JPH0725130A - Inside and outside pattern synthesized printed matter wherein latent image appears as color image and production thereof - Google Patents

Abstract

PURPOSE:To prevent the forgery and alteration of securities or important documents by forming a color image in a screen pattern such as a pattern of numerous lines or a dot pattern as a latent image and synthesizing inside and outside screen patterns under transmitted light and developing the latent image to form a color gradation image. CONSTITUTION:Separated color images of yellow, magenta and cyan obtained by process color separation or artificial color separation are applied to a screen pattern of every kind such as a pattern of numerous lines or a dot pattern as latent images 12a, 12b, 12c. Three images applied as latent images are applied to either one of the upper and rear surfaces of a material to be printed pervious to light using process ink and a screen pattern of every kind such as a pattern of numerious lines or a dot pattern at every colors not applied as latent images is printed on the other surface of the material to be printed in matching relation to the printing position of one same printing color. As a result, the forgery and alteration of securities, various certificates and important documents can be prevented and artistic effect due to the production of a color can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front and back pattern composite printed matter in which a latent image appears as a color image and a method for producing the same. Such printed matter is forged or altered such as securities, various certificates and important documents. It can be used as a printed matter for prevention as well as a printed matter having an artistic effect.

[0002]

2. Description of the Related Art A method for preventing forgery of securities by using a front and back composite pattern is a simple pattern composition as seen in foreign banknotes, etc. Is divided into partial elements, and printing is performed on the front and back sides of the material to be printed. In addition, Japanese Patent Application No. 3-3 which enables the latent image that the present inventors have already applied for.
As in No. 32716, various patterns are printed with lines, halftone dots, etc. on either one of the front and back sides of the material that transmits light.
On the other side, print various patterns consisting of lines that have a pattern to be a latent image on lines, halftone dots, etc., so that the printing positions match each other, and when this printed matter is watermarked with light, the front and back patterns are seen. Even in the technique in which a latent image is combined and a latent image appears as a continuous tone image, the image that can be expressed is a monotone, and the latent image cannot be provided with complicated information that a color change of a color image has.

[0003]

As seen in foreign banknotes and the like, in which a pattern is synthesized by using the front and back sides of a material to be printed, as described above, the pattern is simply divided into partial elements. The printed material is printed on the front and back, and this printed material can be easily reproduced and is easy to forge. In addition, there is a drawback in that the amount of information that can be expressed and the artistic effect are poor even in the case of a front and back pattern synthetic printed material with a latent image.

In view of the above points, the present invention is intended to prevent forgery and alteration of securities, various certificates and important documents, and to have an artistic effect by color production. A yellow, magenta, or cyan color separation image obtained by color separation or artificial color classification, or several color separation images are used as latent images on various screen patterns such as lines and halftone dots for each color. Then, the image with these latent images is printed with process ink or special color ink (ink other than primary color or ink of intermediate color) on either the front or back of the substrate that transmits light, and the latent image is printed on the other. Lines used for each color not applied, various screen patterns such as halftone dots are printed with process ink or special color ink in alignment with the printing position of the same printing color on the one side,
When this printed matter is viewed through light, the pattern is synthesized by the change of transmitted light depending on the overlapping degree of the front and back patterns, and the latent image appears as a color image having binary or continuous gradation. It is intended to provide a front and back pattern synthetic printed material and a method for producing the same.

[0005]

Means for Solving the Problems In the Japanese Patent Application No. 3-332716, the inventors of the present application printed various patterns with lines, halftone dots or the like on either the front or back of a material that transmits light.
On the other side, various patterns consisting of lines with lines to be latent images on lines, halftone dots, etc. are printed by aligning the printing positions with each other. We have already applied for a technology in which a latent image appears as a continuous tone image after being combined. First, the invention in Japanese Patent Application No. 3-332716 will be described.

Various patterns are printed on one of the front and back sides of the printing medium by lines, halftone dots, etc., and on the other side, various patterns consisting of lines, halftone dots and the like with an image to be a latent image. , Align the printing positions of each other and print. When this front and back pattern composite printed matter is viewed through light, the front and back patterns are combined and the latent image appears as a continuous tone image. That is, in the method of reproducing an image, lines, halftone dots, etc. are used, and the latent image becomes a continuous tone image due to a slight change in the amount of light due to the degree of overlap between the front and back patterns that occur when light is transmitted through the printed matter for viewing. Will appear. Naturally, the material to be printed used here is a substance such as paper and needs to have a property of sufficiently transmitting light, which makes it possible to discriminate between true and false.

