arranged, the line A ′ [v] and the unit [v + 1] of the unit [v] When the image line A [v + 1] is adjacent, the image line A ′ [v] of the unit [v] is deleted as shown in FIG. If the condition of the process f2 is not met, the process proceeds to process 4.

  Next, in process f4, when the condition that the unit [v] has the image line A [v] and the unit [v + 1] has the image line A ′ [v + 1] is satisfied, the process f5 The image line a [v] is added in the unit [v]. That is, as shown in FIG. 7B, an image line a having an image area half that of the image line A or the image line A ′ is added between the unit [v] and the unit [v + 1]. This alleviates the density imbalance between the unit [v] and the unit [v + 1] with the naked eye. In addition, the half line area referred to in the present invention includes substantially half the line area.

  Next, in the process f6, the condition that the unit [v] has the image line A ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line A [v + 2]. In step f7, the image line E [v + 1] in the unit [v + 1] is added. That is, as shown in FIG. 7C, the image area that is half of the image line A or the image line A ′ is set in an area adjacent to the position where the image line A [v + 1] of the unit [v + 1] is arranged. The image line E having is added. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  Next, in process f8, the unit [v] has the image line A ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line A ′ [v + 2]. When the condition is met, the image line E [v + 1] and the image line a [v + 1] in the unit [v + 1] are added in the process f9. That is, as shown in FIG. 7D, the image area that is half of the image line A or the image line A ′ is set at a position adjacent to the area where the image line A [v + 1] of the unit [v + 1] is arranged. The image line A having the image area A that is half of the image line A or the image line A ′ at a position adjacent to the area where the image line A ′ [v + 1] of the unit [v + 1] is arranged is added. Is added. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  In this state, for example, the discriminating tool 2 made of a lenticular lens is overlaid on the printed pattern 3 on the printed matter 1 and visually observed from the front, whereby an invisible image applied to the printed pattern 3 is expressed as a visible image. be able to. In the first embodiment, the dimension Sv is 340 μm, and the printed pattern 3 is printed on the coated paper by offset printing. However, the dimension Sv, the substrate of the printed material, the printing method, the printing material, the printing apparatus, and the like are not limited at all.

  As shown in FIG. 8A, the center line 7 of each lens in the lenticular lens as the discriminator 2 coincides with the center of the image line A, that is, the line L1 in FIG. To be placed. In this case, as shown in FIG. 8B, the image line A is enlarged due to the action of the lenticular lens, so that the image (pattern) formed by the image line A can be confirmed. Become. At this time, the image line C constituting the visible image does not coincide with the center line 7 of each lens of the lenticular lens, and is not viewed from directly above the discriminator 2. As a result, the pattern 4 shown in FIG. 2 is switched to the first invisible image 5 as shown in FIG. Further, when the center line 7 of each lens of the discriminator 2 is moved along the vertical axis direction so as to coincide with the line L2 in FIG. The visually recognized first invisible image is viewed with the negative-positive reversal.

(2) Embodiment 2
Next, a forgery prevention printed matter according to Embodiment 2 of the present invention will be described. The first embodiment is an example in which the first invisible image is expressed, but the second embodiment describes an example in which two invisible images are expressed by the first invisible image and the second invisible image. It is.

  FIG. 9 is a simple illustration so as to understand a partial enlargement in the configuration of one stroke of the printed pattern for the printed matter in Embodiment 1 and a configuration arranged in a matrix that forms the printed pattern 3 printed on the printed matter. It is the schematic diagram shown. Here, the vertical dimension Sv is 1 mm or less, for example, 340 μm. The image line in FIG. 9 is a minimum unit called a unit, and the image A and the image line A ′, and the image line B and the image line B ′ constitute an invisible image. The image lines shown in FIG. 9 are regularly arranged in a matrix on the surface of the printed material. The image line A and the image line A ′ are paired and are in an on / off relationship with each other. On the other hand, the image line B and the image line B 'form a pair and are in an on-off relationship with each other. The image line and the image line A ′ have the same area, and the image line B and the image line B ′ have the same area. The presence of the image line A and the image line A ′ and the image line B and the image line B ′ are not visually recognized under normal visible conditions, and the invisible image (negative or positive), image only by the image line A. An invisible image (positive or negative) is formed only by the line A ′, an invisible image (negative or positive) is formed only by the image line B, and an invisible image (positive or negative) is formed only by the image line B ′. Yes.

