JP2000094863A - Valuable printed matter with forgery and falsification preventing function and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give extremely effective forgery preventing, falsification preventing and copy preventing functions to a valuable printed matter such as a paper money, a passport, securities, stamp or the like by a simple means. SOLUTION: A printing surface of a passport book 1 of one example of a valuable printed matter is protected by a laminated film. Grooves 9 are formed on a partial or entire area of the film by a laser beam and thermal influence is given to printing 5 included on the area. When an ultraviolet ray is emitted to the printing 5, it is colored with a light having a wavelength except an ultraviolet band region, thereby deciding its truth or a falsehood.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a passport booklet, immigration visa, securities, banknotes, bank cards, cash cards,
Forgery prevention of identification cards, licenses, introductory certificates or stamps,
The present invention relates to a valuable printed matter requiring prevention of tampering and copying, and a method of manufacturing the same.

[0002]

2. Description of the Related Art In recent years, with respect to the valuable printed matter which is required to prevent forgery, tampering and copying as described above, it is easy to determine the authenticity of the printed matter in the general distribution process with the progress of color copying and scanners. Measures that can be taken are becoming important.

Means for preventing the forgery and falsification of valuable printed matter such as securities and stamps include insertion, and the like. However, this is a human visual judgment element and cannot be a mechanical judgment element. It is the current situation.

[0004] Also, with respect to valuable printed matter that requires machine identification processing that requires authenticity discrimination, conventionally, for example, printing has been performed using fluorescent ink or magnetic ink, or fluorescent paper or magnetic fiber has been included in paper. Although these are optically and magnetically authenticated, they are not perfect as security measures against forgery, falsification, and copying. Since special fibers are required, it is not suitable as a means for easily determining the authenticity of a normal printed matter that does not use a special ink or the like.

[0005] Further, the peeling strength of the return paper of a passport booklet in which personal information is written and protected by a laminate film is reduced, and when the laminate film is to be peeled off, the return paper remains on the laminate film side, thereby preventing counterfeiting. It is designed to prevent tampering. However, even if the personal print information on the return paper is broken in such a manner, the personal information can be easily created by using a high-performance personal computer and high-performance image processing software, which have recently become remarkably popular. Forgery or tampering can be easily achieved by laminating the laminate film.

[0006]

The present inventor has been researching and developing a new technology for preventing forgery and tampering. In particular, the present inventors have developed a laser printing method for a printing surface printed with an ink containing no fluorescent substance. When irradiated with the beam, when this printed surface is observed with visible light, it appears to be no different from before the irradiation, but when this printed surface is irradiated with ultraviolet light, a color different from that when observed with visible light is produced. Specifically, observe the color development in light of red, orange, yellow green, etc. in a wavelength region completely different from the light in the ultraviolet region, and even after a long time,
It has been found that the above observation results under visible light and under ultraviolet light irradiation do not change.

The inventor of the present invention aims to solve the above-mentioned conventional problems by focusing on this finding and using it as a means for preventing forgery and falsification of valuable printed matter. Means can be easily and inexpensively applied to printed matter that does not use a fluorescent substance or the like, thereby providing a valuable printed matter having an excellent anti-counterfeiting and tampering effect. Provided is a valuable printed material which is applied to a protected valuable printed material to act synergistically with the forgery and tampering prevention functions of the laminate film to provide a better forgery and tampering prevention function, and a method of manufacturing the same.

Further, the present inventors have applied a laser beam to the surface of the vinyl acetate-based adhesive layer to exert a thermal effect. This layer does not change its color with visible light, but is irradiated with ultraviolet light. Then, it was found that a color different from that observed with visible light was produced. Focusing on this finding, the present inventor irradiates a laser beam with a specific pattern on paper (base material) bonded to a mount with a vinyl acetate-based adhesive or on a paper on which a layer of a vinyl acetate-based emulsion is formed. The invention provides a valuable printed matter having a function of preventing forgery and tampering and a method of manufacturing the same.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a valuable printed matter obtained by irradiating a part or the whole area of a printing surface of a substrate with a laser beam. The printed portion of the printing surface irradiated with the laser beam is thermally affected by the laser beam, and when irradiated with ultraviolet light, provides a valuable printed matter characterized by developing a color different from that observed with visible light.

