KR20020046383A - A plastic card for preventing counterfeit - Google Patents

Abstract

PURPOSE: Provided is a plastic card for counterfeit prevention which utilizes a mold with latent pattern carved to emboss on the surface of the card directly so that it helps to keep durability. CONSTITUTION: In the plastic card for counterfeit prevention, the plastic card for counterfeit prevention is characterized by using a mold with a latent formation part configured by changing line width, interval, angle and the size of halftone dots to emboss to the plastic card directly and form a concave and a convex part simultaneously for showing a latent effect. The latent formation part includes a convex part(2) of a background line, a concave part(1) between background lines, a convex part(3) of a foreground line and a concave part(4) between foreground lines.

Description

A plastic card for preventing counterfeit

The present invention relates to a plastic card for preventing forgery and alteration, and more particularly, by directly embossing the plastic card using a mold having a latent image forming portion configured by conversion of line width, spacing, angle, and size of dots, concave portions and convex portions simultaneously. The present invention relates to a forgery-resistant plastic card which exhibits a latent image effect without additional means by forming.

Recently, the use of ID cards for recording photographic or text data on a surface of a card made of a plastic material using a thermal transfer printer has been increasing and increasing. However, as the possibility of forgery of the data such as the deletion of photos and texts recorded on such a card by solvents and the printing of new information at the same location is increased, the necessity of countermeasures for preventing such increases is increasing.

Korean Patent No. 62086 describes a method of preventing the forgery of ID cards by heat-sealing a thin film laminate film and a laminate film on the back of an ID card or a credit card, and the Korean Patent Application Publication No. 2000-15454 forgery by a laser. There is described an anti-counterfeiting card having a recording area, a printing area, and a security area.

In addition, Utility Model Publications Nos. 95-27018 and 99-40115 disclose a method of forming irregularities by stamping using a female mold having a certain pattern of irregularities on the photo attachment site of identification distillation, or stamping foil (gold leaf, silver foil). , A method of forming a predetermined pattern using a colored ribbon, etc.) is mentioned, but this method has a disadvantage in that the shape of the manufactured pattern is coarse and not delicate. On the other hand, the patent of Korea Patent Publication No. 96-7351 and the like mentioned a method for preventing the forgery by embossing the paper using a mold engraved with a specific pattern, but it was difficult to apply to plastics.

Also, a method of applying a transparent hologram to a plastic card type identification card is being developed. However, in the case of a modulation card to which similar holograms are applied, it is difficult to verify authenticity unless it is an expert, and manufacturing costs for manufacturing cards including holograms are expensive, and thus, it is expensive to increase security using holograms.

On the other hand, Korean Patent No. 174285 forms irregularities in paper, plastic, etc. by using a material such as a mold having an uneven portion pattern, and prints straight lines at regular intervals using colored inks different from the color of the material itself. Later, a latent image forming body and a method for producing the same have been described, but this technique has a problem in that the manufacturing steps are complicated and difficult to implement.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, to maintain the balance of the card design without using additional materials or means such as hologram, stamping foil, ink, etc. By vividly identifying the latent image with the naked eye, it is easy to judge forgery and alteration, and the manufacturing cost is low. The latent image produced is to provide a semi-permanent forgery prevention plastic card.

The plastic card according to the present invention for achieving the above object is concave by embossing directly to the plastic card using a mold having a latent image forming portion composed of the conversion of the width, spacing, angle and size of the dot in the plastic card for preventing forgery and alteration. The formation of the latent portion and the convex portion at the same time exhibits a latent image effect.

1 is an example of the present invention, a plan view of a mold having a concave portion and a convex portion and a latent image forming portion capable of forming a latent image of a character or a pattern;

2 is an example of the present invention, the plastic card is shown the portion to which the latent image is applied,

3 is an exemplary view showing a step of forming an antireflective layer having an exact position when manufacturing a card as an example of the present invention;

Figure 4 is an example of the present invention, is an exemplary view showing the step of forming a non-reflective layer having a fixed position when manufacturing a multi-sided card,

5 is a working view of a mirror plate including an anti-reflective layer forming unit having a positionality on a belt type mirror plate, as an example of the present invention;

6 is a plastic card to which an antireflective layer is applied as an example according to the present invention.

