Security element comprising magnetic areas of different coercivities, a method for its production and a method for reading information encoded in the element
作者： Maurizio Lazzerini
DOI:
关键词: Substrate (printing) 、 Reading (computer) 、 Production (computer science) 、 Electrical engineering 、 Coercivity 、 Transmitted light 、 Element (category theory) 、 Opacity 、 Optoelectronics 、 Materials science 、 Magnet
摘要: A security element (1), particularly for banknotes, cards and the like, comprising a first substrate (2) which is at least partially opaque when viewed in transmitted light, plurality of magnetic areas (3, 4) being arranged on said substrate, wherein each formed by material, second material or an arrangement materials superimposed, exhibiting different coercivity values are detectable sensor, magnetically saturated such that one not affected other.
lens.org 参考文章(11)
Mark A. Litman, Antiforgery security system ,(1996)
Jeffrey David Mullen, Advanced dynamic credit cards ,(2008)
Lothar Schütt, Jürgen Schützmann, Security element comprising magnetic materials having the same remanence and a different coercive field intensity ,(2005)
Weidong Li, Edgar M. Williams, Stripline magnetic writing of dynamic magnetic data bits in surrounding regions of static magnetic data bits ,(2007)
Robert Black, Christopher Hall, Automatic cash dispenser and system and method therefor ,(1974)
Yoshiyuki Kato, Paper leaf detecting device ,(2005)
Antonio Mantegazza, Unit for sensing magnetic codes ,(1989)
Manfred Heim, Security element and verification method for a value document ,(2004)
Wittich Kaule, Security document and method for producing it ,(1996)