*IF* they used a thermal printer to make the card then the paper would be sensitive to heat and would turn black if put into a heated laminating machine.
If it is hand-written then it isn't likely to be thermal paper.
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Why do people insist on making claims without looking them up first, do they really think no one will check? Proof by emphatic assertion rarely works.
Confirmation bias is real; I can find any number of articles that say so.
Victor, NY - Randallstown, MD - Yakima, WA - Stevensville, MD - Village of Hillsborough
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