JP2007015120A - Antiforging image forming body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the effectiveness of an antiforging means by a method wherein a parallel line pattern sheet for actualizing an image (for judging the authenticity of a printing sheet) having at least two or several kinds of parallel line patterns is made to be indispensable to be formed by forming several kinds of latent image pictures by parallel line pattern consisting of several kinds of pitches of parallel line pattern and several kinds of running angles of parallel line pattern on the image forming sheet such as one printing sheet or the like. <P>SOLUTION: On the image forming sheet, latent image pictures G1, G2, G3, G4 or the like, each of which is made of one unit pixel among unit pixels g1, g2, g3, g4 or the like, each consisting of four square or rectangular minimum unit blocks among unit blocks b1, b2, b3, b4 or the like, which are formed one and the same shape by dividing the domain of a square or rectangular unit block B into m in column and n in rank, are formed. The actualization of image is realized by lying a parallel line pattern sheet for actualizing image, which is formed by forming on a transparent sheet the parallel line pattern consisting of parallel line pattern having the same pitch p and running angle θ of parallel line pattern as those of the parallel line pattern constituting the unit pixel among the unit pixels g1, g2, g3, g4 or the like, on the image forming sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an anti-counterfeit image forming body effective for preventing counterfeiting of securities such as gift certificates, admission tickets, stock certificates, and printing media such as product labels.

  Countermeasures against counterfeiting are essential for securities such as gift certificates, admission tickets, gold certificates, stock certificates, bonds, etc., and they have conventionally been read as electronic data mechanically and optically after use like gift certificates. Image formations that have been provided with anti-counterfeiting measures such as possible prints, prints that make counterfeiting and forgery more difficult and do not interfere with design and appearance, and prints that are difficult to duplicate with color copies, scanners, etc. Is widely used in the market.

  For image forming bodies that have been made with conventional anti-counterfeiting measures that make counterfeiting and forging more difficult and do not hinder the design and appearance, there are many striped parallel lines with the same pitch. ) Is used as a printed matter or the like.

  This line-based image forming body includes a line sheet for visualization (for authenticity determination) in which a pattern of lines with a predetermined pitch (hereinafter referred to as a line pattern) is formed on a transparent sheet, and an image (picture) A line image forming body (printed material, etc.) in which a visually unreadable latent image formed as a latent image by a line pattern having the same pitch as the line pattern is arranged in the area is specified as one set. The latent image is visualized by the line sheet for authenticity determination, and it is visually confirmed whether or not the visualized image is a true image. The line sheet for authenticity determination When there is no, the latent image of the line image forming body cannot be made visible visually.

  When the line sheet for authenticity determination and the line image forming body (for example, the line sheet on the line image forming body) are overlapped so that their line patterns are parallel to each other. The adjacent line parts in both line patterns are visible as an image part, the overlapping (overlapping) part is visible as a non-image part, and the latent image is visualized as a meaningful image, It is readable visually so that it can be checked for authenticity.

  However, the conventional line image forming body uses a single line pitch of one kind of pitch on an image forming sheet such as a single printing sheet, and gives a change according to several kinds of line angle. A latent image is formed using several types of configured line patterns, and there is only one type of line pattern on the line sheet for authenticity determination.

  In this way, since the line pitch of the latent image (latent image pattern) uses the same pitch, the latent image pattern can be easily seen through operations such as image enlargement, and the resistance to imitation is low. Met.

Below, the well-known patent document relevant to this invention is described.
JP 2004-174880 A JP 2004-174997 A JP 2004-20951 A

  The present invention has been made in view of such a problem, and is a forgery-preventing image forming body effective for preventing counterfeiting of securities such as gift certificates, admission tickets, stock certificates, and printing media such as product labels. Then, on a sheet for image formation such as a single printing sheet, several types of latent image images are formed with a line pattern configured using several types of line pitches and several types of line angles, The authenticity determination of the image forming body requires a line sheet for visualization (for authenticity determination) on which two or more types of line patterns are formed, thereby improving the effectiveness of anti-counterfeiting measures. There is.

  According to the first aspect of the present invention, the minimum unit blocks b1, b2, b3, b4,... Obtained by equally dividing the unit block B into m columns and n rows on the image forming sheet are each unit pixel. Latent image images G1, G2, G3, G4,... are formed as g1, g2, g3, g4,..., and the latent image images G1, G2, G3, G4,. Each unit pixel g1, g2, g3, g4,... Is a line pattern composed of a single line of one or more lines, and each of the pitches p1, p2, p3, p4,. Anti-counterfeiting constituted by any one of the line patterns among the different line patterns each constituted by a line having a line pitch p and angles θ1, θ2, θ3, θ4,. Each of which forms the latent image G1, G2, G3, G4,. Each unit line pattern composed of the same line pitch p and the line with the line angle θ is the same as the line pattern constituting the unit pixel g1, g2, g3, g4,. The latent image G1, G2, G3, G4,... Is visualized by superimposing the formed visualization line sheet on the anti-counterfeit image forming body. And an anti-counterfeit image forming body.

