Patent ID: 6895669

Claim:
A manufacturing method of an inkjet head, which jets, by shear deformation of a partition wall, an ink in an ink flow path constructed with the partition wall of a channel board and a cover board, comprising: forming a metal electrode on a surface of the partition wall; coating an adhesive agent on the cover board; superposing the cover board onto an upper end surface of the partition wall under a state satisfying condition 1, so that the ink flow path is formed with the partition wall and the cover plate, wherein the condition 1 is that a hardness of the adhesive agent measured by a viscoelasticity measuring apparatus is not less than 10 5 dyne/cm 2 ; and pressing the channel board and the cover board under a state satisfying the condition 1, and experiencing a condition 2, so that an upper end surface of the partition wall and the cover plate are bonded, wherein the condition 2 is that the hardness of the adhesive agent measured by the viscoelasticity measuring apparatus is not less than 10 5 dyne/cm 2 and not greater than 10 9 dyne/cm 2 .