Patent ID: 6362844
Filing Date: 2002-03-26
Classification: B41J

Abstract:
An ink-jet printer head of a piezoelectric ceramic type, comprising:an ink tank for storing an ink therein, the ink tank having a plurality of side walls, a bottom plane, an opening and an ink outlet, the plurality of side walls defining a top edge, the opening has a first dimension in a first direction; a deformable layer for covering the opening of the ink tank, said deformable layer having an edge attaching the top edge of the plurality of side walls; and an actuator causing the deformable layer to vibrate, the actuator being made of piezoelectric material, the actuator having a first end and a second end, a distance between the first end and the second end of the actuator being substantially shorter than the first dimension, the first end of the actuator being fixed mounted on a portion of said edge of said deformable layer, and the second end of the actuator being free to vibrate; wherein a portion of said deformable layer between the second end of the actuator and the top edge is free of contact with both the actuator and the top edge; wherein the vibration action of the deformable layer causes a perturbation action to the ink inside the tank such that the ink is jetted, through the outlet, towards the outside of the printer head.