JPH09300517A - Color afterglow composite and color afterglow article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an afterglow composite obtaining high phosphor brightness even if equal in hue as compared with a mixed system of color pigment and a phosphor element and capable of being produced even if usual color ink is used by containing a phosphor element-containing layer and a coloring agent- containing layer. SOLUTION: An afterglow composite is constituted in such a state that a phospor layer and a color layer are separated. Herein, the phosphor layer is a layer substantially consisting of a phosphor element and a binder and the color layer is a layer substantially consisting, of a coloring agent and a binder. By providing the phosphor layer and the color layer, high light emitting brightness is provided even if a hue is same. This afterglow composite is formed by successively forming a phosphor layer and a color layer on a substrate by a printing or coating layer. For example, the phosphor layer is formed by using ink prepared by mixing a phosphor element and a binder-containing medium and the color layer is formed by using ink prepared by mixing the coloring agent with the binder-containing medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a afterglow composite which can have various colors and has high emission brightness even in a deep color such as red, green, black or a metallic color. And an article having this composite.

[0002]

2. Description of the Related Art Some pigments have a property of emitting phosphorescence (afterglow) in a dark place for a relatively long time when irradiated with sunlight or artificial lighting, and can repeat this phenomenon any number of times. This pigment is called a phosphorescent pigment because it absorbs light like charging and discharging of a storage battery and emits light in a dark place.
Further, there is a luminous pigment which mixes radioactive substances such as tritium, ¹⁴⁷ Pm and ²²⁶ Ra into the luminous pigment and stimulates the luminous pigment to emit light by the radiation emitted from these radioactive substances. At present, the applications of these phosphorescent pigments and luminescent pigments are to utilize their afterglow properties to utilize switches, portable electric lights, dark room supplies, handrails, luminescent indicators such as wall markings, guide signs, evacuation tools, and other luminescent safety signs. Such as phosphorescent signs, ashtrays, earrings, table cloths and other ornaments, printed matter,
It covers a wide range of items such as toys and stationery. For example, phosphorescent pigments are disclosed in JP-A-4-51405, evacuation passage lighting phosphorescent wall covering materials, JP-A-11-11075, phosphorescent fibers, JP-A-1-200388, light-emitting rope, JP-A-1. Japanese Patent Laid-Open No. 20038-239 discloses a marker sheet. Further, depending on the application, it may be desired to have afterglow properties and be colored. However, when it is colored with a conventional fluorescent pigment or the like, the phosphorescence brightness is greatly influenced by the color and the density. For example, JIS
According to K 5120 "Luminescent Pigment Explanation, Solution Page 5", "Explanation Table: Decrease in phosphorescent brightness of phosphorescent pigment due to coloring", assuming no coloring is 100%, green (addition amount 3.6%) is 1
5.7%, red-white (addition amount 2.4%) 14.1
% And 5.1% for red color (addition amount 9.1%), and large decrease in color and red color.

[0003]

As a solution to such a problem, for example, JP-A-3-166269 discloses a color phosphorescent pigment and a luminescent pigment in combination with an organic pigment. This color phosphorescent pigment is a mixture of a quinacridone-based organic pigment and a phosphorescent pigment. However, even with these color phosphorescent pigments and luminescent pigments,
Since it was not intended to improve the phosphorescence brightness, the emission brightness was low, and the variation of colors that could be colored was limited. On the other hand, due to the diversification of products and needs, there is a strong demand for an afterglow product having high emission brightness and capable of being colored in various ways. By the way, a phosphorescent phosphor having higher emission brightness than conventional phosphorescent pigments has been developed (Japanese Patent Laid-Open No. 7-11250). However, even if this phosphorescent phosphor is used, the phosphorescence is still greatly reduced by mixing the colored pigment, and the above problems have not been solved yet.