FIG. 1 is a line pattern image (A) to be printed on the front side of the printing medium, and FIG. 2 is an original image used as a latent image to be printed on the back side of the printing medium ( It is a latent image pattern image (B) obtained from (not shown). The line pattern image (A) and the latent image pattern image (B) are produced by a photographic method using the same line screen, and the latent image pattern image (B) has an image portion showing a shade. This is a deviation from the line pattern image (A). Printing is performed on the front and back sides of the printing material so that the positional deviation relationship between the line pattern image (A) and the latent image pattern image (B) is maintained, and the printed matter is seen through the light as shown in FIG. An image (C) with various continuous tones with various shades appears.

FIG. 4 is an enlarged view of an image line showing the principle of a latent image when the front and back patterns are seen by light transmission. The line pattern image line (A ') is the line pattern image of FIG. A) corresponds to one line, and the latent image pattern image line (B ′) corresponds to one of the latent image pattern image (B) in FIG. 2. The latent image pattern drawing line (B ') on which the latent image is formed is displaced in the vertical direction with respect to the line pattern drawing line (A') as shown in FIG. 4, and when the printed matter is watermarked with light, When the line pattern drawing line (A ') and the latent image pattern drawing line (B') overlap on the front and back sides, light can be transmitted from the part (4) where there is no image line, and when they do not overlap, the image line blocks light. To do. As a result, the amount of light that can be transmitted can be adjusted, and the overlapping portion can be represented as the highlight portion (1) and the non-overlapping portion can be represented as the shadow portion (2). Naturally, since there is a halftone part (3) between the highlight part (1) and the shadow part (2), it is possible to make various changes by using this principle and continuously changing the overlapping degree of the front and back drawing lines. It is possible to create an image with various gradations.

The latent image pattern line (B ') described above can be produced by a photographic method as follows. First, FIG.
The line drawing screen positive (E) of FIG. 6 which is line-drawn by the line drawing screen from the pattern (D) of the negative image of continuous tone of
To prepare. The parallel line screen negative (F) of FIG. 7 was produced from this parallel line screen positive (E), and the parallel line screen positive image line (E ′) and the parallel line screen negative (F) of the parallel line screen positive (E) were produced. When both lines of the line screen negative image line (F ') are slightly shifted as shown in FIG. 8 and overlapped {about 20 to 25% of the screen pitch (5)}, the line screen positive image line (E') is obtained. A part (6) which is not masked by the line screen negative image (F ') is formed. Further, by superimposing and returning the superposed ones in FIG. 8, the original plate of the latent image pattern image (B) described in FIG. 2 is completed. On the other hand, an original plate of the line pattern image (A) in FIG.

Using the printing plates prepared based on these original plates, the line pattern image (A) of FIG. 1 is printed on the front side, and the latent image pattern image (B) of FIG. 2 is printed on the back side in the arrangement of FIG. Then, the printed matter with the latent image is completed.

In the present invention, a color original image is processed by color separation or artificially classified (this artificial means color separation of an original image based on the process color separation, that is, the color separation of the original image based on the subtractive color mixing theory). It is a method of arbitrarily dividing the components according to the human sense. Furthermore, in process color separation or artificial color coding, the equipment and other materials used for both of them are not limited.) Yellow and magenta obtained. , A cyan three-color separated image is applied as a latent image in various screen patterns such as lines and halftone dots for each color by the method as shown in FIG. 8, and the image on which these three latent images are applied is used as an optical image. Various screen patterns such as lines, halftone dots, etc. used for each of the above-mentioned colors, which are printed with the process ink on one of the front and back sides of the printing material which transmits the By printing with the process ink along with the printing position of the printing color, when this front and back printed matter was viewed through light, the color of the latent image that appeared was composited by subtractive color mixing and had binary or continuous gradation. We have developed a front and back pattern synthetic printed material that appears as a color image and a method for making it.

Further, the separated images of several colors obtained by process color separation or artificial color classification are applied as latent images to various screen patterns such as lines and halftone dots for each color, and the latent images of these several colors are formed. An image is printed with a special color ink or a functional ink on either the front or back side of the substrate that transmits light, and the other is not printed with a latent image. The various screen patterns are printed with a special color ink or a functional ink so as to match the printing position of the same printing color on the one side. When this printed matter was viewed through light with a watermark, the patterns on the front and back sides were combined, and the latent image appeared as a color image with binary or continuous gradation. By utilizing a material that changes the color of the ink depending on the nature of the light source to be observed, the synergistic effect of this is effective in preventing forgery due to copying and color separation.

