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    • 1. 发明申请
    • Data storage device, apparatus and method for using same
    • 数据存储装置及其使用方法
    • US20060038014A1
    • 2006-02-23
    • US11256525
    • 2005-10-20
    • Donald MannBert CookWilliam ZeissnerRobert Parkison
    • Donald MannBert CookWilliam ZeissnerRobert Parkison
    • G06K7/08G06K19/06
    • G06K19/06196
    • Data storage device for use as a portable card, magnetically encodeable card, magnetic credit card or the like, including a substrate having at least one surface. A high density, magnetically coercive material layer is disposed on or deposited on the substrate for storing magnetic signals. The magnetically coercive material may have an axis of magnetization that is oriented in a predetermined direction relative to at least one surface of the substrate. A layer of non-magnetically material is disposed on the substrate for defining an exchange break layer. A protective coating is formed on said magnetic material layer and selected to have a thickness between a maximum thickness which would materially attenuate magnetic signals passing between the magnetic material layer and a transducer and a minimum thickness enabling said protective coating to be abraded by usage in an ambient natural atmosphere operating environment for removing a known quantity of the protective coating. The protective coating may comprise one, two or more layers of materials.
    • 用作便携式卡,磁性可编码卡,磁性信用卡等的数据存储装置,包括具有至少一个表面的基板。 将高密度的磁矫顽材料层设置在基板上或沉积在基板上用于存储磁信号。 磁矫顽材料可以具有相对于衬底的至少一个表面沿预定方向取向的磁化轴。 在基板上设置非磁性材料层,用于限定交换断裂层。 在所述磁性材料层上形成保护涂层,并选择其厚度在最大厚度之间,该最大厚度将实质上减弱通过磁性材料层和换能器之间的磁信号,并使最小厚度能够使所述保护涂层在 环境天然气氛的操作环境,用于去除已知量的保护涂层。 保护涂层可以包括一层,两层或更多层材料。