Thermal inkjet is a printing technology that uses heat to create tiny droplets of ink. In this process, a small resistor heats the ink in a chamber, causing it to vaporize and form a bubble. As the bubble expands, it forces a droplet of ink out of a nozzle onto the paper. This method is commonly found in inkjet printers, which are popular for home and office use. Thermal inkjet technology allows for high-resolution printing and is compatible with various ink types, making it versatile for different printing needs.