Abstract: An inkjet printing head including an ink supply layer formed with a plurality of connecting bores aligned so as to connect between ink cavities in a cavity layer on its rear side and corresponding ejection nozzles in a nozzle layer on its front side. The ink supply layer is formed from a porous material having a multitude of small interconnected pores so as to allow passage of ink therethrough. The ink supply layer features a number of ink inlet bores passing from its rear surface to its front surface and in direct fluid communication with a pattern of ink distribution channels formed in the front surface. The ink distribution channels and ink inlet bores together define part of an ink flow path along which ink supplied from an external ink supply passes from the rear surface through the ink inlet bores to the pattern of ink distribution channels on the front surface, and through the porous material to the ink cavities.