JPWO2016031450A1 - Laminate - Google Patents

Abstract

Providing a low-cost laminated body capable of authenticity determination. The security paper 1 is an information carrier having a base layer 31, a bright layer 32 having a character A image, and a transparent glossy layer 33 having a character B image laminated on the upper side Z2 of the bright layer 32. A thread 3 and a base paper 2 that holds the information carrying thread 3 are provided.

Description

  The present invention relates to a laminate capable of authenticity determination.

  Conventionally, there has been a security paper in which a thread having a hologram image or the like is drawn on a paper material (see, for example, Patent Document 1). Since the paper making process requires a special technique, such security paper is difficult to forge.

Japanese Patent Publication No. 5-85680

However, since a thread having a hologram image or the like is expensive, a thread paper using the thread is also expensive.
An object of this invention is to provide the laminated body which can authenticate determination at low cost.

  The present invention solves the problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this. In addition, the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

The first aspect of the present invention is the authenticity, wherein the upper surface side is the observation side, and includes a base layer, a glitter layer having the first image, and a transparent glossy layer having a second image stacked above the glitter layer. A laminate including an image carrier for determination and a holding layer for holding the image carrier.
-2nd invention WHEREIN: In the laminated body of 1st invention, the observation aspect which can discriminate | determine only the said 1st image among the said 1st image and the said 2nd image, and only the said 2nd image It is the laminated body characterized by having the observation mode which can discriminate | determine.
-A third invention is the laminate of the first or second invention, wherein the image carrier is embedded in the holding layer and is exposed from the holding layer when viewed from the observation side. It is the laminated body characterized by having the exposed part and the coating | coated part covered with the said holding | maintenance layer.
-4th invention is the laminated body of any one of 1st to 3rd invention, The said base layer is laminated | stacked below the said brightness layer, It is a laminated body characterized by the above-mentioned.
The fifth invention is a laminate according to any one of the first to third inventions, wherein the base layer is transparent and is laminated above the transparent glossy layer. Is the body.
-The sixth invention is the laminate of any one of the first to third inventions, wherein the base layer is transparent and is laminated between the glitter layer and the transparent glossy layer. This is a featured laminate.

  ADVANTAGE OF THE INVENTION According to this invention, the laminated body which can authenticate can be provided at low cost.

It is a figure which shows the security paper 1 of 1st Embodiment. It is sectional drawing of the security paper 1 of 1st Embodiment. It is a figure explaining the printing content of the brightness layer 32 and the transparent glossy layer 33 of 1st Embodiment. It is a figure explaining how the information carrying thread 3 of 1st Embodiment looks. It is sectional drawing of the display part 4 vicinity of the security paper 201 of 2nd Embodiment. It is sectional drawing of the display part 4 vicinity of the security paper 301 of 3rd Embodiment.

(Embodiment)
Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating a security sheet 1 according to the first embodiment.
FIG. 1A is a view of the security paper 1 as viewed from the upper side Z2.
FIG. 1B is a cross-sectional view taken along the line BB in FIG.
FIG. 1C is an enlarged view of the vicinity of the exposed portion 4 as viewed from the upper side Z2.
FIG. 2 is a cross-sectional view of the security paper 1 according to the first embodiment.
2A is a cross-sectional view in the vicinity of the exposed portion 4 (2A-2A cross-sectional view in FIG. 1C).
FIG. 2B is a cross-sectional view in the vicinity of the covering portion 5 (2B-2B cross-sectional view in FIG. 1C).
FIG. 3 is a diagram illustrating the print contents of the glitter layer 32 and the transparent gloss layer 33 according to the first embodiment.
FIG. 3 is an enlarged view of a region corresponding to one character of each of the glitter layer 32 and the transparent gloss layer 33.
In the embodiment and drawings, an XYZ orthogonal coordinate system is shown as appropriate for ease of explanation and understanding. This coordinate system is based on the state of FIG. 1A, in the horizontal direction X (left side X1, right side X2), vertical direction Y (lower side Y1, upper side Y2), and thickness direction Z (lower side Z1, upper side Z2). ).