As a solution to the above problems, the present inventors have an afterglow property having a phosphor layer containing a phosphor and a binder and a coloring layer containing a colorant and a phosphor and a binder. We developed a composite and applied for a patent first [Japanese Patent Application No. 8
-40998]. This afterglow composite can obtain higher phosphorescence brightness than a system in which a colored pigment and a phosphor are mixed. However, since the colored layer contains the phosphor, there is the complexity that it is necessary to prepare a colored ink containing the phosphor for each color. There is also a demand for an afterglow which has a higher phosphorescence brightness while being colored.

Therefore, it is an object of the present invention to obtain higher phosphorescence brightness even if the color tone is the same as in a system in which a colored pigment and a phosphor are mixed, and a conventional coloring ink is used as it is. It is to provide an afterglow composite that can be produced even when used, and further to provide an article using the afterglow composite.

[0006]

The present invention is characterized in that it comprises a layer containing a phosphor (hereinafter referred to as a phosphorescent layer) and a layer containing a coloring agent (hereinafter referred to as a colored layer). The present invention relates to an optical complex. Furthermore, the present invention relates to an afterglow article having the above-mentioned afterglow composite on a part or all of the surface thereof.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The most characteristic feature of the afterglow composite of the present invention is that a phosphorescent layer and a colored layer are separated. Here, the “phosphorescent layer” is a layer substantially composed of a phosphor and a binder, and the “colored layer” is a layer substantially composed of a colorant and a binder. Conventional products having afterglow have only consisted of a colored layer containing a colorant and a phosphor, but the afterglow composite of the present invention has the above-described phosphorescent layer and a colored layer. By providing layers, even if the color tone is the same,
It has a high emission brightness.

The "fluorescent phosphor" contained in the phosphor layer is
Any substance that emits phosphorescence and has such properties can be used without limitation. For example, phosphorescent pigments and luminescent pigments are included in the "phosphor". Further, the phosphorescent phosphor disclosed in JP-A-7-11250 is also included in the "phosphor" in the present invention. As the "phosphor", copper activated zinc sulfide (ZnS: Cu) is generally used, but any other inorganic fluorescent pigment or organic fluorescent pigment having phosphorescence can be selected. For example, zinc silicate-based, zinc cadmium sulfide-based, calcium sulfide-based, strontium sulfide-based, calcium tungstate-based, etc., especially phosphorescent pigments with strontium aluminate as a host crystal and a rare earth element as an activator have a luminescent brightness. It is preferable from the viewpoint of high price. On the other hand, a luminescent pigment is one that has a self-luminous property by adding a radioactive substance to a luminescent pigment, for example,
Copper activated zinc sulfide added with radioactive substances such as tritium and promethium 147 ("Revised New Edition Handbook of Pigments", pages 506 to 512, issue date; 1989 March 3).
(Published by Seibundo Shinkosha Co., Ltd., editor; Japan Pigment Technology Association). The “binder” that constitutes the phosphorescent layer of the present invention may be one that can form a layer together with the phosphor, and for example, can contain a resin as a main component. Further, a material having high transparency is preferable from the viewpoint of obtaining high emission luminance. As the resin constituting the binder, for example, acrylic,
Examples thereof include alkyd resins, epoxy resins, urethane resins, acrylic silicone resins, silicone resins, fluorine resins, and melamine resins. However, there is no intention to be limited to these.

The ratio of the phosphor to the binder in the phosphor layer and the layer thickness can be appropriately determined according to the emission brightness required for the desired afterglow composite. As a general trend,
The higher the phosphor content of the phosphor layer and the thicker the phosphor layer, the higher the emission brightness. However, if the phosphor content is too high, it may be difficult to form the phosphor layer or the strength may be reduced. From such a viewpoint, the phosphor content of the phosphor layer is 50% by weight or more,
Preferably 70-95% by weight, more preferably 80-9
A range of 0% by weight is suitable. Further, the thickness of the phosphorescent layer is, for example, in the range of 10 to 500 μm, and practically it is usually in the range of 50 to 200 μm. It should be noted that two or more phosphorescent layers can be laminated for the purpose of increasing the thickness of the phosphorescent layer.