[0010] In order to solve the above-mentioned problems, the present invention is a valuable printed matter in which a printed surface of a substrate on which information is printed is protected by a laminate film, and a part or the entire area of the printed surface. Is irradiated with a laser beam before being laminated by the laminate film, and the laminate film is of such a degree as to transmit ultraviolet rays.
It is formed of a thin or high UV transmittance material, and the printed portion of the printing surface irradiated with the laser beam is thermally affected by the laser beam irradiation, and is observed with visible light when irradiated with the ultraviolet beam. Provided is a valuable printed material characterized by developing a color different from the case.

[0011] In order to solve the above-mentioned problems, the present invention is a valuable printed matter in which the printed surface of a substrate on which information is printed is protected by a laminated film, and the laminated film is partially or wholly. A groove is formed by irradiating the region with a laser beam, and the printed portion of the printing surface corresponding to the groove is thermally affected by the laser beam when the groove is formed, and is irradiated with ultraviolet rays. Then, there is provided a valuable printed matter characterized in that the printed matter is colored in a color different from that when observed with visible light.

In order to solve the above-mentioned problems, the present invention is a valuable printed matter having a printed substrate adhered to a mount via an adhesive, and in order to solve the above-mentioned problems, A part or the whole area of the surface of the base material is irradiated and perforated in a specific pattern with a laser beam, and the adhesive is almost exposed, and the almost exposed part of the adhesive is thermally affected by the laser beam. The present invention provides a valuable printed matter characterized in that, when irradiated with ultraviolet light, the printed matter is colored in a different color from that observed with visible light.

[0013] The surface of the substrate may be protected by being laminated with a laminate film formed of a thin material or a material having a high ultraviolet transmittance, which is capable of transmitting ultraviolet light after being irradiated with the laser beam. Good.

In order to solve the above-mentioned problems, the present invention is a valuable printed matter in which an emulsion layer is coated or printed on a part or the whole area of the surface of a substrate, wherein the emulsion layer is Provided is a valuable printed matter characterized by being irradiated with a laser beam in a specific pattern, being affected by heat, and irradiating with ultraviolet rays, the specific pattern is colored in a different color from that observed when observed with visible light. .

In order to solve the above-mentioned problems, the present invention provides a method of irradiating a part or the entire area of a printing surface of a base material with a laser beam to thermally affect a printing portion of the printing surface. A method for producing a valuable printed matter, characterized by imparting a forgery and tampering prevention function such that when the printing surface is irradiated with ultraviolet light, the printed portion of the printing surface develops a color different from that observed when viewed with visible light. I do.

In order to solve the above-mentioned problems, the present invention irradiates a part or the whole area of the printing surface of the base material with a laser beam to have a thermal effect on a printing part of the printing surface,
After that, the printed surface, to the extent that ultraviolet light can be transmitted, by laminating with a laminate film formed of a thin or high UV transmittance material, when irradiated with ultraviolet light, the printed portion of the printed surface was observed with visible light Provided is a method for producing a valuable printed matter, which is provided with a function of preventing forgery and tampering of coloring in a different color from the case.

According to the present invention, in order to solve the above-mentioned problems, a printing surface of a base material is laminated with a laminate film, and then a groove is formed in a part or all of the laminate film with a laser beam. The function of preventing forgery and tampering that the printed portion of the printing surface is colored in a different color from that observed when viewed with visible light when irradiated with ultraviolet light by exerting a thermal effect on the printed portion of the printing surface included in the region. Provided is a method for producing a valuable printed matter, which is characterized in that it is provided.

According to the present invention, in order to solve the above-mentioned problems, a base material is adhered to a backing paper via an adhesive, and a part or all of the surface of the base material is subjected to a specific pattern with a laser beam. When the adhesive is almost exposed, the adhesive is almost exposed, and the thermal effect of the laser beam is applied, and when the base material is irradiated with ultraviolet light, the part where the adhesive is almost exposed is colored in a different color from that observed with visible light. And a method for producing a valuable printed matter, characterized by providing a function of preventing counterfeiting and tampering.

