JP2017067919A - Hologram laminate, information recording medium, and method for manufacturing hologram laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hologram laminate which has good security.SOLUTION: There is provided a hologram laminate which has a transparent base material, a hologram layer formed on the transparent base material, and a coloring metallic luster layer which is formed in a pattern shape on the transparent base material and contains metallic luster particles having achromatic metallic luster, a die and a binder resin, where a formation region of the coloring metallic luster layer observed from the side of the transparent base material is an achromatic region exhibiting achromatic metallic luster and a chromatic region that is a region other than the achromatic region and exhibits chromatic metallic luster, and a formation region of the coloring metallic luster layer observed from the side of the coloring metallic luster layer exhibits chromatic metallic luster.SELECTED DRAWING: Figure 1

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 producing the hologram laminate.

  High forgery in information recording media such as gift certificates, securities, stock certificates, etc., 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 information recording medium, a hologram layer is provided on the surface, and authenticity identification is performed using a hologram reproduction image displayed by the hologram layer (for example, Patent Document 1, 2).

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

  However, in recent years, for example, counterfeit products of information display media in which the above-described hologram layer itself or metallic glossy ink layer itself has been counterfeited have become available, and it is difficult to determine authenticity and authenticity of counterfeit products. 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 has as its main object to provide a hologram laminate having good security, an information recording medium using the hologram laminate, and a method for producing the hologram laminate.

The inventors of the present invention have intensively studied 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 so as to exhibit a chromatic metallic luster. When the present inventors applied a solvent to the surface of the colored metallic glossy ink layer formed on the transparent substrate, the metallic glossy hue shown on the transparent substrate side surface of the colored metallic glossy ink layer was It has been newly found that the chromatic color changes to an achromatic color and that the colored metallic luster ink layer shows a chromatic metallic luster on the solvent-coated surface. That is, the present inventors obtain a colored metallic luster layer in which the color of the metallic luster differs between the surface on which the solvent is applied and the opposite surface by applying a solvent to the surface of the colored metallic gloss ink layer. I found out that I can do it. 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 relates to a transparent base material, a hologram layer formed on the transparent base material, a metallic glossy particle, a dye and a binder which are formed in a pattern on the transparent base material and have an achromatic metallic luster. A colored metallic luster layer containing a resin, and the formation region of the colored metallic glossy layer observed from the transparent substrate side is an achromatic region exhibiting the achromatic metallic luster, and other than the achromatic region The colored metallic luster layer forming region observed from the colored metallic luster layer side exhibits the chromatic metallic luster. A hologram laminate is provided.

  According to the present invention, by having a colored metallic luster layer, colored holograms can be obtained due to the difference in the observation surface between the case of observing the hologram laminate of the present invention from the transparent substrate side and the colored metallic gloss layer side. The presence or absence of an achromatic region in the gloss layer formation region can be indicated. A plurality of information can be shown by the colored metallic luster layer and the achromatic region. Therefore, it is possible to perform advanced authentication using the hologram laminate of the present invention by combining various information. Therefore, a hologram laminate with good security can be obtained.

  In the said invention, it is preferable to further have the resin layer formed directly on the said colored metallic luster layer in the area | region which overlaps with the said achromatic region in planar 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, since the shape and position of the achromatic region and the resin layer in plan view can be matched in the colored metal gloss layer forming region, anti-counterfeiting properties can be improved.

  In the said invention, it is also preferable that the said resin layer is further formed on the said transparent base material in which the said colored metallic luster layer was formed. When the hologram laminate of the present invention is observed from the transparent substrate side, the resin layer formed on the transparent substrate can be observed in addition to the formation region of the colored metallic luster layer. Can be shown. Therefore, it is possible to perform more advanced authentication using the hologram laminate of the present invention.

  In the said invention, it is preferable to have the laminated part by which the said transparent base material, the said hologram layer, and the said colored metallic luster layer were laminated | stacked in this order. This is because information combining the hologram reproduction image of the hologram layer and the pattern of the achromatic region in the formation region of the colored metallic luster layer can be satisfactorily observed.

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

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

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

  The present invention provides a hologram layer forming step for forming a hologram layer on a transparent substrate, and a colored metallic gloss ink containing a metallic glossy particle having an achromatic metallic luster, a dye and a binder component on the transparent substrate. A colored metallic luster ink layer forming step for 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 liquid containing a solvent is applied to the surface of the metallic glossy ink layer in a pattern, and the colored metallic glossy ink layer forming region observed from the transparent substrate side exhibits the achromatic metallic gloss. A coating liquid application step of forming a colored metallic luster layer by forming a chromatic color area and a chromatic color area that is an area other than the achromatic color area and that exhibits the chromatic metal gloss. 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 having a colored metal ink layer forming step and a coating liquid applying step. Therefore, a hologram laminate having good security can be manufactured.

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

It is the schematic plan view and schematic sectional drawing which show an 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 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. It is the schematic plan view and sectional drawing which show an example of the information recording medium of this invention. It is process drawing which shows an example of the manufacturing method of the hologram laminated body of this invention. It is process drawing which shows the other example of the manufacturing method of the hologram laminated body of this invention. 2 is a photograph of an observation surface on a transparent substrate side and an observation surface on a coating surface side of a colored metallic luster layer evaluation substrate of Experimental Example 1. It is a photograph of the observation side by the side of a transparent base of the colored metallic luster layer evaluation base material of example 2 of an experiment, and the observation side by the side of a coating.

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

A. Hologram laminate The hologram laminate of the present invention comprises a transparent base material, a hologram layer formed on the transparent base material, and a metallic luster having an achromatic metallic luster formed in a pattern on the transparent base material. A colored metallic luster layer containing particles, a dye and a binder resin, and the colored metallic luster layer formation region observed from the transparent substrate side is an achromatic region showing the achromatic metallic luster, and An area other than the achromatic area and having a chromatic area exhibiting a chromatic metallic luster, and the formation area 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 this specification, the colored metal gloss layer forming region refers to a region where the colored metal gloss layer is formed in a plan view. Moreover, in the following description, the colored metal gloss layer forming area may be referred to as a metal gloss area.
In some cases, achromatic metallic luster and chromatic metallic luster are referred to as metallic luster shades. Details of the metallic luster color 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 a hologram laminate of the present invention. 1C is a cross-sectional view taken along the line AA in FIGS. 1A and 1B, and FIG. 1A is a view observed from the B direction in FIG. 1C. (B) is the figure observed from the C direction in FIG.1 (c).
A hologram laminate 1 shown in FIGS. 1A to 1C is formed in a pattern on a transparent substrate 2, a hologram layer 3 formed on the transparent substrate 2, and a transparent substrate 2. It has metallic luster particles having a chromatic metallic luster, and a colored metallic luster layer 4 containing a dye and a binder resin. In the hologram laminate 1, the formation region a (metal gloss region a) of the colored metallic gloss layer 4 observed from the transparent substrate 2 side is an achromatic color region b showing an achromatic metallic gloss, and an achromatic color. It is a region other than the region b and has a chromatic color region c showing a chromatic metal gloss, and the metal gloss region a observed from the colored metal gloss layer 4 side shows a chromatic metal gloss. . For example, silver (Silver) can be shown as an achromatic metallic luster, and gold (gold color) can be shown as a chromatic metallic luster. FIGS. 1A to 1C show an example in which the pattern of the colored metallic luster layer 4 has a square shape and a character shape of “DNP” is removed. Further, in FIGS. 1A and 1C, the metallic gloss region a observed from the transparent substrate 2 side has three rectangular patterns, and the achromatic region b has a rectangular shape including 'N'. In this example, the chromatic color region c has a square pattern including 'D' or 'P'.
1A to 1C show an example in which the hologram laminate 1 has a laminated portion d in which a transparent base material 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 reproduction image by the hologram layer 3 and a metallic gloss region a through the hologram layer 3 are observed. The In the metallic gloss region a, an achromatic color region b and a chromatic color region c are observed. On the other hand, when the hologram laminate 1 is observed from the colored metallic gloss layer 4 side, a chromatic metallic gloss is observed in the metallic gloss region a. Accordingly, the hologram laminate 1 shown in FIGS. 1A to 1C is observed by the difference in observation surface between the case of being observed from the transparent substrate 2 side and the case of being observed from the colored metallic gloss layer 4 side. From the above, the presence or absence of the hologram reproduction image and the presence or absence of the achromatic region b are identified in the metallic gloss region a.

