Plastic card provided with magnetic stripe

Details Plastic card provided with magnetic stripe Plastic card provided with magnetic stripe

1996-01-16

1998-02-24

Nakarani, D. S.

Printed matter

Having revealable concealed information, fraud preventer or...

In incorporated magnetic material

235449, 235457, 235493, 283 83, 283 86, 283 91, 283 94, 283101, 283107, 283109, 283904, 359 3, 428213, 428215, 428414, 4284246, 4284758, 4284763, 428483, 428518, 428520, 428900, B42D 1502

Patent

active

057205000

ABSTRACT:
A plastic card provided with a magnetic stripe, which is very difficult to forge or alter and, even tough subjected to forgery or alteration, enables the forgery or alteration to be easily detected in appearance. The plastic card includes a card substrate and a hologram-magnetic stripe including, provided on said card substrate in the following order, an adhesive layer, a first magnetic recording layer, a second magnetic recording layer, a transparent continuous thin film layer and a hologram forming layer. The first magnetic recording layer and the second magnetic recording layer are such that one of the magnetic recording layers has a coercive force at least twice as high as the other magnetic layer and a Curie point at least 100.degree. C. below the other magnetic layer and, when the magnetic recording layers are heated at a temperature in the range of from the lower Curie point to 30.degree. C. below the lower Curie point, they become substantially identical to each other in saturation writing current value.

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