As the "binder" constituting the colored layer, the same ones as described for the phosphorescent layer can be used. As the colorant, those used for ordinary inks and paints can be used as they are. For example, it can be an organic or inorganic dye or pigment. The color tone is not particularly limited. Examples of organic pigments include insoluble azo pigments (for example, brilliant carmine FB, lake red 4R, permanent yellow HR, disazo yellow 10G, fast yellow G, fast yellow 10G, disazo orange), condensed azo pigments, soluble azo pigments (for example, brilliant carmine). 6B, lake red C, watching red), phthalocyanine blue, dyed lake, higher pigments (eg, isoindolinone), quinacridone, dioxazine violet) and the like. As inorganic pigments,
For example, micaceous iron oxide, lead white, red lead, yellow lead, silver vermilion, ultramarine, dark blue, cobalt oxide, titanium dioxide, titanium dioxide coated mica, strontium chromate, titanium yellow, titanium black, zinc chromate, iron black, molybdenum red. , Molybdenum white, litharge, lithopone,
Emerald green, Guinea green, cadmium yellow, cadmium red, cobalt blue and the like can be mentioned. Examples of the dyes include disperse dyes, cationic dyes, basic dyes, acid dyes, direct dyes, optical brighteners, complex dyes, organic solvent-soluble dyes, and pigment resin colors.
Further, the present invention can provide a metallic color afterglow composite. As the metallic color pigment, general metallic powder or bronze powder can be used, but from the viewpoint of obtaining high emission brightness, it is preferable to use a vapor-deposited metallic color pigment having a scaly particle shape. Evaporated metal color pigments are flaky powders obtained by vapor-depositing metal (gold; brass, silver; aluminum) on pieces of plastics (polyethylene terephthalate film, aluminum, etc.) and pulverizing them, and then depositing transparent (yellow) resin. It is protected by layers. As a commercially available product, for example, Oike Industry Co., Ltd., L-G Gold # 325
There is.

The concentration of the colorant in the colored layer and the thickness of the colored layer are appropriately determined in consideration of the color required for the afterglow composite of the present invention. However, it should be taken into consideration that the emission luminance of the afterglow composite tends to decrease as the concentration of the coloring agent and the thickness of the coloring layer increase. Usually, the thickness of the colored layer is 3
It is suitable to be in the range of -100 μm, preferably in the range of 5-50 μm. Further, two or more colored layers can be formed to overlap. By performing such over-coating, even when formed on the same phosphorescent layer, high light emission luminance may be obtained while maintaining the same color tone. Also,
It is also possible to form a colored layer having a desired density by preparing a colored ink having a relatively low density and applying the color ink repeatedly according to the color density.

The colored layer of the afterglow composite of the present invention may be composed of a single color, but may also be composed of two or more parts having different colors, and may be provided with a pattern, a pattern, characters, marks or the like. You can also The afterglow composite of the present invention may have an additional layer on a part or all of the surface of at least one of the phosphorescent layer and the coloring layer. The additional layer can be a substrate layer, which can be substantially transparent to visible light, opaque to visible light, or white. Furthermore, the substrate layer can also have a printed layer on at least one side. If the substrate layer is white or has a white printed layer, the emission brightness can be improved.
Further, the substrate layer can be, for example, a sheet, a film or a card of paper, plastic, cloth, glass, metal, ceramics, leather or the like. The additional layer can also be a protective layer. Suitably, the protective layer is substantially transparent to visible light.

Further, the present invention includes an afterglow article having the above-mentioned afterglow composite on a part or all of the surface thereof. There are no particular restrictions on the type of article. For example, switches, portable electric lights, darkroom supplies, handrails, luminescent markings such as wall markings, guide signs, evacuation equipment, other luminous indicators such as luminous safety signs, ashtrays, earrings, ornaments such as tablecloths, printed matter,
Examples include toys and stationery. Like transfer paper,
In the case where the front and back of the pattern are printed in reverse, the positional relationship between the phosphorescent layer and the colored layer is reversed. The materials to be printed on the transfer paper are various articles such as ceramics, cloth, plastic, metal, glass, enamel and building materials.