  In the invention according to claim 2 of the present invention, four minimum unit blocks b1, b2, b3, b4 obtained by equally dividing the inside of the unit block B into two columns and two rows on the image forming sheet are each set as one unit pixel g1. , G2, g3, and g4 are formed as latent image images G1, G2, G3, and G4, respectively. The unit pixels g1, g2, g3, and g4 that form the latent image images G1, G2, G3, and G4 are respectively A line pattern composed of one or more lines corresponding to one line, and each line pitch p of pitches p1, p2, p3, and p4 and angles of each line of angles θ1, θ2, θ3, and θ4 An anti-counterfeit image forming body composed of any one of the different line patterns composed of θ lines, each forming the latent image G1, G2, G3, G4. Line pattern constituting the one unit pixel g1, g2, g3, g4 A line sheet for visualization in which different line patterns composed of lines having the same line pitch p and line angle θ are formed on a transparent sheet on the image forming body for preventing forgery. An anti-counterfeit image forming body characterized in that the latent image G1, G2, G3, G4 is visualized by combining them.

  The invention according to claim 3 of the present invention is the anti-counterfeit image forming body according to claim 1 or 2, wherein the unit block B has a rectangular shape such as a square or a rectangle, a polygonal shape, a perfect circular shape, An anti-counterfeit image forming body having one of an elliptical shape and an elliptical shape.

  The invention according to claim 4 of the present invention is the anti-counterfeit image forming body according to any one of claims 1 to 3, wherein the minimum unit blocks b1, b2, b3, b4,. An anti-counterfeit image forming body having any one of a rectangular shape such as a square or a rectangle, a polygonal shape, a perfect circular shape, an elliptical shape, and an elliptical shape.

The invention according to claim 5 of the present invention is the anti-counterfeit image forming body according to any one of claims 2 to 4 and forms the four types of images G1, G2, G3, and G4, respectively. Each of the unit pixels g1, g2, g3, and g4 is constituted by a line having a pitch p of each of the pitches p1, p2, p3, and p4 and a line having an angle θ1, θ2, θ3, and θ4 each having a line angle θ. Of each line pattern, four different line patterns each composed of two line pitches p having different pitches p1 and p2 and two line angles θ having two angles θ1 and θ2 respectively. An anti-counterfeit image forming body constituted by the following: a line pattern that forms each of the unit pixels g1, g2, g3, and g4 that form the four types of latent image G1, G2, G3, and G4; It is composed of the same line pitch p and a line having a line angle θ, Four different types of line patterns, each consisting of two different types of pitches p1 and p2 with different pitches p1 and p2 and two different types of angles θ1 and θ2 with different line angles θ, Visualization line sheet formed by forming on one transparent sheet, or line image sheet for visualization formed by using two front and back surfaces respectively formed on two transparent sheets, or Four types of the latent image G1, G2, G3, G4 are formed by superimposing the image forming lines formed on four transparent sheets on the anti-counterfeit image forming body. Is a forgery-preventing image forming body characterized in that the image is visualized.

  The invention according to claim 6 of the present invention is the forgery-preventing image forming body according to any one of claims 1 to 5, and is configured by the lines having the line pitch p and the line angle θ. The line sheet for visualization in which different line patterns are formed on a transparent sheet is a forgery-preventing image forming body, wherein each different line pattern is formed on the same transparent sheet. .

  The invention according to claim 7 of the present invention is the forgery-preventing image forming body according to any one of claims 1 to 6, and is configured by the lines having the line pitch p and the line angle θ. Each of the line sheets for visualization in which different line patterns are formed on a transparent sheet is a forgery-preventing image forming body, wherein each different line pattern is formed on a separate transparent sheet. .

  An invention according to an eighth aspect of the present invention is the forgery-preventing image forming body according to any one of the second to seventh aspects, wherein the two line angles θ1 and θ2 are different. Then, by satisfying the conditions of θ1 (θ1 <180 °), θ2 = 180−θ1, and superimposing the front and back of the visualization line sheet on the anti-counterfeit image forming body, the latent image An anti-counterfeit image forming body characterized in that G1, G2, G3, and G4 are visualized.

  The invention according to claim 9 of the present invention is the anti-counterfeit image forming body according to any one of claims 1 to 8, wherein the latent image images G1, G2, G3, G4,. Forming a line sheet for visualizing the latent image images G1, G2, G3, G4,... A counterfeit-preventing image forming body characterized in that the difference in line pitch between patterns is 0.05 mm or more.