(Configuration of security paper 1)
As shown in FIG. 1, in the embodiment, the security paper 1 (laminated body) will be described by taking securities as an example.
The security paper 1 has a base paper 2 (holding layer) and an information carrying thread 3 (an image carrying body for authenticity determination) engraved on the base paper 2.
The base paper 2 is a paper material that is the base of the security paper 1. The base paper 2 holds the information carrying thread 3 when the information carrying thread 3 is drawn.

The information carrying thread 3 is a band-like member that is long in the vertical direction Y. The information carrying thread 3 extends in the longitudinal direction Y in a partial range in the left-right direction X of the base paper 2.
The information carrying thread 3 has image information for authenticating the security paper 1. As will be described later, the information-carrying thread 3 observes different images depending on the viewing angle or the like. For this reason, the information carrying thread 3 is observed like a hologram.
In the embodiment, a plurality of characters are arranged in the vertical direction Y as the image.
When the security paper 1 is viewed from the upper side Z2, the information carrying thread 3 includes an exposed portion 4 (see FIG. 2A) exposed from the base paper 2 and a covering portion 5 (see FIG. 2A). 2B). These are arranged alternately. A plurality of sets are continuously arranged in the vertical direction Y, with one exposed portion 4 and one covering portion 5 as one set.

The information carrying thread 3 has a main configuration described in, for example, Japanese Patent No. 4604209. That is, the information carrying thread 3 has the following configuration.
As shown in FIG. 2A, in the information carrying thread 3, a base layer 31, a bright layer 32, and a transparent gloss layer 33 are laminated in this order from the lower side Z1 to the upper side Z2.
The base layer 31 is a base material for the information carrying thread 3. The base layer 31 is a band-shaped member. The base layer 31 has a thickness of about 16 μm, for example.
In the embodiment, a resin sheet material of PET (polyethylene terephthalate) is used as the base layer 31, but is not limited thereto. The base layer 31 only needs to be able to carry a printing layer such as the glitter layer 32, and may be, for example, white paper, fine paper, coated paper, a plastic card, or the like.

The glitter layer 32 is formed on the entire upper surface of the base layer 31. The glitter layer 32 is formed by printing glossy ink on the base layer 31. The gloss ink contains a glittering material containing aluminum powder, copper powder, zinc powder, tin powder, iron phosphide, and the like as components. The gloss ink has a color such as silver, bluish gold, and reddish gold.
The glitter layer 32 is formed by dot printing of glossy ink. The glitter layer 32 expresses shades of color based on the difference in the dot area ratio between the print areas. Thereby, the glitter layer 32 expresses a character, a figure, a pattern, or the like.
The halftone dot area rate is the ratio of halftone dots per unit area.
In the embodiment, the concept of “character” includes the shape of a character. Further, the concept of “image” includes a character shape fixed on a medium by printing or the like.

As shown in FIG. 3A, the glitter layer 32 includes an A image portion 32a and an A background portion 32b as viewed from the upper side Z2.
The shape of the A image portion 32a is the shape of the letter “A”.
The A background portion 32b is a print area that becomes the background of the A image portion 32a.
Thereby, the glitter layer 32 has the letter “A” as an image (first image).
The dot area ratio of the A image portion 32a is higher than the dot area ratio of the A background portion 32b. The halftone dot area ratio is set as follows.
A image portion 32a: 100% (that is, solid printing)
A background part 32b: 50 to 80%
Difference between the halftone dot area ratios: 20 to 50%