[0013] A completely different, normally visible pattern is combined with the several color patterns used for either one of these front and back surfaces where latent images are formed on various screen patterns such as lines and halftone dots. This normally visible pattern acts as a camouflage for the latent image being applied. Further, in the other various screen patterns such as lines and halftone dots which are not subjected to latent images of several colors, a normally visible pattern different from the one used in the above one is combined. By printing this together with the printing position of the same color on one side, when this printed matter is viewed through light, the normally visible patterns on the front and back are combined to form a pattern with one meaning. . Further, since the latent image appears as a color image having binary or continuous gradation, the printed matter has two types of image information appearing at the same time. Further, it is possible to combine a normally visible pattern on the front and back sides with the color image so as to form a pattern having one meaning, and it is possible to provide a front and back pattern synthetic printed matter which is effective as a forgery prevention and display.

[0014]

The latent image formed on the front and back pattern composite printed material according to the present invention looks like a normal image, that is, when the printed material is viewed on one side, the entire latent image has a uniform density. Looking through this with light, the patterns on the front and back of each color that are color-coded are combined, and a latent image with the required density change for each color component appears, and these colors are combined. When formed, various colors are formed by subtle changes in the overlapping of colors. Further, it becomes possible to obtain a plurality of image information from one printed matter by using the camouflage pattern. Naturally, the material to be printed used here is a semitransparent substance such as paper and needs to have a property of sufficiently transmitting light, and this property effectively works the present invention.

[0015]

The present invention is a method for synthesizing front and back patterns in which a latent image that cannot be normally recognized appears as a color image having binary or continuous gradation only when a printed matter printed on the front and back is viewed through light. In the screen pattern for forming an image, various shapes such as halftone dots, grains, lines, and wavy lines can be used, and the screen pattern is not limited at all. Hereinafter, a printed material having a condition for recognizing a latent image and a method for producing the image will be described in detail with reference to the drawings in order using a line screen as an example.

FIG. 9 is a color original image. The color original image (9) has a yellow (9
a), magenta (9b), cyan (9c), blue (9
d), green (9e), and red (9f) are present. When this is subjected to process color separation or artificially classified into yellow, magenta, and cyan, the yellow component (10A) of the original image, the magenta component (10B) of the original image, and the cyan component (10C of the original image as shown in FIG. ), The color separation components of these original images are used as latent images.

FIG. 11 shows a line screen for making the color separation components obtained in the explanation of FIG. 10 into a latent image, and these are set so that moiré does not occur in consideration of overprinting. . That is, the screen angle of the line screen shown in FIG.
When the screen angle (a) of A) is 0 degree, the screen angle (b) of the magenta line screen (11B) is 150 degrees, and the screen angle (c) of the cyan line screen (11C) is 60 degrees. is there. FIG. 12 is an image in which the color separation components of the color original image obtained by the process color separation of FIG. 10 are applied as latent image pattern lines to the parallel line screen of FIG. 11 for each color, and the image area ratio is about 50%. Then, in FIG.
The latent image shown in Fig. 3 is a pattern in which the line pattern in the latent image is displaced from the surrounding line pattern (Principle of production of latent image pattern line of latent image) Can be produced by the photographic method described above with reference to Figures 5 to 8. Therefore, in the case of the photographic method, the color separation component shown in Figure 10 is a negative image. It is also possible to produce a latent image pattern drawing line having a form similar to that of a photographic method by an electronic method, and the latent image pattern drawing line of the image formed with the latent image including the steps shown in FIGS. The manufacturing method is not particularly limited). As a result, the yellow component (12A) of the image on which the latent image has been applied can be visually recognized by the yellow line screen (11A) and the yellow component (10A) of the original image, that is, yellow (9a), green (9e), Red (9f) is the yellow component (12
a), a green component (12e) in the latent image, and a red component (12f) in the latent image. Similarly, the magenta component (12B) of the latent image is the magenta line screen (1).
1B) and the magenta component (10B) of the original image, magenta (9b), blue (9d), which are normally visible,
Red (9f) is a magenta component (12b) in the latent image, blue component (12d) in the latent image, red component (1 in the latent image
2f), and the cyan component (12
C) is cyan (9c), blue (9d), and green (9e), which are colors that can be normally recognized by the cyan line screen (11C) and the cyan component (10C) of the original image, and the cyan component (12c) in the latent image. ), The blue component in the latent image (12
d) becomes the green component (12e) in the latent image. These are the image lines to be printed on one of the front and back sides of the printing medium. Also,
The latent image shown in FIG. 12 is arranged so as to cause a positional shift with respect to the surrounding lines, and yellow (9a), magenta (9b), cyan (9c), and blue (9d) which are normally visible colors are arranged. ), Green (9e), and red (9f), as described above with reference to FIG. 4, continuous gradation can be provided by a subtle change in the light amount depending on the degree of overlap of the front and back screens.