2A to 2C are a schematic plan view and a schematic cross-sectional view showing another example of the hologram laminate of the present invention. 2 (c) is a cross-sectional view taken along line AA in FIGS. 2 (a) and 2 (b), and FIG. 2 (a) is a view observed from the B direction in FIG. 2 (c). (B) is the figure observed from the C direction in FIG.2 (c).
The hologram laminate 1 shown in FIGS. 2A to 2C further includes a resin layer 5 formed directly on the colored metallic luster layer 4 in a region overlapping the achromatic region b in plan view. . 2B and 2C show an example in which the resin layer 5 is a colored resin layer 51. FIG. 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-described laminated portion. .
2A to 2C, the pattern of the colored metallic luster layer 4 has a square pattern, and the pattern of the achromatic color region b and the colored resin layer 51 in the metallic glossy region a is “DNP”. It shows an example having a character-shaped pattern and the chromatic color region c having 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, the achromatic region b and the chromatic color in the metallic gloss region a. Region c is observed. On the other hand, when the hologram laminate 1 is observed from the colored metallic gloss layer 4 side, as shown in FIG. 2B, the metallic gloss region a is observed to show a chromatic metallic gloss, and further, the achromatic region. The colored resin layer 51 is observed in a region overlapping with b in plan view. Accordingly, the hologram laminate 1 shown in FIGS. 2 (a) to 2 (c) is observed by the difference in the observation surface between the case of being observed from the transparent substrate 2 side and the case of being observed from the colored metallic gloss layer 4 side. From this, in the metallic luster region a, the presence or absence of the achromatic region b and the presence or absence of the colored resin layer 51 are identified.

3A to 3C are a schematic plan view and a schematic sectional view showing another example of the hologram laminate of the present invention. 3 (c) is a cross-sectional view taken along line AA in FIGS. 3 (a) and 3 (b), and FIG. 3 (a) is a view observed from the B direction in FIG. 3 (c). (B) is the figure observed from the C direction in FIG.3 (c).
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. Furthermore, an example is shown in which a colored resin layer 51 is also formed on the transparent substrate 2 on which the colored metallic luster layer 4 is formed. About the pattern of the achromatic color area | region b and the chromatic color area | region c in the colored metallic luster layer 4 and the metallic luster area | region a, it is the same as that of the pattern demonstrated in FIG. Further, the colored resin layer 51 is formed directly on the colored metallic gloss layer 4 in a region overlapping the achromatic region in plan view, and further, the portion where the character shape of “N” is removed from the colored metallic gloss layer 4 The transparent substrate 2 is also formed. 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 substrate 2 side, as shown in FIG. 3A, the reproduced image of the hologram layer and the hologram in the metallic gloss region a Through the layers, the achromatic color region b, the chromatic color region c, and the “N” pattern of the colored resin layer 51 are observed. On the other hand, as shown in FIG. 3B, when the hologram laminate 1 is observed from the colored metallic gloss layer 4 side, the metallic gloss area a is observed to show a chromatic metallic gloss, and further, an achromatic area. A square pattern of the colored resin layer 51 is observed in a region overlapping with b in plan view. Therefore, the hologram laminate 1 shown in FIGS. 3A to 3C is observed by the difference in the observation surface between when observed from the transparent substrate 2 side and when observed from the colored metallic gloss layer 4 side. From the above, the presence or absence of the hologram reproduction image, the presence or absence of the achromatic region b, and the change in the pattern of the colored resin layer 51 are identified in the metallic gloss region a.

  According to the present invention, by having a colored metallic luster layer, colored holograms can be obtained due to the difference in the observation surface between the case of observing the hologram laminate of the present invention from the transparent substrate side and the colored metallic gloss layer side. The presence or absence of an achromatic region in the gloss layer formation region can be indicated. A plurality of information can be shown by the colored metallic luster layer and the achromatic region. Therefore, it is possible to perform advanced authentication using the hologram laminate of the present invention by combining various information. Therefore, a hologram laminate with good security can be obtained.

  As described above, the colored metallic glossy ink layer containing the metallic glossy particles having an achromatic metallic luster, the dye and the binder resin is usually formed by adjusting so as to exhibit a chromatic metallic luster. . When the present inventors applied a solvent to the surface of the colored metallic glossy ink layer formed on the transparent substrate, the metallic glossy hue shown on the transparent substrate side surface of the colored metallic glossy ink layer was It has been newly found that the chromatic color changes to an achromatic color and that the colored metallic luster ink layer shows a chromatic metallic luster on the solvent-coated surface. That is, the present inventors obtain a colored metallic luster layer in which the color of the metallic luster differs between the surface on which the solvent is applied and the opposite surface by applying a solvent to the surface of the colored metallic gloss ink layer. I found out that I can do it.

About this reason, it estimates as follows.
That is, it is assumed that the binder resin in the colored metallic glossy ink layer is dissolved by the solvent applied to the surface of the colored metallic glossy ink layer, and that the dye dissolved in the binder resin is also dissolved in the solvent. . Further, it is assumed that the solvent penetrates to the transparent base material side in the colored metallic glossy ink layer as the binder resin dissolves in the solvent. In addition, it is assumed that the solvent that soaks into the colored metallic glossy ink layer evaporates again from the surface of the colored metallic glossy ink layer. At this time, the dye dissolved in the evaporating solvent moves from the transparent substrate side to the surface side of the colored metallic glossy ink layer, resulting in a difference in the dye concentration in the thickness direction of the layer. It is speculated that a metallic luster is observed.

