JP6263810B2 - Transparent pattern printed matter - Google Patents

Description

  In the field of valuable printed matter such as banknotes, passports, securities, identification cards, cards, and passports, which are security printed matters that require an anti-counterfeit effect, the present invention provides an image under reflected light and transmitted light. This relates to a transparent pattern printed matter in which the color of the part changes.

  With recent developments in digital devices such as scanners, printers, and color copiers, it has become possible to easily produce elaborate copies of precious printed matter. Therefore, in order to prevent duplication and forgery as described above, various anti-counterfeit technologies that cannot be reproduced by a printer or a copier are required.

  As one of the anti-counterfeiting techniques, there is a so-called watermarking technique in which a pattern is formed by the thinness of the paper and the density of the fibers so that the pattern is visually recognized under transmitted light. This watermark technology is a technology that can authenticate in any environment as long as there is more than a certain amount of light, and it is also a classic technology that has existed since ancient times because it is well known. Nevertheless, it is still used on banknotes around the world.

  Since the watermark technology must be formed at the paper manufacturing stage, it cannot be manufactured by a paper manufacturer. In addition, even if the paper manufacturer manufactures it, there is a problem that the manufacturing cost increases. As a method for reproducing the image, there is a forgery prevention technique in which a transmission image corresponding to the watermark is formed by printing using a special penetrating ink in a printing process (see, for example, Patent Document 1).

  However, with regard to anti-counterfeiting technology using watermark printing that authenticates a transmitted image such as a watermark under transmitted light using penetrating ink, penetrating ink itself is commercially available from many manufacturers, Since it is also readily available, there is a problem that it is easy for a counterfeiter to produce.

  In order to solve such a problem, the present applicant has already been able to form a printed image by using two inks having different transmittances as a pair of inks that are observed in the same color under reflected light. An application has been filed for a transparent latent image printed matter that is excellent in authenticity determination and anti-counterfeiting effect formed by forming a reflection image and a transmission image (see, for example, Patent Document 2 and Patent Document 3).

  Further, the present applicant is a printed matter that forms an image with a special and complicated halftone dot composition, using a colored penetrating ink in which a coloring pigment is mixed with a penetrating ink and a reflective ink having the same color as the colored penetrating ink as a pair ink. An application has already been filed for a transmission latent image printed matter characterized in that an image observable under reflected light and an image observable under transmitted light are different images having no correlation at all (for example, see Patent Document 4).

JP-A-6-228900 Japanese Patent No. 5230557 Japanese Patent No. 5315580 JP 2012-223905 A

  Since all the techniques described in Patent Document 2 to Patent Document 4 are techniques that use two inks, a colored ink and a colored penetrating ink of the same color, to express one color, a plurality of different colors are assumed. In order to produce a transparent latent image printed matter having the same number of colored penetrating inks as the number of colors is required. Therefore, the number of inks used is the number of “colors × 2”. If the printed pattern (3) is composed of three colors having different hues of red, blue, and yellow, and each color is divided into different colors under transmitted light and can be observed, the printed pattern ( 3) "3 colors x 2" and 6 colors of ink are required only to form 3). In this case, if this is not a 6 color printing machine equipped with 6 printing units, this printing pattern (3) is required only once. There was a problem that could not be formed.

  On the other hand, the number of colors of ink that can be used at one time by a printing machine is naturally limited. For example, when a four-color printing machine is used to print a security print, this latent image is printed. Therefore, it is necessary to use the same color pair ink, and the units of two colors are occupied by the same color ink. Therefore, there has been a problem that it is practically limited to a single color configuration.

  In addition, the color matching inks used in the techniques described in Patent Documents 2 to 4 are required to have extremely light colors in order to enhance the effects of the respective techniques. When the equi-colored pair inks are extremely light colors, other printing elements required for security prints other than the latent image, for example, background patterns and coloring patterns, characters, marks, symbols, and descriptions, etc. Diversion is also difficult. For this reason, when a general four-color printing machine is used, at least two printing cylinders of the printing machine are occupied by such a dedicated pair ink. All need to be formed.

  Of course, even if a security print is given priority to functions, the number of colors on the print is large, and it is of course more attractive to have a colorful expression. As described above, it is necessary to use two types of extremely light ink that cannot be diverted, which is a great burden on the color design of the entire security print.

