| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a liquid injection head resolving at least one of a problem of connectivity of flow passages, a problem of variations of a flow rate and a problem of dimensions required for the flow passages while adjusting a pressure loss for each branch when having a plurality of branch flow passages communicating with main flow passages via branch points, and further to provide a liquid injection device.SOLUTION: A liquid injection head comprises: a plurality of head main bodies provided with liquid injection surfaces having nozzle openings where liquid is injected; and flow passage members provided with flow passages supplying the liquid to each of the head main bodies. The flow passages of the flow passage members include: main flows communicating with inflow ports supplied with the liquid from liquid supply sources; and a plurality of branches 271a1 through 271a6 diverging from the main flows. Flow passage frictional coefficients of the plurality of branches 271a1 through 271a6 vary in the courses of the flow passages, and distances from the liquid injection surfaces to positions where the flow passage frictional coefficients vary are different from one another for each of the branches 271a1 through 271a6.</p> |