  The present invention has been found for the first time that the above-mentioned phenomenon occurs with respect to a colored metallic glossy ink layer, and is obtained by applying a coating liquid containing a solvent to the surface of the colored metallic glossy ink layer in a pattern using the above phenomenon. The present invention has a great feature in that a colored metallic luster 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 the 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, on the chromatic colored metallic gloss ink layer formed on the transparent substrate or the above of the transparent substrate A method of forming a metallic glossy ink layer exhibiting an achromatic metallic gloss on the surface opposite to the surface on which the colored metallic glossy ink layer is formed is conceivable. However, in this case, in the portion where the colored metallic glossy ink layer and the metallic glossy ink layer are overlapped, the surface roughness of the hologram laminate is increased, and the workability of the hologram laminate may be reduced.
On the other hand, in the hologram laminate of the present invention, since the achromatic region can be observed using a single colored metallic luster layer, the surface irregularities of the hologram laminate can be reduced. The processability of the hologram laminate can be improved.
Hereafter, each structure of the hologram laminated body of this invention is demonstrated.

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. In addition, the colored metallic luster layer has a colored metallic luster layer formation region observed from the transparent substrate side, an achromatic region exhibiting an achromatic metallic luster, and a region other than the achromatic region, and a chromatic colored metallic layer. It has a chromatic color region exhibiting gloss, and a colored metal gloss layer forming region observed from the colored metal gloss layer side exhibits chromatic metal gloss. The formation region of the colored metallic luster layer observed from the colored metallic luster layer side usually exhibits a chromatic metallic luster in the entire region.

(1) Color of metallic luster In the present specification, metallic luster refers to showing reflection characteristics observed on a general metal surface.
An achromatic metallic luster means a metallic luster and a white color. The white color includes not only white color but also white color.
In addition, the chromatic metallic luster refers to a metallic luster and a color having a color. The chromatic metallic luster refers to a metallic luster of a color 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, for example, is determined by L ^* a ^* b ^* color system measured by the SCI method ^. It can be specified by value, a ^* value, b ^* value.
Specifically, it is defined by measuring the spectral reflection characteristic using a spectrocolorimeter and calculating 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 (Special Components Include) method is a method of detecting the total of specular reflection light and diffuse reflection light, that is, measuring the 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 a desired metallic luster can be exhibited. For example, it is preferably 35 or more, more preferably 50 or more, and particularly preferably 60 or more.

The color 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 gloss region observed from the transparent substrate side shows an achromatic metallic gloss, 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 within the range of 0 to 20, for example, 0 to It is preferable to be within the range of 10.
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 within the range of 0 to 20, for example. It is preferable to be within the range of 0-10.

On the other hand, the chromatic region of the colored metallic gloss layer observed from the transparent substrate side and the metallic gloss region observed from the colored metallic gloss layer side show a chromatic metallic gloss. In this case, the a ^* value and the b ^* value in the L ^* a ^* b ^* color system take a value smaller or larger than the above-described numerical range.
When the colored metallic luster layer exhibits a chromatic metallic luster, the absolute value of the a ^* value difference Δa ^* from the above-described achromatic metallic luster is preferably 5 or more, and more preferably in the range of 5 to 15. .
When the colored metallic luster layer exhibits a chromatic metallic luster, the absolute value of the b ^* value difference Δb ^* from the achromatic metallic luster described above is preferably 20 or more, and more preferably in the range of 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 color of the metallic luster of the colored metallic luster layer due to the difference in the observation surface.

(2) Material of colored metallic luster layer The colored metallic luster layer in the present invention contains metallic luster particles, a dye and a binder resin.

(A) Metal luster particles Metal luster particles are particles having an achromatic metal luster.
The metallic gloss particles having an achromatic metallic gloss means that the metallic gloss particles exhibit the achromatic metallic gloss described above.

The material of the metallic luster particles may be a material exhibiting an achromatic metallic luster or a material having an achromatic metallic luster formed on the surface.
Examples of the material for the metallic glossy particles include aluminum. Further, the material for the metallic luster particles may be a powder material such as aluminum powder or a paste material such as aluminum paste. Aluminum is easy to adjust the color 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 true spherical shape, an elliptical shape, an indefinite shape, a rectangular parallelepiped shape, and a cubic shape.

The average particle diameter 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 for example, in the range of 5 μm to 50 μm, especially in the range of 10 μm to 20 μm. It is preferable to be within.
This is because if the average particle size of the metallic glossy particles is too small, it may be difficult to uniformly disperse the metallic glossy particles in the binder resin. Further, when the average particle size of the metallic glossy particles is too large, there is a possibility that unevenness occurs in the metallic gloss of the colored metallic glossy layer.
The average particle size of the metallic luster particles means the average when each metallic luster particle is a monodispersed metallic luster particle, that is, a metallic luster particle having a single shape, and has a broad particle size distribution. In the case of the irregularly shaped metallic luster particles, it means the particle size of the metallic luster particles that are most abundant by particle size distribution measurement. Further, the particle diameter of the metallic glossy particles having a shape other than the spherical shape is a value indicated by the diameter of the circumscribed sphere. The average particle diameter 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 laser diffraction or SEM photography. Further, in the present invention, for example, each particle diameter of 10 metallic luster particles can be measured by SEM photography, and the average can be calculated. Moreover, the average particle diameter of the metallic luster particles can also be measured by a Coulter counter method or a laser diffraction method.

  The content of the metallic luster particles in the colored metallic luster layer is not particularly limited as long as a desired metallic luster can be imparted to the colored metallic luster layer. For example, the content within the range of 10% by mass to 40% by mass, especially 20 It is preferable that it is in the range of 40% by mass. This is because if the content of the metallic luster particles in the colored metallic luster layer is small, 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. This is because the content of the binder resin is relatively reduced, and 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 becomes difficult to form the colored metallic luster layer itself.

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

The color of the dye is not particularly limited as long as a desired chromatic color can be imparted to the colored metallic luster layer. For example, dyes of various colors such as yellow, red, orange, green, blue, purple are used. Can do. For example, when a yellow dye is added to the colored metallic luster layer, gold can be imparted as the chromatic metallic luster of the colored metallic luster layer.
Moreover, when a red dye and a yellow dye are added to the colored metallic luster layer, a copper color can be shown as the chromatic metallic luster of the colored metallic luster layer.

  Specific dyes can be appropriately selected according to the use of the colored metallic luster layer, and are not particularly limited. Examples thereof include metal complex dyes such as chromium complex dyes and copper complex dyes.

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

(C) Binder resin The binder resin in this invention disperses | distributes the metallic gloss particle mentioned above, and melt | dissolves the dye mentioned above.
The binder resin preferably has a desired light transmittance, and can be selected from an ionizing radiation curable resin, a thermoplastic resin, a thermosetting resin, and the like.
As the binder resin, for example, a resin containing a vinyl chloride-vinyl acetate copolymer can be suitably 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. For example, the content is in the range of 20% by mass to 80% by mass, and in particular, 40% by mass to 80%. It is preferable to be in the range of mass%, particularly in the range of 60 mass% to 80 mass%. This is because if the binder resin content is too small, it may be difficult to form a colored metallic gloss layer. If the binder resin content is too high, the content of metallic gloss particles and dyes is relatively high. It is because it may be difficult to obtain a colored metallic luster layer exhibiting a desired metallic luster color because it is relatively less.