  The present invention aims to solve the above-described problems, and is a printed matter having a printed pattern that can be observed in the same color under reflected light and partially changes in color under transmitted light, and the color is limited to a light density. Therefore, a transparent pattern printed matter having a high degree of freedom in design and manufacturing is provided. Furthermore, even if the number of colors of the printed pattern increases, a transparent pattern printed matter that can be formed with the number of “number of colors + 1” ink using one kind of colored penetrating ink is provided.

  The transmissive pattern printed matter of the present invention comprises a printed pattern composed of a superimposed region of the same color and a first region under reflected light in at least a part of the light-transmitting region on the base material. The second region, which has higher brightness under reflected light than the first region, and the permeation region that is the same shape and the same size as the second region and is made of colored penetrating ink are laminated to transmit light. Below, it is characterized in that the superposed region has a lighter color than the first region due to a difference in light transmittance with the first region, and the printed pattern can be visually recognized.

  In addition, the saturation of the second region of the transmissive pattern printed matter is higher than that of the first region.

  Further, the brightness of the permeation region of the transmissive pattern printed material is a difference in brightness between the first region and the second region.

  Further, the transmissive pattern printed matter includes a plurality of printed patterns having different colors under reflected light, and the penetrating areas of the plurality of printed patterns are formed of the same chromatic colored penetrating ink, and each of the plurality of printed patterns has. The color has a color component in common with the color of the chromatic color.

  In the case of forming a printed pattern having a plurality of different colors, the transparent pattern printed matter of the present invention does not use a pair ink for each color as in the prior art, but an ink that forms a colored image, and a transmission effect. Since the ink has a structure in which the role of the ink is completely divided, it is sufficient that the number of “colors + 1” is used instead of the number of “colors × 2” as in the prior art. For this reason, it has become easier to make the printed pattern a multi-color structure than the conventional technique.

  Since the transparent pattern printed matter of the present invention exhibits a sufficient effect even if the density is not extremely light, the color of the printed pattern can be designed freely. Further, at least one of the paired inks can be a general colored ink having a normal density. Therefore, the colored ink on which the printed pattern is formed can be diverted to an area other than the printed pattern in the security printed matter, and the entire security printed matter can have a colorful design.

  The transparent pattern printed matter formed by the above method can be manufactured by offset printing which is a highly productive printing method, so it has excellent cost performance, and even if the latest digital equipment is used, it is impossible to reproduce the transmitted image Therefore, the anti-counterfeiting effect is excellent. Moreover, since it can authenticate only by seeing through without using a special tool, it is excellent in distinguishability.

The transparent pattern printed matter in this invention is shown. The outline | summary of a structure of the transparent pattern printed matter in this invention is shown. An example of the layer structure of the transparent pattern printed matter in this invention is shown. (A1) and (a2) show images in which the transmissive pattern printed matter in the present invention is visually recognized under reflected light, and (b1) and (b2) show the transmissive pattern printed matter in the present invention under visible light. An image is shown. The transparent pattern printed matter in this invention is shown. The outline | summary of a structure of the transparent pattern printed matter in this invention is shown. (A1) and (a2) show images in which the transmissive pattern printed matter in the present invention is visually recognized under reflected light, and (b1) and (b2) show the transmissive pattern printed matter in the present invention under visible light. An image is shown.

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

  In FIG. 1, the transparent pattern printed matter (1) in this invention is shown. The transparent pattern printed matter (1) is formed by forming a printed pattern (3) having a color different from that of the substrate (2) in at least a part of the region (Z) on the substrate (2).

  At least a part of the region (Z) on the base material (2) constituting the transmissive pattern printed matter (1) in the present invention has a property of transmitting light, such as high-quality paper, coated paper, transparent film, and plastic, It is necessary to have so-called light transmittance. With opaque plastic or metal, the effect under transmitted light cannot be obtained. There is no restriction | limiting in particular about the color of a base material (2) or a printed pattern (3). Moreover, as long as the area | region (Z) in which the printed pattern (3) is formed has a light transmittance, the base material (2) may not have a light transmittance, Furthermore, a base material ( 2) The optical fiber itself may have optical transparency. Hereinafter, it demonstrates that base material (2) itself has a light transmittance.

  FIG. 2 shows an outline of the configuration of the printed pattern (3). The printed pattern (3) has a first area (4) and an overlapping area (5). In the present embodiment, the printed pattern (3) represents the entire cherry blossom petals, the first region (4) represents three petals, and the overlapping region (5) represents two petals. The print pattern (3) may be any color other than transparent as long as it has a color different from that of the base material (2).

