JP7414613B2 - Information display medium for authenticity determination - Google Patents

Description

The present invention relates to an information display medium for determining authenticity, which includes information for determining authenticity by changing color by applying heat at a specific temperature.

In recent years, various types of cards whose authenticity can be determined have become known. For such cards, information including not only identification information unique to the owner but also a predetermined pattern is used as information or pattern for determining authenticity, and it is possible to simplify and easily determine the authenticity of this information. desired.

2. Description of the Related Art Conventionally, there are sheets and the like for determining authenticity that are known, for example, from Patent Document 1 and the like. Patent Document 1 relates to a safety protection sheet, etc., in which a fluorescent material layer is formed using fluorescent ink on a first base material, a second base material is provided on the fluorescent material layer, and the second base material is A sheet having a part from which a base material such as a pattern has been removed is formed by laser processing, and by irradiating the part from which the base material has been removed with light, the fluorescent substance layer emits fluorescence and the image of the part from which the base material has been removed is recognized. It is stated that the authenticity is determined. On the other hand, although it is not used for determining authenticity, there is a technology known in Patent Documents 2 and 3 that reversibly changes the color between a colored state and a transparent state depending on the temperature using temperature-indicating ink. However, various settings are known, for example, between 10° C. and 50° C.

Patent No. 4264776 Japanese Patent Application Publication No. 2018-166956 Patent No. 4570968

However, in Patent Document 1, the object to be authenticated is a fluorescent material layer using fluorescent ink, and special equipment such as an ultraviolet irradiator (black light) is required to cause the fluorescent material layer to emit fluorescence. There is a problem in that it is not possible to easily determine authenticity.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an information display medium for authenticity determination that can simply and easily determine the authenticity determination information formed on the medium.

In order to solve the above problem, the invention according to claim 1 provides an information display medium for authenticity determination, which includes authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity. A layer on which a temperature-indicating ink of a first specific color different from the color of the base material is applied, a first temperature-indicating ink layer that becomes transparent in response to application of heat at a specific temperature, and a side of the first temperature-indicating ink layer. The color of the first temperature ink layer is the same as the color of the first temperature ink layer, and the color of the first temperature ink layer is different from the color of the base material and includes the first specific color of the first temperature ink layer. The authenticity determination information is formed in a form in which the first temperature-indicating ink layer is engraved at the position, and when the exposed first temperature-indicating ink layer is made transparent by applying heat, the authenticity determination information is A printing layer that can be recognized as the color of the base material is configured.

In the invention of claim 2, there is provided an information display medium for authenticity determination, comprising a base material and a base material printed in a predetermined color on the base material. and a first temperature-indicating ink of a first specific color different from a predetermined color of the base printing layer, which becomes transparent in response to heat application at a specific temperature, is coated on the base printing layer. information that is a layer provided on the temperature-indicating ink layer and the first temperature-indicating ink layer side, includes a color different from the predetermined color of the base printing layer, and includes a first specific color of the first temperature-indicating ink layer; From the printed state, the authenticity determination information is engraved up to the first temperature ink layer at a position different from the predetermined color of the base printing and the same color as the first temperature ink layer. and a printing layer in which the authenticity determination information can be recognized as the color of the base printing layer when the first temperature-indicating ink layer is formed and made transparent by applying heat to the exposed first temperature-indicating ink layer.

In the invention of claim 3, there is provided an information display medium for authenticity determination, which includes authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity, and the medium includes a base material, and a color of the base material on the base material. A layer coated with temperature-indicating ink of a second specific color different from the temperature-indicating ink layer, which becomes transparent in response to application of heat at a specific temperature, and a layer provided on the side of the second temperature-indicating ink layer. , from a state in which information including the color of the base material and a color different from the second specific color of the second temperature-indicating ink layer is printed, information that is the same color as the color of the base material and that is different from the second specific color of the second temperature-indicating ink layer is printed. The authenticity determination information is formed in a form in which the second temperature-indicating ink layer is engraved at a position of a color different from that of the second temperature-indicating ink layer, and the exposed second temperature-indicating ink layer is made transparent by applying heat. and a printing layer that allows the authenticity determination information to be recognized as the color of the base printing layer when the authentication information is applied.

