Printed material and printing method therefor

Abstract

To provide a printed material and a printing method therefor that can enhance security so as not to be easily forged.SOLUTION: A printed material according to an embodiment has a transparent metallic glossy layer including a non-solid printed region that is not subjected to solid printing and a solid-printed region that is subjected to solid printing.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a printed matter excellent in forgery prevention and a printing method thereof, which are applicable to paper securities such as gift certificates and certificates, and labels such as BP labels and paper labels.

Background Art

[0002] Conventionally, printing changing technology has been applied to prevent forgery of printed matter.

[0003] In a printed matter printed by this type of printing changing technology, the pattern changes when viewed from the front and when tilted.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, a printed matter printed by such printing changing technology can be printed by using a predetermined ink such as silver or varnish.

[0006] For example, Patent Documents 1, 2, and 3 are printed matters printed by printing changing technology.

[0007] Patent Document 1 discloses a printed matter including a first printed image formed of a phosphorescent material and a second printed image formed of a transparent material on a substrate.

[0008] Patent Document 2 discloses a printed matter having a pattern-like gloss adjustment layer and a transmissive metallic gloss layer on a substrate.

[0009] Patent Document 3 discloses a technique that enables pattern authentication at a specific angle, where a transparent layer formed on a shiny layer has a pattern image with regularity.

[0010] However, for example, both Patent Documents 1 and 3 have designs created by general plate making such as solid printing, normal halftone dots, and line shapes, and the ink can also be printed with general silver ink or varnish. For this reason, they are easily forged and the security itself is not very high. The printed matter disclosed in Patent Document 3 also has a monotonous design and weak expressiveness because the transmissive metallic gloss layer is a solid print.

[0011] Thus, printed matters printed by conventional printing changing techniques have a problem in that they are not sufficiently secure because they can be easily forged.

[0012] The present invention has been made in view of such circumstances, and an object thereof is to provide a printed matter and a printing method thereof that can improve security without being easily forged.

Means for Solving the Problems

[0013] In order to achieve the above object, the present invention takes the following means.

[0014] A first aspect of the present invention is a printed matter having a transmissive metallic gloss layer in which a non-solid printing area that is not solid printed and a solid printed area that is solid printed are arranged.

[0015] A second aspect of the present invention is the printed matter according to the first aspect, wherein the non-solid printing area is formed by arranging random halftone dots.

[0016] The third aspect of the present invention is a printed matter according to the second aspect, wherein the area ratio of the halftone dots in the non-solid printing area is 40% or more and 90% or less.

[0017] The fourth aspect of the present invention is a printed matter according to the second aspect, wherein the size of the halftone dots is 0.01 μm or more and 0.1 μm or less.

[0018] The fifth aspect of the present invention is a printed matter according to the second aspect, wherein a colored pattern or characters are further arranged in the non-solid printing area.

[0019] The sixth aspect of the present invention is a printed matter according to the fifth aspect, wherein the colored pattern or characters are arranged in a single or a plurality of patterns in the non-solid printing area.

[0020] The seventh aspect of the present invention is a printed matter according to the fifth aspect, wherein the line width of the colored pattern or characters is 0.01 μm or more and 0.1 μm or less.

[0021] The eighth aspect of the present invention is a printed matter according to the fifth aspect, wherein the characters arranged in the non-solid printing area are composed of a plurality of micro characters.

[0022] The ninth aspect of the present invention is a printed matter according to the eighth aspect, wherein the size of the micro characters is 100 μm or more and 500 μm or less.

[0023] The tenth aspect of the present invention is a printed matter according to the first aspect, wherein a first display is formed by arranging a solid printing area so as to surround the non-solid printing area.

[0024] The eleventh aspect of the present invention is a printed matter according to the first aspect, wherein a first display is formed by arranging a solid printing area so as to surround the periphery of the non-solid printing area.

[0025] The twelfth aspect of the present invention is a printed matter according to any one of the first to eleventh aspects, further having a gloss adjustment layer in which a solid printed solid printing area and a non-printed non-printing area are arranged, and the gloss adjustment layer and a transparent metal gloss layer are laminated.

[0026] A 13th aspect of the present invention is a printed matter according to the 12th aspect, which forms a second display by arranging a non-printing area so as to surround the solid printing area.

[0027] A 14th aspect of the present invention is a printed matter according to the 12th aspect, which forms a second display by arranging a non-printing area so as to surround the periphery of the solid printing area.

