WO2020110458A1 - Printed material, booklet body, assembled body of light source and printed material, and authenticity determining method for printed material - Google Patents

Printed material, booklet body, assembled body of light source and printed material, and authenticity determining method for printed material Download PDF

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Publication number
WO2020110458A1
WO2020110458A1 PCT/JP2019/038849 JP2019038849W WO2020110458A1 WO 2020110458 A1 WO2020110458 A1 WO 2020110458A1 JP 2019038849 W JP2019038849 W JP 2019038849W WO 2020110458 A1 WO2020110458 A1 WO 2020110458A1
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WO
WIPO (PCT)
Prior art keywords
light
time
printed matter
printed
excitation light
Prior art date
Application number
PCT/JP2019/038849
Other languages
French (fr)
Japanese (ja)
Inventor
欣 閔
祐子 青山
Original Assignee
大日本印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Priority to JP2020558135A priority Critical patent/JP7294353B2/en
Publication of WO2020110458A1 publication Critical patent/WO2020110458A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light

Definitions

  • the present disclosure relates to a printed matter having a base material and a luminescent printed layer including a luminescent body, and a combination of a light source and the printed matter.
  • a printed matter requiring security such as securities, includes a base material and a light emitting printed layer provided on the base material by using a light emitting body to prevent counterfeiting or falsification, or a counterfeit product and a genuine product. Has a structure for identifying.
  • the authenticity determination method of the printed matter provided with these luminescent printing layers electromagnetic waves such as excitation light containing energy capable of exciting the luminescent material to the printed matter, irradiation, and irradiating the excitation energy
  • electromagnetic waves such as excitation light containing energy capable of exciting the luminescent material to the printed matter, irradiation, and irradiating the excitation energy
  • a method of detecting a afterglow phenomenon, which is emitted while attenuating after being stopped, by a reading device such as a sensor or a machine is generally used.
  • the light emitter is a visible light emitter
  • a simple light source such as a black light as an excitation source to authenticate light emission with human eyes.
  • the emission color from the light emitting print layer can be changed by moving the excitation light emitted from the black light to the printed matter, the light emission from the light emitting print layer can be reliably verified visually. It is convenient to be able to
  • the present disclosure has been made in consideration of visually identifying light emission using a generally available light source such as a black light, and the light-emitting printing layer can be easily and reliably moved simply by moving the light source. It is an object of the present invention to provide a printed matter in which a color change of the emission color from the can be visually recognized, and a combination of the light source and the printed matter.
  • the present disclosure is a printed matter that is irradiated with excitation light from a light source, and in a printed matter in which an excitation light irradiation region is formed in the printed matter, a base material and light emission provided on the base material using a light-emitting body.
  • a printing layer wherein the luminescent printing layer has a first time from the start of irradiation of excitation light until the emission intensity reaches saturation, and the afterglow time after the irradiation of excitation light is stopped. Is the second time, and the time from the irradiation of the excitation light until the emission intensity reaches saturation is the third time less than the first time, and after the irradiation of the excitation light is stopped.
  • a luminous body having an afterglow time of a fourth time less than the second time, and the luminous printing layer comprises a strip, or a plurality of unit luminous prints arranged in series.
  • the width of the strip or the aggregate is w
  • the length is l
  • the maximum length of the irradiation region of the excitation light is a, w ⁇ a
  • the present disclosure provides an additional printing layer on the substrate separately from the luminescent printing layer, and the additional printing layer is a color of a luminescent color when the luminescent printing layer is stopped by irradiating the excitation light.
  • the luminescent printed layer has a plurality of colored portions, and each colored portion has a color corresponding to a color change of luminescent color when the luminescent printed layer is stopped by irradiating the excitation light. It is a printed matter. According to the present disclosure, even a person who does not know the light emission characteristics in advance can easily visually determine the authenticity.
  • the first time is 0.5 s or more
  • the second time is 5 s or more
  • the third time is 0.1 s or less
  • the fourth time is 0.1 s or less
  • the present disclosure is a printed matter in which the light emitter A emits green light and the light emitter B emits red light.
  • the present disclosure is a printed matter in which an overcoat layer is provided so as to cover the light emitting printed layer.
  • the present disclosure is a printed matter in which personal information relating to a face photograph or nationality or address is provided on the base material, and the light emitting print layer is provided on a surface on which the personal information is described.
  • the present disclosure is a booklet including the printed matter described above.
  • the present disclosure includes a light source that irradiates excitation light, and a printed matter that is irradiated with excitation light from the light source, and a printed matter in which an irradiation region of excitation light is formed in the printed matter, the printed matter, a substrate, A luminescent printed layer provided by using a luminescent material on the substrate, the luminescent printed layer, the time from the start of irradiation of excitation light until the emission intensity reaches saturation is a first time, And the illuminant A whose afterglow time is 2 hours after the irradiation of the excitation light is stopped, and the time from the irradiation of the excitation light until the emission intensity reaches saturation is less than the 1st time.
  • the luminous body has a luminous body B having a lapse of 3 hours and a afterglow time after the irradiation of the excitation light is stopped and is a fourth time shorter than the second time, and the luminous printed layer is composed of a strip. Or an elongated aggregate including a plurality of unit light-emission printing layers arranged continuously, the width of the strip or the aggregate is w, the length is l, and the excitation light is irradiated.
  • This is a combination of a light source and a printed material, where w ⁇ a ⁇ l, where a is the maximum length of the region.
  • the present disclosure in a method for determining authenticity of a printed matter using a combination of the above-described light source and a printed matter, a step of irradiating the printed matter with excitation light from the light source, and the strip-shaped body of the light emitting printed layer or A step of moving the irradiation region of the excitation light along the aggregate and visually recognizing a color change of the luminescent color emitted from the luminescent printed layer to determine the authenticity of the printed matter; This is a false decision method.
  • FIG. 1 is a diagram showing the intensity of emission color after irradiation with excitation light according to the present embodiment.
  • FIG. 2 is an enlarged view showing the intensity of the emission color after the excitation light is stopped according to the present embodiment.
  • 3A is a side view showing the printed matter according to the present embodiment, which is a cross-sectional view taken along the line AA of FIG. 3B.
  • FIG. 3B is a plan view showing the printed matter according to the present embodiment.
  • FIG. 4 is a diagram showing a combination of a light source and a printed material according to the present embodiment.
  • FIG. 5 is a diagram showing an example of the light emitting print layer.
  • FIG. 6 is a diagram showing another example of the light emitting print layer.
  • FIG. 7 is a diagram showing the operation of the present embodiment.
  • FIG. 8 is a diagram showing the operation of this embodiment.
  • FIG. 9 is a diagram showing a modification of the embodiment shown in FIG.
  • FIG. 10 is a side view showing a printed matter according to a modified example.
  • FIG. 11A is a diagram showing a booklet that is an application example of the present embodiment.
  • FIG. 11B is a diagram showing a state where the booklet shown in FIG. 11A is irradiated with excitation light.
  • the printed matter 10 is irradiated with, for example, ultraviolet light (UV light) having a central wavelength of 365 nm from an LED light source 25 forming a black light.
  • UV light ultraviolet light
  • the UV light emitted from the LED light source functions as excitation light that excites a light emitting body of the light emitting print layer 20 described later to emit light, and forms a circular irradiation area 25A on the printed material 10. (See Figures 7 and 8).
  • such a printed matter 10 includes a base material 11 made of a synthetic resin, a general print layer 12 provided on the base material 11 to form a printed pattern 1, and a general print layer 12 provided on the base material 11.
  • the light emitting printing layer 20 and the overcoat layer 13 that covers the general printing layer 12 and the light emitting printing layer 20 provided on the base material 11 are provided.
  • FIG. 3A is a side view showing the printed matter 10
  • FIG. 3A is a sectional view taken along the line AA of FIG. 3B.
  • the base material 11 is made of polycarbonate (PC) or polyethylene terephthalate (PET), amorphous polyester (PET-G), polyvinyl chloride (PVC), polypropylene (PP).
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PET-G amorphous polyester
  • PVC polyvinyl chloride
  • PP polypropylene
  • the overcoat layer 13 is made of polycarbonate (PC) or polyethylene terephthalate (PET), amorphous polyester (PET-G), polyvinyl chloride (PVC), polypropylene (PP).
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PET-G amorphous polyester
  • PVC polyvinyl chloride
  • PP polypropylene
  • the general printing layer 12 is formed by using a normal printing ink.
  • a normal printing ink As the printing method, offset printing, silk screen printing, inkjet printing, or any other printing method capable of printing on a substrate is appropriately selected.
  • the color of the general print layer 12 under visible light is chromatic and does not have transparency. Any color or ink that can be printed by the above printing method may be used.
  • the light emitting printed layer 20 is obtained by printing on the base material 11 or the general printed layer 12 using a light emitting body which includes the light emitting body A and the light emitting body B and emits light when irradiated with excitation light.
  • the color of the light emitting print layer 20 may be colorless or colorless and transparent, may be the original body color of the pigment, or may be a color pigment to be mixed. It may be a chromatic color or a transparent chromatic color.
  • the color of the light emitting print layer 20 may be colorless or colorless and transparent, or the light emitters A and B may be mixed with color pigments.
  • the chromatic color of the color pigment is preferably a light color.
  • preferable forms and composition ratios change each time depending on the types of inks and pigments.
  • the time (saturation time) from the start of irradiation of excitation light until the emission intensity reaches saturation is the first time (for example, 0.5 s or more), and the afterglow time after the irradiation of excitation light is stopped Is the second time (for example, 5 s or more) and the third time (for example, 0.1 s) when the time (saturation time) from the irradiation of the excitation light until the emission intensity reaches saturation is less than the first time.
  • the fourth time for example, 0.1 s or less
  • the afterglow time in the present embodiment is the elapsed time when the emission of the excitation wavelength light is stopped when the illuminant is measured by the measuring means described later and the emission intensity from the illuminant is almost no longer detected from there.
  • a spectrofluorometer for example, FP-6600 manufactured by JASCO Corporation
  • the emission spectrum having the emission intensity of the light emitting body as the vertical axis and the elapsed time from the time when the irradiation is started as the horizontal axis is obtained.
  • the maximum emission peak wavelength is detected in the obtained emission spectrum, and this maximum emission peak wavelength is called a detection wavelength.
  • the emission intensity of the detection wavelength is 0, which is the intensity value when the excitation light is stopped.
  • the time until it becomes 0.01% or less is the afterglow time (lifetime).
  • the saturation time of the light emitter means that when the shutter opening time for irradiating the light from the light source on the excitation wavelength light irradiation side is set to 0 s, the emission intensity of the detection wavelength is further increased from the time point of 0 s. The time required to reach the maximum value (saturated emission intensity).
  • the light-emitting body A constituting the light-emitting body of the light-emitting printing layer 20 is made of, for example, a phosphor
  • the light-emitting body B is made of a fluorescent body. It suffices that the emission color of fluorescence of the light-emitting body B and the emission color of phosphorescence of the light-emitting body A are different, and not only one kind of light-emitting body A and one kind of light-emitting body B but also at least two or more kinds of light-emitting body It is also possible to use A and two or more types of luminous bodies B.
  • the emission color of phosphorescence and the emission color of fluorescence have a complementary color relationship.
