Abstract—This paper work will be investigated the printability of carbon nanotubes (CNT) conductive inks by flexographic onto various substrates. Two types CNT which are water and solvent base, and four types of substrates which are silica, biaxially oriented polypropylene (BOPP), 70gms/m2 white blank office paper and woven had been used. A pattern of multiple solid line of photopolymer printing plate was prepared, with different width but constant gaps width between 2 adjacent of lines. The Printability of printing was checked visually. Simple test of ink functional performance was checked by lighting up led lamp. The roughness of the printed pattern surface was determined by Atomic Force Microscopy (AFM). The result showed that both inks can be printed under different parameter setting. CNTs water base ink is the best ink which can be printed onto many substrates but maintain high electric conductivity.