According to the present invention, in order to solve the above-mentioned problems, an emulsion layer is coated or printed on a part or the entire area of the surface of a substrate, and the above-mentioned emulsion layer is formed by:
To provide a forgery and tampering prevention function that, when irradiated with a laser beam in a specific pattern to give a thermal effect and irradiate the base material with ultraviolet rays, the specific pattern is colored in a different color from that observed by visible light. And a method for producing a valuable printed matter.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. The present invention is a valuable printed matter provided with an effect of preventing forgery and tampering, and is applicable to various printed matters. Hereinafter, examples in which the valuable printed matter of the present invention is applied to a passport booklet and a bill will be described.

(Embodiment 1) FIGS. 1 to 3 illustrate a first embodiment in which a valuable printed matter according to the present invention is applied to a passport booklet. In FIGS. 1 and 2, a calf 2 (mount), which is a cover of the passport booklet 1, and a return sheet 3 (substrate) on which personal information is described are adhered to each other with an adhesive 4.

The return paper 3 is provided with prints 5 and 5 'such as lines and personal information in black ink by offset printing. This ink contains no fluorescent substance. Then, the return paper 3 is thermocompression-bonded by the laminate film 6 and laminated.

With respect to the passport booklet 1 having such a configuration, at the time of issuance, the laser beam 8
Is irradiated on a part of the laminate film 6, for example, a part corresponding to the print 5 of the print surface of the personal information of the return paper 3,
The groove 9 is etched.

The depth of the groove 9 is determined by adjusting the power of the laser beam 8, but if the power is too strong,
This is not desirable because it penetrates through the laminate film 6 and irradiates the return paper 3 too much, and the printed surface of the return paper 3 is destroyed by the laser beam. When the groove 9 is etched in the laminated film 6 by the laser beam 8, the power of the laser beam 8 thermally affects the ink on the printing surface of the return paper 3 and changes the quality. As described above, the depth of the groove 9 is preferably such that the printing surface of the return paper 3 is not destroyed, and the depth of the groove 9 may have a thermal effect on the ink. Thus, the passport booklet 1 according to the present invention is completed.

In the passport booklet 1 constructed as described above,
As shown in FIG. 3, the surface of the laminate film 6 is irradiated with ultraviolet rays 10. Then, the ink in the portion of the print 5 of the return paper 3 affected by the heat is colored red by light in a red region which is a wavelength region longer than the ultraviolet wavelength region. On the printing surface of the return paper 3, such a red color is not observed in the print 5 ′ in the region where the groove is not etched in the laminate film.

In the first embodiment, specifically, personal information is printed with black ink on the return paper 3 after lamination, and the wavelength λ is set to 10.3 in the region of the laminate film 6 corresponding to the printed surface. Using a low-power carbon dioxide laser marker with a power of about 12 W at 4 μm, a scan speed of 38
Etching is performed at 5 mm / sec and a laser power output of 40%. Here, the black ink was prepared under the conditions of 10% of carbon black as a coloring pigment, 8% of dioxane violet, and 82% of varnish for wet offset. The point to make it look red is to incorporate dioxane violet. The color observed in the visible light region can be changed by blending with another coloring pigment.

When the passport booklet thus constructed is observed under visible light, the print 5 irradiated with the laser beam and the print 5 'not irradiated also look black. However, when the surface of the laminate film 6 is irradiated with ultraviolet rays, the print 5 'appears to be black without change, but the print 5 appears to be colored red.

As described above, the rationale for the formation of a different color in printing by laser beam irradiation has not been fully elucidated, but one of the reasons is that the molecular structure of dioxane violet in the pigment of the ink changes. It is considered that when irradiated with ultraviolet rays, it develops a red color. In addition, it is considered that the combination of the PET film material used as the laminate film and dioxane violet further enhances the color definition.

According to experiments, the degree of coloring is small when the laser power output is 30% or less. It is considered that the reason for this is that the laser beam 8 does not exert a sufficient thermal effect because the etching depth of the laminate film 6 is small.

The passport booklet 1 according to the first embodiment is printed with the same black ink, and the printed surface of the printed film having no apparent difference under visible light is printed 5 in the area where the laminate film is etched, In the print 5 'in the area of, the area looks different when irradiated with ultraviolet light.

Therefore, after peeling off the laminating film 6 and the return paper 3 of the genuine passport booklet 1, the personal information and the like are forged and printed on the return paper 3 and attached to the calf 2, and the laminated film 6 is further laminated. Even if the passport booklet is forged or falsified,
Since it does not develop red and looks black, forgery or tampering can be easily confirmed.