In the invention of claim 4, there is provided an information display medium for authenticity determination, comprising a base material and a base material printed in a predetermined color on the base material. a base printing layer; and a second temperature indicating ink, which is a layer on which a temperature indicating ink of a second specific color different from the color of the base printing layer is applied, and which becomes transparent in response to heat application at a specific temperature. layer, and a layer provided on the second temperature-indicating ink layer side, from a state in which information is printed that includes the color of the base printing layer and a color different from the color of the second temperature-indicating ink layer. , forming the authenticity determination information in a form in which the second temperature-indicating ink layer is engraved at a position that is the same color as the base printing layer and different from the color of the second temperature-indicating ink layer; The printing layer includes a printing layer that allows the authenticity determination information to be recognized as the color of the base printing layer when the exposed second temperature-indicating ink layer is made transparent by applying heat.

According to the inventions of claims 1 and 2, the first temperature-indicating ink layer, which becomes transparent in response to application of heat at a specific temperature, is formed by coating a base material with a temperature-indicating ink of a first specific color different from the color of the base material. is provided, a printing layer is provided on the first temperature-indicating ink layer side, and the printing layer is printed with information that is different in color from the base material and includes a first specific color of the first temperature-indicating ink layer. Authenticity determination information is formed by etching up to the first temperature-indicating ink layer at a position of the same color as the first temperature-indicating ink layer, and by applying heat to the exposed first temperature-indicating ink layer. The authentication information is configured so that it can be seen as the color of the base material when it is made transparent, and the base print layer printed in a predetermined color on the base material has a color different from the predetermined color of the base print layer. A first temperature-indicating ink layer coated with a temperature-indicating ink of a first specific color that becomes transparent in response to application of heat at a specific temperature is provided, a printing layer is provided on the first temperature-indicating ink layer side, and the printing layer is From the state in which the information including the predetermined color of the base printing layer and the first specific color of the first temperature ink layer is printed, the information that is different from the predetermined color of the base print layer and the first temperature ink layer is printed. Authenticity determination information is formed in a form that is engraved up to the first temperature-indicating ink layer at a position of the same color as the layer, and when the first temperature-indicating ink layer is made transparent by applying heat to the exposed first temperature-indicating ink layer. By configuring the authenticity determination information to be recognized as the color of the base printing layer, when the first temperature-indicating ink layer is in a colored state, the authenticity determination information in the engraved state is the same color as the printing layer and does not exist. By applying heat to a temperature higher than daily temperature and making it transparent without using special equipment, the authenticity determination information can be easily seen, making it simple and easy to determine authenticity. It is something that can be done.

According to the invention of claims 3 and 4, the second temperature ink layer is formed by coating a base material with a second specific temperature ink having a second specific color different from the color of the base material and becomes transparent in response to application of heat at a specific temperature. is provided, and a printing layer is provided on the second temperature-indicating ink layer side, and the printing layer contains information that includes the same color as the color of the base material and a different color from the second specific color of the second temperature-indicating ink layer. Authenticity determination information is formed in the form in which the second temperature-indicating ink layer is engraved in the same color as the base material and at a position different from the color of the second temperature-indicating ink layer from the printed state. The authentication information is made visible as the color of the base material when the exposed second temperature-indicating ink layer is made transparent by applying heat, and the second temperature-indicating ink layer is printed in a predetermined color on the base material. a second temperature-indicating ink layer, which is coated with a temperature-indicating ink that becomes transparent in response to heat application at a specific temperature in a second specific color different from the color of the base printing layer; is provided, and a printing layer is provided on the second temperature-indicating ink layer side, and the printing layer includes a predetermined color of the base printing layer and a color different from the second specific color of the second temperature-indicating ink layer. Authenticity is determined based on the information printed on the second temperature ink layer in a position that is the same color as the base printing layer and different from the color of the second temperature ink layer. By forming information and making it transparent by applying heat to the exposed second temperature ink layer, the authenticity determination information can be seen as the color of the base printing layer. When the layer is colored, the authenticity information can be seen, and by applying heat to a temperature higher than daily temperature without using special equipment to make it transparent, the engraved authenticity information can be printed. Since the layer has the same color as the layer, it can be seen as if it does not exist, so that the authenticity can be easily and easily determined.

