JP6231776B2 - Authenticity determination method for printed media using thermal transfer ink ribbon - Google Patents

Description

    The present invention relates to a thermal transfer ink ribbon, a printing medium, and a method for determining the authenticity of a printing medium using a thermal transfer ink ribbon. In particular, the present invention relates to a thermal transfer ink ribbon used for printing in a thermal transfer printer and the like. The present invention relates to a method for determining the authenticity of a print medium.

Conventionally, security labels (printed media) used for quality assurance, confidentiality and safety management of products, parts, and other various adherends are peeled off from the state of being attached to the adherend. In other words, a configuration has been adopted in which, for example, clearly removed marks remain or concealed character symbols appear.
However, such a configuration has a problem that the laminated structure becomes complicated and the cost is high.

Further, as another method for preventing forgery of security labels and determining authenticity, printing of predetermined management information is performed using ink that reacts with ultraviolet rays, infrared rays, electron beams or the like.
However, in the above security label, for example, a compound for authenticity determination is kneaded on the thermal transfer ink ribbon, and the portion printed by the thermal transfer ink ribbon is irradiated with ultraviolet rays to determine whether or not light is forged (authenticity). However, there is a problem that the cost must be taken into consideration because a special ultraviolet ray generation irradiation device and other instruments are required to confirm the luminescence reaction. Note that the fluorescent ink as the light emitting compound has a problem that it does not have light resistance.

    There are also security labels such as holography, but holography requires advanced plate making technology to construct the pattern, so it is costly and a special print surface for holograms is used for barcodes and other printed contents. There is a problem such as having to be provided separately.

JP 2001-105751 A

    The present invention has been considered in view of the above problems, and provides a thermal transfer ink ribbon that does not require a special method such as hologram or ultraviolet irradiation, a print medium, and a method for determining the authenticity of a print medium using a thermal transfer ink ribbon. This is the issue.

    In addition, the present invention can be superposed on a bar code or other printed content, and the thermal transfer ink ribbon capable of preventing forgery of the print medium (security label) or determining the authenticity without causing any trouble in the print operation itself. It is an object of the present invention to provide a method for determining the authenticity of a printing medium using a medium and a thermal transfer ink ribbon.

    Another object of the present invention is to provide a thermal transfer ink ribbon, a print medium, and a method for determining the authenticity of a print medium using the thermal transfer ink ribbon that are easy to use and can be manufactured at low cost.

    In other words, the present invention focuses on the fact that the authenticity determination design printing is performed on the ink layer by the authenticity determination design, and the authenticity determination design is left on the base film layer side by thermal transfer of the ink layer to the printing medium. The first invention has a base film layer and an ink layer laminated on the surface side of the base film layer, and the ink layer is thermally transferred to a printing medium by heating from the back side of the base film layer. A thermal transfer ink ribbon to be formed, wherein an authenticity determination design print layer is formed between the base film layer and the ink layer, and the ink layer is thermally transferred to the print medium. Thus, the thermal transfer ink, wherein the design printing layer for authenticity determination can remain on the base film layer side Is Bonn.

    According to a second aspect of the present invention, there is provided a thermal transfer ink ribbon having a base film layer and an ink layer laminated on the surface side of the base film layer, to which the ink layer is thermally transferred by heating from the back side of the base film layer. A print medium, wherein the thermal transfer ink ribbon is formed with an authenticity determination design print layer between the base film layer and the ink layer, and the ink layer is applied to the print medium. The print content layer is formed by superimposing the concave design for authenticity determination reversed with respect to the design for authenticity determination by leaving the design print layer for authenticity determination on the base film layer side by thermal transfer. Is a printing medium characterized by the above.

    A third invention has a base film layer and an ink layer laminated on the front surface side of the base film layer, and heat-transfers the ink layer to a printing medium by heating from the back surface side of the base film layer. A method for determining the authenticity of a printing medium using a thermal transfer ink ribbon, wherein a design printing layer for authenticity determination is formed on the ink layer by a design for authenticity determination, and the ink layer is applied to the printing medium. A thermal transfer ink characterized in that the authenticity of the print medium is determined by a concave design for authenticity determination formed by reversing the authenticity determination design in the printed content layer on the print medium by thermal transfer. This is a method for determining the authenticity of a printing medium using a ribbon.

    It is possible to form a concave design for authenticity determination that is inverted with respect to the design for authenticity determination on the print content layer formed on the print target medium by thermal transfer of the ink layer to the print target medium.

    The thickness of the design printing layer for authenticity determination on the ink layer can be made thinner than the thickness of the ink layer.

    The authenticity determination design print layer on the ink layer by the authenticity determination design can be formed by gravure printing.

    The authenticity determination design print layer may be distinguishable from the base film layer.

    The gloss of the concave design for authenticity determination in the print content layer can be made different from the gloss in the surface region other than the concave design for authenticity determination in the print content layer.

