Metal working – Piezoelectric device making
Patent
1986-08-29
1988-09-06
Echols, P. W.
Metal working
Piezoelectric device making
346140PD, 156344, H04R 1700
Patent
active
047682663
ABSTRACT:
A transducer array for an ink jet printing apparatus includes a plurality of discrete transducer elements, each of which are comprised of a poled ferroelectric material arranged and bonded along one face thereof to a rigid substrate by a thermoplastic cement. The opposite face of each of said transducer elements is bonded at one end to a coupling means communicating within an ink jet chamber having an ink droplet ejection orifice, and at the other end to rigid support means, a means for bonding both ends comprised of a structural-type conductive epoxy having a predetermined cure temperature. A method for fabricating such an array includes the steps of heating the bonded transducer elements at the cure temperature, but below a second predetermined temperature representative of the temperature at which the thermoplastic cement readily flows. Once the epoxy means has cured, the transducer array which is incorporated within the ink jet printing apparatus is heated to the second predetermined temperature, thereby permitting the removal of the rigid substrate and subsequent assembly operations.
REFERENCES:
patent: 3192420 (1965-06-01), Cowan
patent: 3596335 (1971-08-01), Bennett
patent: 3904274 (1975-09-01), Feinleib et al.
patent: 4439780 (1984-03-01), DeYoung et al.
patent: 4572981 (1986-02-01), Zola
Dataproducts Corporation
Echols P. W.
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