An inkjet print head (10) includes one or more laser sources (12). Each
laser source (12) is actuable to emit laser radiation and each laser
source is associated with one or more ink chambers (18). Each ink chamber
(18) includes a nozzle aperture (20) through which ink is dispensed and is
arranged to, in use, communicate with an ink supply. Each chamber has a
membrane (16) arranged to contact the ink in the ink chamber, the membrane
being responsive to laser radiation from an associated laser source to
produce an acoustic emission capable of displacing ink from the chamber.