(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 configuration can be appropriately selected and added. Examples of such a material include a surfactant.

(3) Colored metallic luster layer The colored metallic luster layer in the present invention is only required to be formed on a transparent substrate, and as shown in FIG. 4 may be formed, and the colored metallic luster layer 4 may be formed on the transparent substrate 2 via another layer as shown in FIG. When the colored metallic gloss layer 4 is formed on the transparent substrate 2 via another layer, the colored metallic gloss layer 4 is formed on the hologram layer 3 as shown in FIG. Preferably it is. This is because information obtained by combining the hologram reproduction image of the hologram layer with at least one of the colored metallic gloss layer and the achromatic region in the metallic gloss region can be observed.

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

  In the case where the colored metallic gloss layer displays information, for example, as shown in FIGS. 1A to 1C, the pattern of the colored metallic gloss layer 4 may have the information described above. (A)-(c) The pattern of the achromatic color area | region b and the chromatic color area | region c of the metallic luster area | region a in the colored metallic luster layer 4 may have the information mentioned above. Moreover, the pattern of a colored metallic luster layer and the pattern of an achromatic color area | region and a chromatic color area | region may have the information mentioned above.

  The pattern of the colored metallic luster layer can be appropriately selected according to the use of the hologram laminate of the present invention, and is not particularly limited. For example, lines, dots, letters, numbers, figures, symbols, patterns, and these Background. Further, as shown in FIGS. 2A to 2C, the colored metallic luster layer 4 has a desired planar view outer shape at a desired position on the transparent substrate 2, and covers the entire surface in the planar view outer shape. You may form so that it may coat | cover. Further, when the pattern of the colored metallic gloss layer is the background, the colored metallic gloss layer is formed over the entire area, for example, with a pattern such as a figure removed on the transparent substrate.

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

  The thickness of the colored metallic luster layer is not particularly limited as long as it can be formed on a transparent substrate, and can be appropriately selected according to the use of the hologram laminate. The thickness of the colored metallic luster 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 luster layer is too thin, it may be difficult to form the colored metallic luster layer, or the metallic luster color will be sufficiently different on the transparent substrate side and the surface side of the colored metallic luster layer. This may be difficult. On the other hand, when the thickness of the colored metallic luster layer is too thick, the processability of the hologram laminate may be lowered.

  As a method for forming a colored metallic glossy layer, the colored metallic glossy ink layer containing the above-described metallic glossy particles, dye, binder component and solvent is applied in a pattern on a transparent substrate and dried to form a colored metallic glossy ink layer. After forming, a colored metallic luster layer can be formed by applying a coating liquid 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 for manufacturing hologram laminate” described later, and therefore the description thereof is omitted here.

2. Hologram layer The hologram layer in the present invention is formed on a transparent substrate.

The hologram layer only needs to have interference fringes recorded thereon, and may be a reflection type or a transmission type. When the hologram layer is formed so as to overlap with the formation region of the colored metallic luster layer, a transmission type is usually used.
In the present invention, various hologram layers corresponding to the recording form of the interference fringes can be used. Specific examples include a relief hologram layer and a volume hologram layer.

(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. It is done.
Materials used for the volume hologram layer include, for example, thermosetting resins, ionizing radiation curable resins, thermoplastic resin layers, silver salt materials, dichromated gelatin emulsions, photopolymerizable resins, photocrosslinkable resins, photo Known materials such as a photosensitive material such as a resist, a photorefractive material made of an inorganic material, and a photosensitive material such as a photochromic material can be used. Among them, it contains a binder resin, a photopolymerizable compound, a photosensitive material containing a photopolymerization initiator and a sensitizing dye, a cationic polymerizable compound, a radical polymerizable compound, a photo radical polymerization initiator, and a photo cationic polymerization initiator. Photosensitive materials can be preferably used. Specific materials of the composition included in the above-described photosensitive material can be the same as the materials described in, for example, JP2013-068960A.
The volume hologram layer may contain any material that can be generally added to the volume hologram layer in addition to the above-described materials.

(2) Relief-type hologram layer Any relief-type hologram layer may be used as long as it has a concavo-convex structure (relief structure) corresponding to interference fringes on its surface, and a known one can be used.

Examples of the relief hologram layer include a cured resin layer obtained by curing a thermosetting resin, an ionizing radiation curable resin, a thermoplastic resin layer, a silver salt material, a dichromated gelatin emulsion, a thermoplastic, and a diazo photosensitive material. And a photosensitive layer made of a photosensitive material such as a photoresist, a ferroelectric, a photochromic material, a thermochromic material, and chalcogen glass.
The details of the thermosetting resin, ionizing radiation curable resin, and thermoplastic resin, which are the materials of the cured resin layer, are the same as the resin material of the hologram layer described in, for example, Japanese Patent Application Laid-Open No. 2014-126799. can do.
The relief hologram layer may contain any material that can generally be added to the relief hologram layer in addition to the above-described materials.

  The shape or 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 hologram layer.

The relief hologram layer is usually provided with a reflective layer on the surface on which the relief structure is formed. This is because it has a unique optical design due to the effect of the relief structure and the reflective layer. The reflective layer may be formed of the above-described colored metallic luster layer, or a reflective layer described in the section “4. Other configurations” described later may be used.
The relief hologram layer is arranged so that the surface side facing the surface on which the relief structure is formed is the light source side.

(3) Others The hologram reproduction 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, patterns, and the like can be given.
In addition, the hologram reproduction image does not display specific information, and may be a display in which the brightness of the diffracted light is uniform over the entire surface of the hologram layer.

  In the present invention, the hologram reproduction image displayed on the hologram layer may have uniform diffracted light brightness. Note that the hologram layer displaying a hologram reproduction image in which the brightness of the diffracted light is uniform refers to a hologram layer in which interference fringes of equal intervals are recorded at a constant angle.

The hologram layer may be transparent, translucent or opaque. When laminating with a colored metallic luster layer, the hologram layer usually has transparency.
When the hologram layer is a transmission 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 reflective relief hologram layer, an opaque aluminum vapor deposition layer usually formed following the relief surface of the hologram layer to modulate the refractive index, or vapor deposition of transparent titanium oxide, zinc sulfide, etc. Since the layer functions as a reflective layer, the transparency of the reflective relief hologram layer can be appropriately selected. Further, a volume hologram is usually transparent because it does not have a reflective layer, but may be opaque.

