JP6686347B2 - Hologram laminate, information recording medium, and method for manufacturing hologram laminate - Google Patents

Description

  The present invention relates to a hologram laminate having a hologram layer, an information recording medium using the hologram laminate, and a method for manufacturing the hologram laminate.

  Forgery is high in information recording media such as cash vouchers such as gift certificates, securities, stock certificates, magnetic cards such as credit cards, prepaid cards, ID cards, IC cards, tickets, banknotes, passports, identification cards, public competition voting tickets, etc. Prevention functions and security functions are required.

  In order to improve these functions, in the above information recording medium, a hologram layer is provided on the surface, and authenticity is identified by using a hologram reproduced image displayed by the hologram layer (for example, Patent Document 1, 2).

Further, in the above information recording medium, a technique of imparting a forgery preventing function by applying information on the surface of the information recording medium by using a metallic luster ink layer having metallic luster is also widely used. The metallic luster ink layer can also impart high designability to the information recording medium.
The metallic luster ink layer usually contains metallic luster particles having an achromatic metallic luster and a binder resin. Further, the metallic luster ink layer can exhibit a desired chromatic metallic luster such as gold and copper by further containing a desired dye.

  However, in recent years, for example, a counterfeit product of the information display medium in which the hologram layer itself or the metallic gloss ink layer itself has been counterfeited has come into circulation, and it is difficult to determine the authenticity and the authenticity of the counterfeit product. There is also. Therefore, higher security is required for the hologram laminate and the information display medium.

JP 2006-1211 A Japanese Patent No. 4335077

  The present invention has been made in view of the above circumstances, and its main object is to provide a hologram laminate having good security, an information recording medium using the same, and a method for manufacturing a hologram laminate.

The inventors of the present invention have conducted earnest research to improve the security of the information recording medium.
Here, the colored metallic luster ink layer containing metallic luster particles having an achromatic metallic luster, a dye and a binder resin is usually formed by being adjusted so as to exhibit a chromatic metallic luster. The present inventors applied a solvent to the surface of the colored metallic luster ink layer formed on the transparent substrate, and the tint of the metallic luster shown on the surface of the colored metallic luster ink layer on the transparent substrate side, It was newly found that the chromatic color changes to an achromatic color and that the solvent-coated surface of the colored metallic luster ink layer exhibits a chromatic metallic luster. That is, the inventors of the present invention obtain a colored metallic gloss layer having different shades of metallic gloss from the surface coated with the solvent and the opposite surface by applying a solvent to the surface of the colored metallic gloss ink layer. We have newly found that The present inventors, who have obtained the above findings, have completed the present invention by applying the colored metallic luster layer to the structure of the hologram laminate.

  That is, the present invention provides a transparent base material, a hologram layer formed on the transparent base material, and metallic luster particles, a dye, and a binder which are formed in a pattern on the transparent base material and have an achromatic metallic luster. With a colored metal gloss layer containing a resin, the formation region of the colored metal gloss layer observed from the transparent substrate side is an achromatic region showing the achromatic metallic luster, and other than the achromatic region And a chromatic region having a chromatic metallic luster, wherein the colored metallic gloss layer forming region observed from the colored metallic luster layer side shows the chromatic metallic luster. And a hologram laminate.

  According to the present invention, since the hologram laminate of the present invention has the colored metallic luster layer, the colored metallic luster layer is different due to the difference in the observation surface between the transparent substrate side and the colored metallic gloss layer side. The presence or absence of an achromatic area in the area where the gloss layer is formed can be indicated. Further, a plurality of pieces of information can be indicated by the colored metallic luster layer and the achromatic region. Therefore, it is possible to perform a high degree of authenticity determination by using various information combined and using the hologram laminate of the present invention. Therefore, the hologram laminate having good security can be obtained.

  In the above invention, it is preferable to further include a resin layer directly formed on the colored metallic luster layer in a region overlapping with the achromatic region in plan view. In the hologram laminate of the present invention, the presence or absence of the resin layer can be indicated by the difference in the observation surface. Further, in the area where the colored metallic luster layer is formed, the achromatic color area and the resin layer can be made to have the same shape and position in plan view, so that the forgery prevention property can be improved.

  In the above invention, it is also preferable that the resin layer is further formed on the transparent substrate on which the colored metallic luster layer is formed. When the hologram laminate of the present invention is observed from the transparent substrate side, it is possible to observe the resin layer formed on the transparent substrate in addition to the formation region of the colored metallic gloss layer, so that more complicated information can be obtained. Can be shown. Therefore, the hologram laminate of the present invention can be used to perform a higher degree of authenticity determination.

  In the above invention, it is preferable that the transparent substrate, the hologram layer, and the colored metallic luster layer have a laminated portion laminated in this order. This is because it is possible to satisfactorily observe the information obtained by combining the hologram reproduction image of the hologram layer and the pattern of the achromatic region in the formation region of the colored metallic gloss layer.

  The present invention contains a transparent base material, a hologram layer formed on the transparent base material, and metallic gloss particles having a metallic luster of an achromatic color formed in a pattern on the transparent base material, a dye and a binder resin. The colored metal gloss layer having a colored metal gloss layer is formed, and the colored metal gloss layer formation region observed from the transparent substrate side is an achromatic region showing the achromatic metal gloss, and a region other than the achromatic region. Characterized by having a chromatic color region exhibiting a chromatic metallic luster, and the formation region of the colored metallic luster layer observed from the colored metallic gloss layer side has a hologram laminate showing a chromatic metallic luster An information recording medium is provided.

  According to the present invention, by having the hologram laminate described above, an information recording medium having good security can be obtained.

  In the above invention, the information recording medium further has a support having a window portion, and the window portion and the formation region of the colored metallic gloss layer of the hologram laminate are arranged so as to overlap in a plan view. Preferably. This is because it is easy to observe the formation region of the colored metallic gloss layer of the hologram laminate from the window. Moreover, it can be applied to various information recording media.

  The present invention provides a hologram layer forming step of forming a hologram layer on a transparent substrate, a metallic metallic particle having an achromatic metallic luster, a colored metallic gloss ink containing a dye and a binder component, on the transparent substrate. A colored metallic luster ink layer forming step of forming a colored metallic luster ink layer containing the metallic luster particles, the dye and the binder resin and exhibiting a chromatic metallic luster by applying in a pattern and solidifying, and the coloring A coating solution containing a solvent is applied in a pattern on the surface of the metallic luster ink layer, and in the formation area of the colored metallic luster ink layer observed from the transparent substrate side, the achromatic metallic luster is exhibited. A coating liquid applying step of forming a colored metallic luster layer by forming a chromatic region that is a region other than the chromatic region and the achromatic region and exhibits the chromatic metallic luster. To provide a method of manufacturing a hologram laminate, characterized by.

  According to the present invention, the colored metal gloss layer can be formed by including the colored metal ink layer forming step and the coating liquid applying step. Therefore, it is possible to manufacture a hologram laminate having good security.

  The hologram laminate of the present invention can show the presence or absence of an achromatic region in the formation region of the colored metal gloss layer due to the difference in the observation surface between the transparent substrate side and the colored metal gloss layer side. Since a plurality of pieces of information can be shown by the achromatic region, the security is improved.

It is a schematic plan view and a schematic cross-sectional view showing an example of the hologram laminate of the present invention. It is the schematic plan view and sectional drawing which show the other example of the hologram laminated body of this invention. It is the schematic plan view and sectional drawing which show the other example of the hologram laminated body of this invention. It is a schematic sectional drawing which shows the other example of the hologram laminated body of this invention. It is a schematic sectional drawing which shows the other example of the hologram laminated body of this invention. It is the schematic plan view and sectional drawing which show the other example of the hologram laminated body of this invention. FIG. 1 is a schematic plan view and a sectional view showing an example of an information recording medium of the present invention. FIG. 4 is a process chart showing an example of a method for manufacturing a hologram laminate of the present invention. It is process drawing which shows the other example of the manufacturing method of the hologram laminated body of this invention. 3 is a photograph of an observation surface on the transparent substrate side and an observation surface on the coated surface side of the colored metallic luster layer evaluation substrate of Experimental Example 1. 5 is a photograph of an observation surface on the transparent substrate side and an observation surface on the coated surface side of the colored metallic luster layer evaluation substrate of Experimental Example 2.

  Hereinafter, the hologram laminate of the present invention, an information recording medium using the same, and a method for manufacturing the hologram laminate will be described.

A. Hologram Laminated Body The hologram laminated body of the present invention comprises a transparent substrate, a hologram layer formed on the transparent substrate, and a metallic gloss having an achromatic metallic luster formed in a pattern on the transparent substrate. Particles, having a colored metal gloss layer containing a dye and a binder resin, the formation region of the colored metal gloss layer observed from the transparent substrate side, an achromatic region showing the achromatic metal gloss, and A region other than the achromatic region having a chromatic color region showing a chromatic metallic luster, the formation region of the colored metallic luster layer observed from the colored metallic luster layer side is the chromatic metallic luster It is characterized by showing.

In the present specification, the area where the colored metallic gloss layer is formed refers to an area where the colored metallic gloss layer is formed in plan view. Moreover, in the following description, the formation area of the colored metallic gloss layer may be referred to as a metallic gloss area.
Further, the achromatic metallic luster and the chromatic metallic luster may be referred to as a metallic luster shade. Details of the tint of the metallic luster will be described later.

