Patent ID: 6969156

Claim:
A droplet generator for microdroplets, in particular nozzle head for inkjet printers, comprising groups of piezo electrically actuated bending converters ( 1 ) disposed in a casing ( 11 ), wherein the bending converters ( 1 ) are disposed at a distance from each other, over a partial length of the bending converters are guided separately in recesses by wall thicknesses, wherein liquid longitudinal channels ( 12 ) are disposed under flexible fingers ( 5 ) in a frame plate ( 2 ) and running in longitudinal direction and wherein a liquid chamber ( 13 ) is formed in the frame plate ( 2 ), wherein at least one nozzle is connected to the liquid chamber ( 13 ) for each bending converter ( 1 ), wherein an edge bead ( 15 ) runs around an opening ( 14 ) of the liquid chamber ( 13 ), wherein the edge bead ( 15 ) serves to limit a stroke of a respective one of the flexible fingers ( 5 ), and wherein a shaft ( 16 ) forming part of the liquid chamber 13 ) follows to the opening ( 14 ) and reaches in height level up to a base plate ( 1 a ).