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

Further, as shown in FIGS. 1C, 3C, 4 and 5, in the hologram layer 3, the formation area d of the hologram 3 layer overlaps with the formation area a of the colored metallic luster layer 4 in plan view. It may be formed so that it does not overlap in plan view as shown in FIG. In particular, in the present invention, the hologram layer is preferably formed so that the formation region of the hologram layer overlaps the formation region of the colored metallic luster layer in plan view. This is because information combining the hologram reproduction image of the hologram layer and the pattern of the achromatic region of the colored metallic luster layer can be displayed, and advanced authentication can be performed using the hologram laminate of the present invention. . 1C, FIG. 3C, and FIG. 5 show an example in which the colored metal gloss layer formation region a overlaps the hologram layer formation region e in a plan view. 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.
In addition, when the hologram layer formation region and the colored metallic gloss layer formation region overlap in plan view, it is particularly preferable that the hologram layer formation region and the achromatic region overlap in plan view.
This is because advanced authentication 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 substrate. It shows an example in which a colored metallic luster layer is formed on the top and on the hologram layer. FIG. 5 shows an example in which the hologram layer 3 is formed on the surface opposite to the surface on which the colored metallic luster layer 4 of the transparent substrate 2 is formed.

  In the present invention, as shown in FIG. 1C, it is preferable that the hologram laminate 1 has a laminated portion d in which a transparent base material 2, a hologram layer 3, and a colored metallic luster layer 4 are laminated in this order. . This is because information combining the hologram reproduction image of the hologram layer and the pattern of the achromatic region in the formation region of the colored metallic luster layer can be satisfactorily observed.

The hologram layer formation region refers to a region 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 the type.

The hologram layer can be formed by a conventionally known method according to the recording pattern of interference fringes such as volume type and relief type.
Further, when recording interference fringes, object light is incident from one surface of the material layer constituting the hologram layer, and reference light is incident from the opposite surface to record the interference fringes. Formation is possible. On the other hand, a transmission hologram layer can be formed by recording interference fringes by making both reference light and diffracted light enter from one surface of the material layer constituting the hologram layer.

3. Transparent base material The transparent base material in this invention supports the hologram layer mentioned above and the colored metallic luster layer which has on the said hologram layer.

  The transparent substrate has transparency. The transparency of the transparent substrate can be appropriately selected according to the use 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% More preferably. Here, the transmittance | permeability of a transparent base material can be measured by JISK7361-1 (the test method of the total light transmittance of a plastic-transparent material).

  The material of the transparent substrate can be appropriately selected according to the use of the hologram laminate of the present invention. Specifically, a polyethylene film, a polypropylene film, a polyvinyl fluoride film, a polyvinylidene fluoride film, a polyvinyl chloride film, a polyvinylidene chloride film, an ethylene-vinyl alcohol copolymer film, a polyvinyl alcohol film, a polymethyl methacrylate film, Examples include polyether sulfone films, polyether ether ketone films, polyamide films, polyester films such as tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer films, polyethylene terephthalate films, and resin films and resin sheets such as polyimide films.

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

  The transparent substrate may be subjected to surface treatment such as 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 glossy layer in the present invention can be formed by applying a solvent in a pattern on the surface of the colored metallic glossy ink layer. Moreover, not only when applying only the solvent, but also when the resin layer is formed by applying a coating liquid containing a solvent and a resin component, the achromatic region of the colored metallic luster layer can be formed. Therefore, when it has a resin layer, a more advanced authenticity determination can be performed using the presence or absence of the resin layer by the difference in an observation surface. Moreover, since the shape and position of the resin layer and the achromatic region in plan view can be matched, anti-counterfeiting can be improved.

The resin layer may be formed directly on the colored metallic luster layer in a region overlapping the achromatic region in plan view. As shown in FIGS. 2B and 2C, the resin layer 5 It may be formed directly only on the colored metallic luster layer 4, and as shown in FIGS. 3B and 3C, the resin layer 5 is formed directly on the colored metallic gloss layer 4, and further the colored metal. 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 region b and the chromatic region c in the metallic gloss region a, the transparent The resin layer 5 formed on the base material 2 can be observed. Therefore, it is possible to perform more advanced authentication 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. Moreover, as a resin layer, you may contain binder resin, a coloring material, and fluorescent substance.

  The resin or binder resin used for the resin layer is not particularly limited as long as the resin component can be dissolved or dispersed in a solvent described later, and examples thereof include thermoplastic resins, thermosetting resins, and photocurable resins. it can. Specifically, a vinyl chloride-vinyl acetate copolymer, an acrylic resin, a polyester resin, and the like can be given.

When the resin layer is a colored resin layer, pigments and dyes used for general printing layers can be used as the color material. As the coloring material, one kind of coloring material may be contained, or two or more kinds of coloring materials may be contained. Moreover, the colored resin layer may be formed using one color, and a plurality of colored resin layers may be juxtaposed.
About content of the coloring material and binder resin in a colored resin layer, it can adjust suitably.

When the resin layer is a fluorescent resin layer, the phosphor absorbs an electromagnetic wave having a specific wavelength in the wavelength region from the ultraviolet region to the infrared region, and emits another electromagnetic wave having a wavelength different from the electromagnetic wave. Any material may be used, and examples include ultraviolet absorbing phosphors, infrared absorbing phosphors, and visible light absorbing phosphors. Examples of the ultraviolet absorbing phosphor include those that absorb ultraviolet rays and emit ultraviolet rays having a wavelength shorter than the ultraviolet rays, those that absorb ultraviolet rays and emit visible light, and those that absorb ultraviolet rays and emit infrared rays. Further, examples of the visible light absorbing phosphor include those that absorb visible light and emit infrared rays. The infrared-absorbing phosphor is one that absorbs infrared rays and emits visible light, one that absorbs infrared rays and emits infrared light having a longer wavelength than the infrared rays, and one that absorbs infrared rays and emits infrared rays having a shorter wavelength than the infrared rays. The thing which light-emits infrared rays is mentioned.
Moreover, as fluorescent substance, 1 type of fluorescent substance may be contained and 2 or more types of fluorescent substance may be contained.

  Known phosphors can be used as the phosphor, and specific examples of the ultraviolet absorptive forming light body include an ultraviolet-excited visible light-emitting phosphor described in JP2012-011550A, Patent No. And a dichroic phosphor described in Japanese Patent No. 5573469. Further, as the infrared absorbing phosphor, an infrared excited visible light emitting phosphor described in JP2012-011550A or a rare earth element that performs up-conversion described in Japanese Patent No. 4276864 or Japanese Patent No. 4498825 is used. Examples thereof include phosphors.

The thickness of the resin layer is not particularly limited as long as it can be formed on the colored metallic luster 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 resin layer is too thick, the surface irregularities of the hologram laminate of the present invention may increase and the processability 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, unevenness in the achromatic region formed simultaneously with the formation of the resin layer, etc. This is because there is a possibility of occurrence.