The hologram laminate of the present invention will be described with reference to the drawings.
1A to 1C are a schematic plan view and a schematic sectional view showing an example of the hologram laminate of the present invention. Further, FIG. 1C is a cross-sectional view taken along the line AA of FIGS. 1A and 1B, and FIG. 1A is a view observed from the B direction in FIG. FIG. 1B is a view observed from the C direction in FIG.
The hologram laminate 1 shown in FIGS. 1A to 1C has a transparent base material 2, a hologram layer 3 formed on the transparent base material 2, and a pattern formed on the transparent base material 2. And a colored metallic luster layer 4 containing a metallic luster particle having a colored metallic luster, a dye and a binder resin. Further, in the hologram laminate 1, the formation area a (metal glossy area a) of the colored metal glossy layer 4 observed from the transparent base material 2 side is an achromatic color area b showing an achromatic metal gloss and an achromatic color area. It is characterized in that it has a chromatic color area c which is an area other than the area b and exhibits a chromatic metal gloss, and the metal gloss area a observed from the colored metal gloss layer 4 side shows a chromatic metal gloss. . For example, the achromatic metallic luster can be silver (silver) and the chromatic metallic luster can be gold (gold color). FIGS. 1A to 1C show an example in which the pattern of the colored metallic gloss layer 4 has a square shape and a pattern in which the character shape of'DNP 'is removed. In addition, in FIGS. 1A and 1C, the metallic luster area a observed from the transparent substrate 2 side has three rectangular patterns, and the achromatic area b has a rectangular shape including'N '. The chromatic color region c has a rectangular pattern including'D 'or'P'.
FIGS. 1A to 1C show an example in which the hologram laminate 1 has a laminate portion d in which a transparent substrate 2, a hologram layer 3, and a colored metallic luster layer 4 are laminated in this order.

  When the hologram laminate 1 shown in FIGS. 1A to 1C is observed from the transparent substrate 2 side, a hologram reproduced image by the hologram layer 3 and a metallic gloss region a through the hologram layer 3 are observed. It In the metallic luster area a, an achromatic area b and a chromatic area c are observed. On the other hand, when the hologram laminate 1 is observed from the colored metallic luster layer 4 side, chromatic metallic luster is observed in the metallic luster area a. Therefore, the hologram laminate 1 shown in FIG. The presence / absence of a hologram reproduced image and the presence / absence of an achromatic region b in the metallic luster region a are identified from.

2A to 2C are a schematic plan view and a schematic sectional view showing another example of the hologram laminate of the present invention. 2C is a sectional view taken along the line AA of FIGS. 2A and 2B, and FIG. 2A is a view observed from the direction B in FIG. 2C. 2B is a view observed from the C direction in FIG.
The hologram laminate 1 shown in FIGS. 2A to 2C further includes a resin layer 5 directly formed on the colored metallic gloss layer 4 in a region overlapping with the achromatic region b in plan view. . 2B and 2C show an example in which the resin layer 5 is the colored resin layer 51. In addition, FIGS. 2A to 2C show an example in which the hologram layer 3 and the colored metallic luster layer 4 are formed on the same plane on the transparent substrate 2 and do not have the above-mentioned laminated portion. .
2A to 2C, the pattern of the colored metallic luster layer 4 has a square pattern, and the patterns of the achromatic region b and the colored resin layer 51 in the metallic luster region a are'DNP '. An example is shown in which a character-shaped pattern is provided and the chromatic region c has a background pattern.
When the hologram laminate 1 shown in FIGS. 2A to 2C is observed from the transparent substrate 2 side, as shown in FIG. 2A, in the metallic luster area a, an achromatic color area b and a chromatic color area are provided. Region c is observed. On the other hand, when the hologram laminate 1 is observed from the colored metallic luster layer 4 side, as shown in FIG. 2B, the metallic luster area a is observed so as to exhibit a chromatic metallic luster, and further the achromatic area is observed. The colored resin layer 51 is observed in a region overlapping with b in a plan view. Therefore, the hologram laminate 1 shown in FIGS. 2A to 2C is different from the observer due to the difference in the observation surface when observed from the transparent substrate 2 side and when observed from the colored metal glossy layer 4 side. From the above, the presence or absence of the achromatic region b and the presence or absence of the colored resin layer 51 in the metallic luster region a are identified.

FIGS. 3A to 3C are a schematic plan view and a schematic sectional view showing another example of the hologram laminate of the present invention. 3C is a cross-sectional view taken along the line AA of FIGS. 3A and 3B, and FIG. 3A is a view observed from the direction B in FIG. 3C. 3B is a view observed from the direction C in FIG.
The hologram laminate 1 shown in FIGS. 3A to 3C has a colored resin layer 51 formed directly on the colored metallic luster layer 4 in a region overlapping the achromatic region b in plan view. Further, an example is shown in which the colored resin layer 51 is formed also on the transparent substrate 2 on which the colored metallic luster layer 4 is formed. The patterns of the colored metallic luster layer 4, the achromatic region b and the chromatic region c in the metallic luster region a are the same as the patterns described in FIGS. 1 (a) to 1 (c) described above. Further, the colored resin layer 51 is directly formed on the colored metallic gloss layer 4 in the area overlapping the achromatic area in a plan view, and further, the portion of the colored metallic gloss layer 4 in which the letter shape of “N” is removed. Is also formed on the transparent substrate 2. That is, the pattern of the colored resin layer 51 has a solid rectangular pattern that overlaps the achromatic region in plan view.
When the hologram laminate 1 shown in FIGS. 3A to 3C is observed from the transparent base material 2 side, as shown in FIG. 3A, in the metallic luster area a, the reproduced image of the hologram layer and the hologram. The achromatic region b, the chromatic region c, and the'N 'pattern of the colored resin layer 51 are observed through the layers. On the other hand, as shown in FIG. 3B, when the hologram laminate 1 is observed from the colored metallic luster layer 4 side, the metallic luster area a is observed so as to exhibit a chromatic metallic luster, and further the achromatic area is observed. A rectangular pattern of the colored resin layer 51 is observed in a region overlapping with b in a plan view. Therefore, the hologram laminate 1 shown in FIGS. 3A to 3C is different from the observer due to the difference in observation surface between the transparent substrate 2 side and the colored metal gloss layer 4 side. From the above, the presence or absence of a hologram reproduced image, the presence or absence of an achromatic region b, and the change in the pattern of the colored resin layer 51 in the metallic luster region a are identified.

  According to the present invention, since the hologram laminate of the present invention has the colored metallic luster layer, the colored metallic luster layer is different due to the difference in the observation surface between the transparent substrate side and the colored metallic gloss layer side. The presence or absence of an achromatic area in the area where the gloss layer is formed can be indicated. Further, a plurality of pieces of information can be indicated by the colored metallic luster layer and the achromatic region. Therefore, it is possible to perform a high degree of authenticity determination by using various information combined and using the hologram laminate of the present invention. Therefore, the hologram laminate having good security can be obtained.

  As described above, the colored metallic luster ink layer containing the metallic luster particles having an achromatic metallic luster, the dye, and the binder resin is usually formed by being adjusted so as to exhibit a chromatic metallic luster. . The present inventors applied a solvent to the surface of the colored metallic luster ink layer formed on the transparent substrate, and the tint of the metallic luster shown on the surface of the colored metallic luster ink layer on the transparent substrate side, It was newly found that the chromatic color changes to an achromatic color and that the solvent-coated surface of the colored metallic luster ink layer exhibits a chromatic metallic luster. That is, the inventors of the present invention obtain a colored metallic gloss layer having different shades of metallic gloss from the surface coated with the solvent and the opposite surface by applying a solvent to the surface of the colored metallic gloss ink layer. We have newly found that

The reason for this is presumed as follows.
That is, it is assumed that the solvent applied to the surface of the colored metallic luster ink layer causes the binder resin in the colored metallic luster ink layer to dissolve, and the dye dissolved in the binder resin also to dissolve in the solvent. . Further, it is estimated that the solvent penetrates to the transparent base material side in the colored metallic luster ink layer as the binder resin dissolves in the solvent. Further, it is estimated that the solvent that penetrates into the colored metallic luster ink layer evaporates again from the surface of the colored metallic luster ink layer. At this time, the dye dissolved in the solvent that evaporates moves from the transparent base material side of the colored metallic luster ink layer to the surface side, resulting in a difference in dye concentration in the thickness direction of the layer, resulting in an achromatic color on the transparent base material side. It is presumed that a metallic luster of is observed.

  The present invention was found for the first time that the above-mentioned phenomenon occurs in a colored metallic gloss ink layer, and obtained by applying a coating solution containing a solvent in a pattern on the surface of the colored metallic gloss ink layer using the above phenomenon. This is characterized in that a colored metallic gloss layer having an achromatic region is applied to the hologram laminate. The details of the method for producing such a hologram laminate will be described in the section "C. Method for producing hologram laminate" described later.

As a method of allowing an observer to observe the presence or absence of an achromatic region due to the difference in the observation surface of the hologram laminate, for example, a chromatic colored metallic gloss ink layer formed on a transparent substrate or the above transparent substrate is used. A method is conceivable in which a metallic luster ink layer showing an achromatic metallic luster is formed on the surface opposite to the surface on which the colored metallic luster ink layer is formed. However, in this case, in the portion where the colored metallic gloss ink layer and the metallic gloss ink layer overlap with each other, the surface irregularities of the hologram laminate become large, and thus the workability of the hologram laminate may be deteriorated.
On the other hand, in the hologram laminate of the present invention, since the achromatic region can be observed by using one colored metallic gloss layer, the surface irregularities of the hologram laminate can be made small. The workability of the hologram laminate can be improved.
Hereinafter, each configuration of the hologram laminate of the present invention will be described.

