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light reactive ink

radtanto
in Applied Chemistry

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Hi

 

Can anyone point me in the right direction for a project I'm working on

 

I need to develop an ink which is invisible when applied to paper, but becomes permanently visible after being exposed to powerful Xenon lamp flash. The ink should remain invisble when exposed to every-day ambient light/heat.

 

Any pointers would be gratefully received.

 

Regards

 

Radtanto

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