Hot or Not?

Boyce adds that thermochromic inks are weak in light fastness resistance, so converters should avoid continuous exposure to ultraviolet as they tend to degrade the colors.

Signet states that thermochromic inks are very similar to other water-based inks in their shelf life and transparent environment. “From a waste standpoint, the pigments are inert and so the environmental issues will stem from the resins and other additives in the ink formulation.”