LIQUID INJECTION HEAD, LIQUID INJECTION DEVICE, AND LIQUID DISCHARGING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a liquid injection head and a liquid injection device capable of sufficiently reducing the speed of liquid circulated in a pressure generation chamber and simultaneously holding a sufficient amount of liquid for discharging when a circulation method is employed.SOLUTION: An ink jet recording head for circulating ink between a first manifold 17 and a second manifold 29 via a pressure generation chamber 12 includes first and second bypass flow paths 35 and 36 for connecting the first manifold 17 and the second manifold 29 at two places, i.e., one end side and the other end side of a nozzle string formed by a nozzle opening 13 outside the nozzle string, and is characterized in that a relationship between the flow path resistance R of the first and second bypass flow paths 35 and 36 and the flow path resistance r of a flow path part including each pressure generation chamber 12 connecting the first and second manifolds 17 and 29 is set to R