[0028] A 15th aspect of the present invention is a printed matter according to the 12th aspect, further having a base material, on which a gloss adjustment layer is laminated, and a transparent metal gloss layer is laminated on the base material and the gloss adjustment layer.

[0029] A 16th aspect of the present invention is a printed matter according to the 12th aspect, further having a base material, on which a transparent metal gloss layer is laminated, and a gloss adjustment layer is laminated on the base material and the transparent metal gloss layer.

[0030] A 17th aspect of the present invention is a printing method of printing a non-solid printing area in any one of the printed matters from the 1st to the 11th by offset printing using UV-curable ink.

[0031] A 18th aspect of the present invention is a printing method of printing a non-solid printing area in any one of the printed matters from the 1st to the 11th by printing other than offset printing using UV-curable ink.

Advantages of the Invention

[0032] According to the present invention, it is possible to provide a printed matter and a printing method thereof that can improve security without being easily forged.

Brief Description of the Drawings

[0033]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0034] Hereinafter, each embodiment of the present invention will be described with reference to the drawings. The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of the sizes between parts, etc. are not necessarily the same as the actual ones. Also, even when representing the same part, the dimensions and ratios may be represented differently in the drawings. In the present specification and each figure, the same reference numerals are given to the same elements as those described above with respect to the already shown figures, and detailed descriptions and overlapping descriptions are omitted as appropriate.

[0035] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

[0036] FIG. 1 is a side view showing an example of a printed matter printed by the printing method according to the embodiment of the present invention.

[0037] That is, as shown in Fig. 1(a), in the printed matter 10A, a pattern-like gloss adjustment layer 30 is partially laminated on a base material 20, and further, a transmissive metallic gloss layer 40 is laminated on the base material 20 and the pattern-like gloss adjustment layer 30. The printing order can be the order of the base material 20, the pattern-like gloss adjustment layer 30, and the transmissive metallic gloss layer 40.

[0038] The base material 20 may be transparent or opaque and is not particularly limited. For example, films such as polyethylene terephthalate (PET), triacetyl cellulose, polycarbonate, polyester, polyacetate, polystyrene, and epoxy resin, or papers such as high-quality paper, coated paper, and synthetic paper, etc., materials of base materials used for general currencies and cards can be used. The thickness of the base material 20 is not particularly limited, but generally can be set in the range of 0.05 μm or more and 50 μm or less.

[0039] Further, although not limited, from the viewpoint of accurately laminating by applying the pattern-like gloss adjustment layer 30, it is preferable that the surface of the base material 20 has smoothness to such an extent that it has appropriate printability. Therefore, as shown in Fig. 1(b), an anchor layer 50 for improving smoothness may be laminated on the base material 20, and the pattern-like gloss adjustment layer 30 and the transmissive metallic gloss layer 40 may be applied and laminated on the anchor layer 50. In this case, the printing order can be the order of the base material 20, the anchor layer 50, the pattern-like gloss adjustment layer 30, and the transmissive metallic gloss layer 40.

[0040] Thus, the anchor layer 50 can be appropriately provided according to the degree of smoothness of the surface of the base material 20. For example, when an image is formed on the base material 20 by a printing method and as a result, the ink material forms irregularities on the base material 20 and the surface becomes rough, it is desirable to provide the anchor layer 50 as shown in Fig. 1(b).

[0041] The material of the anchor layer 50 is not particularly limited as long as it has required performance such as transparency as needed, and general materials can be used.

[0042] For example, for a base material 20 with low surface smoothness and a rough surface such as high-quality paper, etc., an ink with a high viscosity can be used as the anchor layer 50. Also, for a base material with high surface smoothness such as coated paper, an ink with a low viscosity can be used as the anchor layer 50.

[0043] The pattern-like gloss adjustment layer 30 adjusts so that the light reflection characteristics (gloss) of the surface of the base material 20 become different. For example, if the base material 20 is non-glossy plain paper, the pattern-like gloss adjustment layer 30 can be realized by a resin layer such as a glossy varnish. Also, if the base material 20 is glossy paper, the pattern-like gloss adjustment layer 30 can be realized by a resin layer such as a surface-matte varnish. Further, since there is a risk that the pattern may be easily recognized if the pattern-like gloss adjustment layer 30 is colored, it is preferably colorless and transparent.