The halftone dot area ratio is not limited to the above setting as long as the letter “A” can be recognized in the observation mode described later. The halftone dot area ratio may be in the following form, for example.
The halftone dot area ratio of the A background portion 32b may be made higher than the halftone dot area ratio of the A image portion 32a by reversing the halftone dot area ratio from the above setting.
The halftone dot area ratio of the A image portion 32a may be 100% or less.
The halftone dot area ratio of the A background portion 32b may be other than 50 to 80%.
The dot area ratio of the A background portion 32b can be set to any numerical value within 50 to 80% depending on the visibility of the image. The halftone dot area ratio of the A background portion 32b is not limited to any fixed value, but may be changed within a range of 50 to 80% in the region of the A background portion 32b. In this case, in the diffuse reflection area θ1 (described later), an image such as a shadow or a pattern can be expressed in the A background portion 32b.

The transparent gloss layer 33 is formed on the entire upper surface of the glitter layer 32. The transparent gloss layer 33 is formed by printing transparent ink on the glitter layer 32. The transparent ink is transparent and has a glossy feeling after printing. The ink for the transparent gloss layer 33 is, for example, a transparent varnish such as a mat OP varnish, an ink varnish, a transparent ink, or a medium ink. The ink may be an ultraviolet curable ink, an oxidation polymerization type ink, a penetrating ink, a heat drying ink, an evaporation drying ink, or the like.
The transparent gloss layer 33 is formed by halftone printing of transparent ink. The transparent gloss layer 33 has a difference in the amount of reflected light between the print areas due to the difference in the dot area ratio between the print areas. Thereby, the transparent glossy layer 33 expresses a character, a figure, a pattern, or the like.
As shown in FIG. 3B, the transparent glossy layer 33 includes a B image portion 33a and a B background portion 33b as viewed from the upper side Z2.
The shape of the B image portion 33a is the shape of the letter “B”. The B image portion 33a and the A image portion 32a overlap each other (see FIG. 1C).
The B background portion 33b is a print area that becomes the background of the B image portion 33a.
Thereby, the transparent glossy layer 33 has the letter “B” as an image (second image).

The halftone dot area ratio of the B image portion 33a is higher than the halftone dot area ratio of the B background portion 33b. The dot area ratio is as follows.
B image portion 33a: 100% (that is, solid printing)
-B background part 33b: 25%
Difference between halftone dot area ratio: 75%
However, this ratio is also an example, and is not limited to this as long as the letter “B” can be recognized based on the difference between the halftone dot area ratios. The halftone dot area ratio may be in the following form, for example.
The halftone dot area ratio of the B background portion 33b may be made higher than the halftone dot area ratio of the B image portion 33a by reversing the halftone dot area ratio from the above setting.
The halftone dot area ratio of the B image portion 33a may be 100% or less.
The halftone dot area ratio of the B background portion 33b may be 25% or more or the following.

  In the embodiment, the difference (75%) in the halftone dot area ratio between the B image portion 33a and the B background portion 33b of the transparent glossy layer 33 is the net between the A image portion 32a and the A background portion 32b of the glitter layer 32. Although an example larger than the difference (20 to 50%) in the point area ratio is shown, it is not limited to this. The former may be smaller than the latter.

(Production method)
A method for manufacturing the security paper 1 will be described.
The security paper 1 is manufactured by embedding a previously produced information carrying thread 3 on a paper material. The method for manufacturing the information carrying thread 3 is described in detail in, for example, Japanese Patent No. 4604209.
The security paper 1 can be manufactured according to the following steps.
(1) Formation of the glitter layer 32 The glitter layer 32 is formed on the entire upper surface of the base layer 31 by gravure printing with gloss ink.

(2) Formation of Transparent Gloss Layer 33 The glossy layer 32 is formed on the entire upper surface of the bright layer 32 by gravure printing with glossy ink or the like.
The printing steps (1) and (2) are not limited to gravure printing, and include, for example, wet offset printing, dry offset printing, letterpress printing, waterless planographic printing, flexographic printing, screen printing, intaglio printing, and the like. May be.
The information carrying thread 3 can be manufactured by (1) and (2).

