Patent ID: 9440439
Filing Date: 2016-09-13
CPC Classification: B41J

Claim Text:
1. An ink-jet head for discharging a water-based ink for ink-jet recording, comprising: a flow passage unit which has a plurality of nozzles, a plurality of pressure chambers which correspond to the plurality of nozzles, a first flow passage for the water-based ink to be supplied to the plurality of pressure chambers, and a second flow passage for the water-based ink to be supplied from the plurality of pressure chambers to the plurality of nozzles, and an actuator which is joined to the flow passage unit to cover the plurality of pressure chambers of the flow passage unit and which pressurizes the water-based ink contained in the plurality of pressure chambers, wherein the first flow passage is formed with portions, of the flow passage unit, which are to be brought in contact with the water-based ink and which are formed by two or more types of metal members, wherein: