JP2014205260A - Counterfeit prevented printed matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an invention related to a counterfeit prevented printed matter requiring counterfeit prevention or reproduction prevention such as securities including a bank note, a stock certificate and bonds, various certificate and important documents.SOLUTION: A counterfeit prevented printed matter with a visible image and multiple invisible images has at least: a visible image recognized visually when the printed matter is observed from a first observation angle; a first invisible image recognized visually when observed from a second observation angle; and a second invisible image observed by putting a distinction tool on the printed matter.

Description

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

  Conventionally, for securities such as banknotes, stock certificates, bonds, various certificates and important documents, it has been required to incorporate anti-counterfeiting technology as a technology to determine whether it is genuine or counterfeit. Yes. Typical examples of anti-counterfeiting technology include intaglio printing that prevents copying using a color copier, etc., with an image line having an ink swell, and latent image intaglio technology using the same (for example, patent documents) 1).

  This latent image intaglio is effective by using an image line having an ink swell. For example, as shown in the printed matter 1 in FIG. 20, the image line 5 and the background forming the latent image portion of the printed pattern 14 are used. The image lines 6 forming the part are arranged with the same image line width and image line pitch by two-line line-shaped image line groups having a difference of 90 degrees.

  When the printed pattern 14 is observed from the front (vertical direction), the image line 5 and the image line 6 are arranged with the same image line width and image line pitch, and thus are observed as a uniform density. The applied latent image pattern “P” cannot be easily recognized. On the other hand, as shown in FIG. 21, when the printed material is tilted and observed, the image lines 5 are arranged in a direction orthogonal to the angle at which the printed material 1 is inclined. Although the non-image area is concealed and has a high density, the image line 6 is arranged along the direction in which the printed material is inclined. Therefore, even if the printed material is inclined, the density of each non-image area does not change. As a result, the latent image pattern “P” appears as a visible image.

  Further, as another latent image intaglio technology, the latent image portion and the background portion can be formed by partially varying the height of the ink bulge instead of the two-line line-shaped image line group.

  As another forgery prevention technique, there is a technique in which an invisible image appears by overlapping a line filter in which a regular line pattern is formed on a transparent film and a discriminating tool such as a lenticular lens.

  As a technique in which an invisible image appears by overlaying this discriminator, the applicant of the present application can see a visible image when the printed material is visually observed and an invisible image that appears (appears) when the discriminator is superimposed. An application has been filed for printed matter in which images are switched (see, for example, Patent Document 2).

  In the printed matter of Patent Document 2, a plurality of first image-line elements arranged on and off so as to face each other with the center as a boundary are regularly arranged along a certain direction to be first invisible. A plurality of second line elements that form an image and have a similar relationship are arranged in a similar configuration to form a second invisible image. The first line element and the second line element are A third image line element that forms a visible image is arranged at a position that is arranged at a different angle on the same region and overlaps a part of each image line element. In the technique of Patent Document 2, only a visible image is visually recognized, and a positive image or a negative image of the first invisible image appears from the first image element by overlapping the discriminating tool, and the second image line. A positive or negative image of the second invisible image appears from the element.

  Furthermore, the present applicant has applied for a printed matter in which the second effect of causing an invisible image to appear by overlaying a discriminator on the latent image intaglio of Patent Document 1 described above (see, for example, Patent Document 3). ).

  In the printed matter of Patent Document 3, the latent image pattern appears when the printed matter is observed at an angle by providing a latent image portion and a background portion with different ink rising heights on the line pattern forming the latent image intaglio. Furthermore, by forming an invisible image with an image line whose phase is modulated in an area other than the line pattern of the latent image intaglio, an invisible image appears when the discriminator is overlapped.

Japanese Patent Publication No. 56-19273 Japanese Patent No. 4635160 Japanese Patent No. 4931265

  However, when the printed matter of Patent Document 1 is observed at an inclination, the latent image pattern can be visually recognized by the difference in density between the latent image portion and the background portion, but it is true / false determination based on only a simple density difference. Therefore, more advanced anti-counterfeiting technology has been demanded.

  Moreover, although the printed matter of Patent Document 2 is excellent in the effect that an invisible image appears by a discriminator, when the printed matter is copied by a copying machine such as a color copier, the same effect can be reproduced by the copied matter. Therefore, there remains a problem that the anti-counterfeiting effect on copying is poor.

  Furthermore, since the printed matter of Patent Document 3 includes a latent image pattern that is visible when the printed matter is observed while being tilted and an invisible image that appears when the discriminator is overlapped, it is an advanced anti-counterfeiting technology. However, since the latent image part and the background part are formed by partially varying the height of the ink rise in the image line, depending on the manufacturing conditions such as the intaglio plate surface, the intaglio ink, and the printing speed, There remains a manufacturing problem that it is difficult to reproduce the proper height of ink swell.

  The present invention is intended to solve the above-described problem, and forms a latent image intaglio by image lines in different directions in the latent image portion and the background portion, and further forms a latent image intaglio. The present invention relates to a forgery-preventing printed matter in which an invisible image that appears by overlapping a discriminator is formed in a region other than.

  The anti-counterfeit printed matter of the present invention is an anti-counterfeit printed matter in which an image region having a first invisible image and a second invisible image is formed on at least a part of a substrate, and the image region includes a plurality of units. Are arranged regularly in a matrix, and each of the plurality of units includes a first element in which a raised element is arranged at a position including the center of the unit along the first direction, A first invisible image is formed by selectively disposing one of the second elements disposed at a position including the center of the unit along a second direction different from the direction, and the first direction A third invisible image is formed by the third element and the fourth element arranged so as to be opposed to the center of the unit along a third direction different from the second direction, and the third element And the fourth element is on and off The area ratio and color are the same, the third element forms a positive image or negative image of the second invisible image, and the fourth element forms a negative image or positive image of the second invisible image This is a forgery-preventing printed matter characterized in that is formed.

