Inkjet recording head and head unit

摘要

An inkjet recording head includes a plurality of plates bonded to each other and an information recording portion. The plates include a first plate defining in one surface thereof a plurality of nozzle holes through which ink is ejected to a recording medium. The one surface of the first plate is exposed to an outside. In the information recording portion, unique information of the inkjet recording head is recorded. The information recording portion is disposed so as to be readable from the outside on a one-surface side.