1 is a configuration diagram of a first embodiment of an information display medium for authenticity determination according to the present invention; FIG. FIG. 2 is an exploded configuration diagram of the information display medium for authenticity determination shown in FIG. 1; FIG. 2 is an explanatory diagram regarding manufacturing of the information display medium for authenticity determination shown in FIG. 1; FIG. 2 is an explanatory diagram of the authenticity determination of the information display medium for authenticity determination shown in FIG. 1; It is another block diagram of 1st Embodiment of the information display medium for authenticity determination based on this invention. It is a block diagram of 2nd Embodiment of the information display medium for authenticity determination based on this invention. FIG. 7 is an explanatory diagram of the authenticity determination of the information display medium for authenticity determination shown in FIG. 6;

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a configuration diagram of a first embodiment of an information display medium for determining authenticity according to the present invention, and FIG. 2 shows an exploded configuration diagram of the information display medium for determining authenticity shown in FIG. 1. The information display medium 11 for authenticity determination shown in FIGS. 1(A), (B) and FIG. A printed layer 15 is provided with a layer 14A and a concealing layer 14B interposed therebetween, and authenticity determination information 16 is formed in the form of a puncture from the printed layer 15 to the first temperature-indicating ink layer 13A. .

The base material 12 has a thickness of, for example, 560 μm and is mainly composed of an entirely opaque, for example, white resin. For example, polyethylene terephthalate (PET) is used, but other materials include polyvinyl chloride (PVC), polyethylene It is also possible to use known opaque resins such as glycol terephthalate (PET-G) and polycarbonate (PC).

The first temperature-indicating ink layer 13A is a layer coated with a temperature-indicating ink of a first specific color (for example, blue) different from the color of the base material 12, and is coated at a specific temperature (for example, blue with a discoloration temperature of 45 to 50%). It becomes transparent in response to the application of heat (defined as ℃). The temperature-indicating ink is publicly known, and there are known inks with various colors and discoloration temperatures.

The intermediate protective member layer 14A is formed of, for example, a transparent PET member and has a thickness of 5 to 10 μm, and the concealing layer 14B is a layer printed with, for example, opaque white ink and is formed, for example, of a thickness of 2 μm. Ru. The roles of the intermediate protection member layer 14A and the concealing layer 14B will be described later.

The printing layer 15 is printed with information that is different from the color of the base material 12 and includes the first specific color (for example, blue) of the first temperature-indicating ink layer 13A. Authenticity determination information 16 is formed in a position having the same color as the first temperature-indicating ink layer 13A.

In this state, as shown in FIG. 1(A), the portion of the printing layer 15 where the authenticity determination information 16 is formed and the same portion of the intermediate protection member layer 14A and the concealing layer 14B are in a state of being engraved. When the first temperature-indicating ink layer 13A is not present, the color (white) of the surface of the base material 12 is recognized as the authenticity determination information 16, and part of the information on the printing layer 15 is missing. , the entire part of the first temperature-indicating ink layer 13A having the same color as the color of the missing part where the information was engraved to form the authenticity determination information 16 can be seen as a whole, The authenticity determination information 16 itself is not recognized at first glance.

Here, FIG. 3 shows an explanatory diagram regarding the manufacture of the information display medium for authenticity determination shown in FIG. 1. First, as shown in FIG. 3(A), a first temperature-indicating ink layer 13A is formed by applying, for example, a blue temperature-indicating ink having a discoloration temperature of, for example, 45° C. onto one side of a white base material 12. Ru. As shown in FIG. 3(B), an intermediate protection member layer 14A made of, for example, a transparent PET member is adhered to the entire surface of the first temperature-indicating ink layer 13A using, for example, an adhesive. On the intermediate protection member layer 14A, as shown in FIG. 3(C), a concealing layer 14B is printed, for example, on the entire surface with white printing ink.

