Patent ID: 9278532
Filing Date: 2016-03-08
CPC Classification: B41J

Claim Text:
1. A process for producing a liquid ejection head including an orifice plate having an ejection orifice for ejecting a liquid and a liquid flow path in communication with the ejection orifice, and a substrate having an ejection energy generating element for generating energy for ejecting the liquid, the process comprising: (1) forming a mold pattern of the liquid flow path and a base pattern surrounding the mold pattern on the substrate; (2) disposing a covering layer to cover the mold pattern and the base pattern; (3) forming at least the ejection orifice in the covering layer to form the orifice plate; and (4) removing the mold pattern and the base pattern, wherein the base pattern is formed in such a form that the orifice plate includes a side wall portion constituting a side wall of the liquid flow path and a plurality of support structures that are disposed on the substrate in a peripheral region of the side wall portion and support an upper surface portion constituting an upper wall of the orifice plate, and wherein the base pattern has a mesh form.