[0044] The permeable metal gloss layer 40 can be realized, for example, by a glossy ink containing a metal such as silver paste, aluminum, copper, silver, tin, zinc, brass, iron phosphide, etc. Also, when forming the permeable metal gloss layer 40 by offset printing, since it is necessary to produce a luminance sense with a thin film thickness, as the material of the permeable metal gloss layer 40, a leafing type in which a metal material is oriented on the film surface is suitable.

[0045] FIG. 2 is a side view showing another example of a printed matter printed by the printing method according to the embodiment of the present invention.

[0046] That is, as shown in FIG. 2(a), in the printed matter 10C, the permeable metal gloss layer 40 is laminated on the base material 20, and further, the pattern-like gloss adjustment layer 30 is partially laminated on the permeable metal gloss layer 40. The printing order can be the order of the base material 20, the permeable metal gloss layer 40, and the pattern-like gloss adjustment layer 30.

[0047] Further, similar to the explanation using FIG. 1(b), an anchor layer 50 can be appropriately provided on the base material 20 according to the degree of smoothness of the surface of the base material 20, as in the printed matter 10D shown in FIG. 2(b). In this case, the printing order can be the base material 20, the anchor layer 50, the transmissive metal gloss layer 40, and the pattern-like gloss adjustment layer 30 in this order.

[0048] FIGS. 3 and 4 are plan views showing configuration examples of the pattern-like gloss adjustment layer.

[0049] The pattern-like gloss adjustment layer 30A illustrated in FIG. 3 is formed by arranging a solid-printed solid-printed area 32 and a non-printed area 34 where printing is not performed. Specifically, the pattern-like gloss adjustment layer 30A is formed by forming the solid-printed area 32 by solid printing and forming the non-printed area 34 so that the portion of the display object is omitted.

[0050] Since the printed area 32 is solid-printed, the dot area ratio is 100%. On the other hand, since the non-printed area 34 is not printed, the dot area ratio is 0%.

[0051] In the pattern-like gloss adjustment layer 30A, the non-printed area 34 is arranged so as to be surrounded by the solid-printed area 32. Thereby, a display object such as the white-out character "TOP" is formed, for example.

[0052] Conversely, by arranging the non-printed area 34 so as to surround the solid-printed area 32, as in the pattern-like gloss adjustment layer 30B illustrated in FIG. 4, a display object such as the character "TOP" can be formed in the same manner.

[0053] Specifically, the pattern-like gloss adjustment layer 30B is formed by solid-printing the portion of the display object on the non-printed area 34 to form the solid-printed area 32. Also in this case, since the printed area 32 is solid-printed, the dot area ratio is 100%. On the other hand, since the non-printed area 34 is not printed, the dot area ratio is 0%.

[0054] For both the pattern-like gloss adjustment layers 30A and 30B, the displayed object is not limited to characters, and in addition to characters, it can also be, for example, numbers, marks, patterns, etc.

[0055] FIG. 5 and FIG. 6 are a plan view and a partial enlarged view showing a configuration example of the transmissive metal gloss layer.

[0056] The transmissive metal gloss layer 40A illustrated in the plan view of FIG. 5(a) is formed by arranging a non-solid-printed area 42 that is not solid-printed and a solid-printed area 44 that is solid-printed.

[0057] Random dots a are arranged in the non-solid-printed area 42. The size of the dots a is 0.01 μm or more and 0.1 μm or less.

[0058] Furthermore, in the non-solid-printed area 42, as shown in FIG. 5(b) which is a partial enlarged view of FIG. 5(a), characters such as "SECURE" and "セキュア" can be arranged. The characters are composed of a plurality of micro characters. For example, "SECURE" is composed by arranging the micro characters "S", "E", "C", "U", "R", "E" in this order, and "セキュア" is composed by arranging the micro characters "セ", "キ", "ュ", "ア" in this order. The size of the micro characters is 100 μm or more and 500 μm or less.

[0059] Furthermore, although not shown, colored patterns can also be arranged in the non-solid-printed area 42. The line width of the colored patterns or characters is 0.01 μm or more and 0.1 μm or less.

[0060] Also, the colored patterns and characters arranged in the non-solid-printed area 42 can be arranged in a single or a plurality of patterns.

[0061] As exemplified in the local area α in FIG. 5(b), in the non-solid printing area 42, in a local area where only the halftone dots a are arranged, the area ratio of the halftone dots a is 40% or more and 90% or less. When the area ratio of the halftone dots a is lower than 40%, the pattern when the printed matter 10 is tilted becomes difficult to visually recognize. On the other hand, when it is higher than 90%, the small characters are crushed and cannot be visually recognized. On the other hand, in the solid printing area 44, the area ratio of the halftone dots a is 100%.