The method for producing the afterglow composite and the afterglow article of the present invention will be described below. In the afterglow composite of the present invention, a phosphorescent layer and a coloring layer are sequentially formed on a suitable substrate by a method such as printing or painting which is commonly used for forming a coating film or a coating film. It can be formed by For example, the phosphor layer can be formed using an ink in which a phosphor and a medium containing a binder are mixed. The colored layer can be formed by using an ink in which a colorant and a medium containing a binder are mixed, or an ordinary ink containing a colorant. The composition of the ink can be appropriately determined in consideration of the composition of each layer to be formed and the viscosity of the ink. The medium containing the binder is, for example, a commercially available one, and it is appropriate to use a one-component or two-component type that has good adhesion and weather resistance to the material. The ink for forming a phosphor layer is, for example, 100 to 400 parts by weight of the phosphor, preferably 1
It can be made by mixing 50 to 300 parts by weight. The coloring layer forming ink can be prepared by mixing ink containing a coloring pigment with respect to 100 parts by weight of the medium in the range of 1 to 20% by weight, preferably 1 to 15% by weight.

From the viewpoint of forming a relatively thick phosphorescent layer in order to obtain high emission brightness, screen printing or the like is preferably used. In addition, flat surface printing, curved surface printing, winding printing can be performed depending on the shape of the printing material, and electrostatic screen printing can also be used (“Basic printing technology”, 11
Pages 4 to 118, date of publication; January 30, 1993, publisher; Sangyo Tosho Co., Ltd., editor: Takahiro Tsunoda and 2 others). The screen mesh used for screen printing is not particularly limited, and can be appropriately determined in consideration of the particle size of the phosphor contained in the ink, the viscosity of the ink, and the like. For example, a layer having a thickness of about 10 μm to 100 μm can be formed by screen printing using a screen mesh of 80 mesh to 200 mesh. On the other hand, the method for forming the colored layer includes
There is no particular limitation, and for example, it can be formed by letterpress printing, intaglio printing, plane printing (for example, offset printing), screen printing, coater printing, inkjet printing, brush painting, and the like.

When the afterglow composite does not have a substrate (consisting only of a phosphorescent layer and a colored layer), it is formed after forming the phosphorescent layer and the colored layer on a suitable substrate. It can be obtained by peeling the afterglow composite from the substrate. When the afterglow composite is composed of a substrate layer, a phosphorescent layer and a colored layer, a suitable substrate is used as the above-mentioned substrate, and the phosphorescent layer and the colored layer are successively formed on the substrate, whereby the present invention The afterglow complex of can be obtained. Further, the afterglow composite of the present invention may have a protective layer, and the protective layer may be, for example, a UV-curable resin layer. However, it is not limited to this. Further, the afterglow composite of the present invention may have an adhesive layer.

[0017]

The present invention will be further described with reference to the following examples. Example 1 Phosphorescent layer forming ink phosphorescent pigment (manufactured by Nemoto Special Chemical Co., Ltd., N night light (phosphorescent pigment having strontium aluminate as a base crystal and a rare earth element as an activator), average particle diameter 10 μm) 200 g 100 g of medium (Vinyl Screen Printing INK ACT 780N Seiko Advance Co., Ltd., solid content 30% by weight) and 40 g of cyclohexane (diluent) were sufficiently stirred and mixed to form a phosphorescent layer forming ink. Color layer forming inks (1) to (5) Medium (Vinyl Screen Printing INK ACT 800 Seiko Advance Co., Ltd., solid content 30% by weight) and color ink (Vinyl Screen Printing INK Red: ACT weather resistance 538 Process Red, Seiko Advance Co., Ltd., solid content 53.3
(% By weight) was sufficiently stirred and mixed in the following predetermined formulation to form color layer forming inks (1) to (5).