1. Colored metallic luster layer The colored metallic luster layer in the present invention is formed in a pattern on a transparent substrate and contains metallic luster particles having an achromatic metallic luster, a dye and a binder resin. Further, the colored metallic gloss layer has a colored metallic gloss layer formation region observed from the transparent substrate side, which is an achromatic region showing an achromatic metallic luster, and a region other than the achromatic region which is a chromatic metal. It is characterized in that it has a chromatic color region showing gloss, and the formation region of the colored metal gloss layer observed from the colored metal gloss layer side shows a chromatic metal gloss. The formation area of the colored metallic gloss layer observed from the colored metallic gloss layer side usually shows a chromatic metallic gloss.

(1) Tint of metallic luster In the present specification, metallic luster refers to exhibiting the reflection characteristics observed on the surface of a general metal.
The achromatic metallic luster means metallic luster and white color. The white color includes not only white but also white with a tint.
The chromatic metallic luster means metallic luster and color. The chromatic metallic luster means metallic luster other than the achromatic metallic luster described above.

The fact that the colored metallic luster layer exhibits metallic luster, achromatic metallic luster and chromatic metallic luster is, for example, L ^* a ^* b ^* L ^* in the color system measured by the SCI method ^. It is possible to specify the value, the a ^* value, and the b ^* value.
Specifically, it is specified by measuring the spectral reflection characteristic using a spectrocolorimeter and obtaining the L ^* value, a ^* value, and b ^* value in the L ^* a ^* b ^* color system from the spectral reflection characteristic. be able to.
Here, the SCI (Specular Components Include) method is a method of detecting the total of specular reflection light and diffuse reflection light, that is, measuring including specular reflection light. The SCI method is widely used when measuring an object color.
As the spectrocolorimeter, for example, CM-2500d (D65 light source) manufactured by Konica Minolta Co., Ltd. can be used.

Metallic luster in the colored metallic luster layer can be defined using the L ^* value in the L ^* a ^* b ^* color system. The L ^* value is not particularly limited as long as it can exhibit a desired metallic luster, but is preferably 35 or more, particularly 50 or more, and particularly 60 or more.

The tint of the metallic luster in the colored metallic luster layer can be defined using the a ^* value and the b ^* value. The achromatic region in the metallic luster region observed from the transparent substrate side shows an achromatic metallic luster and shows a white color. In this case, the a ^* value in the L ^* a ^* b ^* color system is not particularly limited as long as it can exhibit a desired achromatic metallic luster, but is, for example, in the range of 0 to 20, and particularly 0 to It is preferably within the range of 10.
Further, in this case, the b ^* value in the L ^* a ^* b ^* color system is not particularly limited as long as it can exhibit a desired achromatic metallic luster, but is, for example, in the range of 0 to 20, It is preferably in the range of 0-10.

On the other hand, the chromatic color region of the colored metal gloss layer observed from the transparent substrate side and the metal gloss region observed from the colored metal gloss layer side show chromatic metal gloss. In this case, the a ^* value and the b ^* value in the L ^* a ^* b ^* color system are smaller or larger than the above numerical range.
When the colored metallic luster layer exhibits chromatic metallic luster, the absolute value of the difference Δa ^* value between the a ^* value and the achromatic metallic luster described above is preferably 5 or more, and more preferably within the range of 5 to 15. .
When the colored metallic luster layer exhibits a chromatic metallic luster, it is preferable that the absolute value of the difference Δb ^* value between the achromatic metallic luster and the above-mentioned ab ^* value is 20 or more, and particularly 20 to 40. .
This is because if the absolute value of the Δa ^* value and the absolute value of the Δb ^* value are small, it may be difficult to visually determine the difference in the tint of the metallic luster of the colored metallic luster layer due to the difference in the observation surface.

(2) Material for Colored Metal Luster Layer The colored metal gloss layer in the present invention contains metal gloss particles, a dye and a binder resin.

(A) Metallic luster particles Metallic luster particles are particles having an achromatic metallic luster.
The metallic luster particles having an achromatic metallic luster means that the metallic luster particles have the achromatic metallic luster described above.

As the material of the metallic luster particles, the material itself may exhibit an achromatic metallic luster, or the material having an achromatic metallic luster may be formed on the surface.
Examples of the material of the metallic luster particles include aluminum. The material of the metallic luster particles may be a powder material such as aluminum powder or a paste material such as aluminum paste. Aluminum easily adjusts the tint of the metallic luster of the colored metallic luster layer.

  The particle shape of the metallic luster particles is not particularly limited as long as it can be dispersed in the colored metallic luster layer, and examples thereof include a spherical shape, an elliptical shape, an amorphous shape, a rectangular parallelepiped shape, and a cubic shape.

The average particle size of the metallic luster particles is not particularly limited as long as it can be dispersed in the colored metallic luster layer and can exhibit a desired metallic luster, but is, for example, in the range of 5 μm to 50 μm, and particularly in the range of 10 μm to 20 μm. It is preferably within.
If the average particle size of the metallic luster particles is too small, it may be difficult to uniformly disperse the metallic luster particles in the binder resin. Further, if the average particle size of the metallic luster particles is too large, the metallic luster of the colored metallic luster layer may be uneven.
The average particle size of the metallic luster particles means the average when each metallic luster particle is a monodisperse type metallic luster particle, that is, when the metallic luster particles have a single shape, a broad particle size distribution is obtained. In the case of irregularly shaped metallic luster particles, it means the particle diameter of the most metallic luster particles present in the particle size distribution measurement. The particle diameter of the metallic luster particles having a shape other than the spherical shape is a value indicated by the diameter of the circumscribing sphere. The average particle size of the metallic luster particles can be measured mainly by the Coulter counter method. In addition to this method, measurement can also be performed by a laser diffraction method or measurement by SEM photography. Further, in the present invention, for example, the particle diameters of 10 metallic luster particles can be measured by SEM photography, and the average thereof can be calculated and obtained. The average particle size of the metallic luster particles can also be measured by the Coulter counter method or the laser diffraction method.

  The content of the metallic luster particles in the colored metallic luster layer is not particularly limited as long as it can impart a desired metallic luster to the colored metallic luster layer, but is, for example, in the range of 10% by mass to 40% by mass, and particularly 20%. It is preferably in the range of 40% by mass to 40% by mass. This is because if the content of the metallic luster particles in the colored metallic luster layer is low, it may be difficult to exhibit the desired metallic luster, and the content of the metallic luster particles in the colored metallic luster layer is too large. When the content of the binder resin is relatively small, it may be difficult to impart sufficient strength to the colored metallic luster layer. This is because it may be difficult to achieve sufficient adhesion. This is because it is difficult to form the colored metallic luster layer itself.

(B) Dye The dye is used for imparting a desired shade to the colored metallic luster layer.
By containing the dye, a desired chromatic metallic luster can be exhibited in the chromatic color region on the transparent substrate side and the metallic luster region on the colored metal gloss layer side.

The color of the dye is not particularly limited as long as it can impart a desired chromatic color to the colored metallic gloss layer, and for example, it is possible to use dyes of various colors such as yellow, red, orange, green, blue, and purple. You can For example, when a yellow dye is added to the colored metallic luster layer, gold color can be imparted as the chromatic metallic luster of the colored metallic luster layer.
When a red dye and a yellow dye are added to the colored metallic gloss layer, copper color can be exhibited as the chromatic metallic luster of the colored metallic gloss layer.

  The specific dye can be appropriately selected according to the use of the colored metallic luster layer, and is not particularly limited, and examples thereof include metal complex salt dyes such as chromium complex salt dyes and copper complex salt dyes.

The content of the dye in the colored metallic luster layer is not particularly limited as long as it can impart a desired chromatic metallic luster to the colored metallic luster layer, for example, within a range of 0.1% by mass to 20% by mass,
Above all, it is preferably in the range of 0.1% by mass to 5% by mass.
This is because if the content of the dye is too small, it may be difficult for the colored metallic luster layer to exhibit the desired chromatic metallic luster, and if the content of the dye is too large, a colored metallic luster layer is formed. This is because that may be difficult.

(C) Binder Resin The binder resin in the present invention disperses the metallic luster particles described above and dissolves the dye described above.
The binder resin preferably has a desired light-transmitting property, and can be selected from ionizing radiation curable resins, thermoplastic resins, thermosetting resins and the like.
As the binder resin, for example, a resin containing a vinyl chloride-vinyl acetate copolymer can be preferably used.

  The content of the binder resin contained in the colored metallic gloss layer is not particularly limited as long as the colored metallic gloss layer can be formed, but is, for example, in the range of 20% by mass to 80% by mass, and particularly 40% by mass to 80% by mass. It is preferably in the range of mass%, and particularly preferably in the range of 60 mass% to 80 mass%. This is because if the content of the binder resin is too small, it may be difficult to form the colored metallic gloss layer, and if the content of the binder resin is too large, the content of the metallic gloss particles and the dye is relatively high. This is because there is a possibility that it will be difficult to obtain a colored metallic luster layer exhibiting a desired tint of metallic luster, since the amount is relatively small.