  Similarly to the first embodiment, a visible image (design: pattern) is formed by the drawing line C shown in FIG. 9, and a pattern 4 made up of arbitrary figures and characters as shown in FIG. 2 is formed. An area where the image C is sandwiched between the image A and the image B in the vertical direction of the unit, and the image C is the image B and the image A ′ in the vertical direction of the unit. Of the unit arranged in a matrix, the region arranged so that the image line C is sandwiched between the image line A ′ and the image line B ′ in the vertical direction of the unit, and the unit arranged in a matrix In the vicinity, the image line C is constituted by an image line B ′ and a region arranged so as to be sandwiched between the image line A in the vertical direction of the unit. Further, the image line C shown in FIG. 9 is a rectangle having the horizontal direction of the unit as the longitudinal direction and the dimension Sh as the maximum width. That is, the region having the image line C is connected in a horizontal straight line by the vicinity of the unit.

  The printed pattern 3 of the printed matter 1 shown in FIG. 2 has the units shown in FIG. 9 arranged continuously and regularly in a matrix with vertical and horizontal step numbers v and horizontal steps h, without vertical and horizontal gaps. It is a thing. The number of steps referred to in the present embodiment refers to the number of units repeated on the printed pattern 3, and the number of steps is not limited at all, and the resolution of the visible image and the invisible image depends on the number of steps. It is proportional. Further, the image line A and the image line A ′ are arranged in the horizontal direction, thereby forming a parallel line composed of the image line A group and a parallel line composed of the image line A ′ group. That is, FIG. 9 shows a state in which an invisible image is applied by line phase modulation. However, in this state, the visual line A and the visual line A ′ or the visual line B and the visual line in the vicinity of the unit in which the multiple visual lines A and the multiple visual lines A ′ are arranged in a matrix form with the naked eye. When both B ′ are turned on (colored), the density looks high (darker), or a plurality of image lines A and a plurality of image lines A ′ or a plurality of image lines B and a plurality of image lines B ′. Are turned off (uncolored) in the vicinity of the unit arranged in a matrix, and the density appears to be low (light). Thus, the concentration may appear to be unbalanced with the naked eye.

  In order to alleviate the state in which the density appears to be unbalanced, the image line a, the image line b, and the image line E shown in FIG. 9 are arranged so as to be sandwiched between the image lines C, respectively. The image line a, the image line b, and the image line E shown in FIG. 9 are provided to alleviate the density imbalance when viewed with the naked eye. The image line A and the image line B, or the image line A ′ and the image line B ′, are shifted in the horizontal direction of the unit with a length that is half the dimension Sh. The image line a is arranged in the unit vertical direction with respect to the image line A, and is arranged so as to be sandwiched between the image line B ′ and the image line B ′ in the unit, or of the units arranged in a matrix. It is arranged so as to be sandwiched between the image line B ′ and the image line B ′ in the vicinity. On the other hand, the image line b is arranged in the unit vertical direction with respect to the image line B, and is arranged so as to be sandwiched between the image line A and the image line A in the unit, or of the units arranged in a matrix. It is arranged so as to be sandwiched between the image line A ′ and the image line A ′ in the vicinity. As a result, the first and second invisible image lines and the image line for alleviating the density imbalance are connected in a horizontal straight line in the unit horizontal direction.

  The deletion and addition of the image line are executed for each unit [v] which is the minimum unit by the algorithm shown in FIG. [V] is the number of steps obtained by counting units from the top. First, in the process f1, the line A [v] and the line A ′ [v] are sequentially detected in the unit [v] for each column arranged in a matrix. Note that the method of detecting the image line A [v] and the image line A ′ [v] is, for example, in general when labeling is performed in a unit to be processed when the print pattern 3 is a binary image in the bitmap format. The image line A [v] or the image line A ′ [v] may be identified by a process called.

