Patent ID: 8132900

Claim:
An inkjet recording head cartridge, comprising: a recording element substrate having a plurality of ink discharge ports for discharging ink, a plurality of energy generating elements generating energy for discharging ink and provided corresponding to the plurality of ink discharge ports, and a plurality of ink supply ports supplying ink to the plurality of energy generating elements; and a container body, the container body including: a first ink accommodating portion and a plurality of second ink accommodating portions, communicating with the plurality of ink supply ports; a projecting portion displaced toward a side surface of the container body in a state where the inkjet recording head cartridge is used and being a part of a bottom surface of the container body in the state which projects, the recording element substrate being mounted on an end surface of the projecting portion in a direction in which the projection portion projects in such a way that a direction in which the plurality of ink supply ports are arranged is along the side surface; a first partitioning wall partitioning an inner space of the container body to form the first ink accommodating portion having the side surface, the first partitioning wall intersecting with the plurality of ink supply ports when viewed from a perpendicular direction which is perpendicular to the end surface; and a second partitioning wall partitioning an inner space formed by the first partitioning wall and different from the first ink accommodating portion to form the plurality of second ink accommodating portions, the second partitioning wall provided in a direction intersecting with the first partitioning wall when viewed from the perpendicular direction.