In this case, even if the laminate film
Even if the grooves are forged by precision machining with a needle or an embossing roller, red color does not occur because the personal information on the return paper is not affected by the laser beam at all.

Further, even if the grooves are etched with a laser beam and forged, it is extremely difficult to form a groove exactly the same as a genuine groove such as the depth of the groove due to the power of the laser beam. Are different from each other, so that the colors of the colors are different.

Further, only a part of the printed characters (eg,
By etching a groove in the part of the laminate film on the lower or right side and giving a thermal effect, when this character is viewed with visible light, even if the entire character looks the same color, it is irradiated with ultraviolet light Alternatively, only a part of the color may be formed in a different color.

The laminated film formed in this manner is peeled off, counterfeit printing of the return sheet 3 is performed, the laminated film is pasted, and the laminated film is artificially etched by a new laser beam. It is extremely difficult to apply heat to exactly the same parts as those that have a thermal effect on the characters, and when irradiating with ultraviolet light with visible light, the authentic passport booklet and the booklet due to forgery or falsification have different colors in the same character. Since the color-developed portion slightly differs, it is easily determined that the forgery or falsification has occurred.

Further, with respect to a pattern on a return sheet printed in a different color for each part, a part of the pattern etched by a laser beam can be seen in the above-mentioned colors when observed with visible light. Upon irradiation with ultraviolet light, the etched portion develops one color. Therefore, even if the original valuable printed matter is intentionally printed in a different color for each part on the return paper as in the case of the genuine valuable printed matter, the authenticity can be easily determined by irradiating the laser beam.

(Embodiment 2) FIGS. 4 to 7 are diagrams for explaining Embodiment 2 in which the valuable printed matter according to the present invention is applied to a passport booklet. As in the first embodiment, the calf 2 is the cover of the passport booklet.
And a return paper 3 on which personal information is printed with black ink is adhered with an adhesive, and a laminate film 6 is laminated thereon. However, the passport booklet 1 according to the first embodiment irradiates the laser beam 8 after laminating, but the passport booklet 11 according to the second embodiment has a point that the laser beam 8 is irradiated before laminating, The second embodiment is different from the first embodiment in that the film 6 is formed of a material having a small thickness or a high transmittance with respect to the ultraviolet light so as to transmit the ultraviolet light.

Specifically, in Example 2, wet offset printing was performed using the same ink as in Example 1, and then a part of or the entire surface of the printing surface was coated with the same carbonic acid as used in Example 1. As shown in FIG. 4, a laser beam 8 is irradiated with a laser power of 30% by the gas laser marker 7. Then, the passport booklet 11 shown in FIGS. 5 and 6 is manufactured by laminating the laminate film 6. The laminated film 6 is formed of a material having a proper protective function and being thin or having a high ultraviolet transmittance so that the ultraviolet light can be transmitted.

When checking the passport booklet 11, ultraviolet rays 10 are irradiated as shown in FIG. As in the first embodiment, the ink of the print 5 on the printing surface is affected by the heat of the laser beam 8, and the print 5 looks black under visible light as in the case where the laser beam is not irradiated. Irradiation with ultraviolet light 10 causes color development with light of a red wavelength outside the ultraviolet region. Thereby, the passport booklet 11 of the second embodiment is also provided with a function of preventing forgery and tampering.

In the second embodiment, when the laminate film has a thickness normally used in a passport booklet, that is, when the laminate film is not formed of a thin material or a material having a high ultraviolet transmittance that is capable of transmitting ultraviolet light, Printing 5
Does not develop a red color even when irradiated with ultraviolet rays 10 as described above. This is probably because ultraviolet rays are absorbed by the laminate film and do not pass through to the printed surface. By the way, when a groove is formed by irradiating a laser beam after laminating as in Example 1, the problem that the printed film 5 does not develop color does not occur because the laminated film disappears or becomes thin and the irradiated ultraviolet rays are easily transmitted. .

As described above, in the valuable printed matter according to the second embodiment, the laminated film 6 needs to be limited to a material having a thickness or a high transmittance of ultraviolet rays that can transmit ultraviolet rays. Since it is easily determined that the laminated film is not authentic except for the limited laminated film, the effect of preventing forgery and tampering is extremely large.

