These color-changing inks can be used in screen-printing and offset lithography along with, other printing processes.? They are combined with standard inks and are used for an ever-widening range of applications from textiles, to product stickers.? Using basic, color theory when a leucodye color like blue is added to a, red ink it produces purple ink. When cool the,, Product will, be purpleAnd when the temperature rises the color, will change to red. Any number of colors can be formulated in this way. The temperature. Range for such changes can also be varied.
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