Experiments were carried out using Mimaki UV ink-jet printer and UV ink. Ink output quantity and substrate were taken as variable, ICC files were made, and the color gamut was compared. The effect of ink output quantity on color reproduction of different contrast range was discussed. The effect of color cast of substrate on the range of gamut was analyzed. The results showed that for Mimaki UV inkjet printer, color reproduction can be achieved through printing white UV ink on the papers; the output quantity of ink can be selected according to the condition of distribution of main tone of images.