  The invention according to claim 10 of the present invention is the anti-counterfeit image forming body according to any one of claims 1 to 9, wherein the latent image images G1, G2, G3, G4,. A line sheet for visualizing the width difference of line drawing portions of the line pattern forming each unit pixel constituting each of the above and the latent image images G1, G2, G3, G4,. An image forming body for forgery prevention, characterized in that a difference in width of line drawing portions of each line pattern to be formed is 0.05 mm or more.

  The invention according to claim 11 of the present invention is the anti-counterfeit image forming body according to any one of claims 1 to 9, wherein each of the latent image images G1, G2, G3, G4,. Forming a line sheet for visualizing the difference between the line angles θ of the line patterns forming the unit pixels and the latent image images G1, G2, G3, G4,. A counterfeit-preventing image forming body characterized in that the difference in the line angle θ between the line patterns is 10 ° or more.

  The invention according to a twelfth aspect of the present invention is the anti-counterfeit image forming body according to any one of the first to eleventh aspects, wherein the latent image images G1, G2, G3, G4,. Each of the unit pixels g1, g2, g3, g4,... Forming a line pattern is a line pattern composed of a single line of one or more lines. It is.

  The invention according to claim 13 of the present invention is the anti-counterfeit image forming body according to any one of claims 1 to 12, wherein the latent image images G1, G2, G3, G4. Each of the lines constituting the line pattern of each unit pixel g1, g2, g3, g4... To be formed is any one of a continuous line, a dot line, a dotted line, and other intermittent lines. Or it is an image forming body for forgery prevention characterized by being 2 or more types.

  The anti-counterfeit image forming body of the present invention has several types of line patterns configured by using several types of line pitches and several types of line angles on an image forming sheet such as a single printing sheet. A latent image is formed as a latent image pattern, and the authenticity of the image forming body requires a line sheet for visualization (for authenticity determination) on which two or more types of line patterns are formed. This makes it possible to improve the effectiveness of anti-counterfeiting measures and is effective in preventing counterfeiting of securities such as gift certificates, admission tickets, stock certificates, and printing media such as product labels. It is effective as an image forming body for preventing forgery.

  In the forgery prevention image forming body of the present invention, the printing plate for printing the latent image is a printing plate obtained by synthesizing a line pattern with several types of latent image as latent image patterns. In the case of a four-color (multi-color) image forming body printed using four-color (multi-color) printing inks, images (characters) to be used as latent image images on four (multi-sheet) printing plates (Symbols, marks, drawings, patterns, etc.), the image is synthesized based on the regularity of the original plate to make the printing plate, and then the printing plate is made very complicated. Is extremely difficult.

  The anti-counterfeit image-forming body of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall plan view of the anti-counterfeit image-forming body of the present invention, and FIG. FIG. 1 (b) is a visual appearance plan view including four latent image images synthesized by wrapping, and the outline of one display area of each of the four latent image images synthesized is shown by a solid line. FIG.

  As shown in FIG. 1A, the anti-counterfeit image forming body of the present invention includes a plurality of individual latent image images synthesized on the image forming sheet S so as to overlap each other. G is formed.

  The anti-counterfeit latent image G including a plurality of individual latent images, as shown in the plan view showing the details of FIG. 1B, shows the outline of one display area of each latent image. As shown in FIG. 2, the image is composed of a plurality of latent image images, such as latent image images G1, G2, G3, G4,..., For example, four latent image images as shown in the figure.

  The types of image patterns (pictures, photographs, marks, characters, numbers, symbols, etc.) displayed as the latent image G1, G2, G3, G4,... Are not particularly limited. As shown in FIG. 1B, among the four latent images, the alphabet “A” is indicated as the image pattern indicated by the latent image G1, the English character “B” is indicated as the image pattern indicated by the latent image G2, The letter “C” is shown as the image pattern indicated by the latent image G3, and the letter “D” is shown as the image pattern indicated by the latent image G4.

  The image structure of the latent image G including the four latent image G1, G2, G3, G4 synthesized on the image forming sheet S is represented by the latent image G1, G2, G3 shown in FIG. , G4 and a partial enlarged plan view of a minute region M in which the latent image images G1, G2, G3, G4 in the latent image G shown in FIG. To do.

  Each latent image G1, G2, G3, G4 of the overlapping latent image G on the image forming sheet S overlaps in the minute region M as shown in FIG. .