  The resin layer in this invention can be formed by apply | coating the coating liquid containing a solvent and a resin component to the surface of a colored metallic luster ink layer in a pattern form. Details of the method for forming the resin layer will be described in the section of “C. Method for Producing Hologram Laminate”, which will be described later, and thus 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 a 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 hologram layer, it is preferable to have a reflective layer on the relief structure surface. This is because by providing the reflective layer on the relief structure surface of the relief hologram layer, the reflection and diffraction efficiency of the relief structure can be increased, and a high-luminance hologram reproduction image can be expressed.
The reflective layer may be transparent or opaque, but when the hologram layer formation area overlaps the achromatic area in the colored metallic luster layer in plan view, the reflective layer is usually used as the reflective layer. It is done. In the present invention, the reflective layer is preferably a transparent reflective layer. In addition, the transparent reflective layer, when used in combination with a transparent relief hologram layer, has a substantially colorless and transparent hue, and its optical refractive index is different from the refractive index of the hologram layer. Regardless, the brightness of the hologram reproduction image can be visually recognized.
As a specific reflective layer, for example, a metal reflective layer, a transparent metal reflective layer, a transparent resin reflective layer, or the like described in JP2013-014081A, JP2014092646A, or the like can be used. Moreover, the reflective layer may be provided with adhesiveness or thermal adhesiveness.

(2) Protective layer In the hologram laminate of the present invention, a protective layer may be provided 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 substrate may be laminated, or a resin may be laminated.
The film substrate used for the protective layer is not particularly limited. For example, a polyethylene film, a polypropylene film, a polyvinyl fluoride film, a polyvinylidene fluoride film, a polyvinyl chloride film, a polyvinylidene chloride film, an ethylene-vinyl alcohol film. And polyester film such as polyvinyl alcohol film, polymethyl methacrylate film, polyether sulfone film, polyether ether ketone film, polyamide film, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer film, polyethylene terephthalate film, polyimide film, etc. The
Examples of the resin used for the protective layer include acrylic and methacrylic resins such as polymethyl acrylate and polymethyl methacrylate, polyvinyl chloride resin, cellulose resin, silicone resin, chlorinated rubber, casein, various surfactants, Examples include one or a mixture of two or more of metal oxides, epoxy-modified acrylate resins, urethane-modified acrylate resins, acrylic-modified polyesters, and the like.

  The thickness of the protective layer is not particularly limited as long as the transparency of the hologram reproduction image is not hindered. It is preferable to be within the range.

  The protective layer preferably has a transparency that does not hinder the display of the hologram reproduction image. The light transmittance of the protective layer is not defined by a strict numerical value, and can be appropriately determined according to the use of the hologram laminate of the present invention. Further, the term “transparent” includes colorless and transparent and colored transparency that does not hinder visibility.

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 reproduction image may be hindered. In addition, as a specific haze value of a protective layer, about 0.5-15 is preferable.
The haze value is a value measured according to JIS K7136.

  The protective layer is provided between the hologram layer and the colored metallic gloss layer, and among them, the protective layer is preferably formed over the entire surface of the hologram layer on which the colored metallic gloss 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 In the hologram laminated body of this invention, as shown to Fig.6 (a)-(c), you may have the print layer 6 on the transparent base material 2. FIG. This is because different information can be imparted to the hologram laminate of the present invention by the print layer.
The printed layer usually has a pattern different from the pattern of the achromatic region. Moreover, the printing layer may be formed directly on the transparent base material, and may be formed via another layer on the transparent base material. As shown in FIGS. 6A to 6C, when the printing layer 6 is formed directly on the colored metallic gloss layer 4, the pattern of the printing layer 4 is usually a chromatic region c in the metallic gloss region a. Formed. That is, the pattern of the printing layer does not affect the achromatic region in the metallic gloss region.
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 line AA in FIGS. 6A and 6B, and FIG. 6A is a view observed from the B direction in FIG. 6C. (B) is the figure observed from the C direction in FIG.6 (c).

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

  The printed layer preferably has information different from the hologram reproduction image by the hologram layer and the pattern of the colored metallic luster layer. About the information of a printing layer, it can select suitably from what was demonstrated as information which the colored metallic luster layer mentioned above displays. 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, ink jet printing, sublimation transfer printing, and melt transfer printing can be used. . Further, it may be formed by a transfer method.
When the printing layer is formed directly on the colored metallic gloss layer, a solvent that does not dissolve the binder resin and dye of the colored metallic gloss layer is usually used as the solvent used when forming the printed layer.

(4) Other members Examples of 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, and an optical recording layer. It can be laminated in a timely manner.

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 gloss ink layer in a pattern on the transparent substrate. And a step of forming a colored metallic gloss layer by applying a coating liquid 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 Producing Hologram Stack”, and thus description thereof will be omitted.

7). Use As a use of the hologram laminate of the present invention, it can be used for a member requiring high security such as forgery prevention. Among them, it is suitably used for a member that is desired to be given different information (variable information) for each hologram laminate, for example, an information recording medium. Examples of the information recording medium include money vouchers such as gift certificates, securities and 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 glossy particles having an achromatic metallic luster formed in a pattern on the transparent base material A colored metallic gloss layer containing a dye and a binder resin, and the colored metallic gloss layer forming region observed from the transparent substrate side is an achromatic region showing the achromatic metallic gloss, and A hologram having a chromatic region that is a region other than the chromatic region and exhibiting a chromatic metallic luster, and wherein the colored metallic gloss layer forming region observed from the colored metallic gloss layer side exhibits a chromatic metallic gloss It has a laminated body.

The information recording medium of the present invention will be described with reference to the drawings.
FIGS. 7A and 7B are a schematic plan view and a cross-sectional view showing an example of the information recording medium of the present invention, and FIG. 7A is a cross-sectional view taken along line AA of FIG. 7B. As shown in FIGS. 7A and 7B, the information recording medium 10 of the present invention includes supports 11A and 11B and a hologram laminate 1. 7 (a) and 7 (b), two support bodies 11A and 11B having a window portion W and a hologram laminate 1 disposed between the support bodies 11A and 11B are provided. An example is shown in which the colored metal gloss layer 4 formation area a is arranged so as to overlap in plan view. Note that the details of the hologram laminate 1 can be the same as the contents described in FIGS. 1A to 1C described above, and thus the description thereof is omitted here.

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

1. Hologram Laminate The hologram laminate used in the present invention can be the same as the content described in the above-mentioned section “A. Hologram Laminate”, and will not be described here.

2. Support The information recording medium of the present invention usually has a support disposed on at least one surface side of the hologram laminate described above.
Further, the form of the support can be appropriately selected according to the use of the information recording medium of the present invention, and is not particularly limited, but has a window, the window, and the metallic gloss region of the hologram laminate. Are preferably arranged so as to overlap in plan view. This is because it is easy to observe the metallic gloss region of the hologram laminate from the window. Further, it can be applied to various information recording media.

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

The window portion is provided so that the formation region of the colored metallic luster 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 providing an opening in the support itself, or may be formed by providing a printing layer having an opening on a transparent support.
About the magnitude | size of a window part, it can select suitably according to the magnitude | size etc. of a hologram laminated body.