  The unit in the forgery-preventing printed matter of the present invention is a forgery-preventing printed matter in which a fifth element is further arranged and a visible image is formed by the fifth element.

  The forgery-preventing printed matter of the present invention includes a unit having a third element arranged as off and a fourth element arranged as off in each of the units arranged in the third direction. When the off part of the unit is adjacent, a third element or a sixth element having a half area ratio of the fourth element is arranged between the third element and the fourth element arranged as off. In each unit, when the third element and the fourth element are arranged off, the third element or the seventh element having an area ratio half that of the fourth element is arranged in the center of the unit. This is a forgery-proof printed matter characterized by that.

  The anti-counterfeit printed matter of the present invention is an anti-counterfeit printed matter in which an image region having a first invisible image, a second invisible image, and a third invisible image is formed on at least a part of a substrate. In the image area, a plurality of units are regularly arranged in a matrix, and each of the units arranged in a plurality is arranged in a position where an element having a bulge is arranged at a position including the center of the unit along the first direction. The first invisible image is obtained by selectively disposing one of the first element and the second element disposed at a position including the center of the unit along a second direction different from the first direction. The second invisible image is formed by the third element and the fourth element that are formed so as to face the center of the unit along a third direction different from the first direction and the second direction. Formed in the third direction and A third invisible image is formed by the eighth element and the ninth element arranged to face the center of the unit along the intersecting fourth direction, and the third element and the fourth element Are on and off, arranged in the same area ratio and color, the third element forms a positive or negative image of the second invisible image, and the fourth element forms the second invisible image. A negative image or a positive image is formed, the eighth element and the ninth element are in an on-off relationship, the area ratio and the color are arranged to be the same, and the eighth element is a positive image of the third invisible image Alternatively, the forgery-preventing printed matter is characterized in that a negative image is formed and a negative or positive image of the third invisible image is formed by the ninth element.

  The forgery-preventing printed matter of the present invention includes a unit having a third element arranged as off and a fourth element arranged as off in each of the units arranged in the third direction. When the off part of the unit is adjacent, a third element or a sixth element having a half area ratio of the fourth element is arranged between the third element and the fourth element arranged as off. In each unit arranged in a plurality along the fourth direction, when the off portion of the unit having the eighth element arranged off and the unit having the ninth element arranged off are adjacent to each other, Between the eighth element and the ninth element arranged as off, a sixth element having an area ratio half that of the eighth element or the ninth element is arranged, and in each unit, the third element Elements and When the four elements are arranged off, the third element or the seventh element having an area ratio half that of the fourth element is arranged at the center of the unit, and in each unit, the eighth element and the eighth element are arranged. When the nine elements are arranged off, the eighth element or the seventh element having an area ratio half that of the ninth element is arranged in the center of the unit.

  The forgery-preventing printed matter of the present invention is a forgery-preventing printed matter characterized in that the angle difference between the first direction and the second direction is 90 ± 15 °.

  Further, the forgery-preventing printed matter of the present invention is the first direction and the third direction, the second direction and the third direction, the first direction and the fourth direction, and the second direction and the fourth direction. It is an anti-counterfeit printed matter characterized in that each angle difference is 45 ± 10 °.

  The forgery-preventing printed matter of the present invention is a forgery-preventing printed matter characterized in that the area ratio and color of the third and fourth elements, and the eighth and ninth elements are the same.

  In addition, the forgery-preventing printed matter of the present invention is a forgery-preventing printed matter characterized in that the arrangement pitch in the plurality of units is 1 mm or less.

  Furthermore, the first element and the second element in the anti-counterfeit printed matter of the present invention are anti-counterfeit printed matters formed by any one selected from intaglio printing, screen printing, and inkjet printing.

  The anti-counterfeit printed material of the present invention is a first invisible image and a second invisible image provided in a part of the printed material such as banknotes, stock certificates, securities such as bonds, various certificates and important documents. The images appear in different authenticity determination methods, that is, different effects can be given to the case where the discriminator is not used and the case where the discriminator is used. Stepwise and advanced authenticity determination means can be provided.

  The first invisible image is formed so as not to impair the design of the printed material when observed from the front, but has an effect of appearing as a first invisible image by observing the printed material at an angle, and Since an image line having an ink swell is arranged, authenticity can be determined based on the presence or absence of finger sensitivity.

  On the other hand, since the second invisible image is in a state in which the second invisible image is difficult to be visually recognized by an image line configuration for alleviating the density imbalance, in a forger who does not have a discriminator, There is an effect that it is difficult to grasp the presence of the second invisible image and it cannot be easily duplicated.

  Furthermore, as in the above-mentioned Patent Document 3, it is not necessary to form the first invisible image by changing the height of the rising of the ink, so that the manufacturing problem is eliminated.

