Patent ID: 7249413

Claim:
A method of manufacturing an inkjet printing head, the method comprising: forming a first laminated structure that includes at least a part of an individual ink flow path having a pressure chamber and leads ink from an outlet of a common ink chamber to a nozzle through the pressure chamber, by laminating at least two metal plates having a hole formed thereon and fixing the metal plates to one another by metal-metal junction, and by laminating a plurality of thin plate members having a hole formed thereon, the thin plate members including the metal plates, and fixing the thin plate members to one another; forming a second laminated structure that includes at least a part of the common ink chamber, by laminating a plurality of thin plate members having a hole formed thereon and fixing the thin plate members to one another; and fixing the first laminated structure and the second laminated structure to each other while laminating the first laminated structure and the second laminated structure on each other; wherein the metal plates include a metal plate that provides a restricted flow path that restricts flow of the ink and is provided between the common ink chamber and the pressure chamber in the individual ink flow path, and the metal plate that provides the restricted flow path has a groove formed thereon, the groove serving as the restricted flow path.