  Next, in process f2, when the condition of having the image line A ′ [v] in the unit [v] and the image line A [v + 1] in the unit [v + 1] is met, in the process f3, The image line A ′ [v], which is the position where the unit [v] is originally arranged, is deleted. That is, as shown in FIG. 11A, when the unit [v], the unit [v + 1], and the unit [v + 2] are arranged, the line A ′ [v] and the unit [v + 1] of the unit [v] When the image line A [v + 1] is adjacent, the image line A ′ [v] of the unit [v] is deleted as shown in FIG. If the condition of the process f2 is not met, the process proceeds to process 4.

  Next, in the process f4, when the condition having the image line A [v] in the unit [v] and the image line A ′ [v] in the unit [v + 1] is met, in the process f5, The image line a [v] is added in the unit [v]. That is, as shown in FIG. 12B, an image area that is half of the image line A or the image line A ′ is set between the image line A of the unit [v] and the image line A ′ of the unit [v + 1]. The image line a having is added. This alleviates the density imbalance between the unit [v] and the unit [v + 1] with the naked eye.

  Next, in the process f6, the condition that the unit [v] has the image line A ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line A [v + 2]. In step f7, the image line E [v + 1] in the unit [v + 1] is added. That is, as shown in FIG. 12 (c), the image line A or the image line A 'is half of the image line A [v] and the image line A of the unit [v + 2]. An image line E having an area is added. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  Next, in process f8, the unit [v] has the image line A ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line A ′ [v + 2]. When the condition is met, the image line E [v + 1] and the image line a [v + 1] in the unit [v + 1] are added in the process f9. That is, as illustrated in FIG. 12D, the image line E and the image line a having an image area half that of the image line A or the image line A ′ are added to the unit [v + 1]. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  On the other hand, image line deletion and addition are executed for each unit [v], which is the minimum unit, by the algorithm shown in FIG. [V] is the number of steps obtained by counting units from the top. First, in process f11, the image line B [v] and the image line B '[v] are sequentially detected in the unit [v] for each column arranged in a matrix. The method for detecting the image line B [v] and the image line B ′ [v] is, for example, in the case where the print pattern 3 is a binary image in the bitmap format, generally labeling in the unit to be processed. The image line B [v] or the image line B ′ [v] may be identified by a process called.

Next, in process f12, when the condition that the unit [v] has the image line B ′ [v] and the unit [v + 1] has the image line B [v + 1] is met, in process f13, The image line B ′ [v], which is the position where the unit [v] is originally arranged, is deleted. That is, as shown in FIG. 11C, when the unit [v], the unit [v + 1], and the unit [v + 2] are arranged, the line B ′ [v] and the unit [v + 1] of the unit [v] When the image line B [v + 1] is adjacent, the image line B ′ [v] of the unit [v] is deleted as shown in FIG.
If the condition of the process f12 is not met, the process proceeds to process 4.

  Next, in process f14, when the condition that the unit [v] has the image line B [v] and the unit [v + 1] has the image line B ′ [v] is met, in process f15, The image line b [v + 1] is added in the unit [v + 1]. That is, as shown in FIG. 12 (f), half of the image line B or the image line B ′ between the image line B [v] of the unit [v] and the image line B [v + 1] of the unit [v + 1]. The image line b having the image line area is added. This alleviates the density imbalance between the unit [v] and the unit [v + 1] with the naked eye.

  Next, in process f16, a condition that the unit [v] has the image line B ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line B [v + 2]. In step f17, the image line E [v + 1] in the unit [v + 1] is added. That is, as shown in FIG. 12G, the image line B or image line B ′ is centered on the image line B ′ [v] of the unit [v] and the image line B [v + 2] of the unit [v + 2]. A line E having a half line area is added. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  Next, in process f18, the unit [v] has the image line B ′ [v], the unit [v + 1] has no image line, and the unit [v + 2] has the image line B ′ [v + 2]. When the conditions are met, in process f19, the image line E [v + 1] in the unit [v + 1] and the image line b [v + 2] in the unit [v + 2] are added. That is, as shown in FIG. 12 (h), the image line B or the image line B is placed at a position where the image line B ′ [v] of the unit [v] and the image line B ′ [v + 2] of the unit [v + 2] are sandwiched. An image line E and an image line b having a line area half of 'are added. This alleviates the density imbalance between the unit [v] and the unit [v + 2] with the naked eye.

