Patent ID: 7374628

Claim:
A method for manufacturing a cell-driving-type micro pump member with a punch and a die, in which a plurality of cells formed in a base part are used as pressurizing chambers, and side walls of said pressurizing chambers are constituted by piezoelectric/electrostrictive elements, and said pressurizing chambers are formed to be independent of adjacent pressurizing chambers, said method comprising the steps of: preparing a plurality of green sheets comprising a piezoelectric/electrostrictive material; machining a plurality of slit-shaped apertures corresponding to said plurality of pressurizing chambers and a plurality of slit-shaped apertures corresponding to a plurality of slits in all of said green sheets with said punch, said slit-shaped apertures corresponding to said plurality of slits being shorter in a longitudinal direction than said slit-shaped apertures corresponding to said plurality of pressurizing chambers; and positioning and laminating all of said green sheets to form piezoelectric/ electrostrictive elements that define said side walls of said pressurizing chambers, each of said side walls of said pressurizing chamber being separated from a side wall of an adjoining pressurizing chamber by one of said slits.