JP2013136175A - Printing medium and authenticity judging method of printing medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing medium which is colored brightly in warm color (red color or orange color) by irradiation with black light by using inorganic type of weather-resistant fluorescence emission body and can be hardly falsified in various kinds of ribbons and labels used for security, and to provide an authenticity judging method of the printing medium.SOLUTION: The printing medium, which is provided by using the fluorescence emission body comprising an europium diketone chelate compound as inorganic type of color producing agent as the additives for various kinds of printing media, includes: a medium substrate (PET film) 2; and a printing laminate material 3 which is laminated on the medium substrate 2; wherein the fluorescence emission body 7 comprising the europium diketone chelate compound is added to the printing laminate material 3.

Description

  The present invention relates to a printing medium and a printing medium authentication method, and more particularly to a printing medium such as a thermal transfer ink ribbon and a label and a printing medium authentication method.

Traditionally, security labels used for maintaining confidentiality and safety management of products, parts, and various other adherends are clearly marked when they are peeled off when they are peeled off. A configuration is adopted in which characters that remain or are concealed appear.
In order to prevent forgery of such a security label, a label that emits a fluorescent color by irradiating with a black light is already known and used as a ski ticket or a parts label of an automobile.
However, conventional security labels are only those that develop a cold color such as blue or green. Therefore, there is a problem that it is difficult to visually recognize in a dark environment where black light is used, or when the background color of the label is close to black.

JP 2002-169469 A

  The present invention has been considered in view of the above problems. A printing medium that produces a warm color that is easy to visually recognize even in a dark environment or when the background color of a label is close to black, and a method for determining the authenticity of a printing medium. The issue is to provide.

  The present invention also provides a printing medium and a printing medium authenticity determination method capable of producing a brighter and brighter fluorescent color by irradiation with black light using a weather-resistant inorganic fluorescent coloring material. Let it be an issue.

  Another object of the present invention is to provide a printing medium that is colorless before black light irradiation and is colored for the first time after irradiation, and a method for determining the authenticity of the printing medium.

  In addition, the present invention provides a printing medium and a method for determining the authenticity of a printing medium in which it is difficult to counterfeit ribbons and labels used for various security by coloring from bright to red or orange by irradiation with black light. The issue is to provide.

  That is, the present invention focuses on adopting a fluorescent color former composed of europium, diketone, and chelate compound as an inorganic color former as an additive for various printing media. A printing medium comprising a medium substrate such as a label substrate and a printing laminate laminated on the medium substrate, wherein the printing laminate comprises a fluorescent color former comprising europium, diketone and chelate compound Is a printing medium characterized in that is added.

  A second invention is a method for determining the authenticity of a printing medium comprising a medium substrate and a printing laminate laminated on the medium substrate, wherein the printing laminate includes an europium diketone chelate compound. And adding a fluorescent color former comprising: irradiating the printing laminate with black light and confirming the emission color of the printing laminate to determine the authenticity of the printing medium. This is a method for determining the authenticity of a printing medium.

  The medium substrate can be a film substrate of a thermal transfer ink ribbon.

  The printing laminate has a colored ink layer, and a fluorescent coloring layer made of the fluorescent coloring material can be laminated on the colored ink layer.

  The printing laminate has a colored ink layer, and the fluorescent color body colored ink layer can be formed by mixing the fluorescent color body into the colored ink layer.

  The medium substrate can be a label substrate.

  The printing laminate may be a fluorescent coloring layer made of the fluorescent coloring material.

  The printing laminate has an ink layer, and a fluorescent color developing layer made of the fluorescent color former can be laminated on the ink layer.

  The printing laminate has an ink layer, and the fluorescent color body ink layer can be formed by mixing the fluorescent color body into the ink layer.

  The ink layer can be a colored ink layer.

  The ink layer can be a heat-sensitive color ink layer.

  The fluorescent color former can emit light in red or orange when irradiated with black light.

  The printing medium is used to print various management indications (for example, “inspected” or “unopened”, etc.), lot numbers, unique identification numbers, necessary character symbols, etc. In the case of an ink ribbon, display is performed by printing, and in the case of a label, this is affixed to various articles such as necessary products and parts, depending on whether or not the fluorescent light is emitted by irradiation with black light. The authenticity of the printing medium can be determined.

  In the printing medium and the printing medium authenticity judgment method according to the present invention, since a fluorescent color former composed of colorless europium, diketone, and chelate compound is added to the printing laminate, it becomes colorless by irradiation with black light. For articles that use printing media even in a dark environment or when the label ground color is close to black, such as when the fluorescent color develops from a state to a bright bright color (red or orange) with a clear emission spectrum The authenticity determination of the printing medium can be performed by a simple method of confirmation by visual recognition.