  In this state, for example, the discriminating tool 2 made of a lenticular lens is overlaid on the printed pattern 3 on the printed matter 1 and visually observed from the front, whereby an invisible image applied to the printed pattern 3 is expressed as a visible image. be able to. In the first embodiment, the dimension Sv is 340 μm, and the printed pattern 3 is printed on the coated paper by offset printing. However, the dimension Sv, the substrate of the printed material, the printing method, the printing material, the printing apparatus, and the like are not limited at all.

  More specifically, the discriminator 2 made of a lenticular lens is superimposed on the printed pattern 3 on the printed matter 1 so that the line L1 in FIG. 9 and the center line of each lens coincide with the printed pattern 3, and from the front. The state observed visually is shown in FIG. When the center line 7 of the lenticular lens is at the position shown in FIG. 13A so as to coincide with the line L1 in FIG. 9, the image line A is located on the center line 7. Since the image line A located at the center line 7 appears to expand due to the characteristics of the lenticular lens, a visual image of a figure as shown in FIG. Further, when the center line 7 of the lenticular lens is located at the position coincident with the line L2 in FIG. 9, the image line A 'is located on the center line 7. Since the image line A ′ located at the center line 7 appears to expand due to the characteristics of the lenticular lens, the negative / positive appears to be reversed. Accordingly, the first invisible image as shown in FIG. 3A described above appears as a visible image that looks either negative-positive.

  Next, the discriminator 2 is superimposed on the printed pattern 3 on the printed matter 1 by shifting the printed pattern 3 in the vertical axis direction so that the line L3 in FIG. 9 and the center line of each lens of the lenticular lens coincide with each other. The state observed visually is shown in FIG. In this case, the center line 7 of the lenticular lens is at the position shown in FIG. 14A, and the image line B is located at the center line 7. Since the image line B located at the center line 7 appears to expand due to the characteristics of the lenticular lens, a visual image of a figure as shown in FIG. 14B appears visually. Further, when the center line 7 of the lenticular lens is at a position coincident with the line L4 in FIG. 9, the image line B 'is located on the center line 7. Since the image line B ′ located at the center line 7 appears to expand due to the characteristics of the lenticular lens, the negative / positive appears to be reversed. That is, the second invisible image 6 as shown in FIG. 3B appears as a visible image that looks either negative-positive.

  When discriminating between the first invisible image and the second invisible image using the discriminator, the visible images formed by the image line a, the image line b, and the image line E are almost invisible or visible. It becomes difficult. For this reason, when a 1st invisible image and a 2nd invisible image are expressed as a visible image, these visibility is not inhibited.

  Here, regardless of the lenticular lens, the discriminator 2 can obtain the same effect even if it is a line filter, for example. In the case of this line filter, the portion corresponding to the line on the filter hides the line that forms the visible image, so that only the line that forms the invisible image can be confirmed. The image may not be completely concealed and may be slightly recognized. However, since this does not impair the effect of the present invention, it is sufficient to use a line filter for simple discrimination.

(3) Embodiment 3
Next, a forgery prevention printed matter according to Embodiment 3 of the present invention will be described. The first embodiment describes an example in which the first invisible image appears, and the second embodiment describes an example in which two invisible images by the first invisible image and the second invisible image appear. However, in the third embodiment, an example having a visual effect when further visualized in the first and second embodiments will be described.

  As described above, the image line C in the present invention has a larger area than the image line A, the image line A ′, the image line B, or the image line B ′, and forms a visible image (design: pattern) by the image line C. 2 is an image line constituting the pattern 4 made up of arbitrary figures and characters as shown in FIG. 2, and as shown in FIG. 4 or FIG. 9, the image line C has the horizontal direction of the unit as the longitudinal direction, It is a rectangle with the dimension Sh as the maximum width. That is, the region having the image line C is connected in a horizontal straight line by the vicinity of the unit. FIG. 15 explains the division of the drawing elements in the drawing C.

