公开(公告)号：US08544893B2

公开(公告)日：2013-10-01

申请号：US11664933

申请日：2005-10-11

申请人： Jürgen Schützmann ,  Lothar Schütt

发明人： Jürgen Schützmann ,  Lothar Schütt

IPC分类号： B44F1/12 ,  B42D15/10 ,  B42D15/00 ,  B44C1/14 ,  G03G9/083 ,  H01F1/03 ,  H01F1/04

CPC分类号： B42D25/369 ,  B42D25/29 ,  B42D2033/16 ,  G06K19/12 ,  G07D7/04 ,  Y10T428/24802

摘要： The invention relates to a security element for protecting documents of value, which has magnetic material. Furthermore, the invention relates to a document of value, a transfer material and method for producing such security elements and documents of value as well as a method and an apparatus for checking such a security element or document of value.According to the invention the security element has at least two magnetic materials, wherein the magnetic materials have different coercive field strengths and are applied onto and/or incorporated in the security element in such a manner that their remanence is equally high.

摘要翻译： 本发明涉及一种用于保护具有磁性材料的价值文件的安全元件。 此外，本发明涉及一种价值的文件，用于生产这种安全元件和价值的文件的转移材料和方法以及用于检查这种安全元件或价值的文件的方法和装置。 根据本发明，安全元件具有至少两种磁性材料，其中磁性材料具有不同的矫顽场强度，并以这样的方式施加到和/或并入安全元件中，使得它们的剩磁量相等。

公开(公告)号：US06229306B1

公开(公告)日：2001-05-08

申请号：US09011747

申请日：1998-06-18

申请人： Dieter Stein ,  Lothar Schütt

发明人： Dieter Stein ,  Lothar Schütt

IPC分类号： G07D700

CPC分类号： G01V3/108 ,  G07D7/04

摘要： The method for measuring magnetic properties of sheet material is able to deliver reliable signals at both low and high magnetic particle density in the sheet material. First a measuring head converts the magnetic properties of the sheet material into electric signals. The electric signals produced by the measuring head are amplified in a certain signal range such that the lower-amplitude electric signals produced by the areas with low magnetic particle density of the sheet material are amplified to a greater extent than the electric higher-amplitude signals produced by the areas with high magnetic particle density of the sheet material. For this purpose the signal range is divided into at least three ranges which are each amplified constantly. The amplification in the two outer ranges is selected equal, and the amplification in the middle range greater than the amplification in the outer ranges. The electric signal is preferably shifted by a constant value before amplification so that the zero point of the signal range is in the middle of the middle range.

摘要翻译： 用于测量片材的磁性能的方法能够在片材中以低和高磁性颗粒密度提供可靠的信号。 首先，测量头将片材的磁特性转换为电信号。 由测量头产生的电信号在一定的信号范围内被放大，使得由片材材料的低磁性颗粒密度区域产生的较低振幅的电信号被放大到比产生的电高幅度信号更大的程度 由片材的高磁性颗粒密度的区域。 为此，信号范围被分为至少三个范围，每个范围被不断放大。 选择两个外部范围内的扩增相等，并且在中间范围内的扩增大于外部范围内的扩增。 电信号优选在放大之前移动一个恒定值，使信号范围的零点处于中间范围的中间。