As shown in FIG. 3(D), information is printed on the concealing layer 14B, which is different from the color of the base material 12 and includes the first specific color (for example, blue) of the first temperature-indicating ink layer 13A. A printing layer 15 is printed with ink. The printed layer 15 in this state becomes the source on which the authenticity determination information 16 is formed.

Then, as shown in FIG. 3(E), the laser beam 21 is applied to a desired position on the printing layer 15 and has the same color as the first temperature-indicating ink layer 13A. By irradiating according to the shape of the determination information 16, the authenticity determination information 16 in the form of a puncture is formed, and the information display medium 11 for authenticity determination shown in FIG. 1 is manufactured.

In addition, although this embodiment shows the case where the shape of the authenticity determination information 16 is laser-processed and engraved, only the edge of the shape of the authenticity determination information 16 may be engraved, and the authenticity determination information 16 may be This can make it more difficult to distinguish that it is formed by engraving.

By the way, when forming the authenticity determination information 16 by laser processing, since the thickness of the printed layer 15 is 2 μm, laser processing for this thickness has errors and requires advanced adjustment. However, by interposing the intermediate protective member layer 14A, even if a small amount of the transparent intermediate protective member layer 14A remains after laser processing, the corresponding portion of the first temperature-indicating ink layer 13A can be seen. It is possible to easily adjust the

Therefore, FIG. 4 shows an explanatory diagram for determining the authenticity of the information display medium for authenticity determination shown in FIG. 1. In the information display medium 11 for authenticity determination, under normal illumination light or natural light, as shown in the upper rows of FIGS. The color blends in with the surrounding color, and is difficult to recognize at first glance, as it can only be recognized by looking at the unevenness or by feeling it with the hand. Note that, for example, if a transparent protective layer is provided on the printed layer 15, the unevenness can be visually recognized.

Therefore, as shown in FIG. 4(A), when heated with the imprint heating 31 at a temperature of 45° C. or higher as a color change temperature, the first temperature-indicating ink layer 13A becomes transparent as shown in the lower part of FIG. 4(B). The color of the underlying base material 12 appears, and the shape of the authenticity determination information 16 can be seen. As means for heating at the above-mentioned discoloration temperature, it is possible to determine the authenticity of hot drinks, for example, and also by frictional heat caused by rubbing with fingers, etc., and as in Patent Document 1 mentioned above, a black light Authenticity can be determined without using special equipment that outputs specific light such as.

That is, if the authenticity determination information 16 appears, the information display medium 11 for authenticity determination is determined to be genuine, and if it does not appear, it is determined to be a fake. The concealing layer 14B is for preventing portions other than the authenticity determination information 16 from appearing as the color of the base material 12 when there is an unprinted area in the portion where the printing layer 15 is formed.

Next, FIG. 5 shows another configuration diagram of the first embodiment of the information display medium for authenticity determination according to the present invention. The information display medium 11 for authenticity determination shown in FIG. 5(A) is provided with a base print layer 17A of a predetermined color on a base material 12, and coated with temperature-indicating ink of a first specific color different from the predetermined color of the base print layer 17A. A first temperature-indicating ink layer 13A that becomes transparent in response to application of heat at a specific temperature is provided. In this case, the printing layer 15 is printed with information that includes a color different from the predetermined color of the base printing layer 17A and the first specific color (for example, blue) of the first temperature-indicating ink layer 13A. Authenticity determination information 16 is formed in a position different from the predetermined color of the base printing layer 17A and in the same color as the first temperature-indicating ink layer 13A, in the form of being engraved up to the first temperature-indicating ink layer 13A. It is.