  For example, the simplest expression method for constructing the pattern 4 made up of arbitrary figures and characters shown in FIG. 2 is a printed pattern 3 in which the units shown in FIG. 15A are arranged in a matrix. As shown in FIG. 16, the pattern 4 shown in FIG. 2 is formed by the presence or absence of the image line C at predetermined positions arranged in a matrix. That is, it is a visible image that can be visually recognized from the printed matter 1 when visually recognized by normal visual observation. Further, in the printed pattern 3 shown in FIG. 17, the background portion of the pattern 4 is constituted by the line C in the unit shown in FIG. 15A, and the pattern 4 is the unit shown in FIG. 15B. The image line c1 and the image line c2 are arranged in a matrix. Note that the horizontal dimension of the image line c1 and the image line c2 shown in FIG. 15B is about ½ of the horizontal dimension Sh of the unit.

  As shown in FIG. 17A, the center line 7 of each lens in the lenticular lens as the discriminator 2 is at the center of the image line c1, that is, the line in FIG. Place to match L5. In this case, as shown in FIG. 17B, the image line c1 is enlarged by the action of the lenticular lens, and therefore the image (pattern) or hue formed by the image line c1 can be confirmed. It will be possible. At that time, the image line B and image line B ′ constituting the invisible image do not coincide with the center line 7 of each lens of the lenticular lens, and the image line A, image line A ′, image line a ′ and The image line E is not visually recognized from directly above the discriminating tool 2 because it has a positional relationship unrelated to the appearance of the invisible image. Thereby, the pattern 4 shown in FIG. 2 appears (or is displayed as the hue of the image line c1).

  Further, as shown in FIG. 18A, the center line 7 of each lens in the lenticular lens as the discriminator 2 is located at a predetermined position on the printed material, that is, the center of the image line c2, that is, FIG. Is placed so as to coincide with the line L6. In this case, as shown in FIG. 18B, the image line c2 is enlarged by the action of the lenticular lens, and therefore, it is possible to confirm the image (pattern) or hue formed by the image line c2. It will be possible. At that time, the image line A and image line A ′ constituting the invisible image do not coincide with the center line 7 of each lens of the lenticular lens, and the image line B, image line B ′, image line b ′ and Since the image line E has a positional relationship unrelated to the appearance of the invisible image, the image line E is not visually recognized from directly above the determination tool 2. Thereby, the pattern 4 shown in FIG. 2 appears (or is displayed as the hue of the image line c2).

  Further, FIG. 19 is an example in which the image line c1 and the image line c2 shown in FIG. 15B are inverted between the pattern 4 and the background of the pattern 4. As shown in FIG. 19A, the center line 7 of each lens in the lenticular lens as the discriminator 2 is at the center of the image line c1, that is, the line in FIG. There is a region placed so as to coincide with L5 and a region placed so that the center line 7 coincides with the center of the image line c2, that is, the line L6 in FIG. In this case, as shown in FIG. 19B, the region placed so as to coincide with the line L5 by the action of the lenticular lens is in a state where the image line c1 is enlarged and placed so as to coincide with the line L6. Since the image area c2 is enlarged in the placed area, the pattern 4 shown in FIG. 2 appears (or the pattern 4 and the background of the pattern 4 appear in different hues). In addition, the image line A, the image line A ′, the image line a ′, the image line B, the image line B ′, the image line b ′, and the image line E have a positional relationship unrelated to the appearance of the invisible image. Therefore, it is not visually recognized from right above the discriminator 2. In this example, the pattern 4 can be visually recognized by normal visual observation because the unit provided with the image lines c1 and c2 and the image lines c1 and c2 are reversed in the horizontal direction of the unit. Absent. That is, the pattern 4 can be a third invisible image.

  Further, FIG. 15C is a unit in which the image line C is divided into three, and the horizontal dimensions of the image line c3, the image line c4, and the image line c5 shown in FIG. It is about 1/3 of the horizontal dimension Sh. FIG. 20 shows the image lines constituting the pattern 4 shown in FIG. 2, and the image lines c3, c4 and c5 shown in FIG. It is composed of colored units and arranged in a matrix. As shown in FIG. 20A, for example, when the lenticular lens as the discriminator 2 is obliquely overlapped on the printed material, the center line 7 of each lens is the center of the image line c3, that is, FIG. ) So that the center line 7 of each lens coincides with the center of the image line c4, that is, the line L8 in FIG. The lens is placed so that the center line 7 of the lens coincides with the center of the image line c5, that is, the line L9 in FIG. In this case, as shown in FIG. 20B, the image line c3, the image line c4, and the image line c5 are enlarged by the action of the lenticular lens. The hue formed by the image line c5 can be confirmed to be iridescent. In addition, the image line A, the image line A ′, the image line a ′, the image line B, the image line B ′, the image line b ′, and the image line E have a positional relationship unrelated to the appearance of the invisible image. Therefore, it is not visually recognized from right above the discriminator 2.

