JP6427239B2 - Thermal transfer ink ribbon and method for producing print medium with authenticity determination function - Google Patents

Description

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

Conventionally, the security label (printing medium) used for quality assurance, confidentiality and safety management of products, parts and other various objects to be attached is peeled from the state where it is attached to the object to be attached In addition, a configuration is adopted in which a trace of peeling is clearly left or a hidden character symbol or the like appears.
However, such a configuration has a problem that the laminated structure is complicated and expensive.

Further, as another method for preventing forgery of a security label or for determining authenticity, printing predetermined management information using an ink that reacts to ultraviolet light, infrared light, an electron beam or the like is performed.
However, in the above-mentioned security label, for example, a thermal transfer ink ribbon is compounded with a compound for authenticity determination, and the portion printed with the thermal transfer ink ribbon is irradiated with ultraviolet light to determine whether or not light emission is forged (authentic) However, there is the problem that the cost must also be taken into consideration, since a special UV-generating irradiation device or other equipment is required to confirm the luminescence reaction. In addition, the fluorescent ink as a compound for light emission has a problem that there is no light resistance.

    There are also security labels based on holography etc. However, holography requires advanced plate making technology to construct a pattern, so it is expensive and the special printing surface for holograms is bar code and other printing contents. Have to be provided separately, etc.

JP 2001-105751 A

    The present invention has been considered in view of the above problems, and provides a thermal transfer ink ribbon, a printable medium, and a method for determining the authenticity of a printable medium using the thermal transfer ink ribbon without requiring a special method such as hologram or ultraviolet irradiation. To be an issue.

    The present invention can also be superimposed on a bar code or other print content, and a thermal transfer ink ribbon capable of forgery prevention or authenticity determination of a print medium (security label) without causing any hindrance to the print operation itself, print target It is an object of the present invention to provide a method for determining the authenticity of a medium to be printed using a medium and a thermal transfer ink ribbon.

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

That is, one aspect of the present invention has a base film layer and an ink layer laminated on the surface side of the base film layer, and for authenticity judgment by a design for authenticity judgment between the base film layer and the ink layer. A method for producing a printable medium using a thermal transfer ink ribbon having a design print layer formed thereon, wherein heating is performed from the back side of the base film layer to thermally transfer the ink layer to the printable medium to indicate a bar code The content layer is printed, and when the ink layer is thermally transferred, the design printing layer for authenticity determination remains on the base film layer, and the design for authenticity determination is overlapped on the surface of the printed content layer printed. It is the creation method of the to-be-printed medium which is united .

Another aspect of the present invention has a base film layer and an ink layer laminated on the surface side of the base film layer, and for authenticity determination by a design for authenticity determination between the base film layer and the ink layer. A thermal transfer ink which forms a design print layer and allows only the ink layer to be thermally transferred to a print medium by heating from the back side of the base film layer so that the authenticity judgment design print layer can remain on the base film layer side The ribbon is heated from the back side of the base film layer, and only the ink layer is thermally transferred onto the medium to be printed to print a printed content layer indicating a bar code, and the surface of the printed content layer printed on the medium to be printed Form a print content layer in which a concave design for authenticity judgment is superimposed on the design for authenticity judgment with characters and figures inverted, The authenticity judgment function characterized by differentiating the gloss of the concave design for authenticity judgment in the print content layer formed on the medium and the gloss of the surface area other than the concave design for authenticity judgment in the print content layer. It is a production method of the attached printing medium .

    In the print content layer formed on the print medium by thermal transfer of the ink layer to the print medium, it is possible to form a concave design for authenticity judgment which is inverted with respect to the design for authentication.

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

    The design printing layer for authenticity judgment according to the design for authenticity judgment on the ink layer can be formed by gravure printing.

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

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

    In the thermal transfer ink ribbon, the print target medium, and the method for determining authenticity of a print medium using the thermal transfer ink ribbon according to the present invention, the design for authenticity determination (design print layer for authenticity determination) applied to the ink layer remains on the base film layer side Thus, with the transfer of the ink layer to the print medium by thermal transfer printing, the concave design for authenticity judgment on the surface of the print medium can be made visible from the difference in glossiness, and this authenticity judgment While making it possible to determine the authenticity of the print content on the print-receiving medium (for example, security label) by the thermal transfer ink ribbon depending on the presence or absence of the concave design, it is possible to contribute to the forgery prevention of the security label.

    In particular, according to the thermal transfer ink ribbon of the first invention, the design printing layer for authenticity judgment by the design for authenticity judgment is formed on the ink layer, and the design for authenticity judgment is a base film by thermal transfer of the ink layer to the printing medium. Since it is possible to remain on the layer side, the authenticity judgment can be easily performed by confirming the authenticity judgment concave design in a state where the design for authenticity judgment is reversed.

