Patent ID: 6834423
Filing Date: 2004-12-28
Classification: B41J,Y10S,Y10T

Abstract:
A method of manufacturing a liquid discharge head, the liquid discharge head comprising a device substrate, a liquid flow path having a bubble generating region for generating a bubble in liquid therein, a discharge energy generating device provided on the device substrate and arranged in the liquid flow path to generate thermal energy for generating the bubble in the liquid, a discharge port to discharge the liquid in the liquid flow path, the discharge port communicating with the liquid flow path, and a movable member mounted on the device substrate to face the discharge energy generating device with an interval with respect to the discharge energy generating device, the movable member having a fixed end part in an upstream side of the movable member in the direction of liquid flow in the liquid flow path and a free end at a downstream end of the movable member, said method comprising the steps of:providing a sacrifice layer on the discharge energy generating device of the device substrate; laminating a material to be the movable member on the sacrifice layer; removing the sacrifice layer; and after removing the sacrifice layer, removing a right-angled part and an acute-angled part of an edge of the movable member facing the liquid flow path, by wet etching.