Heat Reactive Copy-Void Pantograph

U.S. Patent 5,636,874

An improved copy/void pantograph which reveals a warning message when a color photocopy is made. Utilizing a temperature sensitive camouflage pattern to conceal the extreme NaNOcopy™ background, which creates a robust warning message when copied. The temperature sensitive "thermochromic" camouflage also acts as a verifier since it disappears or changes color when touched, rubbed or breathed on.

Examples of Original Transcripts Next to Their Color Copy
Anti-Copy Background

Example of Original Transcript Next to its Color Copy
Anti Copy Security Transcript


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