Production method of passage baseplate, production method of liquid drop emission head and production methodological null nozzle hole of liquid

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for a channel substrate in which nozzles can be highly precisely machined and formed to a silicon substrate to be the channel substrate while a reservoir capacity sufficient for prevention of cross talk is secured, and to provide a manufacturing method for a liquid droplet ejection head, and a manufacturing method for a liquid droplet ejector.;SOLUTION: In the manufacturing method for the channel substrate 1, a liquid channel comprised of a nozzle hole 11, a cavity 12 and a reservoir 13 with a predetermined capacity is formed to a channel substrate base material consisting of a single silicon substrate. When part for forming the nozzle hole 11, cavity 12 and reservoir 13 is etched from one surface of the channel substrate base material to a predetermined depth, a through-hole part for alignment penetrating the channel substrate base material is formed simultaneously. After the nozzle hole is etched to the predetermined depth, the channel substrate base material is aligned, and the nozzle hole is made to pierce from the other surface of the channel substrate base material.;COPYRIGHT: (C)2009,JPO&INPIT