Shadow image security feature
作者： Michael Tappij-Gielen
DOI:
关键词:
摘要: A security document created by laminating a metalized foil between transparent layers, and modifying the outside of to form base color document, while leaving window area formed an unmodified portion foil. laser is then used ablate at least in create image. The includes ablated image therein. resulting transparent, with being visible from front rear document.
lens.org 参考文章(40)
Bernhard Solmsdorf, Identity card protected from unauthorized reproduction with a copying machine ,(1997)
M Annenberg, Photograph bearing identification card structure and method of manufacture ,(1971)
John Herslow, Celerino Florentino, Card with hologram formed over magnetic strip ,(2006)
Jeffrey Blyth, Hologram identification device ,(1983)
Peter Schiffmann, Michael Bauer, Johann Müller, Monika Brigitte Schmid, Security element for antifalsification papers and valuable documents ,(2004)
Gruchy Ernest D De, Record bearing document ,(1944)
Joshua Robert Nemeth, Security document with biometric or photographic image ,(2003)
Naci Goldas Kuyumculuk Sanayi Ithalat Ihracat A.S. Bozkurt, Card based secure product packaging system ,(2005)
Richard M. Haddock, Method of making secure personal data card ,(2003)
John H. Herslow, Laser markable secure documents ,(2005)