Patent ID: 8999182
Filing Date: 2015-04-07
Classification: B41J

Abstract:
1. A method for manufacturing a liquid discharge head including a substrate having a liquid supply port; an energy generating element; and an orifice plate having a liquid discharge port, the method comprising: a step of preparing a first substrate having the energy generating element at a front surface side thereof; a step of forming a wall member, which is to become a wall for a liquid flow passage, at the front surface side of the first substrate; a step of forming a mask having an opening on the wall member and forming a second substrate, which is composed of silicon and is to become the orifice plate, on the mask; and a step of forming the liquid supply port in the first substrate and the liquid discharge port in the second substrate by supplying an etchant from a back surface side of the first substrate, the back surface being a surface opposite the front surface.