As shown in FIG. 5(B), when the above-described information display medium 11 for authenticity determination is heated with the imprint heating 31 at a temperature of 45° C. or higher as a discoloration temperature, the authenticity determination information 16 changes to the color shown in FIG. 1(A). As shown in FIG. 5C, the first temperature-indicating ink layer 13A becomes transparent and the color of the base printing layer 17A appears, which changes the shape of the authenticity determination information 16. will be observed.

In this way, when the first temperature-indicating ink layer 13A is in a blue colored state, the authenticity determination information 16 in the engraved state is the same color as the printing layer 15, and can be seen as if it does not exist, using special equipment. By applying heat to a temperature higher than the daily temperature to make it transparent, the authenticity determination information 16 can be easily recognized as the color of the base printing layer 17A, and the authenticity can be determined simply and easily. It is possible.

Next, FIG. 6 shows a configuration diagram of a second embodiment of the information display medium for authenticity determination according to the present invention. The information display medium 11 for authenticity determination shown in FIGS. 6(A) and 6(B) is provided with a base print layer 17B printed in a predetermined color on the base material 12, and the base print layer 17B is provided on the base print layer 17B. A second temperature-indicating ink layer 13B is coated with a temperature-indicating ink that becomes transparent in response to the application of heat at a specific temperature (color change temperature is, for example, 45° C.) in a second specific color (for example, red) different from the color of A printed layer 15 is provided with an intermediate protective member layer 14A and a concealing layer 14B interposed therebetween.

The printing layer 15 is a source on which information including the predetermined color of the base printing layer 17B and a color different from the color (for example, red) of the second temperature-indicating ink layer 13B is printed to form the authenticity determination information 16. becomes. From this state, the second temperature-indicating ink layer 13B is etched at the position of the same color as the base printing layer 17B and different from the color (for example, red) of the second temperature-indicating ink layer 13B. Authenticity determination information 16 is formed to form the authenticity determination information display medium 11. That is, the authenticity determination information 16 is in a state where its shape can be recognized in a color different from the surrounding color of the printed layer 15, for example, red.

Therefore, FIG. 7 shows an explanatory diagram for determining the authenticity of the information display medium for authenticity determination shown in FIG. 6. Under normal illumination light or natural light, the authenticity determination information 16 of the information display medium 11 for authentication is visible as the color (for example, red) of the second temperature-indicating ink layer 13B, as shown in the upper part of FIG. 7(B). be done.

Therefore, as shown in FIG. 7(A), when heated with the imprint heating 31 having a color change temperature of 45° C. or higher, for example, the second temperature-indicating ink layer 13B becomes transparent as shown in the lower part of FIG. 7(B). The color becomes the color of the base printing layer 17B and is assimilated with the color of the portion of the printing layer 15 where the authenticity determination information 16 is formed, so that it is recognized as if it does not exist. That is, if the authenticity determination information 16 appears to have disappeared, the information display medium 11 for authenticity determination is determined to be genuine, and if the authenticity determination information 16 is observed as it is, it is determined to be a fake. Therefore, the authenticity can be determined without using any special equipment.

Although not shown, a configuration may be adopted in which the base printing layer 17B is not provided. In this case, it is a layer in which a temperature-indicating ink of a second specific color different from the color of the base material 12 is coated on the base material 12, and the second temperature-indicating ink becomes transparent in response to heat application at a specific temperature (for example, 45° C.). A temperature-indicating ink layer 13B is provided, and a printing layer 15 is provided on the second temperature-indicating ink layer 13B via an intermediate protective member layer 14A and a concealing layer 14B, and the printing layer 15 has the same color as the base material 12. and a color different from the second specific color (for example, red) of the second temperature-indicating ink layer 13B. Authenticity determination information 16 is formed in a position different from the color of the temperature-indicating ink layer 13B in a form that is engraved up to the second temperature-indicating ink layer 13B.

In this way, when the second temperature-indicating ink layer 13B is in a red colored state, the authenticity determination information 16 in the punched state can be seen as being different from the color of the printed layer 15, and it can be read at temperatures above the daily temperature without using special equipment. By applying heat to make it transparent, the authenticity determination information 16 is the same color as the printed layer 15 and can be seen as if it does not exist, making it simple and easy to determine authenticity. It is possible.

