JPS5822190Y2 - hologram card - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hologram card used as an identification card such as a credit card, ID card, bank card, cash dispenser card, etc.

Conventionally, various means have been adopted to prevent forgery, theft, etc. of identification cards such as credit cards and ID cards.

One method is to record information about a specific individual on a card as a concave-convex hologram phase hologram, irradiate hologram reproduction light during verification, detect the hologram diffraction light with an optical sensor, and read the information recorded on the card. be.

However, the uneven hologram recorded on the thermoplastic resin film is susceptible to heat, solvents, scratches, dust, etc., and the surface needs to be protected with a durable resin sheet.

1 and 2 show cross-sectional views of a conventional hologram card.

FIG. 1 is a sectional view of a hologram card having a three-layer structure consisting of a thermoplastic resin film 2 (hereinafter referred to as a hologram sheet) having an uneven hologram 1, an adhesive layer 4, and a protective sheet 3.

FIG. 2 is a sectional view of a hologram card having a five-layer structure formed by sequentially polymerizing a protective sheet 3, an adhesive layer 4, a hologram sheet 2, an adhesive layer 4', and a protective sheet 3'.

The conventional hologram cards shown in FIGS. 1 and 2 have an adhesive layer on almost the entire surface, and since the uneven hologram 1 is in the vicinity of the hot-melt adhesive that requires heating, the heat will attack the hologram. I can not use it.

Furthermore, with adhesives that vaporize the solvent, the solvent may dew on the hologram surface or the hologram surface may be eroded by the solvent.

Adhesives, such as adhesives, in which the solvent does not evaporate and do not require heating during adhesion, have an adhesive strength of +, 2, and are not practical.

This invention solves the above-mentioned drawbacks, is difficult to counterfeit, cannot be seen visually, is durable,
Furthermore, it is an object of the present invention to provide a hologram card suitable for use as a credit card whose information does not disappear even under external pressure, heating up to about 70° C., magnetic field, etc.

An example thereof will be described in detail below.

As shown in FIG. 3, an adhesive layer 5 is provided on the top surface of a transparent hologram sheet 2 on which information such as a secret number is recorded using a concave-convex hologram 1, excluding the hologram recording area, and a hot-melt adhesive is further applied to the outer periphery of the transparent hologram sheet 2. Create layer 4.

By the action of the adhesive layer 5 and the adhesive layer 4, the hologram 1 is protected from the vaporized gas of the solvent generated during adhesion from the adhesive layer 4 and the heat due to heating, while the printed reinforcing resin film sheet 3 is protected. Overlap and secure the periphery.

Next, FIG. 4 shows a cross-sectional view of a double-sided layered hologram card in which reinforcing films 3, 3' are superimposed on both sides of the hologram sheet 2, and its structure is the same as that in FIG.
The explanation will be omitted.

As described above, when the reinforcing sheet is adhesively fixed to the top surface or both upper and lower surfaces of the hologram sheet, the hologram card of the present invention
Since the adhesive part is limited to the periphery and adhesive is inserted in other parts, the hologram is not adversely affected by heat, solvents, scratches, dust, etc., and a flat card with sufficient strength can be provided. .

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional views of a conventional hologram card, and FIGS. 3 and 4 are sectional views each showing an embodiment of the hologram card of the present invention. Explanation of figure numbers 1... Concave/convex hologram, 2...
...Hologram sheet, 3,3'...Reinforcement sheet), 4.4'...Adhesive, 5,5'...
...Adhesive.

Claims (1)

[Scope of utility model registration request] In a laminated type hologram card in which a reinforcing resin film printed on both the front and back sides or one front side of a thermoplastic resin film on which information is recorded as a concave-convex hologram is adhered by an adhesive layer, the hologram film and the reinforcing film are fixed. A hologram card, wherein the adhesive layer is applied only to the outer peripheral area, and the adhesive layer is interposed in other areas except for the hologram area.