  In the present invention, “color” represents a color including the concept of hue, saturation and lightness, and “hue” described later refers to a color aspect such as red, blue, and yellow. Yes, specifically, the intensity distribution of a specific wavelength in the visible light region (400 to 700 nm) is shown. In the present invention, `` the hue is the same '' means that the colors of red, blue, yellow and the like match in the two colors, and the distribution of the intensity of the wavelength in the visible light region has a correlation in the two colors, Description is omitted.

  Under the reflected light, the first region (4) and the overlapping region (5) are observed in the same color. The term “equal color” as used in the present invention refers to a state in which two colors are close enough to be perceived as the same color when an observer takes a glance at an area without paying attention. Specifically, the color difference ΔE up to a numerical value of 9 or less is defined as the same color in the present invention.

  The first region (4) and the overlapping region (5) have different inks. The first region (4) is formed by only ordinary coloring inks having a color different from that of the base material (2) except for transparent, and one overlapping region (5) is a superposition of two different colors of ink. Formed by.

  The first area (4) is a so-called solid print with a dot area ratio of 100%, or an image or a line (a straight line, a curved line, a wavy line, a dotted line or a broken line) having a halftone to low highlight dot area ratio. You may form by a parting line etc.). Since the same applies to each region constituting the printed pattern (3) described in the following embodiments, the description thereof is omitted.

  As shown in FIG. 2, the overlapping area (5) of the printed pattern (3) is formed by overlapping the permeation area (6) and the second area (7). The permeation region (6) and the second region (7) have the same shape and the same size as the overlapping region (5), respectively. One first region (4) does not overlap with the infiltration region (6).

  Since the first area (4) and the overlapping area (5) of the printed pattern (3) need to have the same color under reflected light, the penetrating area (6) and the second area (7) When the color is superimposed, it is necessary to design the color so as to be the same color as the first region (4). Specifically, the color of the penetration region (6) and the color of the second region (7) When subtractive color is mixed, it is necessary to have a configuration that is the same as the color of the first region (4).

  The penetrating region (6) needs to have a color other than transparent, and needs to be formed with a colored penetrating ink using an ink obtained by mixing a coloring dye or a coloring pigment with penetrating ink. Colored penetrating ink is formed by mixing a coloring material with penetrating ink containing penetrating components that have the effect that the printed area can be seen through under transmitted light (lightness is observed to be higher than the non-printed area). Ink. The colored penetrating ink will be specifically described below.

  This colored penetrating ink, when printed on the substrate (2), can form a region having a clearly visible color under reflected light, while changing the region extremely lightly under transmitted light. Has an effect. In other words, it is an ink having an effect of “the area looks lighter when seen through” as compared with a normal colored ink. Colored penetrating ink is composed of penetrating component and color material, and the penetrating component suppresses the scattering of light inside the base material (2), thereby realizing the effect of making the region appear light. doing.

  If the penetrating component has a performance equivalent to that of ink that is generally sold as watermark ink, a certain amount of coloring material is mixed to make a colored penetrating ink that has the effect of “lightly sees the area lightly” Is possible. As the color material to be mixed with the colored penetrating ink, a printing color material sold as a color pigment or a color dye may be used. For the purpose of distributing to the market as printed matter, it is desirable to use a color pigment that is easy to obtain long-term fastness.

  The penetrating component in the present invention refers to a component that functions to increase the transmittance of the printing region by penetrating into the paper during printing. Specifically, the refractive index of cellulose (1.49) Refers to resin, wax, animal and vegetable oils, etc. These components fill the gaps between the cellulose fibers present in the paper when printed, and serve to increase light transmittance mainly by suppressing light scattering inside the paper.

  Moreover, when the color of the colored penetrating ink is an achromatic color from gray to black, the color change during transmission is the largest. The area formed with colored penetrating ink has the effect of increasing the brightness when seen through, but it does not have the effect of changing the hue, so the area formed with blue colored penetrating ink changes to light blue when seen through, Under the light, bluish color is always visible, and it does not reach the effect of completely erasing the area.

  However, in the case of gray or black, which is an achromatic color, the color is expressed only by the difference in lightness, so if the lightness of the area increases during transmission, no color remains, and if the conditions are met, the entire area disappears The effect up to can be realized. As described above, even if the entire region does not disappear, the color change when the color of the colored penetrating ink is changed from gray to black is felt to be extremely large compared to the chromatic color. It is more desirable to enhance the effect of the invention.