On the other hand, the yellow component (12A) of the latent image is formed and the magenta component (12) of the latent image is formed.
B), the image area ratio of 50% corresponding to the parallel line screen used for the cyan component (12C) of the latent image.
The line pattern image shown in FIG. 13 is prepared. Since these are printed on the other side of the printing medium, they are angles opposite to the screen angles described above. That is, the screen angle of the yellow component (12A) of the latent image is 0.
Therefore, the screen angle of the yellow line pattern image (13A) corresponding to this is 180 degrees (that is, 0 degrees).
Similarly, since the screen angle of the magenta component (12B) of the latent image is 150 degrees, the screen angle of the corresponding magenta line pattern image (13B) is 30 degrees, and the latent image is Since the screen angle of the cyan component (12C) of the applied image is 60 degrees, the screen angle of the cyan line pattern image (13C) corresponding to this is 120 degrees.

The yellow component (12A) of the latent-image-formed image obtained by the method described above, the magenta component (12B) of the latent-image-formed image, and the cyan component (12C) of the latent-image-formed image are shown. As shown in FIG. 14, a semi-transparent substrate (p
1) One side of the printing surface (14A) is printed, and then the yellow line pattern image (13A), the magenta line pattern image (13B), and the cyan line pattern image (13C) are translucent. This printed matter is completed by printing on the other printing surface (14B) of (1) so as to match the printing position of the same one of the above-mentioned ones. When observing the front and back of the printed matter one by one with reflected light, the lines of yellow, magenta, and cyan are on the same screen, so the color of the entire image looks like a single color with uniform density. The color of the latent image that appears when the printed matter is viewed through the light is composited by subtractive color mixture and appears as a color image. FIG. 15 shows FIG.
FIG. 3 shows a state in which a printed matter by the semi-transparent printing medium (p1) is observed with transmitted light. The image (15) synthesized by transmitted light is normally on the surface of the color original image (9). Colors similar to visible colors of yellow (9a) to red (9f) appear. Therefore, in this state, the colors of yellow (15a), magenta (15b), cyan (15c), blue (15d), which appear by seeing through with light,
The green (15e) and the red (15f) can be recognized respectively.

Next, separated images of several colors obtained by process color separation or artificial color coding are prepared in the same manner as above using various screens such as lines and halftone dots, and these numbers are obtained. When printing an image with a latent image of colors and various screen patterns such as lines and halftone dots on the printing medium, it is possible to further forge by printing with the special color ink described below on one or both of the front and back The prevention effect can be enhanced. That is, when printed with the intermediate color special color ink in which the color components of the primary colors of yellow, magenta, and cyan are delicately mixed, the printed matter (16) is printed on the translucent substrate (p2) as shown in FIG. As shown in the enlarged image (s) of the line, the special color ink image line (16a) is printed with a clear outline. When this printed matter (16) is reproduced by process color separation or the like, as shown in FIG. Reproductions (17)
Indicates a yellow halftone dot line (17) as shown in a magnified image (s ') of the line on the translucent printing medium (p2').
Since the three-color image lines of a), the magenta halftone dot line (17b) and the cyan halftone dot line (17c) overlap each other, the sharpness of the image line deteriorates. Therefore, it is possible to make the reproduction of the printed matter of the present invention more difficult by increasing the screen ruling. In addition, when using a functional ink such as a metallic ink that changes the color of the ink depending on the nature of the light source to be observed, it is possible to reproduce different colors when copying with a color copier, so it is easy to copy. It cannot be done and becomes an effective anti-counterfeiting measure.

