The objective of this work is the processing and characterization of a dense CuInSe2 solar-cell-absorber-layer based on nanoparticulate precursors. Bimetallic copper-indium-and elemental selenium-nanoparticles were synthesized by wetchemical processes and then dispersed in organic solvents as nano-inks. These inks were then printed into different layerstacks on a molybdenum coated float-glass-substrate via doctorblading. The temperature treatment to transform these layerstacks into dense CISe thin films was investigated, using a faceto-face technique and mechanically applied pressure or the repetition of coating and annealing. All absorber layers were characterized with SEM, EDX and XRD. Dense, coarse grained CuInSe2 layers with a thickness ≈ 7 µm were formed and the application of mechanical pressure shows potential to reduce thickness and sinter together the nanoparticles to large grains of ca. 3 µm in size. The face-to-face-annealing ensured keeping a stoichiometric ratio of (Cu+In) / Se ≈ 1, and can help reducing