The figure which shows the 1st invisible image 10 which appears when the printed matter 1 is observed by inclining, and the 2nd invisible image 11 which appears when the discriminator 2 is observed while being superimposed on the printed matter 1. The figure which shows an example of the forgery prevention printed matter of this invention The figure which shows the unit of the minimum unit in 1st Embodiment. Diagram showing a state in which multiple units are regularly arranged in a matrix An image that is visually recognized when the printed matter 1 in the first embodiment is observed from the front, a first invisible image 10 that appears when the printed matter 1 is observed while being tilted, and the discriminator 2 are superimposed on the printed matter 1. The figure which shows the 2nd invisible image 11 which appears when it observes The figure which shows the unit of the minimum unit in 2nd Embodiment. The figure which shows the visible image 13 visually recognized when the printed matter 1 in the second embodiment is observed from the front, and the units where the image lines 7 are arranged are arranged in a matrix, so that the image area 4 The figure which shows the state in which the visible image 13, the 1st invisible image 10, and the 2nd invisible image 11 were formed. The visible image 13 that is visible when the printed matter 1 in the second embodiment is observed from the front, the first invisible image 10 that appears when the printed matter 1 is observed while being tilted, and the discriminator 2 on the printed matter 1. The figure which shows the 2nd invisible image 11 which appears when it observes in piles The figure which shows the unit of the minimum unit in 3rd Embodiment. Flowchart showing an algorithm for deleting and adding streaks to alleviate visual density imbalance The figure which shows the state from which the drawing line A '[v] of unit [v] was deleted according to the algorithm of FIG. The figure which shows the state to which the drawing line a and the drawing line e which have the area ratio of the half of drawing line A or drawing line A 'were added according to the algorithm of FIG. The figure which shows the state which the image line A located in the centerline 8 expanded according to the characteristic of a lenticular lens, and the 2nd invisible image 11 appeared The figure which shows the unit of the minimum unit in 4th Embodiment The figure which shows the state in which the 2nd invisible image 11 and the 3rd invisible image 12 were formed because the several unit was regularly arranged in matrix form. Flowchart showing an algorithm for deleting and adding streaks to alleviate visual density imbalance FIG. 10 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. 10, and the image line B ′ [h] of the unit [h] is deleted according to the algorithm of FIG. Diagram showing state FIG. 10 is a diagram showing a state in which an image line a and an image line e having a half area ratio of the image line A or the image line A ′ are added according to the algorithm of FIG. 10, and an image line B or image line according to the algorithm of FIG. The figure which shows the state to which the drawing line b and the drawing line e which have the area ratio of the half of B 'were added The figure which shows the state by which the imbalance of the density | concentration of the drawing area | region 4 which comprises the 2nd invisible image 11 and the 3rd invisible image 12 was eased by performing both the algorithm of FIG. 10 and the algorithm of FIG. Figure when observing the printed surface with latent image intaglio from the front Image when the printing surface with latent image intaglio is tilted and observed

  Embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments to be described below, and includes various other embodiments within the scope of the technical idea described in the claims.

  The anti-counterfeit printed matter (hereinafter referred to as “printed matter”) in the first to fourth embodiments of the present invention is regularly arranged when the printed matter 1 is observed as tilted as shown in FIG. The image line 5 and the image line 6 having a raised ink cause a partial density change, and the first invisible image 10 such as an arbitrary figure or character appears, so that it can be used as authenticity determination means. .

  Further, as shown in FIG. 1B, the discriminating tool 2 is superimposed on the printed matter 1 so that the second invisible image 11 appears and can be used as a further authenticity discrimination means. The discriminator 2 is a line filter, a lenticular lens, or the like in which a plurality of straight lines are regularly arranged in a line on a transparent support.

(First embodiment)
The printed matter 1 in the first embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows a printed matter 1 according to the first embodiment of the present invention, which includes an image region 4 in which a plurality of invisible images are formed on at least a part of a base material 3, and the image region 4 is The first invisible image 10 and the second invisible image 11 are formed by regularly arranging units in which a plurality of elements forming the invisible image are arranged in a matrix.

  FIG. 3 shows a unit of the minimum unit in the first embodiment. The image line 5 is arranged at a position including the center of the unit along the first direction, and the image line 6 is the second unit. The image line A and the image line A ′ are disposed along the third direction so as to face the center of the unit along the boundary. The dimensions S1 and S2 of each unit are 1 mm or less, for example, 340 μm.

  The image line 5 and the image line 6 are arranged with the same area ratio and the same color by the image line having an ink swell, and by selecting either the image line 5 or the image line 6 in each unit, A first invisible image 10 is formed which is visually recognized when the printed matter 1 is tilted and observed. In the first embodiment, the latent image portion of the first invisible image 10 is formed by the set of the image lines 5 arranged along the first direction, and arranged along the second direction. A background portion of the first invisible image 10 is formed by the set of the drawn lines 6.

  In addition, the image line A and the image line A ′ of each unit are arranged with the same area ratio and the same color in an on-off relationship with each other. This ON / OFF relationship is a relationship in which one of the lines is arranged (ON) and the other is arranged (OFF). In principle, both lines are arranged (ON). ) Or an image line is not placed (off).

  By selectively disposing the image line A and the image line A ′, the second invisible image 11 that appears when the discriminator is overlapped and observed is formed. In each unit, the same area ratio is obtained. Since any one of the image line A and the image line A ′ having the same color is arranged, the density is visually recognized as a uniform state without causing a density difference in the image region 4. Two invisible images 11 can be made invisible. In FIG. 3, for convenience of explanation, the unit in which the image line 5 and the image line 6 are arranged and the unit in which the image line A and the image line A ′ are arranged are shown separately. One of the image line 5 and the image line 6 and either one of the image line A or the image line A ′ are arranged in the same unit.

