Patent ID: 8033652

Claim:
A liquid discharge head mountable to a recording apparatus, the head comprising: a discharge port array having a plurality of discharge ports configured to discharge liquid; a liquid chamber configured to supply liquid to the discharge port array, wherein a cross section vertical to a vertical direction of the liquid chamber has an elongated shape of which a length direction is along the discharge port array, in a state in which the head is mounted to the apparatus; and a liquid introduction passage configured to introduce liquid to the liquid chamber, the liquid introduction passage being wider than the liquid chamber in a width direction of the elongated shape, wherein a communicating portion in which the liquid chamber communicates with the liquid introduction passage is longer than a width of the liquid chamber along the width direction and shorter than the liquid chamber, with respect to the length direction, and is projecting from the liquid introduction passage for the liquid chamber, and wherein with respect to a vertical direction in the state, a bottom of the liquid introduction passage is disposed at a lower position than a top of the liquid chamber in the communicating portion, and a distance between the top and the bottom is longer than half of the width of the liquid chamber.