Magnetic card

Abstract

Abstract PURPOSE:To improve the secret security by providing a protecting layer made of a soft magnetic material to the front and rear side of a magnetic film to shield completely the information written on the magnetic film. CONSTITUTION:The protection films 4, 4' made of the soft magnetic material are provided to the front and sides of the magnetic film 2 for magnetic recording and reproduction. The protection film 4' has an effect to shield the magnetic field from the substrate of the magnetic card, the saturation of the protection film 4 is difficult by the reading magnetic field from the substrate side and the reading by use of the magnetic head is difficult. The information is read easily by a reading winding while saturating the magnetic film 2 of the protection films 4, 4' by applying a read magnetic field from the side of the protection film 3.

Inventors

• 👤 Yuzo Kotani
• 👤 小谷　祐三
• 👤 Hiroshi Nishimoto
• 👤 西本　宏
• 👤 Akira Isaka
• 👤 井坂　明
• 👤 Ginya Ishiguro
• 👤 石黒　銀矢

Bibliographic Details