  In particular, according to the printing medium of the first invention, since the fluorescent color former composed of colorless europium, diketone and chelate compound is added to the laminated material for printing, it is colorless before irradiation with black light. It shines in warm colors (red or orange) and can contribute to the prevention of forgery of this type of printing medium.

  In particular, according to the authenticity judgment method of the printing medium of the second invention, the printing laminate to which the fluorescent color former composed of europium, diketone and chelate compound is added is irradiated with black light, and the printing laminate By confirming the emission color, the authenticity of the printing medium can be determined.

It is a perspective view of the form which wound the printing medium (thermal transfer ink ribbon 1) by the 1st Example of this invention in roll shape. 2 is a cross-sectional view of the thermal transfer ink ribbon 1. FIG. It is sectional drawing of the printing medium (thermal transfer ink ribbon 10) by the 2nd Example of this invention. It is explanatory drawing (Formula (1)-Formula (5)) of structural formula of a europium diketone chelate compound similarly. 1 is a schematic side view of a thermal printer 13 that is loaded with a thermal transfer ink ribbon 1 and 10. It is a top view which shows an example which printed the printing information 28 on the label continuous body 14 (label piece 21) similarly. 2 is a plan view showing a state in which a label piece 21 on which print information 28 is printed using the thermal transfer ink ribbon 1 or the thermal transfer ink ribbon 10 is attached to a predetermined part P. FIG. It is a perspective view of the form which wound the printing medium (label continuous body 30) by the 3rd Example of this invention in roll shape. 2 is a cross-sectional view of the label continuum 30. It is sectional drawing of the label continuous body 40 (printing medium) by the 4th Example of this invention. It is sectional drawing of the label continuous body 50 (printing medium) by the 5th Example of this invention. It is a schematic side view of the thermal printer 54 used by loading the label continuous body 30, 40 or 50. It is a top view which shows an example which printed the printing information 56 on the label continuous body 30 (label piece 35) similarly. It is a top view which shows the state which affixed the label piece 35 to the predetermined | prescribed component P similarly.

  In the present invention, by adding a fluorescent chromophore composed of colorless europium, diketone and chelate compound to a printing laminate, it is possible to emit a bright warm color (red or orange) by irradiation with black light, and a ribbon And a printing medium effective in preventing counterfeiting of labels and a method for determining the authenticity of printing media.

Next, a printing medium (thermal transfer ink ribbon 1) and a printing medium authenticity determination method according to the first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of the thermal transfer ink ribbon 1 wound in a roll shape. FIG. 2 is a sectional view of the thermal transfer ink ribbon 1. The thermal transfer ink ribbon 1 is a PET film 2 (polyethylene terephthalate film, medium). Substrate) and a laminate 3 for printing laminated on the PET film 2.

  The PET film 2 is a film base material serving as a base of the thermal transfer ink ribbon 1, and is laminated with a printing laminate 3, and heat of the heated portion is received by heat received from the opposite side of the printing laminate 3 through the PET film 2. The printing laminate 3 can be transferred to a label, tag or other printing medium.

  The printing laminate 3 has a release ink layer 4, a fluorescent coloring layer 5, and a colored ink layer 6.

  The release ink layer 4 is directly laminated on the PET film 2, and the heated printing laminate 3 portion can be separated from the PET film 2 by heating with the printing pattern on the thermal transfer ink ribbon 1. After printing on the printing medium, it becomes a layer that protects the surface of the printed portion.

The fluorescent coloring layer 5 is laminated between the release ink layer 4 and the colored ink layer 6. For example, from a colorless europium diketone chelate compound, which is an inorganic fluorescent dye, to the medium of the printing ink. The fluorescent color body 7 is added.
When the fluorescent color former 7 is irradiated with black light, it can emit light in a bright and bright warm color (red or orange) with a bright emission spectrum. Therefore, the entire fluorescent light emitting layer 5 is black light (for example, having a wavelength of Fluorescence can be developed in bright red or orange color by ultraviolet rays (254 to 390 nm).

Europium / diketone / chelate compounds, for example, manufactured by Palace Chemical Co., Ltd. are easily dispersed and excellent in processability, and it is desirable to employ them.
The addition ratio of the europium / diketone / chelate compound is preferably 10 to 30% by weight.

  The colored ink layer 6 has pigments having various colors (for example, black, red, and other pigments) for printing with the thermal transfer ink ribbon 1.