(D) Other materials The colored metallic luster layer in the present invention is not particularly limited as long as it contains metallic luster particles, a dye and a binder resin, and a necessary constitution can be appropriately selected and added. Examples of such a material include a surfactant and the like.

(3) Colored metallic luster layer The colored metallic luster layer in the present invention has only to be formed on a transparent base material, and as shown in FIG. 4 may be formed, and as shown in FIG. 1C, the colored metallic luster layer 4 may be formed on the transparent substrate 2 via another layer. When the colored metallic luster layer 4 is formed on the transparent substrate 2 via another layer, the colored metallic luster layer 4 is formed on the hologram layer 3 as shown in FIG. Is preferred. This is because information obtained by combining the hologram reproduction image of the hologram layer and at least one of the colored metallic gloss layer and the achromatic area in the metallic gloss area can be observed.

  The colored metallic gloss layer is usually used for displaying information. The information includes, for example, character information in which a plurality of selected characters, numerical values, and symbols are listed in a regular or irregular order, face information of the owner, barcode, QR code (registered trademark) information, and the like. Is mentioned. Specific examples of the character information include personal ID, serial number, lot number, manufacturing date, product name, personal information such as name and address, and the like.

  When the colored metallic luster layer displays information, for example, the pattern of the colored metallic luster layer 4 may have the above-mentioned information as shown in FIGS. 1 (a) to 1 (c). (A) to (c) The pattern of the achromatic color area b and the chromatic color area c of the metallic luster area a in the colored metallic luster layer 4 may have the above-mentioned information. Further, the pattern of the colored metallic luster layer and the pattern of the achromatic color region and the chromatic color region may have the above-mentioned information.

  The pattern of the colored metallic gloss layer can be appropriately selected according to the application of the hologram laminate of the present invention, and is not particularly limited, and examples thereof include lines, dots, letters, numbers, figures, symbols, pictures, and these. The background and the like. Further, as shown in FIGS. 2A to 2C, the colored metallic luster layer 4 has a desired plan view outer shape at a desired position on the transparent substrate 2, and the entire surface within the above plan view outer shape. It may be formed so as to cover. When the pattern of the colored metallic luster layer is the background, the colored metallic luster layer is formed over the entire area in a state where the pattern such as a figure is removed on the transparent substrate.

The achromatic region and the chromatic region in the formation region of the colored metallic luster layer are usually provided in a pattern.
Further, the pattern of the achromatic color region and the chromatic color region in the formation region of the colored metallic gloss layer can be appropriately selected according to the above-mentioned information. Further, in the present invention, for example, as shown in FIG. 2A, the achromatic color area b may have information such as character information and the chromatic color area c may be used as the background. The area may have information such as character information and the achromatic area may be used as the background.

  The thickness of the colored metallic gloss layer is not particularly limited as long as it can be formed on the transparent substrate, and can be appropriately selected according to the application of the hologram laminate. The thickness of the colored metallic gloss layer is, for example, preferably in the range of 0.1 μm to 5 μm, and more preferably in the range of 0.1 μm to 2 μm. If the thickness of the colored metallic gloss layer is too thin, it may be difficult to form the colored metallic gloss layer, or the tint of the metallic gloss may be sufficiently different on the transparent substrate side and the surface side of the colored metallic gloss layer. This can be difficult to do. On the other hand, if the thickness of the colored metallic luster layer is too thick, the processability of the hologram laminate may decrease.

  As a method for forming a colored metallic glossy layer, a colored metallic glossy ink containing the above-mentioned metallic glossy particles, a dye, a binder component and a solvent is applied in a pattern on a transparent substrate and dried to form a colored metallic glossy ink layer. After the formation, a colored metal gloss layer can be formed by applying a coating solution containing a solvent in a pattern. The details of the method of forming the colored metallic gloss layer will be described in the section “C. Method of manufacturing hologram laminate” described later, and thus the description thereof is omitted here.

2. Hologram Layer The hologram layer in the present invention is formed on a transparent base material.

The hologram layer may be of any type in which interference fringes are recorded, and may be of a reflective type or a transmissive type. When the hologram layer is formed so as to overlap with the formation region of the colored metallic luster layer, a transmissive type is usually used.
Further, in the present invention, various hologram layers can be used according to the recording pattern of interference fringes. Specifically, a relief type hologram layer, a volume type hologram layer, etc. are mentioned.

(1) Volume hologram layer The volume hologram layer is not particularly limited as long as it is a layer made of a material used for a general volume hologram layer, and examples thereof include a cured resin layer, a thermoplastic resin layer, and a photosensitive layer. To be
Examples of materials used for the volume hologram layer include thermosetting resins, ionizing radiation curable resins, thermoplastic resin layers, silver salt materials, dichromate gelatin emulsions, photopolymerizable resins, photocrosslinkable resins, and photopolymerizable resins. Known materials such as a photosensitive material such as a resist, a photorefractive material made of an inorganic material, a photosensitive material such as a photochromic material, and the like can be mentioned. Among them, a binder resin, a photopolymerizable compound, a photosensitive material containing a photopolymerization initiator and a sensitizing dye, and a cationically polymerizable compound, a radically polymerizable compound, a photoradical polymerization initiator and a photocationic polymerization initiator. A photosensitive material can be preferably used. The specific material of the composition contained in the above-mentioned light-sensitive material can be the same as the material described in JP 2013-068960 A, for example.
The volume hologram layer may contain, in addition to the above-mentioned materials, generally any material that can be added to the volume hologram layer.

(2) Relief-type hologram layer As the relief-type hologram layer, a relief-type hologram layer having a concavo-convex structure (relief structure) corresponding to interference fringes on its surface may be used, and known ones can be used.

Examples of the relief type hologram layer include a cured resin layer obtained by curing a thermosetting resin, an ionizing radiation curable resin, etc., a thermoplastic resin layer, a silver salt material, a dichromate gelatin emulsion, a thermoplastic, a diazo-based photosensitive material. , A photoresist, a ferroelectric, a photochromic material, a thermochromic material, and a photosensitive layer made of a photosensitive material such as chalcogen glass.
The details of the thermosetting resin, the ionizing radiation curable resin, and the thermoplastic resin, which are the materials for the cured resin layer, are the same as the resin material for the hologram layer described in, for example, JP-A-2014-126799. can do.
The relief-type hologram layer may include, in addition to the above-mentioned materials, generally any material that can be added to the relief-type hologram layer.

  The shape and the like of the relief structure may be any shape as long as a desired hologram reproduction image can be expressed, and can be appropriately determined in the same manner as the relief structure of a general relief type hologram layer.

The relief type hologram layer is usually provided with a reflection layer on the surface on which the relief structure is formed. This is because the relief structure and the reflective layer have a peculiar optical design property due to the effects. The reflective layer may be formed of the colored metallic luster layer described above, or the reflective layer described in the section “4. Other configurations” described later may be used.
Further, the relief hologram layer is arranged such that the surface side facing the surface on which the relief structure is formed is the light source side.

(3) Others The hologram reproduced image displayed by the hologram layer is not particularly limited, and can be appropriately designed depending on the interval, angle, etc. of the recorded interference fringes. For example, information such as characters, figures, and patterns can be given.
Further, the reproduced hologram image does not have to display specific information, and may be a display in which the brightness of diffracted light is uniform over the entire surface of the hologram layer.

  In the present invention, the reproduced hologram image displayed on the hologram layer may have uniform diffracted light intensity. The hologram layer that displays a hologram reproduction image in which the diffracted light has a uniform luminance refers to a hologram layer in which interference fringes at equal intervals are recorded.

The hologram layer may be transparent, semi-transparent or opaque. When laminated with a colored metallic luster layer, the hologram layer is usually transparent.
When the hologram layer is a transmissive type, the hologram layer has transparency. On the other hand, when the hologram layer is a reflection type, the transparency of the hologram layer does not matter. For example, in the case of a reflection type relief hologram layer, an opaque aluminum vapor deposition layer that is usually formed following the relief surface of the hologram layer to modulate the refractive index, or a vapor deposition of transparent titanium oxide, zinc sulfide, or the like. Since the layer functions as a reflection layer, the transparency of the reflection type relief hologram layer can be appropriately selected. Further, a volume hologram is transparent because it usually has no reflective layer, but it may be opaque.

  The hologram layer may be formed on the entire surface of one surface of the transparent substrate or may be formed on a part thereof. Further, the hologram layer may be formed in a pattern at a desired position on one surface of the transparent substrate, and has a desired plan view outer shape at a desired position on one surface of the transparent substrate. It may be formed so as to cover the entire surface within the outer shape in plan view.

Further, as shown in FIGS. 1C, 3C, 4 and 5, in the hologram layer 3, the formation region d of the hologram 3 layer overlaps with the formation region a of the colored metallic gloss layer 4 in a plan view. It may be formed in such a manner that it does not overlap in a plan view as shown in FIG. Among them, in the present invention, it is preferable that the hologram layer formation region is formed so as to overlap with the colored metal glossy layer formation region in plan view. This is because information that combines the hologram reproduced image of the hologram layer and the pattern of the achromatic region of the colored metallic gloss layer can be displayed, and a high level of authenticity determination can be performed using the hologram laminate of the present invention. . 1C, FIG. 3C, and FIG. 5, an example in which the colored metal glossy layer formation region a overlaps the hologram layer formation region e in plan view is shown. In FIG. An example is shown in which a part of the gloss layer formation region a overlaps the hologram layer formation region e in plan view.
Further, when the formation area of the hologram layer and the formation area of the colored metallic gloss layer overlap in a plan view, it is particularly preferable that the formation area of the hologram layer and the achromatic area overlap in a plan view.
This is because a high level of authenticity determination can be performed using the hologram laminate of the present invention.

