JP2008105241A - Forgeryproof printed matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forgeryproof printed matter especially suitable for a ground pattern or the like of the base of a precious printed matter. <P>SOLUTION: The ground pattern consisting of a linear shape is formed on a substrate. The ground pattern consists of a first region and a second region. The ground pattern consists of the first image lines printed with a chromatic infrared-permeable ink and the second image lines. The second image lines consists of the 2-nd-a image lines printed with an infrared-permeable ink formed in the first region and the 2-nd-b image lines printed with an infrared-absorbing ink formed in the second region. The region printed with the infrared-permeable ink of the 2-nd-a image lines is formed in the first region and the region printed with the infrared-absorbing ink of the 2-nd-b image lines is formed in the second region. The first image lines and the second image lines are formed duplicately. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is applied to valuable printed matter that needs to be counterfeited such as banknotes, stock certificates, securities, passports, passports, gift certificates, cards, etc. It relates to printed matter.

  Precious printed matter such as banknotes, stock certificates, securities, passports, passports, gift certificates or cards are required not to be counterfeited or tampered with. As a measure for preventing forgery and tampering of these precious printed matter, for example, there is a method of using a diversified geometric pattern as a tint block pattern. In addition, there is a technique in which a printed pattern is formed with two types of printing inks having different infrared absorption characteristics, and an area printed with the infrared absorption ink can be confirmed with an infrared camera.

  The method of using a design with diversified geometric patterns as a background pattern is used for gift certificates and certificates, etc., and a sign, face value, document, etc. given in colors such as dark ink are printed on the background pattern Has been. When the background pattern printing is printed in a dark color, there arises a problem that it is difficult to confirm the signature, face value, document, etc. with a color such as dark ink on the background pattern. Therefore, the tint block pattern is required to be printed in a light color so that a sign, a face, a document, and the like provided with a color such as dark ink on the tint block pattern stand out.

  As a technique for forming a print pattern with two types of printing inks with different infrared absorption characteristics, for example, a printed material with a print area detected by an infrared sensor, and the printed material is printed with printing inks with different infrared absorption characteristics An infrared-absorbing printed material having a region formed therein is disclosed (for example, Patent Document 1).

  In addition, as a technique for forming a chromatic pattern with two types of printing inks having different infrared absorption characteristics, a printed material for forming a pattern on a coated paper by chromatic pattern printing, the chromatic pattern printing includes a first area and a second pattern. The first area is made of black ink using carbon black, the second area is formed using black ink mixed with cyan ink, yellow ink and magenta ink, and the same color under normal light However, a technique is disclosed in which, when observed with an infrared display device, only the chromatic pattern printing of the first region is confirmed without confirming the chromatic pattern printing of the second region (Patent Document). 2).

JP 63-307996 (page 1-12, Fig. 1-5) JP 2003-302519 A (6th page, FIG. 7)

  However, Japanese Patent Application Laid-Open No. 63-307996 needs to prepare an infrared absorbing ink using a special pigment. On page 6 of Japanese Patent Laid-Open No. 2003-13395, the first region of the chromatic pattern is black ink using carbon black as the black pigment, and the second region of the chromatic pattern is cyan ink, yellow ink, and Infrared-absorbing prints are easily formed by using a black color mixed with magenta ink, but the color that can be confirmed under visible light is a black color. There is a problem that it is difficult to confirm a sign, face value, document, and the like that are provided on the pattern with a color such as dark ink having the same color as the background pattern.

  An object of the present invention is to solve the above-described problems, and it is possible to embed a latent image image that can be confirmed by an infrared display device in a background pattern, and the background pattern is dark on the background pattern. It is possible to print on the basis of light colors so that signs, face values, documents, etc. given by colors such as colored inks stand out, and are simple inks of cyan ink, yellow ink, magenta ink and black ink. This also proposes an anti-counterfeit printed matter that can be produced.

