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    • 5. 发明授权
    • Security device having multiple security features and method of making same
    • 具有多个安全特征的安全设备及其制造方法
    • US06255948B1
    • 2001-07-03
    • US09203449
    • 1998-12-01
    • Gary R. WolpertGerald J. GartnerStephen B. CurdoPaul F. Cote
    • Gary R. WolpertGerald J. GartnerStephen B. CurdoPaul F. Cote
    • G08B1314
    • G08B13/2408G06K19/18G08B13/2417G08B13/2437G08B13/2448Y10S428/916Y10T428/24917Y10T428/2944Y10T428/2958Y10T428/2976Y10T428/31678
    • A security device having multiple security features is used with an item, such as a secure document, ticket, label or tag, to authenticate the item and/or encode data pertaining to the item. One example of the security device includes a carrier substrate, a metallic layer disposed on the carrier substrate, and a magnetic layer disposed on the metallic layer in substantial registration with at least a portion of the metallic layer, thereby providing both metallic security features and magnetic security features. The metallic layer and the magnetic layer also form graphic or visually identifiable indicia on the carrier substrate to provide a visual security feature. According to one method, the metallic layer is applied to the carrier substrate, the magnetic layer is applied to the metallic layer, and the layers are etched to form the graphic indicia. The magnetic layer can, in one embodiment, include a magnetic chemical resist that is printed on the metallic layer in the form of the graphic indicia. The magnetic security features use one or more magnetic characteristics, such as the level of magnetism and decay rate characteristic of soft magnetics, to authenticate and/or to encode data. The magnetic security feature may also include magnetic tracks for recording data. The metallic security features use different lengths of conductive regions to authenticate and/or encode data.
    • 具有多个安全特征的安全设备与诸如安全文档,票证,标签或标签的项目一起使用以验证项目和/或对与该项目有关的数据进行编码。 安全装置的一个示例包括载体基板,设置在载体基板上的金属层和布置在金属层上的磁性层,与金属层的至少一部分基本对准,由此提供金属安全特征和磁性 安全功能。 金属层和磁性层还在载体基底上形成图形或视觉上可识别的标记,以提供视觉安全特征。 根据一种方法,将金属层施加到载体衬底上,将磁性层施加到金属层,并且蚀刻该层以形成图形标记。 在一个实施例中,磁性层可以包括以图形标记的形式印刷在金属层上的磁性化学抗蚀剂。 磁性安全特征使用一个或多个磁特性,例如软磁性的磁性和衰减速率特性来认证和/或编码数据。 磁性安全特征还可以包括用于记录数据的磁道。 金属安全功能使用不同长度的导电区域来认证和/或编码数据。