  FIG. 4 shows a state in which the units having the above-described configuration are continuously and regularly arranged in the image area 4, and the latent image portion of the first invisible image 10 is formed by the set of the image lines 5. The background portion of the first invisible image 10 is formed by the set of the drawing lines 6.

  Further, a positive image or negative image of the second invisible image 11 is formed by the image line A, and a negative image or positive image of the second invisible image 11 is formed by the image line A ′. 4 shows a state in which “P” that is the first invisible image 10 is visually recognized and a state in which “A” that is the second invisible image 11 has appeared. When the first invisible image 10 is visually recognized and the center line 8 of the lenticular lens as the discriminator 2 is superimposed on the line L1 or the line L2 of the unit shown in FIG. A positive image or a negative image of the invisible image 11 appears.

  In the first embodiment, each unit is inclined by 45 °, and the image line 5 is arranged with the relationship connecting the diagonals of the horizontal direction (0 °) of each unit as the first direction. The image line 6 is arranged with the relationship connecting the diagonals of the vertical direction (90 °) orthogonal to the direction 1 as the second direction. In addition, the image line A and the image line A ′ are arranged with the first direction as a reference and the relationship of 45 ° that is an intermediate between the first direction and the second direction as a third direction.

  Since the first direction, the second direction, and the third direction need to be formed without impairing the visibility of the first invisible image 10 and the second invisible image 11, the first direction, The angle difference in the second direction needs to be 90 ± 15 °. When the angle difference between the first direction and the second direction is 90 ± 16 ° or more, the amount of the non-image area hidden by the image line 5 or the image line 6 when the printed matter 1 is observed with the tilt is observed. Since the non-image portion that becomes the background portion is partially concealed, the density in each non-image portion approaches and the density for making the first invisible image 10 visible is insufficient. Therefore, it is not preferable. A more preferable form for improving the visibility of the first invisible image 10 is a form in which the angle difference between the first direction and the second direction is close to 90 °, and thus the first direction and the second direction. The angle difference in the direction is preferably 90 ± 5 °.

  In addition, the angle difference between the first direction, the second direction, and the third direction needs to be 45 ± 10 °. When the angle difference between the directions becomes 45 ± 11 ° or more, the image line 5 or the image line 6 interferes with the direction of the line L1 or the direction of the line L2 forming the second invisible image 11, Since the visibility when the second invisible image 11 appears is lowered, it is not preferable.

  Next, the image observed in the printed matter 1 in the first embodiment will be described with reference to the drawings. FIG. 5A shows a state in which the printed matter 1 is observed from the front, because the image line 5 or the image line 6 and the image line A or the image line A ′ are arranged in each unit. , The density is visually recognized as a uniform state. FIG. 5B shows a state where the printed matter 1 is observed while being tilted, and the image line 5 is arranged along a direction orthogonal to the angle at which the printed matter 1 is tilted. The non-image portion in the vicinity is concealed by the image line 5 having a swell, and is visually recognized as a high density. On the other hand, since the image line 6 is arranged along the direction in which the printed material 1 is inclined, the image line 6 does not hide the non-image area in the vicinity, and is observed at the same density as observed from the front. Therefore, a density difference occurs between the unit in which the image line 5 is arranged and the unit in which the image line 6 is arranged, and “P” that is the first invisible image 10 is visually recognized.

  FIG. 5C shows a second invisible image 11 that appears by overlaying the discriminator 2 on the printed matter 1 in the first embodiment, and the center of the lenticular lens on the line L1 in each unit. By observing the line 8 in an overlapping manner, only the image line A in each unit is selectively enlarged, and a positive image “A” that is the second invisible image 11 appears. Further, by observing the center line 8 of the lenticular lens on the line L2 in each unit, only the image line A ′ in each unit is selectively enlarged, and the second invisible image 11 “A” is displayed. Negative image (not shown) appears.

(Second Embodiment)
The printed matter 1 in the second embodiment will be described with reference to the drawings. In addition, since the structure of the image line 5, the image line 6, the image line A, and the image line A 'arrange | positioned at each unit in 2nd Embodiment is the structure similar to 1st Embodiment, Description is omitted.

  The printed matter 1 in the first embodiment includes the image line 5 or the image line 6 having the same area ratio and the same color, and the image line A or the image line A ′ having the same area ratio and the same color. Since the units are arranged in a matrix, when the printed material 1 is observed from the front, the density is visually recognized as a uniform state without causing a difference in density in the image line region 4. In the printed matter 1 in the form, a visible image 13 that is visible when the printed matter 1 is observed from the front is formed by arranging the image line 7 shown in FIG.

  FIG. 6 shows a unit of the minimum unit in the second embodiment, and an image line 7 is arranged in an area where the image line 5 and the image line 6 do not exist. In the second embodiment, the image line 7 is arranged at a position adjacent to the image line 5 and the image line 6. However, if the image line 5 and the image line 6 do not exist, other areas An image line 7 can be arranged. In FIG. 6, for convenience of explanation, the unit in which the image line 5, the image line 6 and the image line 7 are arranged, and the unit in which the image line A and the image line A ′ are arranged are shown as separate units. However, in actuality, one of the image line 5 and the image line 6, one of the image line A and the image line A ′, and the image line 7 are arranged in the same unit. In FIG. 6, the image line 7 is arranged in a region adjacent to both the image line 5 and the image line 6, but in actuality, either the image line 5 or the image line 6 is used in each unit. Since one is arranged, only the image line 7 adjacent to the arranged image line 5 or 6 is arranged.