  The “penetrating ink” in the present invention refers to an ink that contains the aforementioned penetrating component and is sold mainly as a watermark ink. Examples of such ink include T & K TOKA Co., Ltd. Best One Watermark Ink, Teikoku Ink Co., Ltd. Unimark, Toyo Ink Co., Ltd. SMX Watermark Ink, Joint Ink Co., Ltd. E2 Varnish, and the like. In addition, even transparent inks such as gloss varnish and overcoat varnish exhibit a certain penetration effect if the viscosity is low. The colored penetrating ink of the present invention can also be produced using these inks. The above is the description of the colored penetrating ink.

  The first region (4) and the overlapping region (5) have the same color under reflected light, and the penetrating region (6) which is one of the two regions constituting the overlapping region (5) is Because of having a color other than transparent, the second region (7) needs to have a color with a higher brightness than the first region (4). This is because a color that is obtained by subtractively mixing the two colors is always a color with low brightness, resulting in a color with low brightness.

  Therefore, when both the permeation region (6) and the second region (7) constituting the overlapping region (5) are chromatic, the second region (7) is more than the first region (4). Unless the lightness is high, it is impossible to make the first region (4) and the overlapping region (5) the same color when the second region (7) and the permeation region (6) overlap. It is.

  In addition, when the penetration area | region (6) and 2nd area | region (7) which comprise a superimposition area | region (5) are all achromatic colors, such as gray and black, there is no influence of saturation. Therefore, it is not necessary to make the brightness of the second region (7) higher than that of the first region (4). However, if one of the two colors is a chromatic color, naturally, the subtractive color mixture between different colors also reduces the saturation, so the second region (7) is more than the first region (4). Use highly saturated colors.

  There is no restriction on the stacking order of the second region (7) and the permeation region (6), but depending on the permeation component used in the permeation region (6), the overprinted ink may not be accepted and a trapping failure may occur. Therefore, as shown in FIG. 3, it is desirable to print in the order in which the permeation region (6) is superimposed on the second region (7) formed on the substrate (2).

  In addition, the first region (4) and the second region (7) have different brightness under reflected light, but this is formed using the same ink but using completely different ink. May be. For example, the first region (4) may be formed using ink with low lightness, and the second region (7) may be formed using ink with high lightness.

  On the other hand, considering realistic production, the number of inks used to form the printed pattern (3) should be naturally small from the viewpoint of cost and management, so it is better to change the area ratio using the same ink. The difference in brightness between the first region (4) and the second region (7) may be expressed. For example, even when the same ink is used, the first region (4) is configured with a high area ratio to form low brightness, and the second region (7) is configured with a low area ratio to form high brightness. You may do it.

  As another method, the first region (4) and the second region (7) are formed with the same area ratio using the same ink, and different colors are formed only on the first region (4). The brightness of the first region (4) may be lowered by superimposing these inks to express the difference in brightness between the first region (4) and the second region (7). For example, after forming the first region (4) and the second region (7) with the same color using the same ink, the first region (4) and the second region (7) using the normal colored ink having the same color as the permeation region (6) The brightness of the first region (4) may be lowered by printing over the region (4).

  In addition, the brightness of the permeation region (6) formed with the colored penetrating ink is set to the lightness corresponding to the difference in brightness between the first region (4) and the second region (5). 4) and the second region (5) have the same color under reflected light. If the lightness of the first region (4) is L * of 50 and the lightness of the second region (5) is L * of 70, the lightness of the permeation region (6) is L corresponding to the difference. * 20. By setting the lightness L * 20 of the permeation region (6) to a lightness corresponding to the difference between 50 in the lightness L * of the first region (4) and 70 in the lightness L * of the second region (5), When the second region (5) is printed over the permeation region (6), the first region (4) and the overlapping region (5) are visually recognized with the same color under reflected light by subtractive color mixing. Is possible.

  The effect of the transparent pattern printed material (1) formed with the above configuration will be described with reference to FIG. As shown in FIG. 4 (a1), when the transmissive pattern printed matter (1) is observed under reflected light, the observer (9) has the same color for the first region (4) and the overlapping region (5). The entire printed pattern (3) is visually recognized with the same color.

