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A Bubble Jet printer is a type of inkjet printer. The difference between an inkjet printer and a Bubble Jet printer is that a Bubble Jet printer makes use of certain heating elements in order to prepare the ink, whereas an inkjet printer makes use of piezoelectric crystals.
The Bubble Jet printer, which is a trademark of Canon, makes use of a tiny heating element to direct ink. The cartridges and print heads used in a Bubble Jet printer are almost the same as in an inkjet printer, except that a tiny heating element is used inside the nozzle. The ink is vaporized every time an electric impulse reaches the heating element, thus creating a bubble which expands, forcing ink onto the paper. Typically, there are 64 or 128 tiny nozzles in a Bubble Jet printer.