  In the present invention, a ground pattern having a linear shape is formed on a substrate, the ground pattern is composed of a first region and a second region, and the ground pattern is printed with a chromatic infrared transmitting ink. An image line and a second image line, the second image line being printed with the infrared transmitting ink formed in the first region, the 2a image line and the infrared absorption formed in the second region An area printed with the 2b image line printed with ink, an area printed with the infrared transmitting ink of the 2a image line formed in the first area, and an area printed with the infrared absorbing ink of the 2b image line Is an anti-counterfeit printed matter formed in the second region, wherein the first image line and the second image line are formed to overlap.

  Further, according to the present invention, a ground pattern having a linear shape is formed on a base material, and the ground pattern is composed of a first region and a second region, and the ground pattern is printed with a chromatic infrared transmitting ink. At least two first image lines arranged at equal intervals and a second image line, and the second image lines are printed with infrared transmitting ink formed in the first region. The second line is printed with the infrared absorbing ink formed on the image line and the second area, and the area printed with the infrared transmitting ink on the second line is formed in the first area. The area printed with the infrared absorbing ink of the 2b image line is formed in the second area, and the second image line is formed by being sandwiched between the first image lines. is there.

  Further, according to the present invention, a ground pattern having a linear shape is formed on a substrate, and the ground pattern is composed of a first region and a second region, and the ground pattern is printed with a chromatic color infrared transmitting ink. It consists of a first image line and a second image line, and the second image line is formed in the 2a image line and the second area which are printed with the infrared transmitting ink formed in the first area. The area of the 2a image printed with the infrared transmitting ink is formed in the first area, and the area of the 2a image printed with the infrared absorbing ink of the 2b image. The printed area is formed in the second area, and the first image line is formed adjacent to or close to the second image line.

  Further, according to the present invention, a ground pattern having a linear shape is formed on a substrate, and the ground pattern is composed of a first region and a second region, and the ground pattern is printed with a chromatic color infrared transmitting ink. The second image line is composed of a first image line and at least two second image lines arranged at equal intervals, and the second image line is a second image printed with infrared transmission ink formed in the first region. A line and a 2b image line printed with the infrared absorbing ink formed in the second region, and a region printed with the infrared transmissive ink of the 2a line is formed in the first region. The area printed with the infrared absorbing ink of the line 2b is formed in the second area, and the first line is formed by being sandwiched between the second lines. is there.

  Further, according to the present invention, the first image line printed with the chromatic infrared transmitting ink is formed of one or more inks of cyan ink, magenta ink, and yellow ink, and the second region 2a of the first region is formed. The image line and the 2b image line of the second region are forgery-preventing printed matter characterized by being formed of the same color ink.

  In addition, the present invention is the forgery-preventing printed matter, wherein the first image line printed with the chromatic color infrared transmitting ink is a light color ink.

  Further, the present invention is the anti-counterfeit printed matter, wherein the CIELAB lightness L * of the light color ink is 65 to 90.

  It is possible to embed a latent image that can be confirmed by an infrared display device in the background pattern, and it is possible to determine whether the latent image can be confirmed or not.

  Since the tint block pattern can be printed based on a light color, it is possible to easily confirm a sign, a face, a document, and the like that are applied with a color such as dark ink printed on the tint block pattern.

  Further, since it can be produced with simple inks of cyan ink, yellow ink, magenta ink and black ink, the cost is low.

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

  The tint block pattern formed on the anti-counterfeit printed matter of the present invention has a linear shape.

