to a source not shown of ink and located above the chamber a nozzle chamber 25 a nozzle opening 26 is provided in the chamber defining layer 23 to permit displacement of ink droplets toward paper or other medium not shown onto which ink is to be deposited a paddle 27 is located between the two chambers 24 and 25 and when in its quiescent position as indicated in fig1 and 7 the paddle 27 effectively divides the two chambers 24 and 25 the paddle 27 is coupled to an actuating arm 28 by a paddle extension 29 and a bridging portion 30 of the dielectric coating 23 the actuating arm 28 is formed i e deposited during fabrication of the device to be pivotable with respect to the support structure or substrate 20 that is the actuating arm has a first end that is coupled to the support structure and a second end 38 that is movable outwardly with respect to the support structure the actuating arm 28 comprises outer and inner arm portions 31 and 32 the outer arm portion 31 is illustrated in detail and in isolation from other components of the nozzle device in the perspective view shown in fig3 the inner arm portion 32 is illustrated in a similar way in fig4 the complete actuating arm 28 is illustrated.