Ink jet head unit, ink jet head cartridge and ink jet recording apparatus.

摘要

An ink jet recording head unit for performing a recording operation by discharging ink, the ink jet recording head unit including: an ink jet head portion having an ink passage communicated with a discharge port for discharging ink and a substrate having an energy generating element for causing energy for discharging ink to act on ink present in the ink passage and supplied through an ink supply port formed in a connecting portion; and an ink supply member having a connecting portion to be connected to the ink jet head portion so as to supply ink to the ink jet head portion via the connecting portion, wherein at least the connecting portion of the ink jet head portion and the connecting portion of the ink supply member has a projection portion at a position at which it comes in contact with the corresponding connection port so that the connecting portions are respectively connected to the corresponding connecting portions by deforming and bringing the projection portions to come in contact with the connecting portions. <IMAGE>