Patent 7108360 was granted and assigned to Industrial Technology Research Institute on September, 2006 by the United States Patent and Trademark Office.
A structure of the stacked inkjet head is composed of a stacked fluid structure and an actuator. At least one of the several plates in the stacked fluid structure has a junction with a tuning hole for enhancing the connection strength of the junction, accommodating overflown adhesive, and reducing structural deformation resulted from the temperature. The invention also avoids the troubles of inhomogeneous etching speeds when making nozzles or channels.