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Color-changing inks
Article By:
Homola, Timothy J. Color Change Corporation, Streamwood, Illinois.
Last reviewed:2008
DOI:https://doi.org/10.1036/1097-8542.YB080620
Color-changing inks are most often used to increase value or uniqueness in a variety of applications. The first major commercially successful color-changing ink application was the mood ring of the 1970s, but now even automobiles can change color. Applications and uses continue to expand rapidly. While there are a range of color-changing technologies, as listed in Table 1, the most popular and readily printable are thermochromic (changing color with temperature) and photochromic [changing color with ultraviolet (UV) light]. These inks can be reversible or irreversible, as the application dictates. However, irreversible inks are not readily available.
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