registered to Canon in 1977 - they are a variety of inkjets and use very similar systems, although only Canon can use the BubbleJet name

a kind of ink-jet printer

BubbleJet is Canon's trade name for the inkjet technology of heating a water-based ink, causing a bubble of ink to expand and thus be expelled out of the print head nozzle. The resultant vacuum then draws a bubble of ink into the printer head in readiness.