  • the luminous body A is made of a green phosphor (SrAl 2 0 4 :Eu, Dy or Sr 4 Al 14 0 25 :Eu, Dy), and the luminous body B is a red phosphor (for example, YVO. 4 : Bi, Eu).
  • the saturation time of the luminous body A is 0.5 s or more
  • the afterglow time is 5 s or more
  • the saturation time of the luminous body B is, for example, 0.1 s or less
  • the afterglow time is, for example, 0.1 s or less.
  • the light emitting printing layer 20 is formed by printing using the light emitting ink including the light emitting body having the light emitting body A and the light emitting body B described above.
  • the printing method offset printing, silk screen printing, inkjet printing, or any other printing method capable of printing on a substrate is appropriately selected.
  • the phosphor ink includes, in addition to the phosphor A and the phosphor B, an aqueous varnish, a solvent-type varnish, an oxidation-polymerizable varnish, a radiation-curable varnish, a radiation-curable and an oxidative-polymerization hybrid varnish, and the like.
  • the luminescent ink contains various varnishes as described above, and its viscosity and other properties are adjusted so that it is mixed well.
  • the mixing ratio of the luminescent material may be about 1 to 60% by weight of the luminescent ink. From the viewpoint of emission intensity and economical efficiency, the mixing ratio of the luminescent material is more preferably 10 to 50% by weight in the luminescent ink.
  • Fluorescent material ink is prepared by sufficiently dispersing the luminescent material in a varnish using a three-roll mill, ball mill, beadle, or the like.
  • the kneading method and the proper viscosity are appropriately selected depending on the method of applying the phosphor ink.
  • the luminescent ink may be made into an ink or a paste by mixing another color material or a functional material within a range that does not interfere with light emission. Is also good.
  • a general printing layer 12 for forming a print pattern 1 formed in advance by using a normal printing ink is provided on the base material 11, and the luminescent ink is superposed on the general printing layer 12 so that the luminescent printing layer is formed.
  • Form 20 When forming the light emitting print layer 20 on the general print layer 12 in this way, if the light emitting print layer 20 is white, a part of the general print layer 12 disappears. Therefore, in the present embodiment, the light emitting printing layer 20 contains a pigment. This makes it possible to balance colors between the light emitting print layer 20 and the general print layer 12.
  • the luminescent printed layer 20 may be a white printed layer.
  • a generally known printing method can be used, and printing or coating of intaglio, letterpress, offset, screen, gravure, flexo, ink jet, etc.
  • a method can be used, and the phosphor ink may be applied onto the substrate 11 by a combination of these printing methods.
  • the luminescent ink for example, the following materials can be used.
  • the printed matter 10 has an additional printing layer 30 provided on the base material 11 separately from the light emitting printing layer 20.
  • the light emitting printing layer 20 is made of a light emitting body including a light emitting body A made of a green phosphor and a light emitting body B made of a red phosphor, and when UV light is emitted from the LED light source 25, the light emitting body A is saturated.
  • the time is 0.5 s or more
  • the afterglow time is 5 s or more
  • the light-emitting body B has the saturation time or 0.1 s or less and the afterglow time is 0.1 s or less.
  • the light emitting printing layer 20 emits red light, and the light emitting printing layer 20 gradually emits green light until the saturation time (0.5 s or more) of the light emitting body A is reached.
  • the emission print layer 20 shows a continuous change in the emission color from red light to yellow light, and the emission print layer 20 emits red light and green light after the saturation time elapses, so the emission print layer 20 emits yellow light. The light of appears. After that, when the irradiation of UV light is stopped, the luminous printing layer 20 emits green light because the afterglow time of the luminous body B is 0.1 s or less (see FIGS. 1 and 2).
  • Red is a color having a dominant wavelength hue at 600 to 700 nm in the xy chromaticity diagram
  • yellow is a color having a dominant wavelength hue at 550 to 600 nm in the xy chromaticity diagram
  • green is 490 to 550 nm in the xy chromaticity diagram.
  • the color has a hue of the dominant wavelength.
  • the xy chromaticity diagram for example, an xy chromaticity diagram defined by CIE1931 can be used.
  • the green color gradually becomes stronger until saturation, the 0s red color also gradually becomes yellow.
  • Intermediate colors such as red-orange or orange between red and yellow also pass, but the colors change continuously.
  • intermediate colors such as yellow-green do not pass and yellow changes directly to green.
  • FIG. 1 shows an emission spectrum in the case where the light-emitting body A and the light-emitting body B are irradiated with UV light of 365 nm as excitation light.
  • the emission intensity of the luminescent material A is saturated in about 1 s, and the emission intensity becomes about twice as high as that immediately after the irradiation with the excitation light.
  • the luminous intensity of the luminous body B is saturated immediately after irradiation (0.1 s or less).
  • the luminous body A has a saturated emission intensity of 300
  • the luminous body B has a saturated emission intensity of 1000.
  • the light emission intensity of each of the light emitter A and the light emitter B indicates the actual light emission intensity, and it can be seen that there is a difference in the saturated light emission intensity between the light emitter A and the light emitter B. It should be noted that, for example, there is almost no difference in saturated emission intensity, and if the mixing ratio is adjusted even between the light-emitting bodies having the same emission intensity, the color change of the emission color can be visually recognized.
  • the emission color differs depending on the mixing ratio of the light emitters, and the color change range of the emission color also changes.
  • the color change range indicates, for example, a change range of each color of red, yellow, and green in the present embodiment.
  • FIG. 2 shows an emission spectrum after the irradiation of the excitation light is stopped.
  • the light emitter A emits light for about 10 s or more after being irradiated with UV light until it stops emitting light. This means that the light emitting body A has characteristics as a light storing body.
  • the light-emitting body B does not emit light almost at the same time (0.1 s or less) when the UV irradiation is stopped.
  • an additional printing layer 30 is provided separately from the light emitting printing layer 20 in accordance with the color change of the light emission color emitted from the light emitting printing layer 20 of the printed matter 10. It has a red colored portion 30a, a yellow colored portion 30b, and a green colored portion 30c according to the color change of the emission color emitted from the layer 20. Therefore, the inspector who confirms the additional printing layer 30 including the red coloring portion 30a, the yellow coloring portion 30b, and the green coloring portion 30c confirms the additional printing layer 30, and the emission color emitted from the light emitting printing layer 20. Can be expected to change color.
  • the luminescent printing layer 20 itself is made to contain different pigments so that the luminescent printing layer 20 has a red coloring part, a yellow coloring part and a green coloring part. It may be divided into three parts.
  • the additional printing layer 30 including the red coloring portion 30a, the yellow coloring portion 30b, and the green coloring portion 30c, or the light emitting printing layer partitioned into three portions of the red coloring portion, the yellow coloring portion, and the green coloring portion. 20 functions as a mark printing layer.
  • the light-emitting printing layer 20 of the printed matter 10 is composed of a strip-shaped body 21 as shown in FIG. 5, and this strip-shaped body 21 has a strip-shaped body 21a and white characters 21b provided in the strip-shaped body 21a.
  • the width of the strip 21 is w and the length thereof is l.
  • the light emitting print layer 20 may be composed of an elongated assembly 22 including a plurality of unit light emitting print layers 22a arranged continuously as shown in FIG.
  • the aggregate 22 including the plurality of unit light emitting print layers 22a forms the outer edge 22A, and the width of the outer line is w and the length thereof is l.
  • the width is w
  • the length is l
  • the diameter of 25 A is a
  • the diameter a of the irradiation region 25 A is larger than the width w of the strip 21 and smaller than the length 1 of the strip 21.
  • FIG. 7 shows the strip 21 formed in a straight line
  • FIG. 8 shows the strip 21 formed in a curved shape.
  • the light emitting print layer 20 is composed of the aggregate 22 including a plurality of unit light emitting print layers 22a arranged continuously, the width of the outer edge 22A of the aggregate 22 is w and the length thereof is l, And when the diameter of the circular irradiation area 25a of UV light is a, w ⁇ a ⁇ l.
  • the diameter a is the maximum length of the irradiation area 25A.
  • the length of the major axis is the maximum length of the irradiation area 25A.
  • the curved strip 21 shown in FIG. 8 is further extended to provide a strip 21 having a ring shape. May be.
  • the luminescent printing layer 20 has a ring-shaped strip 21
  • its width is w
  • its total length is l
  • the diameter of the circular irradiation region 25A of UV light is a.
  • the printed matter 10 described above is prepared, and the inspector irradiates the printed matter 10 with UV light from the LED light source 25.
  • the printed matter 10 is irradiated with UV light having a central wavelength of 365 nm from the LED light source 25, and the inspector consists of the strip 21 or the elongated assembly 22 of the UV light emitted from the LED light source 25.
  • the light emitting print layer 20 is moved along the longitudinal direction L.
  • the light emitting printing layer 20 is made of a light emitting body including a light emitting body A made of a green phosphor and a light emitting body B made of a red phosphor, and when UV light is emitted from the LED light source 25, the light emitting body A is saturated.
  • the time is 0.5 s or more
  • the afterglow time is 5 s or more
  • the light-emitting body B has a saturation time of 0.1 s or less and an afterglow time of 0.1 s or less.
  • the light emitting printing layer 20 Immediately after irradiation, the light emitting printing layer 20 emits red light, and when the saturation time (0.5 s or more) of the light emitting body A has passed, the light emitting printing layer 20 emits red light and green light and yellow light is emitted. Appears. After that, when the irradiation of UV light is stopped, the afterglow time of the light-emitting body B is 0.1 s or less, and thus green light is emitted (see FIGS. 1 and 2).
  • red light is emitted from the area on the moving direction side of the irradiation area 25A, and the UV light is emitted.
  • Yellow light is emitted from the area immediately after the moving direction side of the irradiation area 25A, and UV light existing on the opposite side of the moving direction has already been irradiated, and green light is emitted from the area not yet irradiated with UV light.
  • the red light region, the yellow light region, and the green light region are sequentially moved along the longitudinal direction of the light emitting print layer 20 in accordance with the movement of the UV light.
  • the inspector confirms the color change of the luminescent color emitted from the luminescent printing layer 20.
  • the inspector compares the color change of the luminescent color from the luminescent printing layer 20 with the red colored portion 30a, the yellow colored portion 30b, and the green colored portion c displayed on the additional printed layer 30 to obtain a printed matter. It is possible to reliably perform the authenticity determination for 10.
  • the width of the light emitting printing layer 20 composed of the strips 21 or the aggregate 22 is w
  • the length thereof is l
  • the diameter of the UV light irradiation region 25A is a, w ⁇ a ⁇ l. .. Therefore, when moving the irradiation area 25A, which is formed by being irradiated from the LED light source 25, along the longitudinal direction of the light emitting print layer 20, since w ⁇ a, the entire length of the width w of the light emitting print layer 20 is once set. Can be irradiated with UV light, and a color change of the luminescent color can be generated over the entire width w of the luminescent printing layer 20.
  • light is emitted from the light emitting print layer 20 only by irradiating the printed matter with the excitation light from the light source and moving the irradiation area of the excitation light on the printed matter 10.
  • the color change of the emission color can be surely visually recognized.
  • the printed matter 10 includes a base material 11 made of a synthetic resin, a general print layer 12 provided on the base material 11, a light emitting print layer 20 provided on the base material 11, and a light emitting print layer 20.
