A stimulation arrangement for a fluid jet printer. A pair of piezoelectric crystals are mounted on opposing surfaces of a high acoustic Q solid member and are excited for periodic lengthening at the frequency of desired stimulation. This creates shear waves in the surface of the high Q member. The high...http://www.google.com/patents/US4646104?utm_source=gb-gplus-sharePatent US4646104 - Fluid jet print head