[0018]

[Table 1]

Formation of Afterglow Composite The above phosphorescent layer-forming ink was screen-printed on YUPO (synthetic paper FPG manufactured by Oji Yuka Co., Ltd., thickness: 250 μm) using a T100 mesh printing mesh to obtain 82 × 54 mm. To form a phosphorescent layer having a thickness of 100 μm, and screen printing was performed again in the same manner to form a phosphorescent layer having a thickness of 180 μm.
Then, the colored layer-forming inks (1) to (5) are applied once or 2 to 3 times on the phosphorescent layer with a T100 mesh printing cloth to form a colored layer having a thickness of 5 to 40 μm. Formed. The brightness and color level of the obtained afterglow composite of the present invention after 1 minute of quenching were measured: the results are shown in Table 2.

Luminance measurement method The sample sufficiently illuminated in a dark place was irradiated with light corresponding to the brightness of the sample surface illuminance of about 5400 lx for 10 minutes with a 27 w fluorescent lamp to accumulate light. One minute after the end of light irradiation for light accumulation, the intensity of phosphorescence (afterglow) of the sample was measured using a luminance meter (LS-100 manufactured by Minolta Camera Co., Ltd.). Further, the intensity (mcd) of phosphorescence per unit amount of the phosphorescent pigment (1 g) contained in the afterglow composite was determined as the luminous efficiency. The color level determination method sample is visually compared with a color sample having a color level of 1 to 8 displayed as follows in a color display method (Munsell color system) by three attributes consisting of hue, lightness and saturation. Observations were made to determine which of the color levels 1-8 the color of the sample corresponded to. Color level Color display method based on three attributes 1 5R 8/6 2 5R 7.5 / 7 3 5R 7/8 4 5R 6.5 / 7 5 5R 6/10 6 5R 5.5 / 11 7 5R 5/12 8 5R 4.5 / 13

Comparative Example 1 Luminescent pigment (manufactured by Nemoto Special Chemical Co., Ltd., N night light (luminous pigment having strontium aluminate as a base crystal and a rare earth element as an activator), average particle diameter 10 μm) 10.0 g and medium (Vinyl Screen Printing INK ACT 780N Seiko Advance Co., Ltd., solid content 30% by weight) 5.05 g
And colored ink (Vinyl Screen Printing INK Red: ACT weather resistance 538 Process Red, manufactured by Seiko Advance Co., Ltd.,
0.06 g (solid content 53.3% by weight) was sufficiently stirred and mixed to form an ink for forming a fluorescent coloring layer. This ink was screen-printed (twice-coated) on YUPO in the same manner as in Example 1 using a T100 mesh printing gauze to form a colored layer having a thickness of 160 μm. The brightness and color level of the obtained printed matter after 1 minute of extinction were measured in the same manner as in Example 1. Table 2 shows the results
Shown in Comparative Example 2 An ink for forming a phosphorescent coloring layer was formed in substantially the same manner as in Comparative Example 1 except that the amount of the coloring ink was 0.25 g, and this ink was printed on the same YUPO as in Example 1 with T100 mesh. Screen printed (twice applied) using gauze, thickness 1
A 40 μm colored layer was formed. Quenching of the obtained printed matter 1
The brightness and the color level after the measurement were measured in the same manner as in Example 1.
Table 2 shows the results. Comparative Example 3 An ink for forming a phosphorescent coloring layer was formed in substantially the same manner as in Comparative Example 1 except that the amount of the coloring ink was 0.40 g, and this ink was printed on the same YUPO as in Example 1 with T100 mesh. Screen printed (twice applied) using gauze, thickness 1
A 50 μm colored layer was formed. Quenching of the obtained printed matter 1
The brightness and the color level after the measurement were measured in the same manner as in Example 1.
Table 2 shows the results.