  FIG. 7A shows the printed matter 1 in the second embodiment, in which an image region in which a visible image 13, a first invisible image 10, and a second invisible image 11 are formed on a substrate 3 is shown. 4 is provided. FIG. 7B shows a state in which the units shown in FIG. 6 are continuously and regularly arranged in the image area 4 and is visually recognized when the printed matter 1 is observed from the front by the image line 7. The visible image 13 to be formed is formed. FIG. 7B shows a state in which “P” that is the first invisible image 10 is visually recognized and a state in which “A” that is the second invisible image 11 has appeared. When the printed matter 1 is observed from the front, only the visible image 13 is visually recognized, and the first invisible image 10 and the second invisible image 11 are not visually recognized.

  FIG. 8 shows a state in which different images appear for the printed matter 1 according to the second embodiment depending on the observation method. FIG. 8A shows a state in which the printed matter 1 is observed from the front. As shown in FIG. 8A, the printed matter 1 according to the second embodiment has the image line 5 or the image line 6, the image line A or the image line A ′, and the image line 7 arranged in each unit. However, since the density of the image line 5, the image line 6, the image line A, and the image line A ′ is uniform in each unit, only the unit having the image line 7 is partially high in density and visible. The image 13 is visually recognized.

  FIG. 8B shows a state where the printed matter 1 is observed while being tilted, and the image line 5 is arranged along a direction orthogonal to the angle at which the printed matter 1 is tilted. The non-image portion in the vicinity is concealed by the image line 5 having a swell, and is visually recognized as a high density. On the other hand, since the image line 6 is arranged along the direction in which the printed material 1 is inclined, the non-image area near the image line 6 is not concealed and is observed at the same density as that observed from the front. Therefore, a density difference occurs between the unit in which the image line 5 is arranged and the unit in which the image line 6 is arranged, and “P” that is the first invisible image 10 is visually recognized.

  FIG. 8C shows a second invisible image 11 that appears by overlaying the discriminator 2 on the printed matter 1 in the second embodiment, and a lenticular lens on the line L1 in each unit. When the center line 8 is overlapped, only the image line A in each unit is selectively enlarged, and a positive image “A” that is the second invisible image 11 appears. Further, by observing the center line 8 of the lenticular lens on the line L2 in each unit, only the image line A ′ in each unit is selectively enlarged, and the second invisible image 11 “A” is displayed. Negative image (not shown) appears.

(Third embodiment)
A printed matter 1 in the third embodiment will be described with reference to the drawings. The printed matter 1 according to the third embodiment arranges a new image line in order to eliminate the problem that the second invisible image 11 is slightly visualized in the printed matter 1 according to the first and second embodiments. To do. Note that the image line 5, the image line 6, and the image line 7 to be arranged in the third embodiment are the same as those in the first embodiment and the second embodiment, and thus description thereof is omitted.

  A plurality of units arranged with the drawing line A turned on and a plurality of units arranged with the drawing line A ′ turned on are arranged in a matrix so that the drawing line arranged with the two adjacent units turned on. Since the relationship between A ′ and the image line A is close, that is, the image line A ′ is arranged in the upper left unit and the image line A is arranged in the lower right unit, the density of the adjacent portion is relatively It looks dark. Also, the relationship between the image line A ′ and the image line A arranged adjacent to each other in two adjacent units, that is, the image line A ′ in the upper left unit is turned off and the image line in the lower right unit is turned off. When A is turned off, density imbalance may occur visually, such as the density of adjacent parts of the unit appearing relatively light.

  In FIG. 9, the image line a and the image line e are arranged in the unit of the minimum unit in order to alleviate this density imbalance. The image line a and the image line e are arranged along the direction in which the image line A and the image line A ′ of the unit are arranged. The line a and the line e are arranged in accordance with the conditions of the line A and the line A ′ arranged in each unit arranged in a matrix according to the algorithm shown in FIG. The image line is deleted and added every [v]. [V] indicates the number of steps obtained by counting units from the upper left to the lower right.

  First, in the process f1, the image line A [v] and the image line A ′ [v] are sequentially detected in the units [v] arranged in a matrix. Note that the method of detecting the image line A [v] and the image line A ′ [v] is, for example, when the image forming the invisible image 11 is in the bitmap format, the image line A is processed by a process generally called labeling. [V] or image line A ′ [v] may be identified.

  Next, in the process f2, when the condition 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] originally arranged in the unit [v] 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 image line A ′ [v] and the image of the unit [v + 1] of the unit [v] are displayed. When the 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 the process f4.

  Next, in the 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] [v + 1] is added in the unit [v]. That is, as shown in FIG. 12B, an image line a [v] [v + 1] having an area ratio half that of the image line A or the image line A ′ is between the unit [v] and the unit [v + 1]. Added. Thereby, the visual density imbalance between the unit [v] and the unit [v + 1] is alleviated. In the present invention, the half area ratio includes about half the area ratio.

  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. 12C, an image line e [v + 1] having an area ratio half that of the image line A or the image line A ′ is added at a position including the center of the unit [v + 1]. Thereby, the visual imbalance in density between the unit [v] and the unit [v + 2] is alleviated.

  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 conditions are met, in process f9, the image line e [v + 1] and the image line a [[] are drawn between the image line A ′ [v] of the unit [v] and the image line A ′ [v + 2] of the unit [v + 2]. v + 1] [v + 2] are added. That is, as shown in FIG. 12D, an image line e [v + 1] having an area ratio half that of the image line A or the image line A ′ is added at a position including the center of the unit [v + 1], and the unit [ The image line a [v + 1] [v + 2] having an area ratio half of the image line A or the image line A ′ between the image line A [v + 1] of the v + 1] and the image line A ′ [v + 2] of the unit [v + 2]. Is added. Thereby, the visual imbalance in density between the unit [v] and the unit [v + 2] is alleviated.

