Patent ID: 6783213
Filing Date: 2004-08-31
Classification: B23K,B41J,Y10T

Abstract:
A piezoelectric ceramic pattern having a plurality of cut out piezoelectric ceramic crystals, each piezoelectric ceramic crystal located with an expandable piezoelectric ceramic pattern, wherein the cut out piezoelectric ceramic crystal is in a shape without angled corners, wherein the piezoelectric ceramic pattern is made by a process comprising:cutting a flat piezoelectric ceramic plate with a laser programmed to trace the shape without angled corners in a revolution having a starting point and a stopping point extending beyond the starting point, wherein the process of cutting requires a plurality of revolutions; randomizing the starting point of each revolution of the plurality of revolutions to form the cut-out shape without the angled corners, and repeating the cutting and randomizing steps for each shape without angled corners within the piezoelectric ceramic pattern.