  As shown in FIG. 4 (b1), when the transmissive pattern printed matter (1) is observed under transmitted light, the observer (9) has a first region (4) and a superimposed region (5). The printed pattern (3) is divided and visually recognized in different colors. Specifically, the first region (4) is visually recognized with a color with low brightness, and the superimposed region (5) is visually recognized with a color with higher brightness.

  As described above, in the transparent pattern printed matter (1) of the present invention, the first region (4) and the overlapping region (5) in the printed pattern (3) have the same color or the first region depending on the observation conditions. There is an effect that the region (4) and the overlapping region (5) have different colors.

  In the present invention, “observation under reflected light” means that, as shown in FIG. 4 (a2), the observer's viewpoint (9) is in a region where there is almost no specularly reflected light from the light source (8). FIG. 4 (b2) shows the situation where the transmissive pattern printed matter (1) is observed under visible light, and “observation under transmitted light” in the present invention means The viewpoint (9) is in the region under the transmitted light of the light source (8), and shows the situation in which the transmissive pattern printed matter (1) is observed.

  The greatest feature of the transmissive pattern printed matter (1) in the first embodiment of the present invention is that two regions having different brightness and darkness, that is, a first region (4) having a low lightness color and a second region having a high lightness color. The overlapping region (5) formed by superimposing the penetrating region (6) made of colored penetrating ink having a hue different from that of the two regions on the first region (4) having a low lightness in the region (5). ) To be the same color as the first region (4) having a low brightness. Two main reasons for forming the uniform color print pattern (3) using non-equal color inks will be described below.

  One of the two reasons for forming the uniform color print pattern (3) using non-isochromatic ink will be described below. As described in the problem to be solved by the invention, when the print pattern (3) is formed with the same color pair ink as in the conventional case, if the print pattern (3) is expressed by a plurality of different colors, the "number of colors" X2 "number of inks are required.

  On the other hand, if the configuration of the present invention is used, the same printing pattern can be configured with the number of “number of colors + 1 (colored penetrating ink)”. If the print pattern (3) is composed of colors having different hues of red, blue and yellow, and each color is divided into different colors and can be observed under transmitted light, then “three colors + 1” The same printed pattern (3) can be configured with four color inks of “color (colored penetrating ink)” and can be printed with a four-color printing machine. In addition, since fewer types of ink are used than in the conventional configuration described above, there are advantages in that the cost is reduced and the load of quality control is reduced. This is one of the reasons for using non-equal color inks instead of using the same color pair ink as in the prior art. If the printed pattern (3) having the same number of colors is expressed, the number of colors is particularly large. The characteristics can be utilized.

  Subsequently, another reason among the two reasons for configuring the uniform color print pattern (3) using non-equal color inks will be described below. When printing the latent image prints cited in Cited Document 2 to Cited Document 4, all of the color matching inks used are extremely light in density, so it is difficult to divert them to other parts than the latent image. Furthermore, since the dedicated pair ink occupies at least two printing cylinders of the printing press, the number of colors that can be used other than the latent image is limited, which is great in designing the color of the entire security print. It was a restriction.

  In the present technology, in forming the printed pattern (3), a normal colored ink used for forming the first region (4) and the second region (7) and a colored penetrating ink used for forming the penetrating region (6). Does not have to be the same not only in color but also in hue, and has solved this problem by using unequal color inks of completely different colors.

  Specifically, two inks are used as an ink for forming a colored image which is the first region (4) and the second region (7), and an ink having a transmission effect for forming the permeation region (6). Each role is completely divided, and the ink that forms at least one of the non-equal color inks that respectively form the first region (4) and the second region (7) is replaced with a normal colored ink. By using ink with the same density as general ink, this ink can be used for other printed elements other than the printed pattern (3), ground pattern and color pattern, characters, marks, symbols, and descriptions. It became possible to divert to matters. By using such a configuration, the printing cylinder is more than one cylinder as compared with the conventional technique, and therefore any other color can be used. This is another reason for using non-equal color inks.

  When forming the transparent pattern printed matter (1) of the present invention, a fluorescent pigment or a fluorescent dye is used for the purpose of ascertaining the occurrence of reprinting or printing defects in each ink or for the purpose of improving authenticity discrimination. There is no problem if functional materials such as luminescent pigments such as phosphorescent pigments and phosphorescent pigments, luminescent dyes, infrared absorbing materials and infrared reflecting materials are added.

