JPH0139576Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to cards such as identification cards, particularly cards for preventing tampering and forgery.

Recently, the use of identification cards, credit cards, passports, and other proof cards has increased, and as a result, the number of card-related accidents, fraud, and counterfeiting has increased, causing a lot of trouble for those involved. The present invention was devised in light of this point, and instead of using an opaque center core in the past, a transparent center core is used, and hidden characters, patterns, etc. are placed inside, allowing various new features to be created depending on the angle at which the card is viewed. This is an anti-counterfeiting card that creates a composite pattern or has patterns that appear and disappear.

Embodiments of the present invention will be described in detail with reference to the drawings.

After the opaque film printing layer 3 is provided at a predetermined position on the upper surface of the transparent center core, the upper surface printing layers 2a and 2b are provided.

Here 2a is provided on the opaque coating printing layer and 2b is provided directly on the transparent center core.

Next, a pattern printing layer 5 is printed on the lower surface of the transparent center core at a position hidden by the opaque film printing layer 3, and then a solid printing layer 6 is provided on the entire back surface. Further, if necessary, after providing the lower surface printing layer 7, a transparent oversheet 8 may be provided for protection.

The configuration of the present invention has been described above, and the actual usage method will now be described.

In FIG. 2, if the viewer looks at the card in this state, the upper surface printing layer 2 will be visible and the pattern printing layer 5 will be
It is completely hidden by the opaque coating printing layer 5. When viewed from the next position, the patterned printing layer 5 is visible between the top surface printing layers.

If you look from a further position, the upper surface printing layer 2b
If it is made solid, the pattern printing layer 5 will be hidden again, and from Figure 3, (x1 + x2) / (x2 + x3) = tanθ ₂ /
When forming the upper surface printing layer 2b and the pattern printing layer 5 so that there is a relationship of tanθ ₁ , the upper surface printing layer 2
If b is configured to overlap with the pattern printing layer 5 to form a new pattern, the new pattern will be visible when the two overlap. For example, the letter S is formed on the pattern printing layer 5, and the upper surface printing layer 2b
If you form the letter 〓 with an inverted S, it will polymerize and you will see the letter 8. Therefore, in order to prevent counterfeiting, there is a method in which the hidden pattern is visible only from a certain angle;
Two ways are possible: a new pattern is formed and appears when viewed from a certain angle. If the opaque coating printing layer and solid printing layer are the same color, it will look natural and look good.

In this embodiment, the opaque coating layer and the upper surface printing layer are printed on the transparent center core, but they may be printed on the transparent oversheet side. Similarly, a lower surface printing layer may be provided on the transparent oversheet side.

The transparent oversheets 1 and 8 and the center core 4 are made of synthetic resin such as vinyl chloride, and the transparent center core preferably has a thickness of about 1 to 2 mm, and the transparent oversheet has a thickness of approximately 0.1 mm.

Since the structure of the present invention is as described above, the hidden character pattern may be completely visible only from a certain angle, or when viewed from a predetermined angle, the hidden character pattern may be combined with the printed layer and look like a new pattern, resulting in counterfeiting. is extremely difficult to do.

Therefore, the present invention is extremely versatile and can be used not only for identification cards but also for greeting cards and the like.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 shows the structure of the invention, and FIG. 2 shows how to use it.
FIG. 3 is a diagram illustrating the position of the pattern printing layer. 1, 8...Transparent oversheet, 2a, 2b...
...Top surface printing layer, 3... Opaque film printing layer, 4...
...Transparent center core, 5...Pattern printing layer, 6...
...solid printing layer, 7...lower surface printing layer.

Claims (1)

[Scope of utility model registration request] A card in which a transparent center core sheet and a transparent oversheet are laminated as necessary on the front and back sides thereof, a partially opaque coating printing layer on the upper surface of the transparent center core sheet or the oversheet, and on the printing layer or the printing layer. An upper surface printing layer is provided on the outside from the top, and a pattern printing layer is provided on the lower surface of the sheet.
A solid printing layer and a lower surface printing layer are provided in sequence, and the pattern printing layer is provided at a position hidden by the opaque film printing layer when viewed from directly above, and when viewed from a predetermined angle, it overlaps with the upper surface printing layer and appears as a new layer. A card characterized in that the pattern printing layer is configured to form a pattern.