Third Embodiment Although not shown, a third embodiment in which the valuable printed matter according to the present invention is applied to a bill will be described. The banknote was printed on a part or all of the printed surface of the substrate printed with the wet offset ink using the carbon dioxide laser marker used in Example 1 at a scan speed of 20%.
Irradiate a laser beam at 0, laser power 15%. The wet offset ink is not particularly a special ink containing a fluorescent substance or the like, but a purple ink containing 10% of phthalocyanine blue H, 20% of quinacridone red Y and 70% of a varnish for wet offset, which are coloring pigments, is used. .

When the banknotes thus subjected to the laser beam irradiation process are checked, the banknotes are irradiated with ultraviolet rays. As in the first and second embodiments, the ink on the printing surface is thermally affected by the irradiation of the laser beam, and looks like the same color under the visible light as when the laser beam is not irradiated. Irradiates with light of an orange wavelength other than ultraviolet light, and appears orange.

The point that the ink looks orange under ultraviolet rays is that quinacridone red Y is mixed with the ink. Phthalocyanine blue was blended as a coloring pigment, but the color observed with visible light was
It can be changed by blending with other coloring pigments. When a wet offset ink containing the dioxazine violet used in Example 1 is used, the ink looks red under ultraviolet irradiation.

If the printing surface of the banknote as in the third embodiment is previously irradiated with a laser beam having a predetermined intensity at the time of issuance or the like, the authenticity can be determined by irradiating the printing surface with ultraviolet light to form a color. Can be easily determined as true or false. Recently, printing technologies using copiers and personal computers have become easier and more sophisticated, but even with these printing technologies,
According to this embodiment, the authenticity is easily determined, and forgery and tampering are effectively prevented.

In the second and third embodiments, the laser beam is directly irradiated on the printing surface. In this case, only a part of the print is irradiated with the laser beam to exert a thermal effect. When viewed with visible light, even if the entire character looks the same color, only a part of the character can be colored differently when irradiated with ultraviolet light. In this way, even if the laser beam is irradiated on the forged or falsified printing surface, it is extremely difficult to exert a thermal effect on a part of the character just like a genuine valuable printed matter. Since a portion of the same character that is colored with a different color from the genuine valuable printed matter is slightly different, it is easy to determine that the copy is forged or falsified.

Similarly, in Examples 2 and 3, with respect to a pattern printed in a different color for each part, a part of the pattern is irradiated with a laser beam, and this pattern is observed with visible light. Although visible in color, when irradiated with ultraviolet light, the portion irradiated with the laser beam develops a single color. In this way, even if the printed portion is intentionally printed in a different color in the same manner as a genuine valuable printed matter and subjected to a laser beam irradiation process, the same pattern as the genuine valuable printed matter can be obtained. It is extremely difficult to give a thermal effect to the part, and the parts that develop different colors are slightly different. Therefore, it is easy to determine that the part has been forged or altered by irradiating ultraviolet rays.

(Embodiment 4) FIGS. 8 and 9 are diagrams for explaining Embodiment 4 in which the valuable printed matter according to the present invention is applied to a passport booklet. In FIG. 8, a calf (backing sheet) 2 as a cover of the passport booklet 12 and a return sheet (substrate) 3 on which personal information is printed with black ink are a vinyl acetate adhesive 1.
3 is adhered. The return paper 3 is a laser beam 8
The surface 15 of the vinyl acetate-based adhesive 13 inside the hole is almost exposed, and the surface 15 is thermally affected by the laser beam 8 and deteriorates. .

Then, the laminate film 16 is laminated on the surface of the return paper 3 to form the passport booklet 12 as shown in FIG. This laminated film 16
Is formed of a thin material or a material having a high transmittance of ultraviolet light, which is capable of transmitting ultraviolet light without impairing the protection function.

More specifically, a scan speed of 500 mm / sec and a laser power of 30 to 30 mm are applied to a part or the entire surface of the return sheet 3 using the same carbon dioxide laser marker as in the first embodiment.
The laser beam 8 is radiated at an output of 40% to irradiate the return paper 3 in a specific pattern to make it disappear. Thereafter, the passport booklet 12 is manufactured by laminating the laminate film 16 on the return paper 3.

