Recently, microporous inkjet materials have attracted considerable interest because of image quality and instant drying features as required by modern fast inkjet printers. The technology and characterization methods behind the design of the new generation of ILFORD's nanoporous photopaper will be addressed. Proprietary patented technology of nanosized rare earth modified metal oxide particles were developed and coated into layers by photographic multilayer coating technology. Transparent layers, due to tailored oxide particles having a size distribution in the 20-nanometer range, lead to outstanding color quality and color rendition. Nanopores initiate immediate ink absorption. Excellent dye fixation is achieved thanks to controlled chemical modification of the nanopore surface charge distribution.Evidences of the structural changes caused by the insertion of Lanthanum into Aluminium oxide/hydroxide could be proven with the most modern analytical techniques. We can conclude that La-doped Aluminium oxide/hydroxide is significantly different from the undoped Aluminium oxide/hydroxide precursor material.