Patent ID: 6523942
Filing Date: 2003-02-25
Classification: B41J

Abstract:
An inkjet head comprising:a pressure chamber plate containing a plurality of substantially separated pressure chambers, a common ink chamber spaced from the pressure chambers and a plurality of ink supply channels arranged in groups that each supply a pressure chamber with ink from the common ink chamber, each group of ink supply channels including a plurality of substantially parallel passages that each extend between and communicate at opposite ends between the common ink chamber and an associated pressure chamber, a piezoelectric element operative to selectively pressurize a pressure chamber in said pressure-chamber plate; and a nozzle plate that includes a nozzle which jets ink from the pressure chamber when said piezoelectric element pressurizes said pressure chamber, wherein said ink supply channels are connected in plural number to each pressure chamber, and arranged in a direction perpendicular to a direction in which said plurality of pressure chambers are arranged.