  FIG. 3 is a cross-sectional view of a printing medium (thermal transfer ink ribbon 10) according to a second embodiment of the present invention. The thermal transfer ink ribbon 10 includes the PET film 2 (medium substrate) and a printing laminate. 11.

  The printing laminate 11 has the release ink layer 4 and a fluorescent color body colored ink layer 12.

  The fluorescent color body colored ink layer 12 is formed by mixing the fluorescent color body 7 made of the europium / diketone / chelate compound with the colored ink layer 6.

  FIG. 4 is an explanatory diagram of a structural formula of a europium diketone chelate compound, and the europium diketone chelate compound in the present invention employs any one of formulas (1) to (5) in FIG. Can do.

The thermal transfer ink ribbon 1 (first embodiment) and the thermal transfer ink ribbon 10 (second embodiment) described above can both be loaded into an arbitrary thermal printer and used for necessary information printing.
For example, FIG. 5 is a schematic side view of the thermal printer 13, and the thermal printer 13 includes a supply unit 15 for the label continuous body 14, a position detection unit 16, and a printing unit 17.

As shown in FIG. 5 with an enlarged cross-sectional view, a part of the label continuous body 14 is a belt-like mount 18 (release paper), a label base material 19, and an adhesive layer 20 on the back side of the label base material 19. And having.
The label base material 19 and the pressure-sensitive adhesive layer 20 are cut and divided at a predetermined label pitch to form a plurality of single-leaf label pieces 21 and temporarily attached to the mount 18.

  The supply unit 15 can hold the continuous strip-shaped label 14 in a roll shape, and can feed the continuous label body 14 in a strip shape in the direction of the position detection unit 16 and the printing unit 17.

  The position detection unit 16 includes an optical position detection sensor 22 and detects a position detection mark 23 printed in advance on the back side of the mount 18.

  The printing unit 17 includes a thermal head 24 and a platen roller 25, and a ribbon supply shaft 26 and a ribbon take-up shaft 27 of the thermal transfer ink ribbon 1 or the thermal transfer ink ribbon 10.

With the thermal transfer ink ribbon 1 or the thermal transfer ink ribbon 10 and the thermal printer 13 having such a configuration, desired information can be printed on the label continuous body 14 (label piece 21).
For example, FIG. 6 is a plan view showing an example in which the print information 28 is printed on the label continuum 14 (label piece 21). The print information 28 including a management display such as “inspected” or “unopened” is displayed. It is something to print out. Of course, as other information, a lot number, a unique identification number, a necessary character symbol, and the like can be printed.

  However, the printing information 28 is composed of the printing laminate 3 made of the thermal transfer ink ribbon 1 or the printing laminate 11 made of the thermal transfer ink ribbon 10, and therefore, the fluorescent coloring layer 5 of the thermal transfer ink ribbon 1 or the thermal transfer ink ribbon 1. It has the fluorescent color body colored ink layer 12 of the ink ribbon 10.

FIG. 7 is a plan view showing a state in which the label piece 21 on which the print information 28 is printed using the thermal transfer ink ribbon 1 or the thermal transfer ink ribbon 10 is attached to a predetermined part P. By irradiating B, the print information 28 shines bright red or orange with a clear emission spectrum.
That is, even if the color of the print information 28 is printed in black, for example, the print information 28 is brightly shining red or orange by the irradiation of the black light B, and the “inspected” or “opened” of the part P It can be seen that the print information 28 such as “prohibited” is protected.
On the other hand, if the print information 28 remains black even when irradiated with the black light B, it is immediately determined that the label piece 21 has been replaced by some means, that is, the label piece 21 has been forged. It will be.
Thus, by irradiating the printing laminates 3 and 11 with the black light B and confirming the light emission color (whether clear red or orange) of the printing laminates 3 and 11, the dark environment or the label The authenticity of the printing media 1 and 10 can be determined even when the ground color is black or close to black.

As described above, since the emission color of the fluorescent color former 7 made of europium, diketone, chelate compound, which is an inorganic pigment in the fluorescent color development layer 5 or the fluorescent color development colored ink layer 12, is clear, the anti-counterfeit effect Is expected to be extremely high.
In addition, the fluorescent chromophore 7 made of europium / diketone / chelate compound has excellent weather resistance and can withstand long-term use.

In the present invention, the present invention can also be applied as a printing medium in which the medium substrate is a label substrate.
8 is a perspective view of a form in which a printing medium (label continuous body 30) according to a third embodiment of the present invention is wound in a roll shape, and FIG. 9 is a cross-sectional view of the label continuous body 30, and FIG. The continuous body 30 includes a label base material 31 (medium base material) and a printing laminate 32 laminated on the label base material 31.