  • the example having the overcoat layer 13 provided on the above is shown, the printed matter 10 is not limited to this, the substrate 11 made of paper, the general print layer 12 provided on the substrate 11, and the substrate 11 It may have the light emitting printing layer 20 provided on the upper part (see FIG. 10). In FIG. 10, an overcoat layer is not provided on the light emitting print layer 20, and the light emitting print layer 20 is exposed to the outside.
  • the printed matter 10 having the base material 11, the printed pattern 1 or the general printed layer 12, and the additional printed layer 30 has been described, but the printed matter 10 is not limited to this, and may have personal information. ..
  • the personal information is information that only an individual can have, such as nationality, address, owner name, age, sex, personal number, passport number, and license number.
  • Personal information may be offset-printed or inkjet-printed with ink, or printed in a form in which a base material or a printing layer is perforated with laser light, or in a form that is printed on a laser coloring layer capable of laser printing by laser light irradiation. 10 may be provided.
  • the light emitting print layer 20 of the present disclosure may be partly or wholly laminated with the personal information, or may be provided at a location different from the personal information.
  • forgery can be made difficult by stacking the personal information provided by perforation of laser light and the light emitting print layer 20 of the present disclosure.
  • personal information is printed on the black laser coloring layer, the color is white, so when the light emitting printing layer 20 is provided at the printed portion 35, the change in the light emitting color can be confirmed at the printed portion. False determination becomes easy.
  • the printed matter 10 can be used as a material for security of booklets and cards.
  • the printed matter 10 itself is a booklet such as a passport, a passport data page, a bill, an ID certificate, a ticket, and a card (contact or non-contact integrated circuit (IC) card) layered structure. May be included. Thereby, even a person who does not know the light emission characteristics in advance can visually determine the authenticity.
  • the printed matter 10 having such personal information can be incorporated in a booklet body 10A such as a passport (see FIGS. 11A and 11B). As shown in FIGS.
  • the booklet 10A has a data page sandwiched between a plurality of pages 10a and 10b, and the data page is a printed material 10 of the present disclosure having personal information.
  • the printed matter 10 By irradiating the printed matter 10 with excitation light from the LED light source 25, the color change of the light emission from the light emitting print layer 20 can be confirmed at the printed portion 35.

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Abstract

[Problem] The present invention addresses the problem of causing a color change in the emission color emitted from a light-emitting printed layer to be reliably viewed by only moving a region irradiated with an excitation light on a printed material. [Solution] This printed material 10 has a light-emitting printed layer 20 comprising a light-emitting body including a light-emitting body A and a light-emitting body B. The saturation time of the light-emitting body B is shorter than that of the light-emitting body A, and the afterglow time of the light-emitting body B is shorter than that of the light-emitting body A. When w is the width of the light-emitting printed layer 20, l is the length of the light-emitting printed layer 20, and a is the diameter of the irradiation region 25A of UV light emitted from an LED light source 25, the relationship w≤a≤1 is satisfied.

Description

印刷物、冊子体、および光源と印刷物との組み合わせ体、および印刷物の真偽判定方法Printed matter, booklet, combination of light source and printed matter, and authenticity determination method for printed matter
　本開示は、基材と、発光体を含む発光印刷層とを有する印刷物、および光源と印刷物との組み合わせ体に関する。 The present disclosure relates to a printed matter having a base material and a luminescent printed layer including a luminescent body, and a combination of a light source and the printed matter.
　有価証券類のようにセキュリティが必要とされる印刷物は、基材と基材上に発光体を用いて設けられた発光印刷層とを備え、偽造や改ざんを防止すること又は偽造品と真正品を識別する構造をもつ。 A printed matter requiring security, such as securities, includes a base material and a light emitting printed layer provided on the base material by using a light emitting body to prevent counterfeiting or falsification, or a counterfeit product and a genuine product. Has a structure for identifying.
　これらの発光印刷層が付与された印刷物の真偽判別方法としては、印刷物に対して発光体を励起することができるエネルギーを含む励起光等の電磁波、放射線を照射し、励起エネルギーを照射してから停止後、減衰しながら放出していく残光現象を、センサー等の読取装置や機械で検知する方法が一般に用いられている。 The authenticity determination method of the printed matter provided with these luminescent printing layers, electromagnetic waves such as excitation light containing energy capable of exciting the luminescent material to the printed matter, irradiation, and irradiating the excitation energy A method of detecting a afterglow phenomenon, which is emitted while attenuating after being stopped, by a reading device such as a sensor or a machine is generally used.
　発光体が、可視発光体の場合、ブラックライト等の簡易的な光源を励起源として使用して人の目で発光を認証する方法もある。このような場合、印刷物に対してブラックライトから照射される励起光を移動させることにより発光印刷層からの発光色を変化させることができれば、目視により発光印刷層からの発光を確実に認証することができて都合がよい。 If the light emitter is a visible light emitter, there is also a method of using a simple light source such as a black light as an excitation source to authenticate light emission with human eyes. In such a case, if the emission color from the light emitting print layer can be changed by moving the excitation light emitted from the black light to the printed matter, the light emission from the light emitting print layer can be reliably verified visually. It is convenient to be able to
特許第５６１０１２１号公報Japanese Patent No. 5610121 特開２００７－２７７２８１号公報JP, 2007-277281, A
　本開示は、ブラックライト等の一般的に入手可能な光源を用いて、目視により発光を識別することを考慮してなされたものであり、光源を移動するだけで、容易かつ確実に発光印刷層からの発光色の色変化を視認することができる印刷物、および光源と印刷物との組み合わせ体を提供することを目的とする。 The present disclosure has been made in consideration of visually identifying light emission using a generally available light source such as a black light, and the light-emitting printing layer can be easily and reliably moved simply by moving the light source. It is an object of the present invention to provide a printed matter in which a color change of the emission color from the can be visually recognized, and a combination of the light source and the printed matter.
　本開示は、光源からの励起光が照射される印刷物であって、印刷物に励起光の照射領域が形式される印刷物において、基材と、前記基材上に発光体を用いて設けられた発光印刷層とを備え、前記発光印刷層は、励起光の照射を開始してから発光強度が飽和に達するまでの時間が第１時間となり、かつ前記励起光の照射を停止した後における残光時間が第２時間である発光体Ａと、前記励起光を照射してから発光強度が飽和に達するまでの時間が前記第１時間未満の第３時間となり、かつ前記励起光の照射を停止した後における残光時間が前記第２時間未満の第４時間である発光体Ｂとを有する発光体を備え、前記発光印刷層は帯状体からなるか、または連続して配置された複数の単位発光印刷層を含む細長状の集合体からなり、前記帯状体または前記集合体の幅をｗとし、その長さをｌとし、前記励起光の照射領域の最大長さをａとしたとき、ｗ≦ａ≦ｌとなる発光印刷層を有する印刷物である。
　本開示によれば、印刷物の発光印刷層に対して励起光を照射し、励起光を移動することで、容易に、かつ確実に発光印刷層からの発光色の色変化を視認することができる。 The present disclosure is a printed matter that is irradiated with excitation light from a light source, and in a printed matter in which an excitation light irradiation region is formed in the printed matter, a base material and light emission provided on the base material using a light-emitting body. A printing layer, wherein the luminescent printing layer has a first time from the start of irradiation of excitation light until the emission intensity reaches saturation, and the afterglow time after the irradiation of excitation light is stopped. Is the second time, and the time from the irradiation of the excitation light until the emission intensity reaches saturation is the third time less than the first time, and after the irradiation of the excitation light is stopped. A luminous body having an afterglow time of a fourth time less than the second time, and the luminous printing layer comprises a strip, or a plurality of unit luminous prints arranged in series. When the width of the strip or the aggregate is w, the length is l, and the maximum length of the irradiation region of the excitation light is a, w≦a It is a printed matter having a light emitting print layer satisfying ≦l.
According to the present disclosure, by irradiating the luminescent printing layer of a printed material with the excitation light and moving the excitation light, it is possible to easily and reliably visually recognize the color change of the luminescent color from the luminescent printing layer. ..
　本開示は、前記基材上に前記発光印刷層から分離して追加印刷層を設け、この追加印刷層は前記発光印刷層に対して前記励起光を照射して停止した場合の発光色の色変化に対応する色をもつ複数の着色部を有する、印刷物である。
　本開示によれば、追加印刷層により、発光印刷層が発光する色の色変化が何色となるのかを事前に確認することができ、発光印刷層を偽造されても、追加印刷層によって真偽判定が可能となる。また、発光特性をあらかじめ知らない人でも、目視で真偽判定を行うことができる。 The present disclosure provides an additional printing layer on the substrate separately from the luminescent printing layer, and the additional printing layer is a color of a luminescent color when the luminescent printing layer is stopped by irradiating the excitation light. A printed matter having a plurality of colored portions having colors corresponding to changes.
According to the present disclosure, by the additional printing layer, it is possible to confirm in advance how many color changes the colors emitted by the light emitting printing layer will be, and even if the light emitting printing layer is forged, the additional printing layer will be effective. False determination is possible. Further, even a person who does not know the light emitting characteristics in advance can visually determine the authenticity.
　本開示は、前記発光印刷層は着色された複数の着色部をもち、各着色部は前記発光印刷層に対して前記励起光を照射し停止した場合の発光色の色変化に対応する色をもつ、印刷物である。
　本開示によれば、発光特性をあらかじめ知らない人でも、容易に目視で真偽判定を行うことができる。 In the present disclosure, the luminescent printed layer has a plurality of colored portions, and each colored portion has a color corresponding to a color change of luminescent color when the luminescent printed layer is stopped by irradiating the excitation light. It is a printed matter.
According to the present disclosure, even a person who does not know the light emission characteristics in advance can easily visually determine the authenticity.
　本開示は、前記第１時間は０．５ｓ以上であり、前記第２時間は５ｓ以上であり、前記第３時間は０．１ｓ以下であり、前記第４時間は０．１ｓ以下である、印刷物である。 In the present disclosure, the first time is 0.5 s or more, the second time is 5 s or more, the third time is 0.1 s or less, and the fourth time is 0.1 s or less, It is a printed matter.
　本開示は、前記発光体Ａは緑色を発光し、前記発光体Ｂは赤色を発光する、印刷物である。 The present disclosure is a printed matter in which the light emitter A emits green light and the light emitter B emits red light.
　本開示は、前記発光印刷層を覆ってオーバーコート層が設けられている、印刷物である。 The present disclosure is a printed matter in which an overcoat layer is provided so as to cover the light emitting printed layer.
　本開示は、前記基材上に、顔写真または国籍や住所に関する個人情報が設けられており、前記個人情報を記載する面に前記発光印刷層が設けられている、印刷物である。 The present disclosure is a printed matter in which personal information relating to a face photograph or nationality or address is provided on the base material, and the light emitting print layer is provided on a surface on which the personal information is described.
　本開示は、上記記載の印刷物を備える、冊子体である。 The present disclosure is a booklet including the printed matter described above.