Image (18) obtained by applying a color latent image (18a) to various screen patterns such as lines and halftone dots shown in FIG.
Then, a camouflage pattern (19) as shown in FIG. 19 is incorporated. As a result, the latent image formed in the state of being observed by reflected light cannot be completely identified by the naked eye.

Further, the semi-transparent object to be printed (p3) shown in FIG.
The color latent image (20
The image (20b) subjected to a) is combined with a normally visible pattern (20c), and the image (20d) not subjected to the latent image on the other printing surface (20B) is provided with another normally visible pattern. Combine (20e). The normally visible pattern (20c) plays a role of camouflage for the color latent image (20a). These are printed so that the printing positions on the front and back sides are the same color and the positional deviation is maintained, and when the printed matter obtained by the semi-transparent printing material (p3) is observed through light, it is transparent as shown in FIG. The image (21) synthesized by light becomes a pattern (21b) having one meaning by combining the normally visible pattern (20c) on the front and back and the normally visible pattern (20e). In addition, since the latent image appears as a color image (21a) having binary or continuous gradation, at this time, two types of image information are printed at the same time. It is also possible to combine the normally visible patterns on the front and back with the color image so that the pattern has one meaning. For example, when expressing a "person's face" with front and back composite printed matter, when printing on each front and back of the printed matter with a different and usually meaningless pattern that can be visually recognized, and observing this printed matter through light, When a possible meaningless pattern is synthesized, it is expressed as a contour line of the "human face", and at the same time, the latent image according to the present invention can be expressed as a colored gradation image of the "human face". As described above, it is possible to provide a front and back pattern synthetic printed material which is effective as a forgery prevention and display.

[0023]

INDUSTRIAL APPLICABILITY The front and back pattern composite printed material of the present invention is characterized in that the front and back patterns are composited when viewed through light and the latent image appears as a color image. When ink is used, a color image with a subtle color change can be expressed. When a spot color ink is used, when the printed matter is subjected to process color separation and halftoning, three color image lines of yellow, magenta, and cyan halftone dot lines are overlapped, so that the screen frequency of the printed matter of the present invention is Therefore, it is difficult to make a copy intentionally because it requires physically high registration accuracy in the plate making and the printing machine used. Further, by using a functional ink that causes a change in the color of the ink depending on the nature of the light source to be observed, it is possible to achieve the effect of reproducing different colors during reproduction by a color copying machine. Further, by using the camouflage pattern, it is possible to make the identification of the latent image difficult, and at the same time, a plurality of image information can appear or be merged. Therefore, it can be used as a printed matter for preventing forgery and alteration of securities, various certificates, important documents, etc., and is also effective as a printed matter for the purpose of producing an artistic effect by producing a color on a display or the like.

[Brief description of drawings]

FIG. 1 is a view showing line pattern images arranged at the same intervals.

FIG. 2 is a diagram showing a latent image pattern image in which the shading of an original image used for a latent image is shifted in a direction perpendicular to a drawing line.

FIG. 3 is a diagram showing an image with continuous gradation that appears when a printed matter printed on the front and back is viewed through light.

FIG. 4 is an enlarged view of an image line showing the principle of image density reproduction when the front and back patterns are combined.

FIG. 5 is a view showing a negative image used in a method for photographic image drawing of a latent image pattern image.

FIG. 6 is a diagram showing a linear screen positive image drawn by a linear screen.

FIG. 7 is a view showing a parallel line screen negative obtained by returning the parallel line screen positive.

FIG. 8 is a diagram showing a state in which a latent image line is formed by superimposing the line-strip screen positive and the line-strip screen negative of FIGS. 6 and 7.

FIG. 9 is a diagram showing a color original image to which various colors used in the present invention are applied.

FIG. 10 is a diagram showing color separation components of a color original image subjected to process color separation.

FIG. 11 is a diagram showing a parallel line screen for applying a color separation component as a latent image.

FIG. 12 is a diagram showing an image line to be printed on one side of an object to be printed having a color separation component as a latent image on a parallel line screen.

FIG. 13 is a diagram showing a line pattern image printed on the other side of the printing medium produced by the line screen.

FIG. 14 is a diagram showing a state in which the images of FIGS. 12 and 13 are printed on the front and back sides of a printing medium.

FIG. 15 is a view showing a state where light is transmitted through a printed matter, as observed from the side opposite to the light source.

FIG. 16 is a diagram showing an image line shape printed by using a special color ink in the image representation method.

FIG. 17 is a diagram showing a state in which a printed matter printed using a special color ink is subjected to process color separation and meshing, and these images are superposed.

