The ink jet printer technology used by Canon. Bubble jets differ from ink jets in the way they create the dots used to create characters and text. Bubble is literally to the way the ink is placed on the paper. Ink Jets form letters by tiny spray or burst of ink.
Canon's trade name for its thermal drop on demand ink jet printer technology. The ink is heated, which produces a bubble that expands and ejects the ink out of the nozzle. As the bubble cools, the vacuum created draws fresh ink back into the nozzle.