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Piezoelectric Driver for Drop-On-Demand Ink Jet Disclosure Number: IPCOM000039618D
Original Publication Date: 1987-Jul-01
Included in the Prior Art Database: 2005-Feb-01

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Lee, FC Mills, RN Mossbrugger, H Pederson, KA [+details]


An array of piezoelectric transducers is described which is suitable for drop-on-demand ink jet printing. The array of transducers comprise a corrugated part formed of piezoelectric materials and a flat cover plate made of materials with reasonable mechanical and acoustic properties. The array shown in Fig. 1 comprises a corrugated part 1 formed of piezoelectric materials and a flat cover plate 2. These two parts are bonded together, and electrodes 3, 4 are formed on the appropriate surfaces of the piezoelectric material, either before or after the bonding process to produce drive and ground electrodes for each transducer in the array. The last step is to remove, by etching or machining, the piezoelectric material 5 between active channels to reduce the tethering effect between active and inactive piezoelectric materials.