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Browse Prior Art Database

Tapered Piezoelectric Actuator

IP.com Disclosure Number: IPCOM000044237D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Smith, NC: AUTHOR

Abstract

A piezoelectric similar ceramic bending actuator is tapered both in width and thickness from a point of cantilevered mounting to provide an optimum combination of fast repetition rate and long stroke. Such a device can be used to drive a wire of a wire matrix printer. Ceramic bending element 10 comprises a high tensile strength conductive center plate 11 and progressively thinner ceramic laminas 12, 13, etc. The surfaces of the laminas 12, 13, etc., carry a conductive material by which signals applied from signal generators 14 and 15 deliver charge to one surface of each lamina. The other surface of each lamina is connected by wire 16 to ground such that each lamina is subjected to a transverse voltage of an appropriate direction causing cooperative bending of the entire unit.

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Tapered Piezoelectric Actuator

A piezoelectric similar ceramic bending actuator is tapered both in width and thickness from a point of cantilevered mounting to provide an optimum combination of fast repetition rate and long stroke. Such a device can be used to drive a wire of a wire matrix printer. Ceramic bending element 10 comprises a high tensile strength conductive center plate 11 and progressively thinner ceramic laminas 12, 13, etc. The surfaces of the laminas 12, 13, etc., carry a conductive material by which signals applied from signal generators 14 and 15 deliver charge to one surface of each lamina. The other surface of each lamina is connected by wire 16 to ground such that each lamina is subjected to a transverse voltage of an appropriate direction causing cooperative bending of the entire unit. The laminas are tapered along their width from the point 17 of the cantilevered mounting.

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