Patent ID: 6550139
Filing Date: 2003-04-22
Classification: B23Q,Y10T

Abstract:
A method for fabricating datum surfaces on an ink jet print cartridge body having an ink jet printhead nozzle array defined in a planar substrate mounted thereon, comprising:fixing the print cartridge in a tooling fixture; performing one or more position measurements on the fixed print cartridge to obtain position measurement data of a position of the substrate relative to the tooling fixture; using the position measurement data to determine one or more precision datum surface locations on the cartridge body in relation to the tooling fixture, conducting machining operations at one or more datum locations on the body to fabricate one or more precision datum surfaces on the body, each of said one or more datum surfaces spaced from the nozzle array surface by a respective distance along a first direction, said one or more precision datum surfaces for determining a nozzle-array-to-print-media spacing in said direction during printing operations.