  In this state, the second invisible image 11 applied to the image region 4 can appear by superimposing the discriminator 2 on the printed matter 1.

  As shown in FIG. 13, the center line 8 of each lens of the lenticular lens is placed at a predetermined position on the printed material so as to coincide with the center of the image line A, that is, the line L1 in FIG. In this case, as shown in FIG. 13, the image line A is enlarged by the action of the lenticular lens, so that the second invisible image 11 constituted by the image line A can appear. At that time, the image line 5 and the image line 6 constituting the first invisible image 10 and the image line 7 constituting the visible image 13 do not coincide with the center line 8 of each lens of the lenticular lens, and therefore are visually recognized. There is no. Thereby, the visible image 13 shown to Fig.8 (a) switches to the 2nd invisible image 11 as shown in FIG.8 (c). Further, when the center line 8 of each lens of the lenticular lens is moved so as to coincide with the line L2 in FIG. 9 so that the image line A ′ is enlarged, the negative image of the invisible image 11 by the image line A ′. (Not shown) appears.

(Fourth embodiment)
A printed matter 1 in the fourth embodiment will be described with reference to the drawings. FIG. 14 shows a unit of the minimum unit in the fourth embodiment. As a configuration different from the printed matter 1 in the first to third embodiments, the angle at which the discriminating tool 2 is overlapped is changed. The image line B and the image line B ′ for causing the 3 invisible images 12 to appear are arranged.

  In the unit of the minimum unit shown in FIG. 14, an image line A and an image line A ′ that form the second invisible image 11 and an image line B and an image line B ′ that form the third invisible image 12 are arranged. Two different invisible images appear by changing the angle at which the tools 2 are overlapped. The units shown in FIG. 14 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 ′ are paired and are in an on-off relationship with each other. The image area A and the image line A ′ have the same area ratio, and the image line B and the image line B ′ have the same area ratio. Due to the presence of the image line A or image line A ′ and the image line B or image line B ′, the second invisible image 11 and the third invisible image 12 are not visually recognized under normal visibility conditions. The second invisible image 11 (positive image or negative image) is formed only by the image line A, the second invisible image 11 (negative image or positive image) is formed only by the image line A ′, and only the image line B is formed. Thus, the third invisible image 12 (positive image or negative image) and the third invisible image 12 (negative image or positive image) are formed only by the image line B ′.

  When units having such a configuration are arranged continuously and regularly on the printed matter 1 in a matrix without vertical and horizontal gaps, FIG. 15 is obtained. This FIG. 15 shows two units so that the configurations of a plurality of units arranged in a matrix with a step number [h] and a step number [v] and the second invisible image 11 and the third invisible image 12 can be understood. FIGS. 15A and 15B are schematic diagrams simply showing a portion where an invisible image is formed with diagonal lines, and FIGS. 15A and 15B illustrate that two invisible images are formed in the same print region 4. FIG. FIG. The oblique lines indicating the second invisible image 11 and the third invisible image 12 are for explaining the positions where the two invisible images are formed. Actually, FIG. 15A and FIG. As in (b), the second invisible image 11 and the third invisible image 12 are not visually recognized.

  In this state, a plurality of units arranged with the line A turned on when visually recognized and a plurality of units arranged with the line A ′ turned on are arranged in a matrix, so that the two adjacent The relationship between the image line A ′ and the image line A arranged as ON in one unit, that is, the image line A ′ is arranged in the upper left unit and the image line A is arranged in the lower right unit. As a result, the density of the adjacent portion appears relatively high. Similarly, a plurality of units arranged with the image line B turned on and a plurality of units arranged with the image line B ′ turned on are arranged in a matrix so that the two adjacent units are arranged on. Since the image line B ′ and the image line B are close to each other, that is, the image line B ′ is arranged in the lower left unit and the image line B is arranged in the upper right unit, the density of the adjacent portion is reduced. It looks relatively dark.

  In addition, the relationship between the image line A ′ and the image line A arranged adjacent to each other in two adjacent units, that is, the image line A ′ in the upper left unit is turned off, and the image in the lower right unit is displayed. When line A is turned off, the density of adjacent parts of the unit appears relatively light. Similarly, the relationship between the image line B ′ and the image line B arranged as being off in two adjacent units, that is, the image line B ′ in the lower left unit is turned off, and the image in the upper right unit is turned off. When the line B is turned off, there may be a density imbalance when visually observed such that the density of adjacent portions of the unit looks relatively light.

  In FIG. 14, the image line a, the image line e, and the image line b are arranged in order to alleviate this density imbalance. The drawing line a is arranged along the direction in which the unit drawing line A and drawing line A ′ are arranged, and the drawing line b is arranged along the direction in which the unit drawing line B and drawing line B ′ are arranged. The image line e is arranged along both directions.

  In order to alleviate this density imbalance, the image A and the image A ′ forming the second invisible image 11 are processed according to the algorithm shown in FIG. 10 to form the third invisible image 12. The processing for the line B and the image line B ′ is performed according to the algorithm shown in FIG. 16, and the image line is deleted and added for each unit [h, v] of the minimum unit. [V] is the number of steps when the unit is counted from the upper left to the lower right, and [h] is the number of steps when the unit is counted from the lower left to the upper right.