  4 and 5 are schematic cross-sectional views showing other examples of the hologram laminate of the present invention. In FIG. 4, a hologram layer is formed in a pattern on a transparent base material. An example in which a colored metallic luster layer is formed on the top and the hologram layer is shown. FIG. 5 shows an example in which the hologram layer 3 is formed on the surface of the transparent substrate 2 opposite to the surface on which the colored metallic luster layer 4 is formed.

  In the present invention, as shown in FIG. 1C, it is preferable that the hologram laminated body 1 further has a laminated portion d in which the transparent substrate 2, the hologram layer 3 and the colored metallic luster layer 4 are laminated in this order. . This is because it is possible to satisfactorily observe the information obtained by combining the hologram reproduction image of the hologram layer and the pattern of the achromatic region in the formation region of the colored metallic gloss layer.

The area where the hologram layer is formed refers to an area where the hologram layer is formed in a plan view of the hologram laminate.
The film thickness of the hologram layer can be appropriately set depending on its type.

As a method of forming the hologram layer, it is possible to form the hologram layer by a conventionally known method depending on the recording mode of interference fringes such as volume type and relief type.
Further, when recording the interference fringes, the object light is incident from one surface of the material layer forming the hologram layer and the reference light is incident from the opposite surface to record the interference fringes. It can be formed. On the other hand, the transmission hologram layer can be formed by making both the reference light and the diffracted light incident from one surface of the material layer constituting the hologram layer to record interference fringes.

3. Transparent Substrate The transparent substrate in the present invention supports the above-mentioned hologram layer and the colored metallic luster layer provided on the above-mentioned hologram layer.

  The transparent substrate has transparency. The transparency of the transparent substrate can be appropriately selected according to the application of the hologram laminate, and is not particularly limited. For example, the transmittance in the visible light region is preferably 80% or more, and 90%. The above is more preferable. Here, the transmittance of the transparent substrate can be measured according to JIS K7361-1 (Plastic-Testing method for total light transmittance of transparent material).

  The material of the transparent substrate can be appropriately selected depending on the application of the hologram laminate of the present invention. Specifically, polyethylene film, polypropylene film, polyethylene fluoride film, polyvinylidene fluoride film, polyvinyl chloride film, polyvinylidene chloride film, ethylene-vinyl alcohol copolymer film, polyvinyl alcohol film, polymethylmethacrylate film, Examples thereof include polyether sulfone film, polyether ether ketone film, polyamide film, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer film, polyester film such as polyethylene terephthalate film, resin film such as polyimide film and resin sheet.

  The thickness of the transparent substrate is appropriately selected depending on the application and type of the hologram laminate of the present invention, but is, for example, in the range of 2 μm to 200 μm, preferably in the range of 10 μm to 50 μm. .

  The transparent base material may be subjected to a surface treatment such as a primer treatment.

4. Resin Layer In the present invention, it is preferable to have a resin layer formed directly on the colored metallic luster layer in a region overlapping the achromatic region in plan view.
Here, the achromatic region of the colored metallic gloss layer in the present invention can be formed by applying a solvent in a pattern on the surface of the colored metallic gloss ink layer. The achromatic region of the colored metallic luster layer can be formed not only when only the solvent is applied but also when the resin layer is formed by applying the coating liquid containing the solvent and the resin component. Therefore, in the case of having a resin layer, it is possible to perform a more advanced authenticity determination by utilizing the presence or absence of the resin layer due to the difference in the observation surface. In addition, since the shape and position of the resin layer and the achromatic region in plan view can be matched, the anti-counterfeit property can be improved.

It suffices that the resin layer is formed directly on the colored metallic luster layer in a region that overlaps with the achromatic region in a plan view. As shown in FIGS. It may be directly formed only on the colored metallic luster layer 4, and as shown in FIGS. 3B and 3C, the resin layer 5 is directly formed on the colored metallic luster layer 4, and the colored metallic luster layer 4 is further formed. It may be formed in a pattern on the transparent substrate 2 on which the gloss layer 4 is formed.
For example, as shown in FIG. 3B, when the hologram laminate 1 of the present invention is observed from the transparent substrate 2 side, in addition to the achromatic color area b and the chromatic color area c in the metallic luster area a, The resin layer 5 formed on the base material 2 can be observed. Therefore, it is possible to perform more advanced authenticity determination using complicated information.

  The resin layer only needs to contain a resin, and may be, for example, a transparent resin layer containing only a resin or a functional resin layer containing a resin as a binder resin. Examples of the functional resin layer include a colored resin layer containing a binder resin and a coloring material, a fluorescent resin layer containing a binder resin and a phosphor, and the like. Further, the resin layer may contain a binder resin, a coloring material and a phosphor.

  The resin or binder resin used in the resin layer is not particularly limited as long as the resin component can be dissolved or dispersed in the solvent described below, and examples thereof include a thermoplastic resin, a thermosetting resin and a photocurable resin. it can. Specific examples thereof include vinyl chloride-vinyl acetate copolymers, acrylic resins and polyester resins.

When the resin layer is a colored resin layer, pigments and dyes used in general printing layers can be used as the coloring material. As the coloring material, one kind of coloring material may be contained, or two or more kinds of coloring materials may be contained. The colored resin layer may be formed using one color, or the colored resin layers of a plurality of colors may be arranged in parallel.
The contents of the coloring material and the binder resin in the colored resin layer can be adjusted appropriately.

When the resin layer is a fluorescent resin layer, the phosphor absorbs an electromagnetic wave having a specific wavelength in the wavelength range from the ultraviolet region to the infrared region and emits another electromagnetic wave having a wavelength different from the electromagnetic wave. Any substance can be used, and examples thereof include an ultraviolet absorbing phosphor, an infrared absorbing phosphor, and a visible light absorbing phosphor. Examples of the ultraviolet absorbing phosphor include one that absorbs ultraviolet rays and emits ultraviolet rays having a wavelength shorter than the above ultraviolet rays, one that absorbs ultraviolet rays and emits visible light, and one that absorbs ultraviolet rays and emits infrared rays. Examples of the visible light absorbing phosphor include a material that absorbs visible light and emits infrared light. Further, the infrared-absorbing phosphor is one that absorbs infrared light and emits visible light, one that absorbs infrared light and emits infrared light on a longer wavelength side than the infrared light, and that absorbs infrared light on a shorter wavelength side than the infrared light. Those that emit infrared light can be mentioned.
Further, the phosphor may contain one kind of phosphor or may contain two or more kinds of phosphor.

  As the fluorescent material, known materials can be used, and as the ultraviolet absorbing forming optical material, specifically, the ultraviolet excitation visible light emitting type fluorescent material described in JP 2012-011550 A, the patent No. Examples thereof include the dichroic phosphor described in Japanese Patent No. 5573469. Further, as the infrared absorbing phosphor, the infrared excitation visible light emitting type phosphor described in JP 2012-011550 A and the rare earth element for up-conversion described in JP 4276864 A and JP 4498825 B are used. Examples include phosphors containing the same.

The thickness of the resin layer is not particularly limited as long as it can be formed on the colored metallic gloss layer, but is preferably in the range of 0.1 μm to 20 μm, and more preferably in the range of 0.1 μm to 2 μm.
This is because if the thickness of the resin layer is too thick, the surface irregularities of the hologram laminate of the present invention may become large and the workability may deteriorate. On the other hand, if the thickness of the resin layer is too thin, it may be difficult to uniformly form the resin layer of the colored metallic luster layer, or the achromatic area formed at the same time when the resin layer is formed may be uneven. This is because there is a possibility that

  The resin layer in the present invention can be formed by applying a coating solution containing a solvent and a resin component in a pattern on the surface of the colored metallic luster ink layer. The details of the method for forming the resin layer will be described in the section “C. Method for manufacturing hologram laminate” described later, and thus the description thereof is omitted here.

5. Other Configurations The hologram laminate of the present invention is not particularly limited as long as it has a transparent substrate, a hologram layer and a colored metallic luster layer, and the necessary configuration can be appropriately selected and added.

(1) Reflective layer In the hologram laminate of the present invention, when the hologram layer is a relief type hologram layer, it is preferable to have a reflective layer on the relief structure surface. This is because by providing the reflection layer on the relief structure surface of the relief type hologram layer, the reflection and diffraction efficiency of the relief structure can be enhanced, and a high-luminance hologram reproduced image can be expressed.
The reflective layer may be transparent or opaque, but when the area where the hologram layer is formed overlaps with the achromatic area in the colored metallic gloss layer in plan view, a transparent reflective layer is usually used as the reflective layer. To be Further, in the present invention, the reflective layer is preferably a transparent reflective layer. In addition, the transparent reflective layer has a substantially colorless and transparent hue when used in combination with a transparent relief-type hologram layer, and its optical refractive index is different from that of the hologram layer, so that it has no metallic luster. Regardless, it is possible to visually recognize the glitter of the hologram reproduced image.
As a specific reflection layer, for example, a metal reflection layer described in JP2013-014081A, JP2014-092646A, a transparent metal reflection layer, a transparent resin reflection layer, or the like can be used. Further, the reflective layer may have tackiness or thermal adhesiveness.