Explanation of symbols on the main parts of the drawings

1: concave of the gap between the background lines,

2: the convex part of the background line,

3: convex part of the foreground line,

4: concave portion of the gap between foreground lines,

5: character information part with latent image applied, 6: image information part with latent image applied,

7: alignment hole, 8: masked mirror surface,

9: anti-reflective layer forming portion, 10: the surface of the mirror plate without masking,

11: antireflective layer, 12: card design position.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 shows a plan view of a mold having a latent image forming portion capable of forming a latent image of a character consisting of a concave portion and a convex portion, which is an example of the present invention. The latent image forming portion is a convex portion 2 of a background line, a concave portion 1 which is a gap between these background lines, and a convex portion 3 of a foreground line. And a concave portion 4 which is an interval between these foreground lines. The latent image forming unit may be deformed into a transformation of a line width, an interval, an angle, and a size of a dot and may be divided into a background line and a foreground line by reconfiguring their line widths and intervals. Referring to FIG. 1, in order to express the latent image effect, the convex portion 3 of the foreground line may be set as a logo or a letter, and the convex portion 2 of the background line may have a square or ellipse shape, and different angles. (Eg, 90 °, etc.). For example, in FIG. 1, the angle between the foreground line and the background line is 90 °, and the line width and line spacing of the latent image formed in the mold are the same.

At this time, the width of the lines (2, 3) forming the latent image and the interval (1, 4) of the line is less than 0.15mm for the effect of the latent image, the most effective latent image can be obtained within this range. In addition, the step between the concave portion and the convex portion, which means the difference in height between the concave portion and the convex portion forming the latent image, is 70 μm or less, and if the step exceeds 70 μm, the reproducibility of the fine lines forming the latent image when embossing on the surface of the card is insufficient. There is a problem. In addition, the depth of the embossed unevenness is preferably within 1㎛, and if it exceeds 1㎛ the visible effect of the application of the latent image pattern becomes too distinct to meet the intention to apply the latent image. These conditions must be maintained even if they change shape.

Embossing the mold as shown in FIG. 1 and applying it to a plastic card forms a latent image having concave and convex portions at the same time. The latent image is designed without using additional materials or means such as hologram, stamping foil, and ink use. If you tilt the card at an angle up, down, left, or right while maintaining the balance, you will get a clear latent effect. One example of a plastic ID card issued by a thermal transfer printer to which a latent image according to the present invention is applied is illustrated in FIG. 2, which is a character information unit 5 or a photo for displaying an individual's name or other information. This seal can be freely applied anywhere in the image information section 6. In this way, if the image or name portion to which the latent image according to the present invention is applied is erased and reprinted with a solvent, minute irregularities formed on the surface of the card may be missing from the transfer-printed image portion, thereby easily distinguishing the modulation.

In addition, the plastic card using the latent image according to the present invention allows the recording of the changes and also prevents forgery by providing a partially in-situ antireflective layer on the card surface.

FIG. 3 shows the step of forming the antireflection layer 11 having the positionality when the card is manufactured according to the present invention, and FIG. 4 has the positionality when the multi-sided card is manufactured according to the present invention. The step of forming the antireflective layer 11 is shown. Referring to FIG. 3, an antireflective layer is formed by accurately designing an antireflective layer forming unit 9 to determine a position and a pattern for forming the antireflective layer 11 according to a design and to form an antireflective layer on a mirror plate used in a laminating process. Masking portion other than the forming portion is masked with masking tape to protect the portion of the mirroring plate 8 other than the anti-reflective layer forming portion, and the non-reflective layer forming portion is not masked by using the designated mesh abrasive and the designated spraying pressure. By hitting (9), the antireflective layer 11 having the designated pattern is formed on the part where the antireflective layer 11 is to be formed. Then, the masking tape is removed and cleaned, and the mirror plate 10 is put into the laminating process. To make a card. At this time, the mesh of the abrasive is most preferably 200 to 400 mesh, the surface roughness of the antireflective layer 11 thus produced is 0.2 to 1㎛. In addition, when forming the anti-reflective layer, it is possible to impart the positionality by providing the alignment bar (7) consisting of a pin bar or a pinhole.

