Patent ID: 7472986

Claim:
A liquid droplet discharge head, comprising: a plurality of liquid chambers formed with nozzles which discharge droplets of liquid, the plurality of liquid chambers being arranged two-dimensionally; a plurality of liquid pressure application devices each of which causes the droplet of the liquid of a prescribed volume to be discharged from a corresponding one of the nozzles; at least two main flow channels including flow channel ports which function as connection ports forming at least one of a liquid supply port and a liquid output port; and a plurality of branch flow channels which are connected to the main flow channels and to the liquid chambers and which supply the liquid to the liquid chambers, wherein each of the at least two main flow channels has the flow channel ports formed at both end sections thereof, and the plurality of branch flow channels span respectively between the at least two main flow channels, wherein each of said flow channel ports formed at both end sections of the at least two main flow channels function as liquid supply ports.