(2) Protective Layer The hologram laminate of the present invention may have a protective layer between the hologram layer and the colored metallic luster layer. This is because the hologram layer can be protected.

As the protective layer, a film base material may be laminated or a resin may be laminated.
The film substrate used for the protective layer is not particularly limited, and examples thereof include polyethylene film, polypropylene film, polyvinyl fluoride film, polyvinylidene fluoride film, polyvinyl chloride film, polyvinylidene chloride film, ethylene-vinyl alcohol film. , Polyvinyl alcohol film, polymethyl methacrylate film, polyether sulfone film, polyether ether ketone film, polyamide film, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer film, polyester film such as polyethylene terephthalate film, polyimide film and the like. It
As the resin used for the protective layer, for example, polymethyl acrylate, acrylic and methacrylic resins such as polymethyl methacrylate, polyvinyl chloride resin, cellulose resin, silicone resin, chlorinated rubber, casein, various surfactants, Examples thereof include one kind or a mixture of two or more kinds of metal oxides, epoxy modified acrylate resin, urethane modified acrylate resin, acrylic modified polyester and the like.

  The thickness of the protective layer may be any thickness as long as it is transparent enough not to impair the visibility of the reproduced hologram image, and is, for example, in the range of 0.1 μm to 100 μm, and particularly 0.5 μm to 50 μm. It is preferably within the range.

  It is preferable that the protective layer has transparency to such an extent that it does not hinder the display of the reproduced hologram image. The light transmittance of the protective layer is not specified by a strict numerical value, and can be appropriately determined according to the application of the hologram laminate of the present invention. In addition, the term “transparent” includes colorless and transparent and colored and transparent to the extent that visibility is not impaired.

The haze value of the protective layer is preferably low. This is because if the haze value of the protective layer is high, the display of the hologram reproduced image may be hindered. The specific haze value of the protective layer is preferably about 0.5 to 15.
The haze value is a value measured according to JIS K7136.

  The protective layer is provided between the hologram layer and the colored metallic luster layer, but it is preferable that the protective layer is formed on the entire surface of the hologram layer on which the colored metallic luster layer is formed. This is because the hologram layer can be suitably protected and the surface on which the colored metallic luster layer is formed can be made flat.

(3) Print Layer The hologram laminate of the present invention may have a print layer 6 on the transparent substrate 2, as shown in FIGS. 6 (a) to 6 (c). This is because different information can be given to the hologram laminate of the present invention by the printing layer.
The printed layer usually has a pattern different from the pattern of the achromatic region. Further, the printed layer may be directly formed on the transparent substrate, or may be formed on the transparent substrate via another layer. As shown in FIGS. 6A to 6C, when the printed layer 6 is directly formed on the colored metallic gloss layer 4, the pattern of the printed layer 4 is usually the chromatic area c in the metallic gloss area a. Is formed. That is, the pattern of the printed layer does not affect the achromatic area in the metallic gloss area.
6A to 6C are a schematic plan view and a schematic cross-sectional view showing another example of the hologram laminate of the present invention. 6C is a cross-sectional view taken along the line AA of FIGS. 6A and 6B, and FIG. 6A is a view observed from the direction B in FIG. 6C. 6B is a diagram observed from the direction C in FIG.

  As a material for forming the printing layer, a general printing ink can be used. Examples of the printing ink include those containing a colorant such as a pigment or dye and a binder resin.

  The printed layer preferably has information different from the hologram reproduced image by the hologram layer and the pattern of the colored metallic luster layer. The information of the printed layer can be appropriately selected from the information described as the information displayed by the colored metallic gloss layer described above. Further, the hologram laminate may be decorated.

The method for forming the printing layer is not particularly limited, and general printing methods such as offset printing, gravure printing, flexographic printing, letterpress printing, screen printing, inkjet printing, sublimation transfer printing, melt transfer printing, and the like can be used. . Alternatively, it may be formed by a transfer method.
When the printed layer is formed directly on the colored metallic luster layer, a solvent that does not dissolve the binder resin and dye of the colored metallic luster layer is usually used as the solvent when forming the printed layer.

(4) Other members Examples of the other members include an antistatic layer, an adhesive layer or a pressure-sensitive adhesive layer, a release layer, a magnetic recording layer, an IC chip, an optical recording layer, and the like. It can be laminated at any time.

6. Method for producing hologram laminate The method for producing a hologram laminate of the present invention includes, for example, a step of forming a hologram layer on a transparent substrate and a step of forming a colored metallic luster ink layer in a pattern on the transparent substrate. And a step of forming a colored metallic gloss layer by applying a coating solution containing a solvent in a pattern on the surface of the colored metallic gloss ink layer. Details of the method for manufacturing the hologram laminate will be described later in the section “C. Method for manufacturing hologram laminate”, and thus the description thereof is omitted here.

7. Uses The hologram laminate of the present invention can be used for a member that requires high security such as forgery prevention. Above all, it is preferably used for a member for which it is desired to give different information (variable information) for each hologram laminated body, for example, an information recording medium. Examples of the information recording medium include cash vouchers such as gift certificates, securities, stock certificates, various cards such as magnetic cards and IC cards, tickets, banknotes, passports, identification cards, public competition voting tickets, and the like.

B. Information recording medium The information recording medium of the present invention includes a transparent base material, a hologram layer formed on the transparent base material, and metallic gloss particles having an achromatic metallic luster formed in a pattern on the transparent base material. , A colored metal gloss layer containing a dye and a binder resin, the colored metal gloss layer formation region observed from the transparent substrate side, an achromatic region showing the achromatic metal gloss, and the A hologram that has a chromatic color region that is a region other than the chromatic region and exhibits a chromatic metallic luster, and the formation region of the colored metallic luster layer observed from the colored metallic luster layer side shows a chromatic metallic luster. It is characterized by having a laminated body.

The information recording medium of the present invention will be described with reference to the drawings.
7 (a) and 7 (b) are a schematic plan view and a sectional view showing an example of the information recording medium of the present invention, and FIG. 7 (a) is a sectional view taken along the line AA of FIG. 7 (b). As shown in FIGS. 7A and 7B, the information recording medium 10 of the present invention has supports 11A and 11B and a hologram laminate 1. In FIGS. 7A and 7B, two supports 11A and 11B having a window W and a hologram laminate 1 arranged between the supports 11A and 11B are provided, and the window W An example is shown in which the colored metallic luster layer 4 and the formation region a are arranged so as to overlap each other in plan view. Since the details of the hologram laminate 1 can be the same as the contents described in FIGS. 1A to 1C described above, the description thereof is omitted here.

According to the present invention, by having the hologram laminate described above, an information recording medium having good security can be obtained.
Hereinafter, each component of the information recording medium of the present invention will be described.

1. Hologram Laminated Body The hologram laminated body used in the present invention can be the same as the contents described in the above-mentioned section "A. Hologram laminated body", and therefore the description thereof is omitted here.

2. Support The information recording medium of the present invention usually has a support disposed on at least one surface side of the above-mentioned hologram laminate.
In addition, the form of the support can be appropriately selected depending on the application of the information recording medium of the present invention, and is not particularly limited, and has a window portion, the window portion, and the metallic gloss region of the hologram laminate. Are preferably arranged so as to overlap each other in a plan view. This is because it is easy to observe the metallic luster area of the hologram laminate from the window. Moreover, it can be applied to various information recording media.

  As the material of the support, the above-mentioned transparent base material may be used, and glassine paper, synthetic paper (polyolefin-based, polystyrene-based, etc.), high-quality paper, medium-quality paper, art paper, coated paper, cast-coated paper You may use the papers of. Moreover, you may use what formed the printing layer on the above-mentioned transparent base material.

The window portion is provided so that the formation region of the colored metallic gloss layer and the formation region of the hologram layer in the hologram laminate can be observed from both sides of the information recording medium.
The window may be formed by forming an opening in the support itself or by forming a printing layer having an opening on a transparent support.
The size of the window can be appropriately selected according to the size of the hologram laminate.

  The thickness of the support is appropriately selected depending on the application and type of the information recording medium of the present invention, but is, for example, in the range of 2 μm to 200 μm, preferably in the range of 10 μm to 50 μm.

3. Others The information recording medium of the present invention is not particularly limited as long as it has the above-mentioned hologram laminate, and a necessary configuration can be appropriately selected and added.
The information recording medium of the present invention may be, for example, cash vouchers such as gift certificates, securities, stock certificates, various cards such as magnetic cards, IC cards, tickets, banknotes, passports, identification cards, public competition voting tickets, and the like. it can.

C. Method for producing hologram laminate The method for producing a hologram laminate of the present invention comprises a hologram layer forming step of forming a hologram layer on a transparent substrate, and metallic luster particles having an achromatic metallic luster, a dye and a binder component. A colored metallic luster ink layer containing the metallic luster particles, the dye, and the binder resin, which exhibits a chromatic metallic luster by applying the colored metallic luster ink to the transparent substrate in a pattern and solidifying the pigment. A step of forming a colored metallic gloss ink layer to be formed, applying a coating solution containing a solvent to the surface of the colored metallic gloss ink layer in a pattern, and observing the colored metallic gloss ink layer from the transparent substrate side. In the forming region, an achromatic region showing the achromatic metallic luster and a region other than the achromatic region showing the chromatic metallic luster is formed. Accordingly, the manufacturing method is characterized by including a coating liquid application step of forming a colored metallic luster layer.