　本開示は、励起光を照射する光源と、前記光源からの励起光が照射される印刷物であって印刷物に励起光の照射領域が形成される印刷物とを備え、前記印刷物は、基材と、前記基材上に発光体を用いて設けられた発光印刷層とを備え、前記発光印刷層は、励起光の照射を開始してから発光強度が飽和に達するまでの時間が第１時間となり、かつ前記励起光の照射を停止した後における残光時間が第２時間である発光体Ａと、前記励起光を照射してから発光強度が飽和に達するまでの時間が前記第１時間未満の第３時間となり、かつ前記励起光の照射を停止した後における残光時間が前記第２時間未満の第４時間である発光体Ｂとを有する発光体を備え、前記発光印刷層は帯状体からなるか、または連続して配置された複数の単位発光印刷層を含む細長状の集合体からなり、前記帯状体または前記集合体の幅をｗとし、その長さをｌとし、前記励起光の照射領域の最大長さをａとしたとき、ｗ≦ａ≦ｌとなる、光源と印刷物との組み合わせ体である。 The present disclosure includes a light source that irradiates excitation light, and a printed matter that is irradiated with excitation light from the light source, and a printed matter in which an irradiation region of excitation light is formed in the printed matter, the printed matter, a substrate, A luminescent printed layer provided by using a luminescent material on the substrate, the luminescent printed layer, the time from the start of irradiation of excitation light until the emission intensity reaches saturation is a first time, And the illuminant A whose afterglow time is 2 hours after the irradiation of the excitation light is stopped, and the time from the irradiation of the excitation light until the emission intensity reaches saturation is less than the 1st time. The luminous body has a luminous body B having a lapse of 3 hours and a afterglow time after the irradiation of the excitation light is stopped and is a fourth time shorter than the second time, and the luminous printed layer is composed of a strip. Or an elongated aggregate including a plurality of unit light-emission printing layers arranged continuously, the width of the strip or the aggregate is w, the length is l, and the excitation light is irradiated. This is a combination of a light source and a printed material, where w≦a≦l, where a is the maximum length of the region.
　本開示は、上記記載の光源と印刷物との組み合わせ体を用いた印刷物の真偽判定方法において、前記印刷物上に前記光源からの励起光を照射する工程と、前記発光印刷層の前記帯状体または前記集合体に沿って前記励起光の照射領域を移動させ、前記発光印刷層から発光される発光色の色変化を視認して印刷物の真偽判定を行う工程と、を備えた、印刷物の真偽判定方法である。 The present disclosure, in a method for determining authenticity of a printed matter using a combination of the above-described light source and a printed matter, a step of irradiating the printed matter with excitation light from the light source, and the strip-shaped body of the light emitting printed layer or A step of moving the irradiation region of the excitation light along the aggregate and visually recognizing a color change of the luminescent color emitted from the luminescent printed layer to determine the authenticity of the printed matter; This is a false decision method.
　本開示によれば印刷物に対して光源から照射される励起光を移動するだけで、容易かつ確実に発光印刷層からの発光色の色変化を視認することができる。 According to the present disclosure, it is possible to easily and surely visually check the color change of the luminescent color from the luminescent printing layer simply by moving the excitation light emitted from the light source to the printed matter.
図１は本実施の形態による励起光を照射してからの発光色の強度を示す図。FIG. 1 is a diagram showing the intensity of emission color after irradiation with excitation light according to the present embodiment. 図２は本実施の形態による励起光を停止してからの発光色の強度を示す拡大図。FIG. 2 is an enlarged view showing the intensity of the emission color after the excitation light is stopped according to the present embodiment. 図３Ａは本実施の形態による印刷物を示す側面図であって、図３ＢのＡ－Ａ線断面図。3A is a side view showing the printed matter according to the present embodiment, which is a cross-sectional view taken along the line AA of FIG. 3B. 図３Ｂは本実施の形態による印刷物を示す平面図。FIG. 3B is a plan view showing the printed matter according to the present embodiment. 図４は本実施の形態による光源と印刷物の組み合わせ体を示す図。FIG. 4 is a diagram showing a combination of a light source and a printed material according to the present embodiment. 図５は発光印刷層の一例を示す図。FIG. 5 is a diagram showing an example of the light emitting print layer. 図６は発光印刷層の他の例を示す図。FIG. 6 is a diagram showing another example of the light emitting print layer. 図７は本実施の形態の作用を示す図。FIG. 7 is a diagram showing the operation of the present embodiment. 図８は本実施の形態の作用を示す図。FIG. 8 is a diagram showing the operation of this embodiment. 図９は図８に示す実施の形態の変形例を示す図。FIG. 9 is a diagram showing a modification of the embodiment shown in FIG. 図１０は変形例による印刷物を示す側面図。FIG. 10 is a side view showing a printed matter according to a modified example. 図１１Ａは本実施の形態の応用例である冊子を示す図。FIG. 11A is a diagram showing a booklet that is an application example of the present embodiment. 図１１Ｂは図１１Ａに示す冊子に励起光を照射した状態を示す図。FIG. 11B is a diagram showing a state where the booklet shown in FIG. 11A is irradiated with excitation light.
＜本実施の形態＞
　以下、図面を参照して本実施の形態による印刷物、および光源と印刷物の組み合わせ体について説明する。 <This Embodiment>
Hereinafter, a printed material according to the present embodiment and a combination of a light source and a printed material will be described with reference to the drawings.
　まず、図３Ａ乃至図６により本実施の形態による印刷物１０について説明する。図３Ａ乃至図６に示すように、印刷物１０には例えば、ブラックライトを構成するＬＥＤ光源２５からの中心波長３６５ｎｍをもつ紫外光（ＵＶ光）が照射される。ＬＥＤ光源から照射されたＵＶ光は後述する発光印刷層２０の発光体を励起して発光させる励起光として機能するとともに、印刷物１０上に円形の照射領域２５Ａを形成する。（図７および図８参照）。 First, the printed matter 10 according to the present embodiment will be described with reference to FIGS. 3A to 6. As shown in FIGS. 3A to 6, the printed matter 10 is irradiated with, for example, ultraviolet light (UV light) having a central wavelength of 365 nm from an LED light source 25 forming a black light. The UV light emitted from the LED light source functions as excitation light that excites a light emitting body of the light emitting print layer 20 described later to emit light, and forms a circular irradiation area 25A on the printed material 10. (See Figures 7 and 8).
　このような印刷物１０は、図３Ａおよび図３Ｂに示すように、合成樹脂製の基材１１と、基材１１上に設けられ印刷絵柄１を形成する一般印刷層１２と、基材１１上設けられた発光印刷層２０と、基材１１上に設けられた一般印刷層１２および発光印刷層２０を覆うオーバーコート層１３とを備えている。ここで、図３Ａは印刷物１０を示す側面図であり、図３Ａは図３ＢのＡ－Ａ線断面図である。 As shown in FIGS. 3A and 3B, such a printed matter 10 includes a base material 11 made of a synthetic resin, a general print layer 12 provided on the base material 11 to form a printed pattern 1, and a general print layer 12 provided on the base material 11. The light emitting printing layer 20 and the overcoat layer 13 that covers the general printing layer 12 and the light emitting printing layer 20 provided on the base material 11 are provided. Here, FIG. 3A is a side view showing the printed matter 10, and FIG. 3A is a sectional view taken along the line AA of FIG. 3B.
　このうち、基材１１はポリカーボネート（ＰＣ）製またはポリエチレンテレフタレート（ＰＥＴ）製、非結晶性ポリエステル（ＰＥＴ－Ｇ）製、ポリ塩化ビニル（ＰＶＣ）製、ポリプロピレン（ＰＰ）製となっている。 Of these, the base material 11 is made of polycarbonate (PC) or polyethylene terephthalate (PET), amorphous polyester (PET-G), polyvinyl chloride (PVC), polypropylene (PP).
　またオーバーコート層１３はポリカーボネート（ＰＣ）製またはポリエチレンテレフタレート（ＰＥＴ）製、非結晶性ポリエステル（ＰＥＴ－Ｇ）製、ポリ塩化ビニル（ＰＶＣ）製、ポリプロピレン（ＰＰ）製となっている。 The overcoat layer 13 is made of polycarbonate (PC) or polyethylene terephthalate (PET), amorphous polyester (PET-G), polyvinyl chloride (PVC), polypropylene (PP).
　また一般印刷層１２は、通常の印刷インキを用いて形成される。印刷方法は、オフセット印刷、シルクスクリーン印刷、インクジェット印刷など、基材に印刷可能な印刷方法を適宜選択する。一般印刷層１２の可視光下での色彩は、有彩色であり、透過性は有さない。上記印刷方法で印刷できる色やインクなら、何を使用してもよい。 Further, the general printing layer 12 is formed by using a normal printing ink. As the printing method, offset printing, silk screen printing, inkjet printing, or any other printing method capable of printing on a substrate is appropriately selected. The color of the general print layer 12 under visible light is chromatic and does not have transparency. Any color or ink that can be printed by the above printing method may be used.
　また発光印刷層２０は、発光体Ａと発光体Ｂとを含み励起光が照射されて発光する発光体を用いて基材１１上または一般印刷層１２上に印刷することにより得られる。発光印刷層２０を基材１１上に印刷する場合、発光印刷層２０の色彩は、無色あるいは無色透明であってもよいし、顔料本来のボディカラーであってもよいし、混合する色顔料の有彩色あるいは透過性のある有彩色であってもよい。発光印刷層２０を一般印刷層１２上に重ねて印刷する場合、発光印刷層２０の色彩は、無色あるいは無色透明であってもよいし、発光体Ａ、Ｂを色顔料と混合してもよい。一般印刷層１２の色彩の色と見た目に違和感のない印刷物とすることが必要である。また、混合する色顔料の色味が濃いと、発光体Ａ、Ｂの発光色が吸収されてしまい、発光色の変化は視認しにくくなるため、色顔料の有彩色は淡色が好ましい。ただし、インクや色顔料の種類は世の中に多く流通し、数百種類以上存在しているため、インキや顔料の種類によって、好ましい形態や組成比はその都度変化する。 Further, the light emitting printed layer 20 is obtained by printing on the base material 11 or the general printed layer 12 using a light emitting body which includes the light emitting body A and the light emitting body B and emits light when irradiated with excitation light. When the light emitting print layer 20 is printed on the base material 11, the color of the light emitting print layer 20 may be colorless or colorless and transparent, may be the original body color of the pigment, or may be a color pigment to be mixed. It may be a chromatic color or a transparent chromatic color. When the light emitting print layer 20 is printed by being overlaid on the general print layer 12, the color of the light emitting print layer 20 may be colorless or colorless and transparent, or the light emitters A and B may be mixed with color pigments. .. It is necessary to obtain a printed matter that does not look strange with the color of the general print layer 12. Further, when the color pigments to be mixed have a strong tint, the emission colors of the light-emitters A and B are absorbed and changes in the emission colors are difficult to visually recognize. Therefore, the chromatic color of the color pigment is preferably a light color. However, since the types of inks and color pigments are widely distributed in the world and there are several hundred types or more, preferable forms and composition ratios change each time depending on the types of inks and pigments.