  First, in the process f1 shown in FIG. 10, the image line A [v] and the image line A ′ [v] are sequentially detected in the units [v] arranged in a matrix, and the process f11 shown in FIG. In the unit [h], the image line B [h] and the image line B ′ [h] are sequentially detected. Note that the method of detecting the image line A [v], the image line A ′ [v], the image line B [h], and the image line B ′ [h] is, for example, the second invisible image 11 and the third invisible image. When the image forming the image 12 is in the bitmap format, the image line A [v] or the image line A ′ [v] and the image line B [h] or the image line B ′ [h] are generally processed by a process called labeling. ] May be identified and deleted.

  Next, in the process f2 shown in FIG. 10, when the unit [v] has the image line A ′ [v] and the unit [v + 1] has the image line A [v + 1], the process is performed. At f3, the image line A ′ [v] originally arranged in the unit [v] is deleted. That is, as illustrated in FIG. 17A, when the unit [v], the unit [v + 1], and the unit [v + 2] are arranged, the image line A ′ [v] and the image of the unit [v + 1] of the unit [v] are displayed. When the 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 the process f4.

  On the other hand, in the process f12 shown in FIG. 16, when the condition that the unit [h] has the image line B ′ [h] and the unit [h + 1] has the image line B [h + 1] is met, the process f13 Then, the image line B ′ [h] originally arranged in the unit [h] is deleted. That is, as shown in FIG. 17C, when the unit [h], the unit [h + 1], and the unit [h + 2] are arranged, the image line B ′ [h] of the unit [h] and the image of the unit [h + 1] are displayed. When the line B [h + 1] is adjacent, the image line B ′ [h] of the unit [h] is deleted as shown in FIG. If the condition of the process f12 is not met, the process proceeds to the process 14.

  Next, in the process f4 shown in FIG. 10, when the unit [v] has the image line A [v] and the unit [v + 1] has the image line A ′ [v + 1], the process is performed. At f5, the image line a [v] [v + 1] is added between the image line A [v] of the unit [v] and the image line A ′ [v + 1] of the unit [v + 1]. That is, as shown in FIG. 18B, between the image line A [v] of the unit [v] and the image line A ′ [v + 1] of the unit [v + 1], half of the image line A or the image line A ′. An image line a [v] [v + 1] having an area ratio of is added. Thereby, the visual density imbalance between the unit [v] and the unit [v + 1] is alleviated.

  On the other hand, in the process f14 shown in FIG. 16, when the condition is met that the unit [h] has the image line B [h] and the unit [h + 1] has the image line B ′ [h + 1], the process f15 Then, the image line b [h] [h + 1] is added between the image line B [h] of the unit [h] and the image line B ′ [h + 1] of the unit [h + 1]. That is, as shown in FIG. 18 (f), an image line b [h] [h + 1] having an area ratio half that of the image line B or the image line B ′ is intermediate between the unit [h] and the unit [h + 1]. Added. As a result, the visual density imbalance between the unit [h] and the unit [h + 1] is alleviated.

  Next, in process f6 shown in FIG. 10, 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]. ], The image line e [v + 1] in the unit [v + 1] is added in the process f7. That is, as shown in FIG. 18C, an image line e [v + 1] having an area ratio half that of the image line A or the image line A ′ is added at a position including the center of the unit [v + 1]. Thereby, the visual imbalance in density between the unit [v] and the unit [v + 2] is alleviated.

  On the other hand, in the process f16 shown in FIG. 16, the unit [h] has the image line B ′ [h], the unit [h + 1] has no image line, and the unit [h + 2] has the image line B [h + 2]. In the process f17, the image line e [h + 1] in the unit [h + 1] is added. That is, as shown in FIG. 18G, the image line e [h + 1] having an area ratio half that of the image line B or the image line B ′ is added at a position including the center of the unit [h + 1]. Thereby, the visual imbalance in density between the unit [h] and the unit [h + 2] is alleviated.

  Next, in process f8 shown in FIG. 10, 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 ′ [ When the condition having v + 2] is satisfied, in process f9, the image line e [v + 1] and the image line A ′ [v + 2] of the unit [v] and the image line A ′ [v + 2] of the unit [v + 2] The image line a [v + 1] [v + 2] is added. That is, as shown in FIG. 18 (d), an image line e [v + 1] having an area ratio half that of the image line A or the image line A ′ is added at a position including the center of the unit [v + 1]. An image line a [v + 1] [having an area ratio half that of the image line A or the image line A ′ is intermediate between the image line A [v + 1] of the unit [v + 1] and the image line A ′ [v + 2] of the unit [v + 2]. v + 2] is added. Thereby, the visual imbalance in density between the unit [v] and the unit [v + 2] is alleviated.

  On the other hand, in the process f18 shown in FIG. 16, the unit [h] has the image line B ′ [h], the unit [h + 1] has no image line, and the unit [h + 2] has the image line B ′ [h + 2]. ] In the process f19, the image line e [h + 1] and the image line between the image line B ′ [h] of the unit [h] and the image line B ′ [h + 2] of the unit [h + 2]. The line b [h + 1] [h + 2] is added. That is, as shown in FIG. 18 (h), an image line e [h + 1] having an area ratio half that of the image line B or the image line B ′ is added at a position including the center of the unit [h + 1]. An image line b [h + 1] [having an area ratio half of the image line B or the image line B ′ between the image line B [h + 1] of the unit [h + 1] and the image line B ′ [h + 2] of the unit [h + 2]. h + 2] is added. Thereby, the visual imbalance in density between the unit [h] and the unit [h + 2] is alleviated.

