Patent ID: 8778200
Filing Date: 2014-07-15
Classification: B41J,B81C

Abstract:
1. A method for manufacturing a liquid discharge head including a liquid flow path forming member, a substrate on which first and second supply ports for supplying a liquid are provided, and an energy generating element that generates energy used for discharging the liquid, comprising: providing the substrate having the energy generating element on a second surface of the substrate; forming the first supply port, after the liquid flow path forming member is formed, by performing a crystal anisotropic etching on a first surface of the substrate that is a rear surface of the second surface of the substrate and by removing 75% to 90% of a thickness of the entire substrate, a <100> surface being exposed on a bottom surface of the first supply port; and forming a plurality of the second supply ports by performing a dry etching on the <100> surface of the substrate, the energy generating element being formed on the second surface of the substrate between two second supply ports among the plurality of the second supply ports.