Patent ID: 7806518

Claim:
An inkjet recording head comprising: a plurality of recording element substrates having a plurality of discharge ports, a plurality of recording elements, and a plurality of liquid supply ports, the discharge ports and the recording elements being disposed in a plurality of rows, the discharge ports being configured to discharge liquid, the recording elements being configured to generate discharge energy for discharging the liquid from the discharge ports, the liquid supply ports facilitating supplying the liquid to the recording elements; and a supporting plate having the recording element substrates disposed in a plurality of rows on one surface of the supporting plate in a direction of arrangement of the discharge ports and the recording elements, the supporting plate having a plurality of liquid supply flow paths facilitating supplying the liquid to the liquid supply ports at the respective recording elements, wherein each liquid supply flow path is defined by a vertical wall and an inclined wall, each vertical wall being perpendicular to a surface of the corresponding recording element substrate that contacts the supporting plate, each inclined wall opposing the surface of the corresponding recording element substrate and forming an acute angle with the surface of the corresponding recording element substrate, wherein, in the liquid supply flow paths that supply the liquid to the liquid supply ports at the respective recording element substrates that are arranged in one of the rows, the inclined walls extend in a first direction along the direction of arrangement of the recording element substrates with respect to the vertical walls, and wherein, in the liquid supply flow paths that supply the liquid to the liquid supply ports at the respective recording element substrates that are arranged in another of the rows that is adjacent to the one of the rows, the inclined walls extend in a second direction opposite to the first direction, with respect to the vertical walls.