  As shown in FIG. 2B, the forgery-preventing latent image G in the minute area M is f1 × e2 in a square or rectangular unit block B of e1 × e2 (e1 = e2 or e1 ≠ e2). A plurality of square or rectangular minimum unit blocks b1 (horizontal parallel line portions), b2 (vertical parallel line portions), b3 divided into n columns and m rows of f2 (f1 = f2 or f1 ≠ f2) in an equal shape. (Left inclined line portion), b4 (right inclined line portion),..., And the minimum unit blocks b1, b2, b3, b4,... Are respectively latent image images G1, G2, G3, G4,. .. Are formed as one pixel (one unit pixel) g1, g2, g3, g4,.

  Alternatively, as shown in FIG. 2B, the latent image in the minute area M is 2 of f1 × f2 (e1 = 2f1, e2 = 2f2) in an e1 × e2 square or rectangular unit block B. Four minimum unit blocks b1 (horizontal parallel line portion), b2 (vertical parallel line portion), b3 (left inclined line portion), b4 (right inclined line portion) each divided into two squares or rectangles in the same shape. The minimum unit blocks b1, b2, b3, and b4 are formed as one pixel (one unit pixel) g1, g2, g3, and g4 of the latent image G1, G2, G3, and G4, respectively.

  In the present invention, the latent image images G1, G2, G3, G4,... Constituting the forgery preventing latent image G are all the same color tone (for example, black) on the image forming sheet S surface. , Blue, red, yellow, green, white, etc.), and the latent images G1, G2, G3, G4,... All or any of the images may be formed with different color tones. In addition, although the formation method of the latent image is not particularly limited, for example, in addition to the offset printing method, the gravure printing method, the screen printing method, etc., an electrophotographic method or a laser printing method using a thermal transfer sheet, Alternatively, an ink jet method or the like can be used.

  In the present invention, the shape of the unit block B is not limited to a rectangular shape such as a square or a rectangle as described above. For example, any one of a polygonal shape, a perfect circular shape, an elliptical shape, and an elliptical shape can be used. 1 type or 2 or more types may be sufficient.

  In the present invention, the shape of the minimum unit blocks b1, b2, b3, b4,... Is not limited to a square shape such as a square or a rectangle as described above. An anti-counterfeit image forming body having any one of a circular shape, an oval shape, and an elliptical shape.

  In the present invention, an anti-counterfeit image forming body composed of, for example, four latent image images G1, G2, G3, G4 as a plurality of latent image images constituting the anti-counterfeit latent image image G will be described in order below. To do.

FIG. 3 shows each pixel g1, g2 in each of the minimum unit blocks b1, b2, b3, b4 in the minute region M part forming four latent image images G1, G2, G3, G4 each constituted by a line pattern. , G3, and g4, and the pixels g1, g2, g3, and g4 that form the latent image G1, G2, G3, and G4, respectively, as shown in FIG. In b2, b3, b4, parallel lines having a predetermined line pitch p of one or more lines and a predetermined line angle θ (0 ° <θ <180 ° or 0 ° ≦ θ ≦ 180 °) are formed. A single line (a single line forming one pitch by one black line portion (image portion) L1 and a white line portion (non-image portion) L2 adjacent thereto) is set to a predetermined line ratio (L1 width / L2 width = R). In the present invention, the line ratio R is not particularly limited, but for example, R = 1 or 0.8 ≦ R ≦ 1.25 is appropriate.

  Each of the pixels g1, g2, g3, and g4 is composed of a line pitch p having a pitch p1, p2, p3, and p4 and a line having an angle θ1, θ2, θ3, and θ4, each having a line angle θ. Each of the line patterns is constituted by any one of the line patterns, and the pitches p1, p2, p3, p4 and the angles θ1, θ2, θ3, θ4 may be different from each other. Any of them may be the same or any of them.

  However, when using parallel lines having the same line pitch p to two or more pixels in each minimum unit block of the unit blocks, the line angles θ are formed differently, or It is appropriate to form the lines so that the line angles θ are equal and the line pitch p is different in phase. Note that the phase of the line pitch p of the line pattern formed as each of the pixels g1, g2, g3, g4,... Constituting each of the plurality of latent image images G1, G2, G3, G4,. Alternatively, the phases of the line pitches p of the line patterns formed as the respective pixels g1, g2, g3, g4 constituting the four latent image images G1, G2, G3, G4 are aligned so as to be the same phase. Formed.

  An example of each of the pixels g 1, g 2, g 3, and g 4 in each of the minimum unit blocks b 1, b 2, b 3, and b 4 in the minute region M forming each of the four latent image images G 1, G 2, G 3, and G 4 3 will be described in more detail.

  As shown in FIG. 3, the line pattern formed as the pixel g1 constituting the latent image G1 in the minimum unit block b1 has a line pitch p of pitch p1 (L1 width / L2 width = 1), The angle θ is a line pattern with an angle θ1, and as shown in FIG. 4A, the latent image G1 overlapping the English letter “A” constituting the latent image G of the image forming body of the present invention is It is formed.

