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How can sellotape make ink vanish?

I got a receipt with my bbq the other day and decided to future proof it as proof of purchase by covering it with sellotape (sticky tape). I've done this on parcels before to waterproof the address on printed labels without problems.

A couple of days later I look at the receipt and it's blank! The paper is still white, the tape still clear but no ink. It was cheap tape, not a name brand, but where the heck did the ink go?

I think I'll photo it in future.



Submitted December 30, 2017 at 06:48AM by DamionK http://ift.tt/2Cq0N6d
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