Ink jet recording head and method of producing a plate member for an ink jet recording head

摘要

A plate member (6) constituting a channel unit (1) of an ink jet recording head has a metal plate (15) which is produced by rolling an etchable material, and a polymer film (16) which is laminated onto one face of the metal plate (15). The long side is perpendicular to the rolling direction of the metal plate (15). Warpage which easily occurs in the longitudinal direction is suppressed by the rigidity which is large in a direction perpendicular to the rolling direction.