[0062] The non-solid printing area 42 is formed by high-definition printing.

[0063] As the high-definition printing, offset printing using UV-curable ink is suitable. Compared with solvent ink, UV-curable ink has less shrinkage of the ink during drying. Therefore, there is little change in the ink after printing on the plate, and it is less likely to cause shaking or bleeding of characters, so it is suitable for high-definition printing. Offset printing is easy to freely design the shape of the halftone dots, so it is easy to provide small characters in the halftone dots. The printing speed of offset printing is preferably 30 to 1500 m / min.

[0064] In this way, offset printing using UV-curable ink is suitable for high-definition printing. However, it is also possible to perform high-definition printing by applying printing other than offset printing using UV-curable ink.

[0065] The transmissive metallic gloss layer 40A can form a display object by arranging the solid printing area 44 so as to surround the non-solid printing area 42. In FIG. 5(a), as an example of the display object, a star-shaped pattern is illustrated.

[0066] Conversely, as in the transmissive metallic gloss layer 40B illustrated in FIG. 6(a), a display object can also be formed in the same way by arranging the solid printing area 44 so as to surround the non-solid printing area 42.

[0067] The description of FIG. 6(b) is the same as the description of FIG. 5(b), so it is omitted.

[0068] Next, the operation of the printed matter according to the embodiment of the present invention configured as described above will be described.

[0069] FIG. 7 is a diagram showing how it looks when the transmissive metallic gloss layer has the pattern of FIG. 5 and the pattern-like gloss adjustment layer has the pattern of FIG. 4.

[0070] First, as shown in FIG. 7(a), when the observer K views the printed matter 10 at a position where the specularly reflected light R formed by the incident light I from the light source L being specularly reflected on the printed matter 10 cannot be visually recognized (for example, when viewed from the front), the observer K can visually recognize the transmissive metallic gloss layer 40A, but cannot visually recognize the pattern-like gloss adjustment layer 30B.

[0071] At this time, at first glance, only the star-shaped pattern formed in the solid printing area 44 can be visually recognized. However, when the non-solid printing area 42 of the background is enlarged and observed, as shown in FIG. 5(b), the randomly arranged halftone dots a and characters can be visually recognized.

[0072] Subsequently, as shown in FIG. 7(b), when the observer K views the printed matter 10A at a position where the specularly reflected light R formed by the incident light I from the light source L being specularly reflected on the printed matter 10 can be visually recognized (for example, when tilted), the observer K can visually recognize the pattern-like gloss adjustment layer 30B and can visually recognize the character "TOP", while the star-shaped pattern of the transmissive metallic gloss layer 40A becomes invisible.

[0073] Printing of random halftone dots with silver ink results in an excellent appearance of the transmissive metallic gloss layer 40 with silver ink when the printed matter 10A is viewed from the front, and good visibility of the pattern of the pattern-like gloss adjustment layer 30B at a position where the specularly reflected light R can be visually recognized when tilted. Such a changing effect is achieved when the area ratio of the halftone dots a in the non-solid printing area 44 of the transmissive metallic gloss layer 40 is 40% or more and 90% or less, as shown in FIG. 8.

[0074] FIG. 8 is a table showing the results of confirmation of visibility for eight samples of the printed matter according to the present embodiment.

[0075] The eight samples were all created by printing the printed matter 10 having the configuration shown in FIG. 7 on art paper. However, the dot area ratio of the random dots a in the non-solid printing area 42 is different for each sample, being 90% or more for sample 1, 90% for sample 2, 80% for sample 3, ···, and less than 40% for sample 8.

[0076] In the case of sample 1 where the dot area ratio is 90% or more, the visibility of the pattern of the transmissive metallic gloss layer 40A was poor. Also, the small characters in the non-solid printing area 42 of the transmissive metallic gloss layer 40A were crushed and could not be visually recognized.

[0077] In the case of sample 8 where the dot area ratio is less than 40%, the visibility of the pattern-like gloss adjustment layer 30B was poor.

[0078] FIG. 9 is a photographic image showing an example of the transmissive metallic gloss layer observed when the dot area ratio is 40% or more and 90% or less.