The label base material 31 is a base material made of paper material or synthetic resin material, and is laminated with a printing laminated material 32 on the front surface side, and is coated with an adhesive layer 33 on the back surface side thereof, A mount 34 is temporarily attached to the back side of the adhesive layer 33.
On the back side of the mount 34, the position detection mark 23 (FIG. 5) is printed in advance.

  Further, the single label piece 35 is formed by cutting and dividing the label base material 31, the printing laminate 32, and the adhesive layer 33 at a predetermined label pitch.

The printing laminate 32 itself constitutes the fluorescence coloring layer 36.
The fluorescent color forming layer 36 is obtained by adding, for example, the above-described fluorescent color developing body 7 made of colorless europium, diketone, chelate compound, which is an inorganic fluorescent dye, to the medium of the printing ink. 7 and 14), the emission spectrum can be bright and bright and bright red or orange.

FIG. 10 is a cross-sectional view of a label continuum 40 (printing medium) according to a fourth embodiment of the present invention. The label continuum 40 includes the label base material 31, the adhesive layer 33, and a mount 34, A printing laminate 41.
The printing laminate 41 includes the fluorescent color developing layer 36 and the ink layer 42.

  The ink layer 42 is formed by laminating the fluorescent coloring layer 36, but it can also be configured as a colored ink layer having black or any other color ink, or it can be configured as a thermal color former layer to form a thermal printer. The heat-sensitive color former can also be colored by heating with.

  The label substrate 31, the printing laminate 41, and the pressure-sensitive adhesive layer 33 are cut and divided at a predetermined label pitch to form a single-leaf label piece 43.

  FIG. 11 is a cross-sectional view of a label continuum 50 (printing medium) according to a fifth embodiment of the present invention. The label continuum 50 includes the label base material 31, an adhesive layer 33, a mount 34, A printing laminate 51.

The printing laminate 51 itself constitutes the fluorescent color body ink layer 52.
The fluorescent color body ink layer 52 is formed by mixing the fluorescent color body 7 made of the europium / diketone / chelate compound with the ink layer 42.
The fluorescent color-forming body ink layer 52 can be configured as a colored ink layer having black or any other color ink, similar to the ink layer 42 (FIG. 10), or can be configured as a heat-sensitive color forming layer. The thermosensitive color former can be colored by heating with a thermal printer.

  Note that the single label piece 53 is formed by cutting and dividing the label base material 31, the printing laminate 51 (fluorescent coloring material ink layer 52), and the adhesive layer 33 at a predetermined label pitch.

The label continuum 30 (third embodiment, FIGS. 8 and 9), the label continuum 40 (fourth embodiment, FIG. 10) and the label continuum 50 (fifth embodiment, FIG. 11) are as follows. In either case, this can be loaded into an arbitrary thermal printer for printing.
The label continuum 30 will be described below as a representative example.
For example, FIG. 12 is a schematic side view of the thermal printer 54. The thermal printer 54 can employ substantially the same configuration as the above-described thermal printer 13 (FIG. 5). It has a part 16 and a printing part 17.

  However, unlike the thermal printer 13, the printing unit 17 is loaded with a general thermal transfer ink ribbon 55 to which the fluorescent color body 7 is not added. Of course, the thermal transfer ink ribbon 1 (first embodiment, FIG. 2) to which the fluorescent color body 7 is added and the thermal transfer ink ribbon 10 (second embodiment, FIG. 3) can also be used.

For example, desired information can be printed on the label continuum 30 (label piece 35) by the label continuum 30, the label continuum 40 or the label continuum 50, and the thermal printer 54 having such a configuration.
For example, FIG. 13 is a plan view showing an example in which the print information 56 is printed on the label continuum 30 (label piece 35). The print information 56 including a management display such as “inspected” or “unopened” is displayed. It is something to print out. Of course, as other information, a lot number, a unique identification number, a necessary character symbol, and the like can be printed.
However, this print information 56 is printed, for example, in black by a general thermal transfer ink ribbon 55 and does not include the fluorescent color former 7 added thereto. If the thermal transfer ink ribbon 1 (first embodiment, FIG. 2) and the thermal transfer ink ribbon 10 (second embodiment, FIG. 3) to which the fluorescent color body 7 is added, the fluorescent color body 7 is added. Print information 56 can be obtained. In this case, both the label piece 35 and the print information 56 can be fluorescently colored and are most easily visible.

  When the ink layer 42 and the fluorescent color former ink layer 52 are heat-sensitive color layers, it is not necessary to load the thermal transfer ink ribbon 55 in the thermal printer 54 of FIG.