When checking such a passport booklet 12, ultraviolet rays 10 are irradiated as shown in FIG. The surface 15 of the vinyl acetate-based adhesive 13 that has been substantially exposed to the heat affected by the laser beam 8 is exposed in a pattern.
It can be seen under visible light without any change.
Irradiates with light having a wavelength of yellow-green outside the region of the ultraviolet light 10, and looks yellow-green. As a result, this passport booklet 1
2 is easily determined, and a function of preventing forgery and tampering is provided. It should be noted that, for example, a modification example in which lamination is not necessarily required depending on the use, such as a disposable primer, may be considered.

(Embodiment 5) FIG. 10 is a view for explaining Embodiment 5 of the valuable printed matter according to the present invention. The valuable printed matter 17 is a paper 18 on which personal information and the like are printed with ink.
Is coated or printed with a layer 19 of a vinyl acetate emulsion, and the surface of the layer 19 of the vinyl acetate emulsion is formed by irradiating a laser beam 10 in a specific pattern. This laser beam 1
By the irradiation of 0, the layer 19 is deteriorated under the influence of heat. The valuable printed matter 17 is stored in a depositing machine or the like like a bank card, for example.
On the surface of No. 9, a thin laminated film as shown in Example 4 may be laminated.

When the surface of the valuable printed matter formed in this way is irradiated with ultraviolet rays, the portion of the vinyl acetate emulsion layer that has been thermally affected by the laser beam is the portion that is not irradiated with the laser beam under visible light. Although it does not change at all, it is colored by light having a yellow-green wavelength outside the ultraviolet region when the above-mentioned ultraviolet ray is irradiated, and looks yellow-green. As a result, the valuable printed matter has a function of preventing forgery and tampering.

[0054]

According to the present invention, as described above, the printing surface is irradiated with a laser beam without using a fluorescent substance-containing ink, thereby providing a valuable printed matter which can be obtained by an extremely low cost and simple processing. The printed portion of the printed surface can be colored in a different color from the case where the printed portion is irradiated with ultraviolet light and observed with visible light, and it is possible to easily determine the authenticity by observing the color.

Then, for a valuable printed matter formed by irradiating a laser beam on the surface of the laminated film and etching the groove to thermally affect the printed surface of the return paper, the printed surface is forged or falsified and the laminated film is simply applied. Even if the groove is changed or machined in this laminated film, the laser beam is not irradiated and the ink on the printing surface is not thermally affected, and even if the groove is etched by irradiating the laser beam Since it is difficult to make the position and the etching depth exactly the same as the genuine one, it is possible to easily determine the authenticity only by irradiating this with ultraviolet light.

The valuable printed matter of the present invention, which is constituted by irradiating a laser beam in a specific pattern on a paper bonded to a mount with a vinyl acetate-based adhesive or a paper formed with a vinyl acetate-based emulsion layer, is visible. Light does not change the color at all, but when irradiated with ultraviolet light, it develops a color different from that observed with visible light, so forgery and tampering can be easily determined, and it has a great effect on preventing forgery and tampering. Have.

[Brief description of the drawings]

FIG. 1 is a plan view of a passport booklet of a valuable printed matter according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating a state in which the passport booklet of FIG. 1 is irradiated with ultraviolet rays.

FIG. 4 is a diagram showing one process of manufacturing a passport booklet according to a second embodiment of the valuable printed matter according to the present invention.

FIG. 5 is a plan view of a passport booklet according to the second embodiment.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a diagram illustrating a state in which the passport booklet of FIG. 5 is irradiated with ultraviolet light.

FIG. 8 is a diagram showing one process of manufacturing a passport booklet according to a fourth embodiment of the valuable printed matter according to the present invention.

FIG. 9 is a sectional view of a passport booklet according to a fourth embodiment.

FIG. 10 is a view for explaining Example 5 of the valuable printed matter according to the present invention.

