Reinforced I.C. card

Details Reinforced I.C. card Reinforced I.C. card

1991-07-01

1993-05-25

Willis, Davis L.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361380, 174 35R, 428902, G06K 1906, B32B 300

Patent

active

052145662

ABSTRACT:
To provide I.C. cards that are reinforced and above all in which the card body is compatible both with using the I.C. in the card and with using a surface of the card that is coated with a film of magnetic material, at least two reinforcing sheets made of different types of reinforcing material are provided so as to adapt the expansion coefficient and the strength coefficient of the card so that both these coefficients lie within a range that is common to both card technologies. It is shown that this provides greater synergy in use of cards having both electronic memory and magnetic memory since in spite of temperature expansion magnetic card shapes are maintained, thereby making it possible to use magnetic tracks that comply with mass data storage requirements for use with magnetic tracks.

REFERENCES:
patent: 4786541 (1988-11-01), Nishimura et al.
patent: 4879153 (1989-11-01), Ohashi et al.
patent: 4908937 (1990-03-01), Gloton et al.
patent: 4941257 (1990-07-01), Gloton
patent: 4943464 (1990-07-01), Gloton et al.
patent: 4990759 (1991-02-01), Gloton et al.
Patent Absracts of Japan, vol. 10, No. 338 (P-516)[2394], 15 Nov. 1986; & JP-A-61 141089.

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