Browse Prior Art Database

MULTILAYER TRANSDUCERS

IP.com Disclosure Number: IPCOM000025139D
Original Publication Date: 1983-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 51K

Publishing Venue

Xerox Disclosure Journal

Abstract

The ceramics industry has perfected the ability to make multilayer capacitors in various configurations. The term "multilayer" refers to the configuration in which the electrodes are interdigitated or interleaved as shown in Figures 1 and 2.

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XEROX DISCLOSURE JOURNAL

MULTILAYER TRANSDUCERS Proposed Classification Anonymous US. C1. 346/140

Int. Cl. Gold 15/16

FIG. I

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FIG. 2

The ceramics industry has perfected the ability to make multilayer capacitors in various configurations. The term "multilayer" refers to the configuration in which the electrodes are interdigitated or interleaved as shown in Figures 1 and 2.

This type of structure can be advantageously utilized as an ink jet transducer. Figure 2 shows a cross-section of a multilayer tubular transducer. The advantages of the multilayer structure are as follows. First, the inner surface or the surface in contact with the liquid ink can be fired ceramic, eliminating the need for a channel lining. Second, the electrode connections can be placed conveniently at the ends. Third, and most importantly, the piezoelectric material is responsive to field. Since the electrodes are closer together, the same voltage gives a much higher field. The same principle applied to the planar transducer of Figure 1 properly poled provides a bimorph, eliminating the need to bond the planar structure to a shim.

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Volume 8 Number 5 September/October 1983

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    XEROX DISCLOSURE JOURNAL VoIume 8 Number 5 Septernher/October 1983

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