Patent ID: 7931352

Claim:
A liquid discharge head comprising: a discharge element substrate having a discharge port for discharging a liquid, an energy generating element for generating discharging energy to discharge liquid from the discharge port and provided at a first surface of the substrate, and a supply port for supplying liquid to the discharge port penetrating between the first surface and a second surface of the substrate, the second surface being a back surface of the first surface; and a support member for supporting the discharge element substrate and having a supply path for communicating with the supply port, wherein the second surface of the discharge element substrate and the support member are bonded by an adhesive, and the adhesive contains: (A) a glycidyl amine type epoxy resin containing multifunctional epoxy resin of epoxy equivalent of not more than 150, (B) a dicyandiamide and an imidazole compound, and (C) a mercapto silane coupling agent.