Liquid ejection apparatus and inkjet printer, and method of manufacturing them

摘要

The liquid ejection apparatus includes nozzles formed in a member provided on one side of a substrate, droplet ejection units each of which corresponds to one of the nozzles, and which are formed on a surface of the one side of the substrate, individual flow paths each of which feeds liquid to one of the nozzles, and which are formed on the one side of the substrate, one or more front surface feed paths for feeding liquid correspondingly to the individual flow paths and one or more back surface feed paths communicating with the one or more front surface feed paths. The one or more front surface feed paths are formed by etching process from the surface of the one side of the substrate and the one or more back surface feed paths are formed by sandblast process from a surface of another side of the substrate. The inkjet printer includes the liquid ejection apparatus as the inkjet print head.