We have reported that the calculated reflectance of a xerographic print considering absorption and multi-reflection did not correspond well with the measured one probably due to the light scattering in the colorant layers. I have calculated the effect of scattering on the reflectance of images consisting of a colorant layer on a transparent or diffusive support. In the calculations, the scattering, absorption and multi-reflection in the colorant layer were considered. In a transparency, the multi-reflection terms can virtually be neglected since the low reflectance values at the front and rear surfaces are multiplied. However, in a print including a highly reflective substrate, it has been revealed that the scattered component noticeably augments the reflectance due to the contribution of the multi-reflection component derived from the scattered light itself and the illuminating light. By applying the calculation to xerographic images, the predictive accuracy for spectral reflectance markedly improved.