(3) Making the information-carrying thread into paper The information-carrying thread 3 thus produced is made into paper stock liquid. This stock liquid is a member that becomes the base paper 2.
Thereafter, the security paper 1 can be manufactured by printing a pattern or the like on the base paper 2.

Note that various methods can be used as a method for drawing the information carrying thread 3.
For example, the method described in Japanese Patent Publication No. 5-85680 can be used as the drawing method. In this method, a convex portion having the same width as that of the information carrying thread 3 or a convex portion having a width wider than that of the information carrying thread 3 is provided on the paper net portion of the multi-cylinder paper machine. Then, the stock liquid is supplied in a state where the information carrying thread 3 is placed on the convex portion. According to this method, since the paper material liquid is supplied to both surfaces of the information carrying thread 3 at a position where there is no convex portion, the covering portion 5 is formed. On the other hand, at a position where the convex portion is present, the surface on one side of the information carrying thread 3 and the convex portion are in contact with each other, so that the exposed portion 4 is formed on the one surface side.

(Observation mode)
FIG. 4 is a diagram for explaining the appearance of the information carrying thread 3 of the first embodiment.
On the left side of FIG. 4, the appearance in the diffuse reflection area θ1 will be described.
On the right side of FIG. 4, the appearance in the regular reflection area θ2 (also referred to as a specular reflection area) will be described.
The exposed portion 4 of the information carrying thread 3 is exposed to the outside, while the covering portion 5 is covered with the base paper 2 (see FIG. 1). For this reason, the observer can visually recognize the information carrying thread 3 only from the exposed portion 4 when observing the security paper 1 from the upper surface side that is the observation side. In the following description, the exposed portion 4 of the information carrying thread 3 is also simply referred to as the information carrying thread 3.
The printed content of the transparent glossy layer 33 can be observed directly because the transparent glossy layer 33 is exposed, while the printed content of the glitter layer 32 can be observed through the transparent transparent glossy layer 33.
The observation mode of the information carrying thread 3 is described in detail in Japanese Patent No. 4604209.
In the example of FIG. 4, two diffuse reflection areas θ1 exist so as to sandwich the regular reflection area θ2. Note that the end of the diffuse reflection region θ1 and the end of the regular reflection region θ2 may overlap.

(How to see in the diffuse reflection area θ1)
FIG. 4 (A1): Bright layer 32
In the diffuse reflection region θ <b> 1, light from the light source is diffusely reflected on the upper surface of the bright layer 32. For this reason, the amount of reflected light reaching the viewpoint of the diffuse reflection area θ1 is smaller than that of the regular reflection area θ2.
When the amount of reflected light is small, the difference in the halftone dot area ratio between the A image portion 32a and the A background portion 32b is small, and thus the color tone difference (that is, the light / dark difference) between them can be easily discriminated visually. Thereby, the determination of the letter “A” is easy.

FIG. 4 (B1): Transparent gloss layer 33
On the other hand, since the transparent glossy layer 33 has high visible light transparency, it is difficult to determine the light / dark difference (that is, color tone difference) between the B image portion 33a and the B background portion 33b. Thereby, it is difficult to distinguish the letter “B”.

FIG. 4 (C1): Information carrying thread 3
As a result, when the entire information-carrying thread 3 is observed, it is easy to discriminate the character “A” expressed by the glitter layer 32, while it is difficult to discriminate the character B expressed by the transparent gloss layer 33. . Thereby, in the diffuse reflection area θ1, the observer can read the letter “A” but cannot read the letter “B”.

(How to see in regular reflection area θ2)
FIG. 4 (A2): Bright layer 32
In the regular reflection region θ <b> 2, the light reaching the observer's viewpoint is the light from the light source reflected directly by the glitter layer 32. For this reason, the amount of reflected light reaching the viewpoint of the regular reflection region θ2 is extremely large compared to the diffuse reflection region θ1.
When the amount of reflected light is extremely large, it is difficult to visually distinguish the color tone difference (that is, the light / dark difference) between the A image portion 32a and the A background portion 32b. As a result, it is difficult to determine the character “A”.