Reference Example 1 The phosphorescent layer-forming ink of Example 1 was screen-printed (once) with the same YUPO as in Example 1 using a T100 mesh printing cloth to form a phosphorescent layer having a thickness of 100 μm. Formed. Then, the phosphorescent coloring layer-forming ink (1) of Comparative Example 1 was screen-printed (once) using a T100 mesh printing cloth to form a phosphorescent coloring layer having a thickness of 80 μm. The brightness and color level of the obtained printed matter after 1 minute of extinction were measured in the same manner as in Example 1. Table 2 shows the results. Reference Example 2 The phosphorescent layer-forming ink of Example 1 was screen-printed (once applied) on the same YUPO as in Example 1 using a T100 mesh printing cloth to form a phosphorescent layer having a thickness of 100 μm. Then, the phosphorescent coloring layer-forming ink (2) of Comparative Example 2 was screen-printed (once) using a T100 mesh printing cloth to form a 120 μm-thick phosphorescent coloring layer. The brightness and color level of the obtained printed matter after 1 minute of extinction were measured in the same manner as in Example 1. Table 2 shows the results.

[0023]

[Table 2]

From the results shown in Table 2, the afterglow composite of the present invention has the same color tone (color level) as compared with Comparative Examples 1 to 3 which are systems in which a phosphor and a colorant coexist. ), But it shows high afterglow brightness. That is, comparing Comparative Example 1 having a color level of 2 and Example 1-6, the emission luminance is 711 mcd / m ² in Comparative Example 1,
In Example 1-6, it was 882 mcd / m ² . Further, the luminous efficiency showing the luminous brightness per unit amount of the phosphor is 3.41 mcd / g in Comparative Example 1, whereas it is 3.93 mcd / g in Example 1-6. Comparative example 2 in which the color level is 5
When comparing Example 1-3 with Example 1-3, the emission luminance is Comparative Example 2
Is 229 mcd / m ² , whereas in Example 1-3, 4
It is 72 mcd / m ² . Further, the luminous efficiency showing the luminous brightness per unit amount of phosphor is 1.22 mcd / g in Comparative Example 2.
On the other hand, it is 2.08 mcd / g in Example 1-3. Comparing with Comparative Example 3 color level is 7 and Example 1-8, the emission luminance, whereas the Comparative Example 3 is 99mcd / m ^2, in Example 1-8 in 226mcd / m ² is there. Further, the luminous efficiency showing the luminous brightness per unit amount of the phosphor is 0.66 mcd / g in Comparative Example 3, whereas it is 0.93 mcd / g in Example 1-8. From these results, it can be seen that the composite of the present invention can obtain higher emission luminance (emission efficiency) at the same color level. Further, comparing Example 1-2 (emission brightness: 697 mcd / m ² ) and Comparative Example 1 (emission brightness: 711 mcd / m ² ), the emission brightness is almost the same, but the color level of Example 1- It is 3 in 2 whereas it is 2 in Comparative Example 1. This shows that in the present invention, a darker color can be obtained as compared with the case of equivalent emission brightness. In addition, the present invention has an advantage that afterprinting with a desired color can be obtained only by changing the type of the coloring ink according to the color tone.

Also, when the composites of Reference Examples 1 and 2 which are the composites described in Japanese Patent Application No. 8-40998 and the composite of the present invention are compared, Example 1-1 in which the color levels are 1 and 4 is the same. Comparison between Reference Example 1, Example 1-10 and Reference Example 2 reveals that the composite of the present invention is superior in both emission brightness and emission efficiency. In particular, the complex of the present invention exerts its effect more as the color becomes darker. That is, when the color level is 4, the luminous brightness and luminous efficiency of Example 1-10 are 654 mcd / m ² and 2.53 mcd / g, respectively, whereas in Reference Example 2, they are 565 mcd / m ² and 2, respectively. .0
It was 6 mcd / g.

