A printhead for an inkjet printer, the printhead comprising: a printhead
integrated circuit having an array of ink ejection nozzles formed on a
substrate; a plurality of ink feed conduits for establishing fluid
communication with at least one ink storage compartment; and, a polymer
sealing film between the ink feed conduits and the printhead integrated
circuits, the polymer film having an array of apertures such that the
ejection nozzles are in fluid communication with the ink feed conduits;
wherein, the polymer sealing film is more than 25 microns thick.