FIG. 4 (B2): transparent glossy layer 33
On the other hand, since the transparent gloss layer 33 is transparent, the reflected light amount of the transparent gloss layer 33 is smaller than the reflected light amount of the bright layer 32.
In such a case, the light / dark difference (that is, the color tone difference) due to the difference in the amount of reflected light between the B image portion 33a and the B background portion 33b can be easily visually determined. Thereby, the discrimination of the letter “B” is easy.

FIG. 4 (C2): Information carrying thread 3
As a result, when the entire information-carrying thread 3 is observed, it is difficult to discriminate the character “A” represented by the bright layer 32, while it is easy to discriminate the character B represented by the transparent gloss layer 33. . Thereby, in the diffuse reflection area θ1, the observer cannot read the letter “A” but can read the letter “B”.

In this way, the information carrying thread 3 has an observation mode in which only the character “A” can be discriminated and an observation mode in which only the character “B” can be discriminated by being able to discriminate characters according to the observation angle. For this reason, when the observed angle is changed, distinguishable characters are switched (see arrow # 1 in FIG. 4). Thereby, the security paper 1 can be authenticated.
Although the detailed description is omitted, the information carrying thread 3 can observe characters according to the light irradiation angle even when the light irradiation angle of the light source is changed in a state where the observation angle is constant. Also in this case, distinguishable characters are switched as the light irradiation angle of the light source is changed.

As described above, this embodiment has the following effects.
(1) The information-carrying thread 3 can determine the letter A of the bright layer 32 in the diffuse reflection area θ1, and can determine the letter B of the transparent gloss layer 33 in the regular reflection area θ2. The security paper 1 has a high security effect because the information carrying thread 3 is drawn on the base paper 2.
Further, the information carrying thread 3 includes an exposed portion 4 and a covering portion 5. Such a window-open security paper 1 is not easily counterfeited, so that the security effect can be further improved.
(2) The information-carrying thread 3 is low in cost because an expensive member such as a hologram thread is unnecessary. For this reason, the security paper 1 is low cost.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
Note that, in the following description and drawings, parts having the same functions as those of the first embodiment described above are given the same reference numerals or the same reference numerals at the end as appropriate, and redundant descriptions are omitted as appropriate.
FIG. 5 is a cross-sectional view (a diagram corresponding to FIG. 2A) near the exposed portion 4 of the security paper 201 according to the second embodiment.

In the information carrying thread 203, a base layer 231, a transparent glossy layer 233, and a bright layer 232 are laminated in this order from the upper side Z2 to the lower side Z1.
The base layer 231 is transparent.

The transparent glossy layer 233 having the B image portion and the B background portion (see FIG. 3B) is formed by printing transparent ink on the lower surface of the base layer 231. The print contents are reversed so that the front and back sides are reversed. That is, the B image portion and the B background portion of the first embodiment that are symmetric are printed on the lower surface of the base layer 231.
The glitter layer 232 having the A image portion and the A background portion (see FIG. 3A) is formed by printing glossy ink on the lower surface of the transparent glossy layer 233. The printed content of the glitter layer 232 is also reversed in the same manner as the transparent glossy layer 233.
The information carrying thread 203 is formed on the base paper 2 so that the base layer 231 is on the upper side Z2.

When the information carrying thread 203 of the security paper 201 is observed from the upper surface side, the printed content of the transparent glossy layer 233 can be visually recognized as light passes through the transparent base layer 231. Since the printed content is reversed and printed on the lower surface of the base layer 231, the normal image can be visually recognized when observed from the upper surface side.
Further, the printed content of the glitter layer 232 can be visually recognized by transmitting light through the transparent glossy layer 233 and the base layer 231 that are transparent. The printed content can be visually recognized in the same manner as the transparent glossy layer 233.
The observation mode of the information carrying thread 203 is the same as in the first embodiment. That is, the letter A can be discriminated in the diffuse reflection area θ1, while the letter B can be discriminated in the regular reflection area θ2 (see FIG. 4).