  Therefore, when the processing f4 to processing f8 in FIG. 10 and the processing f14 to processing f18 in FIG. 16 are applied to the printing area 4 in FIG. Imbalance is alleviated. In each unit, both the image line e that reduces the density in the direction of the image line A and the image line A ′ and the image line e that reduces the density in the image line B and the image line B ′ direction are arranged. In the case where not all of the drawing lines A, drawing line A ′, drawing line B and drawing line B ′ are arranged in each unit, the area ratio of the drawing line e is set to drawing line A, drawing line A ′. The disparity in density with the naked eye is further alleviated by arranging the image area B and the image area B ′ to be enlarged up to the same area ratio.

DESCRIPTION OF SYMBOLS 1 Printed matter 2 Discriminator 3 Base material 4 Image area 5 Image line 6 Image line 7 Image line 8 Center line 10 1st invisible image 11 2nd invisible image 12 3rd invisible image 13 Visible image 14 Print pattern A Image line A ′ image line B image line B ′ image line a image line b image line e image line L1 line L2 line L3 line L4 line E viewing direction

Claims (11)

An anti-counterfeit printed matter in which an image region having a first invisible image and a second invisible image is formed on at least a part on a substrate,
In the image area, a plurality of units are regularly arranged in a matrix,
Each of the plurality of units arranged has a second direction different from the first direction, and a first element in which a raised element is arranged at a position including the center of the unit along the first direction. The first invisible image is formed by selectively disposing one of the second elements disposed at a position including the center of the unit along the line,
The second invisible image is formed by a third element and a fourth element that are arranged to face the center of the unit along a third direction different from the first direction and the second direction. Formed,
The third element and the fourth element are in an on and off relationship, and are arranged with the same area ratio and color,
Forgery characterized in that a positive image or negative image of the second invisible image is formed by the third element, and a negative image or positive image of the second invisible image is formed by the fourth element. Prevent printed matter. The unit further includes a fifth element,
The forgery-proof printed matter according to claim 1, wherein a visible image is formed by the fifth element. In each of the units arranged in a plurality along the third direction, the unit having the third element arranged as off and the off part of the unit having the fourth element arranged as off Are adjacent to each other, the third element or the sixth element having an area ratio that is half that of the fourth element is disposed between the third element and the fourth element that are disposed as off. ,
In each of the units, when the third element and the fourth element are arranged off, a seventh area ratio having a half area ratio of the third element or the fourth element in the center of the unit. The anti-counterfeit printed matter according to claim 1, wherein the elements are arranged. An anti-counterfeit printed matter in which an image region having a first invisible image, a second invisible image, and a third invisible image is formed on at least a part on a substrate,
In the image area, a plurality of units are regularly arranged in a matrix,
Each of the plurality of units arranged has a second direction different from the first direction, and a first element in which a raised element is arranged at a position including the center of the unit along the first direction. The first invisible image is formed by selectively disposing one of the second elements disposed at a position including the center of the unit along the line,
The second invisible image is formed by a third element and a fourth element that are arranged to face the center of the unit along a third direction different from the first direction and the second direction. Formed,
The third invisible image is formed by the eighth element and the ninth element arranged so as to oppose the center of the unit along a fourth direction orthogonal to the third direction,
The third element and the fourth element are in an on and off relationship, and are arranged with the same area ratio and color,
The third element forms a positive image or negative image of the second invisible image, the fourth element forms a negative image or positive image of the second invisible image,
The eighth element and the ninth element are in an on and off relationship, and are arranged with the same area ratio and color,
The counterfeit characterized in that a positive image or a negative image of the third invisible image is formed by the eighth element, and a negative image or a positive image of the third invisible image is formed by the ninth element. Prevent printed matter. The unit further includes a fifth element,
The forgery prevention printed matter according to claim 4, wherein a visible image is formed by the fifth element. In each of the units arranged in a plurality along the third direction, the unit having the third element arranged as off and the off part of the unit having the fourth element arranged as off Are adjacent to each other, the third element or the sixth element having an area ratio that is half that of the fourth element is disposed between the third element and the fourth element that are disposed as off. ,
In each of the plurality of units arranged along the fourth direction, the unit having the eighth element arranged as off and the off portion of the unit having the ninth element arranged as off Are adjacent to each other, the sixth element having an area ratio half that of the eighth element or the ninth element is disposed between the eighth element and the ninth element which are arranged as being off. And
In each of the units, when the third element and the fourth element are arranged off, a seventh area ratio having a half area ratio of the third element or the fourth element in the center of the unit. Elements are placed,
In each of the units, when the eighth element and the ninth element are arranged off, the eighth element or the ninth element having an area ratio that is half that of the ninth element in the center of the unit. 7. The forgery-preventing printed matter according to claim 4, wherein 7 elements are arranged.   The forgery prevention printed matter according to claim 1, wherein an angle difference between the first direction and the second direction is 90 ± 15 °.   Each of the first direction and the third direction, the second direction and the third direction, the first direction and the fourth direction, and the second direction and the fourth direction. 8. The forgery-preventing printed matter according to claim 4, wherein the angle difference is 45 ± 10 °.   9. The forgery-preventing printed matter according to claim 4, wherein the third element and the fourth element, and the area ratio and color of the eighth element and the ninth element are the same.   The forgery-preventing printed matter according to any one of claims 1 to 0, wherein a pitch of the arrangement in the plurality of units is 1 mm or less.   The counterfeit according to claim 1, wherein the first element and the second element are formed by any one selected from intaglio printing, screen printing, and inkjet printing. Prevent printed matter.

Images