Patent ID: 7794058

Claim:
A method for manufacturing a liquid discharge head comprising on a front surface thereof, a plurality of discharge ports for discharging liquid and an energy generating unit for generating energy for discharging liquid, on a back surface thereof, a plurality of electrodes, and a support member including a liquid discharge substrate having a through-hole for feeding liquid from a back surface to a front surface, a support surface for supporting the liquid discharge substrate thereon, a pad disposed on the support surface and connected to the plurality of electrodes, and a rectangular liquid supply port for supplying liquid to the through-hole on the liquid discharge substrate, wherein the method comprises: coating a first sealing resin on a portion between the liquid supply port and the pad on the support surface so as to surround a tip end portion at the liquid supply port of the support member when a mounting portion of the liquid discharge substrate and the support member is hermetically sealed; mounting the liquid discharge substrate on the support member to join one of the plurality of electrodes to the pad; and filling a gap between the support member and the liquid discharge substrate with a second sealing resin from a circumference of the liquid discharge substrate on the support member.