    In particular, according to the medium to be printed of the second invention, the medium to be printed of the ink layer in the thermal transfer ink ribbon in which the design printing layer for authenticity judgment by the design for authenticity judgment is formed between the base film layer and the ink layer The printed content layer is formed on the print medium by overlapping the design for authenticity verification inverted with respect to the design for authenticity judgment, so that the authenticity of the print medium itself can be judged by the design for authenticity judgment. It can be displayed.

    In particular, according to the method for determining authenticity of a print medium by the thermal transfer ink ribbon of the third invention, a design print layer for authenticity judgment by the design for authenticity determination is formed on the ink layer, and the ink layer is applied to the print medium Since the authenticity of the printed medium to be printed is judged by the thermal transfer, by the concave design for authenticity judgment formed in the print content layer on the medium to be printed by reversing the design for authenticity judgment, it is particularly expensive. It is possible to determine the authenticity of the print medium easily and at low cost without using any hologram or ultraviolet light.

FIG. 1 is an enlarged cross-sectional view of a thermal transfer ink ribbon 1 according to an embodiment of the present invention. It is an expanded sectional view showing an example of printing performed to the label 6 (to-be-printed medium) from the thermal transfer ink ribbon 1 similarly. In the same manner, the design print layer 5 for authenticity judgment in the thermal transfer ink ribbon 1 (for example, the design 5A for authenticity judgment inverted with respect to the normal image "ABC"), and the print content layer 9 after printing on the label 6 (for example , The bar code), and is an explanatory view seen from the ink layer 4 side. Similarly, a concave design for authenticity determination 5B formed on the label 6 along with the transfer of the print content layer 9 and a print content layer 9 (for example, a bar code) after printing on the label 6 are superimposed and shown. It is explanatory drawing seen from the top.

    In the present invention, the design printing layer for authenticity judgment by the design for authenticity judgment is formed on the ink layer, and the design for authenticity judgment is left on the base film layer side by thermal transfer of the ink layer to the printing medium. And a method for determining authenticity of a printable medium by a thermal transfer ink ribbon, a printable medium, and the thermal transfer ink ribbon, which can execute forgery prevention and authenticity judgment of a printable medium such as a security label with a simple configuration and at low cost .

Next, the thermal transfer ink ribbon 1 according to the embodiment of the present invention, the medium to be printed (for example, a security label such as a label 6) and a method for determining authenticity of the medium to be printed by the thermal transfer ink ribbon 1 will be described based on FIGS.
FIG. 1 is an enlarged cross-sectional view of the thermal transfer ink ribbon 1, and the thermal transfer ink ribbon 1 comprises a base film layer 2, a back coat 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 authenticity determination.

    The thermal transfer ink ribbon 1 is held between the thermal head 7 and the platen roller 8 with a print medium (label 6) at a predetermined printing pressure, and printing data from the backcoat layer 3 side by the heating element 7A of the thermal head 7 The ink layer 4 is thermally transferred onto the label 6 according to the print data by the transfer of the thermal transfer ink ribbon 1 and the label 6 by the rotational drive of the platen roller 8 together with the heating based on the above.

Design printing layer 5 for authenticity determination is based on, for example, gravure printing (intaglio printing) based on any visible or identifiable design for authenticity determination 5A (for example, a reverse image of “ABC”, described later in FIGS. 3 and 4). By forming the base film layer 2 and the ink layer 4 between the base film layer 2 and the ink layer 4 according to any type of ink), and by thermally transferring the ink layer 4 to the label 6. It is possible to remain on the side.
As the above-mentioned design 5A for authenticity determination, it is possible to adopt a letter, a figure or any other design regardless of the presence or absence of regularity.
The thickness of the design printing layer 5 for authenticity determination is made thinner than the thickness of the ink layer 4.
In addition, it is desirable that the design printing layer 5 for authenticity determination be distinguishable from the base film layer 2.

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

    With regard to the design 5A for authenticity judgment and the design 5A for authenticity judgment and the concave design 5B for authenticity judgment, either one may be a positive image and the other may be a reverse image, and in general, the concave for authenticity judgment It is considered easier to find a printed medium (label) of a forged counterfeit if the design 5B is a normal image.

    For example, FIG. 3 shows the design print layer 5 for authenticity judgment in the thermal transfer ink ribbon 1 (for example, the design 5A for authenticity judgment inverted with respect to the normal image “ABC”) and the print content after printing on the label 6 Layer 9 (for example, a bar code) is overlapped and shown, and it is an explanatory view seen from the ink layer 4 side. Drawing 4 is concave design 5B for authenticity judgment formed on label 6 with transfer of printing content layer 9, and FIG. 8 is an explanatory view showing the label 6 from above, showing the print content layer 9 (for example, a bar code) after being printed on the label 6 in an overlapping manner.

