ANTI-COUNTERFEITING SEE-THROUGH SECURITY FEATURE USING LINE PATTERNS

摘要

Patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The document is sufficiently transparen t to allow see-through of the partial image on the back of the document to be superimposed on the partial image on the front of the document to form a complete image if t he patterns are properly aligned. The complete image will disappear if misaligned.