    In the method of determining the authenticity of the thermal transfer ink ribbon, the print medium, and the print medium using the thermal transfer ink ribbon according to the present invention, the authenticity determination design (authentication determination design print layer) applied to the ink layer remains on the base film layer side. Since the ink layer is transferred to the print medium by thermal transfer printing, the concave design for authenticity determination on the surface of the print medium can be made visible from the difference in glossiness. Depending on the presence or absence of the concave design, it is possible to determine the authenticity of the contents printed on the printing medium (for example, security label) by the thermal transfer ink ribbon, and to contribute to the prevention of forgery of the security label.

    In particular, according to the thermal transfer ink ribbon of the first invention, an authenticity determination design print layer is formed on the ink layer by an authenticity determination design, and the authenticity determination design is formed by thermal transfer of the ink layer to a printing medium. Since it is possible to remain on the layer side, it is possible to easily determine the authenticity by confirming the concave design for authenticity determination in a state where the authenticity determination design is reversed.

    In particular, according to the printing medium of the second invention, to the printing medium of the ink layer in the thermal transfer ink ribbon in which the design printing layer for authenticity determination is formed between the base film layer and the ink layer. The printed content layer is formed on the print medium by superimposing the indentation design for authenticity determination, which is reversed with respect to the design for authenticity determination, so that the authenticity of the to-be-printed medium itself can be determined by the indentation design Can be displayed.

    In particular, according to the method for determining the authenticity of the printing medium using the thermal transfer ink ribbon according to the third invention, the design printing layer for authenticity determination based on the authenticity determination design is formed on the ink layer, and the ink layer is applied to the printing medium. The authenticity of the printed medium is judged by the concave design for authenticity judgment formed by reversing the authenticity judgment design in the print content layer on the print medium by thermal transfer, which is particularly expensive. The authenticity of the printing medium can be determined easily and at low cost without using a simple hologram or ultraviolet light.

It is an expanded sectional view of the thermal transfer ink ribbon 1 by the Example of this invention. FIG. 6 is an enlarged cross-sectional view showing an example of printing performed on the label 6 (print medium) from the thermal transfer ink ribbon 1. Similarly, an authenticity determination design print layer 5 (for example, an authenticity determination design 5A inverted with respect to the normal image “ABC”) and a print content layer 9 after printing on the label 6 (for example, the thermal transfer ink ribbon 1) , Barcode) are shown in an overlapping manner, and are explanatory views viewed from the ink layer 4 side. In the same manner, the authenticity determination concave design 5B formed on the label 6 together with the transfer of the print content layer 9 and the print content layer 9 (for example, a bar code) after printing on the label 6 are shown superimposed. It is explanatory drawing seen from the top.

    In the present invention, the authenticity determination design print layer is formed on the ink layer by the authenticity determination design, and the authenticity determination design remains on the base film layer side by thermal transfer of the ink layer to the printing medium. Realizes a thermal transfer ink ribbon, a print medium, and a print medium authenticity determination method using a thermal transfer ink ribbon that can be performed at a low cost to prevent counterfeiting and authenticity of a print medium such as a security label. .

Next, a method for determining the authenticity of the print medium using the thermal transfer ink ribbon 1, the print medium (for example, a security label such as the label 6) and the heat transfer ink ribbon 1 according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an enlarged cross-sectional view of a thermal transfer ink ribbon 1. The thermal transfer ink ribbon 1 includes a base film layer 2, a backcoat layer 3 laminated on the back side of the base film layer 2, and a base film layer 2. It has the ink layer 4 laminated | stacked on the surface side, and the design printing layer 5 for an authenticity determination.

    The thermal transfer ink ribbon 1 is sandwiched between a thermal head 7 and a platen roller 8 together with a printing medium (label 6) at a predetermined printing pressure, and print data from the back coat layer 3 side by the heating element 7A of the thermal head 7 is printed. The ink layer 4 is thermally transferred to the label 6 in accordance with the print data by transferring the thermal transfer ink ribbon 1 and the label 6 by the rotational driving of the platen roller 8 along with the heating based on the ink.

The authenticity determination design printing layer 5 is based on an arbitrary authenticity determination design 5A (for example, a reverse image of “ABC”, which will be described later with reference to FIGS. 3 and 4), for example, gravure printing (intaglio printing). ) Is formed between the base film layer 2 and the ink layer 4 by an arbitrary type of ink, and the authenticity determination design 5A is transferred to the label 6 by thermal transfer of the ink layer 4 to the label 6. It is possible to remain on the side.
As the authenticity determination design 5A, a character, a figure, or any other design can be adopted regardless of the presence or absence of regularity.
In addition, the thickness of the design printing layer 5 for authenticity determination is made thinner than the thickness of the ink layer 4.
Further, it is desirable that the authenticity determination design print layer 5 be distinguishable from the base film layer 2.

