| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing head which prevents the image quality of a print image from being deteriorated and improves the reliability of the image quality sufficiently in practical use applications, as well as a method for manufacturing the printing head. SOLUTION: The printing head 40 is equipped with a displacement means which displaces the appropriate region of a vibrating plate welded to block a pressure chamber 41C and a common flow path 41D, into the pressure chamber 41C. The vibrating plate is located on one of the face sides of the flow path plate, on one of the faces of which the pressure chamber 41C and the common flow path 41D for supplying ink to the pressure chamber 41C are formed. In addition, protruding support parts 41E which are almost as high as one of the faces of the flow path plate are provided in the common flow path 41D of the flow path plate. Further the vibrating plate is welded on one of the face sides of the flow path plate, on one of the faces of which the pressure chamber 41C and the common flow path 41D for supplying ink to the pressure chamber 41C are formed in such a way that the pressure chamber 41C and the common flow path 41D are blocked. In the method for manufacturing the printing head 40 as described, the first step to manufacture the flow path plate by forming the pressure chamber 41C, the common flow path 41D and the protruding support parts 41E of almost the same height as one of the faces of a platelike member in the common flow path 41D, on one of the faces of the platelike member and a second step to weld the vibrating plate on one of the faces of the flow path plate, are provided.
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