| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection head capable of restraining a partitioning wall from being deformed when molded, while securing rigidity of a head case, and a manufacturing method for the liquid injection head.SOLUTION: This liquid injection head has the resin head case 16 formed with a plurality of storage cavity parts for storing an oscillator unit, the head case includes a metal plate 38 in an inside of the partitioning wall 37 for partitioning the adjacent storage cavity parts, one part of each face is recessed toward an opposite side opposite each other, in each of the first face 38a in one storage cavity part side and the second face 38b in the other storage cavity part side, in the metal plate, and a groove-like flow cavity part 40 is formed along a resin flow direction U flowing with the resin when molding the head case. |