  In the unit shown in FIG. 15E, the image line c1 and the image line c2 forming the visible image (design: pattern) are each divided into two. By setting the image line c1 and the image line c1 ′ and the image line c2 and the image line c2 ′ to be mutually on-off like the image line A and the image line A ′ and the image line B and the image line B ′, It becomes possible to provide a third invisible image or a fourth invisible image that appears depending on the position of the center line 7 of each lens in the lenticular lens. Further, in the unit shown in FIG. 15F, the image line c3, the image line c4, and the image line c5 forming the visible image (design: pattern) are each divided into two. The line c3 and the line c3 ′, the line c4 and the line c4 ′, and the line c5 and the line c5 ′ are mutually connected in the same manner as the line A and the line A ′ and the line B and the line B ′. With the on / off relationship, it is possible to provide a third invisible image, a fourth invisible image, or a fifth invisible image that is expressed by the position of the center line 7 of each lens in the lenticular lens.

  According to the third embodiment, by combining the units shown in FIG. 15, for example, the pattern 4 in FIG. 2 is configured in FIG. 15 (c), and the background of the pattern 4 is illustrated in FIG. 15 (a). When configured, as shown in FIG. 21, the pattern 4 can be expressed in a rainbow color by the overlapping state of the lenticular lenses as the discriminating tool 2. Further, for example, the pattern 4 in FIG. 2 is configured in FIG. 15C, and the background of the pattern 4 is configured by inverting the image line c3, the image line c4, and the image line c5 in FIG. 15C in the horizontal direction. When arranged, as shown in FIG. 22, the pattern 4 appears in a rainbow color due to the overlapping state of the lenticular lens as the discriminator 2, and the background of the pattern 4 is a reverse color to the rainbow color of the pattern 4. It can be expressed in rainbow colors consisting of arrangements. Accordingly, the combinations of the units shown in FIG. 15 are not limited in any way for achieving the effects of the present invention.

  According to the present embodiment, a clear visible image having a high degree of freedom and design using the image line C, the image line c1, the image line c2, the image line c3, the image line c4, and the image line c5 is converted into an invisible image. Since it can be formed without hindering the visibility at the time of the expression of, it is also useful for printed matter such as securities. Also, by overlaying a single discriminator on the printed material, it is possible to easily and clearly express an invisible image formed by the image lines A and A ′ and the image lines B and B ′. . Furthermore, a sufficient anti-counterfeit effect can be obtained only by monochromatic printing in which the image lines constituting the printed matter in the present invention have the same color, and the plate making, printing method, etc. are not limited at all, and thus the cost can be reduced. .

(4) Embodiment 4
Next, a forgery prevention printed matter according to Embodiment 4 of the present invention will be described. As described above, the image line C forms a visible image (design: pattern). As illustrated in FIG. 4 or FIG. 9, the image line C has the unit horizontal direction as the longitudinal direction and the dimension Sh as the maximum width. Is a rectangle. That is, the region having the image line C is connected in a horizontal straight line by the vicinity of the unit. By changing the line area ratio or the line density of the line C in the units arranged in a matrix, the visible image can be expressed as a continuous tone image.

  FIG. 23 and FIG. 24 are units showing the configuration of the image line C that makes it possible to represent a visible image as a continuous tone image. 23 (a) to 23 (c) are different from each other in the line area ratio of the line C. FIG. 23 (a) is a unit used for a highlight portion, and FIG. 23 (b) is a halftone portion. By configuring the unit used, that is, the unit used for the shadow portion in FIG. 23C, it becomes possible to express the continuous tone as the pattern 4 shown in FIG.

