In an illustrated transducer construction, electric potential changes applied to the transducer effect piezoelectric movement for causing recording fluid to be ejected through a jet orifice and applied on a recording carrier. In order to increase the maximum drop frequency and in order to improve the...http://www.google.ca/patents/US4539575?utm_source=gb-gplus-sharePatent US4539575 - Recorder operating with liquid drops and comprising elongates piezoelectric transducers rigidly connected at both ends with a jet orifice plate