  FIG. 1 shows an anti-counterfeit printed matter A1. In the anti-counterfeit printed matter A1, a tint block pattern 2 composed of curved lines 3 is formed on the substrate 1. In FIG. 1, it is formed only by the curved line drawing line 3, but it may be formed by at least one of a straight line drawing line, a curved line drawing line, a zigzag drawing line, a colored pattern, and a geometric pattern. it can. The tint block pattern 2 is divided into a first region 4 and a second region 5. The first region 4 is a background image portion where an image is not displayed when observed with an infrared display device, and the second region 5 is a latent image portion where an image is displayed when observed with an infrared display device. The present invention is not limited to this, and the first region 4 is a latent image portion where an image is displayed when observed with an infrared display device, and the second region 5 is observed with an infrared display device. A background image portion in which no image is displayed may be used. FIG. 1 illustrates the region division using dotted lines for explaining the present invention, but the dotted lines are not printed in an actual anti-counterfeit printed matter. The copy-forgery-inhibited pattern 2 is formed by a first image line 6 printed with a chromatic infrared transmissive ink, and a second image line 7 composed of a region printed with an infrared transmissive ink and a region printed with an infrared absorbing ink. Is done. The area printed with the infrared transmitting ink of the second image line 7 is formed in the first area 4, and the area printed with the infrared absorbing ink of the second image line 7 is formed in the second area 5. . The second image line 7 formed in the first region 4 is a 2a image line 7a, and the second image line 7 formed in the second region 5 is a 2b image line 7b. . The 2a image line 7a and the 2b image line 7b have the same or almost the same image line width in FIG. 1, but need to be the same or approximately the same (even if there is a difference between the image line widths). The 2a image line 7a and the 2b image line 7b are continuous lines. However, the 2a image line 7a and the 2b image line 7b may be slightly spaced from each other in printing printing.

  In FIG. 1, the second image line 7 is formed between two first image lines 6 arranged at equal intervals. Therefore, the relationship between the numbers of the first image line 6 and the second image line 7 is 2: 1. The first image line 6 and the second image line 7 may be slightly separated without contacting each other. The first image line 6 may be formed by two or more image lines arranged at equal intervals. Further, the first image line 6 may be adjacent to the second image line 7 as in the anti-counterfeit printed matter A2 shown in FIG. The first image line 6 may be in the form of being close to the second image line 7 (the first image line 6 and the second image line 7 are slightly separated). In this case, the relationship between the numbers of the first image line 6 and the second image line 7 is 1: 1. Moreover, the 1st image line 6 is good also as a form pinched | interposed into the 2nd image line 7 located in a line at equal intervals like the forgery prevention printed matter A3 shown in FIG. In this case, the relationship between the numbers of the first image line 6 and the second image line 7 is 1: 2. The first image line 6 and the second image line 7 may be slightly separated without contacting each other. The second image line 7 may be formed by two or more image lines arranged at equal intervals. Furthermore, you may form the 1st image line 6 and the 2nd image line 7 by superimposition (overlapping state).

  The first image line 6 printed with the chromatic color infrared transmitting ink is preferably printed with at least one of cyan ink, magenta ink, yellow ink and special color ink. Since the first image line 6 becomes the base color of the tint block pattern, it is preferable to print the light color base. This is because when the background pattern printing is printed on the basis of the dark color, there is a problem that it is difficult to confirm a sign, a face value, a document, or the like that is provided with a color such as dark ink on the background pattern. The light color here means a light cyan ink, a light magenta ink, a light yellow ink, and a light spot color ink. Further, at least one color mixture of light cyan ink, light magenta ink, light yellow ink and light special color ink may be used. The dark color is dark cyan ink, dark magenta ink, dark yellow ink, dark special color ink, and dark black ink. The light color ink used in this specification refers to a case where the CIELAB lightness L * is 65 to 90, and the dark color ink refers to a case where the CIELAB lightness L * is 30 to 65.

  For example, when the sign, face value, document, and the like given on the background pattern are general black (Bk 100%), in order to make it easy to confirm such information, the first image line 6 is CIELAB lightness. A light color ink of L * 65 to 90 is preferable. Further, the first image line 6 is preferably a light color ink having CIELAB lightness L * 80 to 90. For the sake of design, in order to make it easy to recognize characters, etc., the background of the characters, etc. is plain or the influence of the line color is small, and the proportion of non-image areas is wide. Processing to make a line design is required. On the other hand, when it is composed of light-colored ink, the necessity is small, and a pattern can be applied to the entire substrate. In order to make it easy to recognize characters and the like, in the case of CIELAB lightness L * 80 to 90 that can sufficiently recognize characters or the like given on light-colored ink, the non-image area ratio is 5 to 50%. It is preferable that If it is 5% or less, the tint block pattern is difficult to visually recognize with the naked eye, and if it is 50% or more, there is a problem that it is difficult to confirm the sign, face value, document, or the like given on the tint block pattern. In the case of CIELAB lightness L * 65-80 in which characters or the like applied to the light color ink are difficult to recognize, the image non-image area ratio is preferably 5 to 25%. If it is 5% or less, the tint block pattern is difficult to visually recognize with the naked eye, and if it is 25% or more, there is a problem that it is difficult to confirm the sign, face value, document, etc. given on the tint block pattern.