  The printing method of the transparent pattern printed matter (1) of the present invention exhibits a sufficient effect by offset printing, but may be formed by flexographic printing, gravure printing, intaglio printing, screen printing, etc. according to the manufacturer's seeds. Alternatively, it may be formed using IJP or a laser printer. Moreover, there is no problem even if the first area (4) and the second area (7) are formed using a printer and only the penetrating area (6) is formed by printing.

The transparent pattern printed matter (1) in the first embodiment is a simple printed pattern (3) composed of a single color, but in the second embodiment, a rich color composed of multiple colors. A transparent pattern printed matter (1) of the printed pattern (3) will be described.
(Second embodiment)

  In FIG. 5, the transparent pattern printed matter (1 ') in 2nd embodiment is shown. The transparent pattern printed matter (1 ′) has a plurality of colors different from the base material (2 ′) under reflected light in at least a part of the light-transmitting region (Z ′) on the base material (2 ′). A printed pattern (3 ') is formed.

  FIG. 6 shows an outline of the printed pattern (3 ′). The printed pattern (3 '), in which three cherry blossom patterns consisting of five petals are arranged, is the first printed pattern (3a') consisting of the first color and the second printed pattern consisting of the second color. (3b ′) and a third printed pattern (3c ′) composed of a third color, and a set of three different colored cherry blossom patterns. Thus, the printed pattern (3 ′) is formed by arranging a plurality of printed patterns (3a ′, 3b ′, 3c ′) of different colors.

  Each of the first color, the second color, and the third color may be completely different colors that have different hues as well as lightness. The print pattern (3 ′) as a whole has three different colors of the first color, the second color, and the third color, but the first print pattern (3a) constituting the print pattern (3 ′). '), The second printed pattern (3b'), and the third printed pattern (3c ') are composed of a single color in each pattern. That is, the first printed pattern (3a ′) is composed entirely of the first color, and the second printed pattern (3b ′) is composed entirely of the second color. In 3c ′), the entire pattern consists of only the third color.

  In addition, each printed pattern (3a ′, 3b ′, 3c ′) has a permeation region (6a ′, 6b ′, 6c ′), a first region (4a ′, 4b ′, 4c ′) and a first region. It consists of two regions (7a ', 7b', 7c '). The first region (4a ′, 4b ′, 4c ′) and the second region (7a ′, 7b ′, 7c ′) that form a pair have the same hue, and the second region (7a ′, 7b ′, 7c ′) is a region having higher brightness than the first region (4a ′, 4b ′, 4c ′).

  That is, the first region (4a ′) and the second region (7a ′) in the first printed pattern (3a ′) of the first color have the same hue and the second region (7a ′). ) Has a higher brightness than the first region (4a ′). The first region (4b ′) and the second region (7b ′) in the second printed pattern (3b ′) of the second color have the same hue and the second region (7b ′). ) Has a higher brightness than the first region (4b ′). Further, the first region (4c ′) and the second region (7c ′) in the third printed pattern (3c ′) of the third color have the same hue and the second region (7c ′). ) Has a higher brightness than the first region (4c ′).

  On the other hand, the permeation areas (6a ′, 6b ′, 6c ′) are all composed of the same single color. Each penetration region (6a ′, 6b ′, 6c ′) has the same shape and the same size as the paired second region (7a ′, 7b ′, 7c ′), and each penetration region ( 6a ′, 6b ′, 6c ′) and the second pair of regions (7a ′, 7b ′, 7c ′) are completely overlapped to form overlapping regions (5a ′, 5b ′, 5c ′), respectively. .

  In this way, when the printed pattern (3 ′) is composed of a plurality of different colors, the permeation areas (6a ′, 6b ′, 6c ′), all of which have the same color, correspond to the second areas (7a ′, 7b). ', 7c'), it is necessary to have the same color as the first region (4a ', 4b', 4c '), so that the color of the permeation region (6a', 6b ', 6c') And the colors of the respective second regions (7a ′, 7b ′, 7c ′) have a color relationship that becomes the first color, the second color, and the third color, respectively. Need to be. For this reason, a common color component is necessary for the first color, the second color, and the third color, and the common color component is used as the color of the permeation region (6a ′, 6b ′, 6c ′). There is a need to.