　発光体は励起光の照射を開始してから発光強度が飽和に達するまでの時間（飽和時間）が第1時間（例えば０．５ｓ以上）となり、励起光の照射を停止した後における残光時間が第２時間（例えば５ｓ以上）となる発光体Ａと、励起光を照射してから発光強度が飽和に達するまでの時間（飽和時間）が第１時間未満の第３時間（例えば０．１ｓ以下）となり、励起光の照射を停止した後における残光時間が第２時間未満の第４時間（例えば０．１ｓ以下）となる発光体Ｂとを含む。 The time (saturation time) from the start of irradiation of excitation light until the emission intensity reaches saturation is the first time (for example, 0.5 s or more), and the afterglow time after the irradiation of excitation light is stopped Is the second time (for example, 5 s or more) and the third time (for example, 0.1 s) when the time (saturation time) from the irradiation of the excitation light until the emission intensity reaches saturation is less than the first time. The following) is satisfied, and the afterglow time after the irradiation of the excitation light is stopped is the fourth time (for example, 0.1 s or less) that is less than the second time.
　ここで「ｓ」は時間を表わす「秒」を意味する。 ”Here, “s” means “second” that represents time.
　また、本実施の形態における残光時間について説明する。本実施の形態における残光時間とは、後述する測定手段により発光体を測定した際、励起波長光の照射停止時を０ｓとし、そこから発光体からの発光強度がほぼ検出されなくなった経過時間をいう。測定手段は、本実施の形態において、分光蛍光光度計（例えば、日本分光製、ＦＰ－６６００）を用いる場合を説明する。例えば、励起波長光として波長３６５ｎｍの光を発光体に対して所定時間照射すると、発光体の発光強度を縦軸、照射をスタートした頃からの経過時間を横軸とする発光スペクトルが得られる。得られた発光スペクトルには極大発光ピーク波長が検出され、この極大発光ピーク波長を検出波長と呼称する。励起波長光照射側の光源からの光をシャッタにより遮蔽した時点を０ｓ（つまり、励起波長光の照射停止時）とすると、そこから、検出波長の発光強度が励起光停止時点の強度値の０．０１％以下になるまでの時間が残光時間（寿命）となる。 Also, the afterglow time in the present embodiment will be described. The afterglow time in the present embodiment is the elapsed time when the emission of the excitation wavelength light is stopped when the illuminant is measured by the measuring means described later and the emission intensity from the illuminant is almost no longer detected from there. Say. The case where a spectrofluorometer (for example, FP-6600 manufactured by JASCO Corporation) is used as the measuring means in the present embodiment will be described. For example, when light having a wavelength of 365 nm as the excitation wavelength light is irradiated to the light emitting body for a predetermined time, an emission spectrum having the emission intensity of the light emitting body as the vertical axis and the elapsed time from the time when the irradiation is started as the horizontal axis is obtained. The maximum emission peak wavelength is detected in the obtained emission spectrum, and this maximum emission peak wavelength is called a detection wavelength. When the time when the light from the light source on the irradiation side of the excitation wavelength light is blocked by the shutter is 0 s (that is, when the irradiation of the excitation wavelength light is stopped), the emission intensity of the detection wavelength is 0, which is the intensity value when the excitation light is stopped. The time until it becomes 0.01% or less is the afterglow time (lifetime).
　また、発光体の飽和時間とは、励起波長光照射側の光源からの光を照射するためにシャッタを開いた時点を０ｓとしたとき、０ｓの時点から、検出波長の発光強度がそれ以上上がらない最大値（飽和発光強度）に達するまでの時間をいう。 Further, the saturation time of the light emitter means that when the shutter opening time for irradiating the light from the light source on the excitation wavelength light irradiation side is set to 0 s, the emission intensity of the detection wavelength is further increased from the time point of 0 s. The time required to reach the maximum value (saturated emission intensity).
　本実施の形態において、発光印刷層２０の発光体を構成する発光体Ａは、例えば、りん光体からなり、発光体Ｂは蛍光体からなる。そして、発光体Ｂの蛍光の発光色と発光体Ａのりん光の発光色が異なれば良く、一種類の発光体Ａと、一種類の発光体Ｂのみならず、少なくとも二種以上の発光体Ａと、二種以上の発光体Ｂを使用することもできる。なお、この場合において、視認性の観点から、りん光の発光色と蛍光の発光色は、補色の関係にあることが最も好ましい。例えば本実施の形態において、発光体Ａは、緑色蓄光体（ＳｒＡｌ２０４：Ｅｕ，ＤｙまたはＳｒ４Ａｌ１４０２５：Ｅｕ，Ｄｙ）からなり、発光体Ｂは赤色蛍光体（例えば、ＹＶＯ４：Ｂｉ，Ｅｕ）からなる。 In the present embodiment, the light-emitting body A constituting the light-emitting body of the light-emitting printing layer 20 is made of, for example, a phosphor, and the light-emitting body B is made of a fluorescent body. It suffices that the emission color of fluorescence of the light-emitting body B and the emission color of phosphorescence of the light-emitting body A are different, and not only one kind of light-emitting body A and one kind of light-emitting body B but also at least two or more kinds of light-emitting body It is also possible to use A and two or more types of luminous bodies B. In this case, from the viewpoint of visibility, it is most preferable that the emission color of phosphorescence and the emission color of fluorescence have a complementary color relationship. For example, in the present embodiment, the luminous body A is made of a green phosphor (SrAl 2 0 4 :Eu, Dy or Sr 4 Al 14 0 25 :Eu, Dy), and the luminous body B is a red phosphor (for example, YVO. 4 : Bi, Eu).
　また、発光体Ａの飽和時間は上述のように、０．５ｓ以上、残光時間は５ｓ以上、発光体Ｂの飽和時間は例えば０．１ｓ以下、残光時間も例えば０．１ｓ以下となっている。 As described above, the saturation time of the luminous body A is 0.5 s or more, the afterglow time is 5 s or more, the saturation time of the luminous body B is, for example, 0.1 s or less, and the afterglow time is, for example, 0.1 s or less. ing.
　本実施の形態において、発光印刷層２０は上述した発光体Ａと発光体Ｂを有する発光体を含む発光体インキを用い、印刷により形成される。印刷方法は、オフセット印刷、シルクスクリーン印刷、インクジェット印刷など、基材に印刷可能な印刷方法を適宜選択する。 In the present embodiment, the light emitting printing layer 20 is formed by printing using the light emitting ink including the light emitting body having the light emitting body A and the light emitting body B described above. As the printing method, offset printing, silk screen printing, inkjet printing, or any other printing method capable of printing on a substrate is appropriately selected.
　ここで発光体インキは、発光体Ａおよび発光体Ｂに加えて、更に水性ワニス、溶剤型ワニス、酸化重合性ワニス、放射線硬化型ワニス、放射線硬化型及び酸化重合のハイブリッドワニス等を含む。 Here, the phosphor ink includes, in addition to the phosphor A and the phosphor B, an aqueous varnish, a solvent-type varnish, an oxidation-polymerizable varnish, a radiation-curable varnish, a radiation-curable and an oxidative-polymerization hybrid varnish, and the like.
　また、発光体インキは、前述のように各種ワニスを含み、十分混入するようその粘度等が調整される。発光印刷層２０の形成方式によって異なるが、発光体の配合割合は、発光体インキの１～６０重量％程度とすれば良い。発光強度と経済性の観点から見ると、発光体の配合割合は、発光インキ中１０～５０重量％にすることがより好ましい。 Also, the luminescent ink contains various varnishes as described above, and its viscosity and other properties are adjusted so that it is mixed well. Although depending on the method of forming the luminescent printing layer 20, the mixing ratio of the luminescent material may be about 1 to 60% by weight of the luminescent ink. From the viewpoint of emission intensity and economical efficiency, the mixing ratio of the luminescent material is more preferably 10 to 50% by weight in the luminescent ink.
　発光体インキは、発光体を三本ロールミル、ボールミル又はビーズル等でワニス中に十分に分散させて作製される。なお、練合方法や適正粘度は、発光体インキを付与する方式によって適切に選定される。 Fluorescent material ink is prepared by sufficiently dispersing the luminescent material in a varnish using a three-roll mill, ball mill, beadle, or the like. The kneading method and the proper viscosity are appropriately selected depending on the method of applying the phosphor ink.
　発光体インキは、発光を妨げない範囲で他の色材又は機能性材料を混合してインキ化又はペースト化しても良く、あらかじめ、基材１１上に付与された下地上に重ねて付与しても良い。なお、基材１１上には、予め通常の印刷インキを用いて形成された印刷絵柄１を形成する一般印刷層１２が設けられ、発光インキはこの一般印刷層１２上に重ね合わせて発光印刷層２０を形成する。このように一般印刷層１２上に発光印刷層２０を重ねて形成する場合、発光印刷層２０が白色であると、一般印刷層１２の一部が消えてしまう。そこで本実施の形態においては、発光印刷層２０に顔料を含ませる。このことにより、発光印刷層２０と、一般印刷層１２との間で色彩のバランスを図ることができる。また、基材１１上に発光インキを付与して発光印刷層２０を形成する場合、発光印刷層２０は白色の印刷層であっってもよい。 The luminescent ink may be made into an ink or a paste by mixing another color material or a functional material within a range that does not interfere with light emission. Is also good. In addition, a general printing layer 12 for forming a print pattern 1 formed in advance by using a normal printing ink is provided on the base material 11, and the luminescent ink is superposed on the general printing layer 12 so that the luminescent printing layer is formed. Form 20. When forming the light emitting print layer 20 on the general print layer 12 in this way, if the light emitting print layer 20 is white, a part of the general print layer 12 disappears. Therefore, in the present embodiment, the light emitting printing layer 20 contains a pigment. This makes it possible to balance colors between the light emitting print layer 20 and the general print layer 12. When the luminescent ink is applied onto the base material 11 to form the luminescent printed layer 20, the luminescent printed layer 20 may be a white printed layer.
　発光体インキを基材１１に印刷又はコーティング等により付与する方式としては、一般に公知の印刷方法を用いることができ、凹版、凸版、オフセット、スクリーン、グラビア、フレキソ及びインクジェット等の印刷又はコーティング等の方式を用いることができ、これらの印刷方式の組み合わせにより、発光体インキを基材１１上に付与しても良い。 As a method of applying the phosphor ink to the base material 11 by printing or coating, a generally known printing method can be used, and printing or coating of intaglio, letterpress, offset, screen, gravure, flexo, ink jet, etc. A method can be used, and the phosphor ink may be applied onto the substrate 11 by a combination of these printing methods.
　具体的には発光体インキとして、例えば以下のような材料のものを用いることができる。
Figure JPOXMLDOC01-appb-T000001
 Specifically, as the luminescent ink, for example, the following materials can be used.
Figure JPOXMLDOC01-appb-T000001
　また図４に示すように、印刷物１０は基材１１上に発光印刷層２０から分離して設けられた追加印刷層３０を有する。 Further, as shown in FIG. 4, the printed matter 10 has an additional printing layer 30 provided on the base material 11 separately from the light emitting printing layer 20.