[Explanation of symbols]

1, 11, 12, 17 Passport booklet as an example of valuable printed matter 2 Calf 3, 18 Return paper 4 Adhesive 5, 5 'Printing 6, 16 Laminated film 7 Carbon dioxide gas laser 8 Laser beam 9 Groove formed on laminated film 10 Ultraviolet light 13 Adhesive 14 Groove formed on return paper 15 Almost exposed surface of adhesive 19 Layer of vinyl acetate emulsion

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 HA02 HA19 HB01 HB02 HB03 HB07 HB09 HB10 HB20 JB17 KA01 KA06 KA07 KA37 KA38 LA02 LB16 LB17 2H113 AA04 AA06 BB08 BB32 BC09 CA36 CA39 CA44 FA01 A03 BB01 DB01

Claims (11)

[Claims] 1. A precious printed matter obtained by irradiating a part or the whole area of a printing surface of a base material with a laser beam, wherein a printed portion of the printing surface irradiated with the laser beam is heated by the laser beam. A valuable printed material that is affected and emits a different color when irradiated with ultraviolet light than when observed with visible light. 2. The printed surface of a substrate on which information is printed is a valuable printed matter protected by a laminate film, and a part or the entire area of the printed surface is laminated before being laminated by the laminate film. Irradiated with a laser beam, the laminate film is formed of a thin or highly ultraviolet-transmissive material that is capable of transmitting ultraviolet light, and the printed portion of the printed surface irradiated with the laser beam is a laser beam. A valuable printed material that is thermally affected by irradiation and develops a different color when irradiated with ultraviolet light than when observed with visible light. 3. A valuable printed matter in which a printed surface of a substrate on which information is printed is protected by a laminated film, and the laminated film is irradiated with a laser beam on a part or all of the region after being laminated. When the groove is formed, the printing portion of the printing surface corresponding to the groove is thermally affected by the laser beam when the groove is formed, and is observed with visible light when irradiated with ultraviolet light. A valuable printed material characterized by developing a different color from 4. A precious printed matter having a printed base material adhered to a backing paper via an adhesive, and a part or all of the surface of the base material is formed in a specific pattern by a laser beam. Irradiated and perforated, the above adhesive is almost exposed, and the almost exposed part of the above adhesive is thermally affected by the laser beam, and when it is irradiated with ultraviolet light, it develops a color different from that observed with visible light A valuable printed matter characterized by: 5. After the irradiation of the laser beam,
5. The valuable printed matter according to claim 4, wherein the surface of the base material is laminated and protected by a laminate film formed of a material having a small thickness or a high transmittance with respect to ultraviolet rays so as to transmit ultraviolet rays. 6. A precious printed matter in which an emulsion layer is coated or printed on a part or all of a surface of a substrate, and the emulsion layer is irradiated with a laser beam in a specific pattern, A valuable printed matter that has been affected, and that when irradiated with ultraviolet light, the specific pattern described above develops a color different from that observed with visible light. 7. A part or the whole area of a printing surface of a substrate,
By applying a laser beam to give a thermal effect to the printing portion of the printing surface, when the printing surface is irradiated with ultraviolet light, the printing portion of the printing surface develops a color different from that observed when viewed with visible light. And a method for producing a valuable printed matter, which is provided with a tampering prevention function. 8. A part or the whole area of the printing surface of the substrate,
By irradiating with a laser beam to give a thermal effect to the printing portion of the printing surface, by laminating the printing surface with a laminate film formed of a thin material or a material having a high ultraviolet transmittance so that ultraviolet light can be transmitted. A method for producing a valuable printed matter, characterized by imparting a forgery and tampering prevention function that, when irradiated with ultraviolet light, the printed portion of the printed surface develops a color different from that observed when observed with visible light. 9. A printing surface of a base material is laminated with a laminate film, and thereafter, a groove is formed by a laser beam in a part or the whole area of the laminate film, and the printed part of the printing surface included in the area is formed. A method for producing a valuable printed matter, characterized by imparting a forgery and tampering prevention function such that when irradiated with ultraviolet light by applying a heat effect, the printed portion of the printed surface develops a color different from that observed when observed with visible light. . 10. A base material is adhered to a mount via an adhesive, and a part or all of the surface of the base material is irradiated with a laser beam in a specific pattern and perforated, and the adhesive is almost exposed. In addition, when the base material is irradiated with ultraviolet rays by applying the heat effect of the laser beam, the part where the adhesive is almost exposed is colored in a different color from that observed by visible light, thereby providing a forgery and tampering prevention function. Production method of valuable printed materials. 11. In a part or all of the surface of the substrate,
Coating or printing an emulsion layer, irradiating the emulsion layer with a laser beam in a specific pattern to give a thermal effect, and irradiating the base material with ultraviolet light, and observing the specific pattern with visible light. A method for producing a valuable printed matter, which is provided with a function of preventing counterfeiting and tampering of coloring in different colors.