  For example, when the first color is orange, the second color is green, and the third color is yellow, since the color component common to each color is yellow, the permeation regions (6a ′, 6b ′, 6c ′) may be a yellow color, and the colors of the second regions (7a ′, 7b ′, 7c ′) are orange for the first color, green for the second color, If the third color is a color obtained by subtracting the yellow color component from yellow, that is, pink, light blue, or slightly light yellow, the required color relationship can be satisfied.

  In addition, as a specific procedure of actual color design, the first color, the second color, and the third color are not determined first as described above, but each second region (7a ′ , 7b ′, 7c ′) is smoother. Specifically, first, the color of the second region (7a ′, 7b ′, 7c ′) is arbitrarily determined, and then the color of the penetration region (6a ′, 6b ′, 6c ′) is arbitrarily determined. Finally, the colors obtained by subtracting the colors of the respective second areas (7a ′, 7b ′, 7c ′) and the permeation areas (6a ′, 6b ′, 6c ′) are subtracted from the first color and the second color, respectively. The third color. This is the easiest method. Such color component design can be easily performed by using general paint-based image processing software (for example, Photoshop: registered trademark manufactured by Adobe Systems Inc.).

  The effect of the present invention is most enhanced when the color of the penetrating region (6a ′, 6b ′, 6c ′) is the color that maximizes the effect of the colored penetrating ink, that is, the gray to black color that is an achromatic color. It is. When an achromatic color is used for the color of the permeation area (6a ′, 6b ′, 6c ′), the first color, the second color, which are the colors of the second area (7a ′, 7b ′, 7c ′), Although there is a restriction that the third color cannot be designed with high saturation, any hue can be applied to each of the first, second, and third colors. The degree of freedom of selection is also increased, and achromatic colored penetrating inks are desirable because they have the greatest lightness change and therefore the largest color change during transmission.

  The effect of the transparent pattern printed matter (1 ′) formed with the above configuration will be described with reference to FIG. As shown in FIG. 7 (a2), when the printed pattern (3 ′) of the transmissive pattern printed matter (1 ′) is observed under reflected light, the observer (9 ′) is as shown in FIG. 7 (a1). In addition, the first region (4a ′) and the overlapping region (5a ′) in the first printed pattern (3a ′) are visually recognized as the same color in the first color, and the second printed pattern (3b ′). The first region (4b ') and the overlapping region (5b') are visually recognized as the same color in the second color, and the first region (4c ') in the third printed pattern (3c') The overlapping area (5c ′) is visually recognized as the third color.

  Further, as shown in FIG. 7 (b2), when the printed pattern (3 ′) of the transmissive pattern printed matter (1 ′) is observed under transmitted light, the observer (9 ′) is shown in FIG. 7 (b1). As shown, the first region (4a ′) in the first printed pattern (3a ′) and the overlapping region (5a ′) are visually recognized in different colors, and the first region in the second printed pattern (3b ′). One region (4b ′) and the overlapping region (5b ′) are visually recognized in different colors, and the first region (4c ′) and the overlapping region (5c ′) in the third printed pattern (3c ′) are Visible in different colors. Specifically, each of the first regions (4a ′, 4b ′, 4c ′) has a color with low brightness, and each of the overlapping regions (5a ′, 5b ′, 5c ′) has a color with higher brightness, The printed pattern (3 ′) is visually recognized in a divided manner.

  As described above, the transparent pattern printed matter (1 ′) according to the present invention has each of the printed patterns (3 ′) in accordance with the observation conditions even when the printed pattern (3 ′) is composed of different colors. The first region (4a ', 4b', 4c ') and the overlapping region (5a', 5b ', 5c') are the same color or overlap with the first region (4a ', 4b', 4c ') The region (5a ′, 5b ′, 5c ′) has an effect of becoming a different color.

  Hereinafter, although the Example of the transparent pattern printed matter produced specifically according to the form for implementing the above-mentioned invention is described in detail, this invention is not limited to this Example.

  This embodiment will be described with reference to FIGS. 5 to 7 as in the second embodiment. FIG. 5 shows a transparent pattern printed matter (1 ′) in Example 1. The transparent pattern printed matter (1 ′) is formed by forming a printed pattern (3 ′) having a plurality of different colors of red, blue, and yellow on a base material (2 ′). The colors of red, blue and yellow are slightly low in brightness and slightly low in saturation. For the base material (2 ′), general white fine paper (Shiraoi, Nippon Paper Industries Co., Ltd.) was used.

