Patent ID: 7320512

Claim:
A liquid-jet recording head comprising: a common liquid chamber supplied with liquid; a plurality of pressure chambers generating pressure applied to the liquid; a plurality of flow paths distributing the liquid from the common liquid chamber to the plurality of pressure chambers; and at least one group of first nozzles and second nozzles communicating with the plurality of pressure chambers in order to discharge the liquid, the group of nozzles being disposed along a plurality of sides of the common liquid chamber and discharging amounts of the first nozzles and the second nozzles being different, wherein the first nozzles have a discharging amount smaller than that of the second nozzles and a discharging frequency higher than that of the second nozzles, flow paths communicating with the first nozzles are shorter than flow paths communicating with the second nozzles, and wherein said at least one group of nozzles comprises at least one pair of nozzles facing each other across the common liquid chamber, and in each pair of nozzles facing each other across the common liquid chamber the two nozzles making up the pair are nozzles of the same kind.