As shown in FIGS. 3 and 4, the thermal transfer from the ink layer 4 to the label 6 of the print content layer 9 does not affect the printing operation and the formation of the print content layer 9 itself, the print content layer on the label 6 9 can be distinguished from a print target medium (debris) on which the authenticity judgment concave design 5B is not formed by the authenticity judgment concave design 5B (FIG. 4) formed by inverting the authenticity judgment design 5A. The authenticity of the label 6 can be determined.
Of course, although the printed content layer 9 itself such as a barcode has a difference in glossiness, 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 is different from that of the surface design 9B other than the authenticity determination concave design 5B in the print content layer 9 with respect to the authenticity determination concave design 5B. Since the degree is different, it is different from the gloss in the other surface area 9A, so that the authenticity judgment concave design 5B (FIG. 4) on the label 6 can be visually recognized by changing the viewing angle of the label 6.
If the authenticity judgment concave design 5B is visible on the label 6, the label 6 is judged as authentic, and if the authenticity judgment concave design 5B can not be confirmed on the label 6, the label is a fake It can be determined that

    In general, since the base film layer 2 and the backcoat layer 3 are extremely thin, if the design print layer 5 for authenticity determination can be distinguished from the base film layer 2 as described above If the thermal transfer ink ribbon 1 printed on the label 6 can be obtained, it can be confirmed by passing through the base film layer 2 and the back coat layer 3 to confirm the presence of the design print layer 5 for authenticity determination. 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, the forgery prevention and authenticity judgment of the label 6 and other print target media can be performed by a simple printing method by general gravure printing without using expensive means such as holograms and ultraviolet light.

1 Thermal transfer ink ribbon (Example, Fig. 1)
2 Base film layer 3 Back coat layer 4 Ink layer 5 Design print layer for authenticity judgment 5A Design for authenticity judgment Design for authenticity judgment of print layer 5 (Fig. 3)
5B Concave design for authenticity judgment inverted to design 5A for authenticity judgment (Fig. 4)
6 Labels (Media to be Printed, Examples, FIG. 2, FIG. 4)
7 Thermal head 7A Heating element of thermal head 7 8 Platen roller 9 Printed content layer (Fig. 2, Fig. 3, Fig. 4)
9A Other surface area other than concave design 5B for authenticity judgment in printed content layer 9

Claims (7)

A base film layer, as well as organic and laminated ink layer on the surface side of the base film layer, thermal transfer to form the authenticity determination design printed layer by authenticity determination design between the ink layer and the base film layer A method of producing a print medium using an ink ribbon, comprising:
Heating from the back side of the base film layer to thermally transfer the ink layer to a printing medium to print a print content layer indicating a bar code;
When the ink layer is thermally transferred, the design print layer for authenticity determination remains on the base film layer, and the design for authenticity determination is superimposed on the surface of the printed content layer printed.
How to make print medium . Claims, characterized in that said ink layer to the print content layer formed on the print medium by the thermal transfer on the printing medium to form an authenticity determination concave design inverted with respect to the authenticity determination design The manufacturing method of the to- be-printed medium of 1 statement. 3. The printing medium according to claim 1 , wherein in the thermal transfer ink ribbon, a thickness of the design printing layer for authenticity determination on the ink layer is thinner than a thickness of the ink layer. How to create In the thermal transfer ink ribbon, the authenticity determination design printed layer by the authenticity determination design to the ink layer, the according to any of claims 1 to 3, characterized in that this is formed by gravure printing How to make print media . The method for producing a print-receiving medium according to any one of claims 1 to 4, wherein in the thermal transfer ink ribbon, the design printing layer for authenticity determination is distinguishable from the base film layer. The gloss of the concave design for authenticity determination of the print content layer formed on the print medium by the thermal transfer of the ink layer to the print medium is the other surface of the print content layer other than the authenticity design concave design. The method for producing a medium to be printed according to any one of claims 2 to 5, which is different from the gloss of the area. A base film layer and an ink layer laminated on the surface side of the base film layer, and a design print layer for authenticity judgment by the design for authenticity judgment is formed between the base film layer and the ink layer, The thermal transfer ink ribbon, wherein only the ink layer is thermally transferred to the printing medium by heating from the back side of the base film layer, and the design printing layer for authenticity determination can remain on the base film layer side,
The substrate is heated from the back side of the base film layer, and only the ink layer is thermally transferred to a print medium to print a print content layer indicating a bar code.
A print content layer is formed on the surface of the print content layer printed on the print medium by superimposing a concave design for authenticity determination using characters and figures inverted with respect to the design for authenticity determination.
The gloss of the concave design for authenticity determination in the print content layer formed on the medium to be printed and the gloss of the other surface area of the print content layer other than the concave design for authenticity determination are different. A method of creating a print medium with an authenticity judgment function.

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