| abstract |
The present invention provides a thermochromic ink composition for an ink jet printer comprising at least one thermochromic pigment and a carrier medium. The thermochromic pigment is encapsulated to form a thermochromic micro-encapsule pigment whose particle size is below 1 μm and temperature of coloration/decoloration is −10˜100° C. The carrier medium is a water solution or an organic solution with surfactant, dispersant, buffer, chelating agent, bactericide, preservative, and UV inhibitor. |