  24 (a) to 24 (c) show that the line density of the line C differs stepwise. FIG. 24 (a) is a unit used for a highlight portion, and FIG. 24 (b) is an intermediate. By configuring the unit used for the tone part, that is, the unit used for the shadow part in FIG. 24C, it is possible to express the continuous tone as the pattern 4 shown in FIG. Furthermore, the image line C shown in FIG. 24 is not limited to a single color, and may be composed of a plurality of image lines composed of subtractive color mixture of cyan, magenta, yellow, and black, for example. Thus, the printed pattern 3 shown in FIG. 25 can be expressed as a full-color pattern 4 having an arbitrary continuous tone.

(5) Embodiment 5
FIG. 26 shows a printed matter for preventing forgery according to the fifth embodiment, in which the ink that forms the printed pattern 3 is printed using an ink that includes glitter, and the desired color is printed on the printed pattern 3 using a colorless transparent material. The pattern D (here, the letter N) is printed.

  In the printed matter for preventing forgery having the visible image shown in FIG. 26, FIG. 27 shows three illumination light sources 8, viewpoints 9 and printed matter 1 when the printed matter 1 is observed in the diffused light region and the specularly reflected light region. The positional relationship is illustrated. When the illumination light source 8, the viewpoint 9, and the printed material 1 are in the positional relationship of FIG. 27A, the observation is made in the diffused light region, and the illumination light source 8, the viewpoint 9, and the printed material 1 are in the position of FIG. When there is a relationship, it is observed in the specular reflection light region.

  As shown in FIG. 27A, when the printed matter 1 is visually observed in the diffused light region, the pattern D made of a colorless transparent material applied on the printed pattern 3 is completely transmitted. The printed pattern 3 made of ink including glitter is in a state where it can be visually recognized as shown in FIG. On the other hand, as shown in FIG. 27 (b), when the printed matter 1 is visually observed in the specular reflection region, the printed pattern 3 made of ink including the glitter is caused by the glitter effect caused by the regular reflection light. The brightness increases and the effect of the glitter of the printed pattern 3 is suppressed for the pattern D portion made of a colorless and transparent material. As a result, only the pattern D is highlighted and visually recognized as shown in FIG. Therefore, the letter “N” configured by the arrangement of the pattern D is observed.

  The printed pattern 3 of the anti-counterfeit printed matter of Embodiments 1 to 4 is printed with a material containing a glittering material, and a pattern made of a colorless transparent material such as a transparent varnish is printed on the printed pattern 3. However, the same effect as the printed matter shown in the fifth embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Print 2 Discriminator 3 Print pattern 4 Pattern 5 Invisible image 6 Invisible image 7 Center line 8 Illumination light source 9 Viewpoint A Image line a Image line B Image line b Image line C Image line c1 Image line c2 Image line c3 Image line c4 Image Line c5 Image line D Pattern E Image line L1 Line L2 Line L3 Line L4 Line L5 Line L6 Line L7 Line L8 Line L9 Line

Claims (13)

