Security element for protecting documents of value
作者： Manfred Heim , Dieter Stein , Friedrich Kretschmar , Jürgen Schützmann
DOI:
关键词:
摘要: The invention relates to a security element for protecting documents of value which comprises magnetic material. Arranged on the is an extract from code plurality areas and gap areas. arranged in prescribed direction along element, example at right angles transport or document through sensor. For length code, certain conditions are chosen basis sensor used.
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