By the way, although each of the above embodiments has been shown as a configuration on one side of the base material 12, the same configuration may be provided on the other side, which can make counterfeiting of the medium more difficult.

The information display medium for determining authenticity of the present invention can be used in industries such as manufacturing, selling, and using information display media used for determining authenticity.

11 Information display medium for authenticity determination 12 Base material 13A First temperature-indicating ink layer 13B Second temperature-indicating ink layer 14A Intermediate protective member layer 14B Hiding layer 15 Printing layer 16 Authenticity determination information 17A, 17B Base printing layer 21 Laser light 31 Imprint heating

Claims (4)

An information display medium for authenticity determination, comprising authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity,
base material and
a first temperature-indicating ink layer that is a layer coated with a temperature-indicating ink of a first specific color different from the color of the base material on the base material, and becomes transparent in response to application of heat at a specific temperature;
It is a layer provided on the side of the first temperature-indicating ink layer, and is printed with information that is different from the color of the base material and includes the first specific color of the first temperature-indicating ink layer. Forming the authenticity determination information in a form in which the first temperature-indicating ink layer is engraved in an area printed with the same color as the temperature-indicating ink layer, and applying heat to the exposed first temperature-indicating ink layer. a printed layer that allows the authenticity determination information to be seen as the color of the base material when made transparent;
An information display medium for determining authenticity, comprising: An information display medium for authenticity determination, comprising authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity,
base material and
a base printing layer printed in a predetermined color on the base material;
A first temperature-indicating ink layer, which is a layer in which a temperature-indicating ink of a first specific color different from a predetermined color of the base-printing layer is coated on the base printing layer, and becomes transparent in response to heat application at a specific temperature;
A state in which information is printed, which is a layer provided on the side of the first temperature-indicating ink layer, which includes a color different from the predetermined color of the base printing layer, and includes the first specific color of the first temperature-indicating ink layer. Forming the authenticity determination information in a form in which the first temperature-indicating ink layer is engraved in an area printed with a color different from the predetermined color of the base printing and the same as the color of the first temperature-indicating ink layer. a printing layer that allows the authenticity determination information to be recognized as the color of the base printing layer when the exposed first temperature-indicating ink layer is made transparent by applying heat;
An information display medium for determining authenticity, comprising: An information display medium for authenticity determination, comprising authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity,
base material and
a second temperature-indicating ink layer, which is a layer coated on the base material with a temperature-indicating ink of a second specific color different from the color of the base material, and becomes transparent in response to application of heat at a specific temperature;
A layer provided on the second temperature-indicating ink layer side, in which information including the color of the base material and a color different from the second specific color of the second temperature-indicating ink layer is printed, Forming and displaying the authenticity determination information in a form that is engraved up to the second temperature-indicating ink layer at a position of a color that is the same as the color of the base material and different from the color of the second temperature-indicating ink layer; a printing layer that allows the authenticity determination information to be recognized as the color of the base material when the second temperature-indicating ink layer is made transparent by applying heat;
An information display medium for determining authenticity, comprising: An information display medium for authenticity determination, comprising authenticity determination information that changes color by applying heat at a specific temperature to determine authenticity,
base material and
a base printing layer printed in a predetermined color on the base material;
A second temperature-indicating ink layer, which is a layer in which a temperature-indicating ink of a second specific color different from the color of the base-printing layer is coated on the base-printing layer, and becomes transparent in response to heat application at a specific temperature;
A layer provided on the second temperature-indicating ink layer side, from a state in which information is printed that includes the color of the base printing layer and a color different from the second specific color of the second temperature-indicating ink layer. , forming the authenticity determination information in a form in which the second temperature-indicating ink layer is engraved at a position that is the same color as the base printing layer and different from the color of the second temperature-indicating ink layer; a printing layer that allows the authenticity determination information to be recognized as the color of the base printing layer when the exposed second temperature-indicating ink layer is made transparent by applying heat;
An information display medium for determining authenticity, comprising:

Images