Patent ID: 8733895
Filing Date: 2014-05-27
Classification: B41J

Abstract:
1. An ink-jet head configured to jet ink, comprising: a first nozzle group constituted by a plurality of nozzles which are arranged with intervals therebetween with respect to a first direction; a second nozzle group constituted by a plurality of nozzles which are different from the nozzles constituting the first nozzle group and arranged with intervals therebetween with respect to the first direction; a first common ink chamber which communicates commonly with the nozzles constituting the first nozzle group; and a second common ink chamber which communicates commonly with the nozzles constituting the second nozzle group; wherein, with respect to the first direction, the nozzles constituting the first nozzle group and the nozzles constituting the second nozzle group are arranged alternately to complement each other; wherein the first nozzle group includes: wherein the second nozzle group includes: wherein, with respect to the second direction, the fourth nozzle deviates from the third nozzle in a direction opposite to a direction in which the second nozzle deviates from the first nozzle; wherein the nozzles constituting the first nozzle group and the nozzles constituting the second nozzle group are aligned along the first direction, respectively; wherein the first nozzle group is divided into: wherein the second nozzle group is divided into: wherein the first divisional nozzle group and the third divisional nozzle group, and the second divisional nozzle group and the fourth divisional nozzle group, are arranged in the second direction, respectively; wherein, with respect to the second direction, a direction in which the second divisional nozzle group deviates from the first divisional nozzle group in the first nozzle group is opposite to a direction in which the fourth divisional nozzle group deviates from the third divisional nozzle group in the second nozzle group; and wherein the first nozzle belongs to the first divisional nozzle group, the second nozzle belongs to the second divisional nozzle group, the third nozzle belongs to the third divisional nozzle group, and the fourth nozzle belongs to the fourth divisional nozzle group.