　上述のように発光印刷層２０は緑色蓄光体からなる発光体Ａと赤色蛍光体からなる発光体Ｂとを含む発光体からなり、ＬＥＤ光源２５からＵＶ光を照射すると、発光体Ａはその飽和時間が０．５ｓ以上、その残光時間が５ｓ以上となっており、発光体Ｂはその飽和時間か０．１ｓ以下、その残光時間が０．１ｓ以下となっているため、ＵＶ光の照射直後、発光印刷層２０は赤色の光を発光し、発光体Ａの飽和時間（０．５ｓ以上）になるまで、発光印刷層２０は緑色の光の発光が徐々に強くなり、発光印刷層２０は赤色の光から黄色の光までの発光色の連続的な変化が見られ、飽和時間が過ぎると発光印刷層２０は赤色の光と緑色の光を発光するため、発光印刷層２０から黄色の光が表れる。その後ＵＶ光の照射を停止すると、発光体Ｂの残光時間は０．１ｓ以下のため、発光印刷層２０は緑色の光を発光する（図１および図２参照）。 As described above, the light emitting printing layer 20 is made of a light emitting body including a light emitting body A made of a green phosphor and a light emitting body B made of a red phosphor, and when UV light is emitted from the LED light source 25, the light emitting body A is saturated. The time is 0.5 s or more, the afterglow time is 5 s or more, and the light-emitting body B has the saturation time or 0.1 s or less and the afterglow time is 0.1 s or less. Immediately after the irradiation, the light emitting printing layer 20 emits red light, and the light emitting printing layer 20 gradually emits green light until the saturation time (0.5 s or more) of the light emitting body A is reached. 20 shows a continuous change in the emission color from red light to yellow light, and the emission print layer 20 emits red light and green light after the saturation time elapses, so the emission print layer 20 emits yellow light. The light of appears. After that, when the irradiation of UV light is stopped, the luminous printing layer 20 emits green light because the afterglow time of the luminous body B is 0.1 s or less (see FIGS. 1 and 2).
　すなわち、発光印刷層２０に対してＵＶ光を照射して停止することにより、発光印刷層２０から発光する光の発光色は赤色→黄色→緑色に順次変化する。赤色はｘｙ色度図の６００～７００ｎｍに主波長の色相を有する色彩となり、黄色はｘｙ色度図の５５０～６００ｎｍに主波長の色相を有する色彩となり、緑色はｘｙ色度図の４９０～５５０ｎｍに主波長の色相を有する色彩となる。ここで、ｘｙ色度図としては、例えば、ＣＩＥ１９３１に規定されるｘｙ色度図を用いることができる。 That is, by irradiating the light emitting print layer 20 with UV light and stopping the light, the emission color of the light emitted from the light emitting print layer 20 sequentially changes from red to yellow to green. Red is a color having a dominant wavelength hue at 600 to 700 nm in the xy chromaticity diagram, yellow is a color having a dominant wavelength hue at 550 to 600 nm in the xy chromaticity diagram, and green is 490 to 550 nm in the xy chromaticity diagram. The color has a hue of the dominant wavelength. Here, as the xy chromaticity diagram, for example, an xy chromaticity diagram defined by CIE1931 can be used.
　具体的には、飽和まで緑色が徐々に強くなるため、０ｓの赤色も徐々に黄色になる。赤色→黄色の間の赤橙色やオレンジ色などの中間色も経過するが、色は連続的に変化する。他方、黄色→緑色に関して赤色は残光がないため、黄緑色などの中間色を経過せず、黄色から直接緑色になる。 Concretely, since the green color gradually becomes stronger until saturation, the 0s red color also gradually becomes yellow. Intermediate colors such as red-orange or orange between red and yellow also pass, but the colors change continuously. On the other hand, since there is no afterglow for red from yellow to green, intermediate colors such as yellow-green do not pass and yellow changes directly to green.
　ここで、ｘｙ色度図としては、参考文献「JIS Z8701：色の表示方法―ｘｙｚ表色系及びＸ10Ｙ10Z10表色系」の「sRGB/D65モデルまたはAdobe RGB/D50モデル」を挙げることができる。
　ところで図１は、発光体Ａと発光体Ｂに対して、励起光である３６５ｎｍのＵＶ光を照射した場合の発光スペクトルを示す。励起光を照射し続けた場合、発光体Ａは約１ｓで発光強度が飽和し、励起光照射直後よりも約２倍の発光強度となる。また、発光体Ｂは照射直後（０．１ｓ以下）で発光強度は飽和する。また、図１において、発光体Ａはその飽和する発光強度が３００となっており、発光体Ｂは、その飽和する発光強度が１０００となっている。この発光体Ａと発光体Ｂの各々の発光強度は、実際の発光強度を示しており、発光体Ａと発光体Ｂにはその飽和する発光強度に差があることがわかる。
　なお、例えば、飽和する発光強度の差がほとんど無く、同じ程度の発光強度を有する発光体同士でも混合比率を調整すれば、発光色の色変化を視認することができる。つまり、発光体の混合比率によって、発光色は異なり、発光色の色変化範囲も変わる。ここで、色変化範囲とは、例えば本実施形態においては赤色→黄色→緑色の各色の変化範囲のことを示す。また、図２は、励起光の照射を停止してからの発光スペクトルを示す。図２において、発光体Ａは、ＵＶ光を照射してから発光しなくなるまで、約１０ｓ以上発光することを示している。これは発光体Ａが蓄光体としての特性をもつことを意味する。一方、発光体ＢはＵＶ照射を停止するとほぼ同時（０．１ｓ以下）に発光しなくなることを示している。 Here, as the xy chromaticity diagram, "sRGB/D65 model or Adobe RGB/D50 model" in the reference "JIS Z8701: Color display method-xyz color system and X10Y10Z10 color system" can be mentioned.
By the way, FIG. 1 shows an emission spectrum in the case where the light-emitting body A and the light-emitting body B are irradiated with UV light of 365 nm as excitation light. When irradiation with the excitation light is continued, the emission intensity of the luminescent material A is saturated in about 1 s, and the emission intensity becomes about twice as high as that immediately after the irradiation with the excitation light. Further, the luminous intensity of the luminous body B is saturated immediately after irradiation (0.1 s or less). In FIG. 1, the luminous body A has a saturated emission intensity of 300, and the luminous body B has a saturated emission intensity of 1000. The light emission intensity of each of the light emitter A and the light emitter B indicates the actual light emission intensity, and it can be seen that there is a difference in the saturated light emission intensity between the light emitter A and the light emitter B.
It should be noted that, for example, there is almost no difference in saturated emission intensity, and if the mixing ratio is adjusted even between the light-emitting bodies having the same emission intensity, the color change of the emission color can be visually recognized. That is, the emission color differs depending on the mixing ratio of the light emitters, and the color change range of the emission color also changes. Here, the color change range indicates, for example, a change range of each color of red, yellow, and green in the present embodiment. Further, FIG. 2 shows an emission spectrum after the irradiation of the excitation light is stopped. In FIG. 2, it is shown that the light emitter A emits light for about 10 s or more after being irradiated with UV light until it stops emitting light. This means that the light emitting body A has characteristics as a light storing body. On the other hand, it is shown that the light-emitting body B does not emit light almost at the same time (0.1 s or less) when the UV irradiation is stopped.
　本実施の形態において、印刷物１０の発光印刷層２０から発光する発光色の色変化に対応して、発光印刷層２０から分離して追加印刷層３０を設けられ、追加印刷層３０は、発光印刷層２０から発光する発光色の色変化に応じて赤色着色部３０ａと、黄色着色部３０ｂと緑色着色部３０ｃとを有する。このため、赤色着色部３０ａ、黄色着色部３０ｂ、および緑色着色部３０ｃからなる追加印刷層３０を確認した検査員は、この追加印刷層３０を確認して発光印刷層２０から発光される発光色の色変化を予想することができる。 In the present embodiment, an additional printing layer 30 is provided separately from the light emitting printing layer 20 in accordance with the color change of the light emission color emitted from the light emitting printing layer 20 of the printed matter 10. It has a red colored portion 30a, a yellow colored portion 30b, and a green colored portion 30c according to the color change of the emission color emitted from the layer 20. Therefore, the inspector who confirms the additional printing layer 30 including the red coloring portion 30a, the yellow coloring portion 30b, and the green coloring portion 30c confirms the additional printing layer 30, and the emission color emitted from the light emitting printing layer 20. Can be expected to change color.
　なお、発光印刷層２０と別個独立して追加印刷層３０を設ける代わりに、発光印刷層２０自体に異なる顔料を含ませて、発光印刷層２０を赤色着色部、黄色着色部および緑色着色部の３つの部分に区画してもよい。 Instead of providing the additional printing layer 30 separately from the luminescent printing layer 20, the luminescent printing layer 20 itself is made to contain different pigments so that the luminescent printing layer 20 has a red coloring part, a yellow coloring part and a green coloring part. It may be divided into three parts.
　上述の実施の形態において、赤色着色部３０ａ、黄色着色部３０ｂおよび緑色着色部３０ｃからなる追加印刷層３０あるいは赤色着色部、黄色着色部および緑色着色部の３つの部分に区画された発光印刷層２０は、目印印刷層として機能する。 In the above-described embodiment, the additional printing layer 30 including the red coloring portion 30a, the yellow coloring portion 30b, and the green coloring portion 30c, or the light emitting printing layer partitioned into three portions of the red coloring portion, the yellow coloring portion, and the green coloring portion. 20 functions as a mark printing layer.
　ところで印刷物１０の発光印刷層２０は図５に示すように帯状体２１からなり、この帯状体２１は帯状体本体２１ａと、帯状体本体２１ａ中に設けられ白ヌキされた文字２１ｂとを有する。 By the way, the light-emitting printing layer 20 of the printed matter 10 is composed of a strip-shaped body 21 as shown in FIG. 5, and this strip-shaped body 21 has a strip-shaped body 21a and white characters 21b provided in the strip-shaped body 21a.
　図５において帯状体２１の幅はｗ、その長さはｌとなっている。 In FIG. 5, the width of the strip 21 is w and the length thereof is l.
　あるいは発光印刷層２０は図６に示すように連続して配置された複数の単位発光印刷層２２ａを含む細長状の集合体２２からなっていてもよい。複数の単位発光印刷層２２ａを含む集合体２２は外縁２２Ａを形成し、この外線の幅はｗ、その長さはｌとなっている。 Alternatively, the light emitting print layer 20 may be composed of an elongated assembly 22 including a plurality of unit light emitting print layers 22a arranged continuously as shown in FIG. The aggregate 22 including the plurality of unit light emitting print layers 22a forms the outer edge 22A, and the width of the outer line is w and the length thereof is l.
　例えば図７および図８に示すように、発光印刷層２０が帯状体２１から構成される場合、その幅をｗ、その長さをｌ、印刷物１０上に照射されたＵＶ光の円形の照射領域２５Ａの直径をａとした場合、照射領域２５Ａの直径ａは帯状体２１の幅ｗより大きく、帯状体２１の長さｌより小さくなっている。 For example, as shown in FIGS. 7 and 8, when the light emitting print layer 20 is composed of the strip 21, the width is w, the length is l, and the circular irradiation area of the UV light irradiated on the printed material 10. When the diameter of 25 A is a, the diameter a of the irradiation region 25 A is larger than the width w of the strip 21 and smaller than the length 1 of the strip 21.
　すなわち、ｗ≦ａ≦ｌとなっている。 That is, w≦a≦l.
　ここで図７は直線状に形成された帯状体２１を示し、図８は湾曲して形成された帯状体２１を示している。 Here, FIG. 7 shows the strip 21 formed in a straight line, and FIG. 8 shows the strip 21 formed in a curved shape.
　同様に発光印刷層２０が連続して配置された複数の単位発光印刷層２２ａを含む集合体２２からなっている場合も、集合体２２の外縁２２Ａの幅をｗ、その長さをｌとし、かつＵＶ光の円形の照射領域２５ａの直径をａとした場合、
　ｗ≦ａ≦ｌとなっている。 Similarly, when the light emitting print layer 20 is composed of the aggregate 22 including a plurality of unit light emitting print layers 22a arranged continuously, the width of the outer edge 22A of the aggregate 22 is w and the length thereof is l, And when the diameter of the circular irradiation area 25a of UV light is a,
w≦a≦l.
　なお、ＵＶ光の照射領域２５Ａが上述のように円形の場合、直径ａは照射領域２５Ａの最大長さとなる。 If the UV light irradiation area 25A is circular as described above, the diameter a is the maximum length of the irradiation area 25A.
　また、ＵＶ光の照射領域２５Ａが楕円状の場合、その長軸の長さが照射領域２５Ａの最大長さとなる。 Further, when the UV light irradiation area 25A has an elliptical shape, the length of the major axis is the maximum length of the irradiation area 25A.
　この場合、図８に示す湾曲して形成された帯状体２１の代わりに、図９に示すように、図８に示す湾曲した帯状体２１を更に延ばして、リング状をもつ帯状体２１を設けてもよい。図９において、発光印刷層２０がリング状の帯状体２１を有する場合、その幅はｗ、その全長はｌとなり、ＵＶ光の円形の照射領域２５Ａの直径はａとなる。 In this case, instead of the curved strip 21 shown in FIG. 8, as shown in FIG. 9, the curved strip 21 shown in FIG. 8 is further extended to provide a strip 21 having a ring shape. May be. In FIG. 9, when the luminescent printing layer 20 has a ring-shaped strip 21, its width is w, its total length is l, and the diameter of the circular irradiation region 25A of UV light is a.
　次にこのような構成からなる本実施の形態の作用について説明する。 Next, the operation of this embodiment having such a configuration will be described.
　まず上述した印刷物１０を準備し、検査員は印刷物１０に対してＬＥＤ光源２５からＵＶ光を照射する。この場合、ＬＥＤ光源２５から中心波長３６５ｎｍのＵＶ光が印刷物１０に対して照射され、検査員はＬＥＤ光源２５から照射されるＵＶ光を印刷物１０の帯状体２１または細長状の集合体２２からなる発光印刷層２０の長手方向Ｌに沿って移動させる。 First, the printed matter 10 described above is prepared, and the inspector irradiates the printed matter 10 with UV light from the LED light source 25. In this case, the printed matter 10 is irradiated with UV light having a central wavelength of 365 nm from the LED light source 25, and the inspector consists of the strip 21 or the elongated assembly 22 of the UV light emitted from the LED light source 25. The light emitting print layer 20 is moved along the longitudinal direction L.
　上述のように発光印刷層２０は緑色蓄光体からなる発光体Ａと赤色蛍光体からなる発光体Ｂとを含む発光体からなり、ＬＥＤ光源２５からＵＶ光を照射すると、発光体Ａはその飽和時間が０．５ｓ以上、その残光時間が５ｓ以上となっており、発光体Ｂはその飽和時間が０．１ｓ以下、その残光時間が０．１ｓ以下となっているため、ＵＶ光の照射直後、発光印刷層２０は赤色の光を発光し、発光体Ａの飽和時間（０．５ｓ以上）が過ぎると発光印刷層２０は赤色の光と緑色の光を発光して黄色の光が表われる。その後ＵＶ光の照射を停止すると、発光体Ｂの残光時間は０．１ｓ以下のため、緑色の光を発光する（図１および図２参照）。 As described above, the light emitting printing layer 20 is made of a light emitting body including a light emitting body A made of a green phosphor and a light emitting body B made of a red phosphor, and when UV light is emitted from the LED light source 25, the light emitting body A is saturated. The time is 0.5 s or more, the afterglow time is 5 s or more, and the light-emitting body B has a saturation time of 0.1 s or less and an afterglow time of 0.1 s or less. Immediately after irradiation, the light emitting printing layer 20 emits red light, and when the saturation time (0.5 s or more) of the light emitting body A has passed, the light emitting printing layer 20 emits red light and green light and yellow light is emitted. Appears. After that, when the irradiation of UV light is stopped, the afterglow time of the light-emitting body B is 0.1 s or less, and thus green light is emitted (see FIGS. 1 and 2).
　このため検査員が発光印刷層２０の長手方向Ｌに沿ってＬＥＤ光源２５から照射されるＵＶ光を移動させると、照射領域２５Ａの移動方向側の領域から赤色の光が発光され、ＵＶ光の照射領域２５Ａの移動方向側の直後の領域から黄色の光が発光され、移動方向の反対側に存在するＵＶ光がすでに照射されていた現時点でＵＶ光が未照射の領域から緑色の光が発光される。このため発光印刷層２０の長手方向に沿って赤色の光の領域、黄色の光の領域および緑色の光の領域が、ＵＶ光の移動に対応して順次移動していく。 Therefore, when the inspector moves the UV light emitted from the LED light source 25 along the longitudinal direction L of the light emitting print layer 20, red light is emitted from the area on the moving direction side of the irradiation area 25A, and the UV light is emitted. Yellow light is emitted from the area immediately after the moving direction side of the irradiation area 25A, and UV light existing on the opposite side of the moving direction has already been irradiated, and green light is emitted from the area not yet irradiated with UV light. To be done. Therefore, the red light region, the yellow light region, and the green light region are sequentially moved along the longitudinal direction of the light emitting print layer 20 in accordance with the movement of the UV light.
　検査員はこの発光印刷層２０から発光される発光色の色変化を確認する。 The inspector confirms the color change of the luminescent color emitted from the luminescent printing layer 20.
　このとき検査員は発光印刷層２０からの発光色の色変化と、追加印刷層３０に表示された赤色着色部３０ａと、黄色着色部３０ｂと、緑色着色部ｃとを比較することにより、印刷物１０に対する真偽判定を確実に行うことができる。 At this time, the inspector compares the color change of the luminescent color from the luminescent printing layer 20 with the red colored portion 30a, the yellow colored portion 30b, and the green colored portion c displayed on the additional printed layer 30 to obtain a printed matter. It is possible to reliably perform the authenticity determination for 10.
　また、帯状体２１あるいは集合体２２からなる発光印刷層２０の幅をｗ、その長さをｌとし、ＵＶ光の照射領域２５Ａの直径をａとした場合、ｗ≦ａ≦ｌとなっている。このためＬＥＤ光源２５から照射されて形式された照射領域２５Ａを発光印刷層２０の長手方向に沿って移動させる際、ｗ≦ａとなっているので、発光印刷層２０の幅ｗの全長を一度にＵＶ光で照射させることができ、発光印刷層２０の全幅ｗに渡って発光色の色変化を生じさせることができる。 Further, when the width of the light emitting printing layer 20 composed of the strips 21 or the aggregate 22 is w, the length thereof is l, and the diameter of the UV light irradiation region 25A is a, w≦a≦l. .. Therefore, when moving the irradiation area 25A, which is formed by being irradiated from the LED light source 25, along the longitudinal direction of the light emitting print layer 20, since w≦a, the entire length of the width w of the light emitting print layer 20 is once set. Can be irradiated with UV light, and a color change of the luminescent color can be generated over the entire width w of the luminescent printing layer 20.
　またａ≦ｌとなっているため。ＬＥＤ光源２５から照射されて形式された照射領域２５Ａを発光印刷層２０の長手方向Ｌに沿って移動させる際、発光印刷層２０内に照射領域２５Ａと、照射されない領域を確実に形式することができる。そしてこのことにより、発光印刷層２０の長手方向に沿って発光色の色変化を確実に生じさせることができる。 Again, because a≦l. When the irradiation region 25A that is irradiated and formed by the LED light source 25 is moved along the longitudinal direction L of the light emitting print layer 20, it is possible to reliably form the irradiation region 25A and the non-irradiation region in the light emitting print layer 20. it can. Then, by this, it is possible to surely cause the color change of the luminescent color along the longitudinal direction of the luminescent printing layer 20.
　以上のように本実施の形態によれば、印刷物に対して光源から励起光を照射することともに、この励起光の照射領域を印刷物１０上で移動させるだけで、発光印刷層２０から発光される発光色の色変化を確実に視認することができる。 As described above, according to the present embodiment, light is emitted from the light emitting print layer 20 only by irradiating the printed matter with the excitation light from the light source and moving the irradiation area of the excitation light on the printed matter 10. The color change of the emission color can be surely visually recognized.
＜本実施の形態の変形例＞
　次に本実施の形態の変形例について説明する。上記実施の形態において、印刷物１０は合成樹脂製の基材１１と、基材１１上に設けられた一般印刷層１２と、基材１１上に設けられた発光印刷層２０と、発光印刷層２０上に設けられたオーバーコート層１３とを有する例を示したが、これに限らず印刷物１０は紙製の基材１１と、基材１１上に設けられた一般印刷層１２と、基材１１上に設けられた発光印刷層２０とを有していてもよい（図１０参照）。図１０において、発光印刷層２０上にオーバーコート層は設けられておらず、発光印刷層２０は外方へ露出している。 <Modification of this Embodiment>
Next, a modified example of the present embodiment will be described. In the above-described embodiment, the printed matter 10 includes a base material 11 made of a synthetic resin, a general print layer 12 provided on the base material 11, a light emitting print layer 20 provided on the base material 11, and a light emitting print layer 20. Although the example having the overcoat layer 13 provided on the above is shown, the printed matter 10 is not limited to this, the substrate 11 made of paper, the general print layer 12 provided on the substrate 11, and the substrate 11 It may have the light emitting printing layer 20 provided on the upper part (see FIG. 10). In FIG. 10, an overcoat layer is not provided on the light emitting print layer 20, and the light emitting print layer 20 is exposed to the outside.
　上記実施の形態において、基材１１と印刷絵柄１または一般印刷層１２、追加印刷層３０を有する印刷物１０について説明したが、これに限らず、印刷物１０は個人情報を有するものであってもよい。個人情報とは、例えば、国籍、住所、所有者氏名、年齢、性別、個人番号、旅券番号、免許証番号といった、個人しか持ち合わせることができない情報のことである。個人情報は、インキによってオフセット印刷やインクジェット印刷されていてもよく、またはレーザー光により基材または印刷層を穿孔した形態や、レーザー光照射によりレーザー印字が可能なレーザ発色層へ印字した形態で印刷物１０に設けられていてもよい。そして、本開示の発光印刷層２０は、個人情報と一部またはすべて積層されていてもよく、個人情報とは異なる箇所へ設けられていてもよい。特に、レーザ光の穿孔により設けられる個人情報と本開示の発光印刷層２０が積層することによって、偽造することを困難とすることができる。また、黒色のレーザ発色層へ個人情報を印字する場合、発色は白色を示すため、印字した箇所３５に発光印刷層２０を設ける場合、発光色の変化を印字箇所で確認することができ、真偽判定が容易となる。 In the above-mentioned embodiment, the printed matter 10 having the base material 11, the printed pattern 1 or the general printed layer 12, and the additional printed layer 30 has been described, but the printed matter 10 is not limited to this, and may have personal information. .. The personal information is information that only an individual can have, such as nationality, address, owner name, age, sex, personal number, passport number, and license number. Personal information may be offset-printed or inkjet-printed with ink, or printed in a form in which a base material or a printing layer is perforated with laser light, or in a form that is printed on a laser coloring layer capable of laser printing by laser light irradiation. 10 may be provided. The light emitting print layer 20 of the present disclosure may be partly or wholly laminated with the personal information, or may be provided at a location different from the personal information. In particular, forgery can be made difficult by stacking the personal information provided by perforation of laser light and the light emitting print layer 20 of the present disclosure. Further, when personal information is printed on the black laser coloring layer, the color is white, so when the light emitting printing layer 20 is provided at the printed portion 35, the change in the light emitting color can be confirmed at the printed portion. False determination becomes easy.
