ThermoSafe™
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
Example of Original Transcript Next to its Color Copy