  The first image line 6 needs to have a larger image line width than the second image line 7. This is because the main color of the tint block pattern is formed by the first image line 6. It is preferable that the image line width of the first image line 6 is 40 to 400 μm, and the image line width of the second image line 7 is 20 to 200 μm. The ratio of the line widths of the first image line 6 and the second image line 7 is preferably about 2: 1 to 10: 1.

  In the case of observing with a general infrared display device, the infrared absorbing material used in the infrared absorbing ink only needs to have an absorption characteristic in any wavelength range of about 700 to 1000 nm. Carbon black, tin compound or leuco Dyes can be used.

  FIG. 4 shows a case where the anti-counterfeit printed matter A1 shown in FIG. 1 is observed with the naked eye under visible light. The 2a image line 7a and the 2b image line 7b have the same width, and the boundary between the 2a image line 7a and the 2b image line 7b is a continuous line without being disconnected. . Further, the 2a image line 7a is formed of a black color composed of a mixture of cyan ink, magenta ink, and yellow ink, and the 2b image line 7b is formed of black ink. The area 5 of 2 cannot be divided and visually recognized. Further, since the line widths of the first image line 6 and the second image line 7 are about 2: 1 to 10: 1, the color of the first image line 6 is the main color of the tint block pattern 2. Become. For example, when the first image line 6 is printed in a light cyan color, the background pattern can be visually recognized as a light cyan color as a whole.

  FIG. 5 shows a case where the anti-counterfeit printed matter A1 is observed with an infrared display device. Since the first image line 6 and the second image line 7a are printed with infrared transmission ink, they cannot be visually recognized by the infrared display device. The 2b image line 7b is visible because it is printed with infrared absorbing ink. Accordingly, the second image line 7a of the background image portion which is the first image line 6 and the first region 4 cannot be visually recognized, but the second image image of the second image 5b of the latent image portion which is the second region 5. The line 7b can be confirmed. Therefore, the latent image (P) including the 2b image line 7b is visually recognized.

  FIG. 6 shows a case where a signature is printed on the anti-counterfeit printed matter A1. For example, when the first image line 6 is printed in a light cyan color, the background pattern can be visually recognized as a light cyan color as a whole. When a sign (printing station) is applied with dark ink printed on the background pattern, the background pattern is light cyan, whereas the signature is dark, so there is a large difference in brightness and saturation. And you can easily check your signature. The same effect can be obtained in the forgery prevention printed matter A2 and the forgery prevention printed matter A3.

  Since the tint block pattern of the forgery-preventing printed material of the present invention can be printed based on a light color, it is optimal for embedding a copy check pattern. Therefore, it is possible to use a fixed-period break line, a branched image line, and an image line similar to them described in Japanese Patent No. 3368327 and Japanese Patent No. 3268418. Further, by forming the solid line, the broken line, and the dotted line with minute characters and special patterns, the effect of preventing duplication and copying is improved. FIG. 7 shows an example in which a copy prevention pattern is embedded. A copy prevention image line is formed in the third area 8, and the periphery of the third area 8 is a fourth area 9. The copy protection image line is finely cut. The copy-preventing image line cannot be visually recognized by the naked eye, but is judged as a single image line. Since the third region 8 is not reproduced and the fourth region 9 is reproduced in the copy obtained when the forgery prevention printed material is copied, the latent image (F) can be confirmed. By combining the copy-preventing image lines in this way, it is possible to obtain a forgery-preventing printed matter comprising copy-restricting means and authenticity determination means based on the presence or absence of appearance of a latent image by an infrared display device.

  The anti-counterfeit printed matter A4 shown in FIG. 11 is a printed matter formed by dividing the first image line 6, the 2a image line 7a, and the 2b image line 7b of the anti-counterfeit printed material A1 shown in FIG. It is. The present invention can obtain the same effect even if it has the structure of the anti-counterfeit printed matter A4. Further, although not shown, the image lines can be similarly divided for the forgery-preventing printed materials A2 and A3.