  As described above, the base layer 231 of the security paper 201 according to the present embodiment is laminated on the upper side Z2 of the transparent glossy layer 233 and the glitter layer 232. Thereby, the transparent glossy layer 233 and the bright layer 232 can be protected from contamination and the like.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
FIG. 6 is a cross-sectional view (a diagram corresponding to FIG. 2A) near the exposed portion 4 of the security paper 301 according to the third embodiment.
In the information carrying thread 303, a transparent glossy layer 333 is laminated on the upper side Z2 of the base layer 331, and a bright layer 332 is laminated on the lower side Z1 of the base layer 331.
The base layer 331 is transparent.

The transparent glossy layer 333 having the B image portion and the B background portion (see FIG. 3B) is formed by printing transparent ink on the upper surface of the base layer 331.
The glitter layer 332 having the A image portion and the A background portion (see FIG. 3A) is formed by printing glossy ink on the lower surface of the base layer 331. This print content is reversed.
The information carrying thread 303 is formed on the base paper 2 so that the transparent glossy layer 333 is on the upper side Z2.

When the information carrying thread 303 of the security paper 301 is observed from the upper surface side, the printed content of the glitter layer 332 is exposed and can be visually recognized.
The printed content of the glitter layer 332 can be visually recognized when light passes through the transparent base layer 331 and the transparent glossy layer 333. The printed image can be visually recognized as in the second embodiment.
The observation mode of the information carrying thread 303 is the same as in the first and second embodiments.

As described above, the base layer 331 of the security paper 301 according to the present embodiment is laminated on the upper side Z <b> 2 of the bright layer 332. Thereby, the bright layer 332 can be protected from contamination and the like.
Further, the printing order of the glitter layer 332 and the transparent gloss layer 333 is not limited. For this reason, it is convenient for manufacturing.
Further, a base layer 331 is laminated between the glitter layer 332 and the transparent gloss layer 333. Therefore, the glitter layer 332 and the transparent gloss layer 333 are not in contact with each other. As a result, even if the solvent contained in the ink of the glitter layer 332 and the solvent contained in the ink of the transparent glossy layer 333 are chemically affected, these inks can be used.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes are possible, and these are also within the technical scope of the present invention. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. The above-described embodiments can be used in appropriate combination, but detailed description thereof is omitted.

1,201,301 Security paper 2 Base paper 3,303,303 Information-carrying thread 4 Expressing part 5 Covering part 31,231,331 Base layer 32,232,332 Bright layer 32a A image part 32b A background part 33,233 , 333 Transparent glossy layer 33a B image part 33b B background part

Claims (6)

An image carrier for authenticity determination, wherein the upper surface side is an observation side, and includes a base layer, a bright layer having a first image, and a transparent glossy layer having a second image stacked above the bright layer; ,
A holding layer for holding the image carrier;
A laminate comprising: In the laminate according to claim 1,
Of the first image and the second image, having an observation mode capable of discriminating only the first image, and an observation mode capable of discriminating only the second image,
A laminate characterized by the following. In the laminate according to claim 1 or 2,
The image carrier is
Embedded in the retaining layer,
Having an exposed portion exposed from the holding layer and a covering portion covered with the holding layer when viewed from the observation side;
A laminate characterized by the following. In the laminate according to any one of claims 1 to 3,
The base layer is laminated below the glitter layer;
A laminate characterized by the following. In the laminate according to any one of claims 1 to 3,
The base layer is
Is transparent,
Laminated above the transparent gloss layer,
A laminate characterized by the following. In the laminate according to any one of claims 1 to 3,
The base layer is
Is transparent,
Laminated between the glitter layer and the transparent gloss layer;
A laminate characterized by the following.

Images