  The thickness of the support is appropriately selected according to the use and type of the information recording medium of the present invention, and 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 hologram laminate described above, and a necessary configuration can be appropriately selected and added.
The information recording medium of the present invention may be, for example, gold certificates such as gift certificates, securities and stock certificates, various cards such as magnetic cards and 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 glossy particles having an achromatic metallic luster, a dye and a binder component A colored metallic gloss ink layer containing the metallic gloss particles, the dye and the binder resin and exhibiting a chromatic metallic gloss is formed by applying the colored metallic gloss ink to the transparent substrate in a pattern and solidifying. A colored metallic glossy ink layer forming step to be formed, and a coating liquid containing a solvent is applied to the surface of the colored metallic glossy ink layer in a pattern, and the colored metallic glossy ink layer observed from the transparent substrate side In the formation region, an achromatic region showing the achromatic metal gloss and a chromatic color region showing the chromatic metal gloss other than the achromatic region are formed. And a coating liquid coating step for forming a colored metallic luster layer.

  The region where the colored metallic glossy ink layer is formed refers to a region where the colored metallic glossy ink layer is formed in plan view of the transparent substrate.

A method for producing a hologram laminate of the present invention will be described with reference to the drawings.
8A to 8C are process diagrams for explaining an example of the method for producing a hologram laminate according to the present invention. In the method for manufacturing a hologram laminate of the present invention, first, as shown in FIG. 8A, a hologram layer 3 is formed on a transparent substrate 2 (hologram layer forming step). Next, as shown in FIG. 8B, a colored metallic gloss ink containing metallic gloss particles having an achromatic metallic gloss, a dye and a binder component is applied in a pattern on the transparent substrate 2 and solidified. Thus, a colored metallic glossy ink layer 4 ′ containing metallic glossy particles, a dye and a binder resin and exhibiting a chromatic metallic gloss is formed (colored metallic glossy ink layer forming step). Next, as shown in FIG. 8C, a coating liquid 7 containing a solvent in a pattern is applied to the surface of the colored metallic glossy ink layer 4 ′, and the colored metallic gloss 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 coating step). FIG. 8 shows an example in which a solvent 71 is applied as the coating liquid 7. As described 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. 9 (a) and the colored metallic glossy ink layer forming step shown in FIG. 9 (b) can be the same as those described in FIGS. 8 (a) and 8 (b). Therefore, the description here is omitted. In the present invention, for example, as shown in FIG. 9 (c), in the coating liquid coating step, as the coating liquid 7, a colored resin layer coating liquid 72 containing a solvent, a coloring material and a binder component is applied. May be. The colored resin layer 51 can be formed by using the colored resin coating solution 71.

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

  Hereinafter, each process in the manufacturing method of the hologram laminated body of this invention is demonstrated.

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 of 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 glossy ink layer forming step In the colored metallic glossy ink layer forming step of the present invention, the colored metallic glossy ink containing achromatic metallic glossy particles, a dye and a binder component is patterned on the transparent substrate. It is a step of forming a colored metallic glossy ink layer containing the metallic glossy particles, the dye and the binder resin and exhibiting a chromatic metallic gloss by applying and solidifying in a shape.

The colored metallic gloss ink contains metallic gloss particles having an achromatic metallic gloss, a dye and a binder component. The metallic glossy particles and the dye can be the same as those described in the above-mentioned section “A. Hologram Laminate”, and thus the description thereof is omitted here.
In addition, the binder component may be the binder resin described in the above-mentioned section “A. Hologram laminate”, or may be a binder resin composition that is a material of the binder resin.
About the content of each component of metallic luster particles, dye, and binder component with respect to the total solid content of colored metallic luster ink, depending on the content of each component of metallic luster particles, dye, and binder resin in the colored metallic gloss layer Can be adjusted.

The colored metallic gloss ink usually contains 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), and ethyl acetate. 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 type of metallic gloss particles, the dye and the binder component, and the coating method of the metallic gloss ink. As content of a solvent, it is preferable to exist in the range of 20 mass%-80 mass% with respect to the whole quantity of colored metallic luster ink, for example, especially in the range of 40 mass%-80 mass%.
This is because when the content of the solvent is too small or too large, it may be difficult to form a colored metallic glossy ink layer having a desired thickness.

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

In the present invention, the colored metallic gloss ink layer is formed by solidifying the colored metallic gloss ink film formed on the transparent substrate. As a method of solidifying the coating film, the colored metallic gloss ink may be dried and solidified. When the colored metallic gloss ink contains a binder resin composition, it is cured by heating and light irradiation. May be.
Especially, in this invention, it is preferable to dry and solidify the coating film of colored metallic luster ink. This is because deterioration of the dye by light irradiation and high-temperature heating can be suppressed.

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

The colored metallic glossy ink layer obtained in this step has colored metallic glossy particles, a dye and a binder resin, and exhibits a chromatic metallic gloss. Specifically, the colored metallic glossy ink layer exhibits a chromatic metallic gloss. Specifically, the colored metallic glossy ink layer is formed on the both sides of the transparent substrate and the colored metallic glossy ink layer. Shows gloss.
The thickness, pattern, and the like of the colored metallic gloss ink layer can be the same as the contents described in the above-mentioned section “A. Hologram laminate”, and thus the description thereof is omitted here.

3. Coating liquid coating step The coating liquid coating step in the present invention is a coating of a coating liquid containing a solvent on the surface of the colored metallic glossy ink layer, and the colored metal observed from the transparent substrate side. By forming an achromatic region showing the above-mentioned achromatic metallic gloss and a chromatic color region showing a chromatic metallic gloss outside the above-mentioned achromatic region in the formation region of the glossy ink layer, a colored metallic gloss It is a process of forming a layer.

  The coating liquid only needs to contain at least a solvent, may contain only a solvent, and may further contain other components. For example, coating solution for transparent resin layer containing solvent and resin, coating solution for colored resin layer containing solvent, colorant and binder component, coating for fluorescent resin layer containing solvent, phosphor and binder component A liquid etc. can be mentioned.

  When the coating solution contains a solvent and other components, the content of the solvent is not particularly limited as long as an achromatic region can be formed in the formation region of the colored metallic luster layer, but it is 5% by mass or more, especially 30%. It is preferable to be within the range of mass% to 80 mass%. This is because if the content of the solvent contained in the coating liquid is too small, it may be difficult to form the achromatic region. Moreover, it is because when there is much content of the solvent contained in a coating liquid, it may become difficult to form a resin layer, for example.

  The solvent used in this step is usually a solvent that can dissolve at least the binder resin contained in the colored metallic glossy ink layer. Such a solvent can be appropriately selected according to the type of the binder resin, and is not particularly limited. 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.

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

  The coating liquid is usually applied in a pattern to the formation area of the colored metallic glossy ink layer. Specific examples of the solvent application method include an ink jet printing method, a gravure printing method, a silk printing method, and an offset printing method.

