Irreversible thermochromic pigment is a kind of water-based ink which is a latest product .It is widely used in paper screen printing .Its available colors and activation temperature are,
Black : 75¡æ,90¡æ,115¡æ Magenta :75¡æ,90¡æ
Color Changing Form: from white(similar to white color) to above color and remain color even after cooling.