  FIG. 12 shows a special-shaped image line. FIGS. 12A, 12B, and 12C show the first image line 6, the second image line 7a, and the first image line. The star shape is formed by the 6 and the second line 7b. A plurality of fine star-shaped images may be arranged to give a line shape. 12 (d), 12 (e), and 12 (f), the first image line 6 and the second image line 7a, and the first image line 6 and the second image line 7b have a rectangular shape. Forming. A plurality of fine quadrilateral images may be arranged to give a line shape. In FIG. 12A and FIG. 12D, the 2a image line 7 a or the 2 b image line 7 b is formed adjacent to the first image line 6. 12B and 12E, the 2a image line 7a or the 2b image line 7b is formed between the first image lines 6. In FIG. In FIG. 12C and FIG. 12F, the first image line 6 is formed by being sandwiched between the 2a image line 7a or the 2b image line 7b. Further, the star shape or the quadrilateral shape may be formed by three kinds of the first image line 6, the 2a image line 7a, and the 2b image line 7b. The special shape image line of the present invention is not limited to this, and various shape image lines such as a circle, a polygon or a special shape can be adopted.

  The first image line is printed with colored fluorescent ink that emits light when irradiated with ultraviolet rays, thereby improving the forgery prevention effect.

  Information such as symbols, patterns, characters, symbols or barcodes can be given to the latent image.

  As the base material used in the present invention, paper sheets, films, plastics and the like can be used.

  The printing method used in the present invention is not particularly limited, but a printing method using offset printing, a laser printer, or an ink jet printer is preferable.

  The infrared display device used in the present invention can sufficiently recognize a latent image with a commercially available simple infrared display device.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.

(Example 1)
FIG. 8 shows an anti-counterfeit printed matter B1 of the present invention. In this embodiment, print data is created using Adobe Illustrator, which is general DTP software. The forgery-preventing printed matter B1 is a printed matter obtained by printing a tint block pattern 2 composed of curved lines on a paper 1 with a process ink using an offset printer. The copy-forgery-inhibited pattern 2 is divided into a first region 4 and a second region 5, where the first region 4 is a background image portion and the second region 5 is a latent image portion. The copy-forgery-inhibited pattern 2 includes a first image line 6 and a second image line 7 (a second image line 7a and a second image line 7b). The first image line 6 and the second image line 7 are in contact with each other. The first image line 6 was obtained by printing process magenta ink with a solid density of 0.5 (CIELAB lightness L * 70). The 2a image line 7a is printed with a mixed color of process cyan ink (solid density 0.58), process magenta ink (solid density 0.63) and process yellow ink (solid density 0.79), and has a black color. It became. The 2b image line 7b was printed with process black ink (solid density 0.55). The first image line 6 was formed with an image line width of 200 μm, and the 2a image line 7a and the 2b image line 7b were formed with 60 μm.

  FIG. 9 shows a diagram when the anti-counterfeit printed matter B1 of Example 1 is observed with the naked eye under visible light. The difference between the first region 4 and the second region 5 could not be identified with the naked eye. FIG. 10 shows a case where the anti-counterfeit printed matter B1 of Example 1 is observed with an infrared display device. Only the 2b image line 7b of the second region 5 was confirmed, and the latent image (positive) was confirmed.

(Example 2)
Printing was performed with a laser printer in the same color as in Example 1, and the anti-counterfeit printed matter of Example 2 was produced. In the first image line 6CMYK color space, magenta was specified at 60%. The 2a image line 7a is designated by a mixed color of 60% cyan, 60% magenta and 55% yellow, and has a blackish color. The second line 7b is designated by 65% black. The first image line 6 was formed with an image line width of 200 μm, and the 2a image line 7a and the 2b image line 7b were formed with 60 μm. The same effect as in Example 1 was obtained.

(Example 3)
Printing with an ink jet printer with the same color and color designation as in Example 2 was performed to produce a forgery-preventing printed matter of Example 3. The same effects as in Example 1 and Example 2 were obtained.