  In addition, the line pattern formed as the pixel g2 constituting the latent image G2 in the minimum unit block b2 has a line pitch p of pitch p2 (L1 width / L2 width = 1) and a line angle θ of angle θ2. (180.degree .-. Theta.1) line pattern, as shown in FIG. 4B, the latent image G2 in which the English letter "B" constituting the latent image G of the image forming body of the present invention overlaps. Is formed.

  Further, the line pattern formed as the pixel g3 constituting the latent image G3 in the minimum unit block b3 has a line pitch p of pitch p3 (L1 width / L2 width = 1), and a line angle θ is an angle θ3. As shown in FIG. 4 (c), an overlapping latent image G3 of the English letter "C" constituting the latent image G of the image forming body of the present invention is formed.

  The line pattern formed as the pixel g4 constituting the latent image G4 in the minimum unit block b4 has a line pitch p of pitch p4 (L1 width / L2 width = 1) and a line angle θ of angle θ4. (180.degree .-. Theta.3) line pattern, as shown in FIG. 4D, the latent image G4 in which the English character "D" constituting the latent image G of the image forming body of the present invention overlaps. Is formed.

As described above, the anti-counterfeit image forming body of the present invention has, for example, a latent image G1, on the image forming sheet S as shown in FIGS. 1 (a) to 1 (b) and FIG. 2 (a). An anti-counterfeit latent image G is formed by overlapping four images G2, G3, and G4. The latent image images G1, G2, G3, and G4 are respectively shown in the partially enlarged plan view of FIG. In each minimum unit block b1, b2, b3, b4, the line angle θ is θ1, θ2, θ3, θ4, and the line pitch p is the line pattern p1, p2, p3, p4, respectively. Is formed.

  In the anti-counterfeit image forming body of the present invention, each of the minimum unit blocks b1, b2, b3, b4,... In which a plurality or four f1 × f2 unit pixels constituting the anti-counterfeit latent image G are formed. In addition to the forms shown in FIG. 2 (a) and FIG. 3, the arrangement form of each of the e1 × e2 unit blocks constituting the circuit shown in FIGS. 5 (a) to 5 (c) is particularly limited. It is not something.

  Further, in the image forming body for preventing forgery of the present invention, the line pattern of each unit pixel g1, g2, g3, g4... Forming each of the latent image G1, G2, G3, G4. The line-drawing state of each of the constituting lines is a continuous drawing line (solid-shaped drawing line) as illustrated in the above drawings, but the present invention is not limited to this, for example, As the line drawing state of each line, it is possible to adopt one or more of dot-like drawing lines, or intermittent drawing lines such as dotted lines and intermittent lines.

  FIG. 6 is a plan view for explaining various line sheets (line screen sheets) for visualizing the anti-counterfeit latent image G of the anti-counterfeit image forming body of the present invention. Are the same as the line pattern in which any one of the unit pixels g 1, g 2, g 3, g 4,... Constituting each latent image G 1, G 2, G 3, G 4,. These are various line sheets SL for visualization in which different line patterns composed of line lines of line pitch p and line angle θ are formed on a transparent sheet of a plastic film (or glass plate or the like).

  FIG. 6A shows the line pitch p1 and line angle θ1, and the width (L1 width) of the image line portion L1 (colored line portions such as black, blue, red, green, yellow, and opaque white). It is a line sheet SL for visualization in which different line patterns composed of lines having a non-image line portion L2 (transparent line portion) width (L2 width) ratio of 1: 1 are formed on a transparent sheet. .

  FIG. 6B shows the line pitch p2, line angle θ2 (180 ° −θ1), and the image line L1 (colored line portions such as black, blue, red, green, yellow, opaque white, etc.). For visualization purposes, different line patterns composed of lines with a ratio of width (L1 width) and non-image area L2 (transparent line) width (L2 width) of 1: 1 are formed on a transparent sheet. The line sheet SL.

  FIG. 6C shows the line pitch p3 and line angle θ3, and the width (L1 width) of the image line portion L1 (colored line portions such as black, blue, red, green, yellow, opaque white). It is a line sheet SL for visualization in which different line patterns composed of lines having a non-image line portion L2 (transparent line portion) width (L2 width) ratio of 1: 1 are formed on a transparent sheet. .

  FIG. 6 (d) shows a line pitch p4, line angle θ4 (180 ° −θ3), and an image line portion L1 (colored line portions such as black, blue, red, green, yellow, and opaque white). For visualization purposes, different line patterns composed of lines with a ratio of width (L1 width) and non-image area L2 (transparent line) width (L2 width) of 1: 1 are formed on a transparent sheet. The line sheet SL.

