With the large and rapid development of digital printing, arose the problem of aging properties of the corresponding printed materials, such as : light fastness, moisture and heat resistance.In the present work, a special emphasis is put on the role played by the nature of the paper itself in these fastness characteristics.Four selected ink-jet papers were analyzed : chemical composition of the surface, permanence properties. Then, ink-jet prints on these papers were analyzed after accelerated aging. The experimental parameters were time of exposure to UV-light, humidity and temperature.The fastness properties were evaluated in terms of color differences, but also by microscopy observations and spectroscopic analyses.The results obtained showed, among other things, the significant influence of the paper properties on the global aging performances of the prints.