Temperature sensitive ink is the ink that whose color can be changed with temperature.It is includes:reversible fading ink,reversible coloration ink and reversible discoloration ink.
Details
1.Reversible fading ink:turninig colorless in appearance after being heated and it can restore its original color after being cooled.
1).Temperature:7℃ -13℃ ,26℃ -31℃ ,38℃ -43℃,46℃-51℃ ,60℃ -65℃ 
2).Color:middle yellow.gold red,rose red,bright red,royal blue.shamrock,verdancy,
peacock green,blackish green,dark brown and black.

2.Reversible coloration ink:colorless in appearance but shows a color after being heated and can restore colorless after being cooled.
1).Temperature:60℃ 
2).Color:colorless-rose red/verdancy/peacock green/blue/dark brown

3.Reversible discoloration ink:Its color can be changed into another one and it can restore its original color after being cooled.
1).Temperature:10℃ ,30℃ ,40℃ ,50℃ ,60℃ 
2).Color:green-yellow,black-red,red-yellow.