  The coating amount of the coating liquid applied to the colored metallic glossy ink layer forming region is not particularly limited as long as an achromatic region can be formed. However, the binder resin and thickness of the colored metallic glossy layer and the coating solution are not limited. It is suitably selected according to the type of As the coating amount of the coating liquid, the coating amount of the solvent to be applied per unit thickness (1 μm) of the colored metallic glossy ink layer is in the range of 0.1 μl to 5.0 μl, particularly 0.1 μl to 1 It is preferably applied so as to be within a range of 0.0 μl, particularly within a 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 luster layer. Further, if the coating amount of the coating liquid is too large, an achromatic metallic luster may be observed even on the colored metallic luster layer side.

  In this step, after applying the coating liquid to the colored metallic glossy ink layer, heat treatment may be performed, or natural drying may be performed. Moreover, when a coating liquid contains a binder component, you may perform a hardening process as needed.

  In this step, by applying a coating solution containing a solvent, the formation region of the colored metallic gloss ink layer observed from the transparent substrate side may be changed to show an achromatic metallic gloss. And 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 laminate”, and thus 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-described steps, and necessary steps can be appropriately selected and added. As such a process, for example, a process of arranging an arbitrary configuration described in the above-mentioned section “A. Hologram Laminate” can be cited. In the present invention, when forming another configuration on the colored metallic gloss layer, it is necessary to use a solvent that does not dissolve the binder resin and dye in the colored metallic gloss layer when forming the other configuration. 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 that described in the section “A. Hologram laminate” described above. Is omitted.

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

  The present invention will be described more specifically with reference to the following examples.

[Experimental Example 1]
A 50 μm thick polyethylene terephthalate (PET) film was prepared as a transparent substrate. A colored metallic glossy ink having the following composition is prepared, applied to the entire surface of the transparent substrate by a wire bar coating method, heated at 100 ° C. for 1 minute and dried to form a colored metallic glossy ink layer having a thickness of 1 μm. Obtained.

<Composition of colored metallic gloss ink>
Ink containing glitter pigment made of aluminum pigment (made by Showa Ink Industries) ...
70 parts by weight Dye (AISEN SPILON YELLOW RHS-Liq, manufactured by Hodogaya Chemical) ... 1 part by weight Solvent (MEK) ... 29 parts by weight

  A colored metallic glossy layer was obtained by applying a solvent (MEK) on the surface of the colored metallic glossy ink layer to a half region of the colored metallic glossy ink layer and drying it naturally. 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 coating surface side of the colored metallic luster layer evaluation substrate of Experimental Example 1.
Regarding the colored metallic gloss layer evaluation substrate, when the area where the solvent is applied and the area where the solvent is not applied are visually evaluated, in the area where the solvent of the colored metallic gloss layer is not applied, the transparent substrate side The gold color was observed on both sides of the colored metallic luster layer. On the other hand, in the region where the solvent was applied, a silver color was observed on the transparent substrate side and a gold color was observed on the colored metal gloss layer side.

[Experiment 2]
A 50 μm thick polyethylene terephthalate (PET) film was prepared as a transparent substrate. A colored metallic glossy ink having the following composition is prepared, applied to the entire surface of the transparent substrate by a wire bar coating method, heated at 100 ° C. for 1 minute and dried to form a colored metallic glossy ink layer having a thickness of 1 μm. Obtained.

<Composition of colored metallic gloss ink>
Ink containing glitter pigment made of aluminum pigment (made by Showa Ink Industries) ...
70 parts by weight Dye (AISEN SPILON YELLOW RHS-Liq, manufactured by Hodogaya Chemical) ... 1 part by weight Solvent (MEK) ... 29 parts by weight

The following coating solution for a colored resin layer was prepared.
<Composition of coating solution for colored resin layer>
Dye (AISEN SPILON RED BEH S-Liq, manufactured by Hodogaya Chemical) ... 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 in the formation area of the colored metallic glossy ink layer, the above colored metallic glossy ink layer is directly applied on the colored resin glossy ink layer and thermally 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 coating surface side of the colored metallic luster layer evaluation substrate of Experimental Example 2.
When the colored metallic luster layer evaluation substrate is visually evaluated for the region where the colored resin layer coating solution is applied and the region where the colored resin layer coating solution is not applied, a colored resin layer is formed. In the absence region, a gold color was observed on both the transparent substrate side and the colored metallic luster layer side. On the other hand, in the colored resin layer formation region, silver was observed on the transparent substrate side and gold was observed on the colored metallic luster layer side.

DESCRIPTION OF SYMBOLS 1 ... Hologram laminated body 2 ... Transparent base material 3 ... Hologram layer 4 ... Colored metallic glossy layer 4 '... Colored metallic glossy 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;
A metallic glossy layer containing a metallic glossy particle having achromatic metallic luster, a dye and a binder resin, formed in a pattern on the transparent substrate,
The formation area of the colored metallic luster layer observed from the transparent substrate side is an achromatic area showing the achromatic metallic luster and an area other than the achromatic area and showing a chromatic metallic luster. A hologram laminate having a chromatic region, wherein a colored metal gloss layer forming region observed from the colored metal gloss layer side exhibits the chromatic metal gloss.   The hologram laminate according to claim 1, further comprising a resin layer formed directly on the colored metallic luster layer in a region overlapping the achromatic region in 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.   4. The hologram laminate according to claim 1, further comprising a laminated portion in which the transparent substrate, the hologram layer, and the colored metallic luster layer are laminated in this order. 5. .   Colored metallic luster containing transparent base material, hologram layer formed on the transparent base material, and metallic glossy particles having achromatic metallic luster, dye and binder resin formed in a pattern on the transparent base material The colored metallic luster layer formation region observed from the transparent base material side is an achromatic region exhibiting the achromatic metallic luster, and a region other than the achromatic region and a chromatic color region. An information recording comprising a chromatic color region exhibiting a metallic luster, wherein the colored metal gloss layer forming region observed from the colored metallic gloss layer side has a hologram laminate exhibiting a chromatic metallic gloss Medium. The information recording medium further comprises a support having a window;
6. The information recording medium according to claim 5, wherein the window portion and the colored metal gloss layer forming region of the hologram laminate are arranged so as to overlap in plan view. A hologram layer forming step of forming a hologram layer on a transparent substrate;
The metallic glossy particles, the dye and the binder are obtained by applying a solid metallic glossy ink containing a metallic glossy achromatic color, a dye and a binder component on the transparent substrate in a pattern and solidifying. A colored metallic gloss ink layer forming step of forming a colored metallic gloss ink layer containing a resin and showing a chromatic metallic gloss;
A coating liquid containing a solvent is applied in a pattern on the surface of the colored metallic glossy ink layer, and the achromatic metallic gloss is applied to the formation area of the colored metallic glossy ink layer observed from the transparent substrate side. And a coating liquid coating step for forming a colored metallic gloss layer by forming a chromatic color region that is a region other than the achromatic color region and a chromatic color region that shows the metallic gloss of the chromatic color. A method for producing a hologram laminate, which is characterized.