    FIG. 2 is an enlarged cross-sectional view showing an example of printing performed on the label 6 (print medium) from the thermal transfer ink ribbon 1, and a print content layer on the label 6 by thermal transfer of the ink layer 4 to the label 6. 9, it is possible to form an authenticity determination concave design 5B that is inverted with respect to the authenticity determination design 5A.

    For the authenticity determination design printed layer 5, either one of the authenticity determination design 5A and the authenticity determination concave design 5B may be a normal image, and the other may be a reverse image. It seems that it is easier to find a forged print medium (label) when the design 5B is a normal image.

    For example, FIG. 3 shows the printed contents of the thermal transfer ink ribbon 1 after printing on the authenticity determination design printing layer 5 (for example, the authenticity determination design 5A reversed with respect to the normal image “ABC”) and the label 6. FIG. 4 is an explanatory diagram viewed from the ink layer 4 side, showing the layer 9 (for example, a barcode) superimposed, and FIG. 4 shows a concave design 5B for authenticity determination formed on the label 6 together with the transfer of the print content layer 9. FIG. 7 is an explanatory diagram showing a label 6 as viewed from above, with a print content layer 9 (for example, a bar code) printed on the label 6 superimposed thereon.

As shown in FIGS. 3 and 4, the heat transfer from the ink layer 4 to the label 6 of the print content layer 9 does not interfere with the printing operation and the formation of the print content layer 9 itself, and the print content layer on the label 6 is not affected. 9 can be distinguished from a print medium (fridge) in which the authenticity determination concave design 5B is not formed by the authenticity determination concave design 5B (FIG. 4) formed by inverting the authenticity determination design 5A. The authenticity of label 6 can be determined.
Of course, the printed content layer 9 such as a barcode has a difference in glossiness, but it can be optically read by a barcode scanner (not shown).

That is, the gloss of the authenticity determination concave design 5B in the print content layer 9 indicates that the surface area 9A other than the authenticity determination concave design 5B in the print content layer 9 is not deeper or protrudes from the authenticity determination concave design 5B. Since the degree is different, it is different from the glossiness in the other surface region 9A. Therefore, by changing the viewing angle of the label 6, the authenticity determining concave design 5B (FIG. 4) on the label 6 can be visually recognized.
If the concave design 5B for authenticity determination is visible on the label 6, the label 6 is determined to be authentic, and if the concave design 5B for authenticity determination cannot be confirmed on the label 6, the label is It can be determined that

    In general, since the base film layer 2 and the back coat layer 3 are extremely thin, the design printing layer 5 for authenticity determination can be distinguished from the base film layer 2 as described above. If the presence of the design printing layer 5 for authenticity determination can be confirmed through the base film layer 2 and the back coat layer 3, and the thermal transfer ink ribbon 1 printed on the label 6 can be obtained and confirmed, The authenticity of the label 6 can also be determined from the design printing layer 5 for authenticity determination in the thermal transfer ink ribbon 1.

    Thus, forgery prevention and authenticity determination of the label 6 and other printing media can be performed by a simple printing method by general gravure printing without using expensive means such as a hologram and an ultraviolet light.

1 Thermal transfer ink ribbon (Example, Fig. 1)
2 Base film layer 3 Backcoat layer 4 Ink layer 5 Design printing layer for authenticity judgment 5A Design for authenticity judgment Design for authenticity judgment of printed layer 5 (FIG. 3)
5B Authenticity Judgment Design Reversed to Authenticity Judgment Design 5A (Figure 4)
6 Label (Printed medium, Examples, Fig. 2 and Fig. 4)
7 Thermal Head 7A Heating Element of Thermal Head 7 8 Platen Roller 9 Print Content Layer (FIGS. 2, 3, and 4)
9A Surface area other than the concave design 5B for authenticity determination in the print content layer 9

Claims (1)

A base film layer;
Anda ink layer laminated on the surface side of the base film layer,
The base film layer and the in-click layer by heating from the back side of a authenticity determination method of the print medium by the thermal transfer ink ribbon for printing the print content layer containing the bar code by thermally transferred to the print medium,
While forming a design printing layer for authenticity determination with characters and figures as a design for authenticity determination between the base film layer and the ink layer,
When the ink layer is thermally transferred to the print medium, the design printing layer for authenticity determination can be left on the base film layer side,
When the ink layer is thermally transferred to the print medium, the print content layer including the bar code thermally transferred to the print medium is formed by superimposing an authenticity determination concave design reversed with respect to the authenticity determination design. And
Due to the difference between the gloss of the concave design for authenticity determination of the print content layer and the gloss in the surface region other than the concave design for authenticity determination of the print content layer, the concave design for authenticity determination is formed on the print content layer. A method for determining the authenticity of a print medium using a thermal transfer ink ribbon , wherein the authenticity of the print medium is determined by making it visible .

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