The line sheet SL with the line angle θ1 shown in FIG. 6A, the line sheet SL with the line angle θ2 (180 ° −θ1) shown in FIG. 6B, and FIG. 6C. The line sheet SL having the line angle θ3 shown in FIG. 6 and the line sheet SL having the line angle θ4 (180 ° −θ3) shown in FIG. Since the line pitches p1 and p2 are the same (p1 = p2), the line pitches p3 and p4 are the same (p3).
= P4), each of the two line sheets SL can be in a front-rear relationship, and instead of using the two line sheets SL, each line sheet SL is manifested by one line sheet SL. Imaging can be performed. When the front and back of one line sheet is used as the line sheet SL, the two line angles θ1 and θ2 are different from each other, and θ1 (θ1 <180 ° or 0 < θ1 <180 °) and θ2 = 180−θ1 are satisfied, and the latent image images G 1, G 2, G 2, G 2, G 2, G 2, It visualizes G3 and G4.

  Further, the line ratio R of the line pattern employed in the line sheet SL is not particularly limited in the present invention, similar to the line pattern employed in the pixel. For example, R = 1, About 0.8 ≦ R ≦ 1.25 is appropriate.

  Further, the line drawing state of the line of the line pattern is a continuous drawing line (solid drawing line) as illustrated in the above drawings, but the present invention is not limited to this. For example, as the line drawing state of each line, it is possible to employ one or more of dot-like drawing lines or intermittent drawing lines such as dotted lines and interruption lines.

  FIGS. 6A to 6D are formed on the anti-counterfeit latent image G formed on the anti-counterfeit image forming body of the present invention shown in FIGS. 1A to 1B and FIG. 7A to 7C and 8A to 8C are visualized by superimposing various line sheets SL shown in FIG.

  A plurality of latent image images G1, G2, G3, G4,... On the image forming sheet S of the anti-counterfeit image forming body of the present invention shown in FIGS. 1 (a) to 1 (b) and FIG. Alternatively, each line pixel SL shown in FIGS. 6 (a) to 6 (d) is superimposed on each unit pixel shown in FIG. 3 formed as four latent image images G1, G2, G3, and G4. The image images G1, G2, G3, G4 are visualized as follows.

  A line pitch p1 (for example, pitch p1) shown in FIG. 6 (a) is formed on the image forming sheet S of the anti-counterfeit image forming body of the present invention shown in FIGS. 1 (a) to 1 (b) and FIG. 2 (a). = 0.1 mm, L1 width (line portion width) = 0.05 mm), and a line sheet SL with a line angle θ1 are overlapped, and as shown in the partial enlarged plan view of FIG. A line pattern of the sheet SL and a line pattern of the line sheet SL among the plurality of latent image images G1, G2, G3, G4,..., Or four latent image images G1, G2, G3, G4 The parallel line pattern p1 (for example, pitch p1 = 0.1 mm, L1 width (line portion width) = 0.05 mm) and the line pattern composed of the line with the line angle θ1 are aligned in parallel. The image line portion L1 ((black, blue, red, green, yellow) of the latent image G1 formed by the line pattern , A colored line portion such as opaque white, and the pixel g1) are visible through the non-image line portion L2 (transparent line portion) of the line sheet SL, and a latent image as shown in the plan view of FIG. This is visualized as an image “A” of the image G1.

Further, on the image forming sheet S of the anti-counterfeit image forming body, the line pitch p2 (same as the line pitch p1, for example, pitch p2 = 0.1 mm, L1 width (image line) shown in FIG. 6B. Part width) = 0.05 mm), and a line sheet SL with a line angle θ2 (180 ° −θ1) is overlapped, or the line pitch p1 and line angle θ1 shown in FIG. The line sheet SL is turned upside down so as to have a line angle θ2 (180 ° −θ1) and superimposed, and in the same manner as above, the line pattern of the line sheet SL and a plurality of latent image images G1, G2, G3, Of the four latent image images G1, G2, G3, G4, the same line pitch p2 as the line pattern of this line sheet SL (same as the line pitch p1, for example, pitch p2 = 0) .1mm, L1 width (line width) = 0.05mm) and a line with a line angle θ2 By aligning the parallel line pattern in parallel, the image line portion L1 ((black,
The colored line portion of blue, red, green, yellow, opaque white, etc., pixel g2) is visible through the non-image portion L2 (transparent line portion) of the line sheet SL, and is shown in FIG. This is visualized as an image “B” of the latent image G2 as shown in the plan view.

