Patent ID: 6161925
Filing Date: 2000-12-19
Classification: B41J

Abstract:
An ink jet nozzle head comprising:a channel plate defining a linear array of equidistanced nozzles and a plurality of substantially parallel ink channels communicating with an associated nozzle,a vibration plate disposed on said channel plate,a plurality of separately disposed block members, each containing a comb-like array of fingers which extend toward and engage said vibration plate, some fingers functioning as actuators for exerting mechanical pressure on ink contained in ink channels, which in turn expels ink droplets from the nozzles, at least one actuator being provided for each nozzle, and other of said fingers serving as support members, anda backing means for mechanically backing and interconnecting the actuators and support members, said support members supporting the channel plate and the backing means against reaction forces of the actuators, said backing means comprising a separate backing member disposed over said array of fingers and being more flexible in a transverse direction of the ink channels than in a longitudinal direction thereof, said backing member containing a plurality of grooves which define a plurality of separate beams which extend in a longitudinal direction of the ink channels.