Example 2 Phosphorescent layer forming ink phosphorescent pigment (manufactured by Nemoto Special Chemical Co., Ltd., N night light (phosphorescent pigment with strontium aluminate as a base crystal and a rare earth element as an activator), average particle diameter 10 μm ) 13.2 g and medium (Vinyl Screen Printing INK LOV 800 Seiko Advance Co., Ltd., solid content 30% by weight) 6.6 g and T
3.0 g of 912 (diluent) was sufficiently stirred and mixed to form a phosphorescent layer forming ink. Ink for forming colored layer Medium (Vinyl Screen Printing INK LOV 800, Seiko Advance Co., Ltd., solid content 30% by weight) 1.5 g and coloring ink (ELG R, Gold # 325, Oike Industry Co., Ltd.)
(Manufactured by Mfg. Co., Ltd.) and 0.1 g of T912 (diluent) were sufficiently stirred and mixed to form an ink for forming a colored layer. Formation of Afterglow Complex The above phosphorescent layer forming ink was screen-printed on YUPO (synthetic paper FPG manufactured by Oji Yuka Co., Ltd., thickness 250 μm) using a T100 mesh printing mesh to obtain a thickness of 82 × 54 mm. A phosphor layer having a thickness of 100 μm was formed, and screen printing was performed again in the same manner to form a phosphor layer having a thickness of 180 μm.
Then, the colored layer-forming ink was applied onto the phosphorescent layer with a T100 mesh printing cloth to form a gold colored layer. The obtained afterglow composite of the present invention exhibits a vivid gold color, and the brightness after 1 minute of quenching measured by the same method as in Example 1 is as high as 979 mcd / m ^2. Met.

Claims (18)

[Claims] 1. An afterglow composite comprising a layer containing a phosphor (hereinafter, referred to as a phosphorescent layer) and a layer containing a coloring agent (hereinafter, referred to as a colored layer). 2. The afterglow composite according to claim 1, wherein the coloring layer substantially comprises a coloring agent and a binder. 3. The afterglow composite according to claim 1, wherein the coloring layer comprises one layer or two or more layers. 4. The afterglow composite according to claim 1, wherein the phosphorescent layer consists essentially of a phosphor and a binder. 5. The phosphor content in the phosphor layer is 55%.
The afterglow composite according to claim 1, which is in the range of ~ 95% by weight. 6. The afterglow composite according to claim 1, wherein the coloring agent in the coloring layer is a colored pigment, a metallic pigment or a dye. 7. The phosphor according to claim 1, wherein the phosphor contained in the phosphor layer is a phosphorescent pigment and / or a luminescent pigment.
An afterglow complex according to the item. 8. The afterglow composite according to claim 1, wherein the binder contained in the phosphorescent layer and the colored layer is substantially transparent to visible light. 9. The afterglow composite according to claim 1, wherein the colored layer comprises two or more portions having different colors. 10. The afterglow composite according to claim 1, which further comprises an additional layer on a part or all of the surface of at least one of the phosphorescent layer and the coloring layer. . 11. The afterglow composite according to claim 10, wherein the additional layer is a substrate layer. 12. The afterglow composite according to claim 11, wherein the substrate layer is substantially transparent to visible light, opaque to visible light, or white. 13. The afterglow composite according to claim 12, wherein the substrate layer has a printed layer on at least one surface thereof. 14. The afterglow composite according to claim 10, wherein the additional layer is a protective layer. 15. The afterglow composite according to claim 14, wherein the protective layer is substantially transparent to visible light. 16. The afterglow composite according to claim 10, wherein the additional layer is an adhesive layer. 17. An afterglow article having the afterglow composite according to any one of claims 1 to 16 on a part or all of a surface thereof. 18. The afterglow article according to claim 17, wherein the article is a luminous sign, a guide sign, an evacuation tool, a luminous sign, a decorative article, a printed matter, a toy or a stationery.