  Further, on the image forming sheet S of the anti-counterfeit image forming body, a line pitch p3 (for example, pitch p3 = 0.2 mm, L1 width (image line portion width) = 0. 1 mm), a line sheet SL with a line angle θ 3 is overlaid, and in the same manner as described above, as shown in the partial enlarged plan view of FIG. Of the latent image images G1, G2, G3, G4,... Or the four latent image images G1, G2, G3, G4, the line pitch p3 (for example, pitch) is the same as the line pattern of the line sheet SL. p3 = 0.2 mm, L1 width (image portion width) = 0.1 mm) and a line pattern composed of lines with a line angle θ 3 are aligned in parallel, thereby forming a latent line formed by the line pattern. Image line portion L1 ((black, blue, red, green, yellow, opaque white, etc. An image of the latent image G3 as shown in the plan view of FIG. 8 (a) is displayed through the non-image line portion L2 (transparent line portion) of the line sheet SL. It is visualized as “C”.

  Further, on the image forming sheet S of the anti-counterfeit image forming body, the line pitch p4 shown in FIG. 6 (d) (for example, the same as the pitch p3, pitch p4 = 0.2 mm, L1 width (image portion) (Width) = 0.1 mm), and the line sheet SL with the line angle θ 4 (180 ° −θ 3) is overlapped, or the line with the line pitch p 3 and the line angle θ 3 shown in FIG. The sheet SL is turned upside down so as to have a line angle θ4 (180 ° −θ3) and superimposed, and in the same manner as above, the line pattern of the line sheet SL and a plurality of latent image images G1, G2, G3, G4 ,... Or four lines of the latent image G1, G2, G3, G4 composed of lines having the same line pitch p4 and line angle θ4 as the line pattern of the line sheet SL. By aligning the pattern in parallel, the image of the latent image G4 formed by the line pattern The portion L1 ((colored line portion such as black, blue, red, green, yellow, opaque white, pixel g4) is visible through the non-image portion L2 (transparent line portion) of the line sheet SL, This is visualized as an image “D” of the latent image G4 as shown in the plan view of FIG.

(A)-(b) is a top view of the image forming body for forgery prevention of this invention. (A) is a top view of the image forming body for forgery prevention of this invention, (b) is the elements on larger scale explaining the arrangement structure of the pixel of the latent image image of the M part. (A)-(d) is an M partial enlarged plan view explaining the arrangement structure of the pixels of the latent image image of the M part of the image forming body for forgery prevention according to the present invention. FIG. 3 is a plan view for explaining each latent image of the forgery prevention image forming body of the present invention. (A)-(c) is M partial enlarged plan view explaining the various arrangement structure of the pixel of each latent image of the image formation body for forgery prevention of this invention. (A)-(d) is a partial top view of the various line sheet | seats used for visualization of the image formation body for forgery prevention of this invention. (A)-(c) is a top view explaining the image which overlapped the line sheet on the image formation body for forgery prevention of this invention, and was visualized. (A)-(c) is a top view explaining the image which overlapped the line sheet on the image formation body for forgery prevention of this invention, and was visualized.

Explanation of symbols

S ... Image forming sheet G ... Anti-counterfeit latent image b1, b2, b3, b4 ... Minimum unit block g1, g2, g3, g4 ... Latent image pixel G1, G2, G3, G4 ... Latent image image SL ... 10,000 Wire sheet

Claims (13)