[0079] As illustrated in FIG. 9, in the case of samples 2 to 7 where the dot area ratio is 40% or more and 90% or less, the visibility of the pattern of the transmissive metallic gloss layer 40A and the visibility of the characters of the random dots a were good. Also, although not shown, the visibility of the pattern-like gloss adjustment layer 30B was also good. Therefore, it was confirmed that an excellent changing effect can be realized.

[0080] As described above, in the transmissive metallic gloss layer 40 composed of the solid printing area 42 and the non-solid printing area 44 in the printed matter according to the present embodiment, the non-solid printing area 44 is formed by randomly arranging the dots a.

[0081] Such an arrangement of the random dots a is performed by high-definition printing that requires the use of special plate-making software. Therefore, the printed matter according to the present embodiment cannot be easily forged. Even if the random dots a are copied for forgery, the characters and lines will be crushed, and replication is difficult. Thus, the printed matter according to the present embodiment is extremely difficult to forge, and the security is improved.

[0082] Also, according to the printed matter according to the present embodiment, in the transmissive metallic gloss layer 40, due to the arrangement of the non-solid printing area 42 and the solid printing area 44, gradation expression of the pattern and the background is also possible, so that it is also possible to achieve a highly designed changing effect.

[0083] As described above, according to the present invention, it is possible to provide a printed matter and a printing method thereof that can improve both security and optical effects.

[0084] As described above, the best mode for carrying out the present invention has been described with reference to the accompanying drawings, but the present invention is not limited to such a configuration. Those skilled in the art can conceive of various modification examples and correction examples within the scope of the inventive technical idea of the claims, and it is understood that those modification examples and correction examples also belong to the technical scope of the present invention.

Explanation of reference numerals

[0085] 10 Printed matter 20 Base material 30 Patterned gloss adjustment layer 32 Solid printing area 34 Non-printing area 40 Transmissive metallic gloss layer 42 Non-solid printing area 44 Solid printing area 50 Anchor layer a Halftone dot I Incident light K Observer L Light source α Local area

Claims

1. A printed matter having a transparent metallic gloss layer in which non-solid print areas that are not solidly printed and solid print areas that are solidly printed are arranged.

2. The printed matter according to claim 1 , wherein the non-solid print area is formed by randomly arranging halftone dots.

3. The printed matter according to claim 2 , wherein the area ratio of the dots in the non-solid print area is 40% or more and 90% or less.

4. The printed matter according to claim 2 , wherein the size of the halftone dots is equal to or greater than 0.01 μm and equal to or less than 0.1 μm.

5. The printed matter according to claim 2 , further comprising a colored pattern or a character arranged in the non-solid print area.

6. The printed matter according to claim 5 , wherein the colored patterns or characters are arranged in a single pattern or multiple patterns in the non-solid print area.

7. 6. The printed matter according to claim 5, wherein the line width of the color pattern or character is 0.01 μm or more and 0.1 μm or less.

8. The printed matter according to claim 5 , wherein the characters arranged in the non-solid print area are made up of a plurality of minute characters.

9. The printed matter according to claim 8 , wherein the size of the minute characters is 100 μm or more and 500 μm or less.

10. The printed matter according to claim 1 , wherein a first display object is formed by arranging the solid print area so as to be surrounded by the non-solid print area.

11. The printed matter according to claim 1 , wherein the solid print area is arranged so as to surround the non-solid print area, thereby forming a first display object.

12. Further comprising a gloss adjustment layer in which a solid printed area and a non-printed area are arranged, The printed matter according to claim 1 , wherein the gloss adjustment layer and the transmissive metallic gloss layer are laminated together.

13. The printed matter according to claim 12 , wherein the non-printed area is arranged so as to be surrounded by the solid printed area, thereby forming a second indicia.

14. The printed matter according to claim 12 , wherein the non-printed area is arranged so as to surround the periphery of the solid printed area, thereby forming a second indicia.

15. Further comprising a substrate, The gloss adjustment layer is laminated on the substrate, The printed matter according to claim 12, wherein the transmissive metallic gloss layer is laminated on the base material and the gloss adjustment layer.

16. Further comprising a substrate, The transparent metallic luster layer is laminated on the substrate, The printed matter according to claim 12, wherein the gloss adjustment layer is laminated on the base material and the transmissive metallic gloss layer.

17. A printing method comprising printing the non-solid printing area of ​​the printed matter according to any one of claims 1 to 11 by offset printing using a UV-curable ink.

18. A printing method for printing the non-solid print area of ​​the printed matter according to claim 1 by a printing method other than offset printing using a UV curable ink.

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