Looking at the application of the method in the manufacturing of the multi-sided card with reference to Figure 4, the multi-sided printed sheet having the alignment hole 7 in place so that the anti-reflective layer 11 can be formed in the front, back, After lamination into four to five layers in the order of the protective layer, it is partially sealed by an electric iron or an ultrasonic adhesive, and then mated. Then, the laminated sheet is placed using a mirror plate and a mirror plate having an antireflection layer forming portion, and then the antireflection layer is placed. Place the mirror plate having the antireflective layer formed only on the part to be formed, and accurately position the proper quantity of the sheets matched in this order using the exact alignment hole, and then perform the steps as shown in FIG. A layer can be obtained. 5 shows the process drawing of the mirror surface plate containing the anti-reflective layer formation part which has a position in the mirror type plate of a belt type. An example of the plastic card to which the antireflective layer 11 is applied is shown in FIG. 6.

In addition, when forming a latent image, working temperature and pressure are performed so that the back part and periphery of a card may not be damaged depending on the material characteristic of the plastic card to be used.

The present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

Example 1

Using the designed window, the mold was manufactured by carving the step of concave and convex part into 65㎛. After applying the personalized information by transferring photos to plastic card to apply the mold to the card, 150 ℃, 1.0 A plastic card was formed by embossing a mold manufactured at a specific position of the photo part under embossing pressure of bar to form a latent image pattern having a depth of 0.7 μm.

Example 2

Except that the temperature at the time of embossing was carried out in the same manner as in Example 1, except that the latent image pattern was formed a plastic card.

Example 3

Except that the temperature at the time of embossing was carried out in the same manner as in Example 1, except that the latent image pattern was formed a plastic card.

In the plastic card manufactured in Examples 1 to 3, the embossed pattern was not confirmed when viewed in the vertical direction, and the latent image of the embossed pattern and the pattern was confirmed when the card was inclined at a predetermined angle up, down, left, and right.

Example 4

Using the designed window, the mold was manufactured by carving the step of concave and convex part into 65㎛. After applying the personalized information by transferring photos to plastic card to apply the mold to the card, 150 ℃, 1.0 Embossing with a mold made at a specific location on the photo under the embossing pressure of the bar to form a latent image pattern with a depth of 0.7 μm, and also aligning the cards with pinholes, masking a mirror plate except for a certain pattern of antireflective layer forming part A plastic card was manufactured by using a mirror plate in which an antireflective layer was formed at a position except for the masking part by hitting the antireflective layer forming part with an abrasive and an injection pressure.

Therefore, the plastic card of the present invention has durability by directly embossing the surface of the card by using a mold engraved with a latent image formed by the conversion of the width, spacing and angle of the line and the size of the dot and the like, such as hologram, stamping foil and ink. The balance of the card design without the use of additional materials and when the card is tilted at a certain angle up, down, left, and right can be easily seen with the naked eye, and its manufacturing step is simple and the manufacturing cost is low. Since it is semipermanent, a considerable effect can be obtained in preventing forgery and alteration.

Claims (5)

A plastic card for preventing forgery and alteration, which exhibits a latent image effect by simply embossing the plastic card directly using a mold having a latent image forming portion composed of a line width, an interval, an angle, and a size of a dot. Forgery-resistant plastic card, characterized in that. The width of the lines constituting the latent image and the interval between the lines are 0.15 mm or less, the step difference between the convex portion and the concave portion is 70 µm or less, and the depth of embossed irregularities is within 1 µm. Forgery-resistant plastic card. The plastic card for preventing forgery and falsification of claim 1, wherein the latent image is formed of a pattern or a letter and applied to a photo or personal information portion of the plastic card. The forgery-resistant plastic card of claim 1, wherein the plastic card further comprises an antireflection layer having a positionality. In the anti-falsification plastic card, an anti-reflective layer forming portion for forming an anti-reflective layer on the mirror plate is designed, masked with a masking tape on a mirror plate portion other than the anti-reflective layer forming portion, and then an anti-reflective layer is formed using an abrasive and a spraying pressure. After that, the masking tape is removed and put into a laminating process to form an antireflective plastic card having a fixed position.