Method for the adjustment of piezoelectric driving elements

摘要

The invention relates to a method for the adjustment of piezoelectric driving elements in an ink mosaic writing head by individually settable variation of the degree of polarisation of the piezoelectric transducers provided as driving elements (3) in the writing head (1); for this purpose, there is connected individually for each driving element (3) an electrical field which can be adjusted in polarity and strength for a likewise adjustable period of time, or said field is in turn individually reduced for each driving element (3), the active electrode surface of which is impaired by burning off or by heating above the Curie point. <IMAGE>