  The area where the colored metallic luster ink layer is formed refers to an area where the colored metallic luster ink layer is formed in a plan view of the transparent substrate.

The method for manufacturing the hologram laminate of the present invention will be described with reference to the drawings.
FIGS. 8A to 8C are process drawings for explaining an example of the method for manufacturing the hologram laminate of the present invention. In the method for manufacturing a hologram laminate of the present invention, first, as shown in FIG. 8A, the hologram layer 3 is formed on the transparent substrate 2 (hologram layer forming step). Next, as shown in FIG. 8B, a colored metallic luster ink containing metallic luster particles having an achromatic metallic luster, a dye and a binder component is applied in a pattern on the transparent substrate 2 and solidified. As a result, a colored metallic luster ink layer 4 ′ containing metallic luster particles, a dye and a binder resin and exhibiting chromatic metallic luster is formed (colored metallic luster ink layer forming step). Next, as shown in FIG. 8 (c), a coating solution 7 containing a solvent is applied in a pattern on the surface of the colored metallic luster ink layer 4 ', and the colored metallic luster observed from the transparent substrate 2 side. The colored metallic luster layer 4 is formed by changing the ink layer forming region so as to exhibit an achromatic metallic luster (coating liquid applying step). FIG. 8 shows an example in which the solvent 71 is applied as the coating liquid 7. From the above, the hologram laminate 1 can be manufactured.

  9A to 9D are process diagrams showing another example of the method for manufacturing a hologram laminate of the present invention. The hologram layer forming step shown in FIG. 9A and the colored metallic luster ink layer forming step shown in FIG. 9B can be the same as the contents described in FIGS. 8A and 8B described above. Therefore, the description here is omitted. In the present invention, for example, as shown in FIG. 9C, in the coating liquid application step, as the coating liquid 7, a coating liquid 72 for a colored resin layer containing a solvent, a coloring material and a binder component is applied. You may. The colored resin layer 51 can be formed by using the colored resin coating liquid 71.

  According to the present invention, the colored metal gloss layer can be formed by including the colored metal ink layer forming step and the coating liquid applying step. Therefore, it is possible to manufacture a hologram laminate having good security.

  Hereinafter, each step in the method for manufacturing a hologram laminate of the present invention will be described.

1. Hologram layer forming step The hologram layer forming step in the present invention is a step of forming a hologram layer on a transparent substrate. The transparent substrate used in this step, the material of the hologram layer, the method for forming the hologram layer, and the hologram layer obtained by this step are the same as those described in the above section "A. Hologram laminate". Therefore, the description here is omitted.

2. Colored metallic luster ink layer forming step In the colored metallic luster ink layer forming step of the present invention, a colored metallic luster ink containing a metallic luster particles having an achromatic metallic luster, a dye and a binder component is patterned on the transparent substrate. It is a step of forming a colored metallic luster ink layer containing the metallic luster particles, the dye and the binder resin and exhibiting a chromatic metallic luster by applying the metallic luster particles and solidifying.

The colored metallic luster ink contains metallic luster particles having an achromatic metallic luster, a dye and a binder component. The metallic luster particles and the dye can be the same as the contents described in the above-mentioned section "A. Hologram laminated body", and therefore description thereof will be omitted here.
Further, the binder component may be the binder resin described in the above section “A. Hologram laminated body” or a composition for a binder resin which is a material of the binder resin.
About the content of each component of the metallic gloss particles, dye, and binder component with respect to the total solid content of the colored metallic gloss ink, depending on the content of each component of the metallic gloss particles, dye, and binder resin in the colored metallic gloss layer Can be adjusted.

Colored metallic luster inks usually contain a solvent. The solvent is not particularly limited as long as it can dissolve the binder component and the dye and does not deteriorate each component. Examples of the solvent include methyl ethyl ketone (MEK), toluene, methyl isobutyl ketone (MIBK), ethyl acetate and the like. These solvents may be used alone or in combination of two or more.
The content of the solvent in the colored metallic gloss ink is appropriately adjusted according to the types of the metallic gloss particles, the dye and the binder component, and the coating method of the metallic gloss ink. The content of the solvent is, for example, preferably 20% by mass to 80% by mass, and more preferably 40% by mass to 80% by mass with respect to the total amount of the colored metallic gloss ink.
If the content of the solvent is too small or too large, it may be difficult to form the colored metallic luster ink layer having a desired thickness.

  In this step, the above-mentioned colored metallic luster ink is applied in a pattern on a transparent substrate. As a method for applying the colored metallic luster ink in a pattern, a general printing method can be used, and specific examples thereof include a gravure printing method, an inkjet method, a screen printing method and the like.

In the present invention, the colored metallic luster ink layer is formed by solidifying the coating film of the colored metallic luster ink formed on the transparent substrate. As a method of solidifying the coating film, the coating film of the colored metallic luster ink may be dried and solidified. When the colored metallic luster ink contains a binder resin composition, it is cured by heating or light irradiation. May be.
Above all, in the present invention, it is preferable to dry and solidify the coating film of the colored metallic gloss ink. This is because it is possible to suppress alteration of the dye due to light irradiation and high temperature heating.

The method for drying the coating film of the colored metallic luster ink may be natural drying or heating drying. In the case of drying by heating, the heating temperature is not particularly limited as long as the deterioration of the colored metallic luster ink layer can be suppressed, but is preferably 150 ° C. or lower, and more preferably within the range of 100 ° C. to 120 ° C.
The heating time is preferably within the range of 0.5 minutes to 2 minutes, and more preferably within the range of 0.5 minutes to 1 minute.
If the heating temperature and the heating time are too long, it may take a long time.
As the heating means, a general heating means such as a hot plate can be used.

The colored metallic luster ink layer obtained in this step has colored metallic luster particles, a dye and a binder resin, and exhibits a chromatic metallic luster. The colored metallic luster ink layer exhibits a chromatic metallic luster, specifically, on the both sides of the transparent substrate side and the colored metallic luster ink layer side, the colored metallic luster ink layer forming area has a chromatic metallic luster. Refers to exhibiting luster.
The thickness, pattern, etc. of the colored metallic luster ink layer can be the same as the contents described in the above-mentioned section "A. Holographic laminate", and therefore the description thereof is omitted here.

3. Coating liquid coating step In the coating liquid coating step of the present invention, the coating liquid containing a solvent is applied in a pattern on the surface of the colored metallic luster ink layer, and the colored metal observed from the transparent substrate side. By forming an achromatic region showing the achromatic metallic luster and a region other than the achromatic region showing a chromatic metallic luster in the forming region of the gloss ink layer, a colored metallic luster is obtained. This is a step of forming a layer.

  The coating liquid may contain at least a solvent, may contain only the solvent, and may further contain other components. For example, a coating liquid for a transparent resin layer containing a solvent and a resin, a coating liquid for a colored resin layer containing a solvent, a coloring material and a binder component, a coating liquid for a fluorescent resin layer containing a solvent, a phosphor and a binder component. Liquid etc. can be mentioned.

  When the coating liquid contains a solvent and other components, the content of the solvent is not particularly limited as long as it can form an achromatic region in the region where the colored metallic gloss layer is formed, but 5% by mass or more, and particularly 30 It is preferably in the range of 80% by mass to 80% by mass. If the content of the solvent contained in the coating liquid is too small, it may be difficult to form the achromatic region. Further, when the content of the solvent contained in the coating liquid is large, it may be difficult to form a resin layer, for example.

  As the solvent used in this step, a solvent that can dissolve at least the binder resin contained in the colored metallic gloss ink layer is usually used. Such a solvent can be appropriately selected according to the type of the binder resin, and is not particularly limited, but, for example, when the binder resin is a resin containing a vinyl chloride-vinyl acetate copolymer, toluene, methyl ethyl ketone (MEK), MIBK, ethyl acetate, isopropyl alcohol (IPA) and the like can be mentioned.

  The solvent used in this step is appropriately selected according to the type and content of the binder resin contained in the colored metallic luster ink layer. Further, the above-mentioned solvent is only required to be able to dissolve at least the binder resin contained in the colored metallic gloss ink layer, and the degree of dissolution has a colored metallic gloss ink layer formation region observed from the transparent substrate side. There is no particular limitation as long as it can change from colored metallic luster to achromatic metallic luster. As a method of selecting a solvent, for example, as a laminate for evaluation, a transparent substrate, and a metal substrate on which a colored metallic gloss ink layer containing a dye and a binder resin is formed are prepared. By applying 0.1 μl of solvent per unit thickness (1 μm) of the colored metallic luster ink layer on the surface of the colored metallic luster layer, the metallic luster of the colored metallic luster ink layer is changed from chromatic metallic luster to It can be selected and judged depending on whether or not the color changes to metallic luster.

  The coating liquid is usually applied in a pattern on the region where the colored metallic luster ink layer is formed. Specific examples of the method for applying the solvent include an inkjet printing method, a gravure printing method, a silk printing method, an offset printing method, and the like.