FIG. 18 is a diagram showing various screen patterns such as lines, halftone dots, etc., each of which has a latent image composed of several colors.

FIG. 19 is a view showing that a camouflage pattern is combined with various screen patterns such as lines, halftone dots, and the like, each of which has a latent image composed of several colors.

FIG. 20: Various screen patterns such as lines and halftone dots on one side of a printed matter, which are formed of several colors, and lines on the other side, which are not formed of latent images and formed of several colors, halftone dots, etc. FIG. 6 is a view showing that various normally visible patterns are combined with the various screen patterns of FIG.

FIG. 21 is a diagram showing a state in which light is transmitted through a printed material and the printed material is observed from the side opposite to the light source.

[Explanation of symbols]

 A Line pattern image B Latent image pattern image C Image with continuous tone D Negative image with continuous tone E Line screen positive F Line screen negative A'Line pattern image B'Latent image pattern line E ' Line-shaped screen Positive image line F'Line-shaped screen negative image line 1 Highlight part 2 Shadow part 3 Halftone part 4 Part without image line 5 Screen pitch 6 Unmasked part 9 Color original image 9a Normally visible Yellow of color 9b Magenta of normally visible color 9c Cyan of normally visible color 9d Blue of normally visible color 9e Green of normally visible color 9f Red of normally visible color 10A Yellow component of the original image 10B Original image magenta component 10C Original image cyan component 11A Yellow line screen 11B Magenta line Screen 11C Cyan line screen 12A Yellow component of latent image 12B Magenta component of latent image 12C Cyan component of latent image 12a Yellow component of latent image 12b Magenta of latent image Component 12c Cyan component in latent image 12d Blue component in latent image 12e Green component in latent image 12f Red component in latent image 13A Yellow line pattern image 13B Magenta line pattern image 13C Cyan line pattern image 14A Printed One printing surface of the body 14B The other printing surface of the material to be printed 15 Image composed by transmitted light 15a Yellow of the appearance color 15b Appearance of magenta 15c Appearance of the cyan 15d Appearance of the color of blue 15e Appearance Colored green 15f Appeared color red 16 Printed matter 16a Special color 17 Streaks 17 Duplicates 17a Yellow halftone dots 17b Magenta halftone dots 17c Cyan halftone dots 18 Color latent image 18a Color latent image 19 Camouflage pattern 20A One printing surface 20B Other printing surface 20a Color latent image 20b Image with color latent image 20c Pattern that can be seen normally 20d Image without latent image 20e Pattern that can be seen normally 21 Image synthesized with transmitted light 21a Color image 21b Pattern a Screen angle b Screen angle c Screen angle a'Screen angle b'Screen angle c'Screen angle p1 Semi-transparent substrate p2 Semi-transparent substrate p2 'Duplicate semi-transparent substrate p3 Semi-transparent substrate s Enlarged image s '' Enlarged image of the line

Claims (12)

