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    • 1. 发明授权
    • Forensic feature for secure documents
    • 安全文件的取证功能
    • US09399363B2
    • 2016-07-26
    • US11460207
    • 2006-07-26
    • Daoshen BiTung-Feng YehRobert L. JonesJ. Scott Carr
    • Daoshen BiTung-Feng YehRobert L. JonesJ. Scott Carr
    • B41M3/14B42D25/00B42D25/45
    • B42D25/373B41F11/02B41M3/14B41M5/502B42D25/00B42D25/23B42D25/309B42D25/313B42D25/318B42D25/333B42D25/45B42D2033/30B42D2033/32
    • A forensic feature for a secure document comprises a base document layer and a covert material applied to the base document layer. The covert material includes a carrier and forensic material within the carrier. The forensic material includes a ratio of salts or oxides of metals, such as rare earth metals. The ratio is selected to correspond with a source of the document. The forensic material may be mixed into a coating or ink that is applied at predetermined locations on a secure document. The ratio is then measurable from metal ion signals of the salts or oxides. This ratio, or some metric derived from it, may be linked with information embedded elsewhere in the document to enable verification of the document. Another forensic document feature has a forensic metric that is measurable from a covert material in the document, and this forensic metric corresponds to a source of the document. A blocking layer applied over the covert material prevents access to the covert material such that at least partial destruction of the document is required to measure the forensic metric. The blocking layer may have a blocking property that blocks electromagnetic waves from activating the covert material, or blocks the electromagnetic waves from the covert material in response to the activating waves. The blocking layer is deconstructed to access the forensic feature, verify the document and perform forensic tracking.
    • 用于安全文档的取证功能包括应用于基本文档层的基本文档层和隐蔽材料。 隐蔽材料包括载体和载体内的法医材料。 法医材料包括金属的盐或氧化物的比例,例如稀土金属。 该比率被选择为与文档的来源相对应。 法医材料可以混合到在安全文件上的预定位置施加的涂层或油墨中。 然后可以从盐或氧化物的金属离子信号测量该比例。 该比率或从其导出的某种度量可能与文档中其他地方嵌入的信息相关联,以便能够验证文档。 另一个法医文档特征具有可从文档中的隐蔽材料测量的取证度量,并且该法医指标对应于文档的来源。 施加在隐蔽材料上的阻挡层防止对隐蔽材料的访问,使得需要文档的至少部分破坏来测量取证度量。 阻挡层可以具有阻挡电磁波激活隐蔽材料的阻挡特性,或者响应于激活波阻挡来自隐蔽材料的电磁波。 阻塞层被解构以访问取证功能,验证文档并执行取证跟踪。
    • 2. 发明申请
    • Forensic Feature For Secure Documents
    • 安全文件的取证功能
    • US20160236460A1
    • 2016-08-18
    • US15140952
    • 2016-04-28
    • Daoshen BiTung-Feng YehRobert JonesJ. Scott Carr
    • Daoshen BiTung-Feng YehRobert JonesJ. Scott Carr
    • B41F11/02B42D25/45B42D25/333B41M5/50
    • B42D25/373B41F11/02B41M3/14B41M5/502B42D25/00B42D25/23B42D25/309B42D25/313B42D25/318B42D25/333B42D25/45B42D2033/30B42D2033/32
    • A forensic feature for a secure document comprises a base document layer and a covert material applied to the base document layer. The covert material includes a carrier and forensic material within the carrier. The forensic material includes a ratio of salts or oxides of metals, such as rare earth metals. The ratio is selected to correspond with a source of the document. The forensic material may be mixed into a coating or ink that is applied at predetermined locations on a secure document. The ratio is then measurable from metal ion signals of the salts or oxides. This ratio, or some metric derived from it, may be linked with information embedded elsewhere in the document to enable verification of the document. Another forensic document feature has a forensic metric that is measurable from a covert material in the document, and this forensic metric corresponds to a source of the document. A blocking layer applied over the covert material prevents access to the covert material such that at least partial destruction of the document is required to measure the forensic metric. The blocking layer may have a blocking property that blocks electromagnetic waves from activating the covert material, or blocks the electromagnetic waves from the covert material in response to the activating waves. The blocking layer is deconstructed to access the forensic feature, verify the document and perform forensic tracking.
    • 用于安全文档的取证功能包括应用于基本文档层的基本文档层和隐蔽材料。 隐蔽材料包括载体和载体内的法医材料。 法医材料包括金属的盐或氧化物的比例,例如稀土金属。 该比率被选择为与文档的来源相对应。 法医材料可以混合到在安全文件上的预定位置施加的涂层或油墨中。 然后可以从盐或氧化物的金属离子信号测量该比例。 该比率或从其导出的某种度量可能与文档中其他地方嵌入的信息相关联,以便能够验证文档。 另一个法医文档特征具有可从文档中的隐蔽材料测量的取证度量,并且该法医指标对应于文档的来源。 施加在隐蔽材料上的阻挡层防止对隐蔽材料的访问,使得需要文档的至少部分破坏来测量取证度量。 阻挡层可以具有阻挡电磁波激活隐蔽材料的阻挡特性,或者响应于激活波阻挡来自隐蔽材料的电磁波。 阻塞层被解构以访问取证功能,验证文档并执行取证跟踪。