An ink jet head comprising: a head chip including: a plurality of nozzles (N) that are configured to eject ink; a plurality of pressure chambers that communicate with the respective nozzles (N), and are configured to store ink; a plurality of pressure generating means that correspond to the respective pressure chambers , and are configured to apply pressure to the ink in the corresponding pressure chambers ; a plurality of discrete circulation flow paths that branch from ink flow paths extending from inlets of the pressure chambers to outlets (Nb) of the nozzles (N), and are capable of discharging the ink in the pressure chambers ; and a common circulation flow path with which at least two of the discrete circulation flow paths communicate; and a common supply liquid chamber that is provided on an upper surface of the head chip , and is configured to store ink to be commonly supplied to the respective pressure chambers through a plurality of ink supply holes formed in the upper surface of the head chip , wherein the ink flow paths include communicating paths through which the nozzles (N) communicate with the pressure chambers , wherein the discrete circulation flow paths branch from the communicating paths , and wherein the ink jet head further comprises a first damper that is provided to face at least one of the discrete circulation flow paths and the common circulation flow path , and is capable of changing volumes of flow paths when being elastically deformed by pressure. a head chip including: a plurality of nozzles (N) that are configured to eject ink; a plurality of pressure chambers that communicate with the respective nozzles (N), and are configured to store ink; a plurality of pressure generating means that correspond to the respective pressure chambers , and are configured to apply pressure to the ink in the corresponding pressure chambers ; a plurality of discrete circulation flow paths that branch from ink flow paths extending from inlets of the pressure chambers to outlets (Nb) of the nozzles (N), and are capable of discharging the ink in the pressure chambers ; and a common circulation flow path with which at least two of the discrete circulation flow paths communicate; and a plurality of nozzles (N) that are configured to eject ink; a plurality of pressure chambers that communicate with the respective nozzles (N), and are configured to store ink; a plurality of pressure generating means that correspond to the respective pressure chambers , and are configured to apply pressure to the ink in the corresponding pressure chambers ; a plurality of discrete circulation flow paths that branch from ink flow paths extending from inlets of the pressure chambers to outlets (Nb) of the nozzles (N), and are capable of discharging the ink in the pressure chambers ; and a common circulation flow path with which at least two of the discrete circulation flow paths communicate; and a common supply liquid chamber that is provided on an upper surface of the head chip , and is configured to store ink to be commonly supplied to the respective pressure chambers through a plurality of ink supply holes formed in the upper surface of the head chip , wherein the ink flow paths include communicating paths through which the nozzles (N) communicate with the pressure chambers , wherein the discrete circulation flow paths branch from the communicating paths , and wherein the ink jet head further comprises a first damper that is provided to face at least one of the discrete circulation flow paths and the common circulation flow path , and is capable of changing volumes of flow paths when being elastically deformed by pressure. <EOS>