  The coating amount of the coating liquid applied to the formation region of the colored metallic gloss ink layer is not particularly limited as long as it can form the achromatic region, but the binder resin and the thickness of the colored metallic gloss layer and the coating liquid Is appropriately selected according to the type. The coating amount of the coating liquid is such that the coating amount of the solvent to be coated is within the range of 0.1 μl to 5.0 μl, particularly 0.1 μl to 1 per unit thickness (1 μm) of the colored metallic gloss ink layer. It is preferable that the coating is carried out in the range of 0.0 μl, particularly in the range of 0.5 μl to 1.0 μl. This is because if the coating amount of the coating liquid is small, it may be difficult to form an achromatic region in the colored metallic gloss layer. Also, if the coating amount of the coating liquid is too large, achromatic metallic luster may be observed even on the colored metallic luster layer side.

  In this step, after the coating liquid is applied to the colored metallic luster ink layer, heat treatment may be performed or natural drying may be performed. Further, when the coating liquid contains a binder component, a curing treatment may be carried out, if necessary.

  In this step, by applying a coating solution containing a solvent, the formation region of the colored metallic luster ink layer observed from the transparent substrate side can be changed so as to show an achromatic metallic luster. Can be used as a colored metallic luster layer. The colored metallic luster layer can be the same as the content described in the above-mentioned section "A. Hologram laminated body", and therefore the description thereof is omitted here.

4. Other Steps The hologram laminate of the present invention is not particularly limited as long as it has the above-mentioned steps, and necessary steps can be appropriately selected and added. As such a process, for example, a process of arranging any structure described in the above-mentioned section "A. Hologram laminated body" can be mentioned. In the present invention, in the case of forming another structure on the colored metal gloss layer, it is necessary to use a solvent in which the solvent used in forming the other structure does not dissolve the binder resin and the dye in the colored metal gloss layer. is there.

5. Hologram Laminate The hologram laminate produced by the method for producing a hologram laminate of the present invention can be the same as the content described in the above-mentioned section "A. Hologram Laminate", and therefore the description here. Is omitted.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, has substantially the same configuration as the technical idea described in the scope of the claims of the present invention, and has any similar effect to the present invention. It is included in the technical scope of the invention.

  Hereinafter, the present invention will be described more specifically with reference to examples.

[Experimental Example 1]
A 50 μm thick polyethylene terephthalate (PET) film was prepared as a transparent substrate. A colored metallic luster ink layer having a thickness of 1 μm was prepared by preparing a colored metallic luster ink having the following composition, applying it on the entire surface of the transparent substrate by a wire bar coating method, and heating at 100 ° C. for 1 minute and drying. Obtained.

<Composition of colored metallic luster ink>
Ink containing a bright pigment made of aluminum pigment (Showa Ink Industry Co., Ltd.) ...
70 parts by weight Dye (AISEN SPILON YELLOW RHS-Liq, Hodogaya Chemical Co., Ltd.) 1 part by weight Solvent (MEK) 29 parts by weight

  A solvent (MEK) was applied to the surface of the above-mentioned colored metallic luster ink layer in a half region of the colored metallic luster ink layer, and naturally dried to obtain a colored metallic luster layer. The colored metallic luster layer evaluation base material was produced by the above process.

[Evaluation]
FIG. 10 is a photograph of the observation surface on the transparent substrate side and the observation surface on the coated surface side of the colored metallic luster layer evaluation substrate of Experimental Example 1.
When the colored metal gloss layer evaluation base material was visually evaluated with respect to the solvent-coated area and the solvent-free area, the transparent base material side was found in the colored metal gloss layer area where the solvent was not applied. A gold color was observed on both sides of the colored metallic luster layer side. On the other hand, in the region coated with the solvent, silver was observed on the transparent substrate side and gold was observed on the colored metallic gloss layer side.

[Experimental Example 2]
A 50 μm thick polyethylene terephthalate (PET) film was prepared as a transparent substrate. A colored metallic luster ink layer having a thickness of 1 μm was prepared by preparing a colored metallic luster ink having the following composition, applying it on the entire surface of the transparent substrate by a wire bar coating method, and heating at 100 ° C. for 1 minute and drying. Obtained.

<Composition of colored metallic luster ink>
Ink containing a bright pigment made of aluminum pigment (Showa Ink Industry Co., Ltd.) ...
70 parts by weight Dye (AISEN SPILON YELLOW RHS-Liq, Hodogaya Chemical Co., Ltd.) 1 part by weight Solvent (MEK) 29 parts by weight

The following coating solution for colored resin layer was prepared.
<Composition of coating liquid for colored resin layer>
Dye (AISEN SPILON RED BEH S-Liq, Hodogaya Chemical Co., Ltd.) 1 part by weight Vinyl chloride-vinyl acetate copolymer 19 parts by weight Solvent (MEK) 40 parts by weight Solvent (toluene) 40 parts by weight

  In the half area of the area where the colored metallic luster ink layer is formed, the above-mentioned colored metallic luster ink layer is directly coated with the above coating solution for the colored resin layer, and heat-dried (100 ° C., 1 minute). A colored metallic luster layer and a colored resin layer were obtained. The colored metallic luster layer evaluation base material was produced by the above process.

[Evaluation]
FIG. 11 is a photograph of the observation surface on the transparent substrate side and the observation surface on the coated surface side of the colored metallic luster layer evaluation substrate of Experimental Example 2.
With respect to the colored metal glossy layer evaluation base material, when a region coated with the coating liquid for the colored resin layer and a region not coated with the coating liquid for the colored resin layer were visually evaluated, a colored resin layer was formed. In the non-existing region, gold color was observed on both the transparent substrate side and the colored metallic gloss layer side. On the other hand, in the colored resin layer forming region, silver color was observed on the transparent substrate side and gold color was observed on the colored metal gloss layer side.

DESCRIPTION OF SYMBOLS 1 ... Holographic laminated body 2 ... Transparent base material 3 ... Hologram layer 4 ... Colored metallic gloss layer 4 '... Colored metallic gloss ink layer 5 ... Resin layer 6 ... Coating liquid 11A, 11B ... Support 20 ... Information recording medium

Claims (7)

A transparent substrate,
A hologram layer formed on the transparent substrate,
Wherein is formed in a pattern on a transparent substrate, have achromatic metallic luster particles having a metallic luster, and you dyes and binder resins wearing colored metallic luster layer,
The formation region of the colored metal gloss layer observed from the transparent substrate side, the colored metal gloss layer is an achromatic region showing the achromatic metallic luster, and a region other than the achromatic region, The colored metallic luster layer has a chromatic region showing a chromatic metallic luster, and the colored metallic luster layer has the chromatic color in the entire formation region of the colored metallic luster layer observed from the colored metallic luster layer side. shows a metallic luster,
In the achromatic region, the colored metal gloss layer has a concentration difference of the dye in the thickness direction, and the concentration of the dye on the surface of the colored metal gloss layer opposite to the transparent substrate has the transparent group. Higher than the concentration of the dye on the surface of the material side,
A hologram laminate, wherein the pattern of the achromatic region and / or the pattern of the chromatic region displays information .   The hologram laminate according to claim 1, further comprising a resin layer directly formed on the colored metallic gloss layer in a region overlapping with the achromatic region in a plan view.   The hologram laminate according to claim 2, wherein the resin layer is further formed on the transparent substrate on which the colored metallic luster layer is formed.   The hologram laminated body according to any one of claims 1 to 3, wherein the transparent substrate, the hologram layer, and the colored metallic luster layer have a laminated portion laminated in this order. . Transparent substrate, a hologram layer formed on the transparent substrate, and is formed in a pattern on the transparent substrate, metallic luster particles having metallic luster of the achromatic, wearing color you containing a dye and a binder resin Has a metallic luster layer,
The formation region of the colored metal gloss layer observed from the transparent substrate side, the colored metal gloss layer is an achromatic region showing the achromatic metallic luster, and a region other than the achromatic region, The colored metallic luster layer has a chromatic color region showing a chromatic metallic luster, and in the entire region of the colored metallic luster layer formation observed from the colored metallic luster layer side, the colored metallic luster layer has a chromatic color. a metallic luster shows,
In the achromatic region, the colored metal gloss layer has a concentration difference of the dye in the thickness direction, and the concentration of the dye on the surface of the colored metal gloss layer opposite to the transparent substrate has the transparent group. Higher than the concentration of the dye on the surface of the material side,
An information recording medium comprising a hologram laminate in which the pattern of the achromatic region and / or the pattern of the chromatic region displays information. The information recording medium further has a support having a window,
The information recording medium according to claim 5, wherein the window portion and the formation region of the colored metallic gloss layer of the hologram laminate are arranged so as to overlap each other in a plan view. A hologram layer forming step of forming a hologram layer on a transparent substrate,
The metallic luster particles having the achromatic metallic luster, the colored metallic luster ink containing the dye and the binder component are applied in a pattern on the transparent substrate and solidified to obtain the metallic luster particles, the dye and the binder. A colored metallic luster ink layer forming step of forming a colored metallic luster ink layer containing a resin and exhibiting chromatic metallic luster;
A coating solution containing a solvent is applied in a pattern on the surface of the colored metallic luster ink layer, and the achromatic metallic luster is applied to the formation area of the colored metallic luster ink layer observed from the transparent substrate side. A colored metallic gloss layer is formed by forming a patterned achromatic area coated with the coating liquid, and forming a chromatic area that is an area other than the achromatic area and exhibits the chromatic metallic luster. And a coating liquid applying step.