  Each unit block b1, b2, b3, b4,... Obtained by equally dividing the unit block B into m columns and n rows on the image forming sheet is divided into one unit pixel g1, g2, g3, g4,. .. Are formed, and one unit pixel g1, g2, g3, g4... Forming each of the latent image G1, G2, G3, G4. .. is a line pattern composed of one or more lines, and each line pitch p of pitches p1, p2, p3, p4,... And angles .theta.1, .theta.2, .theta.3. , Θ4,..., Θ4,..., Θ4,..., Θ4,. Each of the unit pixels g1, g2, g3, g4 forming G1, G2, G3, G4,... A line sheet for visualization, in which different line patterns composed of lines having the same line pitch p and line angle θ are formed on a transparent sheet. An anti-counterfeit image forming body characterized in that the latent image G1, G2, G3, G4,... Is visualized by superimposing it on the anti-counterfeit image forming body.   Each latent image in which four minimum unit blocks b1, b2, b3, b4 obtained by dividing the inside of the unit block B into two columns and two rows on the image forming sheet as one unit pixel g1, g2, g3, g4, respectively. Images G1, G2, G3, and G4 are formed, and each unit pixel g1, g2, g3, and g4 that forms the latent image G1, G2, G3, and G4 is a single line of one or more lines. , Each of the pitches p 1, p 2, p 3, and p 4, each having a line pitch p and angles θ 1, θ 2, θ 3, θ 4 each having a line angle θ An anti-counterfeit image forming body composed of any one of the line patterns, and each of the unit pixels g1, g2, g3, g4 forming the latent image G1, G2, G3, G4. The line pitch p and the line that are the same as the line pattern constituting the line The latent image G1, G2,... Is formed by superimposing, on the image forming body for anti-counterfeiting, an image forming body for visualization in which different line patterns constituted by lines having an angle θ are formed on a transparent sheet. An anti-counterfeit image forming body characterized in that G3 and G4 are visualized.   3. The forgery prevention image forming body according to claim 1, wherein the unit block B is any one of a rectangular shape such as a square or a rectangle, a polygonal shape, a perfect circle shape, an oval shape, and an elliptical shape. An anti-counterfeit image forming body characterized by having a shape.   4. The image forming body for preventing forgery according to claim 1, wherein the minimum unit blocks b 1, b 2, b 3, b 4,... Are rectangular or polygonal such as a square or a rectangle, An anti-counterfeit image forming body having any one of a perfect circle shape, an oval shape, and an oval shape. 5. The forgery prevention image forming body according to claim 2, wherein each one unit pixel g 1, g 2, g 3, and g 4 forming the four types of the images G 1, G 2, G 3, and G 4 is , Pitches p1, p2, p3, p4 are different from each other, and each of the pitch patterns p1, p2 is composed of different line patterns each composed of a line pitch p and angles θ1, θ2, θ3, θ4. An anti-counterfeit image-forming body composed of four different types of line patterns each composed of two different types of line pitches p and two types of different line angles θ having different angles θ1 and θ2. Thus, the line pitch p and line angle θ, which are the same as the line pattern forming the unit pixel g1, g2, g3, g4, which form the four types of latent image G1, G2, G3, G4, respectively. The pitches p1 and p are different from each other. It is formed by forming four different line patterns consisting of 2 line pitches p and 2 different line angles θ1 and θ2 with different line angles θ1 on a single transparent sheet. The image forming line sheet, or the image forming line sheet each formed on two transparent sheets and using the front and back surfaces, or each formed on four transparent sheets The four types of latent image G1, G2, G3, and G4 are visualized by superimposing the constructed image forming line sheet on the anti-counterfeit image forming body. A forgery-preventing image forming body.   6. A counterfeit-preventing image forming body according to claim 1, wherein a different line pattern composed of a line having the line pitch p and a line angle θ is formed on a transparent sheet. The anti-counterfeit image forming body, wherein the multi-line sheet for imaging has different multi-line patterns formed on the same transparent sheet.   The image forming body for forgery prevention according to any one of claims 1 to 6, wherein a different line pattern composed of lines having the line pitch p and line angle θ is formed on a transparent sheet. The image forming body for forgery prevention, wherein the line sheet for imaging has different line patterns formed on separate transparent sheets.   8. The forgery-preventing image forming body according to claim 2, wherein the two line angles [theta] 1 and [theta] 2 are different, [theta] 1 ([theta] 1 <180 [deg.]), [Theta] 2 =. The latent image G1, G2, G3, G4 is visualized by satisfying the condition of 180-θ1 and superimposing the front and back of the visualization line sheet on the image forming body for anti-counterfeiting. An anti-counterfeit image forming body characterized in that it is configured as described above.   9. An anti-counterfeit image forming body according to claim 1, wherein each of the lines forming a unit pixel constituting each of the latent image G1, G2, G3, G4,. The line pitch difference of the line patterns and the line pitch difference of each line pattern forming a line sheet for visualizing the latent image G1, G2, G3, G4,. An anti-counterfeit image-forming body,   10. An anti-counterfeit image forming body according to claim 1, wherein each of the lines forming a unit pixel constituting each of the latent image G1, G2, G3, G4,. The width difference of the line drawing line part of the pattern and the line drawing line part of the line pattern forming the line drawing sheet for visualizing the latent image G1, G2, G3, G4,. An image forming body for forgery prevention, wherein the difference in width is 0.05 mm or more.   10. An anti-counterfeit image forming body according to claim 1, wherein each of the lines forming a unit pixel constituting each of the latent image G1, G2, G3, G4,. The difference in the line angle θ of the pattern and the difference in the line angle θ of each line pattern forming the line sheet for visualizing the latent image G1, G2, G3, G4,. An anti-counterfeit image-forming body characterized by being 10 ° or more.   12. An anti-counterfeit image forming body according to claim 1, wherein each unit pixel g1, g2, g3 for forming the latent image G1, G2, G3, G4,. , G4,... Is a line pattern composed of a single line corresponding to one or more lines.   13. An anti-counterfeit image forming body according to claim 1, wherein each unit pixel g1, g2, g3,... Forming each of the latent image G1, G2, G3, G4. The counterfeit characterized in that each line constituting the line pattern of g4... is one or more of a continuous line, a dot line, and an intermittent line such as a dotted line. Image forming body for prevention.

Images