FIG. 14 is a plan view showing a state in which the label piece 35 is attached to a predetermined part P. By irradiating the label piece 35 with the black light B, the fluorescent coloring layer 36 itself on the surface of the label piece 35 is The emission spectrum is bright and brilliant red or orange.
That is, even if the color of the print information 56 is printed black by the thermal transfer ink ribbon 55, the fluorescent color developing layer 36 shines brightly in red or orange due to the irradiation of the black light B. It can be seen that the print information 56 such as “completed” or “unopened” is protected.
On the other hand, if the fluorescent coloring layer 36 (label piece 35) remains colorless even when irradiated with the black light B, it means that the label piece 35 has been replaced by some means, that is, the label piece 35 has been forged. It will be immediately found out.

  Thus, by irradiating the printing laminates 32, 41, 51 with the black light B and confirming the emission color (whether clear red or orange) of the printing laminates 32, 41, 51, the printing laminates The authenticity of the medium (label continuum 30, 40, 50 or its label pieces 35, 43, 53) can be determined.

1 Thermal transfer ink ribbon (printing medium, first embodiment, FIGS. 1 and 2)
2 PET film (medium substrate)
DESCRIPTION OF SYMBOLS 3 Laminating material for printing 4 Release ink layer 5 Fluorescence coloring layer 6 Colored ink layer 7 Fluorescence coloring material 10 Thermal transfer ink ribbon (printing medium, 2nd Example, FIG. 3)
11 Print Laminate 12 Fluorescent Colored Colored Ink Layer 13 Thermal Printer (FIG. 5)
14 Label continuum 15 Supply unit 16 Position detection unit 17 Printing unit 18 Mount 19 Label substrate 20 Adhesive layer 21 Label piece 22 Position detection sensor 23 Position detection mark 24 Thermal head 25 Platen roller 26 Ribbon supply shaft 27 Ribbon winding Axis 28 Print information 30 Label continuum (print medium, third embodiment, FIGS. 8 and 9)
31 Label base material 32 Laminate for printing 33 Adhesive layer 34 Mount 35 Label piece 36 Fluorescent coloring layer 40 Label continuum (printing medium, fourth embodiment, FIG. 10)
41 Print Laminate 42 Ink Layer 43 Label Piece 50 Label Continuum (Printing Medium, Fifth Example, FIG. 11)
51 Print Laminate 52 Fluorescent Color Ink Layer 53 Label Piece 54 Thermal Printer (FIG. 12)
55 Thermal Transfer Ink Ribbon 56 Print Information B Black Light (Figs. 7 and 14)
P parts (Figs. 7 and 14)

Claims (13)

A medium substrate;
A printing medium having a printing laminate laminated on the medium substrate,
A printing medium comprising a fluorescent color former comprising europium, diketone, and chelate compound added to the printing laminate. The printing medium according to claim 1, wherein the medium substrate is a film substrate of a thermal transfer ink ribbon. The printing laminate has a colored ink layer,
2. The printing medium according to claim 1, wherein a fluorescent coloring layer made of the fluorescent coloring material is laminated on the colored ink layer. The printing laminate has a colored ink layer,
2. The printing medium according to claim 1, wherein the fluorescent color former is mixed with the colored ink layer to form a fluorescent color former colored ink layer. The printing medium according to claim 1, wherein the medium substrate is a label substrate. 6. The printing medium according to claim 5, wherein the laminated material for printing is a fluorescent coloring layer made of the fluorescent coloring material. The printing laminate has an ink layer,
6. The printing medium according to claim 5, wherein a fluorescent coloring layer made of the fluorescent coloring material is laminated on the ink layer. The printing laminate has an ink layer,
6. The printing medium according to claim 5, wherein the fluorescent color body ink layer is formed by mixing the fluorescent color body into the ink layer. The printing medium according to claim 7 or 8, wherein the ink layer is a colored ink layer. 9. The printing medium according to claim 7, wherein the ink layer is a heat-sensitive coloring ink layer. 6. The printing medium according to claim 1, wherein the fluorescent color former can emit red or orange light by irradiating it with black light. 6. The printing medium according to claim 1, wherein the europium diketone chelate compound employs any one of the following formulas (1) to (5).

A medium substrate;
A printing laminate having a printing laminate to be laminated on the medium substrate,
While adding a fluorescent color former composed of europium, diketone and chelate compound to the laminate for printing,
A method for determining the authenticity of a printing medium, wherein the authenticity of the printing medium is determined by irradiating the printing laminate with black light and confirming a light emission color of the printing laminate.

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