Patent ID: 6904945

Claim:
A multi-duct fluid dispenser for withdrawing liquid ( 14 ) from a plurality of cavities ( 12 ) formed in a reservoir platter ( 10 ) and spraying it onto a receiving platter ( 16 ), comprising: a plurality of flexible ducts ( 26 ) arranged in a convergent bundle, the first ends of which are intended to be immersed in said cavities and the second ends of which are assembled in a miniaturized array, means of filling said ducts, from their first ends, with the liquid contained in the cavities, and means of expelling a drop of liquid from the second end of each duct toward the receiving platter, characterized in that: said ducts ( 26 ) are formed in a plurality of flexible plates ( 18 ) so as to converge from their first ends toward their second ends; said plates ( 18 ) are joined together by their part ( 24 ) that comprises the second ends of the ducts, each plate comprises two polymer sheets ( 34 , 36 ) sealed together and of which at least one is endowed with an array of convergent grooves forming said ducts; each duct ( 26 ) has a first narrowing ( 42 ) near its second end and a second narrowing ( 40 ) at said end; and said expelling means comprise a piezoelectric actuator ( 38 ) arranged on an exterior wall of the duct, between its two narrowings, and the purpose of which is to deform said wall at this point so as to reduce the thickness of the duct.