Typically, inkjet printing forms images by spraying tiny droplets of liquid ink onto paper. Small size and precision placement of the dots of ink produce very near photo-quality images. Two primary inkjet technologies are thermal bubble or bubble jet and piezoelectric. The former uses heat and the latter uses a crystal and an electric charge to apply the ink.
Some inkjet printers employ a hybrid dye-sublimation process. The color is contained in cartridges, heated, vaporized, and laid down a strip at a time rather a page at a time creating an effect closer to continuous tone than traditional inkjet technology.