It is a figure which shows the forgery prevention printed matter A1. It is a figure which shows the forgery prevention printed matter A2. It is a figure which shows the forgery prevention printed matter A3. It is a figure which shows the case where the forgery prevention printed matter A1 is observed with the naked eye under visible light. It is a figure which shows the case where the forgery prevention printed matter A1 is observed with an infrared display device. It is a figure which shows the case where a face value is printed on the forgery prevention printed matter A1. It is a figure at the time of forming a copy check pattern in forgery prevention printed matter A3. It is a figure which shows the forgery prevention printed matter B1. It is a figure which shows the case where the forgery prevention printed matter B1 is observed with the naked eye under visible light. It is a figure which shows the case where the forgery prevention printed matter B1 is observed with an infrared display device. It is a figure which shows the forgery prevention printed matter A4. It is a figure which shows the special 1st drawing line, the 2a drawing line, and the 2b drawing line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base material 2 Background pattern 3 Curved line drawing line 4 1st area | region 5 2nd area | region 6 1st drawing line 7 2nd drawing line 7a 2a drawing line 7b 2b drawing line 8 3rd Region 9 Fourth region A1, A2, A3, A4B1 Anti-counterfeit printed matter

Claims (7)

A ground pattern having a linear shape is formed on a substrate, and the ground pattern is composed of a first region and a second region, and the ground pattern is a first image printed with a chromatic infrared transmitting ink. And the second image line. The second image line is formed in the second area and the second area which are printed with the infrared transmitting ink formed in the first area. The 2b image line is printed with the infrared absorbing ink, the area of the 2a image line printed with the infrared transmitting ink is formed in the first area, and the 2b image line is printed with the infrared absorbing ink. An area for printing is formed in a second area, and the first image line and the second image line are formed so as to overlap each other. A tint block pattern composed of a line shape is formed on a substrate, and the tint block pattern is composed of a first region and a second region, and the tint block pattern is printed with at least two chromatic color infrared transmitting inks. It consists of a first image line and a second image line that are arranged at equal intervals, and the second image line is a second image line printed with infrared transmitting ink formed in the first region, and The second area is formed of a second line printed with infrared absorbing ink formed in the second area, and the second area of the image printed with infrared transmitting ink is formed in the first area. The area printed with the infrared absorbing ink of the line 2b is formed in the second area, and the second line is formed by being sandwiched between the first lines. Printed matter. A ground pattern having a linear shape is formed on a substrate, and the ground pattern is composed of a first region and a second region, and the ground pattern is a first image printed with a chromatic infrared transmitting ink. And the second image line. The second image line is formed in the second area and the second area which are printed with the infrared transmitting ink formed in the first area. The 2b image line is printed with the infrared absorbing ink, the area of the 2a image line printed with the infrared transmitting ink is formed in the first area, and the 2b image line is printed with the infrared absorbing ink. An area to be printed is formed in a second area, and the first image line is formed adjacent to or close to the second image line. A ground pattern having a linear shape is formed on a substrate, and the ground pattern is composed of a first region and a second region, and the ground pattern is a first image printed with a chromatic infrared transmitting ink. Line 2 and at least two second image lines arranged at equal intervals, wherein the second image line is a 2a image line printed with infrared transmissive ink formed in the first region and The second area is formed of a second line printed with infrared absorbing ink formed in the second area, and the second area of the image printed with infrared transmitting ink is formed in the first area. The area printed with the infrared absorbing ink of the line 2b is formed in the second area, and the first line is formed by being sandwiched between the second lines. Printed matter. The first image line printed with the chromatic infrared transmissive ink is formed of one or more of cyan ink, magenta ink, and yellow ink, and the 2a image line in the first region. 5. The forgery-preventing printed material according to claim 1, wherein the 2b image line of the second region is formed of the same color ink. The forgery-preventing printed matter according to claim 1, 2, 3, 4, or 5, wherein the first image line printed with the chromatic color infrared transmissive ink is a light color ink. The forgery-preventing printed matter according to claim 6, wherein the light-colored ink has a CIELAB lightness L * of 65 to 90.

Images