Patent ID: 7810914
Filing Date: 2010-10-12
Classification: B41J

Abstract:
1. A liquid jet head comprising: a plurality of head modules each having a nozzle plate with nozzle orifice formed therein, a passage-forming substrate having pressure-generating chamber therein, the chambers communicating with the associated nozzle orifices and pressurized by pressure generating element so as to eject droplets, and a head case placed at the side of the passage-forming substrate opposite to the nozzle plate, the head case having flow paths for providing a liquid to the pressure-generating chambers; a fixing plate having openings through which the nozzle orifice are exposed and carrying the head modules positioned and fixed thereon; a connecting member to which the surface of the head module adjacent to the head case is connected, the connecting member having flow paths which communicate with the pressure-generating chambers; and a reinforced portion made of an adhesive filling a clearance between adjacent head modules fixed to the fixing plate, wherein the fixing plate has a side wall portion protruding heightwise from the periphery of the bottom portion thereof, wherein the reinforced portion is also provided in a clearance between the side wall portion and the head modules, and wherein the height of the side wall portion is smaller than that of the head modules.