A plurality of units having a predetermined area are arranged on the base material,
The unit is arranged with at least two sets of latent image regions and visible image regions alternately along the first direction,
One of at least two sets of the latent image areas of each of the units has a first image area and a fourth image area;
The other latent image area has a second image area and a fourth image area,
The visible image area has a third image area arranged from one end to the other end in the longitudinal direction of the unit;
The latent image area in each of the units has the first image area and the second image area turned on and off, and when one of the image lines is formed, the other image area is formed. The line is formed as a unit that is not formed, or is formed as the unit that does not form both the first image line and the second image line,
The first drawing line and the second drawing line have the same area;
Either the positive image or negative image of the first invisible image is formed by the first image line, and the other of the negative image or positive image of the first invisible image is formed by the second image line. ,
When two or three units adjacent to each other along the first direction are arranged such that the distance to the adjacent first image line or the second image line is more than a predetermined distance. In addition, adjacent to the fourth image area or the second image area adjacent to the first image area sandwiched between the adjacent first image line or the second image line. In the fourth image area, a fourth image line having the same color as the half of the first image line and the second image line is formed,
A forgery-preventing printed matter, wherein a visible image is formed by forming the third image line in the third image area.   The predetermined distance is a distance from one of the first image area disposed in the two units adjacent to each other along the first direction to the other first image area. 2. The printed matter for preventing forgery according to claim 1.   2. The visible image of continuous tone is formed on the third image line by at least one method selected from the size of the image line, the density of the image line, and the density of the image line. Or the forgery prevention printed matter of 2.   The forgery prevention printed matter according to any one of claims 1 to 3, wherein the third image line includes image lines of at least two colors.   5. The forgery-preventing printed matter according to claim 1, wherein a length of one side of the unit is 1 mm or less. The first image line, the second image line, the third image line, and the fourth image line are printed with ink containing a glittering material,
A desired pattern is formed by solid printing using a colorless transparent material on at least a part of the first image line, the second image line, the third image line, and the fourth image line. The printed matter for preventing forgery according to any one of claims 1 to 5. A plurality of units having a predetermined area are arranged on the base material,
The unit has at least four sets of latent image areas and visible image areas alternately arranged in the first direction,
At least four sets of the latent image areas in each of the units include a first latent image area formed by at least two sets of the latent image areas forming a first invisible image, and a second invisible image. A second latent image area formed by at least two sets of the latent image areas to be formed;
One of at least two sets of the latent image areas of the first latent image area has a first image line area and a fourth image line area, and the other has a second image line area and the fourth image line area. With a line area
One of at least two sets of the latent image regions of the second latent image region has a fifth image line region and a seventh image line region, and the other has a sixth image line region and the seventh image line region. With a line area
The visible image area has a third image area arranged from one end to the other end in the longitudinal direction of the unit;
When the first latent image area in each of the units is formed with either the first image area and the second image area on or off, and one of the image lines is formed, The other image line is formed as the unit that is not formed, or formed as the unit that does not form both the first image line and the second image line,
When the second latent image area in each of the units is formed such that either the fifth image area or the sixth image area is on or off, and one of the image lines is formed, The other image line is formed as the unit that is not formed, or formed as the unit that does not form both the fifth image line and the sixth image line,
The first drawing line and the second drawing line have the same area;
The fifth drawing line and the sixth drawing line have the same area,
Either the positive image or negative image of the first invisible image is formed by the first image line, and the other of the negative image or positive image of the first invisible image is formed by the second image line. And
Either the positive image or negative image of the second invisible image is formed by the fifth image line, and the other of the negative image or positive image of the second invisible image is formed by the sixth image line. And
When two or three units adjacent to each other along the first direction are arranged such that the distance to the adjacent first image line or the second image line is more than a predetermined distance. In addition, adjacent to the fourth image area or the second image area adjacent to the first image area sandwiched between the adjacent first image line or the second image line. In the fourth image area, a fourth image line having the same color as the half of the first image line and the second image line is formed,
When two or three units adjacent along the first direction are arranged such that the distance to the fifth image line or the sixth image line adjacent to each other is more than a predetermined distance. The seventh image area adjacent to the fifth image area or the sixth image area sandwiched between the fifth image line or the sixth image line adjacent to the sixth image line area In the seventh image area, a seventh image line that is half the image area of the fifth image line and the sixth image line and has the same color is formed,
A forgery-preventing printed matter, wherein a visible image is formed by forming the third image line in the third image area.   The predetermined distance is a distance from one of the first image area disposed in the two units adjacent to each other along the first direction to the other first image area. The forgery-preventing printed matter according to claim 7.   8. The visible image having a continuous tone is formed on the third image line by at least one method selected from the size of the image line, the density of the image line, and the density of the image line. Or the printed matter for forgery prevention of 8.   The printed matter for preventing forgery according to any one of claims 7 to 9, wherein the third image line includes image lines of at least two colors.   11. The printed matter for preventing forgery according to claim 7, wherein a length of one side of the unit is 1 mm or less. The first image line, the second image line, the third image line, the fourth image line, the fifth image line, the sixth image line, and the seventh image line are: Printed with ink containing glitter material,
At least one of the first image line, the second image line, the third image line, the fourth image line, the fifth image line, the sixth image line, and the seventh image line. The forgery-preventing printed matter according to any one of claims 7 to 11, wherein a desired pattern is formed by solid printing on a part of the image line using a colorless and transparent material.   The hues of the first image line, the second image line, and the fourth image line are different from those of the fifth image line, the sixth image line, and the seventh image line. The forgery-preventing printed matter according to any one of claims 7 to 12.

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