The relation between three-dimensional forms and Gonio-spectrum reflectance distributions of electrophotographic prints are studied. A light propagation simulation tool using Monte Carlo code is developed for analyzing light behavior in electrophotography prints. The simulated results of Gonio-spectrum reflectance distributions qualitatively correspond with measured datum. Based on comparisons between simulated and measured values, effects of base sheet's specular reflections on gloss values within electrophotography prints are estimated.Moreover, the prototypes of interactive “HANDHELD PRINT” viewing systems are developed. They can show what look electrophotographic print has, whether from where viewers look or how viewers handle the print. By using the system, electrophotographic prints can be examined and evaluated in various conditions.