　上記実施形態において、印刷物１０は、冊子体やカードのセキュリティ用材料として利用することができる。印刷物１０そのものが、パスポート等の冊子体であったり、パスポートのデータページであったり、紙幣であったり、ＩＤ証やチケット、カード（接触または非接触の集積回路（ＩＣ）カード）の層構成に含まれてもよい。これにより、あらかじめ発光特性を知らない人であっても、目視で真偽判定を行うことができる。具体的には、このような個人情報をもつ印刷物１０は、パスポートのような冊子体１０Ａに組み込むことができる（図１１Ａおよび図１１Ｂ参照）。図１１Ａおよび図１１Ｂに示すように、冊子体１０Ａは複数のページ１０ａ、１０ｂ間に挟まれたデータページを有し、このデータページは個人情報をもつ本開示の印刷物１０からなる。そして印刷物１０に対してＬＥＤ光源２５から励起光を照射することにより、発光印刷層２０からの発光の色変化を印字した箇所３５で確認することができる。 In the above embodiment, the printed matter 10 can be used as a material for security of booklets and cards. The printed matter 10 itself is a booklet such as a passport, a passport data page, a bill, an ID certificate, a ticket, and a card (contact or non-contact integrated circuit (IC) card) layered structure. May be included. Thereby, even a person who does not know the light emission characteristics in advance can visually determine the authenticity. Specifically, the printed matter 10 having such personal information can be incorporated in a booklet body 10A such as a passport (see FIGS. 11A and 11B). As shown in FIGS. 11A and 11B, the booklet 10A has a data page sandwiched between a plurality of pages 10a and 10b, and the data page is a printed material 10 of the present disclosure having personal information. By irradiating the printed matter 10 with excitation light from the LED light source 25, the color change of the light emission from the light emitting print layer 20 can be confirmed at the printed portion 35.
１　　　　　印刷絵柄
１０　　　　印刷物
１１　　　　基材
１２　　　　一般印刷層
１３　　　　オーバーコート層
２０　　　　発光印刷層
２１　　　　帯状体
２２　　　　集合体
２２ａ　　　単位発光印刷層
２５　　　　ＬＥＤ光源
２５Ａ　　　照射領域
３０　　　　追加印刷層
３０ａ、３０ｂ、３０ｃ　　　着色部 1 Printed Pattern 10 Printed Material 11 Base Material 12 General Printing Layer 13 Overcoat Layer 20 Light Emitting Printing Layer 21 Strip 22 Aggregate 22a Unit Light Emitting Printing Layer 25 LED Light Source 25A Irradiation Area 30 Additional Printing Layers 30a, 30b, 30c Coloring Part

Claims (10)

  1. 　光源からの励起光が照射される印刷物であって、印刷物に励起光の照射領域が形成される印刷物において、
    　基材と、
    　前記基材上に発光体を用いて設けられた発光印刷層とを備え、
    　前記発光印刷層は、励起光の照射を開始してから発光強度が飽和に達するまでの時間が第１時間となり、かつ前記励起光の照射を停止した後における残光時間が第２時間である発光体Ａと、
    　前記励起光を照射してから発光強度が飽和に達するまでの時間が前記第１時間未満の第３時間となり、かつ前記励起光の照射を停止した後における残光時間が前記第２時間未満の第４時間である発光体Ｂとを有する発光体を備え、
    　前記発光印刷層は帯状体からなるか、または連続して配置された複数の単位発光印刷層を含む細長状の集合体からなり、前記帯状体または前記集合体の幅をｗとし、その長さをｌとし、前記励起光の照射領域の最大長さをａとしたとき、ｗ≦ａ≦ｌとなる印刷物。     In a printed matter irradiated with excitation light from a light source, the printed matter in which the irradiation area of the excitation light is formed in the printed matter,
    Base material,
    A luminescent printed layer provided by using a luminescent material on the substrate,
    In the luminescent printing layer, the time from the start of the irradiation of the excitation light until the emission intensity reaches the saturation is the first time, and the afterglow time after the irradiation of the excitation light is stopped is the second time. Luminous body A,
    The time from the irradiation of the excitation light until the emission intensity reaches saturation is the third time less than the first time, and the afterglow time after the irradiation of the excitation light is stopped is less than the second time. A light emitter having a light emitter B for a fourth time,
    The light emitting printed layer is formed of a strip or an elongated aggregate including a plurality of unit light emitting printed layers continuously arranged, and the width of the strip or the aggregate is w, and the length thereof is Where w is a and the maximum length of the excitation light irradiation region is a, a printed matter satisfying w≦a≦l.
  2. 　前記基材上に前記発光印刷層から分離して追加印刷層を設け、この追加印刷層は前記発光印刷層に対して前記励起光を照射して停止した場合の発光色の色変化に対応する色をもつ複数の着色部分を有する、請求項１記載の印刷物。 An additional printing layer is provided on the substrate separately from the luminescent printing layer, and the additional printing layer corresponds to a color change of the luminescent color when the luminescent printing layer is irradiated with the excitation light and stopped. The printed material according to claim 1, having a plurality of colored portions having colors.
  3. 　前記発光印刷層は着色された複数の着色部をもち、
    　各着色部は前記発光印刷層に対して前記励起光を照射し停止した場合の発光色の色変化に対応する色をもつ、請求項１記載の印刷物。     The light emitting printing layer has a plurality of colored portions,
    The printed matter according to claim 1, wherein each of the colored portions has a color corresponding to a color change of the emission color when the excitation light is applied to the emission print layer and stopped.
  4. 　前記第１時間は０．５ｓ以上であり、前記第２時間は５ｓ以上であり、前記第３時間は０．１ｓ以下であり、前記第４時間は０．１ｓ以下である、請求項１乃至３のいずれか記載の印刷物。 The first time is 0.5 s or more, the second time is 5 s or more, the third time is 0.1 s or less, and the fourth time is 0.1 s or less. The printed matter according to any one of 3 above.
  5. 　前記発光体Ａは緑色を発光し、前記発光体Ｂは赤色を発光する、請求項１乃至４のいずれか記載の印刷物。 The printed matter according to any one of claims 1 to 4, wherein the luminous body A emits green light and the luminous body B emits red light.
  6. 　前記発光印刷層を覆ってオーバーコート層が設けられている請求項１乃至５のいずれか記載の印刷物。 The printed matter according to any one of claims 1 to 5, wherein an overcoat layer is provided so as to cover the light emitting print layer.
  7. 　前記基材上に、顔写真または国籍や住所に関する個人情報が設けられており、前記個人情報を記載する面に前記発光印刷層が設けられている、請求項１乃至６のいずれか記載の印刷物。 7. The printed matter according to claim 1, wherein a face photograph or personal information regarding nationality or address is provided on the base material, and the light emitting print layer is provided on a surface on which the personal information is written. ..
  8. 　請求項１乃至７のいずれか記載の印刷物を備える、冊子体。 A book body provided with the printed matter according to any one of claims 1 to 7.
  9. 　励起光を照射する光源と、
    　前記光源からの励起光が照射される印刷物であって印刷物に励起光の照射領域が形成される印刷物とを備え、
    　前記印刷物は、
    　基材と、
    　前記基材上に発光体を用いて設けられた発光印刷層とを備え、
    　前記発光印刷層は、励起光の照射を開始してから発光強度が飽和に達するまでの時間が第１時間となり、かつ前記励起光の照射を停止した後における残光時間が第２時間である発光体Ａと、
    　前記励起光を照射してから発光強度が飽和に達するまでの時間が前記第１時間未満の第３時間となり、かつ前記励起光の照射を停止した後における残光時間が前記第２時間未満の第４時間である発光体Ｂとを有する発光体を備え、
    　前記発光印刷層は帯状体からなるか、または連続して配置された複数の単位発光印刷層を含む細長状の集合体からなり、前記帯状体または前記集合体の幅をｗとし、その長さをｌとし、前記励起光の照射領域の最大長さをａとしたとき、ｗ≦ａ≦ｌとなる、
    　光源と印刷物との組み合わせ体。     A light source that emits excitation light,
    A printed matter which is irradiated with excitation light from the light source, and a printed matter in which an excitation light irradiation area is formed on the printed matter,
    The printed matter is
    Base material,
    A luminescent printed layer provided by using a luminescent material on the substrate,
    In the luminescent printing layer, the time from the start of the irradiation of the excitation light until the emission intensity reaches the saturation is the first time, and the afterglow time after the irradiation of the excitation light is stopped is the second time. Luminous body A,
    The time from the irradiation of the excitation light until the emission intensity reaches saturation is the third time less than the first time, and the afterglow time after the irradiation of the excitation light is stopped is less than the second time. A light emitter having a light emitter B for a fourth time,
    The light emitting printed layer is formed of a strip or an elongated aggregate including a plurality of unit light emitting printed layers continuously arranged, and the width of the strip or the aggregate is w, and the length thereof is Is set to 1 and the maximum length of the excitation light irradiation region is set to a, then w≦a≦l,
    A combination of a light source and printed matter.
  10. 　請求項９記載の光源と印刷物との組み合わせ体を用いた印刷物の真偽判定方法において、
    　前記印刷物上に前記光源からの励起光を照射する工程と、
    　前記発光印刷層の前記帯状体または前記集合体に沿って前記励起光の照射領域を移動させ、前記発光印刷層から発光される発光色の色変化を視認して印刷物の真偽判定を行う工程と、を備えた、印刷物の真偽判定方法。     A method for determining authenticity of a printed matter using the combination of the light source according to claim 9 and the printed matter,
    Irradiating the printed matter with excitation light from the light source,
    A step of moving the irradiation region of the excitation light along the strip or the aggregate of the light emitting printing layer, visually recognizing a color change of the light emission color emitted from the light emitting printing layer, and making a genuine/counterfeit judgment of the printed matter. And a method for determining authenticity of a printed matter, which comprises:
PCT/JP2019/038849 2018-11-30 2019-10-02 Printed material, booklet body, assembled body of light source and printed material, and authenticity determining method for printed material WO2020110458A1 (en)

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US11738071B2 (en) 2021-07-12 2023-08-29 Penland Foundation Treatment of acute and chronic kidney disease
US11744881B2 (en) 2019-10-18 2023-09-05 Penland Foundation Treatment of amyotrophic lateral sclerosis using botulinum toxin
US11883473B2 (en) 2019-10-18 2024-01-30 Penland Foundation Treatment of dyslexia using botulinum toxin
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