  As shown in FIG. 6, the printed pattern (3 ′) includes a red first printed pattern (3a ′), a blue second printed pattern (3b ′), and a yellow pattern. And a third printed pattern (3c ′) of three different colored patterns.

  In addition, each printed pattern (3a ′, 3b ′, 3c ′) has a permeation region (6a ′, 6b ′, 6c ′), a first region (4a ′, 4b ′, 4c ′) and a first region. It consists of two regions (7a ', 7b', 7c '). The first region (4a ′, 4b ′, 4c ′) and the second region (7a ′, 7b ′, 7c ′) that form a pair have the same hue, and the second region (7a ′, 7b ′, 7c ′) is a color having a higher brightness than the first region (4a ′, 4b ′, 4c ′). Specifically, all the permeation regions (6a ′, 6b ′, 6c ′) were achromatic gray and formed using the colored permeation ink shown in Table 1. When the reflection density of the permeation areas (6a ′, 6b ′, 6c ′) was measured in advance, the black component had a reflection density of 0.15. Therefore, each first area (4a) was measured using image processing software. The color obtained by subtracting the black component by 0.15 minutes from the reflection density of red, blue, and yellow, which is the color of '4b', 4c '), is the color of each second region (7a', 7b ', 7c'). Colored. That is, the second regions (7a ′, 7b ′, 7c ′) are light red, light blue, and light yellow.

  The first area (4a ′, 4b ′, 4c ′) and the second area (7a ′, 7b ′, 7c ′) that have been color-designed as described above are color laser printers (IPCO SP C820 manufactured by Ricoh Co., Ltd.). Printing was performed, and penetrating regions (6a ′, 6b ′, 6c ′) having the same shape were formed on the second regions (7a ′, 7b ′, 7c ′) at a dot area ratio of 100% by offset printing.

  The effect of the transparent pattern printed matter (1 ′) formed with the above configuration will be described with reference to FIG. As shown in FIG. 7A, when the printed pattern (3 ′) of the transmissive pattern printed matter (1 ′) is observed under reflected light, the observer (9 ′) has the first printed pattern (3a ′ ) In the second printed pattern (3b ′) and the overlapping region (5b), the first region (4a ′) and the overlapping region (5a ′) in FIG. ') Was visually recognized in the same blue color, and the first region (4c') and the overlapping region (5c ') in the third printed pattern (3c') were visually recognized in the same yellow color.

  In addition, as shown in FIG. 7B, when the printed pattern (3 ′) of the transmissive pattern printed matter (1 ′) is observed under transmitted light, the observer (9 ′) receives the first printed pattern ( The first area (4a ′) in 3a ′) is red, the overlapping area (5a ′) is visually recognized in light red, and the first area (4b ′) in the second printed pattern (3b ′) is In blue, the overlapping area (5b ′) is visually recognized as light blue, the first area (4c ′) in the third printed pattern (3c ′) is yellow, and the overlapping area (5c ′) is visually recognized as pale yellow. It was done.

1, 1 'transparent pattern printed matter 2, 2' base material 3, 3 ', 3a', 3b ', 3c' printed pattern 4, 4a ', 4b', 4c 'first area 5, 5a', 5b ', 5c ′ Overlapping area 6, 6a ′, 6b ′, 6c ′ Penetration area 7, 7a ′, 7b ′, 7c ′ Second area 8 Light source 9 Viewpoint of observer

Claims (4)

At least a part of the light-transmitting region on the substrate is provided with a printed pattern composed of a superimposed region and a first region of the same color under reflected light,
The overlapping region is a penetrating region formed of colored penetrating ink, the second region having a higher brightness under reflected light than the first region, and the same shape and the same size as the second region. Is made up of
Under the transmitted light, the printed pattern can be visually recognized because the overlapping area has a lighter color than the first area due to a difference in light transmittance with the first area. .   The transmissive pattern printed matter according to claim 1, wherein the saturation of the second region is higher than that of the first region.   The transmissive pattern printed matter according to claim 1 or 2, wherein the lightness of the permeation region is a difference in lightness between the first region and the second region. A plurality of the printed patterns having different colors under reflected light are arranged, and the penetrating regions each of the plurality of printed patterns are formed of the colored penetrating ink having the same chromatic color,
The transmissive pattern printed matter according to any one of claims 1 to 3, wherein the colors of the plurality of printed patterns each have a color component common to the chromatic colors.

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