Patent ID: 6217160
Filing Date: 2001-04-17
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,at least one block member 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 the ink channels which, in turn, expels ink droplets from the nozzles, at least one actuator being provided for each nozzle, and other fingers serving as support members for supporting the actuators at the vibration plate, where the reaction forces of the actuators are received, anda backing member disposed on the block member, wherein a pitch ""a"" of the support members which is the distance at which the support members are disposed in the direction of the linear nozzle array is larger than a pitch ""b"" of the nozzles which is the distance at which the nozzles are disposed in the direction of the linear nozzle array and the fingers are evenly distributed over the length of the nozzle array.