[Claims] 1. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color classification is applied as latent images to various screen patterns such as lines and halftone dots for each color, An image with these three latent images is printed with a process ink on either one of the front and back sides of a material that transmits light, and the other is not printed with a latent image. The front and back pattern composite printed material in which a latent image appears as a color image, which is obtained by printing the various screen patterns described in 1 above with a printing position of the same printing color on one side with a process ink. 2. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color classification is applied as latent images to various screen patterns such as lines and halftone dots for each color, An image with these three latent images is printed with a process ink on either one of the front and back sides of a material that transmits light, and the other is not printed with a latent image. 2. A method for producing a front and back pattern synthetic printed material in which a latent image appears as a color image, characterized in that various screen patterns are printed with a process ink in alignment with the printing positions of the same one of the above-mentioned printing colors. 3. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color classification is applied as latent images to various screen patterns such as lines and halftone dots for each color, A camouflage pattern is combined with the image with these three latent images and printed with process ink on either the front or back side of the printing material that transmits light, and the other is used for each of the above-mentioned colors without the latent image. A front and back pattern composite printed product in which a latent image appears as a color image, wherein various screen patterns such as lines and halftone dots are printed with process ink in combination with the printing position of the same printing color on the one side. 4. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color classification is applied as latent images to various screen patterns such as lines and halftone dots for each color, A camouflage pattern is combined with the image with these three latent images and printed with process ink on either the front or back side of the printing material that transmits light, and the other is used for each of the above-mentioned colors without the latent image. A method for producing a front and back pattern composite printed matter in which a latent image appears as a color image, characterized in that various screen patterns such as lines and halftone dots are printed with process ink in combination with the printing position of the same printing color on the one side. . 5. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color coding is applied as latent images to various screen patterns such as lines and halftone dots for each color, A camouflage pattern is combined with the image with these three latent images and printed with process ink on either the front or back side of the printing material that transmits light, and the other is used for each of the above-mentioned colors without the latent image. A latent image characterized by combining different screen patterns such as lines and halftone dots with another camouflage pattern and printing with process ink at the same printing position of the same printing color appears as a color image. Front and back pattern synthetic printed material. 6. A yellow, magenta, and cyan three-color separated image obtained by process color separation or artificial color coding is applied as a latent image to various screen patterns such as lines and halftone dots for each color, A camouflage pattern is combined with the image with these three latent images and printed with process ink on either the front or back side of the printing material that transmits light, and the other is used for each of the above-mentioned colors without the latent image. A latent image characterized by combining different screen patterns such as lines and halftone dots with another camouflage pattern and printing with process ink in alignment with the same printing color printing position on one side appears as a color image. Method for producing front and back pattern synthetic printed matter. 7. A multi-color separated image obtained by process color separation or artificial color coding is applied as a latent image to various screen patterns such as lines and halftone dots for each color, and the latent image of these several colors is formed. An image is printed with a special color ink or a functional ink on either the front or back side of the substrate that transmits light, and the other is not printed with a latent image. Various screen patterns are printed with a special color ink or a functional ink in combination with the printing position of one of the same printing colors, and a latent image appears as a color image. 8. A plurality of color separation images obtained by process color separation or artificial color coding are applied as latent images to various screen patterns such as lines and halftone dots for each color, and the latent images of these several colors are displayed. An image is printed with a special color ink or a functional ink on either the front or back side of the substrate that transmits light, and the other is not printed with a latent image. 2. A method for producing a front and back pattern synthetic printed material in which a latent image appears as a color image, characterized in that the various screen patterns are printed with a special color ink or a functional ink in combination with the printing positions of the same printing color on the one side. 9. A latent image of several colors obtained by subjecting each color of the separated images of several colors obtained by process color separation or artificial color coding to various screen patterns such as lines and halftone dots. Combine the camouflage pattern with the image and print with a special color ink or functional ink on either the front or back side of the printing material that transmits light, and use the other for each of the above colors without the latent image. Various screen patterns such as lines and halftone dots were printed with special color ink or functional ink in combination with the printing position of the same printing color on one side, and a latent image appears as a color image. Printed matter. 10. A separation image of several colors obtained by process color separation or artificially color-coding a line for each color,
It is applied as a latent image on various screen patterns such as halftone dots, and the camouflage pattern is combined with the image on which these latent images of several colors are combined, and a special color ink or a functional ink is applied to either the front or back side of the printing material that transmits light. Printed on the other side, and the other side without a latent image. Various screen patterns such as lines and halftone dots used for each of the above colors are combined with the printing position of the same printing color on the one side with a special color ink or a functional ink. A method for producing a front and back pattern synthetic printed material in which a latent image characterized by printing appears as a color image. 11. A separation image of several colors obtained by process color separation or artificial color classification
It is applied as a latent image on various screen patterns such as halftone dots, and the camouflage pattern is combined with the image on which these latent images of several colors are combined, and a special color ink or a functional ink is applied to either the front or back side of the printing material that transmits light. Printed on the other side, the other lines that have not been subjected to a latent image are used for each of the above-mentioned lines, various screen patterns such as halftone dots are combined with another camouflage pattern,
A front and back pattern composite printed material in which a latent image appears as a color image, which is printed with a special color ink or a functional ink in combination with the printing position of one of the same printing colors. 12. A separation image of several colors obtained by process color separation or artificially color-coding,
It is applied as a latent image on various screen patterns such as halftone dots, and the camouflage pattern is combined with the image on which these latent images of several colors are combined, and a special color ink or a functional ink is applied to either the front or back side of the printing material that transmits light. , And the other is not latent imaged.Camouflage pattern is combined with various screen patterns such as lines and halftone dots used for each of the above-mentioned colors, and it is aligned with the printing position of the same printing color on the one side. A method for producing a front and back pattern synthetic printed material in which a latent image appears as a color image, which is characterized by printing with a special color ink or a functional ink.