| http://www.w3.org/ns/prov#value | - A method of expelling ink droplets on demand from an ink jet printer head to effect printing, said head including a combination of a single pressure chamber, a nozzle, a flow path connecting said chamber to an ink source, a flow path connecting said chamber to said nozzle, and a transducer element associated with said single chamber, said transducer element when driven altering the internal volume
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