Patent ID: 7121649
Filing Date: 2006-10-17
Classification: B41J

Abstract:
1. An ink-jet head comprising: a passage unit that includes a common ink chamber extending in one direction and a plurality of individual ink passages each extending from the common ink chamber through a pressure chamber to a nozzle; and a reservoir unit fixed to the passage unit and including an ink reservoir that stores ink, the ink reservoir extending in the one direction and having a larger capacity than that of the common ink chamber, wherein the reservoir unit includes: an ink introduction port into which ink is introduced; an introduction passage that extends from the ink introduction port to the ink reservoir and that includes an inflow port facing the ink reservoir; a plurality of ink discharge ports through which ink is discharged into the common ink chamber; and a plurality of discharge passages that extend from the ink reservoir to the ink discharge ports and that include a plurality of outflow ports facing the ink reservoir, and wherein the inflow port is disposed such that at least one outflow port can exist on either side of the inflow port with respect to the one direction.