Patent ID: 8993357
Filing Date: 2015-03-31
Classification: B41J

Abstract:
1. A method for manufacturing a liquid discharge head having a silicon substrate in which a beam is formed in a liquid supply port, the method comprising: forming a first liquid supply port in a silicon substrate; forming a plurality of blind holes extending from a first surface of the silicon substrate toward a side of a second surface which is a surface opposite to the first surface in the silicon substrate from a bottom surface of the first liquid supply port; and subjecting the silicon substrate in which the plurality of blind holes are formed to anisotropic etching from the first surface to form a second liquid supply port in the silicon substrate, the first liquid supply port and the second liquid supply port constituting at least one part of the liquid supply port, and in the formation of the second liquid supply port in the silicon substrate, the silicon in a region sandwiched by the plurality of blind holes when the silicon substrate is seen from the second surface side being left without being removed by the anisotropic etching in order to use the silicon left in the region sandwiched by the plurality of blind holes as a beam.